4 This is a high-level summary of the most important changes.
5 For a full list of changes, see the [git commit log][log] and
6 pick the appropriate release branch.
8 [log]: https://github.com/openssl/openssl/commits/
13 - [OpenSSL 3.2](#openssl-32)
14 - [OpenSSL 3.0](#openssl-30)
15 - [OpenSSL 1.1.1](#openssl-111)
16 - [OpenSSL 1.1.0](#openssl-110)
17 - [OpenSSL 1.0.2](#openssl-102)
18 - [OpenSSL 1.0.1](#openssl-101)
19 - [OpenSSL 1.0.0](#openssl-100)
20 - [OpenSSL 0.9.x](#openssl-09x)
25 ### Changes between 3.0 and 3.2 [xx XXX xxxx]
27 * Removed all references to invalid OSSL_PKEY_PARAM_RSA names for CRT parameters
29 Applications should not use the names OSSL_PKEY_PARAM_RSA_FACTOR,
30 OSSL_PKEY_PARAM_RSA_EXPONENT and OSSL_PKEY_PARAM_RSA_COEFFICIENT.
31 Use the numbered names such as OSSL_PKEY_PARAM_RSA_FACTOR1 instead.
32 Using these invalid names may cause algorithms to use slower methods
33 that ignore the CRT parameters.
37 * Add support for certificate compression (RFC8879), including
38 library support for Brotli and Zstandard compression.
42 * Add the ability to add custom attributes to PKCS12 files. Add a new API
43 PKCS12_create_ex2, identical to the existing PKCS12_create_ex but allows
44 for a user specified callback and optional argument.
45 Added a new PKCS12_SAFEBAG_set0_attr, which allows for a new attr to be
46 added to the existing STACK_OF attrs.
50 * Major refactor of the libssl record layer
54 * Added a new BIO_s_dgram_mem() to read/write datagrams to memory
58 * Add a mac salt length option for the pkcs12 command.
62 * Add more SRTP protection profiles from RFC8723 and RFC8269.
66 * Extended Kernel TLS (KTLS) to support TLS 1.3 receive offload.
68 *Daiki Ueno, John Baldwin and Dmitry Podgorny*
70 * Add support for TCP Fast Open (RFC7413) to macOS, Linux, and FreeBSD where
71 supported and enabled.
75 * Add ciphersuites based on DHE_PSK (RFC 4279) and ECDHE_PSK (RFC 5489)
76 to the list of ciphersuites providing Perfect Forward Secrecy as
77 required by SECLEVEL >= 3.
79 *Dmitry Belyavskiy, Nicola Tuveri*
81 * Add new SSL APIs to aid in efficiently implementing TLS/SSL fingerprinting.
82 The SSL_CTRL_GET_IANA_GROUPS control code, exposed as the
83 SSL_get0_iana_groups() function-like macro, retrieves the list of
84 supported groups sent by the peer.
85 The function SSL_client_hello_get_extension_order() populates
86 a caller-supplied array with the list of extension types present in the
87 ClientHello, in order of appearance.
91 * Fixed PEM_write_bio_PKCS8PrivateKey() and PEM_write_bio_PKCS8PrivateKey_nid()
92 to make it possible to use empty passphrase strings.
96 * RNDR and RNDRRS support in provider functions to provide
97 random number generation for Arm CPUs (aarch64).
101 * s_client and s_server apps now explicitly say when the TLS version
102 does not include the renegotiation mechanism. This avoids confusion
103 between that scenario versus when the TLS version includes secure
104 renegotiation but the peer lacks support for it.
108 * AES-GCM enabled with AVX512 vAES and vPCLMULQDQ.
110 *Tomasz Kantecki, Andrey Matyukov*
112 * The default SSL/TLS security level has been changed from 1 to 2. RSA,
113 DSA and DH keys of 1024 bits and above and less than 2048 bits and ECC keys
114 of 160 bits and above and less than 224 bits were previously accepted by
115 default but are now no longer allowed. By default TLS compression was
116 already disabled in previous OpenSSL versions. At security level 2 it cannot
121 * The SSL_CTX_set_cipher_list family functions now accept ciphers using their
126 * The PVK key derivation function has been moved from b2i_PVK_bio_ex() into
127 the legacy crypto provider as an EVP_KDF. Applications requiring this KDF
128 will need to load the legacy crypto provider.
132 * The various OBJ_* functions have been made thread safe.
136 * CCM8 cipher suites in TLS have been downgraded to security level zero
137 because they use a short authentication tag which lowers their strength.
141 * Subject or issuer names in X.509 objects are now displayed as UTF-8 strings
146 * Parallel dual-prime 1536/2048-bit modular exponentiation for
147 AVX512_IFMA capable processors.
149 *Sergey Kirillov, Andrey Matyukov (Intel Corp)*
151 * The functions `OPENSSL_LH_stats`, `OPENSSL_LH_node_stats`,
152 `OPENSSL_LH_node_usage_stats`, `OPENSSL_LH_stats_bio`,
153 `OPENSSL_LH_node_stats_bio` and `OPENSSL_LH_node_usage_stats_bio` are now
154 marked deprecated from OpenSSL 3.2 onwards and can be disabled by defining
155 `OPENSSL_NO_DEPRECATED_3_2`.
157 The macro `DEFINE_LHASH_OF` is now deprecated in favour of the macro
158 `DEFINE_LHASH_OF_EX`, which omits the corresponding type-specific function
159 definitions for these functions regardless of whether
160 `OPENSSL_NO_DEPRECATED_3_2` is defined.
162 Users of `DEFINE_LHASH_OF` may start receiving deprecation warnings for these
163 functions regardless of whether they are using them. It is recommended that
164 users transition to the new macro, `DEFINE_LHASH_OF_EX`.
168 * When generating safe-prime DH parameters set the recommended private key
169 length equivalent to minimum key lengths as in RFC 7919.
173 * Fix and extend certificate handling and the apps `x509`, `verify` etc.
174 such as adding a trace facility for debugging certificate chain building.
178 * Various fixes and extensions to the CMP+CRMF implementation and the `cmp` app
179 in particular supporting requests for central key generation, generalized
180 polling, and various types of genm/genp exchanges defined in CMP Updates.
184 * Fixes and extensions to the HTTP client and to the HTTP server in `apps/`
185 like correcting the TLS and proxy support and adding tracing for debugging.
189 * Extended the CMS API for handling `CMS_SignedData` and `CMS_EnvelopedData`.
193 * Fixed and extended `util/check-format.pl` for checking adherence to the
194 coding style <https://www.openssl.org/policies/technical/coding-style.html>.
195 The checks are meanwhile more complete and yield fewer false positives.
199 * Add new BIO_sendmmsg() and BIO_recvmmsg() BIO methods which allow
200 sending and receiving multiple messages in a single call. An implementation
201 is provided for BIO_dgram. For further details, see BIO_sendmmsg(3).
205 * The `SSL_CERT_PATH` and `SSL_CERT_URI` environment variables are introduced.
206 `SSL_CERT_URI` can be used to specify a URI for a root certificate store. The
207 `SSL_CERT_PATH` environment variable specifies a delimiter-separated list of
208 paths which are searched for root certificates.
210 The existing `SSL_CERT_DIR` environment variable is deprecated.
211 `SSL_CERT_DIR` was previously used to specify either a delimiter-separated
212 list of paths or an URI, which is ambiguous. Setting `SSL_CERT_PATH` causes
213 `SSL_CERT_DIR` to be ignored for the purposes of determining root certificate
214 directories, and setting `SSL_CERT_URI` causes `SSL_CERT_DIR` to be ignored
215 for the purposes of determining root certificate stores.
219 * Support for loading root certificates from the Windows certificate store
220 has been added. The support is in the form of a store which recognises the
221 URI string of `org.openssl.winstore://`. This store is enabled by default and
222 can be disabled using the new compile-time option `no-winstore`.
226 * Enable KTLS with the TLS 1.3 CCM mode ciphersuites. Note that some linux
227 kernel versions that support KTLS have a known bug in CCM processing. That
228 has been fixed in stable releases starting from 5.4.164, 5.10.84, 5.15.7,
229 and all releases since 5.16. KTLS with CCM ciphersuites should be only used
237 For OpenSSL 3.0 a [Migration guide][] has been added, so the CHANGES entries
238 listed here are only a brief description.
239 The migration guide contains more detailed information related to new features,
240 breaking changes, and mappings for the large list of deprecated functions.
242 [Migration guide]: https://github.com/openssl/openssl/tree/master/doc/man7/migration_guide.pod
244 ### Changes between 3.0.6 and 3.0.7 [xx XXX xxxx]
246 * Added RIPEMD160 to the default provider.
250 ### Changes between 3.0.5 and 3.0.6 [11 Oct 2022]
252 * OpenSSL supports creating a custom cipher via the legacy
253 EVP_CIPHER_meth_new() function and associated function calls. This function
254 was deprecated in OpenSSL 3.0 and application authors are instead encouraged
255 to use the new provider mechanism in order to implement custom ciphers.
257 OpenSSL versions 3.0.0 to 3.0.5 incorrectly handle legacy custom ciphers
258 passed to the EVP_EncryptInit_ex2(), EVP_DecryptInit_ex2() and
259 EVP_CipherInit_ex2() functions (as well as other similarly named encryption
260 and decryption initialisation functions). Instead of using the custom cipher
261 directly it incorrectly tries to fetch an equivalent cipher from the
262 available providers. An equivalent cipher is found based on the NID passed to
263 EVP_CIPHER_meth_new(). This NID is supposed to represent the unique NID for a
264 given cipher. However it is possible for an application to incorrectly pass
265 NID_undef as this value in the call to EVP_CIPHER_meth_new(). When NID_undef
266 is used in this way the OpenSSL encryption/decryption initialisation function
267 will match the NULL cipher as being equivalent and will fetch this from the
268 available providers. This will succeed if the default provider has been
269 loaded (or if a third party provider has been loaded that offers this
270 cipher). Using the NULL cipher means that the plaintext is emitted as the
273 Applications are only affected by this issue if they call
274 EVP_CIPHER_meth_new() using NID_undef and subsequently use it in a call to an
275 encryption/decryption initialisation function. Applications that only use
276 SSL/TLS are not impacted by this issue.
281 * Fix LLVM vs Apple LLVM version numbering confusion that caused build failures
286 * Fixed the linux-mips64 Configure target which was missing the
287 SIXTY_FOUR_BIT bn_ops flag. This was causing heap corruption on that
292 * Fix handling of a ticket key callback that returns 0 in TLSv1.3 to not send a
297 * Correctly handle a retransmitted ClientHello in DTLS
301 * Fixed detection of ktls support in cross-compile environment on Linux
305 * Fixed some regressions and test failures when running the 3.0.0 FIPS provider
310 * Fixed SSL_pending() and SSL_has_pending() with DTLS which were failing to
311 report correct results in some cases
315 * Fix UWP builds by defining VirtualLock
319 * For known safe primes use the minimum key length according to RFC 7919.
320 Longer private key sizes unnecessarily raise the cycles needed to compute the
321 shared secret without any increase of the real security. This fixes a
322 regression from 1.1.1 where these shorter keys were generated for the known
327 * Added the loongarch64 target
331 * Fixed EC ASM flag passing. Flags for ASM implementations of EC curves were
332 only passed to the FIPS provider and not to the default or legacy provider.
336 * Fixed reported performance degradation on aarch64. Restored the
337 implementation prior to commit 2621751 ("aes/asm/aesv8-armx.pl: avoid
338 32-bit lane assignment in CTR mode") for 64bit targets only, since it is
339 reportedly 2-17% slower and the silicon errata only affects 32bit targets.
340 The new algorithm is still used for 32 bit targets.
344 * Added a missing header for memcmp that caused compilation failure on some
349 ### Changes between 3.0.4 and 3.0.5 [5 Jul 2022]
351 * The OpenSSL 3.0.4 release introduced a serious bug in the RSA
352 implementation for X86_64 CPUs supporting the AVX512IFMA instructions.
353 This issue makes the RSA implementation with 2048 bit private keys
354 incorrect on such machines and memory corruption will happen during
355 the computation. As a consequence of the memory corruption an attacker
356 may be able to trigger a remote code execution on the machine performing
359 SSL/TLS servers or other servers using 2048 bit RSA private keys running
360 on machines supporting AVX512IFMA instructions of the X86_64 architecture
361 are affected by this issue.
366 * AES OCB mode for 32-bit x86 platforms using the AES-NI assembly optimised
367 implementation would not encrypt the entirety of the data under some
368 circumstances. This could reveal sixteen bytes of data that was
369 preexisting in the memory that wasn't written. In the special case of
370 "in place" encryption, sixteen bytes of the plaintext would be revealed.
372 Since OpenSSL does not support OCB based cipher suites for TLS and DTLS,
373 they are both unaffected.
376 *Alex Chernyakhovsky, David Benjamin, Alejandro Sedeño*
378 ### Changes between 3.0.3 and 3.0.4 [21 Jun 2022]
380 * In addition to the c_rehash shell command injection identified in
381 CVE-2022-1292, further bugs where the c_rehash script does not
382 properly sanitise shell metacharacters to prevent command injection have been
385 When the CVE-2022-1292 was fixed it was not discovered that there
386 are other places in the script where the file names of certificates
387 being hashed were possibly passed to a command executed through the shell.
389 This script is distributed by some operating systems in a manner where
390 it is automatically executed. On such operating systems, an attacker
391 could execute arbitrary commands with the privileges of the script.
393 Use of the c_rehash script is considered obsolete and should be replaced
394 by the OpenSSL rehash command line tool.
397 *Daniel Fiala, Tomáš Mráz*
399 * Case insensitive string comparison no longer uses locales. It has instead
400 been directly implemented.
404 ### Changes between 3.0.2 and 3.0.3 [3 May 2022]
406 * Case insensitive string comparison is reimplemented via new locale-agnostic
407 comparison functions OPENSSL_str[n]casecmp always using the POSIX locale for
408 comparison. The previous implementation had problems when the Turkish locale
413 * Fixed a bug in the c_rehash script which was not properly sanitising shell
414 metacharacters to prevent command injection. This script is distributed by
415 some operating systems in a manner where it is automatically executed. On
416 such operating systems, an attacker could execute arbitrary commands with the
417 privileges of the script.
419 Use of the c_rehash script is considered obsolete and should be replaced
420 by the OpenSSL rehash command line tool.
425 * Fixed a bug in the function `OCSP_basic_verify` that verifies the signer
426 certificate on an OCSP response. The bug caused the function in the case
427 where the (non-default) flag OCSP_NOCHECKS is used to return a postivie
428 response (meaning a successful verification) even in the case where the
429 response signing certificate fails to verify.
431 It is anticipated that most users of `OCSP_basic_verify` will not use the
432 OCSP_NOCHECKS flag. In this case the `OCSP_basic_verify` function will return
433 a negative value (indicating a fatal error) in the case of a certificate
434 verification failure. The normal expected return value in this case would be
437 This issue also impacts the command line OpenSSL "ocsp" application. When
438 verifying an ocsp response with the "-no_cert_checks" option the command line
439 application will report that the verification is successful even though it
440 has in fact failed. In this case the incorrect successful response will also
441 be accompanied by error messages showing the failure and contradicting the
442 apparently successful result.
447 * Fixed a bug where the RC4-MD5 ciphersuite incorrectly used the
448 AAD data as the MAC key. This made the MAC key trivially predictable.
450 An attacker could exploit this issue by performing a man-in-the-middle attack
451 to modify data being sent from one endpoint to an OpenSSL 3.0 recipient such
452 that the modified data would still pass the MAC integrity check.
454 Note that data sent from an OpenSSL 3.0 endpoint to a non-OpenSSL 3.0
455 endpoint will always be rejected by the recipient and the connection will
456 fail at that point. Many application protocols require data to be sent from
457 the client to the server first. Therefore, in such a case, only an OpenSSL
458 3.0 server would be impacted when talking to a non-OpenSSL 3.0 client.
460 If both endpoints are OpenSSL 3.0 then the attacker could modify data being
461 sent in both directions. In this case both clients and servers could be
462 affected, regardless of the application protocol.
464 Note that in the absence of an attacker this bug means that an OpenSSL 3.0
465 endpoint communicating with a non-OpenSSL 3.0 endpoint will fail to complete
466 the handshake when using this ciphersuite.
468 The confidentiality of data is not impacted by this issue, i.e. an attacker
469 cannot decrypt data that has been encrypted using this ciphersuite - they can
472 In order for this attack to work both endpoints must legitimately negotiate
473 the RC4-MD5 ciphersuite. This ciphersuite is not compiled by default in
474 OpenSSL 3.0, and is not available within the default provider or the default
475 ciphersuite list. This ciphersuite will never be used if TLSv1.3 has been
476 negotiated. In order for an OpenSSL 3.0 endpoint to use this ciphersuite the
477 following must have occurred:
479 1) OpenSSL must have been compiled with the (non-default) compile time option
480 enable-weak-ssl-ciphers
482 2) OpenSSL must have had the legacy provider explicitly loaded (either
483 through application code or via configuration)
485 3) The ciphersuite must have been explicitly added to the ciphersuite list
487 4) The libssl security level must have been set to 0 (default is 1)
489 5) A version of SSL/TLS below TLSv1.3 must have been negotiated
491 6) Both endpoints must negotiate the RC4-MD5 ciphersuite in preference to any
492 others that both endpoints have in common
497 * Fix a bug in the OPENSSL_LH_flush() function that breaks reuse of the memory
498 occupied by the removed hash table entries.
500 This function is used when decoding certificates or keys. If a long lived
501 process periodically decodes certificates or keys its memory usage will
502 expand without bounds and the process might be terminated by the operating
503 system causing a denial of service. Also traversing the empty hash table
504 entries will take increasingly more time.
506 Typically such long lived processes might be TLS clients or TLS servers
507 configured to accept client certificate authentication.
510 *Hugo Landau, Aliaksei Levin*
512 * The functions `OPENSSL_LH_stats` and `OPENSSL_LH_stats_bio` now only report
513 the `num_items`, `num_nodes` and `num_alloc_nodes` statistics. All other
514 statistics are no longer supported. For compatibility, these statistics are
515 still listed in the output but are now always reported as zero.
519 ### Changes between 3.0.1 and 3.0.2 [15 Mar 2022]
521 * Fixed a bug in the BN_mod_sqrt() function that can cause it to loop forever
522 for non-prime moduli.
524 Internally this function is used when parsing certificates that contain
525 elliptic curve public keys in compressed form or explicit elliptic curve
526 parameters with a base point encoded in compressed form.
528 It is possible to trigger the infinite loop by crafting a certificate that
529 has invalid explicit curve parameters.
531 Since certificate parsing happens prior to verification of the certificate
532 signature, any process that parses an externally supplied certificate may thus
533 be subject to a denial of service attack. The infinite loop can also be
534 reached when parsing crafted private keys as they can contain explicit
535 elliptic curve parameters.
537 Thus vulnerable situations include:
539 - TLS clients consuming server certificates
540 - TLS servers consuming client certificates
541 - Hosting providers taking certificates or private keys from customers
542 - Certificate authorities parsing certification requests from subscribers
543 - Anything else which parses ASN.1 elliptic curve parameters
545 Also any other applications that use the BN_mod_sqrt() where the attacker
546 can control the parameter values are vulnerable to this DoS issue.
551 * Add ciphersuites based on DHE_PSK (RFC 4279) and ECDHE_PSK (RFC 5489)
552 to the list of ciphersuites providing Perfect Forward Secrecy as
553 required by SECLEVEL >= 3.
555 *Dmitry Belyavskiy, Nicola Tuveri*
557 * Made the AES constant time code for no-asm configurations
558 optional due to the resulting 95% performance degradation.
559 The AES constant time code can be enabled, for no assembly
560 builds, with: ./config no-asm -DOPENSSL_AES_CONST_TIME
564 * Fixed PEM_write_bio_PKCS8PrivateKey() to make it possible to use empty
569 * The negative return value handling of the certificate verification callback
570 was reverted. The replacement is to set the verification retry state with
571 the SSL_set_retry_verify() function.
575 ### Changes between 3.0.0 and 3.0.1 [14 Dec 2021]
577 * Fixed invalid handling of X509_verify_cert() internal errors in libssl
578 Internally libssl in OpenSSL calls X509_verify_cert() on the client side to
579 verify a certificate supplied by a server. That function may return a
580 negative return value to indicate an internal error (for example out of
581 memory). Such a negative return value is mishandled by OpenSSL and will cause
582 an IO function (such as SSL_connect() or SSL_do_handshake()) to not indicate
583 success and a subsequent call to SSL_get_error() to return the value
584 SSL_ERROR_WANT_RETRY_VERIFY. This return value is only supposed to be
585 returned by OpenSSL if the application has previously called
586 SSL_CTX_set_cert_verify_callback(). Since most applications do not do this
587 the SSL_ERROR_WANT_RETRY_VERIFY return value from SSL_get_error() will be
588 totally unexpected and applications may not behave correctly as a result. The
589 exact behaviour will depend on the application but it could result in
590 crashes, infinite loops or other similar incorrect responses.
592 This issue is made more serious in combination with a separate bug in OpenSSL
593 3.0 that will cause X509_verify_cert() to indicate an internal error when
594 processing a certificate chain. This will occur where a certificate does not
595 include the Subject Alternative Name extension but where a Certificate
596 Authority has enforced name constraints. This issue can occur even with valid
602 * Corrected a few file name and file reference bugs in the build,
603 installation and setup scripts, which lead to installation verification
604 failures. Slightly enhanced the installation verification script.
608 * Fixed EVP_PKEY_eq() to make it possible to use it with strictly private
613 * Fixed PVK encoder to properly query for the passphrase.
617 * Multiple fixes in the OSSL_HTTP API functions.
621 * Allow sign extension in OSSL_PARAM_allocate_from_text() for the
622 OSSL_PARAM_INTEGER data type and return error on negative numbers
623 used with the OSSL_PARAM_UNSIGNED_INTEGER data type. Make
624 OSSL_PARAM_BLD_push_BN{,_pad}() return an error on negative numbers.
628 * Allow copying uninitialized digest contexts with EVP_MD_CTX_copy_ex.
632 * Fixed detection of ARMv7 and ARM64 CPU features on FreeBSD.
636 * Multiple threading fixes.
640 * Added NULL digest implementation to keep compatibility with 1.1.1 version.
644 * Allow fetching an operation from the provider that owns an unexportable key
645 as a fallback if that is still allowed by the property query.
649 ### Changes between 1.1.1 and 3.0.0 [7 Sep 2021]
651 * TLS_MAX_VERSION, DTLS_MAX_VERSION and DTLS_MIN_VERSION constants are now
656 * The `OPENSSL_s390xcap` environment variable can be used to set bits in the
657 S390X capability vector to zero. This simplifies testing of different code
658 paths on S390X architecture.
662 * Encrypting more than 2^64 TLS records with AES-GCM is disallowed
663 as per FIPS 140-2 IG A.5 "Key/IV Pair Uniqueness Requirements from
664 SP 800-38D". The communication will fail at this point.
668 * The EC_GROUP_clear_free() function is deprecated as there is nothing
669 confidential in EC_GROUP data.
673 * The byte order mark (BOM) character is ignored if encountered at the
674 beginning of a PEM-formatted file.
678 * Added CMS support for the Russian GOST algorithms.
682 * Due to move of the implementation of cryptographic operations
683 to the providers, validation of various operation parameters can
684 be postponed until the actual operation is executed where previously
685 it happened immediately when an operation parameter was set.
687 For example when setting an unsupported curve with
688 EVP_PKEY_CTX_set_ec_paramgen_curve_nid() this function call will not
689 fail but later keygen operations with the EVP_PKEY_CTX will fail.
691 *OpenSSL team members and many third party contributors*
693 * The EVP_get_cipherbyname() function will return NULL for algorithms such as
694 "AES-128-SIV", "AES-128-CBC-CTS" and "CAMELLIA-128-CBC-CTS" which were
695 previously only accessible via low-level interfaces. Use EVP_CIPHER_fetch()
696 instead to retrieve these algorithms from a provider.
700 * On build targets where the multilib postfix is set in the build
701 configuration the libdir directory was changing based on whether
702 the lib directory with the multilib postfix exists on the system
703 or not. This unpredictable behavior was removed and eventual
704 multilib postfix is now always added to the default libdir. Use
705 `--libdir=lib` to override the libdir if adding the postfix is
710 * The triple DES key wrap functionality now conforms to RFC 3217 but is
711 no longer interoperable with OpenSSL 1.1.1.
715 * The ERR_GET_FUNC() function was removed. With the loss of meaningful
716 function codes, this function can only cause problems for calling
721 * Add a configurable flag to output date formats as ISO 8601. Does not
722 change the default date format.
726 * Version of MSVC earlier than 1300 could get link warnings, which could
727 be suppressed if the undocumented -DI_CAN_LIVE_WITH_LNK4049 was set.
728 Support for this flag has been removed.
732 * Rework and make DEBUG macros consistent. Remove unused -DCONF_DEBUG,
733 -DBN_CTX_DEBUG, and REF_PRINT. Add a new tracing category and use it for
734 printing reference counts. Rename -DDEBUG_UNUSED to -DUNUSED_RESULT_DEBUG
735 Fix BN_DEBUG_RAND so it compiles and, when set, force DEBUG_RAND to be set
736 also. Rename engine_debug_ref to be ENGINE_REF_PRINT also for consistency.
740 * The signatures of the functions to get and set options on SSL and
741 SSL_CTX objects changed from "unsigned long" to "uint64_t" type.
742 Some source code changes may be required.
746 * The public definitions of conf_method_st and conf_st have been
747 deprecated. They will be made opaque in a future release.
749 *Rich Salz and Tomáš Mráz*
751 * Client-initiated renegotiation is disabled by default. To allow it, use
752 the -client_renegotiation option, the SSL_OP_ALLOW_CLIENT_RENEGOTIATION
753 flag, or the "ClientRenegotiation" config parameter as appropriate.
757 * Add "abspath" and "includedir" pragma's to config files, to prevent,
758 or modify relative pathname inclusion.
762 * OpenSSL includes a cryptographic module that is intended to be FIPS 140-2
763 validated. Please consult the README-FIPS and
764 README-PROVIDERS files, as well as the migration guide.
766 *OpenSSL team members and many third party contributors*
768 * For the key types DH and DHX the allowed settable parameters are now different.
772 * The openssl commands that read keys, certificates, and CRLs now
773 automatically detect the PEM or DER format of the input files.
775 *David von Oheimb, Richard Levitte, and Tomáš Mráz*
777 * Added enhanced PKCS#12 APIs which accept a library context.
781 * The default manual page suffix ($MANSUFFIX) has been changed to "ossl"
785 * Added support for Kernel TLS (KTLS).
787 *Boris Pismenny, John Baldwin and Andrew Gallatin*
789 * Support for RFC 5746 secure renegotiation is now required by default for
790 SSL or TLS connections to succeed.
794 * The signature of the `copy` functional parameter of the
795 EVP_PKEY_meth_set_copy() function has changed so its `src` argument is
796 now `const EVP_PKEY_CTX *` instead of `EVP_PKEY_CTX *`. Similarly
797 the signature of the `pub_decode` functional parameter of the
798 EVP_PKEY_asn1_set_public() function has changed so its `pub` argument is
799 now `const X509_PUBKEY *` instead of `X509_PUBKEY *`.
803 * The error return values from some control calls (ctrl) have changed.
807 * A public key check is now performed during EVP_PKEY_derive_set_peer().
811 * Many functions in the EVP_ namespace that are getters of values from
812 implementations or contexts were renamed to include get or get0 in their
813 names. Old names are provided as macro aliases for compatibility and
818 * The EVP_PKEY_CTRL_PKCS7_ENCRYPT, EVP_PKEY_CTRL_PKCS7_DECRYPT,
819 EVP_PKEY_CTRL_PKCS7_SIGN, EVP_PKEY_CTRL_CMS_ENCRYPT,
820 EVP_PKEY_CTRL_CMS_DECRYPT, and EVP_PKEY_CTRL_CMS_SIGN control operations
825 * The EVP_PKEY_public_check() and EVP_PKEY_param_check() functions now work for
828 * The output from the command line applications may have minor
833 * The output from numerous "printing" may have minor changes.
837 * Windows thread synchronization uses read/write primitives (SRWLock) when
838 supported by the OS, otherwise CriticalSection continues to be used.
842 * Add filter BIO BIO_f_readbuffer() that allows BIO_tell() and BIO_seek() to
843 work on read only BIO source/sinks that do not support these functions.
844 This allows piping or redirection of a file BIO using stdin to be buffered
845 into memory. This is used internally in OSSL_DECODER_from_bio().
849 * OSSL_STORE_INFO_get_type() may now return an additional value. In 1.1.1
850 this function would return one of the values OSSL_STORE_INFO_NAME,
851 OSSL_STORE_INFO_PKEY, OSSL_STORE_INFO_PARAMS, OSSL_STORE_INFO_CERT or
852 OSSL_STORE_INFO_CRL. Decoded public keys would previously have been reported
853 as type OSSL_STORE_INFO_PKEY in 1.1.1. In 3.0 decoded public keys are now
854 reported as having the new type OSSL_STORE_INFO_PUBKEY. Applications
855 using this function should be amended to handle the changed return value.
859 * Improved adherence to Enhanced Security Services (ESS, RFC 2634 and RFC 5035)
860 for the TSP and CMS Advanced Electronic Signatures (CAdES) implementations.
861 As required by RFC 5035 check both ESSCertID and ESSCertIDv2 if both present.
862 Correct the semantics of checking the validation chain in case ESSCertID{,v2}
863 contains more than one certificate identifier: This means that all
864 certificates referenced there MUST be part of the validation chain.
868 * The implementation of older EVP ciphers related to CAST, IDEA, SEED, RC2, RC4,
869 RC5, DESX and DES have been moved to the legacy provider.
873 * The implementation of the EVP digests MD2, MD4, MDC2, WHIRLPOOL and
874 RIPEMD-160 have been moved to the legacy provider.
878 * The deprecated function EVP_PKEY_get0() now returns NULL being called for a
883 * The deprecated functions EVP_PKEY_get0_RSA(),
884 EVP_PKEY_get0_DSA(), EVP_PKEY_get0_EC_KEY(), EVP_PKEY_get0_DH(),
885 EVP_PKEY_get0_hmac(), EVP_PKEY_get0_poly1305() and EVP_PKEY_get0_siphash() as
886 well as the similarly named "get1" functions behave differently in
891 * A number of functions handling low-level keys or engines were deprecated
892 including EVP_PKEY_set1_engine(), EVP_PKEY_get0_engine(), EVP_PKEY_assign(),
893 EVP_PKEY_get0(), EVP_PKEY_get0_hmac(), EVP_PKEY_get0_poly1305() and
894 EVP_PKEY_get0_siphash().
898 * PKCS#5 PBKDF1 key derivation has been moved from PKCS5_PBE_keyivgen() into
899 the legacy crypto provider as an EVP_KDF. Applications requiring this KDF
900 will need to load the legacy crypto provider. This includes these PBE
901 algorithms which use this KDF:
902 - NID_pbeWithMD2AndDES_CBC
903 - NID_pbeWithMD5AndDES_CBC
904 - NID_pbeWithSHA1AndRC2_CBC
905 - NID_pbeWithMD2AndRC2_CBC
906 - NID_pbeWithMD5AndRC2_CBC
907 - NID_pbeWithSHA1AndDES_CBC
911 * Deprecated obsolete BIO_set_callback(), BIO_get_callback(), and
912 BIO_debug_callback() functions.
916 * Deprecated obsolete EVP_PKEY_CTX_get0_dh_kdf_ukm() and
917 EVP_PKEY_CTX_get0_ecdh_kdf_ukm() functions.
921 * The RAND_METHOD APIs have been deprecated.
925 * The SRP APIs have been deprecated.
929 * Add a compile time option to prevent the caching of provider fetched
930 algorithms. This is enabled by including the no-cached-fetch option
931 at configuration time.
935 * pkcs12 now uses defaults of PBKDF2, AES and SHA-256, with a MAC iteration
936 count of PKCS12_DEFAULT_ITER.
938 *Tomáš Mráz and Sahana Prasad*
940 * The openssl speed command does not use low-level API calls anymore.
944 * Parallel dual-prime 1024-bit modular exponentiation for AVX512_IFMA
947 *Ilya Albrekht, Sergey Kirillov, Andrey Matyukov (Intel Corp)*
949 * Combining the Configure options no-ec and no-dh no longer disables TLSv1.3.
953 * Implemented support for fully "pluggable" TLSv1.3 groups. This means that
954 providers may supply their own group implementations (using either the "key
955 exchange" or the "key encapsulation" methods) which will automatically be
956 detected and used by libssl.
958 *Matt Caswell, Nicola Tuveri*
960 * The undocumented function X509_certificate_type() has been deprecated;
964 * Deprecated the obsolete BN_pseudo_rand() and BN_pseudo_rand_range().
968 * Removed RSA padding mode for SSLv23 (which was only used for
969 SSLv2). This includes the functions RSA_padding_check_SSLv23() and
970 RSA_padding_add_SSLv23() and the `-ssl` option in the deprecated
975 * Deprecated the obsolete X9.31 RSA key generation related functions.
977 * While a callback function set via `SSL_CTX_set_cert_verify_callback()`
978 is not allowed to return a value > 1, this is no more taken as failure.
980 *Viktor Dukhovni and David von Oheimb*
982 * Deprecated the obsolete X9.31 RSA key generation related functions
983 BN_X931_generate_Xpq(), BN_X931_derive_prime_ex(), and
984 BN_X931_generate_prime_ex().
988 * The default key generation method for the regular 2-prime RSA keys was
989 changed to the FIPS 186-4 B.3.6 method.
993 * Deprecated the BN_is_prime_ex() and BN_is_prime_fasttest_ex() functions.
997 * Deprecated EVP_MD_CTX_set_update_fn() and EVP_MD_CTX_update_fn().
1001 * Deprecated the type OCSP_REQ_CTX and the functions OCSP_REQ_CTX_*() and
1002 replaced with OSSL_HTTP_REQ_CTX and the functions OSSL_HTTP_REQ_CTX_*().
1004 *Rich Salz, Richard Levitte, and David von Oheimb*
1006 * Deprecated `X509_http_nbio()` and `X509_CRL_http_nbio()`.
1010 * Deprecated `OCSP_parse_url()`.
1014 * Validation of SM2 keys has been separated from the validation of regular EC
1019 * Behavior of the `pkey` app is changed, when using the `-check` or `-pubcheck`
1020 switches: a validation failure triggers an early exit, returning a failure
1021 exit status to the parent process.
1025 * Changed behavior of SSL_CTX_set_ciphersuites() and SSL_set_ciphersuites()
1026 to ignore unknown ciphers.
1030 * The `-cipher-commands` and `-digest-commands` options
1031 of the command line utility `list` have been deprecated.
1032 Instead use the `-cipher-algorithms` and `-digest-algorithms` options.
1036 * Added convenience functions for generating asymmetric key pairs:
1037 The 'quick' one-shot (yet somewhat limited) function L<EVP_PKEY_Q_keygen(3)>
1038 and macros for the most common cases: <EVP_RSA_gen(3)> and L<EVP_EC_gen(3)>.
1042 * All of the low-level EC_KEY functions have been deprecated.
1044 *Shane Lontis, Paul Dale, Richard Levitte, and Tomáš Mráz*
1046 * Deprecated all the libcrypto and libssl error string loading
1051 * The functions SSL_CTX_set_tmp_dh_callback and SSL_set_tmp_dh_callback, as
1052 well as the macros SSL_CTX_set_tmp_dh() and SSL_set_tmp_dh() have been
1057 * The `-crypt` option to the `passwd` command line tool has been removed.
1061 * The -C option to the `x509`, `dhparam`, `dsaparam`, and `ecparam` commands
1066 * Add support for AES Key Wrap inverse ciphers to the EVP layer.
1070 * Deprecated EVP_PKEY_set1_tls_encodedpoint() and
1071 EVP_PKEY_get1_tls_encodedpoint().
1075 * The security callback, which can be customised by application code, supports
1076 the security operation SSL_SECOP_TMP_DH. One location of the "other" parameter
1077 was incorrectly passing a DH object. It now passed an EVP_PKEY in all cases.
1081 * Add PKCS7_get_octet_string() and PKCS7_type_is_other() to the public
1082 interface. Their functionality remains unchanged.
1086 * Added new option for 'openssl list', '-providers', which will display the
1087 list of loaded providers, their names, version and status. It optionally
1088 displays their gettable parameters.
1092 * Removed EVP_PKEY_set_alias_type().
1096 * Deprecated `EVP_PKEY_CTX_set_rsa_keygen_pubexp()` and introduced
1097 `EVP_PKEY_CTX_set1_rsa_keygen_pubexp()`, which is now preferred.
1101 * Changed all "STACK" functions to be macros instead of inline functions. Macro
1102 parameters are still checked for type safety at compile time via helper
1107 * Remove the RAND_DRBG API
1109 *Paul Dale and Matthias St. Pierre*
1111 * Allow `SSL_set1_host()` and `SSL_add1_host()` to take IP literal addresses
1112 as well as actual hostnames.
1116 * The 'MinProtocol' and 'MaxProtocol' configuration commands now silently
1117 ignore TLS protocol version bounds when configuring DTLS-based contexts, and
1118 conversely, silently ignore DTLS protocol version bounds when configuring
1119 TLS-based contexts. The commands can be repeated to set bounds of both
1120 types. The same applies with the corresponding "min_protocol" and
1121 "max_protocol" command-line switches, in case some application uses both TLS
1124 SSL_CTX instances that are created for a fixed protocol version (e.g.
1125 `TLSv1_server_method()`) also silently ignore version bounds. Previously
1126 attempts to apply bounds to these protocol versions would result in an
1127 error. Now only the "version-flexible" SSL_CTX instances are subject to
1128 limits in configuration files in command-line options.
1132 * Deprecated the `ENGINE` API. Engines should be replaced with providers
1137 * Reworked the recorded ERR codes to make better space for system errors.
1138 To distinguish them, the macro `ERR_SYSTEM_ERROR()` indicates if the
1139 given code is a system error (true) or an OpenSSL error (false).
1143 * Reworked the test perl framework to better allow parallel testing.
1145 *Nicola Tuveri and David von Oheimb*
1147 * Added ciphertext stealing algorithms AES-128-CBC-CTS, AES-192-CBC-CTS and
1148 AES-256-CBC-CTS to the providers. CS1, CS2 and CS3 variants are supported.
1152 * 'Configure' has been changed to figure out the configuration target if
1153 none is given on the command line. Consequently, the 'config' script is
1154 now only a mere wrapper. All documentation is changed to only mention
1157 *Rich Salz and Richard Levitte*
1159 * Added a library context `OSSL_LIB_CTX` that applications as well as
1160 other libraries can use to form a separate context within which
1161 libcrypto operations are performed.
1165 * Added various `_ex` functions to the OpenSSL API that support using
1166 a non-default `OSSL_LIB_CTX`.
1170 * Handshake now fails if Extended Master Secret extension is dropped
1175 * Dropped interactive mode from the `openssl` program.
1179 * Deprecated `EVP_PKEY_cmp()` and `EVP_PKEY_cmp_parameters()`.
1181 *David von Oheimb and Shane Lontis*
1183 * Deprecated `EC_METHOD_get_field_type()`.
1187 * Deprecated EC_GFp_simple_method(), EC_GFp_mont_method(),
1188 EC_GF2m_simple_method(), EC_GFp_nist_method(), EC_GFp_nistp224_method()
1189 EC_GFp_nistp256_method(), and EC_GFp_nistp521_method().
1193 * Deprecated EC_GROUP_new(), EC_GROUP_method_of(), and EC_POINT_method_of().
1197 * Add CAdES-BES signature verification support, mostly derived
1198 from ESSCertIDv2 TS (RFC 5816) contribution by Marek Klein.
1200 *Filipe Raimundo da Silva*
1202 * Add CAdES-BES signature scheme and attributes support (RFC 5126) to CMS API.
1206 * Added the AuthEnvelopedData content type structure (RFC 5083) with AES-GCM
1207 parameter (RFC 5084) for the Cryptographic Message Syntax (CMS).
1211 * Deprecated EC_POINT_make_affine() and EC_POINTs_make_affine().
1215 * Deprecated EC_GROUP_precompute_mult(), EC_GROUP_have_precompute_mult(), and
1216 EC_KEY_precompute_mult().
1220 * Deprecated EC_POINTs_mul().
1224 * Removed FIPS_mode() and FIPS_mode_set().
1228 * The SSL option SSL_OP_IGNORE_UNEXPECTED_EOF is introduced.
1232 * Deprecated EC_POINT_set_Jprojective_coordinates_GFp() and
1233 EC_POINT_get_Jprojective_coordinates_GFp().
1237 * Added OSSL_PARAM_BLD to the public interface. This allows OSSL_PARAM
1238 arrays to be more easily constructed via a series of utility functions.
1239 Create a parameter builder using OSSL_PARAM_BLD_new(), add parameters using
1240 the various push functions and finally convert to a passable OSSL_PARAM
1241 array using OSSL_PARAM_BLD_to_param().
1245 * The security strength of SHA1 and MD5 based signatures in TLS has been
1250 * Added EVP_PKEY_set_type_by_keymgmt(), to initialise an EVP_PKEY to
1251 contain a provider side internal key.
1255 * ASN1_verify(), ASN1_digest() and ASN1_sign() have been deprecated.
1259 * Project text documents not yet having a proper file name extension
1260 (`HACKING`, `LICENSE`, `NOTES*`, `README*`, `VERSION`) have been renamed to
1261 `*.md` as far as reasonable, else `*.txt`, for better use with file managers.
1265 * The main project documents (README, NEWS, CHANGES, INSTALL, SUPPORT)
1266 have been converted to Markdown with the goal to produce documents
1267 which not only look pretty when viewed online in the browser, but
1268 remain well readable inside a plain text editor.
1270 To achieve this goal, a 'minimalistic' Markdown style has been applied
1271 which avoids formatting elements that interfere too much with the
1272 reading flow in the text file. For example, it
1274 * avoids [ATX headings][] and uses [setext headings][] instead
1275 (which works for `<h1>` and `<h2>` headings only).
1276 * avoids [inline links][] and uses [reference links][] instead.
1277 * avoids [fenced code blocks][] and uses [indented code blocks][] instead.
1279 [ATX headings]: https://github.github.com/gfm/#atx-headings
1280 [setext headings]: https://github.github.com/gfm/#setext-headings
1281 [inline links]: https://github.github.com/gfm/#inline-link
1282 [reference links]: https://github.github.com/gfm/#reference-link
1283 [fenced code blocks]: https://github.github.com/gfm/#fenced-code-blocks
1284 [indented code blocks]: https://github.github.com/gfm/#indented-code-blocks
1286 *Matthias St. Pierre*
1288 * The test suite is changed to preserve results of each test recipe.
1289 A new directory test-runs/ with subdirectories named like the
1290 test recipes are created in the build tree for this purpose.
1294 * Added an implementation of CMP and CRMF (RFC 4210, RFC 4211 RFC 6712).
1295 This adds `crypto/cmp/`, `crpyto/crmf/`, `apps/cmp.c`, and `test/cmp_*`.
1296 See L<openssl-cmp(1)> and L<OSSL_CMP_exec_IR_ses(3)> as starting points.
1298 *David von Oheimb, Martin Peylo*
1300 * Generalized the HTTP client code from `crypto/ocsp/` into `crpyto/http/`.
1301 It supports arbitrary request and response content types, GET redirection,
1302 TLS, connections via HTTP(S) proxies, connections and exchange via
1303 user-defined BIOs (allowing implicit connections), persistent connections,
1304 and timeout checks. See L<OSSL_HTTP_transfer(3)> etc. for details.
1305 The legacy OCSP-focused (and only partly documented) API
1306 is retained for backward compatibility, while most of it is deprecated.
1310 * Added `util/check-format.pl`, a tool for checking adherence to the
1311 OpenSSL coding style <https://www.openssl.org/policies/codingstyle.html>.
1312 The checks performed are incomplete and yield some false positives.
1313 Still the tool should be useful for detecting most typical glitches.
1317 * `BIO_do_connect()` and `BIO_do_handshake()` have been extended:
1318 If domain name resolution yields multiple IP addresses all of them are tried
1319 after `connect()` failures.
1323 * All of the low-level RSA functions have been deprecated.
1327 * X509 certificates signed using SHA1 are no longer allowed at security
1332 * The command line utilities dhparam, dsa, gendsa and dsaparam have been
1333 modified to use PKEY APIs. These commands are now in maintenance mode
1334 and no new features will be added to them.
1338 * The command line utility rsautl has been deprecated.
1342 * The command line utilities genrsa and rsa have been modified to use PKEY
1343 APIs. They now write PKCS#8 keys by default. These commands are now in
1344 maintenance mode and no new features will be added to them.
1348 * All of the low-level DH functions have been deprecated.
1350 *Paul Dale and Matt Caswell*
1352 * All of the low-level DSA functions have been deprecated.
1356 * Reworked the treatment of EC EVP_PKEYs with the SM2 curve to
1357 automatically become EVP_PKEY_SM2 rather than EVP_PKEY_EC.
1361 * Deprecated low-level ECDH and ECDSA functions.
1365 * Deprecated EVP_PKEY_decrypt_old() and EVP_PKEY_encrypt_old().
1369 * Enhanced the documentation of EVP_PKEY_get_size(), EVP_PKEY_get_bits()
1370 and EVP_PKEY_get_security_bits(). Especially EVP_PKEY_get_size() needed
1371 a new formulation to include all the things it can be used for,
1372 as well as words of caution.
1376 * The SSL_CTX_set_tlsext_ticket_key_cb(3) function has been deprecated.
1380 * All of the low-level HMAC functions have been deprecated.
1382 *Paul Dale and David von Oheimb*
1384 * Over two thousand fixes were made to the documentation, including:
1385 - Common options (such as -rand/-writerand, TLS version control, etc)
1386 were refactored and point to newly-enhanced descriptions in openssl.pod.
1387 - Added style conformance for all options (with help from Richard Levitte),
1388 documented all reported missing options, added a CI build to check
1389 that all options are documented and that no unimplemented options
1391 - Documented some internals, such as all use of environment variables.
1392 - Addressed all internal broken L<> references.
1396 * All of the low-level CMAC functions have been deprecated.
1400 * The low-level MD2, MD4, MD5, MDC2, RIPEMD160 and Whirlpool digest
1401 functions have been deprecated.
1403 *Paul Dale and David von Oheimb*
1405 * Corrected the documentation of the return values from the `EVP_DigestSign*`
1406 set of functions. The documentation mentioned negative values for some
1407 errors, but this was never the case, so the mention of negative values
1410 Code that followed the documentation and thereby check with something
1411 like `EVP_DigestSignInit(...) <= 0` will continue to work undisturbed.
1415 * All of the low-level cipher functions have been deprecated.
1417 *Matt Caswell and Paul Dale*
1419 * Removed include/openssl/opensslconf.h.in and replaced it with
1420 include/openssl/configuration.h.in, which differs in not including
1421 <openssl/macros.h>. A short header include/openssl/opensslconf.h
1422 was added to include both.
1424 This allows internal hacks where one might need to modify the set
1425 of configured macros, for example this if deprecated symbols are
1426 still supposed to be available internally:
1428 #include <openssl/configuration.h>
1430 #undef OPENSSL_NO_DEPRECATED
1431 #define OPENSSL_SUPPRESS_DEPRECATED
1433 #include <openssl/macros.h>
1435 This should not be used by applications that use the exported
1436 symbols, as that will lead to linking errors.
1440 * Fixed an overflow bug in the x64_64 Montgomery squaring procedure
1441 used in exponentiation with 512-bit moduli. No EC algorithms are
1442 affected. Analysis suggests that attacks against 2-prime RSA1024,
1443 3-prime RSA1536, and DSA1024 as a result of this defect would be very
1444 difficult to perform and are not believed likely. Attacks against DH512
1445 are considered just feasible. However, for an attack the target would
1446 have to re-use the DH512 private key, which is not recommended anyway.
1447 Also applications directly using the low-level API BN_mod_exp may be
1448 affected if they use BN_FLG_CONSTTIME.
1453 * Most memory-debug features have been deprecated, and the functionality
1454 replaced with no-ops.
1458 * Added documentation for the STACK API.
1462 * Introduced a new method type and API, OSSL_ENCODER, to represent
1463 generic encoders. These do the same sort of job that PEM writers
1464 and d2i functions do, but with support for methods supplied by
1465 providers, and the possibility for providers to support other
1470 * Introduced a new method type and API, OSSL_DECODER, to represent
1471 generic decoders. These do the same sort of job that PEM readers
1472 and i2d functions do, but with support for methods supplied by
1473 providers, and the possibility for providers to support other
1478 * Added a .pragma directive to the syntax of configuration files, to
1479 allow varying behavior in a supported and predictable manner.
1480 Currently added pragma:
1484 This allows dollar signs to be a keyword character unless it's
1485 followed by a opening brace or parenthesis. This is useful for
1486 platforms where dollar signs are commonly used in names, such as
1487 volume names and system directory names on VMS.
1491 * Added functionality to create an EVP_PKEY from user data.
1495 * Change the interpretation of the '--api' configuration option to
1496 mean that this is a desired API compatibility level with no
1497 further meaning. The previous interpretation, that this would
1498 also mean to remove all deprecated symbols up to and including
1499 the given version, no requires that 'no-deprecated' is also used
1500 in the configuration.
1502 When building applications, the desired API compatibility level
1503 can be set with the OPENSSL_API_COMPAT macro like before. For
1504 API compatibility version below 3.0, the old style numerical
1505 value is valid as before, such as -DOPENSSL_API_COMPAT=0x10100000L.
1506 For version 3.0 and on, the value is expected to be the decimal
1507 value calculated from the major and minor version like this:
1509 MAJOR * 10000 + MINOR * 100
1513 -DOPENSSL_API_COMPAT=30000 For 3.0
1514 -DOPENSSL_API_COMPAT=30200 For 3.2
1516 To hide declarations that are deprecated up to and including the
1517 given API compatibility level, -DOPENSSL_NO_DEPRECATED must be
1518 given when building the application as well.
1522 * Added the X509_LOOKUP_METHOD called X509_LOOKUP_store, to allow
1523 access to certificate and CRL stores via URIs and OSSL_STORE
1526 This adds the following functions:
1528 - X509_LOOKUP_store()
1529 - X509_STORE_load_file()
1530 - X509_STORE_load_path()
1531 - X509_STORE_load_store()
1532 - SSL_add_store_cert_subjects_to_stack()
1533 - SSL_CTX_set_default_verify_store()
1534 - SSL_CTX_load_verify_file()
1535 - SSL_CTX_load_verify_dir()
1536 - SSL_CTX_load_verify_store()
1540 * Added a new method to gather entropy on VMS, based on SYS$GET_ENTROPY.
1541 The presence of this system service is determined at run-time.
1545 * Added functionality to create an EVP_PKEY context based on data
1546 for methods from providers. This takes an algorithm name and a
1547 property query string and simply stores them, with the intent
1548 that any operation that uses this context will use those strings
1549 to fetch the needed methods implicitly, thereby making the port
1550 of application written for pre-3.0 OpenSSL easier.
1554 * The undocumented function NCONF_WIN32() has been deprecated; for
1555 conversion details see the HISTORY section of doc/man5/config.pod
1559 * Introduced the new functions EVP_DigestSignInit_ex() and
1560 EVP_DigestVerifyInit_ex(). The macros EVP_DigestSignUpdate() and
1561 EVP_DigestVerifyUpdate() have been converted to functions. See the man
1562 pages for further details.
1566 * Over two thousand fixes were made to the documentation, including:
1567 adding missing command flags, better style conformance, documentation
1570 *Rich Salz, Richard Levitte*
1572 * s390x assembly pack: add hardware-support for P-256, P-384, P-521,
1573 X25519, X448, Ed25519 and Ed448.
1577 * Print all values for a PKCS#12 attribute with 'openssl pkcs12', not just
1582 * Deprecated the public definition of `ERR_STATE` as well as the function
1583 `ERR_get_state()`. This is done in preparation of making `ERR_STATE` an
1588 * Added ERR functionality to give callers access to the stored function
1589 names that have replaced the older function code based functions.
1591 New functions are ERR_peek_error_func(), ERR_peek_last_error_func(),
1592 ERR_peek_error_data(), ERR_peek_last_error_data(), ERR_get_error_all(),
1593 ERR_peek_error_all() and ERR_peek_last_error_all().
1595 Deprecate ERR functions ERR_get_error_line(), ERR_get_error_line_data(),
1596 ERR_peek_error_line_data(), ERR_peek_last_error_line_data() and
1597 ERR_func_error_string().
1601 * Extended testing to be verbose for failing tests only. The make variables
1602 VERBOSE_FAILURE or VF can be used to enable this:
1604 $ make VF=1 test # Unix
1605 $ mms /macro=(VF=1) test ! OpenVMS
1606 $ nmake VF=1 test # Windows
1610 * Added the `-copy_extensions` option to the `x509` command for use with
1611 `-req` and `-x509toreq`. When given with the `copy` or `copyall` argument,
1612 all extensions in the request are copied to the certificate or vice versa.
1614 *David von Oheimb*, *Kirill Stefanenkov <kirill_stefanenkov@rambler.ru>*
1616 * Added the `-copy_extensions` option to the `req` command for use with
1617 `-x509`. When given with the `copy` or `copyall` argument,
1618 all extensions in the certification request are copied to the certificate.
1622 * The `x509`, `req`, and `ca` commands now make sure that X.509v3 certificates
1623 they generate are by default RFC 5280 compliant in the following sense:
1624 There is a subjectKeyIdentifier extension with a hash value of the public key
1625 and for not self-signed certs there is an authorityKeyIdentifier extension
1626 with a keyIdentifier field or issuer information identifying the signing key.
1627 This is done unless some configuration overrides the new default behavior,
1628 such as `subjectKeyIdentifier = none` and `authorityKeyIdentifier = none`.
1632 * Added several checks to `X509_verify_cert()` according to requirements in
1633 RFC 5280 in case `X509_V_FLAG_X509_STRICT` is set
1634 (which may be done by using the CLI option `-x509_strict`):
1635 * The basicConstraints of CA certificates must be marked critical.
1636 * CA certificates must explicitly include the keyUsage extension.
1637 * If a pathlenConstraint is given the key usage keyCertSign must be allowed.
1638 * The issuer name of any certificate must not be empty.
1639 * The subject name of CA certs, certs with keyUsage crlSign,
1640 and certs without subjectAlternativeName must not be empty.
1641 * If a subjectAlternativeName extension is given it must not be empty.
1642 * The signatureAlgorithm field and the cert signature must be consistent.
1643 * Any given authorityKeyIdentifier and any given subjectKeyIdentifier
1644 must not be marked critical.
1645 * The authorityKeyIdentifier must be given for X.509v3 certs
1646 unless they are self-signed.
1647 * The subjectKeyIdentifier must be given for all X.509v3 CA certs.
1651 * Certificate verification using `X509_verify_cert()` meanwhile rejects EC keys
1652 with explicit curve parameters (specifiedCurve) as required by RFC 5480.
1656 * For built-in EC curves, ensure an EC_GROUP built from the curve name is
1657 used even when parsing explicit parameters, when loading a encoded key
1658 or calling `EC_GROUP_new_from_ecpkparameters()`/
1659 `EC_GROUP_new_from_ecparameters()`.
1660 This prevents bypass of security hardening and performance gains,
1661 especially for curves with specialized EC_METHODs.
1662 By default, if a key encoded with explicit parameters is loaded and later
1663 encoded, the output is still encoded with explicit parameters, even if
1664 internally a "named" EC_GROUP is used for computation.
1668 * Compute ECC cofactors if not provided during EC_GROUP construction. Before
1669 this change, EC_GROUP_set_generator would accept order and/or cofactor as
1670 NULL. After this change, only the cofactor parameter can be NULL. It also
1671 does some minimal sanity checks on the passed order.
1676 * Fixed a padding oracle in PKCS7_dataDecode and CMS_decrypt_set1_pkey.
1677 An attack is simple, if the first CMS_recipientInfo is valid but the
1678 second CMS_recipientInfo is chosen ciphertext. If the second
1679 recipientInfo decodes to PKCS #1 v1.5 form plaintext, the correct
1680 encryption key will be replaced by garbage, and the message cannot be
1681 decoded, but if the RSA decryption fails, the correct encryption key is
1682 used and the recipient will not notice the attack.
1683 As a work around for this potential attack the length of the decrypted
1684 key must be equal to the cipher default key length, in case the
1685 certificate is not given and all recipientInfo are tried out.
1686 The old behaviour can be re-enabled in the CMS code by setting the
1687 CMS_DEBUG_DECRYPT flag.
1691 * Early start up entropy quality from the DEVRANDOM seed source has been
1692 improved for older Linux systems. The RAND subsystem will wait for
1693 /dev/random to be producing output before seeding from /dev/urandom.
1694 The seeded state is stored for future library initialisations using
1695 a system global shared memory segment. The shared memory identifier
1696 can be configured by defining OPENSSL_RAND_SEED_DEVRANDOM_SHM_ID to
1697 the desired value. The default identifier is 114.
1701 * Revised BN_generate_prime_ex to not avoid factors 2..17863 in p-1
1702 when primes for RSA keys are computed.
1703 Since we previously always generated primes == 2 (mod 3) for RSA keys,
1704 the 2-prime and 3-prime RSA modules were easy to distinguish, since
1705 `N = p*q = 1 (mod 3)`, but `N = p*q*r = 2 (mod 3)`. Therefore, fingerprinting
1706 2-prime vs. 3-prime RSA keys was possible by computing N mod 3.
1707 This avoids possible fingerprinting of newly generated RSA modules.
1711 * Correct the extended master secret constant on EBCDIC systems. Without this
1712 fix TLS connections between an EBCDIC system and a non-EBCDIC system that
1713 negotiate EMS will fail. Unfortunately this also means that TLS connections
1714 between EBCDIC systems with this fix, and EBCDIC systems without this
1715 fix will fail if they negotiate EMS.
1719 * Changed the library initialisation so that the config file is now loaded
1720 by default. This was already the case for libssl. It now occurs for both
1721 libcrypto and libssl. Use the OPENSSL_INIT_NO_LOAD_CONFIG option to
1722 `OPENSSL_init_crypto()` to suppress automatic loading of a config file.
1726 * Introduced new error raising macros, `ERR_raise()` and `ERR_raise_data()`,
1727 where the former acts as a replacement for `ERR_put_error()`, and the
1728 latter replaces the combination `ERR_put_error()` + `ERR_add_error_data()`.
1729 `ERR_raise_data()` adds more flexibility by taking a format string and
1730 an arbitrary number of arguments following it, to be processed with
1735 * Introduced a new function, `OSSL_PROVIDER_available()`, which can be used
1736 to check if a named provider is loaded and available. When called, it
1737 will also activate all fallback providers if such are still present.
1741 * Enforce a minimum DH modulus size of 512 bits.
1745 * Changed DH parameters to generate the order q subgroup instead of 2q.
1746 Previously generated DH parameters are still accepted by DH_check
1747 but DH_generate_key works around that by clearing bit 0 of the
1748 private key for those. This avoids leaking bit 0 of the private key.
1752 * Significantly reduce secure memory usage by the randomness pools.
1756 * `{CRYPTO,OPENSSL}_mem_debug_{push,pop}` are now no-ops and have been
1761 * A new type, EVP_KEYEXCH, has been introduced to represent key exchange
1762 algorithms. An implementation of a key exchange algorithm can be obtained
1763 by using the function EVP_KEYEXCH_fetch(). An EVP_KEYEXCH algorithm can be
1764 used in a call to EVP_PKEY_derive_init_ex() which works in a similar way to
1765 the older EVP_PKEY_derive_init() function. See the man pages for the new
1766 functions for further details.
1770 * The EVP_PKEY_CTX_set_dh_pad() macro has now been converted to a function.
1774 * Removed the function names from error messages and deprecated the
1779 * Removed NextStep support and the macro OPENSSL_UNISTD
1783 * Removed DES_check_key. Also removed OPENSSL_IMPLEMENT_GLOBAL,
1784 OPENSSL_GLOBAL_REF, OPENSSL_DECLARE_GLOBAL.
1785 Also removed "export var as function" capability; we do not export
1786 variables, only functions.
1790 * RC5_32_set_key has been changed to return an int type, with 0 indicating
1791 an error and 1 indicating success. In previous versions of OpenSSL this
1792 was a void type. If a key was set longer than the maximum possible this
1797 * Support SM2 signing and verification schemes with X509 certificate.
1801 * Use SHA256 as the default digest for TS query in the `ts` app.
1805 * Change PBKDF2 to conform to SP800-132 instead of the older PKCS5 RFC2898.
1809 * Default cipher lists/suites are now available via a function, the
1810 #defines are deprecated.
1814 * Add target VC-WIN32-UWP, VC-WIN64A-UWP, VC-WIN32-ARM-UWP and
1815 VC-WIN64-ARM-UWP in Windows OneCore target for making building libraries
1816 for Windows Store apps easier. Also, the "no-uplink" option has been added.
1820 * Join the directories crypto/x509 and crypto/x509v3
1824 * Added command 'openssl kdf' that uses the EVP_KDF API.
1828 * Added command 'openssl mac' that uses the EVP_MAC API.
1832 * Added OPENSSL_info() to get diverse built-in OpenSSL data, such
1833 as default directories. Also added the command 'openssl info'
1834 for scripting purposes.
1838 * The functions AES_ige_encrypt() and AES_bi_ige_encrypt() have been
1843 * Add prediction resistance to the DRBG reseeding process.
1847 * Limit the number of blocks in a data unit for AES-XTS to 2^20 as
1848 mandated by IEEE Std 1619-2018.
1852 * Added newline escaping functionality to a filename when using openssl dgst.
1853 This output format is to replicate the output format found in the `*sum`
1854 checksum programs. This aims to preserve backward compatibility.
1856 *Matt Eaton, Richard Levitte, and Paul Dale*
1858 * Removed the heartbeat message in DTLS feature, as it has very
1859 little usage and doesn't seem to fulfill a valuable purpose.
1860 The configuration option is now deprecated.
1864 * Changed the output of 'openssl {digestname} < file' to display the
1865 digest name in its output.
1869 * Added a new generic trace API which provides support for enabling
1870 instrumentation through trace output.
1872 *Richard Levitte & Matthias St. Pierre*
1874 * Added build tests for C++. These are generated files that only do one
1875 thing, to include one public OpenSSL head file each. This tests that
1876 the public header files can be usefully included in a C++ application.
1878 This test isn't enabled by default. It can be enabled with the option
1879 'enable-buildtest-c++'.
1883 * Added KB KDF (EVP_KDF_KB) to EVP_KDF.
1887 * Added SSH KDF (EVP_KDF_SSHKDF) and KRB5 KDF (EVP_KDF_KRB5KDF) to EVP_KDF.
1891 * Added Single Step KDF (EVP_KDF_SS), X963 KDF, and X942 KDF to EVP_KDF.
1895 * Added KMAC to EVP_MAC.
1899 * Added property based algorithm implementation selection framework to
1904 * Added SCA hardening for modular field inversion in EC_GROUP through
1905 a new dedicated field_inv() pointer in EC_METHOD.
1906 This also addresses a leakage affecting conversions from projective
1907 to affine coordinates.
1909 *Billy Bob Brumley, Nicola Tuveri*
1911 * Added EVP_KDF, an EVP layer KDF API, to simplify adding KDF and PRF
1912 implementations. This includes an EVP_PKEY to EVP_KDF bridge for
1913 those algorithms that were already supported through the EVP_PKEY API
1914 (scrypt, TLS1 PRF and HKDF). The low-level KDF functions for PBKDF2
1915 and scrypt are now wrappers that call EVP_KDF.
1919 * Build devcrypto engine as a dynamic engine.
1921 *Eneas U de Queiroz*
1923 * Add keyed BLAKE2 to EVP_MAC.
1927 * Fix a bug in the computation of the endpoint-pair shared secret used
1928 by DTLS over SCTP. This breaks interoperability with older versions
1929 of OpenSSL like OpenSSL 1.1.0 and OpenSSL 1.0.2. There is a runtime
1930 switch SSL_MODE_DTLS_SCTP_LABEL_LENGTH_BUG (off by default) enabling
1931 interoperability with such broken implementations. However, enabling
1932 this switch breaks interoperability with correct implementations.
1934 * Fix a use after free bug in d2i_X509_PUBKEY when overwriting a
1935 re-used X509_PUBKEY object if the second PUBKEY is malformed.
1939 * Move strictness check from EVP_PKEY_asn1_new() to EVP_PKEY_asn1_add0().
1943 * Changed the license to the Apache License v2.0.
1947 * Switch to a new version scheme using three numbers MAJOR.MINOR.PATCH.
1949 - Major releases (indicated by incrementing the MAJOR release number)
1950 may introduce incompatible API/ABI changes.
1951 - Minor releases (indicated by incrementing the MINOR release number)
1952 may introduce new features but retain API/ABI compatibility.
1953 - Patch releases (indicated by incrementing the PATCH number)
1954 are intended for bug fixes and other improvements of existing
1955 features only (like improving performance or adding documentation)
1956 and retain API/ABI compatibility.
1960 * Add support for RFC5297 SIV mode (siv128), including AES-SIV.
1964 * Remove the 'dist' target and add a tarball building script. The
1965 'dist' target has fallen out of use, and it shouldn't be
1966 necessary to configure just to create a source distribution.
1970 * Recreate the OS390-Unix config target. It no longer relies on a
1971 special script like it did for OpenSSL pre-1.1.0.
1975 * Instead of having the source directories listed in Configure, add
1976 a 'build.info' keyword SUBDIRS to indicate what sub-directories to
1981 * Add GMAC to EVP_MAC.
1985 * Ported the HMAC, CMAC and SipHash EVP_PKEY_METHODs to EVP_MAC.
1989 * Added EVP_MAC, an EVP layer MAC API, to simplify adding MAC
1990 implementations. This includes a generic EVP_PKEY to EVP_MAC bridge,
1991 to facilitate the continued use of MACs through raw private keys in
1992 functionality such as `EVP_DigestSign*` and `EVP_DigestVerify*`.
1996 * Deprecate ECDH_KDF_X9_62().
2000 * Added EVP_PKEY_ECDH_KDF_X9_63 and ecdh_KDF_X9_63() as replacements for
2001 the EVP_PKEY_ECDH_KDF_X9_62 KDF type and ECDH_KDF_X9_62(). The old names
2002 are retained for backwards compatibility.
2006 * AES-XTS mode now enforces that its two keys are different to mitigate
2007 the attacked described in "Efficient Instantiations of Tweakable
2008 Blockciphers and Refinements to Modes OCB and PMAC" by Phillip Rogaway.
2009 Details of this attack can be obtained from:
2010 <http://web.cs.ucdavis.edu/%7Erogaway/papers/offsets.pdf>
2014 * Rename the object files, i.e. give them other names than in previous
2015 versions. Their names now include the name of the final product, as
2016 well as its type mnemonic (bin, lib, shlib).
2020 * Added new option for 'openssl list', '-objects', which will display the
2021 list of built in objects, i.e. OIDs with names.
2025 * Added the options `-crl_lastupdate` and `-crl_nextupdate` to `openssl ca`,
2026 allowing the `lastUpdate` and `nextUpdate` fields in the generated CRL to
2031 * Added support for Linux Kernel TLS data-path. The Linux Kernel data-path
2032 improves application performance by removing data copies and providing
2033 applications with zero-copy system calls such as sendfile and splice.
2037 * The SSL option SSL_OP_CLEANSE_PLAINTEXT is introduced.
2041 * `PKCS12_parse` now maintains the order of the parsed certificates
2042 when outputting them via `*ca` (rather than reversing it).
2046 * Deprecated pthread fork support methods.
2050 * Added support for FFDHE key exchange in TLS 1.3.
2054 * Added a new concept for OpenSSL plugability: providers. This
2055 functionality is designed to replace the ENGINE API and ENGINE
2056 implementations, and to be much more dynamic, allowing provider
2057 authors to introduce new algorithms among other things, as long as
2058 there's an API that supports the algorithm type.
2060 With this concept comes a new core API for interaction between
2061 libcrypto and provider implementations. Public libcrypto functions
2062 that want to use providers do so through this core API.
2064 The main documentation for this core API is found in
2065 doc/man7/provider.pod, doc/man7/provider-base.pod, and they in turn
2066 refer to other manuals describing the API specific for supported
2067 algorithm types (also called operations).
2074 ### Changes between 1.1.1m and 1.1.1n [xx XXX xxxx]
2076 ### Changes between 1.1.1l and 1.1.1m [14 Dec 2021]
2078 * Avoid loading of a dynamic engine twice.
2082 * Prioritise DANE TLSA issuer certs over peer certs
2086 * Fixed random API for MacOS prior to 10.12
2088 These MacOS versions don't support the CommonCrypto APIs
2092 ### Changes between 1.1.1k and 1.1.1l [24 Aug 2021]
2094 * Fixed an SM2 Decryption Buffer Overflow.
2096 In order to decrypt SM2 encrypted data an application is expected to
2097 call the API function EVP_PKEY_decrypt(). Typically an application will
2098 call this function twice. The first time, on entry, the "out" parameter
2099 can be NULL and, on exit, the "outlen" parameter is populated with the
2100 buffer size required to hold the decrypted plaintext. The application
2101 can then allocate a sufficiently sized buffer and call EVP_PKEY_decrypt()
2102 again, but this time passing a non-NULL value for the "out" parameter.
2104 A bug in the implementation of the SM2 decryption code means that the
2105 calculation of the buffer size required to hold the plaintext returned
2106 by the first call to EVP_PKEY_decrypt() can be smaller than the actual
2107 size required by the second call. This can lead to a buffer overflow
2108 when EVP_PKEY_decrypt() is called by the application a second time with
2109 a buffer that is too small.
2111 A malicious attacker who is able present SM2 content for decryption to
2112 an application could cause attacker chosen data to overflow the buffer
2113 by up to a maximum of 62 bytes altering the contents of other data held
2114 after the buffer, possibly changing application behaviour or causing
2115 the application to crash. The location of the buffer is application
2116 dependent but is typically heap allocated.
2121 * Fixed various read buffer overruns processing ASN.1 strings
2123 ASN.1 strings are represented internally within OpenSSL as an ASN1_STRING
2124 structure which contains a buffer holding the string data and a field
2125 holding the buffer length. This contrasts with normal C strings which
2126 are represented as a buffer for the string data which is terminated
2127 with a NUL (0) byte.
2129 Although not a strict requirement, ASN.1 strings that are parsed using
2130 OpenSSL's own "d2i" functions (and other similar parsing functions) as
2131 well as any string whose value has been set with the ASN1_STRING_set()
2132 function will additionally NUL terminate the byte array in the
2133 ASN1_STRING structure.
2135 However, it is possible for applications to directly construct valid
2136 ASN1_STRING structures which do not NUL terminate the byte array by
2137 directly setting the "data" and "length" fields in the ASN1_STRING
2138 array. This can also happen by using the ASN1_STRING_set0() function.
2140 Numerous OpenSSL functions that print ASN.1 data have been found to
2141 assume that the ASN1_STRING byte array will be NUL terminated, even
2142 though this is not guaranteed for strings that have been directly
2143 constructed. Where an application requests an ASN.1 structure to be
2144 printed, and where that ASN.1 structure contains ASN1_STRINGs that have
2145 been directly constructed by the application without NUL terminating
2146 the "data" field, then a read buffer overrun can occur.
2148 The same thing can also occur during name constraints processing
2149 of certificates (for example if a certificate has been directly
2150 constructed by the application instead of loading it via the OpenSSL
2151 parsing functions, and the certificate contains non NUL terminated
2152 ASN1_STRING structures). It can also occur in the X509_get1_email(),
2153 X509_REQ_get1_email() and X509_get1_ocsp() functions.
2155 If a malicious actor can cause an application to directly construct an
2156 ASN1_STRING and then process it through one of the affected OpenSSL
2157 functions then this issue could be hit. This might result in a crash
2158 (causing a Denial of Service attack). It could also result in the
2159 disclosure of private memory contents (such as private keys, or
2160 sensitive plaintext).
2165 ### Changes between 1.1.1j and 1.1.1k [25 Mar 2021]
2167 * Fixed a problem with verifying a certificate chain when using the
2168 X509_V_FLAG_X509_STRICT flag. This flag enables additional security checks of
2169 the certificates present in a certificate chain. It is not set by default.
2171 Starting from OpenSSL version 1.1.1h a check to disallow certificates in
2172 the chain that have explicitly encoded elliptic curve parameters was added
2173 as an additional strict check.
2175 An error in the implementation of this check meant that the result of a
2176 previous check to confirm that certificates in the chain are valid CA
2177 certificates was overwritten. This effectively bypasses the check
2178 that non-CA certificates must not be able to issue other certificates.
2180 If a "purpose" has been configured then there is a subsequent opportunity
2181 for checks that the certificate is a valid CA. All of the named "purpose"
2182 values implemented in libcrypto perform this check. Therefore, where
2183 a purpose is set the certificate chain will still be rejected even when the
2184 strict flag has been used. A purpose is set by default in libssl client and
2185 server certificate verification routines, but it can be overridden or
2186 removed by an application.
2188 In order to be affected, an application must explicitly set the
2189 X509_V_FLAG_X509_STRICT verification flag and either not set a purpose
2190 for the certificate verification or, in the case of TLS client or server
2191 applications, override the default purpose.
2196 * Fixed an issue where an OpenSSL TLS server may crash if sent a maliciously
2197 crafted renegotiation ClientHello message from a client. If a TLSv1.2
2198 renegotiation ClientHello omits the signature_algorithms extension (where it
2199 was present in the initial ClientHello), but includes a
2200 signature_algorithms_cert extension then a NULL pointer dereference will
2201 result, leading to a crash and a denial of service attack.
2203 A server is only vulnerable if it has TLSv1.2 and renegotiation enabled
2204 (which is the default configuration). OpenSSL TLS clients are not impacted by
2208 *Peter Kästle and Samuel Sapalski*
2210 ### Changes between 1.1.1i and 1.1.1j [16 Feb 2021]
2212 * Fixed the X509_issuer_and_serial_hash() function. It attempts to
2213 create a unique hash value based on the issuer and serial number data
2214 contained within an X509 certificate. However, it was failing to correctly
2215 handle any errors that may occur while parsing the issuer field (which might
2216 occur if the issuer field is maliciously constructed). This may subsequently
2217 result in a NULL pointer deref and a crash leading to a potential denial of
2223 * Fixed the RSA_padding_check_SSLv23() function and the RSA_SSLV23_PADDING
2224 padding mode to correctly check for rollback attacks. This is considered a
2225 bug in OpenSSL 1.1.1 because it does not support SSLv2. In 1.0.2 this is
2230 Fixed the EVP_CipherUpdate, EVP_EncryptUpdate and EVP_DecryptUpdate
2231 functions. Previously they could overflow the output length argument in some
2232 cases where the input length is close to the maximum permissible length for
2233 an integer on the platform. In such cases the return value from the function
2234 call would be 1 (indicating success), but the output length value would be
2235 negative. This could cause applications to behave incorrectly or crash.
2240 * Fixed SRP_Calc_client_key so that it runs in constant time. The previous
2241 implementation called BN_mod_exp without setting BN_FLG_CONSTTIME. This
2242 could be exploited in a side channel attack to recover the password. Since
2243 the attack is local host only this is outside of the current OpenSSL
2244 threat model and therefore no CVE is assigned.
2246 Thanks to Mohammed Sabt and Daniel De Almeida Braga for reporting this
2251 ### Changes between 1.1.1h and 1.1.1i [8 Dec 2020]
2253 * Fixed NULL pointer deref in the GENERAL_NAME_cmp function
2254 This function could crash if both GENERAL_NAMEs contain an EDIPARTYNAME.
2255 If an attacker can control both items being compared then this could lead
2256 to a possible denial of service attack. OpenSSL itself uses the
2257 GENERAL_NAME_cmp function for two purposes:
2258 1) Comparing CRL distribution point names between an available CRL and a
2259 CRL distribution point embedded in an X509 certificate
2260 2) When verifying that a timestamp response token signer matches the
2261 timestamp authority name (exposed via the API functions
2262 TS_RESP_verify_response and TS_RESP_verify_token)
2267 ### Changes between 1.1.1g and 1.1.1h [22 Sep 2020]
2269 * Certificates with explicit curve parameters are now disallowed in
2270 verification chains if the X509_V_FLAG_X509_STRICT flag is used.
