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 3.1](#openssl-31)
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 3.1 [xx XXX xxxx]
27 * Subject or issuer names in X.509 objects are now displayed as UTF-8 strings
35 For OpenSSL 3.0 a [Migration guide][] has been added, so the CHANGES entries
36 listed here are only a brief description.
37 The migration guide contains more detailed information related to new features,
38 breaking changes, and mappings for the large list of deprecated functions.
40 [Migration guide]: https://github.com/openssl/openssl/tree/master/doc/man7/migration_guide.pod
42 ### Changes between 1.1.1 and 3.0 [xx XXX xxxx]
44 * TLS_MAX_VERSION, DTLS_MAX_VERSION and DTLS_MIN_VERSION constants are now
49 * The `OPENSSL_s390xcap` environment variable can be used to set bits in the
50 S390X capability vector to zero. This simplifies testing of different code
51 paths on S390X architecture.
55 * Encrypting more than 2^64 TLS records with AES-GCM is disallowed
56 as per FIPS 140-2 IG A.5 "Key/IV Pair Uniqueness Requirements from
57 SP 800-38D". The communication will fail at this point.
61 * The EC_GROUP_clear_free() function is deprecated as there is nothing
62 confidential in EC_GROUP data.
66 * The byte order mark (BOM) character is ignored if encountered at the
67 beginning of a PEM-formatted file.
71 * Added CMS support for the Russian GOST algorithms.
75 * Due to move of the implementation of cryptographic operations
76 to the providers, validation of various operation parameters can
77 be postponed until the actual operation is executed where previously
78 it happened immediately when an operation parameter was set.
80 For example when setting an unsupported curve with
81 EVP_PKEY_CTX_set_ec_paramgen_curve_nid() this function call will not
82 fail but later keygen operations with the EVP_PKEY_CTX will fail.
84 *OpenSSL team members and many third party contributors*
86 * The EVP_get_cipherbyname() function will return NULL for algorithms such as
87 "AES-128-SIV", "AES-128-CBC-CTS" and "CAMELLIA-128-CBC-CTS" which were
88 previously only accessible via low level interfaces. Use EVP_CIPHER_fetch()
89 instead to retrieve these algorithms from a provider.
93 * On build targets where the multilib postfix is set in the build
94 configuration the libdir directory was changing based on whether
95 the lib directory with the multilib postfix exists on the system
96 or not. This unpredictable behavior was removed and eventual
97 multilib postfix is now always added to the default libdir. Use
98 `--libdir=lib` to override the libdir if adding the postfix is
103 * The triple DES key wrap functionality now conforms to RFC 3217 but is
104 no longer interoperable with OpenSSL 1.1.1.
108 * The ERR_GET_FUNC() function was removed. With the loss of meaningful
109 function codes, this function can only cause problems for calling
114 * Add a configurable flag to output date formats as ISO 8601. Does not
115 change the default date format.
119 * Version of MSVC earlier than 1300 could get link warnings, which could
120 be suppressed if the undocumented -DI_CAN_LIVE_WITH_LNK4049 was set.
121 Support for this flag has been removed.
125 * Rework and make DEBUG macros consistent. Remove unused -DCONF_DEBUG,
126 -DBN_CTX_DEBUG, and REF_PRINT. Add a new tracing category and use it for
127 printing reference counts. Rename -DDEBUG_UNUSED to -DUNUSED_RESULT_DEBUG
128 Fix BN_DEBUG_RAND so it compiles and, when set, force DEBUG_RAND to be set
129 also. Rename engine_debug_ref to be ENGINE_REF_PRINT also for consistency.
133 * The signatures of the functions to get and set options on SSL and
134 SSL_CTX objects changed from "unsigned long" to "uint64_t" type.
135 Some source code changes may be required.
139 * The public definitions of conf_method_st and conf_st have been
140 deprecated. They will be made opaque in a future release.
142 *Rich Salz and Tomáš Mráz*
144 * Client-initiated renegotiation is disabled by default. To allow it, use
145 the -client_renegotiation option, the SSL_OP_ALLOW_CLIENT_RENEGOTIATION
146 flag, or the "ClientRenegotiation" config parameter as appropriate.
150 * Add "abspath" and "includedir" pragma's to config files, to prevent,
151 or modify relative pathname inclusion.
155 * OpenSSL includes a cryptographic module that is intended to be FIPS 140-2
156 validated. Please consult the README-FIPS and
157 README-PROVIDERS files, as well as the migration guide.
159 *OpenSSL team members and many third party contributors*
161 * For the key types DH and DHX the allowed settable parameters are now different.
165 * The openssl commands that read keys, certificates, and CRLs now
166 automatically detect the PEM or DER format of the input files.
168 *David von Oheimb, Richard Levitte, and Tomáš Mráz*
170 * Added enhanced PKCS#12 APIs which accept a library context.
174 * The default manual page suffix ($MANSUFFIX) has been changed to "ossl"
178 * Added support for Kernel TLS (KTLS).
180 *Boris Pismenny, John Baldwin and Andrew Gallatin*
182 * Support for RFC 5746 secure renegotiation is now required by default for
183 SSL or TLS connections to succeed.
187 * The signature of the `copy` functional parameter of the
188 EVP_PKEY_meth_set_copy() function has changed so its `src` argument is
189 now `const EVP_PKEY_CTX *` instead of `EVP_PKEY_CTX *`. Similarly
190 the signature of the `pub_decode` functional parameter of the
191 EVP_PKEY_asn1_set_public() function has changed so its `pub` argument is
192 now `const X509_PUBKEY *` instead of `X509_PUBKEY *`.
196 * The error return values from some control calls (ctrl) have changed.
200 * A public key check is now performed during EVP_PKEY_derive_set_peer().
204 * Many functions in the EVP_ namespace that are getters of values from
205 implementations or contexts were renamed to include get or get0 in their
206 names. Old names are provided as macro aliases for compatibility and
211 * The EVP_PKEY_CTRL_PKCS7_ENCRYPT, EVP_PKEY_CTRL_PKCS7_DECRYPT,
212 EVP_PKEY_CTRL_PKCS7_SIGN, EVP_PKEY_CTRL_CMS_ENCRYPT,
213 EVP_PKEY_CTRL_CMS_DECRYPT, and EVP_PKEY_CTRL_CMS_SIGN control operations
218 * The EVP_PKEY_public_check() and EVP_PKEY_param_check() functions now work for
221 * The output from the command line applications may have minor
226 * The output from numerous "printing" may have minor changes.
230 * Windows thread synchronization uses read/write primitives (SRWLock) when
231 supported by the OS, otherwise CriticalSection continues to be used.
235 * Add filter BIO BIO_f_readbuffer() that allows BIO_tell() and BIO_seek() to
236 work on read only BIO source/sinks that do not support these functions.
237 This allows piping or redirection of a file BIO using stdin to be buffered
238 into memory. This is used internally in OSSL_DECODER_from_bio().
242 * OSSL_STORE_INFO_get_type() may now return an additional value. In 1.1.1
243 this function would return one of the values OSSL_STORE_INFO_NAME,
244 OSSL_STORE_INFO_PKEY, OSSL_STORE_INFO_PARAMS, OSSL_STORE_INFO_CERT or
245 OSSL_STORE_INFO_CRL. Decoded public keys would previously have been reported
246 as type OSSL_STORE_INFO_PKEY in 1.1.1. In 3.0 decoded public keys are now
247 reported as having the new type OSSL_STORE_INFO_PUBKEY. Applications
248 using this function should be amended to handle the changed return value.
252 * Improved adherence to Enhanced Security Services (ESS, RFC 2634 and RFC 5035)
253 for the TSP and CMS Advanced Electronic Signatures (CAdES) implementations.
254 As required by RFC 5035 check both ESSCertID and ESSCertIDv2 if both present.
255 Correct the semantics of checking the validation chain in case ESSCertID{,v2}
256 contains more than one certificate identifier: This means that all
257 certificates referenced there MUST be part of the validation chain.
261 * The implementation of older EVP ciphers related to CAST, IDEA, SEED, RC2, RC4,
262 RC5, DESX and DES have been moved to the legacy provider.
266 * The implementation of the EVP digests MD2, MD4, MDC2, WHIRLPOOL and
267 RIPEMD-160 have been moved to the legacy provider.
271 * The deprecated function EVP_PKEY_get0() now returns NULL being called for a
276 * The deprecated functions EVP_PKEY_get0_RSA(),
277 EVP_PKEY_get0_DSA(), EVP_PKEY_get0_EC_KEY(), EVP_PKEY_get0_DH(),
278 EVP_PKEY_get0_hmac(), EVP_PKEY_get0_poly1305() and EVP_PKEY_get0_siphash() as
279 well as the similarly named "get1" functions behave differently in
284 * A number of functions handling low-level keys or engines were deprecated
285 including EVP_PKEY_set1_engine(), EVP_PKEY_get0_engine(), EVP_PKEY_assign(),
286 EVP_PKEY_get0(), EVP_PKEY_get0_hmac(), EVP_PKEY_get0_poly1305() and
287 EVP_PKEY_get0_siphash().
291 * PKCS#5 PBKDF1 key derivation has been moved from PKCS5_PBE_keyivgen() into
292 the legacy crypto provider as an EVP_KDF. Applications requiring this KDF
293 will need to load the legacy crypto provider. This includes these PBE
294 algorithms which use this KDF:
295 - NID_pbeWithMD2AndDES_CBC
296 - NID_pbeWithMD5AndDES_CBC
297 - NID_pbeWithSHA1AndRC2_CBC
298 - NID_pbeWithMD2AndRC2_CBC
299 - NID_pbeWithMD5AndRC2_CBC
300 - NID_pbeWithSHA1AndDES_CBC
304 * Deprecated obsolete BIO_set_callback(), BIO_get_callback(), and
305 BIO_debug_callback() functions.
309 * Deprecated obsolete EVP_PKEY_CTX_get0_dh_kdf_ukm() and
310 EVP_PKEY_CTX_get0_ecdh_kdf_ukm() functions.
314 * The RAND_METHOD APIs have been deprecated.
318 * The SRP APIs have been deprecated.
322 * Add a compile time option to prevent the caching of provider fetched
323 algorithms. This is enabled by including the no-cached-fetch option
324 at configuration time.
328 * pkcs12 now uses defaults of PBKDF2, AES and SHA-256, with a MAC iteration
329 count of PKCS12_DEFAULT_ITER.
331 *Tomáš Mráz and Sahana Prasad*
333 * The openssl speed command does not use low-level API calls anymore.
337 * Parallel dual-prime 1024-bit modular exponentiation for AVX512_IFMA
340 *Ilya Albrekht, Sergey Kirillov, Andrey Matyukov (Intel Corp)*
342 * Combining the Configure options no-ec and no-dh no longer disables TLSv1.3.
346 * Implemented support for fully "pluggable" TLSv1.3 groups. This means that
347 providers may supply their own group implementations (using either the "key
348 exchange" or the "key encapsulation" methods) which will automatically be
349 detected and used by libssl.
351 *Matt Caswell, Nicola Tuveri*
353 * The undocumented function X509_certificate_type() has been deprecated;
357 * Deprecated the obsolete BN_pseudo_rand() and BN_pseudo_rand_range().
361 * Removed RSA padding mode for SSLv23 (which was only used for
362 SSLv2). This includes the functions RSA_padding_check_SSLv23() and
363 RSA_padding_add_SSLv23() and the `-ssl` option in the deprecated
368 * Deprecated the obsolete X9.31 RSA key generation related functions.
370 * While a callback function set via `SSL_CTX_set_cert_verify_callback()`
371 is not allowed to return a value > 1, this is no more taken as failure.
373 *Viktor Dukhovni and David von Oheimb*
375 * Deprecated the obsolete X9.31 RSA key generation related functions
376 BN_X931_generate_Xpq(), BN_X931_derive_prime_ex(), and
377 BN_X931_generate_prime_ex().
381 * The default key generation method for the regular 2-prime RSA keys was
382 changed to the FIPS 186-4 B.3.6 method.
386 * Deprecated the BN_is_prime_ex() and BN_is_prime_fasttest_ex() functions.
390 * Deprecated EVP_MD_CTX_set_update_fn() and EVP_MD_CTX_update_fn().
394 * Deprecated the type OCSP_REQ_CTX and the functions OCSP_REQ_CTX_*() and
395 replaced with OSSL_HTTP_REQ_CTX and the functions OSSL_HTTP_REQ_CTX_*().
397 *Rich Salz, Richard Levitte, and David von Oheimb*
399 * Deprecated `X509_http_nbio()` and `X509_CRL_http_nbio()`.
403 * Deprecated `OCSP_parse_url()`.
407 * Validation of SM2 keys has been separated from the validation of regular EC
412 * Behavior of the `pkey` app is changed, when using the `-check` or `-pubcheck`
413 switches: a validation failure triggers an early exit, returning a failure
414 exit status to the parent process.
418 * Changed behavior of SSL_CTX_set_ciphersuites() and SSL_set_ciphersuites()
419 to ignore unknown ciphers.
423 * The `-cipher-commands` and `-digest-commands` options
424 of the command line utility `list` have been deprecated.
425 Instead use the `-cipher-algorithms` and `-digest-algorithms` options.
429 * Added convenience functions for generating asymmetric key pairs:
430 The 'quick' one-shot (yet somewhat limited) function L<EVP_PKEY_Q_keygen(3)>
431 and macros for the most common cases: <EVP_RSA_gen(3)> and L<EVP_EC_gen(3)>.
435 * All of the low level EC_KEY functions have been deprecated.
437 *Shane Lontis, Paul Dale, Richard Levitte, and Tomáš Mráz*
439 * Deprecated all the libcrypto and libssl error string loading
444 * The functions SSL_CTX_set_tmp_dh_callback and SSL_set_tmp_dh_callback, as
445 well as the macros SSL_CTX_set_tmp_dh() and SSL_set_tmp_dh() have been
450 * The `-crypt` option to the `passwd` command line tool has been removed.
454 * The -C option to the `x509`, `dhparam`, `dsaparam`, and `ecparam` commands
459 * Add support for AES Key Wrap inverse ciphers to the EVP layer.
463 * Deprecated EVP_PKEY_set1_tls_encodedpoint() and
464 EVP_PKEY_get1_tls_encodedpoint().
468 * The security callback, which can be customised by application code, supports
469 the security operation SSL_SECOP_TMP_DH. One location of the "other" parameter
470 was incorrectly passing a DH object. It now passed an EVP_PKEY in all cases.
474 * Add PKCS7_get_octet_string() and PKCS7_type_is_other() to the public
475 interface. Their functionality remains unchanged.
479 * Added new option for 'openssl list', '-providers', which will display the
480 list of loaded providers, their names, version and status. It optionally
481 displays their gettable parameters.
485 * Removed EVP_PKEY_set_alias_type().
489 * Deprecated `EVP_PKEY_CTX_set_rsa_keygen_pubexp()` and introduced
490 `EVP_PKEY_CTX_set1_rsa_keygen_pubexp()`, which is now preferred.
494 * Changed all "STACK" functions to be macros instead of inline functions. Macro
495 parameters are still checked for type safety at compile time via helper
500 * Remove the RAND_DRBG API
502 *Paul Dale and Matthias St. Pierre*
504 * Allow `SSL_set1_host()` and `SSL_add1_host()` to take IP literal addresses
505 as well as actual hostnames.
509 * The 'MinProtocol' and 'MaxProtocol' configuration commands now silently
510 ignore TLS protocol version bounds when configuring DTLS-based contexts, and
511 conversely, silently ignore DTLS protocol version bounds when configuring
512 TLS-based contexts. The commands can be repeated to set bounds of both
513 types. The same applies with the corresponding "min_protocol" and
514 "max_protocol" command-line switches, in case some application uses both TLS
517 SSL_CTX instances that are created for a fixed protocol version (e.g.
518 `TLSv1_server_method()`) also silently ignore version bounds. Previously
519 attempts to apply bounds to these protocol versions would result in an
520 error. Now only the "version-flexible" SSL_CTX instances are subject to
521 limits in configuration files in command-line options.
525 * Deprecated the `ENGINE` API. Engines should be replaced with providers
530 * Reworked the recorded ERR codes to make better space for system errors.
531 To distinguish them, the macro `ERR_SYSTEM_ERROR()` indicates if the
532 given code is a system error (true) or an OpenSSL error (false).
536 * Reworked the test perl framework to better allow parallel testing.
538 *Nicola Tuveri and David von Oheimb*
540 * Added ciphertext stealing algorithms AES-128-CBC-CTS, AES-192-CBC-CTS and
541 AES-256-CBC-CTS to the providers. CS1, CS2 and CS3 variants are supported.
545 * 'Configure' has been changed to figure out the configuration target if
546 none is given on the command line. Consequently, the 'config' script is
547 now only a mere wrapper. All documentation is changed to only mention
550 *Rich Salz and Richard Levitte*
552 * Added a library context `OSSL_LIB_CTX` that applications as well as
553 other libraries can use to form a separate context within which
554 libcrypto operations are performed.
558 * Added various `_ex` functions to the OpenSSL API that support using
559 a non-default `OSSL_LIB_CTX`.
563 * Handshake now fails if Extended Master Secret extension is dropped
568 * Dropped interactive mode from the `openssl` program.
572 * Deprecated `EVP_PKEY_cmp()` and `EVP_PKEY_cmp_parameters()`.
574 *David von Oheimb and Shane Lontis*
576 * Deprecated `EC_METHOD_get_field_type()`.
580 * Deprecated EC_GFp_simple_method(), EC_GFp_mont_method(),
581 EC_GF2m_simple_method(), EC_GFp_nist_method(), EC_GFp_nistp224_method()
582 EC_GFp_nistp256_method(), and EC_GFp_nistp521_method().
586 * Deprecated EC_GROUP_new(), EC_GROUP_method_of(), and EC_POINT_method_of().
590 * Add CAdES-BES signature verification support, mostly derived
591 from ESSCertIDv2 TS (RFC 5816) contribution by Marek Klein.
593 *Filipe Raimundo da Silva*
595 * Add CAdES-BES signature scheme and attributes support (RFC 5126) to CMS API.
599 * Added the AuthEnvelopedData content type structure (RFC 5083) with AES-GCM
600 parameter (RFC 5084) for the Cryptographic Message Syntax (CMS).
604 * Deprecated EC_POINT_make_affine() and EC_POINTs_make_affine().
608 * Deprecated EC_GROUP_precompute_mult(), EC_GROUP_have_precompute_mult(), and
609 EC_KEY_precompute_mult().
613 * Deprecated EC_POINTs_mul().
617 * Removed FIPS_mode() and FIPS_mode_set().
621 * The SSL option SSL_OP_IGNORE_UNEXPECTED_EOF is introduced.
625 * Deprecated EC_POINT_set_Jprojective_coordinates_GFp() and
626 EC_POINT_get_Jprojective_coordinates_GFp().
630 * Added OSSL_PARAM_BLD to the public interface. This allows OSSL_PARAM
631 arrays to be more easily constructed via a series of utility functions.
632 Create a parameter builder using OSSL_PARAM_BLD_new(), add parameters using
633 the various push functions and finally convert to a passable OSSL_PARAM
634 array using OSSL_PARAM_BLD_to_param().
638 * The security strength of SHA1 and MD5 based signatures in TLS has been
643 * Added EVP_PKEY_set_type_by_keymgmt(), to initialise an EVP_PKEY to
644 contain a provider side internal key.
648 * ASN1_verify(), ASN1_digest() and ASN1_sign() have been deprecated.
652 * Project text documents not yet having a proper file name extension
653 (`HACKING`, `LICENSE`, `NOTES*`, `README*`, `VERSION`) have been renamed to
654 `*.md` as far as reasonable, else `*.txt`, for better use with file managers.
658 * The main project documents (README, NEWS, CHANGES, INSTALL, SUPPORT)
659 have been converted to Markdown with the goal to produce documents
660 which not only look pretty when viewed online in the browser, but
661 remain well readable inside a plain text editor.
663 To achieve this goal, a 'minimalistic' Markdown style has been applied
664 which avoids formatting elements that interfere too much with the
665 reading flow in the text file. For example, it
667 * avoids [ATX headings][] and uses [setext headings][] instead
668 (which works for `<h1>` and `<h2>` headings only).
669 * avoids [inline links][] and uses [reference links][] instead.
670 * avoids [fenced code blocks][] and uses [indented code blocks][] instead.
672 [ATX headings]: https://github.github.com/gfm/#atx-headings
673 [setext headings]: https://github.github.com/gfm/#setext-headings
674 [inline links]: https://github.github.com/gfm/#inline-link
675 [reference links]: https://github.github.com/gfm/#reference-link
676 [fenced code blocks]: https://github.github.com/gfm/#fenced-code-blocks
677 [indented code blocks]: https://github.github.com/gfm/#indented-code-blocks
679 *Matthias St. Pierre*
681 * The test suite is changed to preserve results of each test recipe.
682 A new directory test-runs/ with subdirectories named like the
683 test recipes are created in the build tree for this purpose.
687 * Added an implementation of CMP and CRMF (RFC 4210, RFC 4211 RFC 6712).
688 This adds `crypto/cmp/`, `crpyto/crmf/`, `apps/cmp.c`, and `test/cmp_*`.
689 See L<openssl-cmp(1)> and L<OSSL_CMP_exec_IR_ses(3)> as starting points.
691 *David von Oheimb, Martin Peylo*
693 * Generalized the HTTP client code from `crypto/ocsp/` into `crpyto/http/`.
694 It supports arbitrary request and response content types, GET redirection,
695 TLS, connections via HTTP(S) proxies, connections and exchange via
696 user-defined BIOs (allowing implicit connections), persistent connections,
697 and timeout checks. See L<OSSL_HTTP_transfer(3)> etc. for details.
698 The legacy OCSP-focused (and only partly documented) API
699 is retained for backward compatibility, while most of it is deprecated.
703 * Added `util/check-format.pl`, a tool for checking adherence to the
704 OpenSSL coding style <https://www.openssl.org/policies/codingstyle.html>.
705 The checks performed are incomplete and yield some false positives.
706 Still the tool should be useful for detecting most typical glitches.
710 * `BIO_do_connect()` and `BIO_do_handshake()` have been extended:
711 If domain name resolution yields multiple IP addresses all of them are tried
712 after `connect()` failures.
716 * All of the low level RSA functions have been deprecated.
720 * X509 certificates signed using SHA1 are no longer allowed at security
725 * The command line utilities dhparam, dsa, gendsa and dsaparam have been
726 modified to use PKEY APIs. These commands are now in maintenance mode
727 and no new features will be added to them.
731 * The command line utility rsautl has been deprecated.
735 * The command line utilities genrsa and rsa have been modified to use PKEY
736 APIs. They now write PKCS#8 keys by default. These commands are now in
737 maintenance mode and no new features will be added to them.
741 * All of the low level DH functions have been deprecated.
743 *Paul Dale and Matt Caswell*
745 * All of the low level DSA functions have been deprecated.
749 * Reworked the treatment of EC EVP_PKEYs with the SM2 curve to
750 automatically become EVP_PKEY_SM2 rather than EVP_PKEY_EC.
754 * Deprecated low level ECDH and ECDSA functions.
758 * Deprecated EVP_PKEY_decrypt_old() and EVP_PKEY_encrypt_old().
762 * Enhanced the documentation of EVP_PKEY_get_size(), EVP_PKEY_get_bits()
763 and EVP_PKEY_get_security_bits(). Especially EVP_PKEY_get_size() needed
764 a new formulation to include all the things it can be used for,
765 as well as words of caution.
769 * The SSL_CTX_set_tlsext_ticket_key_cb(3) function has been deprecated.
773 * All of the low level HMAC functions have been deprecated.
775 *Paul Dale and David von Oheimb*
777 * Over two thousand fixes were made to the documentation, including:
778 - Common options (such as -rand/-writerand, TLS version control, etc)
779 were refactored and point to newly-enhanced descriptions in openssl.pod.
780 - Added style conformance for all options (with help from Richard Levitte),
781 documented all reported missing options, added a CI build to check
782 that all options are documented and that no unimplemented options
784 - Documented some internals, such as all use of environment variables.
785 - Addressed all internal broken L<> references.
789 * All of the low level CMAC functions have been deprecated.
793 * The low-level MD2, MD4, MD5, MDC2, RIPEMD160 and Whirlpool digest
794 functions have been deprecated.
796 *Paul Dale and David von Oheimb*
798 * Corrected the documentation of the return values from the `EVP_DigestSign*`
799 set of functions. The documentation mentioned negative values for some
800 errors, but this was never the case, so the mention of negative values
803 Code that followed the documentation and thereby check with something
804 like `EVP_DigestSignInit(...) <= 0` will continue to work undisturbed.
808 * All of the low level cipher functions have been deprecated.
810 *Matt Caswell and Paul Dale*
812 * Removed include/openssl/opensslconf.h.in and replaced it with
813 include/openssl/configuration.h.in, which differs in not including
814 <openssl/macros.h>. A short header include/openssl/opensslconf.h
815 was added to include both.
817 This allows internal hacks where one might need to modify the set
818 of configured macros, for example this if deprecated symbols are
819 still supposed to be available internally:
821 #include <openssl/configuration.h>
823 #undef OPENSSL_NO_DEPRECATED
824 #define OPENSSL_SUPPRESS_DEPRECATED
826 #include <openssl/macros.h>
828 This should not be used by applications that use the exported
829 symbols, as that will lead to linking errors.
833 * Fixed an overflow bug in the x64_64 Montgomery squaring procedure
834 used in exponentiation with 512-bit moduli. No EC algorithms are
835 affected. Analysis suggests that attacks against 2-prime RSA1024,
836 3-prime RSA1536, and DSA1024 as a result of this defect would be very
837 difficult to perform and are not believed likely. Attacks against DH512
838 are considered just feasible. However, for an attack the target would
839 have to re-use the DH512 private key, which is not recommended anyway.
840 Also applications directly using the low-level API BN_mod_exp may be
841 affected if they use BN_FLG_CONSTTIME.
846 * Most memory-debug features have been deprecated, and the functionality
847 replaced with no-ops.
851 * Added documentation for the STACK API.
855 * Introduced a new method type and API, OSSL_ENCODER, to represent
856 generic encoders. These do the same sort of job that PEM writers
857 and d2i functions do, but with support for methods supplied by
858 providers, and the possibility for providers to support other
863 * Introduced a new method type and API, OSSL_DECODER, to represent
864 generic decoders. These do the same sort of job that PEM readers
865 and i2d functions do, but with support for methods supplied by
866 providers, and the possibility for providers to support other
871 * Added a .pragma directive to the syntax of configuration files, to
872 allow varying behavior in a supported and predictable manner.
873 Currently added pragma:
877 This allows dollar signs to be a keyword character unless it's
878 followed by a opening brace or parenthesis. This is useful for
879 platforms where dollar signs are commonly used in names, such as
880 volume names and system directory names on VMS.
884 * Added functionality to create an EVP_PKEY from user data.
888 * Change the interpretation of the '--api' configuration option to
889 mean that this is a desired API compatibility level with no
890 further meaning. The previous interpretation, that this would
891 also mean to remove all deprecated symbols up to and including
892 the given version, no requires that 'no-deprecated' is also used
893 in the configuration.
895 When building applications, the desired API compatibility level
896 can be set with the OPENSSL_API_COMPAT macro like before. For
897 API compatibility version below 3.0, the old style numerical
898 value is valid as before, such as -DOPENSSL_API_COMPAT=0x10100000L.
899 For version 3.0 and on, the value is expected to be the decimal
900 value calculated from the major and minor version like this:
902 MAJOR * 10000 + MINOR * 100
906 -DOPENSSL_API_COMPAT=30000 For 3.0
907 -DOPENSSL_API_COMPAT=30200 For 3.2
909 To hide declarations that are deprecated up to and including the
910 given API compatibility level, -DOPENSSL_NO_DEPRECATED must be
911 given when building the application as well.
915 * Added the X509_LOOKUP_METHOD called X509_LOOKUP_store, to allow
916 access to certificate and CRL stores via URIs and OSSL_STORE
919 This adds the following functions:
921 - X509_LOOKUP_store()
922 - X509_STORE_load_file()
923 - X509_STORE_load_path()
924 - X509_STORE_load_store()
925 - SSL_add_store_cert_subjects_to_stack()
926 - SSL_CTX_set_default_verify_store()
927 - SSL_CTX_load_verify_file()
928 - SSL_CTX_load_verify_dir()
929 - SSL_CTX_load_verify_store()
933 * Added a new method to gather entropy on VMS, based on SYS$GET_ENTROPY.
934 The presence of this system service is determined at run-time.
938 * Added functionality to create an EVP_PKEY context based on data
939 for methods from providers. This takes an algorithm name and a
940 property query string and simply stores them, with the intent
941 that any operation that uses this context will use those strings
942 to fetch the needed methods implicitly, thereby making the port
943 of application written for pre-3.0 OpenSSL easier.
947 * The undocumented function NCONF_WIN32() has been deprecated; for
948 conversion details see the HISTORY section of doc/man5/config.pod
952 * Introduced the new functions EVP_DigestSignInit_ex() and
953 EVP_DigestVerifyInit_ex(). The macros EVP_DigestSignUpdate() and
954 EVP_DigestVerifyUpdate() have been converted to functions. See the man
955 pages for further details.
959 * Over two thousand fixes were made to the documentation, including:
960 adding missing command flags, better style conformance, documentation
963 *Rich Salz, Richard Levitte*
965 * s390x assembly pack: add hardware-support for P-256, P-384, P-521,
966 X25519, X448, Ed25519 and Ed448.
970 * Print all values for a PKCS#12 attribute with 'openssl pkcs12', not just
975 * Deprecated the public definition of `ERR_STATE` as well as the function
976 `ERR_get_state()`. This is done in preparation of making `ERR_STATE` an
981 * Added ERR functionality to give callers access to the stored function
982 names that have replaced the older function code based functions.
984 New functions are ERR_peek_error_func(), ERR_peek_last_error_func(),
985 ERR_peek_error_data(), ERR_peek_last_error_data(), ERR_get_error_all(),
986 ERR_peek_error_all() and ERR_peek_last_error_all().
988 Deprecate ERR functions ERR_get_error_line(), ERR_get_error_line_data(),
989 ERR_peek_error_line_data(), ERR_peek_last_error_line_data() and
990 ERR_func_error_string().
994 * Extended testing to be verbose for failing tests only. The make variables
995 VERBOSE_FAILURE or VF can be used to enable this:
997 $ make VF=1 test # Unix
998 $ mms /macro=(VF=1) test ! OpenVMS
999 $ nmake VF=1 test # Windows
1003 * Added the `-copy_extensions` option to the `x509` command for use with
1004 `-req` and `-x509toreq`. When given with the `copy` or `copyall` argument,
1005 all extensions in the request are copied to the certificate or vice versa.
1007 *David von Oheimb*, *Kirill Stefanenkov <kirill_stefanenkov@rambler.ru>*
1009 * Added the `-copy_extensions` option to the `req` command for use with
1010 `-x509`. When given with the `copy` or `copyall` argument,
1011 all extensions in the certification request are copied to the certificate.
1015 * The `x509`, `req`, and `ca` commands now make sure that X.509v3 certificates
1016 they generate are by default RFC 5280 compliant in the following sense:
1017 There is a subjectKeyIdentifier extension with a hash value of the public key
1018 and for not self-signed certs there is an authorityKeyIdentifier extension
1019 with a keyIdentifier field or issuer information identifying the signing key.
1020 This is done unless some configuration overrides the new default behavior,
1021 such as `subjectKeyIdentifier = none` and `authorityKeyIdentifier = none`.
1025 * Added several checks to `X509_verify_cert()` according to requirements in
1026 RFC 5280 in case `X509_V_FLAG_X509_STRICT` is set
1027 (which may be done by using the CLI option `-x509_strict`):
1028 * The basicConstraints of CA certificates must be marked critical.
1029 * CA certificates must explicitly include the keyUsage extension.
1030 * If a pathlenConstraint is given the key usage keyCertSign must be allowed.
1031 * The issuer name of any certificate must not be empty.
1032 * The subject name of CA certs, certs with keyUsage crlSign,
1033 and certs without subjectAlternativeName must not be empty.
1034 * If a subjectAlternativeName extension is given it must not be empty.
1035 * The signatureAlgorithm field and the cert signature must be consistent.
1036 * Any given authorityKeyIdentifier and any given subjectKeyIdentifier
1037 must not be marked critical.
1038 * The authorityKeyIdentifier must be given for X.509v3 certs
1039 unless they are self-signed.
1040 * The subjectKeyIdentifier must be given for all X.509v3 CA certs.
1044 * Certificate verification using `X509_verify_cert()` meanwhile rejects EC keys
1045 with explicit curve parameters (specifiedCurve) as required by RFC 5480.
1049 * For built-in EC curves, ensure an EC_GROUP built from the curve name is
1050 used even when parsing explicit parameters, when loading a encoded key
1051 or calling `EC_GROUP_new_from_ecpkparameters()`/
1052 `EC_GROUP_new_from_ecparameters()`.
1053 This prevents bypass of security hardening and performance gains,
1054 especially for curves with specialized EC_METHODs.
1055 By default, if a key encoded with explicit parameters is loaded and later
1056 encoded, the output is still encoded with explicit parameters, even if
1057 internally a "named" EC_GROUP is used for computation.
1061 * Compute ECC cofactors if not provided during EC_GROUP construction. Before
1062 this change, EC_GROUP_set_generator would accept order and/or cofactor as
1063 NULL. After this change, only the cofactor parameter can be NULL. It also
1064 does some minimal sanity checks on the passed order.
1069 * Fixed a padding oracle in PKCS7_dataDecode and CMS_decrypt_set1_pkey.
1070 An attack is simple, if the first CMS_recipientInfo is valid but the
1071 second CMS_recipientInfo is chosen ciphertext. If the second
1072 recipientInfo decodes to PKCS #1 v1.5 form plaintext, the correct
1073 encryption key will be replaced by garbage, and the message cannot be
1074 decoded, but if the RSA decryption fails, the correct encryption key is
1075 used and the recipient will not notice the attack.
1076 As a work around for this potential attack the length of the decrypted
1077 key must be equal to the cipher default key length, in case the
1078 certifiate is not given and all recipientInfo are tried out.
1079 The old behaviour can be re-enabled in the CMS code by setting the
1080 CMS_DEBUG_DECRYPT flag.
1084 * Early start up entropy quality from the DEVRANDOM seed source has been
1085 improved for older Linux systems. The RAND subsystem will wait for
1086 /dev/random to be producing output before seeding from /dev/urandom.
1087 The seeded state is stored for future library initialisations using
1088 a system global shared memory segment. The shared memory identifier
1089 can be configured by defining OPENSSL_RAND_SEED_DEVRANDOM_SHM_ID to
1090 the desired value. The default identifier is 114.
1094 * Revised BN_generate_prime_ex to not avoid factors 2..17863 in p-1
1095 when primes for RSA keys are computed.
1096 Since we previously always generated primes == 2 (mod 3) for RSA keys,
1097 the 2-prime and 3-prime RSA modules were easy to distinguish, since
1098 `N = p*q = 1 (mod 3)`, but `N = p*q*r = 2 (mod 3)`. Therefore fingerprinting
1099 2-prime vs. 3-prime RSA keys was possible by computing N mod 3.
1100 This avoids possible fingerprinting of newly generated RSA modules.
1104 * Correct the extended master secret constant on EBCDIC systems. Without this
1105 fix TLS connections between an EBCDIC system and a non-EBCDIC system that
1106 negotiate EMS will fail. Unfortunately this also means that TLS connections
1107 between EBCDIC systems with this fix, and EBCDIC systems without this
1108 fix will fail if they negotiate EMS.
1112 * Changed the library initialisation so that the config file is now loaded
1113 by default. This was already the case for libssl. It now occurs for both
1114 libcrypto and libssl. Use the OPENSSL_INIT_NO_LOAD_CONFIG option to
1115 `OPENSSL_init_crypto()` to suppress automatic loading of a config file.
1119 * Introduced new error raising macros, `ERR_raise()` and `ERR_raise_data()`,
1120 where the former acts as a replacement for `ERR_put_error()`, and the
1121 latter replaces the combination `ERR_put_error()` + `ERR_add_error_data()`.
1122 `ERR_raise_data()` adds more flexibility by taking a format string and
1123 an arbitrary number of arguments following it, to be processed with
1128 * Introduced a new function, `OSSL_PROVIDER_available()`, which can be used
1129 to check if a named provider is loaded and available. When called, it
1130 will also activate all fallback providers if such are still present.
1134 * Enforce a minimum DH modulus size of 512 bits.
1138 * Changed DH parameters to generate the order q subgroup instead of 2q.
1139 Previously generated DH parameters are still accepted by DH_check
1140 but DH_generate_key works around that by clearing bit 0 of the
1141 private key for those. This avoids leaking bit 0 of the private key.
1145 * Significantly reduce secure memory usage by the randomness pools.
1149 * `{CRYPTO,OPENSSL}_mem_debug_{push,pop}` are now no-ops and have been
1154 * A new type, EVP_KEYEXCH, has been introduced to represent key exchange
1155 algorithms. An implementation of a key exchange algorithm can be obtained
1156 by using the function EVP_KEYEXCH_fetch(). An EVP_KEYEXCH algorithm can be
1157 used in a call to EVP_PKEY_derive_init_ex() which works in a similar way to
1158 the older EVP_PKEY_derive_init() function. See the man pages for the new
1159 functions for further details.
1163 * The EVP_PKEY_CTX_set_dh_pad() macro has now been converted to a function.
1167 * Removed the function names from error messages and deprecated the
1172 * Removed NextStep support and the macro OPENSSL_UNISTD
1176 * Removed DES_check_key. Also removed OPENSSL_IMPLEMENT_GLOBAL,
1177 OPENSSL_GLOBAL_REF, OPENSSL_DECLARE_GLOBAL.
1178 Also removed "export var as function" capability; we do not export
1179 variables, only functions.
1183 * RC5_32_set_key has been changed to return an int type, with 0 indicating
1184 an error and 1 indicating success. In previous versions of OpenSSL this
1185 was a void type. If a key was set longer than the maximum possible this
1190 * Support SM2 signing and verification schemes with X509 certificate.
1194 * Use SHA256 as the default digest for TS query in the `ts` app.
1198 * Change PBKDF2 to conform to SP800-132 instead of the older PKCS5 RFC2898.
1202 * Default cipher lists/suites are now available via a function, the
1203 #defines are deprecated.
1207 * Add target VC-WIN32-UWP, VC-WIN64A-UWP, VC-WIN32-ARM-UWP and
1208 VC-WIN64-ARM-UWP in Windows OneCore target for making building libraries
1209 for Windows Store apps easier. Also, the "no-uplink" option has been added.
1213 * Join the directories crypto/x509 and crypto/x509v3
1217 * Added command 'openssl kdf' that uses the EVP_KDF API.
1221 * Added command 'openssl mac' that uses the EVP_MAC API.
1225 * Added OPENSSL_info() to get diverse built-in OpenSSL data, such
1226 as default directories. Also added the command 'openssl info'
1227 for scripting purposes.
1231 * The functions AES_ige_encrypt() and AES_bi_ige_encrypt() have been
1236 * Add prediction resistance to the DRBG reseeding process.
1240 * Limit the number of blocks in a data unit for AES-XTS to 2^20 as
1241 mandated by IEEE Std 1619-2018.
1245 * Added newline escaping functionality to a filename when using openssl dgst.
1246 This output format is to replicate the output format found in the `*sum`
1247 checksum programs. This aims to preserve backward compatibility.
1249 *Matt Eaton, Richard Levitte, and Paul Dale*
1251 * Removed the heartbeat message in DTLS feature, as it has very
1252 little usage and doesn't seem to fulfill a valuable purpose.
1253 The configuration option is now deprecated.
1257 * Changed the output of 'openssl {digestname} < file' to display the
1258 digest name in its output.
1262 * Added a new generic trace API which provides support for enabling
1263 instrumentation through trace output.
1265 *Richard Levitte & Matthias St. Pierre*
1267 * Added build tests for C++. These are generated files that only do one
1268 thing, to include one public OpenSSL head file each. This tests that
1269 the public header files can be usefully included in a C++ application.
1271 This test isn't enabled by default. It can be enabled with the option
1272 'enable-buildtest-c++'.
1276 * Added KB KDF (EVP_KDF_KB) to EVP_KDF.
1280 * Added SSH KDF (EVP_KDF_SSHKDF) and KRB5 KDF (EVP_KDF_KRB5KDF) to EVP_KDF.
1284 * Added Single Step KDF (EVP_KDF_SS), X963 KDF, and X942 KDF to EVP_KDF.
1288 * Added KMAC to EVP_MAC.
1292 * Added property based algorithm implementation selection framework to
1297 * Added SCA hardening for modular field inversion in EC_GROUP through
1298 a new dedicated field_inv() pointer in EC_METHOD.
1299 This also addresses a leakage affecting conversions from projective
1300 to affine coordinates.
1302 *Billy Bob Brumley, Nicola Tuveri*
1304 * Added EVP_KDF, an EVP layer KDF API, to simplify adding KDF and PRF
1305 implementations. This includes an EVP_PKEY to EVP_KDF bridge for
1306 those algorithms that were already supported through the EVP_PKEY API
1307 (scrypt, TLS1 PRF and HKDF). The low-level KDF functions for PBKDF2
1308 and scrypt are now wrappers that call EVP_KDF.
1312 * Build devcrypto engine as a dynamic engine.
1314 *Eneas U de Queiroz*
1316 * Add keyed BLAKE2 to EVP_MAC.
1320 * Fix a bug in the computation of the endpoint-pair shared secret used
1321 by DTLS over SCTP. This breaks interoperability with older versions
1322 of OpenSSL like OpenSSL 1.1.0 and OpenSSL 1.0.2. There is a runtime
1323 switch SSL_MODE_DTLS_SCTP_LABEL_LENGTH_BUG (off by default) enabling
1324 interoperability with such broken implementations. However, enabling
1325 this switch breaks interoperability with correct implementations.
1327 * Fix a use after free bug in d2i_X509_PUBKEY when overwriting a
1328 re-used X509_PUBKEY object if the second PUBKEY is malformed.
1332 * Move strictness check from EVP_PKEY_asn1_new() to EVP_PKEY_asn1_add0().
1336 * Changed the license to the Apache License v2.0.
1340 * Switch to a new version scheme using three numbers MAJOR.MINOR.PATCH.
1342 - Major releases (indicated by incrementing the MAJOR release number)
1343 may introduce incompatible API/ABI changes.
1344 - Minor releases (indicated by incrementing the MINOR release number)
1345 may introduce new features but retain API/ABI compatibility.
1346 - Patch releases (indicated by incrementing the PATCH number)
1347 are intended for bug fixes and other improvements of existing
1348 features only (like improving performance or adding documentation)
1349 and retain API/ABI compatibility.
1353 * Add support for RFC5297 SIV mode (siv128), including AES-SIV.
1357 * Remove the 'dist' target and add a tarball building script. The
1358 'dist' target has fallen out of use, and it shouldn't be
1359 necessary to configure just to create a source distribution.
1363 * Recreate the OS390-Unix config target. It no longer relies on a
1364 special script like it did for OpenSSL pre-1.1.0.
1368 * Instead of having the source directories listed in Configure, add
1369 a 'build.info' keyword SUBDIRS to indicate what sub-directories to
1374 * Add GMAC to EVP_MAC.
1378 * Ported the HMAC, CMAC and SipHash EVP_PKEY_METHODs to EVP_MAC.
1382 * Added EVP_MAC, an EVP layer MAC API, to simplify adding MAC
1383 implementations. This includes a generic EVP_PKEY to EVP_MAC bridge,
1384 to facilitate the continued use of MACs through raw private keys in
1385 functionality such as `EVP_DigestSign*` and `EVP_DigestVerify*`.
1389 * Deprecate ECDH_KDF_X9_62().
1393 * Added EVP_PKEY_ECDH_KDF_X9_63 and ecdh_KDF_X9_63() as replacements for
1394 the EVP_PKEY_ECDH_KDF_X9_62 KDF type and ECDH_KDF_X9_62(). The old names
1395 are retained for backwards compatibility.
1399 * AES-XTS mode now enforces that its two keys are different to mitigate
1400 the attacked described in "Efficient Instantiations of Tweakable
1401 Blockciphers and Refinements to Modes OCB and PMAC" by Phillip Rogaway.
1402 Details of this attack can be obtained from:
1403 <http://web.cs.ucdavis.edu/%7Erogaway/papers/offsets.pdf>
1407 * Rename the object files, i.e. give them other names than in previous
1408 versions. Their names now include the name of the final product, as
1409 well as its type mnemonic (bin, lib, shlib).
1413 * Added new option for 'openssl list', '-objects', which will display the
1414 list of built in objects, i.e. OIDs with names.
1418 * Added the options `-crl_lastupdate` and `-crl_nextupdate` to `openssl ca`,
1419 allowing the `lastUpdate` and `nextUpdate` fields in the generated CRL to
1424 * Added support for Linux Kernel TLS data-path. The Linux Kernel data-path
1425 improves application performance by removing data copies and providing
1426 applications with zero-copy system calls such as sendfile and splice.
1430 * The SSL option SSL_OP_CLEANSE_PLAINTEXT is introduced.
1434 * `PKCS12_parse` now maintains the order of the parsed certificates
1435 when outputting them via `*ca` (rather than reversing it).
1439 * Deprecated pthread fork support methods.
1443 * Added support for FFDHE key exchange in TLS 1.3.
1447 * Added a new concept for OpenSSL plugability: providers. This
1448 functionality is designed to replace the ENGINE API and ENGINE
1449 implementations, and to be much more dynamic, allowing provider
1450 authors to introduce new algorithms among other things, as long as
1451 there's an API that supports the algorithm type.
1453 With this concept comes a new core API for interaction between
1454 libcrypto and provider implementations. Public libcrypto functions
1455 that want to use providers do so through this core API.
1457 The main documentation for this core API is found in
1458 doc/man7/provider.pod, doc/man7/provider-base.pod, and they in turn
1459 refer to other manuals describing the API specific for supported
1460 algorithm types (also called operations).
1467 ### Changes between 1.1.1k and 1.1.1l [24 Aug 2021]
1469 * Fixed an SM2 Decryption Buffer Overflow.
1471 In order to decrypt SM2 encrypted data an application is expected to
1472 call the API function EVP_PKEY_decrypt(). Typically an application will
1473 call this function twice. The first time, on entry, the "out" parameter
1474 can be NULL and, on exit, the "outlen" parameter is populated with the
1475 buffer size required to hold the decrypted plaintext. The application
1476 can then allocate a sufficiently sized buffer and call EVP_PKEY_decrypt()
1477 again, but this time passing a non-NULL value for the "out" parameter.
1479 A bug in the implementation of the SM2 decryption code means that the
1480 calculation of the buffer size required to hold the plaintext returned
1481 by the first call to EVP_PKEY_decrypt() can be smaller than the actual
1482 size required by the second call. This can lead to a buffer overflow
1483 when EVP_PKEY_decrypt() is called by the application a second time with
1484 a buffer that is too small.
1486 A malicious attacker who is able present SM2 content for decryption to
1487 an application could cause attacker chosen data to overflow the buffer
1488 by up to a maximum of 62 bytes altering the contents of other data held
1489 after the buffer, possibly changing application behaviour or causing
1490 the application to crash. The location of the buffer is application
1491 dependent but is typically heap allocated.
1496 * Fixed various read buffer overruns processing ASN.1 strings
1498 ASN.1 strings are represented internally within OpenSSL as an ASN1_STRING
1499 structure which contains a buffer holding the string data and a field
1500 holding the buffer length. This contrasts with normal C strings which
1501 are repesented as a buffer for the string data which is terminated
1502 with a NUL (0) byte.
1504 Although not a strict requirement, ASN.1 strings that are parsed using
1505 OpenSSL's own "d2i" functions (and other similar parsing functions) as
1506 well as any string whose value has been set with the ASN1_STRING_set()
1507 function will additionally NUL terminate the byte array in the
1508 ASN1_STRING structure.
1510 However, it is possible for applications to directly construct valid
1511 ASN1_STRING structures which do not NUL terminate the byte array by
1512 directly setting the "data" and "length" fields in the ASN1_STRING
1513 array. This can also happen by using the ASN1_STRING_set0() function.
1515 Numerous OpenSSL functions that print ASN.1 data have been found to
1516 assume that the ASN1_STRING byte array will be NUL terminated, even
1517 though this is not guaranteed for strings that have been directly
1518 constructed. Where an application requests an ASN.1 structure to be
1519 printed, and where that ASN.1 structure contains ASN1_STRINGs that have
1520 been directly constructed by the application without NUL terminating
1521 the "data" field, then a read buffer overrun can occur.
1523 The same thing can also occur during name constraints processing
1524 of certificates (for example if a certificate has been directly
1525 constructed by the application instead of loading it via the OpenSSL
1526 parsing functions, and the certificate contains non NUL terminated
1527 ASN1_STRING structures). It can also occur in the X509_get1_email(),
1528 X509_REQ_get1_email() and X509_get1_ocsp() functions.
1530 If a malicious actor can cause an application to directly construct an
1531 ASN1_STRING and then process it through one of the affected OpenSSL
1532 functions then this issue could be hit. This might result in a crash
1533 (causing a Denial of Service attack). It could also result in the
1534 disclosure of private memory contents (such as private keys, or
1535 sensitive plaintext).
1540 ### Changes between 1.1.1j and 1.1.1k [25 Mar 2021]
1542 * Fixed a problem with verifying a certificate chain when using the
1543 X509_V_FLAG_X509_STRICT flag. This flag enables additional security checks of
1544 the certificates present in a certificate chain. It is not set by default.
1546 Starting from OpenSSL version 1.1.1h a check to disallow certificates in
1547 the chain that have explicitly encoded elliptic curve parameters was added
1548 as an additional strict check.
1550 An error in the implementation of this check meant that the result of a
1551 previous check to confirm that certificates in the chain are valid CA
1552 certificates was overwritten. This effectively bypasses the check
1553 that non-CA certificates must not be able to issue other certificates.
1555 If a "purpose" has been configured then there is a subsequent opportunity
1556 for checks that the certificate is a valid CA. All of the named "purpose"
1557 values implemented in libcrypto perform this check. Therefore, where
1558 a purpose is set the certificate chain will still be rejected even when the
1559 strict flag has been used. A purpose is set by default in libssl client and
1560 server certificate verification routines, but it can be overridden or
1561 removed by an application.
1563 In order to be affected, an application must explicitly set the
1564 X509_V_FLAG_X509_STRICT verification flag and either not set a purpose
1565 for the certificate verification or, in the case of TLS client or server
1566 applications, override the default purpose.
1571 * Fixed an issue where an OpenSSL TLS server may crash if sent a maliciously
1572 crafted renegotiation ClientHello message from a client. If a TLSv1.2
1573 renegotiation ClientHello omits the signature_algorithms extension (where it
1574 was present in the initial ClientHello), but includes a
1575 signature_algorithms_cert extension then a NULL pointer dereference will
1576 result, leading to a crash and a denial of service attack.
1578 A server is only vulnerable if it has TLSv1.2 and renegotiation enabled
1579 (which is the default configuration). OpenSSL TLS clients are not impacted by
1583 *Peter Kästle and Samuel Sapalski*
1585 ### Changes between 1.1.1i and 1.1.1j [16 Feb 2021]
1587 * Fixed the X509_issuer_and_serial_hash() function. It attempts to
1588 create a unique hash value based on the issuer and serial number data
1589 contained within an X509 certificate. However it was failing to correctly
1590 handle any errors that may occur while parsing the issuer field (which might
1591 occur if the issuer field is maliciously constructed). This may subsequently
1592 result in a NULL pointer deref and a crash leading to a potential denial of
1598 * Fixed the RSA_padding_check_SSLv23() function and the RSA_SSLV23_PADDING
1599 padding mode to correctly check for rollback attacks. This is considered a
1600 bug in OpenSSL 1.1.1 because it does not support SSLv2. In 1.0.2 this is
1605 Fixed the EVP_CipherUpdate, EVP_EncryptUpdate and EVP_DecryptUpdate
1606 functions. Previously they could overflow the output length argument in some
1607 cases where the input length is close to the maximum permissable length for
1608 an integer on the platform. In such cases the return value from the function
1609 call would be 1 (indicating success), but the output length value would be
1610 negative. This could cause applications to behave incorrectly or crash.
1615 * Fixed SRP_Calc_client_key so that it runs in constant time. The previous
1616 implementation called BN_mod_exp without setting BN_FLG_CONSTTIME. This
1617 could be exploited in a side channel attack to recover the password. Since
1618 the attack is local host only this is outside of the current OpenSSL
1619 threat model and therefore no CVE is assigned.
1621 Thanks to Mohammed Sabt and Daniel De Almeida Braga for reporting this
1626 ### Changes between 1.1.1h and 1.1.1i [8 Dec 2020]
1628 * Fixed NULL pointer deref in the GENERAL_NAME_cmp function
1629 This function could crash if both GENERAL_NAMEs contain an EDIPARTYNAME.
1630 If an attacker can control both items being compared then this could lead
1631 to a possible denial of service attack. OpenSSL itself uses the
1632 GENERAL_NAME_cmp function for two purposes:
1633 1) Comparing CRL distribution point names between an available CRL and a
1634 CRL distribution point embedded in an X509 certificate
1635 2) When verifying that a timestamp response token signer matches the
1636 timestamp authority name (exposed via the API functions
1637 TS_RESP_verify_response and TS_RESP_verify_token)
1642 ### Changes between 1.1.1g and 1.1.1h [22 Sep 2020]
1644 * Certificates with explicit curve parameters are now disallowed in
1645 verification chains if the X509_V_FLAG_X509_STRICT flag is used.
1649 * The 'MinProtocol' and 'MaxProtocol' configuration commands now silently
1650 ignore TLS protocol version bounds when configuring DTLS-based contexts, and
1651 conversely, silently ignore DTLS protocol version bounds when configuring
1652 TLS-based contexts. The commands can be repeated to set bounds of both
1653 types. The same applies with the corresponding "min_protocol" and
1654 "max_protocol" command-line switches, in case some application uses both TLS
1657 SSL_CTX instances that are created for a fixed protocol version (e.g.
1658 TLSv1_server_method()) also silently ignore version bounds. Previously
1659 attempts to apply bounds to these protocol versions would result in an
1660 error. Now only the "version-flexible" SSL_CTX instances are subject to
1661 limits in configuration files in command-line options.
1665 * Handshake now fails if Extended Master Secret extension is dropped
1670 * The Oracle Developer Studio compiler will start reporting deprecated APIs
1672 ### Changes between 1.1.1f and 1.1.1g [21 Apr 2020]
1674 * Fixed segmentation fault in SSL_check_chain()
1675 Server or client applications that call the SSL_check_chain() function
1676 during or after a TLS 1.3 handshake may crash due to a NULL pointer
1677 dereference as a result of incorrect handling of the
1678 "signature_algorithms_cert" TLS extension. The crash occurs if an invalid
1679 or unrecognised signature algorithm is received from the peer. This could
1680 be exploited by a malicious peer in a Denial of Service attack.
1685 * Added AES consttime code for no-asm configurations
1686 an optional constant time support for AES was added
1687 when building openssl for no-asm.
1688 Enable with: ./config no-asm -DOPENSSL_AES_CONST_TIME
1689 Disable with: ./config no-asm -DOPENSSL_NO_AES_CONST_TIME
1690 At this time this feature is by default disabled.
1691 It will be enabled by default in 3.0.
1695 ### Changes between 1.1.1e and 1.1.1f [31 Mar 2020]
1697 * Revert the change of EOF detection while reading in libssl to avoid
1698 regressions in applications depending on the current way of reporting
1699 the EOF. As the existing method is not fully accurate the change to
1700 reporting the EOF via SSL_ERROR_SSL is kept on the current development
1701 branch and will be present in the 3.0 release.
1705 * Revised BN_generate_prime_ex to not avoid factors 3..17863 in p-1
1706 when primes for RSA keys are computed.
1707 Since we previously always generated primes == 2 (mod 3) for RSA keys,
1708 the 2-prime and 3-prime RSA modules were easy to distinguish, since
1709 N = p*q = 1 (mod 3), but N = p*q*r = 2 (mod 3). Therefore fingerprinting
1710 2-prime vs. 3-prime RSA keys was possible by computing N mod 3.
1711 This avoids possible fingerprinting of newly generated RSA modules.
1715 ### Changes between 1.1.1d and 1.1.1e [17 Mar 2020]
1717 * Properly detect EOF while reading in libssl. Previously if we hit an EOF
1718 while reading in libssl then we would report an error back to the
1719 application (SSL_ERROR_SYSCALL) but errno would be 0. We now add
1720 an error to the stack (which means we instead return SSL_ERROR_SSL) and
1721 therefore give a hint as to what went wrong.
1725 * Check that ed25519 and ed448 are allowed by the security level. Previously
1726 signature algorithms not using an MD were not being checked that they were
1727 allowed by the security level.
1731 * Fixed SSL_get_servername() behaviour. The behaviour of SSL_get_servername()
1732 was not quite right. The behaviour was not consistent between resumption
1733 and normal handshakes, and also not quite consistent with historical
1734 behaviour. The behaviour in various scenarios has been clarified and
1735 it has been updated to make it match historical behaviour as closely as
1740 * *[VMS only]* The header files that the VMS compilers include automatically,
1741 `__DECC_INCLUDE_PROLOGUE.H` and `__DECC_INCLUDE_EPILOGUE.H`, use pragmas
1742 that the C++ compiler doesn't understand. This is a shortcoming in the
1743 compiler, but can be worked around with `__cplusplus` guards.
1745 C++ applications that use OpenSSL libraries must be compiled using the
1746 qualifier `/NAMES=(AS_IS,SHORTENED)` to be able to use all the OpenSSL
1747 functions. Otherwise, only functions with symbols of less than 31
1748 characters can be used, as the linker will not be able to successfully
1749 resolve symbols with longer names.
1753 * Added a new method to gather entropy on VMS, based on SYS$GET_ENTROPY.
1754 The presence of this system service is determined at run-time.
1758 * Print all values for a PKCS#12 attribute with 'openssl pkcs12', not just
1763 ### Changes between 1.1.1c and 1.1.1d [10 Sep 2019]
1765 * Fixed a fork protection issue. OpenSSL 1.1.1 introduced a rewritten random
1766 number generator (RNG). This was intended to include protection in the
1767 event of a fork() system call in order to ensure that the parent and child
1768 processes did not share the same RNG state. However this protection was not
1769 being used in the default case.
1771 A partial mitigation for this issue is that the output from a high
1772 precision timer is mixed into the RNG state so the likelihood of a parent
1773 and child process sharing state is significantly reduced.
1775 If an application already calls OPENSSL_init_crypto() explicitly using
1776 OPENSSL_INIT_ATFORK then this problem does not occur at all.
1779 *Matthias St. Pierre*
1781 * For built-in EC curves, ensure an EC_GROUP built from the curve name is
1782 used even when parsing explicit parameters, when loading a encoded key
1783 or calling `EC_GROUP_new_from_ecpkparameters()`/
1784 `EC_GROUP_new_from_ecparameters()`.
1785 This prevents bypass of security hardening and performance gains,
1786 especially for curves with specialized EC_METHODs.
1787 By default, if a key encoded with explicit parameters is loaded and later
1788 encoded, the output is still encoded with explicit parameters, even if
1789 internally a "named" EC_GROUP is used for computation.
1793 * Compute ECC cofactors if not provided during EC_GROUP construction. Before
1794 this change, EC_GROUP_set_generator would accept order and/or cofactor as
1795 NULL. After this change, only the cofactor parameter can be NULL. It also
1796 does some minimal sanity checks on the passed order.
1801 * Fixed a padding oracle in PKCS7_dataDecode and CMS_decrypt_set1_pkey.
1802 An attack is simple, if the first CMS_recipientInfo is valid but the
1803 second CMS_recipientInfo is chosen ciphertext. If the second
1804 recipientInfo decodes to PKCS #1 v1.5 form plaintext, the correct
1805 encryption key will be replaced by garbage, and the message cannot be
1806 decoded, but if the RSA decryption fails, the correct encryption key is
1807 used and the recipient will not notice the attack.
1808 As a work around for this potential attack the length of the decrypted
1809 key must be equal to the cipher default key length, in case the
1810 certifiate is not given and all recipientInfo are tried out.
1811 The old behaviour can be re-enabled in the CMS code by setting the
1812 CMS_DEBUG_DECRYPT flag.
1817 * Early start up entropy quality from the DEVRANDOM seed source has been
1818 improved for older Linux systems. The RAND subsystem will wait for
1819 /dev/random to be producing output before seeding from /dev/urandom.
1820 The seeded state is stored for future library initialisations using
1821 a system global shared memory segment. The shared memory identifier
1822 can be configured by defining OPENSSL_RAND_SEED_DEVRANDOM_SHM_ID to
1823 the desired value. The default identifier is 114.
1827 * Correct the extended master secret constant on EBCDIC systems. Without this
1828 fix TLS connections between an EBCDIC system and a non-EBCDIC system that
1829 negotiate EMS will fail. Unfortunately this also means that TLS connections
1830 between EBCDIC systems with this fix, and EBCDIC systems without this
1831 fix will fail if they negotiate EMS.
1835 * Use Windows installation paths in the mingw builds
1837 Mingw isn't a POSIX environment per se, which means that Windows
1838 paths should be used for installation.
1843 * Changed DH_check to accept parameters with order q and 2q subgroups.
1844 With order 2q subgroups the bit 0 of the private key is not secret
1845 but DH_generate_key works around that by clearing bit 0 of the
1846 private key for those. This avoids leaking bit 0 of the private key.
1850 * Significantly reduce secure memory usage by the randomness pools.
1854 * Revert the DEVRANDOM_WAIT feature for Linux systems
1856 The DEVRANDOM_WAIT feature added a select() call to wait for the
1857 /dev/random device to become readable before reading from the
1858 /dev/urandom device.
1860 It turned out that this change had negative side effects on
1861 performance which were not acceptable. After some discussion it
1862 was decided to revert this feature and leave it up to the OS
1863 resp. the platform maintainer to ensure a proper initialization
1864 during early boot time.
1866 *Matthias St. Pierre*
1868 ### Changes between 1.1.1b and 1.1.1c [28 May 2019]
1870 * Add build tests for C++. These are generated files that only do one
1871 thing, to include one public OpenSSL head file each. This tests that
1872 the public header files can be usefully included in a C++ application.
1874 This test isn't enabled by default. It can be enabled with the option
1875 'enable-buildtest-c++'.
1879 * Enable SHA3 pre-hashing for ECDSA and DSA.
1883 * Change the default RSA, DSA and DH size to 2048 bit instead of 1024.
1884 This changes the size when using the `genpkey` command when no size is given.
1885 It fixes an omission in earlier changes that changed all RSA, DSA and DH
1886 generation commands to use 2048 bits by default.
1890 * Reorganize the manual pages to consistently have RETURN VALUES,
1891 EXAMPLES, SEE ALSO and HISTORY come in that order, and adjust
1892 util/fix-doc-nits accordingly.
1894 *Paul Yang, Joshua Lock*
1896 * Add the missing accessor EVP_PKEY_get0_engine()
1900 * Have commands like `s_client` and `s_server` output the signature scheme
1901 along with other cipher suite parameters when debugging.
1905 * Make OPENSSL_config() error agnostic again.
1909 * Do the error handling in RSA decryption constant time.
1913 * Prevent over long nonces in ChaCha20-Poly1305.
1915 ChaCha20-Poly1305 is an AEAD cipher, and requires a unique nonce input
1916 for every encryption operation. RFC 7539 specifies that the nonce value
1917 (IV) should be 96 bits (12 bytes). OpenSSL allows a variable nonce length
1918 and front pads the nonce with 0 bytes if it is less than 12
1919 bytes. However it also incorrectly allows a nonce to be set of up to 16
1920 bytes. In this case only the last 12 bytes are significant and any
1921 additional leading bytes are ignored.
1923 It is a requirement of using this cipher that nonce values are
1924 unique. Messages encrypted using a reused nonce value are susceptible to
1925 serious confidentiality and integrity attacks. If an application changes
1926 the default nonce length to be longer than 12 bytes and then makes a
1927 change to the leading bytes of the nonce expecting the new value to be a
1928 new unique nonce then such an application could inadvertently encrypt
1929 messages with a reused nonce.
1931 Additionally the ignored bytes in a long nonce are not covered by the
1932 integrity guarantee of this cipher. Any application that relies on the
1933 integrity of these ignored leading bytes of a long nonce may be further
1934 affected. Any OpenSSL internal use of this cipher, including in SSL/TLS,
1935 is safe because no such use sets such a long nonce value. However user
1936 applications that use this cipher directly and set a non-default nonce
1937 length to be longer than 12 bytes may be vulnerable.
1939 This issue was reported to OpenSSL on 16th of March 2019 by Joran Dirk
1945 * Add DEVRANDOM_WAIT feature for Linux systems
1947 On older Linux systems where the getrandom() system call is not available,
1948 OpenSSL normally uses the /dev/urandom device for seeding its CSPRNG.
1949 Contrary to getrandom(), the /dev/urandom device will not block during
1950 early boot when the kernel CSPRNG has not been seeded yet.
1952 To mitigate this known weakness, use select() to wait for /dev/random to
1953 become readable before reading from /dev/urandom.
1955 * Ensure that SM2 only uses SM3 as digest algorithm
1959 ### Changes between 1.1.1a and 1.1.1b [26 Feb 2019]
1961 * Change the info callback signals for the start and end of a post-handshake
1962 message exchange in TLSv1.3. In 1.1.1/1.1.1a we used SSL_CB_HANDSHAKE_START
1963 and SSL_CB_HANDSHAKE_DONE. Experience has shown that many applications get
1964 confused by this and assume that a TLSv1.2 renegotiation has started. This
1965 can break KeyUpdate handling. Instead we no longer signal the start and end
1966 of a post handshake message exchange (although the messages themselves are
1967 still signalled). This could break some applications that were expecting
1968 the old signals. However without this KeyUpdate is not usable for many
1973 ### Changes between 1.1.1 and 1.1.1a [20 Nov 2018]
1975 * Timing vulnerability in DSA signature generation
1977 The OpenSSL DSA signature algorithm has been shown to be vulnerable to a
1978 timing side channel attack. An attacker could use variations in the signing
1979 algorithm to recover the private key.
1981 This issue was reported to OpenSSL on 16th October 2018 by Samuel Weiser.
1986 * Timing vulnerability in ECDSA signature generation
1988 The OpenSSL ECDSA signature algorithm has been shown to be vulnerable to a
1989 timing side channel attack. An attacker could use variations in the signing
1990 algorithm to recover the private key.
1992 This issue was reported to OpenSSL on 25th October 2018 by Samuel Weiser.
1997 * Fixed the issue that RAND_add()/RAND_seed() silently discards random input
1998 if its length exceeds 4096 bytes. The limit has been raised to a buffer size
1999 of two gigabytes and the error handling improved.
2001 This issue was reported to OpenSSL by Dr. Falko Strenzke. It has been
2002 categorized as a normal bug, not a security issue, because the DRBG reseeds
2003 automatically and is fully functional even without additional randomness
2004 provided by the application.
2006 ### Changes between 1.1.0i and 1.1.1 [11 Sep 2018]
2008 * Add a new ClientHello callback. Provides a callback interface that gives
2009 the application the ability to adjust the nascent SSL object at the
2010 earliest stage of ClientHello processing, immediately after extensions have
2011 been collected but before they have been processed. In particular, this
2012 callback can adjust the supported TLS versions in response to the contents
2017 * Add SM2 base algorithm support.