2274 * The 'MinProtocol' and 'MaxProtocol' configuration commands now silently
2275 ignore TLS protocol version bounds when configuring DTLS-based contexts, and
2276 conversely, silently ignore DTLS protocol version bounds when configuring
2277 TLS-based contexts. The commands can be repeated to set bounds of both
2278 types. The same applies with the corresponding "min_protocol" and
2279 "max_protocol" command-line switches, in case some application uses both TLS
2282 SSL_CTX instances that are created for a fixed protocol version (e.g.
2283 TLSv1_server_method()) also silently ignore version bounds. Previously
2284 attempts to apply bounds to these protocol versions would result in an
2285 error. Now only the "version-flexible" SSL_CTX instances are subject to
2286 limits in configuration files in command-line options.
2290 * Handshake now fails if Extended Master Secret extension is dropped
2295 * The Oracle Developer Studio compiler will start reporting deprecated APIs
2297 ### Changes between 1.1.1f and 1.1.1g [21 Apr 2020]
2299 * Fixed segmentation fault in SSL_check_chain()
2300 Server or client applications that call the SSL_check_chain() function
2301 during or after a TLS 1.3 handshake may crash due to a NULL pointer
2302 dereference as a result of incorrect handling of the
2303 "signature_algorithms_cert" TLS extension. The crash occurs if an invalid
2304 or unrecognised signature algorithm is received from the peer. This could
2305 be exploited by a malicious peer in a Denial of Service attack.
2310 * Added AES consttime code for no-asm configurations
2311 an optional constant time support for AES was added
2312 when building openssl for no-asm.
2313 Enable with: ./config no-asm -DOPENSSL_AES_CONST_TIME
2314 Disable with: ./config no-asm -DOPENSSL_NO_AES_CONST_TIME
2315 At this time this feature is by default disabled.
2316 It will be enabled by default in 3.0.
2320 ### Changes between 1.1.1e and 1.1.1f [31 Mar 2020]
2322 * Revert the change of EOF detection while reading in libssl to avoid
2323 regressions in applications depending on the current way of reporting
2324 the EOF. As the existing method is not fully accurate the change to
2325 reporting the EOF via SSL_ERROR_SSL is kept on the current development
2326 branch and will be present in the 3.0 release.
2330 * Revised BN_generate_prime_ex to not avoid factors 3..17863 in p-1
2331 when primes for RSA keys are computed.
2332 Since we previously always generated primes == 2 (mod 3) for RSA keys,
2333 the 2-prime and 3-prime RSA modules were easy to distinguish, since
2334 N = p*q = 1 (mod 3), but N = p*q*r = 2 (mod 3). Therefore, fingerprinting
2335 2-prime vs. 3-prime RSA keys was possible by computing N mod 3.
2336 This avoids possible fingerprinting of newly generated RSA modules.
2340 ### Changes between 1.1.1d and 1.1.1e [17 Mar 2020]
2342 * Properly detect EOF while reading in libssl. Previously if we hit an EOF
2343 while reading in libssl then we would report an error back to the
2344 application (SSL_ERROR_SYSCALL) but errno would be 0. We now add
2345 an error to the stack (which means we instead return SSL_ERROR_SSL) and
2346 therefore give a hint as to what went wrong.
2350 * Check that ed25519 and ed448 are allowed by the security level. Previously
2351 signature algorithms not using an MD were not being checked that they were
2352 allowed by the security level.
2356 * Fixed SSL_get_servername() behaviour. The behaviour of SSL_get_servername()
2357 was not quite right. The behaviour was not consistent between resumption
2358 and normal handshakes, and also not quite consistent with historical
2359 behaviour. The behaviour in various scenarios has been clarified and
2360 it has been updated to make it match historical behaviour as closely as
2365 * *[VMS only]* The header files that the VMS compilers include automatically,
2366 `__DECC_INCLUDE_PROLOGUE.H` and `__DECC_INCLUDE_EPILOGUE.H`, use pragmas
2367 that the C++ compiler doesn't understand. This is a shortcoming in the
2368 compiler, but can be worked around with `__cplusplus` guards.
2370 C++ applications that use OpenSSL libraries must be compiled using the
2371 qualifier `/NAMES=(AS_IS,SHORTENED)` to be able to use all the OpenSSL
2372 functions. Otherwise, only functions with symbols of less than 31
2373 characters can be used, as the linker will not be able to successfully
2374 resolve symbols with longer names.
2378 * Added a new method to gather entropy on VMS, based on SYS$GET_ENTROPY.
2379 The presence of this system service is determined at run-time.
2383 * Print all values for a PKCS#12 attribute with 'openssl pkcs12', not just
2388 ### Changes between 1.1.1c and 1.1.1d [10 Sep 2019]
2390 * Fixed a fork protection issue. OpenSSL 1.1.1 introduced a rewritten random
2391 number generator (RNG). This was intended to include protection in the
2392 event of a fork() system call in order to ensure that the parent and child
2393 processes did not share the same RNG state. However, this protection was not
2394 being used in the default case.
2396 A partial mitigation for this issue is that the output from a high
2397 precision timer is mixed into the RNG state so the likelihood of a parent
2398 and child process sharing state is significantly reduced.
2400 If an application already calls OPENSSL_init_crypto() explicitly using
2401 OPENSSL_INIT_ATFORK then this problem does not occur at all.
2404 *Matthias St. Pierre*
2406 * For built-in EC curves, ensure an EC_GROUP built from the curve name is
2407 used even when parsing explicit parameters, when loading a encoded key
2408 or calling `EC_GROUP_new_from_ecpkparameters()`/
2409 `EC_GROUP_new_from_ecparameters()`.
2410 This prevents bypass of security hardening and performance gains,
2411 especially for curves with specialized EC_METHODs.
2412 By default, if a key encoded with explicit parameters is loaded and later
2413 encoded, the output is still encoded with explicit parameters, even if
2414 internally a "named" EC_GROUP is used for computation.
2418 * Compute ECC cofactors if not provided during EC_GROUP construction. Before
2419 this change, EC_GROUP_set_generator would accept order and/or cofactor as
2420 NULL. After this change, only the cofactor parameter can be NULL. It also
2421 does some minimal sanity checks on the passed order.
2426 * Fixed a padding oracle in PKCS7_dataDecode and CMS_decrypt_set1_pkey.
2427 An attack is simple, if the first CMS_recipientInfo is valid but the
2428 second CMS_recipientInfo is chosen ciphertext. If the second
2429 recipientInfo decodes to PKCS #1 v1.5 form plaintext, the correct
2430 encryption key will be replaced by garbage, and the message cannot be
2431 decoded, but if the RSA decryption fails, the correct encryption key is
2432 used and the recipient will not notice the attack.
2433 As a work around for this potential attack the length of the decrypted
2434 key must be equal to the cipher default key length, in case the
2435 certificate is not given and all recipientInfo are tried out.
2436 The old behaviour can be re-enabled in the CMS code by setting the
2437 CMS_DEBUG_DECRYPT flag.
2442 * Early start up entropy quality from the DEVRANDOM seed source has been
2443 improved for older Linux systems. The RAND subsystem will wait for
2444 /dev/random to be producing output before seeding from /dev/urandom.
2445 The seeded state is stored for future library initialisations using
2446 a system global shared memory segment. The shared memory identifier
2447 can be configured by defining OPENSSL_RAND_SEED_DEVRANDOM_SHM_ID to
2448 the desired value. The default identifier is 114.
2452 * Correct the extended master secret constant on EBCDIC systems. Without this
2453 fix TLS connections between an EBCDIC system and a non-EBCDIC system that
2454 negotiate EMS will fail. Unfortunately this also means that TLS connections
2455 between EBCDIC systems with this fix, and EBCDIC systems without this
2456 fix will fail if they negotiate EMS.
2460 * Use Windows installation paths in the mingw builds
2462 Mingw isn't a POSIX environment per se, which means that Windows
2463 paths should be used for installation.
2468 * Changed DH_check to accept parameters with order q and 2q subgroups.
2469 With order 2q subgroups the bit 0 of the private key is not secret
2470 but DH_generate_key works around that by clearing bit 0 of the
2471 private key for those. This avoids leaking bit 0 of the private key.
2475 * Significantly reduce secure memory usage by the randomness pools.
2479 * Revert the DEVRANDOM_WAIT feature for Linux systems
2481 The DEVRANDOM_WAIT feature added a select() call to wait for the
2482 /dev/random device to become readable before reading from the
2483 /dev/urandom device.
2485 It turned out that this change had negative side effects on
2486 performance which were not acceptable. After some discussion it
2487 was decided to revert this feature and leave it up to the OS
2488 resp. the platform maintainer to ensure a proper initialization
2489 during early boot time.
2491 *Matthias St. Pierre*
2493 ### Changes between 1.1.1b and 1.1.1c [28 May 2019]
2495 * Add build tests for C++. These are generated files that only do one
2496 thing, to include one public OpenSSL head file each. This tests that
2497 the public header files can be usefully included in a C++ application.
2499 This test isn't enabled by default. It can be enabled with the option
2500 'enable-buildtest-c++'.
2504 * Enable SHA3 pre-hashing for ECDSA and DSA.
2508 * Change the default RSA, DSA and DH size to 2048 bit instead of 1024.
2509 This changes the size when using the `genpkey` command when no size is given.
2510 It fixes an omission in earlier changes that changed all RSA, DSA and DH
2511 generation commands to use 2048 bits by default.
2515 * Reorganize the manual pages to consistently have RETURN VALUES,
2516 EXAMPLES, SEE ALSO and HISTORY come in that order, and adjust
2517 util/fix-doc-nits accordingly.
2519 *Paul Yang, Joshua Lock*
2521 * Add the missing accessor EVP_PKEY_get0_engine()
2525 * Have commands like `s_client` and `s_server` output the signature scheme
2526 along with other cipher suite parameters when debugging.
2530 * Make OPENSSL_config() error agnostic again.
2534 * Do the error handling in RSA decryption constant time.
2538 * Prevent over long nonces in ChaCha20-Poly1305.
2540 ChaCha20-Poly1305 is an AEAD cipher, and requires a unique nonce input
2541 for every encryption operation. RFC 7539 specifies that the nonce value
2542 (IV) should be 96 bits (12 bytes). OpenSSL allows a variable nonce length
2543 and front pads the nonce with 0 bytes if it is less than 12
2544 bytes. However it also incorrectly allows a nonce to be set of up to 16
2545 bytes. In this case only the last 12 bytes are significant and any
2546 additional leading bytes are ignored.
2548 It is a requirement of using this cipher that nonce values are
2549 unique. Messages encrypted using a reused nonce value are susceptible to
2550 serious confidentiality and integrity attacks. If an application changes
2551 the default nonce length to be longer than 12 bytes and then makes a
2552 change to the leading bytes of the nonce expecting the new value to be a
2553 new unique nonce then such an application could inadvertently encrypt
2554 messages with a reused nonce.
2556 Additionally the ignored bytes in a long nonce are not covered by the
2557 integrity guarantee of this cipher. Any application that relies on the
2558 integrity of these ignored leading bytes of a long nonce may be further
2559 affected. Any OpenSSL internal use of this cipher, including in SSL/TLS,
2560 is safe because no such use sets such a long nonce value. However user
2561 applications that use this cipher directly and set a non-default nonce
2562 length to be longer than 12 bytes may be vulnerable.
2564 This issue was reported to OpenSSL on 16th of March 2019 by Joran Dirk
2570 * Add DEVRANDOM_WAIT feature for Linux systems
2572 On older Linux systems where the getrandom() system call is not available,
2573 OpenSSL normally uses the /dev/urandom device for seeding its CSPRNG.
2574 Contrary to getrandom(), the /dev/urandom device will not block during
2575 early boot when the kernel CSPRNG has not been seeded yet.
2577 To mitigate this known weakness, use select() to wait for /dev/random to
2578 become readable before reading from /dev/urandom.
2580 * Ensure that SM2 only uses SM3 as digest algorithm
2584 ### Changes between 1.1.1a and 1.1.1b [26 Feb 2019]
2586 * Change the info callback signals for the start and end of a post-handshake
2587 message exchange in TLSv1.3. In 1.1.1/1.1.1a we used SSL_CB_HANDSHAKE_START
2588 and SSL_CB_HANDSHAKE_DONE. Experience has shown that many applications get
2589 confused by this and assume that a TLSv1.2 renegotiation has started. This
2590 can break KeyUpdate handling. Instead we no longer signal the start and end
2591 of a post handshake message exchange (although the messages themselves are
2592 still signalled). This could break some applications that were expecting
2593 the old signals. However without this KeyUpdate is not usable for many
2598 ### Changes between 1.1.1 and 1.1.1a [20 Nov 2018]
2600 * Timing vulnerability in DSA signature generation
2602 The OpenSSL DSA signature algorithm has been shown to be vulnerable to a
2603 timing side channel attack. An attacker could use variations in the signing
2604 algorithm to recover the private key.
2606 This issue was reported to OpenSSL on 16th October 2018 by Samuel Weiser.
2611 * Timing vulnerability in ECDSA signature generation
2613 The OpenSSL ECDSA signature algorithm has been shown to be vulnerable to a
2614 timing side channel attack. An attacker could use variations in the signing
2615 algorithm to recover the private key.
2617 This issue was reported to OpenSSL on 25th October 2018 by Samuel Weiser.
2622 * Fixed the issue that RAND_add()/RAND_seed() silently discards random input
2623 if its length exceeds 4096 bytes. The limit has been raised to a buffer size
2624 of two gigabytes and the error handling improved.
2626 This issue was reported to OpenSSL by Dr. Falko Strenzke. It has been
2627 categorized as a normal bug, not a security issue, because the DRBG reseeds
2628 automatically and is fully functional even without additional randomness
2629 provided by the application.
2631 ### Changes between 1.1.0i and 1.1.1 [11 Sep 2018]
2633 * Add a new ClientHello callback. Provides a callback interface that gives
2634 the application the ability to adjust the nascent SSL object at the
2635 earliest stage of ClientHello processing, immediately after extensions have
2636 been collected but before they have been processed. In particular, this
2637 callback can adjust the supported TLS versions in response to the contents
2642 * Add SM2 base algorithm support.
2646 * s390x assembly pack: add (improved) hardware-support for the following
2647 cryptographic primitives: sha3, shake, aes-gcm, aes-ccm, aes-ctr, aes-ofb,
2648 aes-cfb/cfb8, aes-ecb.
2652 * Make EVP_PKEY_asn1_new() a bit stricter about its input. A NULL pem_str
2653 parameter is no longer accepted, as it leads to a corrupt table. NULL
2654 pem_str is reserved for alias entries only.
2658 * Use the new ec_scalar_mul_ladder scaffold to implement a specialized ladder
2659 step for prime curves. The new implementation is based on formulae from
2660 differential addition-and-doubling in homogeneous projective coordinates
2661 from Izu-Takagi "A fast parallel elliptic curve multiplication resistant
2662 against side channel attacks" and Brier-Joye "Weierstrass Elliptic Curves
2663 and Side-Channel Attacks" Eq. (8) for y-coordinate recovery, modified
2664 to work in projective coordinates.
2666 *Billy Bob Brumley, Nicola Tuveri*
2668 * Change generating and checking of primes so that the error rate of not
2669 being prime depends on the intended use based on the size of the input.
2670 For larger primes this will result in more rounds of Miller-Rabin.
2671 The maximal error rate for primes with more than 1080 bits is lowered
2674 *Kurt Roeckx, Annie Yousar*
2676 * Increase the number of Miller-Rabin rounds for DSA key generating to 64.
2680 * The 'tsget' script is renamed to 'tsget.pl', to avoid confusion when
2681 moving between systems, and to avoid confusion when a Windows build is
2682 done with mingw vs with MSVC. For POSIX installs, there's still a
2683 symlink or copy named 'tsget' to avoid that confusion as well.
2687 * Revert blinding in ECDSA sign and instead make problematic addition
2688 length-invariant. Switch even to fixed-length Montgomery multiplication.
2692 * Use the new ec_scalar_mul_ladder scaffold to implement a specialized ladder
2693 step for binary curves. The new implementation is based on formulae from
2694 differential addition-and-doubling in mixed Lopez-Dahab projective
2695 coordinates, modified to independently blind the operands.
2697 *Billy Bob Brumley, Sohaib ul Hassan, Nicola Tuveri*
2699 * Add a scaffold to optionally enhance the Montgomery ladder implementation
2700 for `ec_scalar_mul_ladder` (formerly `ec_mul_consttime`) allowing
2701 EC_METHODs to implement their own specialized "ladder step", to take
2702 advantage of more favorable coordinate systems or more efficient
2703 differential addition-and-doubling algorithms.
2705 *Billy Bob Brumley, Sohaib ul Hassan, Nicola Tuveri*
2707 * Modified the random device based seed sources to keep the relevant
2708 file descriptors open rather than reopening them on each access.
2709 This allows such sources to operate in a chroot() jail without
2710 the associated device nodes being available. This behaviour can be
2711 controlled using RAND_keep_random_devices_open().
2715 * Numerous side-channel attack mitigations have been applied. This may have
2716 performance impacts for some algorithms for the benefit of improved
2717 security. Specific changes are noted in this change log by their respective
2722 * AIX shared library support overhaul. Switch to AIX "natural" way of
2723 handling shared libraries, which means collecting shared objects of
2724 different versions and bitnesses in one common archive. This allows to
2725 mitigate conflict between 1.0 and 1.1 side-by-side installations. It
2726 doesn't affect the way 3rd party applications are linked, only how
2727 multi-version installation is managed.
2731 * Make ec_group_do_inverse_ord() more robust and available to other
2732 EC cryptosystems, so that irrespective of BN_FLG_CONSTTIME, SCA
2733 mitigations are applied to the fallback BN_mod_inverse().
2734 When using this function rather than BN_mod_inverse() directly, new
2735 EC cryptosystem implementations are then safer-by-default.
2739 * Add coordinate blinding for EC_POINT and implement projective
2740 coordinate blinding for generic prime curves as a countermeasure to
2741 chosen point SCA attacks.
2743 *Sohaib ul Hassan, Nicola Tuveri, Billy Bob Brumley*
2745 * Add blinding to ECDSA and DSA signatures to protect against side channel
2746 attacks discovered by Keegan Ryan (NCC Group).
2750 * Enforce checking in the `pkeyutl` command to ensure that the input
2751 length does not exceed the maximum supported digest length when performing
2752 a sign, verify or verifyrecover operation.
2756 * SSL_MODE_AUTO_RETRY is enabled by default. Applications that use blocking
2757 I/O in combination with something like select() or poll() will hang. This
2758 can be turned off again using SSL_CTX_clear_mode().
2759 Many applications do not properly handle non-application data records, and
2760 TLS 1.3 sends more of such records. Setting SSL_MODE_AUTO_RETRY works
2761 around the problems in those applications, but can also break some.
2762 It's recommended to read the manpages about SSL_read(), SSL_write(),
2763 SSL_get_error(), SSL_shutdown(), SSL_CTX_set_mode() and
2764 SSL_CTX_set_read_ahead() again.
2768 * When unlocking a pass phrase protected PEM file or PKCS#8 container, we
2769 now allow empty (zero character) pass phrases.
2773 * Apply blinding to binary field modular inversion and remove patent
2774 pending (OPENSSL_SUN_GF2M_DIV) BN_GF2m_mod_div implementation.
2778 * Deprecate ec2_mult.c and unify scalar multiplication code paths for
2779 binary and prime elliptic curves.
2783 * Remove ECDSA nonce padding: EC_POINT_mul is now responsible for
2784 constant time fixed point multiplication.
2788 * Revise elliptic curve scalar multiplication with timing attack
2789 defenses: ec_wNAF_mul redirects to a constant time implementation
2790 when computing fixed point and variable point multiplication (which
2791 in OpenSSL are mostly used with secret scalars in keygen, sign,
2792 ECDH derive operations).
2793 *Billy Bob Brumley, Nicola Tuveri, Cesar Pereida García,
2796 * Updated CONTRIBUTING
2800 * Updated DRBG / RAND to request nonce and additional low entropy
2801 randomness from the system.
2803 *Matthias St. Pierre*
2805 * Updated 'openssl rehash' to use OpenSSL consistent default.
2809 * Moved the load of the ssl_conf module to libcrypto, which helps
2810 loading engines that libssl uses before libssl is initialised.
2814 * Added EVP_PKEY_sign() and EVP_PKEY_verify() for EdDSA
2818 * Fixed X509_NAME_ENTRY_set to get multi-valued RDNs right in all cases.
2820 *Ingo Schwarze, Rich Salz*
2822 * Added output of accepting IP address and port for 'openssl s_server'
2826 * Added a new API for TLSv1.3 ciphersuites:
2827 SSL_CTX_set_ciphersuites()
2828 SSL_set_ciphersuites()
2832 * Memory allocation failures consistently add an error to the error
2837 * Don't use OPENSSL_ENGINES and OPENSSL_CONF environment values
2838 in libcrypto when run as setuid/setgid.
2842 * Load any config file by default when libssl is used.
2846 * Added new public header file <openssl/rand_drbg.h> and documentation
2847 for the RAND_DRBG API. See manual page RAND_DRBG(7) for an overview.
2849 *Matthias St. Pierre*
2851 * QNX support removed (cannot find contributors to get their approval
2852 for the license change).
2856 * TLSv1.3 replay protection for early data has been implemented. See the
2857 SSL_read_early_data() man page for further details.
2861 * Separated TLSv1.3 ciphersuite configuration out from TLSv1.2 ciphersuite
2862 configuration. TLSv1.3 ciphersuites are not compatible with TLSv1.2 and
2863 below. Similarly TLSv1.2 ciphersuites are not compatible with TLSv1.3.
2864 In order to avoid issues where legacy TLSv1.2 ciphersuite configuration
2865 would otherwise inadvertently disable all TLSv1.3 ciphersuites the
2866 configuration has been separated out. See the ciphers man page or the
2867 SSL_CTX_set_ciphersuites() man page for more information.
2871 * On POSIX (BSD, Linux, ...) systems the ocsp(1) command running
2872 in responder mode now supports the new "-multi" option, which
2873 spawns the specified number of child processes to handle OCSP
2874 requests. The "-timeout" option now also limits the OCSP
2875 responder's patience to wait to receive the full client request
2876 on a newly accepted connection. Child processes are respawned
2877 as needed, and the CA index file is automatically reloaded
2878 when changed. This makes it possible to run the "ocsp" responder
2879 as a long-running service, making the OpenSSL CA somewhat more
2880 feature-complete. In this mode, most diagnostic messages logged
2881 after entering the event loop are logged via syslog(3) rather than
2886 * Added support for X448 and Ed448. Heavily based on original work by
2891 * Extend OSSL_STORE with capabilities to search and to narrow the set of
2892 objects loaded. This adds the functions OSSL_STORE_expect() and
2893 OSSL_STORE_find() as well as needed tools to construct searches and
2894 get the search data out of them.
2898 * Support for TLSv1.3 added. Note that users upgrading from an earlier
2899 version of OpenSSL should review their configuration settings to ensure
2900 that they are still appropriate for TLSv1.3. For further information see:
2901 <https://wiki.openssl.org/index.php/TLS1.3>
2905 * Grand redesign of the OpenSSL random generator
2907 The default RAND method now utilizes an AES-CTR DRBG according to
2908 NIST standard SP 800-90Ar1. The new random generator is essentially
2909 a port of the default random generator from the OpenSSL FIPS 2.0
2910 object module. It is a hybrid deterministic random bit generator
2911 using an AES-CTR bit stream and which seeds and reseeds itself
2912 automatically using trusted system entropy sources.
2914 Some of its new features are:
2915 - Support for multiple DRBG instances with seed chaining.
2916 - The default RAND method makes use of a DRBG.
2917 - There is a public and private DRBG instance.
2918 - The DRBG instances are fork-safe.
2919 - Keep all global DRBG instances on the secure heap if it is enabled.
2920 - The public and private DRBG instance are per thread for lock free
2923 *Paul Dale, Benjamin Kaduk, Kurt Roeckx, Rich Salz, Matthias St. Pierre*
2925 * Changed Configure so it only says what it does and doesn't dump
2926 so much data. Instead, ./configdata.pm should be used as a script
2927 to display all sorts of configuration data.
2931 * Added processing of "make variables" to Configure.
2935 * Added SHA512/224 and SHA512/256 algorithm support.
2939 * The last traces of Netware support, first removed in 1.1.0, have
2944 * Get rid of Makefile.shared, and in the process, make the processing
2945 of certain files (rc.obj, or the .def/.map/.opt files produced from
2946 the ordinal files) more visible and hopefully easier to trace and
2947 debug (or make silent).
2951 * Make it possible to have environment variable assignments as
2952 arguments to config / Configure.
2956 * Add multi-prime RSA (RFC 8017) support.
2960 * Add SM3 implemented according to GB/T 32905-2016
2961 *Jack Lloyd <jack.lloyd@ribose.com>,*
2962 *Ronald Tse <ronald.tse@ribose.com>,*
2963 *Erick Borsboom <erick.borsboom@ribose.com>*
2965 * Add 'Maximum Fragment Length' TLS extension negotiation and support
2966 as documented in RFC6066.
2967 Based on a patch from Tomasz Moń
2969 *Filipe Raimundo da Silva*
2971 * Add SM4 implemented according to GB/T 32907-2016.
2972 *Jack Lloyd <jack.lloyd@ribose.com>,*
2973 *Ronald Tse <ronald.tse@ribose.com>,*
2974 *Erick Borsboom <erick.borsboom@ribose.com>*
2976 * Reimplement -newreq-nodes and ERR_error_string_n; the
2977 original author does not agree with the license change.
2981 * Add ARIA AEAD TLS support.
2985 * Some macro definitions to support VS6 have been removed. Visual
2986 Studio 6 has not worked since 1.1.0
2990 * Add ERR_clear_last_mark(), to allow callers to clear the last mark
2991 without clearing the errors.
2995 * Add "atfork" functions. If building on a system that without
2996 pthreads, see doc/man3/OPENSSL_fork_prepare.pod for application
2997 requirements. The RAND facility now uses/requires this.
3005 * The UI API becomes a permanent and integral part of libcrypto, i.e.
3006 not possible to disable entirely. However, it's still possible to
3007 disable the console reading UI method, UI_OpenSSL() (use UI_null()
3010 To disable, configure with 'no-ui-console'. 'no-ui' is still
3011 possible to use as an alias. Check at compile time with the
3012 macro OPENSSL_NO_UI_CONSOLE. The macro OPENSSL_NO_UI is still
3013 possible to check and is an alias for OPENSSL_NO_UI_CONSOLE.
3017 * Add a STORE module, which implements a uniform and URI based reader of
3018 stores that can contain keys, certificates, CRLs and numerous other
3019 objects. The main API is loosely based on a few stdio functions,
3020 and includes OSSL_STORE_open, OSSL_STORE_load, OSSL_STORE_eof,
3021 OSSL_STORE_error and OSSL_STORE_close.
3022 The implementation uses backends called "loaders" to implement arbitrary
3023 URI schemes. There is one built in "loader" for the 'file' scheme.
3027 * Add devcrypto engine. This has been implemented against cryptodev-linux,
3028 then adjusted to work on FreeBSD 8.4 as well.
3029 Enable by configuring with 'enable-devcryptoeng'. This is done by default
3030 on BSD implementations, as cryptodev.h is assumed to exist on all of them.
3034 * Module names can prefixed with OSSL_ or OPENSSL_. This affects
3035 util/mkerr.pl, which is adapted to allow those prefixes, leading to
3036 error code calls like this:
3038 OSSL_FOOerr(OSSL_FOO_F_SOMETHING, OSSL_FOO_R_WHATEVER);
3040 With this change, we claim the namespaces OSSL and OPENSSL in a manner
3041 that can be encoded in C. For the foreseeable future, this will only
3044 *Richard Levitte and Tim Hudson*
3046 * Removed BSD cryptodev engine.
3050 * Add a build target 'build_all_generated', to build all generated files
3051 and only that. This can be used to prepare everything that requires
3052 things like perl for a system that lacks perl and then move everything
3053 to that system and do the rest of the build there.
3057 * In the UI interface, make it possible to duplicate the user data. This
3058 can be used by engines that need to retain the data for a longer time
3059 than just the call where this user data is passed.
3063 * Ignore the '-named_curve auto' value for compatibility of applications
3066 *Tomáš Mráz <tmraz@fedoraproject.org>*
3068 * Fragmented SSL/TLS alerts are no longer accepted. An alert message is 2
3069 bytes long. In theory it is permissible in SSLv3 - TLSv1.2 to fragment such
3070 alerts across multiple records (some of which could be empty). In practice
3071 it make no sense to send an empty alert record, or to fragment one. TLSv1.3
3072 prohibits this altogether and other libraries (BoringSSL, NSS) do not
3073 support this at all. Supporting it adds significant complexity to the
3074 record layer, and its removal is unlikely to cause interoperability
3079 * Add the ASN.1 types INT32, UINT32, INT64, UINT64 and variants prefixed
3080 with Z. These are meant to replace LONG and ZLONG and to be size safe.
3081 The use of LONG and ZLONG is discouraged and scheduled for deprecation
3086 * Add the 'z' and 'j' modifiers to BIO_printf() et al formatting string,
3087 'z' is to be used for [s]size_t, and 'j' - with [u]int64_t.
3089 *Richard Levitte, Andy Polyakov*
3091 * Add EC_KEY_get0_engine(), which does for EC_KEY what RSA_get0_engine()
3096 * Have 'config' recognise 64-bit mingw and choose 'mingw64' as the target
3097 platform rather than 'mingw'.
3101 * The functions X509_STORE_add_cert and X509_STORE_add_crl return
3102 success if they are asked to add an object which already exists
3103 in the store. This change cascades to other functions which load
3104 certificates and CRLs.
3108 * x86_64 assembly pack: annotate code with DWARF CFI directives to
3109 facilitate stack unwinding even from assembly subroutines.
3113 * Remove VAX C specific definitions of OPENSSL_EXPORT, OPENSSL_EXTERN.
3114 Also remove OPENSSL_GLOBAL entirely, as it became a no-op.
3118 * Remove the VMS-specific reimplementation of gmtime from crypto/o_times.c.
3119 VMS C's RTL has a fully up to date gmtime() and gmtime_r() since V7.1,
3120 which is the minimum version we support.
3124 * Certificate time validation (X509_cmp_time) enforces stricter
3125 compliance with RFC 5280. Fractional seconds and timezone offsets
3126 are no longer allowed.
3130 * Add support for ARIA
3134 * s_client will now send the Server Name Indication (SNI) extension by
3135 default unless the new "-noservername" option is used. The server name is
3136 based on the host provided to the "-connect" option unless overridden by
3137 using "-servername".
3141 * Add support for SipHash
3145 * OpenSSL now fails if it receives an unrecognised record type in TLS1.0
3146 or TLS1.1. Previously this only happened in SSLv3 and TLS1.2. This is to
3147 prevent issues where no progress is being made and the peer continually
3148 sends unrecognised record types, using up resources processing them.
3152 * 'openssl passwd' can now produce SHA256 and SHA512 based output,
3153 using the algorithm defined in
3154 <https://www.akkadia.org/drepper/SHA-crypt.txt>
3158 * Heartbeat support has been removed; the ABI is changed for now.
3160 *Richard Levitte, Rich Salz*
3162 * Support for SSL_OP_NO_ENCRYPT_THEN_MAC in SSL_CONF_cmd.
3166 * The RSA "null" method, which was partially supported to avoid patent
3167 issues, has been replaced to always returns NULL.
3174 ### Changes between 1.1.0k and 1.1.0l [10 Sep 2019]
3176 * For built-in EC curves, ensure an EC_GROUP built from the curve name is
3177 used even when parsing explicit parameters, when loading a encoded key
3178 or calling `EC_GROUP_new_from_ecpkparameters()`/
3179 `EC_GROUP_new_from_ecparameters()`.
3180 This prevents bypass of security hardening and performance gains,
3181 especially for curves with specialized EC_METHODs.
3182 By default, if a key encoded with explicit parameters is loaded and later
3183 encoded, the output is still encoded with explicit parameters, even if
3184 internally a "named" EC_GROUP is used for computation.
3188 * Compute ECC cofactors if not provided during EC_GROUP construction. Before
3189 this change, EC_GROUP_set_generator would accept order and/or cofactor as
3190 NULL. After this change, only the cofactor parameter can be NULL. It also
3191 does some minimal sanity checks on the passed order.
3196 * Fixed a padding oracle in PKCS7_dataDecode and CMS_decrypt_set1_pkey.
3197 An attack is simple, if the first CMS_recipientInfo is valid but the
3198 second CMS_recipientInfo is chosen ciphertext. If the second
3199 recipientInfo decodes to PKCS #1 v1.5 form plaintext, the correct
3200 encryption key will be replaced by garbage, and the message cannot be
3201 decoded, but if the RSA decryption fails, the correct encryption key is
3202 used and the recipient will not notice the attack.
3203 As a work around for this potential attack the length of the decrypted
3204 key must be equal to the cipher default key length, in case the
3205 certificate is not given and all recipientInfo are tried out.
3206 The old behaviour can be re-enabled in the CMS code by setting the
3207 CMS_DEBUG_DECRYPT flag.
3212 * Use Windows installation paths in the mingw builds
3214 Mingw isn't a POSIX environment per se, which means that Windows
3215 paths should be used for installation.
3220 ### Changes between 1.1.0j and 1.1.0k [28 May 2019]
3222 * Change the default RSA, DSA and DH size to 2048 bit instead of 1024.
3223 This changes the size when using the `genpkey` command when no size is given.
3224 It fixes an omission in earlier changes that changed all RSA, DSA and DH
3225 generation commands to use 2048 bits by default.
3229 * Prevent over long nonces in ChaCha20-Poly1305.
3231 ChaCha20-Poly1305 is an AEAD cipher, and requires a unique nonce input
3232 for every encryption operation. RFC 7539 specifies that the nonce value
3233 (IV) should be 96 bits (12 bytes). OpenSSL allows a variable nonce length
3234 and front pads the nonce with 0 bytes if it is less than 12
3235 bytes. However it also incorrectly allows a nonce to be set of up to 16
3236 bytes. In this case only the last 12 bytes are significant and any
3237 additional leading bytes are ignored.
3239 It is a requirement of using this cipher that nonce values are
3240 unique. Messages encrypted using a reused nonce value are susceptible to
3241 serious confidentiality and integrity attacks. If an application changes
3242 the default nonce length to be longer than 12 bytes and then makes a
3243 change to the leading bytes of the nonce expecting the new value to be a
3244 new unique nonce then such an application could inadvertently encrypt
3245 messages with a reused nonce.
3247 Additionally the ignored bytes in a long nonce are not covered by the
3248 integrity guarantee of this cipher. Any application that relies on the
3249 integrity of these ignored leading bytes of a long nonce may be further
3250 affected. Any OpenSSL internal use of this cipher, including in SSL/TLS,
3251 is safe because no such use sets such a long nonce value. However user
3252 applications that use this cipher directly and set a non-default nonce
3253 length to be longer than 12 bytes may be vulnerable.
3255 This issue was reported to OpenSSL on 16th of March 2019 by Joran Dirk
3261 * Added SCA hardening for modular field inversion in EC_GROUP through
3262 a new dedicated field_inv() pointer in EC_METHOD.
3263 This also addresses a leakage affecting conversions from projective
3264 to affine coordinates.
3266 *Billy Bob Brumley, Nicola Tuveri*
3268 * Fix a use after free bug in d2i_X509_PUBKEY when overwriting a
3269 re-used X509_PUBKEY object if the second PUBKEY is malformed.
3273 * Move strictness check from EVP_PKEY_asn1_new() to EVP_PKEY_asn1_add0().
3277 * Remove the 'dist' target and add a tarball building script. The
3278 'dist' target has fallen out of use, and it shouldn't be
3279 necessary to configure just to create a source distribution.
3283 ### Changes between 1.1.0i and 1.1.0j [20 Nov 2018]
3285 * Timing vulnerability in DSA signature generation
3287 The OpenSSL DSA signature algorithm has been shown to be vulnerable to a
3288 timing side channel attack. An attacker could use variations in the signing
3289 algorithm to recover the private key.
3291 This issue was reported to OpenSSL on 16th October 2018 by Samuel Weiser.
3296 * Timing vulnerability in ECDSA signature generation
3298 The OpenSSL ECDSA signature algorithm has been shown to be vulnerable to a
3299 timing side channel attack. An attacker could use variations in the signing
3300 algorithm to recover the private key.
3302 This issue was reported to OpenSSL on 25th October 2018 by Samuel Weiser.
3307 * Add coordinate blinding for EC_POINT and implement projective
3308 coordinate blinding for generic prime curves as a countermeasure to
3309 chosen point SCA attacks.
3311 *Sohaib ul Hassan, Nicola Tuveri, Billy Bob Brumley*
3313 ### Changes between 1.1.0h and 1.1.0i [14 Aug 2018]
3315 * Client DoS due to large DH parameter
3317 During key agreement in a TLS handshake using a DH(E) based ciphersuite a
3318 malicious server can send a very large prime value to the client. This will
3319 cause the client to spend an unreasonably long period of time generating a
3320 key for this prime resulting in a hang until the client has finished. This
3321 could be exploited in a Denial Of Service attack.
3323 This issue was reported to OpenSSL on 5th June 2018 by Guido Vranken
3328 * Cache timing vulnerability in RSA Key Generation
3330 The OpenSSL RSA Key generation algorithm has been shown to be vulnerable to
3331 a cache timing side channel attack. An attacker with sufficient access to
3332 mount cache timing attacks during the RSA key generation process could
3333 recover the private key.
3335 This issue was reported to OpenSSL on 4th April 2018 by Alejandro Cabrera
3336 Aldaya, Billy Brumley, Cesar Pereida Garcia and Luis Manuel Alvarez Tapia.
3341 * Make EVP_PKEY_asn1_new() a bit stricter about its input. A NULL pem_str
3342 parameter is no longer accepted, as it leads to a corrupt table. NULL
3343 pem_str is reserved for alias entries only.
3347 * Revert blinding in ECDSA sign and instead make problematic addition
3348 length-invariant. Switch even to fixed-length Montgomery multiplication.
3352 * Change generating and checking of primes so that the error rate of not
3353 being prime depends on the intended use based on the size of the input.
3354 For larger primes this will result in more rounds of Miller-Rabin.
3355 The maximal error rate for primes with more than 1080 bits is lowered
3358 *Kurt Roeckx, Annie Yousar*
3360 * Increase the number of Miller-Rabin rounds for DSA key generating to 64.
3364 * Add blinding to ECDSA and DSA signatures to protect against side channel
3365 attacks discovered by Keegan Ryan (NCC Group).
3369 * When unlocking a pass phrase protected PEM file or PKCS#8 container, we
3370 now allow empty (zero character) pass phrases.
3374 * Certificate time validation (X509_cmp_time) enforces stricter
3375 compliance with RFC 5280. Fractional seconds and timezone offsets
3376 are no longer allowed.
3380 * Fixed a text canonicalisation bug in CMS
3382 Where a CMS detached signature is used with text content the text goes
3383 through a canonicalisation process first prior to signing or verifying a
3384 signature. This process strips trailing space at the end of lines, converts
3385 line terminators to CRLF and removes additional trailing line terminators
3386 at the end of a file. A bug in the canonicalisation process meant that
3387 some characters, such as form-feed, were incorrectly treated as whitespace
3388 and removed. This is contrary to the specification (RFC5485). This fix
3389 could mean that detached text data signed with an earlier version of
3390 OpenSSL 1.1.0 may fail to verify using the fixed version, or text data
3391 signed with a fixed OpenSSL may fail to verify with an earlier version of
3392 OpenSSL 1.1.0. A workaround is to only verify the canonicalised text data
3393 and use the "-binary" flag (for the "cms" command line application) or set
3394 the SMIME_BINARY/PKCS7_BINARY/CMS_BINARY flags (if using CMS_verify()).
3398 ### Changes between 1.1.0g and 1.1.0h [27 Mar 2018]
3400 * Constructed ASN.1 types with a recursive definition could exceed the stack
3402 Constructed ASN.1 types with a recursive definition (such as can be found
3403 in PKCS7) could eventually exceed the stack given malicious input with
3404 excessive recursion. This could result in a Denial Of Service attack. There
3405 are no such structures used within SSL/TLS that come from untrusted sources
3406 so this is considered safe.
3408 This issue was reported to OpenSSL on 4th January 2018 by the OSS-fuzz
3414 * Incorrect CRYPTO_memcmp on HP-UX PA-RISC
3416 Because of an implementation bug the PA-RISC CRYPTO_memcmp function is
3417 effectively reduced to only comparing the least significant bit of each
3418 byte. This allows an attacker to forge messages that would be considered as
3419 authenticated in an amount of tries lower than that guaranteed by the
3420 security claims of the scheme. The module can only be compiled by the
3421 HP-UX assembler, so that only HP-UX PA-RISC targets are affected.
3423 This issue was reported to OpenSSL on 2nd March 2018 by Peter Waltenberg
3429 * Add a build target 'build_all_generated', to build all generated files
3430 and only that. This can be used to prepare everything that requires
3431 things like perl for a system that lacks perl and then move everything
3432 to that system and do the rest of the build there.
3436 * Backport SSL_OP_NO_RENGOTIATION
3438 OpenSSL 1.0.2 and below had the ability to disable renegotiation using the
3439 (undocumented) SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS flag. Due to the opacity
3440 changes this is no longer possible in 1.1.0. Therefore, the new
3441 SSL_OP_NO_RENEGOTIATION option from 1.1.1-dev has been backported to
3442 1.1.0 to provide equivalent functionality.
3444 Note that if an application built against 1.1.0h headers (or above) is run
3445 using an older version of 1.1.0 (prior to 1.1.0h) then the option will be
3446 accepted but nothing will happen, i.e. renegotiation will not be prevented.
3450 * Removed the OS390-Unix config target. It relied on a script that doesn't
3455 * rsaz_1024_mul_avx2 overflow bug on x86_64
3457 There is an overflow bug in the AVX2 Montgomery multiplication procedure
3458 used in exponentiation with 1024-bit moduli. No EC algorithms are affected.
3459 Analysis suggests that attacks against RSA and DSA as a result of this
3460 defect would be very difficult to perform and are not believed likely.
3461 Attacks against DH1024 are considered just feasible, because most of the
3462 work necessary to deduce information about a private key may be performed
3463 offline. The amount of resources required for such an attack would be
3464 significant. However, for an attack on TLS to be meaningful, the server
3465 would have to share the DH1024 private key among multiple clients, which is
3466 no longer an option since CVE-2016-0701.
3468 This only affects processors that support the AVX2 but not ADX extensions
3469 like Intel Haswell (4th generation).
3471 This issue was reported to OpenSSL by David Benjamin (Google). The issue
3472 was originally found via the OSS-Fuzz project.
3477 ### Changes between 1.1.0f and 1.1.0g [2 Nov 2017]
3479 * bn_sqrx8x_internal carry bug on x86_64
3481 There is a carry propagating bug in the x86_64 Montgomery squaring
3482 procedure. No EC algorithms are affected. Analysis suggests that attacks
3483 against RSA and DSA as a result of this defect would be very difficult to
3484 perform and are not believed likely. Attacks against DH are considered just
3485 feasible (although very difficult) because most of the work necessary to
3486 deduce information about a private key may be performed offline. The amount
3487 of resources required for such an attack would be very significant and
3488 likely only accessible to a limited number of attackers. An attacker would
3489 additionally need online access to an unpatched system using the target
3490 private key in a scenario with persistent DH parameters and a private
3491 key that is shared between multiple clients.
3493 This only affects processors that support the BMI1, BMI2 and ADX extensions
3494 like Intel Broadwell (5th generation) and later or AMD Ryzen.
3496 This issue was reported to OpenSSL by the OSS-Fuzz project.
3501 * Malformed X.509 IPAddressFamily could cause OOB read
3503 If an X.509 certificate has a malformed IPAddressFamily extension,
3504 OpenSSL could do a one-byte buffer overread. The most likely result
3505 would be an erroneous display of the certificate in text format.
3507 This issue was reported to OpenSSL by the OSS-Fuzz project.
3512 ### Changes between 1.1.0e and 1.1.0f [25 May 2017]
3514 * Have 'config' recognise 64-bit mingw and choose 'mingw64' as the target
3515 platform rather than 'mingw'.
3519 * Remove the VMS-specific reimplementation of gmtime from crypto/o_times.c.
3520 VMS C's RTL has a fully up to date gmtime() and gmtime_r() since V7.1,
3521 which is the minimum version we support.
3525 ### Changes between 1.1.0d and 1.1.0e [16 Feb 2017]
3527 * Encrypt-Then-Mac renegotiation crash
3529 During a renegotiation handshake if the Encrypt-Then-Mac extension is
3530 negotiated where it was not in the original handshake (or vice-versa) then
3531 this can cause OpenSSL to crash (dependent on ciphersuite). Both clients
3532 and servers are affected.
3534 This issue was reported to OpenSSL by Joe Orton (Red Hat).
3539 ### Changes between 1.1.0c and 1.1.0d [26 Jan 2017]
3541 * Truncated packet could crash via OOB read
3543 If one side of an SSL/TLS path is running on a 32-bit host and a specific
3544 cipher is being used, then a truncated packet can cause that host to
3545 perform an out-of-bounds read, usually resulting in a crash.
3547 This issue was reported to OpenSSL by Robert Święcki of Google.
3552 * Bad (EC)DHE parameters cause a client crash
3554 If a malicious server supplies bad parameters for a DHE or ECDHE key
3555 exchange then this can result in the client attempting to dereference a
3556 NULL pointer leading to a client crash. This could be exploited in a Denial
3559 This issue was reported to OpenSSL by Guido Vranken.
3564 * BN_mod_exp may produce incorrect results on x86_64
3566 There is a carry propagating bug in the x86_64 Montgomery squaring
3567 procedure. No EC algorithms are affected. Analysis suggests that attacks
3568 against RSA and DSA as a result of this defect would be very difficult to
3569 perform and are not believed likely. Attacks against DH are considered just
3570 feasible (although very difficult) because most of the work necessary to
3571 deduce information about a private key may be performed offline. The amount
3572 of resources required for such an attack would be very significant and
3573 likely only accessible to a limited number of attackers. An attacker would
3574 additionally need online access to an unpatched system using the target
3575 private key in a scenario with persistent DH parameters and a private
3576 key that is shared between multiple clients. For example this can occur by
3577 default in OpenSSL DHE based SSL/TLS ciphersuites. Note: This issue is very
3578 similar to CVE-2015-3193 but must be treated as a separate problem.
3580 This issue was reported to OpenSSL by the OSS-Fuzz project.
3585 ### Changes between 1.1.0b and 1.1.0c [10 Nov 2016]
3587 * ChaCha20/Poly1305 heap-buffer-overflow
3589 TLS connections using `*-CHACHA20-POLY1305` ciphersuites are susceptible to
3590 a DoS attack by corrupting larger payloads. This can result in an OpenSSL
3591 crash. This issue is not considered to be exploitable beyond a DoS.
3593 This issue was reported to OpenSSL by Robert Święcki (Google Security Team)
3598 * CMS Null dereference
3600 Applications parsing invalid CMS structures can crash with a NULL pointer
3601 dereference. This is caused by a bug in the handling of the ASN.1 CHOICE
3602 type in OpenSSL 1.1.0 which can result in a NULL value being passed to the
3603 structure callback if an attempt is made to free certain invalid encodings.
3604 Only CHOICE structures using a callback which do not handle NULL value are
3607 This issue was reported to OpenSSL by Tyler Nighswander of ForAllSecure.
3612 * Montgomery multiplication may produce incorrect results
3614 There is a carry propagating bug in the Broadwell-specific Montgomery
3615 multiplication procedure that handles input lengths divisible by, but
3616 longer than 256 bits. Analysis suggests that attacks against RSA, DSA
3617 and DH private keys are impossible. This is because the subroutine in
3618 question is not used in operations with the private key itself and an input
3619 of the attacker's direct choice. Otherwise the bug can manifest itself as
3620 transient authentication and key negotiation failures or reproducible
3621 erroneous outcome of public-key operations with specially crafted input.
3622 Among EC algorithms only Brainpool P-512 curves are affected and one
3623 presumably can attack ECDH key negotiation. Impact was not analyzed in
3624 detail, because pre-requisites for attack are considered unlikely. Namely
3625 multiple clients have to choose the curve in question and the server has to
3626 share the private key among them, neither of which is default behaviour.
3627 Even then only clients that chose the curve will be affected.
3629 This issue was publicly reported as transient failures and was not
3630 initially recognized as a security issue. Thanks to Richard Morgan for
3631 providing reproducible case.
3636 * Removed automatic addition of RPATH in shared libraries and executables,
3637 as this was a remainder from OpenSSL 1.0.x and isn't needed any more.
3641 ### Changes between 1.1.0a and 1.1.0b [26 Sep 2016]
3643 * Fix Use After Free for large message sizes
3645 The patch applied to address CVE-2016-6307 resulted in an issue where if a
3646 message larger than approx 16k is received then the underlying buffer to
3647 store the incoming message is reallocated and moved. Unfortunately a
3648 dangling pointer to the old location is left which results in an attempt to
3649 write to the previously freed location. This is likely to result in a
3650 crash, however it could potentially lead to execution of arbitrary code.
3652 This issue only affects OpenSSL 1.1.0a.
3654 This issue was reported to OpenSSL by Robert Święcki.
3659 ### Changes between 1.1.0 and 1.1.0a [22 Sep 2016]
3661 * OCSP Status Request extension unbounded memory growth
3663 A malicious client can send an excessively large OCSP Status Request
3664 extension. If that client continually requests renegotiation, sending a
3665 large OCSP Status Request extension each time, then there will be unbounded
3666 memory growth on the server. This will eventually lead to a Denial Of
3667 Service attack through memory exhaustion. Servers with a default
3668 configuration are vulnerable even if they do not support OCSP. Builds using
3669 the "no-ocsp" build time option are not affected.
3671 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
3676 * SSL_peek() hang on empty record
3678 OpenSSL 1.1.0 SSL/TLS will hang during a call to SSL_peek() if the peer
3679 sends an empty record. This could be exploited by a malicious peer in a
3680 Denial Of Service attack.
3682 This issue was reported to OpenSSL by Alex Gaynor.
3687 * Excessive allocation of memory in tls_get_message_header() and
3688 dtls1_preprocess_fragment()
3690 A (D)TLS message includes 3 bytes for its length in the header for the
3691 message. This would allow for messages up to 16Mb in length. Messages of
3692 this length are excessive and OpenSSL includes a check to ensure that a
3693 peer is sending reasonably sized messages in order to avoid too much memory
3694 being consumed to service a connection. A flaw in the logic of version
3695 1.1.0 means that memory for the message is allocated too early, prior to
3696 the excessive message length check. Due to way memory is allocated in
3697 OpenSSL this could mean an attacker could force up to 21Mb to be allocated
3698 to service a connection. This could lead to a Denial of Service through
3699 memory exhaustion. However, the excessive message length check still takes
3700 place, and this would cause the connection to immediately fail. Assuming
3701 that the application calls SSL_free() on the failed connection in a timely
3702 manner then the 21Mb of allocated memory will then be immediately freed
3703 again. Therefore, the excessive memory allocation will be transitory in
3704 nature. This then means that there is only a security impact if:
3706 1) The application does not call SSL_free() in a timely manner in the event
3707 that the connection fails
3709 2) The application is working in a constrained environment where there is
3710 very little free memory
3712 3) The attacker initiates multiple connection attempts such that there are
3713 multiple connections in a state where memory has been allocated for the
3714 connection; SSL_free() has not yet been called; and there is insufficient
3715 memory to service the multiple requests.
3717 Except in the instance of (1) above any Denial Of Service is likely to be
3718 transitory because as soon as the connection fails the memory is
3719 subsequently freed again in the SSL_free() call. However there is an
3720 increased risk during this period of application crashes due to the lack of
3721 memory - which would then mean a more serious Denial of Service.
3723 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
3724 (CVE-2016-6307 and CVE-2016-6308)
3728 * solaris-x86-cc, i.e. 32-bit configuration with vendor compiler,
3729 had to be removed. Primary reason is that vendor assembler can't
3730 assemble our modules with -KPIC flag. As result it, assembly
3731 support, was not even available as option. But its lack means
3732 lack of side-channel resistant code, which is incompatible with
3733 security by todays standards. Fortunately gcc is readily available
3734 prepackaged option, which we firmly point at...
3738 ### Changes between 1.0.2h and 1.1.0 [25 Aug 2016]
3740 * Windows command-line tool supports UTF-8 opt-in option for arguments
3741 and console input. Setting OPENSSL_WIN32_UTF8 environment variable
3742 (to any value) allows Windows user to access PKCS#12 file generated
3743 with Windows CryptoAPI and protected with non-ASCII password, as well
3744 as files generated under UTF-8 locale on Linux also protected with
3749 * To mitigate the SWEET32 attack ([CVE-2016-2183]), 3DES cipher suites
3750 have been disabled by default and removed from DEFAULT, just like RC4.
3751 See the RC4 item below to re-enable both.
3755 * The method for finding the storage location for the Windows RAND seed file
3756 has changed. First we check %RANDFILE%. If that is not set then we check
3757 the directories %HOME%, %USERPROFILE% and %SYSTEMROOT% in that order. If
3758 all else fails we fall back to C:\.
3762 * The EVP_EncryptUpdate() function has had its return type changed from void
3763 to int. A return of 0 indicates and error while a return of 1 indicates
3768 * The flags RSA_FLAG_NO_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME and
3769 DH_FLAG_NO_EXP_CONSTTIME which previously provided the ability to switch
3770 off the constant time implementation for RSA, DSA and DH have been made
3771 no-ops and deprecated.
3775 * Windows RAND implementation was simplified to only get entropy by
3776 calling CryptGenRandom(). Various other RAND-related tickets
3779 *Joseph Wylie Yandle, Rich Salz*
3781 * The stack and lhash API's were renamed to start with `OPENSSL_SK_`
3782 and `OPENSSL_LH_`, respectively. The old names are available
3783 with API compatibility. They new names are now completely documented.
3787 * Unify TYPE_up_ref(obj) methods signature.
3788 SSL_CTX_up_ref(), SSL_up_ref(), X509_up_ref(), EVP_PKEY_up_ref(),
3789 X509_CRL_up_ref(), X509_OBJECT_up_ref_count() methods are now returning an
3790 int (instead of void) like all others TYPE_up_ref() methods.
3791 So now these methods also check the return value of CRYPTO_atomic_add(),
3792 and the validity of object reference counter.
3794 *fdasilvayy@gmail.com*
3796 * With Windows Visual Studio builds, the .pdb files are installed
3797 alongside the installed libraries and executables. For a static
3798 library installation, ossl_static.pdb is the associate compiler
3799 generated .pdb file to be used when linking programs.
3803 * Remove openssl.spec. Packaging files belong with the packagers.
3807 * Automatic Darwin/OSX configuration has had a refresh, it will now
3808 recognise x86_64 architectures automatically. You can still decide
3809 to build for a different bitness with the environment variable
3810 KERNEL_BITS (can be 32 or 64), for example:
3812 KERNEL_BITS=32 ./config
3816 * Change default algorithms in pkcs8 utility to use PKCS#5 v2.0,
3817 256 bit AES and HMAC with SHA256.
3821 * Remove support for MIPS o32 ABI on IRIX (and IRIX only).
3825 * Triple-DES ciphers have been moved from HIGH to MEDIUM.
3829 * To enable users to have their own config files and build file templates,
3830 Configure looks in the directory indicated by the environment variable
3831 OPENSSL_LOCAL_CONFIG_DIR as well as the in-source Configurations/
3832 directory. On VMS, OPENSSL_LOCAL_CONFIG_DIR is expected to be a logical
3833 name and is used as is.
3837 * The following datatypes were made opaque: X509_OBJECT, X509_STORE_CTX,
3838 X509_STORE, X509_LOOKUP, and X509_LOOKUP_METHOD. The unused type
3839 X509_CERT_FILE_CTX was removed.
3843 * "shared" builds are now the default. To create only static libraries use
3844 the "no-shared" Configure option.
3848 * Remove the no-aes, no-hmac, no-rsa, no-sha and no-md5 Configure options.
3849 All of these option have not worked for some while and are fundamental
3854 * Make various cleanup routines no-ops and mark them as deprecated. Most
3855 global cleanup functions are no longer required because they are handled
3856 via auto-deinit (see OPENSSL_init_crypto and OPENSSL_init_ssl man pages).
3857 Explicitly de-initing can cause problems (e.g. where a library that uses
3858 OpenSSL de-inits, but an application is still using it). The affected
3859 functions are CONF_modules_free(), ENGINE_cleanup(), OBJ_cleanup(),
3860 EVP_cleanup(), BIO_sock_cleanup(), CRYPTO_cleanup_all_ex_data(),
3861 RAND_cleanup(), SSL_COMP_free_compression_methods(), ERR_free_strings() and
3862 COMP_zlib_cleanup().
3866 * --strict-warnings no longer enables runtime debugging options
3867 such as REF_DEBUG. Instead, debug options are automatically
3868 enabled with '--debug' builds.
3870 *Andy Polyakov, Emilia Käsper*
3872 * Made DH and DH_METHOD opaque. The structures for managing DH objects
3873 have been moved out of the public header files. New functions for managing
3874 these have been added.
3878 * Made RSA and RSA_METHOD opaque. The structures for managing RSA
3879 objects have been moved out of the public header files. New
3880 functions for managing these have been added.
3884 * Made DSA and DSA_METHOD opaque. The structures for managing DSA objects
3885 have been moved out of the public header files. New functions for managing
3886 these have been added.
3890 * Made BIO and BIO_METHOD opaque. The structures for managing BIOs have been
3891 moved out of the public header files. New functions for managing these
3896 * Removed no-rijndael as a config option. Rijndael is an old name for AES.
3900 * Removed the mk1mf build scripts.
3904 * Headers are now wrapped, if necessary, with OPENSSL_NO_xxx, so
3905 it is always safe to #include a header now.
3909 * Removed the aged BC-32 config and all its supporting scripts
3913 * Removed support for Ultrix, Netware, and OS/2.
3917 * Add support for HKDF.
3919 *Alessandro Ghedini*
3921 * Add support for blake2b and blake2s
3925 * Added support for "pipelining". Ciphers that have the
3926 EVP_CIPH_FLAG_PIPELINE flag set have a capability to process multiple
3927 encryptions/decryptions simultaneously. There are currently no built-in
3928 ciphers with this property but the expectation is that engines will be able
3929 to offer it to significantly improve throughput. Support has been extended
3930 into libssl so that multiple records for a single connection can be
3931 processed in one go (for >=TLS 1.1).
3935 * Added the AFALG engine. This is an async capable engine which is able to
3936 offload work to the Linux kernel. In this initial version it only supports
3937 AES128-CBC. The kernel must be version 4.1.0 or greater.
3941 * OpenSSL now uses a new threading API. It is no longer necessary to
3942 set locking callbacks to use OpenSSL in a multi-threaded environment. There
3943 are two supported threading models: pthreads and windows threads. It is
3944 also possible to configure OpenSSL at compile time for "no-threads". The
3945 old threading API should no longer be used. The functions have been
3946 replaced with "no-op" compatibility macros.
3948 *Alessandro Ghedini, Matt Caswell*
3950 * Modify behavior of ALPN to invoke callback after SNI/servername
3951 callback, such that updates to the SSL_CTX affect ALPN.
3955 * Add SSL_CIPHER queries for authentication and key-exchange.
3959 * Changes to the DEFAULT cipherlist:
3960 - Prefer (EC)DHE handshakes over plain RSA.
3961 - Prefer AEAD ciphers over legacy ciphers.
3962 - Prefer ECDSA over RSA when both certificates are available.
3963 - Prefer TLSv1.2 ciphers/PRF.
3964 - Remove DSS, SEED, IDEA, CAMELLIA, and AES-CCM from the
3969 * Change the ECC default curve list to be this, in order: x25519,
3970 secp256r1, secp521r1, secp384r1.
3974 * RC4 based libssl ciphersuites are now classed as "weak" ciphers and are
3975 disabled by default. They can be re-enabled using the
3976 enable-weak-ssl-ciphers option to Configure.
3980 * If the server has ALPN configured, but supports no protocols that the
3981 client advertises, send a fatal "no_application_protocol" alert.
3982 This behaviour is SHALL in RFC 7301, though it isn't universally
3983 implemented by other servers.
3987 * Add X25519 support.
3988 Add ASN.1 and EVP_PKEY methods for X25519. This includes support
3989 for public and private key encoding using the format documented in
3990 draft-ietf-curdle-pkix-02. The corresponding EVP_PKEY method supports
3991 key generation and key derivation.
3993 TLS support complies with draft-ietf-tls-rfc4492bis-08 and uses
3998 * Deprecate SRP_VBASE_get_by_user.
3999 SRP_VBASE_get_by_user had inconsistent memory management behaviour.
4000 In order to fix an unavoidable memory leak ([CVE-2016-0798]),
4001 SRP_VBASE_get_by_user was changed to ignore the "fake user" SRP
4002 seed, even if the seed is configured.
4004 Users should use SRP_VBASE_get1_by_user instead. Note that in
4005 SRP_VBASE_get1_by_user, caller must free the returned value. Note
4006 also that even though configuring the SRP seed attempts to hide
4007 invalid usernames by continuing the handshake with fake
4008 credentials, this behaviour is not constant time and no strong
4009 guarantees are made that the handshake is indistinguishable from
4010 that of a valid user.
4014 * Configuration change; it's now possible to build dynamic engines
4015 without having to build shared libraries and vice versa. This
4016 only applies to the engines in `engines/`, those in `crypto/engine/`
4017 will always be built into libcrypto (i.e. "static").
4019 Building dynamic engines is enabled by default; to disable, use
4020 the configuration option "disable-dynamic-engine".
4022 The only requirements for building dynamic engines are the
4023 presence of the DSO module and building with position independent
4024 code, so they will also automatically be disabled if configuring
4025 with "disable-dso" or "disable-pic".
4027 The macros OPENSSL_NO_STATIC_ENGINE and OPENSSL_NO_DYNAMIC_ENGINE
4028 are also taken away from openssl/opensslconf.h, as they are
4033 * Configuration change; if there is a known flag to compile
4034 position independent code, it will always be applied on the
4035 libcrypto and libssl object files, and never on the application
4036 object files. This means other libraries that use routines from
4037 libcrypto / libssl can be made into shared libraries regardless
4038 of how OpenSSL was configured.
4040 If this isn't desirable, the configuration options "disable-pic"
4041 or "no-pic" can be used to disable the use of PIC. This will
4042 also disable building shared libraries and dynamic engines.
4046 * Removed JPAKE code. It was experimental and has no wide use.
4050 * The INSTALL_PREFIX Makefile variable has been renamed to
4051 DESTDIR. That makes for less confusion on what this variable
4052 is for. Also, the configuration option --install_prefix is
4057 * Heartbeat for TLS has been removed and is disabled by default
4058 for DTLS; configure with enable-heartbeats. Code that uses the
4059 old #define's might need to be updated.
4061 *Emilia Käsper, Rich Salz*
4063 * Rename REF_CHECK to REF_DEBUG.
4067 * New "unified" build system
4069 The "unified" build system is aimed to be a common system for all
4070 platforms we support. With it comes new support for VMS.
4072 This system builds supports building in a different directory tree
4073 than the source tree. It produces one Makefile (for unix family
4074 or lookalikes), or one descrip.mms (for VMS).
4076 The source of information to make the Makefile / descrip.mms is
4077 small files called 'build.info', holding the necessary
4078 information for each directory with source to compile, and a
4079 template in Configurations, like unix-Makefile.tmpl or
4082 With this change, the library names were also renamed on Windows
4083 and on VMS. They now have names that are closer to the standard
4084 on Unix, and include the major version number, and in certain
4085 cases, the architecture they are built for. See "Notes on shared
4086 libraries" in INSTALL.
4088 We rely heavily on the perl module Text::Template.
4092 * Added support for auto-initialisation and de-initialisation of the library.
4093 OpenSSL no longer requires explicit init or deinit routines to be called,
4094 except in certain circumstances. See the OPENSSL_init_crypto() and
4095 OPENSSL_init_ssl() man pages for further information.
4099 * The arguments to the DTLSv1_listen function have changed. Specifically the
4100 "peer" argument is now expected to be a BIO_ADDR object.
4102 * Rewrite of BIO networking library. The BIO library lacked consistent
4103 support of IPv6, and adding it required some more extensive
4104 modifications. This introduces the BIO_ADDR and BIO_ADDRINFO types,
4105 which hold all types of addresses and chains of address information.
4106 It also introduces a new API, with functions like BIO_socket,
4107 BIO_connect, BIO_listen, BIO_lookup and a rewrite of BIO_accept.
4108 The source/sink BIOs BIO_s_connect, BIO_s_accept and BIO_s_datagram
4109 have been adapted accordingly.
4113 * RSA_padding_check_PKCS1_type_1 now accepts inputs with and without
4118 * CRIME protection: disable compression by default, even if OpenSSL is
4119 compiled with zlib enabled. Applications can still enable compression
4120 by calling SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION), or by
4121 using the SSL_CONF library to configure compression.
4125 * The signature of the session callback configured with
4126 SSL_CTX_sess_set_get_cb was changed. The read-only input buffer
4127 was explicitly marked as `const unsigned char*` instead of
4132 * Always DPURIFY. Remove the use of uninitialized memory in the
4133 RNG, and other conditional uses of DPURIFY. This makes -DPURIFY a no-op.
4137 * Removed many obsolete configuration items, including
4138 DES_PTR, DES_RISC1, DES_RISC2, DES_INT
4139 MD2_CHAR, MD2_INT, MD2_LONG
4141 IDEA_SHORT, IDEA_LONG
4142 RC2_SHORT, RC2_LONG, RC4_LONG, RC4_CHUNK, RC4_INDEX
4144 *Rich Salz, with advice from Andy Polyakov*
4146 * Many BN internals have been moved to an internal header file.
4148 *Rich Salz with help from Andy Polyakov*
4150 * Configuration and writing out the results from it has changed.
4151 Files such as Makefile include/openssl/opensslconf.h and are now
4152 produced through general templates, such as Makefile.in and
4153 crypto/opensslconf.h.in and some help from the perl module
4156 Also, the center of configuration information is no longer
4157 Makefile. Instead, Configure produces a perl module in
4158 configdata.pm which holds most of the config data (in the hash
4159 table %config), the target data that comes from the target
4160 configuration in one of the `Configurations/*.conf` files (in
4165 * To clarify their intended purposes, the Configure options
4166 --prefix and --openssldir change their semantics, and become more
4167 straightforward and less interdependent.
4169 --prefix shall be used exclusively to give the location INSTALLTOP
4170 where programs, scripts, libraries, include files and manuals are
4171 going to be installed. The default is now /usr/local.
4173 --openssldir shall be used exclusively to give the default
4174 location OPENSSLDIR where certificates, private keys, CRLs are
4175 managed. This is also where the default openssl.cnf gets
4177 If the directory given with this option is a relative path, the
4178 values of both the --prefix value and the --openssldir value will
4179 be combined to become OPENSSLDIR.
4180 The default for --openssldir is INSTALLTOP/ssl.
4182 Anyone who uses --openssldir to specify where OpenSSL is to be
4183 installed MUST change to use --prefix instead.
4187 * The GOST engine was out of date and therefore it has been removed. An up
4188 to date GOST engine is now being maintained in an external repository.
4189 See: <https://wiki.openssl.org/index.php/Binaries>. Libssl still retains
4190 support for GOST ciphersuites (these are only activated if a GOST engine
4195 * EGD is no longer supported by default; use enable-egd when
4198 *Ben Kaduk and Rich Salz*
4200 * The distribution now has Makefile.in files, which are used to
4201 create Makefile's when Configure is run. *Configure must be run
4202 before trying to build now.*
4206 * The return value for SSL_CIPHER_description() for error conditions
4211 * Support for RFC6698/RFC7671 DANE TLSA peer authentication.
4213 Obtaining and performing DNSSEC validation of TLSA records is
4214 the application's responsibility. The application provides
4215 the TLSA records of its choice to OpenSSL, and these are then
4216 used to authenticate the peer.
4218 The TLSA records need not even come from DNS. They can, for
4219 example, be used to implement local end-entity certificate or
4220 trust-anchor "pinning", where the "pin" data takes the form
4221 of TLSA records, which can augment or replace verification
4222 based on the usual WebPKI public certification authorities.
4226 * Revert default OPENSSL_NO_DEPRECATED setting. Instead OpenSSL
4227 continues to support deprecated interfaces in default builds.
4228 However, applications are strongly advised to compile their
4229 source files with -DOPENSSL_API_COMPAT=0x10100000L, which hides
4230 the declarations of all interfaces deprecated in 0.9.8, 1.0.0
4231 or the 1.1.0 releases.
4233 In environments in which all applications have been ported to
4234 not use any deprecated interfaces OpenSSL's Configure script
4235 should be used with the --api=1.1.0 option to entirely remove
4236 support for the deprecated features from the library and
4237 unconditionally disable them in the installed headers.
4238 Essentially the same effect can be achieved with the "no-deprecated"
4239 argument to Configure, except that this will always restrict
4240 the build to just the latest API, rather than a fixed API
4243 As applications are ported to future revisions of the API,
4244 they should update their compile-time OPENSSL_API_COMPAT define
4245 accordingly, but in most cases should be able to continue to
4246 compile with later releases.
4248 The OPENSSL_API_COMPAT versions for 1.0.0, and 0.9.8 are
4249 0x10000000L and 0x00908000L, respectively. However those
4250 versions did not support the OPENSSL_API_COMPAT feature, and
4251 so applications are not typically tested for explicit support
4252 of just the undeprecated features of either release.
4256 * Add support for setting the minimum and maximum supported protocol.
4257 It can bet set via the SSL_set_min_proto_version() and
4258 SSL_set_max_proto_version(), or via the SSL_CONF's MinProtocol and
4259 MaxProtocol. It's recommended to use the new APIs to disable
4260 protocols instead of disabling individual protocols using
4261 SSL_set_options() or SSL_CONF's Protocol. This change also
4262 removes support for disabling TLS 1.2 in the OpenSSL TLS
4263 client at compile time by defining OPENSSL_NO_TLS1_2_CLIENT.
4267 * Support for ChaCha20 and Poly1305 added to libcrypto and libssl.
4271 * New EC_KEY_METHOD, this replaces the older ECDSA_METHOD and ECDH_METHOD
4272 and integrates ECDSA and ECDH functionality into EC. Implementations can
4273 now redirect key generation and no longer need to convert to or from
4276 Note: the ecdsa.h and ecdh.h headers are now no longer needed and just
4277 include the ec.h header file instead.
4281 * Remove support for all 40 and 56 bit ciphers. This includes all the export
4282 ciphers who are no longer supported and drops support the ephemeral RSA key
4283 exchange. The LOW ciphers currently doesn't have any ciphers in it.
4287 * Made EVP_MD_CTX, EVP_MD, EVP_CIPHER_CTX, EVP_CIPHER and HMAC_CTX
4288 opaque. For HMAC_CTX, the following constructors and destructors
4291 HMAC_CTX *HMAC_CTX_new(void);
4292 void HMAC_CTX_free(HMAC_CTX *ctx);
4294 For EVP_MD and EVP_CIPHER, complete APIs to create, fill and
4295 destroy such methods has been added. See EVP_MD_meth_new(3) and
4296 EVP_CIPHER_meth_new(3) for documentation.
4299 1) `EVP_MD_CTX_cleanup()`, `EVP_CIPHER_CTX_cleanup()` and
4300 `HMAC_CTX_cleanup()` were removed. `HMAC_CTX_reset()` and
4301 `EVP_MD_CTX_reset()` should be called instead to reinitialise
4302 an already created structure.
4303 2) For consistency with the majority of our object creators and
4304 destructors, `EVP_MD_CTX_(create|destroy)` were renamed to
4305 `EVP_MD_CTX_(new|free)`. The old names are retained as macros
4306 for deprecated builds.
4310 * Added ASYNC support. Libcrypto now includes the async sub-library to enable
4311 cryptographic operations to be performed asynchronously as long as an
4312 asynchronous capable engine is used. See the ASYNC_start_job() man page for
4313 further details. Libssl has also had this capability integrated with the
4314 introduction of the new mode SSL_MODE_ASYNC and associated error
4315 SSL_ERROR_WANT_ASYNC. See the SSL_CTX_set_mode() and SSL_get_error() man
4316 pages. This work was developed in partnership with Intel Corp.
4320 * SSL_{CTX_}set_ecdh_auto() has been removed and ECDH is support is
4321 always enabled now. If you want to disable the support you should
4322 exclude it using the list of supported ciphers. This also means that the
4323 "-no_ecdhe" option has been removed from s_server.
4327 * SSL_{CTX}_set_tmp_ecdh() which can set 1 EC curve now internally calls
4328 SSL_{CTX_}set1_curves() which can set a list.
4332 * Remove support for SSL_{CTX_}set_tmp_ecdh_callback(). You should set the
4333 curve you want to support using SSL_{CTX_}set1_curves().
4337 * State machine rewrite. The state machine code has been significantly
4338 refactored in order to remove much duplication of code and solve issues
4339 with the old code (see [ssl/statem/README.md](ssl/statem/README.md) for
4340 further details). This change does have some associated API changes.
4341 Notably the SSL_state() function has been removed and replaced by
4342 SSL_get_state which now returns an "OSSL_HANDSHAKE_STATE" instead of an int.
4343 SSL_set_state() has been removed altogether. The previous handshake states
4344 defined in ssl.h and ssl3.h have also been removed.
4348 * All instances of the string "ssleay" in the public API were replaced
4349 with OpenSSL (case-matching; e.g., OPENSSL_VERSION for #define's)
4350 Some error codes related to internal RSA_eay API's were renamed.
4354 * The demo files in crypto/threads were moved to demo/threads.
4358 * Removed obsolete engines: 4758cca, aep, atalla, cswift, nuron, gmp,
4361 *Matt Caswell, Rich Salz*
4363 * New ASN.1 embed macro.
4365 New ASN.1 macro ASN1_EMBED. This is the same as ASN1_SIMPLE except the
4366 structure is not allocated: it is part of the parent. That is instead of
4374 This reduces memory fragmentation and make it impossible to accidentally
4375 set a mandatory field to NULL.
4377 This currently only works for some fields specifically a SEQUENCE, CHOICE,
4378 or ASN1_STRING type which is part of a parent SEQUENCE. Since it is
4379 equivalent to ASN1_SIMPLE it cannot be tagged, OPTIONAL, SET OF or
4384 * Remove EVP_CHECK_DES_KEY, a compile-time option that never compiled.
4388 * Removed DES and RC4 ciphersuites from DEFAULT. Also removed RC2 although
4389 in 1.0.2 EXPORT was already removed and the only RC2 ciphersuite is also
4390 an EXPORT one. COMPLEMENTOFDEFAULT has been updated accordingly to add
4391 DES and RC4 ciphersuites.
4395 * Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
4396 This changes the decoding behaviour for some invalid messages,
4397 though the change is mostly in the more lenient direction, and
4398 legacy behaviour is preserved as much as possible.
4402 * Fix no-stdio build.
4403 *David Woodhouse <David.Woodhouse@intel.com> and also*
4404 *Ivan Nestlerode <ivan.nestlerode@sonos.com>*
4406 * New testing framework
4407 The testing framework has been largely rewritten and is now using
4408 perl and the perl modules Test::Harness and an extended variant of
4409 Test::More called OpenSSL::Test to do its work. All test scripts in
4410 test/ have been rewritten into test recipes, and all direct calls to
4411 executables in test/Makefile have become individual recipes using the
4412 simplified testing OpenSSL::Test::Simple.
4414 For documentation on our testing modules, do:
4416 perldoc test/testlib/OpenSSL/Test/Simple.pm
4417 perldoc test/testlib/OpenSSL/Test.pm
4421 * Revamped memory debug; only -DCRYPTO_MDEBUG and -DCRYPTO_MDEBUG_ABORT
4422 are used; the latter aborts on memory leaks (usually checked on exit).
4423 Some undocumented "set malloc, etc., hooks" functions were removed
4424 and others were changed. All are now documented.
4428 * In DSA_generate_parameters_ex, if the provided seed is too short,
4431 *Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>*
4433 * Rewrite PSK to support ECDHE_PSK, DHE_PSK and RSA_PSK. Add ciphersuites
4434 from RFC4279, RFC4785, RFC5487, RFC5489.
4436 Thanks to Christian J. Dietrich and Giuseppe D'Angelo for the
4437 original RSA_PSK patch.
4441 * Dropped support for the SSL3_FLAGS_DELAY_CLIENT_FINISHED flag. This SSLeay
4442 era flag was never set throughout the codebase (only read). Also removed
4443 SSL3_FLAGS_POP_BUFFER which was only used if
4444 SSL3_FLAGS_DELAY_CLIENT_FINISHED was also set.
4448 * Changed the default name options in the "ca", "crl", "req" and "x509"
4449 to be "oneline" instead of "compat".