2021 * s390x assembly pack: add (improved) hardware-support for the following
2022 cryptographic primitives: sha3, shake, aes-gcm, aes-ccm, aes-ctr, aes-ofb,
2023 aes-cfb/cfb8, aes-ecb.
2027 * Make EVP_PKEY_asn1_new() a bit stricter about its input. A NULL pem_str
2028 parameter is no longer accepted, as it leads to a corrupt table. NULL
2029 pem_str is reserved for alias entries only.
2033 * Use the new ec_scalar_mul_ladder scaffold to implement a specialized ladder
2034 step for prime curves. The new implementation is based on formulae from
2035 differential addition-and-doubling in homogeneous projective coordinates
2036 from Izu-Takagi "A fast parallel elliptic curve multiplication resistant
2037 against side channel attacks" and Brier-Joye "Weierstrass Elliptic Curves
2038 and Side-Channel Attacks" Eq. (8) for y-coordinate recovery, modified
2039 to work in projective coordinates.
2041 *Billy Bob Brumley, Nicola Tuveri*
2043 * Change generating and checking of primes so that the error rate of not
2044 being prime depends on the intended use based on the size of the input.
2045 For larger primes this will result in more rounds of Miller-Rabin.
2046 The maximal error rate for primes with more than 1080 bits is lowered
2049 *Kurt Roeckx, Annie Yousar*
2051 * Increase the number of Miller-Rabin rounds for DSA key generating to 64.
2055 * The 'tsget' script is renamed to 'tsget.pl', to avoid confusion when
2056 moving between systems, and to avoid confusion when a Windows build is
2057 done with mingw vs with MSVC. For POSIX installs, there's still a
2058 symlink or copy named 'tsget' to avoid that confusion as well.
2062 * Revert blinding in ECDSA sign and instead make problematic addition
2063 length-invariant. Switch even to fixed-length Montgomery multiplication.
2067 * Use the new ec_scalar_mul_ladder scaffold to implement a specialized ladder
2068 step for binary curves. The new implementation is based on formulae from
2069 differential addition-and-doubling in mixed Lopez-Dahab projective
2070 coordinates, modified to independently blind the operands.
2072 *Billy Bob Brumley, Sohaib ul Hassan, Nicola Tuveri*
2074 * Add a scaffold to optionally enhance the Montgomery ladder implementation
2075 for `ec_scalar_mul_ladder` (formerly `ec_mul_consttime`) allowing
2076 EC_METHODs to implement their own specialized "ladder step", to take
2077 advantage of more favorable coordinate systems or more efficient
2078 differential addition-and-doubling algorithms.
2080 *Billy Bob Brumley, Sohaib ul Hassan, Nicola Tuveri*
2082 * Modified the random device based seed sources to keep the relevant
2083 file descriptors open rather than reopening them on each access.
2084 This allows such sources to operate in a chroot() jail without
2085 the associated device nodes being available. This behaviour can be
2086 controlled using RAND_keep_random_devices_open().
2090 * Numerous side-channel attack mitigations have been applied. This may have
2091 performance impacts for some algorithms for the benefit of improved
2092 security. Specific changes are noted in this change log by their respective
2097 * AIX shared library support overhaul. Switch to AIX "natural" way of
2098 handling shared libraries, which means collecting shared objects of
2099 different versions and bitnesses in one common archive. This allows to
2100 mitigate conflict between 1.0 and 1.1 side-by-side installations. It
2101 doesn't affect the way 3rd party applications are linked, only how
2102 multi-version installation is managed.
2106 * Make ec_group_do_inverse_ord() more robust and available to other
2107 EC cryptosystems, so that irrespective of BN_FLG_CONSTTIME, SCA
2108 mitigations are applied to the fallback BN_mod_inverse().
2109 When using this function rather than BN_mod_inverse() directly, new
2110 EC cryptosystem implementations are then safer-by-default.
2114 * Add coordinate blinding for EC_POINT and implement projective
2115 coordinate blinding for generic prime curves as a countermeasure to
2116 chosen point SCA attacks.
2118 *Sohaib ul Hassan, Nicola Tuveri, Billy Bob Brumley*
2120 * Add blinding to ECDSA and DSA signatures to protect against side channel
2121 attacks discovered by Keegan Ryan (NCC Group).
2125 * Enforce checking in the `pkeyutl` command to ensure that the input
2126 length does not exceed the maximum supported digest length when performing
2127 a sign, verify or verifyrecover operation.
2131 * SSL_MODE_AUTO_RETRY is enabled by default. Applications that use blocking
2132 I/O in combination with something like select() or poll() will hang. This
2133 can be turned off again using SSL_CTX_clear_mode().
2134 Many applications do not properly handle non-application data records, and
2135 TLS 1.3 sends more of such records. Setting SSL_MODE_AUTO_RETRY works
2136 around the problems in those applications, but can also break some.
2137 It's recommended to read the manpages about SSL_read(), SSL_write(),
2138 SSL_get_error(), SSL_shutdown(), SSL_CTX_set_mode() and
2139 SSL_CTX_set_read_ahead() again.
2143 * When unlocking a pass phrase protected PEM file or PKCS#8 container, we
2144 now allow empty (zero character) pass phrases.
2148 * Apply blinding to binary field modular inversion and remove patent
2149 pending (OPENSSL_SUN_GF2M_DIV) BN_GF2m_mod_div implementation.
2153 * Deprecate ec2_mult.c and unify scalar multiplication code paths for
2154 binary and prime elliptic curves.
2158 * Remove ECDSA nonce padding: EC_POINT_mul is now responsible for
2159 constant time fixed point multiplication.
2163 * Revise elliptic curve scalar multiplication with timing attack
2164 defenses: ec_wNAF_mul redirects to a constant time implementation
2165 when computing fixed point and variable point multiplication (which
2166 in OpenSSL are mostly used with secret scalars in keygen, sign,
2167 ECDH derive operations).
2168 *Billy Bob Brumley, Nicola Tuveri, Cesar Pereida García,
2171 * Updated CONTRIBUTING
2175 * Updated DRBG / RAND to request nonce and additional low entropy
2176 randomness from the system.
2178 *Matthias St. Pierre*
2180 * Updated 'openssl rehash' to use OpenSSL consistent default.
2184 * Moved the load of the ssl_conf module to libcrypto, which helps
2185 loading engines that libssl uses before libssl is initialised.
2189 * Added EVP_PKEY_sign() and EVP_PKEY_verify() for EdDSA
2193 * Fixed X509_NAME_ENTRY_set to get multi-valued RDNs right in all cases.
2195 *Ingo Schwarze, Rich Salz*
2197 * Added output of accepting IP address and port for 'openssl s_server'
2201 * Added a new API for TLSv1.3 ciphersuites:
2202 SSL_CTX_set_ciphersuites()
2203 SSL_set_ciphersuites()
2207 * Memory allocation failures consistently add an error to the error
2212 * Don't use OPENSSL_ENGINES and OPENSSL_CONF environment values
2213 in libcrypto when run as setuid/setgid.
2217 * Load any config file by default when libssl is used.
2221 * Added new public header file <openssl/rand_drbg.h> and documentation
2222 for the RAND_DRBG API. See manual page RAND_DRBG(7) for an overview.
2224 *Matthias St. Pierre*
2226 * QNX support removed (cannot find contributors to get their approval
2227 for the license change).
2231 * TLSv1.3 replay protection for early data has been implemented. See the
2232 SSL_read_early_data() man page for further details.
2236 * Separated TLSv1.3 ciphersuite configuration out from TLSv1.2 ciphersuite
2237 configuration. TLSv1.3 ciphersuites are not compatible with TLSv1.2 and
2238 below. Similarly TLSv1.2 ciphersuites are not compatible with TLSv1.3.
2239 In order to avoid issues where legacy TLSv1.2 ciphersuite configuration
2240 would otherwise inadvertently disable all TLSv1.3 ciphersuites the
2241 configuration has been separated out. See the ciphers man page or the
2242 SSL_CTX_set_ciphersuites() man page for more information.
2246 * On POSIX (BSD, Linux, ...) systems the ocsp(1) command running
2247 in responder mode now supports the new "-multi" option, which
2248 spawns the specified number of child processes to handle OCSP
2249 requests. The "-timeout" option now also limits the OCSP
2250 responder's patience to wait to receive the full client request
2251 on a newly accepted connection. Child processes are respawned
2252 as needed, and the CA index file is automatically reloaded
2253 when changed. This makes it possible to run the "ocsp" responder
2254 as a long-running service, making the OpenSSL CA somewhat more
2255 feature-complete. In this mode, most diagnostic messages logged
2256 after entering the event loop are logged via syslog(3) rather than
2261 * Added support for X448 and Ed448. Heavily based on original work by
2266 * Extend OSSL_STORE with capabilities to search and to narrow the set of
2267 objects loaded. This adds the functions OSSL_STORE_expect() and
2268 OSSL_STORE_find() as well as needed tools to construct searches and
2269 get the search data out of them.
2273 * Support for TLSv1.3 added. Note that users upgrading from an earlier
2274 version of OpenSSL should review their configuration settings to ensure
2275 that they are still appropriate for TLSv1.3. For further information see:
2276 <https://wiki.openssl.org/index.php/TLS1.3>
2280 * Grand redesign of the OpenSSL random generator
2282 The default RAND method now utilizes an AES-CTR DRBG according to
2283 NIST standard SP 800-90Ar1. The new random generator is essentially
2284 a port of the default random generator from the OpenSSL FIPS 2.0
2285 object module. It is a hybrid deterministic random bit generator
2286 using an AES-CTR bit stream and which seeds and reseeds itself
2287 automatically using trusted system entropy sources.
2289 Some of its new features are:
2290 - Support for multiple DRBG instances with seed chaining.
2291 - The default RAND method makes use of a DRBG.
2292 - There is a public and private DRBG instance.
2293 - The DRBG instances are fork-safe.
2294 - Keep all global DRBG instances on the secure heap if it is enabled.
2295 - The public and private DRBG instance are per thread for lock free
2298 *Paul Dale, Benjamin Kaduk, Kurt Roeckx, Rich Salz, Matthias St. Pierre*
2300 * Changed Configure so it only says what it does and doesn't dump
2301 so much data. Instead, ./configdata.pm should be used as a script
2302 to display all sorts of configuration data.
2306 * Added processing of "make variables" to Configure.
2310 * Added SHA512/224 and SHA512/256 algorithm support.
2314 * The last traces of Netware support, first removed in 1.1.0, have
2319 * Get rid of Makefile.shared, and in the process, make the processing
2320 of certain files (rc.obj, or the .def/.map/.opt files produced from
2321 the ordinal files) more visible and hopefully easier to trace and
2322 debug (or make silent).
2326 * Make it possible to have environment variable assignments as
2327 arguments to config / Configure.
2331 * Add multi-prime RSA (RFC 8017) support.
2335 * Add SM3 implemented according to GB/T 32905-2016
2336 *Jack Lloyd <jack.lloyd@ribose.com>,*
2337 *Ronald Tse <ronald.tse@ribose.com>,*
2338 *Erick Borsboom <erick.borsboom@ribose.com>*
2340 * Add 'Maximum Fragment Length' TLS extension negotiation and support
2341 as documented in RFC6066.
2342 Based on a patch from Tomasz Moń
2344 *Filipe Raimundo da Silva*
2346 * Add SM4 implemented according to GB/T 32907-2016.
2347 *Jack Lloyd <jack.lloyd@ribose.com>,*
2348 *Ronald Tse <ronald.tse@ribose.com>,*
2349 *Erick Borsboom <erick.borsboom@ribose.com>*
2351 * Reimplement -newreq-nodes and ERR_error_string_n; the
2352 original author does not agree with the license change.
2356 * Add ARIA AEAD TLS support.
2360 * Some macro definitions to support VS6 have been removed. Visual
2361 Studio 6 has not worked since 1.1.0
2365 * Add ERR_clear_last_mark(), to allow callers to clear the last mark
2366 without clearing the errors.
2370 * Add "atfork" functions. If building on a system that without
2371 pthreads, see doc/man3/OPENSSL_fork_prepare.pod for application
2372 requirements. The RAND facility now uses/requires this.
2380 * The UI API becomes a permanent and integral part of libcrypto, i.e.
2381 not possible to disable entirely. However, it's still possible to
2382 disable the console reading UI method, UI_OpenSSL() (use UI_null()
2385 To disable, configure with 'no-ui-console'. 'no-ui' is still
2386 possible to use as an alias. Check at compile time with the
2387 macro OPENSSL_NO_UI_CONSOLE. The macro OPENSSL_NO_UI is still
2388 possible to check and is an alias for OPENSSL_NO_UI_CONSOLE.
2392 * Add a STORE module, which implements a uniform and URI based reader of
2393 stores that can contain keys, certificates, CRLs and numerous other
2394 objects. The main API is loosely based on a few stdio functions,
2395 and includes OSSL_STORE_open, OSSL_STORE_load, OSSL_STORE_eof,
2396 OSSL_STORE_error and OSSL_STORE_close.
2397 The implementation uses backends called "loaders" to implement arbitrary
2398 URI schemes. There is one built in "loader" for the 'file' scheme.
2402 * Add devcrypto engine. This has been implemented against cryptodev-linux,
2403 then adjusted to work on FreeBSD 8.4 as well.
2404 Enable by configuring with 'enable-devcryptoeng'. This is done by default
2405 on BSD implementations, as cryptodev.h is assumed to exist on all of them.
2409 * Module names can prefixed with OSSL_ or OPENSSL_. This affects
2410 util/mkerr.pl, which is adapted to allow those prefixes, leading to
2411 error code calls like this:
2413 OSSL_FOOerr(OSSL_FOO_F_SOMETHING, OSSL_FOO_R_WHATEVER);
2415 With this change, we claim the namespaces OSSL and OPENSSL in a manner
2416 that can be encoded in C. For the foreseeable future, this will only
2419 *Richard Levitte and Tim Hudson*
2421 * Removed BSD cryptodev engine.
2425 * Add a build target 'build_all_generated', to build all generated files
2426 and only that. This can be used to prepare everything that requires
2427 things like perl for a system that lacks perl and then move everything
2428 to that system and do the rest of the build there.
2432 * In the UI interface, make it possible to duplicate the user data. This
2433 can be used by engines that need to retain the data for a longer time
2434 than just the call where this user data is passed.
2438 * Ignore the '-named_curve auto' value for compatibility of applications
2441 *Tomáš Mráz <tmraz@fedoraproject.org>*
2443 * Fragmented SSL/TLS alerts are no longer accepted. An alert message is 2
2444 bytes long. In theory it is permissible in SSLv3 - TLSv1.2 to fragment such
2445 alerts across multiple records (some of which could be empty). In practice
2446 it make no sense to send an empty alert record, or to fragment one. TLSv1.3
2447 prohibits this altogether and other libraries (BoringSSL, NSS) do not
2448 support this at all. Supporting it adds significant complexity to the
2449 record layer, and its removal is unlikely to cause interoperability
2454 * Add the ASN.1 types INT32, UINT32, INT64, UINT64 and variants prefixed
2455 with Z. These are meant to replace LONG and ZLONG and to be size safe.
2456 The use of LONG and ZLONG is discouraged and scheduled for deprecation
2461 * Add the 'z' and 'j' modifiers to BIO_printf() et al formatting string,
2462 'z' is to be used for [s]size_t, and 'j' - with [u]int64_t.
2464 *Richard Levitte, Andy Polyakov*
2466 * Add EC_KEY_get0_engine(), which does for EC_KEY what RSA_get0_engine()
2471 * Have 'config' recognise 64-bit mingw and choose 'mingw64' as the target
2472 platform rather than 'mingw'.
2476 * The functions X509_STORE_add_cert and X509_STORE_add_crl return
2477 success if they are asked to add an object which already exists
2478 in the store. This change cascades to other functions which load
2479 certificates and CRLs.
2483 * x86_64 assembly pack: annotate code with DWARF CFI directives to
2484 facilitate stack unwinding even from assembly subroutines.
2488 * Remove VAX C specific definitions of OPENSSL_EXPORT, OPENSSL_EXTERN.
2489 Also remove OPENSSL_GLOBAL entirely, as it became a no-op.
2493 * Remove the VMS-specific reimplementation of gmtime from crypto/o_times.c.
2494 VMS C's RTL has a fully up to date gmtime() and gmtime_r() since V7.1,
2495 which is the minimum version we support.
2499 * Certificate time validation (X509_cmp_time) enforces stricter
2500 compliance with RFC 5280. Fractional seconds and timezone offsets
2501 are no longer allowed.
2505 * Add support for ARIA
2509 * s_client will now send the Server Name Indication (SNI) extension by
2510 default unless the new "-noservername" option is used. The server name is
2511 based on the host provided to the "-connect" option unless overridden by
2512 using "-servername".
2516 * Add support for SipHash
2520 * OpenSSL now fails if it receives an unrecognised record type in TLS1.0
2521 or TLS1.1. Previously this only happened in SSLv3 and TLS1.2. This is to
2522 prevent issues where no progress is being made and the peer continually
2523 sends unrecognised record types, using up resources processing them.
2527 * 'openssl passwd' can now produce SHA256 and SHA512 based output,
2528 using the algorithm defined in
2529 <https://www.akkadia.org/drepper/SHA-crypt.txt>
2533 * Heartbeat support has been removed; the ABI is changed for now.
2535 *Richard Levitte, Rich Salz*
2537 * Support for SSL_OP_NO_ENCRYPT_THEN_MAC in SSL_CONF_cmd.
2541 * The RSA "null" method, which was partially supported to avoid patent
2542 issues, has been replaced to always returns NULL.
2549 ### Changes between 1.1.0k and 1.1.0l [10 Sep 2019]
2551 * For built-in EC curves, ensure an EC_GROUP built from the curve name is
2552 used even when parsing explicit parameters, when loading a encoded key
2553 or calling `EC_GROUP_new_from_ecpkparameters()`/
2554 `EC_GROUP_new_from_ecparameters()`.
2555 This prevents bypass of security hardening and performance gains,
2556 especially for curves with specialized EC_METHODs.
2557 By default, if a key encoded with explicit parameters is loaded and later
2558 encoded, the output is still encoded with explicit parameters, even if
2559 internally a "named" EC_GROUP is used for computation.
2563 * Compute ECC cofactors if not provided during EC_GROUP construction. Before
2564 this change, EC_GROUP_set_generator would accept order and/or cofactor as
2565 NULL. After this change, only the cofactor parameter can be NULL. It also
2566 does some minimal sanity checks on the passed order.
2571 * Fixed a padding oracle in PKCS7_dataDecode and CMS_decrypt_set1_pkey.
2572 An attack is simple, if the first CMS_recipientInfo is valid but the
2573 second CMS_recipientInfo is chosen ciphertext. If the second
2574 recipientInfo decodes to PKCS #1 v1.5 form plaintext, the correct
2575 encryption key will be replaced by garbage, and the message cannot be
2576 decoded, but if the RSA decryption fails, the correct encryption key is
2577 used and the recipient will not notice the attack.
2578 As a work around for this potential attack the length of the decrypted
2579 key must be equal to the cipher default key length, in case the
2580 certifiate is not given and all recipientInfo are tried out.
2581 The old behaviour can be re-enabled in the CMS code by setting the
2582 CMS_DEBUG_DECRYPT flag.
2587 * Use Windows installation paths in the mingw builds
2589 Mingw isn't a POSIX environment per se, which means that Windows
2590 paths should be used for installation.
2595 ### Changes between 1.1.0j and 1.1.0k [28 May 2019]
2597 * Change the default RSA, DSA and DH size to 2048 bit instead of 1024.
2598 This changes the size when using the `genpkey` command when no size is given.
2599 It fixes an omission in earlier changes that changed all RSA, DSA and DH
2600 generation commands to use 2048 bits by default.
2604 * Prevent over long nonces in ChaCha20-Poly1305.
2606 ChaCha20-Poly1305 is an AEAD cipher, and requires a unique nonce input
2607 for every encryption operation. RFC 7539 specifies that the nonce value
2608 (IV) should be 96 bits (12 bytes). OpenSSL allows a variable nonce length
2609 and front pads the nonce with 0 bytes if it is less than 12
2610 bytes. However it also incorrectly allows a nonce to be set of up to 16
2611 bytes. In this case only the last 12 bytes are significant and any
2612 additional leading bytes are ignored.
2614 It is a requirement of using this cipher that nonce values are
2615 unique. Messages encrypted using a reused nonce value are susceptible to
2616 serious confidentiality and integrity attacks. If an application changes
2617 the default nonce length to be longer than 12 bytes and then makes a
2618 change to the leading bytes of the nonce expecting the new value to be a
2619 new unique nonce then such an application could inadvertently encrypt
2620 messages with a reused nonce.
2622 Additionally the ignored bytes in a long nonce are not covered by the
2623 integrity guarantee of this cipher. Any application that relies on the
2624 integrity of these ignored leading bytes of a long nonce may be further
2625 affected. Any OpenSSL internal use of this cipher, including in SSL/TLS,
2626 is safe because no such use sets such a long nonce value. However user
2627 applications that use this cipher directly and set a non-default nonce
2628 length to be longer than 12 bytes may be vulnerable.
2630 This issue was reported to OpenSSL on 16th of March 2019 by Joran Dirk
2636 * Added SCA hardening for modular field inversion in EC_GROUP through
2637 a new dedicated field_inv() pointer in EC_METHOD.
2638 This also addresses a leakage affecting conversions from projective
2639 to affine coordinates.
2641 *Billy Bob Brumley, Nicola Tuveri*
2643 * Fix a use after free bug in d2i_X509_PUBKEY when overwriting a
2644 re-used X509_PUBKEY object if the second PUBKEY is malformed.
2648 * Move strictness check from EVP_PKEY_asn1_new() to EVP_PKEY_asn1_add0().
2652 * Remove the 'dist' target and add a tarball building script. The
2653 'dist' target has fallen out of use, and it shouldn't be
2654 necessary to configure just to create a source distribution.
2658 ### Changes between 1.1.0i and 1.1.0j [20 Nov 2018]
2660 * Timing vulnerability in DSA signature generation
2662 The OpenSSL DSA signature algorithm has been shown to be vulnerable to a
2663 timing side channel attack. An attacker could use variations in the signing
2664 algorithm to recover the private key.
2666 This issue was reported to OpenSSL on 16th October 2018 by Samuel Weiser.
2671 * Timing vulnerability in ECDSA signature generation
2673 The OpenSSL ECDSA signature algorithm has been shown to be vulnerable to a
2674 timing side channel attack. An attacker could use variations in the signing
2675 algorithm to recover the private key.
2677 This issue was reported to OpenSSL on 25th October 2018 by Samuel Weiser.
2682 * Add coordinate blinding for EC_POINT and implement projective
2683 coordinate blinding for generic prime curves as a countermeasure to
2684 chosen point SCA attacks.
2686 *Sohaib ul Hassan, Nicola Tuveri, Billy Bob Brumley*
2688 ### Changes between 1.1.0h and 1.1.0i [14 Aug 2018]
2690 * Client DoS due to large DH parameter
2692 During key agreement in a TLS handshake using a DH(E) based ciphersuite a
2693 malicious server can send a very large prime value to the client. This will
2694 cause the client to spend an unreasonably long period of time generating a
2695 key for this prime resulting in a hang until the client has finished. This
2696 could be exploited in a Denial Of Service attack.
2698 This issue was reported to OpenSSL on 5th June 2018 by Guido Vranken
2703 * Cache timing vulnerability in RSA Key Generation
2705 The OpenSSL RSA Key generation algorithm has been shown to be vulnerable to
2706 a cache timing side channel attack. An attacker with sufficient access to
2707 mount cache timing attacks during the RSA key generation process could
2708 recover the private key.
2710 This issue was reported to OpenSSL on 4th April 2018 by Alejandro Cabrera
2711 Aldaya, Billy Brumley, Cesar Pereida Garcia and Luis Manuel Alvarez Tapia.
2716 * Make EVP_PKEY_asn1_new() a bit stricter about its input. A NULL pem_str
2717 parameter is no longer accepted, as it leads to a corrupt table. NULL
2718 pem_str is reserved for alias entries only.
2722 * Revert blinding in ECDSA sign and instead make problematic addition
2723 length-invariant. Switch even to fixed-length Montgomery multiplication.
2727 * Change generating and checking of primes so that the error rate of not
2728 being prime depends on the intended use based on the size of the input.
2729 For larger primes this will result in more rounds of Miller-Rabin.
2730 The maximal error rate for primes with more than 1080 bits is lowered
2733 *Kurt Roeckx, Annie Yousar*
2735 * Increase the number of Miller-Rabin rounds for DSA key generating to 64.
2739 * Add blinding to ECDSA and DSA signatures to protect against side channel
2740 attacks discovered by Keegan Ryan (NCC Group).
2744 * When unlocking a pass phrase protected PEM file or PKCS#8 container, we
2745 now allow empty (zero character) pass phrases.
2749 * Certificate time validation (X509_cmp_time) enforces stricter
2750 compliance with RFC 5280. Fractional seconds and timezone offsets
2751 are no longer allowed.
2755 * Fixed a text canonicalisation bug in CMS
2757 Where a CMS detached signature is used with text content the text goes
2758 through a canonicalisation process first prior to signing or verifying a
2759 signature. This process strips trailing space at the end of lines, converts
2760 line terminators to CRLF and removes additional trailing line terminators
2761 at the end of a file. A bug in the canonicalisation process meant that
2762 some characters, such as form-feed, were incorrectly treated as whitespace
2763 and removed. This is contrary to the specification (RFC5485). This fix
2764 could mean that detached text data signed with an earlier version of
2765 OpenSSL 1.1.0 may fail to verify using the fixed version, or text data
2766 signed with a fixed OpenSSL may fail to verify with an earlier version of
2767 OpenSSL 1.1.0. A workaround is to only verify the canonicalised text data
2768 and use the "-binary" flag (for the "cms" command line application) or set
2769 the SMIME_BINARY/PKCS7_BINARY/CMS_BINARY flags (if using CMS_verify()).
2773 ### Changes between 1.1.0g and 1.1.0h [27 Mar 2018]
2775 * Constructed ASN.1 types with a recursive definition could exceed the stack
2777 Constructed ASN.1 types with a recursive definition (such as can be found
2778 in PKCS7) could eventually exceed the stack given malicious input with
2779 excessive recursion. This could result in a Denial Of Service attack. There
2780 are no such structures used within SSL/TLS that come from untrusted sources
2781 so this is considered safe.
2783 This issue was reported to OpenSSL on 4th January 2018 by the OSS-fuzz
2789 * Incorrect CRYPTO_memcmp on HP-UX PA-RISC
2791 Because of an implementation bug the PA-RISC CRYPTO_memcmp function is
2792 effectively reduced to only comparing the least significant bit of each
2793 byte. This allows an attacker to forge messages that would be considered as
2794 authenticated in an amount of tries lower than that guaranteed by the
2795 security claims of the scheme. The module can only be compiled by the
2796 HP-UX assembler, so that only HP-UX PA-RISC targets are affected.
2798 This issue was reported to OpenSSL on 2nd March 2018 by Peter Waltenberg
2804 * Add a build target 'build_all_generated', to build all generated files
2805 and only that. This can be used to prepare everything that requires
2806 things like perl for a system that lacks perl and then move everything
2807 to that system and do the rest of the build there.
2811 * Backport SSL_OP_NO_RENGOTIATION
2813 OpenSSL 1.0.2 and below had the ability to disable renegotiation using the
2814 (undocumented) SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS flag. Due to the opacity
2815 changes this is no longer possible in 1.1.0. Therefore the new
2816 SSL_OP_NO_RENEGOTIATION option from 1.1.1-dev has been backported to
2817 1.1.0 to provide equivalent functionality.
2819 Note that if an application built against 1.1.0h headers (or above) is run
2820 using an older version of 1.1.0 (prior to 1.1.0h) then the option will be
2821 accepted but nothing will happen, i.e. renegotiation will not be prevented.
2825 * Removed the OS390-Unix config target. It relied on a script that doesn't
2830 * rsaz_1024_mul_avx2 overflow bug on x86_64
2832 There is an overflow bug in the AVX2 Montgomery multiplication procedure
2833 used in exponentiation with 1024-bit moduli. No EC algorithms are affected.
2834 Analysis suggests that attacks against RSA and DSA as a result of this
2835 defect would be very difficult to perform and are not believed likely.
2836 Attacks against DH1024 are considered just feasible, because most of the
2837 work necessary to deduce information about a private key may be performed
2838 offline. The amount of resources required for such an attack would be
2839 significant. However, for an attack on TLS to be meaningful, the server
2840 would have to share the DH1024 private key among multiple clients, which is
2841 no longer an option since CVE-2016-0701.
2843 This only affects processors that support the AVX2 but not ADX extensions
2844 like Intel Haswell (4th generation).
2846 This issue was reported to OpenSSL by David Benjamin (Google). The issue
2847 was originally found via the OSS-Fuzz project.
2852 ### Changes between 1.1.0f and 1.1.0g [2 Nov 2017]
2854 * bn_sqrx8x_internal carry bug on x86_64
2856 There is a carry propagating bug in the x86_64 Montgomery squaring
2857 procedure. No EC algorithms are affected. Analysis suggests that attacks
2858 against RSA and DSA as a result of this defect would be very difficult to
2859 perform and are not believed likely. Attacks against DH are considered just
2860 feasible (although very difficult) because most of the work necessary to
2861 deduce information about a private key may be performed offline. The amount
2862 of resources required for such an attack would be very significant and
2863 likely only accessible to a limited number of attackers. An attacker would
2864 additionally need online access to an unpatched system using the target
2865 private key in a scenario with persistent DH parameters and a private
2866 key that is shared between multiple clients.
2868 This only affects processors that support the BMI1, BMI2 and ADX extensions
2869 like Intel Broadwell (5th generation) and later or AMD Ryzen.
2871 This issue was reported to OpenSSL by the OSS-Fuzz project.
2876 * Malformed X.509 IPAddressFamily could cause OOB read
2878 If an X.509 certificate has a malformed IPAddressFamily extension,
2879 OpenSSL could do a one-byte buffer overread. The most likely result
2880 would be an erroneous display of the certificate in text format.
2882 This issue was reported to OpenSSL by the OSS-Fuzz project.
2887 ### Changes between 1.1.0e and 1.1.0f [25 May 2017]
2889 * Have 'config' recognise 64-bit mingw and choose 'mingw64' as the target
2890 platform rather than 'mingw'.
2894 * Remove the VMS-specific reimplementation of gmtime from crypto/o_times.c.
2895 VMS C's RTL has a fully up to date gmtime() and gmtime_r() since V7.1,
2896 which is the minimum version we support.
2900 ### Changes between 1.1.0d and 1.1.0e [16 Feb 2017]
2902 * Encrypt-Then-Mac renegotiation crash
2904 During a renegotiation handshake if the Encrypt-Then-Mac extension is
2905 negotiated where it was not in the original handshake (or vice-versa) then
2906 this can cause OpenSSL to crash (dependant on ciphersuite). Both clients
2907 and servers are affected.
2909 This issue was reported to OpenSSL by Joe Orton (Red Hat).
2914 ### Changes between 1.1.0c and 1.1.0d [26 Jan 2017]
2916 * Truncated packet could crash via OOB read
2918 If one side of an SSL/TLS path is running on a 32-bit host and a specific
2919 cipher is being used, then a truncated packet can cause that host to
2920 perform an out-of-bounds read, usually resulting in a crash.
2922 This issue was reported to OpenSSL by Robert Święcki of Google.
2927 * Bad (EC)DHE parameters cause a client crash
2929 If a malicious server supplies bad parameters for a DHE or ECDHE key
2930 exchange then this can result in the client attempting to dereference a
2931 NULL pointer leading to a client crash. This could be exploited in a Denial
2934 This issue was reported to OpenSSL by Guido Vranken.
2939 * BN_mod_exp may produce incorrect results on x86_64
2941 There is a carry propagating bug in the x86_64 Montgomery squaring
2942 procedure. No EC algorithms are affected. Analysis suggests that attacks
2943 against RSA and DSA as a result of this defect would be very difficult to
2944 perform and are not believed likely. Attacks against DH are considered just
2945 feasible (although very difficult) because most of the work necessary to
2946 deduce information about a private key may be performed offline. The amount
2947 of resources required for such an attack would be very significant and
2948 likely only accessible to a limited number of attackers. An attacker would
2949 additionally need online access to an unpatched system using the target
2950 private key in a scenario with persistent DH parameters and a private
2951 key that is shared between multiple clients. For example this can occur by
2952 default in OpenSSL DHE based SSL/TLS ciphersuites. Note: This issue is very
2953 similar to CVE-2015-3193 but must be treated as a separate problem.
2955 This issue was reported to OpenSSL by the OSS-Fuzz project.
2960 ### Changes between 1.1.0b and 1.1.0c [10 Nov 2016]
2962 * ChaCha20/Poly1305 heap-buffer-overflow
2964 TLS connections using `*-CHACHA20-POLY1305` ciphersuites are susceptible to
2965 a DoS attack by corrupting larger payloads. This can result in an OpenSSL
2966 crash. This issue is not considered to be exploitable beyond a DoS.
2968 This issue was reported to OpenSSL by Robert Święcki (Google Security Team)
2973 * CMS Null dereference
2975 Applications parsing invalid CMS structures can crash with a NULL pointer
2976 dereference. This is caused by a bug in the handling of the ASN.1 CHOICE
2977 type in OpenSSL 1.1.0 which can result in a NULL value being passed to the
2978 structure callback if an attempt is made to free certain invalid encodings.
2979 Only CHOICE structures using a callback which do not handle NULL value are
2982 This issue was reported to OpenSSL by Tyler Nighswander of ForAllSecure.
2987 * Montgomery multiplication may produce incorrect results
2989 There is a carry propagating bug in the Broadwell-specific Montgomery
2990 multiplication procedure that handles input lengths divisible by, but
2991 longer than 256 bits. Analysis suggests that attacks against RSA, DSA
2992 and DH private keys are impossible. This is because the subroutine in
2993 question is not used in operations with the private key itself and an input
2994 of the attacker's direct choice. Otherwise the bug can manifest itself as
2995 transient authentication and key negotiation failures or reproducible
2996 erroneous outcome of public-key operations with specially crafted input.
2997 Among EC algorithms only Brainpool P-512 curves are affected and one
2998 presumably can attack ECDH key negotiation. Impact was not analyzed in
2999 detail, because pre-requisites for attack are considered unlikely. Namely
3000 multiple clients have to choose the curve in question and the server has to
3001 share the private key among them, neither of which is default behaviour.
3002 Even then only clients that chose the curve will be affected.
3004 This issue was publicly reported as transient failures and was not
3005 initially recognized as a security issue. Thanks to Richard Morgan for
3006 providing reproducible case.
3011 * Removed automatic addition of RPATH in shared libraries and executables,
3012 as this was a remainder from OpenSSL 1.0.x and isn't needed any more.
3016 ### Changes between 1.1.0a and 1.1.0b [26 Sep 2016]
3018 * Fix Use After Free for large message sizes
3020 The patch applied to address CVE-2016-6307 resulted in an issue where if a
3021 message larger than approx 16k is received then the underlying buffer to
3022 store the incoming message is reallocated and moved. Unfortunately a
3023 dangling pointer to the old location is left which results in an attempt to
3024 write to the previously freed location. This is likely to result in a
3025 crash, however it could potentially lead to execution of arbitrary code.
3027 This issue only affects OpenSSL 1.1.0a.
3029 This issue was reported to OpenSSL by Robert Święcki.
3034 ### Changes between 1.1.0 and 1.1.0a [22 Sep 2016]
3036 * OCSP Status Request extension unbounded memory growth
3038 A malicious client can send an excessively large OCSP Status Request
3039 extension. If that client continually requests renegotiation, sending a
3040 large OCSP Status Request extension each time, then there will be unbounded
3041 memory growth on the server. This will eventually lead to a Denial Of
3042 Service attack through memory exhaustion. Servers with a default
3043 configuration are vulnerable even if they do not support OCSP. Builds using
3044 the "no-ocsp" build time option are not affected.
3046 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
3051 * SSL_peek() hang on empty record
3053 OpenSSL 1.1.0 SSL/TLS will hang during a call to SSL_peek() if the peer
3054 sends an empty record. This could be exploited by a malicious peer in a
3055 Denial Of Service attack.
3057 This issue was reported to OpenSSL by Alex Gaynor.
3062 * Excessive allocation of memory in tls_get_message_header() and
3063 dtls1_preprocess_fragment()
3065 A (D)TLS message includes 3 bytes for its length in the header for the
3066 message. This would allow for messages up to 16Mb in length. Messages of
3067 this length are excessive and OpenSSL includes a check to ensure that a
3068 peer is sending reasonably sized messages in order to avoid too much memory
3069 being consumed to service a connection. A flaw in the logic of version
3070 1.1.0 means that memory for the message is allocated too early, prior to
3071 the excessive message length check. Due to way memory is allocated in
3072 OpenSSL this could mean an attacker could force up to 21Mb to be allocated
3073 to service a connection. This could lead to a Denial of Service through
3074 memory exhaustion. However, the excessive message length check still takes
3075 place, and this would cause the connection to immediately fail. Assuming
3076 that the application calls SSL_free() on the failed connection in a timely
3077 manner then the 21Mb of allocated memory will then be immediately freed
3078 again. Therefore the excessive memory allocation will be transitory in
3079 nature. This then means that there is only a security impact if:
3081 1) The application does not call SSL_free() in a timely manner in the event
3082 that the connection fails
3084 2) The application is working in a constrained environment where there is
3085 very little free memory
3087 3) The attacker initiates multiple connection attempts such that there are
3088 multiple connections in a state where memory has been allocated for the
3089 connection; SSL_free() has not yet been called; and there is insufficient
3090 memory to service the multiple requests.
3092 Except in the instance of (1) above any Denial Of Service is likely to be
3093 transitory because as soon as the connection fails the memory is
3094 subsequently freed again in the SSL_free() call. However there is an
3095 increased risk during this period of application crashes due to the lack of
3096 memory - which would then mean a more serious Denial of Service.
3098 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
3099 (CVE-2016-6307 and CVE-2016-6308)
3103 * solaris-x86-cc, i.e. 32-bit configuration with vendor compiler,
3104 had to be removed. Primary reason is that vendor assembler can't
3105 assemble our modules with -KPIC flag. As result it, assembly
3106 support, was not even available as option. But its lack means
3107 lack of side-channel resistant code, which is incompatible with
3108 security by todays standards. Fortunately gcc is readily available
3109 prepackaged option, which we firmly point at...
3113 ### Changes between 1.0.2h and 1.1.0 [25 Aug 2016]
3115 * Windows command-line tool supports UTF-8 opt-in option for arguments
3116 and console input. Setting OPENSSL_WIN32_UTF8 environment variable
3117 (to any value) allows Windows user to access PKCS#12 file generated
3118 with Windows CryptoAPI and protected with non-ASCII password, as well
3119 as files generated under UTF-8 locale on Linux also protected with
3124 * To mitigate the SWEET32 attack ([CVE-2016-2183]), 3DES cipher suites
3125 have been disabled by default and removed from DEFAULT, just like RC4.
3126 See the RC4 item below to re-enable both.
3130 * The method for finding the storage location for the Windows RAND seed file
3131 has changed. First we check %RANDFILE%. If that is not set then we check
3132 the directories %HOME%, %USERPROFILE% and %SYSTEMROOT% in that order. If
3133 all else fails we fall back to C:\.
3137 * The EVP_EncryptUpdate() function has had its return type changed from void
3138 to int. A return of 0 indicates and error while a return of 1 indicates
3143 * The flags RSA_FLAG_NO_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME and
3144 DH_FLAG_NO_EXP_CONSTTIME which previously provided the ability to switch
3145 off the constant time implementation for RSA, DSA and DH have been made
3146 no-ops and deprecated.
3150 * Windows RAND implementation was simplified to only get entropy by
3151 calling CryptGenRandom(). Various other RAND-related tickets
3154 *Joseph Wylie Yandle, Rich Salz*
3156 * The stack and lhash API's were renamed to start with `OPENSSL_SK_`
3157 and `OPENSSL_LH_`, respectively. The old names are available
3158 with API compatibility. They new names are now completely documented.
3162 * Unify TYPE_up_ref(obj) methods signature.
3163 SSL_CTX_up_ref(), SSL_up_ref(), X509_up_ref(), EVP_PKEY_up_ref(),
3164 X509_CRL_up_ref(), X509_OBJECT_up_ref_count() methods are now returning an
3165 int (instead of void) like all others TYPE_up_ref() methods.
3166 So now these methods also check the return value of CRYPTO_atomic_add(),
3167 and the validity of object reference counter.
3169 *fdasilvayy@gmail.com*
3171 * With Windows Visual Studio builds, the .pdb files are installed
3172 alongside the installed libraries and executables. For a static
3173 library installation, ossl_static.pdb is the associate compiler
3174 generated .pdb file to be used when linking programs.
3178 * Remove openssl.spec. Packaging files belong with the packagers.
3182 * Automatic Darwin/OSX configuration has had a refresh, it will now
3183 recognise x86_64 architectures automatically. You can still decide
3184 to build for a different bitness with the environment variable
3185 KERNEL_BITS (can be 32 or 64), for example:
3187 KERNEL_BITS=32 ./config
3191 * Change default algorithms in pkcs8 utility to use PKCS#5 v2.0,
3192 256 bit AES and HMAC with SHA256.
3196 * Remove support for MIPS o32 ABI on IRIX (and IRIX only).
3200 * Triple-DES ciphers have been moved from HIGH to MEDIUM.
3204 * To enable users to have their own config files and build file templates,
3205 Configure looks in the directory indicated by the environment variable
3206 OPENSSL_LOCAL_CONFIG_DIR as well as the in-source Configurations/
3207 directory. On VMS, OPENSSL_LOCAL_CONFIG_DIR is expected to be a logical
3208 name and is used as is.
3212 * The following datatypes were made opaque: X509_OBJECT, X509_STORE_CTX,
3213 X509_STORE, X509_LOOKUP, and X509_LOOKUP_METHOD. The unused type
3214 X509_CERT_FILE_CTX was removed.
3218 * "shared" builds are now the default. To create only static libraries use
3219 the "no-shared" Configure option.
3223 * Remove the no-aes, no-hmac, no-rsa, no-sha and no-md5 Configure options.
3224 All of these option have not worked for some while and are fundamental
3229 * Make various cleanup routines no-ops and mark them as deprecated. Most
3230 global cleanup functions are no longer required because they are handled
3231 via auto-deinit (see OPENSSL_init_crypto and OPENSSL_init_ssl man pages).
3232 Explicitly de-initing can cause problems (e.g. where a library that uses
3233 OpenSSL de-inits, but an application is still using it). The affected
3234 functions are CONF_modules_free(), ENGINE_cleanup(), OBJ_cleanup(),
3235 EVP_cleanup(), BIO_sock_cleanup(), CRYPTO_cleanup_all_ex_data(),
3236 RAND_cleanup(), SSL_COMP_free_compression_methods(), ERR_free_strings() and
3237 COMP_zlib_cleanup().
3241 * --strict-warnings no longer enables runtime debugging options
3242 such as REF_DEBUG. Instead, debug options are automatically
3243 enabled with '--debug' builds.
3245 *Andy Polyakov, Emilia Käsper*
3247 * Made DH and DH_METHOD opaque. The structures for managing DH objects
3248 have been moved out of the public header files. New functions for managing
3249 these have been added.
3253 * Made RSA and RSA_METHOD opaque. The structures for managing RSA
3254 objects have been moved out of the public header files. New
3255 functions for managing these have been added.
3259 * Made DSA and DSA_METHOD opaque. The structures for managing DSA objects
3260 have been moved out of the public header files. New functions for managing
3261 these have been added.
3265 * Made BIO and BIO_METHOD opaque. The structures for managing BIOs have been
3266 moved out of the public header files. New functions for managing these
3271 * Removed no-rijndael as a config option. Rijndael is an old name for AES.
3275 * Removed the mk1mf build scripts.
3279 * Headers are now wrapped, if necessary, with OPENSSL_NO_xxx, so
3280 it is always safe to #include a header now.
3284 * Removed the aged BC-32 config and all its supporting scripts
3288 * Removed support for Ultrix, Netware, and OS/2.
3292 * Add support for HKDF.
3294 *Alessandro Ghedini*
3296 * Add support for blake2b and blake2s
3300 * Added support for "pipelining". Ciphers that have the
3301 EVP_CIPH_FLAG_PIPELINE flag set have a capability to process multiple
3302 encryptions/decryptions simultaneously. There are currently no built-in
3303 ciphers with this property but the expectation is that engines will be able
3304 to offer it to significantly improve throughput. Support has been extended
3305 into libssl so that multiple records for a single connection can be
3306 processed in one go (for >=TLS 1.1).
3310 * Added the AFALG engine. This is an async capable engine which is able to
3311 offload work to the Linux kernel. In this initial version it only supports
3312 AES128-CBC. The kernel must be version 4.1.0 or greater.
3316 * OpenSSL now uses a new threading API. It is no longer necessary to
3317 set locking callbacks to use OpenSSL in a multi-threaded environment. There
3318 are two supported threading models: pthreads and windows threads. It is
3319 also possible to configure OpenSSL at compile time for "no-threads". The
3320 old threading API should no longer be used. The functions have been
3321 replaced with "no-op" compatibility macros.
3323 *Alessandro Ghedini, Matt Caswell*
3325 * Modify behavior of ALPN to invoke callback after SNI/servername
3326 callback, such that updates to the SSL_CTX affect ALPN.
3330 * Add SSL_CIPHER queries for authentication and key-exchange.
3334 * Changes to the DEFAULT cipherlist:
3335 - Prefer (EC)DHE handshakes over plain RSA.
3336 - Prefer AEAD ciphers over legacy ciphers.
3337 - Prefer ECDSA over RSA when both certificates are available.
3338 - Prefer TLSv1.2 ciphers/PRF.
3339 - Remove DSS, SEED, IDEA, CAMELLIA, and AES-CCM from the
3344 * Change the ECC default curve list to be this, in order: x25519,
3345 secp256r1, secp521r1, secp384r1.
3349 * RC4 based libssl ciphersuites are now classed as "weak" ciphers and are
3350 disabled by default. They can be re-enabled using the
3351 enable-weak-ssl-ciphers option to Configure.
3355 * If the server has ALPN configured, but supports no protocols that the
3356 client advertises, send a fatal "no_application_protocol" alert.
3357 This behaviour is SHALL in RFC 7301, though it isn't universally
3358 implemented by other servers.
3362 * Add X25519 support.
3363 Add ASN.1 and EVP_PKEY methods for X25519. This includes support
3364 for public and private key encoding using the format documented in
3365 draft-ietf-curdle-pkix-02. The corresponding EVP_PKEY method supports
3366 key generation and key derivation.
3368 TLS support complies with draft-ietf-tls-rfc4492bis-08 and uses
3373 * Deprecate SRP_VBASE_get_by_user.
3374 SRP_VBASE_get_by_user had inconsistent memory management behaviour.
3375 In order to fix an unavoidable memory leak ([CVE-2016-0798]),
3376 SRP_VBASE_get_by_user was changed to ignore the "fake user" SRP
3377 seed, even if the seed is configured.
3379 Users should use SRP_VBASE_get1_by_user instead. Note that in
3380 SRP_VBASE_get1_by_user, caller must free the returned value. Note
3381 also that even though configuring the SRP seed attempts to hide
3382 invalid usernames by continuing the handshake with fake
3383 credentials, this behaviour is not constant time and no strong
3384 guarantees are made that the handshake is indistinguishable from
3385 that of a valid user.
3389 * Configuration change; it's now possible to build dynamic engines
3390 without having to build shared libraries and vice versa. This
3391 only applies to the engines in `engines/`, those in `crypto/engine/`
3392 will always be built into libcrypto (i.e. "static").
3394 Building dynamic engines is enabled by default; to disable, use
3395 the configuration option "disable-dynamic-engine".
3397 The only requirements for building dynamic engines are the
3398 presence of the DSO module and building with position independent
3399 code, so they will also automatically be disabled if configuring
3400 with "disable-dso" or "disable-pic".
3402 The macros OPENSSL_NO_STATIC_ENGINE and OPENSSL_NO_DYNAMIC_ENGINE
3403 are also taken away from openssl/opensslconf.h, as they are
3408 * Configuration change; if there is a known flag to compile
3409 position independent code, it will always be applied on the
3410 libcrypto and libssl object files, and never on the application
3411 object files. This means other libraries that use routines from
3412 libcrypto / libssl can be made into shared libraries regardless
3413 of how OpenSSL was configured.
3415 If this isn't desirable, the configuration options "disable-pic"
3416 or "no-pic" can be used to disable the use of PIC. This will
3417 also disable building shared libraries and dynamic engines.
3421 * Removed JPAKE code. It was experimental and has no wide use.
3425 * The INSTALL_PREFIX Makefile variable has been renamed to
3426 DESTDIR. That makes for less confusion on what this variable
3427 is for. Also, the configuration option --install_prefix is
3432 * Heartbeat for TLS has been removed and is disabled by default
3433 for DTLS; configure with enable-heartbeats. Code that uses the
3434 old #define's might need to be updated.
3436 *Emilia Käsper, Rich Salz*
3438 * Rename REF_CHECK to REF_DEBUG.
3442 * New "unified" build system
3444 The "unified" build system is aimed to be a common system for all
3445 platforms we support. With it comes new support for VMS.
3447 This system builds supports building in a different directory tree
3448 than the source tree. It produces one Makefile (for unix family
3449 or lookalikes), or one descrip.mms (for VMS).
3451 The source of information to make the Makefile / descrip.mms is
3452 small files called 'build.info', holding the necessary
3453 information for each directory with source to compile, and a
3454 template in Configurations, like unix-Makefile.tmpl or
3457 With this change, the library names were also renamed on Windows
3458 and on VMS. They now have names that are closer to the standard
3459 on Unix, and include the major version number, and in certain
3460 cases, the architecture they are built for. See "Notes on shared
3461 libraries" in INSTALL.
3463 We rely heavily on the perl module Text::Template.
3467 * Added support for auto-initialisation and de-initialisation of the library.
3468 OpenSSL no longer requires explicit init or deinit routines to be called,
3469 except in certain circumstances. See the OPENSSL_init_crypto() and
3470 OPENSSL_init_ssl() man pages for further information.
3474 * The arguments to the DTLSv1_listen function have changed. Specifically the
3475 "peer" argument is now expected to be a BIO_ADDR object.
3477 * Rewrite of BIO networking library. The BIO library lacked consistent
3478 support of IPv6, and adding it required some more extensive
3479 modifications. This introduces the BIO_ADDR and BIO_ADDRINFO types,
3480 which hold all types of addresses and chains of address information.
3481 It also introduces a new API, with functions like BIO_socket,
3482 BIO_connect, BIO_listen, BIO_lookup and a rewrite of BIO_accept.
3483 The source/sink BIOs BIO_s_connect, BIO_s_accept and BIO_s_datagram
3484 have been adapted accordingly.
3488 * RSA_padding_check_PKCS1_type_1 now accepts inputs with and without
3493 * CRIME protection: disable compression by default, even if OpenSSL is
3494 compiled with zlib enabled. Applications can still enable compression
3495 by calling SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION), or by
3496 using the SSL_CONF library to configure compression.
3500 * The signature of the session callback configured with
3501 SSL_CTX_sess_set_get_cb was changed. The read-only input buffer
3502 was explicitly marked as `const unsigned char*` instead of
3507 * Always DPURIFY. Remove the use of uninitialized memory in the
3508 RNG, and other conditional uses of DPURIFY. This makes -DPURIFY a no-op.
3512 * Removed many obsolete configuration items, including
3513 DES_PTR, DES_RISC1, DES_RISC2, DES_INT
3514 MD2_CHAR, MD2_INT, MD2_LONG
3516 IDEA_SHORT, IDEA_LONG
3517 RC2_SHORT, RC2_LONG, RC4_LONG, RC4_CHUNK, RC4_INDEX
3519 *Rich Salz, with advice from Andy Polyakov*
3521 * Many BN internals have been moved to an internal header file.
3523 *Rich Salz with help from Andy Polyakov*
3525 * Configuration and writing out the results from it has changed.
3526 Files such as Makefile include/openssl/opensslconf.h and are now
3527 produced through general templates, such as Makefile.in and
3528 crypto/opensslconf.h.in and some help from the perl module
3531 Also, the center of configuration information is no longer
3532 Makefile. Instead, Configure produces a perl module in
3533 configdata.pm which holds most of the config data (in the hash
3534 table %config), the target data that comes from the target
3535 configuration in one of the `Configurations/*.conf` files (in
3540 * To clarify their intended purposes, the Configure options
3541 --prefix and --openssldir change their semantics, and become more
3542 straightforward and less interdependent.
3544 --prefix shall be used exclusively to give the location INSTALLTOP
3545 where programs, scripts, libraries, include files and manuals are
3546 going to be installed. The default is now /usr/local.
3548 --openssldir shall be used exclusively to give the default
3549 location OPENSSLDIR where certificates, private keys, CRLs are
3550 managed. This is also where the default openssl.cnf gets
3552 If the directory given with this option is a relative path, the
3553 values of both the --prefix value and the --openssldir value will
3554 be combined to become OPENSSLDIR.
3555 The default for --openssldir is INSTALLTOP/ssl.
3557 Anyone who uses --openssldir to specify where OpenSSL is to be
3558 installed MUST change to use --prefix instead.
3562 * The GOST engine was out of date and therefore it has been removed. An up
3563 to date GOST engine is now being maintained in an external repository.
3564 See: <https://wiki.openssl.org/index.php/Binaries>. Libssl still retains
3565 support for GOST ciphersuites (these are only activated if a GOST engine
3570 * EGD is no longer supported by default; use enable-egd when
3573 *Ben Kaduk and Rich Salz*
3575 * The distribution now has Makefile.in files, which are used to
3576 create Makefile's when Configure is run. *Configure must be run
3577 before trying to build now.*
3581 * The return value for SSL_CIPHER_description() for error conditions
3586 * Support for RFC6698/RFC7671 DANE TLSA peer authentication.
3588 Obtaining and performing DNSSEC validation of TLSA records is
3589 the application's responsibility. The application provides
3590 the TLSA records of its choice to OpenSSL, and these are then
3591 used to authenticate the peer.
3593 The TLSA records need not even come from DNS. They can, for
3594 example, be used to implement local end-entity certificate or
3595 trust-anchor "pinning", where the "pin" data takes the form
3596 of TLSA records, which can augment or replace verification
3597 based on the usual WebPKI public certification authorities.
3601 * Revert default OPENSSL_NO_DEPRECATED setting. Instead OpenSSL
3602 continues to support deprecated interfaces in default builds.
3603 However, applications are strongly advised to compile their
3604 source files with -DOPENSSL_API_COMPAT=0x10100000L, which hides
3605 the declarations of all interfaces deprecated in 0.9.8, 1.0.0
3606 or the 1.1.0 releases.
3608 In environments in which all applications have been ported to
3609 not use any deprecated interfaces OpenSSL's Configure script
3610 should be used with the --api=1.1.0 option to entirely remove
3611 support for the deprecated features from the library and
3612 unconditionally disable them in the installed headers.
3613 Essentially the same effect can be achieved with the "no-deprecated"
3614 argument to Configure, except that this will always restrict
3615 the build to just the latest API, rather than a fixed API
3618 As applications are ported to future revisions of the API,
3619 they should update their compile-time OPENSSL_API_COMPAT define
3620 accordingly, but in most cases should be able to continue to
3621 compile with later releases.
3623 The OPENSSL_API_COMPAT versions for 1.0.0, and 0.9.8 are
3624 0x10000000L and 0x00908000L, respectively. However those
3625 versions did not support the OPENSSL_API_COMPAT feature, and
3626 so applications are not typically tested for explicit support
3627 of just the undeprecated features of either release.
3631 * Add support for setting the minimum and maximum supported protocol.
3632 It can bet set via the SSL_set_min_proto_version() and
3633 SSL_set_max_proto_version(), or via the SSL_CONF's MinProtocol and
3634 MaxProtocol. It's recommended to use the new APIs to disable
3635 protocols instead of disabling individual protocols using
3636 SSL_set_options() or SSL_CONF's Protocol. This change also
3637 removes support for disabling TLS 1.2 in the OpenSSL TLS
3638 client at compile time by defining OPENSSL_NO_TLS1_2_CLIENT.
3642 * Support for ChaCha20 and Poly1305 added to libcrypto and libssl.
3646 * New EC_KEY_METHOD, this replaces the older ECDSA_METHOD and ECDH_METHOD
3647 and integrates ECDSA and ECDH functionality into EC. Implementations can
3648 now redirect key generation and no longer need to convert to or from
3651 Note: the ecdsa.h and ecdh.h headers are now no longer needed and just
3652 include the ec.h header file instead.
3656 * Remove support for all 40 and 56 bit ciphers. This includes all the export
3657 ciphers who are no longer supported and drops support the ephemeral RSA key
3658 exchange. The LOW ciphers currently doesn't have any ciphers in it.
3662 * Made EVP_MD_CTX, EVP_MD, EVP_CIPHER_CTX, EVP_CIPHER and HMAC_CTX
3663 opaque. For HMAC_CTX, the following constructors and destructors
3666 HMAC_CTX *HMAC_CTX_new(void);
3667 void HMAC_CTX_free(HMAC_CTX *ctx);
3669 For EVP_MD and EVP_CIPHER, complete APIs to create, fill and
3670 destroy such methods has been added. See EVP_MD_meth_new(3) and
3671 EVP_CIPHER_meth_new(3) for documentation.
3674 1) `EVP_MD_CTX_cleanup()`, `EVP_CIPHER_CTX_cleanup()` and
3675 `HMAC_CTX_cleanup()` were removed. `HMAC_CTX_reset()` and
3676 `EVP_MD_CTX_reset()` should be called instead to reinitialise
3677 an already created structure.
3678 2) For consistency with the majority of our object creators and
3679 destructors, `EVP_MD_CTX_(create|destroy)` were renamed to
3680 `EVP_MD_CTX_(new|free)`. The old names are retained as macros
3681 for deprecated builds.
3685 * Added ASYNC support. Libcrypto now includes the async sub-library to enable
3686 cryptographic operations to be performed asynchronously as long as an
3687 asynchronous capable engine is used. See the ASYNC_start_job() man page for
3688 further details. Libssl has also had this capability integrated with the
3689 introduction of the new mode SSL_MODE_ASYNC and associated error
3690 SSL_ERROR_WANT_ASYNC. See the SSL_CTX_set_mode() and SSL_get_error() man
3691 pages. This work was developed in partnership with Intel Corp.
3695 * SSL_{CTX_}set_ecdh_auto() has been removed and ECDH is support is
3696 always enabled now. If you want to disable the support you should
3697 exclude it using the list of supported ciphers. This also means that the
3698 "-no_ecdhe" option has been removed from s_server.
3702 * SSL_{CTX}_set_tmp_ecdh() which can set 1 EC curve now internally calls
3703 SSL_{CTX_}set1_curves() which can set a list.
3707 * Remove support for SSL_{CTX_}set_tmp_ecdh_callback(). You should set the
3708 curve you want to support using SSL_{CTX_}set1_curves().
3712 * State machine rewrite. The state machine code has been significantly
3713 refactored in order to remove much duplication of code and solve issues
3714 with the old code (see [ssl/statem/README.md](ssl/statem/README.md) for
3715 further details). This change does have some associated API changes.
3716 Notably the SSL_state() function has been removed and replaced by
3717 SSL_get_state which now returns an "OSSL_HANDSHAKE_STATE" instead of an int.
3718 SSL_set_state() has been removed altogether. The previous handshake states
3719 defined in ssl.h and ssl3.h have also been removed.
3723 * All instances of the string "ssleay" in the public API were replaced
3724 with OpenSSL (case-matching; e.g., OPENSSL_VERSION for #define's)
3725 Some error codes related to internal RSA_eay API's were renamed.
3729 * The demo files in crypto/threads were moved to demo/threads.
3733 * Removed obsolete engines: 4758cca, aep, atalla, cswift, nuron, gmp,
3736 *Matt Caswell, Rich Salz*
3738 * New ASN.1 embed macro.
3740 New ASN.1 macro ASN1_EMBED. This is the same as ASN1_SIMPLE except the
3741 structure is not allocated: it is part of the parent. That is instead of
3749 This reduces memory fragmentation and make it impossible to accidentally
3750 set a mandatory field to NULL.
3752 This currently only works for some fields specifically a SEQUENCE, CHOICE,
3753 or ASN1_STRING type which is part of a parent SEQUENCE. Since it is
3754 equivalent to ASN1_SIMPLE it cannot be tagged, OPTIONAL, SET OF or
3759 * Remove EVP_CHECK_DES_KEY, a compile-time option that never compiled.
3763 * Removed DES and RC4 ciphersuites from DEFAULT. Also removed RC2 although
3764 in 1.0.2 EXPORT was already removed and the only RC2 ciphersuite is also
3765 an EXPORT one. COMPLEMENTOFDEFAULT has been updated accordingly to add
3766 DES and RC4 ciphersuites.
3770 * Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
3771 This changes the decoding behaviour for some invalid messages,
3772 though the change is mostly in the more lenient direction, and
3773 legacy behaviour is preserved as much as possible.
3777 * Fix no-stdio build.
3778 *David Woodhouse <David.Woodhouse@intel.com> and also*
3779 *Ivan Nestlerode <ivan.nestlerode@sonos.com>*
3781 * New testing framework
3782 The testing framework has been largely rewritten and is now using
3783 perl and the perl modules Test::Harness and an extended variant of
3784 Test::More called OpenSSL::Test to do its work. All test scripts in
3785 test/ have been rewritten into test recipes, and all direct calls to
3786 executables in test/Makefile have become individual recipes using the
3787 simplified testing OpenSSL::Test::Simple.
3789 For documentation on our testing modules, do:
3791 perldoc test/testlib/OpenSSL/Test/Simple.pm
3792 perldoc test/testlib/OpenSSL/Test.pm
3796 * Revamped memory debug; only -DCRYPTO_MDEBUG and -DCRYPTO_MDEBUG_ABORT
3797 are used; the latter aborts on memory leaks (usually checked on exit).
3798 Some undocumented "set malloc, etc., hooks" functions were removed
3799 and others were changed. All are now documented.
3803 * In DSA_generate_parameters_ex, if the provided seed is too short,
3806 *Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>*
3808 * Rewrite PSK to support ECDHE_PSK, DHE_PSK and RSA_PSK. Add ciphersuites
3809 from RFC4279, RFC4785, RFC5487, RFC5489.
3811 Thanks to Christian J. Dietrich and Giuseppe D'Angelo for the
3812 original RSA_PSK patch.
3816 * Dropped support for the SSL3_FLAGS_DELAY_CLIENT_FINISHED flag. This SSLeay
3817 era flag was never set throughout the codebase (only read). Also removed
3818 SSL3_FLAGS_POP_BUFFER which was only used if
3819 SSL3_FLAGS_DELAY_CLIENT_FINISHED was also set.
3823 * Changed the default name options in the "ca", "crl", "req" and "x509"
3824 to be "oneline" instead of "compat".
3828 * Remove SSL_OP_TLS_BLOCK_PADDING_BUG. This is SSLeay legacy, we're
3829 not aware of clients that still exhibit this bug, and the workaround
3830 hasn't been working properly for a while.
3834 * The return type of BIO_number_read() and BIO_number_written() as well as
3835 the corresponding num_read and num_write members in the BIO structure has
3836 changed from unsigned long to uint64_t. On platforms where an unsigned
3837 long is 32 bits (e.g. Windows) these counters could overflow if >4Gb is
3842 * Given the pervasive nature of TLS extensions it is inadvisable to run
3843 OpenSSL without support for them. It also means that maintaining
3844 the OPENSSL_NO_TLSEXT option within the code is very invasive (and probably
3845 not well tested). Therefore the OPENSSL_NO_TLSEXT option has been removed.
3849 * Removed support for the two export grade static DH ciphersuites
3850 EXP-DH-RSA-DES-CBC-SHA and EXP-DH-DSS-DES-CBC-SHA. These two ciphersuites
3851 were newly added (along with a number of other static DH ciphersuites) to
3852 1.0.2. However the two export ones have *never* worked since they were
3853 introduced. It seems strange in any case to be adding new export
3854 ciphersuites, and given "logjam" it also does not seem correct to fix them.
3858 * Version negotiation has been rewritten. In particular SSLv23_method(),
3859 SSLv23_client_method() and SSLv23_server_method() have been deprecated,
3860 and turned into macros which simply call the new preferred function names
3861 TLS_method(), TLS_client_method() and TLS_server_method(). All new code
3862 should use the new names instead. Also as part of this change the ssl23.h
3863 header file has been removed.
3867 * Support for Kerberos ciphersuites in TLS (RFC2712) has been removed. This
3868 code and the associated standard is no longer considered fit-for-purpose.
3872 * RT2547 was closed. When generating a private key, try to make the
3873 output file readable only by the owner. This behavior change might
3874 be noticeable when interacting with other software.
3876 * Documented all exdata functions. Added CRYPTO_free_ex_index.
3881 * Added HTTP GET support to the ocsp command.
3885 * Changed default digest for the dgst and enc commands from MD5 to
3890 * RAND_pseudo_bytes has been deprecated. Users should use RAND_bytes instead.
3894 * Added support for TLS extended master secret from
3895 draft-ietf-tls-session-hash-03.txt. Thanks for Alfredo Pironti for an
3896 initial patch which was a great help during development.
3900 * All libssl internal structures have been removed from the public header
3901 files, and the OPENSSL_NO_SSL_INTERN option has been removed (since it is
3902 now redundant). Users should not attempt to access internal structures
3903 directly. Instead they should use the provided API functions.
3907 * config has been changed so that by default OPENSSL_NO_DEPRECATED is used.
3908 Access to deprecated functions can be re-enabled by running config with
3909 "enable-deprecated". In addition applications wishing to use deprecated
3910 functions must define OPENSSL_USE_DEPRECATED. Note that this new behaviour
3911 will, by default, disable some transitive includes that previously existed
3912 in the header files (e.g. ec.h will no longer, by default, include bn.h)
3916 * Added support for OCB mode. OpenSSL has been granted a patent license
3917 compatible with the OpenSSL license for use of OCB. Details are available
3918 at <https://www.openssl.org/source/OCB-patent-grant-OpenSSL.pdf>. Support
3919 for OCB can be removed by calling config with no-ocb.
3923 * SSLv2 support has been removed. It still supports receiving a SSLv2
3924 compatible client hello.
3928 * Increased the minimal RSA keysize from 256 to 512 bits [Rich Salz],
3929 done while fixing the error code for the key-too-small case.
3931 *Annie Yousar <a.yousar@informatik.hu-berlin.de>*
3933 * CA.sh has been removed; use CA.pl instead.
3937 * Removed old DES API.
3941 * Remove various unsupported platforms:
3947 Sinix/ReliantUNIX RM400
3952 16-bit platforms such as WIN16
3956 * Clean up OPENSSL_NO_xxx #define's
3957 - Use setbuf() and remove OPENSSL_NO_SETVBUF_IONBF
3958 - Rename OPENSSL_SYSNAME_xxx to OPENSSL_SYS_xxx
3959 - OPENSSL_NO_EC{DH,DSA} merged into OPENSSL_NO_EC
3960 - OPENSSL_NO_RIPEMD160, OPENSSL_NO_RIPEMD merged into OPENSSL_NO_RMD160
3961 - OPENSSL_NO_FP_API merged into OPENSSL_NO_STDIO
3962 - Remove OPENSSL_NO_BIO OPENSSL_NO_BUFFER OPENSSL_NO_CHAIN_VERIFY
3963 OPENSSL_NO_EVP OPENSSL_NO_FIPS_ERR OPENSSL_NO_HASH_COMP
3964 OPENSSL_NO_LHASH OPENSSL_NO_OBJECT OPENSSL_NO_SPEED OPENSSL_NO_STACK
3965 OPENSSL_NO_X509 OPENSSL_NO_X509_VERIFY
3966 - Remove MS_STATIC; it's a relic from platforms <32 bits.
3970 * Cleaned up dead code
3971 Remove all but one '#ifdef undef' which is to be looked at.
3975 * Clean up calling of xxx_free routines.
3976 Just like free(), fix most of the xxx_free routines to accept
3977 NULL. Remove the non-null checks from callers. Save much code.
3981 * Add secure heap for storage of private keys (when possible).
3982 Add BIO_s_secmem(), CBIGNUM, etc.
3983 Contributed by Akamai Technologies under our Corporate CLA.
3987 * Experimental support for a new, fast, unbiased prime candidate generator,
3988 bn_probable_prime_dh_coprime(). Not currently used by any prime generator.
3990 *Felix Laurie von Massenbach <felix@erbridge.co.uk>*
3992 * New output format NSS in the sess_id command line tool. This allows
3993 exporting the session id and the master key in NSS keylog format.
3995 *Martin Kaiser <martin@kaiser.cx>*
3997 * Harmonize version and its documentation. -f flag is used to display
4000 *mancha <mancha1@zoho.com>*
4002 * Fix eckey_priv_encode so it immediately returns an error upon a failure
4003 in i2d_ECPrivateKey. Thanks to Ted Unangst for feedback on this issue.
4005 *mancha <mancha1@zoho.com>*
4007 * Fix some double frees. These are not thought to be exploitable.
4009 *mancha <mancha1@zoho.com>*
4011 * A missing bounds check in the handling of the TLS heartbeat extension
4012 can be used to reveal up to 64k of memory to a connected client or
4015 Thanks for Neel Mehta of Google Security for discovering this bug and to
4016 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
4017 preparing the fix ([CVE-2014-0160])
4019 *Adam Langley, Bodo Moeller*
4021 * Fix for the attack described in the paper "Recovering OpenSSL
4022 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
4023 by Yuval Yarom and Naomi Benger. Details can be obtained from:
4024 <http://eprint.iacr.org/2014/140>
4026 Thanks to Yuval Yarom and Naomi Benger for discovering this
4027 flaw and to Yuval Yarom for supplying a fix ([CVE-2014-0076])
4029 *Yuval Yarom and Naomi Benger*
4031 * Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
4032 this fixes a limitation in previous versions of OpenSSL.
4036 * Experimental encrypt-then-mac support.
4038 Experimental support for encrypt then mac from
4039 draft-gutmann-tls-encrypt-then-mac-02.txt
4041 To enable it set the appropriate extension number (0x42 for the test
4042 server) using e.g. -DTLSEXT_TYPE_encrypt_then_mac=0x42
4044 For non-compliant peers (i.e. just about everything) this should have no
4047 WARNING: EXPERIMENTAL, SUBJECT TO CHANGE.
4051 * Add EVP support for key wrapping algorithms, to avoid problems with
4052 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
4053 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
4054 algorithms and include tests cases.
4058 * Extend CMS code to support RSA-PSS signatures and RSA-OAEP for
4063 * Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
4064 MGF1 digest and OAEP label.
4068 * Make openssl verify return errors.
4070 *Chris Palmer <palmer@google.com> and Ben Laurie*
4072 * New function ASN1_TIME_diff to calculate the difference between two
4073 ASN1_TIME structures or one structure and the current time.
4077 * Update fips_test_suite to support multiple command line options. New
4078 test to induce all self test errors in sequence and check expected
4083 * Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and
4084 sign or verify all in one operation.
4088 * Add fips_algvs: a multicall fips utility incorporating all the algorithm
4089 test programs and fips_test_suite. Includes functionality to parse
4090 the minimal script output of fipsalgest.pl directly.
4094 * Add authorisation parameter to FIPS_module_mode_set().
4098 * Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves.
4102 * Use separate DRBG fields for internal and external flags. New function
4103 FIPS_drbg_health_check() to perform on demand health checking. Add
4104 generation tests to fips_test_suite with reduced health check interval to
4105 demonstrate periodic health checking. Add "nodh" option to
4106 fips_test_suite to skip very slow DH test.
4110 * New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers
4115 * More extensive health check for DRBG checking many more failure modes.
4116 New function FIPS_selftest_drbg_all() to handle every possible DRBG
4117 combination: call this in fips_test_suite.
4121 * Add support for canonical generation of DSA parameter 'g'. See
4124 * Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
4125 POST to handle HMAC cases.
4129 * Add functions FIPS_module_version() and FIPS_module_version_text()
4130 to return numerical and string versions of the FIPS module number.
4134 * Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
4135 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implemented
4136 outside the validated module in the FIPS capable OpenSSL.
4140 * Minor change to DRBG entropy callback semantics. In some cases
4141 there is no multiple of the block length between min_len and
4142 max_len. Allow the callback to return more than max_len bytes
4143 of entropy but discard any extra: it is the callback's responsibility
4144 to ensure that the extra data discarded does not impact the
4145 requested amount of entropy.
4149 * Add PRNG security strength checks to RSA, DSA and ECDSA using
4150 information in FIPS186-3, SP800-57 and SP800-131A.
4154 * CCM support via EVP. Interface is very similar to GCM case except we
4155 must supply all data in one chunk (i.e. no update, final) and the
4156 message length must be supplied if AAD is used. Add algorithm test
4161 * Initial version of POST overhaul. Add POST callback to allow the status
4162 of POST to be monitored and/or failures induced. Modify fips_test_suite
4163 to use callback. Always run all selftests even if one fails.
4167 * XTS support including algorithm test driver in the fips_gcmtest program.
4168 Note: this does increase the maximum key length from 32 to 64 bytes but
4169 there should be no binary compatibility issues as existing applications
4170 will never use XTS mode.
4174 * Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
4175 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
4176 performs algorithm blocking for unapproved PRNG types. Also do not
4177 set PRNG type in FIPS_mode_set(): leave this to the application.
4178 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
4179 the standard OpenSSL PRNG: set additional data to a date time vector.
4183 * Rename old X9.31 PRNG functions of the form `FIPS_rand*` to `FIPS_x931*`.
4184 This shouldn't present any incompatibility problems because applications
4185 shouldn't be using these directly and any that are will need to rethink
4186 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
4190 * Extensive self tests and health checking required by SP800-90 DRBG.
4191 Remove strength parameter from FIPS_drbg_instantiate and always
4192 instantiate at maximum supported strength.
4196 * Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
4200 * New algorithm test program fips_dhvs to handle DH primitives only testing.
4204 * New function DH_compute_key_padded() to compute a DH key and pad with
4205 leading zeroes if needed: this complies with SP800-56A et al.
4209 * Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
4210 anything, incomplete, subject to change and largely untested at present.
4214 * Modify fipscanisteronly build option to only build the necessary object
4215 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
4219 * Add experimental option FIPSSYMS to give all symbols in
4220 fipscanister.o and FIPS or fips prefix. This will avoid
4221 conflicts with future versions of OpenSSL. Add perl script
4222 util/fipsas.pl to preprocess assembly language source files
4223 and rename any affected symbols.
4227 * Add selftest checks and algorithm block of non-fips algorithms in
4228 FIPS mode. Remove DES2 from selftests.
4232 * Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
4233 return internal method without any ENGINE dependencies. Add new
4234 tiny fips sign and verify functions.
4238 * New build option no-ec2m to disable characteristic 2 code.
4242 * New build option "fipscanisteronly". This only builds fipscanister.o
4243 and (currently) associated fips utilities. Uses the file Makefile.fips
4244 instead of Makefile.org as the prototype.
4248 * Add some FIPS mode restrictions to GCM. Add internal IV generator.
4249 Update fips_gcmtest to use IV generator.
4253 * Initial, experimental EVP support for AES-GCM. AAD can be input by
4254 setting output buffer to NULL. The `*Final` function must be
4255 called although it will not retrieve any additional data. The tag
4256 can be set or retrieved with a ctrl. The IV length is by default 12
4257 bytes (96 bits) but can be set to an alternative value. If the IV
4258 length exceeds the maximum IV length (currently 16 bytes) it cannot be
4263 * New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
4264 underlying do_cipher function handles all cipher semantics itself
4265 including padding and finalisation. This is useful if (for example)
4266 an ENGINE cipher handles block padding itself. The behaviour of
4267 do_cipher is subtly changed if this flag is set: the return value
4268 is the number of characters written to the output buffer (zero is
4269 no longer an error code) or a negative error code. Also if the
4270 input buffer is NULL and length 0 finalisation should be performed.
4274 * If a candidate issuer certificate is already part of the constructed
4275 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
4279 * Improve forward-security support: add functions
4281 void SSL_CTX_set_not_resumable_session_callback(
4282 SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
4283 void SSL_set_not_resumable_session_callback(
4284 SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
4286 for use by SSL/TLS servers; the callback function will be called whenever a
4287 new session is created, and gets to decide whether the session may be
4288 cached to make it resumable (return 0) or not (return 1). (As by the
4289 SSL/TLS protocol specifications, the session_id sent by the server will be
4290 empty to indicate that the session is not resumable; also, the server will
4291 not generate RFC 4507 (RFC 5077) session tickets.)
4293 A simple reasonable callback implementation is to return is_forward_secure.
4294 This parameter will be set to 1 or 0 depending on the ciphersuite selected
4295 by the SSL/TLS server library, indicating whether it can provide forward
4298 *Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)*
4300 * New -verify_name option in command line utilities to set verification
4305 * Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
4306 Add CMAC pkey methods.
4310 * Experimental renegotiation in s_server -www mode. If the client
4311 browses /reneg connection is renegotiated. If /renegcert it is
4312 renegotiated requesting a certificate.
4316 * Add an "external" session cache for debugging purposes to s_server. This
4317 should help trace issues which normally are only apparent in deployed
4318 multi-process servers.
4322 * Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
4323 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
4324 BIO_set_cipher() and some obscure PEM functions were changed so they
4325 can now return an error. The RAND changes required a change to the
4326 RAND_METHOD structure.
4330 * New macro `__owur` for "OpenSSL Warn Unused Result". This makes use of
4331 a gcc attribute to warn if the result of a function is ignored. This
4332 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
4333 whose return value is often ignored.
4337 * New -noct, -requestct, -requirect and -ctlogfile options for s_client.
4338 These allow SCTs (signed certificate timestamps) to be requested and
4339 validated when establishing a connection.
4341 *Rob Percival <robpercival@google.com>*
4346 ### Changes between 1.0.2s and 1.0.2t [10 Sep 2019]
4348 * For built-in EC curves, ensure an EC_GROUP built from the curve name is
4349 used even when parsing explicit parameters, when loading a encoded key
4350 or calling `EC_GROUP_new_from_ecpkparameters()`/
4351 `EC_GROUP_new_from_ecparameters()`.
4352 This prevents bypass of security hardening and performance gains,
4353 especially for curves with specialized EC_METHODs.
4354 By default, if a key encoded with explicit parameters is loaded and later
4355 encoded, the output is still encoded with explicit parameters, even if
4356 internally a "named" EC_GROUP is used for computation.
4360 * Compute ECC cofactors if not provided during EC_GROUP construction. Before
4361 this change, EC_GROUP_set_generator would accept order and/or cofactor as
4362 NULL. After this change, only the cofactor parameter can be NULL. It also
4363 does some minimal sanity checks on the passed order.
4368 * Fixed a padding oracle in PKCS7_dataDecode and CMS_decrypt_set1_pkey.
4369 An attack is simple, if the first CMS_recipientInfo is valid but the
4370 second CMS_recipientInfo is chosen ciphertext. If the second
4371 recipientInfo decodes to PKCS #1 v1.5 form plaintext, the correct
4372 encryption key will be replaced by garbage, and the message cannot be
4373 decoded, but if the RSA decryption fails, the correct encryption key is
4374 used and the recipient will not notice the attack.
4375 As a work around for this potential attack the length of the decrypted
4376 key must be equal to the cipher default key length, in case the
4377 certifiate is not given and all recipientInfo are tried out.
4378 The old behaviour can be re-enabled in the CMS code by setting the
4379 CMS_DEBUG_DECRYPT flag.
4384 * Document issue with installation paths in diverse Windows builds
4386 '/usr/local/ssl' is an unsafe prefix for location to install OpenSSL
4387 binaries and run-time config file.
4392 ### Changes between 1.0.2r and 1.0.2s [28 May 2019]
4394 * Change the default RSA, DSA and DH size to 2048 bit instead of 1024.
4395 This changes the size when using the `genpkey` command when no size is given.
4396 It fixes an omission in earlier changes that changed all RSA, DSA and DH
4397 generation commands to use 2048 bits by default.
4401 * Add FIPS support for Android Arm 64-bit
4403 Support for Android Arm 64-bit was added to the OpenSSL FIPS Object
4404 Module in Version 2.0.10. For some reason, the corresponding target
4405 'android64-aarch64' was missing OpenSSL 1.0.2, whence it could not be
4406 built with FIPS support on Android Arm 64-bit. This omission has been
4409 *Matthias St. Pierre*
4411 ### Changes between 1.0.2q and 1.0.2r [26 Feb 2019]
4413 * 0-byte record padding oracle
4415 If an application encounters a fatal protocol error and then calls
4416 SSL_shutdown() twice (once to send a close_notify, and once to receive one)
4417 then OpenSSL can respond differently to the calling application if a 0 byte
4418 record is received with invalid padding compared to if a 0 byte record is
4419 received with an invalid MAC. If the application then behaves differently
4420 based on that in a way that is detectable to the remote peer, then this
4421 amounts to a padding oracle that could be used to decrypt data.
4423 In order for this to be exploitable "non-stitched" ciphersuites must be in
4424 use. Stitched ciphersuites are optimised implementations of certain
4425 commonly used ciphersuites. Also the application must call SSL_shutdown()
4426 twice even if a protocol error has occurred (applications should not do
4427 this but some do anyway).
4429 This issue was discovered by Juraj Somorovsky, Robert Merget and Nimrod
4430 Aviram, with additional investigation by Steven Collison and Andrew
4431 Hourselt. It was reported to OpenSSL on 10th December 2018.
4436 * Move strictness check from EVP_PKEY_asn1_new() to EVP_PKEY_asn1_add0().
4440 ### Changes between 1.0.2p and 1.0.2q [20 Nov 2018]
4442 * Microarchitecture timing vulnerability in ECC scalar multiplication
4444 OpenSSL ECC scalar multiplication, used in e.g. ECDSA and ECDH, has been
4445 shown to be vulnerable to a microarchitecture timing side channel attack.
4446 An attacker with sufficient access to mount local timing attacks during
4447 ECDSA signature generation could recover the private key.
4449 This issue was reported to OpenSSL on 26th October 2018 by Alejandro
4450 Cabrera Aldaya, Billy Brumley, Sohaib ul Hassan, Cesar Pereida Garcia and
4456 * Timing vulnerability in DSA signature generation
4458 The OpenSSL DSA signature algorithm has been shown to be vulnerable to a
4459 timing side channel attack. An attacker could use variations in the signing
4460 algorithm to recover the private key.
4462 This issue was reported to OpenSSL on 16th October 2018 by Samuel Weiser.
4467 * Resolve a compatibility issue in EC_GROUP handling with the FIPS Object
4468 Module, accidentally introduced while backporting security fixes from the
4469 development branch and hindering the use of ECC in FIPS mode.
4473 ### Changes between 1.0.2o and 1.0.2p [14 Aug 2018]
4475 * Client DoS due to large DH parameter
4477 During key agreement in a TLS handshake using a DH(E) based ciphersuite a
4478 malicious server can send a very large prime value to the client. This will
4479 cause the client to spend an unreasonably long period of time generating a
4480 key for this prime resulting in a hang until the client has finished. This
4481 could be exploited in a Denial Of Service attack.
4483 This issue was reported to OpenSSL on 5th June 2018 by Guido Vranken
4488 * Cache timing vulnerability in RSA Key Generation
4490 The OpenSSL RSA Key generation algorithm has been shown to be vulnerable to
4491 a cache timing side channel attack. An attacker with sufficient access to
4492 mount cache timing attacks during the RSA key generation process could
4493 recover the private key.
4495 This issue was reported to OpenSSL on 4th April 2018 by Alejandro Cabrera
4496 Aldaya, Billy Brumley, Cesar Pereida Garcia and Luis Manuel Alvarez Tapia.
4501 * Make EVP_PKEY_asn1_new() a bit stricter about its input. A NULL pem_str
4502 parameter is no longer accepted, as it leads to a corrupt table. NULL
4503 pem_str is reserved for alias entries only.
4507 * Revert blinding in ECDSA sign and instead make problematic addition
4508 length-invariant. Switch even to fixed-length Montgomery multiplication.
4512 * Change generating and checking of primes so that the error rate of not
4513 being prime depends on the intended use based on the size of the input.
4514 For larger primes this will result in more rounds of Miller-Rabin.
4515 The maximal error rate for primes with more than 1080 bits is lowered
4518 *Kurt Roeckx, Annie Yousar*
4520 * Increase the number of Miller-Rabin rounds for DSA key generating to 64.
4524 * Add blinding to ECDSA and DSA signatures to protect against side channel
4525 attacks discovered by Keegan Ryan (NCC Group).
4529 * When unlocking a pass phrase protected PEM file or PKCS#8 container, we
4530 now allow empty (zero character) pass phrases.
4534 * Certificate time validation (X509_cmp_time) enforces stricter
4535 compliance with RFC 5280. Fractional seconds and timezone offsets
4536 are no longer allowed.
4540 ### Changes between 1.0.2n and 1.0.2o [27 Mar 2018]
4542 * Constructed ASN.1 types with a recursive definition could exceed the stack
4544 Constructed ASN.1 types with a recursive definition (such as can be found
4545 in PKCS7) could eventually exceed the stack given malicious input with
4546 excessive recursion. This could result in a Denial Of Service attack. There
4547 are no such structures used within SSL/TLS that come from untrusted sources
4548 so this is considered safe.
4550 This issue was reported to OpenSSL on 4th January 2018 by the OSS-fuzz
4556 ### Changes between 1.0.2m and 1.0.2n [7 Dec 2017]
4558 * Read/write after SSL object in error state
4560 OpenSSL 1.0.2 (starting from version 1.0.2b) introduced an "error state"
4561 mechanism. The intent was that if a fatal error occurred during a handshake
4562 then OpenSSL would move into the error state and would immediately fail if
4563 you attempted to continue the handshake. This works as designed for the
4564 explicit handshake functions (SSL_do_handshake(), SSL_accept() and
4565 SSL_connect()), however due to a bug it does not work correctly if
4566 SSL_read() or SSL_write() is called directly. In that scenario, if the
4567 handshake fails then a fatal error will be returned in the initial function
4568 call. If SSL_read()/SSL_write() is subsequently called by the application
4569 for the same SSL object then it will succeed and the data is passed without
4570 being decrypted/encrypted directly from the SSL/TLS record layer.
4572 In order to exploit this issue an application bug would have to be present
4573 that resulted in a call to SSL_read()/SSL_write() being issued after having
4574 already received a fatal error.
4576 This issue was reported to OpenSSL by David Benjamin (Google).
4581 * rsaz_1024_mul_avx2 overflow bug on x86_64
4583 There is an overflow bug in the AVX2 Montgomery multiplication procedure
4584 used in exponentiation with 1024-bit moduli. No EC algorithms are affected.
4585 Analysis suggests that attacks against RSA and DSA as a result of this
4586 defect would be very difficult to perform and are not believed likely.
4587 Attacks against DH1024 are considered just feasible, because most of the
4588 work necessary to deduce information about a private key may be performed
4589 offline. The amount of resources required for such an attack would be
4590 significant. However, for an attack on TLS to be meaningful, the server
4591 would have to share the DH1024 private key among multiple clients, which is
4592 no longer an option since CVE-2016-0701.
4594 This only affects processors that support the AVX2 but not ADX extensions
4595 like Intel Haswell (4th generation).
4597 This issue was reported to OpenSSL by David Benjamin (Google). The issue
4598 was originally found via the OSS-Fuzz project.
4603 ### Changes between 1.0.2l and 1.0.2m [2 Nov 2017]
4605 * bn_sqrx8x_internal carry bug on x86_64
4607 There is a carry propagating bug in the x86_64 Montgomery squaring
4608 procedure. No EC algorithms are affected. Analysis suggests that attacks
4609 against RSA and DSA as a result of this defect would be very difficult to
4610 perform and are not believed likely. Attacks against DH are considered just
4611 feasible (although very difficult) because most of the work necessary to
4612 deduce information about a private key may be performed offline. The amount
4613 of resources required for such an attack would be very significant and
4614 likely only accessible to a limited number of attackers. An attacker would
4615 additionally need online access to an unpatched system using the target
4616 private key in a scenario with persistent DH parameters and a private
4617 key that is shared between multiple clients.
4619 This only affects processors that support the BMI1, BMI2 and ADX extensions
4620 like Intel Broadwell (5th generation) and later or AMD Ryzen.
4622 This issue was reported to OpenSSL by the OSS-Fuzz project.
4627 * Malformed X.509 IPAddressFamily could cause OOB read
4629 If an X.509 certificate has a malformed IPAddressFamily extension,
4630 OpenSSL could do a one-byte buffer overread. The most likely result
4631 would be an erroneous display of the certificate in text format.
4633 This issue was reported to OpenSSL by the OSS-Fuzz project.
4637 ### Changes between 1.0.2k and 1.0.2l [25 May 2017]
4639 * Have 'config' recognise 64-bit mingw and choose 'mingw64' as the target
4640 platform rather than 'mingw'.
4644 ### Changes between 1.0.2j and 1.0.2k [26 Jan 2017]
4646 * Truncated packet could crash via OOB read
4648 If one side of an SSL/TLS path is running on a 32-bit host and a specific
4649 cipher is being used, then a truncated packet can cause that host to
4650 perform an out-of-bounds read, usually resulting in a crash.
4652 This issue was reported to OpenSSL by Robert Święcki of Google.
4657 * BN_mod_exp may produce incorrect results on x86_64
4659 There is a carry propagating bug in the x86_64 Montgomery squaring
4660 procedure. No EC algorithms are affected. Analysis suggests that attacks
4661 against RSA and DSA as a result of this defect would be very difficult to
4662 perform and are not believed likely. Attacks against DH are considered just
4663 feasible (although very difficult) because most of the work necessary to
4664 deduce information about a private key may be performed offline. The amount
4665 of resources required for such an attack would be very significant and
4666 likely only accessible to a limited number of attackers. An attacker would
4667 additionally need online access to an unpatched system using the target
4668 private key in a scenario with persistent DH parameters and a private
4669 key that is shared between multiple clients. For example this can occur by
4670 default in OpenSSL DHE based SSL/TLS ciphersuites. Note: This issue is very
4671 similar to CVE-2015-3193 but must be treated as a separate problem.
4673 This issue was reported to OpenSSL by the OSS-Fuzz project.
4678 * Montgomery multiplication may produce incorrect results
4680 There is a carry propagating bug in the Broadwell-specific Montgomery
4681 multiplication procedure that handles input lengths divisible by, but
4682 longer than 256 bits. Analysis suggests that attacks against RSA, DSA
4683 and DH private keys are impossible. This is because the subroutine in
4684 question is not used in operations with the private key itself and an input
4685 of the attacker's direct choice. Otherwise the bug can manifest itself as
4686 transient authentication and key negotiation failures or reproducible
4687 erroneous outcome of public-key operations with specially crafted input.
4688 Among EC algorithms only Brainpool P-512 curves are affected and one
4689 presumably can attack ECDH key negotiation. Impact was not analyzed in
4690 detail, because pre-requisites for attack are considered unlikely. Namely
4691 multiple clients have to choose the curve in question and the server has to
4692 share the private key among them, neither of which is default behaviour.
4693 Even then only clients that chose the curve will be affected.
4695 This issue was publicly reported as transient failures and was not
4696 initially recognized as a security issue. Thanks to Richard Morgan for
4697 providing reproducible case.
4702 * OpenSSL now fails if it receives an unrecognised record type in TLS1.0
4703 or TLS1.1. Previously this only happened in SSLv3 and TLS1.2. This is to
4704 prevent issues where no progress is being made and the peer continually
4705 sends unrecognised record types, using up resources processing them.
4709 ### Changes between 1.0.2i and 1.0.2j [26 Sep 2016]
4711 * Missing CRL sanity check
4713 A bug fix which included a CRL sanity check was added to OpenSSL 1.1.0
4714 but was omitted from OpenSSL 1.0.2i. As a result any attempt to use
4715 CRLs in OpenSSL 1.0.2i will crash with a null pointer exception.
4717 This issue only affects the OpenSSL 1.0.2i
4722 ### Changes between 1.0.2h and 1.0.2i [22 Sep 2016]
4724 * OCSP Status Request extension unbounded memory growth
4726 A malicious client can send an excessively large OCSP Status Request
4727 extension. If that client continually requests renegotiation, sending a
4728 large OCSP Status Request extension each time, then there will be unbounded
4729 memory growth on the server. This will eventually lead to a Denial Of
4730 Service attack through memory exhaustion. Servers with a default
4731 configuration are vulnerable even if they do not support OCSP. Builds using
4732 the "no-ocsp" build time option are not affected.
4734 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
4739 * In order to mitigate the SWEET32 attack, the DES ciphers were moved from
4742 This issue was reported to OpenSSL Karthikeyan Bhargavan and Gaetan
4748 * OOB write in MDC2_Update()
4750 An overflow can occur in MDC2_Update() either if called directly or
4751 through the EVP_DigestUpdate() function using MDC2. If an attacker
4752 is able to supply very large amounts of input data after a previous
4753 call to EVP_EncryptUpdate() with a partial block then a length check
4754 can overflow resulting in a heap corruption.
4756 The amount of data needed is comparable to SIZE_MAX which is impractical
4759 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
4764 * Malformed SHA512 ticket DoS
4766 If a server uses SHA512 for TLS session ticket HMAC it is vulnerable to a
4767 DoS attack where a malformed ticket will result in an OOB read which will
4770 The use of SHA512 in TLS session tickets is comparatively rare as it requires
4771 a custom server callback and ticket lookup mechanism.
4773 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
4778 * OOB write in BN_bn2dec()
4780 The function BN_bn2dec() does not check the return value of BN_div_word().
4781 This can cause an OOB write if an application uses this function with an
4782 overly large BIGNUM. This could be a problem if an overly large certificate
4783 or CRL is printed out from an untrusted source. TLS is not affected because
4784 record limits will reject an oversized certificate before it is parsed.
4786 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
4791 * OOB read in TS_OBJ_print_bio()
4793 The function TS_OBJ_print_bio() misuses OBJ_obj2txt(): the return value is
4794 the total length the OID text representation would use and not the amount
4795 of data written. This will result in OOB reads when large OIDs are
4798 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
4803 * Pointer arithmetic undefined behaviour
4805 Avoid some undefined pointer arithmetic
4807 A common idiom in the codebase is to check limits in the following manner:
4810 Where "p" points to some malloc'd data of SIZE bytes and
4813 "len" here could be from some externally supplied data (e.g. from a TLS
4816 The rules of C pointer arithmetic are such that "p + len" is only well
4817 defined where len <= SIZE. Therefore the above idiom is actually
4818 undefined behaviour.
4820 For example this could cause problems if some malloc implementation
4821 provides an address for "p" such that "p + len" actually overflows for
4822 values of len that are too big and therefore p + len < limit.
4824 This issue was reported to OpenSSL by Guido Vranken
4829 * Constant time flag not preserved in DSA signing
4831 Operations in the DSA signing algorithm should run in constant time in
4832 order to avoid side channel attacks. A flaw in the OpenSSL DSA
4833 implementation means that a non-constant time codepath is followed for
4834 certain operations. This has been demonstrated through a cache-timing
4835 attack to be sufficient for an attacker to recover the private DSA key.
4837 This issue was reported by César Pereida (Aalto University), Billy Brumley
4838 (Tampere University of Technology), and Yuval Yarom (The University of
4839 Adelaide and NICTA).
4844 * DTLS buffered message DoS
4846 In a DTLS connection where handshake messages are delivered out-of-order
4847 those messages that OpenSSL is not yet ready to process will be buffered
4848 for later use. Under certain circumstances, a flaw in the logic means that
4849 those messages do not get removed from the buffer even though the handshake
4850 has been completed. An attacker could force up to approx. 15 messages to
4851 remain in the buffer when they are no longer required. These messages will
4852 be cleared when the DTLS connection is closed. The default maximum size for
4853 a message is 100k. Therefore the attacker could force an additional 1500k
4854 to be consumed per connection. By opening many simulataneous connections an
4855 attacker could cause a DoS attack through memory exhaustion.
4857 This issue was reported to OpenSSL by Quan Luo.
4862 * DTLS replay protection DoS
4864 A flaw in the DTLS replay attack protection mechanism means that records
4865 that arrive for future epochs update the replay protection "window" before
4866 the MAC for the record has been validated. This could be exploited by an
4867 attacker by sending a record for the next epoch (which does not have to
4868 decrypt or have a valid MAC), with a very large sequence number. This means
4869 that all subsequent legitimate packets are dropped causing a denial of
4870 service for a specific DTLS connection.
4872 This issue was reported to OpenSSL by the OCAP audit team.
4877 * Certificate message OOB reads
4879 In OpenSSL 1.0.2 and earlier some missing message length checks can result
4880 in OOB reads of up to 2 bytes beyond an allocated buffer. There is a
4881 theoretical DoS risk but this has not been observed in practice on common
4884 The messages affected are client certificate, client certificate request
4885 and server certificate. As a result the attack can only be performed
4886 against a client or a server which enables client authentication.
4888 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
4893 ### Changes between 1.0.2g and 1.0.2h [3 May 2016]
4895 * Prevent padding oracle in AES-NI CBC MAC check
4897 A MITM attacker can use a padding oracle attack to decrypt traffic
4898 when the connection uses an AES CBC cipher and the server support
4901 This issue was introduced as part of the fix for Lucky 13 padding
4902 attack ([CVE-2013-0169]). The padding check was rewritten to be in
4903 constant time by making sure that always the same bytes are read and
4904 compared against either the MAC or padding bytes. But it no longer
4905 checked that there was enough data to have both the MAC and padding
4908 This issue was reported by Juraj Somorovsky using TLS-Attacker.
4912 * Fix EVP_EncodeUpdate overflow
4914 An overflow can occur in the EVP_EncodeUpdate() function which is used for
4915 Base64 encoding of binary data. If an attacker is able to supply very large
4916 amounts of input data then a length check can overflow resulting in a heap
4919 Internally to OpenSSL the EVP_EncodeUpdate() function is primarily used by
4920 the `PEM_write_bio*` family of functions. These are mainly used within the
4921 OpenSSL command line applications, so any application which processes data
4922 from an untrusted source and outputs it as a PEM file should be considered
4923 vulnerable to this issue. User applications that call these APIs directly
4924 with large amounts of untrusted data may also be vulnerable.
4926 This issue was reported by Guido Vranken.
4931 * Fix EVP_EncryptUpdate overflow
4933 An overflow can occur in the EVP_EncryptUpdate() function. If an attacker
4934 is able to supply very large amounts of input data after a previous call to
4935 EVP_EncryptUpdate() with a partial block then a length check can overflow
4936 resulting in a heap corruption. Following an analysis of all OpenSSL
4937 internal usage of the EVP_EncryptUpdate() function all usage is one of two
4938 forms. The first form is where the EVP_EncryptUpdate() call is known to be
4939 the first called function after an EVP_EncryptInit(), and therefore that
4940 specific call must be safe. The second form is where the length passed to
4941 EVP_EncryptUpdate() can be seen from the code to be some small value and
4942 therefore there is no possibility of an overflow. Since all instances are
4943 one of these two forms, it is believed that there can be no overflows in
4944 internal code due to this problem. It should be noted that
4945 EVP_DecryptUpdate() can call EVP_EncryptUpdate() in certain code paths.
4946 Also EVP_CipherUpdate() is a synonym for EVP_EncryptUpdate(). All instances
4947 of these calls have also been analysed too and it is believed there are no
4948 instances in internal usage where an overflow could occur.
4950 This issue was reported by Guido Vranken.
4955 * Prevent ASN.1 BIO excessive memory allocation
4957 When ASN.1 data is read from a BIO using functions such as d2i_CMS_bio()
4958 a short invalid encoding can cause allocation of large amounts of memory
4959 potentially consuming excessive resources or exhausting memory.
4961 Any application parsing untrusted data through d2i BIO functions is
4962 affected. The memory based functions such as d2i_X509() are *not* affected.
4963 Since the memory based functions are used by the TLS library, TLS
4964 applications are not affected.
4966 This issue was reported by Brian Carpenter.
4973 ASN1 Strings that are over 1024 bytes can cause an overread in applications
4974 using the X509_NAME_oneline() function on EBCDIC systems. This could result
4975 in arbitrary stack data being returned in the buffer.
4977 This issue was reported by Guido Vranken.
4982 * Modify behavior of ALPN to invoke callback after SNI/servername
4983 callback, such that updates to the SSL_CTX affect ALPN.
4987 * Remove LOW from the DEFAULT cipher list. This removes singles DES from the
4992 * Only remove the SSLv2 methods with the no-ssl2-method option. When the
4993 methods are enabled and ssl2 is disabled the methods return NULL.
4997 ### Changes between 1.0.2f and 1.0.2g [1 Mar 2016]
4999 * Disable weak ciphers in SSLv3 and up in default builds of OpenSSL.
5000 Builds that are not configured with "enable-weak-ssl-ciphers" will not
5001 provide any "EXPORT" or "LOW" strength ciphers.
5005 * Disable SSLv2 default build, default negotiation and weak ciphers. SSLv2
5006 is by default disabled at build-time. Builds that are not configured with
5007 "enable-ssl2" will not support SSLv2. Even if "enable-ssl2" is used,
5008 users who want to negotiate SSLv2 via the version-flexible SSLv23_method()
5009 will need to explicitly call either of:
5011 SSL_CTX_clear_options(ctx, SSL_OP_NO_SSLv2);
5013 SSL_clear_options(ssl, SSL_OP_NO_SSLv2);
5015 as appropriate. Even if either of those is used, or the application
5016 explicitly uses the version-specific SSLv2_method() or its client and
5017 server variants, SSLv2 ciphers vulnerable to exhaustive search key
5018 recovery have been removed. Specifically, the SSLv2 40-bit EXPORT
5019 ciphers, and SSLv2 56-bit DES are no longer available.
5024 * Fix a double-free in DSA code
5026 A double free bug was discovered when OpenSSL parses malformed DSA private
5027 keys and could lead to a DoS attack or memory corruption for applications
5028 that receive DSA private keys from untrusted sources. This scenario is
5031 This issue was reported to OpenSSL by Adam Langley(Google/BoringSSL) using
5037 * Disable SRP fake user seed to address a server memory leak.
5039 Add a new method SRP_VBASE_get1_by_user that handles the seed properly.
5041 SRP_VBASE_get_by_user had inconsistent memory management behaviour.
5042 In order to fix an unavoidable memory leak, SRP_VBASE_get_by_user
5043 was changed to ignore the "fake user" SRP seed, even if the seed
5046 Users should use SRP_VBASE_get1_by_user instead. Note that in
5047 SRP_VBASE_get1_by_user, caller must free the returned value. Note
5048 also that even though configuring the SRP seed attempts to hide
5049 invalid usernames by continuing the handshake with fake
5050 credentials, this behaviour is not constant time and no strong
5051 guarantees are made that the handshake is indistinguishable from
5052 that of a valid user.
5057 * Fix BN_hex2bn/BN_dec2bn NULL pointer deref/heap corruption
5059 In the BN_hex2bn function the number of hex digits is calculated using an
5060 int value `i`. Later `bn_expand` is called with a value of `i * 4`. For
5061 large values of `i` this can result in `bn_expand` not allocating any
5062 memory because `i * 4` is negative. This can leave the internal BIGNUM data
5063 field as NULL leading to a subsequent NULL ptr deref. For very large values
5064 of `i`, the calculation `i * 4` could be a positive value smaller than `i`.
5065 In this case memory is allocated to the internal BIGNUM data field, but it
5066 is insufficiently sized leading to heap corruption. A similar issue exists
5067 in BN_dec2bn. This could have security consequences if BN_hex2bn/BN_dec2bn
5068 is ever called by user applications with very large untrusted hex/dec data.
5069 This is anticipated to be a rare occurrence.
5071 All OpenSSL internal usage of these functions use data that is not expected
5072 to be untrusted, e.g. config file data or application command line
5073 arguments. If user developed applications generate config file data based
5074 on untrusted data then it is possible that this could also lead to security
5075 consequences. This is also anticipated to be rare.
5077 This issue was reported to OpenSSL by Guido Vranken.
5082 * Fix memory issues in `BIO_*printf` functions
5084 The internal `fmtstr` function used in processing a "%s" format string in
5085 the `BIO_*printf` functions could overflow while calculating the length of a
5086 string and cause an OOB read when printing very long strings.
5088 Additionally the internal `doapr_outch` function can attempt to write to an
5089 OOB memory location (at an offset from the NULL pointer) in the event of a
5090 memory allocation failure. In 1.0.2 and below this could be caused where
5091 the size of a buffer to be allocated is greater than INT_MAX. E.g. this
5092 could be in processing a very long "%s" format string. Memory leaks can
5095 The first issue may mask the second issue dependent on compiler behaviour.
5096 These problems could enable attacks where large amounts of untrusted data
5097 is passed to the `BIO_*printf` functions. If applications use these functions
5098 in this way then they could be vulnerable. OpenSSL itself uses these
5099 functions when printing out human-readable dumps of ASN.1 data. Therefore
5100 applications that print this data could be vulnerable if the data is from
5101 untrusted sources. OpenSSL command line applications could also be
5102 vulnerable where they print out ASN.1 data, or if untrusted data is passed
5103 as command line arguments.
5105 Libssl is not considered directly vulnerable. Additionally certificates etc
5106 received via remote connections via libssl are also unlikely to be able to
5107 trigger these issues because of message size limits enforced within libssl.
5109 This issue was reported to OpenSSL Guido Vranken.
5114 * Side channel attack on modular exponentiation
5116 A side-channel attack was found which makes use of cache-bank conflicts on
5117 the Intel Sandy-Bridge microarchitecture which could lead to the recovery
5118 of RSA keys. The ability to exploit this issue is limited as it relies on
5119 an attacker who has control of code in a thread running on the same
5120 hyper-threaded core as the victim thread which is performing decryptions.
5122 This issue was reported to OpenSSL by Yuval Yarom, The University of
5123 Adelaide and NICTA, Daniel Genkin, Technion and Tel Aviv University, and
5124 Nadia Heninger, University of Pennsylvania with more information at
5125 <http://cachebleed.info>.
5130 * Change the `req` command to generate a 2048-bit RSA/DSA key by default,
5131 if no keysize is specified with default_bits. This fixes an
5132 omission in an earlier change that changed all RSA/DSA key generation
5133 commands to use 2048 bits by default.
5137 ### Changes between 1.0.2e and 1.0.2f [28 Jan 2016]
5139 * DH small subgroups
5141 Historically OpenSSL only ever generated DH parameters based on "safe"
5142 primes. More recently (in version 1.0.2) support was provided for
5143 generating X9.42 style parameter files such as those required for RFC 5114
5144 support. The primes used in such files may not be "safe". Where an
5145 application is using DH configured with parameters based on primes that are
5146 not "safe" then an attacker could use this fact to find a peer's private
5147 DH exponent. This attack requires that the attacker complete multiple
5148 handshakes in which the peer uses the same private DH exponent. For example
5149 this could be used to discover a TLS server's private DH exponent if it's
5150 reusing the private DH exponent or it's using a static DH ciphersuite.
5152 OpenSSL provides the option SSL_OP_SINGLE_DH_USE for ephemeral DH (DHE) in
5153 TLS. It is not on by default. If the option is not set then the server
5154 reuses the same private DH exponent for the life of the server process and
5155 would be vulnerable to this attack. It is believed that many popular
5156 applications do set this option and would therefore not be at risk.
5158 The fix for this issue adds an additional check where a "q" parameter is
5159 available (as is the case in X9.42 based parameters). This detects the
5160 only known attack, and is the only possible defense for static DH
5161 ciphersuites. This could have some performance impact.
5163 Additionally the SSL_OP_SINGLE_DH_USE option has been switched on by
5164 default and cannot be disabled. This could have some performance impact.
5166 This issue was reported to OpenSSL by Antonio Sanso (Adobe).
5171 * SSLv2 doesn't block disabled ciphers
5173 A malicious client can negotiate SSLv2 ciphers that have been disabled on
5174 the server and complete SSLv2 handshakes even if all SSLv2 ciphers have
5175 been disabled, provided that the SSLv2 protocol was not also disabled via
5178 This issue was reported to OpenSSL on 26th December 2015 by Nimrod Aviram
5179 and Sebastian Schinzel.
5184 ### Changes between 1.0.2d and 1.0.2e [3 Dec 2015]
5186 * BN_mod_exp may produce incorrect results on x86_64
5188 There is a carry propagating bug in the x86_64 Montgomery squaring
5189 procedure. No EC algorithms are affected. Analysis suggests that attacks
5190 against RSA and DSA as a result of this defect would be very difficult to
5191 perform and are not believed likely. Attacks against DH are considered just
5192 feasible (although very difficult) because most of the work necessary to
5193 deduce information about a private key may be performed offline. The amount
5194 of resources required for such an attack would be very significant and
5195 likely only accessible to a limited number of attackers. An attacker would
5196 additionally need online access to an unpatched system using the target
5197 private key in a scenario with persistent DH parameters and a private
5198 key that is shared between multiple clients. For example this can occur by
5199 default in OpenSSL DHE based SSL/TLS ciphersuites.
5201 This issue was reported to OpenSSL by Hanno Böck.
5206 * Certificate verify crash with missing PSS parameter
5208 The signature verification routines will crash with a NULL pointer
5209 dereference if presented with an ASN.1 signature using the RSA PSS
5210 algorithm and absent mask generation function parameter. Since these
5211 routines are used to verify certificate signature algorithms this can be
5212 used to crash any certificate verification operation and exploited in a
5213 DoS attack. Any application which performs certificate verification is
5214 vulnerable including OpenSSL clients and servers which enable client
5217 This issue was reported to OpenSSL by Loïc Jonas Etienne (Qnective AG).
5222 * X509_ATTRIBUTE memory leak
5224 When presented with a malformed X509_ATTRIBUTE structure OpenSSL will leak
5225 memory. This structure is used by the PKCS#7 and CMS routines so any
5226 application which reads PKCS#7 or CMS data from untrusted sources is
5227 affected. SSL/TLS is not affected.
5229 This issue was reported to OpenSSL by Adam Langley (Google/BoringSSL) using
5235 * Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
5236 This changes the decoding behaviour for some invalid messages,
5237 though the change is mostly in the more lenient direction, and
5238 legacy behaviour is preserved as much as possible.
5242 * In DSA_generate_parameters_ex, if the provided seed is too short,
5245 *Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>*
5247 ### Changes between 1.0.2c and 1.0.2d [9 Jul 2015]
5249 * Alternate chains certificate forgery
5251 During certificate verification, OpenSSL will attempt to find an
5252 alternative certificate chain if the first attempt to build such a chain
5253 fails. An error in the implementation of this logic can mean that an
5254 attacker could cause certain checks on untrusted certificates to be
5255 bypassed, such as the CA flag, enabling them to use a valid leaf
5256 certificate to act as a CA and "issue" an invalid certificate.
5258 This issue was reported to OpenSSL by Adam Langley/David Benjamin
5263 ### Changes between 1.0.2b and 1.0.2c [12 Jun 2015]
5265 * Fix HMAC ABI incompatibility. The previous version introduced an ABI
5266 incompatibility in the handling of HMAC. The previous ABI has now been
5271 ### Changes between 1.0.2a and 1.0.2b [11 Jun 2015]
5273 * Malformed ECParameters causes infinite loop
5275 When processing an ECParameters structure OpenSSL enters an infinite loop
5276 if the curve specified is over a specially malformed binary polynomial
5279 This can be used to perform denial of service against any
5280 system which processes public keys, certificate requests or
5281 certificates. This includes TLS clients and TLS servers with
5282 client authentication enabled.
5284 This issue was reported to OpenSSL by Joseph Barr-Pixton.
5289 * Exploitable out-of-bounds read in X509_cmp_time
5291 X509_cmp_time does not properly check the length of the ASN1_TIME
5292 string and can read a few bytes out of bounds. In addition,
5293 X509_cmp_time accepts an arbitrary number of fractional seconds in the
5296 An attacker can use this to craft malformed certificates and CRLs of
5297 various sizes and potentially cause a segmentation fault, resulting in
5298 a DoS on applications that verify certificates or CRLs. TLS clients
5299 that verify CRLs are affected. TLS clients and servers with client
5300 authentication enabled may be affected if they use custom verification
5303 This issue was reported to OpenSSL by Robert Swiecki (Google), and
5304 independently by Hanno Böck.
5309 * PKCS7 crash with missing EnvelopedContent
5311 The PKCS#7 parsing code does not handle missing inner EncryptedContent
5312 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs
5313 with missing content and trigger a NULL pointer dereference on parsing.
5315 Applications that decrypt PKCS#7 data or otherwise parse PKCS#7
5316 structures from untrusted sources are affected. OpenSSL clients and
5317 servers are not affected.
5319 This issue was reported to OpenSSL by Michal Zalewski (Google).
5324 * CMS verify infinite loop with unknown hash function
5326 When verifying a signedData message the CMS code can enter an infinite loop
5327 if presented with an unknown hash function OID. This can be used to perform
5328 denial of service against any system which verifies signedData messages using
5330 This issue was reported to OpenSSL by Johannes Bauer.
5335 * Race condition handling NewSessionTicket
5337 If a NewSessionTicket is received by a multi-threaded client when attempting to
5338 reuse a previous ticket then a race condition can occur potentially leading to
5339 a double free of the ticket data.
5344 * Only support 256-bit or stronger elliptic curves with the
5345 'ecdh_auto' setting (server) or by default (client). Of supported
5346 curves, prefer P-256 (both).
5350 ### Changes between 1.0.2 and 1.0.2a [19 Mar 2015]
5352 * ClientHello sigalgs DoS fix
5354 If a client connects to an OpenSSL 1.0.2 server and renegotiates with an
5355 invalid signature algorithms extension a NULL pointer dereference will
5356 occur. This can be exploited in a DoS attack against the server.
5358 This issue was was reported to OpenSSL by David Ramos of Stanford
5362 *Stephen Henson and Matt Caswell*
5364 * Multiblock corrupted pointer fix
5366 OpenSSL 1.0.2 introduced the "multiblock" performance improvement. This
5367 feature only applies on 64 bit x86 architecture platforms that support AES
5368 NI instructions. A defect in the implementation of "multiblock" can cause
5369 OpenSSL's internal write buffer to become incorrectly set to NULL when
5370 using non-blocking IO. Typically, when the user application is using a
5371 socket BIO for writing, this will only result in a failed connection.
5372 However if some other BIO is used then it is likely that a segmentation
5373 fault will be triggered, thus enabling a potential DoS attack.
5375 This issue was reported to OpenSSL by Daniel Danner and Rainer Mueller.
5380 * Segmentation fault in DTLSv1_listen fix
5382 The DTLSv1_listen function is intended to be stateless and processes the
5383 initial ClientHello from many peers. It is common for user code to loop
5384 over the call to DTLSv1_listen until a valid ClientHello is received with
5385 an associated cookie. A defect in the implementation of DTLSv1_listen means
5386 that state is preserved in the SSL object from one invocation to the next
5387 that can lead to a segmentation fault. Errors processing the initial
5388 ClientHello can trigger this scenario. An example of such an error could be
5389 that a DTLS1.0 only client is attempting to connect to a DTLS1.2 only
5392 This issue was reported to OpenSSL by Per Allansson.
5397 * Segmentation fault in ASN1_TYPE_cmp fix
5399 The function ASN1_TYPE_cmp will crash with an invalid read if an attempt is
5400 made to compare ASN.1 boolean types. Since ASN1_TYPE_cmp is used to check
5401 certificate signature algorithm consistency this can be used to crash any
5402 certificate verification operation and exploited in a DoS attack. Any
5403 application which performs certificate verification is vulnerable including
5404 OpenSSL clients and servers which enable client authentication.
5409 * Segmentation fault for invalid PSS parameters fix
5411 The signature verification routines will crash with a NULL pointer
5412 dereference if presented with an ASN.1 signature using the RSA PSS
5413 algorithm and invalid parameters. Since these routines are used to verify
5414 certificate signature algorithms this can be used to crash any
5415 certificate verification operation and exploited in a DoS attack. Any
5416 application which performs certificate verification is vulnerable including
5417 OpenSSL clients and servers which enable client authentication.
5419 This issue was was reported to OpenSSL by Brian Carpenter.
5424 * ASN.1 structure reuse memory corruption fix
5426 Reusing a structure in ASN.1 parsing may allow an attacker to cause
5427 memory corruption via an invalid write. Such reuse is and has been
5428 strongly discouraged and is believed to be rare.
5430 Applications that parse structures containing CHOICE or ANY DEFINED BY
5431 components may be affected. Certificate parsing (d2i_X509 and related
5432 functions) are however not affected. OpenSSL clients and servers are
5438 * PKCS7 NULL pointer dereferences fix
5440 The PKCS#7 parsing code does not handle missing outer ContentInfo
5441 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs with
5442 missing content and trigger a NULL pointer dereference on parsing.
5444 Applications that verify PKCS#7 signatures, decrypt PKCS#7 data or
5445 otherwise parse PKCS#7 structures from untrusted sources are
5446 affected. OpenSSL clients and servers are not affected.
5448 This issue was reported to OpenSSL by Michal Zalewski (Google).
5453 * DoS via reachable assert in SSLv2 servers fix
5455 A malicious client can trigger an OPENSSL_assert (i.e., an abort) in
5456 servers that both support SSLv2 and enable export cipher suites by sending
5457 a specially crafted SSLv2 CLIENT-MASTER-KEY message.
5459 This issue was discovered by Sean Burford (Google) and Emilia Käsper
5460 (OpenSSL development team).
5465 * Empty CKE with client auth and DHE fix
5467 If client auth is used then a server can seg fault in the event of a DHE
5468 ciphersuite being selected and a zero length ClientKeyExchange message
5469 being sent by the client. This could be exploited in a DoS attack.
5474 * Handshake with unseeded PRNG fix
5476 Under certain conditions an OpenSSL 1.0.2 client can complete a handshake
5477 with an unseeded PRNG. The conditions are:
5478 - The client is on a platform where the PRNG has not been seeded
5479 automatically, and the user has not seeded manually
5480 - A protocol specific client method version has been used (i.e. not
5481 SSL_client_methodv23)
5482 - A ciphersuite is used that does not require additional random data from
5483 the PRNG beyond the initial ClientHello client random (e.g. PSK-RC4-SHA).
5485 If the handshake succeeds then the client random that has been used will
5486 have been generated from a PRNG with insufficient entropy and therefore the
5487 output may be predictable.
5489 For example using the following command with an unseeded openssl will
5490 succeed on an unpatched platform:
5492 openssl s_client -psk 1a2b3c4d -tls1_2 -cipher PSK-RC4-SHA
5497 * Use After Free following d2i_ECPrivatekey error fix
5499 A malformed EC private key file consumed via the d2i_ECPrivateKey function
5500 could cause a use after free condition. This, in turn, could cause a double
5501 free in several private key parsing functions (such as d2i_PrivateKey
5502 or EVP_PKCS82PKEY) and could lead to a DoS attack or memory corruption
5503 for applications that receive EC private keys from untrusted
5504 sources. This scenario is considered rare.
5506 This issue was discovered by the BoringSSL project and fixed in their
5512 * X509_to_X509_REQ NULL pointer deref fix
5514 The function X509_to_X509_REQ will crash with a NULL pointer dereference if
5515 the certificate key is invalid. This function is rarely used in practice.
5517 This issue was discovered by Brian Carpenter.
5522 * Removed the export ciphers from the DEFAULT ciphers
5526 ### Changes between 1.0.1l and 1.0.2 [22 Jan 2015]
5528 * Facilitate "universal" ARM builds targeting range of ARM ISAs, e.g.
5529 ARMv5 through ARMv8, as opposite to "locking" it to single one.
5530 So far those who have to target multiple platforms would compromise
5531 and argue that binary targeting say ARMv5 would still execute on
5532 ARMv8. "Universal" build resolves this compromise by providing
5533 near-optimal performance even on newer platforms.
5537 * Accelerated NIST P-256 elliptic curve implementation for x86_64
5538 (other platforms pending).
5540 *Shay Gueron & Vlad Krasnov (Intel Corp), Andy Polyakov*
5542 * Add support for the SignedCertificateTimestampList certificate and
5543 OCSP response extensions from RFC6962.
5547 * Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
5548 for corner cases. (Certain input points at infinity could lead to
5549 bogus results, with non-infinity inputs mapped to infinity too.)
5553 * Initial support for PowerISA 2.0.7, first implemented in POWER8.
5554 This covers AES, SHA256/512 and GHASH. "Initial" means that most
5555 common cases are optimized and there still is room for further
5556 improvements. Vector Permutation AES for Altivec is also added.
5560 * Add support for little-endian ppc64 Linux target.
5562 *Marcelo Cerri (IBM)*
5564 * Initial support for AMRv8 ISA crypto extensions. This covers AES,
5565 SHA1, SHA256 and GHASH. "Initial" means that most common cases
5566 are optimized and there still is room for further improvements.
5567 Both 32- and 64-bit modes are supported.
5569 *Andy Polyakov, Ard Biesheuvel (Linaro)*
5571 * Improved ARMv7 NEON support.
5575 * Support for SPARC Architecture 2011 crypto extensions, first
5576 implemented in SPARC T4. This covers AES, DES, Camellia, SHA1,
5577 SHA256/512, MD5, GHASH and modular exponentiation.
5579 *Andy Polyakov, David Miller*
5581 * Accelerated modular exponentiation for Intel processors, a.k.a.
5584 *Shay Gueron & Vlad Krasnov (Intel Corp)*
5586 * Support for new and upcoming Intel processors, including AVX2,
5587 BMI and SHA ISA extensions. This includes additional "stitched"
5588 implementations, AESNI-SHA256 and GCM, and multi-buffer support
5591 This work was sponsored by Intel Corp.
5595 * Support for DTLS 1.2. This adds two sets of DTLS methods: DTLS_*_method()
5596 supports both DTLS 1.2 and 1.0 and should use whatever version the peer
5597 supports and DTLSv1_2_*_method() which supports DTLS 1.2 only.
5601 * Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
5602 this fixes a limitation in previous versions of OpenSSL.
5606 * Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
5607 MGF1 digest and OAEP label.
5611 * Add EVP support for key wrapping algorithms, to avoid problems with
5612 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
5613 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
5614 algorithms and include tests cases.
5618 * Add functions to allocate and set the fields of an ECDSA_METHOD
5621 *Douglas E. Engert, Steve Henson*
5623 * New functions OPENSSL_gmtime_diff and ASN1_TIME_diff to find the
5624 difference in days and seconds between two tm or ASN1_TIME structures.
5628 * Add -rev test option to s_server to just reverse order of characters
5629 received by client and send back to server. Also prints an abbreviated
5630 summary of the connection parameters.
5634 * New option -brief for s_client and s_server to print out a brief summary
5635 of connection parameters.
5639 * Add callbacks for arbitrary TLS extensions.
5641 *Trevor Perrin <trevp@trevp.net> and Ben Laurie*
5643 * New option -crl_download in several openssl utilities to download CRLs
5644 from CRLDP extension in certificates.
5648 * New options -CRL and -CRLform for s_client and s_server for CRLs.
5652 * New function X509_CRL_diff to generate a delta CRL from the difference
5653 of two full CRLs. Add support to "crl" utility.
5657 * New functions to set lookup_crls function and to retrieve
5658 X509_STORE from X509_STORE_CTX.
5662 * Print out deprecated issuer and subject unique ID fields in
5667 * Extend OCSP I/O functions so they can be used for simple general purpose
5668 HTTP as well as OCSP. New wrapper function which can be used to download
5669 CRLs using the OCSP API.
5673 * Delegate command line handling in s_client/s_server to SSL_CONF APIs.
5677 * `SSL_CONF*` functions. These provide a common framework for application
5678 configuration using configuration files or command lines.
5682 * SSL/TLS tracing code. This parses out SSL/TLS records using the
5683 message callback and prints the results. Needs compile time option
5684 "enable-ssl-trace". New options to s_client and s_server to enable
5689 * New ctrl and macro to retrieve supported points extensions.
5690 Print out extension in s_server and s_client.
5694 * New functions to retrieve certificate signature and signature
5699 * Add functions to retrieve and manipulate the raw cipherlist sent by a
5704 * New Suite B modes for TLS code. These use and enforce the requirements
5705 of RFC6460: restrict ciphersuites, only permit Suite B algorithms and
5706 only use Suite B curves. The Suite B modes can be set by using the
5707 strings "SUITEB128", "SUITEB192" or "SUITEB128ONLY" for the cipherstring.
5711 * New chain verification flags for Suite B levels of security. Check
5712 algorithms are acceptable when flags are set in X509_verify_cert.
5716 * Make tls1_check_chain return a set of flags indicating checks passed
5717 by a certificate chain. Add additional tests to handle client
5718 certificates: checks for matching certificate type and issuer name
5723 * If an attempt is made to use a signature algorithm not in the peer
5724 preference list abort the handshake. If client has no suitable
5725 signature algorithms in response to a certificate request do not
5726 use the certificate.
5730 * If server EC tmp key is not in client preference list abort handshake.
5734 * Add support for certificate stores in CERT structure. This makes it
5735 possible to have different stores per SSL structure or one store in
5736 the parent SSL_CTX. Include distinct stores for certificate chain
5737 verification and chain building. New ctrl SSL_CTRL_BUILD_CERT_CHAIN
5738 to build and store a certificate chain in CERT structure: returning
5739 an error if the chain cannot be built: this will allow applications
5740 to test if a chain is correctly configured.
5742 Note: if the CERT based stores are not set then the parent SSL_CTX
5743 store is used to retain compatibility with existing behaviour.
5747 * New function ssl_set_client_disabled to set a ciphersuite disabled
5748 mask based on the current session, check mask when sending client
5749 hello and checking the requested ciphersuite.
5753 * New ctrls to retrieve and set certificate types in a certificate
5754 request message. Print out received values in s_client. If certificate
5755 types is not set with custom values set sensible values based on
5756 supported signature algorithms.
5760 * Support for distinct client and server supported signature algorithms.
5764 * Add certificate callback. If set this is called whenever a certificate
5765 is required by client or server. An application can decide which
5766 certificate chain to present based on arbitrary criteria: for example
5767 supported signature algorithms. Add very simple example to s_server.
5768 This fixes many of the problems and restrictions of the existing client
5769 certificate callback: for example you can now clear an existing
5770 certificate and specify the whole chain.
5774 * Add new "valid_flags" field to CERT_PKEY structure which determines what
5775 the certificate can be used for (if anything). Set valid_flags field
5776 in new tls1_check_chain function. Simplify ssl_set_cert_masks which used
5777 to have similar checks in it.
5779 Add new "cert_flags" field to CERT structure and include a "strict mode".
5780 This enforces some TLS certificate requirements (such as only permitting
5781 certificate signature algorithms contained in the supported algorithms
5782 extension) which some implementations ignore: this option should be used
5783 with caution as it could cause interoperability issues.
5787 * Update and tidy signature algorithm extension processing. Work out
5788 shared signature algorithms based on preferences and peer algorithms
5789 and print them out in s_client and s_server. Abort handshake if no
5790 shared signature algorithms.
5794 * Add new functions to allow customised supported signature algorithms
5795 for SSL and SSL_CTX structures. Add options to s_client and s_server
5800 * New function SSL_certs_clear() to delete all references to certificates
5801 from an SSL structure. Before this once a certificate had been added
5802 it couldn't be removed.
5806 * Integrate hostname, email address and IP address checking with certificate
5807 verification. New verify options supporting checking in openssl utility.
5811 * Fixes and wildcard matching support to hostname and email checking
5812 functions. Add manual page.
5814 *Florian Weimer (Red Hat Product Security Team)*
5816 * New functions to check a hostname email or IP address against a
5817 certificate. Add options x509 utility to print results of checks against
5822 * Fix OCSP checking.
5824 *Rob Stradling <rob.stradling@comodo.com> and Ben Laurie*
5826 * Initial experimental support for explicitly trusted non-root CAs.
5827 OpenSSL still tries to build a complete chain to a root but if an
5828 intermediate CA has a trust setting included that is used. The first
5829 setting is used: whether to trust (e.g., -addtrust option to the x509
5834 * Add -trusted_first option which attempts to find certificates in the
5835 trusted store even if an untrusted chain is also supplied.
5839 * MIPS assembly pack updates: support for MIPS32r2 and SmartMIPS ASE,
5840 platform support for Linux and Android.
5844 * Support for linux-x32, ILP32 environment in x86_64 framework.
5848 * Experimental multi-implementation support for FIPS capable OpenSSL.
5849 When in FIPS mode the approved implementations are used as normal,
5850 when not in FIPS mode the internal unapproved versions are used instead.
5851 This means that the FIPS capable OpenSSL isn't forced to use the
5852 (often lower performance) FIPS implementations outside FIPS mode.
5856 * Transparently support X9.42 DH parameters when calling
5857 PEM_read_bio_DHparameters. This means existing applications can handle
5858 the new parameter format automatically.
5862 * Initial experimental support for X9.42 DH parameter format: mainly
5863 to support use of 'q' parameter for RFC5114 parameters.
5867 * Add DH parameters from RFC5114 including test data to dhtest.
5871 * Support for automatic EC temporary key parameter selection. If enabled
5872 the most preferred EC parameters are automatically used instead of
5873 hardcoded fixed parameters. Now a server just has to call:
5874 SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically
5875 support ECDH and use the most appropriate parameters.
5879 * Enhance and tidy EC curve and point format TLS extension code. Use
5880 static structures instead of allocation if default values are used.
5881 New ctrls to set curves we wish to support and to retrieve shared curves.
5882 Print out shared curves in s_server. New options to s_server and s_client
5883 to set list of supported curves.
5887 * New ctrls to retrieve supported signature algorithms and
5888 supported curve values as an array of NIDs. Extend openssl utility
5889 to print out received values.
5893 * Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert
5894 between NIDs and the more common NIST names such as "P-256". Enhance
5895 ecparam utility and ECC method to recognise the NIST names for curves.
5899 * Enhance SSL/TLS certificate chain handling to support different
5900 chains for each certificate instead of one chain in the parent SSL_CTX.
5904 * Support for fixed DH ciphersuite client authentication: where both
5905 server and client use DH certificates with common parameters.
5909 * Support for fixed DH ciphersuites: those requiring DH server
5914 * New function i2d_re_X509_tbs for re-encoding the TBS portion of
5916 Note: Related 1.0.2-beta specific macros X509_get_cert_info,
5917 X509_CINF_set_modified, X509_CINF_get_issuer, X509_CINF_get_extensions and
5918 X509_CINF_get_signature were reverted post internal team review.
5923 ### Changes between 1.0.1t and 1.0.1u [22 Sep 2016]
5925 * OCSP Status Request extension unbounded memory growth
5927 A malicious client can send an excessively large OCSP Status Request
5928 extension. If that client continually requests renegotiation, sending a
5929 large OCSP Status Request extension each time, then there will be unbounded
5930 memory growth on the server. This will eventually lead to a Denial Of
5931 Service attack through memory exhaustion. Servers with a default
5932 configuration are vulnerable even if they do not support OCSP. Builds using
5933 the "no-ocsp" build time option are not affected.
5935 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
5940 * In order to mitigate the SWEET32 attack, the DES ciphers were moved from
5943 This issue was reported to OpenSSL Karthikeyan Bhargavan and Gaetan
5949 * OOB write in MDC2_Update()
5951 An overflow can occur in MDC2_Update() either if called directly or
5952 through the EVP_DigestUpdate() function using MDC2. If an attacker
5953 is able to supply very large amounts of input data after a previous
5954 call to EVP_EncryptUpdate() with a partial block then a length check
5955 can overflow resulting in a heap corruption.
5957 The amount of data needed is comparable to SIZE_MAX which is impractical
5960 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
5965 * Malformed SHA512 ticket DoS
5967 If a server uses SHA512 for TLS session ticket HMAC it is vulnerable to a
5968 DoS attack where a malformed ticket will result in an OOB read which will
5971 The use of SHA512 in TLS session tickets is comparatively rare as it requires
5972 a custom server callback and ticket lookup mechanism.
5974 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
5979 * OOB write in BN_bn2dec()
5981 The function BN_bn2dec() does not check the return value of BN_div_word().
5982 This can cause an OOB write if an application uses this function with an
5983 overly large BIGNUM. This could be a problem if an overly large certificate
5984 or CRL is printed out from an untrusted source. TLS is not affected because
5985 record limits will reject an oversized certificate before it is parsed.
5987 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
5992 * OOB read in TS_OBJ_print_bio()
5994 The function TS_OBJ_print_bio() misuses OBJ_obj2txt(): the return value is
5995 the total length the OID text representation would use and not the amount
5996 of data written. This will result in OOB reads when large OIDs are
5999 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
6004 * Pointer arithmetic undefined behaviour
6006 Avoid some undefined pointer arithmetic
6008 A common idiom in the codebase is to check limits in the following manner:
6011 Where "p" points to some malloc'd data of SIZE bytes and
6014 "len" here could be from some externally supplied data (e.g. from a TLS
6017 The rules of C pointer arithmetic are such that "p + len" is only well
6018 defined where len <= SIZE. Therefore the above idiom is actually
6019 undefined behaviour.
6021 For example this could cause problems if some malloc implementation
6022 provides an address for "p" such that "p + len" actually overflows for
6023 values of len that are too big and therefore p + len < limit.
6025 This issue was reported to OpenSSL by Guido Vranken
6030 * Constant time flag not preserved in DSA signing
6032 Operations in the DSA signing algorithm should run in constant time in
6033 order to avoid side channel attacks. A flaw in the OpenSSL DSA
6034 implementation means that a non-constant time codepath is followed for
6035 certain operations. This has been demonstrated through a cache-timing
6036 attack to be sufficient for an attacker to recover the private DSA key.
6038 This issue was reported by César Pereida (Aalto University), Billy Brumley
6039 (Tampere University of Technology), and Yuval Yarom (The University of
6040 Adelaide and NICTA).
6045 * DTLS buffered message DoS
6047 In a DTLS connection where handshake messages are delivered out-of-order
6048 those messages that OpenSSL is not yet ready to process will be buffered
6049 for later use. Under certain circumstances, a flaw in the logic means that
6050 those messages do not get removed from the buffer even though the handshake
6051 has been completed. An attacker could force up to approx. 15 messages to
6052 remain in the buffer when they are no longer required. These messages will
6053 be cleared when the DTLS connection is closed. The default maximum size for
6054 a message is 100k. Therefore the attacker could force an additional 1500k
6055 to be consumed per connection. By opening many simulataneous connections an
6056 attacker could cause a DoS attack through memory exhaustion.
6058 This issue was reported to OpenSSL by Quan Luo.
6063 * DTLS replay protection DoS
6065 A flaw in the DTLS replay attack protection mechanism means that records
6066 that arrive for future epochs update the replay protection "window" before
6067 the MAC for the record has been validated. This could be exploited by an
6068 attacker by sending a record for the next epoch (which does not have to
6069 decrypt or have a valid MAC), with a very large sequence number. This means
6070 that all subsequent legitimate packets are dropped causing a denial of
6071 service for a specific DTLS connection.