4453 * Remove SSL_OP_TLS_BLOCK_PADDING_BUG. This is SSLeay legacy, we're
4454 not aware of clients that still exhibit this bug, and the workaround
4455 hasn't been working properly for a while.
4459 * The return type of BIO_number_read() and BIO_number_written() as well as
4460 the corresponding num_read and num_write members in the BIO structure has
4461 changed from unsigned long to uint64_t. On platforms where an unsigned
4462 long is 32 bits (e.g. Windows) these counters could overflow if >4Gb is
4467 * Given the pervasive nature of TLS extensions it is inadvisable to run
4468 OpenSSL without support for them. It also means that maintaining
4469 the OPENSSL_NO_TLSEXT option within the code is very invasive (and probably
4470 not well tested). Therefore, the OPENSSL_NO_TLSEXT option has been removed.
4474 * Removed support for the two export grade static DH ciphersuites
4475 EXP-DH-RSA-DES-CBC-SHA and EXP-DH-DSS-DES-CBC-SHA. These two ciphersuites
4476 were newly added (along with a number of other static DH ciphersuites) to
4477 1.0.2. However the two export ones have *never* worked since they were
4478 introduced. It seems strange in any case to be adding new export
4479 ciphersuites, and given "logjam" it also does not seem correct to fix them.
4483 * Version negotiation has been rewritten. In particular SSLv23_method(),
4484 SSLv23_client_method() and SSLv23_server_method() have been deprecated,
4485 and turned into macros which simply call the new preferred function names
4486 TLS_method(), TLS_client_method() and TLS_server_method(). All new code
4487 should use the new names instead. Also as part of this change the ssl23.h
4488 header file has been removed.
4492 * Support for Kerberos ciphersuites in TLS (RFC2712) has been removed. This
4493 code and the associated standard is no longer considered fit-for-purpose.
4497 * RT2547 was closed. When generating a private key, try to make the
4498 output file readable only by the owner. This behavior change might
4499 be noticeable when interacting with other software.
4501 * Documented all exdata functions. Added CRYPTO_free_ex_index.
4506 * Added HTTP GET support to the ocsp command.
4510 * Changed default digest for the dgst and enc commands from MD5 to
4515 * RAND_pseudo_bytes has been deprecated. Users should use RAND_bytes instead.
4519 * Added support for TLS extended master secret from
4520 draft-ietf-tls-session-hash-03.txt. Thanks for Alfredo Pironti for an
4521 initial patch which was a great help during development.
4525 * All libssl internal structures have been removed from the public header
4526 files, and the OPENSSL_NO_SSL_INTERN option has been removed (since it is
4527 now redundant). Users should not attempt to access internal structures
4528 directly. Instead they should use the provided API functions.
4532 * config has been changed so that by default OPENSSL_NO_DEPRECATED is used.
4533 Access to deprecated functions can be re-enabled by running config with
4534 "enable-deprecated". In addition applications wishing to use deprecated
4535 functions must define OPENSSL_USE_DEPRECATED. Note that this new behaviour
4536 will, by default, disable some transitive includes that previously existed
4537 in the header files (e.g. ec.h will no longer, by default, include bn.h)
4541 * Added support for OCB mode. OpenSSL has been granted a patent license
4542 compatible with the OpenSSL license for use of OCB. Details are available
4543 at <https://www.openssl.org/source/OCB-patent-grant-OpenSSL.pdf>. Support
4544 for OCB can be removed by calling config with no-ocb.
4548 * SSLv2 support has been removed. It still supports receiving an SSLv2
4549 compatible client hello.
4553 * Increased the minimal RSA keysize from 256 to 512 bits [Rich Salz],
4554 done while fixing the error code for the key-too-small case.
4556 *Annie Yousar <a.yousar@informatik.hu-berlin.de>*
4558 * CA.sh has been removed; use CA.pl instead.
4562 * Removed old DES API.
4566 * Remove various unsupported platforms:
4572 Sinix/ReliantUNIX RM400
4577 16-bit platforms such as WIN16
4581 * Clean up OPENSSL_NO_xxx #define's
4582 - Use setbuf() and remove OPENSSL_NO_SETVBUF_IONBF
4583 - Rename OPENSSL_SYSNAME_xxx to OPENSSL_SYS_xxx
4584 - OPENSSL_NO_EC{DH,DSA} merged into OPENSSL_NO_EC
4585 - OPENSSL_NO_RIPEMD160, OPENSSL_NO_RIPEMD merged into OPENSSL_NO_RMD160
4586 - OPENSSL_NO_FP_API merged into OPENSSL_NO_STDIO
4587 - Remove OPENSSL_NO_BIO OPENSSL_NO_BUFFER OPENSSL_NO_CHAIN_VERIFY
4588 OPENSSL_NO_EVP OPENSSL_NO_FIPS_ERR OPENSSL_NO_HASH_COMP
4589 OPENSSL_NO_LHASH OPENSSL_NO_OBJECT OPENSSL_NO_SPEED OPENSSL_NO_STACK
4590 OPENSSL_NO_X509 OPENSSL_NO_X509_VERIFY
4591 - Remove MS_STATIC; it's a relic from platforms <32 bits.
4595 * Cleaned up dead code
4596 Remove all but one '#ifdef undef' which is to be looked at.
4600 * Clean up calling of xxx_free routines.
4601 Just like free(), fix most of the xxx_free routines to accept
4602 NULL. Remove the non-null checks from callers. Save much code.
4606 * Add secure heap for storage of private keys (when possible).
4607 Add BIO_s_secmem(), CBIGNUM, etc.
4608 Contributed by Akamai Technologies under our Corporate CLA.
4612 * Experimental support for a new, fast, unbiased prime candidate generator,
4613 bn_probable_prime_dh_coprime(). Not currently used by any prime generator.
4615 *Felix Laurie von Massenbach <felix@erbridge.co.uk>*
4617 * New output format NSS in the sess_id command line tool. This allows
4618 exporting the session id and the master key in NSS keylog format.
4620 *Martin Kaiser <martin@kaiser.cx>*
4622 * Harmonize version and its documentation. -f flag is used to display
4625 *mancha <mancha1@zoho.com>*
4627 * Fix eckey_priv_encode so it immediately returns an error upon a failure
4628 in i2d_ECPrivateKey. Thanks to Ted Unangst for feedback on this issue.
4630 *mancha <mancha1@zoho.com>*
4632 * Fix some double frees. These are not thought to be exploitable.
4634 *mancha <mancha1@zoho.com>*
4636 * A missing bounds check in the handling of the TLS heartbeat extension
4637 can be used to reveal up to 64k of memory to a connected client or
4640 Thanks for Neel Mehta of Google Security for discovering this bug and to
4641 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
4642 preparing the fix ([CVE-2014-0160])
4644 *Adam Langley, Bodo Moeller*
4646 * Fix for the attack described in the paper "Recovering OpenSSL
4647 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
4648 by Yuval Yarom and Naomi Benger. Details can be obtained from:
4649 <http://eprint.iacr.org/2014/140>
4651 Thanks to Yuval Yarom and Naomi Benger for discovering this
4652 flaw and to Yuval Yarom for supplying a fix ([CVE-2014-0076])
4654 *Yuval Yarom and Naomi Benger*
4656 * Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
4657 this fixes a limitation in previous versions of OpenSSL.
4661 * Experimental encrypt-then-mac support.
4663 Experimental support for encrypt then mac from
4664 draft-gutmann-tls-encrypt-then-mac-02.txt
4666 To enable it set the appropriate extension number (0x42 for the test
4667 server) using e.g. -DTLSEXT_TYPE_encrypt_then_mac=0x42
4669 For non-compliant peers (i.e. just about everything) this should have no
4672 WARNING: EXPERIMENTAL, SUBJECT TO CHANGE.
4676 * Add EVP support for key wrapping algorithms, to avoid problems with
4677 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
4678 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
4679 algorithms and include tests cases.
4683 * Extend CMS code to support RSA-PSS signatures and RSA-OAEP for
4688 * Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
4689 MGF1 digest and OAEP label.
4693 * Make openssl verify return errors.
4695 *Chris Palmer <palmer@google.com> and Ben Laurie*
4697 * New function ASN1_TIME_diff to calculate the difference between two
4698 ASN1_TIME structures or one structure and the current time.
4702 * Update fips_test_suite to support multiple command line options. New
4703 test to induce all self test errors in sequence and check expected
4708 * Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and
4709 sign or verify all in one operation.
4713 * Add fips_algvs: a multicall fips utility incorporating all the algorithm
4714 test programs and fips_test_suite. Includes functionality to parse
4715 the minimal script output of fipsalgest.pl directly.
4719 * Add authorisation parameter to FIPS_module_mode_set().
4723 * Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves.
4727 * Use separate DRBG fields for internal and external flags. New function
4728 FIPS_drbg_health_check() to perform on demand health checking. Add
4729 generation tests to fips_test_suite with reduced health check interval to
4730 demonstrate periodic health checking. Add "nodh" option to
4731 fips_test_suite to skip very slow DH test.
4735 * New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers
4740 * More extensive health check for DRBG checking many more failure modes.
4741 New function FIPS_selftest_drbg_all() to handle every possible DRBG
4742 combination: call this in fips_test_suite.
4746 * Add support for canonical generation of DSA parameter 'g'. See
4749 * Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
4750 POST to handle HMAC cases.
4754 * Add functions FIPS_module_version() and FIPS_module_version_text()
4755 to return numerical and string versions of the FIPS module number.
4759 * Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
4760 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implemented
4761 outside the validated module in the FIPS capable OpenSSL.
4765 * Minor change to DRBG entropy callback semantics. In some cases
4766 there is no multiple of the block length between min_len and
4767 max_len. Allow the callback to return more than max_len bytes
4768 of entropy but discard any extra: it is the callback's responsibility
4769 to ensure that the extra data discarded does not impact the
4770 requested amount of entropy.
4774 * Add PRNG security strength checks to RSA, DSA and ECDSA using
4775 information in FIPS186-3, SP800-57 and SP800-131A.
4779 * CCM support via EVP. Interface is very similar to GCM case except we
4780 must supply all data in one chunk (i.e. no update, final) and the
4781 message length must be supplied if AAD is used. Add algorithm test
4786 * Initial version of POST overhaul. Add POST callback to allow the status
4787 of POST to be monitored and/or failures induced. Modify fips_test_suite
4788 to use callback. Always run all selftests even if one fails.
4792 * XTS support including algorithm test driver in the fips_gcmtest program.
4793 Note: this does increase the maximum key length from 32 to 64 bytes but
4794 there should be no binary compatibility issues as existing applications
4795 will never use XTS mode.
4799 * Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
4800 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
4801 performs algorithm blocking for unapproved PRNG types. Also do not
4802 set PRNG type in FIPS_mode_set(): leave this to the application.
4803 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
4804 the standard OpenSSL PRNG: set additional data to a date time vector.
4808 * Rename old X9.31 PRNG functions of the form `FIPS_rand*` to `FIPS_x931*`.
4809 This shouldn't present any incompatibility problems because applications
4810 shouldn't be using these directly and any that are will need to rethink
4811 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
4815 * Extensive self tests and health checking required by SP800-90 DRBG.
4816 Remove strength parameter from FIPS_drbg_instantiate and always
4817 instantiate at maximum supported strength.
4821 * Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
4825 * New algorithm test program fips_dhvs to handle DH primitives only testing.
4829 * New function DH_compute_key_padded() to compute a DH key and pad with
4830 leading zeroes if needed: this complies with SP800-56A et al.
4834 * Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
4835 anything, incomplete, subject to change and largely untested at present.
4839 * Modify fipscanisteronly build option to only build the necessary object
4840 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
4844 * Add experimental option FIPSSYMS to give all symbols in
4845 fipscanister.o and FIPS or fips prefix. This will avoid
4846 conflicts with future versions of OpenSSL. Add perl script
4847 util/fipsas.pl to preprocess assembly language source files
4848 and rename any affected symbols.
4852 * Add selftest checks and algorithm block of non-fips algorithms in
4853 FIPS mode. Remove DES2 from selftests.
4857 * Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
4858 return internal method without any ENGINE dependencies. Add new
4859 tiny fips sign and verify functions.
4863 * New build option no-ec2m to disable characteristic 2 code.
4867 * New build option "fipscanisteronly". This only builds fipscanister.o
4868 and (currently) associated fips utilities. Uses the file Makefile.fips
4869 instead of Makefile.org as the prototype.
4873 * Add some FIPS mode restrictions to GCM. Add internal IV generator.
4874 Update fips_gcmtest to use IV generator.
4878 * Initial, experimental EVP support for AES-GCM. AAD can be input by
4879 setting output buffer to NULL. The `*Final` function must be
4880 called although it will not retrieve any additional data. The tag
4881 can be set or retrieved with a ctrl. The IV length is by default 12
4882 bytes (96 bits) but can be set to an alternative value. If the IV
4883 length exceeds the maximum IV length (currently 16 bytes) it cannot be
4888 * New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
4889 underlying do_cipher function handles all cipher semantics itself
4890 including padding and finalisation. This is useful if (for example)
4891 an ENGINE cipher handles block padding itself. The behaviour of
4892 do_cipher is subtly changed if this flag is set: the return value
4893 is the number of characters written to the output buffer (zero is
4894 no longer an error code) or a negative error code. Also if the
4895 input buffer is NULL and length 0 finalisation should be performed.
4899 * If a candidate issuer certificate is already part of the constructed
4900 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
4904 * Improve forward-security support: add functions
4906 void SSL_CTX_set_not_resumable_session_callback(
4907 SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
4908 void SSL_set_not_resumable_session_callback(
4909 SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
4911 for use by SSL/TLS servers; the callback function will be called whenever a
4912 new session is created, and gets to decide whether the session may be
4913 cached to make it resumable (return 0) or not (return 1). (As by the
4914 SSL/TLS protocol specifications, the session_id sent by the server will be
4915 empty to indicate that the session is not resumable; also, the server will
4916 not generate RFC 4507 (RFC 5077) session tickets.)
4918 A simple reasonable callback implementation is to return is_forward_secure.
4919 This parameter will be set to 1 or 0 depending on the ciphersuite selected
4920 by the SSL/TLS server library, indicating whether it can provide forward
4923 *Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)*
4925 * New -verify_name option in command line utilities to set verification
4930 * Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
4931 Add CMAC pkey methods.
4935 * Experimental renegotiation in s_server -www mode. If the client
4936 browses /reneg connection is renegotiated. If /renegcert it is
4937 renegotiated requesting a certificate.
4941 * Add an "external" session cache for debugging purposes to s_server. This
4942 should help trace issues which normally are only apparent in deployed
4943 multi-process servers.
4947 * Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
4948 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
4949 BIO_set_cipher() and some obscure PEM functions were changed so they
4950 can now return an error. The RAND changes required a change to the
4951 RAND_METHOD structure.
4955 * New macro `__owur` for "OpenSSL Warn Unused Result". This makes use of
4956 a gcc attribute to warn if the result of a function is ignored. This
4957 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
4958 whose return value is often ignored.
4962 * New -noct, -requestct, -requirect and -ctlogfile options for s_client.
4963 These allow SCTs (signed certificate timestamps) to be requested and
4964 validated when establishing a connection.
4966 *Rob Percival <robpercival@google.com>*
4971 ### Changes between 1.0.2s and 1.0.2t [10 Sep 2019]
4973 * For built-in EC curves, ensure an EC_GROUP built from the curve name is
4974 used even when parsing explicit parameters, when loading a encoded key
4975 or calling `EC_GROUP_new_from_ecpkparameters()`/
4976 `EC_GROUP_new_from_ecparameters()`.
4977 This prevents bypass of security hardening and performance gains,
4978 especially for curves with specialized EC_METHODs.
4979 By default, if a key encoded with explicit parameters is loaded and later
4980 encoded, the output is still encoded with explicit parameters, even if
4981 internally a "named" EC_GROUP is used for computation.
4985 * Compute ECC cofactors if not provided during EC_GROUP construction. Before
4986 this change, EC_GROUP_set_generator would accept order and/or cofactor as
4987 NULL. After this change, only the cofactor parameter can be NULL. It also
4988 does some minimal sanity checks on the passed order.
4993 * Fixed a padding oracle in PKCS7_dataDecode and CMS_decrypt_set1_pkey.
4994 An attack is simple, if the first CMS_recipientInfo is valid but the
4995 second CMS_recipientInfo is chosen ciphertext. If the second
4996 recipientInfo decodes to PKCS #1 v1.5 form plaintext, the correct
4997 encryption key will be replaced by garbage, and the message cannot be
4998 decoded, but if the RSA decryption fails, the correct encryption key is
4999 used and the recipient will not notice the attack.
5000 As a work around for this potential attack the length of the decrypted
5001 key must be equal to the cipher default key length, in case the
5002 certificate is not given and all recipientInfo are tried out.
5003 The old behaviour can be re-enabled in the CMS code by setting the
5004 CMS_DEBUG_DECRYPT flag.
5009 * Document issue with installation paths in diverse Windows builds
5011 '/usr/local/ssl' is an unsafe prefix for location to install OpenSSL
5012 binaries and run-time config file.
5017 ### Changes between 1.0.2r and 1.0.2s [28 May 2019]
5019 * Change the default RSA, DSA and DH size to 2048 bit instead of 1024.
5020 This changes the size when using the `genpkey` command when no size is given.
5021 It fixes an omission in earlier changes that changed all RSA, DSA and DH
5022 generation commands to use 2048 bits by default.
5026 * Add FIPS support for Android Arm 64-bit
5028 Support for Android Arm 64-bit was added to the OpenSSL FIPS Object
5029 Module in Version 2.0.10. For some reason, the corresponding target
5030 'android64-aarch64' was missing OpenSSL 1.0.2, whence it could not be
5031 built with FIPS support on Android Arm 64-bit. This omission has been
5034 *Matthias St. Pierre*
5036 ### Changes between 1.0.2q and 1.0.2r [26 Feb 2019]
5038 * 0-byte record padding oracle
5040 If an application encounters a fatal protocol error and then calls
5041 SSL_shutdown() twice (once to send a close_notify, and once to receive one)
5042 then OpenSSL can respond differently to the calling application if a 0 byte
5043 record is received with invalid padding compared to if a 0 byte record is
5044 received with an invalid MAC. If the application then behaves differently
5045 based on that in a way that is detectable to the remote peer, then this
5046 amounts to a padding oracle that could be used to decrypt data.
5048 In order for this to be exploitable "non-stitched" ciphersuites must be in
5049 use. Stitched ciphersuites are optimised implementations of certain
5050 commonly used ciphersuites. Also the application must call SSL_shutdown()
5051 twice even if a protocol error has occurred (applications should not do
5052 this but some do anyway).
5054 This issue was discovered by Juraj Somorovsky, Robert Merget and Nimrod
5055 Aviram, with additional investigation by Steven Collison and Andrew
5056 Hourselt. It was reported to OpenSSL on 10th December 2018.
5061 * Move strictness check from EVP_PKEY_asn1_new() to EVP_PKEY_asn1_add0().
5065 ### Changes between 1.0.2p and 1.0.2q [20 Nov 2018]
5067 * Microarchitecture timing vulnerability in ECC scalar multiplication
5069 OpenSSL ECC scalar multiplication, used in e.g. ECDSA and ECDH, has been
5070 shown to be vulnerable to a microarchitecture timing side channel attack.
5071 An attacker with sufficient access to mount local timing attacks during
5072 ECDSA signature generation could recover the private key.
5074 This issue was reported to OpenSSL on 26th October 2018 by Alejandro
5075 Cabrera Aldaya, Billy Brumley, Sohaib ul Hassan, Cesar Pereida Garcia and
5081 * Timing vulnerability in DSA signature generation
5083 The OpenSSL DSA signature algorithm has been shown to be vulnerable to a
5084 timing side channel attack. An attacker could use variations in the signing
5085 algorithm to recover the private key.
5087 This issue was reported to OpenSSL on 16th October 2018 by Samuel Weiser.
5092 * Resolve a compatibility issue in EC_GROUP handling with the FIPS Object
5093 Module, accidentally introduced while backporting security fixes from the
5094 development branch and hindering the use of ECC in FIPS mode.
5098 ### Changes between 1.0.2o and 1.0.2p [14 Aug 2018]
5100 * Client DoS due to large DH parameter
5102 During key agreement in a TLS handshake using a DH(E) based ciphersuite a
5103 malicious server can send a very large prime value to the client. This will
5104 cause the client to spend an unreasonably long period of time generating a
5105 key for this prime resulting in a hang until the client has finished. This
5106 could be exploited in a Denial Of Service attack.
5108 This issue was reported to OpenSSL on 5th June 2018 by Guido Vranken
5113 * Cache timing vulnerability in RSA Key Generation
5115 The OpenSSL RSA Key generation algorithm has been shown to be vulnerable to
5116 a cache timing side channel attack. An attacker with sufficient access to
5117 mount cache timing attacks during the RSA key generation process could
5118 recover the private key.
5120 This issue was reported to OpenSSL on 4th April 2018 by Alejandro Cabrera
5121 Aldaya, Billy Brumley, Cesar Pereida Garcia and Luis Manuel Alvarez Tapia.
5126 * Make EVP_PKEY_asn1_new() a bit stricter about its input. A NULL pem_str
5127 parameter is no longer accepted, as it leads to a corrupt table. NULL
5128 pem_str is reserved for alias entries only.
5132 * Revert blinding in ECDSA sign and instead make problematic addition
5133 length-invariant. Switch even to fixed-length Montgomery multiplication.
5137 * Change generating and checking of primes so that the error rate of not
5138 being prime depends on the intended use based on the size of the input.
5139 For larger primes this will result in more rounds of Miller-Rabin.
5140 The maximal error rate for primes with more than 1080 bits is lowered
5143 *Kurt Roeckx, Annie Yousar*
5145 * Increase the number of Miller-Rabin rounds for DSA key generating to 64.
5149 * Add blinding to ECDSA and DSA signatures to protect against side channel
5150 attacks discovered by Keegan Ryan (NCC Group).
5154 * When unlocking a pass phrase protected PEM file or PKCS#8 container, we
5155 now allow empty (zero character) pass phrases.
5159 * Certificate time validation (X509_cmp_time) enforces stricter
5160 compliance with RFC 5280. Fractional seconds and timezone offsets
5161 are no longer allowed.
5165 ### Changes between 1.0.2n and 1.0.2o [27 Mar 2018]
5167 * Constructed ASN.1 types with a recursive definition could exceed the stack
5169 Constructed ASN.1 types with a recursive definition (such as can be found
5170 in PKCS7) could eventually exceed the stack given malicious input with
5171 excessive recursion. This could result in a Denial Of Service attack. There
5172 are no such structures used within SSL/TLS that come from untrusted sources
5173 so this is considered safe.
5175 This issue was reported to OpenSSL on 4th January 2018 by the OSS-fuzz
5181 ### Changes between 1.0.2m and 1.0.2n [7 Dec 2017]
5183 * Read/write after SSL object in error state
5185 OpenSSL 1.0.2 (starting from version 1.0.2b) introduced an "error state"
5186 mechanism. The intent was that if a fatal error occurred during a handshake
5187 then OpenSSL would move into the error state and would immediately fail if
5188 you attempted to continue the handshake. This works as designed for the
5189 explicit handshake functions (SSL_do_handshake(), SSL_accept() and
5190 SSL_connect()), however due to a bug it does not work correctly if
5191 SSL_read() or SSL_write() is called directly. In that scenario, if the
5192 handshake fails then a fatal error will be returned in the initial function
5193 call. If SSL_read()/SSL_write() is subsequently called by the application
5194 for the same SSL object then it will succeed and the data is passed without
5195 being decrypted/encrypted directly from the SSL/TLS record layer.
5197 In order to exploit this issue an application bug would have to be present
5198 that resulted in a call to SSL_read()/SSL_write() being issued after having
5199 already received a fatal error.
5201 This issue was reported to OpenSSL by David Benjamin (Google).
5206 * rsaz_1024_mul_avx2 overflow bug on x86_64
5208 There is an overflow bug in the AVX2 Montgomery multiplication procedure
5209 used in exponentiation with 1024-bit moduli. No EC algorithms are affected.
5210 Analysis suggests that attacks against RSA and DSA as a result of this
5211 defect would be very difficult to perform and are not believed likely.
5212 Attacks against DH1024 are considered just feasible, because most of the
5213 work necessary to deduce information about a private key may be performed
5214 offline. The amount of resources required for such an attack would be
5215 significant. However, for an attack on TLS to be meaningful, the server
5216 would have to share the DH1024 private key among multiple clients, which is
5217 no longer an option since CVE-2016-0701.
5219 This only affects processors that support the AVX2 but not ADX extensions
5220 like Intel Haswell (4th generation).
5222 This issue was reported to OpenSSL by David Benjamin (Google). The issue
5223 was originally found via the OSS-Fuzz project.
5228 ### Changes between 1.0.2l and 1.0.2m [2 Nov 2017]
5230 * bn_sqrx8x_internal carry bug on x86_64
5232 There is a carry propagating bug in the x86_64 Montgomery squaring
5233 procedure. No EC algorithms are affected. Analysis suggests that attacks
5234 against RSA and DSA as a result of this defect would be very difficult to
5235 perform and are not believed likely. Attacks against DH are considered just
5236 feasible (although very difficult) because most of the work necessary to
5237 deduce information about a private key may be performed offline. The amount
5238 of resources required for such an attack would be very significant and
5239 likely only accessible to a limited number of attackers. An attacker would
5240 additionally need online access to an unpatched system using the target
5241 private key in a scenario with persistent DH parameters and a private
5242 key that is shared between multiple clients.
5244 This only affects processors that support the BMI1, BMI2 and ADX extensions
5245 like Intel Broadwell (5th generation) and later or AMD Ryzen.
5247 This issue was reported to OpenSSL by the OSS-Fuzz project.
5252 * Malformed X.509 IPAddressFamily could cause OOB read
5254 If an X.509 certificate has a malformed IPAddressFamily extension,
5255 OpenSSL could do a one-byte buffer overread. The most likely result
5256 would be an erroneous display of the certificate in text format.
5258 This issue was reported to OpenSSL by the OSS-Fuzz project.
5262 ### Changes between 1.0.2k and 1.0.2l [25 May 2017]
5264 * Have 'config' recognise 64-bit mingw and choose 'mingw64' as the target
5265 platform rather than 'mingw'.
5269 ### Changes between 1.0.2j and 1.0.2k [26 Jan 2017]
5271 * Truncated packet could crash via OOB read
5273 If one side of an SSL/TLS path is running on a 32-bit host and a specific
5274 cipher is being used, then a truncated packet can cause that host to
5275 perform an out-of-bounds read, usually resulting in a crash.
5277 This issue was reported to OpenSSL by Robert Święcki of Google.
5282 * BN_mod_exp may produce incorrect results on x86_64
5284 There is a carry propagating bug in the x86_64 Montgomery squaring
5285 procedure. No EC algorithms are affected. Analysis suggests that attacks
5286 against RSA and DSA as a result of this defect would be very difficult to
5287 perform and are not believed likely. Attacks against DH are considered just
5288 feasible (although very difficult) because most of the work necessary to
5289 deduce information about a private key may be performed offline. The amount
5290 of resources required for such an attack would be very significant and
5291 likely only accessible to a limited number of attackers. An attacker would
5292 additionally need online access to an unpatched system using the target
5293 private key in a scenario with persistent DH parameters and a private
5294 key that is shared between multiple clients. For example this can occur by
5295 default in OpenSSL DHE based SSL/TLS ciphersuites. Note: This issue is very
5296 similar to CVE-2015-3193 but must be treated as a separate problem.
5298 This issue was reported to OpenSSL by the OSS-Fuzz project.
5303 * Montgomery multiplication may produce incorrect results
5305 There is a carry propagating bug in the Broadwell-specific Montgomery
5306 multiplication procedure that handles input lengths divisible by, but
5307 longer than 256 bits. Analysis suggests that attacks against RSA, DSA
5308 and DH private keys are impossible. This is because the subroutine in
5309 question is not used in operations with the private key itself and an input
5310 of the attacker's direct choice. Otherwise the bug can manifest itself as
5311 transient authentication and key negotiation failures or reproducible
5312 erroneous outcome of public-key operations with specially crafted input.
5313 Among EC algorithms only Brainpool P-512 curves are affected and one
5314 presumably can attack ECDH key negotiation. Impact was not analyzed in
5315 detail, because pre-requisites for attack are considered unlikely. Namely
5316 multiple clients have to choose the curve in question and the server has to
5317 share the private key among them, neither of which is default behaviour.
5318 Even then only clients that chose the curve will be affected.
5320 This issue was publicly reported as transient failures and was not
5321 initially recognized as a security issue. Thanks to Richard Morgan for
5322 providing reproducible case.
5327 * OpenSSL now fails if it receives an unrecognised record type in TLS1.0
5328 or TLS1.1. Previously this only happened in SSLv3 and TLS1.2. This is to
5329 prevent issues where no progress is being made and the peer continually
5330 sends unrecognised record types, using up resources processing them.
5334 ### Changes between 1.0.2i and 1.0.2j [26 Sep 2016]
5336 * Missing CRL sanity check
5338 A bug fix which included a CRL sanity check was added to OpenSSL 1.1.0
5339 but was omitted from OpenSSL 1.0.2i. As a result any attempt to use
5340 CRLs in OpenSSL 1.0.2i will crash with a null pointer exception.
5342 This issue only affects the OpenSSL 1.0.2i
5347 ### Changes between 1.0.2h and 1.0.2i [22 Sep 2016]
5349 * OCSP Status Request extension unbounded memory growth
5351 A malicious client can send an excessively large OCSP Status Request
5352 extension. If that client continually requests renegotiation, sending a
5353 large OCSP Status Request extension each time, then there will be unbounded
5354 memory growth on the server. This will eventually lead to a Denial Of
5355 Service attack through memory exhaustion. Servers with a default
5356 configuration are vulnerable even if they do not support OCSP. Builds using
5357 the "no-ocsp" build time option are not affected.
5359 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
5364 * In order to mitigate the SWEET32 attack, the DES ciphers were moved from
5367 This issue was reported to OpenSSL Karthikeyan Bhargavan and Gaetan
5373 * OOB write in MDC2_Update()
5375 An overflow can occur in MDC2_Update() either if called directly or
5376 through the EVP_DigestUpdate() function using MDC2. If an attacker
5377 is able to supply very large amounts of input data after a previous
5378 call to EVP_EncryptUpdate() with a partial block then a length check
5379 can overflow resulting in a heap corruption.
5381 The amount of data needed is comparable to SIZE_MAX which is impractical
5384 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
5389 * Malformed SHA512 ticket DoS
5391 If a server uses SHA512 for TLS session ticket HMAC it is vulnerable to a
5392 DoS attack where a malformed ticket will result in an OOB read which will
5395 The use of SHA512 in TLS session tickets is comparatively rare as it requires
5396 a custom server callback and ticket lookup mechanism.
5398 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
5403 * OOB write in BN_bn2dec()
5405 The function BN_bn2dec() does not check the return value of BN_div_word().
5406 This can cause an OOB write if an application uses this function with an
5407 overly large BIGNUM. This could be a problem if an overly large certificate
5408 or CRL is printed out from an untrusted source. TLS is not affected because
5409 record limits will reject an oversized certificate before it is parsed.
5411 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
5416 * OOB read in TS_OBJ_print_bio()
5418 The function TS_OBJ_print_bio() misuses OBJ_obj2txt(): the return value is
5419 the total length the OID text representation would use and not the amount
5420 of data written. This will result in OOB reads when large OIDs are
5423 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
5428 * Pointer arithmetic undefined behaviour
5430 Avoid some undefined pointer arithmetic
5432 A common idiom in the codebase is to check limits in the following manner:
5435 Where "p" points to some malloc'd data of SIZE bytes and
5438 "len" here could be from some externally supplied data (e.g. from a TLS
5441 The rules of C pointer arithmetic are such that "p + len" is only well
5442 defined where len <= SIZE. Therefore the above idiom is actually
5443 undefined behaviour.
5445 For example this could cause problems if some malloc implementation
5446 provides an address for "p" such that "p + len" actually overflows for
5447 values of len that are too big and therefore p + len < limit.
5449 This issue was reported to OpenSSL by Guido Vranken
5454 * Constant time flag not preserved in DSA signing
5456 Operations in the DSA signing algorithm should run in constant time in
5457 order to avoid side channel attacks. A flaw in the OpenSSL DSA
5458 implementation means that a non-constant time codepath is followed for
5459 certain operations. This has been demonstrated through a cache-timing
5460 attack to be sufficient for an attacker to recover the private DSA key.
5462 This issue was reported by César Pereida (Aalto University), Billy Brumley
5463 (Tampere University of Technology), and Yuval Yarom (The University of
5464 Adelaide and NICTA).
5469 * DTLS buffered message DoS
5471 In a DTLS connection where handshake messages are delivered out-of-order
5472 those messages that OpenSSL is not yet ready to process will be buffered
5473 for later use. Under certain circumstances, a flaw in the logic means that
5474 those messages do not get removed from the buffer even though the handshake
5475 has been completed. An attacker could force up to approx. 15 messages to
5476 remain in the buffer when they are no longer required. These messages will
5477 be cleared when the DTLS connection is closed. The default maximum size for
5478 a message is 100k. Therefore, the attacker could force an additional 1500k
5479 to be consumed per connection. By opening many simultaneous connections an
5480 attacker could cause a DoS attack through memory exhaustion.
5482 This issue was reported to OpenSSL by Quan Luo.
5487 * DTLS replay protection DoS
5489 A flaw in the DTLS replay attack protection mechanism means that records
5490 that arrive for future epochs update the replay protection "window" before
5491 the MAC for the record has been validated. This could be exploited by an
5492 attacker by sending a record for the next epoch (which does not have to
5493 decrypt or have a valid MAC), with a very large sequence number. This means
5494 that all subsequent legitimate packets are dropped causing a denial of
5495 service for a specific DTLS connection.
5497 This issue was reported to OpenSSL by the OCAP audit team.
5502 * Certificate message OOB reads
5504 In OpenSSL 1.0.2 and earlier some missing message length checks can result
5505 in OOB reads of up to 2 bytes beyond an allocated buffer. There is a
5506 theoretical DoS risk but this has not been observed in practice on common
5509 The messages affected are client certificate, client certificate request
5510 and server certificate. As a result the attack can only be performed
5511 against a client or a server which enables client authentication.
5513 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
5518 ### Changes between 1.0.2g and 1.0.2h [3 May 2016]
5520 * Prevent padding oracle in AES-NI CBC MAC check
5522 A MITM attacker can use a padding oracle attack to decrypt traffic
5523 when the connection uses an AES CBC cipher and the server support
5526 This issue was introduced as part of the fix for Lucky 13 padding
5527 attack ([CVE-2013-0169]). The padding check was rewritten to be in
5528 constant time by making sure that always the same bytes are read and
5529 compared against either the MAC or padding bytes. But it no longer
5530 checked that there was enough data to have both the MAC and padding
5533 This issue was reported by Juraj Somorovsky using TLS-Attacker.
5537 * Fix EVP_EncodeUpdate overflow
5539 An overflow can occur in the EVP_EncodeUpdate() function which is used for
5540 Base64 encoding of binary data. If an attacker is able to supply very large
5541 amounts of input data then a length check can overflow resulting in a heap
5544 Internally to OpenSSL the EVP_EncodeUpdate() function is primarily used by
5545 the `PEM_write_bio*` family of functions. These are mainly used within the
5546 OpenSSL command line applications, so any application which processes data
5547 from an untrusted source and outputs it as a PEM file should be considered
5548 vulnerable to this issue. User applications that call these APIs directly
5549 with large amounts of untrusted data may also be vulnerable.
5551 This issue was reported by Guido Vranken.
5556 * Fix EVP_EncryptUpdate overflow
5558 An overflow can occur in the EVP_EncryptUpdate() function. If an attacker
5559 is able to supply very large amounts of input data after a previous call to
5560 EVP_EncryptUpdate() with a partial block then a length check can overflow
5561 resulting in a heap corruption. Following an analysis of all OpenSSL
5562 internal usage of the EVP_EncryptUpdate() function all usage is one of two
5563 forms. The first form is where the EVP_EncryptUpdate() call is known to be
5564 the first called function after an EVP_EncryptInit(), and therefore that
5565 specific call must be safe. The second form is where the length passed to
5566 EVP_EncryptUpdate() can be seen from the code to be some small value and
5567 therefore there is no possibility of an overflow. Since all instances are
5568 one of these two forms, it is believed that there can be no overflows in
5569 internal code due to this problem. It should be noted that
5570 EVP_DecryptUpdate() can call EVP_EncryptUpdate() in certain code paths.
5571 Also EVP_CipherUpdate() is a synonym for EVP_EncryptUpdate(). All instances
5572 of these calls have also been analysed too and it is believed there are no
5573 instances in internal usage where an overflow could occur.
5575 This issue was reported by Guido Vranken.
5580 * Prevent ASN.1 BIO excessive memory allocation
5582 When ASN.1 data is read from a BIO using functions such as d2i_CMS_bio()
5583 a short invalid encoding can cause allocation of large amounts of memory
5584 potentially consuming excessive resources or exhausting memory.
5586 Any application parsing untrusted data through d2i BIO functions is
5587 affected. The memory based functions such as d2i_X509() are *not* affected.
5588 Since the memory based functions are used by the TLS library, TLS
5589 applications are not affected.
5591 This issue was reported by Brian Carpenter.
5598 ASN1 Strings that are over 1024 bytes can cause an overread in applications
5599 using the X509_NAME_oneline() function on EBCDIC systems. This could result
5600 in arbitrary stack data being returned in the buffer.
5602 This issue was reported by Guido Vranken.
5607 * Modify behavior of ALPN to invoke callback after SNI/servername
5608 callback, such that updates to the SSL_CTX affect ALPN.
5612 * Remove LOW from the DEFAULT cipher list. This removes singles DES from the
5617 * Only remove the SSLv2 methods with the no-ssl2-method option. When the
5618 methods are enabled and ssl2 is disabled the methods return NULL.
5622 ### Changes between 1.0.2f and 1.0.2g [1 Mar 2016]
5624 * Disable weak ciphers in SSLv3 and up in default builds of OpenSSL.
5625 Builds that are not configured with "enable-weak-ssl-ciphers" will not
5626 provide any "EXPORT" or "LOW" strength ciphers.
5630 * Disable SSLv2 default build, default negotiation and weak ciphers. SSLv2
5631 is by default disabled at build-time. Builds that are not configured with
5632 "enable-ssl2" will not support SSLv2. Even if "enable-ssl2" is used,
5633 users who want to negotiate SSLv2 via the version-flexible SSLv23_method()
5634 will need to explicitly call either of:
5636 SSL_CTX_clear_options(ctx, SSL_OP_NO_SSLv2);
5638 SSL_clear_options(ssl, SSL_OP_NO_SSLv2);
5640 as appropriate. Even if either of those is used, or the application
5641 explicitly uses the version-specific SSLv2_method() or its client and
5642 server variants, SSLv2 ciphers vulnerable to exhaustive search key
5643 recovery have been removed. Specifically, the SSLv2 40-bit EXPORT
5644 ciphers, and SSLv2 56-bit DES are no longer available.
5649 * Fix a double-free in DSA code
5651 A double free bug was discovered when OpenSSL parses malformed DSA private
5652 keys and could lead to a DoS attack or memory corruption for applications
5653 that receive DSA private keys from untrusted sources. This scenario is
5656 This issue was reported to OpenSSL by Adam Langley(Google/BoringSSL) using
5662 * Disable SRP fake user seed to address a server memory leak.
5664 Add a new method SRP_VBASE_get1_by_user that handles the seed properly.
5666 SRP_VBASE_get_by_user had inconsistent memory management behaviour.
5667 In order to fix an unavoidable memory leak, SRP_VBASE_get_by_user
5668 was changed to ignore the "fake user" SRP seed, even if the seed
5671 Users should use SRP_VBASE_get1_by_user instead. Note that in
5672 SRP_VBASE_get1_by_user, caller must free the returned value. Note
5673 also that even though configuring the SRP seed attempts to hide
5674 invalid usernames by continuing the handshake with fake
5675 credentials, this behaviour is not constant time and no strong
5676 guarantees are made that the handshake is indistinguishable from
5677 that of a valid user.
5682 * Fix BN_hex2bn/BN_dec2bn NULL pointer deref/heap corruption
5684 In the BN_hex2bn function the number of hex digits is calculated using an
5685 int value `i`. Later `bn_expand` is called with a value of `i * 4`. For
5686 large values of `i` this can result in `bn_expand` not allocating any
5687 memory because `i * 4` is negative. This can leave the internal BIGNUM data
5688 field as NULL leading to a subsequent NULL ptr deref. For very large values
5689 of `i`, the calculation `i * 4` could be a positive value smaller than `i`.
5690 In this case memory is allocated to the internal BIGNUM data field, but it
5691 is insufficiently sized leading to heap corruption. A similar issue exists
5692 in BN_dec2bn. This could have security consequences if BN_hex2bn/BN_dec2bn
5693 is ever called by user applications with very large untrusted hex/dec data.
5694 This is anticipated to be a rare occurrence.
5696 All OpenSSL internal usage of these functions use data that is not expected
5697 to be untrusted, e.g. config file data or application command line
5698 arguments. If user developed applications generate config file data based
5699 on untrusted data then it is possible that this could also lead to security
5700 consequences. This is also anticipated to be rare.
5702 This issue was reported to OpenSSL by Guido Vranken.
5707 * Fix memory issues in `BIO_*printf` functions
5709 The internal `fmtstr` function used in processing a "%s" format string in
5710 the `BIO_*printf` functions could overflow while calculating the length of a
5711 string and cause an OOB read when printing very long strings.
5713 Additionally the internal `doapr_outch` function can attempt to write to an
5714 OOB memory location (at an offset from the NULL pointer) in the event of a
5715 memory allocation failure. In 1.0.2 and below this could be caused where
5716 the size of a buffer to be allocated is greater than INT_MAX. E.g. this
5717 could be in processing a very long "%s" format string. Memory leaks can
5720 The first issue may mask the second issue dependent on compiler behaviour.
5721 These problems could enable attacks where large amounts of untrusted data
5722 is passed to the `BIO_*printf` functions. If applications use these functions
5723 in this way then they could be vulnerable. OpenSSL itself uses these
5724 functions when printing out human-readable dumps of ASN.1 data. Therefore
5725 applications that print this data could be vulnerable if the data is from
5726 untrusted sources. OpenSSL command line applications could also be
5727 vulnerable where they print out ASN.1 data, or if untrusted data is passed
5728 as command line arguments.
5730 Libssl is not considered directly vulnerable. Additionally certificates etc
5731 received via remote connections via libssl are also unlikely to be able to
5732 trigger these issues because of message size limits enforced within libssl.
5734 This issue was reported to OpenSSL Guido Vranken.
5739 * Side channel attack on modular exponentiation
5741 A side-channel attack was found which makes use of cache-bank conflicts on
5742 the Intel Sandy-Bridge microarchitecture which could lead to the recovery
5743 of RSA keys. The ability to exploit this issue is limited as it relies on
5744 an attacker who has control of code in a thread running on the same
5745 hyper-threaded core as the victim thread which is performing decryptions.
5747 This issue was reported to OpenSSL by Yuval Yarom, The University of
5748 Adelaide and NICTA, Daniel Genkin, Technion and Tel Aviv University, and
5749 Nadia Heninger, University of Pennsylvania with more information at
5750 <http://cachebleed.info>.
5755 * Change the `req` command to generate a 2048-bit RSA/DSA key by default,
5756 if no keysize is specified with default_bits. This fixes an
5757 omission in an earlier change that changed all RSA/DSA key generation
5758 commands to use 2048 bits by default.
5762 ### Changes between 1.0.2e and 1.0.2f [28 Jan 2016]
5764 * DH small subgroups
5766 Historically OpenSSL only ever generated DH parameters based on "safe"
5767 primes. More recently (in version 1.0.2) support was provided for
5768 generating X9.42 style parameter files such as those required for RFC 5114
5769 support. The primes used in such files may not be "safe". Where an
5770 application is using DH configured with parameters based on primes that are
5771 not "safe" then an attacker could use this fact to find a peer's private
5772 DH exponent. This attack requires that the attacker complete multiple
5773 handshakes in which the peer uses the same private DH exponent. For example
5774 this could be used to discover a TLS server's private DH exponent if it's
5775 reusing the private DH exponent or it's using a static DH ciphersuite.
5777 OpenSSL provides the option SSL_OP_SINGLE_DH_USE for ephemeral DH (DHE) in
5778 TLS. It is not on by default. If the option is not set then the server
5779 reuses the same private DH exponent for the life of the server process and
5780 would be vulnerable to this attack. It is believed that many popular
5781 applications do set this option and would therefore not be at risk.
5783 The fix for this issue adds an additional check where a "q" parameter is
5784 available (as is the case in X9.42 based parameters). This detects the
5785 only known attack, and is the only possible defense for static DH
5786 ciphersuites. This could have some performance impact.
5788 Additionally the SSL_OP_SINGLE_DH_USE option has been switched on by
5789 default and cannot be disabled. This could have some performance impact.
5791 This issue was reported to OpenSSL by Antonio Sanso (Adobe).
5796 * SSLv2 doesn't block disabled ciphers
5798 A malicious client can negotiate SSLv2 ciphers that have been disabled on
5799 the server and complete SSLv2 handshakes even if all SSLv2 ciphers have
5800 been disabled, provided that the SSLv2 protocol was not also disabled via
5803 This issue was reported to OpenSSL on 26th December 2015 by Nimrod Aviram
5804 and Sebastian Schinzel.
5809 ### Changes between 1.0.2d and 1.0.2e [3 Dec 2015]
5811 * BN_mod_exp may produce incorrect results on x86_64
5813 There is a carry propagating bug in the x86_64 Montgomery squaring
5814 procedure. No EC algorithms are affected. Analysis suggests that attacks
5815 against RSA and DSA as a result of this defect would be very difficult to
5816 perform and are not believed likely. Attacks against DH are considered just
5817 feasible (although very difficult) because most of the work necessary to
5818 deduce information about a private key may be performed offline. The amount
5819 of resources required for such an attack would be very significant and
5820 likely only accessible to a limited number of attackers. An attacker would
5821 additionally need online access to an unpatched system using the target
5822 private key in a scenario with persistent DH parameters and a private
5823 key that is shared between multiple clients. For example this can occur by
5824 default in OpenSSL DHE based SSL/TLS ciphersuites.
5826 This issue was reported to OpenSSL by Hanno Böck.
5831 * Certificate verify crash with missing PSS parameter
5833 The signature verification routines will crash with a NULL pointer
5834 dereference if presented with an ASN.1 signature using the RSA PSS
5835 algorithm and absent mask generation function parameter. Since these
5836 routines are used to verify certificate signature algorithms this can be
5837 used to crash any certificate verification operation and exploited in a
5838 DoS attack. Any application which performs certificate verification is
5839 vulnerable including OpenSSL clients and servers which enable client
5842 This issue was reported to OpenSSL by Loïc Jonas Etienne (Qnective AG).
5847 * X509_ATTRIBUTE memory leak
5849 When presented with a malformed X509_ATTRIBUTE structure OpenSSL will leak
5850 memory. This structure is used by the PKCS#7 and CMS routines so any
5851 application which reads PKCS#7 or CMS data from untrusted sources is
5852 affected. SSL/TLS is not affected.
5854 This issue was reported to OpenSSL by Adam Langley (Google/BoringSSL) using
5860 * Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
5861 This changes the decoding behaviour for some invalid messages,
5862 though the change is mostly in the more lenient direction, and
5863 legacy behaviour is preserved as much as possible.
5867 * In DSA_generate_parameters_ex, if the provided seed is too short,
5870 *Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>*
5872 ### Changes between 1.0.2c and 1.0.2d [9 Jul 2015]
5874 * Alternate chains certificate forgery
5876 During certificate verification, OpenSSL will attempt to find an
5877 alternative certificate chain if the first attempt to build such a chain
5878 fails. An error in the implementation of this logic can mean that an
5879 attacker could cause certain checks on untrusted certificates to be
5880 bypassed, such as the CA flag, enabling them to use a valid leaf
5881 certificate to act as a CA and "issue" an invalid certificate.
5883 This issue was reported to OpenSSL by Adam Langley/David Benjamin
5888 ### Changes between 1.0.2b and 1.0.2c [12 Jun 2015]
5890 * Fix HMAC ABI incompatibility. The previous version introduced an ABI
5891 incompatibility in the handling of HMAC. The previous ABI has now been
5896 ### Changes between 1.0.2a and 1.0.2b [11 Jun 2015]
5898 * Malformed ECParameters causes infinite loop
5900 When processing an ECParameters structure OpenSSL enters an infinite loop
5901 if the curve specified is over a specially malformed binary polynomial
5904 This can be used to perform denial of service against any
5905 system which processes public keys, certificate requests or
5906 certificates. This includes TLS clients and TLS servers with
5907 client authentication enabled.
5909 This issue was reported to OpenSSL by Joseph Barr-Pixton.
5914 * Exploitable out-of-bounds read in X509_cmp_time
5916 X509_cmp_time does not properly check the length of the ASN1_TIME
5917 string and can read a few bytes out of bounds. In addition,
5918 X509_cmp_time accepts an arbitrary number of fractional seconds in the
5921 An attacker can use this to craft malformed certificates and CRLs of
5922 various sizes and potentially cause a segmentation fault, resulting in
5923 a DoS on applications that verify certificates or CRLs. TLS clients
5924 that verify CRLs are affected. TLS clients and servers with client
5925 authentication enabled may be affected if they use custom verification
5928 This issue was reported to OpenSSL by Robert Swiecki (Google), and
5929 independently by Hanno Böck.
5934 * PKCS7 crash with missing EnvelopedContent
5936 The PKCS#7 parsing code does not handle missing inner EncryptedContent
5937 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs
5938 with missing content and trigger a NULL pointer dereference on parsing.
5940 Applications that decrypt PKCS#7 data or otherwise parse PKCS#7
5941 structures from untrusted sources are affected. OpenSSL clients and
5942 servers are not affected.
5944 This issue was reported to OpenSSL by Michal Zalewski (Google).
5949 * CMS verify infinite loop with unknown hash function
5951 When verifying a signedData message the CMS code can enter an infinite loop
5952 if presented with an unknown hash function OID. This can be used to perform
5953 denial of service against any system which verifies signedData messages using
5955 This issue was reported to OpenSSL by Johannes Bauer.
5960 * Race condition handling NewSessionTicket
5962 If a NewSessionTicket is received by a multi-threaded client when attempting to
5963 reuse a previous ticket then a race condition can occur potentially leading to
5964 a double free of the ticket data.
5969 * Only support 256-bit or stronger elliptic curves with the
5970 'ecdh_auto' setting (server) or by default (client). Of supported
5971 curves, prefer P-256 (both).
5975 ### Changes between 1.0.2 and 1.0.2a [19 Mar 2015]
5977 * ClientHello sigalgs DoS fix
5979 If a client connects to an OpenSSL 1.0.2 server and renegotiates with an
5980 invalid signature algorithms extension a NULL pointer dereference will
5981 occur. This can be exploited in a DoS attack against the server.
5983 This issue was was reported to OpenSSL by David Ramos of Stanford
5987 *Stephen Henson and Matt Caswell*
5989 * Multiblock corrupted pointer fix
5991 OpenSSL 1.0.2 introduced the "multiblock" performance improvement. This
5992 feature only applies on 64 bit x86 architecture platforms that support AES
5993 NI instructions. A defect in the implementation of "multiblock" can cause
5994 OpenSSL's internal write buffer to become incorrectly set to NULL when
5995 using non-blocking IO. Typically, when the user application is using a
5996 socket BIO for writing, this will only result in a failed connection.
5997 However if some other BIO is used then it is likely that a segmentation
5998 fault will be triggered, thus enabling a potential DoS attack.
6000 This issue was reported to OpenSSL by Daniel Danner and Rainer Mueller.
6005 * Segmentation fault in DTLSv1_listen fix
6007 The DTLSv1_listen function is intended to be stateless and processes the
6008 initial ClientHello from many peers. It is common for user code to loop
6009 over the call to DTLSv1_listen until a valid ClientHello is received with
6010 an associated cookie. A defect in the implementation of DTLSv1_listen means
6011 that state is preserved in the SSL object from one invocation to the next
6012 that can lead to a segmentation fault. Errors processing the initial
6013 ClientHello can trigger this scenario. An example of such an error could be
6014 that a DTLS1.0 only client is attempting to connect to a DTLS1.2 only
6017 This issue was reported to OpenSSL by Per Allansson.
6022 * Segmentation fault in ASN1_TYPE_cmp fix
6024 The function ASN1_TYPE_cmp will crash with an invalid read if an attempt is
6025 made to compare ASN.1 boolean types. Since ASN1_TYPE_cmp is used to check
6026 certificate signature algorithm consistency this can be used to crash any
6027 certificate verification operation and exploited in a DoS attack. Any
6028 application which performs certificate verification is vulnerable including
6029 OpenSSL clients and servers which enable client authentication.
6034 * Segmentation fault for invalid PSS parameters fix
6036 The signature verification routines will crash with a NULL pointer
6037 dereference if presented with an ASN.1 signature using the RSA PSS
6038 algorithm and invalid parameters. Since these routines are used to verify
6039 certificate signature algorithms this can be used to crash any
6040 certificate verification operation and exploited in a DoS attack. Any
6041 application which performs certificate verification is vulnerable including
6042 OpenSSL clients and servers which enable client authentication.
6044 This issue was was reported to OpenSSL by Brian Carpenter.
6049 * ASN.1 structure reuse memory corruption fix
6051 Reusing a structure in ASN.1 parsing may allow an attacker to cause
6052 memory corruption via an invalid write. Such reuse is and has been
6053 strongly discouraged and is believed to be rare.
6055 Applications that parse structures containing CHOICE or ANY DEFINED BY
6056 components may be affected. Certificate parsing (d2i_X509 and related
6057 functions) are however not affected. OpenSSL clients and servers are
6063 * PKCS7 NULL pointer dereferences fix
6065 The PKCS#7 parsing code does not handle missing outer ContentInfo
6066 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs with
6067 missing content and trigger a NULL pointer dereference on parsing.
6069 Applications that verify PKCS#7 signatures, decrypt PKCS#7 data or
6070 otherwise parse PKCS#7 structures from untrusted sources are
6071 affected. OpenSSL clients and servers are not affected.
6073 This issue was reported to OpenSSL by Michal Zalewski (Google).
6078 * DoS via reachable assert in SSLv2 servers fix
6080 A malicious client can trigger an OPENSSL_assert (i.e., an abort) in
6081 servers that both support SSLv2 and enable export cipher suites by sending
6082 a specially crafted SSLv2 CLIENT-MASTER-KEY message.
6084 This issue was discovered by Sean Burford (Google) and Emilia Käsper
6085 (OpenSSL development team).
6090 * Empty CKE with client auth and DHE fix
6092 If client auth is used then a server can seg fault in the event of a DHE
6093 ciphersuite being selected and a zero length ClientKeyExchange message
6094 being sent by the client. This could be exploited in a DoS attack.
6099 * Handshake with unseeded PRNG fix
6101 Under certain conditions an OpenSSL 1.0.2 client can complete a handshake
6102 with an unseeded PRNG. The conditions are:
6103 - The client is on a platform where the PRNG has not been seeded
6104 automatically, and the user has not seeded manually
6105 - A protocol specific client method version has been used (i.e. not
6106 SSL_client_methodv23)
6107 - A ciphersuite is used that does not require additional random data from
6108 the PRNG beyond the initial ClientHello client random (e.g. PSK-RC4-SHA).
6110 If the handshake succeeds then the client random that has been used will
6111 have been generated from a PRNG with insufficient entropy and therefore the
6112 output may be predictable.
6114 For example using the following command with an unseeded openssl will
6115 succeed on an unpatched platform:
6117 openssl s_client -psk 1a2b3c4d -tls1_2 -cipher PSK-RC4-SHA
6122 * Use After Free following d2i_ECPrivatekey error fix
6124 A malformed EC private key file consumed via the d2i_ECPrivateKey function
6125 could cause a use after free condition. This, in turn, could cause a double
6126 free in several private key parsing functions (such as d2i_PrivateKey
6127 or EVP_PKCS82PKEY) and could lead to a DoS attack or memory corruption
6128 for applications that receive EC private keys from untrusted
6129 sources. This scenario is considered rare.
6131 This issue was discovered by the BoringSSL project and fixed in their
6137 * X509_to_X509_REQ NULL pointer deref fix
6139 The function X509_to_X509_REQ will crash with a NULL pointer dereference if
6140 the certificate key is invalid. This function is rarely used in practice.
6142 This issue was discovered by Brian Carpenter.
6147 * Removed the export ciphers from the DEFAULT ciphers
6151 ### Changes between 1.0.1l and 1.0.2 [22 Jan 2015]
6153 * Facilitate "universal" ARM builds targeting range of ARM ISAs, e.g.
6154 ARMv5 through ARMv8, as opposite to "locking" it to single one.
6155 So far those who have to target multiple platforms would compromise
6156 and argue that binary targeting say ARMv5 would still execute on
6157 ARMv8. "Universal" build resolves this compromise by providing
6158 near-optimal performance even on newer platforms.
6162 * Accelerated NIST P-256 elliptic curve implementation for x86_64
6163 (other platforms pending).
6165 *Shay Gueron & Vlad Krasnov (Intel Corp), Andy Polyakov*
6167 * Add support for the SignedCertificateTimestampList certificate and
6168 OCSP response extensions from RFC6962.
6172 * Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
6173 for corner cases. (Certain input points at infinity could lead to
6174 bogus results, with non-infinity inputs mapped to infinity too.)
6178 * Initial support for PowerISA 2.0.7, first implemented in POWER8.
6179 This covers AES, SHA256/512 and GHASH. "Initial" means that most
6180 common cases are optimized and there still is room for further
6181 improvements. Vector Permutation AES for Altivec is also added.
6185 * Add support for little-endian ppc64 Linux target.
6187 *Marcelo Cerri (IBM)*
6189 * Initial support for AMRv8 ISA crypto extensions. This covers AES,
6190 SHA1, SHA256 and GHASH. "Initial" means that most common cases
6191 are optimized and there still is room for further improvements.
6192 Both 32- and 64-bit modes are supported.
6194 *Andy Polyakov, Ard Biesheuvel (Linaro)*
6196 * Improved ARMv7 NEON support.
6200 * Support for SPARC Architecture 2011 crypto extensions, first
6201 implemented in SPARC T4. This covers AES, DES, Camellia, SHA1,
6202 SHA256/512, MD5, GHASH and modular exponentiation.
6204 *Andy Polyakov, David Miller*
6206 * Accelerated modular exponentiation for Intel processors, a.k.a.
6209 *Shay Gueron & Vlad Krasnov (Intel Corp)*
6211 * Support for new and upcoming Intel processors, including AVX2,
6212 BMI and SHA ISA extensions. This includes additional "stitched"
6213 implementations, AESNI-SHA256 and GCM, and multi-buffer support
6216 This work was sponsored by Intel Corp.
6220 * Support for DTLS 1.2. This adds two sets of DTLS methods: DTLS_*_method()
6221 supports both DTLS 1.2 and 1.0 and should use whatever version the peer
6222 supports and DTLSv1_2_*_method() which supports DTLS 1.2 only.
6226 * Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
6227 this fixes a limitation in previous versions of OpenSSL.
6231 * Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
6232 MGF1 digest and OAEP label.
6236 * Add EVP support for key wrapping algorithms, to avoid problems with
6237 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
6238 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
6239 algorithms and include tests cases.
6243 * Add functions to allocate and set the fields of an ECDSA_METHOD
6246 *Douglas E. Engert, Steve Henson*
6248 * New functions OPENSSL_gmtime_diff and ASN1_TIME_diff to find the
6249 difference in days and seconds between two tm or ASN1_TIME structures.
6253 * Add -rev test option to s_server to just reverse order of characters
6254 received by client and send back to server. Also prints an abbreviated
6255 summary of the connection parameters.
6259 * New option -brief for s_client and s_server to print out a brief summary
6260 of connection parameters.
6264 * Add callbacks for arbitrary TLS extensions.
6266 *Trevor Perrin <trevp@trevp.net> and Ben Laurie*
6268 * New option -crl_download in several openssl utilities to download CRLs
6269 from CRLDP extension in certificates.
6273 * New options -CRL and -CRLform for s_client and s_server for CRLs.
6277 * New function X509_CRL_diff to generate a delta CRL from the difference
6278 of two full CRLs. Add support to "crl" utility.
6282 * New functions to set lookup_crls function and to retrieve
6283 X509_STORE from X509_STORE_CTX.
6287 * Print out deprecated issuer and subject unique ID fields in
6292 * Extend OCSP I/O functions so they can be used for simple general purpose
6293 HTTP as well as OCSP. New wrapper function which can be used to download
6294 CRLs using the OCSP API.
6298 * Delegate command line handling in s_client/s_server to SSL_CONF APIs.
6302 * `SSL_CONF*` functions. These provide a common framework for application
6303 configuration using configuration files or command lines.
6307 * SSL/TLS tracing code. This parses out SSL/TLS records using the
6308 message callback and prints the results. Needs compile time option
6309 "enable-ssl-trace". New options to s_client and s_server to enable
6314 * New ctrl and macro to retrieve supported points extensions.
6315 Print out extension in s_server and s_client.
6319 * New functions to retrieve certificate signature and signature
6324 * Add functions to retrieve and manipulate the raw cipherlist sent by a
6329 * New Suite B modes for TLS code. These use and enforce the requirements
6330 of RFC6460: restrict ciphersuites, only permit Suite B algorithms and
6331 only use Suite B curves. The Suite B modes can be set by using the
6332 strings "SUITEB128", "SUITEB192" or "SUITEB128ONLY" for the cipherstring.
6336 * New chain verification flags for Suite B levels of security. Check
6337 algorithms are acceptable when flags are set in X509_verify_cert.
6341 * Make tls1_check_chain return a set of flags indicating checks passed
6342 by a certificate chain. Add additional tests to handle client
6343 certificates: checks for matching certificate type and issuer name
6348 * If an attempt is made to use a signature algorithm not in the peer
6349 preference list abort the handshake. If client has no suitable
6350 signature algorithms in response to a certificate request do not
6351 use the certificate.
6355 * If server EC tmp key is not in client preference list abort handshake.
6359 * Add support for certificate stores in CERT structure. This makes it
6360 possible to have different stores per SSL structure or one store in
6361 the parent SSL_CTX. Include distinct stores for certificate chain
6362 verification and chain building. New ctrl SSL_CTRL_BUILD_CERT_CHAIN
6363 to build and store a certificate chain in CERT structure: returning
6364 an error if the chain cannot be built: this will allow applications
6365 to test if a chain is correctly configured.
6367 Note: if the CERT based stores are not set then the parent SSL_CTX
6368 store is used to retain compatibility with existing behaviour.
6372 * New function ssl_set_client_disabled to set a ciphersuite disabled
6373 mask based on the current session, check mask when sending client
6374 hello and checking the requested ciphersuite.
6378 * New ctrls to retrieve and set certificate types in a certificate
6379 request message. Print out received values in s_client. If certificate
6380 types is not set with custom values set sensible values based on
6381 supported signature algorithms.
6385 * Support for distinct client and server supported signature algorithms.
6389 * Add certificate callback. If set this is called whenever a certificate
6390 is required by client or server. An application can decide which
6391 certificate chain to present based on arbitrary criteria: for example
6392 supported signature algorithms. Add very simple example to s_server.
6393 This fixes many of the problems and restrictions of the existing client
6394 certificate callback: for example you can now clear an existing
6395 certificate and specify the whole chain.
6399 * Add new "valid_flags" field to CERT_PKEY structure which determines what
6400 the certificate can be used for (if anything). Set valid_flags field
6401 in new tls1_check_chain function. Simplify ssl_set_cert_masks which used
6402 to have similar checks in it.
6404 Add new "cert_flags" field to CERT structure and include a "strict mode".
6405 This enforces some TLS certificate requirements (such as only permitting
6406 certificate signature algorithms contained in the supported algorithms
6407 extension) which some implementations ignore: this option should be used
6408 with caution as it could cause interoperability issues.
6412 * Update and tidy signature algorithm extension processing. Work out
6413 shared signature algorithms based on preferences and peer algorithms
6414 and print them out in s_client and s_server. Abort handshake if no
6415 shared signature algorithms.
6419 * Add new functions to allow customised supported signature algorithms
6420 for SSL and SSL_CTX structures. Add options to s_client and s_server
6425 * New function SSL_certs_clear() to delete all references to certificates
6426 from an SSL structure. Before this once a certificate had been added
6427 it couldn't be removed.
6431 * Integrate hostname, email address and IP address checking with certificate
6432 verification. New verify options supporting checking in openssl utility.
6436 * Fixes and wildcard matching support to hostname and email checking
6437 functions. Add manual page.
6439 *Florian Weimer (Red Hat Product Security Team)*
6441 * New functions to check a hostname email or IP address against a
6442 certificate. Add options x509 utility to print results of checks against
6447 * Fix OCSP checking.
6449 *Rob Stradling <rob.stradling@comodo.com> and Ben Laurie*
6451 * Initial experimental support for explicitly trusted non-root CAs.
6452 OpenSSL still tries to build a complete chain to a root but if an
6453 intermediate CA has a trust setting included that is used. The first
6454 setting is used: whether to trust (e.g., -addtrust option to the x509
6459 * Add -trusted_first option which attempts to find certificates in the
6460 trusted store even if an untrusted chain is also supplied.
6464 * MIPS assembly pack updates: support for MIPS32r2 and SmartMIPS ASE,
6465 platform support for Linux and Android.
6469 * Support for linux-x32, ILP32 environment in x86_64 framework.
6473 * Experimental multi-implementation support for FIPS capable OpenSSL.
6474 When in FIPS mode the approved implementations are used as normal,
6475 when not in FIPS mode the internal unapproved versions are used instead.
6476 This means that the FIPS capable OpenSSL isn't forced to use the
6477 (often lower performance) FIPS implementations outside FIPS mode.
6481 * Transparently support X9.42 DH parameters when calling
6482 PEM_read_bio_DHparameters. This means existing applications can handle
6483 the new parameter format automatically.
6487 * Initial experimental support for X9.42 DH parameter format: mainly
6488 to support use of 'q' parameter for RFC5114 parameters.
6492 * Add DH parameters from RFC5114 including test data to dhtest.
6496 * Support for automatic EC temporary key parameter selection. If enabled
6497 the most preferred EC parameters are automatically used instead of
6498 hardcoded fixed parameters. Now a server just has to call:
6499 SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically
6500 support ECDH and use the most appropriate parameters.
6504 * Enhance and tidy EC curve and point format TLS extension code. Use
6505 static structures instead of allocation if default values are used.
6506 New ctrls to set curves we wish to support and to retrieve shared curves.
6507 Print out shared curves in s_server. New options to s_server and s_client
6508 to set list of supported curves.
6512 * New ctrls to retrieve supported signature algorithms and
6513 supported curve values as an array of NIDs. Extend openssl utility
6514 to print out received values.
6518 * Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert
6519 between NIDs and the more common NIST names such as "P-256". Enhance
6520 ecparam utility and ECC method to recognise the NIST names for curves.
6524 * Enhance SSL/TLS certificate chain handling to support different
6525 chains for each certificate instead of one chain in the parent SSL_CTX.
6529 * Support for fixed DH ciphersuite client authentication: where both
6530 server and client use DH certificates with common parameters.
6534 * Support for fixed DH ciphersuites: those requiring DH server
6539 * New function i2d_re_X509_tbs for re-encoding the TBS portion of
6541 Note: Related 1.0.2-beta specific macros X509_get_cert_info,
6542 X509_CINF_set_modified, X509_CINF_get_issuer, X509_CINF_get_extensions and
6543 X509_CINF_get_signature were reverted post internal team review.
6548 ### Changes between 1.0.1t and 1.0.1u [22 Sep 2016]
6550 * OCSP Status Request extension unbounded memory growth
6552 A malicious client can send an excessively large OCSP Status Request
6553 extension. If that client continually requests renegotiation, sending a
6554 large OCSP Status Request extension each time, then there will be unbounded
6555 memory growth on the server. This will eventually lead to a Denial Of
6556 Service attack through memory exhaustion. Servers with a default
6557 configuration are vulnerable even if they do not support OCSP. Builds using
6558 the "no-ocsp" build time option are not affected.
6560 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
6565 * In order to mitigate the SWEET32 attack, the DES ciphers were moved from
6568 This issue was reported to OpenSSL Karthikeyan Bhargavan and Gaetan
6574 * OOB write in MDC2_Update()
6576 An overflow can occur in MDC2_Update() either if called directly or
6577 through the EVP_DigestUpdate() function using MDC2. If an attacker
6578 is able to supply very large amounts of input data after a previous
6579 call to EVP_EncryptUpdate() with a partial block then a length check
6580 can overflow resulting in a heap corruption.
6582 The amount of data needed is comparable to SIZE_MAX which is impractical
6585 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
6590 * Malformed SHA512 ticket DoS
6592 If a server uses SHA512 for TLS session ticket HMAC it is vulnerable to a
6593 DoS attack where a malformed ticket will result in an OOB read which will
6596 The use of SHA512 in TLS session tickets is comparatively rare as it requires
6597 a custom server callback and ticket lookup mechanism.
6599 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
6604 * OOB write in BN_bn2dec()
6606 The function BN_bn2dec() does not check the return value of BN_div_word().
6607 This can cause an OOB write if an application uses this function with an
6608 overly large BIGNUM. This could be a problem if an overly large certificate
6609 or CRL is printed out from an untrusted source. TLS is not affected because
6610 record limits will reject an oversized certificate before it is parsed.
6612 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
6617 * OOB read in TS_OBJ_print_bio()
6619 The function TS_OBJ_print_bio() misuses OBJ_obj2txt(): the return value is
6620 the total length the OID text representation would use and not the amount
6621 of data written. This will result in OOB reads when large OIDs are
6624 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
6629 * Pointer arithmetic undefined behaviour
6631 Avoid some undefined pointer arithmetic
6633 A common idiom in the codebase is to check limits in the following manner:
6636 Where "p" points to some malloc'd data of SIZE bytes and
6639 "len" here could be from some externally supplied data (e.g. from a TLS
6642 The rules of C pointer arithmetic are such that "p + len" is only well
6643 defined where len <= SIZE. Therefore, the above idiom is actually
6644 undefined behaviour.
6646 For example this could cause problems if some malloc implementation
6647 provides an address for "p" such that "p + len" actually overflows for
6648 values of len that are too big and therefore p + len < limit.
6650 This issue was reported to OpenSSL by Guido Vranken
6655 * Constant time flag not preserved in DSA signing
6657 Operations in the DSA signing algorithm should run in constant time in
6658 order to avoid side channel attacks. A flaw in the OpenSSL DSA
6659 implementation means that a non-constant time codepath is followed for
6660 certain operations. This has been demonstrated through a cache-timing
6661 attack to be sufficient for an attacker to recover the private DSA key.
6663 This issue was reported by César Pereida (Aalto University), Billy Brumley
6664 (Tampere University of Technology), and Yuval Yarom (The University of
6665 Adelaide and NICTA).
6670 * DTLS buffered message DoS
6672 In a DTLS connection where handshake messages are delivered out-of-order
6673 those messages that OpenSSL is not yet ready to process will be buffered
6674 for later use. Under certain circumstances, a flaw in the logic means that
6675 those messages do not get removed from the buffer even though the handshake
6676 has been completed. An attacker could force up to approx. 15 messages to
6677 remain in the buffer when they are no longer required. These messages will
6678 be cleared when the DTLS connection is closed. The default maximum size for
6679 a message is 100k. Therefore, the attacker could force an additional 1500k
6680 to be consumed per connection. By opening many simultaneous connections an
6681 attacker could cause a DoS attack through memory exhaustion.
6683 This issue was reported to OpenSSL by Quan Luo.
6688 * DTLS replay protection DoS
6690 A flaw in the DTLS replay attack protection mechanism means that records
6691 that arrive for future epochs update the replay protection "window" before
6692 the MAC for the record has been validated. This could be exploited by an
6693 attacker by sending a record for the next epoch (which does not have to
6694 decrypt or have a valid MAC), with a very large sequence number. This means
6695 that all subsequent legitimate packets are dropped causing a denial of
6696 service for a specific DTLS connection.
6698 This issue was reported to OpenSSL by the OCAP audit team.
6703 * Certificate message OOB reads
6705 In OpenSSL 1.0.2 and earlier some missing message length checks can result
6706 in OOB reads of up to 2 bytes beyond an allocated buffer. There is a
6707 theoretical DoS risk but this has not been observed in practice on common
6710 The messages affected are client certificate, client certificate request
6711 and server certificate. As a result the attack can only be performed
6712 against a client or a server which enables client authentication.
6714 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
6719 ### Changes between 1.0.1s and 1.0.1t [3 May 2016]
6721 * Prevent padding oracle in AES-NI CBC MAC check
6723 A MITM attacker can use a padding oracle attack to decrypt traffic
6724 when the connection uses an AES CBC cipher and the server support
6727 This issue was introduced as part of the fix for Lucky 13 padding
6728 attack ([CVE-2013-0169]). The padding check was rewritten to be in
6729 constant time by making sure that always the same bytes are read and
6730 compared against either the MAC or padding bytes. But it no longer
6731 checked that there was enough data to have both the MAC and padding
6734 This issue was reported by Juraj Somorovsky using TLS-Attacker.
6739 * Fix EVP_EncodeUpdate overflow
6741 An overflow can occur in the EVP_EncodeUpdate() function which is used for
6742 Base64 encoding of binary data. If an attacker is able to supply very large
6743 amounts of input data then a length check can overflow resulting in a heap
6746 Internally to OpenSSL the EVP_EncodeUpdate() function is primarily used by
6747 the `PEM_write_bio*` family of functions. These are mainly used within the
6748 OpenSSL command line applications, so any application which processes data
6749 from an untrusted source and outputs it as a PEM file should be considered
6750 vulnerable to this issue. User applications that call these APIs directly
6751 with large amounts of untrusted data may also be vulnerable.
6753 This issue was reported by Guido Vranken.
6758 * Fix EVP_EncryptUpdate overflow
6760 An overflow can occur in the EVP_EncryptUpdate() function. If an attacker
6761 is able to supply very large amounts of input data after a previous call to
6762 EVP_EncryptUpdate() with a partial block then a length check can overflow
6763 resulting in a heap corruption. Following an analysis of all OpenSSL
6764 internal usage of the EVP_EncryptUpdate() function all usage is one of two
6765 forms. The first form is where the EVP_EncryptUpdate() call is known to be
6766 the first called function after an EVP_EncryptInit(), and therefore that
6767 specific call must be safe. The second form is where the length passed to
6768 EVP_EncryptUpdate() can be seen from the code to be some small value and
6769 therefore there is no possibility of an overflow. Since all instances are
6770 one of these two forms, it is believed that there can be no overflows in
6771 internal code due to this problem. It should be noted that
6772 EVP_DecryptUpdate() can call EVP_EncryptUpdate() in certain code paths.
6773 Also EVP_CipherUpdate() is a synonym for EVP_EncryptUpdate(). All instances
6774 of these calls have also been analysed too and it is believed there are no
6775 instances in internal usage where an overflow could occur.
6777 This issue was reported by Guido Vranken.
6782 * Prevent ASN.1 BIO excessive memory allocation
6784 When ASN.1 data is read from a BIO using functions such as d2i_CMS_bio()
6785 a short invalid encoding can casuse allocation of large amounts of memory
6786 potentially consuming excessive resources or exhausting memory.
6788 Any application parsing untrusted data through d2i BIO functions is
6789 affected. The memory based functions such as d2i_X509() are *not* affected.
6790 Since the memory based functions are used by the TLS library, TLS
6791 applications are not affected.
6793 This issue was reported by Brian Carpenter.
6800 ASN1 Strings that are over 1024 bytes can cause an overread in applications
6801 using the X509_NAME_oneline() function on EBCDIC systems. This could result
6802 in arbitrary stack data being returned in the buffer.
6804 This issue was reported by Guido Vranken.
6809 * Modify behavior of ALPN to invoke callback after SNI/servername
6810 callback, such that updates to the SSL_CTX affect ALPN.
6814 * Remove LOW from the DEFAULT cipher list. This removes singles DES from the
6819 * Only remove the SSLv2 methods with the no-ssl2-method option. When the
6820 methods are enabled and ssl2 is disabled the methods return NULL.
6824 ### Changes between 1.0.1r and 1.0.1s [1 Mar 2016]
6826 * Disable weak ciphers in SSLv3 and up in default builds of OpenSSL.
6827 Builds that are not configured with "enable-weak-ssl-ciphers" will not
6828 provide any "EXPORT" or "LOW" strength ciphers.