6073 This issue was reported to OpenSSL by the OCAP audit team.
6078 * Certificate message OOB reads
6080 In OpenSSL 1.0.2 and earlier some missing message length checks can result
6081 in OOB reads of up to 2 bytes beyond an allocated buffer. There is a
6082 theoretical DoS risk but this has not been observed in practice on common
6085 The messages affected are client certificate, client certificate request
6086 and server certificate. As a result the attack can only be performed
6087 against a client or a server which enables client authentication.
6089 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
6094 ### Changes between 1.0.1s and 1.0.1t [3 May 2016]
6096 * Prevent padding oracle in AES-NI CBC MAC check
6098 A MITM attacker can use a padding oracle attack to decrypt traffic
6099 when the connection uses an AES CBC cipher and the server support
6102 This issue was introduced as part of the fix for Lucky 13 padding
6103 attack ([CVE-2013-0169]). The padding check was rewritten to be in
6104 constant time by making sure that always the same bytes are read and
6105 compared against either the MAC or padding bytes. But it no longer
6106 checked that there was enough data to have both the MAC and padding
6109 This issue was reported by Juraj Somorovsky using TLS-Attacker.
6114 * Fix EVP_EncodeUpdate overflow
6116 An overflow can occur in the EVP_EncodeUpdate() function which is used for
6117 Base64 encoding of binary data. If an attacker is able to supply very large
6118 amounts of input data then a length check can overflow resulting in a heap
6121 Internally to OpenSSL the EVP_EncodeUpdate() function is primarly used by
6122 the `PEM_write_bio*` family of functions. These are mainly used within the
6123 OpenSSL command line applications, so any application which processes data
6124 from an untrusted source and outputs it as a PEM file should be considered
6125 vulnerable to this issue. User applications that call these APIs directly
6126 with large amounts of untrusted data may also be vulnerable.
6128 This issue was reported by Guido Vranken.
6133 * Fix EVP_EncryptUpdate overflow
6135 An overflow can occur in the EVP_EncryptUpdate() function. If an attacker
6136 is able to supply very large amounts of input data after a previous call to
6137 EVP_EncryptUpdate() with a partial block then a length check can overflow
6138 resulting in a heap corruption. Following an analysis of all OpenSSL
6139 internal usage of the EVP_EncryptUpdate() function all usage is one of two
6140 forms. The first form is where the EVP_EncryptUpdate() call is known to be
6141 the first called function after an EVP_EncryptInit(), and therefore that
6142 specific call must be safe. The second form is where the length passed to
6143 EVP_EncryptUpdate() can be seen from the code to be some small value and
6144 therefore there is no possibility of an overflow. Since all instances are
6145 one of these two forms, it is believed that there can be no overflows in
6146 internal code due to this problem. It should be noted that
6147 EVP_DecryptUpdate() can call EVP_EncryptUpdate() in certain code paths.
6148 Also EVP_CipherUpdate() is a synonym for EVP_EncryptUpdate(). All instances
6149 of these calls have also been analysed too and it is believed there are no
6150 instances in internal usage where an overflow could occur.
6152 This issue was reported by Guido Vranken.
6157 * Prevent ASN.1 BIO excessive memory allocation
6159 When ASN.1 data is read from a BIO using functions such as d2i_CMS_bio()
6160 a short invalid encoding can casuse allocation of large amounts of memory
6161 potentially consuming excessive resources or exhausting memory.
6163 Any application parsing untrusted data through d2i BIO functions is
6164 affected. The memory based functions such as d2i_X509() are *not* affected.
6165 Since the memory based functions are used by the TLS library, TLS
6166 applications are not affected.
6168 This issue was reported by Brian Carpenter.
6175 ASN1 Strings that are over 1024 bytes can cause an overread in applications
6176 using the X509_NAME_oneline() function on EBCDIC systems. This could result
6177 in arbitrary stack data being returned in the buffer.
6179 This issue was reported by Guido Vranken.
6184 * Modify behavior of ALPN to invoke callback after SNI/servername
6185 callback, such that updates to the SSL_CTX affect ALPN.
6189 * Remove LOW from the DEFAULT cipher list. This removes singles DES from the
6194 * Only remove the SSLv2 methods with the no-ssl2-method option. When the
6195 methods are enabled and ssl2 is disabled the methods return NULL.
6199 ### Changes between 1.0.1r and 1.0.1s [1 Mar 2016]
6201 * Disable weak ciphers in SSLv3 and up in default builds of OpenSSL.
6202 Builds that are not configured with "enable-weak-ssl-ciphers" will not
6203 provide any "EXPORT" or "LOW" strength ciphers.
6207 * Disable SSLv2 default build, default negotiation and weak ciphers. SSLv2
6208 is by default disabled at build-time. Builds that are not configured with
6209 "enable-ssl2" will not support SSLv2. Even if "enable-ssl2" is used,
6210 users who want to negotiate SSLv2 via the version-flexible SSLv23_method()
6211 will need to explicitly call either of:
6213 SSL_CTX_clear_options(ctx, SSL_OP_NO_SSLv2);
6215 SSL_clear_options(ssl, SSL_OP_NO_SSLv2);
6217 as appropriate. Even if either of those is used, or the application
6218 explicitly uses the version-specific SSLv2_method() or its client and
6219 server variants, SSLv2 ciphers vulnerable to exhaustive search key
6220 recovery have been removed. Specifically, the SSLv2 40-bit EXPORT
6221 ciphers, and SSLv2 56-bit DES are no longer available.
6226 * Fix a double-free in DSA code
6228 A double free bug was discovered when OpenSSL parses malformed DSA private
6229 keys and could lead to a DoS attack or memory corruption for applications
6230 that receive DSA private keys from untrusted sources. This scenario is
6233 This issue was reported to OpenSSL by Adam Langley(Google/BoringSSL) using
6239 * Disable SRP fake user seed to address a server memory leak.
6241 Add a new method SRP_VBASE_get1_by_user that handles the seed properly.
6243 SRP_VBASE_get_by_user had inconsistent memory management behaviour.
6244 In order to fix an unavoidable memory leak, SRP_VBASE_get_by_user
6245 was changed to ignore the "fake user" SRP seed, even if the seed
6248 Users should use SRP_VBASE_get1_by_user instead. Note that in
6249 SRP_VBASE_get1_by_user, caller must free the returned value. Note
6250 also that even though configuring the SRP seed attempts to hide
6251 invalid usernames by continuing the handshake with fake
6252 credentials, this behaviour is not constant time and no strong
6253 guarantees are made that the handshake is indistinguishable from
6254 that of a valid user.
6259 * Fix BN_hex2bn/BN_dec2bn NULL pointer deref/heap corruption
6261 In the BN_hex2bn function the number of hex digits is calculated using an
6262 int value `i`. Later `bn_expand` is called with a value of `i * 4`. For
6263 large values of `i` this can result in `bn_expand` not allocating any
6264 memory because `i * 4` is negative. This can leave the internal BIGNUM data
6265 field as NULL leading to a subsequent NULL ptr deref. For very large values
6266 of `i`, the calculation `i * 4` could be a positive value smaller than `i`.
6267 In this case memory is allocated to the internal BIGNUM data field, but it
6268 is insufficiently sized leading to heap corruption. A similar issue exists
6269 in BN_dec2bn. This could have security consequences if BN_hex2bn/BN_dec2bn
6270 is ever called by user applications with very large untrusted hex/dec data.
6271 This is anticipated to be a rare occurrence.
6273 All OpenSSL internal usage of these functions use data that is not expected
6274 to be untrusted, e.g. config file data or application command line
6275 arguments. If user developed applications generate config file data based
6276 on untrusted data then it is possible that this could also lead to security
6277 consequences. This is also anticipated to be rare.
6279 This issue was reported to OpenSSL by Guido Vranken.
6284 * Fix memory issues in `BIO_*printf` functions
6286 The internal `fmtstr` function used in processing a "%s" format string in
6287 the `BIO_*printf` functions could overflow while calculating the length of a
6288 string and cause an OOB read when printing very long strings.
6290 Additionally the internal `doapr_outch` function can attempt to write to an
6291 OOB memory location (at an offset from the NULL pointer) in the event of a
6292 memory allocation failure. In 1.0.2 and below this could be caused where
6293 the size of a buffer to be allocated is greater than INT_MAX. E.g. this
6294 could be in processing a very long "%s" format string. Memory leaks can
6297 The first issue may mask the second issue dependent on compiler behaviour.
6298 These problems could enable attacks where large amounts of untrusted data
6299 is passed to the `BIO_*printf` functions. If applications use these functions
6300 in this way then they could be vulnerable. OpenSSL itself uses these
6301 functions when printing out human-readable dumps of ASN.1 data. Therefore
6302 applications that print this data could be vulnerable if the data is from
6303 untrusted sources. OpenSSL command line applications could also be
6304 vulnerable where they print out ASN.1 data, or if untrusted data is passed
6305 as command line arguments.
6307 Libssl is not considered directly vulnerable. Additionally certificates etc
6308 received via remote connections via libssl are also unlikely to be able to
6309 trigger these issues because of message size limits enforced within libssl.
6311 This issue was reported to OpenSSL Guido Vranken.
6316 * Side channel attack on modular exponentiation
6318 A side-channel attack was found which makes use of cache-bank conflicts on
6319 the Intel Sandy-Bridge microarchitecture which could lead to the recovery
6320 of RSA keys. The ability to exploit this issue is limited as it relies on
6321 an attacker who has control of code in a thread running on the same
6322 hyper-threaded core as the victim thread which is performing decryptions.
6324 This issue was reported to OpenSSL by Yuval Yarom, The University of
6325 Adelaide and NICTA, Daniel Genkin, Technion and Tel Aviv University, and
6326 Nadia Heninger, University of Pennsylvania with more information at
6327 <http://cachebleed.info>.
6332 * Change the req command to generate a 2048-bit RSA/DSA key by default,
6333 if no keysize is specified with default_bits. This fixes an
6334 omission in an earlier change that changed all RSA/DSA key generation
6335 commands to use 2048 bits by default.
6339 ### Changes between 1.0.1q and 1.0.1r [28 Jan 2016]
6341 * Protection for DH small subgroup attacks
6343 As a precautionary measure the SSL_OP_SINGLE_DH_USE option has been
6344 switched on by default and cannot be disabled. This could have some
6349 * SSLv2 doesn't block disabled ciphers
6351 A malicious client can negotiate SSLv2 ciphers that have been disabled on
6352 the server and complete SSLv2 handshakes even if all SSLv2 ciphers have
6353 been disabled, provided that the SSLv2 protocol was not also disabled via
6356 This issue was reported to OpenSSL on 26th December 2015 by Nimrod Aviram
6357 and Sebastian Schinzel.
6362 * Reject DH handshakes with parameters shorter than 1024 bits.
6366 ### Changes between 1.0.1p and 1.0.1q [3 Dec 2015]
6368 * Certificate verify crash with missing PSS parameter
6370 The signature verification routines will crash with a NULL pointer
6371 dereference if presented with an ASN.1 signature using the RSA PSS
6372 algorithm and absent mask generation function parameter. Since these
6373 routines are used to verify certificate signature algorithms this can be
6374 used to crash any certificate verification operation and exploited in a
6375 DoS attack. Any application which performs certificate verification is
6376 vulnerable including OpenSSL clients and servers which enable client
6379 This issue was reported to OpenSSL by Loïc Jonas Etienne (Qnective AG).
6384 * X509_ATTRIBUTE memory leak
6386 When presented with a malformed X509_ATTRIBUTE structure OpenSSL will leak
6387 memory. This structure is used by the PKCS#7 and CMS routines so any
6388 application which reads PKCS#7 or CMS data from untrusted sources is
6389 affected. SSL/TLS is not affected.
6391 This issue was reported to OpenSSL by Adam Langley (Google/BoringSSL) using
6397 * Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
6398 This changes the decoding behaviour for some invalid messages,
6399 though the change is mostly in the more lenient direction, and
6400 legacy behaviour is preserved as much as possible.
6404 * In DSA_generate_parameters_ex, if the provided seed is too short,
6405 use a random seed, as already documented.
6407 *Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>*
6409 ### Changes between 1.0.1o and 1.0.1p [9 Jul 2015]
6411 * Alternate chains certificate forgery
6413 During certificate verfification, OpenSSL will attempt to find an
6414 alternative certificate chain if the first attempt to build such a chain
6415 fails. An error in the implementation of this logic can mean that an
6416 attacker could cause certain checks on untrusted certificates to be
6417 bypassed, such as the CA flag, enabling them to use a valid leaf
6418 certificate to act as a CA and "issue" an invalid certificate.
6420 This issue was reported to OpenSSL by Adam Langley/David Benjamin
6426 * Race condition handling PSK identify hint
6428 If PSK identity hints are received by a multi-threaded client then
6429 the values are wrongly updated in the parent SSL_CTX structure. This can
6430 result in a race condition potentially leading to a double free of the
6436 ### Changes between 1.0.1n and 1.0.1o [12 Jun 2015]
6438 * Fix HMAC ABI incompatibility. The previous version introduced an ABI
6439 incompatibility in the handling of HMAC. The previous ABI has now been
6442 ### Changes between 1.0.1m and 1.0.1n [11 Jun 2015]
6444 * Malformed ECParameters causes infinite loop
6446 When processing an ECParameters structure OpenSSL enters an infinite loop
6447 if the curve specified is over a specially malformed binary polynomial
6450 This can be used to perform denial of service against any
6451 system which processes public keys, certificate requests or
6452 certificates. This includes TLS clients and TLS servers with
6453 client authentication enabled.
6455 This issue was reported to OpenSSL by Joseph Barr-Pixton.
6460 * Exploitable out-of-bounds read in X509_cmp_time
6462 X509_cmp_time does not properly check the length of the ASN1_TIME
6463 string and can read a few bytes out of bounds. In addition,
6464 X509_cmp_time accepts an arbitrary number of fractional seconds in the
6467 An attacker can use this to craft malformed certificates and CRLs of
6468 various sizes and potentially cause a segmentation fault, resulting in
6469 a DoS on applications that verify certificates or CRLs. TLS clients
6470 that verify CRLs are affected. TLS clients and servers with client
6471 authentication enabled may be affected if they use custom verification
6474 This issue was reported to OpenSSL by Robert Swiecki (Google), and
6475 independently by Hanno Böck.
6480 * PKCS7 crash with missing EnvelopedContent
6482 The PKCS#7 parsing code does not handle missing inner EncryptedContent
6483 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs
6484 with missing content and trigger a NULL pointer dereference on parsing.
6486 Applications that decrypt PKCS#7 data or otherwise parse PKCS#7
6487 structures from untrusted sources are affected. OpenSSL clients and
6488 servers are not affected.
6490 This issue was reported to OpenSSL by Michal Zalewski (Google).
6495 * CMS verify infinite loop with unknown hash function
6497 When verifying a signedData message the CMS code can enter an infinite loop
6498 if presented with an unknown hash function OID. This can be used to perform
6499 denial of service against any system which verifies signedData messages using
6501 This issue was reported to OpenSSL by Johannes Bauer.
6506 * Race condition handling NewSessionTicket
6508 If a NewSessionTicket is received by a multi-threaded client when attempting to
6509 reuse a previous ticket then a race condition can occur potentially leading to
6510 a double free of the ticket data.
6515 * Reject DH handshakes with parameters shorter than 768 bits.
6517 *Kurt Roeckx and Emilia Kasper*
6519 * dhparam: generate 2048-bit parameters by default.
6521 *Kurt Roeckx and Emilia Kasper*
6523 ### Changes between 1.0.1l and 1.0.1m [19 Mar 2015]
6525 * Segmentation fault in ASN1_TYPE_cmp fix
6527 The function ASN1_TYPE_cmp will crash with an invalid read if an attempt is
6528 made to compare ASN.1 boolean types. Since ASN1_TYPE_cmp is used to check
6529 certificate signature algorithm consistency this can be used to crash any
6530 certificate verification operation and exploited in a DoS attack. Any
6531 application which performs certificate verification is vulnerable including
6532 OpenSSL clients and servers which enable client authentication.
6537 * ASN.1 structure reuse memory corruption fix
6539 Reusing a structure in ASN.1 parsing may allow an attacker to cause
6540 memory corruption via an invalid write. Such reuse is and has been
6541 strongly discouraged and is believed to be rare.
6543 Applications that parse structures containing CHOICE or ANY DEFINED BY
6544 components may be affected. Certificate parsing (d2i_X509 and related
6545 functions) are however not affected. OpenSSL clients and servers are
6551 * PKCS7 NULL pointer dereferences fix
6553 The PKCS#7 parsing code does not handle missing outer ContentInfo
6554 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs with
6555 missing content and trigger a NULL pointer dereference on parsing.
6557 Applications that verify PKCS#7 signatures, decrypt PKCS#7 data or
6558 otherwise parse PKCS#7 structures from untrusted sources are
6559 affected. OpenSSL clients and servers are not affected.
6561 This issue was reported to OpenSSL by Michal Zalewski (Google).
6566 * DoS via reachable assert in SSLv2 servers fix
6568 A malicious client can trigger an OPENSSL_assert (i.e., an abort) in
6569 servers that both support SSLv2 and enable export cipher suites by sending
6570 a specially crafted SSLv2 CLIENT-MASTER-KEY message.
6572 This issue was discovered by Sean Burford (Google) and Emilia Käsper
6573 (OpenSSL development team).
6578 * Use After Free following d2i_ECPrivatekey error fix
6580 A malformed EC private key file consumed via the d2i_ECPrivateKey function
6581 could cause a use after free condition. This, in turn, could cause a double
6582 free in several private key parsing functions (such as d2i_PrivateKey
6583 or EVP_PKCS82PKEY) and could lead to a DoS attack or memory corruption
6584 for applications that receive EC private keys from untrusted
6585 sources. This scenario is considered rare.
6587 This issue was discovered by the BoringSSL project and fixed in their
6593 * X509_to_X509_REQ NULL pointer deref fix
6595 The function X509_to_X509_REQ will crash with a NULL pointer dereference if
6596 the certificate key is invalid. This function is rarely used in practice.
6598 This issue was discovered by Brian Carpenter.
6603 * Removed the export ciphers from the DEFAULT ciphers
6607 ### Changes between 1.0.1k and 1.0.1l [15 Jan 2015]
6609 * Build fixes for the Windows and OpenVMS platforms
6611 *Matt Caswell and Richard Levitte*
6613 ### Changes between 1.0.1j and 1.0.1k [8 Jan 2015]
6615 * Fix DTLS segmentation fault in dtls1_get_record. A carefully crafted DTLS
6616 message can cause a segmentation fault in OpenSSL due to a NULL pointer
6617 dereference. This could lead to a Denial Of Service attack. Thanks to
6618 Markus Stenberg of Cisco Systems, Inc. for reporting this issue.
6623 * Fix DTLS memory leak in dtls1_buffer_record. A memory leak can occur in the
6624 dtls1_buffer_record function under certain conditions. In particular this
6625 could occur if an attacker sent repeated DTLS records with the same
6626 sequence number but for the next epoch. The memory leak could be exploited
6627 by an attacker in a Denial of Service attack through memory exhaustion.
6628 Thanks to Chris Mueller for reporting this issue.
6633 * Fix issue where no-ssl3 configuration sets method to NULL. When openssl is
6634 built with the no-ssl3 option and a SSL v3 ClientHello is received the ssl
6635 method would be set to NULL which could later result in a NULL pointer
6636 dereference. Thanks to Frank Schmirler for reporting this issue.
6641 * Abort handshake if server key exchange message is omitted for ephemeral
6644 Thanks to Karthikeyan Bhargavan of the PROSECCO team at INRIA for
6645 reporting this issue.
6650 * Remove non-export ephemeral RSA code on client and server. This code
6651 violated the TLS standard by allowing the use of temporary RSA keys in
6652 non-export ciphersuites and could be used by a server to effectively
6653 downgrade the RSA key length used to a value smaller than the server
6654 certificate. Thanks for Karthikeyan Bhargavan of the PROSECCO team at
6655 INRIA or reporting this issue.
6660 * Fixed issue where DH client certificates are accepted without verification.
6661 An OpenSSL server will accept a DH certificate for client authentication
6662 without the certificate verify message. This effectively allows a client to
6663 authenticate without the use of a private key. This only affects servers
6664 which trust a client certificate authority which issues certificates
6665 containing DH keys: these are extremely rare and hardly ever encountered.
6666 Thanks for Karthikeyan Bhargavan of the PROSECCO team at INRIA or reporting
6672 * Ensure that the session ID context of an SSL is updated when its
6673 SSL_CTX is updated via SSL_set_SSL_CTX.
6675 The session ID context is typically set from the parent SSL_CTX,
6676 and can vary with the CTX.
6680 * Fix various certificate fingerprint issues.
6682 By using non-DER or invalid encodings outside the signed portion of a
6683 certificate the fingerprint can be changed without breaking the signature.
6684 Although no details of the signed portion of the certificate can be changed
6685 this can cause problems with some applications: e.g. those using the
6686 certificate fingerprint for blacklists.
6688 1. Reject signatures with non zero unused bits.
6690 If the BIT STRING containing the signature has non zero unused bits reject
6691 the signature. All current signature algorithms require zero unused bits.
6693 2. Check certificate algorithm consistency.
6695 Check the AlgorithmIdentifier inside TBS matches the one in the
6696 certificate signature. NB: this will result in signature failure
6697 errors for some broken certificates.
6699 Thanks to Konrad Kraszewski from Google for reporting this issue.
6701 3. Check DSA/ECDSA signatures use DER.
6703 Re-encode DSA/ECDSA signatures and compare with the original received
6704 signature. Return an error if there is a mismatch.
6706 This will reject various cases including garbage after signature
6707 (thanks to Antti Karjalainen and Tuomo Untinen from the Codenomicon CROSS
6708 program for discovering this case) and use of BER or invalid ASN.1 INTEGERs
6709 (negative or with leading zeroes).
6711 Further analysis was conducted and fixes were developed by Stephen Henson
6712 of the OpenSSL core team.
6718 * Correct Bignum squaring. Bignum squaring (BN_sqr) may produce incorrect
6719 results on some platforms, including x86_64. This bug occurs at random
6720 with a very low probability, and is not known to be exploitable in any
6721 way, though its exact impact is difficult to determine. Thanks to Pieter
6722 Wuille (Blockstream) who reported this issue and also suggested an initial
6723 fix. Further analysis was conducted by the OpenSSL development team and
6724 Adam Langley of Google. The final fix was developed by Andy Polyakov of
6725 the OpenSSL core team.
6730 * Do not resume sessions on the server if the negotiated protocol
6731 version does not match the session's version. Resuming with a different
6732 version, while not strictly forbidden by the RFC, is of questionable
6733 sanity and breaks all known clients.
6735 *David Benjamin, Emilia Käsper*
6737 * Tighten handling of the ChangeCipherSpec (CCS) message: reject
6738 early CCS messages during renegotiation. (Note that because
6739 renegotiation is encrypted, this early CCS was not exploitable.)
6743 * Tighten client-side session ticket handling during renegotiation:
6744 ensure that the client only accepts a session ticket if the server sends
6745 the extension anew in the ServerHello. Previously, a TLS client would
6746 reuse the old extension state and thus accept a session ticket if one was
6747 announced in the initial ServerHello.
6749 Similarly, ensure that the client requires a session ticket if one
6750 was advertised in the ServerHello. Previously, a TLS client would
6751 ignore a missing NewSessionTicket message.
6755 ### Changes between 1.0.1i and 1.0.1j [15 Oct 2014]
6759 A flaw in the DTLS SRTP extension parsing code allows an attacker, who
6760 sends a carefully crafted handshake message, to cause OpenSSL to fail
6761 to free up to 64k of memory causing a memory leak. This could be
6762 exploited in a Denial Of Service attack. This issue affects OpenSSL
6763 1.0.1 server implementations for both SSL/TLS and DTLS regardless of
6764 whether SRTP is used or configured. Implementations of OpenSSL that
6765 have been compiled with OPENSSL_NO_SRTP defined are not affected.
6767 The fix was developed by the OpenSSL team.
6772 * Session Ticket Memory Leak.
6774 When an OpenSSL SSL/TLS/DTLS server receives a session ticket the
6775 integrity of that ticket is first verified. In the event of a session
6776 ticket integrity check failing, OpenSSL will fail to free memory
6777 causing a memory leak. By sending a large number of invalid session
6778 tickets an attacker could exploit this issue in a Denial Of Service
6784 * Build option no-ssl3 is incomplete.
6786 When OpenSSL is configured with "no-ssl3" as a build option, servers
6787 could accept and complete a SSL 3.0 handshake, and clients could be
6788 configured to send them.
6791 *Akamai and the OpenSSL team*
6793 * Add support for TLS_FALLBACK_SCSV.
6794 Client applications doing fallback retries should call
6795 SSL_set_mode(s, SSL_MODE_SEND_FALLBACK_SCSV).
6798 *Adam Langley, Bodo Moeller*
6800 * Add additional DigestInfo checks.
6802 Re-encode DigestInto in DER and check against the original when
6803 verifying RSA signature: this will reject any improperly encoded
6804 DigestInfo structures.
6806 Note: this is a precautionary measure and no attacks are currently known.
6810 ### Changes between 1.0.1h and 1.0.1i [6 Aug 2014]
6812 * Fix SRP buffer overrun vulnerability. Invalid parameters passed to the
6813 SRP code can be overrun an internal buffer. Add sanity check that
6814 g, A, B < N to SRP code.
6816 Thanks to Sean Devlin and Watson Ladd of Cryptography Services, NCC
6817 Group for discovering this issue.
6822 * A flaw in the OpenSSL SSL/TLS server code causes the server to negotiate
6823 TLS 1.0 instead of higher protocol versions when the ClientHello message
6824 is badly fragmented. This allows a man-in-the-middle attacker to force a
6825 downgrade to TLS 1.0 even if both the server and the client support a
6826 higher protocol version, by modifying the client's TLS records.
6828 Thanks to David Benjamin and Adam Langley (Google) for discovering and
6829 researching this issue.
6834 * OpenSSL DTLS clients enabling anonymous (EC)DH ciphersuites are subject
6835 to a denial of service attack. A malicious server can crash the client
6836 with a null pointer dereference (read) by specifying an anonymous (EC)DH
6837 ciphersuite and sending carefully crafted handshake messages.
6839 Thanks to Felix Gröbert (Google) for discovering and researching this
6845 * By sending carefully crafted DTLS packets an attacker could cause openssl
6846 to leak memory. This can be exploited through a Denial of Service attack.
6847 Thanks to Adam Langley for discovering and researching this issue.
6852 * An attacker can force openssl to consume large amounts of memory whilst
6853 processing DTLS handshake messages. This can be exploited through a
6854 Denial of Service attack.
6855 Thanks to Adam Langley for discovering and researching this issue.
6860 * An attacker can force an error condition which causes openssl to crash
6861 whilst processing DTLS packets due to memory being freed twice. This
6862 can be exploited through a Denial of Service attack.
6863 Thanks to Adam Langley and Wan-Teh Chang for discovering and researching
6869 * If a multithreaded client connects to a malicious server using a resumed
6870 session and the server sends an ec point format extension it could write
6871 up to 255 bytes to freed memory.
6873 Thanks to Gabor Tyukasz (LogMeIn Inc) for discovering and researching this
6879 * A malicious server can crash an OpenSSL client with a null pointer
6880 dereference (read) by specifying an SRP ciphersuite even though it was not
6881 properly negotiated with the client. This can be exploited through a
6882 Denial of Service attack.
6884 Thanks to Joonas Kuorilehto and Riku Hietamäki (Codenomicon) for
6885 discovering and researching this issue.
6890 * A flaw in OBJ_obj2txt may cause pretty printing functions such as
6891 X509_name_oneline, X509_name_print_ex et al. to leak some information
6892 from the stack. Applications may be affected if they echo pretty printing
6893 output to the attacker.
6895 Thanks to Ivan Fratric (Google) for discovering this issue.
6898 *Emilia Käsper, and Steve Henson*
6900 * Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
6901 for corner cases. (Certain input points at infinity could lead to
6902 bogus results, with non-infinity inputs mapped to infinity too.)
6906 ### Changes between 1.0.1g and 1.0.1h [5 Jun 2014]
6908 * Fix for SSL/TLS MITM flaw. An attacker using a carefully crafted
6909 handshake can force the use of weak keying material in OpenSSL
6910 SSL/TLS clients and servers.
6912 Thanks to KIKUCHI Masashi (Lepidum Co. Ltd.) for discovering and
6913 researching this issue. ([CVE-2014-0224])
6915 *KIKUCHI Masashi, Steve Henson*
6917 * Fix DTLS recursion flaw. By sending an invalid DTLS handshake to an
6918 OpenSSL DTLS client the code can be made to recurse eventually crashing
6921 Thanks to Imre Rad (Search-Lab Ltd.) for discovering this issue.
6924 *Imre Rad, Steve Henson*
6926 * Fix DTLS invalid fragment vulnerability. A buffer overrun attack can
6927 be triggered by sending invalid DTLS fragments to an OpenSSL DTLS
6928 client or server. This is potentially exploitable to run arbitrary
6929 code on a vulnerable client or server.
6931 Thanks to Jüri Aedla for reporting this issue. ([CVE-2014-0195])
6933 *Jüri Aedla, Steve Henson*
6935 * Fix bug in TLS code where clients enable anonymous ECDH ciphersuites
6936 are subject to a denial of service attack.
6938 Thanks to Felix Gröbert and Ivan Fratric at Google for discovering
6939 this issue. ([CVE-2014-3470])
6941 *Felix Gröbert, Ivan Fratric, Steve Henson*
6943 * Harmonize version and its documentation. -f flag is used to display
6946 *mancha <mancha1@zoho.com>*
6948 * Fix eckey_priv_encode so it immediately returns an error upon a failure
6949 in i2d_ECPrivateKey.
6951 *mancha <mancha1@zoho.com>*
6953 * Fix some double frees. These are not thought to be exploitable.
6955 *mancha <mancha1@zoho.com>*
6957 ### Changes between 1.0.1f and 1.0.1g [7 Apr 2014]
6959 * A missing bounds check in the handling of the TLS heartbeat extension
6960 can be used to reveal up to 64k of memory to a connected client or
6963 Thanks for Neel Mehta of Google Security for discovering this bug and to
6964 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
6965 preparing the fix ([CVE-2014-0160])
6967 *Adam Langley, Bodo Moeller*
6969 * Fix for the attack described in the paper "Recovering OpenSSL
6970 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
6971 by Yuval Yarom and Naomi Benger. Details can be obtained from:
6972 <http://eprint.iacr.org/2014/140>
6974 Thanks to Yuval Yarom and Naomi Benger for discovering this
6975 flaw and to Yuval Yarom for supplying a fix ([CVE-2014-0076])
6977 *Yuval Yarom and Naomi Benger*
6979 * TLS pad extension: draft-agl-tls-padding-03
6981 Workaround for the "TLS hang bug" (see FAQ and PR#2771): if the
6982 TLS client Hello record length value would otherwise be > 255 and
6983 less that 512 pad with a dummy extension containing zeroes so it
6984 is at least 512 bytes long.
6986 *Adam Langley, Steve Henson*
6988 ### Changes between 1.0.1e and 1.0.1f [6 Jan 2014]
6990 * Fix for TLS record tampering bug. A carefully crafted invalid
6991 handshake could crash OpenSSL with a NULL pointer exception.
6992 Thanks to Anton Johansson for reporting this issues.
6995 * Keep original DTLS digest and encryption contexts in retransmission
6996 structures so we can use the previous session parameters if they need
6997 to be resent. ([CVE-2013-6450])
7001 * Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which
7002 avoids preferring ECDHE-ECDSA ciphers when the client appears to be
7003 Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for
7004 several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug
7005 is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing
7006 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer.
7008 *Rob Stradling, Adam Langley*
7010 ### Changes between 1.0.1d and 1.0.1e [11 Feb 2013]
7012 * Correct fix for CVE-2013-0169. The original didn't work on AES-NI
7013 supporting platforms or when small records were transferred.
7015 *Andy Polyakov, Steve Henson*
7017 ### Changes between 1.0.1c and 1.0.1d [5 Feb 2013]
7019 * Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
7021 This addresses the flaw in CBC record processing discovered by
7022 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
7023 at: <http://www.isg.rhul.ac.uk/tls/>
7025 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
7026 Security Group at Royal Holloway, University of London
7027 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
7028 Emilia Käsper for the initial patch.
7031 *Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson*
7033 * Fix flaw in AESNI handling of TLS 1.2 and 1.1 records for CBC mode
7034 ciphersuites which can be exploited in a denial of service attack.
7035 Thanks go to and to Adam Langley <agl@chromium.org> for discovering
7036 and detecting this bug and to Wolfgang Ettlinger
7037 <wolfgang.ettlinger@gmail.com> for independently discovering this issue.
7042 * Return an error when checking OCSP signatures when key is NULL.
7043 This fixes a DoS attack. ([CVE-2013-0166])
7047 * Make openssl verify return errors.
7049 *Chris Palmer <palmer@google.com> and Ben Laurie*
7051 * Call OCSP Stapling callback after ciphersuite has been chosen, so
7052 the right response is stapled. Also change SSL_get_certificate()
7053 so it returns the certificate actually sent.
7054 See <http://rt.openssl.org/Ticket/Display.html?id=2836>.
7056 *Rob Stradling <rob.stradling@comodo.com>*
7058 * Fix possible deadlock when decoding public keys.
7062 * Don't use TLS 1.0 record version number in initial client hello
7067 ### Changes between 1.0.1b and 1.0.1c [10 May 2012]
7069 * Sanity check record length before skipping explicit IV in TLS
7070 1.2, 1.1 and DTLS to fix DoS attack.
7072 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
7073 fuzzing as a service testing platform.
7078 * Initialise tkeylen properly when encrypting CMS messages.
7079 Thanks to Solar Designer of Openwall for reporting this issue.
7083 * In FIPS mode don't try to use composite ciphers as they are not
7088 ### Changes between 1.0.1a and 1.0.1b [26 Apr 2012]
7090 * OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and
7091 1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately
7092 mean any application compiled against OpenSSL 1.0.0 headers setting
7093 SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disabling
7094 TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to
7095 0x10000000L Any application which was previously compiled against
7096 OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1
7097 will need to be recompiled as a result. Letting be results in
7098 inability to disable specifically TLS 1.1 and in client context,
7099 in unlike event, limit maximum offered version to TLS 1.0 [see below].
7103 * In order to ensure interoperability SSL_OP_NO_protocolX does not
7104 disable just protocol X, but all protocols above X *if* there are
7105 protocols *below* X still enabled. In more practical terms it means
7106 that if application wants to disable TLS1.0 in favor of TLS1.1 and
7107 above, it's not sufficient to pass `SSL_OP_NO_TLSv1`, one has to pass
7108 `SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2`. This applies to
7113 ### Changes between 1.0.1 and 1.0.1a [19 Apr 2012]
7115 * Check for potentially exploitable overflows in asn1_d2i_read_bio
7116 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
7117 in CRYPTO_realloc_clean.
7119 Thanks to Tavis Ormandy, Google Security Team, for discovering this
7120 issue and to Adam Langley <agl@chromium.org> for fixing it.
7123 *Adam Langley (Google), Tavis Ormandy, Google Security Team*
7125 * Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections.
7129 * Workarounds for some broken servers that "hang" if a client hello
7130 record length exceeds 255 bytes.
7132 1. Do not use record version number > TLS 1.0 in initial client
7133 hello: some (but not all) hanging servers will now work.
7134 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate
7135 the number of ciphers sent in the client hello. This should be
7136 set to an even number, such as 50, for example by passing:
7137 -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure.
7138 Most broken servers should now work.
7139 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable
7140 TLS 1.2 client support entirely.
7144 * Fix SEGV in Vector Permutation AES module observed in OpenSSH.
7148 ### Changes between 1.0.0h and 1.0.1 [14 Mar 2012]
7150 * Add compatibility with old MDC2 signatures which use an ASN1 OCTET
7151 STRING form instead of a DigestInfo.
7155 * The format used for MDC2 RSA signatures is inconsistent between EVP
7156 and the RSA_sign/RSA_verify functions. This was made more apparent when
7157 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
7158 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
7159 the correct format in RSA_verify so both forms transparently work.
7163 * Some servers which support TLS 1.0 can choke if we initially indicate
7164 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
7165 encrypted premaster secret. As a workaround use the maximum permitted
7166 client version in client hello, this should keep such servers happy
7167 and still work with previous versions of OpenSSL.
7171 * Add support for TLS/DTLS heartbeats.
7173 *Robin Seggelmann <seggelmann@fh-muenster.de>*
7175 * Add support for SCTP.
7177 *Robin Seggelmann <seggelmann@fh-muenster.de>*
7179 * Improved PRNG seeding for VOS.
7181 *Paul Green <Paul.Green@stratus.com>*
7183 * Extensive assembler packs updates, most notably:
7185 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
7186 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
7187 - x86_64: bit-sliced AES implementation;
7188 - ARM: NEON support, contemporary platforms optimizations;
7189 - s390x: z196 support;
7190 - `*`: GHASH and GF(2^m) multiplication implementations;
7194 * Make TLS-SRP code conformant with RFC 5054 API cleanup
7195 (removal of unnecessary code)
7197 *Peter Sylvester <peter.sylvester@edelweb.fr>*
7199 * Add TLS key material exporter from RFC 5705.
7203 * Add DTLS-SRTP negotiation from RFC 5764.
7207 * Add Next Protocol Negotiation,
7208 <http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00>. Can be
7209 disabled with a no-npn flag to config or Configure. Code donated
7212 *Adam Langley <agl@google.com> and Ben Laurie*
7214 * Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
7215 NIST-P256, NIST-P521, with constant-time single point multiplication on
7216 typical inputs. Compiler support for the nonstandard type `__uint128_t` is
7217 required to use this (present in gcc 4.4 and later, for 64-bit builds).
7218 Code made available under Apache License version 2.0.
7220 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
7221 line to include this in your build of OpenSSL, and run "make depend" (or
7222 "make update"). This enables the following EC_METHODs:
7224 EC_GFp_nistp224_method()
7225 EC_GFp_nistp256_method()
7226 EC_GFp_nistp521_method()
7228 EC_GROUP_new_by_curve_name() will automatically use these (while
7229 EC_GROUP_new_curve_GFp() currently prefers the more flexible
7232 *Emilia Käsper, Adam Langley, Bodo Moeller (Google)*
7234 * Use type ossl_ssize_t instead of ssize_t which isn't available on
7235 all platforms. Move ssize_t definition from e_os.h to the public
7236 header file e_os2.h as it now appears in public header file cms.h
7240 * New -sigopt option to the ca, req and x509 utilities. Additional
7241 signature parameters can be passed using this option and in
7246 * Add RSA PSS signing function. This will generate and set the
7247 appropriate AlgorithmIdentifiers for PSS based on those in the
7248 corresponding EVP_MD_CTX structure. No application support yet.
7252 * Support for companion algorithm specific ASN1 signing routines.
7253 New function ASN1_item_sign_ctx() signs a pre-initialised
7254 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
7255 the appropriate parameters.
7259 * Add new algorithm specific ASN1 verification initialisation function
7260 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
7261 handling will be the same no matter what EVP_PKEY_METHOD is used.
7262 Add a PSS handler to support verification of PSS signatures: checked
7263 against a number of sample certificates.
7267 * Add signature printing for PSS. Add PSS OIDs.
7269 *Steve Henson, Martin Kaiser <lists@kaiser.cx>*
7271 * Add algorithm specific signature printing. An individual ASN1 method
7272 can now print out signatures instead of the standard hex dump.
7274 More complex signatures (e.g. PSS) can print out more meaningful
7275 information. Include DSA version that prints out the signature
7280 * Password based recipient info support for CMS library: implementing
7285 * Split password based encryption into PBES2 and PBKDF2 functions. This
7286 neatly separates the code into cipher and PBE sections and is required
7287 for some algorithms that split PBES2 into separate pieces (such as
7288 password based CMS).
7292 * Session-handling fixes:
7293 - Fix handling of connections that are resuming with a session ID,
7294 but also support Session Tickets.
7295 - Fix a bug that suppressed issuing of a new ticket if the client
7296 presented a ticket with an expired session.
7297 - Try to set the ticket lifetime hint to something reasonable.
7298 - Make tickets shorter by excluding irrelevant information.
7299 - On the client side, don't ignore renewed tickets.
7301 *Adam Langley, Bodo Moeller (Google)*
7303 * Fix PSK session representation.
7307 * Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
7309 This work was sponsored by Intel.
7313 * Add GCM support to TLS library. Some custom code is needed to split
7314 the IV between the fixed (from PRF) and explicit (from TLS record)
7315 portions. This adds all GCM ciphersuites supported by RFC5288 and
7316 RFC5289. Generalise some `AES*` cipherstrings to include GCM and
7317 add a special AESGCM string for GCM only.
7321 * Expand range of ctrls for AES GCM. Permit setting invocation
7322 field on decrypt and retrieval of invocation field only on encrypt.
7326 * Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
7327 As required by RFC5289 these ciphersuites cannot be used if for
7328 versions of TLS earlier than 1.2.
7332 * For FIPS capable OpenSSL interpret a NULL default public key method
7333 as unset and return the appropriate default but do *not* set the default.
7334 This means we can return the appropriate method in applications that
7335 switch between FIPS and non-FIPS modes.
7339 * Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
7340 ENGINE is used then we cannot handle that in the FIPS module so we
7341 keep original code iff non-FIPS operations are allowed.
7345 * Add -attime option to openssl utilities.
7347 *Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson*
7349 * Redirect DSA and DH operations to FIPS module in FIPS mode.
7353 * Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
7354 FIPS EC methods unconditionally for now.
7358 * New build option no-ec2m to disable characteristic 2 code.
7362 * Backport libcrypto audit of return value checking from 1.1.0-dev; not
7363 all cases can be covered as some introduce binary incompatibilities.
7367 * Redirect RSA operations to FIPS module including keygen,
7368 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
7372 * Add similar low-level API blocking to ciphers.
7376 * low-level digest APIs are not approved in FIPS mode: any attempt
7377 to use these will cause a fatal error. Applications that *really* want
7378 to use them can use the `private_*` version instead.
7382 * Redirect cipher operations to FIPS module for FIPS builds.
7386 * Redirect digest operations to FIPS module for FIPS builds.
7390 * Update build system to add "fips" flag which will link in fipscanister.o
7391 for static and shared library builds embedding a signature if needed.
7395 * Output TLS supported curves in preference order instead of numerical
7396 order. This is currently hardcoded for the highest order curves first.
7397 This should be configurable so applications can judge speed vs strength.
7401 * Add TLS v1.2 server support for client authentication.
7405 * Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
7410 * Functions FIPS_mode_set() and FIPS_mode() which call the underlying
7411 FIPS modules versions.
7415 * Add TLS v1.2 client side support for client authentication. Keep cache
7416 of handshake records longer as we don't know the hash algorithm to use
7417 until after the certificate request message is received.
7421 * Initial TLS v1.2 client support. Add a default signature algorithms
7422 extension including all the algorithms we support. Parse new signature
7423 format in client key exchange. Relax some ECC signing restrictions for
7424 TLS v1.2 as indicated in RFC5246.
7428 * Add server support for TLS v1.2 signature algorithms extension. Switch
7429 to new signature format when needed using client digest preference.
7430 All server ciphersuites should now work correctly in TLS v1.2. No client
7431 support yet and no support for client certificates.
7435 * Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
7436 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
7437 ciphersuites. At present only RSA key exchange ciphersuites work with
7438 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
7439 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
7440 and version checking.
7444 * New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
7445 with this defined it will not be affected by any changes to ssl internal
7446 structures. Add several utility functions to allow openssl application
7447 to work with OPENSSL_NO_SSL_INTERN defined.
7451 * A long standing patch to add support for SRP from EdelWeb (Peter
7452 Sylvester and Christophe Renou) was integrated.
7453 *Christophe Renou <christophe.renou@edelweb.fr>, Peter Sylvester
7454 <peter.sylvester@edelweb.fr>, Tom Wu <tjw@cs.stanford.edu>, and
7457 * Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
7461 * Permit abbreviated handshakes when renegotiating using the function
7462 SSL_renegotiate_abbreviated().
7464 *Robin Seggelmann <seggelmann@fh-muenster.de>*
7466 * Add call to ENGINE_register_all_complete() to
7467 ENGINE_load_builtin_engines(), so some implementations get used
7468 automatically instead of needing explicit application support.
7472 * Add support for TLS key exporter as described in RFC5705.
7474 *Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson*
7476 * Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
7477 a few changes are required:
7479 Add SSL_OP_NO_TLSv1_1 flag.
7480 Add TLSv1_1 methods.
7481 Update version checking logic to handle version 1.1.
7482 Add explicit IV handling (ported from DTLS code).
7483 Add command line options to s_client/s_server.
7490 ### Changes between 1.0.0s and 1.0.0t [3 Dec 2015]
7492 * X509_ATTRIBUTE memory leak
7494 When presented with a malformed X509_ATTRIBUTE structure OpenSSL will leak
7495 memory. This structure is used by the PKCS#7 and CMS routines so any
7496 application which reads PKCS#7 or CMS data from untrusted sources is
7497 affected. SSL/TLS is not affected.
7499 This issue was reported to OpenSSL by Adam Langley (Google/BoringSSL) using
7505 * Race condition handling PSK identify hint
7507 If PSK identity hints are received by a multi-threaded client then
7508 the values are wrongly updated in the parent SSL_CTX structure. This can
7509 result in a race condition potentially leading to a double free of the
7515 ### Changes between 1.0.0r and 1.0.0s [11 Jun 2015]
7517 * Malformed ECParameters causes infinite loop
7519 When processing an ECParameters structure OpenSSL enters an infinite loop
7520 if the curve specified is over a specially malformed binary polynomial
7523 This can be used to perform denial of service against any
7524 system which processes public keys, certificate requests or
7525 certificates. This includes TLS clients and TLS servers with
7526 client authentication enabled.
7528 This issue was reported to OpenSSL by Joseph Barr-Pixton.
7533 * Exploitable out-of-bounds read in X509_cmp_time
7535 X509_cmp_time does not properly check the length of the ASN1_TIME
7536 string and can read a few bytes out of bounds. In addition,
7537 X509_cmp_time accepts an arbitrary number of fractional seconds in the
7540 An attacker can use this to craft malformed certificates and CRLs of
7541 various sizes and potentially cause a segmentation fault, resulting in
7542 a DoS on applications that verify certificates or CRLs. TLS clients
7543 that verify CRLs are affected. TLS clients and servers with client
7544 authentication enabled may be affected if they use custom verification
7547 This issue was reported to OpenSSL by Robert Swiecki (Google), and
7548 independently by Hanno Böck.
7553 * PKCS7 crash with missing EnvelopedContent
7555 The PKCS#7 parsing code does not handle missing inner EncryptedContent
7556 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs
7557 with missing content and trigger a NULL pointer dereference on parsing.
7559 Applications that decrypt PKCS#7 data or otherwise parse PKCS#7
7560 structures from untrusted sources are affected. OpenSSL clients and
7561 servers are not affected.
7563 This issue was reported to OpenSSL by Michal Zalewski (Google).
7568 * CMS verify infinite loop with unknown hash function
7570 When verifying a signedData message the CMS code can enter an infinite loop
7571 if presented with an unknown hash function OID. This can be used to perform
7572 denial of service against any system which verifies signedData messages using
7574 This issue was reported to OpenSSL by Johannes Bauer.
7579 * Race condition handling NewSessionTicket
7581 If a NewSessionTicket is received by a multi-threaded client when attempting to
7582 reuse a previous ticket then a race condition can occur potentially leading to
7583 a double free of the ticket data.
7588 ### Changes between 1.0.0q and 1.0.0r [19 Mar 2015]
7590 * Segmentation fault in ASN1_TYPE_cmp fix
7592 The function ASN1_TYPE_cmp will crash with an invalid read if an attempt is
7593 made to compare ASN.1 boolean types. Since ASN1_TYPE_cmp is used to check
7594 certificate signature algorithm consistency this can be used to crash any
7595 certificate verification operation and exploited in a DoS attack. Any
7596 application which performs certificate verification is vulnerable including
7597 OpenSSL clients and servers which enable client authentication.
7602 * ASN.1 structure reuse memory corruption fix
7604 Reusing a structure in ASN.1 parsing may allow an attacker to cause
7605 memory corruption via an invalid write. Such reuse is and has been
7606 strongly discouraged and is believed to be rare.
7608 Applications that parse structures containing CHOICE or ANY DEFINED BY
7609 components may be affected. Certificate parsing (d2i_X509 and related
7610 functions) are however not affected. OpenSSL clients and servers are
7616 * PKCS7 NULL pointer dereferences fix
7618 The PKCS#7 parsing code does not handle missing outer ContentInfo
7619 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs with
7620 missing content and trigger a NULL pointer dereference on parsing.
7622 Applications that verify PKCS#7 signatures, decrypt PKCS#7 data or
7623 otherwise parse PKCS#7 structures from untrusted sources are
7624 affected. OpenSSL clients and servers are not affected.
7626 This issue was reported to OpenSSL by Michal Zalewski (Google).
7631 * DoS via reachable assert in SSLv2 servers fix
7633 A malicious client can trigger an OPENSSL_assert (i.e., an abort) in
7634 servers that both support SSLv2 and enable export cipher suites by sending
7635 a specially crafted SSLv2 CLIENT-MASTER-KEY message.
7637 This issue was discovered by Sean Burford (Google) and Emilia Käsper
7638 (OpenSSL development team).
7643 * Use After Free following d2i_ECPrivatekey error fix
7645 A malformed EC private key file consumed via the d2i_ECPrivateKey function
7646 could cause a use after free condition. This, in turn, could cause a double
7647 free in several private key parsing functions (such as d2i_PrivateKey
7648 or EVP_PKCS82PKEY) and could lead to a DoS attack or memory corruption
7649 for applications that receive EC private keys from untrusted
7650 sources. This scenario is considered rare.
7652 This issue was discovered by the BoringSSL project and fixed in their
7658 * X509_to_X509_REQ NULL pointer deref fix
7660 The function X509_to_X509_REQ will crash with a NULL pointer dereference if
7661 the certificate key is invalid. This function is rarely used in practice.
7663 This issue was discovered by Brian Carpenter.
7668 * Removed the export ciphers from the DEFAULT ciphers
7672 ### Changes between 1.0.0p and 1.0.0q [15 Jan 2015]
7674 * Build fixes for the Windows and OpenVMS platforms
7676 *Matt Caswell and Richard Levitte*
7678 ### Changes between 1.0.0o and 1.0.0p [8 Jan 2015]
7680 * Fix DTLS segmentation fault in dtls1_get_record. A carefully crafted DTLS
7681 message can cause a segmentation fault in OpenSSL due to a NULL pointer
7682 dereference. This could lead to a Denial Of Service attack. Thanks to
7683 Markus Stenberg of Cisco Systems, Inc. for reporting this issue.
7688 * Fix DTLS memory leak in dtls1_buffer_record. A memory leak can occur in the
7689 dtls1_buffer_record function under certain conditions. In particular this
7690 could occur if an attacker sent repeated DTLS records with the same
7691 sequence number but for the next epoch. The memory leak could be exploited
7692 by an attacker in a Denial of Service attack through memory exhaustion.
7693 Thanks to Chris Mueller for reporting this issue.
7698 * Fix issue where no-ssl3 configuration sets method to NULL. When openssl is
7699 built with the no-ssl3 option and a SSL v3 ClientHello is received the ssl
7700 method would be set to NULL which could later result in a NULL pointer
7701 dereference. Thanks to Frank Schmirler for reporting this issue.
7706 * Abort handshake if server key exchange message is omitted for ephemeral
7709 Thanks to Karthikeyan Bhargavan of the PROSECCO team at INRIA for
7710 reporting this issue.
7715 * Remove non-export ephemeral RSA code on client and server. This code
7716 violated the TLS standard by allowing the use of temporary RSA keys in
7717 non-export ciphersuites and could be used by a server to effectively
7718 downgrade the RSA key length used to a value smaller than the server
7719 certificate. Thanks for Karthikeyan Bhargavan of the PROSECCO team at
7720 INRIA or reporting this issue.
7725 * Fixed issue where DH client certificates are accepted without verification.
7726 An OpenSSL server will accept a DH certificate for client authentication
7727 without the certificate verify message. This effectively allows a client to
7728 authenticate without the use of a private key. This only affects servers
7729 which trust a client certificate authority which issues certificates
7730 containing DH keys: these are extremely rare and hardly ever encountered.
7731 Thanks for Karthikeyan Bhargavan of the PROSECCO team at INRIA or reporting
7737 * Correct Bignum squaring. Bignum squaring (BN_sqr) may produce incorrect
7738 results on some platforms, including x86_64. This bug occurs at random
7739 with a very low probability, and is not known to be exploitable in any
7740 way, though its exact impact is difficult to determine. Thanks to Pieter
7741 Wuille (Blockstream) who reported this issue and also suggested an initial
7742 fix. Further analysis was conducted by the OpenSSL development team and
7743 Adam Langley of Google. The final fix was developed by Andy Polyakov of
7744 the OpenSSL core team.
7749 * Fix various certificate fingerprint issues.
7751 By using non-DER or invalid encodings outside the signed portion of a
7752 certificate the fingerprint can be changed without breaking the signature.
7753 Although no details of the signed portion of the certificate can be changed
7754 this can cause problems with some applications: e.g. those using the
7755 certificate fingerprint for blacklists.
7757 1. Reject signatures with non zero unused bits.
7759 If the BIT STRING containing the signature has non zero unused bits reject
7760 the signature. All current signature algorithms require zero unused bits.
7762 2. Check certificate algorithm consistency.
7764 Check the AlgorithmIdentifier inside TBS matches the one in the
7765 certificate signature. NB: this will result in signature failure
7766 errors for some broken certificates.
7768 Thanks to Konrad Kraszewski from Google for reporting this issue.
7770 3. Check DSA/ECDSA signatures use DER.
7772 Reencode DSA/ECDSA signatures and compare with the original received
7773 signature. Return an error if there is a mismatch.
7775 This will reject various cases including garbage after signature
7776 (thanks to Antti Karjalainen and Tuomo Untinen from the Codenomicon CROSS
7777 program for discovering this case) and use of BER or invalid ASN.1 INTEGERs
7778 (negative or with leading zeroes).
7780 Further analysis was conducted and fixes were developed by Stephen Henson
7781 of the OpenSSL core team.
7787 ### Changes between 1.0.0n and 1.0.0o [15 Oct 2014]
7789 * Session Ticket Memory Leak.
7791 When an OpenSSL SSL/TLS/DTLS server receives a session ticket the
7792 integrity of that ticket is first verified. In the event of a session
7793 ticket integrity check failing, OpenSSL will fail to free memory
7794 causing a memory leak. By sending a large number of invalid session
7795 tickets an attacker could exploit this issue in a Denial Of Service
7801 * Build option no-ssl3 is incomplete.
7803 When OpenSSL is configured with "no-ssl3" as a build option, servers
7804 could accept and complete a SSL 3.0 handshake, and clients could be
7805 configured to send them.
7808 *Akamai and the OpenSSL team*
7810 * Add support for TLS_FALLBACK_SCSV.
7811 Client applications doing fallback retries should call
7812 SSL_set_mode(s, SSL_MODE_SEND_FALLBACK_SCSV).
7815 *Adam Langley, Bodo Moeller*
7817 * Add additional DigestInfo checks.
7819 Reencode DigestInto in DER and check against the original when
7820 verifying RSA signature: this will reject any improperly encoded
7821 DigestInfo structures.
7823 Note: this is a precautionary measure and no attacks are currently known.
7827 ### Changes between 1.0.0m and 1.0.0n [6 Aug 2014]
7829 * OpenSSL DTLS clients enabling anonymous (EC)DH ciphersuites are subject
7830 to a denial of service attack. A malicious server can crash the client
7831 with a null pointer dereference (read) by specifying an anonymous (EC)DH
7832 ciphersuite and sending carefully crafted handshake messages.
7834 Thanks to Felix Gröbert (Google) for discovering and researching this
7840 * By sending carefully crafted DTLS packets an attacker could cause openssl
7841 to leak memory. This can be exploited through a Denial of Service attack.
7842 Thanks to Adam Langley for discovering and researching this issue.
7847 * An attacker can force openssl to consume large amounts of memory whilst
7848 processing DTLS handshake messages. This can be exploited through a
7849 Denial of Service attack.
7850 Thanks to Adam Langley for discovering and researching this issue.
7855 * An attacker can force an error condition which causes openssl to crash
7856 whilst processing DTLS packets due to memory being freed twice. This
7857 can be exploited through a Denial of Service attack.
7858 Thanks to Adam Langley and Wan-Teh Chang for discovering and researching
7864 * If a multithreaded client connects to a malicious server using a resumed
7865 session and the server sends an ec point format extension it could write
7866 up to 255 bytes to freed memory.
7868 Thanks to Gabor Tyukasz (LogMeIn Inc) for discovering and researching this
7874 * A flaw in OBJ_obj2txt may cause pretty printing functions such as
7875 X509_name_oneline, X509_name_print_ex et al. to leak some information
7876 from the stack. Applications may be affected if they echo pretty printing
7877 output to the attacker.
7879 Thanks to Ivan Fratric (Google) for discovering this issue.
7882 *Emilia Käsper, and Steve Henson*
7884 * Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
7885 for corner cases. (Certain input points at infinity could lead to
7886 bogus results, with non-infinity inputs mapped to infinity too.)
7890 ### Changes between 1.0.0l and 1.0.0m [5 Jun 2014]
7892 * Fix for SSL/TLS MITM flaw. An attacker using a carefully crafted
7893 handshake can force the use of weak keying material in OpenSSL
7894 SSL/TLS clients and servers.
7896 Thanks to KIKUCHI Masashi (Lepidum Co. Ltd.) for discovering and
7897 researching this issue. ([CVE-2014-0224])
7899 *KIKUCHI Masashi, Steve Henson*
7901 * Fix DTLS recursion flaw. By sending an invalid DTLS handshake to an
7902 OpenSSL DTLS client the code can be made to recurse eventually crashing
7905 Thanks to Imre Rad (Search-Lab Ltd.) for discovering this issue.
7908 *Imre Rad, Steve Henson*
7910 * Fix DTLS invalid fragment vulnerability. A buffer overrun attack can
7911 be triggered by sending invalid DTLS fragments to an OpenSSL DTLS
7912 client or server. This is potentially exploitable to run arbitrary
7913 code on a vulnerable client or server.
7915 Thanks to Jüri Aedla for reporting this issue. ([CVE-2014-0195])
7917 *Jüri Aedla, Steve Henson*
7919 * Fix bug in TLS code where clients enable anonymous ECDH ciphersuites
7920 are subject to a denial of service attack.
7922 Thanks to Felix Gröbert and Ivan Fratric at Google for discovering
7923 this issue. ([CVE-2014-3470])
7925 *Felix Gröbert, Ivan Fratric, Steve Henson*
7927 * Harmonize version and its documentation. -f flag is used to display
7930 *mancha <mancha1@zoho.com>*
7932 * Fix eckey_priv_encode so it immediately returns an error upon a failure
7933 in i2d_ECPrivateKey.
7935 *mancha <mancha1@zoho.com>*
7937 * Fix some double frees. These are not thought to be exploitable.
7939 *mancha <mancha1@zoho.com>*
7941 * Fix for the attack described in the paper "Recovering OpenSSL
7942 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
7943 by Yuval Yarom and Naomi Benger. Details can be obtained from:
7944 <http://eprint.iacr.org/2014/140>
7946 Thanks to Yuval Yarom and Naomi Benger for discovering this
7947 flaw and to Yuval Yarom for supplying a fix ([CVE-2014-0076])
7949 *Yuval Yarom and Naomi Benger*
7951 ### Changes between 1.0.0k and 1.0.0l [6 Jan 2014]
7953 * Keep original DTLS digest and encryption contexts in retransmission
7954 structures so we can use the previous session parameters if they need
7955 to be resent. ([CVE-2013-6450])
7959 * Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which
7960 avoids preferring ECDHE-ECDSA ciphers when the client appears to be
7961 Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for
7962 several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug
7963 is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing
7964 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer.
7966 *Rob Stradling, Adam Langley*
7968 ### Changes between 1.0.0j and 1.0.0k [5 Feb 2013]
7970 * Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
7972 This addresses the flaw in CBC record processing discovered by
7973 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
7974 at: <http://www.isg.rhul.ac.uk/tls/>
7976 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
7977 Security Group at Royal Holloway, University of London
7978 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
7979 Emilia Käsper for the initial patch.
7982 *Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson*
7984 * Return an error when checking OCSP signatures when key is NULL.
7985 This fixes a DoS attack. ([CVE-2013-0166])
7989 * Call OCSP Stapling callback after ciphersuite has been chosen, so
7990 the right response is stapled. Also change SSL_get_certificate()
7991 so it returns the certificate actually sent.
7992 See <http://rt.openssl.org/Ticket/Display.html?id=2836>.
7993 (This is a backport)
7995 *Rob Stradling <rob.stradling@comodo.com>*
7997 * Fix possible deadlock when decoding public keys.
8001 ### Changes between 1.0.0i and 1.0.0j [10 May 2012]
8003 [NB: OpenSSL 1.0.0i and later 1.0.0 patch levels were released after
8006 * Sanity check record length before skipping explicit IV in DTLS
8009 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
8010 fuzzing as a service testing platform.
8015 * Initialise tkeylen properly when encrypting CMS messages.
8016 Thanks to Solar Designer of Openwall for reporting this issue.
8020 ### Changes between 1.0.0h and 1.0.0i [19 Apr 2012]
8022 * Check for potentially exploitable overflows in asn1_d2i_read_bio
8023 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
8024 in CRYPTO_realloc_clean.
8026 Thanks to Tavis Ormandy, Google Security Team, for discovering this
8027 issue and to Adam Langley <agl@chromium.org> for fixing it.
8030 *Adam Langley (Google), Tavis Ormandy, Google Security Team*
8032 ### Changes between 1.0.0g and 1.0.0h [12 Mar 2012]
8034 * Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
8035 in CMS and PKCS7 code. When RSA decryption fails use a random key for
8036 content decryption and always return the same error. Note: this attack
8037 needs on average 2^20 messages so it only affects automated senders. The
8038 old behaviour can be re-enabled in the CMS code by setting the
8039 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
8040 an MMA defence is not necessary.
8041 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
8042 this issue. ([CVE-2012-0884])
8046 * Fix CVE-2011-4619: make sure we really are receiving a
8047 client hello before rejecting multiple SGC restarts. Thanks to
8048 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
8052 ### Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
8054 * Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
8055 Thanks to Antonio Martin, Enterprise Secure Access Research and
8056 Development, Cisco Systems, Inc. for discovering this bug and
8057 preparing a fix. ([CVE-2012-0050])
8061 ### Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
8063 * Nadhem Alfardan and Kenny Paterson have discovered an extension
8064 of the Vaudenay padding oracle attack on CBC mode encryption
8065 which enables an efficient plaintext recovery attack against
8066 the OpenSSL implementation of DTLS. Their attack exploits timing
8067 differences arising during decryption processing. A research
8068 paper describing this attack can be found at:
8069 <http://www.isg.rhul.ac.uk/~kp/dtls.pdf>
8070 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
8071 Security Group at Royal Holloway, University of London
8072 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
8073 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
8074 for preparing the fix. ([CVE-2011-4108])
8076 *Robin Seggelmann, Michael Tuexen*
8078 * Clear bytes used for block padding of SSL 3.0 records.
8081 *Adam Langley (Google)*
8083 * Only allow one SGC handshake restart for SSL/TLS. Thanks to George
8084 Kadianakis <desnacked@gmail.com> for discovering this issue and
8085 Adam Langley for preparing the fix. ([CVE-2011-4619])
8087 *Adam Langley (Google)*
8089 * Check parameters are not NULL in GOST ENGINE. ([CVE-2012-0027])
8091 *Andrey Kulikov <amdeich@gmail.com>*
8093 * Prevent malformed RFC3779 data triggering an assertion failure.
8094 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
8095 and Rob Austein <sra@hactrn.net> for fixing it. ([CVE-2011-4577])
8097 *Rob Austein <sra@hactrn.net>*
8099 * Improved PRNG seeding for VOS.
8101 *Paul Green <Paul.Green@stratus.com>*
8103 * Fix ssl_ciph.c set-up race.
8105 *Adam Langley (Google)*
8107 * Fix spurious failures in ecdsatest.c.
8109 *Emilia Käsper (Google)*
8111 * Fix the BIO_f_buffer() implementation (which was mixing different
8112 interpretations of the `..._len` fields).
8114 *Adam Langley (Google)*
8116 * Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
8117 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
8118 threads won't reuse the same blinding coefficients.
8120 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
8121 lock to call BN_BLINDING_invert_ex, and avoids one use of
8122 BN_BLINDING_update for each BN_BLINDING structure (previously,
8123 the last update always remained unused).
8125 *Emilia Käsper (Google)*
8127 * In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
8129 *Bob Buckholz (Google)*
8131 ### Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
8133 * Fix bug where CRLs with nextUpdate in the past are sometimes accepted
8134 by initialising X509_STORE_CTX properly. ([CVE-2011-3207])
8136 *Kaspar Brand <ossl@velox.ch>*
8138 * Fix SSL memory handling for (EC)DH ciphersuites, in particular
8139 for multi-threaded use of ECDH. ([CVE-2011-3210])
8141 *Adam Langley (Google)*
8143 * Fix x509_name_ex_d2i memory leak on bad inputs.
8147 * Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
8148 signature public key algorithm by using OID xref utilities instead.
8149 Before this you could only use some ECC ciphersuites with SHA1 only.
8153 * Add protection against ECDSA timing attacks as mentioned in the paper
8154 by Billy Bob Brumley and Nicola Tuveri, see:
8155 <http://eprint.iacr.org/2011/232.pdf>
8157 *Billy Bob Brumley and Nicola Tuveri*
8159 ### Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
8161 * Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
8163 *Neel Mehta, Adam Langley, Bodo Moeller (Google)*
8165 * Fix bug in string printing code: if *any* escaping is enabled we must
8166 escape the escape character (backslash) or the resulting string is
8171 ### Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
8173 * Disable code workaround for ancient and obsolete Netscape browsers
8174 and servers: an attacker can use it in a ciphersuite downgrade attack.
8175 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
8179 * Fixed J-PAKE implementation error, originally discovered by
8180 Sebastien Martini, further info and confirmation from Stefan
8181 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
8185 ### Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
8187 * Fix extension code to avoid race conditions which can result in a buffer
8188 overrun vulnerability: resumed sessions must not be modified as they can
8189 be shared by multiple threads. CVE-2010-3864
8193 * Fix WIN32 build system to correctly link an ENGINE directory into
8198 ### Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
8200 * Check return value of int_rsa_verify in pkey_rsa_verifyrecover
8203 *Steve Henson, Peter-Michael Hager <hager@dortmund.net>*
8205 ### Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
8207 * Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
8208 context. The operation can be customised via the ctrl mechanism in
8209 case ENGINEs want to include additional functionality.
8213 * Tolerate yet another broken PKCS#8 key format: private key value negative.
8217 * Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
8218 output hashes compatible with older versions of OpenSSL.
8220 *Willy Weisz <weisz@vcpc.univie.ac.at>*
8222 * Fix compression algorithm handling: if resuming a session use the
8223 compression algorithm of the resumed session instead of determining
8224 it from client hello again. Don't allow server to change algorithm.
8228 * Add load_crls() function to commands tidying load_certs() too. Add option
8229 to verify utility to allow additional CRLs to be included.
8233 * Update OCSP request code to permit adding custom headers to the request:
8234 some responders need this.
8238 * The function EVP_PKEY_sign() returns <=0 on error: check return code
8241 *Julia Lawall <julia@diku.dk>*
8243 * Update verify callback code in `apps/s_cb.c` and `apps/verify.c`, it
8244 needlessly dereferenced structures, used obsolete functions and
8245 didn't handle all updated verify codes correctly.
8249 * Disable MD2 in the default configuration.
8253 * In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
8254 indicate the initial BIO being pushed or popped. This makes it possible
8255 to determine whether the BIO is the one explicitly called or as a result
8256 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
8257 it handles reference counts correctly and doesn't zero out the I/O bio
8258 when it is not being explicitly popped. WARNING: applications which
8259 included workarounds for the old buggy behaviour will need to be modified
8260 or they could free up already freed BIOs.
8264 * Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
8265 renaming to all platforms (within the 0.9.8 branch, this was
8266 done conditionally on Netware platforms to avoid a name clash).
8268 *Guenter <lists@gknw.net>*
8270 * Add ECDHE and PSK support to DTLS.
8272 *Michael Tuexen <tuexen@fh-muenster.de>*
8274 * Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
8279 * Add "missing" function EVP_MD_flags() (without this the only way to
8280 retrieve a digest flags is by accessing the structure directly. Update
8281 `EVP_MD_do_all*()` and `EVP_CIPHER_do_all*()` to include the name a digest
8282 or cipher is registered as in the "from" argument. Print out all
8283 registered digests in the dgst usage message instead of manually
8284 attempting to work them out.
8288 * If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
8289 this allows the use of compression and extensions. Change default cipher
8290 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
8291 by default unless an application cipher string requests it.
8295 * Alter match criteria in PKCS12_parse(). It used to try to use local
8296 key ids to find matching certificates and keys but some PKCS#12 files
8297 don't follow the (somewhat unwritten) rules and this strategy fails.
8298 Now just gather all certificates together and the first private key
8299 then look for the first certificate that matches the key.
8303 * Support use of registered digest and cipher names for dgst and cipher
8304 commands instead of having to add each one as a special case. So now
8311 openssl dgst -sha256 foo
8313 and this works for ENGINE based algorithms too.
8317 * Update Gost ENGINE to support parameter files.
8319 *Victor B. Wagner <vitus@cryptocom.ru>*
8321 * Support GeneralizedTime in ca utility.
8323 *Oliver Martin <oliver@volatilevoid.net>, Steve Henson*
8325 * Enhance the hash format used for certificate directory links. The new
8326 form uses the canonical encoding (meaning equivalent names will work
8327 even if they aren't identical) and uses SHA1 instead of MD5. This form
8328 is incompatible with the older format and as a result c_rehash should
8329 be used to rebuild symbolic links.
8333 * Make PKCS#8 the default write format for private keys, replacing the
8334 traditional format. This form is standardised, more secure and doesn't
8335 include an implicit MD5 dependency.
8339 * Add a $gcc_devteam_warn option to Configure. The idea is that any code
8340 committed to OpenSSL should pass this lot as a minimum.
8344 * Add session ticket override functionality for use by EAP-FAST.
8346 *Jouni Malinen <j@w1.fi>*
8348 * Modify HMAC functions to return a value. Since these can be implemented
8349 in an ENGINE errors can occur.
8353 * Type-checked OBJ_bsearch_ex.
8357 * Type-checked OBJ_bsearch. Also some constification necessitated
8358 by type-checking. Still to come: TXT_DB, bsearch(?),
8359 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
8364 * New function OPENSSL_gmtime_adj() to add a specific number of days and
8365 seconds to a tm structure directly, instead of going through OS
8366 specific date routines. This avoids any issues with OS routines such
8367 as the year 2038 bug. New `*_adj()` functions for ASN1 time structures
8368 and X509_time_adj_ex() to cover the extended range. The existing
8369 X509_time_adj() is still usable and will no longer have any date issues.
8373 * Delta CRL support. New use deltas option which will attempt to locate
8374 and search any appropriate delta CRLs available.
8376 This work was sponsored by Google.
8380 * Support for CRLs partitioned by reason code. Reorganise CRL processing
8381 code and add additional score elements. Validate alternate CRL paths
8382 as part of the CRL checking and indicate a new error "CRL path validation
8383 error" in this case. Applications wanting additional details can use
8384 the verify callback and check the new "parent" field. If this is not
8385 NULL CRL path validation is taking place. Existing applications won't
8386 see this because it requires extended CRL support which is off by
8389 This work was sponsored by Google.
8393 * Support for freshest CRL extension.
8395 This work was sponsored by Google.
8399 * Initial indirect CRL support. Currently only supported in the CRLs
8400 passed directly and not via lookup. Process certificate issuer
8401 CRL entry extension and lookup CRL entries by bother issuer name
8402 and serial number. Check and process CRL issuer entry in IDP extension.
8404 This work was sponsored by Google.
8408 * Add support for distinct certificate and CRL paths. The CRL issuer
8409 certificate is validated separately in this case. Only enabled if
8410 an extended CRL support flag is set: this flag will enable additional
8411 CRL functionality in future.
8413 This work was sponsored by Google.
8417 * Add support for policy mappings extension.
8419 This work was sponsored by Google.
8423 * Fixes to pathlength constraint, self issued certificate handling,
8424 policy processing to align with RFC3280 and PKITS tests.
8426 This work was sponsored by Google.
8430 * Support for name constraints certificate extension. DN, email, DNS
8431 and URI types are currently supported.
8433 This work was sponsored by Google.
8437 * To cater for systems that provide a pointer-based thread ID rather
8438 than numeric, deprecate the current numeric thread ID mechanism and
8439 replace it with a structure and associated callback type. This
8440 mechanism allows a numeric "hash" to be extracted from a thread ID in
8441 either case, and on platforms where pointers are larger than 'long',
8442 mixing is done to help ensure the numeric 'hash' is usable even if it
8443 can't be guaranteed unique. The default mechanism is to use "&errno"
8444 as a pointer-based thread ID to distinguish between threads.
8446 Applications that want to provide their own thread IDs should now use
8447 CRYPTO_THREADID_set_callback() to register a callback that will call
8448 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
8450 Note that ERR_remove_state() is now deprecated, because it is tied
8451 to the assumption that thread IDs are numeric. ERR_remove_state(0)
8452 to free the current thread's error state should be replaced by
8453 ERR_remove_thread_state(NULL).
8455 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
8456 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
8457 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
8458 application was previously providing a numeric thread callback that
8459 was inappropriate for distinguishing threads, then uniqueness might
8460 have been obtained with &errno that happened immediately in the
8461 intermediate development versions of OpenSSL; this is no longer the
8462 case, the numeric thread callback will now override the automatic use
8465 *Geoff Thorpe, with help from Bodo Moeller*
8467 * Initial support for different CRL issuing certificates. This covers a
8468 simple case where the self issued certificates in the chain exist and
8469 the real CRL issuer is higher in the existing chain.
8471 This work was sponsored by Google.
8475 * Removed effectively defunct crypto/store from the build.
8479 * Revamp of STACK to provide stronger type-checking. Still to come:
8480 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
8481 ASN1_STRING, CONF_VALUE.
8485 * Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
8486 RAM on SSL connections. This option can save about 34k per idle SSL.
8490 * Revamp of LHASH to provide stronger type-checking. Still to come:
8491 STACK, TXT_DB, bsearch, qsort.
8495 * Initial support for Cryptographic Message Syntax (aka CMS) based
8496 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
8497 support for data, signedData, compressedData, digestedData and
8498 encryptedData, envelopedData types included. Scripts to check against
8499 RFC4134 examples draft and interop and consistency checks of many
8500 content types and variants.
8504 * Add options to enc utility to support use of zlib compression BIO.
8508 * Extend mk1mf to support importing of options and assembly language
8509 files from Configure script, currently only included in VC-WIN32.
8510 The assembly language rules can now optionally generate the source
8511 files from the associated perl scripts.
8515 * Implement remaining functionality needed to support GOST ciphersuites.
8516 Interop testing has been performed using CryptoPro implementations.
8518 *Victor B. Wagner <vitus@cryptocom.ru>*
8520 * s390x assembler pack.
8524 * ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
8529 * Implement Opaque PRF Input TLS extension as specified in
8530 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
8531 official specification yet and no extension type assignment by
8532 IANA exists, this extension (for now) will have to be explicitly
8533 enabled when building OpenSSL by providing the extension number
8534 to use. For example, specify an option
8536 -DTLSEXT_TYPE_opaque_prf_input=0x9527
8538 to the "config" or "Configure" script to enable the extension,
8539 assuming extension number 0x9527 (which is a completely arbitrary
8540 and unofficial assignment based on the MD5 hash of the Internet
8541 Draft). Note that by doing so, you potentially lose
8542 interoperability with other TLS implementations since these might
8543 be using the same extension number for other purposes.
8545 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
8546 opaque PRF input value to use in the handshake. This will create
8547 an internal copy of the length-'len' string at 'src', and will
8548 return non-zero for success.
8550 To get more control and flexibility, provide a callback function
8553 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
8554 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
8558 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
8561 Callback function 'cb' will be called in handshakes, and is
8562 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
8563 Argument 'arg' is for application purposes (the value as given to
8564 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
8565 be provided to the callback function). The callback function
8566 has to return non-zero to report success: usually 1 to use opaque
8567 PRF input just if possible, or 2 to enforce use of the opaque PRF
8568 input. In the latter case, the library will abort the handshake
8569 if opaque PRF input is not successfully negotiated.
8571 Arguments 'peerinput' and 'len' given to the callback function
8572 will always be NULL and 0 in the case of a client. A server will
8573 see the client's opaque PRF input through these variables if
8574 available (NULL and 0 otherwise). Note that if the server
8575 provides an opaque PRF input, the length must be the same as the
8576 length of the client's opaque PRF input.
8578 Note that the callback function will only be called when creating
8579 a new session (session resumption can resume whatever was
8580 previously negotiated), and will not be called in SSL 2.0
8581 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
8582 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
8583 for applications that need to enforce opaque PRF input.
8587 * Update ssl code to support digests other than SHA1+MD5 for handshake
8590 *Victor B. Wagner <vitus@cryptocom.ru>*
8592 * Add RFC4507 support to OpenSSL. This includes the corrections in
8593 RFC4507bis. The encrypted ticket format is an encrypted encoded
8594 SSL_SESSION structure, that way new session features are automatically
8597 If a client application caches session in an SSL_SESSION structure
8598 support is transparent because tickets are now stored in the encoded
8601 The SSL_CTX structure automatically generates keys for ticket
8602 protection in servers so again support should be possible
8603 with no application modification.
8605 If a client or server wishes to disable RFC4507 support then the option
8606 SSL_OP_NO_TICKET can be set.
8608 Add a TLS extension debugging callback to allow the contents of any client
8609 or server extensions to be examined.
8611 This work was sponsored by Google.
8615 * Final changes to avoid use of pointer pointer casts in OpenSSL.
8616 OpenSSL should now compile cleanly on gcc 4.2
8618 *Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson*
8620 * Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
8621 support including streaming MAC support: this is required for GOST
8622 ciphersuite support.
8624 *Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson*
8626 * Add option -stream to use PKCS#7 streaming in smime utility. New
8627 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
8628 to output in BER and PEM format.
8632 * Experimental support for use of HMAC via EVP_PKEY interface. This
8633 allows HMAC to be handled via the `EVP_DigestSign*()` interface. The
8634 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
8635 ENGINE support for HMAC keys which are unextractable. New -mac and
8636 -macopt options to dgst utility.
8640 * New option -sigopt to dgst utility. Update dgst to use
8641 `EVP_Digest{Sign,Verify}*`. These two changes make it possible to use
8642 alternative signing parameters such as X9.31 or PSS in the dgst
8647 * Change ssl_cipher_apply_rule(), the internal function that does
8648 the work each time a ciphersuite string requests enabling
8649 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
8650 removing ("!foo+bar") a class of ciphersuites: Now it maintains
8651 the order of disabled ciphersuites such that those ciphersuites
8652 that most recently went from enabled to disabled not only stay
8653 in order with respect to each other, but also have higher priority
8654 than other disabled ciphersuites the next time ciphersuites are
8657 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
8658 the same ciphersuites as with "HIGH" alone, but in a specific
8659 order where the PSK ciphersuites come first (since they are the
8660 most recently disabled ciphersuites when "HIGH" is parsed).
8662 Also, change ssl_create_cipher_list() (using this new
8663 functionality) such that between otherwise identical
8664 ciphersuites, ephemeral ECDH is preferred over ephemeral DH in
8669 * Change ssl_create_cipher_list() so that it automatically
8670 arranges the ciphersuites in reasonable order before starting
8671 to process the rule string. Thus, the definition for "DEFAULT"
8672 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
8673 remains equivalent to `"AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH"`.
8674 This makes it much easier to arrive at a reasonable default order
8675 in applications for which anonymous ciphers are OK (meaning
8676 that you can't actually use DEFAULT).
8678 *Bodo Moeller; suggested by Victor Duchovni*
8680 * Split the SSL/TLS algorithm mask (as used for ciphersuite string
8681 processing) into multiple integers instead of setting
8682 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
8683 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
8684 (These masks as well as the individual bit definitions are hidden
8685 away into the non-exported interface ssl/ssl_locl.h, so this
8686 change to the definition of the SSL_CIPHER structure shouldn't
8687 affect applications.) This give us more bits for each of these
8688 categories, so there is no longer a need to coagulate AES128 and
8689 AES256 into a single algorithm bit, and to coagulate Camellia128
8690 and Camellia256 into a single algorithm bit, which has led to all
8693 Thus, among other things, the kludge introduced in 0.9.7m and
8694 0.9.8e for masking out AES256 independently of AES128 or masking
8695 out Camellia256 independently of AES256 is not needed here in 0.9.9.
8697 With the change, we also introduce new ciphersuite aliases that
8698 so far were missing: "AES128", "AES256", "CAMELLIA128", and
8703 * Add support for dsa-with-SHA224 and dsa-with-SHA256.
8704 Use the leftmost N bytes of the signature input if the input is
8705 larger than the prime q (with N being the size in bytes of q).
8709 * Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
8710 it yet and it is largely untested.
8714 * Add support for the ecdsa-with-SHA224/256/384/512 signature types.
8718 * Initial incomplete changes to avoid need for function casts in OpenSSL
8719 some compilers (gcc 4.2 and later) reject their use. Safestack is
8720 reimplemented. Update ASN1 to avoid use of legacy functions.
8724 * Win32/64 targets are linked with Winsock2.
8728 * Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
8729 to external functions. This can be used to increase CRL handling
8730 efficiency especially when CRLs are very large by (for example) storing
8731 the CRL revoked certificates in a database.
8735 * Overhaul of by_dir code. Add support for dynamic loading of CRLs so
8736 new CRLs added to a directory can be used. New command line option
8737 -verify_return_error to s_client and s_server. This causes real errors
8738 to be returned by the verify callback instead of carrying on no matter
8739 what. This reflects the way a "real world" verify callback would behave.
8743 * GOST engine, supporting several GOST algorithms and public key formats.
8744 Kindly donated by Cryptocom.
8748 * Partial support for Issuing Distribution Point CRL extension. CRLs
8749 partitioned by DP are handled but no indirect CRL or reason partitioning
8750 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
8751 selected via a scoring technique which handles IDP and AKID in CRLs.
8755 * New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
8756 will ultimately be used for all verify operations: this will remove the
8757 X509_STORE dependency on certificate verification and allow alternative
8758 lookup methods. X509_STORE based implementations of these two callbacks.
8762 * Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
8763 Modify get_crl() to find a valid (unexpired) CRL if possible.
8767 * New function X509_CRL_match() to check if two CRLs are identical. Normally
8768 this would be called X509_CRL_cmp() but that name is already used by
8769 a function that just compares CRL issuer names. Cache several CRL
8770 extensions in X509_CRL structure and cache CRLDP in X509.
8774 * Store a "canonical" representation of X509_NAME structure (ASN1 Name)
8775 this maps equivalent X509_NAME structures into a consistent structure.
8776 Name comparison can then be performed rapidly using memcmp().
8780 * Non-blocking OCSP request processing. Add -timeout option to ocsp
8785 * Allow digests to supply their own micalg string for S/MIME type using
8786 the ctrl EVP_MD_CTRL_MICALG.
8790 * During PKCS7 signing pass the PKCS7 SignerInfo structure to the
8791 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
8792 ctrl. It can then customise the structure before and/or after signing
8797 * New function OBJ_add_sigid() to allow application defined signature OIDs
8798 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
8799 to free up any added signature OIDs.
8803 * New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
8804 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
8805 digest and cipher tables. New options added to openssl utility:
8806 list-message-digest-algorithms and list-cipher-algorithms.
8810 * Change the array representation of binary polynomials: the list
8811 of degrees of non-zero coefficients is now terminated with -1.
8812 Previously it was terminated with 0, which was also part of the
8813 value; thus, the array representation was not applicable to
8814 polynomials where t^0 has coefficient zero. This change makes
8815 the array representation useful in a more general context.
8819 * Various modifications and fixes to SSL/TLS cipher string
8820 handling. For ECC, the code now distinguishes between fixed ECDH
8821 with RSA certificates on the one hand and with ECDSA certificates
8822 on the other hand, since these are separate ciphersuites. The
8823 unused code for Fortezza ciphersuites has been removed.
8825 For consistency with EDH, ephemeral ECDH is now called "EECDH"
8826 (not "ECDHE"). For consistency with the code for DH
8827 certificates, use of ECDH certificates is now considered ECDH
8828 authentication, not RSA or ECDSA authentication (the latter is
8829 merely the CA's signing algorithm and not actively used in the
8832 The temporary ciphersuite alias "ECCdraft" is no longer
8833 available, and ECC ciphersuites are no longer excluded from "ALL"
8834 and "DEFAULT". The following aliases now exist for RFC 4492
8835 ciphersuites, most of these by analogy with the DH case:
8837 kECDHr - ECDH cert, signed with RSA
8838 kECDHe - ECDH cert, signed with ECDSA
8839 kECDH - ECDH cert (signed with either RSA or ECDSA)
8840 kEECDH - ephemeral ECDH
8841 ECDH - ECDH cert or ephemeral ECDH
8847 AECDH - anonymous ECDH
8848 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
8852 * Add additional S/MIME capabilities for AES and GOST ciphers if supported.
8853 Use correct micalg parameters depending on digest(s) in signed message.
8857 * Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
8858 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
8862 * Initial engine support for EVP_PKEY_METHOD. New functions to permit
8863 an engine to register a method. Add ENGINE lookups for methods and
8864 functional reference processing.
8868 * New functions `EVP_Digest{Sign,Verify)*`. These are enhanced versions of
8869 `EVP_{Sign,Verify}*` which allow an application to customise the signature
8874 * New -resign option to smime utility. This adds one or more signers
8875 to an existing PKCS#7 signedData structure. Also -md option to use an
8876 alternative message digest algorithm for signing.
8880 * Tidy up PKCS#7 routines and add new functions to make it easier to
8881 create PKCS7 structures containing multiple signers. Update smime
8882 application to support multiple signers.
8886 * New -macalg option to pkcs12 utility to allow setting of an alternative
8891 * Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
8892 Reorganize PBE internals to lookup from a static table using NIDs,
8893 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
8894 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
8895 PRF which will be automatically used with PBES2.
8899 * Replace the algorithm specific calls to generate keys in "req" with the
8904 * Update PKCS#7 enveloped data routines to use new API. This is now
8905 supported by any public key method supporting the encrypt operation. A
8906 ctrl is added to allow the public key algorithm to examine or modify
8907 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
8912 * Add a ctrl to asn1 method to allow a public key algorithm to express
8913 a default digest type to use. In most cases this will be SHA1 but some
8914 algorithms (such as GOST) need to specify an alternative digest. The
8915 return value indicates how strong the preference is 1 means optional and
8916 2 is mandatory (that is it is the only supported type). Modify
8917 ASN1_item_sign() to accept a NULL digest argument to indicate it should
8918 use the default md. Update openssl utilities to use the default digest
8919 type for signing if it is not explicitly indicated.
8923 * Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
8924 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
8925 signing method from the key type. This effectively removes the link
8926 between digests and public key types.
8930 * Add an OID cross reference table and utility functions. Its purpose is to
8931 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
8932 rsaEncryption. This will allow some of the algorithm specific hackery
8933 needed to use the correct OID to be removed.
8937 * Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
8938 structures for PKCS7_sign(). They are now set up by the relevant public
8943 * Add provisional EC pkey method with support for ECDSA and ECDH.
8947 * Add support for key derivation (agreement) in the API, DH method and
8952 * Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
8953 public and private key formats. As a side effect these add additional
8954 command line functionality not previously available: DSA signatures can be
8955 generated and verified using pkeyutl and DH key support and generation in
8962 *Oliver Tappe <zooey@hirschkaefer.de>*
8964 * New make target "install_html_docs" installs HTML renditions of the
8967 *Oliver Tappe <zooey@hirschkaefer.de>*
8969 * New utility "genpkey" this is analogous to "genrsa" etc except it can
8970 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
8971 support key and parameter generation and add initial key generation
8972 functionality for RSA.
8976 * Add functions for main EVP_PKEY_method operations. The undocumented
8977 functions `EVP_PKEY_{encrypt,decrypt}` have been renamed to
8978 `EVP_PKEY_{encrypt,decrypt}_old`.
8982 * Initial definitions for EVP_PKEY_METHOD. This will be a high level public
8983 key API, doesn't do much yet.
8987 * New function EVP_PKEY_asn1_get0_info() to retrieve information about
8988 public key algorithms. New option to openssl utility:
8989 "list-public-key-algorithms" to print out info.
8993 * Implement the Supported Elliptic Curves Extension for
8994 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
8998 * Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
8999 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
9003 * New utilities pkey and pkeyparam. These are similar to algorithm specific
9004 utilities such as rsa, dsa, dsaparam etc except they process any key
9009 * Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
9010 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
9011 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
9016 * Initial support for pluggable public key ASN1.
9017 De-spaghettify the public key ASN1 handling. Move public and private
9018 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
9019 algorithm specific handling to a single module within the relevant
9020 algorithm directory. Add functions to allow (near) opaque processing
9021 of public and private key structures.
9025 * Implement the Supported Point Formats Extension for
9026 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
9030 * Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
9031 for the psk identity [hint] and the psk callback functions to the
9032 SSL_SESSION, SSL and SSL_CTX structure.
9035 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
9039 SSL_CTX_use_psk_identity_hint
9040 SSL_get_psk_identity_hint
9041 SSL_get_psk_identity
9042 SSL_use_psk_identity_hint
9044 *Mika Kousa and Pasi Eronen of Nokia Corporation*
9046 * Add RFC 3161 compliant time stamp request creation, response generation
9047 and response verification functionality.
9049 *Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project*
9051 * Add initial support for TLS extensions, specifically for the server_name
9052 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
9053 have new members for a host name. The SSL data structure has an
9054 additional member `SSL_CTX *initial_ctx` so that new sessions can be
9055 stored in that context to allow for session resumption, even after the
9056 SSL has been switched to a new SSL_CTX in reaction to a client's
9057 server_name extension.
9059 New functions (subject to change):
9061 SSL_get_servername()
9062 SSL_get_servername_type()
9065 New CTRL codes and macros (subject to change):
9067 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
9068 - SSL_CTX_set_tlsext_servername_callback()
9069 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
9070 - SSL_CTX_set_tlsext_servername_arg()
9071 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
9073 openssl s_client has a new '-servername ...' option.
9075 openssl s_server has new options '-servername_host ...', '-cert2 ...',
9076 '-key2 ...', '-servername_fatal' (subject to change). This allows
9077 testing the HostName extension for a specific single host name ('-cert'
9078 and '-key' remain fallbacks for handshakes without HostName
9079 negotiation). If the unrecognized_name alert has to be sent, this by
9080 default is a warning; it becomes fatal with the '-servername_fatal'
9083 *Peter Sylvester, Remy Allais, Christophe Renou*
9085 * Whirlpool hash implementation is added.
9089 * BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
9090 bn(64,32). Because of instruction set limitations it doesn't have
9091 any negative impact on performance. This was done mostly in order
9092 to make it possible to share assembler modules, such as bn_mul_mont
9093 implementations, between 32- and 64-bit builds without hassle.
9097 * Move code previously exiled into file crypto/ec/ec2_smpt.c
9098 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
9103 * New candidate for BIGNUM assembler implementation, bn_mul_mont,
9104 dedicated Montgomery multiplication procedure, is introduced.
9105 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
9106 "64-bit" performance on certain 32-bit targets.
9110 * New option SSL_OP_NO_COMP to disable use of compression selectively
9111 in SSL structures. New SSL ctrl to set maximum send fragment size.
9112 Save memory by setting the I/O buffer sizes dynamically instead of
9113 using the maximum available value.
9117 * New option -V for 'openssl ciphers'. This prints the ciphersuite code
9118 in addition to the text details.
9122 * Very, very preliminary EXPERIMENTAL support for printing of general
9123 ASN1 structures. This currently produces rather ugly output and doesn't
9124 handle several customised structures at all.
9128 * Integrated support for PVK file format and some related formats such
9129 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
9130 these in the 'rsa' and 'dsa' utilities.
9134 * Support for PKCS#1 RSAPublicKey format on rsa utility command line.
9138 * Remove the ancient ASN1_METHOD code. This was only ever used in one
9139 place for the (very old) "NETSCAPE" format certificates which are now
9140 handled using new ASN1 code equivalents.
9144 * Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
9145 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
9146 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
9150 * Modify CRL distribution points extension code to print out previously
9151 unsupported fields. Enhance extension setting code to allow setting of
9156 * Add print and set support for Issuing Distribution Point CRL extension.
9160 * Change 'Configure' script to enable Camellia by default.
9167 ### Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
9169 * When rejecting SSL/TLS records due to an incorrect version number, never
9170 update s->server with a new major version number. As of
9171 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
9172 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
9173 the previous behavior could result in a read attempt at NULL when
9174 receiving specific incorrect SSL/TLS records once record payload
9175 protection is active. ([CVE-2010-0740])
9177 *Bodo Moeller, Adam Langley <agl@chromium.org>*
9179 * Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
9180 could be crashed if the relevant tables were not present (e.g. chrooted).
9182 *Tomas Hoger <thoger@redhat.com>*
9184 ### Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
9186 * Always check bn_wexpand() return values for failure. ([CVE-2009-3245])
9188 *Martin Olsson, Neel Mehta*
9190 * Fix X509_STORE locking: Every 'objs' access requires a lock (to
9191 accommodate for stack sorting, always a write lock!).
9195 * On some versions of WIN32 Heap32Next is very slow. This can cause
9196 excessive delays in the RAND_poll(): over a minute. As a workaround
9197 include a time check in the inner Heap32Next loop too.
9201 * The code that handled flushing of data in SSL/TLS originally used the
9202 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
9203 the problem outlined in PR#1949. The fix suggested there however can
9204 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
9205 of Apache). So instead simplify the code to flush unconditionally.
9206 This should be fine since flushing with no data to flush is a no op.
9210 * Handle TLS versions 2.0 and later properly and correctly use the
9211 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
9212 off ancient servers have a habit of sticking around for a while...
9216 * Modify compression code so it frees up structures without using the
9217 ex_data callbacks. This works around a problem where some applications
9218 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
9219 restarting) then use compression (e.g. SSL with compression) later.
9220 This results in significant per-connection memory leaks and
9221 has caused some security issues including CVE-2008-1678 and
9226 * Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
9227 change when encrypting or decrypting.
9231 * Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
9232 connect and renegotiate with servers which do not support RI.
9233 Until RI is more widely deployed this option is enabled by default.
9237 * Add "missing" ssl ctrls to clear options and mode.
9241 * If client attempts to renegotiate and doesn't support RI respond with
9242 a no_renegotiation alert as required by RFC5746. Some renegotiating
9243 TLS clients will continue a connection gracefully when they receive
9244 the alert. Unfortunately OpenSSL mishandled this alert and would hang
9245 waiting for a server hello which it will never receive. Now we treat a
9246 received no_renegotiation alert as a fatal error. This is because
9247 applications requesting a renegotiation might well expect it to succeed
9248 and would have no code in place to handle the server denying it so the
9249 only safe thing to do is to terminate the connection.
9253 * Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
9254 peer supports secure renegotiation and 0 otherwise. Print out peer
9255 renegotiation support in s_client/s_server.
9259 * Replace the highly broken and deprecated SPKAC certification method with
9260 the updated NID creation version. This should correctly handle UTF8.
9264 * Implement RFC5746. Re-enable renegotiation but require the extension
9265 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
9266 turns out to be a bad idea. It has been replaced by
9267 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
9268 SSL_CTX_set_options(). This is really not recommended unless you
9269 know what you are doing.
9271 *Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson*
9273 * Fixes to stateless session resumption handling. Use initial_ctx when
9274 issuing and attempting to decrypt tickets in case it has changed during
9275 servername handling. Use a non-zero length session ID when attempting
9276 stateless session resumption: this makes it possible to determine if
9277 a resumption has occurred immediately after receiving server hello
9278 (several places in OpenSSL subtly assume this) instead of later in
9283 * The functions ENGINE_ctrl(), OPENSSL_isservice(),
9284 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
9285 fixes for a few places where the return code is not checked
9288 *Julia Lawall <julia@diku.dk>*
9290 * Add --strict-warnings option to Configure script to include devteam
9291 warnings in other configurations.
9295 * Add support for --libdir option and LIBDIR variable in makefiles. This
9296 makes it possible to install openssl libraries in locations which
9297 have names other than "lib", for example "/usr/lib64" which some
9300 *Steve Henson, based on patch from Jeremy Utley*
9302 * Don't allow the use of leading 0x80 in OIDs. This is a violation of
9303 X690 8.9.12 and can produce some misleading textual output of OIDs.
9305 *Steve Henson, reported by Dan Kaminsky*
9307 * Delete MD2 from algorithm tables. This follows the recommendation in
9308 several standards that it is not used in new applications due to
9309 several cryptographic weaknesses. For binary compatibility reasons
9310 the MD2 API is still compiled in by default.
9314 * Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
9319 * Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
9320 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
9323 *Guenter <lists@gknw.net>*
9325 * Fix the server certificate chain building code to use X509_verify_cert(),
9326 it used to have an ad-hoc builder which was unable to cope with anything
9327 other than a simple chain.
9329 *David Woodhouse <dwmw2@infradead.org>, Steve Henson*
9331 * Don't check self signed certificate signatures in X509_verify_cert()
9332 by default (a flag can override this): it just wastes time without
9333 adding any security. As a useful side effect self signed root CAs
9334 with non-FIPS digests are now usable in FIPS mode.
9338 * In dtls1_process_out_of_seq_message() the check if the current message
9339 is already buffered was missing. For every new message was memory
9340 allocated, allowing an attacker to perform an denial of service attack
9341 with sending out of seq handshake messages until there is no memory
9342 left. Additionally every future message was buffered, even if the
9343 sequence number made no sense and would be part of another handshake.
9344 So only messages with sequence numbers less than 10 in advance will be
9345 buffered. ([CVE-2009-1378])
9347 *Robin Seggelmann, discovered by Daniel Mentz*
9349 * Records are buffered if they arrive with a future epoch to be
9350 processed after finishing the corresponding handshake. There is
9351 currently no limitation to this buffer allowing an attacker to perform
9352 a DOS attack with sending records with future epochs until there is no
9353 memory left. This patch adds the pqueue_size() function to determine
9354 the size of a buffer and limits the record buffer to 100 entries.
9357 *Robin Seggelmann, discovered by Daniel Mentz*
9359 * Keep a copy of frag->msg_header.frag_len so it can be used after the
9360 parent structure is freed. ([CVE-2009-1379])
9364 * Handle non-blocking I/O properly in SSL_shutdown() call.
9366 *Darryl Miles <darryl-mailinglists@netbauds.net>*
9368 * Add `2.5.4.*` OIDs
9370 *Ilya O. <vrghost@gmail.com>*
9372 ### Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
9374 * Disable renegotiation completely - this fixes a severe security
9375 problem ([CVE-2009-3555]) at the cost of breaking all
9376 renegotiation. Renegotiation can be re-enabled by setting
9377 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
9378 run-time. This is really not recommended unless you know what
9383 ### Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
9385 * Don't set val to NULL when freeing up structures, it is freed up by
9386 underlying code. If `sizeof(void *) > sizeof(long)` this can result in
9387 zeroing past the valid field. ([CVE-2009-0789])
9389 *Paolo Ganci <Paolo.Ganci@AdNovum.CH>*
9391 * Fix bug where return value of CMS_SignerInfo_verify_content() was not
9392 checked correctly. This would allow some invalid signed attributes to
9393 appear to verify correctly. ([CVE-2009-0591])
9395 *Ivan Nestlerode <inestlerode@us.ibm.com>*
9397 * Reject UniversalString and BMPString types with invalid lengths. This
9398 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
9399 a legal length. ([CVE-2009-0590])
9403 * Set S/MIME signing as the default purpose rather than setting it
9404 unconditionally. This allows applications to override it at the store
9409 * Permit restricted recursion of ASN1 strings. This is needed in practice
9410 to handle some structures.
9414 * Improve efficiency of mem_gets: don't search whole buffer each time
9417 *Jeremy Shapiro <jnshapir@us.ibm.com>*
9419 * New -hex option for openssl rand.
9423 * Print out UTF8String and NumericString when parsing ASN1.
9427 * Support NumericString type for name components.
9431 * Allow CC in the environment to override the automatically chosen
9432 compiler. Note that nothing is done to ensure flags work with the
9437 ### Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
9439 * Properly check EVP_VerifyFinal() and similar return values
9442 *Ben Laurie, Bodo Moeller, Google Security Team*
9444 * Enable TLS extensions by default.
9448 * Allow the CHIL engine to be loaded, whether the application is
9449 multithreaded or not. (This does not release the developer from the
9450 obligation to set up the dynamic locking callbacks.)
9452 *Sander Temme <sander@temme.net>*
9454 * Use correct exit code if there is an error in dgst command.
9456 *Steve Henson; problem pointed out by Roland Dirlewanger*
9458 * Tweak Configure so that you need to say "experimental-jpake" to enable
9459 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
9463 * Add experimental JPAKE support, including demo authentication in
9464 s_client and s_server.
9468 * Set the comparison function in v3_addr_canonize().
9470 *Rob Austein <sra@hactrn.net>*
9472 * Add support for XMPP STARTTLS in s_client.
9474 *Philip Paeps <philip@freebsd.org>*
9476 * Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
9477 to ensure that even with this option, only ciphersuites in the
9478 server's preference list will be accepted. (Note that the option
9479 applies only when resuming a session, so the earlier behavior was
9480 just about the algorithm choice for symmetric cryptography.)
9484 ### Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
9486 * Fix NULL pointer dereference if a DTLS server received
9487 ChangeCipherSpec as first record ([CVE-2009-1386]).
9491 * Fix a state transition in s3_srvr.c and d1_srvr.c
9492 (was using SSL3_ST_CW_CLNT_HELLO_B, should be `..._ST_SW_SRVR_...`).
9496 * The fix in 0.9.8c that supposedly got rid of unsafe
9497 double-checked locking was incomplete for RSA blinding,
9498 addressing just one layer of what turns out to have been
9499 doubly unsafe triple-checked locking.
9501 So now fix this for real by retiring the MONT_HELPER macro
9502 in crypto/rsa/rsa_eay.c.
9504 *Bodo Moeller; problem pointed out by Marius Schilder*
9506 * Various precautionary measures:
9508 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
9510 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
9511 (NB: This would require knowledge of the secret session ticket key
9512 to exploit, in which case you'd be SOL either way.)
9514 - Change bn_nist.c so that it will properly handle input BIGNUMs
9515 outside the expected range.
9517 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
9520 *Neel Mehta, Bodo Moeller*
9522 * Allow engines to be "soft loaded" - i.e. optionally don't die if
9523 the load fails. Useful for distros.
9525 *Ben Laurie and the FreeBSD team*
9527 * Add support for Local Machine Keyset attribute in PKCS#12 files.
9531 * Fix BN_GF2m_mod_arr() top-bit cleanup code.
9535 * Expand ENGINE to support engine supplied SSL client certificate functions.
9537 This work was sponsored by Logica.
9541 * Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
9542 keystores. Support for SSL/TLS client authentication too.
9543 Not compiled unless enable-capieng specified to Configure.
9545 This work was sponsored by Logica.
9549 * Fix bug in X509_ATTRIBUTE creation: don't set attribute using
9550 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
9551 attribute creation routines such as certificate requests and PKCS#12
9556 ### Changes between 0.9.8g and 0.9.8h [28 May 2008]
9558 * Fix flaw if 'Server Key exchange message' is omitted from a TLS
9559 handshake which could lead to a client crash as found using the
9560 Codenomicon TLS test suite ([CVE-2008-1672])
9562 *Steve Henson, Mark Cox*
9564 * Fix double free in TLS server name extensions which could lead to
9565 a remote crash found by Codenomicon TLS test suite ([CVE-2008-0891])
9569 * Clear error queue in SSL_CTX_use_certificate_chain_file()
9571 Clear the error queue to ensure that error entries left from
9572 older function calls do not interfere with the correct operation.
9574 *Lutz Jaenicke, Erik de Castro Lopo*
9576 * Remove root CA certificates of commercial CAs:
9578 The OpenSSL project does not recommend any specific CA and does not
9579 have any policy with respect to including or excluding any CA.
9580 Therefore it does not make any sense to ship an arbitrary selection
9581 of root CA certificates with the OpenSSL software.
9585 * RSA OAEP patches to fix two separate invalid memory reads.
9586 The first one involves inputs when 'lzero' is greater than
9587 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
9588 before the beginning of from). The second one involves inputs where
9589 the 'db' section contains nothing but zeroes (there is a one-byte
9590 invalid read after the end of 'db').
9592 *Ivan Nestlerode <inestlerode@us.ibm.com>*
9594 * Partial backport from 0.9.9-dev:
9596 Introduce bn_mul_mont (dedicated Montgomery multiplication
9597 procedure) as a candidate for BIGNUM assembler implementation.
9598 While 0.9.9-dev uses assembler for various architectures, only
9599 x86_64 is available by default here in the 0.9.8 branch, and
9600 32-bit x86 is available through a compile-time setting.
9602 To try the 32-bit x86 assembler implementation, use Configure
9603 option "enable-montasm" (which exists only for this backport).
9605 As "enable-montasm" for 32-bit x86 disclaims code stability
9606 anyway, in this constellation we activate additional code
9607 backported from 0.9.9-dev for further performance improvements,
9608 namely BN_from_montgomery_word. (To enable this otherwise,
9609 e.g. x86_64, try `-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD`.)
9611 *Andy Polyakov (backport partially by Bodo Moeller)*
9613 * Add TLS session ticket callback. This allows an application to set
9614 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
9615 values. This is useful for key rollover for example where several key
9616 sets may exist with different names.
9620 * Reverse ENGINE-internal logic for caching default ENGINE handles.
9621 This was broken until now in 0.9.8 releases, such that the only way
9622 a registered ENGINE could be used (assuming it initialises
9623 successfully on the host) was to explicitly set it as the default
9624 for the relevant algorithms. This is in contradiction with 0.9.7
9625 behaviour and the documentation. With this fix, when an ENGINE is
9626 registered into a given algorithm's table of implementations, the
9627 'uptodate' flag is reset so that auto-discovery will be used next
9628 time a new context for that algorithm attempts to select an
9631 *Ian Lister (tweaked by Geoff Thorpe)*
9633 * Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
9634 implementation in the following ways:
9636 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
9639 Lack of BER streaming support means one pass streaming processing is
9640 only supported if data is detached: setting the streaming flag is
9641 ignored for embedded content.
9643 CMS support is disabled by default and must be explicitly enabled
9644 with the enable-cms configuration option.
9648 * Update the GMP engine glue to do direct copies between BIGNUM and
9649 mpz_t when openssl and GMP use the same limb size. Otherwise the
9650 existing "conversion via a text string export" trick is still used.
9652 *Paul Sheer <paulsheer@gmail.com>*
9654 * Zlib compression BIO. This is a filter BIO which compressed and
9655 uncompresses any data passed through it.
9659 * Add AES_wrap_key() and AES_unwrap_key() functions to implement
9660 RFC3394 compatible AES key wrapping.
9664 * Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
9665 sets string data without copying. X509_ALGOR_set0() and
9666 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
9667 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
9668 from an X509_ATTRIBUTE structure optionally checking it occurs only
9669 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
9674 * Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
9675 to get the expected BN_FLG_CONSTTIME behavior.
9677 *Bodo Moeller (Google)*
9681 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
9682 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
9683 - added some more tests to do_tests.pl
9684 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
9685 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
9686 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
9687 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
9688 - various changes to netware.pl to enable gcc-cross builds on Win32
9690 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
9691 - various changes to fix missing prototype warnings
9692 - fixed x86nasm.pl to create correct asm files for NASM COFF output
9693 - added AES, WHIRLPOOL and CPUID assembler code to build files
9694 - added missing AES assembler make rules to mk1mf.pl
9695 - fixed order of includes in `apps/ocsp.c` so that `e_os.h` settings apply
9697 *Guenter Knauf <eflash@gmx.net>*
9699 * Implement certificate status request TLS extension defined in RFC3546.
9700 A client can set the appropriate parameters and receive the encoded
9701 OCSP response via a callback. A server can query the supplied parameters
9702 and set the encoded OCSP response in the callback. Add simplified examples
9703 to s_client and s_server.
9707 ### Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
9710 + Binary incompatibility of ssl_ctx_st structure
9711 + DTLS interoperation with non-compliant servers
9712 + Don't call get_session_cb() without proposed session
9713 + Fix ia64 assembler code
9715 *Andy Polyakov, Steve Henson*
9717 ### Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
9719 * DTLS Handshake overhaul. There were longstanding issues with
9720 OpenSSL DTLS implementation, which were making it impossible for
9721 RFC 4347 compliant client to communicate with OpenSSL server.
9722 Unfortunately just fixing these incompatibilities would "cut off"
9723 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
9724 server keeps tolerating non RFC compliant syntax. The opposite is
9725 not true, 0.9.8f client can not communicate with earlier server.
9726 This update even addresses CVE-2007-4995.
9730 * Changes to avoid need for function casts in OpenSSL: some compilers
9731 (gcc 4.2 and later) reject their use.
9732 *Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
9735 * Add RFC4507 support to OpenSSL. This includes the corrections in
9736 RFC4507bis. The encrypted ticket format is an encrypted encoded
9737 SSL_SESSION structure, that way new session features are automatically
9740 If a client application caches session in an SSL_SESSION structure
9741 support is transparent because tickets are now stored in the encoded
9744 The SSL_CTX structure automatically generates keys for ticket
9745 protection in servers so again support should be possible
9746 with no application modification.
9748 If a client or server wishes to disable RFC4507 support then the option
9749 SSL_OP_NO_TICKET can be set.
9751 Add a TLS extension debugging callback to allow the contents of any client
9752 or server extensions to be examined.
9754 This work was sponsored by Google.
9758 * Add initial support for TLS extensions, specifically for the server_name
9759 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
9760 have new members for a host name. The SSL data structure has an
9761 additional member `SSL_CTX *initial_ctx` so that new sessions can be
9762 stored in that context to allow for session resumption, even after the
9763 SSL has been switched to a new SSL_CTX in reaction to a client's
9764 server_name extension.
9766 New functions (subject to change):
9768 SSL_get_servername()
9769 SSL_get_servername_type()
9772 New CTRL codes and macros (subject to change):
9774 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
9775 - SSL_CTX_set_tlsext_servername_callback()
9776 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
9777 - SSL_CTX_set_tlsext_servername_arg()
9778 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
9780 openssl s_client has a new '-servername ...' option.
9782 openssl s_server has new options '-servername_host ...', '-cert2 ...',
9783 '-key2 ...', '-servername_fatal' (subject to change). This allows
9784 testing the HostName extension for a specific single host name ('-cert'
9785 and '-key' remain fallbacks for handshakes without HostName
9786 negotiation). If the unrecognized_name alert has to be sent, this by
9787 default is a warning; it becomes fatal with the '-servername_fatal'
9790 *Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson*
9792 * Add AES and SSE2 assembly language support to VC++ build.
9796 * Mitigate attack on final subtraction in Montgomery reduction.
9800 * Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
9801 (which previously caused an internal error).
9805 * Squeeze another 10% out of IGE mode when in != out.
9809 * AES IGE mode speedup.
9811 *Dean Gaudet (Google)*
9813 * Add the Korean symmetric 128-bit cipher SEED (see
9814 <http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp>) and
9815 add SEED ciphersuites from RFC 4162:
9817 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
9818 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
9819 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
9820 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
9822 To minimize changes between patchlevels in the OpenSSL 0.9.8
9823 series, SEED remains excluded from compilation unless OpenSSL
9824 is configured with 'enable-seed'.
9826 *KISA, Bodo Moeller*
9828 * Mitigate branch prediction attacks, which can be practical if a
9829 single processor is shared, allowing a spy process to extract
9830 information. For detailed background information, see
9831 <http://eprint.iacr.org/2007/039> (O. Aciicmez, S. Gueron,
9832 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
9833 and Necessary Software Countermeasures"). The core of the change
9834 are new versions BN_div_no_branch() and
9835 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
9836 respectively, which are slower, but avoid the security-relevant
9837 conditional branches. These are automatically called by BN_div()
9838 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
9839 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
9840 remove a conditional branch.
9842 BN_FLG_CONSTTIME is the new name for the previous
9843 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
9844 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
9845 in the exponent causes BN_mod_exp_mont() to use the alternative
9846 implementation in BN_mod_exp_mont_consttime().) The old name
9847 remains as a deprecated alias.
9849 Similarly, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
9850 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
9851 constant-time implementations for more than just exponentiation.
9852 Here too the old name is kept as a deprecated alias.
9854 BN_BLINDING_new() will now use BN_dup() for the modulus so that
9855 the BN_BLINDING structure gets an independent copy of the
9856 modulus. This means that the previous `BIGNUM *m` argument to
9857 BN_BLINDING_new() and to BN_BLINDING_create_param() now
9858 essentially becomes `const BIGNUM *m`, although we can't actually
9859 change this in the header file before 0.9.9. It allows
9860 RSA_setup_blinding() to use BN_with_flags() on the modulus to
9861 enable BN_FLG_CONSTTIME.
9863 *Matthew D Wood (Intel Corp)*
9865 * In the SSL/TLS server implementation, be strict about session ID
9866 context matching (which matters if an application uses a single
9867 external cache for different purposes). Previously,
9868 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
9869 set. This did ensure strict client verification, but meant that,
9870 with applications using a single external cache for quite
9871 different requirements, clients could circumvent ciphersuite
9872 restrictions for a given session ID context by starting a session
9873 in a different context.
9877 * Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
9878 a ciphersuite string such as "DEFAULT:RSA" cannot enable
9879 authentication-only ciphersuites.
9883 * Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
9884 not complete and could lead to a possible single byte overflow
9885 ([CVE-2007-5135]) [Ben Laurie]
9887 ### Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
9889 * Since AES128 and AES256 (and similarly Camellia128 and
9890 Camellia256) share a single mask bit in the logic of
9891 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
9892 kludge to work properly if AES128 is available and AES256 isn't
9893 (or if Camellia128 is available and Camellia256 isn't).
9897 * Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
9898 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
9899 When a point or a seed is encoded in a BIT STRING, we need to
9900 prevent the removal of trailing zero bits to get the proper DER
9901 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
9902 of a NamedBitList, for which trailing 0 bits need to be removed.)
9906 * Have SSL/TLS server implementation tolerate "mismatched" record
9907 protocol version while receiving ClientHello even if the
9908 ClientHello is fragmented. (The server can't insist on the
9909 particular protocol version it has chosen before the ServerHello
9910 message has informed the client about his choice.)
9914 * Add RFC 3779 support.
9916 *Rob Austein for ARIN, Ben Laurie*
9918 * Load error codes if they are not already present instead of using a
9919 static variable. This allows them to be cleanly unloaded and reloaded.
9920 Improve header file function name parsing.
9924 * extend SMTP and IMAP protocol emulation in s_client to use EHLO
9925 or CAPABILITY handshake as required by RFCs.
9929 ### Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
9931 * Introduce limits to prevent malicious keys being able to
9932 cause a denial of service. ([CVE-2006-2940])
9934 *Steve Henson, Bodo Moeller*
9936 * Fix ASN.1 parsing of certain invalid structures that can result
9937 in a denial of service. ([CVE-2006-2937]) [Steve Henson]
9939 * Fix buffer overflow in SSL_get_shared_ciphers() function.
9940 ([CVE-2006-3738]) [Tavis Ormandy and Will Drewry, Google Security Team]
9942 * Fix SSL client code which could crash if connecting to a
9943 malicious SSLv2 server. ([CVE-2006-4343])
9945 *Tavis Ormandy and Will Drewry, Google Security Team*
9947 * Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
9948 match only those. Before that, "AES256-SHA" would be interpreted
9949 as a pattern and match "AES128-SHA" too (since AES128-SHA got
9950 the same strength classification in 0.9.7h) as we currently only
9951 have a single AES bit in the ciphersuite description bitmap.
9952 That change, however, also applied to ciphersuite strings such as
9953 "RC4-MD5" that intentionally matched multiple ciphersuites --
9954 namely, SSL 2.0 ciphersuites in addition to the more common ones
9955 from SSL 3.0/TLS 1.0.
9957 So we change the selection algorithm again: Naming an explicit
9958 ciphersuite selects this one ciphersuite, and any other similar
9959 ciphersuite (same bitmap) from *other* protocol versions.
9960 Thus, "RC4-MD5" again will properly select both the SSL 2.0
9961 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
9963 Since SSL 2.0 does not have any ciphersuites for which the
9964 128/256 bit distinction would be relevant, this works for now.
9965 The proper fix will be to use different bits for AES128 and
9966 AES256, which would have avoided the problems from the beginning;
9967 however, bits are scarce, so we can only do this in a new release
9968 (not just a patchlevel) when we can change the SSL_CIPHER
9969 definition to split the single 'unsigned long mask' bitmap into
9970 multiple values to extend the available space.
9974 ### Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
9976 * Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
9977 ([CVE-2006-4339]) [Ben Laurie and Google Security Team]
9979 * Add AES IGE and biIGE modes.
9983 * Change the Unix randomness entropy gathering to use poll() when
9984 possible instead of select(), since the latter has some
9985 undesirable limitations.
9987 *Darryl Miles via Richard Levitte and Bodo Moeller*
9989 * Disable "ECCdraft" ciphersuites more thoroughly. Now special
9990 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
9991 cannot be implicitly activated as part of, e.g., the "AES" alias.
9992 However, please upgrade to OpenSSL 0.9.9[-dev] for
9993 non-experimental use of the ECC ciphersuites to get TLS extension
9994 support, which is required for curve and point format negotiation
9995 to avoid potential handshake problems.
9999 * Disable rogue ciphersuites:
10001 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
10002 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
10003 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
10005 The latter two were purportedly from
10006 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
10009 Also deactivate the remaining ciphersuites from
10010 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
10011 unofficial, and the ID has long expired.
10015 * Fix RSA blinding Heisenbug (problems sometimes occurred on
10016 dual-core machines) and other potential thread-safety issues.
10020 * Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
10021 versions), which is now available for royalty-free use
10022 (see <http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html>).
10023 Also, add Camellia TLS ciphersuites from RFC 4132.
10025 To minimize changes between patchlevels in the OpenSSL 0.9.8
10026 series, Camellia remains excluded from compilation unless OpenSSL
10027 is configured with 'enable-camellia'.
10031 * Disable the padding bug check when compression is in use. The padding
10032 bug check assumes the first packet is of even length, this is not
10033 necessarily true if compression is enabled and can result in false
10034 positives causing handshake failure. The actual bug test is ancient
10035 code so it is hoped that implementations will either have fixed it by
10036 now or any which still have the bug do not support compression.
10040 ### Changes between 0.9.8a and 0.9.8b [04 May 2006]
10042 * When applying a cipher rule check to see if string match is an explicit
10043 cipher suite and only match that one cipher suite if it is.
10047 * Link in manifests for VC++ if needed.
10049 *Austin Ziegler <halostatue@gmail.com>*
10051 * Update support for ECC-based TLS ciphersuites according to
10052 draft-ietf-tls-ecc-12.txt with proposed changes (but without
10053 TLS extensions, which are supported starting with the 0.9.9
10054 branch, not in the OpenSSL 0.9.8 branch).
10058 * New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
10059 opaque EVP_CIPHER_CTX handling.
10063 * Fixes and enhancements to zlib compression code. We now only use
10064 "zlib1.dll" and use the default `__cdecl` calling convention on Win32
10065 to conform with the standards mentioned here:
10066 <http://www.zlib.net/DLL_FAQ.txt>
10067 Static zlib linking now works on Windows and the new --with-zlib-include
10068 --with-zlib-lib options to Configure can be used to supply the location
10069 of the headers and library. Gracefully handle case where zlib library
10074 * Several fixes and enhancements to the OID generation code. The old code
10075 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
10076 handle numbers larger than ULONG_MAX, truncated printing and had a
10077 non standard OBJ_obj2txt() behaviour.
10081 * Add support for building of engines under engine/ as shared libraries
10082 under VC++ build system.
10086 * Corrected the numerous bugs in the Win32 path splitter in DSO.
10087 Hopefully, we will not see any false combination of paths any more.
10091 ### Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
10093 * Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
10094 (part of SSL_OP_ALL). This option used to disable the
10095 countermeasure against man-in-the-middle protocol-version
10096 rollback in the SSL 2.0 server implementation, which is a bad
10097 idea. ([CVE-2005-2969])
10099 *Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
10100 for Information Security, National Institute of Advanced Industrial
10101 Science and Technology [AIST], Japan)*
10103 * Add two function to clear and return the verify parameter flags.
10107 * Keep cipherlists sorted in the source instead of sorting them at
10108 runtime, thus removing the need for a lock.
10112 * Avoid some small subgroup attacks in Diffie-Hellman.
10114 *Nick Mathewson and Ben Laurie*
10116 * Add functions for well-known primes.
10120 * Extended Windows CE support.
10122 *Satoshi Nakamura and Andy Polyakov*
10124 * Initialize SSL_METHOD structures at compile time instead of during
10125 runtime, thus removing the need for a lock.
10129 * Make PKCS7_decrypt() work even if no certificate is supplied by
10130 attempting to decrypt each encrypted key in turn. Add support to
10135 ### Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
10137 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
10140 * Add libcrypto.pc and libssl.pc for those who feel they need them.
10144 * Change CA.sh and CA.pl so they don't bundle the CSR and the private
10145 key into the same file any more.
10149 * Add initial support for Win64, both IA64 and AMD64/x64 flavors.
10153 * Add -utf8 command line and config file option to 'ca'.
10155 *Stefan <stf@udoma.org*
10157 * Removed the macro des_crypt(), as it seems to conflict with some
10158 libraries. Use DES_crypt().
10162 * Correct naming of the 'chil' and '4758cca' ENGINEs. This
10163 involves renaming the source and generated shared-libs for
10164 both. The engines will accept the corrected or legacy ids
10165 ('ncipher' and '4758_cca' respectively) when binding. NB,
10166 this only applies when building 'shared'.
10168 *Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe*
10170 * Add attribute functions to EVP_PKEY structure. Modify
10171 PKCS12_create() to recognize a CSP name attribute and
10172 use it. Make -CSP option work again in pkcs12 utility.
10176 * Add new functionality to the bn blinding code:
10177 - automatic re-creation of the BN_BLINDING parameters after
10178 a fixed number of uses (currently 32)
10179 - add new function for parameter creation
10180 - introduce flags to control the update behaviour of the
10181 BN_BLINDING parameters
10182 - hide BN_BLINDING structure
10183 Add a second BN_BLINDING slot to the RSA structure to improve
10184 performance when a single RSA object is shared among several
10189 * Add support for DTLS.
10191 *Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie*
10193 * Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
10194 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
10198 * Remove buggy and incomplete DH cert support from
10199 ssl/ssl_rsa.c and ssl/s3_both.c
10203 * Use SHA-1 instead of MD5 as the default digest algorithm for
10204 the `apps/openssl` commands.
10208 * Compile clean with "-Wall -Wmissing-prototypes
10209 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
10210 DEBUG_SAFESTACK must also be set.
10214 * Change ./Configure so that certain algorithms can be disabled by default.
10215 The new counterpiece to "no-xxx" is "enable-xxx".
10217 The patented RC5 and MDC2 algorithms will now be disabled unless
10218 "enable-rc5" and "enable-mdc2", respectively, are specified.
10220 (IDEA remains enabled despite being patented. This is because IDEA
10221 is frequently required for interoperability, and there is no license
10222 fee for non-commercial use. As before, "no-idea" can be used to
10223 avoid this algorithm.)
10227 * Add processing of proxy certificates (see RFC 3820). This work was
10228 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
10229 EGEE (Enabling Grids for E-science in Europe).
10233 * RC4 performance overhaul on modern architectures/implementations, such
10234 as Intel P4, IA-64 and AMD64.
10238 * New utility extract-section.pl. This can be used specify an alternative
10239 section number in a pod file instead of having to treat each file as
10240 a separate case in Makefile. This can be done by adding two lines to the
10243 =for comment openssl_section:XXX
10245 The blank line is mandatory.
10249 * New arguments -certform, -keyform and -pass for s_client and s_server
10250 to allow alternative format key and certificate files and passphrase
10255 * New structure X509_VERIFY_PARAM which combines current verify parameters,
10256 update associated structures and add various utility functions.
10258 Add new policy related verify parameters, include policy checking in
10259 standard verify code. Enhance 'smime' application with extra parameters
10260 to support policy checking and print out.
10264 * Add a new engine to support VIA PadLock ACE extensions in the VIA C3
10265 Nehemiah processors. These extensions support AES encryption in hardware
10266 as well as RNG (though RNG support is currently disabled).
10268 *Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov*
10270 * Deprecate `BN_[get|set]_params()` functions (they were ignored internally).
10274 * New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
10276 *Andy Polyakov and a number of other people*
10278 * Improved PowerPC platform support. Most notably BIGNUM assembler
10279 implementation contributed by IBM.
10281 *Suresh Chari, Peter Waltenberg, Andy Polyakov*
10283 * The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
10284 exponent rather than 'unsigned long'. There is a corresponding change to
10285 the new 'rsa_keygen' element of the RSA_METHOD structure.
10287 *Jelte Jansen, Geoff Thorpe*
10289 * Functionality for creating the initial serial number file is now
10290 moved from CA.pl to the 'ca' utility with a new option -create_serial.
10292 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
10293 number file to 1, which is bound to cause problems. To avoid
10294 the problems while respecting compatibility between different 0.9.7
10295 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
10296 CA.pl for serial number initialization. With the new release 0.9.8,
10297 we can fix the problem directly in the 'ca' utility.)
10301 * Reduced header interdependencies by declaring more opaque objects in
10302 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
10303 give fewer recursive includes, which could break lazy source code - so
10304 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
10305 developers should define this symbol when building and using openssl to
10306 ensure they track the recommended behaviour, interfaces, [etc], but
10307 backwards-compatible behaviour prevails when this isn't defined.
10311 * New function X509_POLICY_NODE_print() which prints out policy nodes.
10315 * Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
10316 This will generate a random key of the appropriate length based on the
10317 cipher context. The EVP_CIPHER can provide its own random key generation
10318 routine to support keys of a specific form. This is used in the des and
10319 3des routines to generate a key of the correct parity. Update S/MIME
10320 code to use new functions and hence generate correct parity DES keys.
10321 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
10322 valid (weak or incorrect parity).
10326 * Add a local set of CRLs that can be used by X509_verify_cert() as well
10327 as looking them up. This is useful when the verified structure may contain
10328 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
10329 present unless the new PKCS7_NO_CRL flag is asserted.
10333 * Extend ASN1 oid configuration module. It now additionally accepts the
10336 shortName = some long name, 1.2.3.4
10340 * Reimplemented the BN_CTX implementation. There is now no more static
10341 limitation on the number of variables it can handle nor the depth of the
10342 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
10343 information can now expand as required, and rather than having a single
10344 static array of bignums, BN_CTX now uses a linked-list of such arrays
10345 allowing it to expand on demand whilst maintaining the usefulness of
10346 BN_CTX's "bundling".
10350 * Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
10351 to allow all RSA operations to function using a single BN_CTX.
10355 * Preliminary support for certificate policy evaluation and checking. This
10356 is initially intended to pass the tests outlined in "Conformance Testing
10357 of Relying Party Client Certificate Path Processing Logic" v1.07.
10361 * bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
10362 remained unused and not that useful. A variety of other little bignum
10363 tweaks and fixes have also been made continuing on from the audit (see
10368 * Constify all or almost all d2i, c2i, s2i and r2i functions, along with
10369 associated ASN1, EVP and SSL functions and old ASN1 macros.
10373 * BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
10374 and this should never fail. So the return value from the use of
10375 BN_set_word() (which can fail due to needless expansion) is now deprecated;
10376 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
10380 * BN_CTX_get() should return zero-valued bignums, providing the same
10381 initialised value as BN_new().
10383 *Geoff Thorpe, suggested by Ulf Möller*
10385 * Support for inhibitAnyPolicy certificate extension.
10389 * An audit of the BIGNUM code is underway, for which debugging code is
10390 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
10391 is considered valid when processing BIGNUMs, and causes execution to
10392 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
10393 further steps are taken to deliberately pollute unused data in BIGNUM
10394 structures to try and expose faulty code further on. For now, openssl will
10395 (in its default mode of operation) continue to tolerate the inconsistent
10396 forms that it has tolerated in the past, but authors and packagers should
10397 consider trying openssl and their own applications when compiled with
10398 these debugging symbols defined. It will help highlight potential bugs in
10399 their own code, and will improve the test coverage for OpenSSL itself. At
10400 some point, these tighter rules will become openssl's default to improve
10401 maintainability, though the assert()s and other overheads will remain only
10402 in debugging configurations. See bn.h for more details.
10404 *Geoff Thorpe, Nils Larsch, Ulf Möller*
10406 * BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
10407 that can only be obtained through BN_CTX_new() (which implicitly
10408 initialises it). The presence of this function only made it possible
10409 to overwrite an existing structure (and cause memory leaks).
10413 * Because of the callback-based approach for implementing LHASH as a
10414 template type, lh_insert() adds opaque objects to hash-tables and
10415 lh_doall() or lh_doall_arg() are typically used with a destructor callback
10416 to clean up those corresponding objects before destroying the hash table
10417 (and losing the object pointers). So some over-zealous constifications in
10418 LHASH have been relaxed so that lh_insert() does not take (nor store) the
10419 objects as "const" and the `lh_doall[_arg]` callback wrappers are not
10420 prototyped to have "const" restrictions on the object pointers they are
10421 given (and so aren't required to cast them away any more).
10425 * The tmdiff.h API was so ugly and minimal that our own timing utility
10426 (speed) prefers to use its own implementation. The two implementations
10427 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
10428 its object type properly exposed (MS_TM) instead of casting to/from
10429 `char *`. This may still change yet if someone realises MS_TM and
10431 aren't necessarily the greatest nomenclatures - but this is what was used
10432 internally to the implementation so I've used that for now.
10436 * Ensure that deprecated functions do not get compiled when
10437 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
10438 the self-tests were still using deprecated key-generation functions so
10439 these have been updated also.
10443 * Reorganise PKCS#7 code to separate the digest location functionality
10444 into PKCS7_find_digest(), digest addition into PKCS7_bio_add_digest().
10445 New function PKCS7_set_digest() to set the digest type for PKCS#7
10446 digestedData type. Add additional code to correctly generate the
10447 digestedData type and add support for this type in PKCS7 initialization
10452 * New function PKCS7_set0_type_other() this initializes a PKCS7
10453 structure of type "other".
10457 * Fix prime generation loop in crypto/bn/bn_prime.pl by making
10458 sure the loop does correctly stop and breaking ("division by zero")
10459 modulus operations are not performed. The (pre-generated) prime
10460 table crypto/bn/bn_prime.h was already correct, but it could not be
10461 re-generated on some platforms because of the "division by zero"
10462 situation in the script.
10464 *Ralf S. Engelschall*
10466 * Update support for ECC-based TLS ciphersuites according to
10467 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
10468 SHA-1 now is only used for "small" curves (where the
10469 representation of a field element takes up to 24 bytes); for
10470 larger curves, the field element resulting from ECDH is directly
10471 used as premaster secret.
10473 *Douglas Stebila (Sun Microsystems Laboratories)*
10475 * Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
10476 curve secp160r1 to the tests.
10478 *Douglas Stebila (Sun Microsystems Laboratories)*
10480 * Add the possibility to load symbols globally with DSO.
10482 *Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte*
10484 * Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
10485 control of the error stack.
10489 * Add support for STORE in ENGINE.
10493 * Add the STORE type. The intention is to provide a common interface
10494 to certificate and key stores, be they simple file-based stores, or
10495 HSM-type store, or LDAP stores, or...
10496 NOTE: The code is currently UNTESTED and isn't really used anywhere.
10500 * Add a generic structure called OPENSSL_ITEM. This can be used to
10501 pass a list of arguments to any function as well as provide a way
10502 for a function to pass data back to the caller.
10506 * Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
10507 works like BUF_strdup() but can be used to duplicate a portion of
10508 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
10513 * Add the function sk_find_ex() which works like sk_find(), but will
10514 return an index to an element even if an exact match couldn't be
10515 found. The index is guaranteed to point at the element where the
10516 searched-for key would be inserted to preserve sorting order.
10520 * Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
10521 takes an extra flags argument for optional functionality. Currently,
10522 the following flags are defined:
10524 OBJ_BSEARCH_VALUE_ON_NOMATCH
10525 This one gets OBJ_bsearch_ex() to return a pointer to the first
10526 element where the comparing function returns a negative or zero
10529 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
10530 This one gets OBJ_bsearch_ex() to return a pointer to the first
10531 element where the comparing function returns zero. This is useful
10532 if there are more than one element where the comparing function
10537 * Make it possible to create self-signed certificates with 'openssl ca'
10538 in such a way that the self-signed certificate becomes part of the
10539 CA database and uses the same mechanisms for serial number generation
10540 as all other certificate signing. The new flag '-selfsign' enables
10541 this functionality. Adapt CA.sh and CA.pl.in.
10545 * Add functionality to check the public key of a certificate request
10546 against a given private. This is useful to check that a certificate
10547 request can be signed by that key (self-signing).
10551 * Make it possible to have multiple active certificates with the same
10552 subject in the CA index file. This is done only if the keyword
10553 'unique_subject' is set to 'no' in the main CA section (default
10554 if 'CA_default') of the configuration file. The value is saved
10555 with the database itself in a separate index attribute file,
10556 named like the index file with '.attr' appended to the name.
10560 * Generate multi-valued AVAs using '+' notation in config files for
10565 * Support for nameConstraints certificate extension.
10569 * Support for policyConstraints certificate extension.
10573 * Support for policyMappings certificate extension.
10577 * Make sure the default DSA_METHOD implementation only uses its
10578 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
10579 and change its own handlers to be NULL so as to remove unnecessary
10580 indirection. This lets alternative implementations fallback to the
10581 default implementation more easily.
10585 * Support for directoryName in GeneralName related extensions
10590 * Make it possible to link applications using Makefile.shared.
10591 Make that possible even when linking against static libraries!
10595 * Support for single pass processing for S/MIME signing. This now
10596 means that S/MIME signing can be done from a pipe, in addition
10597 cleartext signing (multipart/signed type) is effectively streaming
10598 and the signed data does not need to be all held in memory.