6832 * Disable SSLv2 default build, default negotiation and weak ciphers. SSLv2
6833 is by default disabled at build-time. Builds that are not configured with
6834 "enable-ssl2" will not support SSLv2. Even if "enable-ssl2" is used,
6835 users who want to negotiate SSLv2 via the version-flexible SSLv23_method()
6836 will need to explicitly call either of:
6838 SSL_CTX_clear_options(ctx, SSL_OP_NO_SSLv2);
6840 SSL_clear_options(ssl, SSL_OP_NO_SSLv2);
6842 as appropriate. Even if either of those is used, or the application
6843 explicitly uses the version-specific SSLv2_method() or its client and
6844 server variants, SSLv2 ciphers vulnerable to exhaustive search key
6845 recovery have been removed. Specifically, the SSLv2 40-bit EXPORT
6846 ciphers, and SSLv2 56-bit DES are no longer available.
6851 * Fix a double-free in DSA code
6853 A double free bug was discovered when OpenSSL parses malformed DSA private
6854 keys and could lead to a DoS attack or memory corruption for applications
6855 that receive DSA private keys from untrusted sources. This scenario is
6858 This issue was reported to OpenSSL by Adam Langley(Google/BoringSSL) using
6864 * Disable SRP fake user seed to address a server memory leak.
6866 Add a new method SRP_VBASE_get1_by_user that handles the seed properly.
6868 SRP_VBASE_get_by_user had inconsistent memory management behaviour.
6869 In order to fix an unavoidable memory leak, SRP_VBASE_get_by_user
6870 was changed to ignore the "fake user" SRP seed, even if the seed
6873 Users should use SRP_VBASE_get1_by_user instead. Note that in
6874 SRP_VBASE_get1_by_user, caller must free the returned value. Note
6875 also that even though configuring the SRP seed attempts to hide
6876 invalid usernames by continuing the handshake with fake
6877 credentials, this behaviour is not constant time and no strong
6878 guarantees are made that the handshake is indistinguishable from
6879 that of a valid user.
6884 * Fix BN_hex2bn/BN_dec2bn NULL pointer deref/heap corruption
6886 In the BN_hex2bn function the number of hex digits is calculated using an
6887 int value `i`. Later `bn_expand` is called with a value of `i * 4`. For
6888 large values of `i` this can result in `bn_expand` not allocating any
6889 memory because `i * 4` is negative. This can leave the internal BIGNUM data
6890 field as NULL leading to a subsequent NULL ptr deref. For very large values
6891 of `i`, the calculation `i * 4` could be a positive value smaller than `i`.
6892 In this case memory is allocated to the internal BIGNUM data field, but it
6893 is insufficiently sized leading to heap corruption. A similar issue exists
6894 in BN_dec2bn. This could have security consequences if BN_hex2bn/BN_dec2bn
6895 is ever called by user applications with very large untrusted hex/dec data.
6896 This is anticipated to be a rare occurrence.
6898 All OpenSSL internal usage of these functions use data that is not expected
6899 to be untrusted, e.g. config file data or application command line
6900 arguments. If user developed applications generate config file data based
6901 on untrusted data then it is possible that this could also lead to security
6902 consequences. This is also anticipated to be rare.
6904 This issue was reported to OpenSSL by Guido Vranken.
6909 * Fix memory issues in `BIO_*printf` functions
6911 The internal `fmtstr` function used in processing a "%s" format string in
6912 the `BIO_*printf` functions could overflow while calculating the length of a
6913 string and cause an OOB read when printing very long strings.
6915 Additionally the internal `doapr_outch` function can attempt to write to an
6916 OOB memory location (at an offset from the NULL pointer) in the event of a
6917 memory allocation failure. In 1.0.2 and below this could be caused where
6918 the size of a buffer to be allocated is greater than INT_MAX. E.g. this
6919 could be in processing a very long "%s" format string. Memory leaks can
6922 The first issue may mask the second issue dependent on compiler behaviour.
6923 These problems could enable attacks where large amounts of untrusted data
6924 is passed to the `BIO_*printf` functions. If applications use these functions
6925 in this way then they could be vulnerable. OpenSSL itself uses these
6926 functions when printing out human-readable dumps of ASN.1 data. Therefore
6927 applications that print this data could be vulnerable if the data is from
6928 untrusted sources. OpenSSL command line applications could also be
6929 vulnerable where they print out ASN.1 data, or if untrusted data is passed
6930 as command line arguments.
6932 Libssl is not considered directly vulnerable. Additionally certificates etc
6933 received via remote connections via libssl are also unlikely to be able to
6934 trigger these issues because of message size limits enforced within libssl.
6936 This issue was reported to OpenSSL Guido Vranken.
6941 * Side channel attack on modular exponentiation
6943 A side-channel attack was found which makes use of cache-bank conflicts on
6944 the Intel Sandy-Bridge microarchitecture which could lead to the recovery
6945 of RSA keys. The ability to exploit this issue is limited as it relies on
6946 an attacker who has control of code in a thread running on the same
6947 hyper-threaded core as the victim thread which is performing decryptions.
6949 This issue was reported to OpenSSL by Yuval Yarom, The University of
6950 Adelaide and NICTA, Daniel Genkin, Technion and Tel Aviv University, and
6951 Nadia Heninger, University of Pennsylvania with more information at
6952 <http://cachebleed.info>.
6957 * Change the req command to generate a 2048-bit RSA/DSA key by default,
6958 if no keysize is specified with default_bits. This fixes an
6959 omission in an earlier change that changed all RSA/DSA key generation
6960 commands to use 2048 bits by default.
6964 ### Changes between 1.0.1q and 1.0.1r [28 Jan 2016]
6966 * Protection for DH small subgroup attacks
6968 As a precautionary measure the SSL_OP_SINGLE_DH_USE option has been
6969 switched on by default and cannot be disabled. This could have some
6974 * SSLv2 doesn't block disabled ciphers
6976 A malicious client can negotiate SSLv2 ciphers that have been disabled on
6977 the server and complete SSLv2 handshakes even if all SSLv2 ciphers have
6978 been disabled, provided that the SSLv2 protocol was not also disabled via
6981 This issue was reported to OpenSSL on 26th December 2015 by Nimrod Aviram
6982 and Sebastian Schinzel.
6987 * Reject DH handshakes with parameters shorter than 1024 bits.
6991 ### Changes between 1.0.1p and 1.0.1q [3 Dec 2015]
6993 * Certificate verify crash with missing PSS parameter
6995 The signature verification routines will crash with a NULL pointer
6996 dereference if presented with an ASN.1 signature using the RSA PSS
6997 algorithm and absent mask generation function parameter. Since these
6998 routines are used to verify certificate signature algorithms this can be
6999 used to crash any certificate verification operation and exploited in a
7000 DoS attack. Any application which performs certificate verification is
7001 vulnerable including OpenSSL clients and servers which enable client
7004 This issue was reported to OpenSSL by Loïc Jonas Etienne (Qnective AG).
7009 * X509_ATTRIBUTE memory leak
7011 When presented with a malformed X509_ATTRIBUTE structure OpenSSL will leak
7012 memory. This structure is used by the PKCS#7 and CMS routines so any
7013 application which reads PKCS#7 or CMS data from untrusted sources is
7014 affected. SSL/TLS is not affected.
7016 This issue was reported to OpenSSL by Adam Langley (Google/BoringSSL) using
7022 * Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
7023 This changes the decoding behaviour for some invalid messages,
7024 though the change is mostly in the more lenient direction, and
7025 legacy behaviour is preserved as much as possible.
7029 * In DSA_generate_parameters_ex, if the provided seed is too short,
7030 use a random seed, as already documented.
7032 *Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>*
7034 ### Changes between 1.0.1o and 1.0.1p [9 Jul 2015]
7036 * Alternate chains certificate forgery
7038 During certificate verfification, OpenSSL will attempt to find an
7039 alternative certificate chain if the first attempt to build such a chain
7040 fails. An error in the implementation of this logic can mean that an
7041 attacker could cause certain checks on untrusted certificates to be
7042 bypassed, such as the CA flag, enabling them to use a valid leaf
7043 certificate to act as a CA and "issue" an invalid certificate.
7045 This issue was reported to OpenSSL by Adam Langley/David Benjamin
7051 * Race condition handling PSK identify hint
7053 If PSK identity hints are received by a multi-threaded client then
7054 the values are wrongly updated in the parent SSL_CTX structure. This can
7055 result in a race condition potentially leading to a double free of the
7061 ### Changes between 1.0.1n and 1.0.1o [12 Jun 2015]
7063 * Fix HMAC ABI incompatibility. The previous version introduced an ABI
7064 incompatibility in the handling of HMAC. The previous ABI has now been
7067 ### Changes between 1.0.1m and 1.0.1n [11 Jun 2015]
7069 * Malformed ECParameters causes infinite loop
7071 When processing an ECParameters structure OpenSSL enters an infinite loop
7072 if the curve specified is over a specially malformed binary polynomial
7075 This can be used to perform denial of service against any
7076 system which processes public keys, certificate requests or
7077 certificates. This includes TLS clients and TLS servers with
7078 client authentication enabled.
7080 This issue was reported to OpenSSL by Joseph Barr-Pixton.
7085 * Exploitable out-of-bounds read in X509_cmp_time
7087 X509_cmp_time does not properly check the length of the ASN1_TIME
7088 string and can read a few bytes out of bounds. In addition,
7089 X509_cmp_time accepts an arbitrary number of fractional seconds in the
7092 An attacker can use this to craft malformed certificates and CRLs of
7093 various sizes and potentially cause a segmentation fault, resulting in
7094 a DoS on applications that verify certificates or CRLs. TLS clients
7095 that verify CRLs are affected. TLS clients and servers with client
7096 authentication enabled may be affected if they use custom verification
7099 This issue was reported to OpenSSL by Robert Swiecki (Google), and
7100 independently by Hanno Böck.
7105 * PKCS7 crash with missing EnvelopedContent
7107 The PKCS#7 parsing code does not handle missing inner EncryptedContent
7108 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs
7109 with missing content and trigger a NULL pointer dereference on parsing.
7111 Applications that decrypt PKCS#7 data or otherwise parse PKCS#7
7112 structures from untrusted sources are affected. OpenSSL clients and
7113 servers are not affected.
7115 This issue was reported to OpenSSL by Michal Zalewski (Google).
7120 * CMS verify infinite loop with unknown hash function
7122 When verifying a signedData message the CMS code can enter an infinite loop
7123 if presented with an unknown hash function OID. This can be used to perform
7124 denial of service against any system which verifies signedData messages using
7126 This issue was reported to OpenSSL by Johannes Bauer.
7131 * Race condition handling NewSessionTicket
7133 If a NewSessionTicket is received by a multi-threaded client when attempting to
7134 reuse a previous ticket then a race condition can occur potentially leading to
7135 a double free of the ticket data.
7140 * Reject DH handshakes with parameters shorter than 768 bits.
7142 *Kurt Roeckx and Emilia Kasper*
7144 * dhparam: generate 2048-bit parameters by default.
7146 *Kurt Roeckx and Emilia Kasper*
7148 ### Changes between 1.0.1l and 1.0.1m [19 Mar 2015]
7150 * Segmentation fault in ASN1_TYPE_cmp fix
7152 The function ASN1_TYPE_cmp will crash with an invalid read if an attempt is
7153 made to compare ASN.1 boolean types. Since ASN1_TYPE_cmp is used to check
7154 certificate signature algorithm consistency this can be used to crash any
7155 certificate verification operation and exploited in a DoS attack. Any
7156 application which performs certificate verification is vulnerable including
7157 OpenSSL clients and servers which enable client authentication.
7162 * ASN.1 structure reuse memory corruption fix
7164 Reusing a structure in ASN.1 parsing may allow an attacker to cause
7165 memory corruption via an invalid write. Such reuse is and has been
7166 strongly discouraged and is believed to be rare.
7168 Applications that parse structures containing CHOICE or ANY DEFINED BY
7169 components may be affected. Certificate parsing (d2i_X509 and related
7170 functions) are however not affected. OpenSSL clients and servers are
7176 * PKCS7 NULL pointer dereferences fix
7178 The PKCS#7 parsing code does not handle missing outer ContentInfo
7179 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs with
7180 missing content and trigger a NULL pointer dereference on parsing.
7182 Applications that verify PKCS#7 signatures, decrypt PKCS#7 data or
7183 otherwise parse PKCS#7 structures from untrusted sources are
7184 affected. OpenSSL clients and servers are not affected.
7186 This issue was reported to OpenSSL by Michal Zalewski (Google).
7191 * DoS via reachable assert in SSLv2 servers fix
7193 A malicious client can trigger an OPENSSL_assert (i.e., an abort) in
7194 servers that both support SSLv2 and enable export cipher suites by sending
7195 a specially crafted SSLv2 CLIENT-MASTER-KEY message.
7197 This issue was discovered by Sean Burford (Google) and Emilia Käsper
7198 (OpenSSL development team).
7203 * Use After Free following d2i_ECPrivatekey error fix
7205 A malformed EC private key file consumed via the d2i_ECPrivateKey function
7206 could cause a use after free condition. This, in turn, could cause a double
7207 free in several private key parsing functions (such as d2i_PrivateKey
7208 or EVP_PKCS82PKEY) and could lead to a DoS attack or memory corruption
7209 for applications that receive EC private keys from untrusted
7210 sources. This scenario is considered rare.
7212 This issue was discovered by the BoringSSL project and fixed in their
7218 * X509_to_X509_REQ NULL pointer deref fix
7220 The function X509_to_X509_REQ will crash with a NULL pointer dereference if
7221 the certificate key is invalid. This function is rarely used in practice.
7223 This issue was discovered by Brian Carpenter.
7228 * Removed the export ciphers from the DEFAULT ciphers
7232 ### Changes between 1.0.1k and 1.0.1l [15 Jan 2015]
7234 * Build fixes for the Windows and OpenVMS platforms
7236 *Matt Caswell and Richard Levitte*
7238 ### Changes between 1.0.1j and 1.0.1k [8 Jan 2015]
7240 * Fix DTLS segmentation fault in dtls1_get_record. A carefully crafted DTLS
7241 message can cause a segmentation fault in OpenSSL due to a NULL pointer
7242 dereference. This could lead to a Denial Of Service attack. Thanks to
7243 Markus Stenberg of Cisco Systems, Inc. for reporting this issue.
7248 * Fix DTLS memory leak in dtls1_buffer_record. A memory leak can occur in the
7249 dtls1_buffer_record function under certain conditions. In particular this
7250 could occur if an attacker sent repeated DTLS records with the same
7251 sequence number but for the next epoch. The memory leak could be exploited
7252 by an attacker in a Denial of Service attack through memory exhaustion.
7253 Thanks to Chris Mueller for reporting this issue.
7258 * Fix issue where no-ssl3 configuration sets method to NULL. When openssl is
7259 built with the no-ssl3 option and a SSL v3 ClientHello is received the ssl
7260 method would be set to NULL which could later result in a NULL pointer
7261 dereference. Thanks to Frank Schmirler for reporting this issue.
7266 * Abort handshake if server key exchange message is omitted for ephemeral
7269 Thanks to Karthikeyan Bhargavan of the PROSECCO team at INRIA for
7270 reporting this issue.
7275 * Remove non-export ephemeral RSA code on client and server. This code
7276 violated the TLS standard by allowing the use of temporary RSA keys in
7277 non-export ciphersuites and could be used by a server to effectively
7278 downgrade the RSA key length used to a value smaller than the server
7279 certificate. Thanks for Karthikeyan Bhargavan of the PROSECCO team at
7280 INRIA or reporting this issue.
7285 * Fixed issue where DH client certificates are accepted without verification.
7286 An OpenSSL server will accept a DH certificate for client authentication
7287 without the certificate verify message. This effectively allows a client to
7288 authenticate without the use of a private key. This only affects servers
7289 which trust a client certificate authority which issues certificates
7290 containing DH keys: these are extremely rare and hardly ever encountered.
7291 Thanks for Karthikeyan Bhargavan of the PROSECCO team at INRIA or reporting
7297 * Ensure that the session ID context of an SSL is updated when its
7298 SSL_CTX is updated via SSL_set_SSL_CTX.
7300 The session ID context is typically set from the parent SSL_CTX,
7301 and can vary with the CTX.
7305 * Fix various certificate fingerprint issues.
7307 By using non-DER or invalid encodings outside the signed portion of a
7308 certificate the fingerprint can be changed without breaking the signature.
7309 Although no details of the signed portion of the certificate can be changed
7310 this can cause problems with some applications: e.g. those using the
7311 certificate fingerprint for blacklists.
7313 1. Reject signatures with non zero unused bits.
7315 If the BIT STRING containing the signature has non zero unused bits reject
7316 the signature. All current signature algorithms require zero unused bits.
7318 2. Check certificate algorithm consistency.
7320 Check the AlgorithmIdentifier inside TBS matches the one in the
7321 certificate signature. NB: this will result in signature failure
7322 errors for some broken certificates.
7324 Thanks to Konrad Kraszewski from Google for reporting this issue.
7326 3. Check DSA/ECDSA signatures use DER.
7328 Re-encode DSA/ECDSA signatures and compare with the original received
7329 signature. Return an error if there is a mismatch.
7331 This will reject various cases including garbage after signature
7332 (thanks to Antti Karjalainen and Tuomo Untinen from the Codenomicon CROSS
7333 program for discovering this case) and use of BER or invalid ASN.1 INTEGERs
7334 (negative or with leading zeroes).
7336 Further analysis was conducted and fixes were developed by Stephen Henson
7337 of the OpenSSL core team.
7343 * Correct Bignum squaring. Bignum squaring (BN_sqr) may produce incorrect
7344 results on some platforms, including x86_64. This bug occurs at random
7345 with a very low probability, and is not known to be exploitable in any
7346 way, though its exact impact is difficult to determine. Thanks to Pieter
7347 Wuille (Blockstream) who reported this issue and also suggested an initial
7348 fix. Further analysis was conducted by the OpenSSL development team and
7349 Adam Langley of Google. The final fix was developed by Andy Polyakov of
7350 the OpenSSL core team.
7355 * Do not resume sessions on the server if the negotiated protocol
7356 version does not match the session's version. Resuming with a different
7357 version, while not strictly forbidden by the RFC, is of questionable
7358 sanity and breaks all known clients.
7360 *David Benjamin, Emilia Käsper*
7362 * Tighten handling of the ChangeCipherSpec (CCS) message: reject
7363 early CCS messages during renegotiation. (Note that because
7364 renegotiation is encrypted, this early CCS was not exploitable.)
7368 * Tighten client-side session ticket handling during renegotiation:
7369 ensure that the client only accepts a session ticket if the server sends
7370 the extension anew in the ServerHello. Previously, a TLS client would
7371 reuse the old extension state and thus accept a session ticket if one was
7372 announced in the initial ServerHello.
7374 Similarly, ensure that the client requires a session ticket if one
7375 was advertised in the ServerHello. Previously, a TLS client would
7376 ignore a missing NewSessionTicket message.
7380 ### Changes between 1.0.1i and 1.0.1j [15 Oct 2014]
7384 A flaw in the DTLS SRTP extension parsing code allows an attacker, who
7385 sends a carefully crafted handshake message, to cause OpenSSL to fail
7386 to free up to 64k of memory causing a memory leak. This could be
7387 exploited in a Denial Of Service attack. This issue affects OpenSSL
7388 1.0.1 server implementations for both SSL/TLS and DTLS regardless of
7389 whether SRTP is used or configured. Implementations of OpenSSL that
7390 have been compiled with OPENSSL_NO_SRTP defined are not affected.
7392 The fix was developed by the OpenSSL team.
7397 * Session Ticket Memory Leak.
7399 When an OpenSSL SSL/TLS/DTLS server receives a session ticket the
7400 integrity of that ticket is first verified. In the event of a session
7401 ticket integrity check failing, OpenSSL will fail to free memory
7402 causing a memory leak. By sending a large number of invalid session
7403 tickets an attacker could exploit this issue in a Denial Of Service
7409 * Build option no-ssl3 is incomplete.
7411 When OpenSSL is configured with "no-ssl3" as a build option, servers
7412 could accept and complete an SSL 3.0 handshake, and clients could be
7413 configured to send them.
7416 *Akamai and the OpenSSL team*
7418 * Add support for TLS_FALLBACK_SCSV.
7419 Client applications doing fallback retries should call
7420 SSL_set_mode(s, SSL_MODE_SEND_FALLBACK_SCSV).
7423 *Adam Langley, Bodo Moeller*
7425 * Add additional DigestInfo checks.
7427 Re-encode DigestInto in DER and check against the original when
7428 verifying RSA signature: this will reject any improperly encoded
7429 DigestInfo structures.
7431 Note: this is a precautionary measure and no attacks are currently known.
7435 ### Changes between 1.0.1h and 1.0.1i [6 Aug 2014]
7437 * Fix SRP buffer overrun vulnerability. Invalid parameters passed to the
7438 SRP code can be overrun an internal buffer. Add sanity check that
7439 g, A, B < N to SRP code.
7441 Thanks to Sean Devlin and Watson Ladd of Cryptography Services, NCC
7442 Group for discovering this issue.
7447 * A flaw in the OpenSSL SSL/TLS server code causes the server to negotiate
7448 TLS 1.0 instead of higher protocol versions when the ClientHello message
7449 is badly fragmented. This allows a man-in-the-middle attacker to force a
7450 downgrade to TLS 1.0 even if both the server and the client support a
7451 higher protocol version, by modifying the client's TLS records.
7453 Thanks to David Benjamin and Adam Langley (Google) for discovering and
7454 researching this issue.
7459 * OpenSSL DTLS clients enabling anonymous (EC)DH ciphersuites are subject
7460 to a denial of service attack. A malicious server can crash the client
7461 with a null pointer dereference (read) by specifying an anonymous (EC)DH
7462 ciphersuite and sending carefully crafted handshake messages.
7464 Thanks to Felix Gröbert (Google) for discovering and researching this
7470 * By sending carefully crafted DTLS packets an attacker could cause openssl
7471 to leak memory. This can be exploited through a Denial of Service attack.
7472 Thanks to Adam Langley for discovering and researching this issue.
7477 * An attacker can force openssl to consume large amounts of memory whilst
7478 processing DTLS handshake messages. This can be exploited through a
7479 Denial of Service attack.
7480 Thanks to Adam Langley for discovering and researching this issue.
7485 * An attacker can force an error condition which causes openssl to crash
7486 whilst processing DTLS packets due to memory being freed twice. This
7487 can be exploited through a Denial of Service attack.
7488 Thanks to Adam Langley and Wan-Teh Chang for discovering and researching
7494 * If a multithreaded client connects to a malicious server using a resumed
7495 session and the server sends an ec point format extension it could write
7496 up to 255 bytes to freed memory.
7498 Thanks to Gabor Tyukasz (LogMeIn Inc) for discovering and researching this
7504 * A malicious server can crash an OpenSSL client with a null pointer
7505 dereference (read) by specifying an SRP ciphersuite even though it was not
7506 properly negotiated with the client. This can be exploited through a
7507 Denial of Service attack.
7509 Thanks to Joonas Kuorilehto and Riku Hietamäki (Codenomicon) for
7510 discovering and researching this issue.
7515 * A flaw in OBJ_obj2txt may cause pretty printing functions such as
7516 X509_name_oneline, X509_name_print_ex et al. to leak some information
7517 from the stack. Applications may be affected if they echo pretty printing
7518 output to the attacker.
7520 Thanks to Ivan Fratric (Google) for discovering this issue.
7523 *Emilia Käsper, and Steve Henson*
7525 * Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
7526 for corner cases. (Certain input points at infinity could lead to
7527 bogus results, with non-infinity inputs mapped to infinity too.)
7531 ### Changes between 1.0.1g and 1.0.1h [5 Jun 2014]
7533 * Fix for SSL/TLS MITM flaw. An attacker using a carefully crafted
7534 handshake can force the use of weak keying material in OpenSSL
7535 SSL/TLS clients and servers.
7537 Thanks to KIKUCHI Masashi (Lepidum Co. Ltd.) for discovering and
7538 researching this issue. ([CVE-2014-0224])
7540 *KIKUCHI Masashi, Steve Henson*
7542 * Fix DTLS recursion flaw. By sending an invalid DTLS handshake to an
7543 OpenSSL DTLS client the code can be made to recurse eventually crashing
7546 Thanks to Imre Rad (Search-Lab Ltd.) for discovering this issue.
7549 *Imre Rad, Steve Henson*
7551 * Fix DTLS invalid fragment vulnerability. A buffer overrun attack can
7552 be triggered by sending invalid DTLS fragments to an OpenSSL DTLS
7553 client or server. This is potentially exploitable to run arbitrary
7554 code on a vulnerable client or server.
7556 Thanks to Jüri Aedla for reporting this issue. ([CVE-2014-0195])
7558 *Jüri Aedla, Steve Henson*
7560 * Fix bug in TLS code where clients enable anonymous ECDH ciphersuites
7561 are subject to a denial of service attack.
7563 Thanks to Felix Gröbert and Ivan Fratric at Google for discovering
7564 this issue. ([CVE-2014-3470])
7566 *Felix Gröbert, Ivan Fratric, Steve Henson*
7568 * Harmonize version and its documentation. -f flag is used to display
7571 *mancha <mancha1@zoho.com>*
7573 * Fix eckey_priv_encode so it immediately returns an error upon a failure
7574 in i2d_ECPrivateKey.
7576 *mancha <mancha1@zoho.com>*
7578 * Fix some double frees. These are not thought to be exploitable.
7580 *mancha <mancha1@zoho.com>*
7582 ### Changes between 1.0.1f and 1.0.1g [7 Apr 2014]
7584 * A missing bounds check in the handling of the TLS heartbeat extension
7585 can be used to reveal up to 64k of memory to a connected client or
7588 Thanks for Neel Mehta of Google Security for discovering this bug and to
7589 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
7590 preparing the fix ([CVE-2014-0160])
7592 *Adam Langley, Bodo Moeller*
7594 * Fix for the attack described in the paper "Recovering OpenSSL
7595 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
7596 by Yuval Yarom and Naomi Benger. Details can be obtained from:
7597 <http://eprint.iacr.org/2014/140>
7599 Thanks to Yuval Yarom and Naomi Benger for discovering this
7600 flaw and to Yuval Yarom for supplying a fix ([CVE-2014-0076])
7602 *Yuval Yarom and Naomi Benger*
7604 * TLS pad extension: draft-agl-tls-padding-03
7606 Workaround for the "TLS hang bug" (see FAQ and PR#2771): if the
7607 TLS client Hello record length value would otherwise be > 255 and
7608 less that 512 pad with a dummy extension containing zeroes so it
7609 is at least 512 bytes long.
7611 *Adam Langley, Steve Henson*
7613 ### Changes between 1.0.1e and 1.0.1f [6 Jan 2014]
7615 * Fix for TLS record tampering bug. A carefully crafted invalid
7616 handshake could crash OpenSSL with a NULL pointer exception.
7617 Thanks to Anton Johansson for reporting this issues.
7620 * Keep original DTLS digest and encryption contexts in retransmission
7621 structures so we can use the previous session parameters if they need
7622 to be resent. ([CVE-2013-6450])
7626 * Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which
7627 avoids preferring ECDHE-ECDSA ciphers when the client appears to be
7628 Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for
7629 several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug
7630 is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing
7631 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer.
7633 *Rob Stradling, Adam Langley*
7635 ### Changes between 1.0.1d and 1.0.1e [11 Feb 2013]
7637 * Correct fix for CVE-2013-0169. The original didn't work on AES-NI
7638 supporting platforms or when small records were transferred.
7640 *Andy Polyakov, Steve Henson*
7642 ### Changes between 1.0.1c and 1.0.1d [5 Feb 2013]
7644 * Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
7646 This addresses the flaw in CBC record processing discovered by
7647 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
7648 at: <http://www.isg.rhul.ac.uk/tls/>
7650 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
7651 Security Group at Royal Holloway, University of London
7652 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
7653 Emilia Käsper for the initial patch.
7656 *Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson*
7658 * Fix flaw in AESNI handling of TLS 1.2 and 1.1 records for CBC mode
7659 ciphersuites which can be exploited in a denial of service attack.
7660 Thanks go to and to Adam Langley <agl@chromium.org> for discovering
7661 and detecting this bug and to Wolfgang Ettlinger
7662 <wolfgang.ettlinger@gmail.com> for independently discovering this issue.
7667 * Return an error when checking OCSP signatures when key is NULL.
7668 This fixes a DoS attack. ([CVE-2013-0166])
7672 * Make openssl verify return errors.
7674 *Chris Palmer <palmer@google.com> and Ben Laurie*
7676 * Call OCSP Stapling callback after ciphersuite has been chosen, so
7677 the right response is stapled. Also change SSL_get_certificate()
7678 so it returns the certificate actually sent.
7679 See <http://rt.openssl.org/Ticket/Display.html?id=2836>.
7681 *Rob Stradling <rob.stradling@comodo.com>*
7683 * Fix possible deadlock when decoding public keys.
7687 * Don't use TLS 1.0 record version number in initial client hello
7692 ### Changes between 1.0.1b and 1.0.1c [10 May 2012]
7694 * Sanity check record length before skipping explicit IV in TLS
7695 1.2, 1.1 and DTLS to fix DoS attack.
7697 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
7698 fuzzing as a service testing platform.
7703 * Initialise tkeylen properly when encrypting CMS messages.
7704 Thanks to Solar Designer of Openwall for reporting this issue.
7708 * In FIPS mode don't try to use composite ciphers as they are not
7713 ### Changes between 1.0.1a and 1.0.1b [26 Apr 2012]
7715 * OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and
7716 1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately
7717 mean any application compiled against OpenSSL 1.0.0 headers setting
7718 SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disabling
7719 TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to
7720 0x10000000L Any application which was previously compiled against
7721 OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1
7722 will need to be recompiled as a result. Letting be results in
7723 inability to disable specifically TLS 1.1 and in client context,
7724 in unlike event, limit maximum offered version to TLS 1.0 [see below].
7728 * In order to ensure interoperability SSL_OP_NO_protocolX does not
7729 disable just protocol X, but all protocols above X *if* there are
7730 protocols *below* X still enabled. In more practical terms it means
7731 that if application wants to disable TLS1.0 in favor of TLS1.1 and
7732 above, it's not sufficient to pass `SSL_OP_NO_TLSv1`, one has to pass
7733 `SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2`. This applies to
7738 ### Changes between 1.0.1 and 1.0.1a [19 Apr 2012]
7740 * Check for potentially exploitable overflows in asn1_d2i_read_bio
7741 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
7742 in CRYPTO_realloc_clean.
7744 Thanks to Tavis Ormandy, Google Security Team, for discovering this
7745 issue and to Adam Langley <agl@chromium.org> for fixing it.
7748 *Adam Langley (Google), Tavis Ormandy, Google Security Team*
7750 * Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections.
7754 * Workarounds for some broken servers that "hang" if a client hello
7755 record length exceeds 255 bytes.
7757 1. Do not use record version number > TLS 1.0 in initial client
7758 hello: some (but not all) hanging servers will now work.
7759 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate
7760 the number of ciphers sent in the client hello. This should be
7761 set to an even number, such as 50, for example by passing:
7762 -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure.
7763 Most broken servers should now work.
7764 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable
7765 TLS 1.2 client support entirely.
7769 * Fix SEGV in Vector Permutation AES module observed in OpenSSH.
7773 ### Changes between 1.0.0h and 1.0.1 [14 Mar 2012]
7775 * Add compatibility with old MDC2 signatures which use an ASN1 OCTET
7776 STRING form instead of a DigestInfo.
7780 * The format used for MDC2 RSA signatures is inconsistent between EVP
7781 and the RSA_sign/RSA_verify functions. This was made more apparent when
7782 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
7783 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
7784 the correct format in RSA_verify so both forms transparently work.
7788 * Some servers which support TLS 1.0 can choke if we initially indicate
7789 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
7790 encrypted premaster secret. As a workaround use the maximum permitted
7791 client version in client hello, this should keep such servers happy
7792 and still work with previous versions of OpenSSL.
7796 * Add support for TLS/DTLS heartbeats.
7798 *Robin Seggelmann <seggelmann@fh-muenster.de>*
7800 * Add support for SCTP.
7802 *Robin Seggelmann <seggelmann@fh-muenster.de>*
7804 * Improved PRNG seeding for VOS.
7806 *Paul Green <Paul.Green@stratus.com>*
7808 * Extensive assembler packs updates, most notably:
7810 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
7811 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
7812 - x86_64: bit-sliced AES implementation;
7813 - ARM: NEON support, contemporary platforms optimizations;
7814 - s390x: z196 support;
7815 - `*`: GHASH and GF(2^m) multiplication implementations;
7819 * Make TLS-SRP code conformant with RFC 5054 API cleanup
7820 (removal of unnecessary code)
7822 *Peter Sylvester <peter.sylvester@edelweb.fr>*
7824 * Add TLS key material exporter from RFC 5705.
7828 * Add DTLS-SRTP negotiation from RFC 5764.
7832 * Add Next Protocol Negotiation,
7833 <http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00>. Can be
7834 disabled with a no-npn flag to config or Configure. Code donated
7837 *Adam Langley <agl@google.com> and Ben Laurie*
7839 * Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
7840 NIST-P256, NIST-P521, with constant-time single point multiplication on
7841 typical inputs. Compiler support for the nonstandard type `__uint128_t` is
7842 required to use this (present in gcc 4.4 and later, for 64-bit builds).
7843 Code made available under Apache License version 2.0.
7845 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
7846 line to include this in your build of OpenSSL, and run "make depend" (or
7847 "make update"). This enables the following EC_METHODs:
7849 EC_GFp_nistp224_method()
7850 EC_GFp_nistp256_method()
7851 EC_GFp_nistp521_method()
7853 EC_GROUP_new_by_curve_name() will automatically use these (while
7854 EC_GROUP_new_curve_GFp() currently prefers the more flexible
7857 *Emilia Käsper, Adam Langley, Bodo Moeller (Google)*
7859 * Use type ossl_ssize_t instead of ssize_t which isn't available on
7860 all platforms. Move ssize_t definition from e_os.h to the public
7861 header file e_os2.h as it now appears in public header file cms.h
7865 * New -sigopt option to the ca, req and x509 utilities. Additional
7866 signature parameters can be passed using this option and in
7871 * Add RSA PSS signing function. This will generate and set the
7872 appropriate AlgorithmIdentifiers for PSS based on those in the
7873 corresponding EVP_MD_CTX structure. No application support yet.
7877 * Support for companion algorithm specific ASN1 signing routines.
7878 New function ASN1_item_sign_ctx() signs a pre-initialised
7879 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
7880 the appropriate parameters.
7884 * Add new algorithm specific ASN1 verification initialisation function
7885 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
7886 handling will be the same no matter what EVP_PKEY_METHOD is used.
7887 Add a PSS handler to support verification of PSS signatures: checked
7888 against a number of sample certificates.
7892 * Add signature printing for PSS. Add PSS OIDs.
7894 *Steve Henson, Martin Kaiser <lists@kaiser.cx>*
7896 * Add algorithm specific signature printing. An individual ASN1 method
7897 can now print out signatures instead of the standard hex dump.
7899 More complex signatures (e.g. PSS) can print out more meaningful
7900 information. Include DSA version that prints out the signature
7905 * Password based recipient info support for CMS library: implementing
7910 * Split password based encryption into PBES2 and PBKDF2 functions. This
7911 neatly separates the code into cipher and PBE sections and is required
7912 for some algorithms that split PBES2 into separate pieces (such as
7913 password based CMS).
7917 * Session-handling fixes:
7918 - Fix handling of connections that are resuming with a session ID,
7919 but also support Session Tickets.
7920 - Fix a bug that suppressed issuing of a new ticket if the client
7921 presented a ticket with an expired session.
7922 - Try to set the ticket lifetime hint to something reasonable.
7923 - Make tickets shorter by excluding irrelevant information.
7924 - On the client side, don't ignore renewed tickets.
7926 *Adam Langley, Bodo Moeller (Google)*
7928 * Fix PSK session representation.
7932 * Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
7934 This work was sponsored by Intel.
7938 * Add GCM support to TLS library. Some custom code is needed to split
7939 the IV between the fixed (from PRF) and explicit (from TLS record)
7940 portions. This adds all GCM ciphersuites supported by RFC5288 and
7941 RFC5289. Generalise some `AES*` cipherstrings to include GCM and
7942 add a special AESGCM string for GCM only.
7946 * Expand range of ctrls for AES GCM. Permit setting invocation
7947 field on decrypt and retrieval of invocation field only on encrypt.
7951 * Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
7952 As required by RFC5289 these ciphersuites cannot be used if for
7953 versions of TLS earlier than 1.2.
7957 * For FIPS capable OpenSSL interpret a NULL default public key method
7958 as unset and return the appropriate default but do *not* set the default.
7959 This means we can return the appropriate method in applications that
7960 switch between FIPS and non-FIPS modes.
7964 * Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
7965 ENGINE is used then we cannot handle that in the FIPS module so we
7966 keep original code iff non-FIPS operations are allowed.
7970 * Add -attime option to openssl utilities.
7972 *Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson*
7974 * Redirect DSA and DH operations to FIPS module in FIPS mode.
7978 * Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
7979 FIPS EC methods unconditionally for now.
7983 * New build option no-ec2m to disable characteristic 2 code.
7987 * Backport libcrypto audit of return value checking from 1.1.0-dev; not
7988 all cases can be covered as some introduce binary incompatibilities.
7992 * Redirect RSA operations to FIPS module including keygen,
7993 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
7997 * Add similar low-level API blocking to ciphers.
8001 * low-level digest APIs are not approved in FIPS mode: any attempt
8002 to use these will cause a fatal error. Applications that *really* want
8003 to use them can use the `private_*` version instead.
8007 * Redirect cipher operations to FIPS module for FIPS builds.
8011 * Redirect digest operations to FIPS module for FIPS builds.
8015 * Update build system to add "fips" flag which will link in fipscanister.o
8016 for static and shared library builds embedding a signature if needed.
8020 * Output TLS supported curves in preference order instead of numerical
8021 order. This is currently hardcoded for the highest order curves first.
8022 This should be configurable so applications can judge speed vs strength.
8026 * Add TLS v1.2 server support for client authentication.
8030 * Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
8035 * Functions FIPS_mode_set() and FIPS_mode() which call the underlying
8036 FIPS modules versions.
8040 * Add TLS v1.2 client side support for client authentication. Keep cache
8041 of handshake records longer as we don't know the hash algorithm to use
8042 until after the certificate request message is received.
8046 * Initial TLS v1.2 client support. Add a default signature algorithms
8047 extension including all the algorithms we support. Parse new signature
8048 format in client key exchange. Relax some ECC signing restrictions for
8049 TLS v1.2 as indicated in RFC5246.
8053 * Add server support for TLS v1.2 signature algorithms extension. Switch
8054 to new signature format when needed using client digest preference.
8055 All server ciphersuites should now work correctly in TLS v1.2. No client
8056 support yet and no support for client certificates.
8060 * Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
8061 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
8062 ciphersuites. At present only RSA key exchange ciphersuites work with
8063 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
8064 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
8065 and version checking.
8069 * New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
8070 with this defined it will not be affected by any changes to ssl internal
8071 structures. Add several utility functions to allow openssl application
8072 to work with OPENSSL_NO_SSL_INTERN defined.
8076 * A long standing patch to add support for SRP from EdelWeb (Peter
8077 Sylvester and Christophe Renou) was integrated.
8078 *Christophe Renou <christophe.renou@edelweb.fr>, Peter Sylvester
8079 <peter.sylvester@edelweb.fr>, Tom Wu <tjw@cs.stanford.edu>, and
8082 * Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
8086 * Permit abbreviated handshakes when renegotiating using the function
8087 SSL_renegotiate_abbreviated().
8089 *Robin Seggelmann <seggelmann@fh-muenster.de>*
8091 * Add call to ENGINE_register_all_complete() to
8092 ENGINE_load_builtin_engines(), so some implementations get used
8093 automatically instead of needing explicit application support.
8097 * Add support for TLS key exporter as described in RFC5705.
8099 *Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson*
8101 * Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
8102 a few changes are required:
8104 Add SSL_OP_NO_TLSv1_1 flag.
8105 Add TLSv1_1 methods.
8106 Update version checking logic to handle version 1.1.
8107 Add explicit IV handling (ported from DTLS code).
8108 Add command line options to s_client/s_server.
8115 ### Changes between 1.0.0s and 1.0.0t [3 Dec 2015]
8117 * X509_ATTRIBUTE memory leak
8119 When presented with a malformed X509_ATTRIBUTE structure OpenSSL will leak
8120 memory. This structure is used by the PKCS#7 and CMS routines so any
8121 application which reads PKCS#7 or CMS data from untrusted sources is
8122 affected. SSL/TLS is not affected.
8124 This issue was reported to OpenSSL by Adam Langley (Google/BoringSSL) using
8130 * Race condition handling PSK identify hint
8132 If PSK identity hints are received by a multi-threaded client then
8133 the values are wrongly updated in the parent SSL_CTX structure. This can
8134 result in a race condition potentially leading to a double free of the
8140 ### Changes between 1.0.0r and 1.0.0s [11 Jun 2015]
8142 * Malformed ECParameters causes infinite loop
8144 When processing an ECParameters structure OpenSSL enters an infinite loop
8145 if the curve specified is over a specially malformed binary polynomial
8148 This can be used to perform denial of service against any
8149 system which processes public keys, certificate requests or
8150 certificates. This includes TLS clients and TLS servers with
8151 client authentication enabled.
8153 This issue was reported to OpenSSL by Joseph Barr-Pixton.
8158 * Exploitable out-of-bounds read in X509_cmp_time
8160 X509_cmp_time does not properly check the length of the ASN1_TIME
8161 string and can read a few bytes out of bounds. In addition,
8162 X509_cmp_time accepts an arbitrary number of fractional seconds in the
8165 An attacker can use this to craft malformed certificates and CRLs of
8166 various sizes and potentially cause a segmentation fault, resulting in
8167 a DoS on applications that verify certificates or CRLs. TLS clients
8168 that verify CRLs are affected. TLS clients and servers with client
8169 authentication enabled may be affected if they use custom verification
8172 This issue was reported to OpenSSL by Robert Swiecki (Google), and
8173 independently by Hanno Böck.
8178 * PKCS7 crash with missing EnvelopedContent
8180 The PKCS#7 parsing code does not handle missing inner EncryptedContent
8181 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs
8182 with missing content and trigger a NULL pointer dereference on parsing.
8184 Applications that decrypt PKCS#7 data or otherwise parse PKCS#7
8185 structures from untrusted sources are affected. OpenSSL clients and
8186 servers are not affected.
8188 This issue was reported to OpenSSL by Michal Zalewski (Google).
8193 * CMS verify infinite loop with unknown hash function
8195 When verifying a signedData message the CMS code can enter an infinite loop
8196 if presented with an unknown hash function OID. This can be used to perform
8197 denial of service against any system which verifies signedData messages using
8199 This issue was reported to OpenSSL by Johannes Bauer.
8204 * Race condition handling NewSessionTicket
8206 If a NewSessionTicket is received by a multi-threaded client when attempting to
8207 reuse a previous ticket then a race condition can occur potentially leading to
8208 a double free of the ticket data.
8213 ### Changes between 1.0.0q and 1.0.0r [19 Mar 2015]
8215 * Segmentation fault in ASN1_TYPE_cmp fix
8217 The function ASN1_TYPE_cmp will crash with an invalid read if an attempt is
8218 made to compare ASN.1 boolean types. Since ASN1_TYPE_cmp is used to check
8219 certificate signature algorithm consistency this can be used to crash any
8220 certificate verification operation and exploited in a DoS attack. Any
8221 application which performs certificate verification is vulnerable including
8222 OpenSSL clients and servers which enable client authentication.
8227 * ASN.1 structure reuse memory corruption fix
8229 Reusing a structure in ASN.1 parsing may allow an attacker to cause
8230 memory corruption via an invalid write. Such reuse is and has been
8231 strongly discouraged and is believed to be rare.
8233 Applications that parse structures containing CHOICE or ANY DEFINED BY
8234 components may be affected. Certificate parsing (d2i_X509 and related
8235 functions) are however not affected. OpenSSL clients and servers are
8241 * PKCS7 NULL pointer dereferences fix
8243 The PKCS#7 parsing code does not handle missing outer ContentInfo
8244 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs with
8245 missing content and trigger a NULL pointer dereference on parsing.
8247 Applications that verify PKCS#7 signatures, decrypt PKCS#7 data or
8248 otherwise parse PKCS#7 structures from untrusted sources are
8249 affected. OpenSSL clients and servers are not affected.
8251 This issue was reported to OpenSSL by Michal Zalewski (Google).
8256 * DoS via reachable assert in SSLv2 servers fix
8258 A malicious client can trigger an OPENSSL_assert (i.e., an abort) in
8259 servers that both support SSLv2 and enable export cipher suites by sending
8260 a specially crafted SSLv2 CLIENT-MASTER-KEY message.
8262 This issue was discovered by Sean Burford (Google) and Emilia Käsper
8263 (OpenSSL development team).
8268 * Use After Free following d2i_ECPrivatekey error fix
8270 A malformed EC private key file consumed via the d2i_ECPrivateKey function
8271 could cause a use after free condition. This, in turn, could cause a double
8272 free in several private key parsing functions (such as d2i_PrivateKey
8273 or EVP_PKCS82PKEY) and could lead to a DoS attack or memory corruption
8274 for applications that receive EC private keys from untrusted
8275 sources. This scenario is considered rare.
8277 This issue was discovered by the BoringSSL project and fixed in their
8283 * X509_to_X509_REQ NULL pointer deref fix
8285 The function X509_to_X509_REQ will crash with a NULL pointer dereference if
8286 the certificate key is invalid. This function is rarely used in practice.
8288 This issue was discovered by Brian Carpenter.
8293 * Removed the export ciphers from the DEFAULT ciphers
8297 ### Changes between 1.0.0p and 1.0.0q [15 Jan 2015]
8299 * Build fixes for the Windows and OpenVMS platforms
8301 *Matt Caswell and Richard Levitte*
8303 ### Changes between 1.0.0o and 1.0.0p [8 Jan 2015]
8305 * Fix DTLS segmentation fault in dtls1_get_record. A carefully crafted DTLS
8306 message can cause a segmentation fault in OpenSSL due to a NULL pointer
8307 dereference. This could lead to a Denial Of Service attack. Thanks to
8308 Markus Stenberg of Cisco Systems, Inc. for reporting this issue.
8313 * Fix DTLS memory leak in dtls1_buffer_record. A memory leak can occur in the
8314 dtls1_buffer_record function under certain conditions. In particular this
8315 could occur if an attacker sent repeated DTLS records with the same
8316 sequence number but for the next epoch. The memory leak could be exploited
8317 by an attacker in a Denial of Service attack through memory exhaustion.
8318 Thanks to Chris Mueller for reporting this issue.
8323 * Fix issue where no-ssl3 configuration sets method to NULL. When openssl is
8324 built with the no-ssl3 option and a SSL v3 ClientHello is received the ssl
8325 method would be set to NULL which could later result in a NULL pointer
8326 dereference. Thanks to Frank Schmirler for reporting this issue.
8331 * Abort handshake if server key exchange message is omitted for ephemeral
8334 Thanks to Karthikeyan Bhargavan of the PROSECCO team at INRIA for
8335 reporting this issue.
8340 * Remove non-export ephemeral RSA code on client and server. This code
8341 violated the TLS standard by allowing the use of temporary RSA keys in
8342 non-export ciphersuites and could be used by a server to effectively
8343 downgrade the RSA key length used to a value smaller than the server
8344 certificate. Thanks for Karthikeyan Bhargavan of the PROSECCO team at
8345 INRIA or reporting this issue.
8350 * Fixed issue where DH client certificates are accepted without verification.
8351 An OpenSSL server will accept a DH certificate for client authentication
8352 without the certificate verify message. This effectively allows a client to
8353 authenticate without the use of a private key. This only affects servers
8354 which trust a client certificate authority which issues certificates
8355 containing DH keys: these are extremely rare and hardly ever encountered.
8356 Thanks for Karthikeyan Bhargavan of the PROSECCO team at INRIA or reporting
8362 * Correct Bignum squaring. Bignum squaring (BN_sqr) may produce incorrect
8363 results on some platforms, including x86_64. This bug occurs at random
8364 with a very low probability, and is not known to be exploitable in any
8365 way, though its exact impact is difficult to determine. Thanks to Pieter
8366 Wuille (Blockstream) who reported this issue and also suggested an initial
8367 fix. Further analysis was conducted by the OpenSSL development team and
8368 Adam Langley of Google. The final fix was developed by Andy Polyakov of
8369 the OpenSSL core team.
8374 * Fix various certificate fingerprint issues.
8376 By using non-DER or invalid encodings outside the signed portion of a
8377 certificate the fingerprint can be changed without breaking the signature.
8378 Although no details of the signed portion of the certificate can be changed
8379 this can cause problems with some applications: e.g. those using the
8380 certificate fingerprint for blacklists.
8382 1. Reject signatures with non zero unused bits.
8384 If the BIT STRING containing the signature has non zero unused bits reject
8385 the signature. All current signature algorithms require zero unused bits.
8387 2. Check certificate algorithm consistency.
8389 Check the AlgorithmIdentifier inside TBS matches the one in the
8390 certificate signature. NB: this will result in signature failure
8391 errors for some broken certificates.
8393 Thanks to Konrad Kraszewski from Google for reporting this issue.
8395 3. Check DSA/ECDSA signatures use DER.
8397 Reencode DSA/ECDSA signatures and compare with the original received
8398 signature. Return an error if there is a mismatch.
8400 This will reject various cases including garbage after signature
8401 (thanks to Antti Karjalainen and Tuomo Untinen from the Codenomicon CROSS
8402 program for discovering this case) and use of BER or invalid ASN.1 INTEGERs
8403 (negative or with leading zeroes).
8405 Further analysis was conducted and fixes were developed by Stephen Henson
8406 of the OpenSSL core team.
8412 ### Changes between 1.0.0n and 1.0.0o [15 Oct 2014]
8414 * Session Ticket Memory Leak.
8416 When an OpenSSL SSL/TLS/DTLS server receives a session ticket the
8417 integrity of that ticket is first verified. In the event of a session
8418 ticket integrity check failing, OpenSSL will fail to free memory
8419 causing a memory leak. By sending a large number of invalid session
8420 tickets an attacker could exploit this issue in a Denial Of Service
8426 * Build option no-ssl3 is incomplete.
8428 When OpenSSL is configured with "no-ssl3" as a build option, servers
8429 could accept and complete an SSL 3.0 handshake, and clients could be
8430 configured to send them.
8433 *Akamai and the OpenSSL team*
8435 * Add support for TLS_FALLBACK_SCSV.
8436 Client applications doing fallback retries should call
8437 SSL_set_mode(s, SSL_MODE_SEND_FALLBACK_SCSV).
8440 *Adam Langley, Bodo Moeller*
8442 * Add additional DigestInfo checks.
8444 Reencode DigestInto in DER and check against the original when
8445 verifying RSA signature: this will reject any improperly encoded
8446 DigestInfo structures.
8448 Note: this is a precautionary measure and no attacks are currently known.
8452 ### Changes between 1.0.0m and 1.0.0n [6 Aug 2014]
8454 * OpenSSL DTLS clients enabling anonymous (EC)DH ciphersuites are subject
8455 to a denial of service attack. A malicious server can crash the client
8456 with a null pointer dereference (read) by specifying an anonymous (EC)DH
8457 ciphersuite and sending carefully crafted handshake messages.
8459 Thanks to Felix Gröbert (Google) for discovering and researching this
8465 * By sending carefully crafted DTLS packets an attacker could cause openssl
8466 to leak memory. This can be exploited through a Denial of Service attack.
8467 Thanks to Adam Langley for discovering and researching this issue.
8472 * An attacker can force openssl to consume large amounts of memory whilst
8473 processing DTLS handshake messages. This can be exploited through a
8474 Denial of Service attack.
8475 Thanks to Adam Langley for discovering and researching this issue.
8480 * An attacker can force an error condition which causes openssl to crash
8481 whilst processing DTLS packets due to memory being freed twice. This
8482 can be exploited through a Denial of Service attack.
8483 Thanks to Adam Langley and Wan-Teh Chang for discovering and researching
8489 * If a multithreaded client connects to a malicious server using a resumed
8490 session and the server sends an ec point format extension it could write
8491 up to 255 bytes to freed memory.
8493 Thanks to Gabor Tyukasz (LogMeIn Inc) for discovering and researching this
8499 * A flaw in OBJ_obj2txt may cause pretty printing functions such as
8500 X509_name_oneline, X509_name_print_ex et al. to leak some information
8501 from the stack. Applications may be affected if they echo pretty printing
8502 output to the attacker.
8504 Thanks to Ivan Fratric (Google) for discovering this issue.
8507 *Emilia Käsper, and Steve Henson*
8509 * Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
8510 for corner cases. (Certain input points at infinity could lead to
8511 bogus results, with non-infinity inputs mapped to infinity too.)
8515 ### Changes between 1.0.0l and 1.0.0m [5 Jun 2014]
8517 * Fix for SSL/TLS MITM flaw. An attacker using a carefully crafted
8518 handshake can force the use of weak keying material in OpenSSL
8519 SSL/TLS clients and servers.
8521 Thanks to KIKUCHI Masashi (Lepidum Co. Ltd.) for discovering and
8522 researching this issue. ([CVE-2014-0224])
8524 *KIKUCHI Masashi, Steve Henson*
8526 * Fix DTLS recursion flaw. By sending an invalid DTLS handshake to an
8527 OpenSSL DTLS client the code can be made to recurse eventually crashing
8530 Thanks to Imre Rad (Search-Lab Ltd.) for discovering this issue.
8533 *Imre Rad, Steve Henson*
8535 * Fix DTLS invalid fragment vulnerability. A buffer overrun attack can
8536 be triggered by sending invalid DTLS fragments to an OpenSSL DTLS
8537 client or server. This is potentially exploitable to run arbitrary
8538 code on a vulnerable client or server.
8540 Thanks to Jüri Aedla for reporting this issue. ([CVE-2014-0195])
8542 *Jüri Aedla, Steve Henson*
8544 * Fix bug in TLS code where clients enable anonymous ECDH ciphersuites
8545 are subject to a denial of service attack.
8547 Thanks to Felix Gröbert and Ivan Fratric at Google for discovering
8548 this issue. ([CVE-2014-3470])
8550 *Felix Gröbert, Ivan Fratric, Steve Henson*
8552 * Harmonize version and its documentation. -f flag is used to display
8555 *mancha <mancha1@zoho.com>*
8557 * Fix eckey_priv_encode so it immediately returns an error upon a failure
8558 in i2d_ECPrivateKey.
8560 *mancha <mancha1@zoho.com>*
8562 * Fix some double frees. These are not thought to be exploitable.
8564 *mancha <mancha1@zoho.com>*
8566 * Fix for the attack described in the paper "Recovering OpenSSL
8567 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
8568 by Yuval Yarom and Naomi Benger. Details can be obtained from:
8569 <http://eprint.iacr.org/2014/140>
8571 Thanks to Yuval Yarom and Naomi Benger for discovering this
8572 flaw and to Yuval Yarom for supplying a fix ([CVE-2014-0076])
8574 *Yuval Yarom and Naomi Benger*
8576 ### Changes between 1.0.0k and 1.0.0l [6 Jan 2014]
8578 * Keep original DTLS digest and encryption contexts in retransmission
8579 structures so we can use the previous session parameters if they need
8580 to be resent. ([CVE-2013-6450])
8584 * Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which
8585 avoids preferring ECDHE-ECDSA ciphers when the client appears to be
8586 Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for
8587 several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug
8588 is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing
8589 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer.
8591 *Rob Stradling, Adam Langley*
8593 ### Changes between 1.0.0j and 1.0.0k [5 Feb 2013]
8595 * Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
8597 This addresses the flaw in CBC record processing discovered by
8598 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
8599 at: <http://www.isg.rhul.ac.uk/tls/>
8601 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
8602 Security Group at Royal Holloway, University of London
8603 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
8604 Emilia Käsper for the initial patch.
8607 *Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson*
8609 * Return an error when checking OCSP signatures when key is NULL.
8610 This fixes a DoS attack. ([CVE-2013-0166])
8614 * Call OCSP Stapling callback after ciphersuite has been chosen, so
8615 the right response is stapled. Also change SSL_get_certificate()
8616 so it returns the certificate actually sent.
8617 See <http://rt.openssl.org/Ticket/Display.html?id=2836>.
8618 (This is a backport)
8620 *Rob Stradling <rob.stradling@comodo.com>*
8622 * Fix possible deadlock when decoding public keys.
8626 ### Changes between 1.0.0i and 1.0.0j [10 May 2012]
8628 [NB: OpenSSL 1.0.0i and later 1.0.0 patch levels were released after
8631 * Sanity check record length before skipping explicit IV in DTLS
8634 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
8635 fuzzing as a service testing platform.
8640 * Initialise tkeylen properly when encrypting CMS messages.
8641 Thanks to Solar Designer of Openwall for reporting this issue.
8645 ### Changes between 1.0.0h and 1.0.0i [19 Apr 2012]
8647 * Check for potentially exploitable overflows in asn1_d2i_read_bio
8648 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
8649 in CRYPTO_realloc_clean.
8651 Thanks to Tavis Ormandy, Google Security Team, for discovering this
8652 issue and to Adam Langley <agl@chromium.org> for fixing it.
8655 *Adam Langley (Google), Tavis Ormandy, Google Security Team*
8657 ### Changes between 1.0.0g and 1.0.0h [12 Mar 2012]
8659 * Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
8660 in CMS and PKCS7 code. When RSA decryption fails use a random key for
8661 content decryption and always return the same error. Note: this attack
8662 needs on average 2^20 messages so it only affects automated senders. The
8663 old behaviour can be re-enabled in the CMS code by setting the
8664 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
8665 an MMA defence is not necessary.
8666 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
8667 this issue. ([CVE-2012-0884])
8671 * Fix CVE-2011-4619: make sure we really are receiving a
8672 client hello before rejecting multiple SGC restarts. Thanks to
8673 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
8677 ### Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
8679 * Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
8680 Thanks to Antonio Martin, Enterprise Secure Access Research and
8681 Development, Cisco Systems, Inc. for discovering this bug and
8682 preparing a fix. ([CVE-2012-0050])
8686 ### Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
8688 * Nadhem Alfardan and Kenny Paterson have discovered an extension
8689 of the Vaudenay padding oracle attack on CBC mode encryption
8690 which enables an efficient plaintext recovery attack against
8691 the OpenSSL implementation of DTLS. Their attack exploits timing
8692 differences arising during decryption processing. A research
8693 paper describing this attack can be found at:
8694 <http://www.isg.rhul.ac.uk/~kp/dtls.pdf>
8695 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
8696 Security Group at Royal Holloway, University of London
8697 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
8698 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
8699 for preparing the fix. ([CVE-2011-4108])
8701 *Robin Seggelmann, Michael Tuexen*
8703 * Clear bytes used for block padding of SSL 3.0 records.
8706 *Adam Langley (Google)*
8708 * Only allow one SGC handshake restart for SSL/TLS. Thanks to George
8709 Kadianakis <desnacked@gmail.com> for discovering this issue and
8710 Adam Langley for preparing the fix. ([CVE-2011-4619])
8712 *Adam Langley (Google)*
8714 * Check parameters are not NULL in GOST ENGINE. ([CVE-2012-0027])
8716 *Andrey Kulikov <amdeich@gmail.com>*
8718 * Prevent malformed RFC3779 data triggering an assertion failure.
8719 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
8720 and Rob Austein <sra@hactrn.net> for fixing it. ([CVE-2011-4577])
8722 *Rob Austein <sra@hactrn.net>*
8724 * Improved PRNG seeding for VOS.
8726 *Paul Green <Paul.Green@stratus.com>*
8728 * Fix ssl_ciph.c set-up race.
8730 *Adam Langley (Google)*
8732 * Fix spurious failures in ecdsatest.c.
8734 *Emilia Käsper (Google)*
8736 * Fix the BIO_f_buffer() implementation (which was mixing different
8737 interpretations of the `..._len` fields).
8739 *Adam Langley (Google)*
8741 * Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
8742 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
8743 threads won't reuse the same blinding coefficients.
8745 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
8746 lock to call BN_BLINDING_invert_ex, and avoids one use of
8747 BN_BLINDING_update for each BN_BLINDING structure (previously,
8748 the last update always remained unused).
8750 *Emilia Käsper (Google)*
8752 * In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
8754 *Bob Buckholz (Google)*
8756 ### Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
8758 * Fix bug where CRLs with nextUpdate in the past are sometimes accepted
8759 by initialising X509_STORE_CTX properly. ([CVE-2011-3207])
8761 *Kaspar Brand <ossl@velox.ch>*
8763 * Fix SSL memory handling for (EC)DH ciphersuites, in particular
8764 for multi-threaded use of ECDH. ([CVE-2011-3210])
8766 *Adam Langley (Google)*
8768 * Fix x509_name_ex_d2i memory leak on bad inputs.
8772 * Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
8773 signature public key algorithm by using OID xref utilities instead.
8774 Before this you could only use some ECC ciphersuites with SHA1 only.
8778 * Add protection against ECDSA timing attacks as mentioned in the paper
8779 by Billy Bob Brumley and Nicola Tuveri, see:
8780 <http://eprint.iacr.org/2011/232.pdf>
8782 *Billy Bob Brumley and Nicola Tuveri*
8784 ### Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
8786 * Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
8788 *Neel Mehta, Adam Langley, Bodo Moeller (Google)*
8790 * Fix bug in string printing code: if *any* escaping is enabled we must
8791 escape the escape character (backslash) or the resulting string is
8796 ### Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
8798 * Disable code workaround for ancient and obsolete Netscape browsers
8799 and servers: an attacker can use it in a ciphersuite downgrade attack.
8800 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
8804 * Fixed J-PAKE implementation error, originally discovered by
8805 Sebastien Martini, further info and confirmation from Stefan
8806 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
8810 ### Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
8812 * Fix extension code to avoid race conditions which can result in a buffer
8813 overrun vulnerability: resumed sessions must not be modified as they can
8814 be shared by multiple threads. CVE-2010-3864
8818 * Fix WIN32 build system to correctly link an ENGINE directory into
8823 ### Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
8825 * Check return value of int_rsa_verify in pkey_rsa_verifyrecover
8828 *Steve Henson, Peter-Michael Hager <hager@dortmund.net>*
8830 ### Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
8832 * Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
8833 context. The operation can be customised via the ctrl mechanism in
8834 case ENGINEs want to include additional functionality.
8838 * Tolerate yet another broken PKCS#8 key format: private key value negative.
8842 * Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
8843 output hashes compatible with older versions of OpenSSL.
8845 *Willy Weisz <weisz@vcpc.univie.ac.at>*
8847 * Fix compression algorithm handling: if resuming a session use the
8848 compression algorithm of the resumed session instead of determining
8849 it from client hello again. Don't allow server to change algorithm.
8853 * Add load_crls() function to commands tidying load_certs() too. Add option
8854 to verify utility to allow additional CRLs to be included.
8858 * Update OCSP request code to permit adding custom headers to the request:
8859 some responders need this.
8863 * The function EVP_PKEY_sign() returns <=0 on error: check return code
8866 *Julia Lawall <julia@diku.dk>*
8868 * Update verify callback code in `apps/s_cb.c` and `apps/verify.c`, it
8869 needlessly dereferenced structures, used obsolete functions and
8870 didn't handle all updated verify codes correctly.
8874 * Disable MD2 in the default configuration.
8878 * In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
8879 indicate the initial BIO being pushed or popped. This makes it possible
8880 to determine whether the BIO is the one explicitly called or as a result
8881 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
8882 it handles reference counts correctly and doesn't zero out the I/O bio
8883 when it is not being explicitly popped. WARNING: applications which
8884 included workarounds for the old buggy behaviour will need to be modified
8885 or they could free up already freed BIOs.
8889 * Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
8890 renaming to all platforms (within the 0.9.8 branch, this was
8891 done conditionally on Netware platforms to avoid a name clash).
8893 *Guenter <lists@gknw.net>*
8895 * Add ECDHE and PSK support to DTLS.
8897 *Michael Tuexen <tuexen@fh-muenster.de>*
8899 * Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
8904 * Add "missing" function EVP_MD_flags() (without this the only way to
8905 retrieve a digest flags is by accessing the structure directly. Update
8906 `EVP_MD_do_all*()` and `EVP_CIPHER_do_all*()` to include the name a digest
8907 or cipher is registered as in the "from" argument. Print out all
8908 registered digests in the dgst usage message instead of manually
8909 attempting to work them out.
8913 * If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
8914 this allows the use of compression and extensions. Change default cipher
8915 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
8916 by default unless an application cipher string requests it.
8920 * Alter match criteria in PKCS12_parse(). It used to try to use local
8921 key ids to find matching certificates and keys but some PKCS#12 files
8922 don't follow the (somewhat unwritten) rules and this strategy fails.
8923 Now just gather all certificates together and the first private key
8924 then look for the first certificate that matches the key.
8928 * Support use of registered digest and cipher names for dgst and cipher
8929 commands instead of having to add each one as a special case. So now
8936 openssl dgst -sha256 foo
8938 and this works for ENGINE based algorithms too.
8942 * Update Gost ENGINE to support parameter files.
8944 *Victor B. Wagner <vitus@cryptocom.ru>*
8946 * Support GeneralizedTime in ca utility.
8948 *Oliver Martin <oliver@volatilevoid.net>, Steve Henson*
8950 * Enhance the hash format used for certificate directory links. The new
8951 form uses the canonical encoding (meaning equivalent names will work
8952 even if they aren't identical) and uses SHA1 instead of MD5. This form
8953 is incompatible with the older format and as a result c_rehash should
8954 be used to rebuild symbolic links.
8958 * Make PKCS#8 the default write format for private keys, replacing the
8959 traditional format. This form is standardised, more secure and doesn't
8960 include an implicit MD5 dependency.
8964 * Add a $gcc_devteam_warn option to Configure. The idea is that any code
8965 committed to OpenSSL should pass this lot as a minimum.
8969 * Add session ticket override functionality for use by EAP-FAST.
8971 *Jouni Malinen <j@w1.fi>*
8973 * Modify HMAC functions to return a value. Since these can be implemented
8974 in an ENGINE errors can occur.
8978 * Type-checked OBJ_bsearch_ex.
8982 * Type-checked OBJ_bsearch. Also some constification necessitated
8983 by type-checking. Still to come: TXT_DB, bsearch(?),
8984 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
8989 * New function OPENSSL_gmtime_adj() to add a specific number of days and
8990 seconds to a tm structure directly, instead of going through OS
8991 specific date routines. This avoids any issues with OS routines such
8992 as the year 2038 bug. New `*_adj()` functions for ASN1 time structures
8993 and X509_time_adj_ex() to cover the extended range. The existing
8994 X509_time_adj() is still usable and will no longer have any date issues.
8998 * Delta CRL support. New use deltas option which will attempt to locate
8999 and search any appropriate delta CRLs available.
9001 This work was sponsored by Google.
9005 * Support for CRLs partitioned by reason code. Reorganise CRL processing
9006 code and add additional score elements. Validate alternate CRL paths
9007 as part of the CRL checking and indicate a new error "CRL path validation
9008 error" in this case. Applications wanting additional details can use
9009 the verify callback and check the new "parent" field. If this is not
9010 NULL CRL path validation is taking place. Existing applications won't
9011 see this because it requires extended CRL support which is off by
9014 This work was sponsored by Google.
9018 * Support for freshest CRL extension.
9020 This work was sponsored by Google.
9024 * Initial indirect CRL support. Currently only supported in the CRLs
9025 passed directly and not via lookup. Process certificate issuer
9026 CRL entry extension and lookup CRL entries by bother issuer name
9027 and serial number. Check and process CRL issuer entry in IDP extension.
9029 This work was sponsored by Google.
9033 * Add support for distinct certificate and CRL paths. The CRL issuer
9034 certificate is validated separately in this case. Only enabled if
9035 an extended CRL support flag is set: this flag will enable additional
9036 CRL functionality in future.
9038 This work was sponsored by Google.
9042 * Add support for policy mappings extension.
9044 This work was sponsored by Google.
9048 * Fixes to pathlength constraint, self issued certificate handling,
9049 policy processing to align with RFC3280 and PKITS tests.
9051 This work was sponsored by Google.
9055 * Support for name constraints certificate extension. DN, email, DNS
9056 and URI types are currently supported.
9058 This work was sponsored by Google.
9062 * To cater for systems that provide a pointer-based thread ID rather
9063 than numeric, deprecate the current numeric thread ID mechanism and
9064 replace it with a structure and associated callback type. This
9065 mechanism allows a numeric "hash" to be extracted from a thread ID in
9066 either case, and on platforms where pointers are larger than 'long',
9067 mixing is done to help ensure the numeric 'hash' is usable even if it
9068 can't be guaranteed unique. The default mechanism is to use "&errno"
9069 as a pointer-based thread ID to distinguish between threads.
9071 Applications that want to provide their own thread IDs should now use
9072 CRYPTO_THREADID_set_callback() to register a callback that will call
9073 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
9075 Note that ERR_remove_state() is now deprecated, because it is tied
9076 to the assumption that thread IDs are numeric. ERR_remove_state(0)
9077 to free the current thread's error state should be replaced by
9078 ERR_remove_thread_state(NULL).
9080 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
9081 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
9082 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
9083 application was previously providing a numeric thread callback that
9084 was inappropriate for distinguishing threads, then uniqueness might
9085 have been obtained with &errno that happened immediately in the
9086 intermediate development versions of OpenSSL; this is no longer the
9087 case, the numeric thread callback will now override the automatic use
9090 *Geoff Thorpe, with help from Bodo Moeller*
9092 * Initial support for different CRL issuing certificates. This covers a
9093 simple case where the self issued certificates in the chain exist and
9094 the real CRL issuer is higher in the existing chain.
9096 This work was sponsored by Google.
9100 * Removed effectively defunct crypto/store from the build.
9104 * Revamp of STACK to provide stronger type-checking. Still to come:
9105 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
9106 ASN1_STRING, CONF_VALUE.
9110 * Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
9111 RAM on SSL connections. This option can save about 34k per idle SSL.
9115 * Revamp of LHASH to provide stronger type-checking. Still to come:
9116 STACK, TXT_DB, bsearch, qsort.
9120 * Initial support for Cryptographic Message Syntax (aka CMS) based
9121 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
9122 support for data, signedData, compressedData, digestedData and
9123 encryptedData, envelopedData types included. Scripts to check against
9124 RFC4134 examples draft and interop and consistency checks of many
9125 content types and variants.
9129 * Add options to enc utility to support use of zlib compression BIO.
9133 * Extend mk1mf to support importing of options and assembly language
9134 files from Configure script, currently only included in VC-WIN32.
9135 The assembly language rules can now optionally generate the source
9136 files from the associated perl scripts.
9140 * Implement remaining functionality needed to support GOST ciphersuites.
9141 Interop testing has been performed using CryptoPro implementations.
9143 *Victor B. Wagner <vitus@cryptocom.ru>*
9145 * s390x assembler pack.
9149 * ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
9154 * Implement Opaque PRF Input TLS extension as specified in
9155 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
9156 official specification yet and no extension type assignment by
9157 IANA exists, this extension (for now) will have to be explicitly
9158 enabled when building OpenSSL by providing the extension number
9159 to use. For example, specify an option
9161 -DTLSEXT_TYPE_opaque_prf_input=0x9527
9163 to the "config" or "Configure" script to enable the extension,
9164 assuming extension number 0x9527 (which is a completely arbitrary
9165 and unofficial assignment based on the MD5 hash of the Internet
9166 Draft). Note that by doing so, you potentially lose
9167 interoperability with other TLS implementations since these might
9168 be using the same extension number for other purposes.
9170 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
9171 opaque PRF input value to use in the handshake. This will create
9172 an internal copy of the length-'len' string at 'src', and will
9173 return non-zero for success.
9175 To get more control and flexibility, provide a callback function
9178 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
9179 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
9183 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
9186 Callback function 'cb' will be called in handshakes, and is
9187 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
9188 Argument 'arg' is for application purposes (the value as given to
9189 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
9190 be provided to the callback function). The callback function
9191 has to return non-zero to report success: usually 1 to use opaque
9192 PRF input just if possible, or 2 to enforce use of the opaque PRF
9193 input. In the latter case, the library will abort the handshake
9194 if opaque PRF input is not successfully negotiated.
9196 Arguments 'peerinput' and 'len' given to the callback function
9197 will always be NULL and 0 in the case of a client. A server will
9198 see the client's opaque PRF input through these variables if
9199 available (NULL and 0 otherwise). Note that if the server
9200 provides an opaque PRF input, the length must be the same as the
9201 length of the client's opaque PRF input.
9203 Note that the callback function will only be called when creating
9204 a new session (session resumption can resume whatever was
9205 previously negotiated), and will not be called in SSL 2.0
9206 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
9207 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
9208 for applications that need to enforce opaque PRF input.
9212 * Update ssl code to support digests other than SHA1+MD5 for handshake
9215 *Victor B. Wagner <vitus@cryptocom.ru>*
9217 * Add RFC4507 support to OpenSSL. This includes the corrections in
9218 RFC4507bis. The encrypted ticket format is an encrypted encoded
9219 SSL_SESSION structure, that way new session features are automatically
9222 If a client application caches session in an SSL_SESSION structure
9223 support is transparent because tickets are now stored in the encoded
9226 The SSL_CTX structure automatically generates keys for ticket
9227 protection in servers so again support should be possible
9228 with no application modification.
9230 If a client or server wishes to disable RFC4507 support then the option
9231 SSL_OP_NO_TICKET can be set.
9233 Add a TLS extension debugging callback to allow the contents of any client
9234 or server extensions to be examined.
9236 This work was sponsored by Google.
9240 * Final changes to avoid use of pointer pointer casts in OpenSSL.
9241 OpenSSL should now compile cleanly on gcc 4.2
9243 *Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson*
9245 * Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
9246 support including streaming MAC support: this is required for GOST
9247 ciphersuite support.
9249 *Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson*
9251 * Add option -stream to use PKCS#7 streaming in smime utility. New
9252 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
9253 to output in BER and PEM format.
9257 * Experimental support for use of HMAC via EVP_PKEY interface. This
9258 allows HMAC to be handled via the `EVP_DigestSign*()` interface. The
9259 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
9260 ENGINE support for HMAC keys which are unextractable. New -mac and
9261 -macopt options to dgst utility.
9265 * New option -sigopt to dgst utility. Update dgst to use
9266 `EVP_Digest{Sign,Verify}*`. These two changes make it possible to use
9267 alternative signing parameters such as X9.31 or PSS in the dgst
9272 * Change ssl_cipher_apply_rule(), the internal function that does
9273 the work each time a ciphersuite string requests enabling
9274 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
9275 removing ("!foo+bar") a class of ciphersuites: Now it maintains
9276 the order of disabled ciphersuites such that those ciphersuites
9277 that most recently went from enabled to disabled not only stay
9278 in order with respect to each other, but also have higher priority
9279 than other disabled ciphersuites the next time ciphersuites are
9282 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
9283 the same ciphersuites as with "HIGH" alone, but in a specific
9284 order where the PSK ciphersuites come first (since they are the
9285 most recently disabled ciphersuites when "HIGH" is parsed).
9287 Also, change ssl_create_cipher_list() (using this new
9288 functionality) such that between otherwise identical
9289 ciphersuites, ephemeral ECDH is preferred over ephemeral DH in
9294 * Change ssl_create_cipher_list() so that it automatically
9295 arranges the ciphersuites in reasonable order before starting
9296 to process the rule string. Thus, the definition for "DEFAULT"
9297 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
9298 remains equivalent to `"AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH"`.
9299 This makes it much easier to arrive at a reasonable default order
9300 in applications for which anonymous ciphers are OK (meaning
9301 that you can't actually use DEFAULT).
9303 *Bodo Moeller; suggested by Victor Duchovni*
9305 * Split the SSL/TLS algorithm mask (as used for ciphersuite string
9306 processing) into multiple integers instead of setting
9307 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
9308 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
9309 (These masks as well as the individual bit definitions are hidden
9310 away into the non-exported interface ssl/ssl_locl.h, so this
9311 change to the definition of the SSL_CIPHER structure shouldn't
9312 affect applications.) This give us more bits for each of these
9313 categories, so there is no longer a need to coagulate AES128 and
9314 AES256 into a single algorithm bit, and to coagulate Camellia128
9315 and Camellia256 into a single algorithm bit, which has led to all
9318 Thus, among other things, the kludge introduced in 0.9.7m and
9319 0.9.8e for masking out AES256 independently of AES128 or masking
9320 out Camellia256 independently of AES256 is not needed here in 0.9.9.