10600 This is done with a new flag PKCS7_STREAM. When this flag is set
10601 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
10602 is done after the data is output (and digests calculated) in
10603 SMIME_write_PKCS7().
10607 * Add full support for -rpath/-R, both in shared libraries and
10608 applications, at least on the platforms where it's known how
10613 * In crypto/ec/ec_mult.c, implement fast point multiplication with
10614 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
10615 will now compute a table of multiples of the generator that
10616 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
10617 faster (notably in the case of a single point multiplication,
10618 scalar * generator).
10620 *Nils Larsch, Bodo Moeller*
10622 * IPv6 support for certificate extensions. The various extensions
10623 which use the IP:a.b.c.d can now take IPv6 addresses using the
10624 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
10629 * Added an ENGINE that implements RSA by performing private key
10630 exponentiations with the GMP library. The conversions to and from
10631 GMP's mpz_t format aren't optimised nor are any montgomery forms
10632 cached, and on x86 it appears OpenSSL's own performance has caught up.
10633 However there are likely to be other architectures where GMP could
10634 provide a boost. This ENGINE is not built in by default, but it can be
10635 specified at Configure time and should be accompanied by the necessary
10636 linker additions, eg;
10637 ./config -DOPENSSL_USE_GMP -lgmp
10641 * "openssl engine" will not display ENGINE/DSO load failure errors when
10642 testing availability of engines with "-t" - the old behaviour is
10643 produced by increasing the feature's verbosity with "-tt".
10647 * ECDSA routines: under certain error conditions uninitialized BN objects
10648 could be freed. Solution: make sure initialization is performed early
10649 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
10654 * Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
10655 and DH_METHOD (eg. by ENGINE implementations) to override the normal
10656 software implementations. For DSA and DH, parameter generation can
10657 also be overridden by providing the appropriate method callbacks.
10661 * Change the "progress" mechanism used in key-generation and
10662 primality testing to functions that take a new BN_GENCB pointer in
10663 place of callback/argument pairs. The new API functions have `_ex`
10664 postfixes and the older functions are reimplemented as wrappers for
10665 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
10666 declarations of the old functions to help (graceful) attempts to
10667 migrate to the new functions. Also, the new key-generation API
10668 functions operate on a caller-supplied key-structure and return
10669 success/failure rather than returning a key or NULL - this is to
10670 help make "keygen" another member function of RSA_METHOD etc.
10672 Example for using the new callback interface:
10674 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
10675 void *my_arg = ...;
10678 BN_GENCB_set(&my_cb, my_callback, my_arg);
10680 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
10681 /* For the meaning of a, b in calls to my_callback(), see the
10682 * documentation of the function that calls the callback.
10683 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
10684 * my_callback should return 1 if it wants BN_is_prime_ex()
10685 * to continue, or 0 to stop.
10690 * Change the ZLIB compression method to be stateful, and make it
10691 available to TLS with the number defined in
10692 draft-ietf-tls-compression-04.txt.
10696 * Add the ASN.1 structures and functions for CertificatePair, which
10697 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
10699 CertificatePair ::= SEQUENCE {
10700 forward [0] Certificate OPTIONAL,
10701 reverse [1] Certificate OPTIONAL,
10702 -- at least one of the pair shall be present -- }
10704 Also implement the PEM functions to read and write certificate
10705 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
10707 This needed to be defined, mostly for the sake of the LDAP
10708 attribute crossCertificatePair, but may prove useful elsewhere as
10713 * Make it possible to inhibit symlinking of shared libraries in
10714 Makefile.shared, for Cygwin's sake.
10718 * Extend the BIGNUM API by creating a function
10719 void BN_set_negative(BIGNUM *a, int neg);
10720 and a macro that behave like
10721 int BN_is_negative(const BIGNUM *a);
10723 to avoid the need to access 'a->neg' directly in applications.
10727 * Implement fast modular reduction for pseudo-Mersenne primes
10728 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
10729 EC_GROUP_new_curve_GFp() will now automatically use this
10732 *Nils Larsch <nla@trustcenter.de>*
10734 * Add new lock type (CRYPTO_LOCK_BN).
10738 * Change the ENGINE framework to automatically load engines
10739 dynamically from specific directories unless they could be
10740 found to already be built in or loaded. Move all the
10741 current engines except for the cryptodev one to a new
10742 directory engines/.
10743 The engines in engines/ are built as shared libraries if
10744 the "shared" options was given to ./Configure or ./config.
10745 Otherwise, they are inserted in libcrypto.a.
10746 /usr/local/ssl/engines is the default directory for dynamic
10747 engines, but that can be overridden at configure time through
10748 the usual use of --prefix and/or --openssldir, and at run
10749 time with the environment variable OPENSSL_ENGINES.
10751 *Geoff Thorpe and Richard Levitte*
10753 * Add Makefile.shared, a helper makefile to build shared
10754 libraries. Adapt Makefile.org.
10758 * Add version info to Win32 DLLs.
10760 *Peter 'Luna' Runestig" <peter@runestig.com>*
10762 * Add new 'medium level' PKCS#12 API. Certificates and keys
10763 can be added using this API to created arbitrary PKCS#12
10764 files while avoiding the low-level API.
10766 New options to PKCS12_create(), key or cert can be NULL and
10767 will then be omitted from the output file. The encryption
10768 algorithm NIDs can be set to -1 for no encryption, the mac
10769 iteration count can be set to 0 to omit the mac.
10771 Enhance pkcs12 utility by making the -nokeys and -nocerts
10772 options work when creating a PKCS#12 file. New option -nomac
10773 to omit the mac, NONE can be set for an encryption algorithm.
10774 New code is modified to use the enhanced PKCS12_create()
10775 instead of the low-level API.
10779 * Extend ASN1 encoder to support indefinite length constructed
10780 encoding. This can output sequences tags and octet strings in
10781 this form. Modify pk7_asn1.c to support indefinite length
10782 encoding. This is experimental and needs additional code to
10783 be useful, such as an ASN1 bio and some enhanced streaming
10786 Extend template encode functionality so that tagging is passed
10787 down to the template encoder.
10791 * Let 'openssl req' fail if an argument to '-newkey' is not
10792 recognized instead of using RSA as a default.
10796 * Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
10797 As these are not official, they are not included in "ALL";
10798 the "ECCdraft" ciphersuite group alias can be used to select them.
10800 *Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)*
10802 * Add ECDH engine support.
10804 *Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)*
10806 * Add ECDH in new directory crypto/ecdh/.
10808 *Douglas Stebila (Sun Microsystems Laboratories)*
10810 * Let BN_rand_range() abort with an error after 100 iterations
10811 without success (which indicates a broken PRNG).
10815 * Change BN_mod_sqrt() so that it verifies that the input value
10816 is really the square of the return value. (Previously,
10817 BN_mod_sqrt would show GIGO behaviour.)
10821 * Add named elliptic curves over binary fields from X9.62, SECG,
10822 and WAP/WTLS; add OIDs that were still missing.
10824 *Sheueling Chang Shantz and Douglas Stebila (Sun Microsystems Laboratories)*
10826 * Extend the EC library for elliptic curves over binary fields
10827 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
10830 EC_GF2m_simple_method
10834 EC_GROUP_new_curve_GF2m
10835 EC_GROUP_set_curve_GF2m
10836 EC_GROUP_get_curve_GF2m
10837 EC_POINT_set_affine_coordinates_GF2m
10838 EC_POINT_get_affine_coordinates_GF2m
10839 EC_POINT_set_compressed_coordinates_GF2m
10841 Point compression for binary fields is disabled by default for
10842 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
10845 As binary polynomials are represented as BIGNUMs, various members
10846 of the EC_GROUP and EC_POINT data structures can be shared
10847 between the implementations for prime fields and binary fields;
10848 the above `..._GF2m functions` (except for EX_GROUP_new_curve_GF2m)
10849 are essentially identical to their `..._GFp` counterparts.
10850 (For simplicity, the `..._GFp` prefix has been dropped from
10851 various internal method names.)
10853 An internal 'field_div' method (similar to 'field_mul' and
10854 'field_sqr') has been added; this is used only for binary fields.
10856 *Sheueling Chang Shantz and Douglas Stebila (Sun Microsystems Laboratories)*
10858 * Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
10859 through methods ('mul', 'precompute_mult').
10861 The generic implementations (now internally called 'ec_wNAF_mul'
10862 and 'ec_wNAF_precomputed_mult') remain the default if these
10863 methods are undefined.
10865 *Sheueling Chang Shantz and Douglas Stebila (Sun Microsystems Laboratories)*
10867 * New function EC_GROUP_get_degree, which is defined through
10868 EC_METHOD. For curves over prime fields, this returns the bit
10869 length of the modulus.
10871 *Sheueling Chang Shantz and Douglas Stebila (Sun Microsystems Laboratories)*
10873 * New functions EC_GROUP_dup, EC_POINT_dup.
10874 (These simply call ..._new and ..._copy).
10876 *Sheueling Chang Shantz and Douglas Stebila (Sun Microsystems Laboratories)*
10878 * Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
10879 Polynomials are represented as BIGNUMs (where the sign bit is not
10880 used) in the following functions [macros]:
10883 BN_GF2m_sub [= BN_GF2m_add]
10884 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
10885 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
10886 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
10888 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
10889 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
10890 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
10891 BN_GF2m_cmp [= BN_ucmp]
10893 (Note that only the 'mod' functions are actually for fields GF(2^m).
10894 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
10896 For some functions, an the irreducible polynomial defining a
10897 field can be given as an 'unsigned int[]' with strictly
10898 decreasing elements giving the indices of those bits that are set;
10899 i.e., p[] represents the polynomial
10900 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
10902 p[0] > p[1] > ... > p[k] = 0.
10903 This applies to the following functions:
10906 BN_GF2m_mod_mul_arr
10907 BN_GF2m_mod_sqr_arr
10908 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
10909 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
10910 BN_GF2m_mod_exp_arr
10911 BN_GF2m_mod_sqrt_arr
10912 BN_GF2m_mod_solve_quad_arr
10916 Conversion can be performed by the following functions:
10921 bntest.c has additional tests for binary polynomial arithmetic.
10923 Two implementations for BN_GF2m_mod_div() are available.
10924 The default algorithm simply uses BN_GF2m_mod_inv() and
10925 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
10926 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
10927 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
10929 *Sheueling Chang Shantz and Douglas Stebila (Sun Microsystems Laboratories)*
10931 * Add new error code 'ERR_R_DISABLED' that can be used when some
10932 functionality is disabled at compile-time.
10934 *Douglas Stebila <douglas.stebila@sun.com>*
10936 * Change default behaviour of 'openssl asn1parse' so that more
10937 information is visible when viewing, e.g., a certificate:
10939 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
10940 mode the content of non-printable OCTET STRINGs is output in a
10941 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
10942 avoid the appearance of a printable string.
10944 *Nils Larsch <nla@trustcenter.de>*
10946 * Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
10948 EC_GROUP_set_asn1_flag()
10949 EC_GROUP_get_asn1_flag()
10950 EC_GROUP_set_point_conversion_form()
10951 EC_GROUP_get_point_conversion_form()
10952 These control ASN1 encoding details:
10953 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
10954 has been set to OPENSSL_EC_NAMED_CURVE.
10955 - Points are encoded in uncompressed form by default; options for
10956 asn1_for are as for point2oct, namely
10957 POINT_CONVERSION_COMPRESSED
10958 POINT_CONVERSION_UNCOMPRESSED
10959 POINT_CONVERSION_HYBRID
10961 Also add 'seed' and 'seed_len' members to EC_GROUP with access
10963 EC_GROUP_set_seed()
10964 EC_GROUP_get0_seed()
10965 EC_GROUP_get_seed_len()
10966 This is used only for ASN1 purposes (so far).
10968 *Nils Larsch <nla@trustcenter.de>*
10970 * Add 'field_type' member to EC_METHOD, which holds the NID
10971 of the appropriate field type OID. The new function
10972 EC_METHOD_get_field_type() returns this value.
10974 *Nils Larsch <nla@trustcenter.de>*
10977 EC_POINT_point2bn()
10978 EC_POINT_bn2point()
10979 EC_POINT_point2hex()
10980 EC_POINT_hex2point()
10981 providing useful interfaces to EC_POINT_point2oct() and
10982 EC_POINT_oct2point().
10984 *Nils Larsch <nla@trustcenter.de>*
10986 * Change internals of the EC library so that the functions
10987 EC_GROUP_set_generator()
10988 EC_GROUP_get_generator()
10989 EC_GROUP_get_order()
10990 EC_GROUP_get_cofactor()
10991 are implemented directly in crypto/ec/ec_lib.c and not dispatched
10992 to methods, which would lead to unnecessary code duplication when
10993 adding different types of curves.
10995 *Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller*
10997 * Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
10998 arithmetic, and such that modified wNAFs are generated
10999 (which avoid length expansion in many cases).
11003 * Add a function EC_GROUP_check_discriminant() (defined via
11004 EC_METHOD) that verifies that the curve discriminant is non-zero.
11006 Add a function EC_GROUP_check() that makes some sanity tests
11007 on a EC_GROUP, its generator and order. This includes
11008 EC_GROUP_check_discriminant().
11010 *Nils Larsch <nla@trustcenter.de>*
11012 * Add ECDSA in new directory crypto/ecdsa/.
11014 Add applications 'openssl ecparam' and 'openssl ecdsa'
11015 (these are based on 'openssl dsaparam' and 'openssl dsa').
11017 ECDSA support is also included in various other files across the
11018 library. Most notably,
11019 - 'openssl req' now has a '-newkey ecdsa:file' option;
11020 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
11021 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
11022 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
11023 them suitable for ECDSA where domain parameters must be
11024 extracted before the specific public key;
11025 - ECDSA engine support has been added.
11027 *Nils Larsch <nla@trustcenter.de>*
11029 * Include some named elliptic curves, and add OIDs from X9.62,
11030 SECG, and WAP/WTLS. Each curve can be obtained from the new
11032 EC_GROUP_new_by_curve_name(),
11033 and the list of available named curves can be obtained with
11034 EC_get_builtin_curves().
11035 Also add a 'curve_name' member to EC_GROUP objects, which can be
11037 EC_GROUP_set_curve_name()
11038 EC_GROUP_get_curve_name()
11040 *Nils Larsch <larsch@trustcenter.de, Bodo Moeller*
11042 * Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
11043 was actually never needed) and in BN_mul(). The removal in BN_mul()
11044 required a small change in bn_mul_part_recursive() and the addition
11045 of the functions bn_cmp_part_words(), bn_sub_part_words() and
11046 bn_add_part_words(), which do the same thing as bn_cmp_words(),
11047 bn_sub_words() and bn_add_words() except they take arrays with
11052 ### Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
11054 * Cleanse PEM buffers before freeing them since they may contain
11057 *Benjamin Bennett <ben@psc.edu>*
11059 * Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
11060 a ciphersuite string such as "DEFAULT:RSA" cannot enable
11061 authentication-only ciphersuites.
11065 * Since AES128 and AES256 share a single mask bit in the logic of
11066 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
11067 kludge to work properly if AES128 is available and AES256 isn't.
11071 * Expand security boundary to match 1.1.1 module.
11075 * Remove redundant features: hash file source, editing of test vectors
11076 modify fipsld to use external fips_premain.c signature.
11080 * New perl script mkfipsscr.pl to create shell scripts or batch files to
11081 run algorithm test programs.
11085 * Make algorithm test programs more tolerant of whitespace.
11089 * Have SSL/TLS server implementation tolerate "mismatched" record
11090 protocol version while receiving ClientHello even if the
11091 ClientHello is fragmented. (The server can't insist on the
11092 particular protocol version it has chosen before the ServerHello
11093 message has informed the client about his choice.)
11097 * Load error codes if they are not already present instead of using a
11098 static variable. This allows them to be cleanly unloaded and reloaded.
11102 ### Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
11104 * Introduce limits to prevent malicious keys being able to
11105 cause a denial of service. ([CVE-2006-2940])
11107 *Steve Henson, Bodo Moeller*
11109 * Fix ASN.1 parsing of certain invalid structures that can result
11110 in a denial of service. ([CVE-2006-2937]) [Steve Henson]
11112 * Fix buffer overflow in SSL_get_shared_ciphers() function.
11113 ([CVE-2006-3738]) [Tavis Ormandy and Will Drewry, Google Security Team]
11115 * Fix SSL client code which could crash if connecting to a
11116 malicious SSLv2 server. ([CVE-2006-4343])
11118 *Tavis Ormandy and Will Drewry, Google Security Team*
11120 * Change ciphersuite string processing so that an explicit
11121 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
11122 will no longer include "AES128-SHA"), and any other similar
11123 ciphersuite (same bitmap) from *other* protocol versions (so that
11124 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
11125 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
11126 changes from 0.9.8b and 0.9.8d.
11130 ### Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
11132 * Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
11133 ([CVE-2006-4339]) [Ben Laurie and Google Security Team]
11135 * Change the Unix randomness entropy gathering to use poll() when
11136 possible instead of select(), since the latter has some
11137 undesirable limitations.
11139 *Darryl Miles via Richard Levitte and Bodo Moeller*
11141 * Disable rogue ciphersuites:
11143 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
11144 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
11145 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
11147 The latter two were purportedly from
11148 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
11151 Also deactivate the remaining ciphersuites from
11152 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
11153 unofficial, and the ID has long expired.
11157 * Fix RSA blinding Heisenbug (problems sometimes occurred on
11158 dual-core machines) and other potential thread-safety issues.
11162 ### Changes between 0.9.7i and 0.9.7j [04 May 2006]
11164 * Adapt fipsld and the build system to link against the validated FIPS
11165 module in FIPS mode.
11169 * Fixes for VC++ 2005 build under Windows.
11173 * Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
11174 from a Windows bash shell such as MSYS. It is autodetected from the
11175 "config" script when run from a VC++ environment. Modify standard VC++
11176 build to use fipscanister.o from the GNU make build.
11180 ### Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
11182 * Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
11183 The value now differs depending on if you build for FIPS or not.
11184 BEWARE! A program linked with a shared FIPSed libcrypto can't be
11185 safely run with a non-FIPSed libcrypto, as it may crash because of
11186 the difference induced by this change.
11190 ### Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
11192 * Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
11193 (part of SSL_OP_ALL). This option used to disable the
11194 countermeasure against man-in-the-middle protocol-version
11195 rollback in the SSL 2.0 server implementation, which is a bad
11196 idea. ([CVE-2005-2969])
11198 *Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
11199 for Information Security, National Institute of Advanced Industrial
11200 Science and Technology [AIST, Japan)]*
11202 * Minimal support for X9.31 signatures and PSS padding modes. This is
11203 mainly for FIPS compliance and not fully integrated at this stage.
11207 * For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
11208 the exponentiation using a fixed-length exponent. (Otherwise,
11209 the information leaked through timing could expose the secret key
11210 after many signatures; cf. Bleichenbacher's attack on DSA with
11215 * Make a new fixed-window mod_exp implementation the default for
11216 RSA, DSA, and DH private-key operations so that the sequence of
11217 squares and multiplies and the memory access pattern are
11218 independent of the particular secret key. This will mitigate
11219 cache-timing and potential related attacks.
11221 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
11222 and this is automatically used by BN_mod_exp_mont() if the new flag
11223 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
11224 will use this BN flag for private exponents unless the flag
11225 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
11226 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
11228 *Matthew D Wood (Intel Corp), with some changes by Bodo Moeller*
11230 * Change the client implementation for SSLv23_method() and
11231 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
11232 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
11233 (Previously, the SSL 2.0 backwards compatible Client Hello
11234 message format would be used even with SSL_OP_NO_SSLv2.)
11238 * Add support for smime-type MIME parameter in S/MIME messages which some
11243 * New function BN_MONT_CTX_set_locked() to set montgomery parameters in
11244 a threadsafe manner. Modify rsa code to use new function and add calls
11245 to dsa and dh code (which had race conditions before).
11249 * Include the fixed error library code in the C error file definitions
11250 instead of fixing them up at runtime. This keeps the error code
11251 structures constant.
11255 ### Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
11257 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
11260 * Fixes for newer kerberos headers. NB: the casts are needed because
11261 the 'length' field is signed on one version and unsigned on another
11262 with no (?) obvious way to tell the difference, without these VC++
11263 complains. Also the "definition" of FAR (blank) is no longer included
11264 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
11265 some needed definitions.
11269 * Undo Cygwin change.
11273 * Added support for proxy certificates according to RFC 3820.
11274 Because they may be a security thread to unaware applications,
11275 they must be explicitly allowed in run-time. See
11276 docs/HOWTO/proxy_certificates.txt for further information.
11280 ### Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
11282 * Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
11283 server and client random values. Previously
11284 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
11285 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
11287 This change has negligible security impact because:
11289 1. Server and client random values still have 24 bytes of pseudo random
11292 2. Server and client random values are sent in the clear in the initial
11295 3. The master secret is derived using the premaster secret (48 bytes in
11296 size for static RSA ciphersuites) as well as client server and random
11299 The OpenSSL team would like to thank the UK NISCC for bringing this issue
11302 *Stephen Henson, reported by UK NISCC*
11304 * Use Windows randomness collection on Cygwin.
11308 * Fix hang in EGD/PRNGD query when communication socket is closed
11309 prematurely by EGD/PRNGD.
11311 *Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014*
11313 * Prompt for pass phrases when appropriate for PKCS12 input format.
11317 * Back-port of selected performance improvements from development
11318 branch, as well as improved support for PowerPC platforms.
11322 * Add lots of checks for memory allocation failure, error codes to indicate
11323 failure and freeing up memory if a failure occurs.
11325 *Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson*
11327 * Add new -passin argument to dgst.
11331 * Perform some character comparisons of different types in X509_NAME_cmp:
11332 this is needed for some certificates that re-encode DNs into UTF8Strings
11333 (in violation of RFC3280) and can't or won't issue name rollover
11338 * Make an explicit check during certificate validation to see that
11339 the CA setting in each certificate on the chain is correct. As a
11340 side effect always do the following basic checks on extensions,
11341 not just when there's an associated purpose to the check:
11343 - if there is an unhandled critical extension (unless the user
11344 has chosen to ignore this fault)
11345 - if the path length has been exceeded (if one is set at all)
11346 - that certain extensions fit the associated purpose (if one has
11351 ### Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
11353 * Avoid a race condition when CRLs are checked in a multi threaded
11354 environment. This would happen due to the reordering of the revoked
11355 entries during signature checking and serial number lookup. Now the
11356 encoding is cached and the serial number sort performed under a lock.
11357 Add new STACK function sk_is_sorted().
11361 * Add Delta CRL to the extension code.
11365 * Various fixes to s3_pkt.c so alerts are sent properly.
11367 *David Holmes <d.holmes@f5.com>*
11369 * Reduce the chances of duplicate issuer name and serial numbers (in
11370 violation of RFC3280) using the OpenSSL certificate creation utilities.
11371 This is done by creating a random 64 bit value for the initial serial
11372 number when a serial number file is created or when a self signed
11373 certificate is created using 'openssl req -x509'. The initial serial
11374 number file is created using 'openssl x509 -next_serial' in CA.pl
11375 rather than being initialized to 1.
11379 ### Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
11381 * Fix null-pointer assignment in do_change_cipher_spec() revealed
11382 by using the Codenomicon TLS Test Tool ([CVE-2004-0079])
11384 *Joe Orton, Steve Henson*
11386 * Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
11389 *Joe Orton, Steve Henson*
11391 * Make it possible to have multiple active certificates with the same
11392 subject in the CA index file. This is done only if the keyword
11393 'unique_subject' is set to 'no' in the main CA section (default
11394 if 'CA_default') of the configuration file. The value is saved
11395 with the database itself in a separate index attribute file,
11396 named like the index file with '.attr' appended to the name.
11400 * X509 verify fixes. Disable broken certificate workarounds when
11401 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
11402 keyUsage extension present. Don't accept CRLs with unhandled critical
11403 extensions: since verify currently doesn't process CRL extensions this
11404 rejects a CRL with *any* critical extensions. Add new verify error codes
11409 * When creating an OCSP nonce use an OCTET STRING inside the extnValue.
11410 A clarification of RFC2560 will require the use of OCTET STRINGs and
11411 some implementations cannot handle the current raw format. Since OpenSSL
11412 copies and compares OCSP nonces as opaque blobs without any attempt at
11413 parsing them this should not create any compatibility issues.
11417 * New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
11418 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
11419 this HMAC (and other) operations are several times slower than OpenSSL
11424 * Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
11426 *Peter Sylvester <Peter.Sylvester@EdelWeb.fr>*
11428 * Use the correct content when signing type "other".
11432 ### Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
11434 * Fix various bugs revealed by running the NISCC test suite:
11436 Stop out of bounds reads in the ASN1 code when presented with
11437 invalid tags (CVE-2003-0543 and CVE-2003-0544).
11439 Free up ASN1_TYPE correctly if ANY type is invalid ([CVE-2003-0545]).
11441 If verify callback ignores invalid public key errors don't try to check
11442 certificate signature with the NULL public key.
11446 * New -ignore_err option in ocsp application to stop the server
11447 exiting on the first error in a request.
11451 * In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
11452 if the server requested one: as stated in TLS 1.0 and SSL 3.0
11457 * In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
11458 extra data after the compression methods not only for TLS 1.0
11459 but also for SSL 3.0 (as required by the specification).
11461 *Bodo Moeller; problem pointed out by Matthias Loepfe*
11463 * Change X509_certificate_type() to mark the key as exported/exportable
11464 when it's 512 *bits* long, not 512 bytes.
11468 * Change AES_cbc_encrypt() so it outputs exact multiple of
11469 blocks during encryption.
11473 * Various fixes to base64 BIO and non blocking I/O. On write
11474 flushes were not handled properly if the BIO retried. On read
11475 data was not being buffered properly and had various logic bugs.
11476 This also affects blocking I/O when the data being decoded is a
11481 * Various S/MIME bugfixes and compatibility changes:
11482 output correct application/pkcs7 MIME type if
11483 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
11484 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
11485 of files as .eml work). Correctly handle very long lines in MIME
11490 ### Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
11492 * Countermeasure against the Klima-Pokorny-Rosa extension of
11493 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
11494 a protocol version number mismatch like a decryption error
11495 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
11499 * Turn on RSA blinding by default in the default implementation
11500 to avoid a timing attack. Applications that don't want it can call
11501 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
11502 They would be ill-advised to do so in most cases.
11504 *Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller*
11506 * Change RSA blinding code so that it works when the PRNG is not
11507 seeded (in this case, the secret RSA exponent is abused as
11508 an unpredictable seed -- if it is not unpredictable, there
11509 is no point in blinding anyway). Make RSA blinding thread-safe
11510 by remembering the creator's thread ID in rsa->blinding and
11511 having all other threads use local one-time blinding factors
11512 (this requires more computation than sharing rsa->blinding, but
11513 avoids excessive locking; and if an RSA object is not shared
11514 between threads, blinding will still be very fast).
11518 * Fixed a typo bug that would cause ENGINE_set_default() to set an
11519 ENGINE as defaults for all supported algorithms irrespective of
11520 the 'flags' parameter. 'flags' is now honoured, so applications
11521 should make sure they are passing it correctly.
11525 * Target "mingw" now allows native Windows code to be generated in
11526 the Cygwin environment as well as with the MinGW compiler.
11530 ### Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
11532 * In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
11533 via timing by performing a MAC computation even if incorrect
11534 block cipher padding has been found. This is a countermeasure
11535 against active attacks where the attacker has to distinguish
11536 between bad padding and a MAC verification error. ([CVE-2003-0078])
11538 *Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
11539 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
11540 Martin Vuagnoux (EPFL, Ilion)*
11542 * Make the no-err option work as intended. The intention with no-err
11543 is not to have the whole error stack handling routines removed from
11544 libcrypto, it's only intended to remove all the function name and
11545 reason texts, thereby removing some of the footprint that may not
11546 be interesting if those errors aren't displayed anyway.
11548 NOTE: it's still possible for any application or module to have its
11549 own set of error texts inserted. The routines are there, just not
11550 used by default when no-err is given.
11554 * Add support for FreeBSD on IA64.
11556 *dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454*
11558 * Adjust DES_cbc_cksum() so it returns the same value as the MIT
11559 Kerberos function mit_des_cbc_cksum(). Before this change,
11560 the value returned by DES_cbc_cksum() was like the one from
11561 mit_des_cbc_cksum(), except the bytes were swapped.
11563 *Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte*
11565 * Allow an application to disable the automatic SSL chain building.
11566 Before this a rather primitive chain build was always performed in
11567 ssl3_output_cert_chain(): an application had no way to send the
11568 correct chain if the automatic operation produced an incorrect result.
11570 Now the chain builder is disabled if either:
11572 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
11574 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
11576 The reasoning behind this is that an application would not want the
11577 auto chain building to take place if extra chain certificates are
11578 present and it might also want a means of sending no additional
11579 certificates (for example the chain has two certificates and the
11584 * Add the possibility to build without the ENGINE framework.
11586 *Steven Reddie <smr@essemer.com.au> via Richard Levitte*
11588 * Under Win32 gmtime() can return NULL: check return value in
11589 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
11593 * DSA routines: under certain error conditions uninitialized BN objects
11594 could be freed. Solution: make sure initialization is performed early
11595 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
11596 Nils Larsch <nla@trustcenter.de> via PR#459)
11600 * Another fix for SSLv2 session ID handling: the session ID was incorrectly
11601 checked on reconnect on the client side, therefore session resumption
11602 could still fail with a "ssl session id is different" error. This
11603 behaviour is masked when SSL_OP_ALL is used due to
11604 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
11605 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
11606 followup to PR #377.
11610 * IA-32 assembler support enhancements: unified ELF targets, support
11611 for SCO/Caldera platforms, fix for Cygwin shared build.
11615 * Add support for FreeBSD on sparc64. As a consequence, support for
11616 FreeBSD on non-x86 processors is separate from x86 processors on
11617 the config script, much like the NetBSD support.
11619 *Richard Levitte & Kris Kennaway <kris@obsecurity.org>*
11621 ### Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
11623 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
11626 * Fix session ID handling in SSLv2 client code: the SERVER FINISHED
11627 code (06) was taken as the first octet of the session ID and the last
11628 octet was ignored consequently. As a result SSLv2 client side session
11629 caching could not have worked due to the session ID mismatch between
11631 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
11636 * Change the declaration of needed Kerberos libraries to use EX_LIBS
11637 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
11642 * The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
11643 seems that in spite of existing for more than a year, many application
11644 author have done nothing to provide the necessary callbacks, which
11645 means that this particular engine will not work properly anywhere.
11646 This is a very unfortunate situation which forces us, in the name
11647 of usability, to give the hw_ncipher.c a static lock, which is part
11649 NOTE: This is for the 0.9.7 series ONLY. This hack will never
11650 appear in 0.9.8 or later. We EXPECT application authors to have
11651 dealt properly with this when 0.9.8 is released (unless we actually
11652 make such changes in the libcrypto locking code that changes will
11653 have to be made anyway).
11657 * In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
11658 octets have been read, EOF or an error occurs. Without this change
11659 some truncated ASN1 structures will not produce an error.
11663 * Disable Heimdal support, since it hasn't been fully implemented.
11664 Still give the possibility to force the use of Heimdal, but with
11665 warnings and a request that patches get sent to openssl-dev.
11669 * Add the VC-CE target, introduce the WINCE sysname, and add
11670 INSTALL.WCE and appropriate conditionals to make it build.
11672 *Steven Reddie <smr@essemer.com.au> via Richard Levitte*
11674 * Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
11675 cygssl-x.y.z.dll, where x, y and z are the major, minor and
11676 edit numbers of the version.
11678 *Corinna Vinschen <vinschen@redhat.com> and Richard Levitte*
11680 * Introduce safe string copy and catenation functions
11681 (BUF_strlcpy() and BUF_strlcat()).
11683 *Ben Laurie (CHATS) and Richard Levitte*
11685 * Avoid using fixed-size buffers for one-line DNs.
11687 *Ben Laurie (CHATS)*
11689 * Add BUF_MEM_grow_clean() to avoid information leakage when
11690 resizing buffers containing secrets, and use where appropriate.
11692 *Ben Laurie (CHATS)*
11694 * Avoid using fixed size buffers for configuration file location.
11696 *Ben Laurie (CHATS)*
11698 * Avoid filename truncation for various CA files.
11700 *Ben Laurie (CHATS)*
11702 * Use sizeof in preference to magic numbers.
11704 *Ben Laurie (CHATS)*
11706 * Avoid filename truncation in cert requests.
11708 *Ben Laurie (CHATS)*
11710 * Add assertions to check for (supposedly impossible) buffer
11713 *Ben Laurie (CHATS)*
11715 * Don't cache truncated DNS entries in the local cache (this could
11716 potentially lead to a spoofing attack).
11718 *Ben Laurie (CHATS)*
11720 * Fix various buffers to be large enough for hex/decimal
11721 representations in a platform independent manner.
11723 *Ben Laurie (CHATS)*
11725 * Add CRYPTO_realloc_clean() to avoid information leakage when
11726 resizing buffers containing secrets, and use where appropriate.
11728 *Ben Laurie (CHATS)*
11730 * Add BIO_indent() to avoid much slightly worrying code to do
11733 *Ben Laurie (CHATS)*
11735 * Convert sprintf()/BIO_puts() to BIO_printf().
11737 *Ben Laurie (CHATS)*
11739 * buffer_gets() could terminate with the buffer only half
11742 *Ben Laurie (CHATS)*
11744 * Add assertions to prevent user-supplied crypto functions from
11745 overflowing internal buffers by having large block sizes, etc.
11747 *Ben Laurie (CHATS)*
11749 * New OPENSSL_assert() macro (similar to assert(), but enabled
11752 *Ben Laurie (CHATS)*
11754 * Eliminate unused copy of key in RC4.
11756 *Ben Laurie (CHATS)*
11758 * Eliminate unused and incorrectly sized buffers for IV in pem.h.
11760 *Ben Laurie (CHATS)*
11762 * Fix off-by-one error in EGD path.
11764 *Ben Laurie (CHATS)*
11766 * If RANDFILE path is too long, ignore instead of truncating.
11768 *Ben Laurie (CHATS)*
11770 * Eliminate unused and incorrectly sized X.509 structure
11773 *Ben Laurie (CHATS)*
11775 * Eliminate unused and dangerous function knumber().
11777 *Ben Laurie (CHATS)*
11779 * Eliminate unused and dangerous structure, KSSL_ERR.
11781 *Ben Laurie (CHATS)*
11783 * Protect against overlong session ID context length in an encoded
11784 session object. Since these are local, this does not appear to be
11787 *Ben Laurie (CHATS)*
11789 * Change from security patch (see 0.9.6e below) that did not affect
11790 the 0.9.6 release series:
11792 Remote buffer overflow in SSL3 protocol - an attacker could
11793 supply an oversized master key in Kerberos-enabled versions.
11796 *Ben Laurie (CHATS)*
11798 * Change the SSL kerb5 codes to match RFC 2712.
11802 * Make -nameopt work fully for req and add -reqopt switch.
11804 *Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson*
11806 * The "block size" for block ciphers in CFB and OFB mode should be 1.
11808 *Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>*
11810 * Make sure tests can be performed even if the corresponding algorithms
11811 have been removed entirely. This was also the last step to make
11812 OpenSSL compilable with DJGPP under all reasonable conditions.
11814 *Richard Levitte, Doug Kaufman <dkaufman@rahul.net>*
11816 * Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
11817 to allow version independent disabling of normally unselected ciphers,
11818 which may be activated as a side-effect of selecting a single cipher.
11820 (E.g., cipher list string "RSA" enables ciphersuites that are left
11821 out of "ALL" because they do not provide symmetric encryption.
11822 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
11824 *Lutz Jaenicke, Bodo Moeller*
11826 * Add appropriate support for separate platform-dependent build
11827 directories. The recommended way to make a platform-dependent
11828 build directory is the following (tested on Linux), maybe with
11831 # Place yourself outside of the OpenSSL source tree. In
11832 # this example, the environment variable OPENSSL_SOURCE
11833 # is assumed to contain the absolute OpenSSL source directory.
11834 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
11835 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
11836 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
11837 mkdir -p `dirname $F`
11838 ln -s $OPENSSL_SOURCE/$F $F
11841 To be absolutely sure not to disturb the source tree, a "make clean"
11842 is a good thing. If it isn't successful, don't worry about it,
11843 it probably means the source directory is very clean.
11847 * Make sure any ENGINE control commands make local copies of string
11848 pointers passed to them whenever necessary. Otherwise it is possible
11849 the caller may have overwritten (or deallocated) the original string
11850 data when a later ENGINE operation tries to use the stored values.
11852 *Götz Babin-Ebell <babinebell@trustcenter.de>*
11854 * Improve diagnostics in file reading and command-line digests.
11856 *Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>*
11858 * Add AES modes CFB and OFB to the object database. Correct an
11859 error in AES-CFB decryption.
11863 * Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
11864 allows existing EVP_CIPHER_CTX structures to be reused after
11865 calling `EVP_*Final()`. This behaviour is used by encryption
11866 BIOs and some applications. This has the side effect that
11867 applications must explicitly clean up cipher contexts with
11868 EVP_CIPHER_CTX_cleanup() or they will leak memory.
11872 * Check the values of dna and dnb in bn_mul_recursive before calling
11873 bn_mul_comba (a non zero value means the a or b arrays do not contain
11874 n2 elements) and fallback to bn_mul_normal if either is not zero.
11878 * Fix escaping of non-ASCII characters when using the -subj option
11879 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
11883 * Make object definitions compliant to LDAP (RFC2256): SN is the short
11884 form for "surname", serialNumber has no short form.
11885 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
11886 therefore remove "mail" short name for "internet 7".
11887 The OID for unique identifiers in X509 certificates is
11888 x500UniqueIdentifier, not uniqueIdentifier.
11889 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
11893 * Add an "init" command to the ENGINE config module and auto initialize
11894 ENGINEs. Without any "init" command the ENGINE will be initialized
11895 after all ctrl commands have been executed on it. If init=1 the
11896 ENGINE is initialized at that point (ctrls before that point are run
11897 on the uninitialized ENGINE and after on the initialized one). If
11898 init=0 then the ENGINE will not be initialized at all.
11902 * Fix the 'app_verify_callback' interface so that the user-defined
11903 argument is actually passed to the callback: In the
11904 SSL_CTX_set_cert_verify_callback() prototype, the callback
11905 declaration has been changed from
11908 int (*cb)(X509_STORE_CTX *,void *);
11909 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
11910 i=s->ctx->app_verify_callback(&ctx)
11911 has been changed into
11912 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
11914 To update applications using SSL_CTX_set_cert_verify_callback(),
11915 a dummy argument can be added to their callback functions.
11917 *D. K. Smetters <smetters@parc.xerox.com>*
11919 * Added the '4758cca' ENGINE to support IBM 4758 cards.
11921 *Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe*
11923 * Add and OPENSSL_LOAD_CONF define which will cause
11924 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
11925 This allows older applications to transparently support certain
11926 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
11927 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
11928 load the config file and OPENSSL_add_all_algorithms_conf() which will
11929 always load it have also been added.
11933 * Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
11934 Adjust NIDs and EVP layer.
11936 *Stephen Sprunk <stephen@sprunk.org> and Richard Levitte*
11938 * Config modules support in openssl utility.
11940 Most commands now load modules from the config file,
11941 though in a few (such as version) this isn't done
11942 because it couldn't be used for anything.
11944 In the case of ca and req the config file used is
11945 the same as the utility itself: that is the -config
11946 command line option can be used to specify an
11951 * Move default behaviour from OPENSSL_config(). If appname is NULL
11952 use "openssl_conf" if filename is NULL use default openssl config file.
11956 * Add an argument to OPENSSL_config() to allow the use of an alternative
11957 config section name. Add a new flag to tolerate a missing config file
11958 and move code to CONF_modules_load_file().
11962 * Support for crypto accelerator cards from Accelerated Encryption
11963 Processing, www.aep.ie. (Use engine 'aep')
11964 The support was copied from 0.9.6c [engine] and adapted/corrected
11965 to work with the new engine framework.
11967 *AEP Inc. and Richard Levitte*
11969 * Support for SureWare crypto accelerator cards from Baltimore
11970 Technologies. (Use engine 'sureware')
11971 The support was copied from 0.9.6c [engine] and adapted
11972 to work with the new engine framework.
11976 * Have the CHIL engine fork-safe (as defined by nCipher) and actually
11977 make the newer ENGINE framework commands for the CHIL engine work.
11979 *Toomas Kiisk <vix@cyber.ee> and Richard Levitte*
11981 * Make it possible to produce shared libraries on ReliantUNIX.
11983 *Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte*
11985 * Add the configuration target debug-linux-ppro.
11986 Make 'openssl rsa' use the general key loading routines
11987 implemented in `apps.c`, and make those routines able to
11988 handle the key format FORMAT_NETSCAPE and the variant
11991 *Toomas Kiisk <vix@cyber.ee> via Richard Levitte*
11993 * Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
11995 *Toomas Kiisk <vix@cyber.ee> via Richard Levitte*
11997 * Add -keyform to rsautl, and document -engine.
11999 *Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>*
12001 * Change BIO_new_file (crypto/bio/bss_file.c) to use new
12002 BIO_R_NO_SUCH_FILE error code rather than the generic
12003 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
12007 * Add new functions
12008 ERR_peek_last_error
12009 ERR_peek_last_error_line
12010 ERR_peek_last_error_line_data.
12011 These are similar to
12013 ERR_peek_error_line
12014 ERR_peek_error_line_data,
12015 but report on the latest error recorded rather than the first one
12016 still in the error queue.
12018 *Ben Laurie, Bodo Moeller*
12020 * default_algorithms option in ENGINE config module. This allows things
12022 default_algorithms = ALL
12023 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
12027 * Preliminary ENGINE config module.
12031 * New experimental application configuration code.
12035 * Change the AES code to follow the same name structure as all other
12036 symmetric ciphers, and behave the same way. Move everything to
12037 the directory crypto/aes, thereby obsoleting crypto/rijndael.
12039 *Stephen Sprunk <stephen@sprunk.org> and Richard Levitte*
12041 * SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
12043 *Ben Laurie and Theo de Raadt*
12045 * Add option to output public keys in req command.
12047 *Massimiliano Pala madwolf@openca.org*
12049 * Use wNAFs in EC_POINTs_mul() for improved efficiency
12050 (up to about 10% better than before for P-192 and P-224).
12054 * New functions/macros
12056 SSL_CTX_set_msg_callback(ctx, cb)
12057 SSL_CTX_set_msg_callback_arg(ctx, arg)
12058 SSL_set_msg_callback(ssl, cb)
12059 SSL_set_msg_callback_arg(ssl, arg)
12061 to request calling a callback function
12063 void cb(int write_p, int version, int content_type,
12064 const void *buf, size_t len, SSL *ssl, void *arg)
12066 whenever a protocol message has been completely received
12067 (write_p == 0) or sent (write_p == 1). Here 'version' is the
12068 protocol version according to which the SSL library interprets
12069 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
12070 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
12071 the content type as defined in the SSL 3.0/TLS 1.0 protocol
12072 specification (change_cipher_spec(20), alert(21), handshake(22)).
12073 'buf' and 'len' point to the actual message, 'ssl' to the
12074 SSL object, and 'arg' is the application-defined value set by
12075 SSL[_CTX]_set_msg_callback_arg().
12077 'openssl s_client' and 'openssl s_server' have new '-msg' options
12078 to enable a callback that displays all protocol messages.
12082 * Change the shared library support so shared libraries are built as
12083 soon as the corresponding static library is finished, and thereby get
12084 openssl and the test programs linked against the shared library.
12085 This still only happens when the keyword "shard" has been given to
12086 the configuration scripts.
12088 NOTE: shared library support is still an experimental thing, and
12089 backward binary compatibility is still not guaranteed.
12091 *"Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte*
12093 * Add support for Subject Information Access extension.
12095 *Peter Sylvester <Peter.Sylvester@EdelWeb.fr>*
12097 * Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
12098 additional bytes when new memory had to be allocated, not just
12099 when reusing an existing buffer.
12103 * New command line and configuration option 'utf8' for the req command.
12104 This allows field values to be specified as UTF8 strings.
12108 * Add -multi and -mr options to "openssl speed" - giving multiple parallel
12109 runs for the former and machine-readable output for the latter.
12113 * Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
12114 of the e-mail address in the DN (i.e., it will go into a certificate
12115 extension only). The new configuration file option 'email_in_dn = no'
12116 has the same effect.
12118 *Massimiliano Pala madwolf@openca.org*
12120 * Change all functions with names starting with `des_` to be starting
12121 with `DES_` instead. Add wrappers that are compatible with libdes,
12122 but are named `_ossl_old_des_*`. Finally, add macros that map the
12123 `des_*` symbols to the corresponding `_ossl_old_des_*` if libdes
12124 compatibility is desired. If OpenSSL 0.9.6c compatibility is
12125 desired, the `des_*` symbols will be mapped to `DES_*`, with one
12128 Since we provide two compatibility mappings, the user needs to
12129 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
12130 compatibility is desired. The default (i.e., when that macro
12131 isn't defined) is OpenSSL 0.9.6c compatibility.
12133 There are also macros that enable and disable the support of old
12134 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
12135 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
12136 are defined, the default will apply: to support the old des routines.
12138 In either case, one must include openssl/des.h to get the correct
12139 definitions. Do not try to just include openssl/des_old.h, that
12142 NOTE: This is a major break of an old API into a new one. Software
12143 authors are encouraged to switch to the `DES_` style functions. Some
12144 time in the future, des_old.h and the libdes compatibility functions
12145 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
12146 default), and then completely removed.
12150 * Test for certificates which contain unsupported critical extensions.
12151 If such a certificate is found during a verify operation it is
12152 rejected by default: this behaviour can be overridden by either
12153 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
12154 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
12155 X509_supported_extension() has also been added which returns 1 if a
12156 particular extension is supported.
12160 * Modify the behaviour of EVP cipher functions in similar way to digests
12161 to retain compatibility with existing code.
12165 * Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
12166 compatibility with existing code. In particular the 'ctx' parameter does
12167 not have to be to be initialized before the call to EVP_DigestInit() and
12168 it is tidied up after a call to EVP_DigestFinal(). New function
12169 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
12170 EVP_MD_CTX_copy() changed to not require the destination to be
12171 initialized valid and new function EVP_MD_CTX_copy_ex() added which
12172 requires the destination to be valid.
12174 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
12175 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
12179 * Change ssl3_get_message (ssl/s3_both.c) and the functions using it
12180 so that complete 'Handshake' protocol structures are kept in memory
12181 instead of overwriting 'msg_type' and 'length' with 'body' data.
12185 * Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
12187 *Massimo Santin via Richard Levitte*
12189 * Major restructuring to the underlying ENGINE code. This includes
12190 reduction of linker bloat, separation of pure "ENGINE" manipulation
12191 (initialisation, etc) from functionality dealing with implementations
12192 of specific crypto interfaces. This change also introduces integrated
12193 support for symmetric ciphers and digest implementations - so ENGINEs
12194 can now accelerate these by providing EVP_CIPHER and EVP_MD
12195 implementations of their own. This is detailed in
12196 [crypto/engine/README.md](crypto/engine/README.md)
12197 as it couldn't be adequately described here. However, there are a few
12198 API changes worth noting - some RSA, DSA, DH, and RAND functions that
12199 were changed in the original introduction of ENGINE code have now
12200 reverted back - the hooking from this code to ENGINE is now a good
12201 deal more passive and at run-time, operations deal directly with
12202 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
12203 dereferencing through an ENGINE pointer any more. Also, the ENGINE
12204 functions dealing with `BN_MOD_EXP[_CRT]` handlers have been removed -
12205 they were not being used by the framework as there is no concept of a
12206 BIGNUM_METHOD and they could not be generalised to the new
12207 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
12208 ENGINE_cpy() has been removed as it cannot be consistently defined in
12213 * Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
12217 * Change mkdef.pl to sort symbols that get the same entry number,
12218 and make sure the automatically generated functions `ERR_load_*`
12219 become part of libeay.num as well.
12223 * New function SSL_renegotiate_pending(). This returns true once
12224 renegotiation has been requested (either SSL_renegotiate() call
12225 or HelloRequest/ClientHello received from the peer) and becomes
12226 false once a handshake has been completed.
12227 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
12228 sends a HelloRequest, but does not ensure that a handshake takes
12229 place. SSL_renegotiate_pending() is useful for checking if the
12230 client has followed the request.)
12234 * New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
12235 By default, clients may request session resumption even during
12236 renegotiation (if session ID contexts permit); with this option,
12237 session resumption is possible only in the first handshake.
12239 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
12240 more bits available for options that should not be part of
12241 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
12245 * Add some demos for certificate and certificate request creation.
12249 * Make maximum certificate chain size accepted from the peer application
12250 settable (`SSL*_get/set_max_cert_list()`), as proposed by
12251 "Douglas E. Engert" <deengert@anl.gov>.
12255 * Add support for shared libraries for Unixware-7
12256 (Boyd Lynn Gerber <gerberb@zenez.com>).
12260 * Add a "destroy" handler to ENGINEs that allows structural cleanup to
12261 be done prior to destruction. Use this to unload error strings from
12262 ENGINEs that load their own error strings. NB: This adds two new API
12263 functions to "get" and "set" this destroy handler in an ENGINE.
12267 * Alter all existing ENGINE implementations (except "openssl" and
12268 "openbsd") to dynamically instantiate their own error strings. This
12269 makes them more flexible to be built both as statically-linked ENGINEs
12270 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
12271 Also, add stub code to each that makes building them as self-contained
12272 shared-libraries easier (see [README-Engine.md](README-Engine.md)).
12276 * Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
12277 implementations into applications that are completely implemented in
12278 self-contained shared-libraries. The "dynamic" ENGINE exposes control
12279 commands that can be used to configure what shared-library to load and
12280 to control aspects of the way it is handled. Also, made an update to
12281 the [README-Engine.md](README-Engine.md) file
12282 that brings its information up-to-date and
12283 provides some information and instructions on the "dynamic" ENGINE
12284 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
12288 * Make it possible to unload ranges of ERR strings with a new
12289 "ERR_unload_strings" function.
12293 * Add a copy() function to EVP_MD.
12297 * Make EVP_MD routines take a context pointer instead of just the
12298 md_data void pointer.
12302 * Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
12303 that the digest can only process a single chunk of data
12304 (typically because it is provided by a piece of
12305 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
12306 is only going to provide a single chunk of data, and hence the
12307 framework needn't accumulate the data for oneshot drivers.
12311 * As with "ERR", make it possible to replace the underlying "ex_data"
12312 functions. This change also alters the storage and management of global
12313 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
12314 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
12315 index counters. The API functions that use this state have been changed
12316 to take a "class_index" rather than pointers to the class's local STACK
12317 and counter, and there is now an API function to dynamically create new
12318 classes. This centralisation allows us to (a) plug a lot of the
12319 thread-safety problems that existed, and (b) makes it possible to clean
12320 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
12321 such data would previously have always leaked in application code and
12322 workarounds were in place to make the memory debugging turn a blind eye
12323 to it. Application code that doesn't use this new function will still
12324 leak as before, but their memory debugging output will announce it now
12325 rather than letting it slide.
12327 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
12328 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
12329 has a return value to indicate success or failure.
12333 * Make it possible to replace the underlying "ERR" functions such that the
12334 global state (2 LHASH tables and 2 locks) is only used by the "default"
12335 implementation. This change also adds two functions to "get" and "set"
12336 the implementation prior to it being automatically set the first time
12337 any other ERR function takes place. Ie. an application can call "get",
12338 pass the return value to a module it has just loaded, and that module
12339 can call its own "set" function using that value. This means the
12340 module's "ERR" operations will use (and modify) the error state in the
12341 application and not in its own statically linked copy of OpenSSL code.
12345 * Give DH, DSA, and RSA types their own `*_up_ref()` function to increment
12346 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
12347 the operation, and provides a more encapsulated way for external code
12348 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
12349 to use these functions rather than manually incrementing the counts.
12351 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
12355 * Add EVP test program.
12359 * Add symmetric cipher support to ENGINE. Expect the API to change!
12363 * New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
12364 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
12365 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
12366 These allow a CRL to be built without having to access X509_CRL fields
12367 directly. Modify 'ca' application to use new functions.
12371 * Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
12372 bug workarounds. Rollback attack detection is a security feature.
12373 The problem will only arise on OpenSSL servers when TLSv1 is not
12374 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
12375 Software authors not wanting to support TLSv1 will have special reasons
12376 for their choice and can explicitly enable this option.
12378 *Bodo Moeller, Lutz Jaenicke*
12380 * Rationalise EVP so it can be extended: don't include a union of
12381 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
12382 (similar to those existing for EVP_CIPHER_CTX).
12387 EVP_MD_CTX_init(&md); /* new function call */
12388 EVP_DigestInit(&md, EVP_sha1());
12389 EVP_DigestUpdate(&md, in, len);
12390 EVP_DigestFinal(&md, out, NULL);
12391 EVP_MD_CTX_cleanup(&md); /* new function call */
12395 * Make DES key schedule conform to the usual scheme, as well as
12396 correcting its structure. This means that calls to DES functions
12397 now have to pass a pointer to a des_key_schedule instead of a
12398 plain des_key_schedule (which was actually always a pointer
12401 des_key_schedule ks;
12403 des_set_key_checked(..., &ks);
12404 des_ncbc_encrypt(..., &ks, ...);
12406 (Note that a later change renames 'des_...' into 'DES_...'.)
12410 * Initial reduction of linker bloat: the use of some functions, such as
12411 PEM causes large amounts of unused functions to be linked in due to
12412 poor organisation. For example pem_all.c contains every PEM function
12413 which has a knock on effect of linking in large amounts of (unused)
12414 ASN1 code. Grouping together similar functions and splitting unrelated
12415 functions prevents this.
12419 * Cleanup of EVP macros.
12423 * Change historical references to `{NID,SN,LN}_des_ede` and ede3 to add the
12424 correct `_ecb suffix`.
12428 * Add initial OCSP responder support to ocsp application. The
12429 revocation information is handled using the text based index
12430 use by the ca application. The responder can either handle
12431 requests generated internally, supplied in files (for example
12432 via a CGI script) or using an internal minimal server.
12436 * Add configuration choices to get zlib compression for TLS.
12440 * Changes to Kerberos SSL for RFC 2712 compliance:
12441 1. Implemented real KerberosWrapper, instead of just using
12442 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
12443 2. Implemented optional authenticator field of KerberosWrapper.
12445 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
12446 and authenticator structs; see crypto/krb5/.
12448 Generalized Kerberos calls to support multiple Kerberos libraries.
12449 *Vern Staats <staatsvr@asc.hpc.mil>, Jeffrey Altman <jaltman@columbia.edu>
12450 via Richard Levitte*
12452 * Cause 'openssl speed' to use fully hard-coded DSA keys as it
12453 already does with RSA. testdsa.h now has 'priv_key/pub_key'
12454 values for each of the key sizes rather than having just
12455 parameters (and 'speed' generating keys each time).
12459 * Speed up EVP routines.
12462 pe 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
12463 s-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
12464 s-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
12465 s-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
12467 s-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
12468 s-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
12469 s-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
12472 s-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
12474 s-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
12478 * Added the OS2-EMX target.
12480 *"Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte*
12482 * Rewrite commands to use `NCONF` routines instead of the old `CONF`.
12483 New functions to support `NCONF` routines in extension code.
12484 New function `CONF_set_nconf()`
12485 to allow functions which take an `NCONF` to also handle the old `LHASH`
12486 structure: this means that the old `CONF` compatible routines can be
12487 retained (in particular w.rt. extensions) without having to duplicate the
12488 code. New function `X509V3_add_ext_nconf_sk()` to add extensions to a stack.
12492 * Enhance the general user interface with mechanisms for inner control
12493 and with possibilities to have yes/no kind of prompts.
12497 * Change all calls to low-level digest routines in the library and
12498 applications to use EVP. Add missing calls to HMAC_cleanup() and
12499 don't assume HMAC_CTX can be copied using memcpy().
12501 *Verdon Walker <VWalker@novell.com>, Steve Henson*
12503 * Add the possibility to control engines through control names but with
12504 arbitrary arguments instead of just a string.
12505 Change the key loaders to take a UI_METHOD instead of a callback
12506 function pointer. NOTE: this breaks binary compatibility with earlier
12507 versions of OpenSSL [engine].
12508 Adapt the nCipher code for these new conditions and add a card insertion
12513 * Enhance the general user interface with mechanisms to better support
12514 dialog box interfaces, application-defined prompts, the possibility
12515 to use defaults (for example default passwords from somewhere else)
12516 and interrupts/cancellations.
12520 * Tidy up PKCS#12 attribute handling. Add support for the CSP name
12521 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
12525 * Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
12526 tidy up some unnecessarily weird code in 'sk_new()').
12528 *Geoff, reported by Diego Tartara <dtartara@novamens.com>*
12530 * Change the key loading routines for ENGINEs to use the same kind
12531 callback (pem_password_cb) as all other routines that need this
12536 * Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
12537 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
12538 than this minimum value is recommended.
12542 * New random seeder for OpenVMS, using the system process statistics
12543 that are easily reachable.
12547 * Windows apparently can't transparently handle global
12548 variables defined in DLLs. Initialisations such as:
12550 const ASN1_ITEM *it = &ASN1_INTEGER_it;
12552 won't compile. This is used by the any applications that need to
12553 declare their own ASN1 modules. This was fixed by adding the option
12554 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
12555 needed for static libraries under Win32.
12559 * New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
12560 setting of purpose and trust fields. New X509_STORE trust and
12561 purpose functions and tidy up setting in other SSL functions.
12565 * Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
12566 structure. These are inherited by X509_STORE_CTX when it is
12567 initialised. This allows various defaults to be set in the
12568 X509_STORE structure (such as flags for CRL checking and custom
12569 purpose or trust settings) for functions which only use X509_STORE_CTX
12570 internally such as S/MIME.
12572 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
12573 trust settings if they are not set in X509_STORE. This allows X509_STORE
12574 purposes and trust (in S/MIME for example) to override any set by default.
12576 Add command line options for CRL checking to smime, s_client and s_server
12581 * Initial CRL based revocation checking. If the CRL checking flag(s)
12582 are set then the CRL is looked up in the X509_STORE structure and
12583 its validity and signature checked, then if the certificate is found
12584 in the CRL the verify fails with a revoked error.
12586 Various new CRL related callbacks added to X509_STORE_CTX structure.
12588 Command line options added to 'verify' application to support this.
12590 This needs some additional work, such as being able to handle multiple
12591 CRLs with different times, extension based lookup (rather than just
12592 by subject name) and ultimately more complete V2 CRL extension
12597 * Add a general user interface API (crypto/ui/). This is designed
12598 to replace things like des_read_password and friends (backward
12599 compatibility functions using this new API are provided).
12600 The purpose is to remove prompting functions from the DES code
12601 section as well as provide for prompting through dialog boxes in
12602 a window system and the like.
12606 * Add "ex_data" support to ENGINE so implementations can add state at a
12607 per-structure level rather than having to store it globally.
12611 * Make it possible for ENGINE structures to be copied when retrieved by
12612 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
12613 This causes the "original" ENGINE structure to act like a template,
12614 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
12615 operational state can be localised to each ENGINE structure, despite the
12616 fact they all share the same "methods". New ENGINE structures returned in
12617 this case have no functional references and the return value is the single
12618 structural reference. This matches the single structural reference returned
12619 by ENGINE_by_id() normally, when it is incremented on the pre-existing
12624 * Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
12625 needs to match any other type at all we need to manually clear the
12630 * Changes to the "openssl engine" utility to include;
12631 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
12632 about an ENGINE's available control commands.
12633 - executing control commands from command line arguments using the
12634 '-pre' and '-post' switches. '-post' is only used if '-t' is
12635 specified and the ENGINE is successfully initialised. The syntax for
12636 the individual commands are colon-separated, for example;
12637 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
12641 * New dynamic control command support for ENGINEs. ENGINEs can now
12642 declare their own commands (numbers), names (strings), descriptions,
12643 and input types for run-time discovery by calling applications. A
12644 subset of these commands are implicitly classed as "executable"
12645 depending on their input type, and only these can be invoked through
12646 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
12647 can be based on user input, config files, etc). The distinction is
12648 that "executable" commands cannot return anything other than a boolean
12649 result and can only support numeric or string input, whereas some
12650 discoverable commands may only be for direct use through
12651 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
12652 pointers, or other custom uses. The "executable" commands are to
12653 support parameterisations of ENGINE behaviour that can be
12654 unambiguously defined by ENGINEs and used consistently across any
12655 OpenSSL-based application. Commands have been added to all the
12656 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
12657 control over shared-library paths without source code alterations.
12661 * Changed all ENGINE implementations to dynamically allocate their
12662 ENGINEs rather than declaring them statically. Apart from this being
12663 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
12664 this also allows the implementations to compile without using the
12665 internal engine_int.h header.
12669 * Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
12670 'const' value. Any code that should be able to modify a RAND_METHOD
12671 should already have non-const pointers to it (ie. they should only
12672 modify their own ones).
12676 * Made a variety of little tweaks to the ENGINE code.
12677 - "atalla" and "ubsec" string definitions were moved from header files
12678 to C code. "nuron" string definitions were placed in variables
12679 rather than hard-coded - allowing parameterisation of these values
12680 later on via ctrl() commands.
12681 - Removed unused "#if 0"'d code.
12682 - Fixed engine list iteration code so it uses ENGINE_free() to release
12683 structural references.
12684 - Constified the RAND_METHOD element of ENGINE structures.
12685 - Constified various get/set functions as appropriate and added
12686 missing functions (including a catch-all ENGINE_cpy that duplicates
12687 all ENGINE values onto a new ENGINE except reference counts/state).
12688 - Removed NULL parameter checks in get/set functions. Setting a method
12689 or function to NULL is a way of cancelling out a previously set
12690 value. Passing a NULL ENGINE parameter is just plain stupid anyway
12691 and doesn't justify the extra error symbols and code.
12692 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
12693 flags from engine_int.h to engine.h.
12694 - Changed prototypes for ENGINE handler functions (init(), finish(),
12695 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
12699 * Implement binary inversion algorithm for BN_mod_inverse in addition
12700 to the algorithm using long division. The binary algorithm can be
12701 used only if the modulus is odd. On 32-bit systems, it is faster
12702 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
12703 roughly 5-15% for 256-bit moduli), so we use it only for moduli
12704 up to 450 bits. In 64-bit environments, the binary algorithm
12705 appears to be advantageous for much longer moduli; here we use it
12706 for moduli up to 2048 bits.
12710 * Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
12711 could not support the combine flag in choice fields.
12715 * Add a 'copy_extensions' option to the 'ca' utility. This copies
12716 extensions from a certificate request to the certificate.
12720 * Allow multiple 'certopt' and 'nameopt' options to be separated
12721 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
12722 file: this allows the display of the certificate about to be
12723 signed to be customised, to allow certain fields to be included
12724 or excluded and extension details. The old system didn't display
12725 multicharacter strings properly, omitted fields not in the policy
12726 and couldn't display additional details such as extensions.
12730 * Function EC_POINTs_mul for multiple scalar multiplication
12731 of an arbitrary number of elliptic curve points
12732 \sum scalars[i]*points[i],
12733 optionally including the generator defined for the EC_GROUP:
12734 scalar*generator + \sum scalars[i]*points[i].
12736 EC_POINT_mul is a simple wrapper function for the typical case
12737 that the point list has just one item (besides the optional
12742 * First EC_METHODs for curves over GF(p):
12744 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
12745 operations and provides various method functions that can also
12746 operate with faster implementations of modular arithmetic.
12748 EC_GFp_mont_method() reuses most functions that are part of
12749 EC_GFp_simple_method, but uses Montgomery arithmetic.
12751 *Bodo Moeller; point addition and point doubling
12752 implementation directly derived from source code provided by
12753 Lenka Fibikova <fibikova@exp-math.uni-essen.de>*
12755 * Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
12756 crypto/ec/ec_lib.c):
12758 Curves are EC_GROUP objects (with an optional group generator)
12759 based on EC_METHODs that are built into the library.
12761 Points are EC_POINT objects based on EC_GROUP objects.
12763 Most of the framework would be able to handle curves over arbitrary
12764 finite fields, but as there are no obvious types for fields other
12765 than GF(p), some functions are limited to that for now.
12769 * Add the -HTTP option to s_server. It is similar to -WWW, but requires
12770 that the file contains a complete HTTP response.
12774 * Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
12775 change the def and num file printf format specifier from "%-40sXXX"
12776 to "%-39s XXX". The latter will always guarantee a space after the
12777 field while the former will cause them to run together if the field
12778 is 40 of more characters long.
12782 * Constify the cipher and digest 'method' functions and structures
12783 and modify related functions to take constant EVP_MD and EVP_CIPHER
12788 * Hide BN_CTX structure details in bn_lcl.h instead of publishing them
12789 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
12793 * Modify `EVP_Digest*()` routines so they now return values. Although the
12794 internal software routines can never fail additional hardware versions
12799 * Clean up crypto/err/err.h and change some error codes to avoid conflicts:
12801 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
12802 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
12805 ERR_R_NESTED_ASN1_ERROR
12807 ERR_R_MISSING_ASN1_EOS
12808 were 4 .. 9, conflicting with
12809 ERR_LIB_RSA (= ERR_R_RSA_LIB)
12811 ERR_LIB_PEM (= ERR_R_PEM_LIB).
12812 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
12814 Add new error code 'ERR_R_INTERNAL_ERROR'.
12818 * Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
12823 * New option '-subj arg' for 'openssl req' and 'openssl ca'. This
12824 sets the subject name for a new request or supersedes the
12825 subject name in a given request. Formats that can be parsed are
12826 'CN=Some Name, OU=myOU, C=IT'
12828 'CN=Some Name/OU=myOU/C=IT'.
12830 Add options '-batch' and '-verbose' to 'openssl req'.
12832 *Massimiliano Pala <madwolf@hackmasters.net>*
12834 * Introduce the possibility to access global variables through
12835 functions on platform were that's the best way to handle exporting
12836 global variables in shared libraries. To enable this functionality,
12837 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
12838 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
12839 is normally done by Configure or something similar).
12841 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
12842 in the source file (foo.c) like this:
12844 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
12845 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
12847 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
12848 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
12850 OPENSSL_DECLARE_GLOBAL(int,foo);
12851 #define foo OPENSSL_GLOBAL_REF(foo)
12852 OPENSSL_DECLARE_GLOBAL(double,bar);
12853 #define bar OPENSSL_GLOBAL_REF(bar)
12855 The #defines are very important, and therefore so is including the
12856 header file everywhere where the defined globals are used.
12858 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
12859 of ASN.1 items, but that structure is a bit different.
12861 The largest change is in util/mkdef.pl which has been enhanced with
12862 better and easier to understand logic to choose which symbols should
12863 go into the Windows .def files as well as a number of fixes and code
12864 cleanup (among others, algorithm keywords are now sorted
12865 lexicographically to avoid constant rewrites).
12869 * In BN_div() keep a copy of the sign of 'num' before writing the
12870 result to 'rm' because if rm==num the value will be overwritten
12871 and produce the wrong result if 'num' is negative: this caused
12872 problems with BN_mod() and BN_nnmod().
12876 * Function OCSP_request_verify(). This checks the signature on an
12877 OCSP request and verifies the signer certificate. The signer
12878 certificate is just checked for a generic purpose and OCSP request
12883 * Add OCSP_check_validity() function to check the validity of OCSP
12884 responses. OCSP responses are prepared in real time and may only
12885 be a few seconds old. Simply checking that the current time lies
12886 between thisUpdate and nextUpdate max reject otherwise valid responses
12887 caused by either OCSP responder or client clock inaccuracy. Instead
12888 we allow thisUpdate and nextUpdate to fall within a certain period of
12889 the current time. The age of the response can also optionally be
12890 checked. Two new options -validity_period and -status_age added to
12895 * If signature or public key algorithm is unrecognized print out its
12896 OID rather that just UNKNOWN.
12900 * Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
12901 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
12902 ID to be generated from the issuer certificate alone which can then be
12903 passed to OCSP_id_issuer_cmp().