9322 With the change, we also introduce new ciphersuite aliases that
9323 so far were missing: "AES128", "AES256", "CAMELLIA128", and
9328 * Add support for dsa-with-SHA224 and dsa-with-SHA256.
9329 Use the leftmost N bytes of the signature input if the input is
9330 larger than the prime q (with N being the size in bytes of q).
9334 * Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
9335 it yet and it is largely untested.
9339 * Add support for the ecdsa-with-SHA224/256/384/512 signature types.
9343 * Initial incomplete changes to avoid need for function casts in OpenSSL
9344 some compilers (gcc 4.2 and later) reject their use. Safestack is
9345 reimplemented. Update ASN1 to avoid use of legacy functions.
9349 * Win32/64 targets are linked with Winsock2.
9353 * Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
9354 to external functions. This can be used to increase CRL handling
9355 efficiency especially when CRLs are very large by (for example) storing
9356 the CRL revoked certificates in a database.
9360 * Overhaul of by_dir code. Add support for dynamic loading of CRLs so
9361 new CRLs added to a directory can be used. New command line option
9362 -verify_return_error to s_client and s_server. This causes real errors
9363 to be returned by the verify callback instead of carrying on no matter
9364 what. This reflects the way a "real world" verify callback would behave.
9368 * GOST engine, supporting several GOST algorithms and public key formats.
9369 Kindly donated by Cryptocom.
9373 * Partial support for Issuing Distribution Point CRL extension. CRLs
9374 partitioned by DP are handled but no indirect CRL or reason partitioning
9375 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
9376 selected via a scoring technique which handles IDP and AKID in CRLs.
9380 * New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
9381 will ultimately be used for all verify operations: this will remove the
9382 X509_STORE dependency on certificate verification and allow alternative
9383 lookup methods. X509_STORE based implementations of these two callbacks.
9387 * Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
9388 Modify get_crl() to find a valid (unexpired) CRL if possible.
9392 * New function X509_CRL_match() to check if two CRLs are identical. Normally
9393 this would be called X509_CRL_cmp() but that name is already used by
9394 a function that just compares CRL issuer names. Cache several CRL
9395 extensions in X509_CRL structure and cache CRLDP in X509.
9399 * Store a "canonical" representation of X509_NAME structure (ASN1 Name)
9400 this maps equivalent X509_NAME structures into a consistent structure.
9401 Name comparison can then be performed rapidly using memcmp().
9405 * Non-blocking OCSP request processing. Add -timeout option to ocsp
9410 * Allow digests to supply their own micalg string for S/MIME type using
9411 the ctrl EVP_MD_CTRL_MICALG.
9415 * During PKCS7 signing pass the PKCS7 SignerInfo structure to the
9416 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
9417 ctrl. It can then customise the structure before and/or after signing
9422 * New function OBJ_add_sigid() to allow application defined signature OIDs
9423 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
9424 to free up any added signature OIDs.
9428 * New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
9429 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
9430 digest and cipher tables. New options added to openssl utility:
9431 list-message-digest-algorithms and list-cipher-algorithms.
9435 * Change the array representation of binary polynomials: the list
9436 of degrees of non-zero coefficients is now terminated with -1.
9437 Previously it was terminated with 0, which was also part of the
9438 value; thus, the array representation was not applicable to
9439 polynomials where t^0 has coefficient zero. This change makes
9440 the array representation useful in a more general context.
9444 * Various modifications and fixes to SSL/TLS cipher string
9445 handling. For ECC, the code now distinguishes between fixed ECDH
9446 with RSA certificates on the one hand and with ECDSA certificates
9447 on the other hand, since these are separate ciphersuites. The
9448 unused code for Fortezza ciphersuites has been removed.
9450 For consistency with EDH, ephemeral ECDH is now called "EECDH"
9451 (not "ECDHE"). For consistency with the code for DH
9452 certificates, use of ECDH certificates is now considered ECDH
9453 authentication, not RSA or ECDSA authentication (the latter is
9454 merely the CA's signing algorithm and not actively used in the
9457 The temporary ciphersuite alias "ECCdraft" is no longer
9458 available, and ECC ciphersuites are no longer excluded from "ALL"
9459 and "DEFAULT". The following aliases now exist for RFC 4492
9460 ciphersuites, most of these by analogy with the DH case:
9462 kECDHr - ECDH cert, signed with RSA
9463 kECDHe - ECDH cert, signed with ECDSA
9464 kECDH - ECDH cert (signed with either RSA or ECDSA)
9465 kEECDH - ephemeral ECDH
9466 ECDH - ECDH cert or ephemeral ECDH
9472 AECDH - anonymous ECDH
9473 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
9477 * Add additional S/MIME capabilities for AES and GOST ciphers if supported.
9478 Use correct micalg parameters depending on digest(s) in signed message.
9482 * Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
9483 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
9487 * Initial engine support for EVP_PKEY_METHOD. New functions to permit
9488 an engine to register a method. Add ENGINE lookups for methods and
9489 functional reference processing.
9493 * New functions `EVP_Digest{Sign,Verify)*`. These are enhanced versions of
9494 `EVP_{Sign,Verify}*` which allow an application to customise the signature
9499 * New -resign option to smime utility. This adds one or more signers
9500 to an existing PKCS#7 signedData structure. Also -md option to use an
9501 alternative message digest algorithm for signing.
9505 * Tidy up PKCS#7 routines and add new functions to make it easier to
9506 create PKCS7 structures containing multiple signers. Update smime
9507 application to support multiple signers.
9511 * New -macalg option to pkcs12 utility to allow setting of an alternative
9516 * Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
9517 Reorganize PBE internals to lookup from a static table using NIDs,
9518 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
9519 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
9520 PRF which will be automatically used with PBES2.
9524 * Replace the algorithm specific calls to generate keys in "req" with the
9529 * Update PKCS#7 enveloped data routines to use new API. This is now
9530 supported by any public key method supporting the encrypt operation. A
9531 ctrl is added to allow the public key algorithm to examine or modify
9532 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
9537 * Add a ctrl to asn1 method to allow a public key algorithm to express
9538 a default digest type to use. In most cases this will be SHA1 but some
9539 algorithms (such as GOST) need to specify an alternative digest. The
9540 return value indicates how strong the preference is 1 means optional and
9541 2 is mandatory (that is it is the only supported type). Modify
9542 ASN1_item_sign() to accept a NULL digest argument to indicate it should
9543 use the default md. Update openssl utilities to use the default digest
9544 type for signing if it is not explicitly indicated.
9548 * Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
9549 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
9550 signing method from the key type. This effectively removes the link
9551 between digests and public key types.
9555 * Add an OID cross reference table and utility functions. Its purpose is to
9556 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
9557 rsaEncryption. This will allow some of the algorithm specific hackery
9558 needed to use the correct OID to be removed.
9562 * Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
9563 structures for PKCS7_sign(). They are now set up by the relevant public
9568 * Add provisional EC pkey method with support for ECDSA and ECDH.
9572 * Add support for key derivation (agreement) in the API, DH method and
9577 * Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
9578 public and private key formats. As a side effect these add additional
9579 command line functionality not previously available: DSA signatures can be
9580 generated and verified using pkeyutl and DH key support and generation in
9587 *Oliver Tappe <zooey@hirschkaefer.de>*
9589 * New make target "install_html_docs" installs HTML renditions of the
9592 *Oliver Tappe <zooey@hirschkaefer.de>*
9594 * New utility "genpkey" this is analogous to "genrsa" etc except it can
9595 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
9596 support key and parameter generation and add initial key generation
9597 functionality for RSA.
9601 * Add functions for main EVP_PKEY_method operations. The undocumented
9602 functions `EVP_PKEY_{encrypt,decrypt}` have been renamed to
9603 `EVP_PKEY_{encrypt,decrypt}_old`.
9607 * Initial definitions for EVP_PKEY_METHOD. This will be a high level public
9608 key API, doesn't do much yet.
9612 * New function EVP_PKEY_asn1_get0_info() to retrieve information about
9613 public key algorithms. New option to openssl utility:
9614 "list-public-key-algorithms" to print out info.
9618 * Implement the Supported Elliptic Curves Extension for
9619 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
9623 * Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
9624 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
9628 * New utilities pkey and pkeyparam. These are similar to algorithm specific
9629 utilities such as rsa, dsa, dsaparam etc except they process any key
9634 * Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
9635 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
9636 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
9641 * Initial support for pluggable public key ASN1.
9642 De-spaghettify the public key ASN1 handling. Move public and private
9643 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
9644 algorithm specific handling to a single module within the relevant
9645 algorithm directory. Add functions to allow (near) opaque processing
9646 of public and private key structures.
9650 * Implement the Supported Point Formats Extension for
9651 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
9655 * Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
9656 for the psk identity [hint] and the psk callback functions to the
9657 SSL_SESSION, SSL and SSL_CTX structure.
9660 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
9664 SSL_CTX_use_psk_identity_hint
9665 SSL_get_psk_identity_hint
9666 SSL_get_psk_identity
9667 SSL_use_psk_identity_hint
9669 *Mika Kousa and Pasi Eronen of Nokia Corporation*
9671 * Add RFC 3161 compliant time stamp request creation, response generation
9672 and response verification functionality.
9674 *Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project*
9676 * Add initial support for TLS extensions, specifically for the server_name
9677 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
9678 have new members for a hostname. The SSL data structure has an
9679 additional member `SSL_CTX *initial_ctx` so that new sessions can be
9680 stored in that context to allow for session resumption, even after the
9681 SSL has been switched to a new SSL_CTX in reaction to a client's
9682 server_name extension.
9684 New functions (subject to change):
9686 SSL_get_servername()
9687 SSL_get_servername_type()
9690 New CTRL codes and macros (subject to change):
9692 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
9693 - SSL_CTX_set_tlsext_servername_callback()
9694 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
9695 - SSL_CTX_set_tlsext_servername_arg()
9696 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
9698 openssl s_client has a new '-servername ...' option.
9700 openssl s_server has new options '-servername_host ...', '-cert2 ...',
9701 '-key2 ...', '-servername_fatal' (subject to change). This allows
9702 testing the HostName extension for a specific single hostname ('-cert'
9703 and '-key' remain fallbacks for handshakes without HostName
9704 negotiation). If the unrecognized_name alert has to be sent, this by
9705 default is a warning; it becomes fatal with the '-servername_fatal'
9708 *Peter Sylvester, Remy Allais, Christophe Renou*
9710 * Whirlpool hash implementation is added.
9714 * BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
9715 bn(64,32). Because of instruction set limitations it doesn't have
9716 any negative impact on performance. This was done mostly in order
9717 to make it possible to share assembler modules, such as bn_mul_mont
9718 implementations, between 32- and 64-bit builds without hassle.
9722 * Move code previously exiled into file crypto/ec/ec2_smpt.c
9723 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
9728 * New candidate for BIGNUM assembler implementation, bn_mul_mont,
9729 dedicated Montgomery multiplication procedure, is introduced.
9730 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
9731 "64-bit" performance on certain 32-bit targets.
9735 * New option SSL_OP_NO_COMP to disable use of compression selectively
9736 in SSL structures. New SSL ctrl to set maximum send fragment size.
9737 Save memory by setting the I/O buffer sizes dynamically instead of
9738 using the maximum available value.
9742 * New option -V for 'openssl ciphers'. This prints the ciphersuite code
9743 in addition to the text details.
9747 * Very, very preliminary EXPERIMENTAL support for printing of general
9748 ASN1 structures. This currently produces rather ugly output and doesn't
9749 handle several customised structures at all.
9753 * Integrated support for PVK file format and some related formats such
9754 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
9755 these in the 'rsa' and 'dsa' utilities.
9759 * Support for PKCS#1 RSAPublicKey format on rsa utility command line.
9763 * Remove the ancient ASN1_METHOD code. This was only ever used in one
9764 place for the (very old) "NETSCAPE" format certificates which are now
9765 handled using new ASN1 code equivalents.
9769 * Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
9770 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
9771 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
9775 * Modify CRL distribution points extension code to print out previously
9776 unsupported fields. Enhance extension setting code to allow setting of
9781 * Add print and set support for Issuing Distribution Point CRL extension.
9785 * Change 'Configure' script to enable Camellia by default.
9792 ### Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
9794 * When rejecting SSL/TLS records due to an incorrect version number, never
9795 update s->server with a new major version number. As of
9796 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
9797 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
9798 the previous behavior could result in a read attempt at NULL when
9799 receiving specific incorrect SSL/TLS records once record payload
9800 protection is active. ([CVE-2010-0740])
9802 *Bodo Moeller, Adam Langley <agl@chromium.org>*
9804 * Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
9805 could be crashed if the relevant tables were not present (e.g. chrooted).
9807 *Tomas Hoger <thoger@redhat.com>*
9809 ### Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
9811 * Always check bn_wexpand() return values for failure. ([CVE-2009-3245])
9813 *Martin Olsson, Neel Mehta*
9815 * Fix X509_STORE locking: Every 'objs' access requires a lock (to
9816 accommodate for stack sorting, always a write lock!).
9820 * On some versions of WIN32 Heap32Next is very slow. This can cause
9821 excessive delays in the RAND_poll(): over a minute. As a workaround
9822 include a time check in the inner Heap32Next loop too.
9826 * The code that handled flushing of data in SSL/TLS originally used the
9827 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
9828 the problem outlined in PR#1949. The fix suggested there however can
9829 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
9830 of Apache). So instead simplify the code to flush unconditionally.
9831 This should be fine since flushing with no data to flush is a no op.
9835 * Handle TLS versions 2.0 and later properly and correctly use the
9836 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
9837 off ancient servers have a habit of sticking around for a while...
9841 * Modify compression code so it frees up structures without using the
9842 ex_data callbacks. This works around a problem where some applications
9843 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
9844 restarting) then use compression (e.g. SSL with compression) later.
9845 This results in significant per-connection memory leaks and
9846 has caused some security issues including CVE-2008-1678 and
9851 * Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
9852 change when encrypting or decrypting.
9856 * Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
9857 connect and renegotiate with servers which do not support RI.
9858 Until RI is more widely deployed this option is enabled by default.
9862 * Add "missing" ssl ctrls to clear options and mode.
9866 * If client attempts to renegotiate and doesn't support RI respond with
9867 a no_renegotiation alert as required by RFC5746. Some renegotiating
9868 TLS clients will continue a connection gracefully when they receive
9869 the alert. Unfortunately OpenSSL mishandled this alert and would hang
9870 waiting for a server hello which it will never receive. Now we treat a
9871 received no_renegotiation alert as a fatal error. This is because
9872 applications requesting a renegotiation might well expect it to succeed
9873 and would have no code in place to handle the server denying it so the
9874 only safe thing to do is to terminate the connection.
9878 * Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
9879 peer supports secure renegotiation and 0 otherwise. Print out peer
9880 renegotiation support in s_client/s_server.
9884 * Replace the highly broken and deprecated SPKAC certification method with
9885 the updated NID creation version. This should correctly handle UTF8.
9889 * Implement RFC5746. Re-enable renegotiation but require the extension
9890 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
9891 turns out to be a bad idea. It has been replaced by
9892 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
9893 SSL_CTX_set_options(). This is really not recommended unless you
9894 know what you are doing.
9896 *Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson*
9898 * Fixes to stateless session resumption handling. Use initial_ctx when
9899 issuing and attempting to decrypt tickets in case it has changed during
9900 servername handling. Use a non-zero length session ID when attempting
9901 stateless session resumption: this makes it possible to determine if
9902 a resumption has occurred immediately after receiving server hello
9903 (several places in OpenSSL subtly assume this) instead of later in
9908 * The functions ENGINE_ctrl(), OPENSSL_isservice(),
9909 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
9910 fixes for a few places where the return code is not checked
9913 *Julia Lawall <julia@diku.dk>*
9915 * Add --strict-warnings option to Configure script to include devteam
9916 warnings in other configurations.
9920 * Add support for --libdir option and LIBDIR variable in makefiles. This
9921 makes it possible to install openssl libraries in locations which
9922 have names other than "lib", for example "/usr/lib64" which some
9925 *Steve Henson, based on patch from Jeremy Utley*
9927 * Don't allow the use of leading 0x80 in OIDs. This is a violation of
9928 X690 8.9.12 and can produce some misleading textual output of OIDs.
9930 *Steve Henson, reported by Dan Kaminsky*
9932 * Delete MD2 from algorithm tables. This follows the recommendation in
9933 several standards that it is not used in new applications due to
9934 several cryptographic weaknesses. For binary compatibility reasons
9935 the MD2 API is still compiled in by default.
9939 * Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
9944 * Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
9945 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
9948 *Guenter <lists@gknw.net>*
9950 * Fix the server certificate chain building code to use X509_verify_cert(),
9951 it used to have an ad-hoc builder which was unable to cope with anything
9952 other than a simple chain.
9954 *David Woodhouse <dwmw2@infradead.org>, Steve Henson*
9956 * Don't check self signed certificate signatures in X509_verify_cert()
9957 by default (a flag can override this): it just wastes time without
9958 adding any security. As a useful side effect self signed root CAs
9959 with non-FIPS digests are now usable in FIPS mode.
9963 * In dtls1_process_out_of_seq_message() the check if the current message
9964 is already buffered was missing. For every new message was memory
9965 allocated, allowing an attacker to perform an denial of service attack
9966 with sending out of seq handshake messages until there is no memory
9967 left. Additionally every future message was buffered, even if the
9968 sequence number made no sense and would be part of another handshake.
9969 So only messages with sequence numbers less than 10 in advance will be
9970 buffered. ([CVE-2009-1378])
9972 *Robin Seggelmann, discovered by Daniel Mentz*
9974 * Records are buffered if they arrive with a future epoch to be
9975 processed after finishing the corresponding handshake. There is
9976 currently no limitation to this buffer allowing an attacker to perform
9977 a DOS attack with sending records with future epochs until there is no
9978 memory left. This patch adds the pqueue_size() function to determine
9979 the size of a buffer and limits the record buffer to 100 entries.
9982 *Robin Seggelmann, discovered by Daniel Mentz*
9984 * Keep a copy of frag->msg_header.frag_len so it can be used after the
9985 parent structure is freed. ([CVE-2009-1379])
9989 * Handle non-blocking I/O properly in SSL_shutdown() call.
9991 *Darryl Miles <darryl-mailinglists@netbauds.net>*
9993 * Add `2.5.4.*` OIDs
9995 *Ilya O. <vrghost@gmail.com>*
9997 ### Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
9999 * Disable renegotiation completely - this fixes a severe security
10000 problem ([CVE-2009-3555]) at the cost of breaking all
10001 renegotiation. Renegotiation can be re-enabled by setting
10002 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
10003 run-time. This is really not recommended unless you know what
10008 ### Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
10010 * Don't set val to NULL when freeing up structures, it is freed up by
10011 underlying code. If `sizeof(void *) > sizeof(long)` this can result in
10012 zeroing past the valid field. ([CVE-2009-0789])
10014 *Paolo Ganci <Paolo.Ganci@AdNovum.CH>*
10016 * Fix bug where return value of CMS_SignerInfo_verify_content() was not
10017 checked correctly. This would allow some invalid signed attributes to
10018 appear to verify correctly. ([CVE-2009-0591])
10020 *Ivan Nestlerode <inestlerode@us.ibm.com>*
10022 * Reject UniversalString and BMPString types with invalid lengths. This
10023 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
10024 a legal length. ([CVE-2009-0590])
10028 * Set S/MIME signing as the default purpose rather than setting it
10029 unconditionally. This allows applications to override it at the store
10034 * Permit restricted recursion of ASN1 strings. This is needed in practice
10035 to handle some structures.
10039 * Improve efficiency of mem_gets: don't search whole buffer each time
10042 *Jeremy Shapiro <jnshapir@us.ibm.com>*
10044 * New -hex option for openssl rand.
10048 * Print out UTF8String and NumericString when parsing ASN1.
10052 * Support NumericString type for name components.
10056 * Allow CC in the environment to override the automatically chosen
10057 compiler. Note that nothing is done to ensure flags work with the
10062 ### Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
10064 * Properly check EVP_VerifyFinal() and similar return values
10067 *Ben Laurie, Bodo Moeller, Google Security Team*
10069 * Enable TLS extensions by default.
10073 * Allow the CHIL engine to be loaded, whether the application is
10074 multithreaded or not. (This does not release the developer from the
10075 obligation to set up the dynamic locking callbacks.)
10077 *Sander Temme <sander@temme.net>*
10079 * Use correct exit code if there is an error in dgst command.
10081 *Steve Henson; problem pointed out by Roland Dirlewanger*
10083 * Tweak Configure so that you need to say "experimental-jpake" to enable
10084 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
10088 * Add experimental JPAKE support, including demo authentication in
10089 s_client and s_server.
10093 * Set the comparison function in v3_addr_canonize().
10095 *Rob Austein <sra@hactrn.net>*
10097 * Add support for XMPP STARTTLS in s_client.
10099 *Philip Paeps <philip@freebsd.org>*
10101 * Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
10102 to ensure that even with this option, only ciphersuites in the
10103 server's preference list will be accepted. (Note that the option
10104 applies only when resuming a session, so the earlier behavior was
10105 just about the algorithm choice for symmetric cryptography.)
10109 ### Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
10111 * Fix NULL pointer dereference if a DTLS server received
10112 ChangeCipherSpec as first record ([CVE-2009-1386]).
10116 * Fix a state transition in s3_srvr.c and d1_srvr.c
10117 (was using SSL3_ST_CW_CLNT_HELLO_B, should be `..._ST_SW_SRVR_...`).
10119 *Nagendra Modadugu*
10121 * The fix in 0.9.8c that supposedly got rid of unsafe
10122 double-checked locking was incomplete for RSA blinding,
10123 addressing just one layer of what turns out to have been
10124 doubly unsafe triple-checked locking.
10126 So now fix this for real by retiring the MONT_HELPER macro
10127 in crypto/rsa/rsa_eay.c.
10129 *Bodo Moeller; problem pointed out by Marius Schilder*
10131 * Various precautionary measures:
10133 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
10135 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
10136 (NB: This would require knowledge of the secret session ticket key
10137 to exploit, in which case you'd be SOL either way.)
10139 - Change bn_nist.c so that it will properly handle input BIGNUMs
10140 outside the expected range.
10142 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
10145 *Neel Mehta, Bodo Moeller*
10147 * Allow engines to be "soft loaded" - i.e. optionally don't die if
10148 the load fails. Useful for distros.
10150 *Ben Laurie and the FreeBSD team*
10152 * Add support for Local Machine Keyset attribute in PKCS#12 files.
10156 * Fix BN_GF2m_mod_arr() top-bit cleanup code.
10160 * Expand ENGINE to support engine supplied SSL client certificate functions.
10162 This work was sponsored by Logica.
10166 * Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
10167 keystores. Support for SSL/TLS client authentication too.
10168 Not compiled unless enable-capieng specified to Configure.
10170 This work was sponsored by Logica.
10174 * Fix bug in X509_ATTRIBUTE creation: don't set attribute using
10175 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
10176 attribute creation routines such as certificate requests and PKCS#12
10181 ### Changes between 0.9.8g and 0.9.8h [28 May 2008]
10183 * Fix flaw if 'Server Key exchange message' is omitted from a TLS
10184 handshake which could lead to a client crash as found using the
10185 Codenomicon TLS test suite ([CVE-2008-1672])
10187 *Steve Henson, Mark Cox*
10189 * Fix double free in TLS server name extensions which could lead to
10190 a remote crash found by Codenomicon TLS test suite ([CVE-2008-0891])
10194 * Clear error queue in SSL_CTX_use_certificate_chain_file()
10196 Clear the error queue to ensure that error entries left from
10197 older function calls do not interfere with the correct operation.
10199 *Lutz Jaenicke, Erik de Castro Lopo*
10201 * Remove root CA certificates of commercial CAs:
10203 The OpenSSL project does not recommend any specific CA and does not
10204 have any policy with respect to including or excluding any CA.
10205 Therefore, it does not make any sense to ship an arbitrary selection
10206 of root CA certificates with the OpenSSL software.
10210 * RSA OAEP patches to fix two separate invalid memory reads.
10211 The first one involves inputs when 'lzero' is greater than
10212 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
10213 before the beginning of from). The second one involves inputs where
10214 the 'db' section contains nothing but zeroes (there is a one-byte
10215 invalid read after the end of 'db').
10217 *Ivan Nestlerode <inestlerode@us.ibm.com>*
10219 * Partial backport from 0.9.9-dev:
10221 Introduce bn_mul_mont (dedicated Montgomery multiplication
10222 procedure) as a candidate for BIGNUM assembler implementation.
10223 While 0.9.9-dev uses assembler for various architectures, only
10224 x86_64 is available by default here in the 0.9.8 branch, and
10225 32-bit x86 is available through a compile-time setting.
10227 To try the 32-bit x86 assembler implementation, use Configure
10228 option "enable-montasm" (which exists only for this backport).
10230 As "enable-montasm" for 32-bit x86 disclaims code stability
10231 anyway, in this constellation we activate additional code
10232 backported from 0.9.9-dev for further performance improvements,
10233 namely BN_from_montgomery_word. (To enable this otherwise,
10234 e.g. x86_64, try `-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD`.)
10236 *Andy Polyakov (backport partially by Bodo Moeller)*
10238 * Add TLS session ticket callback. This allows an application to set
10239 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
10240 values. This is useful for key rollover for example where several key
10241 sets may exist with different names.
10245 * Reverse ENGINE-internal logic for caching default ENGINE handles.
10246 This was broken until now in 0.9.8 releases, such that the only way
10247 a registered ENGINE could be used (assuming it initialises
10248 successfully on the host) was to explicitly set it as the default
10249 for the relevant algorithms. This is in contradiction with 0.9.7
10250 behaviour and the documentation. With this fix, when an ENGINE is
10251 registered into a given algorithm's table of implementations, the
10252 'uptodate' flag is reset so that auto-discovery will be used next
10253 time a new context for that algorithm attempts to select an
10256 *Ian Lister (tweaked by Geoff Thorpe)*
10258 * Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
10259 implementation in the following ways:
10261 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
10264 Lack of BER streaming support means one pass streaming processing is
10265 only supported if data is detached: setting the streaming flag is
10266 ignored for embedded content.
10268 CMS support is disabled by default and must be explicitly enabled
10269 with the enable-cms configuration option.
10273 * Update the GMP engine glue to do direct copies between BIGNUM and
10274 mpz_t when openssl and GMP use the same limb size. Otherwise the
10275 existing "conversion via a text string export" trick is still used.
10277 *Paul Sheer <paulsheer@gmail.com>*
10279 * Zlib compression BIO. This is a filter BIO which compressed and
10280 uncompresses any data passed through it.
10284 * Add AES_wrap_key() and AES_unwrap_key() functions to implement
10285 RFC3394 compatible AES key wrapping.
10289 * Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
10290 sets string data without copying. X509_ALGOR_set0() and
10291 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
10292 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
10293 from an X509_ATTRIBUTE structure optionally checking it occurs only
10294 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
10299 * Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
10300 to get the expected BN_FLG_CONSTTIME behavior.
10302 *Bodo Moeller (Google)*
10306 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
10307 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
10308 - added some more tests to do_tests.pl
10309 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
10310 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
10311 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
10312 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
10313 - various changes to netware.pl to enable gcc-cross builds on Win32
10315 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
10316 - various changes to fix missing prototype warnings
10317 - fixed x86nasm.pl to create correct asm files for NASM COFF output
10318 - added AES, WHIRLPOOL and CPUID assembler code to build files
10319 - added missing AES assembler make rules to mk1mf.pl
10320 - fixed order of includes in `apps/ocsp.c` so that `e_os.h` settings apply
10322 *Guenter Knauf <eflash@gmx.net>*
10324 * Implement certificate status request TLS extension defined in RFC3546.
10325 A client can set the appropriate parameters and receive the encoded
10326 OCSP response via a callback. A server can query the supplied parameters
10327 and set the encoded OCSP response in the callback. Add simplified examples
10328 to s_client and s_server.
10332 ### Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
10334 * Fix various bugs:
10335 + Binary incompatibility of ssl_ctx_st structure
10336 + DTLS interoperation with non-compliant servers
10337 + Don't call get_session_cb() without proposed session
10338 + Fix ia64 assembler code
10340 *Andy Polyakov, Steve Henson*
10342 ### Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
10344 * DTLS Handshake overhaul. There were longstanding issues with
10345 OpenSSL DTLS implementation, which were making it impossible for
10346 RFC 4347 compliant client to communicate with OpenSSL server.
10347 Unfortunately just fixing these incompatibilities would "cut off"
10348 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
10349 server keeps tolerating non RFC compliant syntax. The opposite is
10350 not true, 0.9.8f client can not communicate with earlier server.
10351 This update even addresses CVE-2007-4995.
10355 * Changes to avoid need for function casts in OpenSSL: some compilers
10356 (gcc 4.2 and later) reject their use.
10357 *Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
10360 * Add RFC4507 support to OpenSSL. This includes the corrections in
10361 RFC4507bis. The encrypted ticket format is an encrypted encoded
10362 SSL_SESSION structure, that way new session features are automatically
10365 If a client application caches session in an SSL_SESSION structure
10366 support is transparent because tickets are now stored in the encoded
10369 The SSL_CTX structure automatically generates keys for ticket
10370 protection in servers so again support should be possible
10371 with no application modification.
10373 If a client or server wishes to disable RFC4507 support then the option
10374 SSL_OP_NO_TICKET can be set.
10376 Add a TLS extension debugging callback to allow the contents of any client
10377 or server extensions to be examined.
10379 This work was sponsored by Google.
10383 * Add initial support for TLS extensions, specifically for the server_name
10384 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
10385 have new members for a hostname. The SSL data structure has an
10386 additional member `SSL_CTX *initial_ctx` so that new sessions can be
10387 stored in that context to allow for session resumption, even after the
10388 SSL has been switched to a new SSL_CTX in reaction to a client's
10389 server_name extension.
10391 New functions (subject to change):
10393 SSL_get_servername()
10394 SSL_get_servername_type()
10397 New CTRL codes and macros (subject to change):
10399 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
10400 - SSL_CTX_set_tlsext_servername_callback()
10401 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
10402 - SSL_CTX_set_tlsext_servername_arg()
10403 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
10405 openssl s_client has a new '-servername ...' option.
10407 openssl s_server has new options '-servername_host ...', '-cert2 ...',
10408 '-key2 ...', '-servername_fatal' (subject to change). This allows
10409 testing the HostName extension for a specific single hostname ('-cert'
10410 and '-key' remain fallbacks for handshakes without HostName
10411 negotiation). If the unrecognized_name alert has to be sent, this by
10412 default is a warning; it becomes fatal with the '-servername_fatal'
10415 *Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson*
10417 * Add AES and SSE2 assembly language support to VC++ build.
10421 * Mitigate attack on final subtraction in Montgomery reduction.
10425 * Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
10426 (which previously caused an internal error).
10430 * Squeeze another 10% out of IGE mode when in != out.
10434 * AES IGE mode speedup.
10436 *Dean Gaudet (Google)*
10438 * Add the Korean symmetric 128-bit cipher SEED (see
10439 <http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp>) and
10440 add SEED ciphersuites from RFC 4162:
10442 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
10443 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
10444 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
10445 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
10447 To minimize changes between patchlevels in the OpenSSL 0.9.8
10448 series, SEED remains excluded from compilation unless OpenSSL
10449 is configured with 'enable-seed'.
10451 *KISA, Bodo Moeller*
10453 * Mitigate branch prediction attacks, which can be practical if a
10454 single processor is shared, allowing a spy process to extract
10455 information. For detailed background information, see
10456 <http://eprint.iacr.org/2007/039> (O. Aciicmez, S. Gueron,
10457 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
10458 and Necessary Software Countermeasures"). The core of the change
10459 are new versions BN_div_no_branch() and
10460 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
10461 respectively, which are slower, but avoid the security-relevant
10462 conditional branches. These are automatically called by BN_div()
10463 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
10464 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
10465 remove a conditional branch.
10467 BN_FLG_CONSTTIME is the new name for the previous
10468 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
10469 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
10470 in the exponent causes BN_mod_exp_mont() to use the alternative
10471 implementation in BN_mod_exp_mont_consttime().) The old name
10472 remains as a deprecated alias.
10474 Similarly, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
10475 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
10476 constant-time implementations for more than just exponentiation.
10477 Here too the old name is kept as a deprecated alias.
10479 BN_BLINDING_new() will now use BN_dup() for the modulus so that
10480 the BN_BLINDING structure gets an independent copy of the
10481 modulus. This means that the previous `BIGNUM *m` argument to
10482 BN_BLINDING_new() and to BN_BLINDING_create_param() now
10483 essentially becomes `const BIGNUM *m`, although we can't actually
10484 change this in the header file before 0.9.9. It allows
10485 RSA_setup_blinding() to use BN_with_flags() on the modulus to
10486 enable BN_FLG_CONSTTIME.
10488 *Matthew D Wood (Intel Corp)*
10490 * In the SSL/TLS server implementation, be strict about session ID
10491 context matching (which matters if an application uses a single
10492 external cache for different purposes). Previously,
10493 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
10494 set. This did ensure strict client verification, but meant that,
10495 with applications using a single external cache for quite
10496 different requirements, clients could circumvent ciphersuite
10497 restrictions for a given session ID context by starting a session
10498 in a different context.
10502 * Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
10503 a ciphersuite string such as "DEFAULT:RSA" cannot enable
10504 authentication-only ciphersuites.
10508 * Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
10509 not complete and could lead to a possible single byte overflow
10510 ([CVE-2007-5135]) [Ben Laurie]
10512 ### Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
10514 * Since AES128 and AES256 (and similarly Camellia128 and
10515 Camellia256) share a single mask bit in the logic of
10516 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
10517 kludge to work properly if AES128 is available and AES256 isn't
10518 (or if Camellia128 is available and Camellia256 isn't).
10522 * Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
10523 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
10524 When a point or a seed is encoded in a BIT STRING, we need to
10525 prevent the removal of trailing zero bits to get the proper DER
10526 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
10527 of a NamedBitList, for which trailing 0 bits need to be removed.)
10531 * Have SSL/TLS server implementation tolerate "mismatched" record
10532 protocol version while receiving ClientHello even if the
10533 ClientHello is fragmented. (The server can't insist on the
10534 particular protocol version it has chosen before the ServerHello
10535 message has informed the client about his choice.)
10539 * Add RFC 3779 support.
10541 *Rob Austein for ARIN, Ben Laurie*
10543 * Load error codes if they are not already present instead of using a
10544 static variable. This allows them to be cleanly unloaded and reloaded.
10545 Improve header file function name parsing.
10549 * extend SMTP and IMAP protocol emulation in s_client to use EHLO
10550 or CAPABILITY handshake as required by RFCs.
10552 *Goetz Babin-Ebell*
10554 ### Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
10556 * Introduce limits to prevent malicious keys being able to
10557 cause a denial of service. ([CVE-2006-2940])
10559 *Steve Henson, Bodo Moeller*
10561 * Fix ASN.1 parsing of certain invalid structures that can result
10562 in a denial of service. ([CVE-2006-2937]) [Steve Henson]
10564 * Fix buffer overflow in SSL_get_shared_ciphers() function.
10565 ([CVE-2006-3738]) [Tavis Ormandy and Will Drewry, Google Security Team]
10567 * Fix SSL client code which could crash if connecting to a
10568 malicious SSLv2 server. ([CVE-2006-4343])
10570 *Tavis Ormandy and Will Drewry, Google Security Team*
10572 * Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
10573 match only those. Before that, "AES256-SHA" would be interpreted
10574 as a pattern and match "AES128-SHA" too (since AES128-SHA got
10575 the same strength classification in 0.9.7h) as we currently only
10576 have a single AES bit in the ciphersuite description bitmap.
10577 That change, however, also applied to ciphersuite strings such as
10578 "RC4-MD5" that intentionally matched multiple ciphersuites --
10579 namely, SSL 2.0 ciphersuites in addition to the more common ones
10580 from SSL 3.0/TLS 1.0.
10582 So we change the selection algorithm again: Naming an explicit
10583 ciphersuite selects this one ciphersuite, and any other similar
10584 ciphersuite (same bitmap) from *other* protocol versions.
10585 Thus, "RC4-MD5" again will properly select both the SSL 2.0
10586 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
10588 Since SSL 2.0 does not have any ciphersuites for which the
10589 128/256 bit distinction would be relevant, this works for now.
10590 The proper fix will be to use different bits for AES128 and
10591 AES256, which would have avoided the problems from the beginning;
10592 however, bits are scarce, so we can only do this in a new release
10593 (not just a patchlevel) when we can change the SSL_CIPHER
10594 definition to split the single 'unsigned long mask' bitmap into
10595 multiple values to extend the available space.
10599 ### Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
10601 * Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
10602 ([CVE-2006-4339]) [Ben Laurie and Google Security Team]
10604 * Add AES IGE and biIGE modes.
10608 * Change the Unix randomness entropy gathering to use poll() when
10609 possible instead of select(), since the latter has some
10610 undesirable limitations.
10612 *Darryl Miles via Richard Levitte and Bodo Moeller*
10614 * Disable "ECCdraft" ciphersuites more thoroughly. Now special
10615 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
10616 cannot be implicitly activated as part of, e.g., the "AES" alias.
10617 However, please upgrade to OpenSSL 0.9.9[-dev] for
10618 non-experimental use of the ECC ciphersuites to get TLS extension
10619 support, which is required for curve and point format negotiation
10620 to avoid potential handshake problems.
10624 * Disable rogue ciphersuites:
10626 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
10627 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
10628 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
10630 The latter two were purportedly from
10631 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
10634 Also deactivate the remaining ciphersuites from
10635 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
10636 unofficial, and the ID has long expired.
10640 * Fix RSA blinding Heisenbug (problems sometimes occurred on
10641 dual-core machines) and other potential thread-safety issues.
10645 * Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
10646 versions), which is now available for royalty-free use
10647 (see <http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html>).
10648 Also, add Camellia TLS ciphersuites from RFC 4132.
10650 To minimize changes between patchlevels in the OpenSSL 0.9.8
10651 series, Camellia remains excluded from compilation unless OpenSSL
10652 is configured with 'enable-camellia'.
10656 * Disable the padding bug check when compression is in use. The padding
10657 bug check assumes the first packet is of even length, this is not
10658 necessarily true if compression is enabled and can result in false
10659 positives causing handshake failure. The actual bug test is ancient
10660 code so it is hoped that implementations will either have fixed it by
10661 now or any which still have the bug do not support compression.
10665 ### Changes between 0.9.8a and 0.9.8b [04 May 2006]
10667 * When applying a cipher rule check to see if string match is an explicit
10668 cipher suite and only match that one cipher suite if it is.
10672 * Link in manifests for VC++ if needed.
10674 *Austin Ziegler <halostatue@gmail.com>*
10676 * Update support for ECC-based TLS ciphersuites according to
10677 draft-ietf-tls-ecc-12.txt with proposed changes (but without
10678 TLS extensions, which are supported starting with the 0.9.9
10679 branch, not in the OpenSSL 0.9.8 branch).
10683 * New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
10684 opaque EVP_CIPHER_CTX handling.
10688 * Fixes and enhancements to zlib compression code. We now only use
10689 "zlib1.dll" and use the default `__cdecl` calling convention on Win32
10690 to conform with the standards mentioned here:
10691 <http://www.zlib.net/DLL_FAQ.txt>
10692 Static zlib linking now works on Windows and the new --with-zlib-include
10693 --with-zlib-lib options to Configure can be used to supply the location
10694 of the headers and library. Gracefully handle case where zlib library
10699 * Several fixes and enhancements to the OID generation code. The old code
10700 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
10701 handle numbers larger than ULONG_MAX, truncated printing and had a
10702 non standard OBJ_obj2txt() behaviour.
10706 * Add support for building of engines under engine/ as shared libraries
10707 under VC++ build system.
10711 * Corrected the numerous bugs in the Win32 path splitter in DSO.
10712 Hopefully, we will not see any false combination of paths any more.
10716 ### Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
10718 * Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
10719 (part of SSL_OP_ALL). This option used to disable the
10720 countermeasure against man-in-the-middle protocol-version
10721 rollback in the SSL 2.0 server implementation, which is a bad
10722 idea. ([CVE-2005-2969])
10724 *Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
10725 for Information Security, National Institute of Advanced Industrial
10726 Science and Technology [AIST], Japan)*
10728 * Add two function to clear and return the verify parameter flags.
10732 * Keep cipherlists sorted in the source instead of sorting them at
10733 runtime, thus removing the need for a lock.
10737 * Avoid some small subgroup attacks in Diffie-Hellman.
10739 *Nick Mathewson and Ben Laurie*
10741 * Add functions for well-known primes.
10745 * Extended Windows CE support.
10747 *Satoshi Nakamura and Andy Polyakov*
10749 * Initialize SSL_METHOD structures at compile time instead of during
10750 runtime, thus removing the need for a lock.
10754 * Make PKCS7_decrypt() work even if no certificate is supplied by
10755 attempting to decrypt each encrypted key in turn. Add support to
10760 ### Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
10762 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
10765 * Add libcrypto.pc and libssl.pc for those who feel they need them.
10769 * Change CA.sh and CA.pl so they don't bundle the CSR and the private
10770 key into the same file any more.
10774 * Add initial support for Win64, both IA64 and AMD64/x64 flavors.
10778 * Add -utf8 command line and config file option to 'ca'.
10780 *Stefan <stf@udoma.org*
10782 * Removed the macro des_crypt(), as it seems to conflict with some
10783 libraries. Use DES_crypt().
10787 * Correct naming of the 'chil' and '4758cca' ENGINEs. This
10788 involves renaming the source and generated shared-libs for
10789 both. The engines will accept the corrected or legacy ids
10790 ('ncipher' and '4758_cca' respectively) when binding. NB,
10791 this only applies when building 'shared'.
10793 *Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe*
10795 * Add attribute functions to EVP_PKEY structure. Modify
10796 PKCS12_create() to recognize a CSP name attribute and
10797 use it. Make -CSP option work again in pkcs12 utility.
10801 * Add new functionality to the bn blinding code:
10802 - automatic re-creation of the BN_BLINDING parameters after
10803 a fixed number of uses (currently 32)
10804 - add new function for parameter creation
10805 - introduce flags to control the update behaviour of the
10806 BN_BLINDING parameters
10807 - hide BN_BLINDING structure
10808 Add a second BN_BLINDING slot to the RSA structure to improve
10809 performance when a single RSA object is shared among several
10814 * Add support for DTLS.
10816 *Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie*
10818 * Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
10819 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
10823 * Remove buggy and incomplete DH cert support from
10824 ssl/ssl_rsa.c and ssl/s3_both.c
10828 * Use SHA-1 instead of MD5 as the default digest algorithm for
10829 the `apps/openssl` commands.
10833 * Compile clean with "-Wall -Wmissing-prototypes
10834 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
10835 DEBUG_SAFESTACK must also be set.
10839 * Change ./Configure so that certain algorithms can be disabled by default.
10840 The new counterpiece to "no-xxx" is "enable-xxx".
10842 The patented RC5 and MDC2 algorithms will now be disabled unless
10843 "enable-rc5" and "enable-mdc2", respectively, are specified.
10845 (IDEA remains enabled despite being patented. This is because IDEA
10846 is frequently required for interoperability, and there is no license
10847 fee for non-commercial use. As before, "no-idea" can be used to
10848 avoid this algorithm.)
10852 * Add processing of proxy certificates (see RFC 3820). This work was
10853 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
10854 EGEE (Enabling Grids for E-science in Europe).
10858 * RC4 performance overhaul on modern architectures/implementations, such
10859 as Intel P4, IA-64 and AMD64.
10863 * New utility extract-section.pl. This can be used specify an alternative
10864 section number in a pod file instead of having to treat each file as
10865 a separate case in Makefile. This can be done by adding two lines to the
10868 =for comment openssl_section:XXX
10870 The blank line is mandatory.
10874 * New arguments -certform, -keyform and -pass for s_client and s_server
10875 to allow alternative format key and certificate files and passphrase
10880 * New structure X509_VERIFY_PARAM which combines current verify parameters,
10881 update associated structures and add various utility functions.
10883 Add new policy related verify parameters, include policy checking in
10884 standard verify code. Enhance 'smime' application with extra parameters
10885 to support policy checking and print out.
10889 * Add a new engine to support VIA PadLock ACE extensions in the VIA C3
10890 Nehemiah processors. These extensions support AES encryption in hardware
10891 as well as RNG (though RNG support is currently disabled).
10893 *Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov*
10895 * Deprecate `BN_[get|set]_params()` functions (they were ignored internally).
10899 * New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
10901 *Andy Polyakov and a number of other people*
10903 * Improved PowerPC platform support. Most notably BIGNUM assembler
10904 implementation contributed by IBM.
10906 *Suresh Chari, Peter Waltenberg, Andy Polyakov*
10908 * The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
10909 exponent rather than 'unsigned long'. There is a corresponding change to
10910 the new 'rsa_keygen' element of the RSA_METHOD structure.
10912 *Jelte Jansen, Geoff Thorpe*
10914 * Functionality for creating the initial serial number file is now
10915 moved from CA.pl to the 'ca' utility with a new option -create_serial.
10917 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
10918 number file to 1, which is bound to cause problems. To avoid
10919 the problems while respecting compatibility between different 0.9.7
10920 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
10921 CA.pl for serial number initialization. With the new release 0.9.8,
10922 we can fix the problem directly in the 'ca' utility.)
10926 * Reduced header interdependencies by declaring more opaque objects in
10927 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
10928 give fewer recursive includes, which could break lazy source code - so
10929 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
10930 developers should define this symbol when building and using openssl to
10931 ensure they track the recommended behaviour, interfaces, [etc], but
10932 backwards-compatible behaviour prevails when this isn't defined.
10936 * New function X509_POLICY_NODE_print() which prints out policy nodes.
10940 * Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
10941 This will generate a random key of the appropriate length based on the
10942 cipher context. The EVP_CIPHER can provide its own random key generation
10943 routine to support keys of a specific form. This is used in the des and
10944 3des routines to generate a key of the correct parity. Update S/MIME
10945 code to use new functions and hence generate correct parity DES keys.
10946 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
10947 valid (weak or incorrect parity).
10951 * Add a local set of CRLs that can be used by X509_verify_cert() as well
10952 as looking them up. This is useful when the verified structure may contain
10953 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
10954 present unless the new PKCS7_NO_CRL flag is asserted.
10958 * Extend ASN1 oid configuration module. It now additionally accepts the
10961 shortName = some long name, 1.2.3.4
10965 * Reimplemented the BN_CTX implementation. There is now no more static
10966 limitation on the number of variables it can handle nor the depth of the
10967 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
10968 information can now expand as required, and rather than having a single
10969 static array of bignums, BN_CTX now uses a linked-list of such arrays
10970 allowing it to expand on demand whilst maintaining the usefulness of
10971 BN_CTX's "bundling".
10975 * Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
10976 to allow all RSA operations to function using a single BN_CTX.
10980 * Preliminary support for certificate policy evaluation and checking. This
10981 is initially intended to pass the tests outlined in "Conformance Testing
10982 of Relying Party Client Certificate Path Processing Logic" v1.07.
10986 * bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
10987 remained unused and not that useful. A variety of other little bignum
10988 tweaks and fixes have also been made continuing on from the audit (see
10993 * Constify all or almost all d2i, c2i, s2i and r2i functions, along with
10994 associated ASN1, EVP and SSL functions and old ASN1 macros.
10998 * BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
10999 and this should never fail. So the return value from the use of
11000 BN_set_word() (which can fail due to needless expansion) is now deprecated;
11001 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
11005 * BN_CTX_get() should return zero-valued bignums, providing the same
11006 initialised value as BN_new().
11008 *Geoff Thorpe, suggested by Ulf Möller*
11010 * Support for inhibitAnyPolicy certificate extension.
11014 * An audit of the BIGNUM code is underway, for which debugging code is
11015 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
11016 is considered valid when processing BIGNUMs, and causes execution to
11017 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
11018 further steps are taken to deliberately pollute unused data in BIGNUM
11019 structures to try and expose faulty code further on. For now, openssl will
11020 (in its default mode of operation) continue to tolerate the inconsistent
11021 forms that it has tolerated in the past, but authors and packagers should
11022 consider trying openssl and their own applications when compiled with
11023 these debugging symbols defined. It will help highlight potential bugs in
11024 their own code, and will improve the test coverage for OpenSSL itself. At
11025 some point, these tighter rules will become openssl's default to improve
11026 maintainability, though the assert()s and other overheads will remain only
11027 in debugging configurations. See bn.h for more details.
11029 *Geoff Thorpe, Nils Larsch, Ulf Möller*
11031 * BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
11032 that can only be obtained through BN_CTX_new() (which implicitly
11033 initialises it). The presence of this function only made it possible
11034 to overwrite an existing structure (and cause memory leaks).
11038 * Because of the callback-based approach for implementing LHASH as a
11039 template type, lh_insert() adds opaque objects to hash-tables and
11040 lh_doall() or lh_doall_arg() are typically used with a destructor callback
11041 to clean up those corresponding objects before destroying the hash table
11042 (and losing the object pointers). So some over-zealous constifications in
11043 LHASH have been relaxed so that lh_insert() does not take (nor store) the
11044 objects as "const" and the `lh_doall[_arg]` callback wrappers are not
11045 prototyped to have "const" restrictions on the object pointers they are
11046 given (and so aren't required to cast them away any more).
11050 * The tmdiff.h API was so ugly and minimal that our own timing utility
11051 (speed) prefers to use its own implementation. The two implementations
11052 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
11053 its object type properly exposed (MS_TM) instead of casting to/from
11054 `char *`. This may still change yet if someone realises MS_TM and
11056 aren't necessarily the greatest nomenclatures - but this is what was used
11057 internally to the implementation so I've used that for now.
11061 * Ensure that deprecated functions do not get compiled when
11062 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
11063 the self-tests were still using deprecated key-generation functions so
11064 these have been updated also.
11068 * Reorganise PKCS#7 code to separate the digest location functionality
11069 into PKCS7_find_digest(), digest addition into PKCS7_bio_add_digest().
11070 New function PKCS7_set_digest() to set the digest type for PKCS#7
11071 digestedData type. Add additional code to correctly generate the
11072 digestedData type and add support for this type in PKCS7 initialization
11077 * New function PKCS7_set0_type_other() this initializes a PKCS7
11078 structure of type "other".
11082 * Fix prime generation loop in crypto/bn/bn_prime.pl by making
11083 sure the loop does correctly stop and breaking ("division by zero")
11084 modulus operations are not performed. The (pre-generated) prime
11085 table crypto/bn/bn_prime.h was already correct, but it could not be
11086 re-generated on some platforms because of the "division by zero"
11087 situation in the script.
11089 *Ralf S. Engelschall*
11091 * Update support for ECC-based TLS ciphersuites according to
11092 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
11093 SHA-1 now is only used for "small" curves (where the
11094 representation of a field element takes up to 24 bytes); for
11095 larger curves, the field element resulting from ECDH is directly
11096 used as premaster secret.
11098 *Douglas Stebila (Sun Microsystems Laboratories)*
11100 * Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
11101 curve secp160r1 to the tests.
11103 *Douglas Stebila (Sun Microsystems Laboratories)*
11105 * Add the possibility to load symbols globally with DSO.
11107 *Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte*
11109 * Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
11110 control of the error stack.
11114 * Add support for STORE in ENGINE.
11118 * Add the STORE type. The intention is to provide a common interface
11119 to certificate and key stores, be they simple file-based stores, or
11120 HSM-type store, or LDAP stores, or...
11121 NOTE: The code is currently UNTESTED and isn't really used anywhere.
11125 * Add a generic structure called OPENSSL_ITEM. This can be used to
11126 pass a list of arguments to any function as well as provide a way
11127 for a function to pass data back to the caller.
11131 * Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
11132 works like BUF_strdup() but can be used to duplicate a portion of
11133 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
11138 * Add the function sk_find_ex() which works like sk_find(), but will
11139 return an index to an element even if an exact match couldn't be
11140 found. The index is guaranteed to point at the element where the
11141 searched-for key would be inserted to preserve sorting order.
11145 * Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
11146 takes an extra flags argument for optional functionality. Currently,
11147 the following flags are defined:
11149 OBJ_BSEARCH_VALUE_ON_NOMATCH
11150 This one gets OBJ_bsearch_ex() to return a pointer to the first
11151 element where the comparing function returns a negative or zero
11154 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
11155 This one gets OBJ_bsearch_ex() to return a pointer to the first
11156 element where the comparing function returns zero. This is useful
11157 if there are more than one element where the comparing function
11162 * Make it possible to create self-signed certificates with 'openssl ca'
11163 in such a way that the self-signed certificate becomes part of the
11164 CA database and uses the same mechanisms for serial number generation
11165 as all other certificate signing. The new flag '-selfsign' enables
11166 this functionality. Adapt CA.sh and CA.pl.in.
11170 * Add functionality to check the public key of a certificate request
11171 against a given private. This is useful to check that a certificate
11172 request can be signed by that key (self-signing).
11176 * Make it possible to have multiple active certificates with the same
11177 subject in the CA index file. This is done only if the keyword
11178 'unique_subject' is set to 'no' in the main CA section (default
11179 if 'CA_default') of the configuration file. The value is saved
11180 with the database itself in a separate index attribute file,
11181 named like the index file with '.attr' appended to the name.
11185 * Generate multi-valued AVAs using '+' notation in config files for
11190 * Support for nameConstraints certificate extension.
11194 * Support for policyConstraints certificate extension.
11198 * Support for policyMappings certificate extension.
11202 * Make sure the default DSA_METHOD implementation only uses its
11203 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
11204 and change its own handlers to be NULL so as to remove unnecessary
11205 indirection. This lets alternative implementations fallback to the
11206 default implementation more easily.
11210 * Support for directoryName in GeneralName related extensions
11215 * Make it possible to link applications using Makefile.shared.
11216 Make that possible even when linking against static libraries!
11220 * Support for single pass processing for S/MIME signing. This now
11221 means that S/MIME signing can be done from a pipe, in addition
11222 cleartext signing (multipart/signed type) is effectively streaming
11223 and the signed data does not need to be all held in memory.
11225 This is done with a new flag PKCS7_STREAM. When this flag is set
11226 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
11227 is done after the data is output (and digests calculated) in
11228 SMIME_write_PKCS7().
11232 * Add full support for -rpath/-R, both in shared libraries and
11233 applications, at least on the platforms where it's known how
11238 * In crypto/ec/ec_mult.c, implement fast point multiplication with
11239 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
11240 will now compute a table of multiples of the generator that
11241 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
11242 faster (notably in the case of a single point multiplication,
11243 scalar * generator).
11245 *Nils Larsch, Bodo Moeller*
11247 * IPv6 support for certificate extensions. The various extensions
11248 which use the IP:a.b.c.d can now take IPv6 addresses using the
11249 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
11254 * Added an ENGINE that implements RSA by performing private key
11255 exponentiations with the GMP library. The conversions to and from
11256 GMP's mpz_t format aren't optimised nor are any montgomery forms
11257 cached, and on x86 it appears OpenSSL's own performance has caught up.
11258 However there are likely to be other architectures where GMP could
11259 provide a boost. This ENGINE is not built in by default, but it can be
11260 specified at Configure time and should be accompanied by the necessary
11261 linker additions, eg;
11262 ./config -DOPENSSL_USE_GMP -lgmp
11266 * "openssl engine" will not display ENGINE/DSO load failure errors when
11267 testing availability of engines with "-t" - the old behaviour is
11268 produced by increasing the feature's verbosity with "-tt".
11272 * ECDSA routines: under certain error conditions uninitialized BN objects
11273 could be freed. Solution: make sure initialization is performed early
11274 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
11279 * Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
11280 and DH_METHOD (eg. by ENGINE implementations) to override the normal
11281 software implementations. For DSA and DH, parameter generation can
11282 also be overridden by providing the appropriate method callbacks.
11286 * Change the "progress" mechanism used in key-generation and
11287 primality testing to functions that take a new BN_GENCB pointer in
11288 place of callback/argument pairs. The new API functions have `_ex`
11289 postfixes and the older functions are reimplemented as wrappers for
11290 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
11291 declarations of the old functions to help (graceful) attempts to
11292 migrate to the new functions. Also, the new key-generation API
11293 functions operate on a caller-supplied key-structure and return
11294 success/failure rather than returning a key or NULL - this is to
11295 help make "keygen" another member function of RSA_METHOD etc.
11297 Example for using the new callback interface:
11299 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
11300 void *my_arg = ...;
11303 BN_GENCB_set(&my_cb, my_callback, my_arg);
11305 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
11306 /* For the meaning of a, b in calls to my_callback(), see the
11307 * documentation of the function that calls the callback.
11308 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
11309 * my_callback should return 1 if it wants BN_is_prime_ex()
11310 * to continue, or 0 to stop.
11315 * Change the ZLIB compression method to be stateful, and make it
11316 available to TLS with the number defined in
11317 draft-ietf-tls-compression-04.txt.
11321 * Add the ASN.1 structures and functions for CertificatePair, which
11322 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
11324 CertificatePair ::= SEQUENCE {
11325 forward [0] Certificate OPTIONAL,
11326 reverse [1] Certificate OPTIONAL,
11327 -- at least one of the pair shall be present -- }
11329 Also implement the PEM functions to read and write certificate
11330 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
11332 This needed to be defined, mostly for the sake of the LDAP
11333 attribute crossCertificatePair, but may prove useful elsewhere as
11338 * Make it possible to inhibit symlinking of shared libraries in
11339 Makefile.shared, for Cygwin's sake.
11343 * Extend the BIGNUM API by creating a function
11344 void BN_set_negative(BIGNUM *a, int neg);
11345 and a macro that behave like
11346 int BN_is_negative(const BIGNUM *a);
11348 to avoid the need to access 'a->neg' directly in applications.
11352 * Implement fast modular reduction for pseudo-Mersenne primes
11353 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
11354 EC_GROUP_new_curve_GFp() will now automatically use this
11357 *Nils Larsch <nla@trustcenter.de>*
11359 * Add new lock type (CRYPTO_LOCK_BN).
11363 * Change the ENGINE framework to automatically load engines
11364 dynamically from specific directories unless they could be
11365 found to already be built in or loaded. Move all the
11366 current engines except for the cryptodev one to a new
11367 directory engines/.
11368 The engines in engines/ are built as shared libraries if
11369 the "shared" options was given to ./Configure or ./config.
11370 Otherwise, they are inserted in libcrypto.a.
11371 /usr/local/ssl/engines is the default directory for dynamic
11372 engines, but that can be overridden at configure time through
11373 the usual use of --prefix and/or --openssldir, and at run
11374 time with the environment variable OPENSSL_ENGINES.
11376 *Geoff Thorpe and Richard Levitte*
11378 * Add Makefile.shared, a helper makefile to build shared
11379 libraries. Adapt Makefile.org.
11383 * Add version info to Win32 DLLs.
11385 *Peter 'Luna' Runestig" <peter@runestig.com>*
11387 * Add new 'medium level' PKCS#12 API. Certificates and keys
11388 can be added using this API to created arbitrary PKCS#12
11389 files while avoiding the low-level API.
11391 New options to PKCS12_create(), key or cert can be NULL and
11392 will then be omitted from the output file. The encryption
11393 algorithm NIDs can be set to -1 for no encryption, the mac
11394 iteration count can be set to 0 to omit the mac.
11396 Enhance pkcs12 utility by making the -nokeys and -nocerts
11397 options work when creating a PKCS#12 file. New option -nomac
11398 to omit the mac, NONE can be set for an encryption algorithm.
11399 New code is modified to use the enhanced PKCS12_create()
11400 instead of the low-level API.
11404 * Extend ASN1 encoder to support indefinite length constructed
11405 encoding. This can output sequences tags and octet strings in
11406 this form. Modify pk7_asn1.c to support indefinite length
11407 encoding. This is experimental and needs additional code to
11408 be useful, such as an ASN1 bio and some enhanced streaming
11411 Extend template encode functionality so that tagging is passed
11412 down to the template encoder.
11416 * Let 'openssl req' fail if an argument to '-newkey' is not
11417 recognized instead of using RSA as a default.
11421 * Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
11422 As these are not official, they are not included in "ALL";
11423 the "ECCdraft" ciphersuite group alias can be used to select them.
11425 *Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)*
11427 * Add ECDH engine support.
11429 *Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)*
11431 * Add ECDH in new directory crypto/ecdh/.
11433 *Douglas Stebila (Sun Microsystems Laboratories)*
11435 * Let BN_rand_range() abort with an error after 100 iterations
11436 without success (which indicates a broken PRNG).
11440 * Change BN_mod_sqrt() so that it verifies that the input value
11441 is really the square of the return value. (Previously,
11442 BN_mod_sqrt would show GIGO behaviour.)
11446 * Add named elliptic curves over binary fields from X9.62, SECG,
11447 and WAP/WTLS; add OIDs that were still missing.
11449 *Sheueling Chang Shantz and Douglas Stebila (Sun Microsystems Laboratories)*
11451 * Extend the EC library for elliptic curves over binary fields
11452 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
11455 EC_GF2m_simple_method
11459 EC_GROUP_new_curve_GF2m
11460 EC_GROUP_set_curve_GF2m
11461 EC_GROUP_get_curve_GF2m
11462 EC_POINT_set_affine_coordinates_GF2m
11463 EC_POINT_get_affine_coordinates_GF2m
11464 EC_POINT_set_compressed_coordinates_GF2m
11466 Point compression for binary fields is disabled by default for
11467 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
11470 As binary polynomials are represented as BIGNUMs, various members
11471 of the EC_GROUP and EC_POINT data structures can be shared
11472 between the implementations for prime fields and binary fields;
11473 the above `..._GF2m functions` (except for EX_GROUP_new_curve_GF2m)
11474 are essentially identical to their `..._GFp` counterparts.
11475 (For simplicity, the `..._GFp` prefix has been dropped from
11476 various internal method names.)
11478 An internal 'field_div' method (similar to 'field_mul' and
11479 'field_sqr') has been added; this is used only for binary fields.
11481 *Sheueling Chang Shantz and Douglas Stebila (Sun Microsystems Laboratories)*
11483 * Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
11484 through methods ('mul', 'precompute_mult').
11486 The generic implementations (now internally called 'ec_wNAF_mul'
11487 and 'ec_wNAF_precomputed_mult') remain the default if these
11488 methods are undefined.
11490 *Sheueling Chang Shantz and Douglas Stebila (Sun Microsystems Laboratories)*
11492 * New function EC_GROUP_get_degree, which is defined through
11493 EC_METHOD. For curves over prime fields, this returns the bit
11494 length of the modulus.
11496 *Sheueling Chang Shantz and Douglas Stebila (Sun Microsystems Laboratories)*
11498 * New functions EC_GROUP_dup, EC_POINT_dup.
11499 (These simply call ..._new and ..._copy).
11501 *Sheueling Chang Shantz and Douglas Stebila (Sun Microsystems Laboratories)*
11503 * Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
11504 Polynomials are represented as BIGNUMs (where the sign bit is not
11505 used) in the following functions [macros]:
11508 BN_GF2m_sub [= BN_GF2m_add]
11509 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
11510 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
11511 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
11513 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
11514 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
11515 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
11516 BN_GF2m_cmp [= BN_ucmp]
11518 (Note that only the 'mod' functions are actually for fields GF(2^m).
11519 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
11521 For some functions, an the irreducible polynomial defining a
11522 field can be given as an 'unsigned int[]' with strictly
11523 decreasing elements giving the indices of those bits that are set;
11524 i.e., p[] represents the polynomial
11525 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
11527 p[0] > p[1] > ... > p[k] = 0.
11528 This applies to the following functions:
11531 BN_GF2m_mod_mul_arr
11532 BN_GF2m_mod_sqr_arr
11533 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
11534 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
11535 BN_GF2m_mod_exp_arr
11536 BN_GF2m_mod_sqrt_arr
11537 BN_GF2m_mod_solve_quad_arr
11541 Conversion can be performed by the following functions:
11546 bntest.c has additional tests for binary polynomial arithmetic.
11548 Two implementations for BN_GF2m_mod_div() are available.
11549 The default algorithm simply uses BN_GF2m_mod_inv() and
11550 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
11551 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
11552 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
11554 *Sheueling Chang Shantz and Douglas Stebila (Sun Microsystems Laboratories)*
11556 * Add new error code 'ERR_R_DISABLED' that can be used when some
11557 functionality is disabled at compile-time.
11559 *Douglas Stebila <douglas.stebila@sun.com>*
11561 * Change default behaviour of 'openssl asn1parse' so that more
11562 information is visible when viewing, e.g., a certificate:
11564 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
11565 mode the content of non-printable OCTET STRINGs is output in a
11566 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
11567 avoid the appearance of a printable string.
11569 *Nils Larsch <nla@trustcenter.de>*
11571 * Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
11573 EC_GROUP_set_asn1_flag()
11574 EC_GROUP_get_asn1_flag()
11575 EC_GROUP_set_point_conversion_form()
11576 EC_GROUP_get_point_conversion_form()
11577 These control ASN1 encoding details:
11578 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
11579 has been set to OPENSSL_EC_NAMED_CURVE.
11580 - Points are encoded in uncompressed form by default; options for
11581 asn1_for are as for point2oct, namely
11582 POINT_CONVERSION_COMPRESSED
11583 POINT_CONVERSION_UNCOMPRESSED
11584 POINT_CONVERSION_HYBRID
11586 Also add 'seed' and 'seed_len' members to EC_GROUP with access
11588 EC_GROUP_set_seed()
11589 EC_GROUP_get0_seed()
11590 EC_GROUP_get_seed_len()
11591 This is used only for ASN1 purposes (so far).
11593 *Nils Larsch <nla@trustcenter.de>*
11595 * Add 'field_type' member to EC_METHOD, which holds the NID
11596 of the appropriate field type OID. The new function
11597 EC_METHOD_get_field_type() returns this value.
11599 *Nils Larsch <nla@trustcenter.de>*
11602 EC_POINT_point2bn()
11603 EC_POINT_bn2point()
11604 EC_POINT_point2hex()
11605 EC_POINT_hex2point()
11606 providing useful interfaces to EC_POINT_point2oct() and
11607 EC_POINT_oct2point().
11609 *Nils Larsch <nla@trustcenter.de>*
11611 * Change internals of the EC library so that the functions
11612 EC_GROUP_set_generator()
11613 EC_GROUP_get_generator()
11614 EC_GROUP_get_order()
11615 EC_GROUP_get_cofactor()
11616 are implemented directly in crypto/ec/ec_lib.c and not dispatched
11617 to methods, which would lead to unnecessary code duplication when
11618 adding different types of curves.
11620 *Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller*
11622 * Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
11623 arithmetic, and such that modified wNAFs are generated
11624 (which avoid length expansion in many cases).
11628 * Add a function EC_GROUP_check_discriminant() (defined via
11629 EC_METHOD) that verifies that the curve discriminant is non-zero.
11631 Add a function EC_GROUP_check() that makes some sanity tests
11632 on a EC_GROUP, its generator and order. This includes
11633 EC_GROUP_check_discriminant().
11635 *Nils Larsch <nla@trustcenter.de>*
11637 * Add ECDSA in new directory crypto/ecdsa/.
11639 Add applications 'openssl ecparam' and 'openssl ecdsa'
11640 (these are based on 'openssl dsaparam' and 'openssl dsa').
11642 ECDSA support is also included in various other files across the
11643 library. Most notably,
11644 - 'openssl req' now has a '-newkey ecdsa:file' option;
11645 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
11646 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
11647 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
11648 them suitable for ECDSA where domain parameters must be
11649 extracted before the specific public key;
11650 - ECDSA engine support has been added.
11652 *Nils Larsch <nla@trustcenter.de>*
11654 * Include some named elliptic curves, and add OIDs from X9.62,
11655 SECG, and WAP/WTLS. Each curve can be obtained from the new
11657 EC_GROUP_new_by_curve_name(),
11658 and the list of available named curves can be obtained with
11659 EC_get_builtin_curves().
11660 Also add a 'curve_name' member to EC_GROUP objects, which can be
11662 EC_GROUP_set_curve_name()
11663 EC_GROUP_get_curve_name()
11665 *Nils Larsch <larsch@trustcenter.de, Bodo Moeller*
11667 * Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
11668 was actually never needed) and in BN_mul(). The removal in BN_mul()
11669 required a small change in bn_mul_part_recursive() and the addition
11670 of the functions bn_cmp_part_words(), bn_sub_part_words() and
11671 bn_add_part_words(), which do the same thing as bn_cmp_words(),
11672 bn_sub_words() and bn_add_words() except they take arrays with
11677 ### Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
11679 * Cleanse PEM buffers before freeing them since they may contain
11682 *Benjamin Bennett <ben@psc.edu>*
11684 * Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
11685 a ciphersuite string such as "DEFAULT:RSA" cannot enable
11686 authentication-only ciphersuites.
11690 * Since AES128 and AES256 share a single mask bit in the logic of
11691 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
11692 kludge to work properly if AES128 is available and AES256 isn't.
11696 * Expand security boundary to match 1.1.1 module.
11700 * Remove redundant features: hash file source, editing of test vectors
11701 modify fipsld to use external fips_premain.c signature.
11705 * New perl script mkfipsscr.pl to create shell scripts or batch files to
11706 run algorithm test programs.
11710 * Make algorithm test programs more tolerant of whitespace.
11714 * Have SSL/TLS server implementation tolerate "mismatched" record
11715 protocol version while receiving ClientHello even if the
11716 ClientHello is fragmented. (The server can't insist on the
11717 particular protocol version it has chosen before the ServerHello
11718 message has informed the client about his choice.)
11722 * Load error codes if they are not already present instead of using a
11723 static variable. This allows them to be cleanly unloaded and reloaded.
11727 ### Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
11729 * Introduce limits to prevent malicious keys being able to
11730 cause a denial of service. ([CVE-2006-2940])
11732 *Steve Henson, Bodo Moeller*
11734 * Fix ASN.1 parsing of certain invalid structures that can result
11735 in a denial of service. ([CVE-2006-2937]) [Steve Henson]
11737 * Fix buffer overflow in SSL_get_shared_ciphers() function.
11738 ([CVE-2006-3738]) [Tavis Ormandy and Will Drewry, Google Security Team]
11740 * Fix SSL client code which could crash if connecting to a
11741 malicious SSLv2 server. ([CVE-2006-4343])
11743 *Tavis Ormandy and Will Drewry, Google Security Team*
11745 * Change ciphersuite string processing so that an explicit
11746 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
11747 will no longer include "AES128-SHA"), and any other similar
11748 ciphersuite (same bitmap) from *other* protocol versions (so that
11749 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
11750 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
11751 changes from 0.9.8b and 0.9.8d.
11755 ### Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
11757 * Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
11758 ([CVE-2006-4339]) [Ben Laurie and Google Security Team]
11760 * Change the Unix randomness entropy gathering to use poll() when
11761 possible instead of select(), since the latter has some
11762 undesirable limitations.
11764 *Darryl Miles via Richard Levitte and Bodo Moeller*
11766 * Disable rogue ciphersuites:
11768 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
11769 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
11770 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
11772 The latter two were purportedly from
11773 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
11776 Also deactivate the remaining ciphersuites from
11777 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
11778 unofficial, and the ID has long expired.
11782 * Fix RSA blinding Heisenbug (problems sometimes occurred on
11783 dual-core machines) and other potential thread-safety issues.
11787 ### Changes between 0.9.7i and 0.9.7j [04 May 2006]
11789 * Adapt fipsld and the build system to link against the validated FIPS
11790 module in FIPS mode.
11794 * Fixes for VC++ 2005 build under Windows.
11798 * Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
11799 from a Windows bash shell such as MSYS. It is autodetected from the
11800 "config" script when run from a VC++ environment. Modify standard VC++
11801 build to use fipscanister.o from the GNU make build.
11805 ### Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
11807 * Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
11808 The value now differs depending on if you build for FIPS or not.
11809 BEWARE! A program linked with a shared FIPSed libcrypto can't be
11810 safely run with a non-FIPSed libcrypto, as it may crash because of
11811 the difference induced by this change.
11815 ### Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
11817 * Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
11818 (part of SSL_OP_ALL). This option used to disable the
11819 countermeasure against man-in-the-middle protocol-version
11820 rollback in the SSL 2.0 server implementation, which is a bad
11821 idea. ([CVE-2005-2969])
11823 *Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
11824 for Information Security, National Institute of Advanced Industrial
11825 Science and Technology [AIST, Japan)]*
11827 * Minimal support for X9.31 signatures and PSS padding modes. This is
11828 mainly for FIPS compliance and not fully integrated at this stage.
11832 * For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
11833 the exponentiation using a fixed-length exponent. (Otherwise,
11834 the information leaked through timing could expose the secret key
11835 after many signatures; cf. Bleichenbacher's attack on DSA with
11840 * Make a new fixed-window mod_exp implementation the default for
11841 RSA, DSA, and DH private-key operations so that the sequence of
11842 squares and multiplies and the memory access pattern are
11843 independent of the particular secret key. This will mitigate
11844 cache-timing and potential related attacks.
11846 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
11847 and this is automatically used by BN_mod_exp_mont() if the new flag
11848 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
11849 will use this BN flag for private exponents unless the flag
11850 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
11851 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
11853 *Matthew D Wood (Intel Corp), with some changes by Bodo Moeller*
11855 * Change the client implementation for SSLv23_method() and
11856 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
11857 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
11858 (Previously, the SSL 2.0 backwards compatible Client Hello
11859 message format would be used even with SSL_OP_NO_SSLv2.)
11863 * Add support for smime-type MIME parameter in S/MIME messages which some
11868 * New function BN_MONT_CTX_set_locked() to set montgomery parameters in
11869 a threadsafe manner. Modify rsa code to use new function and add calls
11870 to dsa and dh code (which had race conditions before).
11874 * Include the fixed error library code in the C error file definitions
11875 instead of fixing them up at runtime. This keeps the error code
11876 structures constant.
11880 ### Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
11882 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
11885 * Fixes for newer kerberos headers. NB: the casts are needed because
11886 the 'length' field is signed on one version and unsigned on another
11887 with no (?) obvious way to tell the difference, without these VC++
11888 complains. Also the "definition" of FAR (blank) is no longer included
11889 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
11890 some needed definitions.
11894 * Undo Cygwin change.
11898 * Added support for proxy certificates according to RFC 3820.
11899 Because they may be a security thread to unaware applications,
11900 they must be explicitly allowed in run-time. See
11901 docs/HOWTO/proxy_certificates.txt for further information.
11905 ### Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
11907 * Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
11908 server and client random values. Previously
11909 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
11910 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
11912 This change has negligible security impact because:
11914 1. Server and client random values still have 24 bytes of pseudo random
11917 2. Server and client random values are sent in the clear in the initial
11920 3. The master secret is derived using the premaster secret (48 bytes in
11921 size for static RSA ciphersuites) as well as client server and random
11924 The OpenSSL team would like to thank the UK NISCC for bringing this issue
11927 *Stephen Henson, reported by UK NISCC*
11929 * Use Windows randomness collection on Cygwin.
11933 * Fix hang in EGD/PRNGD query when communication socket is closed
11934 prematurely by EGD/PRNGD.
11936 *Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014*
11938 * Prompt for pass phrases when appropriate for PKCS12 input format.
11942 * Back-port of selected performance improvements from development
11943 branch, as well as improved support for PowerPC platforms.
11947 * Add lots of checks for memory allocation failure, error codes to indicate
11948 failure and freeing up memory if a failure occurs.
11950 *Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson*
11952 * Add new -passin argument to dgst.
11956 * Perform some character comparisons of different types in X509_NAME_cmp:
11957 this is needed for some certificates that re-encode DNs into UTF8Strings
11958 (in violation of RFC3280) and can't or won't issue name rollover
11963 * Make an explicit check during certificate validation to see that
11964 the CA setting in each certificate on the chain is correct. As a
11965 side effect always do the following basic checks on extensions,
11966 not just when there's an associated purpose to the check:
11968 - if there is an unhandled critical extension (unless the user
11969 has chosen to ignore this fault)
11970 - if the path length has been exceeded (if one is set at all)
11971 - that certain extensions fit the associated purpose (if one has
11976 ### Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
11978 * Avoid a race condition when CRLs are checked in a multi threaded
11979 environment. This would happen due to the reordering of the revoked
11980 entries during signature checking and serial number lookup. Now the
11981 encoding is cached and the serial number sort performed under a lock.
11982 Add new STACK function sk_is_sorted().
11986 * Add Delta CRL to the extension code.
11990 * Various fixes to s3_pkt.c so alerts are sent properly.
11992 *David Holmes <d.holmes@f5.com>*
11994 * Reduce the chances of duplicate issuer name and serial numbers (in
11995 violation of RFC3280) using the OpenSSL certificate creation utilities.
11996 This is done by creating a random 64 bit value for the initial serial
11997 number when a serial number file is created or when a self signed
11998 certificate is created using 'openssl req -x509'. The initial serial
11999 number file is created using 'openssl x509 -next_serial' in CA.pl
12000 rather than being initialized to 1.
12004 ### Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
12006 * Fix null-pointer assignment in do_change_cipher_spec() revealed
12007 by using the Codenomicon TLS Test Tool ([CVE-2004-0079])
12009 *Joe Orton, Steve Henson*
12011 * Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
12014 *Joe Orton, Steve Henson*
12016 * Make it possible to have multiple active certificates with the same
12017 subject in the CA index file. This is done only if the keyword
12018 'unique_subject' is set to 'no' in the main CA section (default
12019 if 'CA_default') of the configuration file. The value is saved
12020 with the database itself in a separate index attribute file,
12021 named like the index file with '.attr' appended to the name.
12025 * X509 verify fixes. Disable broken certificate workarounds when
12026 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
12027 keyUsage extension present. Don't accept CRLs with unhandled critical
12028 extensions: since verify currently doesn't process CRL extensions this
12029 rejects a CRL with *any* critical extensions. Add new verify error codes
12034 * When creating an OCSP nonce use an OCTET STRING inside the extnValue.
12035 A clarification of RFC2560 will require the use of OCTET STRINGs and
12036 some implementations cannot handle the current raw format. Since OpenSSL
12037 copies and compares OCSP nonces as opaque blobs without any attempt at
12038 parsing them this should not create any compatibility issues.
12042 * New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
12043 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
12044 this HMAC (and other) operations are several times slower than OpenSSL
12049 * Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
12051 *Peter Sylvester <Peter.Sylvester@EdelWeb.fr>*
12053 * Use the correct content when signing type "other".
12057 ### Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
12059 * Fix various bugs revealed by running the NISCC test suite:
12061 Stop out of bounds reads in the ASN1 code when presented with
12062 invalid tags (CVE-2003-0543 and CVE-2003-0544).
12064 Free up ASN1_TYPE correctly if ANY type is invalid ([CVE-2003-0545]).
12066 If verify callback ignores invalid public key errors don't try to check
12067 certificate signature with the NULL public key.
12071 * New -ignore_err option in ocsp application to stop the server
12072 exiting on the first error in a request.
12076 * In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
12077 if the server requested one: as stated in TLS 1.0 and SSL 3.0
12082 * In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
12083 extra data after the compression methods not only for TLS 1.0
12084 but also for SSL 3.0 (as required by the specification).
12086 *Bodo Moeller; problem pointed out by Matthias Loepfe*
12088 * Change X509_certificate_type() to mark the key as exported/exportable
12089 when it's 512 *bits* long, not 512 bytes.
12093 * Change AES_cbc_encrypt() so it outputs exact multiple of
12094 blocks during encryption.
12098 * Various fixes to base64 BIO and non blocking I/O. On write
12099 flushes were not handled properly if the BIO retried. On read
12100 data was not being buffered properly and had various logic bugs.
12101 This also affects blocking I/O when the data being decoded is a
12106 * Various S/MIME bugfixes and compatibility changes:
12107 output correct application/pkcs7 MIME type if
12108 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
12109 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
12110 of files as .eml work). Correctly handle very long lines in MIME
12115 ### Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
12117 * Countermeasure against the Klima-Pokorny-Rosa extension of
12118 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
12119 a protocol version number mismatch like a decryption error
12120 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
12124 * Turn on RSA blinding by default in the default implementation
12125 to avoid a timing attack. Applications that don't want it can call
12126 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
12127 They would be ill-advised to do so in most cases.
12129 *Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller*
12131 * Change RSA blinding code so that it works when the PRNG is not
12132 seeded (in this case, the secret RSA exponent is abused as
12133 an unpredictable seed -- if it is not unpredictable, there
12134 is no point in blinding anyway). Make RSA blinding thread-safe
12135 by remembering the creator's thread ID in rsa->blinding and
12136 having all other threads use local one-time blinding factors
12137 (this requires more computation than sharing rsa->blinding, but
12138 avoids excessive locking; and if an RSA object is not shared
12139 between threads, blinding will still be very fast).
12143 * Fixed a typo bug that would cause ENGINE_set_default() to set an
12144 ENGINE as defaults for all supported algorithms irrespective of
12145 the 'flags' parameter. 'flags' is now honoured, so applications
12146 should make sure they are passing it correctly.
12150 * Target "mingw" now allows native Windows code to be generated in
12151 the Cygwin environment as well as with the MinGW compiler.
12155 ### Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
12157 * In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
12158 via timing by performing a MAC computation even if incorrect
12159 block cipher padding has been found. This is a countermeasure
12160 against active attacks where the attacker has to distinguish
12161 between bad padding and a MAC verification error. ([CVE-2003-0078])
12163 *Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
12164 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
12165 Martin Vuagnoux (EPFL, Ilion)*
12167 * Make the no-err option work as intended. The intention with no-err
12168 is not to have the whole error stack handling routines removed from
12169 libcrypto, it's only intended to remove all the function name and
12170 reason texts, thereby removing some of the footprint that may not
12171 be interesting if those errors aren't displayed anyway.
12173 NOTE: it's still possible for any application or module to have its
12174 own set of error texts inserted. The routines are there, just not
12175 used by default when no-err is given.
12179 * Add support for FreeBSD on IA64.
12181 *dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454*
12183 * Adjust DES_cbc_cksum() so it returns the same value as the MIT
12184 Kerberos function mit_des_cbc_cksum(). Before this change,
12185 the value returned by DES_cbc_cksum() was like the one from
12186 mit_des_cbc_cksum(), except the bytes were swapped.
12188 *Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte*
12190 * Allow an application to disable the automatic SSL chain building.
12191 Before this a rather primitive chain build was always performed in
12192 ssl3_output_cert_chain(): an application had no way to send the
12193 correct chain if the automatic operation produced an incorrect result.
12195 Now the chain builder is disabled if either:
12197 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
12199 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
12201 The reasoning behind this is that an application would not want the
12202 auto chain building to take place if extra chain certificates are
12203 present and it might also want a means of sending no additional
12204 certificates (for example the chain has two certificates and the
12209 * Add the possibility to build without the ENGINE framework.
12211 *Steven Reddie <smr@essemer.com.au> via Richard Levitte*
12213 * Under Win32 gmtime() can return NULL: check return value in
12214 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
12218 * DSA routines: under certain error conditions uninitialized BN objects
12219 could be freed. Solution: make sure initialization is performed early
12220 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
12221 Nils Larsch <nla@trustcenter.de> via PR#459)
12225 * Another fix for SSLv2 session ID handling: the session ID was incorrectly
12226 checked on reconnect on the client side, therefore session resumption
12227 could still fail with a "ssl session id is different" error. This
12228 behaviour is masked when SSL_OP_ALL is used due to
12229 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
12230 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
12231 followup to PR #377.
12235 * IA-32 assembler support enhancements: unified ELF targets, support
12236 for SCO/Caldera platforms, fix for Cygwin shared build.
12240 * Add support for FreeBSD on sparc64. As a consequence, support for
12241 FreeBSD on non-x86 processors is separate from x86 processors on
12242 the config script, much like the NetBSD support.
12244 *Richard Levitte & Kris Kennaway <kris@obsecurity.org>*
12246 ### Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
12248 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
12251 * Fix session ID handling in SSLv2 client code: the SERVER FINISHED
12252 code (06) was taken as the first octet of the session ID and the last
12253 octet was ignored consequently. As a result SSLv2 client side session
12254 caching could not have worked due to the session ID mismatch between
12256 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
12261 * Change the declaration of needed Kerberos libraries to use EX_LIBS
12262 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
12267 * The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
12268 seems that in spite of existing for more than a year, many application
12269 author have done nothing to provide the necessary callbacks, which
12270 means that this particular engine will not work properly anywhere.
12271 This is a very unfortunate situation which forces us, in the name
12272 of usability, to give the hw_ncipher.c a static lock, which is part
12274 NOTE: This is for the 0.9.7 series ONLY. This hack will never
12275 appear in 0.9.8 or later. We EXPECT application authors to have
12276 dealt properly with this when 0.9.8 is released (unless we actually
12277 make such changes in the libcrypto locking code that changes will
12278 have to be made anyway).
12282 * In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
12283 octets have been read, EOF or an error occurs. Without this change
12284 some truncated ASN1 structures will not produce an error.
12288 * Disable Heimdal support, since it hasn't been fully implemented.
12289 Still give the possibility to force the use of Heimdal, but with
12290 warnings and a request that patches get sent to openssl-dev.
12294 * Add the VC-CE target, introduce the WINCE sysname, and add
12295 INSTALL.WCE and appropriate conditionals to make it build.
12297 *Steven Reddie <smr@essemer.com.au> via Richard Levitte*
12299 * Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
12300 cygssl-x.y.z.dll, where x, y and z are the major, minor and
12301 edit numbers of the version.
12303 *Corinna Vinschen <vinschen@redhat.com> and Richard Levitte*
12305 * Introduce safe string copy and catenation functions
12306 (BUF_strlcpy() and BUF_strlcat()).
12308 *Ben Laurie (CHATS) and Richard Levitte*
12310 * Avoid using fixed-size buffers for one-line DNs.
12312 *Ben Laurie (CHATS)*
12314 * Add BUF_MEM_grow_clean() to avoid information leakage when
12315 resizing buffers containing secrets, and use where appropriate.
12317 *Ben Laurie (CHATS)*
12319 * Avoid using fixed size buffers for configuration file location.
12321 *Ben Laurie (CHATS)*
12323 * Avoid filename truncation for various CA files.
12325 *Ben Laurie (CHATS)*
12327 * Use sizeof in preference to magic numbers.
12329 *Ben Laurie (CHATS)*
12331 * Avoid filename truncation in cert requests.
12333 *Ben Laurie (CHATS)*
12335 * Add assertions to check for (supposedly impossible) buffer
12338 *Ben Laurie (CHATS)*
12340 * Don't cache truncated DNS entries in the local cache (this could
12341 potentially lead to a spoofing attack).
12343 *Ben Laurie (CHATS)*
12345 * Fix various buffers to be large enough for hex/decimal
12346 representations in a platform independent manner.
12348 *Ben Laurie (CHATS)*
12350 * Add CRYPTO_realloc_clean() to avoid information leakage when
12351 resizing buffers containing secrets, and use where appropriate.
12353 *Ben Laurie (CHATS)*
12355 * Add BIO_indent() to avoid much slightly worrying code to do
12358 *Ben Laurie (CHATS)*
12360 * Convert sprintf()/BIO_puts() to BIO_printf().
12362 *Ben Laurie (CHATS)*
12364 * buffer_gets() could terminate with the buffer only half
12367 *Ben Laurie (CHATS)*
12369 * Add assertions to prevent user-supplied crypto functions from
12370 overflowing internal buffers by having large block sizes, etc.
12372 *Ben Laurie (CHATS)*
12374 * New OPENSSL_assert() macro (similar to assert(), but enabled
12377 *Ben Laurie (CHATS)*
12379 * Eliminate unused copy of key in RC4.
12381 *Ben Laurie (CHATS)*
12383 * Eliminate unused and incorrectly sized buffers for IV in pem.h.
12385 *Ben Laurie (CHATS)*
12387 * Fix off-by-one error in EGD path.
12389 *Ben Laurie (CHATS)*
12391 * If RANDFILE path is too long, ignore instead of truncating.
12393 *Ben Laurie (CHATS)*
12395 * Eliminate unused and incorrectly sized X.509 structure
12398 *Ben Laurie (CHATS)*
12400 * Eliminate unused and dangerous function knumber().
12402 *Ben Laurie (CHATS)*
12404 * Eliminate unused and dangerous structure, KSSL_ERR.
12406 *Ben Laurie (CHATS)*
12408 * Protect against overlong session ID context length in an encoded
12409 session object. Since these are local, this does not appear to be
12412 *Ben Laurie (CHATS)*
12414 * Change from security patch (see 0.9.6e below) that did not affect
12415 the 0.9.6 release series:
12417 Remote buffer overflow in SSL3 protocol - an attacker could
12418 supply an oversized master key in Kerberos-enabled versions.
12421 *Ben Laurie (CHATS)*
12423 * Change the SSL kerb5 codes to match RFC 2712.
12427 * Make -nameopt work fully for req and add -reqopt switch.
12429 *Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson*
12431 * The "block size" for block ciphers in CFB and OFB mode should be 1.
12433 *Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>*
12435 * Make sure tests can be performed even if the corresponding algorithms
12436 have been removed entirely. This was also the last step to make
12437 OpenSSL compilable with DJGPP under all reasonable conditions.
12439 *Richard Levitte, Doug Kaufman <dkaufman@rahul.net>*
12441 * Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
12442 to allow version independent disabling of normally unselected ciphers,
12443 which may be activated as a side-effect of selecting a single cipher.
12445 (E.g., cipher list string "RSA" enables ciphersuites that are left
12446 out of "ALL" because they do not provide symmetric encryption.
12447 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
12449 *Lutz Jaenicke, Bodo Moeller*
12451 * Add appropriate support for separate platform-dependent build
12452 directories. The recommended way to make a platform-dependent
12453 build directory is the following (tested on Linux), maybe with
12456 # Place yourself outside of the OpenSSL source tree. In
12457 # this example, the environment variable OPENSSL_SOURCE
12458 # is assumed to contain the absolute OpenSSL source directory.
12459 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
12460 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
12461 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
12462 mkdir -p `dirname $F`
12463 ln -s $OPENSSL_SOURCE/$F $F
12466 To be absolutely sure not to disturb the source tree, a "make clean"
12467 is a good thing. If it isn't successful, don't worry about it,
12468 it probably means the source directory is very clean.
12472 * Make sure any ENGINE control commands make local copies of string
12473 pointers passed to them whenever necessary. Otherwise it is possible
12474 the caller may have overwritten (or deallocated) the original string
12475 data when a later ENGINE operation tries to use the stored values.
12477 *Götz Babin-Ebell <babinebell@trustcenter.de>*
12479 * Improve diagnostics in file reading and command-line digests.
12481 *Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>*
12483 * Add AES modes CFB and OFB to the object database. Correct an
12484 error in AES-CFB decryption.
12488 * Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
12489 allows existing EVP_CIPHER_CTX structures to be reused after
12490 calling `EVP_*Final()`. This behaviour is used by encryption
12491 BIOs and some applications. This has the side effect that
12492 applications must explicitly clean up cipher contexts with
12493 EVP_CIPHER_CTX_cleanup() or they will leak memory.
12497 * Check the values of dna and dnb in bn_mul_recursive before calling
12498 bn_mul_comba (a non zero value means the a or b arrays do not contain
12499 n2 elements) and fallback to bn_mul_normal if either is not zero.
12503 * Fix escaping of non-ASCII characters when using the -subj option
12504 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
12508 * Make object definitions compliant to LDAP (RFC2256): SN is the short
12509 form for "surname", serialNumber has no short form.
12510 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
12511 therefore remove "mail" short name for "internet 7".
12512 The OID for unique identifiers in X509 certificates is
12513 x500UniqueIdentifier, not uniqueIdentifier.
12514 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
12518 * Add an "init" command to the ENGINE config module and auto initialize
12519 ENGINEs. Without any "init" command the ENGINE will be initialized
12520 after all ctrl commands have been executed on it. If init=1 the
12521 ENGINE is initialized at that point (ctrls before that point are run
12522 on the uninitialized ENGINE and after on the initialized one). If
12523 init=0 then the ENGINE will not be initialized at all.
12527 * Fix the 'app_verify_callback' interface so that the user-defined
12528 argument is actually passed to the callback: In the
12529 SSL_CTX_set_cert_verify_callback() prototype, the callback
12530 declaration has been changed from
12533 int (*cb)(X509_STORE_CTX *,void *);
12534 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
12535 i=s->ctx->app_verify_callback(&ctx)
12536 has been changed into
12537 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
12539 To update applications using SSL_CTX_set_cert_verify_callback(),
12540 a dummy argument can be added to their callback functions.
12542 *D. K. Smetters <smetters@parc.xerox.com>*
12544 * Added the '4758cca' ENGINE to support IBM 4758 cards.
12546 *Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe*
12548 * Add and OPENSSL_LOAD_CONF define which will cause
12549 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
12550 This allows older applications to transparently support certain
12551 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
12552 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
12553 load the config file and OPENSSL_add_all_algorithms_conf() which will
12554 always load it have also been added.
12558 * Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
12559 Adjust NIDs and EVP layer.
12561 *Stephen Sprunk <stephen@sprunk.org> and Richard Levitte*
12563 * Config modules support in openssl utility.
12565 Most commands now load modules from the config file,
12566 though in a few (such as version) this isn't done
12567 because it couldn't be used for anything.
12569 In the case of ca and req the config file used is
12570 the same as the utility itself: that is the -config
12571 command line option can be used to specify an
12576 * Move default behaviour from OPENSSL_config(). If appname is NULL
12577 use "openssl_conf" if filename is NULL use default openssl config file.
12581 * Add an argument to OPENSSL_config() to allow the use of an alternative
12582 config section name. Add a new flag to tolerate a missing config file
12583 and move code to CONF_modules_load_file().
12587 * Support for crypto accelerator cards from Accelerated Encryption
12588 Processing, www.aep.ie. (Use engine 'aep')
12589 The support was copied from 0.9.6c [engine] and adapted/corrected
12590 to work with the new engine framework.
12592 *AEP Inc. and Richard Levitte*
12594 * Support for SureWare crypto accelerator cards from Baltimore
12595 Technologies. (Use engine 'sureware')
12596 The support was copied from 0.9.6c [engine] and adapted
12597 to work with the new engine framework.
12601 * Have the CHIL engine fork-safe (as defined by nCipher) and actually
12602 make the newer ENGINE framework commands for the CHIL engine work.
12604 *Toomas Kiisk <vix@cyber.ee> and Richard Levitte*
12606 * Make it possible to produce shared libraries on ReliantUNIX.
12608 *Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte*
12610 * Add the configuration target debug-linux-ppro.
12611 Make 'openssl rsa' use the general key loading routines
12612 implemented in `apps.c`, and make those routines able to
12613 handle the key format FORMAT_NETSCAPE and the variant
12616 *Toomas Kiisk <vix@cyber.ee> via Richard Levitte*
12618 * Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
12620 *Toomas Kiisk <vix@cyber.ee> via Richard Levitte*
12622 * Add -keyform to rsautl, and document -engine.
12624 *Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>*
12626 * Change BIO_new_file (crypto/bio/bss_file.c) to use new
12627 BIO_R_NO_SUCH_FILE error code rather than the generic
12628 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
12632 * Add new functions
12633 ERR_peek_last_error
12634 ERR_peek_last_error_line
12635 ERR_peek_last_error_line_data.
12636 These are similar to
12638 ERR_peek_error_line
12639 ERR_peek_error_line_data,
12640 but report on the latest error recorded rather than the first one
12641 still in the error queue.
12643 *Ben Laurie, Bodo Moeller*
12645 * default_algorithms option in ENGINE config module. This allows things
12647 default_algorithms = ALL
12648 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
12652 * Preliminary ENGINE config module.
12656 * New experimental application configuration code.
12660 * Change the AES code to follow the same name structure as all other
12661 symmetric ciphers, and behave the same way. Move everything to
12662 the directory crypto/aes, thereby obsoleting crypto/rijndael.
12664 *Stephen Sprunk <stephen@sprunk.org> and Richard Levitte*
12666 * SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
12668 *Ben Laurie and Theo de Raadt*
12670 * Add option to output public keys in req command.
12672 *Massimiliano Pala madwolf@openca.org*
12674 * Use wNAFs in EC_POINTs_mul() for improved efficiency
12675 (up to about 10% better than before for P-192 and P-224).
12679 * New functions/macros
12681 SSL_CTX_set_msg_callback(ctx, cb)
12682 SSL_CTX_set_msg_callback_arg(ctx, arg)
12683 SSL_set_msg_callback(ssl, cb)
12684 SSL_set_msg_callback_arg(ssl, arg)
12686 to request calling a callback function
12688 void cb(int write_p, int version, int content_type,
12689 const void *buf, size_t len, SSL *ssl, void *arg)
12691 whenever a protocol message has been completely received
12692 (write_p == 0) or sent (write_p == 1). Here 'version' is the
12693 protocol version according to which the SSL library interprets
12694 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
12695 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
12696 the content type as defined in the SSL 3.0/TLS 1.0 protocol
12697 specification (change_cipher_spec(20), alert(21), handshake(22)).
12698 'buf' and 'len' point to the actual message, 'ssl' to the
12699 SSL object, and 'arg' is the application-defined value set by
12700 SSL[_CTX]_set_msg_callback_arg().
12702 'openssl s_client' and 'openssl s_server' have new '-msg' options
12703 to enable a callback that displays all protocol messages.
12707 * Change the shared library support so shared libraries are built as
12708 soon as the corresponding static library is finished, and thereby get
12709 openssl and the test programs linked against the shared library.
12710 This still only happens when the keyword "shard" has been given to
12711 the configuration scripts.
12713 NOTE: shared library support is still an experimental thing, and
12714 backward binary compatibility is still not guaranteed.
12716 *"Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte*
12718 * Add support for Subject Information Access extension.
12720 *Peter Sylvester <Peter.Sylvester@EdelWeb.fr>*
12722 * Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
12723 additional bytes when new memory had to be allocated, not just
12724 when reusing an existing buffer.
12728 * New command line and configuration option 'utf8' for the req command.
12729 This allows field values to be specified as UTF8 strings.
12733 * Add -multi and -mr options to "openssl speed" - giving multiple parallel
12734 runs for the former and machine-readable output for the latter.
12738 * Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
12739 of the e-mail address in the DN (i.e., it will go into a certificate
12740 extension only). The new configuration file option 'email_in_dn = no'
12741 has the same effect.
12743 *Massimiliano Pala madwolf@openca.org*
12745 * Change all functions with names starting with `des_` to be starting
12746 with `DES_` instead. Add wrappers that are compatible with libdes,
12747 but are named `_ossl_old_des_*`. Finally, add macros that map the
12748 `des_*` symbols to the corresponding `_ossl_old_des_*` if libdes
12749 compatibility is desired. If OpenSSL 0.9.6c compatibility is
12750 desired, the `des_*` symbols will be mapped to `DES_*`, with one
12753 Since we provide two compatibility mappings, the user needs to
12754 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
12755 compatibility is desired. The default (i.e., when that macro
12756 isn't defined) is OpenSSL 0.9.6c compatibility.
12758 There are also macros that enable and disable the support of old
12759 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
12760 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
12761 are defined, the default will apply: to support the old des routines.
12763 In either case, one must include openssl/des.h to get the correct
12764 definitions. Do not try to just include openssl/des_old.h, that
12767 NOTE: This is a major break of an old API into a new one. Software
12768 authors are encouraged to switch to the `DES_` style functions. Some
12769 time in the future, des_old.h and the libdes compatibility functions
12770 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
12771 default), and then completely removed.
12775 * Test for certificates which contain unsupported critical extensions.
12776 If such a certificate is found during a verify operation it is
12777 rejected by default: this behaviour can be overridden by either
12778 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
12779 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
12780 X509_supported_extension() has also been added which returns 1 if a
12781 particular extension is supported.
12785 * Modify the behaviour of EVP cipher functions in similar way to digests
12786 to retain compatibility with existing code.
12790 * Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
12791 compatibility with existing code. In particular the 'ctx' parameter does
12792 not have to be to be initialized before the call to EVP_DigestInit() and
12793 it is tidied up after a call to EVP_DigestFinal(). New function
12794 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
12795 EVP_MD_CTX_copy() changed to not require the destination to be
12796 initialized valid and new function EVP_MD_CTX_copy_ex() added which
12797 requires the destination to be valid.
12799 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
12800 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
12804 * Change ssl3_get_message (ssl/s3_both.c) and the functions using it
12805 so that complete 'Handshake' protocol structures are kept in memory
12806 instead of overwriting 'msg_type' and 'length' with 'body' data.
12810 * Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
12812 *Massimo Santin via Richard Levitte*
12814 * Major restructuring to the underlying ENGINE code. This includes
12815 reduction of linker bloat, separation of pure "ENGINE" manipulation
12816 (initialisation, etc) from functionality dealing with implementations
12817 of specific crypto interfaces. This change also introduces integrated
12818 support for symmetric ciphers and digest implementations - so ENGINEs
12819 can now accelerate these by providing EVP_CIPHER and EVP_MD
12820 implementations of their own. This is detailed in
12821 [crypto/engine/README.md](crypto/engine/README.md)
12822 as it couldn't be adequately described here. However, there are a few
12823 API changes worth noting - some RSA, DSA, DH, and RAND functions that
12824 were changed in the original introduction of ENGINE code have now
12825 reverted back - the hooking from this code to ENGINE is now a good
12826 deal more passive and at run-time, operations deal directly with
12827 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
12828 dereferencing through an ENGINE pointer any more. Also, the ENGINE
12829 functions dealing with `BN_MOD_EXP[_CRT]` handlers have been removed -
12830 they were not being used by the framework as there is no concept of a
12831 BIGNUM_METHOD and they could not be generalised to the new
12832 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
12833 ENGINE_cpy() has been removed as it cannot be consistently defined in
12838 * Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
12842 * Change mkdef.pl to sort symbols that get the same entry number,
12843 and make sure the automatically generated functions `ERR_load_*`
12844 become part of libeay.num as well.
12848 * New function SSL_renegotiate_pending(). This returns true once
12849 renegotiation has been requested (either SSL_renegotiate() call
12850 or HelloRequest/ClientHello received from the peer) and becomes
12851 false once a handshake has been completed.
12852 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
12853 sends a HelloRequest, but does not ensure that a handshake takes
12854 place. SSL_renegotiate_pending() is useful for checking if the
12855 client has followed the request.)
12859 * New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
12860 By default, clients may request session resumption even during
12861 renegotiation (if session ID contexts permit); with this option,
12862 session resumption is possible only in the first handshake.
12864 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
12865 more bits available for options that should not be part of
12866 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
12870 * Add some demos for certificate and certificate request creation.
12874 * Make maximum certificate chain size accepted from the peer application
12875 settable (`SSL*_get/set_max_cert_list()`), as proposed by
12876 "Douglas E. Engert" <deengert@anl.gov>.
12880 * Add support for shared libraries for Unixware-7
12881 (Boyd Lynn Gerber <gerberb@zenez.com>).
12885 * Add a "destroy" handler to ENGINEs that allows structural cleanup to
12886 be done prior to destruction. Use this to unload error strings from
12887 ENGINEs that load their own error strings. NB: This adds two new API
12888 functions to "get" and "set" this destroy handler in an ENGINE.
12892 * Alter all existing ENGINE implementations (except "openssl" and
12893 "openbsd") to dynamically instantiate their own error strings. This
12894 makes them more flexible to be built both as statically-linked ENGINEs
12895 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
12896 Also, add stub code to each that makes building them as self-contained
12897 shared-libraries easier (see [README-Engine.md](README-Engine.md)).
12901 * Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
12902 implementations into applications that are completely implemented in
12903 self-contained shared-libraries. The "dynamic" ENGINE exposes control
12904 commands that can be used to configure what shared-library to load and
12905 to control aspects of the way it is handled. Also, made an update to
12906 the [README-Engine.md](README-Engine.md) file
12907 that brings its information up-to-date and
12908 provides some information and instructions on the "dynamic" ENGINE
12909 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
12913 * Make it possible to unload ranges of ERR strings with a new
12914 "ERR_unload_strings" function.
12918 * Add a copy() function to EVP_MD.
12922 * Make EVP_MD routines take a context pointer instead of just the
12923 md_data void pointer.
12927 * Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
12928 that the digest can only process a single chunk of data
12929 (typically because it is provided by a piece of
12930 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
12931 is only going to provide a single chunk of data, and hence the
12932 framework needn't accumulate the data for oneshot drivers.
12936 * As with "ERR", make it possible to replace the underlying "ex_data"
12937 functions. This change also alters the storage and management of global
12938 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
12939 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
12940 index counters. The API functions that use this state have been changed
12941 to take a "class_index" rather than pointers to the class's local STACK
12942 and counter, and there is now an API function to dynamically create new
12943 classes. This centralisation allows us to (a) plug a lot of the
12944 thread-safety problems that existed, and (b) makes it possible to clean
12945 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
12946 such data would previously have always leaked in application code and
12947 workarounds were in place to make the memory debugging turn a blind eye
12948 to it. Application code that doesn't use this new function will still
12949 leak as before, but their memory debugging output will announce it now
12950 rather than letting it slide.
12952 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
12953 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
12954 has a return value to indicate success or failure.
12958 * Make it possible to replace the underlying "ERR" functions such that the
12959 global state (2 LHASH tables and 2 locks) is only used by the "default"
12960 implementation. This change also adds two functions to "get" and "set"
12961 the implementation prior to it being automatically set the first time
12962 any other ERR function takes place. Ie. an application can call "get",
12963 pass the return value to a module it has just loaded, and that module
12964 can call its own "set" function using that value. This means the
12965 module's "ERR" operations will use (and modify) the error state in the
12966 application and not in its own statically linked copy of OpenSSL code.
12970 * Give DH, DSA, and RSA types their own `*_up_ref()` function to increment
12971 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
12972 the operation, and provides a more encapsulated way for external code
12973 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
12974 to use these functions rather than manually incrementing the counts.
12976 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
12980 * Add EVP test program.
12984 * Add symmetric cipher support to ENGINE. Expect the API to change!
12988 * New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
12989 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
12990 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
12991 These allow a CRL to be built without having to access X509_CRL fields
12992 directly. Modify 'ca' application to use new functions.
12996 * Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
12997 bug workarounds. Rollback attack detection is a security feature.
12998 The problem will only arise on OpenSSL servers when TLSv1 is not
12999 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
13000 Software authors not wanting to support TLSv1 will have special reasons
13001 for their choice and can explicitly enable this option.
13003 *Bodo Moeller, Lutz Jaenicke*
13005 * Rationalise EVP so it can be extended: don't include a union of
13006 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
13007 (similar to those existing for EVP_CIPHER_CTX).
13012 EVP_MD_CTX_init(&md); /* new function call */
13013 EVP_DigestInit(&md, EVP_sha1());
13014 EVP_DigestUpdate(&md, in, len);
13015 EVP_DigestFinal(&md, out, NULL);
13016 EVP_MD_CTX_cleanup(&md); /* new function call */
13020 * Make DES key schedule conform to the usual scheme, as well as
13021 correcting its structure. This means that calls to DES functions
13022 now have to pass a pointer to a des_key_schedule instead of a
13023 plain des_key_schedule (which was actually always a pointer
13026 des_key_schedule ks;
13028 des_set_key_checked(..., &ks);
13029 des_ncbc_encrypt(..., &ks, ...);
13031 (Note that a later change renames 'des_...' into 'DES_...'.)
13035 * Initial reduction of linker bloat: the use of some functions, such as
13036 PEM causes large amounts of unused functions to be linked in due to
13037 poor organisation. For example pem_all.c contains every PEM function
13038 which has a knock on effect of linking in large amounts of (unused)
13039 ASN1 code. Grouping together similar functions and splitting unrelated
13040 functions prevents this.
13044 * Cleanup of EVP macros.
13048 * Change historical references to `{NID,SN,LN}_des_ede` and ede3 to add the
13049 correct `_ecb suffix`.
13053 * Add initial OCSP responder support to ocsp application. The
13054 revocation information is handled using the text based index
13055 use by the ca application. The responder can either handle
13056 requests generated internally, supplied in files (for example
13057 via a CGI script) or using an internal minimal server.
13061 * Add configuration choices to get zlib compression for TLS.
13065 * Changes to Kerberos SSL for RFC 2712 compliance:
13066 1. Implemented real KerberosWrapper, instead of just using
13067 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
13068 2. Implemented optional authenticator field of KerberosWrapper.
13070 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
13071 and authenticator structs; see crypto/krb5/.
13073 Generalized Kerberos calls to support multiple Kerberos libraries.
13074 *Vern Staats <staatsvr@asc.hpc.mil>, Jeffrey Altman <jaltman@columbia.edu>
13075 via Richard Levitte*
13077 * Cause 'openssl speed' to use fully hard-coded DSA keys as it
13078 already does with RSA. testdsa.h now has 'priv_key/pub_key'
13079 values for each of the key sizes rather than having just
13080 parameters (and 'speed' generating keys each time).
13084 * Speed up EVP routines.
13087 pe 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
13088 s-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
13089 s-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
13090 s-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
13092 s-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
13093 s-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
13094 s-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
13097 s-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
13099 s-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
13103 * Added the OS2-EMX target.
13105 *"Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte*
13107 * Rewrite commands to use `NCONF` routines instead of the old `CONF`.
13108 New functions to support `NCONF` routines in extension code.
13109 New function `CONF_set_nconf()`
13110 to allow functions which take an `NCONF` to also handle the old `LHASH`
13111 structure: this means that the old `CONF` compatible routines can be
13112 retained (in particular w.rt. extensions) without having to duplicate the
13113 code. New function `X509V3_add_ext_nconf_sk()` to add extensions to a stack.
13117 * Enhance the general user interface with mechanisms for inner control
13118 and with possibilities to have yes/no kind of prompts.
13122 * Change all calls to low-level digest routines in the library and
13123 applications to use EVP. Add missing calls to HMAC_cleanup() and
13124 don't assume HMAC_CTX can be copied using memcpy().
13126 *Verdon Walker <VWalker@novell.com>, Steve Henson*
13128 * Add the possibility to control engines through control names but with
13129 arbitrary arguments instead of just a string.
13130 Change the key loaders to take a UI_METHOD instead of a callback
13131 function pointer. NOTE: this breaks binary compatibility with earlier
13132 versions of OpenSSL [engine].
13133 Adapt the nCipher code for these new conditions and add a card insertion
13138 * Enhance the general user interface with mechanisms to better support
13139 dialog box interfaces, application-defined prompts, the possibility
13140 to use defaults (for example default passwords from somewhere else)
13141 and interrupts/cancellations.
13145 * Tidy up PKCS#12 attribute handling. Add support for the CSP name
13146 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
13150 * Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
13151 tidy up some unnecessarily weird code in 'sk_new()').
13153 *Geoff, reported by Diego Tartara <dtartara@novamens.com>*
13155 * Change the key loading routines for ENGINEs to use the same kind
13156 callback (pem_password_cb) as all other routines that need this
13161 * Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
13162 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
13163 than this minimum value is recommended.
13167 * New random seeder for OpenVMS, using the system process statistics
13168 that are easily reachable.
13172 * Windows apparently can't transparently handle global
13173 variables defined in DLLs. Initialisations such as:
13175 const ASN1_ITEM *it = &ASN1_INTEGER_it;
13177 won't compile. This is used by the any applications that need to
13178 declare their own ASN1 modules. This was fixed by adding the option
13179 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
13180 needed for static libraries under Win32.
13184 * New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
13185 setting of purpose and trust fields. New X509_STORE trust and
13186 purpose functions and tidy up setting in other SSL functions.
13190 * Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
13191 structure. These are inherited by X509_STORE_CTX when it is
13192 initialised. This allows various defaults to be set in the
13193 X509_STORE structure (such as flags for CRL checking and custom
13194 purpose or trust settings) for functions which only use X509_STORE_CTX
13195 internally such as S/MIME.
13197 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
13198 trust settings if they are not set in X509_STORE. This allows X509_STORE
13199 purposes and trust (in S/MIME for example) to override any set by default.
13201 Add command line options for CRL checking to smime, s_client and s_server
13206 * Initial CRL based revocation checking. If the CRL checking flag(s)
13207 are set then the CRL is looked up in the X509_STORE structure and
13208 its validity and signature checked, then if the certificate is found
13209 in the CRL the verify fails with a revoked error.
13211 Various new CRL related callbacks added to X509_STORE_CTX structure.
13213 Command line options added to 'verify' application to support this.
13215 This needs some additional work, such as being able to handle multiple
13216 CRLs with different times, extension based lookup (rather than just
13217 by subject name) and ultimately more complete V2 CRL extension
13222 * Add a general user interface API (crypto/ui/). This is designed
13223 to replace things like des_read_password and friends (backward
13224 compatibility functions using this new API are provided).
13225 The purpose is to remove prompting functions from the DES code
13226 section as well as provide for prompting through dialog boxes in
13227 a window system and the like.
13231 * Add "ex_data" support to ENGINE so implementations can add state at a
13232 per-structure level rather than having to store it globally.
13236 * Make it possible for ENGINE structures to be copied when retrieved by
13237 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
13238 This causes the "original" ENGINE structure to act like a template,
13239 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
13240 operational state can be localised to each ENGINE structure, despite the
13241 fact they all share the same "methods". New ENGINE structures returned in
13242 this case have no functional references and the return value is the single
13243 structural reference. This matches the single structural reference returned
13244 by ENGINE_by_id() normally, when it is incremented on the pre-existing
13249 * Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
13250 needs to match any other type at all we need to manually clear the
13255 * Changes to the "openssl engine" utility to include;
13256 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
13257 about an ENGINE's available control commands.
13258 - executing control commands from command line arguments using the
13259 '-pre' and '-post' switches. '-post' is only used if '-t' is
13260 specified and the ENGINE is successfully initialised. The syntax for
13261 the individual commands are colon-separated, for example;
13262 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
13266 * New dynamic control command support for ENGINEs. ENGINEs can now
13267 declare their own commands (numbers), names (strings), descriptions,
13268 and input types for run-time discovery by calling applications. A
13269 subset of these commands are implicitly classed as "executable"
13270 depending on their input type, and only these can be invoked through
13271 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
13272 can be based on user input, config files, etc). The distinction is
13273 that "executable" commands cannot return anything other than a boolean
13274 result and can only support numeric or string input, whereas some
13275 discoverable commands may only be for direct use through
13276 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
13277 pointers, or other custom uses. The "executable" commands are to
13278 support parameterisations of ENGINE behaviour that can be
13279 unambiguously defined by ENGINEs and used consistently across any
13280 OpenSSL-based application. Commands have been added to all the
13281 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
13282 control over shared-library paths without source code alterations.
13286 * Changed all ENGINE implementations to dynamically allocate their
13287 ENGINEs rather than declaring them statically. Apart from this being
13288 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
13289 this also allows the implementations to compile without using the
13290 internal engine_int.h header.
13294 * Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
13295 'const' value. Any code that should be able to modify a RAND_METHOD
13296 should already have non-const pointers to it (ie. they should only
13297 modify their own ones).
13301 * Made a variety of little tweaks to the ENGINE code.
13302 - "atalla" and "ubsec" string definitions were moved from header files
13303 to C code. "nuron" string definitions were placed in variables
13304 rather than hard-coded - allowing parameterisation of these values
13305 later on via ctrl() commands.
13306 - Removed unused "#if 0"'d code.
13307 - Fixed engine list iteration code so it uses ENGINE_free() to release
13308 structural references.
13309 - Constified the RAND_METHOD element of ENGINE structures.
13310 - Constified various get/set functions as appropriate and added
13311 missing functions (including a catch-all ENGINE_cpy that duplicates
13312 all ENGINE values onto a new ENGINE except reference counts/state).
13313 - Removed NULL parameter checks in get/set functions. Setting a method
13314 or function to NULL is a way of cancelling out a previously set
13315 value. Passing a NULL ENGINE parameter is just plain stupid anyway
13316 and doesn't justify the extra error symbols and code.
13317 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
13318 flags from engine_int.h to engine.h.
13319 - Changed prototypes for ENGINE handler functions (init(), finish(),
13320 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
13324 * Implement binary inversion algorithm for BN_mod_inverse in addition
13325 to the algorithm using long division. The binary algorithm can be
13326 used only if the modulus is odd. On 32-bit systems, it is faster
13327 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
13328 roughly 5-15% for 256-bit moduli), so we use it only for moduli
13329 up to 450 bits. In 64-bit environments, the binary algorithm
13330 appears to be advantageous for much longer moduli; here we use it
13331 for moduli up to 2048 bits.
13335 * Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
13336 could not support the combine flag in choice fields.
13340 * Add a 'copy_extensions' option to the 'ca' utility. This copies
13341 extensions from a certificate request to the certificate.
13345 * Allow multiple 'certopt' and 'nameopt' options to be separated
13346 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
13347 file: this allows the display of the certificate about to be
13348 signed to be customised, to allow certain fields to be included
13349 or excluded and extension details. The old system didn't display
13350 multicharacter strings properly, omitted fields not in the policy
13351 and couldn't display additional details such as extensions.
13355 * Function EC_POINTs_mul for multiple scalar multiplication
13356 of an arbitrary number of elliptic curve points
13357 \sum scalars[i]*points[i],
13358 optionally including the generator defined for the EC_GROUP:
13359 scalar*generator + \sum scalars[i]*points[i].
13361 EC_POINT_mul is a simple wrapper function for the typical case
13362 that the point list has just one item (besides the optional
13367 * First EC_METHODs for curves over GF(p):
13369 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
13370 operations and provides various method functions that can also
13371 operate with faster implementations of modular arithmetic.
13373 EC_GFp_mont_method() reuses most functions that are part of
13374 EC_GFp_simple_method, but uses Montgomery arithmetic.
13376 *Bodo Moeller; point addition and point doubling
13377 implementation directly derived from source code provided by
13378 Lenka Fibikova <fibikova@exp-math.uni-essen.de>*
13380 * Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
13381 crypto/ec/ec_lib.c):
13383 Curves are EC_GROUP objects (with an optional group generator)
13384 based on EC_METHODs that are built into the library.
13386 Points are EC_POINT objects based on EC_GROUP objects.
13388 Most of the framework would be able to handle curves over arbitrary
13389 finite fields, but as there are no obvious types for fields other
13390 than GF(p), some functions are limited to that for now.
13394 * Add the -HTTP option to s_server. It is similar to -WWW, but requires
13395 that the file contains a complete HTTP response.
13399 * Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
13400 change the def and num file printf format specifier from "%-40sXXX"
13401 to "%-39s XXX". The latter will always guarantee a space after the
13402 field while the former will cause them to run together if the field
13403 is 40 of more characters long.
13407 * Constify the cipher and digest 'method' functions and structures
13408 and modify related functions to take constant EVP_MD and EVP_CIPHER
13413 * Hide BN_CTX structure details in bn_lcl.h instead of publishing them
13414 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
13418 * Modify `EVP_Digest*()` routines so they now return values. Although the
13419 internal software routines can never fail additional hardware versions
13424 * Clean up crypto/err/err.h and change some error codes to avoid conflicts:
13426 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
13427 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
13430 ERR_R_NESTED_ASN1_ERROR
13432 ERR_R_MISSING_ASN1_EOS
13433 were 4 .. 9, conflicting with
13434 ERR_LIB_RSA (= ERR_R_RSA_LIB)
13436 ERR_LIB_PEM (= ERR_R_PEM_LIB).
13437 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
13439 Add new error code 'ERR_R_INTERNAL_ERROR'.
13443 * Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
13448 * New option '-subj arg' for 'openssl req' and 'openssl ca'. This
13449 sets the subject name for a new request or supersedes the
13450 subject name in a given request. Formats that can be parsed are
13451 'CN=Some Name, OU=myOU, C=IT'
13453 'CN=Some Name/OU=myOU/C=IT'.
13455 Add options '-batch' and '-verbose' to 'openssl req'.
13457 *Massimiliano Pala <madwolf@hackmasters.net>*
13459 * Introduce the possibility to access global variables through
13460 functions on platform were that's the best way to handle exporting
13461 global variables in shared libraries. To enable this functionality,
13462 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
13463 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
13464 is normally done by Configure or something similar).
13466 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
13467 in the source file (foo.c) like this:
13469 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
13470 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
13472 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
13473 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
13475 OPENSSL_DECLARE_GLOBAL(int,foo);
13476 #define foo OPENSSL_GLOBAL_REF(foo)
13477 OPENSSL_DECLARE_GLOBAL(double,bar);
13478 #define bar OPENSSL_GLOBAL_REF(bar)
13480 The #defines are very important, and therefore so is including the
13481 header file everywhere where the defined globals are used.
13483 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
13484 of ASN.1 items, but that structure is a bit different.
13486 The largest change is in util/mkdef.pl which has been enhanced with
13487 better and easier to understand logic to choose which symbols should
13488 go into the Windows .def files as well as a number of fixes and code
13489 cleanup (among others, algorithm keywords are now sorted
13490 lexicographically to avoid constant rewrites).
13494 * In BN_div() keep a copy of the sign of 'num' before writing the
13495 result to 'rm' because if rm==num the value will be overwritten
13496 and produce the wrong result if 'num' is negative: this caused
13497 problems with BN_mod() and BN_nnmod().
13501 * Function OCSP_request_verify(). This checks the signature on an
13502 OCSP request and verifies the signer certificate. The signer
13503 certificate is just checked for a generic purpose and OCSP request
13508 * Add OCSP_check_validity() function to check the validity of OCSP
13509 responses. OCSP responses are prepared in real time and may only
13510 be a few seconds old. Simply checking that the current time lies
13511 between thisUpdate and nextUpdate max reject otherwise valid responses
13512 caused by either OCSP responder or client clock inaccuracy. Instead
13513 we allow thisUpdate and nextUpdate to fall within a certain period of
13514 the current time. The age of the response can also optionally be
13515 checked. Two new options -validity_period and -status_age added to
13520 * If signature or public key algorithm is unrecognized print out its
13521 OID rather that just UNKNOWN.
13525 * Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
13526 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
13527 ID to be generated from the issuer certificate alone which can then be
13528 passed to OCSP_id_issuer_cmp().
13532 * New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
13533 ASN1 modules to export functions returning ASN1_ITEM pointers
13534 instead of the ASN1_ITEM structures themselves. This adds several
13535 new macros which allow the underlying ASN1 function/structure to
13536 be accessed transparently. As a result code should not use ASN1_ITEM
13537 references directly (such as &X509_it) but instead use the relevant
13538 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
13539 use of the new ASN1 code on platforms where exporting structures
13540 is problematical (for example in shared libraries) but exporting
13541 functions returning pointers to structures is not.
13545 * Add support for overriding the generation of SSL/TLS session IDs.
13546 These callbacks can be registered either in an SSL_CTX or per SSL.
13547 The purpose of this is to allow applications to control, if they wish,
13548 the arbitrary values chosen for use as session IDs, particularly as it
13549 can be useful for session caching in multiple-server environments. A
13550 command-line switch for testing this (and any client code that wishes
13551 to use such a feature) has been added to "s_server".
13553 *Geoff Thorpe, Lutz Jaenicke*
13555 * Modify mkdef.pl to recognise and parse preprocessor conditionals
13556 of the form `#if defined(...) || defined(...) || ...` and
13557 `#if !defined(...) && !defined(...) && ...`. This also avoids
13558 the growing number of special cases it was previously handling.
13562 * Make all configuration macros available for application by making
13563 sure they are available in opensslconf.h, by giving them names starting
13564 with `OPENSSL_` to avoid conflicts with other packages and by making
13565 sure e_os2.h will cover all platform-specific cases together with
13567 Additionally, it is now possible to define configuration/platform-
13568 specific names (called "system identities"). In the C code, these
13569 are prefixed with `OPENSSL_SYSNAME_`. e_os2.h will create another
13570 macro with the name beginning with `OPENSSL_SYS_`, which is determined
13571 from `OPENSSL_SYSNAME_*` or compiler-specific macros depending on
13576 * New option -set_serial to 'req' and 'x509' this allows the serial
13577 number to use to be specified on the command line. Previously self
13578 signed certificates were hard coded with serial number 0 and the
13579 CA options of 'x509' had to use a serial number in a file which was
13584 * New options to 'ca' utility to support V2 CRL entry extensions.
13585 Currently CRL reason, invalidity date and hold instruction are
13586 supported. Add new CRL extensions to V3 code and some new objects.
13590 * New function EVP_CIPHER_CTX_set_padding() this is used to
13591 disable standard block padding (aka PKCS#5 padding) in the EVP
13592 API, which was previously mandatory. This means that the data is
13593 not padded in any way and so the total length much be a multiple
13594 of the block size, otherwise an error occurs.
13598 * Initial (incomplete) OCSP SSL support.
13602 * New function OCSP_parse_url(). This splits up a URL into its host,
13603 port and path components: primarily to parse OCSP URLs. New -url
13604 option to ocsp utility.
13608 * New nonce behavior. The return value of OCSP_check_nonce() now
13609 reflects the various checks performed. Applications can decide
13610 whether to tolerate certain situations such as an absent nonce
13611 in a response when one was present in a request: the ocsp application
13612 just prints out a warning. New function OCSP_add1_basic_nonce()
13613 this is to allow responders to include a nonce in a response even if
13614 the request is nonce-less.
13618 * Disable stdin buffering in `load_cert()` (`apps/apps.c`) so that no certs are
13619 skipped when using openssl x509 multiple times on a single input file,
13620 e.g. `(openssl x509 -out cert1; openssl x509 -out cert2) <certs`.
13624 * Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
13625 set string type: to handle setting ASN1_TIME structures. Fix ca
13626 utility to correctly initialize revocation date of CRLs.
13630 * New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
13631 the clients preferred ciphersuites and rather use its own preferences.
13632 Should help to work around M$ SGC (Server Gated Cryptography) bug in
13633 Internet Explorer by ensuring unchanged hash method during stepup.
13634 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
13638 * Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
13639 to aes and add a new 'exist' option to print out symbols that don't
13644 * Additional options to ocsp utility to allow flags to be set and
13645 additional certificates supplied.
13649 * Add the option -VAfile to 'openssl ocsp', so the user can give the
13650 OCSP client a number of certificate to only verify the response
13655 * Update Rijndael code to version 3.0 and change EVP AES ciphers to
13656 handle the new API. Currently only ECB, CBC modes supported. Add new
13659 Add TLS AES ciphersuites as described in RFC3268, "Advanced
13660 Encryption Standard (AES) Ciphersuites for Transport Layer
13661 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
13662 not enabled by default and were not part of the "ALL" ciphersuite
13663 alias because they were not yet official; they could be
13664 explicitly requested by specifying the "AESdraft" ciphersuite
13665 group alias. In the final release of OpenSSL 0.9.7, the group
13666 alias is called "AES" and is part of "ALL".)
13668 *Ben Laurie, Steve Henson, Bodo Moeller*
13670 * New function OCSP_copy_nonce() to copy nonce value (if present) from
13671 request to response.
13675 * Functions for OCSP responders. OCSP_request_onereq_count(),
13676 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
13677 extract information from a certificate request. OCSP_response_create()
13678 creates a response and optionally adds a basic response structure.
13679 OCSP_basic_add1_status() adds a complete single response to a basic
13680 response and returns the OCSP_SINGLERESP structure just added (to allow
13681 extensions to be included for example). OCSP_basic_add1_cert() adds a
13682 certificate to a basic response and OCSP_basic_sign() signs a basic
13683 response with various flags. New helper functions ASN1_TIME_check()
13684 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
13685 (converts ASN1_TIME to GeneralizedTime).
13689 * Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
13690 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
13691 structure from a certificate. X509_pubkey_digest() digests the public_key
13692 contents: this is used in various key identifiers.
13696 * Make sk_sort() tolerate a NULL argument.
13698 *Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>*
13700 * New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
13701 passed by the function are trusted implicitly. If any of them signed the
13702 response then it is assumed to be valid and is not verified.
13706 * In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
13707 to data. This was previously part of the PKCS7 ASN1 code. This
13708 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
13709 *Steve Henson, reported by Kenneth R. Robinette
13710 <support@securenetterm.com>*
13712 * Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
13713 routines: without these tracing memory leaks is very painful.
13714 Fix leaks in PKCS12 and PKCS7 routines.
13718 * Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
13719 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
13720 effectively meant GeneralizedTime would never be used. Now it
13721 is initialised to -1 but X509_time_adj() now has to check the value
13722 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
13723 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
13724 *Steve Henson, reported by Kenneth R. Robinette
13725 <support@securenetterm.com>*
13727 * Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
13728 result in a zero length in the ASN1_INTEGER structure which was
13729 not consistent with the structure when d2i_ASN1_INTEGER() was used
13730 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
13731 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
13732 where it did not print out a minus for negative ASN1_INTEGER.
13736 * Add summary printout to ocsp utility. The various functions which
13737 convert status values to strings have been renamed to:
13738 OCSP_response_status_str(), OCSP_cert_status_str() and
13739 OCSP_crl_reason_str() and are no longer static. New options
13740 to verify nonce values and to disable verification. OCSP response
13741 printout format cleaned up.
13745 * Add additional OCSP certificate checks. These are those specified
13746 in RFC2560. This consists of two separate checks: the CA of the
13747 certificate being checked must either be the OCSP signer certificate
13748 or the issuer of the OCSP signer certificate. In the latter case the
13749 OCSP signer certificate must contain the OCSP signing extended key
13750 usage. This check is performed by attempting to match the OCSP
13751 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
13752 in the OCSP_CERTID structures of the response.
13756 * Initial OCSP certificate verification added to OCSP_basic_verify()
13757 and related routines. This uses the standard OpenSSL certificate
13758 verify routines to perform initial checks (just CA validity) and
13759 to obtain the certificate chain. Then additional checks will be
13760 performed on the chain. Currently the root CA is checked to see
13761 if it is explicitly trusted for OCSP signing. This is used to set
13762 a root CA as a global signing root: that is any certificate that
13763 chains to that CA is an acceptable OCSP signing certificate.
13767 * New '-extfile ...' option to 'openssl ca' for reading X.509v3
13768 extensions from a separate configuration file.
13769 As when reading extensions from the main configuration file,
13770 the '-extensions ...' option may be used for specifying the
13773 *Massimiliano Pala <madwolf@comune.modena.it>*
13775 * New OCSP utility. Allows OCSP requests to be generated or
13776 read. The request can be sent to a responder and the output
13777 parsed, outputted or printed in text form. Not complete yet:
13778 still needs to check the OCSP response validity.
13782 * New subcommands for 'openssl ca':
13783 `openssl ca -status <serial>` prints the status of the cert with
13784 the given serial number (according to the index file).
13785 `openssl ca -updatedb` updates the expiry status of certificates
13788 *Massimiliano Pala <madwolf@comune.modena.it>*
13790 * New '-newreq-nodes' command option to CA.pl. This is like
13791 '-newreq', but calls 'openssl req' with the '-nodes' option
13792 so that the resulting key is not encrypted.
13794 *Damien Miller <djm@mindrot.org>*
13796 * New configuration for the GNU Hurd.
13798 *Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte*
13800 * Initial code to implement OCSP basic response verify. This
13801 is currently incomplete. Currently just finds the signer's
13802 certificate and verifies the signature on the response.
13806 * New SSLeay_version code SSLEAY_DIR to determine the compiled-in
13807 value of OPENSSLDIR. This is available via the new '-d' option
13808 to 'openssl version', and is also included in 'openssl version -a'.
13812 * Allowing defining memory allocation callbacks that will be given
13813 file name and line number information in additional arguments
13814 (a `const char*` and an int). The basic functionality remains, as
13815 well as the original possibility to just replace malloc(),
13816 realloc() and free() by functions that do not know about these
13817 additional arguments. To register and find out the current
13818 settings for extended allocation functions, the following
13819 functions are provided:
13821 CRYPTO_set_mem_ex_functions
13822 CRYPTO_set_locked_mem_ex_functions
13823 CRYPTO_get_mem_ex_functions
13824 CRYPTO_get_locked_mem_ex_functions
13826 These work the same way as CRYPTO_set_mem_functions and friends.
13827 `CRYPTO_get_[locked_]mem_functions` now writes 0 where such an
13828 extended allocation function is enabled.
13829 Similarly, `CRYPTO_get_[locked_]mem_ex_functions` writes 0 where
13830 a conventional allocation function is enabled.
13832 *Richard Levitte, Bodo Moeller*
13834 * Finish off removing the remaining LHASH function pointer casts.
13835 There should no longer be any prototype-casting required when using
13836 the LHASH abstraction, and any casts that remain are "bugs". See
13837 the callback types and macros at the head of lhash.h for details
13838 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
13842 * Add automatic query of EGD sockets in RAND_poll() for the unix variant.
13843 If /dev/[u]random devices are not available or do not return enough
13844 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
13846 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
13847 /etc/entropy will be queried once each in this sequence, querying stops
13848 when enough entropy was collected without querying more sockets.
13852 * Change the Unix RAND_poll() variant to be able to poll several
13853 random devices, as specified by DEVRANDOM, until a sufficient amount
13854 of data has been collected. We spend at most 10 ms on each file
13855 (select timeout) and read in non-blocking mode. DEVRANDOM now
13856 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
13857 (previously it was just the string "/dev/urandom"), so on typical
13858 platforms the 10 ms delay will never occur.
13859 Also separate out the Unix variant to its own file, rand_unix.c.
13860 For VMS, there's a currently-empty rand_vms.c.
13864 * Move OCSP client related routines to ocsp_cl.c. These
13865 provide utility functions which an application needing
13866 to issue a request to an OCSP responder and analyse the
13867 response will typically need: as opposed to those which an
13868 OCSP responder itself would need which will be added later.
13870 OCSP_request_sign() signs an OCSP request with an API similar
13871 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
13872 response. OCSP_response_get1_basic() extracts basic response
13873 from response. OCSP_resp_find_status(): finds and extracts status
13874 information from an OCSP_CERTID structure (which will be created
13875 when the request structure is built). These are built from lower
13876 level functions which work on OCSP_SINGLERESP structures but
13877 won't normally be used unless the application wishes to examine
13878 extensions in the OCSP response for example.
13880 Replace nonce routines with a pair of functions.
13881 OCSP_request_add1_nonce() adds a nonce value and optionally
13882 generates a random value. OCSP_check_nonce() checks the
13883 validity of the nonce in an OCSP response.
13887 * Change function OCSP_request_add() to OCSP_request_add0_id().
13888 This doesn't copy the supplied OCSP_CERTID and avoids the
13889 need to free up the newly created id. Change return type
13890 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
13891 This can then be used to add extensions to the request.
13892 Deleted OCSP_request_new(), since most of its functionality
13893 is now in OCSP_REQUEST_new() (and the case insensitive name
13894 clash) apart from the ability to set the request name which
13895 will be added elsewhere.
13899 * Update OCSP API. Remove obsolete extensions argument from
13900 various functions. Extensions are now handled using the new
13901 OCSP extension code. New simple OCSP HTTP function which
13902 can be used to send requests and parse the response.
13906 * Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
13907 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
13908 uses the special reorder version of SET OF to sort the attributes
13909 and reorder them to match the encoded order. This resolves a long
13910 standing problem: a verify on a PKCS7 structure just after signing
13911 it used to fail because the attribute order did not match the
13912 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
13913 it uses the received order. This is necessary to tolerate some broken
13914 software that does not order SET OF. This is handled by encoding
13915 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
13916 to produce the required SET OF.
13920 * Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
13921 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
13922 files to get correct declarations of the ASN.1 item variables.
13926 * Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
13927 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
13928 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
13929 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
13930 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
13931 ASN1_ITEM and no wrapper functions.
13935 * New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
13936 replace the old function pointer based I/O routines. Change most of
13937 the `*_d2i_bio()` and `*_d2i_fp()` functions to use these.
13941 * Enhance mkdef.pl to be more accepting about spacing in C preprocessor
13942 lines, recognize more "algorithms" that can be deselected, and make
13943 it complain about algorithm deselection that isn't recognised.
13947 * New ASN1 functions to handle dup, sign, verify, digest, pack and
13948 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
13949 to use new functions. Add NO_ASN1_OLD which can be set to remove
13950 some old style ASN1 functions: this can be used to determine if old
13951 code will still work when these eventually go away.
13955 * New extension functions for OCSP structures, these follow the
13956 same conventions as certificates and CRLs.
13960 * New function X509V3_add1_i2d(). This automatically encodes and
13961 adds an extension. Its behaviour can be customised with various
13962 flags to append, replace or delete. Various wrappers added for
13963 certificates and CRLs.
13967 * Fix to avoid calling the underlying ASN1 print routine when
13968 an extension cannot be parsed. Correct a typo in the
13969 OCSP_SERVICELOC extension. Tidy up print OCSP format.
13973 * Make mkdef.pl parse some of the ASN1 macros and add appropriate
13974 entries for variables.
13978 * Add functionality to `apps/openssl.c` for detecting locking
13979 problems: As the program is single-threaded, all we have
13980 to do is register a locking callback using an array for
13981 storing which locks are currently held by the program.
13985 * Use a lock around the call to CRYPTO_get_ex_new_index() in
13986 SSL_get_ex_data_X509_STORE_idx(), which is used in
13987 ssl_verify_cert_chain() and thus can be called at any time
13988 during TLS/SSL handshakes so that thread-safety is essential.
13989 Unfortunately, the ex_data design is not at all suited
13990 for multi-threaded use, so it probably should be abolished.
13994 * Added Broadcom "ubsec" ENGINE to OpenSSL.
13996 *Broadcom, tweaked and integrated by Geoff Thorpe*
13998 * Move common extension printing code to new function
13999 X509V3_print_extensions(). Reorganise OCSP print routines and
14000 implement some needed OCSP ASN1 functions. Add OCSP extensions.
14004 * New function X509_signature_print() to remove duplication in some
14009 * Add a special meaning when SET OF and SEQUENCE OF flags are both
14010 set (this was treated exactly the same as SET OF previously). This
14011 is used to reorder the STACK representing the structure to match the
14012 encoding. This will be used to get round a problem where a PKCS7
14013 structure which was signed could not be verified because the STACK
14014 order did not reflect the encoded order.
14018 * Reimplement the OCSP ASN1 module using the new code.
14022 * Update the X509V3 code to permit the use of an ASN1_ITEM structure
14023 for its ASN1 operations. The old style function pointers still exist
14024 for now but they will eventually go away.
14028 * Merge in replacement ASN1 code from the ASN1 branch. This almost
14029 completely replaces the old ASN1 functionality with a table driven
14030 encoder and decoder which interprets an ASN1_ITEM structure describing
14031 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
14032 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
14033 has also been converted to the new form.
14037 * Change BN_mod_exp_recp so that negative moduli are tolerated
14038 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
14039 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
14040 for negative moduli.
14044 * Fix BN_uadd and BN_usub: Always return non-negative results instead
14045 of not touching the result's sign bit.
14049 * BN_div bugfix: If the result is 0, the sign (res->neg) must not be
14054 * Changed the LHASH code to use prototypes for callbacks, and created
14055 macros to declare and implement thin (optionally static) functions
14056 that provide type-safety and avoid function pointer casting for the
14057 type-specific callbacks.
14061 * Added Kerberos Cipher Suites to be used with TLS, as written in
14063 *Veers Staats <staatsvr@asc.hpc.mil>,
14064 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte*
14066 * Reformat the FAQ so the different questions and answers can be divided
14067 in sections depending on the subject.
14071 * Have the zlib compression code load ZLIB.DLL dynamically under
14076 * New function BN_mod_sqrt for computing square roots modulo a prime
14077 (using the probabilistic Tonelli-Shanks algorithm unless
14078 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
14079 be handled deterministically).
14081 *Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller*
14083 * Make BN_mod_inverse faster by explicitly handling small quotients
14084 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
14085 512 bits], about 30% for larger ones [1024 or 2048 bits].)
14089 * New function BN_kronecker.
14093 * Fix BN_gcd so that it works on negative inputs; the result is
14094 positive unless both parameters are zero.
14095 Previously something reasonably close to an infinite loop was
14096 possible because numbers could be growing instead of shrinking
14097 in the implementation of Euclid's algorithm.
14101 * Fix BN_is_word() and BN_is_one() macros to take into account the
14102 sign of the number in question.
14104 Fix BN_is_word(a,w) to work correctly for w == 0.
14106 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
14107 because its test if the absolute value of 'a' equals 'w'.
14108 Note that BN_abs_is_word does *not* handle w == 0 reliably;
14109 it exists mostly for use in the implementations of BN_is_zero(),
14110 BN_is_one(), and BN_is_word().
14114 * New function BN_swap.
14118 * Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
14119 the exponentiation functions are more likely to produce reasonable
14120 results on negative inputs.
14124 * Change BN_mod_mul so that the result is always non-negative.
14125 Previously, it could be negative if one of the factors was negative;
14126 I don't think anyone really wanted that behaviour.
14130 * Move `BN_mod_...` functions into new file `crypto/bn/bn_mod.c`
14131 (except for exponentiation, which stays in `crypto/bn/bn_exp.c`,
14132 and `BN_mod_mul_reciprocal`, which stays in `crypto/bn/bn_recp.c`)
14133 and add new functions:
14142 BN_mod_lshift1_quick
14144 BN_mod_lshift_quick
14146 These functions always generate non-negative results.
14148 `BN_nnmod` otherwise is `like BN_mod` (if `BN_mod` computes a remainder `r`
14149 such that `|m| < r < 0`, `BN_nnmod` will output `rem + |m|` instead).
14151 `BN_mod_XXX_quick(r, a, [b,] m)` generates the same result as
14152 `BN_mod_XXX(r, a, [b,] m, ctx)`, but requires that `a` [and `b`]
14153 be reduced modulo `m`.
14155 *Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller*
14158 The following entry accidentally appeared in the CHANGES file
14159 distributed with OpenSSL 0.9.7. The modifications described in
14160 it do *not* apply to OpenSSL 0.9.7.
14162 * Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
14163 was actually never needed) and in BN_mul(). The removal in BN_mul()
14164 required a small change in bn_mul_part_recursive() and the addition
14165 of the functions bn_cmp_part_words(), bn_sub_part_words() and
14166 bn_add_part_words(), which do the same thing as bn_cmp_words(),
14167 bn_sub_words() and bn_add_words() except they take arrays with
14173 * In 'openssl passwd', verify passwords read from the terminal
14174 unless the '-salt' option is used (which usually means that
14175 verification would just waste user's time since the resulting
14176 hash is going to be compared with some given password hash)
14177 or the new '-noverify' option is used.
14179 This is an incompatible change, but it does not affect
14180 non-interactive use of 'openssl passwd' (passwords on the command
14181 line, '-stdin' option, '-in ...' option) and thus should not
14182 cause any problems.
14186 * Remove all references to RSAref, since there's no more need for it.
14190 * Make DSO load along a path given through an environment variable
14191 (SHLIB_PATH) with shl_load().
14195 * Constify the ENGINE code as a result of BIGNUM constification.
14196 Also constify the RSA code and most things related to it. In a
14197 few places, most notable in the depth of the ASN.1 code, ugly
14198 casts back to non-const were required (to be solved at a later
14203 * Make it so the openssl application has all engines loaded by default.
14207 * Constify the BIGNUM routines a little more.
14211 * Add the following functions:
14213 ENGINE_load_cswift()
14215 ENGINE_load_atalla()
14216 ENGINE_load_nuron()
14217 ENGINE_load_builtin_engines()
14219 That way, an application can itself choose if external engines that
14220 are built-in in OpenSSL shall ever be used or not. The benefit is
14221 that applications won't have to be linked with libdl or other dso
14222 libraries unless it's really needed.
14224 Changed 'openssl engine' to load all engines on demand.
14225 Changed the engine header files to avoid the duplication of some
14226 declarations (they differed!).
14230 * 'openssl engine' can now list capabilities.
14234 * Better error reporting in 'openssl engine'.
14238 * Never call load_dh_param(NULL) in s_server.
14242 * Add engine application. It can currently list engines by name and
14243 identity, and test if they are actually available.
14247 * Improve RPM specification file by forcing symbolic linking and making
14248 sure the installed documentation is also owned by root.root.
14250 *Damien Miller <djm@mindrot.org>*
14252 * Give the OpenSSL applications more possibilities to make use of
14253 keys (public as well as private) handled by engines.
14257 * Add OCSP code that comes from CertCo.
14261 * Add VMS support for the Rijndael code.
14265 * Added untested support for Nuron crypto accelerator.
14269 * Add support for external cryptographic devices. This code was
14270 previously distributed separately as the "engine" branch.
14272 *Geoff Thorpe, Richard Levitte*
14274 * Rework the filename-translation in the DSO code. It is now possible to
14275 have far greater control over how a "name" is turned into a filename
14276 depending on the operating environment and any oddities about the
14277 different shared library filenames on each system.
14281 * Support threads on FreeBSD-elf in Configure.
14285 * Fix for SHA1 assembly problem with MASM: it produces
14286 warnings about corrupt line number information when assembling
14287 with debugging information. This is caused by the overlapping
14290 *Bernd Matthes <mainbug@celocom.de>, Steve Henson*
14293 NCONF_get_number() has no error checking at all. As a replacement,
14294 NCONF_get_number_e() is defined (`_e` for "error checking") and is
14295 promoted strongly. The old NCONF_get_number is kept around for
14296 binary backward compatibility.
14297 Make it possible for methods to load from something other than a BIO,
14298 by providing a function pointer that is given a name instead of a BIO.
14299 For example, this could be used to load configuration data from an
14304 * Fix for non blocking accept BIOs. Added new I/O special reason
14305 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
14306 with non blocking I/O was not possible because no retry code was
14307 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
14312 * Added the beginnings of Rijndael support.
14316 * Fix for bug in DirectoryString mask setting. Add support for
14317 X509_NAME_print_ex() in 'req' and X509_print_ex() function
14318 to allow certificate printing to more controllable, additional
14319 'certopt' option to 'x509' to allow new printing options to be
14324 * Clean old EAY MD5 hack from e_os.h.
14328 ### Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
14330 * Fix null-pointer assignment in do_change_cipher_spec() revealed
14331 by using the Codenomicon TLS Test Tool ([CVE-2004-0079])
14333 *Joe Orton, Steve Henson*
14335 ### Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
14337 * Fix additional bug revealed by the NISCC test suite:
14339 Stop bug triggering large recursion when presented with
14340 certain ASN.1 tags ([CVE-2003-0851])
14344 ### Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
14346 * Fix various bugs revealed by running the NISCC test suite:
14348 Stop out of bounds reads in the ASN1 code when presented with
14349 invalid tags (CVE-2003-0543 and CVE-2003-0544).
14351 If verify callback ignores invalid public key errors don't try to check
14352 certificate signature with the NULL public key.
14356 * In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
14357 if the server requested one: as stated in TLS 1.0 and SSL 3.0
14362 * In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
14363 extra data after the compression methods not only for TLS 1.0
14364 but also for SSL 3.0 (as required by the specification).
14366 *Bodo Moeller; problem pointed out by Matthias Loepfe*
14368 * Change X509_certificate_type() to mark the key as exported/exportable
14369 when it's 512 *bits* long, not 512 bytes.
14373 ### Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
14375 * Countermeasure against the Klima-Pokorny-Rosa extension of
14376 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
14377 a protocol version number mismatch like a decryption error
14378 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
14382 * Turn on RSA blinding by default in the default implementation
14383 to avoid a timing attack. Applications that don't want it can call
14384 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
14385 They would be ill-advised to do so in most cases.
14387 *Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller*
14389 * Change RSA blinding code so that it works when the PRNG is not
14390 seeded (in this case, the secret RSA exponent is abused as
14391 an unpredictable seed -- if it is not unpredictable, there
14392 is no point in blinding anyway). Make RSA blinding thread-safe
14393 by remembering the creator's thread ID in rsa->blinding and
14394 having all other threads use local one-time blinding factors
14395 (this requires more computation than sharing rsa->blinding, but
14396 avoids excessive locking; and if an RSA object is not shared
14397 between threads, blinding will still be very fast).
14401 ### Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
14403 * In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
14404 via timing by performing a MAC computation even if incorrect
14405 block cipher padding has been found. This is a countermeasure
14406 against active attacks where the attacker has to distinguish
14407 between bad padding and a MAC verification error. ([CVE-2003-0078])
14409 *Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
14410 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
14411 Martin Vuagnoux (EPFL, Ilion)*
14413 ### Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
14415 * New function OPENSSL_cleanse(), which is used to cleanse a section of
14416 memory from its contents. This is done with a counter that will
14417 place alternating values in each byte. This can be used to solve
14418 two issues: 1) the removal of calls to memset() by highly optimizing
14419 compilers, and 2) cleansing with other values than 0, since those can
14420 be read through on certain media, for example a swap space on disk.
14424 * Bugfix: client side session caching did not work with external caching,
14425 because the session->cipher setting was not restored when reloading
14426 from the external cache. This problem was masked, when
14427 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
14428 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
14432 * Fix client_certificate (ssl/s2_clnt.c): The permissible total
14433 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
14435 *Zeev Lieber <zeev-l@yahoo.com>*
14437 * Undo an undocumented change introduced in 0.9.6e which caused
14438 repeated calls to OpenSSL_add_all_ciphers() and
14439 OpenSSL_add_all_digests() to be ignored, even after calling
14444 * Change the default configuration reader to deal with last line not
14445 being properly terminated.
14449 * Change X509_NAME_cmp() so it applies the special rules on handling
14450 DN values that are of type PrintableString, as well as RDNs of type
14451 emailAddress where the value has the type ia5String.
14453 *stefank@valicert.com via Richard Levitte*
14455 * Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
14456 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
14457 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
14458 the bitwise-OR of the two for use by the majority of applications
14459 wanting this behaviour, and update the docs. The documented
14460 behaviour and actual behaviour were inconsistent and had been
14461 changing anyway, so this is more a bug-fix than a behavioural
14464 *Geoff Thorpe, diagnosed by Nadav Har'El*
14466 * Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
14467 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
14471 * Fix initialization code race conditions in
14472 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
14473 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
14474 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
14475 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
14476 ssl2_get_cipher_by_char(),
14477 ssl3_get_cipher_by_char().
14479 *Patrick McCormick <patrick@tellme.com>, Bodo Moeller*
14481 * Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
14482 the cached sessions are flushed, as the remove_cb() might use ex_data
14483 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
14484 (see [openssl.org #212]).
14486 *Geoff Thorpe, Lutz Jaenicke*
14488 * Fix typo in OBJ_txt2obj which incorrectly passed the content
14489 length, instead of the encoding length to d2i_ASN1_OBJECT.
14493 ### Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
14495 * [In 0.9.6g-engine release:]
14496 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use `_stdcall`).
14498 *Lynn Gazis <lgazis@rainbow.com>*
14500 ### Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
14502 * Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
14503 and get fix the header length calculation.
14504 *Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
14505 Alon Kantor <alonk@checkpoint.com> (and others), Steve Henson*
14507 * Use proper error handling instead of 'assertions' in buffer
14508 overflow checks added in 0.9.6e. This prevents DoS (the
14509 assertions could call abort()).
14511 *Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller*
14513 ### Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
14515 * Add various sanity checks to asn1_get_length() to reject
14516 the ASN1 length bytes if they exceed sizeof(long), will appear
14517 negative or the content length exceeds the length of the
14520 *Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>*
14522 * Fix cipher selection routines: ciphers without encryption had no flags
14523 for the cipher strength set and where therefore not handled correctly
14524 by the selection routines (PR #130).
14528 * Fix EVP_dsa_sha macro.
14533 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
14534 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
14535 that was added in OpenSSL 0.9.6d.
14537 As the countermeasure turned out to be incompatible with some
14538 broken SSL implementations, the new option is part of SSL_OP_ALL.
14539 SSL_OP_ALL is usually employed when compatibility with weird SSL
14540 implementations is desired (e.g. '-bugs' option to 's_client' and
14541 's_server'), so the new option is automatically set in many
14546 * Changes in security patch:
14548 Changes marked "(CHATS)" were sponsored by the Defense Advanced
14549 Research Projects Agency (DARPA) and Air Force Research Laboratory,
14550 Air Force Materiel Command, USAF, under agreement number
14553 * Add various sanity checks to asn1_get_length() to reject
14554 the ASN1 length bytes if they exceed sizeof(long), will appear
14555 negative or the content length exceeds the length of the
14556 supplied buffer. ([CVE-2002-0659])
14558 *Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>*
14560 * Assertions for various potential buffer overflows, not known to
14561 happen in practice.
14563 *Ben Laurie (CHATS)*
14565 * Various temporary buffers to hold ASCII versions of integers were
14566 too small for 64 bit platforms. ([CVE-2002-0655])
14567 *Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>*
14569 * Remote buffer overflow in SSL3 protocol - an attacker could
14570 supply an oversized session ID to a client. ([CVE-2002-0656])
14572 *Ben Laurie (CHATS)*
14574 * Remote buffer overflow in SSL2 protocol - an attacker could
14575 supply an oversized client master key. ([CVE-2002-0656])
14577 *Ben Laurie (CHATS)*
14579 ### Changes between 0.9.6c and 0.9.6d [9 May 2002]
14581 * Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
14582 encoded as NULL) with id-dsa-with-sha1.
14584 *Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller*
14586 * Check various `X509_...()` return values in `apps/req.c`.
14588 *Nils Larsch <nla@trustcenter.de>*
14590 * Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
14591 an end-of-file condition would erroneously be flagged, when the CRLF
14592 was just at the end of a processed block. The bug was discovered when
14593 processing data through a buffering memory BIO handing the data to a
14594 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
14595 <ptsekov@syntrex.com> and Nedelcho Stanev.
14599 * Implement a countermeasure against a vulnerability recently found
14600 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
14601 before application data chunks to avoid the use of known IVs
14602 with data potentially chosen by the attacker.
14606 * Fix length checks in ssl3_get_client_hello().