12907 * New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
12908 ASN1 modules to export functions returning ASN1_ITEM pointers
12909 instead of the ASN1_ITEM structures themselves. This adds several
12910 new macros which allow the underlying ASN1 function/structure to
12911 be accessed transparently. As a result code should not use ASN1_ITEM
12912 references directly (such as &X509_it) but instead use the relevant
12913 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
12914 use of the new ASN1 code on platforms where exporting structures
12915 is problematical (for example in shared libraries) but exporting
12916 functions returning pointers to structures is not.
12920 * Add support for overriding the generation of SSL/TLS session IDs.
12921 These callbacks can be registered either in an SSL_CTX or per SSL.
12922 The purpose of this is to allow applications to control, if they wish,
12923 the arbitrary values chosen for use as session IDs, particularly as it
12924 can be useful for session caching in multiple-server environments. A
12925 command-line switch for testing this (and any client code that wishes
12926 to use such a feature) has been added to "s_server".
12928 *Geoff Thorpe, Lutz Jaenicke*
12930 * Modify mkdef.pl to recognise and parse preprocessor conditionals
12931 of the form `#if defined(...) || defined(...) || ...` and
12932 `#if !defined(...) && !defined(...) && ...`. This also avoids
12933 the growing number of special cases it was previously handling.
12937 * Make all configuration macros available for application by making
12938 sure they are available in opensslconf.h, by giving them names starting
12939 with `OPENSSL_` to avoid conflicts with other packages and by making
12940 sure e_os2.h will cover all platform-specific cases together with
12942 Additionally, it is now possible to define configuration/platform-
12943 specific names (called "system identities"). In the C code, these
12944 are prefixed with `OPENSSL_SYSNAME_`. e_os2.h will create another
12945 macro with the name beginning with `OPENSSL_SYS_`, which is determined
12946 from `OPENSSL_SYSNAME_*` or compiler-specific macros depending on
12951 * New option -set_serial to 'req' and 'x509' this allows the serial
12952 number to use to be specified on the command line. Previously self
12953 signed certificates were hard coded with serial number 0 and the
12954 CA options of 'x509' had to use a serial number in a file which was
12959 * New options to 'ca' utility to support V2 CRL entry extensions.
12960 Currently CRL reason, invalidity date and hold instruction are
12961 supported. Add new CRL extensions to V3 code and some new objects.
12965 * New function EVP_CIPHER_CTX_set_padding() this is used to
12966 disable standard block padding (aka PKCS#5 padding) in the EVP
12967 API, which was previously mandatory. This means that the data is
12968 not padded in any way and so the total length much be a multiple
12969 of the block size, otherwise an error occurs.
12973 * Initial (incomplete) OCSP SSL support.
12977 * New function OCSP_parse_url(). This splits up a URL into its host,
12978 port and path components: primarily to parse OCSP URLs. New -url
12979 option to ocsp utility.
12983 * New nonce behavior. The return value of OCSP_check_nonce() now
12984 reflects the various checks performed. Applications can decide
12985 whether to tolerate certain situations such as an absent nonce
12986 in a response when one was present in a request: the ocsp application
12987 just prints out a warning. New function OCSP_add1_basic_nonce()
12988 this is to allow responders to include a nonce in a response even if
12989 the request is nonce-less.
12993 * Disable stdin buffering in `load_cert()` (`apps/apps.c`) so that no certs are
12994 skipped when using openssl x509 multiple times on a single input file,
12995 e.g. `(openssl x509 -out cert1; openssl x509 -out cert2) <certs`.
12999 * Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
13000 set string type: to handle setting ASN1_TIME structures. Fix ca
13001 utility to correctly initialize revocation date of CRLs.
13005 * New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
13006 the clients preferred ciphersuites and rather use its own preferences.
13007 Should help to work around M$ SGC (Server Gated Cryptography) bug in
13008 Internet Explorer by ensuring unchanged hash method during stepup.
13009 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
13013 * Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
13014 to aes and add a new 'exist' option to print out symbols that don't
13019 * Additional options to ocsp utility to allow flags to be set and
13020 additional certificates supplied.
13024 * Add the option -VAfile to 'openssl ocsp', so the user can give the
13025 OCSP client a number of certificate to only verify the response
13030 * Update Rijndael code to version 3.0 and change EVP AES ciphers to
13031 handle the new API. Currently only ECB, CBC modes supported. Add new
13034 Add TLS AES ciphersuites as described in RFC3268, "Advanced
13035 Encryption Standard (AES) Ciphersuites for Transport Layer
13036 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
13037 not enabled by default and were not part of the "ALL" ciphersuite
13038 alias because they were not yet official; they could be
13039 explicitly requested by specifying the "AESdraft" ciphersuite
13040 group alias. In the final release of OpenSSL 0.9.7, the group
13041 alias is called "AES" and is part of "ALL".)
13043 *Ben Laurie, Steve Henson, Bodo Moeller*
13045 * New function OCSP_copy_nonce() to copy nonce value (if present) from
13046 request to response.
13050 * Functions for OCSP responders. OCSP_request_onereq_count(),
13051 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
13052 extract information from a certificate request. OCSP_response_create()
13053 creates a response and optionally adds a basic response structure.
13054 OCSP_basic_add1_status() adds a complete single response to a basic
13055 response and returns the OCSP_SINGLERESP structure just added (to allow
13056 extensions to be included for example). OCSP_basic_add1_cert() adds a
13057 certificate to a basic response and OCSP_basic_sign() signs a basic
13058 response with various flags. New helper functions ASN1_TIME_check()
13059 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
13060 (converts ASN1_TIME to GeneralizedTime).
13064 * Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
13065 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
13066 structure from a certificate. X509_pubkey_digest() digests the public_key
13067 contents: this is used in various key identifiers.
13071 * Make sk_sort() tolerate a NULL argument.
13073 *Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>*
13075 * New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
13076 passed by the function are trusted implicitly. If any of them signed the
13077 response then it is assumed to be valid and is not verified.
13081 * In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
13082 to data. This was previously part of the PKCS7 ASN1 code. This
13083 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
13084 *Steve Henson, reported by Kenneth R. Robinette
13085 <support@securenetterm.com>*
13087 * Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
13088 routines: without these tracing memory leaks is very painful.
13089 Fix leaks in PKCS12 and PKCS7 routines.
13093 * Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
13094 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
13095 effectively meant GeneralizedTime would never be used. Now it
13096 is initialised to -1 but X509_time_adj() now has to check the value
13097 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
13098 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
13099 *Steve Henson, reported by Kenneth R. Robinette
13100 <support@securenetterm.com>*
13102 * Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
13103 result in a zero length in the ASN1_INTEGER structure which was
13104 not consistent with the structure when d2i_ASN1_INTEGER() was used
13105 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
13106 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
13107 where it did not print out a minus for negative ASN1_INTEGER.
13111 * Add summary printout to ocsp utility. The various functions which
13112 convert status values to strings have been renamed to:
13113 OCSP_response_status_str(), OCSP_cert_status_str() and
13114 OCSP_crl_reason_str() and are no longer static. New options
13115 to verify nonce values and to disable verification. OCSP response
13116 printout format cleaned up.
13120 * Add additional OCSP certificate checks. These are those specified
13121 in RFC2560. This consists of two separate checks: the CA of the
13122 certificate being checked must either be the OCSP signer certificate
13123 or the issuer of the OCSP signer certificate. In the latter case the
13124 OCSP signer certificate must contain the OCSP signing extended key
13125 usage. This check is performed by attempting to match the OCSP
13126 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
13127 in the OCSP_CERTID structures of the response.
13131 * Initial OCSP certificate verification added to OCSP_basic_verify()
13132 and related routines. This uses the standard OpenSSL certificate
13133 verify routines to perform initial checks (just CA validity) and
13134 to obtain the certificate chain. Then additional checks will be
13135 performed on the chain. Currently the root CA is checked to see
13136 if it is explicitly trusted for OCSP signing. This is used to set
13137 a root CA as a global signing root: that is any certificate that
13138 chains to that CA is an acceptable OCSP signing certificate.
13142 * New '-extfile ...' option to 'openssl ca' for reading X.509v3
13143 extensions from a separate configuration file.
13144 As when reading extensions from the main configuration file,
13145 the '-extensions ...' option may be used for specifying the
13148 *Massimiliano Pala <madwolf@comune.modena.it>*
13150 * New OCSP utility. Allows OCSP requests to be generated or
13151 read. The request can be sent to a responder and the output
13152 parsed, outputted or printed in text form. Not complete yet:
13153 still needs to check the OCSP response validity.
13157 * New subcommands for 'openssl ca':
13158 `openssl ca -status <serial>` prints the status of the cert with
13159 the given serial number (according to the index file).
13160 `openssl ca -updatedb` updates the expiry status of certificates
13163 *Massimiliano Pala <madwolf@comune.modena.it>*
13165 * New '-newreq-nodes' command option to CA.pl. This is like
13166 '-newreq', but calls 'openssl req' with the '-nodes' option
13167 so that the resulting key is not encrypted.
13169 *Damien Miller <djm@mindrot.org>*
13171 * New configuration for the GNU Hurd.
13173 *Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte*
13175 * Initial code to implement OCSP basic response verify. This
13176 is currently incomplete. Currently just finds the signer's
13177 certificate and verifies the signature on the response.
13181 * New SSLeay_version code SSLEAY_DIR to determine the compiled-in
13182 value of OPENSSLDIR. This is available via the new '-d' option
13183 to 'openssl version', and is also included in 'openssl version -a'.
13187 * Allowing defining memory allocation callbacks that will be given
13188 file name and line number information in additional arguments
13189 (a `const char*` and an int). The basic functionality remains, as
13190 well as the original possibility to just replace malloc(),
13191 realloc() and free() by functions that do not know about these
13192 additional arguments. To register and find out the current
13193 settings for extended allocation functions, the following
13194 functions are provided:
13196 CRYPTO_set_mem_ex_functions
13197 CRYPTO_set_locked_mem_ex_functions
13198 CRYPTO_get_mem_ex_functions
13199 CRYPTO_get_locked_mem_ex_functions
13201 These work the same way as CRYPTO_set_mem_functions and friends.
13202 `CRYPTO_get_[locked_]mem_functions` now writes 0 where such an
13203 extended allocation function is enabled.
13204 Similarly, `CRYPTO_get_[locked_]mem_ex_functions` writes 0 where
13205 a conventional allocation function is enabled.
13207 *Richard Levitte, Bodo Moeller*
13209 * Finish off removing the remaining LHASH function pointer casts.
13210 There should no longer be any prototype-casting required when using
13211 the LHASH abstraction, and any casts that remain are "bugs". See
13212 the callback types and macros at the head of lhash.h for details
13213 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
13217 * Add automatic query of EGD sockets in RAND_poll() for the unix variant.
13218 If /dev/[u]random devices are not available or do not return enough
13219 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
13221 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
13222 /etc/entropy will be queried once each in this sequence, querying stops
13223 when enough entropy was collected without querying more sockets.
13227 * Change the Unix RAND_poll() variant to be able to poll several
13228 random devices, as specified by DEVRANDOM, until a sufficient amount
13229 of data has been collected. We spend at most 10 ms on each file
13230 (select timeout) and read in non-blocking mode. DEVRANDOM now
13231 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
13232 (previously it was just the string "/dev/urandom"), so on typical
13233 platforms the 10 ms delay will never occur.
13234 Also separate out the Unix variant to its own file, rand_unix.c.
13235 For VMS, there's a currently-empty rand_vms.c.
13239 * Move OCSP client related routines to ocsp_cl.c. These
13240 provide utility functions which an application needing
13241 to issue a request to an OCSP responder and analyse the
13242 response will typically need: as opposed to those which an
13243 OCSP responder itself would need which will be added later.
13245 OCSP_request_sign() signs an OCSP request with an API similar
13246 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
13247 response. OCSP_response_get1_basic() extracts basic response
13248 from response. OCSP_resp_find_status(): finds and extracts status
13249 information from an OCSP_CERTID structure (which will be created
13250 when the request structure is built). These are built from lower
13251 level functions which work on OCSP_SINGLERESP structures but
13252 won't normally be used unless the application wishes to examine
13253 extensions in the OCSP response for example.
13255 Replace nonce routines with a pair of functions.
13256 OCSP_request_add1_nonce() adds a nonce value and optionally
13257 generates a random value. OCSP_check_nonce() checks the
13258 validity of the nonce in an OCSP response.
13262 * Change function OCSP_request_add() to OCSP_request_add0_id().
13263 This doesn't copy the supplied OCSP_CERTID and avoids the
13264 need to free up the newly created id. Change return type
13265 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
13266 This can then be used to add extensions to the request.
13267 Deleted OCSP_request_new(), since most of its functionality
13268 is now in OCSP_REQUEST_new() (and the case insensitive name
13269 clash) apart from the ability to set the request name which
13270 will be added elsewhere.
13274 * Update OCSP API. Remove obsolete extensions argument from
13275 various functions. Extensions are now handled using the new
13276 OCSP extension code. New simple OCSP HTTP function which
13277 can be used to send requests and parse the response.
13281 * Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
13282 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
13283 uses the special reorder version of SET OF to sort the attributes
13284 and reorder them to match the encoded order. This resolves a long
13285 standing problem: a verify on a PKCS7 structure just after signing
13286 it used to fail because the attribute order did not match the
13287 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
13288 it uses the received order. This is necessary to tolerate some broken
13289 software that does not order SET OF. This is handled by encoding
13290 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
13291 to produce the required SET OF.
13295 * Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
13296 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
13297 files to get correct declarations of the ASN.1 item variables.
13301 * Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
13302 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
13303 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
13304 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
13305 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
13306 ASN1_ITEM and no wrapper functions.
13310 * New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
13311 replace the old function pointer based I/O routines. Change most of
13312 the `*_d2i_bio()` and `*_d2i_fp()` functions to use these.
13316 * Enhance mkdef.pl to be more accepting about spacing in C preprocessor
13317 lines, recognize more "algorithms" that can be deselected, and make
13318 it complain about algorithm deselection that isn't recognised.
13322 * New ASN1 functions to handle dup, sign, verify, digest, pack and
13323 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
13324 to use new functions. Add NO_ASN1_OLD which can be set to remove
13325 some old style ASN1 functions: this can be used to determine if old
13326 code will still work when these eventually go away.
13330 * New extension functions for OCSP structures, these follow the
13331 same conventions as certificates and CRLs.
13335 * New function X509V3_add1_i2d(). This automatically encodes and
13336 adds an extension. Its behaviour can be customised with various
13337 flags to append, replace or delete. Various wrappers added for
13338 certificates and CRLs.
13342 * Fix to avoid calling the underlying ASN1 print routine when
13343 an extension cannot be parsed. Correct a typo in the
13344 OCSP_SERVICELOC extension. Tidy up print OCSP format.
13348 * Make mkdef.pl parse some of the ASN1 macros and add appropriate
13349 entries for variables.
13353 * Add functionality to `apps/openssl.c` for detecting locking
13354 problems: As the program is single-threaded, all we have
13355 to do is register a locking callback using an array for
13356 storing which locks are currently held by the program.
13360 * Use a lock around the call to CRYPTO_get_ex_new_index() in
13361 SSL_get_ex_data_X509_STORE_idx(), which is used in
13362 ssl_verify_cert_chain() and thus can be called at any time
13363 during TLS/SSL handshakes so that thread-safety is essential.
13364 Unfortunately, the ex_data design is not at all suited
13365 for multi-threaded use, so it probably should be abolished.
13369 * Added Broadcom "ubsec" ENGINE to OpenSSL.
13371 *Broadcom, tweaked and integrated by Geoff Thorpe*
13373 * Move common extension printing code to new function
13374 X509V3_print_extensions(). Reorganise OCSP print routines and
13375 implement some needed OCSP ASN1 functions. Add OCSP extensions.
13379 * New function X509_signature_print() to remove duplication in some
13384 * Add a special meaning when SET OF and SEQUENCE OF flags are both
13385 set (this was treated exactly the same as SET OF previously). This
13386 is used to reorder the STACK representing the structure to match the
13387 encoding. This will be used to get round a problem where a PKCS7
13388 structure which was signed could not be verified because the STACK
13389 order did not reflect the encoded order.
13393 * Reimplement the OCSP ASN1 module using the new code.
13397 * Update the X509V3 code to permit the use of an ASN1_ITEM structure
13398 for its ASN1 operations. The old style function pointers still exist
13399 for now but they will eventually go away.
13403 * Merge in replacement ASN1 code from the ASN1 branch. This almost
13404 completely replaces the old ASN1 functionality with a table driven
13405 encoder and decoder which interprets an ASN1_ITEM structure describing
13406 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
13407 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
13408 has also been converted to the new form.
13412 * Change BN_mod_exp_recp so that negative moduli are tolerated
13413 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
13414 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
13415 for negative moduli.
13419 * Fix BN_uadd and BN_usub: Always return non-negative results instead
13420 of not touching the result's sign bit.
13424 * BN_div bugfix: If the result is 0, the sign (res->neg) must not be
13429 * Changed the LHASH code to use prototypes for callbacks, and created
13430 macros to declare and implement thin (optionally static) functions
13431 that provide type-safety and avoid function pointer casting for the
13432 type-specific callbacks.
13436 * Added Kerberos Cipher Suites to be used with TLS, as written in
13438 *Veers Staats <staatsvr@asc.hpc.mil>,
13439 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte*
13441 * Reformat the FAQ so the different questions and answers can be divided
13442 in sections depending on the subject.
13446 * Have the zlib compression code load ZLIB.DLL dynamically under
13451 * New function BN_mod_sqrt for computing square roots modulo a prime
13452 (using the probabilistic Tonelli-Shanks algorithm unless
13453 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
13454 be handled deterministically).
13456 *Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller*
13458 * Make BN_mod_inverse faster by explicitly handling small quotients
13459 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
13460 512 bits], about 30% for larger ones [1024 or 2048 bits].)
13464 * New function BN_kronecker.
13468 * Fix BN_gcd so that it works on negative inputs; the result is
13469 positive unless both parameters are zero.
13470 Previously something reasonably close to an infinite loop was
13471 possible because numbers could be growing instead of shrinking
13472 in the implementation of Euclid's algorithm.
13476 * Fix BN_is_word() and BN_is_one() macros to take into account the
13477 sign of the number in question.
13479 Fix BN_is_word(a,w) to work correctly for w == 0.
13481 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
13482 because its test if the absolute value of 'a' equals 'w'.
13483 Note that BN_abs_is_word does *not* handle w == 0 reliably;
13484 it exists mostly for use in the implementations of BN_is_zero(),
13485 BN_is_one(), and BN_is_word().
13489 * New function BN_swap.
13493 * Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
13494 the exponentiation functions are more likely to produce reasonable
13495 results on negative inputs.
13499 * Change BN_mod_mul so that the result is always non-negative.
13500 Previously, it could be negative if one of the factors was negative;
13501 I don't think anyone really wanted that behaviour.
13505 * Move `BN_mod_...` functions into new file `crypto/bn/bn_mod.c`
13506 (except for exponentiation, which stays in `crypto/bn/bn_exp.c`,
13507 and `BN_mod_mul_reciprocal`, which stays in `crypto/bn/bn_recp.c`)
13508 and add new functions:
13517 BN_mod_lshift1_quick
13519 BN_mod_lshift_quick
13521 These functions always generate non-negative results.
13523 `BN_nnmod` otherwise is `like BN_mod` (if `BN_mod` computes a remainder `r`
13524 such that `|m| < r < 0`, `BN_nnmod` will output `rem + |m|` instead).
13526 `BN_mod_XXX_quick(r, a, [b,] m)` generates the same result as
13527 `BN_mod_XXX(r, a, [b,] m, ctx)`, but requires that `a` [and `b`]
13528 be reduced modulo `m`.
13530 *Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller*
13533 The following entry accidentally appeared in the CHANGES file
13534 distributed with OpenSSL 0.9.7. The modifications described in
13535 it do *not* apply to OpenSSL 0.9.7.
13537 * Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
13538 was actually never needed) and in BN_mul(). The removal in BN_mul()
13539 required a small change in bn_mul_part_recursive() and the addition
13540 of the functions bn_cmp_part_words(), bn_sub_part_words() and
13541 bn_add_part_words(), which do the same thing as bn_cmp_words(),
13542 bn_sub_words() and bn_add_words() except they take arrays with
13548 * In 'openssl passwd', verify passwords read from the terminal
13549 unless the '-salt' option is used (which usually means that
13550 verification would just waste user's time since the resulting
13551 hash is going to be compared with some given password hash)
13552 or the new '-noverify' option is used.
13554 This is an incompatible change, but it does not affect
13555 non-interactive use of 'openssl passwd' (passwords on the command
13556 line, '-stdin' option, '-in ...' option) and thus should not
13557 cause any problems.
13561 * Remove all references to RSAref, since there's no more need for it.
13565 * Make DSO load along a path given through an environment variable
13566 (SHLIB_PATH) with shl_load().
13570 * Constify the ENGINE code as a result of BIGNUM constification.
13571 Also constify the RSA code and most things related to it. In a
13572 few places, most notable in the depth of the ASN.1 code, ugly
13573 casts back to non-const were required (to be solved at a later
13578 * Make it so the openssl application has all engines loaded by default.
13582 * Constify the BIGNUM routines a little more.
13586 * Add the following functions:
13588 ENGINE_load_cswift()
13590 ENGINE_load_atalla()
13591 ENGINE_load_nuron()
13592 ENGINE_load_builtin_engines()
13594 That way, an application can itself choose if external engines that
13595 are built-in in OpenSSL shall ever be used or not. The benefit is
13596 that applications won't have to be linked with libdl or other dso
13597 libraries unless it's really needed.
13599 Changed 'openssl engine' to load all engines on demand.
13600 Changed the engine header files to avoid the duplication of some
13601 declarations (they differed!).
13605 * 'openssl engine' can now list capabilities.
13609 * Better error reporting in 'openssl engine'.
13613 * Never call load_dh_param(NULL) in s_server.
13617 * Add engine application. It can currently list engines by name and
13618 identity, and test if they are actually available.
13622 * Improve RPM specification file by forcing symbolic linking and making
13623 sure the installed documentation is also owned by root.root.
13625 *Damien Miller <djm@mindrot.org>*
13627 * Give the OpenSSL applications more possibilities to make use of
13628 keys (public as well as private) handled by engines.
13632 * Add OCSP code that comes from CertCo.
13636 * Add VMS support for the Rijndael code.
13640 * Added untested support for Nuron crypto accelerator.
13644 * Add support for external cryptographic devices. This code was
13645 previously distributed separately as the "engine" branch.
13647 *Geoff Thorpe, Richard Levitte*
13649 * Rework the filename-translation in the DSO code. It is now possible to
13650 have far greater control over how a "name" is turned into a filename
13651 depending on the operating environment and any oddities about the
13652 different shared library filenames on each system.
13656 * Support threads on FreeBSD-elf in Configure.
13660 * Fix for SHA1 assembly problem with MASM: it produces
13661 warnings about corrupt line number information when assembling
13662 with debugging information. This is caused by the overlapping
13665 *Bernd Matthes <mainbug@celocom.de>, Steve Henson*
13668 NCONF_get_number() has no error checking at all. As a replacement,
13669 NCONF_get_number_e() is defined (`_e` for "error checking") and is
13670 promoted strongly. The old NCONF_get_number is kept around for
13671 binary backward compatibility.
13672 Make it possible for methods to load from something other than a BIO,
13673 by providing a function pointer that is given a name instead of a BIO.
13674 For example, this could be used to load configuration data from an
13679 * Fix for non blocking accept BIOs. Added new I/O special reason
13680 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
13681 with non blocking I/O was not possible because no retry code was
13682 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
13687 * Added the beginnings of Rijndael support.
13691 * Fix for bug in DirectoryString mask setting. Add support for
13692 X509_NAME_print_ex() in 'req' and X509_print_ex() function
13693 to allow certificate printing to more controllable, additional
13694 'certopt' option to 'x509' to allow new printing options to be
13699 * Clean old EAY MD5 hack from e_os.h.
13703 ### Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
13705 * Fix null-pointer assignment in do_change_cipher_spec() revealed
13706 by using the Codenomicon TLS Test Tool ([CVE-2004-0079])
13708 *Joe Orton, Steve Henson*
13710 ### Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
13712 * Fix additional bug revealed by the NISCC test suite:
13714 Stop bug triggering large recursion when presented with
13715 certain ASN.1 tags ([CVE-2003-0851])
13719 ### Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
13721 * Fix various bugs revealed by running the NISCC test suite:
13723 Stop out of bounds reads in the ASN1 code when presented with
13724 invalid tags (CVE-2003-0543 and CVE-2003-0544).
13726 If verify callback ignores invalid public key errors don't try to check
13727 certificate signature with the NULL public key.
13731 * In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
13732 if the server requested one: as stated in TLS 1.0 and SSL 3.0
13737 * In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
13738 extra data after the compression methods not only for TLS 1.0
13739 but also for SSL 3.0 (as required by the specification).
13741 *Bodo Moeller; problem pointed out by Matthias Loepfe*
13743 * Change X509_certificate_type() to mark the key as exported/exportable
13744 when it's 512 *bits* long, not 512 bytes.
13748 ### Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
13750 * Countermeasure against the Klima-Pokorny-Rosa extension of
13751 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
13752 a protocol version number mismatch like a decryption error
13753 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
13757 * Turn on RSA blinding by default in the default implementation
13758 to avoid a timing attack. Applications that don't want it can call
13759 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
13760 They would be ill-advised to do so in most cases.
13762 *Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller*
13764 * Change RSA blinding code so that it works when the PRNG is not
13765 seeded (in this case, the secret RSA exponent is abused as
13766 an unpredictable seed -- if it is not unpredictable, there
13767 is no point in blinding anyway). Make RSA blinding thread-safe
13768 by remembering the creator's thread ID in rsa->blinding and
13769 having all other threads use local one-time blinding factors
13770 (this requires more computation than sharing rsa->blinding, but
13771 avoids excessive locking; and if an RSA object is not shared
13772 between threads, blinding will still be very fast).
13776 ### Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
13778 * In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
13779 via timing by performing a MAC computation even if incorrect
13780 block cipher padding has been found. This is a countermeasure
13781 against active attacks where the attacker has to distinguish
13782 between bad padding and a MAC verification error. ([CVE-2003-0078])
13784 *Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
13785 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
13786 Martin Vuagnoux (EPFL, Ilion)*
13788 ### Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
13790 * New function OPENSSL_cleanse(), which is used to cleanse a section of
13791 memory from its contents. This is done with a counter that will
13792 place alternating values in each byte. This can be used to solve
13793 two issues: 1) the removal of calls to memset() by highly optimizing
13794 compilers, and 2) cleansing with other values than 0, since those can
13795 be read through on certain media, for example a swap space on disk.
13799 * Bugfix: client side session caching did not work with external caching,
13800 because the session->cipher setting was not restored when reloading
13801 from the external cache. This problem was masked, when
13802 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
13803 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
13807 * Fix client_certificate (ssl/s2_clnt.c): The permissible total
13808 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
13810 *Zeev Lieber <zeev-l@yahoo.com>*
13812 * Undo an undocumented change introduced in 0.9.6e which caused
13813 repeated calls to OpenSSL_add_all_ciphers() and
13814 OpenSSL_add_all_digests() to be ignored, even after calling
13819 * Change the default configuration reader to deal with last line not
13820 being properly terminated.
13824 * Change X509_NAME_cmp() so it applies the special rules on handling
13825 DN values that are of type PrintableString, as well as RDNs of type
13826 emailAddress where the value has the type ia5String.
13828 *stefank@valicert.com via Richard Levitte*
13830 * Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
13831 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
13832 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
13833 the bitwise-OR of the two for use by the majority of applications
13834 wanting this behaviour, and update the docs. The documented
13835 behaviour and actual behaviour were inconsistent and had been
13836 changing anyway, so this is more a bug-fix than a behavioural
13839 *Geoff Thorpe, diagnosed by Nadav Har'El*
13841 * Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
13842 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
13846 * Fix initialization code race conditions in
13847 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
13848 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
13849 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
13850 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
13851 ssl2_get_cipher_by_char(),
13852 ssl3_get_cipher_by_char().
13854 *Patrick McCormick <patrick@tellme.com>, Bodo Moeller*
13856 * Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
13857 the cached sessions are flushed, as the remove_cb() might use ex_data
13858 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
13859 (see [openssl.org #212]).
13861 *Geoff Thorpe, Lutz Jaenicke*
13863 * Fix typo in OBJ_txt2obj which incorrectly passed the content
13864 length, instead of the encoding length to d2i_ASN1_OBJECT.
13868 ### Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
13870 * [In 0.9.6g-engine release:]
13871 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use `_stdcall`).
13873 *Lynn Gazis <lgazis@rainbow.com>*
13875 ### Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
13877 * Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
13878 and get fix the header length calculation.
13879 *Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
13880 Alon Kantor <alonk@checkpoint.com> (and others), Steve Henson*
13882 * Use proper error handling instead of 'assertions' in buffer
13883 overflow checks added in 0.9.6e. This prevents DoS (the
13884 assertions could call abort()).
13886 *Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller*
13888 ### Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
13890 * Add various sanity checks to asn1_get_length() to reject
13891 the ASN1 length bytes if they exceed sizeof(long), will appear
13892 negative or the content length exceeds the length of the
13895 *Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>*
13897 * Fix cipher selection routines: ciphers without encryption had no flags
13898 for the cipher strength set and where therefore not handled correctly
13899 by the selection routines (PR #130).
13903 * Fix EVP_dsa_sha macro.
13908 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
13909 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
13910 that was added in OpenSSL 0.9.6d.
13912 As the countermeasure turned out to be incompatible with some
13913 broken SSL implementations, the new option is part of SSL_OP_ALL.
13914 SSL_OP_ALL is usually employed when compatibility with weird SSL
13915 implementations is desired (e.g. '-bugs' option to 's_client' and
13916 's_server'), so the new option is automatically set in many
13921 * Changes in security patch:
13923 Changes marked "(CHATS)" were sponsored by the Defense Advanced
13924 Research Projects Agency (DARPA) and Air Force Research Laboratory,
13925 Air Force Materiel Command, USAF, under agreement number
13928 * Add various sanity checks to asn1_get_length() to reject
13929 the ASN1 length bytes if they exceed sizeof(long), will appear
13930 negative or the content length exceeds the length of the
13931 supplied buffer. ([CVE-2002-0659])
13933 *Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>*
13935 * Assertions for various potential buffer overflows, not known to
13936 happen in practice.
13938 *Ben Laurie (CHATS)*
13940 * Various temporary buffers to hold ASCII versions of integers were
13941 too small for 64 bit platforms. ([CVE-2002-0655])
13942 *Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>*
13944 * Remote buffer overflow in SSL3 protocol - an attacker could
13945 supply an oversized session ID to a client. ([CVE-2002-0656])
13947 *Ben Laurie (CHATS)*
13949 * Remote buffer overflow in SSL2 protocol - an attacker could
13950 supply an oversized client master key. ([CVE-2002-0656])
13952 *Ben Laurie (CHATS)*
13954 ### Changes between 0.9.6c and 0.9.6d [9 May 2002]
13956 * Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
13957 encoded as NULL) with id-dsa-with-sha1.
13959 *Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller*
13961 * Check various `X509_...()` return values in `apps/req.c`.
13963 *Nils Larsch <nla@trustcenter.de>*
13965 * Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
13966 an end-of-file condition would erroneously be flagged, when the CRLF
13967 was just at the end of a processed block. The bug was discovered when
13968 processing data through a buffering memory BIO handing the data to a
13969 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
13970 <ptsekov@syntrex.com> and Nedelcho Stanev.
13974 * Implement a countermeasure against a vulnerability recently found
13975 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
13976 before application data chunks to avoid the use of known IVs
13977 with data potentially chosen by the attacker.
13981 * Fix length checks in ssl3_get_client_hello().
13985 * TLS/SSL library bugfix: use s->s3->in_read_app_data differently
13986 to prevent ssl3_read_internal() from incorrectly assuming that
13987 ssl3_read_bytes() found application data while handshake
13988 processing was enabled when in fact s->s3->in_read_app_data was
13989 merely automatically cleared during the initial handshake.
13991 *Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>*
13993 * Fix object definitions for Private and Enterprise: they were not
13994 recognized in their shortname (=lowercase) representation. Extend
13995 obj_dat.pl to issue an error when using undefined keywords instead
13996 of silently ignoring the problem (Svenning Sorensen
13997 <sss@sss.dnsalias.net>).
14001 * Fix DH_generate_parameters() so that it works for 'non-standard'
14002 generators, i.e. generators other than 2 and 5. (Previously, the
14003 code did not properly initialise the 'add' and 'rem' values to
14004 BN_generate_prime().)
14006 In the new general case, we do not insist that 'generator' is
14007 actually a primitive root: This requirement is rather pointless;
14008 a generator of the order-q subgroup is just as good, if not
14013 * Map new X509 verification errors to alerts. Discovered and submitted by
14014 Tom Wu <tom@arcot.com>.
14018 * Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
14019 returning non-zero before the data has been completely received
14020 when using non-blocking I/O.
14022 *Bodo Moeller; problem pointed out by John Hughes*
14024 * Some of the ciphers missed the strength entry (SSL_LOW etc).
14026 *Ben Laurie, Lutz Jaenicke*
14028 * Fix bug in SSL_clear(): bad sessions were not removed (found by
14029 Yoram Zahavi <YoramZ@gilian.com>).
14033 * Add information about CygWin 1.3 and on, and preserve proper
14034 configuration for the versions before that.
14036 *Corinna Vinschen <vinschen@redhat.com> and Richard Levitte*
14038 * Make removal from session cache (SSL_CTX_remove_session()) more robust:
14039 check whether we deal with a copy of a session and do not delete from
14040 the cache in this case. Problem reported by "Izhar Shoshani Levi"
14041 <izhar@checkpoint.com>.
14045 * Do not store session data into the internal session cache, if it
14046 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
14047 flag is set). Proposed by Aslam <aslam@funk.com>.
14051 * Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
14056 * [In 0.9.6d-engine release:]
14057 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
14059 *Toomas Kiisk <vix@cyber.ee> via Richard Levitte*
14061 * Add the configuration target linux-s390x.
14063 *Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte*
14065 * The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
14066 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
14067 variable as an indication that a ClientHello message has been
14068 received. As the flag value will be lost between multiple
14069 invocations of ssl3_accept when using non-blocking I/O, the
14070 function may not be aware that a handshake has actually taken
14071 place, thus preventing a new session from being added to the
14074 To avoid this problem, we now set s->new_session to 2 instead of
14075 using a local variable.
14077 *Lutz Jaenicke, Bodo Moeller*
14079 * Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
14080 if the SSL_R_LENGTH_MISMATCH error is detected.
14082 *Geoff Thorpe, Bodo Moeller*
14084 * New 'shared_ldflag' column in Configure platform table.
14088 * Fix EVP_CIPHER_mode macro.
14090 *"Dan S. Camper" <dan@bti.net>*
14092 * Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
14093 type, we must throw them away by setting rr->length to 0.
14095 *D P Chang <dpc@qualys.com>*
14097 ### Changes between 0.9.6b and 0.9.6c [21 dec 2001]
14099 * Fix BN_rand_range bug pointed out by Dominikus Scherkl
14100 <Dominikus.Scherkl@biodata.com>. (The previous implementation
14101 worked incorrectly for those cases where range = `10..._2` and
14102 `3*range` is two bits longer than range.)
14106 * Only add signing time to PKCS7 structures if it is not already
14111 * Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
14112 OBJ_ld_ce should be OBJ_id_ce.
14113 Also some ip-pda OIDs in crypto/objects/objects.txt were
14114 incorrect (cf. RFC 3039).
14116 *Matt Cooper, Frederic Giudicelli, Bodo Moeller*
14118 * Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
14119 returns early because it has nothing to do.
14121 *Andy Schneider <andy.schneider@bjss.co.uk>*
14123 * [In 0.9.6c-engine release:]
14124 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
14126 *Andy Schneider <andy.schneider@bjss.co.uk>*
14128 * [In 0.9.6c-engine release:]
14129 Add support for Cryptographic Appliance's keyserver technology.
14130 (Use engine 'keyclient')
14132 *Cryptographic Appliances and Geoff Thorpe*
14134 * Add a configuration entry for OS/390 Unix. The C compiler 'c89'
14135 is called via tools/c89.sh because arguments have to be
14136 rearranged (all '-L' options must appear before the first object
14139 *Richard Shapiro <rshapiro@abinitio.com>*
14141 * [In 0.9.6c-engine release:]
14142 Add support for Broadcom crypto accelerator cards, backported
14145 *Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox*
14147 * [In 0.9.6c-engine release:]
14148 Add support for SureWare crypto accelerator cards from
14149 Baltimore Technologies. (Use engine 'sureware')
14151 *Baltimore Technologies and Mark Cox*
14153 * [In 0.9.6c-engine release:]
14154 Add support for crypto accelerator cards from Accelerated
14155 Encryption Processing, www.aep.ie. (Use engine 'aep')
14157 *AEP Inc. and Mark Cox*
14159 * Add a configuration entry for gcc on UnixWare.
14161 *Gary Benson <gbenson@redhat.com>*
14163 * Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
14164 messages are stored in a single piece (fixed-length part and
14165 variable-length part combined) and fix various bugs found on the way.
14169 * Disable caching in BIO_gethostbyname(), directly use gethostbyname()
14170 instead. BIO_gethostbyname() does not know what timeouts are
14171 appropriate, so entries would stay in cache even when they have
14173 *Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>*
14175 * Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
14176 faced with a pathologically small ClientHello fragment that does
14177 not contain client_version: Instead of aborting with an error,
14178 simply choose the highest available protocol version (i.e.,
14179 TLS 1.0 unless it is disabled). In practice, ClientHello
14180 messages are never sent like this, but this change gives us
14181 strictly correct behaviour at least for TLS.
14185 * Fix SSL handshake functions and SSL_clear() such that SSL_clear()
14186 never resets s->method to s->ctx->method when called from within
14187 one of the SSL handshake functions.
14189 *Bodo Moeller; problem pointed out by Niko Baric*
14191 * In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
14192 (sent using the client's version number) if client_version is
14193 smaller than the protocol version in use. Also change
14194 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
14195 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
14196 the client will at least see that alert.
14200 * Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
14205 * Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
14206 client receives HelloRequest while in a handshake.
14208 *Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>*
14210 * Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
14211 should end in 'break', not 'goto end' which circumvents various
14212 cleanups done in state SSL_ST_OK. But session related stuff
14213 must be disabled for SSL_ST_OK in the case that we just sent a
14216 Also avoid some overhead by not calling ssl_init_wbio_buffer()
14217 before just sending a HelloRequest.
14219 *Bodo Moeller, Eric Rescorla <ekr@rtfm.com>*
14221 * Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
14222 reveal whether illegal block cipher padding was found or a MAC
14223 verification error occurred. (Neither SSLerr() codes nor alerts
14224 are directly visible to potential attackers, but the information
14225 may leak via logfiles.)
14227 Similar changes are not required for the SSL 2.0 implementation
14228 because the number of padding bytes is sent in clear for SSL 2.0,
14229 and the extra bytes are just ignored. However ssl/s2_pkt.c
14230 failed to verify that the purported number of padding bytes is in
14235 * Add OpenUNIX-8 support including shared libraries
14236 (Boyd Lynn Gerber <gerberb@zenez.com>).
14240 * Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
14241 'wristwatch attack' using huge encoding parameters (cf.
14242 James H. Manger's CRYPTO 2001 paper). Note that the
14243 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
14244 encoding parameters and hence was not vulnerable.
14248 * BN_sqr() bug fix.
14250 *Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>*
14252 * Rabin-Miller test analyses assume uniformly distributed witnesses,
14253 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
14254 followed by modular reduction.
14256 *Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>*
14258 * Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
14259 equivalent based on BN_pseudo_rand() instead of BN_rand().
14263 * s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
14264 This function was broken, as the check for a new client hello message
14265 to handle SGC did not allow these large messages.
14266 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
14270 * Add alert descriptions for TLSv1 to `SSL_alert_desc_string[_long]()`.
14274 * Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
14275 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
14279 * Rework the configuration and shared library support for Tru64 Unix.
14280 The configuration part makes use of modern compiler features and
14281 still retains old compiler behavior for those that run older versions
14282 of the OS. The shared library support part includes a variant that
14283 uses the RPATH feature, and is available through the special
14284 configuration target "alpha-cc-rpath", which will never be selected
14287 *Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte*
14289 * In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
14290 with the same message size as in ssl3_get_certificate_request().
14291 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
14292 messages might inadvertently be reject as too long.
14294 *Petr Lampa <lampa@fee.vutbr.cz>*
14296 * Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
14300 * Modified SSL library such that the verify_callback that has been set
14301 specifically for an SSL object with SSL_set_verify() is actually being
14302 used. Before the change, a verify_callback set with this function was
14303 ignored and the verify_callback() set in the SSL_CTX at the time of
14304 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
14305 to allow the necessary settings.
14309 * Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
14310 explicitly to NULL, as at least on Solaris 8 this seems not always to be
14311 done automatically (in contradiction to the requirements of the C
14312 standard). This made problems when used from OpenSSH.
14316 * In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
14317 dh->length and always used
14319 BN_rand_range(priv_key, dh->p).
14321 BN_rand_range() is not necessary for Diffie-Hellman, and this
14322 specific range makes Diffie-Hellman unnecessarily inefficient if
14323 dh->length (recommended exponent length) is much smaller than the
14324 length of dh->p. We could use BN_rand_range() if the order of
14325 the subgroup was stored in the DH structure, but we only have
14330 BN_rand(priv_key, l, ...)
14332 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
14339 RSA_eay_public_encrypt
14340 RSA_eay_private_decrypt
14341 RSA_eay_private_encrypt (signing)
14342 RSA_eay_public_decrypt (signature verification)
14344 (default implementations for RSA_public_encrypt,
14345 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
14346 always reject numbers >= n.
14350 * In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
14351 to synchronize access to 'locking_thread'. This is necessary on
14352 systems where access to 'locking_thread' (an 'unsigned long'
14353 variable) is not atomic.
14357 * In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
14358 *before* setting the 'crypto_lock_rand' flag. The previous code had
14359 a race condition if 0 is a valid thread ID.
14361 *Travis Vitek <vitek@roguewave.com>*
14363 * Add support for shared libraries under Irix.
14365 *Albert Chin-A-Young <china@thewrittenword.com>*
14367 * Add configuration option to build on Linux on both big-endian and
14368 little-endian MIPS.
14370 *Ralf Baechle <ralf@uni-koblenz.de>*
14372 * Add the possibility to create shared libraries on HP-UX.
14376 ### Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
14378 * Change ssleay_rand_bytes (crypto/rand/md_rand.c)
14379 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
14380 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
14381 PRNG state recovery was possible based on the output of
14382 one PRNG request appropriately sized to gain knowledge on
14383 'md' followed by enough consecutive 1-byte PRNG requests
14384 to traverse all of 'state'.
14386 1. When updating 'md_local' (the current thread's copy of 'md')
14387 during PRNG output generation, hash all of the previous
14388 'md_local' value, not just the half used for PRNG output.
14390 2. Make the number of bytes from 'state' included into the hash
14391 independent from the number of PRNG bytes requested.
14393 The first measure alone would be sufficient to avoid
14394 Markku-Juhani's attack. (Actually it had never occurred
14395 to me that the half of 'md_local' used for chaining was the
14396 half from which PRNG output bytes were taken -- I had always
14397 assumed that the secret half would be used.) The second
14398 measure makes sure that additional data from 'state' is never
14399 mixed into 'md_local' in small portions; this heuristically
14400 further strengthens the PRNG.
14404 * Fix crypto/bn/asm/mips3.s.
14408 * When only the key is given to "enc", the IV is undefined. Print out
14409 an error message in this case.
14413 * Handle special case when X509_NAME is empty in X509 printing routines.
14417 * In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
14418 positive and less than q.
14422 * Don't change `*pointer` in CRYPTO_add_lock() is add_lock_callback is
14423 used: it isn't thread safe and the add_lock_callback should handle
14426 *Paul Rose <Paul.Rose@bridge.com>*
14428 * Verify that incoming data obeys the block size in
14429 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
14435 *Ulf Möller, Bodo Möller*
14437 * The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
14438 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
14439 when fixing the server behaviour for backwards-compatible 'client
14440 hello' messages. (Note that the attack is impractical against
14441 SSL 3.0 and TLS 1.0 anyway because length and version checking
14442 means that the probability of guessing a valid ciphertext is
14443 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
14446 Before 0.9.5, the countermeasure (hide the error by generating a
14447 random 'decryption result') did not work properly because
14448 ERR_clear_error() was missing, meaning that SSL_get_error() would
14449 detect the supposedly ignored error.
14451 Both problems are now fixed.
14455 * In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
14456 (previously it was 1024).
14460 * Fix for compatibility mode trust settings: ignore trust settings
14461 unless some valid trust or reject settings are present.
14465 * Fix for blowfish EVP: its a variable length cipher.
14469 * Fix various bugs related to DSA S/MIME verification. Handle missing
14470 parameters in DSA public key structures and return an error in the
14471 DSA routines if parameters are absent.
14475 * In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
14476 in the current directory if neither $RANDFILE nor $HOME was set.
14477 RAND_file_name() in 0.9.6a returned NULL in this case. This has
14478 caused some confusion to Windows users who haven't defined $HOME.
14479 Thus RAND_file_name() is changed again: e_os.h can define a
14480 DEFAULT_HOME, which will be used if $HOME is not set.
14481 For Windows, we use "C:"; on other platforms, we still require
14482 environment variables.
14484 * Move 'if (!initialized) RAND_poll()' into regions protected by
14485 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
14486 having multiple threads call RAND_poll() concurrently.
14490 * In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
14491 combination of a flag and a thread ID variable.
14492 Otherwise while one thread is in ssleay_rand_bytes (which sets the
14493 flag), *other* threads can enter ssleay_add_bytes without obeying
14494 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
14495 that they do not hold after the first thread unsets add_do_not_lock).
14499 * Change bctest again: '-x' expressions are not available in all
14500 versions of 'test'.
14504 ### Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
14506 * Fix a couple of memory leaks in PKCS7_dataDecode()
14508 *Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>*
14510 * Change Configure and Makefiles to provide EXE_EXT, which will contain
14511 the default extension for executables, if any. Also, make the perl
14512 scripts that use symlink() to test if it really exists and use "cp"
14513 if it doesn't. All this made OpenSSL compilable and installable in
14518 * Fix for asn1_GetSequence() for indefinite length constructed data.
14519 If SEQUENCE is length is indefinite just set c->slen to the total
14520 amount of data available.
14522 *Steve Henson, reported by shige@FreeBSD.org*
14524 *This change does not apply to 0.9.7.*
14526 * Change bctest to avoid here-documents inside command substitution
14527 (workaround for FreeBSD /bin/sh bug).
14528 For compatibility with Ultrix, avoid shell functions (introduced
14529 in the bctest version that searches along $PATH).
14533 * Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
14534 with des_encrypt() defined on some operating systems, like Solaris
14539 * Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
14540 On the Importance of Eliminating Errors in Cryptographic
14541 Computations, J. Cryptology 14 (2001) 2, 101-119,
14542 <http://theory.stanford.edu/~dabo/papers/faults.ps.gz>).
14546 * MIPS assembler BIGNUM division bug fix.
14550 * Disabled incorrect Alpha assembler code.
14554 * Fix PKCS#7 decode routines so they correctly update the length
14555 after reading an EOC for the EXPLICIT tag.
14559 *This change does not apply to 0.9.7.*
14561 * Fix bug in PKCS#12 key generation routines. This was triggered
14562 if a 3DES key was generated with a 0 initial byte. Include
14563 PKCS12_BROKEN_KEYGEN compilation option to retain the old
14564 (but broken) behaviour.
14568 * Enhance bctest to search for a working bc along $PATH and print
14571 *Tim Rice <tim@multitalents.net> via Richard Levitte*
14573 * Fix memory leaks in err.c: free err_data string if necessary;
14574 don't write to the wrong index in ERR_set_error_data.
14578 * Implement ssl23_peek (analogous to ssl23_read), which previously
14583 * Replace rdtsc with `_emit` statements for VC++ version 5.
14585 *Jeremy Cooper <jeremy@baymoo.org>*
14587 * Make it possible to reuse SSLv2 sessions.
14591 * In copy_email() check for >= 0 as a return value for
14592 X509_NAME_get_index_by_NID() since 0 is a valid index.
14594 *Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>*
14596 * Avoid coredump with unsupported or invalid public keys by checking if
14597 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
14598 PKCS7_verify() fails with non detached data.
14602 * Don't use getenv in library functions when run as setuid/setgid.
14603 New function OPENSSL_issetugid().
14607 * Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
14608 due to incorrect handling of multi-threading:
14610 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
14612 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
14614 3. Count how many times MemCheck_off() has been called so that
14615 nested use can be treated correctly. This also avoids
14616 inband-signalling in the previous code (which relied on the
14617 assumption that thread ID 0 is impossible).
14621 * Add "-rand" option also to s_client and s_server.
14625 * Fix CPU detection on Irix 6.x.
14626 *Kurt Hockenbury <khockenb@stevens-tech.edu> and
14627 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>*
14629 * Fix X509_NAME bug which produced incorrect encoding if X509_NAME
14634 *This change does not apply to 0.9.7.*
14636 * Use the cached encoding of an X509_NAME structure rather than
14637 copying it. This is apparently the reason for the libsafe "errors"
14638 but the code is actually correct.
14642 * Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
14643 Bleichenbacher's DSA attack.
14644 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
14645 to be set and top=0 forces the highest bit to be set; top=-1 is new
14646 and leaves the highest bit random.
14648 *Ulf Moeller, Bodo Moeller*
14650 * In the `NCONF_...`-based implementations for `CONF_...` queries
14651 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
14652 a temporary CONF structure with the data component set to NULL
14653 (which gives segmentation faults in lh_retrieve).
14654 Instead, use NULL for the CONF pointer in CONF_get_string and
14655 CONF_get_number (which may use environment variables) and directly
14656 return NULL from CONF_get_section.
14660 * Fix potential buffer overrun for EBCDIC.
14664 * Tolerate nonRepudiation as being valid for S/MIME signing and certSign
14665 keyUsage if basicConstraints absent for a CA.
14669 * Make SMIME_write_PKCS7() write mail header values with a format that
14670 is more generally accepted (no spaces before the semicolon), since
14671 some programs can't parse those values properly otherwise. Also make
14672 sure BIO's that break lines after each write do not create invalid
14677 * Make the CRL encoding routines work with empty SEQUENCE OF. The
14678 macros previously used would not encode an empty SEQUENCE OF
14679 and break the signature.
14683 *This change does not apply to 0.9.7.*
14685 * Zero the premaster secret after deriving the master secret in
14690 * Add some EVP_add_digest_alias registrations (as found in
14691 OpenSSL_add_all_digests()) to SSL_library_init()
14692 aka OpenSSL_add_ssl_algorithms(). This provides improved
14693 compatibility with peers using X.509 certificates
14694 with unconventional AlgorithmIdentifier OIDs.
14698 * Fix for Irix with NO_ASM.
14700 *"Bruce W. Forsberg" <bruce.forsberg@baesystems.com>*
14702 * ./config script fixes.
14704 *Ulf Moeller, Richard Levitte*
14706 * Fix 'openssl passwd -1'.
14710 * Change PKCS12_key_gen_asc() so it can cope with non null
14711 terminated strings whose length is passed in the passlen
14712 parameter, for example from PEM callbacks. This was done
14713 by adding an extra length parameter to asc2uni().
14715 *Steve Henson, reported by <oddissey@samsung.co.kr>*
14717 * Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
14718 call failed, free the DSA structure.
14722 * Fix to uni2asc() to cope with zero length Unicode strings.
14723 These are present in some PKCS#12 files.
14727 * Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
14728 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
14729 when writing a 32767 byte record.
14731 *Bodo Moeller; problem reported by Eric Day <eday@concentric.net>*
14733 * In `RSA_eay_public_{en,ed}crypt` and RSA_eay_mod_exp (rsa_eay.c),
14734 obtain lock CRYPTO_LOCK_RSA before setting `rsa->_method_mod_{n,p,q}`.
14736 (RSA objects have a reference count access to which is protected
14737 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
14738 so they are meant to be shared between threads.)
14739 *Bodo Moeller, Geoff Thorpe; original patch submitted by
14740 "Reddie, Steven" <Steven.Reddie@ca.com>*
14742 * Fix a deadlock in CRYPTO_mem_leaks().
14746 * Use better test patterns in bntest.
14750 * rand_win.c fix for Borland C.
14754 * BN_rshift bugfix for n == 0.
14758 * Add a 'bctest' script that checks for some known 'bc' bugs
14759 so that 'make test' does not abort just because 'bc' is broken.
14763 * Store verify_result within SSL_SESSION also for client side to
14764 avoid potential security hole. (Re-used sessions on the client side
14765 always resulted in verify_result==X509_V_OK, not using the original
14766 result of the server certificate verification.)
14770 * Fix ssl3_pending: If the record in s->s3->rrec is not of type
14771 SSL3_RT_APPLICATION_DATA, return 0.
14772 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
14777 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
14778 releases, have been re-implemented by renaming the previous
14779 implementations of ssl2_read and ssl3_read to ssl2_read_internal
14780 and ssl3_read_internal, respectively, and adding 'peek' parameters
14781 to them. The new ssl[23]_{read,peek} functions are calls to
14782 ssl[23]_read_internal with the 'peek' flag set appropriately.
14783 A 'peek' parameter has also been added to ssl3_read_bytes, which
14784 does the actual work for ssl3_read_internal.
14788 * Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
14789 the method-specific "init()" handler. Also clean up ex_data after
14790 calling the method-specific "finish()" handler. Previously, this was
14791 happening the other way round.
14795 * Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
14796 The previous value, 12, was not always sufficient for BN_mod_exp().
14800 * Make sure that shared libraries get the internal name engine with
14801 the full version number and not just 0. This should mark the
14802 shared libraries as not backward compatible. Of course, this should
14803 be changed again when we can guarantee backward binary compatibility.
14807 * Fix typo in get_cert_by_subject() in by_dir.c
14809 *Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>*
14811 * Rework the system to generate shared libraries:
14813 - Make note of the expected extension for the shared libraries and
14814 if there is a need for symbolic links from for example libcrypto.so.0
14815 to libcrypto.so.0.9.7. There is extended info in Configure for
14818 - Make as few rebuilds of the shared libraries as possible.
14820 - Still avoid linking the OpenSSL programs with the shared libraries.
14822 - When installing, install the shared libraries separately from the
14827 * Fix SSL_CTX_set_read_ahead macro to actually use its argument.
14829 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
14830 and not in SSL_clear because the latter is also used by the
14831 accept/connect functions; previously, the settings made by
14832 SSL_set_read_ahead would be lost during the handshake.
14834 *Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>*
14836 * Correct util/mkdef.pl to be selective about disabled algorithms.
14837 Previously, it would create entries for disabled algorithms no
14842 * Added several new manual pages for SSL_* function.
14846 ### Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
14848 * In ssl23_get_client_hello, generate an error message when faced
14849 with an initial SSL 3.0/TLS record that is too small to contain the
14850 first two bytes of the ClientHello message, i.e. client_version.
14851 (Note that this is a pathologic case that probably has never happened
14852 in real life.) The previous approach was to use the version number
14853 from the record header as a substitute; but our protocol choice
14854 should not depend on that one because it is not authenticated
14855 by the Finished messages.
14859 * More robust randomness gathering functions for Windows.
14861 *Jeffrey Altman <jaltman@columbia.edu>*
14863 * For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
14864 not set then we don't setup the error code for issuer check errors
14865 to avoid possibly overwriting other errors which the callback does
14866 handle. If an application does set the flag then we assume it knows
14867 what it is doing and can handle the new informational codes
14872 * Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
14873 a general "ANY" type, as such it should be able to decode anything
14874 including tagged types. However it didn't check the class so it would
14875 wrongly interpret tagged types in the same way as their universal
14876 counterpart and unknown types were just rejected. Changed so that the
14877 tagged and unknown types are handled in the same way as a SEQUENCE:
14878 that is the encoding is stored intact. There is also a new type
14879 "V_ASN1_OTHER" which is used when the class is not universal, in this
14880 case we have no idea what the actual type is so we just lump them all
14885 * On VMS, stdout may very well lead to a file that is written to
14886 in a record-oriented fashion. That means that every write() will
14887 write a separate record, which will be read separately by the
14888 programs trying to read from it. This can be very confusing.
14890 The solution is to put a BIO filter in the way that will buffer
14891 text until a linefeed is reached, and then write everything a
14892 line at a time, so every record written will be an actual line,
14893 not chunks of lines and not (usually doesn't happen, but I've
14894 seen it once) several lines in one record. BIO_f_linebuffer() is
14897 Currently, it's a VMS-only method, because that's where it has
14898 been tested well enough.
14902 * Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
14903 it can return incorrect results.
14904 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
14905 but it was in 0.9.6-beta[12].)
14909 * Disable the check for content being present when verifying detached
14910 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
14911 include zero length content when signing messages.
14915 * New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
14916 BIO_ctrl (for BIO pairs).
14920 * Add DSO method for VMS.
14924 * Bug fix: Montgomery multiplication could produce results with the
14929 * Add RPM specification openssl.spec and modify it to build three
14930 packages. The default package contains applications, application
14931 documentation and run-time libraries. The devel package contains
14932 include files, static libraries and function documentation. The
14933 doc package contains the contents of the doc directory. The original
14934 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
14938 * Add a large number of documentation files for many SSL routines.
14940 *Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>*
14942 * Add a configuration entry for Sony News 4.
14944 *NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>*
14946 * Don't set the two most significant bits to one when generating a
14947 random number < q in the DSA library.
14951 * New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
14952 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
14953 the underlying transport is blocking) if a handshake took place.
14954 (The default behaviour is needed by applications such as s_client
14955 and s_server that use select() to determine when to use SSL_read;
14956 but for applications that know in advance when to expect data, it
14957 just makes things more complicated.)
14961 * Add RAND_egd_bytes(), which gives control over the number of bytes read
14966 * Add a few more EBCDIC conditionals that make `req` and `x509`
14967 work better on such systems.
14969 *Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>*
14971 * Add two demo programs for PKCS12_parse() and PKCS12_create().
14972 Update PKCS12_parse() so it copies the friendlyName and the
14973 keyid to the certificates aux info.
14977 * Fix bug in PKCS7_verify() which caused an infinite loop
14978 if there was more than one signature.
14980 *Sven Uszpelkat <su@celocom.de>*
14982 * Major change in util/mkdef.pl to include extra information
14983 about each symbol, as well as presenting variables as well
14984 as functions. This change means that there's n more need
14985 to rebuild the .num files when some algorithms are excluded.
14989 * Allow the verify time to be set by an application,
14990 rather than always using the current time.
14994 * Phase 2 verify code reorganisation. The certificate
14995 verify code now looks up an issuer certificate by a
14996 number of criteria: subject name, authority key id
14997 and key usage. It also verifies self signed certificates
14998 by the same criteria. The main comparison function is
14999 X509_check_issued() which performs these checks.
15001 Lot of changes were necessary in order to support this
15002 without completely rewriting the lookup code.
15004 Authority and subject key identifier are now cached.
15006 The LHASH 'certs' is X509_STORE has now been replaced
15007 by a STACK_OF(X509_OBJECT). This is mainly because an
15008 LHASH can't store or retrieve multiple objects with
15009 the same hash value.
15011 As a result various functions (which were all internal
15012 use only) have changed to handle the new X509_STORE
15013 structure. This will break anything that messed round
15014 with X509_STORE internally.
15016 The functions X509_STORE_add_cert() now checks for an
15017 exact match, rather than just subject name.
15019 The X509_STORE API doesn't directly support the retrieval
15020 of multiple certificates matching a given criteria, however
15021 this can be worked round by performing a lookup first
15022 (which will fill the cache with candidate certificates)
15023 and then examining the cache for matches. This is probably
15024 the best we can do without throwing out X509_LOOKUP
15025 entirely (maybe later...).
15027 The X509_VERIFY_CTX structure has been enhanced considerably.
15029 All certificate lookup operations now go via a get_issuer()
15030 callback. Although this currently uses an X509_STORE it
15031 can be replaced by custom lookups. This is a simple way
15032 to bypass the X509_STORE hackery necessary to make this
15033 work and makes it possible to use more efficient techniques
15034 in future. A very simple version which uses a simple
15035 STACK for its trusted certificate store is also provided
15036 using X509_STORE_CTX_trusted_stack().
15038 The verify_cb() and verify() callbacks now have equivalents
15039 in the X509_STORE_CTX structure.
15041 X509_STORE_CTX also has a 'flags' field which can be used
15042 to customise the verify behaviour.
15046 * Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
15047 excludes S/MIME capabilities.
15051 * When a certificate request is read in keep a copy of the
15052 original encoding of the signed data and use it when outputting
15053 again. Signatures then use the original encoding rather than
15054 a decoded, encoded version which may cause problems if the
15055 request is improperly encoded.
15059 * For consistency with other BIO_puts implementations, call
15060 buffer_write(b, ...) directly in buffer_puts instead of calling
15063 In BIO_puts, increment b->num_write as in BIO_write.
15065 *Peter.Sylvester@EdelWeb.fr*
15067 * Fix BN_mul_word for the case where the word is 0. (We have to use
15068 BN_zero, we may not return a BIGNUM with an array consisting of
15069 words set to zero.)
15073 * Avoid calling abort() from within the library when problems are
15074 detected, except if preprocessor symbols have been defined
15075 (such as REF_CHECK, BN_DEBUG etc.).
15079 * New openssl application 'rsautl'. This utility can be
15080 used for low-level RSA operations. DER public key
15081 BIO/fp routines also added.
15085 * New Configure entry and patches for compiling on QNX 4.
15087 *Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>*
15089 * A demo state-machine implementation was sponsored by
15090 Nuron (<http://www.nuron.com/>) and is now available in
15091 demos/state_machine.
15095 * New options added to the 'dgst' utility for signature
15096 generation and verification.
15100 * Unrecognized PKCS#7 content types are now handled via a
15101 catch all ASN1_TYPE structure. This allows unsupported
15102 types to be stored as a "blob" and an application can
15103 encode and decode it manually.
15107 * Fix various signed/unsigned issues to make a_strex.c
15108 compile under VC++.
15110 *Oscar Jacobsson <oscar.jacobsson@celocom.com>*
15112 * ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
15113 length if passed a buffer. ASN1_INTEGER_to_BN failed
15114 if passed a NULL BN and its argument was negative.
15116 *Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>*
15118 * Modification to PKCS#7 encoding routines to output definite
15119 length encoding. Since currently the whole structures are in
15120 memory there's not real point in using indefinite length
15121 constructed encoding. However if OpenSSL is compiled with
15122 the flag PKCS7_INDEFINITE_ENCODING the old form is used.
15126 * Added BIO_vprintf() and BIO_vsnprintf().
15130 * Added more prefixes to parse for in the strings written
15131 through a logging bio, to cover all the levels that are available
15132 through syslog. The prefixes are now:
15134 PANIC, EMERG, EMR => LOG_EMERG
15135 ALERT, ALR => LOG_ALERT
15136 CRIT, CRI => LOG_CRIT
15137 ERROR, ERR => LOG_ERR
15138 WARNING, WARN, WAR => LOG_WARNING
15139 NOTICE, NOTE, NOT => LOG_NOTICE
15140 INFO, INF => LOG_INFO
15141 DEBUG, DBG => LOG_DEBUG
15143 and as before, if none of those prefixes are present at the
15144 beginning of the string, LOG_ERR is chosen.
15146 On Win32, the `LOG_*` levels are mapped according to this:
15148 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
15149 LOG_WARNING => EVENTLOG_WARNING_TYPE
15150 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
15154 * Made it possible to reconfigure with just the configuration
15155 argument "reconf" or "reconfigure". The command line arguments
15156 are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
15157 and are retrieved from there when reconfiguring.
15163 *Assar Westerlund <assar@sics.se>, Richard Levitte*
15165 * Add the arguments -CAfile and -CApath to the pkcs12 utility.
15169 * The obj_dat.pl script was messing up the sorting of object
15170 names. The reason was that it compared the quoted version
15171 of strings as a result "OCSP" > "OCSP Signing" because
15172 " > SPACE. Changed script to store unquoted versions of
15173 names and add quotes on output. It was also omitting some
15174 names from the lookup table if they were given a default
15175 value (that is if SN is missing it is given the same
15176 value as LN and vice versa), these are now added on the
15177 grounds that if an object has a name we should be able to
15178 look it up. Finally added warning output when duplicate
15179 short or long names are found.
15183 * Changes needed for Tandem NSK.
15185 *Scott Uroff <scott@xypro.com>*
15187 * Fix SSL 2.0 rollback checking: Due to an off-by-one error in
15188 RSA_padding_check_SSLv23(), special padding was never detected
15189 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
15190 version rollback attacks was not effective.
15192 In s23_clnt.c, don't use special rollback-attack detection padding
15193 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
15194 client; similarly, in s23_srvr.c, don't do the rollback check if
15195 SSL 2.0 is the only protocol enabled in the server.
15199 * Make it possible to get hexdumps of unprintable data with 'openssl
15200 asn1parse'. By implication, the functions ASN1_parse_dump() and
15201 BIO_dump_indent() are added.
15205 * New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
15206 these print out strings and name structures based on various
15207 flags including RFC2253 support and proper handling of
15208 multibyte characters. Added options to the 'x509' utility
15209 to allow the various flags to be set.
15213 * Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
15214 Also change the functions X509_cmp_current_time() and
15215 X509_gmtime_adj() work with an ASN1_TIME structure,
15216 this will enable certificates using GeneralizedTime in validity
15217 dates to be checked.
15221 * Make the NEG_PUBKEY_BUG code (which tolerates invalid
15222 negative public key encodings) on by default,
15223 NO_NEG_PUBKEY_BUG can be set to disable it.
15227 * New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
15228 content octets. An i2c_ASN1_OBJECT is unnecessary because
15229 the encoding can be trivially obtained from the structure.
15233 * crypto/err.c locking bugfix: Use write locks (`CRYPTO_w_[un]lock`),
15234 not read locks (`CRYPTO_r_[un]lock`).
15238 * A first attempt at creating official support for shared
15239 libraries through configuration. I've kept it so the
15240 default is static libraries only, and the OpenSSL programs
15241 are always statically linked for now, but there are
15242 preparations for dynamic linking in place.
15243 This has been tested on Linux and Tru64.
15247 * Randomness polling function for Win9x, as described in:
15248 Peter Gutmann, Software Generation of Practically Strong
15253 * Fix so PRNG is seeded in req if using an already existing
15258 * New options to smime application. -inform and -outform
15259 allow alternative formats for the S/MIME message including
15260 PEM and DER. The -content option allows the content to be
15261 specified separately. This should allow things like Netscape
15262 form signing output easier to verify.
15266 * Fix the ASN1 encoding of tags using the 'long form'.
15270 * New ASN1 functions, `i2c_*` and `c2i_*` for INTEGER and BIT
15271 STRING types. These convert content octets to and from the
15272 underlying type. The actual tag and length octets are
15273 already assumed to have been read in and checked. These
15274 are needed because all other string types have virtually
15275 identical handling apart from the tag. By having versions
15276 of the ASN1 functions that just operate on content octets
15277 IMPLICIT tagging can be handled properly. It also allows
15278 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
15279 and ASN1_INTEGER are identical apart from the tag.