14610 * TLS/SSL library bugfix: use s->s3->in_read_app_data differently
14611 to prevent ssl3_read_internal() from incorrectly assuming that
14612 ssl3_read_bytes() found application data while handshake
14613 processing was enabled when in fact s->s3->in_read_app_data was
14614 merely automatically cleared during the initial handshake.
14616 *Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>*
14618 * Fix object definitions for Private and Enterprise: they were not
14619 recognized in their shortname (=lowercase) representation. Extend
14620 obj_dat.pl to issue an error when using undefined keywords instead
14621 of silently ignoring the problem (Svenning Sorensen
14622 <sss@sss.dnsalias.net>).
14626 * Fix DH_generate_parameters() so that it works for 'non-standard'
14627 generators, i.e. generators other than 2 and 5. (Previously, the
14628 code did not properly initialise the 'add' and 'rem' values to
14629 BN_generate_prime().)
14631 In the new general case, we do not insist that 'generator' is
14632 actually a primitive root: This requirement is rather pointless;
14633 a generator of the order-q subgroup is just as good, if not
14638 * Map new X509 verification errors to alerts. Discovered and submitted by
14639 Tom Wu <tom@arcot.com>.
14643 * Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
14644 returning non-zero before the data has been completely received
14645 when using non-blocking I/O.
14647 *Bodo Moeller; problem pointed out by John Hughes*
14649 * Some of the ciphers missed the strength entry (SSL_LOW etc).
14651 *Ben Laurie, Lutz Jaenicke*
14653 * Fix bug in SSL_clear(): bad sessions were not removed (found by
14654 Yoram Zahavi <YoramZ@gilian.com>).
14658 * Add information about CygWin 1.3 and on, and preserve proper
14659 configuration for the versions before that.
14661 *Corinna Vinschen <vinschen@redhat.com> and Richard Levitte*
14663 * Make removal from session cache (SSL_CTX_remove_session()) more robust:
14664 check whether we deal with a copy of a session and do not delete from
14665 the cache in this case. Problem reported by "Izhar Shoshani Levi"
14666 <izhar@checkpoint.com>.
14670 * Do not store session data into the internal session cache, if it
14671 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
14672 flag is set). Proposed by Aslam <aslam@funk.com>.
14676 * Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
14681 * [In 0.9.6d-engine release:]
14682 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
14684 *Toomas Kiisk <vix@cyber.ee> via Richard Levitte*
14686 * Add the configuration target linux-s390x.
14688 *Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte*
14690 * The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
14691 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
14692 variable as an indication that a ClientHello message has been
14693 received. As the flag value will be lost between multiple
14694 invocations of ssl3_accept when using non-blocking I/O, the
14695 function may not be aware that a handshake has actually taken
14696 place, thus preventing a new session from being added to the
14699 To avoid this problem, we now set s->new_session to 2 instead of
14700 using a local variable.
14702 *Lutz Jaenicke, Bodo Moeller*
14704 * Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
14705 if the SSL_R_LENGTH_MISMATCH error is detected.
14707 *Geoff Thorpe, Bodo Moeller*
14709 * New 'shared_ldflag' column in Configure platform table.
14713 * Fix EVP_CIPHER_mode macro.
14715 *"Dan S. Camper" <dan@bti.net>*
14717 * Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
14718 type, we must throw them away by setting rr->length to 0.
14720 *D P Chang <dpc@qualys.com>*
14722 ### Changes between 0.9.6b and 0.9.6c [21 dec 2001]
14724 * Fix BN_rand_range bug pointed out by Dominikus Scherkl
14725 <Dominikus.Scherkl@biodata.com>. (The previous implementation
14726 worked incorrectly for those cases where range = `10..._2` and
14727 `3*range` is two bits longer than range.)
14731 * Only add signing time to PKCS7 structures if it is not already
14736 * Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
14737 OBJ_ld_ce should be OBJ_id_ce.
14738 Also some ip-pda OIDs in crypto/objects/objects.txt were
14739 incorrect (cf. RFC 3039).
14741 *Matt Cooper, Frederic Giudicelli, Bodo Moeller*
14743 * Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
14744 returns early because it has nothing to do.
14746 *Andy Schneider <andy.schneider@bjss.co.uk>*
14748 * [In 0.9.6c-engine release:]
14749 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
14751 *Andy Schneider <andy.schneider@bjss.co.uk>*
14753 * [In 0.9.6c-engine release:]
14754 Add support for Cryptographic Appliance's keyserver technology.
14755 (Use engine 'keyclient')
14757 *Cryptographic Appliances and Geoff Thorpe*
14759 * Add a configuration entry for OS/390 Unix. The C compiler 'c89'
14760 is called via tools/c89.sh because arguments have to be
14761 rearranged (all '-L' options must appear before the first object
14764 *Richard Shapiro <rshapiro@abinitio.com>*
14766 * [In 0.9.6c-engine release:]
14767 Add support for Broadcom crypto accelerator cards, backported
14770 *Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox*
14772 * [In 0.9.6c-engine release:]
14773 Add support for SureWare crypto accelerator cards from
14774 Baltimore Technologies. (Use engine 'sureware')
14776 *Baltimore Technologies and Mark Cox*
14778 * [In 0.9.6c-engine release:]
14779 Add support for crypto accelerator cards from Accelerated
14780 Encryption Processing, www.aep.ie. (Use engine 'aep')
14782 *AEP Inc. and Mark Cox*
14784 * Add a configuration entry for gcc on UnixWare.
14786 *Gary Benson <gbenson@redhat.com>*
14788 * Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
14789 messages are stored in a single piece (fixed-length part and
14790 variable-length part combined) and fix various bugs found on the way.
14794 * Disable caching in BIO_gethostbyname(), directly use gethostbyname()
14795 instead. BIO_gethostbyname() does not know what timeouts are
14796 appropriate, so entries would stay in cache even when they have
14798 *Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>*
14800 * Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
14801 faced with a pathologically small ClientHello fragment that does
14802 not contain client_version: Instead of aborting with an error,
14803 simply choose the highest available protocol version (i.e.,
14804 TLS 1.0 unless it is disabled). In practice, ClientHello
14805 messages are never sent like this, but this change gives us
14806 strictly correct behaviour at least for TLS.
14810 * Fix SSL handshake functions and SSL_clear() such that SSL_clear()
14811 never resets s->method to s->ctx->method when called from within
14812 one of the SSL handshake functions.
14814 *Bodo Moeller; problem pointed out by Niko Baric*
14816 * In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
14817 (sent using the client's version number) if client_version is
14818 smaller than the protocol version in use. Also change
14819 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
14820 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
14821 the client will at least see that alert.
14825 * Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
14830 * Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
14831 client receives HelloRequest while in a handshake.
14833 *Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>*
14835 * Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
14836 should end in 'break', not 'goto end' which circumvents various
14837 cleanups done in state SSL_ST_OK. But session related stuff
14838 must be disabled for SSL_ST_OK in the case that we just sent a
14841 Also avoid some overhead by not calling ssl_init_wbio_buffer()
14842 before just sending a HelloRequest.
14844 *Bodo Moeller, Eric Rescorla <ekr@rtfm.com>*
14846 * Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
14847 reveal whether illegal block cipher padding was found or a MAC
14848 verification error occurred. (Neither SSLerr() codes nor alerts
14849 are directly visible to potential attackers, but the information
14850 may leak via logfiles.)
14852 Similar changes are not required for the SSL 2.0 implementation
14853 because the number of padding bytes is sent in clear for SSL 2.0,
14854 and the extra bytes are just ignored. However ssl/s2_pkt.c
14855 failed to verify that the purported number of padding bytes is in
14860 * Add OpenUNIX-8 support including shared libraries
14861 (Boyd Lynn Gerber <gerberb@zenez.com>).
14865 * Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
14866 'wristwatch attack' using huge encoding parameters (cf.
14867 James H. Manger's CRYPTO 2001 paper). Note that the
14868 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
14869 encoding parameters and hence was not vulnerable.
14873 * BN_sqr() bug fix.
14875 *Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>*
14877 * Rabin-Miller test analyses assume uniformly distributed witnesses,
14878 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
14879 followed by modular reduction.
14881 *Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>*
14883 * Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
14884 equivalent based on BN_pseudo_rand() instead of BN_rand().
14888 * s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
14889 This function was broken, as the check for a new client hello message
14890 to handle SGC did not allow these large messages.
14891 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
14895 * Add alert descriptions for TLSv1 to `SSL_alert_desc_string[_long]()`.
14899 * Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
14900 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
14904 * Rework the configuration and shared library support for Tru64 Unix.
14905 The configuration part makes use of modern compiler features and
14906 still retains old compiler behavior for those that run older versions
14907 of the OS. The shared library support part includes a variant that
14908 uses the RPATH feature, and is available through the special
14909 configuration target "alpha-cc-rpath", which will never be selected
14912 *Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte*
14914 * In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
14915 with the same message size as in ssl3_get_certificate_request().
14916 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
14917 messages might inadvertently be reject as too long.
14919 *Petr Lampa <lampa@fee.vutbr.cz>*
14921 * Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
14925 * Modified SSL library such that the verify_callback that has been set
14926 specifically for an SSL object with SSL_set_verify() is actually being
14927 used. Before the change, a verify_callback set with this function was
14928 ignored and the verify_callback() set in the SSL_CTX at the time of
14929 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
14930 to allow the necessary settings.
14934 * Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
14935 explicitly to NULL, as at least on Solaris 8 this seems not always to be
14936 done automatically (in contradiction to the requirements of the C
14937 standard). This made problems when used from OpenSSH.
14941 * In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
14942 dh->length and always used
14944 BN_rand_range(priv_key, dh->p).
14946 BN_rand_range() is not necessary for Diffie-Hellman, and this
14947 specific range makes Diffie-Hellman unnecessarily inefficient if
14948 dh->length (recommended exponent length) is much smaller than the
14949 length of dh->p. We could use BN_rand_range() if the order of
14950 the subgroup was stored in the DH structure, but we only have
14955 BN_rand(priv_key, l, ...)
14957 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
14964 RSA_eay_public_encrypt
14965 RSA_eay_private_decrypt
14966 RSA_eay_private_encrypt (signing)
14967 RSA_eay_public_decrypt (signature verification)
14969 (default implementations for RSA_public_encrypt,
14970 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
14971 always reject numbers >= n.
14975 * In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
14976 to synchronize access to 'locking_thread'. This is necessary on
14977 systems where access to 'locking_thread' (an 'unsigned long'
14978 variable) is not atomic.
14982 * In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
14983 *before* setting the 'crypto_lock_rand' flag. The previous code had
14984 a race condition if 0 is a valid thread ID.
14986 *Travis Vitek <vitek@roguewave.com>*
14988 * Add support for shared libraries under Irix.
14990 *Albert Chin-A-Young <china@thewrittenword.com>*
14992 * Add configuration option to build on Linux on both big-endian and
14993 little-endian MIPS.
14995 *Ralf Baechle <ralf@uni-koblenz.de>*
14997 * Add the possibility to create shared libraries on HP-UX.
15001 ### Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
15003 * Change ssleay_rand_bytes (crypto/rand/md_rand.c)
15004 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
15005 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
15006 PRNG state recovery was possible based on the output of
15007 one PRNG request appropriately sized to gain knowledge on
15008 'md' followed by enough consecutive 1-byte PRNG requests
15009 to traverse all of 'state'.
15011 1. When updating 'md_local' (the current thread's copy of 'md')
15012 during PRNG output generation, hash all of the previous
15013 'md_local' value, not just the half used for PRNG output.
15015 2. Make the number of bytes from 'state' included into the hash
15016 independent from the number of PRNG bytes requested.
15018 The first measure alone would be sufficient to avoid
15019 Markku-Juhani's attack. (Actually it had never occurred
15020 to me that the half of 'md_local' used for chaining was the
15021 half from which PRNG output bytes were taken -- I had always
15022 assumed that the secret half would be used.) The second
15023 measure makes sure that additional data from 'state' is never
15024 mixed into 'md_local' in small portions; this heuristically
15025 further strengthens the PRNG.
15029 * Fix crypto/bn/asm/mips3.s.
15033 * When only the key is given to "enc", the IV is undefined. Print out
15034 an error message in this case.
15038 * Handle special case when X509_NAME is empty in X509 printing routines.
15042 * In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
15043 positive and less than q.
15047 * Don't change `*pointer` in CRYPTO_add_lock() is add_lock_callback is
15048 used: it isn't thread safe and the add_lock_callback should handle
15051 *Paul Rose <Paul.Rose@bridge.com>*
15053 * Verify that incoming data obeys the block size in
15054 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
15060 *Ulf Möller, Bodo Möller*
15062 * The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
15063 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
15064 when fixing the server behaviour for backwards-compatible 'client
15065 hello' messages. (Note that the attack is impractical against
15066 SSL 3.0 and TLS 1.0 anyway because length and version checking
15067 means that the probability of guessing a valid ciphertext is
15068 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
15071 Before 0.9.5, the countermeasure (hide the error by generating a
15072 random 'decryption result') did not work properly because
15073 ERR_clear_error() was missing, meaning that SSL_get_error() would
15074 detect the supposedly ignored error.
15076 Both problems are now fixed.
15080 * In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
15081 (previously it was 1024).
15085 * Fix for compatibility mode trust settings: ignore trust settings
15086 unless some valid trust or reject settings are present.
15090 * Fix for blowfish EVP: its a variable length cipher.
15094 * Fix various bugs related to DSA S/MIME verification. Handle missing
15095 parameters in DSA public key structures and return an error in the
15096 DSA routines if parameters are absent.
15100 * In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
15101 in the current directory if neither $RANDFILE nor $HOME was set.
15102 RAND_file_name() in 0.9.6a returned NULL in this case. This has
15103 caused some confusion to Windows users who haven't defined $HOME.
15104 Thus RAND_file_name() is changed again: e_os.h can define a
15105 DEFAULT_HOME, which will be used if $HOME is not set.
15106 For Windows, we use "C:"; on other platforms, we still require
15107 environment variables.
15109 * Move 'if (!initialized) RAND_poll()' into regions protected by
15110 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
15111 having multiple threads call RAND_poll() concurrently.
15115 * In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
15116 combination of a flag and a thread ID variable.
15117 Otherwise while one thread is in ssleay_rand_bytes (which sets the
15118 flag), *other* threads can enter ssleay_add_bytes without obeying
15119 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
15120 that they do not hold after the first thread unsets add_do_not_lock).
15124 * Change bctest again: '-x' expressions are not available in all
15125 versions of 'test'.
15129 ### Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
15131 * Fix a couple of memory leaks in PKCS7_dataDecode()
15133 *Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>*
15135 * Change Configure and Makefiles to provide EXE_EXT, which will contain
15136 the default extension for executables, if any. Also, make the perl
15137 scripts that use symlink() to test if it really exists and use "cp"
15138 if it doesn't. All this made OpenSSL compilable and installable in
15143 * Fix for asn1_GetSequence() for indefinite length constructed data.
15144 If SEQUENCE is length is indefinite just set c->slen to the total
15145 amount of data available.
15147 *Steve Henson, reported by shige@FreeBSD.org*
15149 *This change does not apply to 0.9.7.*
15151 * Change bctest to avoid here-documents inside command substitution
15152 (workaround for FreeBSD /bin/sh bug).
15153 For compatibility with Ultrix, avoid shell functions (introduced
15154 in the bctest version that searches along $PATH).
15158 * Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
15159 with des_encrypt() defined on some operating systems, like Solaris
15164 * Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
15165 On the Importance of Eliminating Errors in Cryptographic
15166 Computations, J. Cryptology 14 (2001) 2, 101-119,
15167 <http://theory.stanford.edu/~dabo/papers/faults.ps.gz>).
15171 * MIPS assembler BIGNUM division bug fix.
15175 * Disabled incorrect Alpha assembler code.
15179 * Fix PKCS#7 decode routines so they correctly update the length
15180 after reading an EOC for the EXPLICIT tag.
15184 *This change does not apply to 0.9.7.*
15186 * Fix bug in PKCS#12 key generation routines. This was triggered
15187 if a 3DES key was generated with a 0 initial byte. Include
15188 PKCS12_BROKEN_KEYGEN compilation option to retain the old
15189 (but broken) behaviour.
15193 * Enhance bctest to search for a working bc along $PATH and print
15196 *Tim Rice <tim@multitalents.net> via Richard Levitte*
15198 * Fix memory leaks in err.c: free err_data string if necessary;
15199 don't write to the wrong index in ERR_set_error_data.
15203 * Implement ssl23_peek (analogous to ssl23_read), which previously
15208 * Replace rdtsc with `_emit` statements for VC++ version 5.
15210 *Jeremy Cooper <jeremy@baymoo.org>*
15212 * Make it possible to reuse SSLv2 sessions.
15216 * In copy_email() check for >= 0 as a return value for
15217 X509_NAME_get_index_by_NID() since 0 is a valid index.
15219 *Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>*
15221 * Avoid coredump with unsupported or invalid public keys by checking if
15222 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
15223 PKCS7_verify() fails with non detached data.
15227 * Don't use getenv in library functions when run as setuid/setgid.
15228 New function OPENSSL_issetugid().
15232 * Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
15233 due to incorrect handling of multi-threading:
15235 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
15237 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
15239 3. Count how many times MemCheck_off() has been called so that
15240 nested use can be treated correctly. This also avoids
15241 inband-signalling in the previous code (which relied on the
15242 assumption that thread ID 0 is impossible).
15246 * Add "-rand" option also to s_client and s_server.
15250 * Fix CPU detection on Irix 6.x.
15251 *Kurt Hockenbury <khockenb@stevens-tech.edu> and
15252 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>*
15254 * Fix X509_NAME bug which produced incorrect encoding if X509_NAME
15259 *This change does not apply to 0.9.7.*
15261 * Use the cached encoding of an X509_NAME structure rather than
15262 copying it. This is apparently the reason for the libsafe "errors"
15263 but the code is actually correct.
15267 * Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
15268 Bleichenbacher's DSA attack.
15269 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
15270 to be set and top=0 forces the highest bit to be set; top=-1 is new
15271 and leaves the highest bit random.
15273 *Ulf Moeller, Bodo Moeller*
15275 * In the `NCONF_...`-based implementations for `CONF_...` queries
15276 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
15277 a temporary CONF structure with the data component set to NULL
15278 (which gives segmentation faults in lh_retrieve).
15279 Instead, use NULL for the CONF pointer in CONF_get_string and
15280 CONF_get_number (which may use environment variables) and directly
15281 return NULL from CONF_get_section.
15285 * Fix potential buffer overrun for EBCDIC.
15289 * Tolerate nonRepudiation as being valid for S/MIME signing and certSign
15290 keyUsage if basicConstraints absent for a CA.
15294 * Make SMIME_write_PKCS7() write mail header values with a format that
15295 is more generally accepted (no spaces before the semicolon), since
15296 some programs can't parse those values properly otherwise. Also make
15297 sure BIO's that break lines after each write do not create invalid
15302 * Make the CRL encoding routines work with empty SEQUENCE OF. The
15303 macros previously used would not encode an empty SEQUENCE OF
15304 and break the signature.
15308 *This change does not apply to 0.9.7.*
15310 * Zero the premaster secret after deriving the master secret in
15315 * Add some EVP_add_digest_alias registrations (as found in
15316 OpenSSL_add_all_digests()) to SSL_library_init()
15317 aka OpenSSL_add_ssl_algorithms(). This provides improved
15318 compatibility with peers using X.509 certificates
15319 with unconventional AlgorithmIdentifier OIDs.
15323 * Fix for Irix with NO_ASM.
15325 *"Bruce W. Forsberg" <bruce.forsberg@baesystems.com>*
15327 * ./config script fixes.
15329 *Ulf Moeller, Richard Levitte*
15331 * Fix 'openssl passwd -1'.
15335 * Change PKCS12_key_gen_asc() so it can cope with non null
15336 terminated strings whose length is passed in the passlen
15337 parameter, for example from PEM callbacks. This was done
15338 by adding an extra length parameter to asc2uni().
15340 *Steve Henson, reported by <oddissey@samsung.co.kr>*
15342 * Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
15343 call failed, free the DSA structure.
15347 * Fix to uni2asc() to cope with zero length Unicode strings.
15348 These are present in some PKCS#12 files.
15352 * Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
15353 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
15354 when writing a 32767 byte record.
15356 *Bodo Moeller; problem reported by Eric Day <eday@concentric.net>*
15358 * In `RSA_eay_public_{en,ed}crypt` and RSA_eay_mod_exp (rsa_eay.c),
15359 obtain lock CRYPTO_LOCK_RSA before setting `rsa->_method_mod_{n,p,q}`.
15361 (RSA objects have a reference count access to which is protected
15362 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
15363 so they are meant to be shared between threads.)
15364 *Bodo Moeller, Geoff Thorpe; original patch submitted by
15365 "Reddie, Steven" <Steven.Reddie@ca.com>*
15367 * Fix a deadlock in CRYPTO_mem_leaks().
15371 * Use better test patterns in bntest.
15375 * rand_win.c fix for Borland C.
15379 * BN_rshift bugfix for n == 0.
15383 * Add a 'bctest' script that checks for some known 'bc' bugs
15384 so that 'make test' does not abort just because 'bc' is broken.
15388 * Store verify_result within SSL_SESSION also for client side to
15389 avoid potential security hole. (Re-used sessions on the client side
15390 always resulted in verify_result==X509_V_OK, not using the original
15391 result of the server certificate verification.)
15395 * Fix ssl3_pending: If the record in s->s3->rrec is not of type
15396 SSL3_RT_APPLICATION_DATA, return 0.
15397 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
15402 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
15403 releases, have been re-implemented by renaming the previous
15404 implementations of ssl2_read and ssl3_read to ssl2_read_internal
15405 and ssl3_read_internal, respectively, and adding 'peek' parameters
15406 to them. The new ssl[23]_{read,peek} functions are calls to
15407 ssl[23]_read_internal with the 'peek' flag set appropriately.
15408 A 'peek' parameter has also been added to ssl3_read_bytes, which
15409 does the actual work for ssl3_read_internal.
15413 * Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
15414 the method-specific "init()" handler. Also clean up ex_data after
15415 calling the method-specific "finish()" handler. Previously, this was
15416 happening the other way round.
15420 * Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
15421 The previous value, 12, was not always sufficient for BN_mod_exp().
15425 * Make sure that shared libraries get the internal name engine with
15426 the full version number and not just 0. This should mark the
15427 shared libraries as not backward compatible. Of course, this should
15428 be changed again when we can guarantee backward binary compatibility.
15432 * Fix typo in get_cert_by_subject() in by_dir.c
15434 *Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>*
15436 * Rework the system to generate shared libraries:
15438 - Make note of the expected extension for the shared libraries and
15439 if there is a need for symbolic links from for example libcrypto.so.0
15440 to libcrypto.so.0.9.7. There is extended info in Configure for
15443 - Make as few rebuilds of the shared libraries as possible.
15445 - Still avoid linking the OpenSSL programs with the shared libraries.
15447 - When installing, install the shared libraries separately from the
15452 * Fix SSL_CTX_set_read_ahead macro to actually use its argument.
15454 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
15455 and not in SSL_clear because the latter is also used by the
15456 accept/connect functions; previously, the settings made by
15457 SSL_set_read_ahead would be lost during the handshake.
15459 *Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>*
15461 * Correct util/mkdef.pl to be selective about disabled algorithms.
15462 Previously, it would create entries for disabled algorithms no
15467 * Added several new manual pages for SSL_* function.
15471 ### Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
15473 * In ssl23_get_client_hello, generate an error message when faced
15474 with an initial SSL 3.0/TLS record that is too small to contain the
15475 first two bytes of the ClientHello message, i.e. client_version.
15476 (Note that this is a pathologic case that probably has never happened
15477 in real life.) The previous approach was to use the version number
15478 from the record header as a substitute; but our protocol choice
15479 should not depend on that one because it is not authenticated
15480 by the Finished messages.
15484 * More robust randomness gathering functions for Windows.
15486 *Jeffrey Altman <jaltman@columbia.edu>*
15488 * For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
15489 not set then we don't setup the error code for issuer check errors
15490 to avoid possibly overwriting other errors which the callback does
15491 handle. If an application does set the flag then we assume it knows
15492 what it is doing and can handle the new informational codes
15497 * Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
15498 a general "ANY" type, as such it should be able to decode anything
15499 including tagged types. However it didn't check the class so it would
15500 wrongly interpret tagged types in the same way as their universal
15501 counterpart and unknown types were just rejected. Changed so that the
15502 tagged and unknown types are handled in the same way as a SEQUENCE:
15503 that is the encoding is stored intact. There is also a new type
15504 "V_ASN1_OTHER" which is used when the class is not universal, in this
15505 case we have no idea what the actual type is so we just lump them all
15510 * On VMS, stdout may very well lead to a file that is written to
15511 in a record-oriented fashion. That means that every write() will
15512 write a separate record, which will be read separately by the
15513 programs trying to read from it. This can be very confusing.
15515 The solution is to put a BIO filter in the way that will buffer
15516 text until a linefeed is reached, and then write everything a
15517 line at a time, so every record written will be an actual line,
15518 not chunks of lines and not (usually doesn't happen, but I've
15519 seen it once) several lines in one record. BIO_f_linebuffer() is
15522 Currently, it's a VMS-only method, because that's where it has
15523 been tested well enough.
15527 * Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
15528 it can return incorrect results.
15529 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
15530 but it was in 0.9.6-beta[12].)
15534 * Disable the check for content being present when verifying detached
15535 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
15536 include zero length content when signing messages.
15540 * New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
15541 BIO_ctrl (for BIO pairs).
15545 * Add DSO method for VMS.
15549 * Bug fix: Montgomery multiplication could produce results with the
15554 * Add RPM specification openssl.spec and modify it to build three
15555 packages. The default package contains applications, application
15556 documentation and run-time libraries. The devel package contains
15557 include files, static libraries and function documentation. The
15558 doc package contains the contents of the doc directory. The original
15559 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
15563 * Add a large number of documentation files for many SSL routines.
15565 *Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>*
15567 * Add a configuration entry for Sony News 4.
15569 *NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>*
15571 * Don't set the two most significant bits to one when generating a
15572 random number < q in the DSA library.
15576 * New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
15577 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
15578 the underlying transport is blocking) if a handshake took place.
15579 (The default behaviour is needed by applications such as s_client
15580 and s_server that use select() to determine when to use SSL_read;
15581 but for applications that know in advance when to expect data, it
15582 just makes things more complicated.)
15586 * Add RAND_egd_bytes(), which gives control over the number of bytes read
15591 * Add a few more EBCDIC conditionals that make `req` and `x509`
15592 work better on such systems.
15594 *Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>*
15596 * Add two demo programs for PKCS12_parse() and PKCS12_create().
15597 Update PKCS12_parse() so it copies the friendlyName and the
15598 keyid to the certificates aux info.
15602 * Fix bug in PKCS7_verify() which caused an infinite loop
15603 if there was more than one signature.
15605 *Sven Uszpelkat <su@celocom.de>*
15607 * Major change in util/mkdef.pl to include extra information
15608 about each symbol, as well as presenting variables as well
15609 as functions. This change means that there's n more need
15610 to rebuild the .num files when some algorithms are excluded.
15614 * Allow the verify time to be set by an application,
15615 rather than always using the current time.
15619 * Phase 2 verify code reorganisation. The certificate
15620 verify code now looks up an issuer certificate by a
15621 number of criteria: subject name, authority key id
15622 and key usage. It also verifies self signed certificates
15623 by the same criteria. The main comparison function is
15624 X509_check_issued() which performs these checks.
15626 Lot of changes were necessary in order to support this
15627 without completely rewriting the lookup code.
15629 Authority and subject key identifier are now cached.
15631 The LHASH 'certs' is X509_STORE has now been replaced
15632 by a STACK_OF(X509_OBJECT). This is mainly because an
15633 LHASH can't store or retrieve multiple objects with
15634 the same hash value.
15636 As a result various functions (which were all internal
15637 use only) have changed to handle the new X509_STORE
15638 structure. This will break anything that messed round
15639 with X509_STORE internally.
15641 The functions X509_STORE_add_cert() now checks for an
15642 exact match, rather than just subject name.
15644 The X509_STORE API doesn't directly support the retrieval
15645 of multiple certificates matching a given criteria, however
15646 this can be worked round by performing a lookup first
15647 (which will fill the cache with candidate certificates)
15648 and then examining the cache for matches. This is probably
15649 the best we can do without throwing out X509_LOOKUP
15650 entirely (maybe later...).
15652 The X509_VERIFY_CTX structure has been enhanced considerably.
15654 All certificate lookup operations now go via a get_issuer()
15655 callback. Although this currently uses an X509_STORE it
15656 can be replaced by custom lookups. This is a simple way
15657 to bypass the X509_STORE hackery necessary to make this
15658 work and makes it possible to use more efficient techniques
15659 in future. A very simple version which uses a simple
15660 STACK for its trusted certificate store is also provided
15661 using X509_STORE_CTX_trusted_stack().
15663 The verify_cb() and verify() callbacks now have equivalents
15664 in the X509_STORE_CTX structure.
15666 X509_STORE_CTX also has a 'flags' field which can be used
15667 to customise the verify behaviour.
15671 * Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
15672 excludes S/MIME capabilities.
15676 * When a certificate request is read in keep a copy of the
15677 original encoding of the signed data and use it when outputting
15678 again. Signatures then use the original encoding rather than
15679 a decoded, encoded version which may cause problems if the
15680 request is improperly encoded.
15684 * For consistency with other BIO_puts implementations, call
15685 buffer_write(b, ...) directly in buffer_puts instead of calling
15688 In BIO_puts, increment b->num_write as in BIO_write.
15690 *Peter.Sylvester@EdelWeb.fr*
15692 * Fix BN_mul_word for the case where the word is 0. (We have to use
15693 BN_zero, we may not return a BIGNUM with an array consisting of
15694 words set to zero.)
15698 * Avoid calling abort() from within the library when problems are
15699 detected, except if preprocessor symbols have been defined
15700 (such as REF_CHECK, BN_DEBUG etc.).
15704 * New openssl application 'rsautl'. This utility can be
15705 used for low-level RSA operations. DER public key
15706 BIO/fp routines also added.
15710 * New Configure entry and patches for compiling on QNX 4.
15712 *Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>*
15714 * A demo state-machine implementation was sponsored by
15715 Nuron (<http://www.nuron.com/>) and is now available in
15716 demos/state_machine.
15720 * New options added to the 'dgst' utility for signature
15721 generation and verification.
15725 * Unrecognized PKCS#7 content types are now handled via a
15726 catch all ASN1_TYPE structure. This allows unsupported
15727 types to be stored as a "blob" and an application can
15728 encode and decode it manually.
15732 * Fix various signed/unsigned issues to make a_strex.c
15733 compile under VC++.
15735 *Oscar Jacobsson <oscar.jacobsson@celocom.com>*
15737 * ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
15738 length if passed a buffer. ASN1_INTEGER_to_BN failed
15739 if passed a NULL BN and its argument was negative.
15741 *Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>*
15743 * Modification to PKCS#7 encoding routines to output definite
15744 length encoding. Since currently the whole structures are in
15745 memory there's not real point in using indefinite length
15746 constructed encoding. However if OpenSSL is compiled with
15747 the flag PKCS7_INDEFINITE_ENCODING the old form is used.
15751 * Added BIO_vprintf() and BIO_vsnprintf().
15755 * Added more prefixes to parse for in the strings written
15756 through a logging bio, to cover all the levels that are available
15757 through syslog. The prefixes are now:
15759 PANIC, EMERG, EMR => LOG_EMERG
15760 ALERT, ALR => LOG_ALERT
15761 CRIT, CRI => LOG_CRIT
15762 ERROR, ERR => LOG_ERR
15763 WARNING, WARN, WAR => LOG_WARNING
15764 NOTICE, NOTE, NOT => LOG_NOTICE
15765 INFO, INF => LOG_INFO
15766 DEBUG, DBG => LOG_DEBUG
15768 and as before, if none of those prefixes are present at the
15769 beginning of the string, LOG_ERR is chosen.
15771 On Win32, the `LOG_*` levels are mapped according to this:
15773 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
15774 LOG_WARNING => EVENTLOG_WARNING_TYPE
15775 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
15779 * Made it possible to reconfigure with just the configuration
15780 argument "reconf" or "reconfigure". The command line arguments
15781 are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
15782 and are retrieved from there when reconfiguring.
15788 *Assar Westerlund <assar@sics.se>, Richard Levitte*
15790 * Add the arguments -CAfile and -CApath to the pkcs12 utility.
15794 * The obj_dat.pl script was messing up the sorting of object
15795 names. The reason was that it compared the quoted version
15796 of strings as a result "OCSP" > "OCSP Signing" because
15797 " > SPACE. Changed script to store unquoted versions of
15798 names and add quotes on output. It was also omitting some
15799 names from the lookup table if they were given a default
15800 value (that is if SN is missing it is given the same
15801 value as LN and vice versa), these are now added on the
15802 grounds that if an object has a name we should be able to
15803 look it up. Finally added warning output when duplicate
15804 short or long names are found.
15808 * Changes needed for Tandem NSK.
15810 *Scott Uroff <scott@xypro.com>*
15812 * Fix SSL 2.0 rollback checking: Due to an off-by-one error in
15813 RSA_padding_check_SSLv23(), special padding was never detected
15814 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
15815 version rollback attacks was not effective.
15817 In s23_clnt.c, don't use special rollback-attack detection padding
15818 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
15819 client; similarly, in s23_srvr.c, don't do the rollback check if
15820 SSL 2.0 is the only protocol enabled in the server.
15824 * Make it possible to get hexdumps of unprintable data with 'openssl
15825 asn1parse'. By implication, the functions ASN1_parse_dump() and
15826 BIO_dump_indent() are added.
15830 * New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
15831 these print out strings and name structures based on various
15832 flags including RFC2253 support and proper handling of
15833 multibyte characters. Added options to the 'x509' utility
15834 to allow the various flags to be set.
15838 * Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
15839 Also change the functions X509_cmp_current_time() and
15840 X509_gmtime_adj() work with an ASN1_TIME structure,
15841 this will enable certificates using GeneralizedTime in validity
15842 dates to be checked.
15846 * Make the NEG_PUBKEY_BUG code (which tolerates invalid
15847 negative public key encodings) on by default,
15848 NO_NEG_PUBKEY_BUG can be set to disable it.
15852 * New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
15853 content octets. An i2c_ASN1_OBJECT is unnecessary because
15854 the encoding can be trivially obtained from the structure.
15858 * crypto/err.c locking bugfix: Use write locks (`CRYPTO_w_[un]lock`),
15859 not read locks (`CRYPTO_r_[un]lock`).
15863 * A first attempt at creating official support for shared
15864 libraries through configuration. I've kept it so the
15865 default is static libraries only, and the OpenSSL programs
15866 are always statically linked for now, but there are
15867 preparations for dynamic linking in place.
15868 This has been tested on Linux and Tru64.
15872 * Randomness polling function for Win9x, as described in:
15873 Peter Gutmann, Software Generation of Practically Strong
15878 * Fix so PRNG is seeded in req if using an already existing
15883 * New options to smime application. -inform and -outform
15884 allow alternative formats for the S/MIME message including
15885 PEM and DER. The -content option allows the content to be
15886 specified separately. This should allow things like Netscape
15887 form signing output easier to verify.
15891 * Fix the ASN1 encoding of tags using the 'long form'.
15895 * New ASN1 functions, `i2c_*` and `c2i_*` for INTEGER and BIT
15896 STRING types. These convert content octets to and from the
15897 underlying type. The actual tag and length octets are
15898 already assumed to have been read in and checked. These
15899 are needed because all other string types have virtually
15900 identical handling apart from the tag. By having versions
15901 of the ASN1 functions that just operate on content octets
15902 IMPLICIT tagging can be handled properly. It also allows
15903 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
15904 and ASN1_INTEGER are identical apart from the tag.
15908 * Change the handling of OID objects as follows:
15910 - New object identifiers are inserted in objects.txt, following
15911 the syntax given in [crypto/objects/README.md](crypto/objects/README.md).
15912 - objects.pl is used to process obj_mac.num and create a new
15914 - obj_dat.pl is used to create a new obj_dat.h, using the data in
15917 This is currently kind of a hack, and the perl code in objects.pl
15918 isn't very elegant, but it works as I intended. The simplest way
15919 to check that it worked correctly is to look in obj_dat.h and
15920 check the array nid_objs and make sure the objects haven't moved
15921 around (this is important!). Additions are OK, as well as
15922 consistent name changes.
15926 * Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
15930 * Addition of the command line parameter '-rand file' to 'openssl req'.
15931 The given file adds to whatever has already been seeded into the
15932 random pool through the RANDFILE configuration file option or
15933 environment variable, or the default random state file.
15937 * mkstack.pl now sorts each macro group into lexical order.
15938 Previously the output order depended on the order the files
15939 appeared in the directory, resulting in needless rewriting
15944 * Patches to make OpenSSL compile under Win32 again. Mostly
15945 work arounds for the VC++ problem that it treats func() as
15946 func(void). Also stripped out the parts of mkdef.pl that
15947 added extra typesafe functions: these no longer exist.
15951 * Reorganisation of the stack code. The macros are now all
15952 collected in safestack.h . Each macro is defined in terms of
15953 a "stack macro" of the form `SKM_<name>(type, a, b)`. The
15954 DEBUG_SAFESTACK is now handled in terms of function casts,
15955 this has the advantage of retaining type safety without the
15956 use of additional functions. If DEBUG_SAFESTACK is not defined
15957 then the non typesafe macros are used instead. Also modified the
15958 mkstack.pl script to handle the new form. Needs testing to see
15959 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
15960 the default if no major problems. Similar behaviour for ASN1_SET_OF
15961 and PKCS12_STACK_OF.
15965 * When some versions of IIS use the 'NET' form of private key the
15966 key derivation algorithm is different. Normally MD5(password) is
15967 used as a 128 bit RC4 key. In the modified case
15968 MD5(MD5(password) + "SGCKEYSALT") is used instead. Added some
15969 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
15970 as the old Netscape_RSA functions except they have an additional
15971 'sgckey' parameter which uses the modified algorithm. Also added
15972 an -sgckey command line option to the rsa utility. Thanks to
15973 Adrian Peck <bertie@ncipher.com> for posting details of the modified
15974 algorithm to openssl-dev.
15978 * The evp_local.h macros were using 'c.##kname' which resulted in
15979 invalid expansion on some systems (SCO 5.0.5 for example).
15980 Corrected to 'c.kname'.
15982 *Phillip Porch <root@theporch.com>*
15984 * New X509_get1_email() and X509_REQ_get1_email() functions that return
15985 a STACK of email addresses from a certificate or request, these look
15986 in the subject name and the subject alternative name extensions and
15987 omit any duplicate addresses.
15991 * Re-implement BN_mod_exp2_mont using independent (and larger) windows.
15992 This makes DSA verification about 2 % faster.
15996 * Increase maximum window size in `BN_mod_exp_...` to 6 bits instead of 5
15997 (meaning that now 2^5 values will be precomputed, which is only 4 KB
15998 plus overhead for 1024 bit moduli).
15999 This makes exponentiations about 0.5 % faster for 1024 bit
16000 exponents (as measured by "openssl speed rsa2048").
16004 * Rename memory handling macros to avoid conflicts with other
16006 Malloc => OPENSSL_malloc
16007 Malloc_locked => OPENSSL_malloc_locked
16008 Realloc => OPENSSL_realloc
16009 Free => OPENSSL_free
16013 * New function BN_mod_exp_mont_word for small bases (roughly 15%
16014 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
16018 * CygWin32 support.
16020 *John Jarvie <jjarvie@newsguy.com>*
16022 * The type-safe stack code has been rejigged. It is now only compiled
16023 in when OpenSSL is configured with the DEBUG_SAFESTACK option and
16024 by default all type-specific stack functions are "#define"d back to
16025 standard stack functions. This results in more streamlined output
16026 but retains the type-safety checking possibilities of the original
16031 * The STACK code has been cleaned up, and certain type declarations
16032 that didn't make a lot of sense have been brought in line. This has
16033 also involved a cleanup of sorts in safestack.h to more correctly
16034 map type-safe stack functions onto their plain stack counterparts.
16035 This work has also resulted in a variety of "const"ifications of
16036 lots of the code, especially `_cmp` operations which should normally
16037 be prototyped with "const" parameters anyway.
16041 * When generating bytes for the first time in md_rand.c, 'stir the pool'
16042 by seeding with STATE_SIZE dummy bytes (with zero entropy count).
16043 (The PRNG state consists of two parts, the large pool 'state' and 'md',
16044 where all of 'md' is used each time the PRNG is used, but 'state'
16045 is used only indexed by a cyclic counter. As entropy may not be
16046 well distributed from the beginning, 'md' is important as a
16047 chaining variable. However, the output function chains only half
16048 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
16049 all of 'md', and seeding with STATE_SIZE dummy bytes will result
16050 in all of 'state' being rewritten, with the new values depending
16051 on virtually all of 'md'. This overcomes the 80 bit limitation.)
16055 * In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
16056 the handshake is continued after ssl_verify_cert_chain();
16057 otherwise, if SSL_VERIFY_NONE is set, remaining error codes
16058 can lead to 'unexplainable' connection aborts later.
16060 *Bodo Moeller; problem tracked down by Lutz Jaenicke*
16062 * Major EVP API cipher revision.
16063 Add hooks for extra EVP features. This allows various cipher
16064 parameters to be set in the EVP interface. Support added for variable
16065 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
16066 setting of RC2 and RC5 parameters.
16068 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
16071 Remove lots of duplicated code from the EVP library. For example *every*
16072 cipher init() function handles the 'iv' in the same way according to the
16073 cipher mode. They also all do nothing if the 'key' parameter is NULL and
16074 for CFB and OFB modes they zero ctx->num.
16076 New functionality allows removal of S/MIME code RC2 hack.
16078 Most of the routines have the same form and so can be declared in terms
16081 By shifting this to the top level EVP_CipherInit() it can be removed from
16082 all individual ciphers. If the cipher wants to handle IVs or keys
16083 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
16086 Change lots of functions like EVP_EncryptUpdate() to now return a
16087 value: although software versions of the algorithms cannot fail
16088 any installed hardware versions can.
16092 * Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
16093 this option is set, tolerate broken clients that send the negotiated
16094 protocol version number instead of the requested protocol version
16099 * Call dh_tmp_cb (set by `..._TMP_DH_CB`) with correct 'is_export' flag;
16100 i.e. non-zero for export ciphersuites, zero otherwise.
16101 Previous versions had this flag inverted, inconsistent with
16102 rsa_tmp_cb (..._TMP_RSA_CB).
16104 *Bodo Moeller; problem reported by Amit Chopra*
16106 * Add missing DSA library text string. Work around for some IIS
16107 key files with invalid SEQUENCE encoding.
16111 * Add a document (doc/standards.txt) that list all kinds of standards
16112 and so on that are implemented in OpenSSL.
16116 * Enhance c_rehash script. Old version would mishandle certificates
16117 with the same subject name hash and wouldn't handle CRLs at all.
16118 Added -fingerprint option to crl utility, to support new c_rehash
16123 * Eliminate non-ANSI declarations in crypto.h and stack.h.
16127 * Fix for SSL server purpose checking. Server checking was
16128 rejecting certificates which had extended key usage present
16129 but no ssl client purpose.
16131 *Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>*
16133 * Make PKCS#12 code work with no password. The PKCS#12 spec
16134 is a little unclear about how a blank password is handled.
16135 Since the password in encoded as a BMPString with terminating
16136 double NULL a zero length password would end up as just the
16137 double NULL. However no password at all is different and is
16138 handled differently in the PKCS#12 key generation code. NS
16139 treats a blank password as zero length. MSIE treats it as no
16140 password on export: but it will try both on import. We now do
16141 the same: PKCS12_parse() tries zero length and no password if
16142 the password is set to "" or NULL (NULL is now a valid password:
16143 it wasn't before) as does the pkcs12 application.
16147 * Bugfixes in `apps/x509.c`: Avoid a memory leak; and don't use
16148 perror when PEM_read_bio_X509_REQ fails, the error message must
16149 be obtained from the error queue.
16153 * Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
16154 it in ERR_remove_state if appropriate, and change ERR_get_state
16155 accordingly to avoid race conditions (this is necessary because
16156 thread_hash is no longer constant once set).
16160 * Bugfix for linux-elf makefile.one.
16164 * RSA_get_default_method() will now cause a default
16165 RSA_METHOD to be chosen if one doesn't exist already.
16166 Previously this was only set during a call to RSA_new()
16167 or RSA_new_method(NULL) meaning it was possible for
16168 RSA_get_default_method() to return NULL.
16172 * Added native name translation to the existing DSO code
16173 that will convert (if the flag to do so is set) filenames
16174 that are sufficiently small and have no path information
16175 into a canonical native form. Eg. "blah" converted to
16176 "libblah.so" or "blah.dll" etc.
16180 * New function ERR_error_string_n(e, buf, len) which is like
16181 ERR_error_string(e, buf), but writes at most 'len' bytes
16182 including the 0 terminator. For ERR_error_string_n, 'buf'
16185 *Damien Miller <djm@mindrot.org>, Bodo Moeller*
16187 * CONF library reworked to become more general. A new CONF
16188 configuration file reader "class" is implemented as well as a
16189 new functions (`NCONF_*`, for "New CONF") to handle it. The now
16190 old `CONF_*` functions are still there, but are reimplemented to
16191 work in terms of the new functions. Also, a set of functions
16192 to handle the internal storage of the configuration data is
16193 provided to make it easier to write new configuration file
16194 reader "classes" (I can definitely see something reading a
16195 configuration file in XML format, for example), called `_CONF_*`,
16196 or "the configuration storage API"...
16198 The new configuration file reading functions are:
16200 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
16201 NCONF_get_section, NCONF_get_string, NCONF_get_numbre
16203 NCONF_default, NCONF_WIN32
16205 NCONF_dump_fp, NCONF_dump_bio
16207 NCONF_default and NCONF_WIN32 are method (or "class") choosers,
16208 NCONF_new creates a new CONF object. This works in the same way
16209 as other interfaces in OpenSSL, like the BIO interface.
16210 `NCONF_dump_*` dump the internal storage of the configuration file,
16211 which is useful for debugging. All other functions take the same
16212 arguments as the old `CONF_*` functions with the exception of the
16213 first that must be a `CONF *` instead of a `LHASH *`.
16215 To make it easier to use the new classes with the old `CONF_*` functions,
16216 the function CONF_set_default_method is provided.
16220 * Add '-tls1' option to 'openssl ciphers', which was already
16221 mentioned in the documentation but had not been implemented.
16222 (This option is not yet really useful because even the additional
16223 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
16227 * Initial DSO code added into libcrypto for letting OpenSSL (and
16228 OpenSSL-based applications) load shared libraries and bind to
16229 them in a portable way.
16231 *Geoff Thorpe, with contributions from Richard Levitte*
16233 ### Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
16235 * Make sure _lrotl and _lrotr are only used with MSVC.
16237 * Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
16238 (the default implementation of RAND_status).
16240 * Rename openssl x509 option '-crlext', which was added in 0.9.5,
16241 to '-clrext' (= clear extensions), as intended and documented.
16242 *Bodo Moeller; inconsistency pointed out by Michael Attili
16243 <attili@amaxo.com>*
16245 * Fix for HMAC. It wasn't zeroing the rest of the block if the key length
16246 was larger than the MD block size.
16248 *Steve Henson, pointed out by Yost William <YostW@tce.com>*
16250 * Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
16251 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
16252 using the passed key: if the passed key was a private key the result
16253 of X509_print(), for example, would be to print out all the private key
16258 * des_quad_cksum() byte order bug fix.
16259 *Ulf Möller, using the problem description in krb4-0.9.7, where
16260 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>*
16262 * Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
16265 *Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>*
16267 * For easily testing in shell scripts whether some command
16268 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
16269 returns with exit code 0 iff no command of the given name is available.
16270 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
16271 the output goes to stdout and nothing is printed to stderr.
16272 Additional arguments are always ignored.
16274 Since for each cipher there is a command of the same name,
16275 the 'no-cipher' compilation switches can be tested this way.
16277 ('openssl no-XXX' is not able to detect pseudo-commands such
16278 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
16282 * Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
16286 * For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
16287 is set; it will be thrown away anyway because each handshake creates
16289 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
16290 to parameters -- in previous versions (since OpenSSL 0.9.3) the
16291 'default key' from SSL_CTX_set_tmp_dh would always be lost, meaning
16292 you effectively got SSL_OP_SINGLE_DH_USE when using this macro.
16296 * New s_client option -ign_eof: EOF at stdin is ignored, and
16297 'Q' and 'R' lose their special meanings (quit/renegotiate).
16298 This is part of what -quiet does; unlike -quiet, -ign_eof
16299 does not suppress any output.
16303 * Add compatibility options to the purpose and trust code. The
16304 purpose X509_PURPOSE_ANY is "any purpose" which automatically
16305 accepts a certificate or CA, this was the previous behaviour,
16306 with all the associated security issues.
16308 X509_TRUST_COMPAT is the old trust behaviour: only and
16309 automatically trust self signed roots in certificate store. A
16310 new trust setting X509_TRUST_DEFAULT is used to specify that
16311 a purpose has no associated trust setting and it should instead
16312 use the value in the default purpose.
16316 * Fix the PKCS#8 DSA private key code so it decodes keys again
16317 and fix a memory leak.
16321 * In util/mkerr.pl (which implements 'make errors'), preserve
16322 reason strings from the previous version of the .c file, as
16323 the default to have only downcase letters (and digits) in
16324 automatically generated reasons codes is not always appropriate.
16328 * In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
16329 using strerror. Previously, ERR_reason_error_string() returned
16330 library names as reason strings for SYSerr; but SYSerr is a special
16331 case where small numbers are errno values, not library numbers.
16335 * Add '-dsaparam' option to 'openssl dhparam' application. This
16336 converts DSA parameters into DH parameters. (When creating parameters,
16337 DSA_generate_parameters is used.)
16341 * Include 'length' (recommended exponent length) in C code generated
16342 by 'openssl dhparam -C'.
16346 * The second argument to set_label in perlasm was already being used
16347 so couldn't be used as a "file scope" flag. Moved to third argument
16352 * In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
16353 instead of RAND_bytes for encryption IVs and salts.
16357 * Include RAND_status() into RAND_METHOD instead of implementing
16358 it only for md_rand.c Otherwise replacing the PRNG by calling
16359 RAND_set_rand_method would be impossible.
16363 * Don't let DSA_generate_key() enter an infinite loop if the random
16364 number generation fails.
16368 * New 'rand' application for creating pseudo-random output.
16372 * Added configuration support for Linux/IA64
16374 *Rolf Haberrecker <rolf@suse.de>*
16376 * Assembler module support for Mingw32.
16380 * Shared library support for HPUX (in shlib/).
16382 *Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous*
16384 * Shared library support for Solaris gcc.
16386 *Lutz Behnke <behnke@trustcenter.de>*
16388 ### Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
16390 * PKCS7_encrypt() was adding text MIME headers twice because they
16391 were added manually and by SMIME_crlf_copy().
16395 * In bntest.c don't call BN_rand with zero bits argument.
16397 *Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>*
16399 * BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
16400 case was implemented. This caused BN_div_recp() to fail occasionally.
16404 * Add an optional second argument to the set_label() in the perl
16405 assembly language builder. If this argument exists and is set
16406 to 1 it signals that the assembler should use a symbol whose
16407 scope is the entire file, not just the current function. This
16408 is needed with MASM which uses the format label:: for this scope.
16410 *Steve Henson, pointed out by Peter Runestig <peter@runestig.com>*
16412 * Change the ASN1 types so they are typedefs by default. Before
16413 almost all types were #define'd to ASN1_STRING which was causing
16414 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
16419 * Change names of new functions to the new get1/get0 naming
16420 convention: After 'get1', the caller owns a reference count
16421 and has to call `..._free`; 'get0' returns a pointer to some
16422 data structure without incrementing reference counters.
16423 (Some of the existing 'get' functions increment a reference
16424 counter, some don't.)
16425 Similarly, 'set1' and 'add1' functions increase reference
16426 counters or duplicate objects.
16430 * Allow for the possibility of temp RSA key generation failure:
16431 the code used to assume it always worked and crashed on failure.
16435 * Fix potential buffer overrun problem in BIO_printf().
16436 *Ulf Möller, using public domain code by Patrick Powell; problem
16437 pointed out by David Sacerdote <das33@cornell.edu>*
16439 * Support EGD <http://www.lothar.com/tech/crypto/>. New functions
16440 RAND_egd() and RAND_status(). In the command line application,
16441 the EGD socket can be specified like a seed file using RANDFILE
16446 * Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
16447 Some CAs (e.g. Verisign) distribute certificates in this form.
16451 * Remove the SSL_ALLOW_ADH compile option and set the default cipher
16452 list to exclude them. This means that no special compilation option
16453 is needed to use anonymous DH: it just needs to be included in the
16458 * Change the EVP_MD_CTX_type macro so its meaning consistent with
16459 EVP_MD_type. The old functionality is available in a new macro called
16460 EVP_MD_md(). Change code that uses it and update docs.
16464 * `..._ctrl` functions now have corresponding `..._callback_ctrl` functions
16465 where the `void *` argument is replaced by a function pointer argument.
16466 Previously `void *` was abused to point to functions, which works on
16467 many platforms, but is not correct. As these functions are usually
16468 called by macros defined in OpenSSL header files, most source code
16469 should work without changes.
16473 * `<openssl/opensslconf.h>` (which is created by Configure) now contains
16474 sections with information on -D... compiler switches used for
16475 compiling the library so that applications can see them. To enable
16476 one of these sections, a pre-processor symbol `OPENSSL_..._DEFINES`
16477 must be defined. E.g.,
16478 #define OPENSSL_ALGORITHM_DEFINES
16479 #include <openssl/opensslconf.h>
16480 defines all pertinent `NO_<algo>` symbols, such as NO_IDEA, NO_RSA, etc.
16482 *Richard Levitte, Ulf and Bodo Möller*
16484 * Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
16489 * Change the 'other' type in certificate aux info to a STACK_OF
16490 X509_ALGOR. Although not an AlgorithmIdentifier as such it has
16491 the required ASN1 format: arbitrary types determined by an OID.
16495 * Add some PEM_write_X509_REQ_NEW() functions and a command line
16496 argument to 'req'. This is not because the function is newer or
16497 better than others it just uses the work 'NEW' in the certificate
16498 request header lines. Some software needs this.
16502 * Reorganise password command line arguments: now passwords can be
16503 obtained from various sources. Delete the PEM_cb function and make
16504 it the default behaviour: i.e. if the callback is NULL and the
16505 usrdata argument is not NULL interpret it as a null terminated pass
16506 phrase. If usrdata and the callback are NULL then the pass phrase
16507 is prompted for as usual.
16511 * Add support for the Compaq Atalla crypto accelerator. If it is installed,
16512 the support is automatically enabled. The resulting binaries will
16513 autodetect the card and use it if present.
16515 *Ben Laurie and Compaq Inc.*
16517 * Work around for Netscape hang bug. This sends certificate request
16518 and server done in one record. Since this is perfectly legal in the
16519 SSL/TLS protocol it isn't a "bug" option and is on by default. See
16520 the bugs/SSLv3 entry for more info.
16524 * HP-UX tune-up: new unified configs, HP C compiler bug workaround.
16528 * Add -rand argument to smime and pkcs12 applications and read/write
16533 * New 'passwd' tool for crypt(3) and apr1 password hashes.
16537 * Add command line password options to the remaining applications.
16541 * Bug fix for BN_div_recp() for numerators with an even number of
16546 * More tests in bntest.c, and changed test_bn output.
16550 * ./config recognizes MacOS X now.
16554 * Bug fix for BN_div() when the first words of num and divisor are
16555 equal (it gave wrong results if `(rem=(n1-q*d0)&BN_MASK2) < d0)`.
16559 * Add support for various broken PKCS#8 formats, and command line
16560 options to produce them.
16564 * New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
16565 get temporary BIGNUMs from a BN_CTX.
16569 * Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
16574 * Change the `SSLeay_add_all_*()` functions to `OpenSSL_add_all_*()` and
16575 include a #define from the old name to the new. The original intent
16576 was that statically linked binaries could for example just call
16577 SSLeay_add_all_ciphers() to just add ciphers to the table and not
16578 link with digests. This never worked because SSLeay_add_all_digests()
16579 and SSLeay_add_all_ciphers() were in the same source file so calling
16580 one would link with the other. They are now in separate source files.
16584 * Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
16588 * Use a less unusual form of the Miller-Rabin primality test (it used
16589 a binary algorithm for exponentiation integrated into the Miller-Rabin
16590 loop, our standard modexp algorithms are faster).
16594 * Support for the EBCDIC character set completed.
16596 *Martin Kraemer <Martin.Kraemer@Mch.SNI.De>*
16598 * Source code cleanups: use const where appropriate, eliminate casts,
16599 use `void *` instead of `char *` in lhash.
16603 * Bugfix: ssl3_send_server_key_exchange was not restartable
16604 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
16605 this the server could overwrite ephemeral keys that the client
16610 * Turn DSA_is_prime into a macro that calls BN_is_prime,
16611 using 50 iterations of the Rabin-Miller test.
16613 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
16614 iterations of the Rabin-Miller test as required by the appendix
16615 to FIPS PUB 186[-1]) instead of DSA_is_prime.
16616 As BN_is_prime_fasttest includes trial division, DSA parameter
16617 generation becomes much faster.
16619 This implies a change for the callback functions in DSA_is_prime
16620 and DSA_generate_parameters: The callback function is called once
16621 for each positive witness in the Rabin-Miller test, not just
16622 occasionally in the inner loop; and the parameters to the
16623 callback function now provide an iteration count for the outer
16624 loop rather than for the current invocation of the inner loop.
16625 DSA_generate_parameters additionally can call the callback
16626 function with an 'iteration count' of -1, meaning that a
16627 candidate has passed the trial division test (when q is generated
16628 from an application-provided seed, trial division is skipped).
16632 * New function BN_is_prime_fasttest that optionally does trial
16633 division before starting the Rabin-Miller test and has
16634 an additional BN_CTX * argument (whereas BN_is_prime always
16635 has to allocate at least one BN_CTX).
16636 'callback(1, -1, cb_arg)' is called when a number has passed the
16637 trial division stage.
16641 * Fix for bug in CRL encoding. The validity dates weren't being handled
16646 * New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
16650 * New function BN_pseudo_rand().
16654 * Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
16655 bignum version of BN_from_montgomery() with the working code from
16656 SSLeay 0.9.0 (the word based version is faster anyway), and clean up
16661 * Avoid a race condition in s2_clnt.c (function get_server_hello) that
16662 made it impossible to use the same SSL_SESSION data structure in
16663 SSL2 clients in multiple threads.
16667 * The return value of RAND_load_file() no longer counts bytes obtained
16668 by stat(). RAND_load_file(..., -1) is new and uses the complete file
16669 to seed the PRNG (previously an explicit byte count was required).
16671 *Ulf Möller, Bodo Möller*
16673 * Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
16674 used `char *` instead of `void *` and had casts all over the place.
16678 * Make BN_generate_prime() return NULL on error if ret!=NULL.
16682 * Retain source code compatibility for BN_prime_checks macro:
16683 BN_is_prime(..., BN_prime_checks, ...) now uses
16684 BN_prime_checks_for_size to determine the appropriate number of
16685 Rabin-Miller iterations.
16689 * Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
16690 DH_CHECK_P_NOT_SAFE_PRIME.
16691 (Check if this is true? OpenPGP calls them "strong".)
16695 * Merge the functionality of "dh" and "gendh" programs into a new program
16696 "dhparam". The old programs are retained for now but will handle DH keys
16697 (instead of parameters) in future.
16701 * Make the ciphers, s_server and s_client programs check the return values
16702 when a new cipher list is set.
16706 * Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
16707 ciphers. Before when the 56bit ciphers were enabled the sorting was
16710 The syntax for the cipher sorting has been extended to support sorting by
16711 cipher-strength (using the strength_bits hard coded in the tables).
16712 The new command is `@STRENGTH` (see also `doc/apps/ciphers.pod`).
16714 Fix a bug in the cipher-command parser: when supplying a cipher command
16715 string with an "undefined" symbol (neither command nor alphanumeric
16716 *A-Za-z0-9*, ssl_set_cipher_list used to hang in an endless loop. Now
16717 an error is flagged.
16719 Due to the strength-sorting extension, the code of the
16720 ssl_create_cipher_list() function was completely rearranged. I hope that
16721 the readability was also increased :-)
16723 *Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>*
16725 * Minor change to 'x509' utility. The -CAcreateserial option now uses 1
16726 for the first serial number and places 2 in the serial number file. This
16727 avoids problems when the root CA is created with serial number zero and
16728 the first user certificate has the same issuer name and serial number
16733 * Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
16734 the new code. Add documentation for this stuff.
16738 * Changes to X509_ATTRIBUTE utilities. These have been renamed from
16739 `X509_*()` to `X509at_*()` on the grounds that they don't handle X509
16740 structures and behave in an analogous way to the X509v3 functions:
16741 they shouldn't be called directly but wrapper functions should be used
16744 So we also now have some wrapper functions that call the X509at functions
16745 when passed certificate requests. (TO DO: similar things can be done with
16746 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
16747 things. Some of these need some d2i or i2d and print functionality
16748 because they handle more complex structures.)
16752 * Add missing #ifndefs that caused missing symbols when building libssl
16753 as a shared library without RSA. Use #ifndef NO_SSL2 instead of
16754 NO_RSA in `ssl/s2*.c`.
16756 *Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller*
16758 * Precautions against using the PRNG uninitialized: RAND_bytes() now
16759 has a return value which indicates the quality of the random data
16760 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
16761 error queue. New function RAND_pseudo_bytes() generates output that is
16762 guaranteed to be unique but not unpredictable. RAND_add is like
16763 RAND_seed, but takes an extra argument for an entropy estimate
16764 (RAND_seed always assumes full entropy).
16768 * Do more iterations of Rabin-Miller probable prime test (specifically,
16769 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
16770 instead of only 2 for all lengths; see BN_prime_checks_for_size definition
16771 in crypto/bn/bn_prime.c for the complete table). This guarantees a
16772 false-positive rate of at most 2^-80 for random input.
16776 * Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
16780 * New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
16781 in the 0.9.5 release), this returns the chain
16782 from an X509_CTX structure with a dup of the stack and all
16783 the X509 reference counts upped: so the stack will exist
16784 after X509_CTX_cleanup() has been called. Modify pkcs12.c
16787 Also make SSL_SESSION_print() print out the verify return
16792 * Add manpage for the pkcs12 command. Also change the default
16793 behaviour so MAC iteration counts are used unless the new
16794 -nomaciter option is used. This improves file security and
16795 only older versions of MSIE (4.0 for example) need it.
16799 * Honor the no-xxx Configure options when creating .DEF files.
16803 * Add PKCS#10 attributes to field table: challengePassword,
16804 unstructuredName and unstructuredAddress. These are taken from
16805 draft PKCS#9 v2.0 but are compatible with v1.2 provided no
16806 international characters are used.
16808 More changes to X509_ATTRIBUTE code: allow the setting of types
16809 based on strings. Remove the 'loc' parameter when adding
16810 attributes because these will be a SET OF encoding which is sorted
16815 * Initial changes to the 'req' utility to allow request generation
16816 automation. This will allow an application to just generate a template
16817 file containing all the field values and have req construct the
16820 Initial support for X509_ATTRIBUTE handling. Stacks of these are
16821 used all over the place including certificate requests and PKCS#7
16822 structures. They are currently handled manually where necessary with
16823 some primitive wrappers for PKCS#7. The new functions behave in a
16824 manner analogous to the X509 extension functions: they allow
16825 attributes to be looked up by NID and added.
16827 Later something similar to the X509V3 code would be desirable to
16828 automatically handle the encoding, decoding and printing of the
16829 more complex types. The string types like challengePassword can
16830 be handled by the string table functions.
16832 Also modified the multi byte string table handling. Now there is
16833 a 'global mask' which masks out certain types. The table itself
16834 can use the flag STABLE_NO_MASK to ignore the mask setting: this
16835 is useful when for example there is only one permissible type
16836 (as in countryName) and using the mask might result in no valid
16841 * Clean up 'Finished' handling, and add functions SSL_get_finished and
16842 SSL_get_peer_finished to allow applications to obtain the latest
16843 Finished messages sent to the peer or expected from the peer,
16844 respectively. (SSL_get_peer_finished is usually the Finished message
16845 actually received from the peer, otherwise the protocol will be aborted.)
16847 As the Finished message are message digests of the complete handshake
16848 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
16849 be used for external authentication procedures when the authentication
16850 provided by SSL/TLS is not desired or is not enough.
16854 * Enhanced support for Alpha Linux is added. Now ./config checks if
16855 the host supports BWX extension and if Compaq C is present on the
16856 $PATH. Just exploiting of the BWX extension results in 20-30%
16857 performance kick for some algorithms, e.g. DES and RC4 to mention
16858 a couple. Compaq C in turn generates ~20% faster code for MD5 and
16863 * Add support for MS "fast SGC". This is arguably a violation of the
16864 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
16865 weak crypto and after checking the certificate is SGC a second one
16866 with strong crypto. MS SGC stops the first handshake after receiving
16867 the server certificate message and sends a second client hello. Since
16868 a server will typically do all the time consuming operations before
16869 expecting any further messages from the client (server key exchange
16870 is the most expensive) there is little difference between the two.
16872 To get OpenSSL to support MS SGC we have to permit a second client
16873 hello message after we have sent server done. In addition we have to
16874 reset the MAC if we do get this second client hello.
16878 * Add a function 'd2i_AutoPrivateKey()' this will automatically decide
16879 if a DER encoded private key is RSA or DSA traditional format. Changed
16880 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
16881 format DER encoded private key. Newer code should use PKCS#8 format which
16882 has the key type encoded in the ASN1 structure. Added DER private key
16883 support to pkcs8 application.
16887 * SSL 3/TLS 1 servers now don't request certificates when an anonymous
16888 ciphersuites has been selected (as required by the SSL 3/TLS 1
16889 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
16890 is set, we interpret this as a request to violate the specification
16891 (the worst that can happen is a handshake failure, and 'correct'
16892 behaviour would result in a handshake failure anyway).
16896 * In SSL_CTX_add_session, take into account that there might be multiple
16897 SSL_SESSION structures with the same session ID (e.g. when two threads
16898 concurrently obtain them from an external cache).
16899 The internal cache can handle only one SSL_SESSION with a given ID,
16900 so if there's a conflict, we now throw out the old one to achieve
16905 * Add OIDs for idea and blowfish in CBC mode. This will allow both
16906 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
16907 some routines that use cipher OIDs: some ciphers do not have OIDs
16908 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
16913 * Simplify the trust setting structure and code. Now we just have
16914 two sequences of OIDs for trusted and rejected settings. These will
16915 typically have values the same as the extended key usage extension
16916 and any application specific purposes.
16918 The trust checking code now has a default behaviour: it will just
16919 check for an object with the same NID as the passed id. Functions can
16920 be provided to override either the default behaviour or the behaviour
16921 for a given id. SSL client, server and email already have functions
16922 in place for compatibility: they check the NID and also return "trusted"
16923 if the certificate is self signed.
16927 * Add d2i,i2d bio/fp functions for PrivateKey: these convert the
16928 traditional format into an EVP_PKEY structure.
16932 * Add a password callback function PEM_cb() which either prompts for
16933 a password if usr_data is NULL or otherwise assumes it is a null
16934 terminated password. Allow passwords to be passed on command line
16935 environment or config files in a few more utilities.
16939 * Add a bunch of DER and PEM functions to handle PKCS#8 format private
16940 keys. Add some short names for PKCS#8 PBE algorithms and allow them
16941 to be specified on the command line for the pkcs8 and pkcs12 utilities.
16942 Update documentation.
16946 * Support for ASN1 "NULL" type. This could be handled before by using
16947 ASN1_TYPE but there wasn't any function that would try to read a NULL
16948 and produce an error if it couldn't. For compatibility we also have
16949 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
16950 don't allocate anything because they don't need to.
16954 * Initial support for MacOS is now provided. Examine INSTALL.MacOS
16957 *Andy Polyakov, Roy Woods <roy@centicsystems.ca>*
16959 * Rebuild of the memory allocation routines used by OpenSSL code and
16960 possibly others as well. The purpose is to make an interface that
16961 provide hooks so anyone can build a separate set of allocation and
16962 deallocation routines to be used by OpenSSL, for example memory
16963 pool implementations, or something else, which was previously hard
16964 since Malloc(), Realloc() and Free() were defined as macros having
16965 the values malloc, realloc and free, respectively (except for Win32
16966 compilations). The same is provided for memory debugging code.
16967 OpenSSL already comes with functionality to find memory leaks, but
16968 this gives people a chance to debug other memory problems.
16970 With these changes, a new set of functions and macros have appeared:
16972 CRYPTO_set_mem_debug_functions() [F]
16973 CRYPTO_get_mem_debug_functions() [F]
16974 CRYPTO_dbg_set_options() [F]
16975 CRYPTO_dbg_get_options() [F]
16976 CRYPTO_malloc_debug_init() [M]
16978 The memory debug functions are NULL by default, unless the library
16979 is compiled with CRYPTO_MDEBUG or friends is defined. If someone
16980 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
16981 gives the standard debugging functions that come with OpenSSL) or
16982 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
16983 provided by the library user) must be used. When the standard
16984 debugging functions are used, CRYPTO_dbg_set_options can be used to
16985 request additional information:
16986 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
16987 the CRYPTO_MDEBUG_xxx macro when compiling the library.
16989 Also, things like CRYPTO_set_mem_functions will always give the
16990 expected result (the new set of functions is used for allocation
16991 and deallocation) at all times, regardless of platform and compiler
16994 To finish it up, some functions that were never use in any other
16995 way than through macros have a new API and new semantic:
16997 CRYPTO_dbg_malloc()
16998 CRYPTO_dbg_realloc()
17001 All macros of value have retained their old syntax.
17003 *Richard Levitte and Bodo Moeller*
17005 * Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
17006 ordering of SMIMECapabilities wasn't in "strength order" and there
17007 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
17012 * Some ASN1 types with illegal zero length encoding (INTEGER,
17013 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
17015 *Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson*
17017 * Merge in my S/MIME library for OpenSSL. This provides a simple
17018 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
17019 functionality to handle multipart/signed properly) and a utility
17020 called 'smime' to call all this stuff. This is based on code I
17021 originally wrote for Celo who have kindly allowed it to be
17022 included in OpenSSL.
17026 * Add variants des_set_key_checked and des_set_key_unchecked of
17027 des_set_key (aka des_key_sched). Global variable des_check_key
17028 decides which of these is called by des_set_key; this way
17029 des_check_key behaves as it always did, but applications and
17030 the library itself, which was buggy for des_check_key == 1,
17031 have a cleaner way to pick the version they need.
17035 * New function PKCS12_newpass() which changes the password of a
17040 * Modify X509_TRUST and X509_PURPOSE so it also uses a static and
17041 dynamic mix. In both cases the ids can be used as an index into the
17042 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
17043 functions so they accept a list of the field values and the
17044 application doesn't need to directly manipulate the X509_TRUST
17049 * Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
17054 * Modify the way the V3 extension code looks up extensions. This now
17055 works in a similar way to the object code: we have some "standard"
17056 extensions in a static table which is searched with OBJ_bsearch()
17057 and the application can add dynamic ones if needed. The file
17058 crypto/x509v3/ext_dat.h now has the info: this file needs to be
17059 updated whenever a new extension is added to the core code and kept
17060 in ext_nid order. There is a simple program 'tabtest.c' which checks
17061 this. New extensions are not added too often so this file can readily
17062 be maintained manually.
17064 There are two big advantages in doing things this way. The extensions
17065 can be looked up immediately and no longer need to be "added" using
17066 X509V3_add_standard_extensions(): this function now does nothing.
17067 Side note: I get *lots* of email saying the extension code doesn't
17068 work because people forget to call this function.
17069 Also no dynamic allocation is done unless new extensions are added:
17070 so if we don't add custom extensions there is no need to call
17071 X509V3_EXT_cleanup().
17075 * Modify enc utility's salting as follows: make salting the default. Add a
17076 magic header, so unsalted files fail gracefully instead of just decrypting
17077 to garbage. This is because not salting is a big security hole, so people
17078 should be discouraged from doing it.
17082 * Fixes and enhancements to the 'x509' utility. It allowed a message
17083 digest to be passed on the command line but it only used this
17084 parameter when signing a certificate. Modified so all relevant
17085 operations are affected by the digest parameter including the
17086 -fingerprint and -x509toreq options. Also -x509toreq choked if a
17087 DSA key was used because it didn't fix the digest.
17091 * Initial certificate chain verify code. Currently tests the untrusted
17092 certificates for consistency with the verify purpose (which is set
17093 when the X509_STORE_CTX structure is set up) and checks the pathlength.
17095 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
17096 this is because it will reject chains with invalid extensions whereas
17097 every previous version of OpenSSL and SSLeay made no checks at all.
17099 Trust code: checks the root CA for the relevant trust settings. Trust
17100 settings have an initial value consistent with the verify purpose: e.g.
17101 if the verify purpose is for SSL client use it expects the CA to be
17102 trusted for SSL client use. However the default value can be changed to
17103 permit custom trust settings: one example of this would be to only trust
17104 certificates from a specific "secure" set of CAs.
17106 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
17107 which should be used for version portability: especially since the
17108 verify structure is likely to change more often now.
17110 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
17111 to set them. If not set then assume SSL clients will verify SSL servers
17114 Two new options to the verify program: -untrusted allows a set of
17115 untrusted certificates to be passed in and -purpose which sets the
17116 intended purpose of the certificate. If a purpose is set then the
17117 new chain verify code is used to check extension consistency.
17121 * Support for the authority information access extension.
17125 * Modify RSA and DSA PEM read routines to transparently handle
17126 PKCS#8 format private keys. New *_PUBKEY_* functions that handle
17127 public keys in a format compatible with certificate
17128 SubjectPublicKeyInfo structures. Unfortunately there were already
17129 functions called *_PublicKey_* which used various odd formats so
17130 these are retained for compatibility: however the DSA variants were
17131 never in a public release so they have been deleted. Changed dsa/rsa
17132 utilities to handle the new format: note no releases ever handled public
17133 keys so we should be OK.
17135 The primary motivation for this change is to avoid the same fiasco
17136 that dogs private keys: there are several incompatible private key
17137 formats some of which are standard and some OpenSSL specific and
17138 require various evil hacks to allow partial transparent handling and
17139 even then it doesn't work with DER formats. Given the option anything
17140 other than PKCS#8 should be dumped: but the other formats have to
17141 stay in the name of compatibility.
17143 With public keys and the benefit of hindsight one standard format
17144 is used which works with EVP_PKEY, RSA or DSA structures: though
17145 it clearly returns an error if you try to read the wrong kind of key.
17147 Added a -pubkey option to the 'x509' utility to output the public key.
17148 Also rename the `EVP_PKEY_get_*()` to `EVP_PKEY_rget_*()`
17149 (renamed to `EVP_PKEY_get1_*()` in the OpenSSL 0.9.5 release) and add
17150 `EVP_PKEY_rset_*()` functions (renamed to `EVP_PKEY_set1_*()`)
17151 that do the same as the `EVP_PKEY_assign_*()` except they up the
17152 reference count of the added key (they don't "swallow" the
17157 * Fixes to crypto/x509/by_file.c the code to read in certificates and
17158 CRLs would fail if the file contained no certificates or no CRLs:
17159 added a new function to read in both types and return the number
17160 read: this means that if none are read it will be an error. The
17161 DER versions of the certificate and CRL reader would always fail
17162 because it isn't possible to mix certificates and CRLs in DER format
17163 without choking one or the other routine. Changed this to just read
17164 a certificate: this is the best we can do. Also modified the code
17165 in `apps/verify.c` to take notice of return codes: it was previously
17166 attempting to read in certificates from NULL pointers and ignoring
17167 any errors: this is one reason why the cert and CRL reader seemed
17168 to work. It doesn't check return codes from the default certificate
17169 routines: these may well fail if the certificates aren't installed.
17173 * Code to support otherName option in GeneralName.
17177 * First update to verify code. Change the verify utility
17178 so it warns if it is passed a self signed certificate:
17179 for consistency with the normal behaviour. X509_verify
17180 has been modified to it will now verify a self signed
17181 certificate if *exactly* the same certificate appears
17182 in the store: it was previously impossible to trust a
17183 single self signed certificate. This means that:
17184 openssl verify ss.pem
17185 now gives a warning about a self signed certificate but
17186 openssl verify -CAfile ss.pem ss.pem
17191 * For servers, store verify_result in SSL_SESSION data structure
17192 (and add it to external session representation).
17193 This is needed when client certificate verifications fails,
17194 but an application-provided verification callback (set by
17195 SSL_CTX_set_cert_verify_callback) allows accepting the session
17196 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
17197 but returns 1): When the session is reused, we have to set
17198 ssl->verify_result to the appropriate error code to avoid
17201 *Bodo Moeller, problem pointed out by Lutz Jaenicke*
17203 * Fix a bug in the new PKCS#7 code: it didn't consider the
17204 case in PKCS7_dataInit() where the signed PKCS7 structure
17205 didn't contain any existing data because it was being created.
17207 *Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson*
17209 * Add a salt to the key derivation routines in enc.c. This
17210 forms the first 8 bytes of the encrypted file. Also add a
17211 -S option to allow a salt to be input on the command line.
17215 * New function X509_cmp(). Oddly enough there wasn't a function
17216 to compare two certificates. We do this by working out the SHA1
17217 hash and comparing that. X509_cmp() will be needed by the trust
17222 * SSL_get1_session() is like SSL_get_session(), but increments
17223 the reference count in the SSL_SESSION returned.
17225 *Geoff Thorpe <geoff@eu.c2.net>*
17227 * Fix for 'req': it was adding a null to request attributes.
17228 Also change the X509_LOOKUP and X509_INFO code to handle
17229 certificate auxiliary information.
17233 * Add support for 40 and 64 bit RC2 and RC4 algorithms: document
17238 * Add the possibility to add extra information to the memory leak
17239 detecting output, to form tracebacks, showing from where each
17240 allocation was originated: CRYPTO_push_info("constant string") adds
17241 the string plus current file name and line number to a per-thread
17242 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
17243 is like calling CYRPTO_pop_info() until the stack is empty.
17244 Also updated memory leak detection code to be multi-thread-safe.
17248 * Add options -text and -noout to pkcs7 utility and delete the
17249 encryption options which never did anything. Update docs.
17253 * Add options to some of the utilities to allow the pass phrase
17254 to be included on either the command line (not recommended on
17255 OSes like Unix) or read from the environment. Update the
17256 manpages and fix a few bugs.
17260 * Add a few manpages for some of the openssl commands.
17264 * Fix the -revoke option in ca. It was freeing up memory twice,
17265 leaking and not finding already revoked certificates.
17269 * Extensive changes to support certificate auxiliary information.
17270 This involves the use of X509_CERT_AUX structure and X509_AUX
17271 functions. An X509_AUX function such as PEM_read_X509_AUX()
17272 can still read in a certificate file in the usual way but it
17273 will also read in any additional "auxiliary information". By
17274 doing things this way a fair degree of compatibility can be
17275 retained: existing certificates can have this information added
17276 using the new 'x509' options.
17278 Current auxiliary information includes an "alias" and some trust
17279 settings. The trust settings will ultimately be used in enhanced
17280 certificate chain verification routines: currently a certificate
17281 can only be trusted if it is self signed and then it is trusted
17286 * Fix assembler for Alpha (tested only on DEC OSF not Linux or `*BSD`).
17287 The problem was that one of the replacement routines had not been working
17288 since SSLeay releases. For now the offending routine has been replaced
17289 with non-optimised assembler. Even so, this now gives around 95%
17290 performance improvement for 1024 bit RSA signs.
17294 * Hack to fix PKCS#7 decryption when used with some unorthodox RC2
17295 handling. Most clients have the effective key size in bits equal to
17296 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
17297 A few however don't do this and instead use the size of the decrypted key
17298 to determine the RC2 key length and the AlgorithmIdentifier to determine
17299 the effective key length. In this case the effective key length can still
17300 be 40 bits but the key length can be 168 bits for example. This is fixed
17301 by manually forcing an RC2 key into the EVP_PKEY structure because the
17302 EVP code can't currently handle unusual RC2 key sizes: it always assumes
17303 the key length and effective key length are equal.
17307 * Add a bunch of functions that should simplify the creation of
17308 X509_NAME structures. Now you should be able to do:
17309 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
17310 and have it automatically work out the correct field type and fill in
17311 the structures. The more adventurous can try:
17312 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
17313 and it will (hopefully) work out the correct multibyte encoding.
17317 * Change the 'req' utility to use the new field handling and multibyte
17318 copy routines. Before the DN field creation was handled in an ad hoc
17319 way in req, ca, and x509 which was rather broken and didn't support
17320 BMPStrings or UTF8Strings. Since some software doesn't implement
17321 BMPStrings or UTF8Strings yet, they can be enabled using the config file
17322 using the dirstring_type option. See the new comment in the default
17323 openssl.cnf for more info.
17327 * Make crypto/rand/md_rand.c more robust:
17328 - Assure unique random numbers after fork().
17329 - Make sure that concurrent threads access the global counter and
17330 md serializably so that we never lose entropy in them
17331 or use exactly the same state in multiple threads.
17332 Access to the large state is not always serializable because
17333 the additional locking could be a performance killer, and
17334 md should be large enough anyway.
17338 * New file `apps/app_rand.c` with commonly needed functionality
17339 for handling the random seed file.
17341 Use the random seed file in some applications that previously did not:
17343 dsaparam -genkey (which also ignored its '-rand' option),
17346 x509 (when signing).
17347 Except on systems with /dev/urandom, it is crucial to have a random
17348 seed file at least for key creation, DSA signing, and for DH exchanges;
17349 for RSA signatures we could do without one.
17351 gendh and gendsa (unlike genrsa) used to read only the first byte
17352 of each file listed in the '-rand' option. The function as previously
17353 found in genrsa is now in app_rand.c and is used by all programs
17354 that support '-rand'.
17358 * In RAND_write_file, use mode 0600 for creating files;
17359 don't just chmod when it may be too late.
17363 * Report an error from X509_STORE_load_locations
17364 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
17368 * New function ASN1_mbstring_copy() this copies a string in either
17369 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
17370 into an ASN1_STRING type. A mask of permissible types is passed
17371 and it chooses the "minimal" type to use or an error if not type
17376 * Add function equivalents to the various macros in asn1.h. The old
17377 macros are retained with an `M_` prefix. Code inside the library can
17378 use the `M_` macros. External code (including the openssl utility)
17379 should *NOT* in order to be "shared library friendly".
17383 * Add various functions that can check a certificate's extensions
17384 to see if it usable for various purposes such as SSL client,
17385 server or S/MIME and CAs of these types. This is currently
17386 VERY EXPERIMENTAL but will ultimately be used for certificate chain
17387 verification. Also added a -purpose flag to x509 utility to
17388 print out all the purposes.
17392 * Add a CRYPTO_EX_DATA to X509 certificate structure and associated
17397 * New `X509V3_{X509,CRL,REVOKED}_get_d2i()` functions. These will search
17398 for, obtain and decode and extension and obtain its critical flag.
17399 This allows all the necessary extension code to be handled in a
17400 single function call.
17404 * RC4 tune-up featuring 30-40% performance improvement on most RISC
17405 platforms. See crypto/rc4/rc4_enc.c for further details.
17409 * New -noout option to asn1parse. This causes no output to be produced
17410 its main use is when combined with -strparse and -out to extract data
17411 from a file (which may not be in ASN.1 format).
17415 * Fix for pkcs12 program. It was hashing an invalid certificate pointer
17416 when producing the local key id.
17418 *Richard Levitte <levitte@stacken.kth.se>*
17420 * New option -dhparam in s_server. This allows a DH parameter file to be
17421 stated explicitly. If it is not stated then it tries the first server
17422 certificate file. The previous behaviour hard coded the filename
17427 * Add -pubin and -pubout options to the rsa and dsa commands. These allow
17428 a public key to be input or output. For example:
17429 openssl rsa -in key.pem -pubout -out pubkey.pem
17430 Also added necessary DSA public key functions to handle this.
17434 * Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
17435 in the message. This was handled by allowing
17436 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
17438 *Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>*
17440 * Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
17441 to the end of the strings whereas this didn't. This would cause problems
17442 if strings read with d2i_ASN1_bytes() were later modified.
17444 *Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>*
17446 * Fix for base64 decode bug. When a base64 bio reads only one line of
17447 data and it contains EOF it will end up returning an error. This is
17448 caused by input 46 bytes long. The cause is due to the way base64
17449 BIOs find the start of base64 encoded data. They do this by trying a
17450 trial decode on each line until they find one that works. When they
17451 do a flag is set and it starts again knowing it can pass all the
17452 data directly through the decoder. Unfortunately it doesn't reset
17453 the context it uses. This means that if EOF is reached an attempt
17454 is made to pass two EOFs through the context and this causes the
17455 resulting error. This can also cause other problems as well. As is
17456 usual with these problems it takes *ages* to find and the fix is
17457 trivial: move one line.
17459 *Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer)*
17461 * Ugly workaround to get s_client and s_server working under Windows. The
17462 old code wouldn't work because it needed to select() on sockets and the
17463 tty (for keypresses and to see if data could be written). Win32 only
17464 supports select() on sockets so we select() with a 1s timeout on the
17465 sockets and then see if any characters are waiting to be read, if none
17466 are present then we retry, we also assume we can always write data to
17467 the tty. This isn't nice because the code then blocks until we've
17468 received a complete line of data and it is effectively polling the
17469 keyboard at 1s intervals: however it's quite a bit better than not
17470 working at all :-) A dedicated Windows application might handle this
17471 with an event loop for example.
17475 * Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
17476 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
17477 will be called when RSA_sign() and RSA_verify() are used. This is useful
17478 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
17479 For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
17480 should *not* be used: RSA_sign() and RSA_verify() must be used instead.
17481 This necessitated the support of an extra signature type NID_md5_sha1
17482 for SSL signatures and modifications to the SSL library to use it instead
17483 of calling RSA_public_decrypt() and RSA_private_encrypt().
17487 * Add new -verify -CAfile and -CApath options to the crl program, these
17488 will lookup a CRL issuers certificate and verify the signature in a
17489 similar way to the verify program. Tidy up the crl program so it
17490 no longer accesses structures directly. Make the ASN1 CRL parsing a bit
17491 less strict. It will now permit CRL extensions even if it is not
17492 a V2 CRL: this will allow it to tolerate some broken CRLs.
17496 * Initialize all non-automatic variables each time one of the openssl
17497 sub-programs is started (this is necessary as they may be started
17498 multiple times from the "OpenSSL>" prompt).
17500 *Lennart Bang, Bodo Moeller*
17502 * Preliminary compilation option RSA_NULL which disables RSA crypto without
17503 removing all other RSA functionality (this is what NO_RSA does). This
17504 is so (for example) those in the US can disable those operations covered
17505 by the RSA patent while allowing storage and parsing of RSA keys and RSA
17510 * Non-copying interface to BIO pairs.
17511 (still largely untested)
17515 * New function ASN1_tag2str() to convert an ASN1 tag to a descriptive
17516 ASCII string. This was handled independently in various places before.
17520 * New functions UTF8_getc() and UTF8_putc() that parse and generate
17521 UTF8 strings a character at a time.
17525 * Use client_version from client hello to select the protocol
17526 (s23_srvr.c) and for RSA client key exchange verification
17527 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
17531 * Add various utility functions to handle SPKACs, these were previously
17532 handled by poking round in the structure internals. Added new function
17533 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
17534 print, verify and generate SPKACs. Based on an original idea from
17535 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
17539 * RIPEMD160 is operational on all platforms and is back in 'make test'.
17543 * Allow the config file extension section to be overwritten on the
17544 command line. Based on an original idea from Massimiliano Pala
17545 <madwolf@comune.modena.it>. The new option is called -extensions
17546 and can be applied to ca, req and x509. Also -reqexts to override
17547 the request extensions in req and -crlexts to override the crl extensions
17552 * Add new feature to the SPKAC handling in ca. Now you can include
17553 the same field multiple times by preceding it by "XXXX." for example:
17556 this is the same syntax as used in the req config file.
17560 * Allow certificate extensions to be added to certificate requests. These
17561 are specified in a 'req_extensions' option of the req section of the
17562 config file. They can be printed out with the -text option to req but
17563 are otherwise ignored at present.
17567 * Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
17568 data read consists of only the final block it would not decrypted because
17569 EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
17570 A misplaced 'break' also meant the decrypted final block might not be
17571 copied until the next read.
17575 * Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
17576 a few extra parameters to the DH structure: these will be useful if
17577 for example we want the value of 'q' or implement X9.42 DH.
17581 * Initial support for DSA_METHOD. This is based on the RSA_METHOD and
17582 provides hooks that allow the default DSA functions or functions on a
17583 "per key" basis to be replaced. This allows hardware acceleration and
17584 hardware key storage to be handled without major modification to the
17585 library. Also added low-level modexp hooks and CRYPTO_EX structure and
17586 associated functions.
17590 * Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
17591 as "read only": it can't be written to and the buffer it points to will
17592 not be freed. Reading from a read only BIO is much more efficient than
17593 a normal memory BIO. This was added because there are several times when
17594 an area of memory needs to be read from a BIO. The previous method was
17595 to create a memory BIO and write the data to it, this results in two
17596 copies of the data and an O(n^2) reading algorithm. There is a new
17597 function BIO_new_mem_buf() which creates a read only memory BIO from
17598 an area of memory. Also modified the PKCS#7 routines to use read only
17603 * Bugfix: ssl23_get_client_hello did not work properly when called in
17604 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
17605 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
17606 but a retry condition occurred while trying to read the rest.
17610 * The PKCS7_ENC_CONTENT_new() function was setting the content type as
17611 NID_pkcs7_encrypted by default: this was wrong since this should almost
17612 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
17613 the encrypted data type: this is a more sensible place to put it and it
17614 allows the PKCS#12 code to be tidied up that duplicated this
17619 * Changed obj_dat.pl script so it takes its input and output files on
17620 the command line. This should avoid shell escape redirection problems
17625 * Initial support for certificate extension requests, these are included
17626 in things like Xenroll certificate requests. Included functions to allow
17627 extensions to be obtained and added.
17631 * -crlf option to s_client and s_server for sending newlines as
17632 CRLF (as required by many protocols).
17636 ### Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
17638 * Install libRSAglue.a when OpenSSL is built with RSAref.
17640 *Ralf S. Engelschall*
17642 * A few more `#ifndef NO_FP_API / #endif` pairs for consistency.
17644 *Andrija Antonijevic <TheAntony2@bigfoot.com>*
17646 * Fix -startdate and -enddate (which was missing) arguments to 'ca'
17651 * New function DSA_dup_DH, which duplicates DSA parameters/keys as
17652 DH parameters/keys (q is lost during that conversion, but the resulting
17653 DH parameters contain its length).
17655 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
17656 much faster than DH_generate_parameters (which creates parameters
17657 where `p = 2*q + 1`), and also the smaller q makes DH computations
17658 much more efficient (160-bit exponentiation instead of 1024-bit
17659 exponentiation); so this provides a convenient way to support DHE
17660 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
17661 utter importance to use
17662 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
17664 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
17665 when such DH parameters are used, because otherwise small subgroup
17666 attacks may become possible!
17670 * Avoid memory leak in i2d_DHparams.
17674 * Allow the -k option to be used more than once in the enc program:
17675 this allows the same encrypted message to be read by multiple recipients.
17679 * New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
17680 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
17681 it will always use the numerical form of the OID, even if it has a short
17686 * Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
17687 method only got called if p,q,dmp1,dmq1,iqmp components were present,
17688 otherwise bn_mod_exp was called. In the case of hardware keys for example
17689 no private key components need be present and it might store extra data
17690 in the RSA structure, which cannot be accessed from bn_mod_exp.
17691 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
17692 private key operations.
17696 * Added support for SPARC Linux.
17700 * pem_password_cb function type incompatibly changed from
17701 typedef int pem_password_cb(char *buf, int size, int rwflag);
17703 ....(char *buf, int size, int rwflag, void *userdata);
17704 so that applications can pass data to their callbacks:
17705 The `PEM[_ASN1]_{read,write}...` functions and macros now take an
17706 additional void * argument, which is just handed through whenever
17707 the password callback is called.
17709 *Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller*
17711 New function SSL_CTX_set_default_passwd_cb_userdata.
17713 Compatibility note: As many C implementations push function arguments
17714 onto the stack in reverse order, the new library version is likely to
17715 interoperate with programs that have been compiled with the old
17716 pem_password_cb definition (PEM_whatever takes some data that
17717 happens to be on the stack as its last argument, and the callback
17718 just ignores this garbage); but there is no guarantee whatsoever that
17721 * The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
17722 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
17723 problems not only on Windows, but also on some Unix platforms.
17724 To avoid problematic command lines, these definitions are now in an
17725 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
17726 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
17730 * MIPS III/IV assembler module is reimplemented.
17734 * More DES library cleanups: remove references to srand/rand and
17735 delete an unused file.
17739 * Add support for the free Netwide assembler (NASM) under Win32,
17740 since not many people have MASM (ml) and it can be hard to obtain.
17741 This is currently experimental but it seems to work OK and pass all
17742 the tests. Check out INSTALL.W32 for info.
17746 * Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
17747 without temporary keys kept an extra copy of the server key,
17748 and connections with temporary keys did not free everything in case
17753 * New function RSA_check_key and new openssl rsa option -check
17754 for verifying the consistency of RSA keys.
17756 *Ulf Moeller, Bodo Moeller*
17758 * Various changes to make Win32 compile work:
17759 1. Casts to avoid "loss of data" warnings in p5_crpt2.c
17760 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
17761 comparison" warnings.
17762 3. Add `sk_<TYPE>_sort` to DEF file generator and do make update.
17766 * Add a debugging option to PKCS#5 v2 key generation function: when
17767 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
17768 derived keys are printed to stderr.
17772 * Copy the flags in ASN1_STRING_dup().
17774 *Roman E. Pavlov <pre@mo.msk.ru>*
17776 * The x509 application mishandled signing requests containing DSA
17777 keys when the signing key was also DSA and the parameters didn't match.
17779 It was supposed to omit the parameters when they matched the signing key:
17780 the verifying software was then supposed to automatically use the CA's
17781 parameters if they were absent from the end user certificate.
17783 Omitting parameters is no longer recommended. The test was also
17784 the wrong way round! This was probably due to unusual behaviour in
17785 EVP_cmp_parameters() which returns 1 if the parameters match.
17786 This meant that parameters were omitted when they *didn't* match and
17787 the certificate was useless. Certificates signed with 'ca' didn't have
17790 *Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>*
17792 * Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
17793 The interface is as follows:
17794 Applications can use
17795 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
17796 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
17797 "off" is now the default.
17798 The library internally uses
17799 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
17800 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
17801 to disable memory-checking temporarily.
17803 Some inconsistent states that previously were possible (and were
17804 even the default) are now avoided.
17806 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
17807 with each memory chunk allocated; this is occasionally more helpful
17808 than just having a counter.
17810 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
17812 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
17817 * Introduce "mode" for SSL structures (with defaults in SSL_CTX),
17818 which largely parallels "options", but is for changing API behaviour,
17819 whereas "options" are about protocol behaviour.
17820 Initial "mode" flags are:
17822 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when
17823 a single record has been written.
17824 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write
17825 retries use the same buffer location.
17826 (But all of the contents must be
17831 * Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options
17834 * Fix problems with no-hmac etc.
17836 *Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>*
17838 * New functions RSA_get_default_method(), RSA_set_method() and
17839 RSA_get_method(). These allows replacement of RSA_METHODs without having
17840 to mess around with the internals of an RSA structure.
17844 * Fix memory leaks in DSA_do_sign and DSA_is_prime.
17845 Also really enable memory leak checks in openssl.c and in some
17848 *Chad C. Mulligan, Bodo Moeller*
17850 * Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
17851 up the length of negative integers. This has now been simplified to just
17852 store the length when it is first determined and use it later, rather
17853 than trying to keep track of where data is copied and updating it to
17855 *Steve Henson, reported by Brien Wheeler <bwheeler@authentica-security.com>*
17857 * Add a new function PKCS7_signatureVerify. This allows the verification
17858 of a PKCS#7 signature but with the signing certificate passed to the
17859 function itself. This contrasts with PKCS7_dataVerify which assumes the
17860 certificate is present in the PKCS#7 structure. This isn't always the
17861 case: certificates can be omitted from a PKCS#7 structure and be
17862 distributed by "out of band" means (such as a certificate database).
17866 * Complete the `PEM_*` macros with DECLARE_PEM versions to replace the
17867 function prototypes in pem.h, also change util/mkdef.pl to add the
17868 necessary function names.
17872 * mk1mf.pl (used by Windows builds) did not properly read the
17873 options set by Configure in the top level Makefile, and Configure
17874 was not even able to write more than one option correctly.
17875 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
17879 * New functions CONF_load_bio() and CONF_load_fp() to allow a config
17880 file to be loaded from a BIO or FILE pointer. The BIO version will
17881 for example allow memory BIOs to contain config info.
17885 * New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
17886 Whoever hopes to achieve shared-library compatibility across versions
17887 must use this, not the compile-time macro.
17888 (Exercise 0.9.4: Which is the minimum library version required by
17890 Note: All this applies only to multi-threaded programs, others don't
17895 * Add missing case to s3_clnt.c state machine -- one of the new SSL tests
17896 through a BIO pair triggered the default case, i.e.
17897 SSLerr(...,SSL_R_UNKNOWN_STATE).
17901 * New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
17902 can use the SSL library even if none of the specific BIOs is
17907 * Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
17908 for the encoded length.
17910 *Jeon KyoungHo <khjeon@sds.samsung.co.kr>*
17912 * Add initial documentation of the X509V3 functions.
17916 * Add a new pair of functions PEM_write_PKCS8PrivateKey() and
17917 PEM_write_bio_PKCS8PrivateKey() that are equivalent to
17918 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
17919 secure PKCS#8 private key format with a high iteration count.
17923 * Fix determination of Perl interpreter: A perl or perl5
17924 *directory* in $PATH was also accepted as the interpreter.
17926 *Ralf S. Engelschall*
17928 * Fix demos/sign/sign.c: well there wasn't anything strictly speaking
17929 wrong with it but it was very old and did things like calling
17930 PEM_ASN1_read() directly and used MD5 for the hash not to mention some
17931 unusual formatting.
17935 * Fix demos/selfsign.c: it used obsolete and deleted functions, changed
17936 to use the new extension code.
17940 * Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
17941 with macros. This should make it easier to change their form, add extra
17942 arguments etc. Fix a few PEM prototypes which didn't have cipher as a
17947 * Add to configuration table a new entry that can specify an alternative
17948 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
17949 according to Mark Crispin <MRC@Panda.COM>.
17953 * DES CBC did not update the IV. Weird.
17957 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
17958 Changing the behaviour of the former might break existing programs --
17959 where IV updating is needed, des_ncbc_encrypt can be used.
17962 * When bntest is run from "make test" it drives bc to check its
17963 calculations, as well as internally checking them. If an internal check
17964 fails, it needs to cause bc to give a non-zero result or make test carries
17965 on without noticing the failure. Fixed.
17969 * DES library cleanups.
17973 * Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
17974 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
17975 ciphers. NOTE: although the key derivation function has been verified
17976 against some published test vectors it has not been extensively tested
17977 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
17982 * Instead of "mkdir -p", which is not fully portable, use new
17983 Perl script "util/mkdir-p.pl".
17987 * Rewrite the way password based encryption (PBE) is handled. It used to
17988 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
17989 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
17990 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
17991 the 'parameter' field of the AlgorithmIdentifier is passed to the
17992 underlying key generation function so it must do its own ASN1 parsing.
17993 This has also changed the EVP_PBE_CipherInit() function which now has a
17994 'parameter' argument instead of literal salt and iteration count values
17995 and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
17999 * Support for PKCS#5 v1.5 compatible password based encryption algorithms
18000 and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
18001 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
18002 KEY" because this clashed with PKCS#8 unencrypted string. Since this
18003 value was just used as a "magic string" and not used directly its
18004 value doesn't matter.
18008 * Introduce some semblance of const correctness to BN. Shame C doesn't
18013 * "linux-sparc64" configuration (ultrapenguin).
18015 *Ray Miller <ray.miller@oucs.ox.ac.uk>*
18016 "linux-sparc" configuration.
18018 *Christian Forster <fo@hawo.stw.uni-erlangen.de>*
18020 * config now generates no-xxx options for missing ciphers.
18024 * Support the EBCDIC character set (work in progress).
18025 File ebcdic.c not yet included because it has a different license.
18027 *Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>*
18029 * Support BS2000/OSD-POSIX.
18031 *Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>*
18033 * Make callbacks for key generation use `void *` instead of `char *`.
18037 * Make S/MIME samples compile (not yet tested).
18041 * Additional typesafe stacks.
18045 * New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
18049 ### Changes between 0.9.3 and 0.9.3a [29 May 1999]
18051 * New configuration variant "sco5-gcc".
18053 * Updated some demos.
18055 *Sean O Riordain, Wade Scholine*
18057 * Add missing BIO_free at exit of pkcs12 application.
18061 * Fix memory leak in conf.c.
18065 * Updates for Win32 to assembler version of MD5.
18069 * Set #! path to perl in `apps/der_chop` to where we found it
18070 instead of using a fixed path.
18074 * SHA library changes for irix64-mips4-cc.
18078 * Improvements for VMS support.
18082 ### Changes between 0.9.2b and 0.9.3 [24 May 1999]
18084 * Bignum library bug fix. IRIX 6 passes "make test" now!
18085 This also avoids the problems with SC4.2 and unpatched SC5.
18087 *Andy Polyakov <appro@fy.chalmers.se>*
18089 * New functions sk_num, sk_value and sk_set to replace the previous macros.
18090 These are required because of the typesafe stack would otherwise break
18091 existing code. If old code used a structure member which used to be STACK
18092 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
18093 sk_num or sk_value it would produce an error because the num, data members
18094 are not present in STACK_OF. Now it just produces a warning. sk_set
18095 replaces the old method of assigning a value to sk_value
18096 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
18097 that does this will no longer work (and should use sk_set instead) but
18098 this could be regarded as a "questionable" behaviour anyway.
18102 * Fix most of the other PKCS#7 bugs. The "experimental" code can now
18103 correctly handle encrypted S/MIME data.
18107 * Change type of various DES function arguments from des_cblock
18108 (which means, in function argument declarations, pointer to char)
18109 to des_cblock * (meaning pointer to array with 8 char elements),
18110 which allows the compiler to do more typechecking; it was like
18111 that back in SSLeay, but with lots of ugly casts.
18113 Introduce new type const_des_cblock.
18117 * Reorganise the PKCS#7 library and get rid of some of the more obvious
18118 problems: find RecipientInfo structure that matches recipient certificate
18119 and initialise the ASN1 structures properly based on passed cipher.
18123 * Belatedly make the BN tests actually check the results.
18127 * Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
18128 to and from BNs: it was completely broken. New compilation option
18129 NEG_PUBKEY_BUG to allow for some broken certificates that encode public
18130 key elements as negative integers.
18134 * Reorganize and speed up MD5.
18136 *Andy Polyakov <appro@fy.chalmers.se>*
18140 *Richard Levitte <richard@levitte.org>*
18142 * New option -out to asn1parse to allow the parsed structure to be
18143 output to a file. This is most useful when combined with the -strparse
18144 option to examine the output of things like OCTET STRINGS.
18148 * Make SSL library a little more fool-proof by not requiring any longer
18149 that `SSL_set_{accept,connect}_state` be called before
18150 `SSL_{accept,connect}` may be used (`SSL_set_..._state` is omitted
18151 in many applications because usually everything *appeared* to work as
18152 intended anyway -- now it really works as intended).
18156 * Move openssl.cnf out of lib/.
18160 * Fix various things to let OpenSSL even pass "egcc -pipe -O2 -Wall
18161 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
18162 -Wmissing-declarations -Wnested-externs -Winline" with EGCS 1.1.2+
18164 *Ralf S. Engelschall*
18166 * Various fixes to the EVP and PKCS#7 code. It may now be able to
18167 handle PKCS#7 enveloped data properly.
18169 *Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve*
18171 * Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
18172 copying pointers. The cert_st handling is changed by this in
18173 various ways (and thus what used to be known as ctx->default_cert
18174 is now called ctx->cert, since we don't resort to `s->ctx->[default_]cert`
18175 any longer when s->cert does not give us what we need).
18176 ssl_cert_instantiate becomes obsolete by this change.
18177 As soon as we've got the new code right (possibly it already is?),
18178 we have solved a couple of bugs of the earlier code where s->cert
18179 was used as if it could not have been shared with other SSL structures.
18181 Note that using the SSL API in certain dirty ways now will result
18182 in different behaviour than observed with earlier library versions:
18183 Changing settings for an `SSL_CTX *ctx` after having done s = SSL_new(ctx)
18184 does not influence s as it used to.
18186 In order to clean up things more thoroughly, inside SSL_SESSION
18187 we don't use CERT any longer, but a new structure SESS_CERT
18188 that holds per-session data (if available); currently, this is
18189 the peer's certificate chain and, for clients, the server's certificate
18190 and temporary key. CERT holds only those values that can have
18191 meaningful defaults in an SSL_CTX.
18195 * New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
18196 from the internal representation. Various PKCS#7 fixes: remove some
18197 evil casts and set the enc_dig_alg field properly based on the signing
18202 * Allow PKCS#12 password to be set from the command line or the
18203 environment. Let 'ca' get its config file name from the environment
18204 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
18209 * Allow certificate policies extension to use an IA5STRING for the
18210 organization field. This is contrary to the PKIX definition but
18211 VeriSign uses it and IE5 only recognises this form. Document 'x509'
18216 * Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
18217 without disallowing inline assembler and the like for non-pedantic builds.
18221 * Support Borland C++ builder.
18223 *Janez Jere <jj@void.si>, modified by Ulf Möller*
18229 * SHA-1 cleanups and performance enhancements.
18231 *Andy Polyakov <appro@fy.chalmers.se>*
18233 * Sparc v8plus assembler for the bignum library.
18235 *Andy Polyakov <appro@fy.chalmers.se>*
18237 * Accept any -xxx and +xxx compiler options in Configure.
18241 * Update HPUX configuration.
18245 * Add missing `sk_<type>_unshift()` function to safestack.h
18247 *Ralf S. Engelschall*
18249 * New function SSL_CTX_use_certificate_chain_file that sets the
18250 "extra_cert"s in addition to the certificate. (This makes sense
18251 only for "PEM" format files, as chains as a whole are not
18256 * Support verify_depth from the SSL API.
18257 x509_vfy.c had what can be considered an off-by-one-error:
18258 Its depth (which was not part of the external interface)
18259 was actually counting the number of certificates in a chain;
18260 now it really counts the depth.
18264 * Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
18265 instead of X509err, which often resulted in confusing error
18266 messages since the error codes are not globally unique
18267 (e.g. an alleged error in ssl3_accept when a certificate
18268 didn't match the private key).
18270 * New function SSL_CTX_set_session_id_context that allows to set a default
18271 value (so that you don't need SSL_set_session_id_context for each
18272 connection using the SSL_CTX).
18276 * OAEP decoding bug fix.
18280 * Support INSTALL_PREFIX for package builders, as proposed by
18285 * New Configure options "threads" and "no-threads". For systems
18286 where the proper compiler options are known (currently Solaris
18287 and Linux), "threads" is the default.
18291 * New script util/mklink.pl as a faster substitute for util/mklink.sh.
18295 * Install various scripts to $(OPENSSLDIR)/misc, not to
18296 $(INSTALLTOP)/bin -- they shouldn't clutter directories
18297 such as /usr/local/bin.
18301 * "make linux-shared" to build shared libraries.
18303 *Niels Poppe <niels@netbox.org>*
18305 * New Configure option `no-<cipher>` (rsa, idea, rc5, ...).
18309 * Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
18310 extension adding in x509 utility.
18314 * Remove NOPROTO sections and error code comments.
18318 * Partial rewrite of the DEF file generator to now parse the ANSI
18323 * New Configure options --prefix=DIR and --openssldir=DIR.
18327 * Complete rewrite of the error code script(s). It is all now handled
18328 by one script at the top level which handles error code gathering,
18329 header rewriting and C source file generation. It should be much better
18330 than the old method: it now uses a modified version of Ulf's parser to
18331 read the ANSI prototypes in all header files (thus the old K&R definitions
18332 aren't needed for error creation any more) and do a better job of
18333 translating function codes into names. The old 'ASN1 error code embedded
18334 in a comment' is no longer necessary and it doesn't use .err files which
18335 have now been deleted. Also the error code call doesn't have to appear all
18336 on one line (which resulted in some large lines...).
18340 * Change #include filenames from `<foo.h>` to `<openssl/foo.h>`.
18344 * Change behaviour of ssl2_read when facing length-0 packets: Don't return
18345 0 (which usually indicates a closed connection), but continue reading.
18349 * Fix some race conditions.
18353 * Add support for CRL distribution points extension. Add Certificate
18354 Policies and CRL distribution points documentation.
18358 * Move the autogenerated header file parts to crypto/opensslconf.h.
18362 * Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
18363 8 of keying material. Merlin has also confirmed interop with this fix
18364 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
18366 *Merlin Hughes <merlin@baltimore.ie>*
18368 * Fix lots of warnings.
18370 *Richard Levitte <levitte@stacken.kth.se>*
18372 * In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
18373 the directory spec didn't end with a LIST_SEPARATOR_CHAR.
18375 *Richard Levitte <levitte@stacken.kth.se>*
18377 * Fix problems with sizeof(long) == 8.
18379 *Andy Polyakov <appro@fy.chalmers.se>*
18381 * Change functions to ANSI C.
18385 * Fix typos in error codes.
18387 *Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller*
18389 * Remove defunct assembler files from Configure.
18393 * SPARC v8 assembler BIGNUM implementation.
18395 *Andy Polyakov <appro@fy.chalmers.se>*
18397 * Support for Certificate Policies extension: both print and set.
18398 Various additions to support the r2i method this uses.
18402 * A lot of constification, and fix a bug in X509_NAME_oneline() that could
18403 return a const string when you are expecting an allocated buffer.
18407 * Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
18408 types DirectoryString and DisplayText.
18412 * Add code to allow r2i extensions to access the configuration database,
18413 add an LHASH database driver and add several ctx helper functions.
18417 * Fix an evil bug in bn_expand2() which caused various BN functions to
18418 fail when they extended the size of a BIGNUM.
18422 * Various utility functions to handle SXNet extension. Modify mkdef.pl to
18423 support typesafe stack.
18427 * Fix typo in SSL_[gs]et_options().
18429 *Nils Frostberg <nils@medcom.se>*
18431 * Delete various functions and files that belonged to the (now obsolete)
18432 old X509V3 handling code.
18436 * New Configure option "rsaref".
18440 * Don't auto-generate pem.h.
18444 * Introduce type-safe ASN.1 SETs.
18448 * Convert various additional casted stacks to type-safe STACK_OF() variants.
18450 *Ben Laurie, Ralf S. Engelschall, Steve Henson*
18452 * Introduce type-safe STACKs. This will almost certainly break lots of code
18453 that links with OpenSSL (well at least cause lots of warnings), but fear
18454 not: the conversion is trivial, and it eliminates loads of evil casts. A
18455 few STACKed things have been converted already. Feel free to convert more.
18456 In the fullness of time, I'll do away with the STACK type altogether.
18460 * Add `openssl ca -revoke <certfile>` facility which revokes a certificate
18461 specified in `<certfile>` by updating the entry in the index.txt file.
18462 This way one no longer has to edit the index.txt file manually for
18463 revoking a certificate. The -revoke option does the gory details now.
18465 *Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall*
18467 * Fix `openssl crl -noout -text` combination where `-noout` killed the
18468 `-text` option at all and this way the `-noout -text` combination was
18469 inconsistent in `openssl crl` with the friends in `openssl x509|rsa|dsa`.
18471 *Ralf S. Engelschall*
18473 * Make sure a corresponding plain text error message exists for the
18474 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
18475 verify callback function determined that a certificate was revoked.
18477 *Ralf S. Engelschall*
18479 * Bugfix: In test/testenc, don't test `openssl <cipher>` for
18480 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test
18481 all available ciphers including rc5, which was forgotten until now.
18482 In order to let the testing shell script know which algorithms
18483 are available, a new (up to now undocumented) command
18484 `openssl list-cipher-commands` is used.
18488 * Bugfix: s_client occasionally would sleep in select() when
18489 it should have checked SSL_pending() first.
18493 * New functions DSA_do_sign and DSA_do_verify to provide access to
18494 the raw DSA values prior to ASN.1 encoding.
18498 * Tweaks to Configure
18500 *Niels Poppe <niels@netbox.org>*
18502 * Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
18507 * New variables $(RANLIB) and $(PERL) in the Makefiles.
18511 * New config option to avoid instructions that are illegal on the 80386.
18512 The default code is faster, but requires at least a 486.
18516 * Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
18517 SSL2_SERVER_VERSION (not used at all) macros, which are now the
18518 same as SSL2_VERSION anyway.
18522 * New "-showcerts" option for s_client.
18526 * Still more PKCS#12 integration. Add pkcs12 application to openssl
18527 application. Various cleanups and fixes.
18531 * More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
18532 modify error routines to work internally. Add error codes and PBE init
18533 to library startup routines.
18537 * Further PKCS#12 integration. Added password based encryption, PKCS#8 and
18538 packing functions to asn1 and evp. Changed function names and error
18539 codes along the way.
18543 * PKCS12 integration: and so it begins... First of several patches to
18544 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
18545 objects to objects.h
18549 * Add a new 'indent' option to some X509V3 extension code. Initial ASN1
18550 and display support for Thawte strong extranet extension.
18554 * Add LinuxPPC support.
18556 *Jeff Dubrule <igor@pobox.org>*
18558 * Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
18559 bn_div_words in alpha.s.
18561 *Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie*
18563 * Make sure the RSA OAEP test is skipped under -DRSAref because
18564 OAEP isn't supported when OpenSSL is built with RSAref.
18566 *Ulf Moeller <ulf@fitug.de>*
18568 * Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
18569 so they no longer are missing under -DNOPROTO.
18571 *Soren S. Jorvang <soren@t.dk>*
18573 ### Changes between 0.9.1c and 0.9.2b [22 Mar 1999]
18575 * Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
18576 doesn't work when the session is reused. Coming soon!
18580 * Fix a security hole, that allows sessions to be reused in the wrong
18581 context thus bypassing client cert protection! All software that uses
18582 client certs and session caches in multiple contexts NEEDS PATCHING to
18583 allow session reuse! A fuller solution is in the works.
18585 *Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)*
18587 * Some more source tree cleanups (removed obsolete files
18588 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
18589 permission on "config" script to be executable) and a fix for the INSTALL
18592 *Ulf Moeller <ulf@fitug.de>*
18594 * Remove some legacy and erroneous uses of malloc, free instead of
18597 *Lennart Bang <lob@netstream.se>, with minor changes by Steve*
18599 * Make rsa_oaep_test return non-zero on error.
18601 *Ulf Moeller <ulf@fitug.de>*
18603 * Add support for native Solaris shared libraries. Configure
18604 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
18605 if someone would make that last step automatic.
18607 *Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>*
18609 * ctx_size was not built with the right compiler during "make links". Fixed.
18613 * Change the meaning of 'ALL' in the cipher list. It now means "everything
18614 except NULL ciphers". This means the default cipher list will no longer
18615 enable NULL ciphers. They need to be specifically enabled e.g. with
18616 the string "DEFAULT:eNULL".
18620 * Fix to RSA private encryption routines: if p < q then it would
18621 occasionally produce an invalid result. This will only happen with
18622 externally generated keys because OpenSSL (and SSLeay) ensure p > q.
18626 * Be less restrictive and allow also `perl util/perlpath.pl
18627 /path/to/bin/perl` in addition to `perl util/perlpath.pl /path/to/bin`,
18628 because this way one can also use an interpreter named `perl5` (which is
18629 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
18630 installed as `perl`).
18632 *Matthias Loepfe <Matthias.Loepfe@adnovum.ch>*
18634 * Let util/clean-depend.pl work also with older Perl 5.00x versions.
18636 *Matthias Loepfe <Matthias.Loepfe@adnovum.ch>*
18638 * Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
18639 advapi32.lib to Win32 build and change the pem test comparison
18640 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
18641 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
18642 and crypto/des/ede_cbcm_enc.c.
18646 * DES quad checksum was broken on big-endian architectures. Fixed.
18650 * Comment out two functions in bio.h that aren't implemented. Fix up the
18651 Win32 test batch file so it (might) work again. The Win32 test batch file
18652 is horrible: I feel ill....
18656 * Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
18657 in e_os.h. Audit of header files to check ANSI and non ANSI
18658 sections: 10 functions were absent from non ANSI section and not exported
18659 from Windows DLLs. Fixed up libeay.num for new functions.
18663 * Make `openssl version` output lines consistent.
18665 *Ralf S. Engelschall*
18667 * Fix Win32 symbol export lists for BIO functions: Added
18668 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
18669 to ms/libeay{16,32}.def.
18671 *Ralf S. Engelschall*
18673 * Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
18674 fine under Unix and passes some trivial tests I've now added. But the
18675 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
18676 added to make sure no one expects that this stuff really works in the
18677 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources
18678 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
18681 *Ralf S. Engelschall*
18683 * Fix the generation of two part addresses in perl.
18685 *Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie*
18687 * Add config entry for Linux on MIPS.
18689 *John Tobey <jtobey@channel1.com>*
18691 * Make links whenever Configure is run, unless we are on Windoze.
18695 * Permit extensions to be added to CRLs using crl_section in openssl.cnf.
18696 Currently only issuerAltName and AuthorityKeyIdentifier make any sense
18701 * Add a useful kludge to allow package maintainers to specify compiler and
18702 other platforms details on the command line without having to patch the
18703 Configure script every time: One now can use
18704 `perl Configure <id>:<details>`,
18705 i.e. platform ids are allowed to have details appended
18706 to them (separated by colons). This is treated as there would be a static
18707 pre-configured entry in Configure's %table under key `<id>` with value
18708 `<details>` and `perl Configure <id>` is called. So, when you want to
18709 perform a quick test-compile under FreeBSD 3.1 with pgcc and without
18710 assembler stuff you can use `perl Configure "FreeBSD-elf:pgcc:-O6:::"`
18711 now, which overrides the FreeBSD-elf entry on-the-fly.
18713 *Ralf S. Engelschall*
18715 * Disable new TLS1 ciphersuites by default: they aren't official yet.
18719 * Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
18720 on the `perl Configure ...` command line. This way one can compile
18721 OpenSSL libraries with Position Independent Code (PIC) which is needed
18722 for linking it into DSOs.
18724 *Ralf S. Engelschall*
18726 * Remarkably, export ciphers were totally broken and no-one had noticed!
18731 * Cleaned up the LICENSE document: The official contact for any license
18732 questions now is the OpenSSL core team under openssl-core@openssl.org.
18733 And add a paragraph about the dual-license situation to make sure people
18734 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
18735 to the OpenSSL toolkit.
18737 *Ralf S. Engelschall*
18739 * General source tree makefile cleanups: Made `making xxx in yyy...`
18740 display consistent in the source tree and replaced `/bin/rm` by `rm`.
18741 Additionally cleaned up the `make links` target: Remove unnecessary
18742 semicolons, subsequent redundant removes, inline point.sh into mklink.sh
18743 to speed processing and no longer clutter the display with confusing
18744 stuff. Instead only the actually done links are displayed.
18746 *Ralf S. Engelschall*
18748 * Permit null encryption ciphersuites, used for authentication only. It used
18749 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
18750 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
18755 * Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
18756 signed attributes when verifying signatures (this would break them),
18757 the detached data encoding was wrong and public keys obtained using
18758 X509_get_pubkey() weren't freed.
18762 * Add text documentation for the BUFFER functions. Also added a work around
18763 to a Win95 console bug. This was triggered by the password read stuff: the
18764 last character typed gets carried over to the next fread(). If you were
18765 generating a new cert request using 'req' for example then the last
18766 character of the passphrase would be CR which would then enter the first
18771 * Added the new 'Includes OpenSSL Cryptography Software' button as
18772 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
18773 button and can be used by applications based on OpenSSL to show the
18774 relationship to the OpenSSL project.
18776 *Ralf S. Engelschall*
18778 * Remove confusing variables in function signatures in files
18779 ssl/ssl_lib.c and ssl/ssl.h.
18781 *Lennart Bong <lob@kulthea.stacken.kth.se>*
18783 * Don't install bss_file.c under PREFIX/include/
18785 *Lennart Bong <lob@kulthea.stacken.kth.se>*
18787 * Get the Win32 compile working again. Modify mkdef.pl so it can handle
18788 functions that return function pointers and has support for NT specific
18789 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
18790 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
18791 unsigned to signed types: this was killing the Win32 compile.
18795 * Add new certificate file to stack functions,
18796 SSL_add_dir_cert_subjects_to_stack() and
18797 SSL_add_file_cert_subjects_to_stack(). These largely supplant
18798 SSL_load_client_CA_file(), and can be used to add multiple certs easily
18799 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
18800 This means that Apache-SSL and similar packages don't have to mess around
18801 to add as many CAs as they want to the preferred list.
18805 * Experiment with doxygen documentation. Currently only partially applied to
18807 See <http://www.stack.nl/~dimitri/doxygen/index.html>, and run doxygen with
18808 openssl.doxy as the configuration file.
18812 * Get rid of remaining C++-style comments which strict C compilers hate.
18814 *Ralf S. Engelschall, pointed out by Carlos Amengual*
18816 * Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
18817 compiled in by default: it has problems with large keys.
18821 * Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
18822 DH private keys and/or callback functions which directly correspond to
18823 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
18824 is needed for applications which have to configure certificates on a
18825 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
18827 For the RSA certificate situation is makes no difference, but
18828 for the DSA certificate situation this fixes the "no shared cipher"
18829 problem where the OpenSSL cipher selection procedure failed because the
18830 temporary keys were not overtaken from the context and the API provided
18831 no way to reconfigure them.
18832 The new functions now let applications reconfigure the stuff and they
18833 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
18834 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new
18835 non-public-API function ssl_cert_instantiate() is used as a helper
18836 function and also to reduce code redundancy inside ssl_rsa.c.
18838 *Ralf S. Engelschall*
18840 * Move s_server -dcert and -dkey options out of the undocumented feature
18841 area because they are useful for the DSA situation and should be
18842 recognized by the users.
18844 *Ralf S. Engelschall*
18846 * Fix the cipher decision scheme for export ciphers: the export bits are
18847 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
18848 SSL_EXP_MASK. So, the original variable has to be used instead of the
18849 already masked variable.
18851 *Richard Levitte <levitte@stacken.kth.se>*
18853 * Fix `port` variable from `int` to `unsigned int` in crypto/bio/b_sock.c
18855 *Richard Levitte <levitte@stacken.kth.se>*
18857 * Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
18858 from `int` to `unsigned int` because it is a length and initialized by
18859 EVP_DigestFinal() which expects an `unsigned int *`.
18861 *Richard Levitte <levitte@stacken.kth.se>*
18863 * Don't hard-code path to Perl interpreter on shebang line of Configure
18864 script. Instead use the usual Shell->Perl transition trick.
18866 *Ralf S. Engelschall*
18868 * Make `openssl x509 -noout -modulus`' functional also for DSA certificates
18869 (in addition to RSA certificates) to match the behaviour of `openssl dsa
18870 -noout -modulus` as it's already the case for `openssl rsa -noout
18871 -modulus`. For RSA the -modulus is the real "modulus" while for DSA
18872 currently the public key is printed (a decision which was already done by
18873 `openssl dsa -modulus` in the past) which serves a similar purpose.
18874 Additionally the NO_RSA no longer completely removes the whole -modulus
18875 option; it now only avoids using the RSA stuff. Same applies to NO_DSA
18878 *Ralf S. Engelschall*
18880 * Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
18881 BIO. See the source (crypto/evp/bio_ok.c) for more info.
18883 *Arne Ansper <arne@ats.cyber.ee>*
18885 * Dump the old yucky req code that tried (and failed) to allow raw OIDs
18886 to be added. Now both 'req' and 'ca' can use new objects defined in the
18891 * Add cool BIO that does syslog (or event log on NT).
18893 *Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie*
18895 * Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
18896 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
18897 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
18898 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
18902 * Add preliminary config info for new extension code.
18906 * Make RSA_NO_PADDING really use no padding.
18908 *Ulf Moeller <ulf@fitug.de>*
18910 * Generate errors when private/public key check is done.
18914 * Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
18915 for some CRL extensions and new objects added.
18919 * Really fix the ASN1 IMPLICIT bug this time... Partial support for private
18920 key usage extension and fuller support for authority key id.
18924 * Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
18925 padding method for RSA, which is recommended for new applications in PKCS
18926 #1 v2.0 (RFC 2437, October 1998).
18927 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
18928 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
18929 against Bleichbacher's attack on RSA.
18930 *Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
18933 * Updates to the new SSL compression code
18935 *Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)*
18937 * Fix so that the version number in the master secret, when passed
18938 via RSA, checks that if TLS was proposed, but we roll back to SSLv3
18939 (because the server will not accept higher), that the version number
18940 is 0x03,0x01, not 0x03,0x00
18942 *Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)*
18944 * Run extensive memory leak checks on SSL commands. Fixed *lots* of memory
18945 leaks in `ssl/` relating to new `X509_get_pubkey()` behaviour. Also fixes
18946 in `apps/` and an unrelated leak in `crypto/dsa/dsa_vrf.c`.
18950 * Support for RAW extensions where an arbitrary extension can be
18951 created by including its DER encoding. See `apps/openssl.cnf` for
18956 * Make sure latest Perl versions don't interpret some generated C array
18957 code as Perl array code in the crypto/err/err_genc.pl script.
18959 *Lars Weber <3weber@informatik.uni-hamburg.de>*
18961 * Modify ms/do_ms.bat to not generate assembly language makefiles since
18962 not many people have the assembler. Various Win32 compilation fixes and
18963 update to the INSTALL.W32 file with (hopefully) more accurate Win32
18964 build instructions.
18968 * Modify configure script 'Configure' to automatically create crypto/date.h
18969 file under Win32 and also build pem.h from pem.org. New script
18970 util/mkfiles.pl to create the MINFO file on environments that can't do a
18971 'make files': perl util/mkfiles.pl >MINFO should work.
18975 * Major rework of DES function declarations, in the pursuit of correctness
18976 and purity. As a result, many evil casts evaporated, and some weirdness,
18977 too. You may find this causes warnings in your code. Zapping your evil
18978 casts will probably fix them. Mostly.
18982 * Fix for a typo in asn1.h. Bug fix to object creation script
18983 obj_dat.pl. It considered a zero in an object definition to mean
18984 "end of object": none of the objects in objects.h have any zeros
18985 so it wasn't spotted.
18987 *Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>*
18989 * Add support for Triple DES Cipher Block Chaining with Output Feedback
18990 Masking (CBCM). In the absence of test vectors, the best I have been able
18991 to do is check that the decrypt undoes the encrypt, so far. Send me test
18992 vectors if you have them.
18996 * Correct calculation of key length for export ciphers (too much space was
18997 allocated for null ciphers). This has not been tested!
19001 * Modifications to the mkdef.pl for Win32 DEF file creation. The usage
19002 message is now correct (it understands "crypto" and "ssl" on its
19003 command line). There is also now an "update" option. This will update
19004 the util/ssleay.num and util/libeay.num files with any new functions.
19006 perl util/mkdef.pl crypto ssl update
19007 it will update them.
19011 * Overhauled the Perl interface:
19012 - ported BN stuff to OpenSSL's different BN library
19013 - made the perl/ source tree CVS-aware
19014 - renamed the package from SSLeay to OpenSSL (the files still contain
19015 their history because I've copied them in the repository)
19016 - removed obsolete files (the test scripts will be replaced
19017 by better Test::Harness variants in the future)
19019 *Ralf S. Engelschall*
19021 * First cut for a very conservative source tree cleanup:
19022 1. merge various obsolete readme texts into doc/ssleay.txt
19023 where we collect the old documents and readme texts.
19024 2. remove the first part of files where I'm already sure that we no
19025 longer need them because of three reasons: either they are just temporary
19026 files which were left by Eric or they are preserved original files where
19027 I've verified that the diff is also available in the CVS via "cvs diff
19028 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
19029 the crypto/md/ stuff).
19031 *Ralf S. Engelschall*
19033 * More extension code. Incomplete support for subject and issuer alt
19034 name, issuer and authority key id. Change the i2v function parameters
19035 and add an extra 'crl' parameter in the X509V3_CTX structure: guess
19036 what that's for :-) Fix to ASN1 macro which messed up
19037 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
19041 * Preliminary support for ENUMERATED type. This is largely copied from the
19046 * Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
19048 *Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)*
19050 * Make sure `make rehash` target really finds the `openssl` program.
19052 *Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>*
19054 * Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
19055 like to hear about it if this slows down other processors.
19059 * Add CygWin32 platform information to Configure script.
19061 *Alan Batie <batie@aahz.jf.intel.com>*
19063 * Fixed ms/32all.bat script: `no_asm` -> `no-asm`
19065 *Rainer W. Gerling <gerling@mpg-gv.mpg.de>*
19067 * New program nseq to manipulate netscape certificate sequences
19071 * Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
19076 * Fixes to BN code. Previously the default was to define BN_RECURSION
19077 but the BN code had some problems that would cause failures when
19078 doing certificate verification and some other functions.
19080 *Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)*
19082 * Add ASN1 and PEM code to support netscape certificate sequences.
19086 * Add ASN1 and PEM code to support netscape certificate sequences.
19090 * Add several PKIX and private extended key usage OIDs.
19094 * Modify the 'ca' program to handle the new extension code. Modify
19095 openssl.cnf for new extension format, add comments.
19099 * More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
19100 and add a sample to openssl.cnf so req -x509 now adds appropriate
19105 * Continued X509 V3 changes. Add to other makefiles, integrate with the
19106 error code, add initial support to X509_print() and x509 application.
19110 * Takes a deep breath and start adding X509 V3 extension support code. Add
19111 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
19112 stuff is currently isolated and isn't even compiled yet.
19116 * Continuing patches for GeneralizedTime. Fix up certificate and CRL
19117 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
19118 Removed the versions check from X509 routines when loading extensions:
19119 this allows certain broken certificates that don't set the version
19120 properly to be processed.
19124 * Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
19125 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
19126 can still be regenerated with "make depend".
19130 * Spelling mistake in C version of CAST-128.
19132 *Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>*
19134 * Changes to the error generation code. The perl script err-code.pl
19135 now reads in the old error codes and retains the old numbers, only
19136 adding new ones if necessary. It also only changes the .err files if new
19137 codes are added. The makefiles have been modified to only insert errors
19138 when needed (to avoid needlessly modifying header files). This is done
19139 by only inserting errors if the .err file is newer than the auto generated
19140 C file. To rebuild all the error codes from scratch (the old behaviour)
19141 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
19142 or delete all the .err files.
19146 * CAST-128 was incorrectly implemented for short keys. The C version has
19147 been fixed, but is untested. The assembler versions are also fixed, but
19148 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
19149 to regenerate it if needed.
19150 *Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
19151 Hagino <itojun@kame.net>*
19153 * File was opened incorrectly in randfile.c.
19155 *Ulf Möller <ulf@fitug.de>*
19157 * Beginning of support for GeneralizedTime. d2i, i2d, check and print
19158 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
19159 GeneralizedTime. ASN1_TIME is the proper type used in certificates et
19160 al: it's just almost always a UTCTime. Note this patch adds new error
19161 codes so do a "make errors" if there are problems.
19165 * Correct Linux 1 recognition in config.
19167 *Ulf Möller <ulf@fitug.de>*
19169 * Remove pointless MD5 hash when using DSA keys in ca.
19171 *Anonymous <nobody@replay.com>*
19173 * Generate an error if given an empty string as a cert directory. Also
19174 generate an error if handed NULL (previously returned 0 to indicate an
19175 error, but didn't set one).
19177 *Ben Laurie, reported by Anonymous <nobody@replay.com>*
19179 * Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
19183 * Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
19184 parameters. This was causing a warning which killed off the Win32 compile.
19188 * Remove C++ style comments from crypto/bn/bn_local.h.
19190 *Neil Costigan <neil.costigan@celocom.com>*
19192 * The function OBJ_txt2nid was broken. It was supposed to return a nid
19193 based on a text string, looking up short and long names and finally
19194 "dot" format. The "dot" format stuff didn't work. Added new function
19195 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
19196 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
19197 OID is not part of the table.
19201 * Add prototypes to X509 lookup/verify methods, fixing a bug in
19202 X509_LOOKUP_by_alias().
19206 * Sort openssl functions by name.
19210 * Get the `gendsa` command working and add it to the `list` command. Remove
19211 encryption from sample DSA keys (in case anyone is interested the password
19216 * Make *all* `*_free` functions accept a NULL pointer.
19218 *Frans Heymans <fheymans@isaserver.be>*
19220 * If a DH key is generated in s3_srvr.c, don't blow it by trying to use
19223 *Anonymous <nobody@replay.com>*
19225 * s_server should send the CAfile as acceptable CAs, not its own cert.
19227 *Bodo Moeller <3moeller@informatik.uni-hamburg.de>*
19229 * Don't blow it for numeric `-newkey` arguments to `apps/req`.
19231 *Bodo Moeller <3moeller@informatik.uni-hamburg.de>*
19233 * Temp key "for export" tests were wrong in s3_srvr.c.
19235 *Anonymous <nobody@replay.com>*
19237 * Add prototype for temp key callback functions
19238 SSL_CTX_set_tmp_{rsa,dh}_callback().
19242 * Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
19243 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
19247 * X509_name_add_entry() freed the wrong thing after an error.
19249 *Arne Ansper <arne@ats.cyber.ee>*
19251 * rsa_eay.c would attempt to free a NULL context.
19253 *Arne Ansper <arne@ats.cyber.ee>*
19255 * BIO_s_socket() had a broken should_retry() on Windoze.
19257 *Arne Ansper <arne@ats.cyber.ee>*
19259 * BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
19261 *Arne Ansper <arne@ats.cyber.ee>*
19263 * Make sure the already existing X509_STORE->depth variable is initialized
19264 in X509_STORE_new(), but document the fact that this variable is still
19265 unused in the certificate verification process.
19267 *Ralf S. Engelschall*
19269 * Fix the various library and `apps/` files to free up pkeys obtained from
19270 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
19274 * Fix reference counting in X509_PUBKEY_get(). This makes
19275 demos/maurice/example2.c work, amongst others, probably.
19277 *Steve Henson and Ben Laurie*
19279 * First cut of a cleanup for `apps/`. First the `ssleay` program is now named
19280 `openssl` and second, the shortcut symlinks for the `openssl <command>`
19281 are no longer created. This way we have a single and consistent command
19282 line interface `openssl <command>`, similar to `cvs <command>`.
19284 *Ralf S. Engelschall, Paul Sutton and Ben Laurie*
19286 * ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
19287 BIT STRING wrapper always have zero unused bits.
19291 * Add CA.pl, perl version of CA.sh, add extended key usage OID.
19295 * Make the top-level INSTALL documentation easier to understand.
19299 * Makefiles updated to exit if an error occurs in a sub-directory
19300 make (including if user presses ^C) [Paul Sutton]
19302 * Make Montgomery context stuff explicit in RSA data structure.
19306 * Fix build order of pem and err to allow for generated pem.h.
19310 * Fix renumbering bug in X509_NAME_delete_entry().
19314 * Enhanced the err-ins.pl script so it makes the error library number
19315 global and can add a library name. This is needed for external ASN1 and
19316 other error libraries.
19320 * Fixed sk_insert which never worked properly.
19324 * Fix ASN1 macros so they can handle indefinite length constructed
19325 EXPLICIT tags. Some non standard certificates use these: they can now
19330 * Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
19331 into a single doc/ssleay.txt bundle. This way the information is still
19332 preserved but no longer messes up this directory. Now it's new room for
19333 the new set of documentation files.
19335 *Ralf S. Engelschall*
19337 * SETs were incorrectly DER encoded. This was a major pain, because they
19338 shared code with SEQUENCEs, which aren't coded the same. This means that
19339 almost everything to do with SETs or SEQUENCEs has either changed name or
19340 number of arguments.
19342 *Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>*
19344 * Fix test data to work with the above.
19348 * Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
19349 was already fixed by Eric for 0.9.1 it seems.
19351 *Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>*
19353 * Autodetect FreeBSD3.
19357 * Fix various bugs in Configure. This affects the following platforms:
19361 unixware-2.0-pentium
19366 * Eliminate generated files from CVS. Reorder tests to regenerate files
19367 before they are needed.
19371 * Generate Makefile.ssl from Makefile.org (to keep CVS happy).
19375 ### Changes between 0.9.1b and 0.9.1c [23-Dec-1998]
19377 * Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
19378 changed SSLeay to OpenSSL in version strings.
19380 *Ralf S. Engelschall*
19382 * Some fixups to the top-level documents.
19386 * Fixed the nasty bug where rsaref.h was not found under compile-time
19387 because the symlink to include/ was missing.
19389 *Ralf S. Engelschall*
19391 * Incorporated the popular no-RSA/DSA-only patches
19392 which allow to compile a RSA-free SSLeay.
19394 *Andrew Cooke / Interrader Ldt., Ralf S. Engelschall*
19396 * Fixed nasty rehash problem under `make -f Makefile.ssl links`
19397 when "ssleay" is still not found.
19399 *Ralf S. Engelschall*
19401 * Added more platforms to Configure: Cray T3E, HPUX 11,
19403 *Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>*
19405 * Updated the README file.
19407 *Ralf S. Engelschall*
19409 * Added various .cvsignore files in the CVS repository subdirs
19410 to make a "cvs update" really silent.
19412 *Ralf S. Engelschall*
19414 * Recompiled the error-definition header files and added
19415 missing symbols to the Win32 linker tables.
19417 *Ralf S. Engelschall*
19419 * Cleaned up the top-level documents;
19420 o new files: CHANGES and LICENSE
19421 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
19422 o merged COPYRIGHT into LICENSE
19423 o removed obsolete TODO file
19424 o renamed MICROSOFT to INSTALL.W32
19426 *Ralf S. Engelschall*
19428 * Removed dummy files from the 0.9.1b source tree:
19429 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
19430 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
19431 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
19432 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
19433 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
19435 *Ralf S. Engelschall*
19437 * Added various platform portability fixes.
19441 * The Genesis of the OpenSSL rpject:
19442 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
19443 Young and Tim J. Hudson created while they were working for C2Net until
19446 *The OpenSSL Project*
19448 ### Changes between 0.9.0b and 0.9.1b [not released]
19450 * Updated a few CA certificates under certs/
19454 * Changed some BIGNUM api stuff.
19458 * Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
19459 DGUX x86, Linux Alpha, etc.
19463 * New COMP library [crypto/comp/] for SSL Record Layer Compression:
19464 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
19469 * Add -strparse option to asn1pars program which parses nested
19472 *Dr Stephen Henson <shenson@bigfoot.com>*
19474 * Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
19478 * DSA fix for "ca" program.
19482 * Added "-genkey" option to "dsaparam" program.
19486 * Added RIPE MD160 (rmd160) message digest.
19490 * Added -a (all) option to "ssleay version" command.
19494 * Added PLATFORM define which is the id given to Configure.
19498 * Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
19502 * Extended the ASN.1 parser routines.
19506 * Extended BIO routines to support REUSEADDR, seek, tell, etc.
19510 * Added a BN_CTX to the BN library.
19514 * Fixed the weak key values in DES library
19518 * Changed API in EVP library for cipher aliases.
19522 * Added support for RC2/64bit cipher.
19526 * Converted the lhash library to the crypto/mem.c functions.
19530 * Added more recognized ASN.1 object ids.
19534 * Added more RSA padding checks for SSL/TLS.
19538 * Added BIO proxy/filter functionality.
19542 * Added extra_certs to SSL_CTX which can be used
19543 send extra CA certificates to the client in the CA cert chain sending
19544 process. It can be configured with SSL_CTX_add_extra_chain_cert().
19548 * Now Fortezza is denied in the authentication phase because
19549 this is key exchange mechanism is not supported by SSLeay at all.
19553 * Additional PKCS1 checks.
19557 * Support the string "TLSv1" for all TLS v1 ciphers.
19561 * Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
19562 ex_data index of the SSL context in the X509_STORE_CTX ex_data.
19566 * Fixed a few memory leaks.
19570 * Fixed various code and comment typos.
19574 * A minor bug in ssl/s3_clnt.c where there would always be 4 0
19575 bytes sent in the client random.
19577 *Edward Bishop <ebishop@spyglass.com>*
19581 [CVE-2020-1971]: https://www.openssl.org/news/vulnerabilities.html#CVE-2020-1971
19582 [CVE-2020-1967]: https://www.openssl.org/news/vulnerabilities.html#CVE-2020-1967
19583 [CVE-2019-1563]: https://www.openssl.org/news/vulnerabilities.html#CVE-2019-1563
19584 [CVE-2019-1559]: https://www.openssl.org/news/vulnerabilities.html#CVE-2019-1559
19585 [CVE-2019-1552]: https://www.openssl.org/news/vulnerabilities.html#CVE-2019-1552
19586 [CVE-2019-1551]: https://www.openssl.org/news/vulnerabilities.html#CVE-2019-1551
19587 [CVE-2019-1549]: https://www.openssl.org/news/vulnerabilities.html#CVE-2019-1549
19588 [CVE-2019-1547]: https://www.openssl.org/news/vulnerabilities.html#CVE-2019-1547
19589 [CVE-2019-1543]: https://www.openssl.org/news/vulnerabilities.html#CVE-2019-1543
19590 [CVE-2018-5407]: https://www.openssl.org/news/vulnerabilities.html#CVE-2018-5407
19591 [CVE-2018-0739]: https://www.openssl.org/news/vulnerabilities.html#CVE-2018-0739
19592 [CVE-2018-0737]: https://www.openssl.org/news/vulnerabilities.html#CVE-2018-0737
19593 [CVE-2018-0735]: https://www.openssl.org/news/vulnerabilities.html#CVE-2018-0735
19594 [CVE-2018-0734]: https://www.openssl.org/news/vulnerabilities.html#CVE-2018-0734
19595 [CVE-2018-0733]: https://www.openssl.org/news/vulnerabilities.html#CVE-2018-0733
19596 [CVE-2018-0732]: https://www.openssl.org/news/vulnerabilities.html#CVE-2018-0732
19597 [CVE-2017-3738]: https://www.openssl.org/news/vulnerabilities.html#CVE-2017-3738
19598 [CVE-2017-3737]: https://www.openssl.org/news/vulnerabilities.html#CVE-2017-3737
19599 [CVE-2017-3736]: https://www.openssl.org/news/vulnerabilities.html#CVE-2017-3736
19600 [CVE-2017-3735]: https://www.openssl.org/news/vulnerabilities.html#CVE-2017-3735
19601 [CVE-2017-3733]: https://www.openssl.org/news/vulnerabilities.html#CVE-2017-3733
19602 [CVE-2017-3732]: https://www.openssl.org/news/vulnerabilities.html#CVE-2017-3732
19603 [CVE-2017-3731]: https://www.openssl.org/news/vulnerabilities.html#CVE-2017-3731
19604 [CVE-2017-3730]: https://www.openssl.org/news/vulnerabilities.html#CVE-2017-3730
19605 [CVE-2016-7055]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-7055
19606 [CVE-2016-7054]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-7054
19607 [CVE-2016-7053]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-7053
19608 [CVE-2016-7052]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-7052
19609 [CVE-2016-6309]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-6309
19610 [CVE-2016-6308]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-6308
19611 [CVE-2016-6307]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-6307
19612 [CVE-2016-6306]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-6306
19613 [CVE-2016-6305]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-6305
19614 [CVE-2016-6304]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-6304
19615 [CVE-2016-6303]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-6303
19616 [CVE-2016-6302]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-6302
19617 [CVE-2016-2183]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2183
19618 [CVE-2016-2182]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2182
19619 [CVE-2016-2181]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2181
19620 [CVE-2016-2180]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2180
19621 [CVE-2016-2179]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2179
19622 [CVE-2016-2178]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2178
19623 [CVE-2016-2177]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2177
19624 [CVE-2016-2176]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2176
19625 [CVE-2016-2109]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2109
19626 [CVE-2016-2107]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2107
19627 [CVE-2016-2106]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2106
19628 [CVE-2016-2105]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2105
19629 [CVE-2016-0800]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-0800
19630 [CVE-2016-0799]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-0799
19631 [CVE-2016-0798]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-0798
19632 [CVE-2016-0797]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-0797
19633 [CVE-2016-0705]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-0705
19634 [CVE-2016-0702]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-0702
19635 [CVE-2016-0701]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-0701
19636 [CVE-2015-3197]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-3197
19637 [CVE-2015-3196]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-3196
19638 [CVE-2015-3195]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-3195
19639 [CVE-2015-3194]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-3194
19640 [CVE-2015-3193]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-3193
19641 [CVE-2015-1793]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-1793
19642 [CVE-2015-1792]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-1792
19643 [CVE-2015-1791]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-1791
19644 [CVE-2015-1790]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-1790
19645 [CVE-2015-1789]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-1789
19646 [CVE-2015-1788]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-1788
19647 [CVE-2015-1787]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-1787
19648 [CVE-2015-0293]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0293
19649 [CVE-2015-0291]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0291
19650 [CVE-2015-0290]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0290
19651 [CVE-2015-0289]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0289
19652 [CVE-2015-0288]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0288
19653 [CVE-2015-0287]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0287
19654 [CVE-2015-0286]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0286
19655 [CVE-2015-0285]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0285
19656 [CVE-2015-0209]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0209
19657 [CVE-2015-0208]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0208
19658 [CVE-2015-0207]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0207
19659 [CVE-2015-0206]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0206
19660 [CVE-2015-0205]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0205
19661 [CVE-2015-0204]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0204
19662 [CVE-2014-8275]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-8275
19663 [CVE-2014-5139]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-5139
19664 [CVE-2014-3572]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3572
19665 [CVE-2014-3571]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3571
19666 [CVE-2014-3570]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3570
19667 [CVE-2014-3569]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3569
19668 [CVE-2014-3568]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3568
19669 [CVE-2014-3567]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3567
19670 [CVE-2014-3566]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3566
19671 [CVE-2014-3513]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3513
19672 [CVE-2014-3512]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3512
19673 [CVE-2014-3511]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3511
19674 [CVE-2014-3510]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3510
19675 [CVE-2014-3509]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3509
19676 [CVE-2014-3508]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3508
19677 [CVE-2014-3507]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3507
19678 [CVE-2014-3506]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3506
19679 [CVE-2014-3505]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3505
19680 [CVE-2014-3470]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3470
19681 [CVE-2014-0224]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-0224
19682 [CVE-2014-0221]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-0221
19683 [CVE-2014-0195]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-0195
19684 [CVE-2014-0160]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-0160
19685 [CVE-2014-0076]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-0076
19686 [CVE-2013-6450]: https://www.openssl.org/news/vulnerabilities.html#CVE-2013-6450
19687 [CVE-2013-4353]: https://www.openssl.org/news/vulnerabilities.html#CVE-2013-4353
19688 [CVE-2013-0169]: https://www.openssl.org/news/vulnerabilities.html#CVE-2013-0169
19689 [CVE-2013-0166]: https://www.openssl.org/news/vulnerabilities.html#CVE-2013-0166
19690 [CVE-2012-2686]: https://www.openssl.org/news/vulnerabilities.html#CVE-2012-2686
19691 [CVE-2012-2333]: https://www.openssl.org/news/vulnerabilities.html#CVE-2012-2333
19692 [CVE-2012-2110]: https://www.openssl.org/news/vulnerabilities.html#CVE-2012-2110
19693 [CVE-2012-0884]: https://www.openssl.org/news/vulnerabilities.html#CVE-2012-0884
19694 [CVE-2012-0050]: https://www.openssl.org/news/vulnerabilities.html#CVE-2012-0050
19695 [CVE-2012-0027]: https://www.openssl.org/news/vulnerabilities.html#CVE-2012-0027
19696 [CVE-2011-4619]: https://www.openssl.org/news/vulnerabilities.html#CVE-2011-4619
19697 [CVE-2011-4577]: https://www.openssl.org/news/vulnerabilities.html#CVE-2011-4577
19698 [CVE-2011-4576]: https://www.openssl.org/news/vulnerabilities.html#CVE-2011-4576
19699 [CVE-2011-4109]: https://www.openssl.org/news/vulnerabilities.html#CVE-2011-4109
19700 [CVE-2011-4108]: https://www.openssl.org/news/vulnerabilities.html#CVE-2011-4108
19701 [CVE-2011-3210]: https://www.openssl.org/news/vulnerabilities.html#CVE-2011-3210
19702 [CVE-2011-3207]: https://www.openssl.org/news/vulnerabilities.html#CVE-2011-3207
19703 [CVE-2011-0014]: https://www.openssl.org/news/vulnerabilities.html#CVE-2011-0014
19704 [CVE-2010-4252]: https://www.openssl.org/news/vulnerabilities.html#CVE-2010-4252
19705 [CVE-2010-4180]: https://www.openssl.org/news/vulnerabilities.html#CVE-2010-4180
19706 [CVE-2010-3864]: https://www.openssl.org/news/vulnerabilities.html#CVE-2010-3864
19707 [CVE-2010-1633]: https://www.openssl.org/news/vulnerabilities.html#CVE-2010-1633
19708 [CVE-2010-0740]: https://www.openssl.org/news/vulnerabilities.html#CVE-2010-0740
19709 [CVE-2010-0433]: https://www.openssl.org/news/vulnerabilities.html#CVE-2010-0433
19710 [CVE-2009-4355]: https://www.openssl.org/news/vulnerabilities.html#CVE-2009-4355
19711 [CVE-2009-3555]: https://www.openssl.org/news/vulnerabilities.html#CVE-2009-3555
19712 [CVE-2009-3245]: https://www.openssl.org/news/vulnerabilities.html#CVE-2009-3245
19713 [CVE-2009-1386]: https://www.openssl.org/news/vulnerabilities.html#CVE-2009-1386
19714 [CVE-2009-1379]: https://www.openssl.org/news/vulnerabilities.html#CVE-2009-1379
19715 [CVE-2009-1378]: https://www.openssl.org/news/vulnerabilities.html#CVE-2009-1378
19716 [CVE-2009-1377]: https://www.openssl.org/news/vulnerabilities.html#CVE-2009-1377
19717 [CVE-2009-0789]: https://www.openssl.org/news/vulnerabilities.html#CVE-2009-0789
19718 [CVE-2009-0591]: https://www.openssl.org/news/vulnerabilities.html#CVE-2009-0591
19719 [CVE-2009-0590]: https://www.openssl.org/news/vulnerabilities.html#CVE-2009-0590
19720 [CVE-2008-5077]: https://www.openssl.org/news/vulnerabilities.html#CVE-2008-5077
19721 [CVE-2008-1678]: https://www.openssl.org/news/vulnerabilities.html#CVE-2008-1678
19722 [CVE-2008-1672]: https://www.openssl.org/news/vulnerabilities.html#CVE-2008-1672
19723 [CVE-2008-0891]: https://www.openssl.org/news/vulnerabilities.html#CVE-2008-0891
19724 [CVE-2007-5135]: https://www.openssl.org/news/vulnerabilities.html#CVE-2007-5135
19725 [CVE-2007-4995]: https://www.openssl.org/news/vulnerabilities.html#CVE-2007-4995
19726 [CVE-2006-4343]: https://www.openssl.org/news/vulnerabilities.html#CVE-2006-4343
19727 [CVE-2006-4339]: https://www.openssl.org/news/vulnerabilities.html#CVE-2006-4339
19728 [CVE-2006-3738]: https://www.openssl.org/news/vulnerabilities.html#CVE-2006-3738
19729 [CVE-2006-2940]: https://www.openssl.org/news/vulnerabilities.html#CVE-2006-2940
19730 [CVE-2006-2937]: https://www.openssl.org/news/vulnerabilities.html#CVE-2006-2937
19731 [CVE-2005-2969]: https://www.openssl.org/news/vulnerabilities.html#CVE-2005-2969
19732 [CVE-2004-0112]: https://www.openssl.org/news/vulnerabilities.html#CVE-2004-0112
19733 [CVE-2004-0079]: https://www.openssl.org/news/vulnerabilities.html#CVE-2004-0079
19734 [CVE-2003-0851]: https://www.openssl.org/news/vulnerabilities.html#CVE-2003-0851
19735 [CVE-2003-0545]: https://www.openssl.org/news/vulnerabilities.html#CVE-2003-0545
19736 [CVE-2003-0544]: https://www.openssl.org/news/vulnerabilities.html#CVE-2003-0544
19737 [CVE-2003-0543]: https://www.openssl.org/news/vulnerabilities.html#CVE-2003-0543
19738 [CVE-2003-0078]: https://www.openssl.org/news/vulnerabilities.html#CVE-2003-0078
19739 [CVE-2002-0659]: https://www.openssl.org/news/vulnerabilities.html#CVE-2002-0659
19740 [CVE-2002-0657]: https://www.openssl.org/news/vulnerabilities.html#CVE-2002-0657
19741 [CVE-2002-0656]: https://www.openssl.org/news/vulnerabilities.html#CVE-2002-0656
19742 [CVE-2002-0655]: https://www.openssl.org/news/vulnerabilities.html#CVE-2002-0655