15283 * Change the handling of OID objects as follows:
15285 - New object identifiers are inserted in objects.txt, following
15286 the syntax given in [crypto/objects/README.md](crypto/objects/README.md).
15287 - objects.pl is used to process obj_mac.num and create a new
15289 - obj_dat.pl is used to create a new obj_dat.h, using the data in
15292 This is currently kind of a hack, and the perl code in objects.pl
15293 isn't very elegant, but it works as I intended. The simplest way
15294 to check that it worked correctly is to look in obj_dat.h and
15295 check the array nid_objs and make sure the objects haven't moved
15296 around (this is important!). Additions are OK, as well as
15297 consistent name changes.
15301 * Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
15305 * Addition of the command line parameter '-rand file' to 'openssl req'.
15306 The given file adds to whatever has already been seeded into the
15307 random pool through the RANDFILE configuration file option or
15308 environment variable, or the default random state file.
15312 * mkstack.pl now sorts each macro group into lexical order.
15313 Previously the output order depended on the order the files
15314 appeared in the directory, resulting in needless rewriting
15319 * Patches to make OpenSSL compile under Win32 again. Mostly
15320 work arounds for the VC++ problem that it treats func() as
15321 func(void). Also stripped out the parts of mkdef.pl that
15322 added extra typesafe functions: these no longer exist.
15326 * Reorganisation of the stack code. The macros are now all
15327 collected in safestack.h . Each macro is defined in terms of
15328 a "stack macro" of the form `SKM_<name>(type, a, b)`. The
15329 DEBUG_SAFESTACK is now handled in terms of function casts,
15330 this has the advantage of retaining type safety without the
15331 use of additional functions. If DEBUG_SAFESTACK is not defined
15332 then the non typesafe macros are used instead. Also modified the
15333 mkstack.pl script to handle the new form. Needs testing to see
15334 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
15335 the default if no major problems. Similar behaviour for ASN1_SET_OF
15336 and PKCS12_STACK_OF.
15340 * When some versions of IIS use the 'NET' form of private key the
15341 key derivation algorithm is different. Normally MD5(password) is
15342 used as a 128 bit RC4 key. In the modified case
15343 MD5(MD5(password) + "SGCKEYSALT") is used instead. Added some
15344 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
15345 as the old Netscape_RSA functions except they have an additional
15346 'sgckey' parameter which uses the modified algorithm. Also added
15347 an -sgckey command line option to the rsa utility. Thanks to
15348 Adrian Peck <bertie@ncipher.com> for posting details of the modified
15349 algorithm to openssl-dev.
15353 * The evp_local.h macros were using 'c.##kname' which resulted in
15354 invalid expansion on some systems (SCO 5.0.5 for example).
15355 Corrected to 'c.kname'.
15357 *Phillip Porch <root@theporch.com>*
15359 * New X509_get1_email() and X509_REQ_get1_email() functions that return
15360 a STACK of email addresses from a certificate or request, these look
15361 in the subject name and the subject alternative name extensions and
15362 omit any duplicate addresses.
15366 * Re-implement BN_mod_exp2_mont using independent (and larger) windows.
15367 This makes DSA verification about 2 % faster.
15371 * Increase maximum window size in `BN_mod_exp_...` to 6 bits instead of 5
15372 (meaning that now 2^5 values will be precomputed, which is only 4 KB
15373 plus overhead for 1024 bit moduli).
15374 This makes exponentiations about 0.5 % faster for 1024 bit
15375 exponents (as measured by "openssl speed rsa2048").
15379 * Rename memory handling macros to avoid conflicts with other
15381 Malloc => OPENSSL_malloc
15382 Malloc_locked => OPENSSL_malloc_locked
15383 Realloc => OPENSSL_realloc
15384 Free => OPENSSL_free
15388 * New function BN_mod_exp_mont_word for small bases (roughly 15%
15389 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
15393 * CygWin32 support.
15395 *John Jarvie <jjarvie@newsguy.com>*
15397 * The type-safe stack code has been rejigged. It is now only compiled
15398 in when OpenSSL is configured with the DEBUG_SAFESTACK option and
15399 by default all type-specific stack functions are "#define"d back to
15400 standard stack functions. This results in more streamlined output
15401 but retains the type-safety checking possibilities of the original
15406 * The STACK code has been cleaned up, and certain type declarations
15407 that didn't make a lot of sense have been brought in line. This has
15408 also involved a cleanup of sorts in safestack.h to more correctly
15409 map type-safe stack functions onto their plain stack counterparts.
15410 This work has also resulted in a variety of "const"ifications of
15411 lots of the code, especially `_cmp` operations which should normally
15412 be prototyped with "const" parameters anyway.
15416 * When generating bytes for the first time in md_rand.c, 'stir the pool'
15417 by seeding with STATE_SIZE dummy bytes (with zero entropy count).
15418 (The PRNG state consists of two parts, the large pool 'state' and 'md',
15419 where all of 'md' is used each time the PRNG is used, but 'state'
15420 is used only indexed by a cyclic counter. As entropy may not be
15421 well distributed from the beginning, 'md' is important as a
15422 chaining variable. However, the output function chains only half
15423 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
15424 all of 'md', and seeding with STATE_SIZE dummy bytes will result
15425 in all of 'state' being rewritten, with the new values depending
15426 on virtually all of 'md'. This overcomes the 80 bit limitation.)
15430 * In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
15431 the handshake is continued after ssl_verify_cert_chain();
15432 otherwise, if SSL_VERIFY_NONE is set, remaining error codes
15433 can lead to 'unexplainable' connection aborts later.
15435 *Bodo Moeller; problem tracked down by Lutz Jaenicke*
15437 * Major EVP API cipher revision.
15438 Add hooks for extra EVP features. This allows various cipher
15439 parameters to be set in the EVP interface. Support added for variable
15440 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
15441 setting of RC2 and RC5 parameters.
15443 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
15446 Remove lots of duplicated code from the EVP library. For example *every*
15447 cipher init() function handles the 'iv' in the same way according to the
15448 cipher mode. They also all do nothing if the 'key' parameter is NULL and
15449 for CFB and OFB modes they zero ctx->num.
15451 New functionality allows removal of S/MIME code RC2 hack.
15453 Most of the routines have the same form and so can be declared in terms
15456 By shifting this to the top level EVP_CipherInit() it can be removed from
15457 all individual ciphers. If the cipher wants to handle IVs or keys
15458 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
15461 Change lots of functions like EVP_EncryptUpdate() to now return a
15462 value: although software versions of the algorithms cannot fail
15463 any installed hardware versions can.
15467 * Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
15468 this option is set, tolerate broken clients that send the negotiated
15469 protocol version number instead of the requested protocol version
15474 * Call dh_tmp_cb (set by `..._TMP_DH_CB`) with correct 'is_export' flag;
15475 i.e. non-zero for export ciphersuites, zero otherwise.
15476 Previous versions had this flag inverted, inconsistent with
15477 rsa_tmp_cb (..._TMP_RSA_CB).
15479 *Bodo Moeller; problem reported by Amit Chopra*
15481 * Add missing DSA library text string. Work around for some IIS
15482 key files with invalid SEQUENCE encoding.
15486 * Add a document (doc/standards.txt) that list all kinds of standards
15487 and so on that are implemented in OpenSSL.
15491 * Enhance c_rehash script. Old version would mishandle certificates
15492 with the same subject name hash and wouldn't handle CRLs at all.
15493 Added -fingerprint option to crl utility, to support new c_rehash
15498 * Eliminate non-ANSI declarations in crypto.h and stack.h.
15502 * Fix for SSL server purpose checking. Server checking was
15503 rejecting certificates which had extended key usage present
15504 but no ssl client purpose.
15506 *Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>*
15508 * Make PKCS#12 code work with no password. The PKCS#12 spec
15509 is a little unclear about how a blank password is handled.
15510 Since the password in encoded as a BMPString with terminating
15511 double NULL a zero length password would end up as just the
15512 double NULL. However no password at all is different and is
15513 handled differently in the PKCS#12 key generation code. NS
15514 treats a blank password as zero length. MSIE treats it as no
15515 password on export: but it will try both on import. We now do
15516 the same: PKCS12_parse() tries zero length and no password if
15517 the password is set to "" or NULL (NULL is now a valid password:
15518 it wasn't before) as does the pkcs12 application.
15522 * Bugfixes in `apps/x509.c`: Avoid a memory leak; and don't use
15523 perror when PEM_read_bio_X509_REQ fails, the error message must
15524 be obtained from the error queue.
15528 * Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
15529 it in ERR_remove_state if appropriate, and change ERR_get_state
15530 accordingly to avoid race conditions (this is necessary because
15531 thread_hash is no longer constant once set).
15535 * Bugfix for linux-elf makefile.one.
15539 * RSA_get_default_method() will now cause a default
15540 RSA_METHOD to be chosen if one doesn't exist already.
15541 Previously this was only set during a call to RSA_new()
15542 or RSA_new_method(NULL) meaning it was possible for
15543 RSA_get_default_method() to return NULL.
15547 * Added native name translation to the existing DSO code
15548 that will convert (if the flag to do so is set) filenames
15549 that are sufficiently small and have no path information
15550 into a canonical native form. Eg. "blah" converted to
15551 "libblah.so" or "blah.dll" etc.
15555 * New function ERR_error_string_n(e, buf, len) which is like
15556 ERR_error_string(e, buf), but writes at most 'len' bytes
15557 including the 0 terminator. For ERR_error_string_n, 'buf'
15560 *Damien Miller <djm@mindrot.org>, Bodo Moeller*
15562 * CONF library reworked to become more general. A new CONF
15563 configuration file reader "class" is implemented as well as a
15564 new functions (`NCONF_*`, for "New CONF") to handle it. The now
15565 old `CONF_*` functions are still there, but are reimplemented to
15566 work in terms of the new functions. Also, a set of functions
15567 to handle the internal storage of the configuration data is
15568 provided to make it easier to write new configuration file
15569 reader "classes" (I can definitely see something reading a
15570 configuration file in XML format, for example), called `_CONF_*`,
15571 or "the configuration storage API"...
15573 The new configuration file reading functions are:
15575 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
15576 NCONF_get_section, NCONF_get_string, NCONF_get_numbre
15578 NCONF_default, NCONF_WIN32
15580 NCONF_dump_fp, NCONF_dump_bio
15582 NCONF_default and NCONF_WIN32 are method (or "class") choosers,
15583 NCONF_new creates a new CONF object. This works in the same way
15584 as other interfaces in OpenSSL, like the BIO interface.
15585 `NCONF_dump_*` dump the internal storage of the configuration file,
15586 which is useful for debugging. All other functions take the same
15587 arguments as the old `CONF_*` functions with the exception of the
15588 first that must be a `CONF *` instead of a `LHASH *`.
15590 To make it easier to use the new classes with the old `CONF_*` functions,
15591 the function CONF_set_default_method is provided.
15595 * Add '-tls1' option to 'openssl ciphers', which was already
15596 mentioned in the documentation but had not been implemented.
15597 (This option is not yet really useful because even the additional
15598 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
15602 * Initial DSO code added into libcrypto for letting OpenSSL (and
15603 OpenSSL-based applications) load shared libraries and bind to
15604 them in a portable way.
15606 *Geoff Thorpe, with contributions from Richard Levitte*
15608 ### Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
15610 * Make sure _lrotl and _lrotr are only used with MSVC.
15612 * Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
15613 (the default implementation of RAND_status).
15615 * Rename openssl x509 option '-crlext', which was added in 0.9.5,
15616 to '-clrext' (= clear extensions), as intended and documented.
15617 *Bodo Moeller; inconsistency pointed out by Michael Attili
15618 <attili@amaxo.com>*
15620 * Fix for HMAC. It wasn't zeroing the rest of the block if the key length
15621 was larger than the MD block size.
15623 *Steve Henson, pointed out by Yost William <YostW@tce.com>*
15625 * Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
15626 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
15627 using the passed key: if the passed key was a private key the result
15628 of X509_print(), for example, would be to print out all the private key
15633 * des_quad_cksum() byte order bug fix.
15634 *Ulf Möller, using the problem description in krb4-0.9.7, where
15635 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>*
15637 * Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
15640 *Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>*
15642 * For easily testing in shell scripts whether some command
15643 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
15644 returns with exit code 0 iff no command of the given name is available.
15645 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
15646 the output goes to stdout and nothing is printed to stderr.
15647 Additional arguments are always ignored.
15649 Since for each cipher there is a command of the same name,
15650 the 'no-cipher' compilation switches can be tested this way.
15652 ('openssl no-XXX' is not able to detect pseudo-commands such
15653 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
15657 * Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
15661 * For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
15662 is set; it will be thrown away anyway because each handshake creates
15664 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
15665 to parameters -- in previous versions (since OpenSSL 0.9.3) the
15666 'default key' from SSL_CTX_set_tmp_dh would always be lost, meaning
15667 you effectively got SSL_OP_SINGLE_DH_USE when using this macro.
15671 * New s_client option -ign_eof: EOF at stdin is ignored, and
15672 'Q' and 'R' lose their special meanings (quit/renegotiate).
15673 This is part of what -quiet does; unlike -quiet, -ign_eof
15674 does not suppress any output.
15678 * Add compatibility options to the purpose and trust code. The
15679 purpose X509_PURPOSE_ANY is "any purpose" which automatically
15680 accepts a certificate or CA, this was the previous behaviour,
15681 with all the associated security issues.
15683 X509_TRUST_COMPAT is the old trust behaviour: only and
15684 automatically trust self signed roots in certificate store. A
15685 new trust setting X509_TRUST_DEFAULT is used to specify that
15686 a purpose has no associated trust setting and it should instead
15687 use the value in the default purpose.
15691 * Fix the PKCS#8 DSA private key code so it decodes keys again
15692 and fix a memory leak.
15696 * In util/mkerr.pl (which implements 'make errors'), preserve
15697 reason strings from the previous version of the .c file, as
15698 the default to have only downcase letters (and digits) in
15699 automatically generated reasons codes is not always appropriate.
15703 * In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
15704 using strerror. Previously, ERR_reason_error_string() returned
15705 library names as reason strings for SYSerr; but SYSerr is a special
15706 case where small numbers are errno values, not library numbers.
15710 * Add '-dsaparam' option to 'openssl dhparam' application. This
15711 converts DSA parameters into DH parameters. (When creating parameters,
15712 DSA_generate_parameters is used.)
15716 * Include 'length' (recommended exponent length) in C code generated
15717 by 'openssl dhparam -C'.
15721 * The second argument to set_label in perlasm was already being used
15722 so couldn't be used as a "file scope" flag. Moved to third argument
15727 * In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
15728 instead of RAND_bytes for encryption IVs and salts.
15732 * Include RAND_status() into RAND_METHOD instead of implementing
15733 it only for md_rand.c Otherwise replacing the PRNG by calling
15734 RAND_set_rand_method would be impossible.
15738 * Don't let DSA_generate_key() enter an infinite loop if the random
15739 number generation fails.
15743 * New 'rand' application for creating pseudo-random output.
15747 * Added configuration support for Linux/IA64
15749 *Rolf Haberrecker <rolf@suse.de>*
15751 * Assembler module support for Mingw32.
15755 * Shared library support for HPUX (in shlib/).
15757 *Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous*
15759 * Shared library support for Solaris gcc.
15761 *Lutz Behnke <behnke@trustcenter.de>*
15763 ### Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
15765 * PKCS7_encrypt() was adding text MIME headers twice because they
15766 were added manually and by SMIME_crlf_copy().
15770 * In bntest.c don't call BN_rand with zero bits argument.
15772 *Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>*
15774 * BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
15775 case was implemented. This caused BN_div_recp() to fail occasionally.
15779 * Add an optional second argument to the set_label() in the perl
15780 assembly language builder. If this argument exists and is set
15781 to 1 it signals that the assembler should use a symbol whose
15782 scope is the entire file, not just the current function. This
15783 is needed with MASM which uses the format label:: for this scope.
15785 *Steve Henson, pointed out by Peter Runestig <peter@runestig.com>*
15787 * Change the ASN1 types so they are typedefs by default. Before
15788 almost all types were #define'd to ASN1_STRING which was causing
15789 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
15794 * Change names of new functions to the new get1/get0 naming
15795 convention: After 'get1', the caller owns a reference count
15796 and has to call `..._free`; 'get0' returns a pointer to some
15797 data structure without incrementing reference counters.
15798 (Some of the existing 'get' functions increment a reference
15799 counter, some don't.)
15800 Similarly, 'set1' and 'add1' functions increase reference
15801 counters or duplicate objects.
15805 * Allow for the possibility of temp RSA key generation failure:
15806 the code used to assume it always worked and crashed on failure.
15810 * Fix potential buffer overrun problem in BIO_printf().
15811 *Ulf Möller, using public domain code by Patrick Powell; problem
15812 pointed out by David Sacerdote <das33@cornell.edu>*
15814 * Support EGD <http://www.lothar.com/tech/crypto/>. New functions
15815 RAND_egd() and RAND_status(). In the command line application,
15816 the EGD socket can be specified like a seed file using RANDFILE
15821 * Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
15822 Some CAs (e.g. Verisign) distribute certificates in this form.
15826 * Remove the SSL_ALLOW_ADH compile option and set the default cipher
15827 list to exclude them. This means that no special compilation option
15828 is needed to use anonymous DH: it just needs to be included in the
15833 * Change the EVP_MD_CTX_type macro so its meaning consistent with
15834 EVP_MD_type. The old functionality is available in a new macro called
15835 EVP_MD_md(). Change code that uses it and update docs.
15839 * `..._ctrl` functions now have corresponding `..._callback_ctrl` functions
15840 where the `void *` argument is replaced by a function pointer argument.
15841 Previously `void *` was abused to point to functions, which works on
15842 many platforms, but is not correct. As these functions are usually
15843 called by macros defined in OpenSSL header files, most source code
15844 should work without changes.
15848 * `<openssl/opensslconf.h>` (which is created by Configure) now contains
15849 sections with information on -D... compiler switches used for
15850 compiling the library so that applications can see them. To enable
15851 one of these sections, a pre-processor symbol `OPENSSL_..._DEFINES`
15852 must be defined. E.g.,
15853 #define OPENSSL_ALGORITHM_DEFINES
15854 #include <openssl/opensslconf.h>
15855 defines all pertinent `NO_<algo>` symbols, such as NO_IDEA, NO_RSA, etc.
15857 *Richard Levitte, Ulf and Bodo Möller*
15859 * Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
15864 * Change the 'other' type in certificate aux info to a STACK_OF
15865 X509_ALGOR. Although not an AlgorithmIdentifier as such it has
15866 the required ASN1 format: arbitrary types determined by an OID.
15870 * Add some PEM_write_X509_REQ_NEW() functions and a command line
15871 argument to 'req'. This is not because the function is newer or
15872 better than others it just uses the work 'NEW' in the certificate
15873 request header lines. Some software needs this.
15877 * Reorganise password command line arguments: now passwords can be
15878 obtained from various sources. Delete the PEM_cb function and make
15879 it the default behaviour: i.e. if the callback is NULL and the
15880 usrdata argument is not NULL interpret it as a null terminated pass
15881 phrase. If usrdata and the callback are NULL then the pass phrase
15882 is prompted for as usual.
15886 * Add support for the Compaq Atalla crypto accelerator. If it is installed,
15887 the support is automatically enabled. The resulting binaries will
15888 autodetect the card and use it if present.
15890 *Ben Laurie and Compaq Inc.*
15892 * Work around for Netscape hang bug. This sends certificate request
15893 and server done in one record. Since this is perfectly legal in the
15894 SSL/TLS protocol it isn't a "bug" option and is on by default. See
15895 the bugs/SSLv3 entry for more info.
15899 * HP-UX tune-up: new unified configs, HP C compiler bug workaround.
15903 * Add -rand argument to smime and pkcs12 applications and read/write
15908 * New 'passwd' tool for crypt(3) and apr1 password hashes.
15912 * Add command line password options to the remaining applications.
15916 * Bug fix for BN_div_recp() for numerators with an even number of
15921 * More tests in bntest.c, and changed test_bn output.
15925 * ./config recognizes MacOS X now.
15929 * Bug fix for BN_div() when the first words of num and divisor are
15930 equal (it gave wrong results if `(rem=(n1-q*d0)&BN_MASK2) < d0)`.
15934 * Add support for various broken PKCS#8 formats, and command line
15935 options to produce them.
15939 * New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
15940 get temporary BIGNUMs from a BN_CTX.
15944 * Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
15949 * Change the `SSLeay_add_all_*()` functions to `OpenSSL_add_all_*()` and
15950 include a #define from the old name to the new. The original intent
15951 was that statically linked binaries could for example just call
15952 SSLeay_add_all_ciphers() to just add ciphers to the table and not
15953 link with digests. This never worked because SSLeay_add_all_digests()
15954 and SSLeay_add_all_ciphers() were in the same source file so calling
15955 one would link with the other. They are now in separate source files.
15959 * Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
15963 * Use a less unusual form of the Miller-Rabin primality test (it used
15964 a binary algorithm for exponentiation integrated into the Miller-Rabin
15965 loop, our standard modexp algorithms are faster).
15969 * Support for the EBCDIC character set completed.
15971 *Martin Kraemer <Martin.Kraemer@Mch.SNI.De>*
15973 * Source code cleanups: use const where appropriate, eliminate casts,
15974 use `void *` instead of `char *` in lhash.
15978 * Bugfix: ssl3_send_server_key_exchange was not restartable
15979 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
15980 this the server could overwrite ephemeral keys that the client
15985 * Turn DSA_is_prime into a macro that calls BN_is_prime,
15986 using 50 iterations of the Rabin-Miller test.
15988 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
15989 iterations of the Rabin-Miller test as required by the appendix
15990 to FIPS PUB 186[-1]) instead of DSA_is_prime.
15991 As BN_is_prime_fasttest includes trial division, DSA parameter
15992 generation becomes much faster.
15994 This implies a change for the callback functions in DSA_is_prime
15995 and DSA_generate_parameters: The callback function is called once
15996 for each positive witness in the Rabin-Miller test, not just
15997 occasionally in the inner loop; and the parameters to the
15998 callback function now provide an iteration count for the outer
15999 loop rather than for the current invocation of the inner loop.
16000 DSA_generate_parameters additionally can call the callback
16001 function with an 'iteration count' of -1, meaning that a
16002 candidate has passed the trial division test (when q is generated
16003 from an application-provided seed, trial division is skipped).
16007 * New function BN_is_prime_fasttest that optionally does trial
16008 division before starting the Rabin-Miller test and has
16009 an additional BN_CTX * argument (whereas BN_is_prime always
16010 has to allocate at least one BN_CTX).
16011 'callback(1, -1, cb_arg)' is called when a number has passed the
16012 trial division stage.
16016 * Fix for bug in CRL encoding. The validity dates weren't being handled
16021 * New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
16025 * New function BN_pseudo_rand().
16029 * Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
16030 bignum version of BN_from_montgomery() with the working code from
16031 SSLeay 0.9.0 (the word based version is faster anyway), and clean up
16036 * Avoid a race condition in s2_clnt.c (function get_server_hello) that
16037 made it impossible to use the same SSL_SESSION data structure in
16038 SSL2 clients in multiple threads.
16042 * The return value of RAND_load_file() no longer counts bytes obtained
16043 by stat(). RAND_load_file(..., -1) is new and uses the complete file
16044 to seed the PRNG (previously an explicit byte count was required).
16046 *Ulf Möller, Bodo Möller*
16048 * Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
16049 used `char *` instead of `void *` and had casts all over the place.
16053 * Make BN_generate_prime() return NULL on error if ret!=NULL.
16057 * Retain source code compatibility for BN_prime_checks macro:
16058 BN_is_prime(..., BN_prime_checks, ...) now uses
16059 BN_prime_checks_for_size to determine the appropriate number of
16060 Rabin-Miller iterations.
16064 * Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
16065 DH_CHECK_P_NOT_SAFE_PRIME.
16066 (Check if this is true? OpenPGP calls them "strong".)
16070 * Merge the functionality of "dh" and "gendh" programs into a new program
16071 "dhparam". The old programs are retained for now but will handle DH keys
16072 (instead of parameters) in future.
16076 * Make the ciphers, s_server and s_client programs check the return values
16077 when a new cipher list is set.
16081 * Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
16082 ciphers. Before when the 56bit ciphers were enabled the sorting was
16085 The syntax for the cipher sorting has been extended to support sorting by
16086 cipher-strength (using the strength_bits hard coded in the tables).
16087 The new command is `@STRENGTH` (see also `doc/apps/ciphers.pod`).
16089 Fix a bug in the cipher-command parser: when supplying a cipher command
16090 string with an "undefined" symbol (neither command nor alphanumeric
16091 *A-Za-z0-9*, ssl_set_cipher_list used to hang in an endless loop. Now
16092 an error is flagged.
16094 Due to the strength-sorting extension, the code of the
16095 ssl_create_cipher_list() function was completely rearranged. I hope that
16096 the readability was also increased :-)
16098 *Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>*
16100 * Minor change to 'x509' utility. The -CAcreateserial option now uses 1
16101 for the first serial number and places 2 in the serial number file. This
16102 avoids problems when the root CA is created with serial number zero and
16103 the first user certificate has the same issuer name and serial number
16108 * Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
16109 the new code. Add documentation for this stuff.
16113 * Changes to X509_ATTRIBUTE utilities. These have been renamed from
16114 `X509_*()` to `X509at_*()` on the grounds that they don't handle X509
16115 structures and behave in an analogous way to the X509v3 functions:
16116 they shouldn't be called directly but wrapper functions should be used
16119 So we also now have some wrapper functions that call the X509at functions
16120 when passed certificate requests. (TO DO: similar things can be done with
16121 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
16122 things. Some of these need some d2i or i2d and print functionality
16123 because they handle more complex structures.)
16127 * Add missing #ifndefs that caused missing symbols when building libssl
16128 as a shared library without RSA. Use #ifndef NO_SSL2 instead of
16129 NO_RSA in `ssl/s2*.c`.
16131 *Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller*
16133 * Precautions against using the PRNG uninitialized: RAND_bytes() now
16134 has a return value which indicates the quality of the random data
16135 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
16136 error queue. New function RAND_pseudo_bytes() generates output that is
16137 guaranteed to be unique but not unpredictable. RAND_add is like
16138 RAND_seed, but takes an extra argument for an entropy estimate
16139 (RAND_seed always assumes full entropy).
16143 * Do more iterations of Rabin-Miller probable prime test (specifically,
16144 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
16145 instead of only 2 for all lengths; see BN_prime_checks_for_size definition
16146 in crypto/bn/bn_prime.c for the complete table). This guarantees a
16147 false-positive rate of at most 2^-80 for random input.
16151 * Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
16155 * New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
16156 in the 0.9.5 release), this returns the chain
16157 from an X509_CTX structure with a dup of the stack and all
16158 the X509 reference counts upped: so the stack will exist
16159 after X509_CTX_cleanup() has been called. Modify pkcs12.c
16162 Also make SSL_SESSION_print() print out the verify return
16167 * Add manpage for the pkcs12 command. Also change the default
16168 behaviour so MAC iteration counts are used unless the new
16169 -nomaciter option is used. This improves file security and
16170 only older versions of MSIE (4.0 for example) need it.
16174 * Honor the no-xxx Configure options when creating .DEF files.
16178 * Add PKCS#10 attributes to field table: challengePassword,
16179 unstructuredName and unstructuredAddress. These are taken from
16180 draft PKCS#9 v2.0 but are compatible with v1.2 provided no
16181 international characters are used.
16183 More changes to X509_ATTRIBUTE code: allow the setting of types
16184 based on strings. Remove the 'loc' parameter when adding
16185 attributes because these will be a SET OF encoding which is sorted
16190 * Initial changes to the 'req' utility to allow request generation
16191 automation. This will allow an application to just generate a template
16192 file containing all the field values and have req construct the
16195 Initial support for X509_ATTRIBUTE handling. Stacks of these are
16196 used all over the place including certificate requests and PKCS#7
16197 structures. They are currently handled manually where necessary with
16198 some primitive wrappers for PKCS#7. The new functions behave in a
16199 manner analogous to the X509 extension functions: they allow
16200 attributes to be looked up by NID and added.
16202 Later something similar to the X509V3 code would be desirable to
16203 automatically handle the encoding, decoding and printing of the
16204 more complex types. The string types like challengePassword can
16205 be handled by the string table functions.
16207 Also modified the multi byte string table handling. Now there is
16208 a 'global mask' which masks out certain types. The table itself
16209 can use the flag STABLE_NO_MASK to ignore the mask setting: this
16210 is useful when for example there is only one permissible type
16211 (as in countryName) and using the mask might result in no valid
16216 * Clean up 'Finished' handling, and add functions SSL_get_finished and
16217 SSL_get_peer_finished to allow applications to obtain the latest
16218 Finished messages sent to the peer or expected from the peer,
16219 respectively. (SSL_get_peer_finished is usually the Finished message
16220 actually received from the peer, otherwise the protocol will be aborted.)
16222 As the Finished message are message digests of the complete handshake
16223 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
16224 be used for external authentication procedures when the authentication
16225 provided by SSL/TLS is not desired or is not enough.
16229 * Enhanced support for Alpha Linux is added. Now ./config checks if
16230 the host supports BWX extension and if Compaq C is present on the
16231 $PATH. Just exploiting of the BWX extension results in 20-30%
16232 performance kick for some algorithms, e.g. DES and RC4 to mention
16233 a couple. Compaq C in turn generates ~20% faster code for MD5 and
16238 * Add support for MS "fast SGC". This is arguably a violation of the
16239 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
16240 weak crypto and after checking the certificate is SGC a second one
16241 with strong crypto. MS SGC stops the first handshake after receiving
16242 the server certificate message and sends a second client hello. Since
16243 a server will typically do all the time consuming operations before
16244 expecting any further messages from the client (server key exchange
16245 is the most expensive) there is little difference between the two.
16247 To get OpenSSL to support MS SGC we have to permit a second client
16248 hello message after we have sent server done. In addition we have to
16249 reset the MAC if we do get this second client hello.
16253 * Add a function 'd2i_AutoPrivateKey()' this will automatically decide
16254 if a DER encoded private key is RSA or DSA traditional format. Changed
16255 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
16256 format DER encoded private key. Newer code should use PKCS#8 format which
16257 has the key type encoded in the ASN1 structure. Added DER private key
16258 support to pkcs8 application.
16262 * SSL 3/TLS 1 servers now don't request certificates when an anonymous
16263 ciphersuites has been selected (as required by the SSL 3/TLS 1
16264 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
16265 is set, we interpret this as a request to violate the specification
16266 (the worst that can happen is a handshake failure, and 'correct'
16267 behaviour would result in a handshake failure anyway).
16271 * In SSL_CTX_add_session, take into account that there might be multiple
16272 SSL_SESSION structures with the same session ID (e.g. when two threads
16273 concurrently obtain them from an external cache).
16274 The internal cache can handle only one SSL_SESSION with a given ID,
16275 so if there's a conflict, we now throw out the old one to achieve
16280 * Add OIDs for idea and blowfish in CBC mode. This will allow both
16281 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
16282 some routines that use cipher OIDs: some ciphers do not have OIDs
16283 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
16288 * Simplify the trust setting structure and code. Now we just have
16289 two sequences of OIDs for trusted and rejected settings. These will
16290 typically have values the same as the extended key usage extension
16291 and any application specific purposes.
16293 The trust checking code now has a default behaviour: it will just
16294 check for an object with the same NID as the passed id. Functions can
16295 be provided to override either the default behaviour or the behaviour
16296 for a given id. SSL client, server and email already have functions
16297 in place for compatibility: they check the NID and also return "trusted"
16298 if the certificate is self signed.
16302 * Add d2i,i2d bio/fp functions for PrivateKey: these convert the
16303 traditional format into an EVP_PKEY structure.
16307 * Add a password callback function PEM_cb() which either prompts for
16308 a password if usr_data is NULL or otherwise assumes it is a null
16309 terminated password. Allow passwords to be passed on command line
16310 environment or config files in a few more utilities.
16314 * Add a bunch of DER and PEM functions to handle PKCS#8 format private
16315 keys. Add some short names for PKCS#8 PBE algorithms and allow them
16316 to be specified on the command line for the pkcs8 and pkcs12 utilities.
16317 Update documentation.
16321 * Support for ASN1 "NULL" type. This could be handled before by using
16322 ASN1_TYPE but there wasn't any function that would try to read a NULL
16323 and produce an error if it couldn't. For compatibility we also have
16324 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
16325 don't allocate anything because they don't need to.
16329 * Initial support for MacOS is now provided. Examine INSTALL.MacOS
16332 *Andy Polyakov, Roy Woods <roy@centicsystems.ca>*
16334 * Rebuild of the memory allocation routines used by OpenSSL code and
16335 possibly others as well. The purpose is to make an interface that
16336 provide hooks so anyone can build a separate set of allocation and
16337 deallocation routines to be used by OpenSSL, for example memory
16338 pool implementations, or something else, which was previously hard
16339 since Malloc(), Realloc() and Free() were defined as macros having
16340 the values malloc, realloc and free, respectively (except for Win32
16341 compilations). The same is provided for memory debugging code.
16342 OpenSSL already comes with functionality to find memory leaks, but
16343 this gives people a chance to debug other memory problems.
16345 With these changes, a new set of functions and macros have appeared:
16347 CRYPTO_set_mem_debug_functions() [F]
16348 CRYPTO_get_mem_debug_functions() [F]
16349 CRYPTO_dbg_set_options() [F]
16350 CRYPTO_dbg_get_options() [F]
16351 CRYPTO_malloc_debug_init() [M]
16353 The memory debug functions are NULL by default, unless the library
16354 is compiled with CRYPTO_MDEBUG or friends is defined. If someone
16355 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
16356 gives the standard debugging functions that come with OpenSSL) or
16357 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
16358 provided by the library user) must be used. When the standard
16359 debugging functions are used, CRYPTO_dbg_set_options can be used to
16360 request additional information:
16361 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
16362 the CRYPTO_MDEBUG_xxx macro when compiling the library.
16364 Also, things like CRYPTO_set_mem_functions will always give the
16365 expected result (the new set of functions is used for allocation
16366 and deallocation) at all times, regardless of platform and compiler
16369 To finish it up, some functions that were never use in any other
16370 way than through macros have a new API and new semantic:
16372 CRYPTO_dbg_malloc()
16373 CRYPTO_dbg_realloc()
16376 All macros of value have retained their old syntax.
16378 *Richard Levitte and Bodo Moeller*
16380 * Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
16381 ordering of SMIMECapabilities wasn't in "strength order" and there
16382 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
16387 * Some ASN1 types with illegal zero length encoding (INTEGER,
16388 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
16390 *Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson*
16392 * Merge in my S/MIME library for OpenSSL. This provides a simple
16393 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
16394 functionality to handle multipart/signed properly) and a utility
16395 called 'smime' to call all this stuff. This is based on code I
16396 originally wrote for Celo who have kindly allowed it to be
16397 included in OpenSSL.
16401 * Add variants des_set_key_checked and des_set_key_unchecked of
16402 des_set_key (aka des_key_sched). Global variable des_check_key
16403 decides which of these is called by des_set_key; this way
16404 des_check_key behaves as it always did, but applications and
16405 the library itself, which was buggy for des_check_key == 1,
16406 have a cleaner way to pick the version they need.
16410 * New function PKCS12_newpass() which changes the password of a
16415 * Modify X509_TRUST and X509_PURPOSE so it also uses a static and
16416 dynamic mix. In both cases the ids can be used as an index into the
16417 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
16418 functions so they accept a list of the field values and the
16419 application doesn't need to directly manipulate the X509_TRUST
16424 * Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
16429 * Modify the way the V3 extension code looks up extensions. This now
16430 works in a similar way to the object code: we have some "standard"
16431 extensions in a static table which is searched with OBJ_bsearch()
16432 and the application can add dynamic ones if needed. The file
16433 crypto/x509v3/ext_dat.h now has the info: this file needs to be
16434 updated whenever a new extension is added to the core code and kept
16435 in ext_nid order. There is a simple program 'tabtest.c' which checks
16436 this. New extensions are not added too often so this file can readily
16437 be maintained manually.
16439 There are two big advantages in doing things this way. The extensions
16440 can be looked up immediately and no longer need to be "added" using
16441 X509V3_add_standard_extensions(): this function now does nothing.
16442 Side note: I get *lots* of email saying the extension code doesn't
16443 work because people forget to call this function.
16444 Also no dynamic allocation is done unless new extensions are added:
16445 so if we don't add custom extensions there is no need to call
16446 X509V3_EXT_cleanup().
16450 * Modify enc utility's salting as follows: make salting the default. Add a
16451 magic header, so unsalted files fail gracefully instead of just decrypting
16452 to garbage. This is because not salting is a big security hole, so people
16453 should be discouraged from doing it.
16457 * Fixes and enhancements to the 'x509' utility. It allowed a message
16458 digest to be passed on the command line but it only used this
16459 parameter when signing a certificate. Modified so all relevant
16460 operations are affected by the digest parameter including the
16461 -fingerprint and -x509toreq options. Also -x509toreq choked if a
16462 DSA key was used because it didn't fix the digest.
16466 * Initial certificate chain verify code. Currently tests the untrusted
16467 certificates for consistency with the verify purpose (which is set
16468 when the X509_STORE_CTX structure is set up) and checks the pathlength.
16470 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
16471 this is because it will reject chains with invalid extensions whereas
16472 every previous version of OpenSSL and SSLeay made no checks at all.
16474 Trust code: checks the root CA for the relevant trust settings. Trust
16475 settings have an initial value consistent with the verify purpose: e.g.
16476 if the verify purpose is for SSL client use it expects the CA to be
16477 trusted for SSL client use. However the default value can be changed to
16478 permit custom trust settings: one example of this would be to only trust
16479 certificates from a specific "secure" set of CAs.
16481 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
16482 which should be used for version portability: especially since the
16483 verify structure is likely to change more often now.
16485 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
16486 to set them. If not set then assume SSL clients will verify SSL servers
16489 Two new options to the verify program: -untrusted allows a set of
16490 untrusted certificates to be passed in and -purpose which sets the
16491 intended purpose of the certificate. If a purpose is set then the
16492 new chain verify code is used to check extension consistency.
16496 * Support for the authority information access extension.
16500 * Modify RSA and DSA PEM read routines to transparently handle
16501 PKCS#8 format private keys. New *_PUBKEY_* functions that handle
16502 public keys in a format compatible with certificate
16503 SubjectPublicKeyInfo structures. Unfortunately there were already
16504 functions called *_PublicKey_* which used various odd formats so
16505 these are retained for compatibility: however the DSA variants were
16506 never in a public release so they have been deleted. Changed dsa/rsa
16507 utilities to handle the new format: note no releases ever handled public
16508 keys so we should be OK.
16510 The primary motivation for this change is to avoid the same fiasco
16511 that dogs private keys: there are several incompatible private key
16512 formats some of which are standard and some OpenSSL specific and
16513 require various evil hacks to allow partial transparent handling and
16514 even then it doesn't work with DER formats. Given the option anything
16515 other than PKCS#8 should be dumped: but the other formats have to
16516 stay in the name of compatibility.
16518 With public keys and the benefit of hindsight one standard format
16519 is used which works with EVP_PKEY, RSA or DSA structures: though
16520 it clearly returns an error if you try to read the wrong kind of key.
16522 Added a -pubkey option to the 'x509' utility to output the public key.
16523 Also rename the `EVP_PKEY_get_*()` to `EVP_PKEY_rget_*()`
16524 (renamed to `EVP_PKEY_get1_*()` in the OpenSSL 0.9.5 release) and add
16525 `EVP_PKEY_rset_*()` functions (renamed to `EVP_PKEY_set1_*()`)
16526 that do the same as the `EVP_PKEY_assign_*()` except they up the
16527 reference count of the added key (they don't "swallow" the
16532 * Fixes to crypto/x509/by_file.c the code to read in certificates and
16533 CRLs would fail if the file contained no certificates or no CRLs:
16534 added a new function to read in both types and return the number
16535 read: this means that if none are read it will be an error. The
16536 DER versions of the certificate and CRL reader would always fail
16537 because it isn't possible to mix certificates and CRLs in DER format
16538 without choking one or the other routine. Changed this to just read
16539 a certificate: this is the best we can do. Also modified the code
16540 in `apps/verify.c` to take notice of return codes: it was previously
16541 attempting to read in certificates from NULL pointers and ignoring
16542 any errors: this is one reason why the cert and CRL reader seemed
16543 to work. It doesn't check return codes from the default certificate
16544 routines: these may well fail if the certificates aren't installed.
16548 * Code to support otherName option in GeneralName.
16552 * First update to verify code. Change the verify utility
16553 so it warns if it is passed a self signed certificate:
16554 for consistency with the normal behaviour. X509_verify
16555 has been modified to it will now verify a self signed
16556 certificate if *exactly* the same certificate appears
16557 in the store: it was previously impossible to trust a
16558 single self signed certificate. This means that:
16559 openssl verify ss.pem
16560 now gives a warning about a self signed certificate but
16561 openssl verify -CAfile ss.pem ss.pem
16566 * For servers, store verify_result in SSL_SESSION data structure
16567 (and add it to external session representation).
16568 This is needed when client certificate verifications fails,
16569 but an application-provided verification callback (set by
16570 SSL_CTX_set_cert_verify_callback) allows accepting the session
16571 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
16572 but returns 1): When the session is reused, we have to set
16573 ssl->verify_result to the appropriate error code to avoid
16576 *Bodo Moeller, problem pointed out by Lutz Jaenicke*
16578 * Fix a bug in the new PKCS#7 code: it didn't consider the
16579 case in PKCS7_dataInit() where the signed PKCS7 structure
16580 didn't contain any existing data because it was being created.
16582 *Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson*
16584 * Add a salt to the key derivation routines in enc.c. This
16585 forms the first 8 bytes of the encrypted file. Also add a
16586 -S option to allow a salt to be input on the command line.
16590 * New function X509_cmp(). Oddly enough there wasn't a function
16591 to compare two certificates. We do this by working out the SHA1
16592 hash and comparing that. X509_cmp() will be needed by the trust
16597 * SSL_get1_session() is like SSL_get_session(), but increments
16598 the reference count in the SSL_SESSION returned.
16600 *Geoff Thorpe <geoff@eu.c2.net>*
16602 * Fix for 'req': it was adding a null to request attributes.
16603 Also change the X509_LOOKUP and X509_INFO code to handle
16604 certificate auxiliary information.
16608 * Add support for 40 and 64 bit RC2 and RC4 algorithms: document
16613 * Add the possibility to add extra information to the memory leak
16614 detecting output, to form tracebacks, showing from where each
16615 allocation was originated: CRYPTO_push_info("constant string") adds
16616 the string plus current file name and line number to a per-thread
16617 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
16618 is like calling CYRPTO_pop_info() until the stack is empty.
16619 Also updated memory leak detection code to be multi-thread-safe.
16623 * Add options -text and -noout to pkcs7 utility and delete the
16624 encryption options which never did anything. Update docs.
16628 * Add options to some of the utilities to allow the pass phrase
16629 to be included on either the command line (not recommended on
16630 OSes like Unix) or read from the environment. Update the
16631 manpages and fix a few bugs.
16635 * Add a few manpages for some of the openssl commands.
16639 * Fix the -revoke option in ca. It was freeing up memory twice,
16640 leaking and not finding already revoked certificates.
16644 * Extensive changes to support certificate auxiliary information.
16645 This involves the use of X509_CERT_AUX structure and X509_AUX
16646 functions. An X509_AUX function such as PEM_read_X509_AUX()
16647 can still read in a certificate file in the usual way but it
16648 will also read in any additional "auxiliary information". By
16649 doing things this way a fair degree of compatibility can be
16650 retained: existing certificates can have this information added
16651 using the new 'x509' options.
16653 Current auxiliary information includes an "alias" and some trust
16654 settings. The trust settings will ultimately be used in enhanced
16655 certificate chain verification routines: currently a certificate
16656 can only be trusted if it is self signed and then it is trusted
16661 * Fix assembler for Alpha (tested only on DEC OSF not Linux or `*BSD`).
16662 The problem was that one of the replacement routines had not been working
16663 since SSLeay releases. For now the offending routine has been replaced
16664 with non-optimised assembler. Even so, this now gives around 95%
16665 performance improvement for 1024 bit RSA signs.
16669 * Hack to fix PKCS#7 decryption when used with some unorthodox RC2
16670 handling. Most clients have the effective key size in bits equal to
16671 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
16672 A few however don't do this and instead use the size of the decrypted key
16673 to determine the RC2 key length and the AlgorithmIdentifier to determine
16674 the effective key length. In this case the effective key length can still
16675 be 40 bits but the key length can be 168 bits for example. This is fixed
16676 by manually forcing an RC2 key into the EVP_PKEY structure because the
16677 EVP code can't currently handle unusual RC2 key sizes: it always assumes
16678 the key length and effective key length are equal.
16682 * Add a bunch of functions that should simplify the creation of
16683 X509_NAME structures. Now you should be able to do:
16684 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
16685 and have it automatically work out the correct field type and fill in
16686 the structures. The more adventurous can try:
16687 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
16688 and it will (hopefully) work out the correct multibyte encoding.
16692 * Change the 'req' utility to use the new field handling and multibyte
16693 copy routines. Before the DN field creation was handled in an ad hoc
16694 way in req, ca, and x509 which was rather broken and didn't support
16695 BMPStrings or UTF8Strings. Since some software doesn't implement
16696 BMPStrings or UTF8Strings yet, they can be enabled using the config file
16697 using the dirstring_type option. See the new comment in the default
16698 openssl.cnf for more info.
16702 * Make crypto/rand/md_rand.c more robust:
16703 - Assure unique random numbers after fork().
16704 - Make sure that concurrent threads access the global counter and
16705 md serializably so that we never lose entropy in them
16706 or use exactly the same state in multiple threads.
16707 Access to the large state is not always serializable because
16708 the additional locking could be a performance killer, and
16709 md should be large enough anyway.
16713 * New file `apps/app_rand.c` with commonly needed functionality
16714 for handling the random seed file.
16716 Use the random seed file in some applications that previously did not:
16718 dsaparam -genkey (which also ignored its '-rand' option),
16721 x509 (when signing).
16722 Except on systems with /dev/urandom, it is crucial to have a random
16723 seed file at least for key creation, DSA signing, and for DH exchanges;
16724 for RSA signatures we could do without one.
16726 gendh and gendsa (unlike genrsa) used to read only the first byte
16727 of each file listed in the '-rand' option. The function as previously
16728 found in genrsa is now in app_rand.c and is used by all programs
16729 that support '-rand'.
16733 * In RAND_write_file, use mode 0600 for creating files;
16734 don't just chmod when it may be too late.
16738 * Report an error from X509_STORE_load_locations
16739 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
16743 * New function ASN1_mbstring_copy() this copies a string in either
16744 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
16745 into an ASN1_STRING type. A mask of permissible types is passed
16746 and it chooses the "minimal" type to use or an error if not type
16751 * Add function equivalents to the various macros in asn1.h. The old
16752 macros are retained with an `M_` prefix. Code inside the library can
16753 use the `M_` macros. External code (including the openssl utility)
16754 should *NOT* in order to be "shared library friendly".
16758 * Add various functions that can check a certificate's extensions
16759 to see if it usable for various purposes such as SSL client,
16760 server or S/MIME and CAs of these types. This is currently
16761 VERY EXPERIMENTAL but will ultimately be used for certificate chain
16762 verification. Also added a -purpose flag to x509 utility to
16763 print out all the purposes.
16767 * Add a CRYPTO_EX_DATA to X509 certificate structure and associated
16772 * New `X509V3_{X509,CRL,REVOKED}_get_d2i()` functions. These will search
16773 for, obtain and decode and extension and obtain its critical flag.
16774 This allows all the necessary extension code to be handled in a
16775 single function call.
16779 * RC4 tune-up featuring 30-40% performance improvement on most RISC
16780 platforms. See crypto/rc4/rc4_enc.c for further details.
16784 * New -noout option to asn1parse. This causes no output to be produced
16785 its main use is when combined with -strparse and -out to extract data
16786 from a file (which may not be in ASN.1 format).
16790 * Fix for pkcs12 program. It was hashing an invalid certificate pointer
16791 when producing the local key id.
16793 *Richard Levitte <levitte@stacken.kth.se>*
16795 * New option -dhparam in s_server. This allows a DH parameter file to be
16796 stated explicitly. If it is not stated then it tries the first server
16797 certificate file. The previous behaviour hard coded the filename
16802 * Add -pubin and -pubout options to the rsa and dsa commands. These allow
16803 a public key to be input or output. For example:
16804 openssl rsa -in key.pem -pubout -out pubkey.pem
16805 Also added necessary DSA public key functions to handle this.
16809 * Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
16810 in the message. This was handled by allowing
16811 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
16813 *Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>*
16815 * Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
16816 to the end of the strings whereas this didn't. This would cause problems
16817 if strings read with d2i_ASN1_bytes() were later modified.
16819 *Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>*
16821 * Fix for base64 decode bug. When a base64 bio reads only one line of
16822 data and it contains EOF it will end up returning an error. This is
16823 caused by input 46 bytes long. The cause is due to the way base64
16824 BIOs find the start of base64 encoded data. They do this by trying a
16825 trial decode on each line until they find one that works. When they
16826 do a flag is set and it starts again knowing it can pass all the
16827 data directly through the decoder. Unfortunately it doesn't reset
16828 the context it uses. This means that if EOF is reached an attempt
16829 is made to pass two EOFs through the context and this causes the
16830 resulting error. This can also cause other problems as well. As is
16831 usual with these problems it takes *ages* to find and the fix is
16832 trivial: move one line.
16834 *Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer)*
16836 * Ugly workaround to get s_client and s_server working under Windows. The
16837 old code wouldn't work because it needed to select() on sockets and the
16838 tty (for keypresses and to see if data could be written). Win32 only
16839 supports select() on sockets so we select() with a 1s timeout on the
16840 sockets and then see if any characters are waiting to be read, if none
16841 are present then we retry, we also assume we can always write data to
16842 the tty. This isn't nice because the code then blocks until we've
16843 received a complete line of data and it is effectively polling the
16844 keyboard at 1s intervals: however it's quite a bit better than not
16845 working at all :-) A dedicated Windows application might handle this
16846 with an event loop for example.
16850 * Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
16851 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
16852 will be called when RSA_sign() and RSA_verify() are used. This is useful
16853 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
16854 For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
16855 should *not* be used: RSA_sign() and RSA_verify() must be used instead.
16856 This necessitated the support of an extra signature type NID_md5_sha1
16857 for SSL signatures and modifications to the SSL library to use it instead
16858 of calling RSA_public_decrypt() and RSA_private_encrypt().
16862 * Add new -verify -CAfile and -CApath options to the crl program, these
16863 will lookup a CRL issuers certificate and verify the signature in a
16864 similar way to the verify program. Tidy up the crl program so it
16865 no longer accesses structures directly. Make the ASN1 CRL parsing a bit
16866 less strict. It will now permit CRL extensions even if it is not
16867 a V2 CRL: this will allow it to tolerate some broken CRLs.
16871 * Initialize all non-automatic variables each time one of the openssl
16872 sub-programs is started (this is necessary as they may be started
16873 multiple times from the "OpenSSL>" prompt).
16875 *Lennart Bang, Bodo Moeller*
16877 * Preliminary compilation option RSA_NULL which disables RSA crypto without
16878 removing all other RSA functionality (this is what NO_RSA does). This
16879 is so (for example) those in the US can disable those operations covered
16880 by the RSA patent while allowing storage and parsing of RSA keys and RSA
16885 * Non-copying interface to BIO pairs.
16886 (still largely untested)
16890 * New function ASN1_tag2str() to convert an ASN1 tag to a descriptive
16891 ASCII string. This was handled independently in various places before.
16895 * New functions UTF8_getc() and UTF8_putc() that parse and generate
16896 UTF8 strings a character at a time.
16900 * Use client_version from client hello to select the protocol
16901 (s23_srvr.c) and for RSA client key exchange verification
16902 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
16906 * Add various utility functions to handle SPKACs, these were previously
16907 handled by poking round in the structure internals. Added new function
16908 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
16909 print, verify and generate SPKACs. Based on an original idea from
16910 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
16914 * RIPEMD160 is operational on all platforms and is back in 'make test'.
16918 * Allow the config file extension section to be overwritten on the
16919 command line. Based on an original idea from Massimiliano Pala
16920 <madwolf@comune.modena.it>. The new option is called -extensions
16921 and can be applied to ca, req and x509. Also -reqexts to override
16922 the request extensions in req and -crlexts to override the crl extensions
16927 * Add new feature to the SPKAC handling in ca. Now you can include
16928 the same field multiple times by preceding it by "XXXX." for example:
16931 this is the same syntax as used in the req config file.
16935 * Allow certificate extensions to be added to certificate requests. These
16936 are specified in a 'req_extensions' option of the req section of the
16937 config file. They can be printed out with the -text option to req but
16938 are otherwise ignored at present.
16942 * Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
16943 data read consists of only the final block it would not decrypted because
16944 EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
16945 A misplaced 'break' also meant the decrypted final block might not be
16946 copied until the next read.
16950 * Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
16951 a few extra parameters to the DH structure: these will be useful if
16952 for example we want the value of 'q' or implement X9.42 DH.
16956 * Initial support for DSA_METHOD. This is based on the RSA_METHOD and
16957 provides hooks that allow the default DSA functions or functions on a
16958 "per key" basis to be replaced. This allows hardware acceleration and
16959 hardware key storage to be handled without major modification to the
16960 library. Also added low-level modexp hooks and CRYPTO_EX structure and
16961 associated functions.
16965 * Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
16966 as "read only": it can't be written to and the buffer it points to will
16967 not be freed. Reading from a read only BIO is much more efficient than
16968 a normal memory BIO. This was added because there are several times when
16969 an area of memory needs to be read from a BIO. The previous method was
16970 to create a memory BIO and write the data to it, this results in two
16971 copies of the data and an O(n^2) reading algorithm. There is a new
16972 function BIO_new_mem_buf() which creates a read only memory BIO from
16973 an area of memory. Also modified the PKCS#7 routines to use read only
16978 * Bugfix: ssl23_get_client_hello did not work properly when called in
16979 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
16980 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
16981 but a retry condition occurred while trying to read the rest.
16985 * The PKCS7_ENC_CONTENT_new() function was setting the content type as
16986 NID_pkcs7_encrypted by default: this was wrong since this should almost
16987 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
16988 the encrypted data type: this is a more sensible place to put it and it
16989 allows the PKCS#12 code to be tidied up that duplicated this
16994 * Changed obj_dat.pl script so it takes its input and output files on
16995 the command line. This should avoid shell escape redirection problems
17000 * Initial support for certificate extension requests, these are included
17001 in things like Xenroll certificate requests. Included functions to allow
17002 extensions to be obtained and added.
17006 * -crlf option to s_client and s_server for sending newlines as
17007 CRLF (as required by many protocols).
17011 ### Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
17013 * Install libRSAglue.a when OpenSSL is built with RSAref.
17015 *Ralf S. Engelschall*
17017 * A few more `#ifndef NO_FP_API / #endif` pairs for consistency.
17019 *Andrija Antonijevic <TheAntony2@bigfoot.com>*
17021 * Fix -startdate and -enddate (which was missing) arguments to 'ca'
17026 * New function DSA_dup_DH, which duplicates DSA parameters/keys as
17027 DH parameters/keys (q is lost during that conversion, but the resulting
17028 DH parameters contain its length).
17030 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
17031 much faster than DH_generate_parameters (which creates parameters
17032 where `p = 2*q + 1`), and also the smaller q makes DH computations
17033 much more efficient (160-bit exponentiation instead of 1024-bit
17034 exponentiation); so this provides a convenient way to support DHE
17035 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
17036 utter importance to use
17037 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
17039 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
17040 when such DH parameters are used, because otherwise small subgroup
17041 attacks may become possible!
17045 * Avoid memory leak in i2d_DHparams.
17049 * Allow the -k option to be used more than once in the enc program:
17050 this allows the same encrypted message to be read by multiple recipients.
17054 * New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
17055 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
17056 it will always use the numerical form of the OID, even if it has a short
17061 * Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
17062 method only got called if p,q,dmp1,dmq1,iqmp components were present,
17063 otherwise bn_mod_exp was called. In the case of hardware keys for example
17064 no private key components need be present and it might store extra data
17065 in the RSA structure, which cannot be accessed from bn_mod_exp.
17066 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
17067 private key operations.
17071 * Added support for SPARC Linux.
17075 * pem_password_cb function type incompatibly changed from
17076 typedef int pem_password_cb(char *buf, int size, int rwflag);
17078 ....(char *buf, int size, int rwflag, void *userdata);
17079 so that applications can pass data to their callbacks:
17080 The `PEM[_ASN1]_{read,write}...` functions and macros now take an
17081 additional void * argument, which is just handed through whenever
17082 the password callback is called.
17084 *Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller*
17086 New function SSL_CTX_set_default_passwd_cb_userdata.
17088 Compatibility note: As many C implementations push function arguments
17089 onto the stack in reverse order, the new library version is likely to
17090 interoperate with programs that have been compiled with the old
17091 pem_password_cb definition (PEM_whatever takes some data that
17092 happens to be on the stack as its last argument, and the callback
17093 just ignores this garbage); but there is no guarantee whatsoever that
17096 * The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
17097 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
17098 problems not only on Windows, but also on some Unix platforms.
17099 To avoid problematic command lines, these definitions are now in an
17100 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
17101 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
17105 * MIPS III/IV assembler module is reimplemented.
17109 * More DES library cleanups: remove references to srand/rand and
17110 delete an unused file.
17114 * Add support for the free Netwide assembler (NASM) under Win32,
17115 since not many people have MASM (ml) and it can be hard to obtain.
17116 This is currently experimental but it seems to work OK and pass all
17117 the tests. Check out INSTALL.W32 for info.
17121 * Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
17122 without temporary keys kept an extra copy of the server key,
17123 and connections with temporary keys did not free everything in case
17128 * New function RSA_check_key and new openssl rsa option -check
17129 for verifying the consistency of RSA keys.
17131 *Ulf Moeller, Bodo Moeller*
17133 * Various changes to make Win32 compile work:
17134 1. Casts to avoid "loss of data" warnings in p5_crpt2.c
17135 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
17136 comparison" warnings.
17137 3. Add `sk_<TYPE>_sort` to DEF file generator and do make update.
17141 * Add a debugging option to PKCS#5 v2 key generation function: when
17142 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
17143 derived keys are printed to stderr.
17147 * Copy the flags in ASN1_STRING_dup().
17149 *Roman E. Pavlov <pre@mo.msk.ru>*
17151 * The x509 application mishandled signing requests containing DSA
17152 keys when the signing key was also DSA and the parameters didn't match.
17154 It was supposed to omit the parameters when they matched the signing key:
17155 the verifying software was then supposed to automatically use the CA's
17156 parameters if they were absent from the end user certificate.
17158 Omitting parameters is no longer recommended. The test was also
17159 the wrong way round! This was probably due to unusual behaviour in
17160 EVP_cmp_parameters() which returns 1 if the parameters match.
17161 This meant that parameters were omitted when they *didn't* match and
17162 the certificate was useless. Certificates signed with 'ca' didn't have
17165 *Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>*
17167 * Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
17168 The interface is as follows:
17169 Applications can use
17170 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
17171 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
17172 "off" is now the default.
17173 The library internally uses
17174 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
17175 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
17176 to disable memory-checking temporarily.
17178 Some inconsistent states that previously were possible (and were
17179 even the default) are now avoided.
17181 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
17182 with each memory chunk allocated; this is occasionally more helpful
17183 than just having a counter.
17185 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
17187 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
17192 * Introduce "mode" for SSL structures (with defaults in SSL_CTX),
17193 which largely parallels "options", but is for changing API behaviour,
17194 whereas "options" are about protocol behaviour.
17195 Initial "mode" flags are:
17197 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when
17198 a single record has been written.
17199 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write
17200 retries use the same buffer location.
17201 (But all of the contents must be
17206 * Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options
17209 * Fix problems with no-hmac etc.
17211 *Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>*
17213 * New functions RSA_get_default_method(), RSA_set_method() and
17214 RSA_get_method(). These allows replacement of RSA_METHODs without having
17215 to mess around with the internals of an RSA structure.
17219 * Fix memory leaks in DSA_do_sign and DSA_is_prime.
17220 Also really enable memory leak checks in openssl.c and in some
17223 *Chad C. Mulligan, Bodo Moeller*
17225 * Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
17226 up the length of negative integers. This has now been simplified to just
17227 store the length when it is first determined and use it later, rather
17228 than trying to keep track of where data is copied and updating it to
17230 *Steve Henson, reported by Brien Wheeler <bwheeler@authentica-security.com>*
17232 * Add a new function PKCS7_signatureVerify. This allows the verification
17233 of a PKCS#7 signature but with the signing certificate passed to the
17234 function itself. This contrasts with PKCS7_dataVerify which assumes the
17235 certificate is present in the PKCS#7 structure. This isn't always the
17236 case: certificates can be omitted from a PKCS#7 structure and be
17237 distributed by "out of band" means (such as a certificate database).
17241 * Complete the `PEM_*` macros with DECLARE_PEM versions to replace the
17242 function prototypes in pem.h, also change util/mkdef.pl to add the
17243 necessary function names.
17247 * mk1mf.pl (used by Windows builds) did not properly read the
17248 options set by Configure in the top level Makefile, and Configure
17249 was not even able to write more than one option correctly.
17250 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
17254 * New functions CONF_load_bio() and CONF_load_fp() to allow a config
17255 file to be loaded from a BIO or FILE pointer. The BIO version will
17256 for example allow memory BIOs to contain config info.
17260 * New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
17261 Whoever hopes to achieve shared-library compatibility across versions
17262 must use this, not the compile-time macro.
17263 (Exercise 0.9.4: Which is the minimum library version required by
17265 Note: All this applies only to multi-threaded programs, others don't
17270 * Add missing case to s3_clnt.c state machine -- one of the new SSL tests
17271 through a BIO pair triggered the default case, i.e.
17272 SSLerr(...,SSL_R_UNKNOWN_STATE).
17276 * New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
17277 can use the SSL library even if none of the specific BIOs is
17282 * Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
17283 for the encoded length.
17285 *Jeon KyoungHo <khjeon@sds.samsung.co.kr>*
17287 * Add initial documentation of the X509V3 functions.
17291 * Add a new pair of functions PEM_write_PKCS8PrivateKey() and
17292 PEM_write_bio_PKCS8PrivateKey() that are equivalent to
17293 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
17294 secure PKCS#8 private key format with a high iteration count.
17298 * Fix determination of Perl interpreter: A perl or perl5
17299 *directory* in $PATH was also accepted as the interpreter.
17301 *Ralf S. Engelschall*
17303 * Fix demos/sign/sign.c: well there wasn't anything strictly speaking
17304 wrong with it but it was very old and did things like calling
17305 PEM_ASN1_read() directly and used MD5 for the hash not to mention some
17306 unusual formatting.
17310 * Fix demos/selfsign.c: it used obsolete and deleted functions, changed
17311 to use the new extension code.
17315 * Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
17316 with macros. This should make it easier to change their form, add extra
17317 arguments etc. Fix a few PEM prototypes which didn't have cipher as a
17322 * Add to configuration table a new entry that can specify an alternative
17323 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
17324 according to Mark Crispin <MRC@Panda.COM>.
17328 * DES CBC did not update the IV. Weird.
17332 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
17333 Changing the behaviour of the former might break existing programs --
17334 where IV updating is needed, des_ncbc_encrypt can be used.
17337 * When bntest is run from "make test" it drives bc to check its
17338 calculations, as well as internally checking them. If an internal check
17339 fails, it needs to cause bc to give a non-zero result or make test carries
17340 on without noticing the failure. Fixed.
17344 * DES library cleanups.
17348 * Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
17349 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
17350 ciphers. NOTE: although the key derivation function has been verified
17351 against some published test vectors it has not been extensively tested
17352 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
17357 * Instead of "mkdir -p", which is not fully portable, use new
17358 Perl script "util/mkdir-p.pl".
17362 * Rewrite the way password based encryption (PBE) is handled. It used to
17363 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
17364 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
17365 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
17366 the 'parameter' field of the AlgorithmIdentifier is passed to the
17367 underlying key generation function so it must do its own ASN1 parsing.
17368 This has also changed the EVP_PBE_CipherInit() function which now has a
17369 'parameter' argument instead of literal salt and iteration count values
17370 and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
17374 * Support for PKCS#5 v1.5 compatible password based encryption algorithms
17375 and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
17376 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
17377 KEY" because this clashed with PKCS#8 unencrypted string. Since this
17378 value was just used as a "magic string" and not used directly its
17379 value doesn't matter.
17383 * Introduce some semblance of const correctness to BN. Shame C doesn't
17388 * "linux-sparc64" configuration (ultrapenguin).
17390 *Ray Miller <ray.miller@oucs.ox.ac.uk>*
17391 "linux-sparc" configuration.
17393 *Christian Forster <fo@hawo.stw.uni-erlangen.de>*
17395 * config now generates no-xxx options for missing ciphers.
17399 * Support the EBCDIC character set (work in progress).
17400 File ebcdic.c not yet included because it has a different license.
17402 *Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>*
17404 * Support BS2000/OSD-POSIX.
17406 *Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>*
17408 * Make callbacks for key generation use `void *` instead of `char *`.
17412 * Make S/MIME samples compile (not yet tested).
17416 * Additional typesafe stacks.
17420 * New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
17424 ### Changes between 0.9.3 and 0.9.3a [29 May 1999]
17426 * New configuration variant "sco5-gcc".
17428 * Updated some demos.
17430 *Sean O Riordain, Wade Scholine*
17432 * Add missing BIO_free at exit of pkcs12 application.
17436 * Fix memory leak in conf.c.
17440 * Updates for Win32 to assembler version of MD5.
17444 * Set #! path to perl in `apps/der_chop` to where we found it
17445 instead of using a fixed path.
17449 * SHA library changes for irix64-mips4-cc.
17453 * Improvements for VMS support.
17457 ### Changes between 0.9.2b and 0.9.3 [24 May 1999]
17459 * Bignum library bug fix. IRIX 6 passes "make test" now!
17460 This also avoids the problems with SC4.2 and unpatched SC5.
17462 *Andy Polyakov <appro@fy.chalmers.se>*
17464 * New functions sk_num, sk_value and sk_set to replace the previous macros.
17465 These are required because of the typesafe stack would otherwise break
17466 existing code. If old code used a structure member which used to be STACK
17467 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
17468 sk_num or sk_value it would produce an error because the num, data members
17469 are not present in STACK_OF. Now it just produces a warning. sk_set
17470 replaces the old method of assigning a value to sk_value
17471 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
17472 that does this will no longer work (and should use sk_set instead) but
17473 this could be regarded as a "questionable" behaviour anyway.
17477 * Fix most of the other PKCS#7 bugs. The "experimental" code can now
17478 correctly handle encrypted S/MIME data.
17482 * Change type of various DES function arguments from des_cblock
17483 (which means, in function argument declarations, pointer to char)
17484 to des_cblock * (meaning pointer to array with 8 char elements),
17485 which allows the compiler to do more typechecking; it was like
17486 that back in SSLeay, but with lots of ugly casts.
17488 Introduce new type const_des_cblock.
17492 * Reorganise the PKCS#7 library and get rid of some of the more obvious
17493 problems: find RecipientInfo structure that matches recipient certificate
17494 and initialise the ASN1 structures properly based on passed cipher.
17498 * Belatedly make the BN tests actually check the results.
17502 * Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
17503 to and from BNs: it was completely broken. New compilation option
17504 NEG_PUBKEY_BUG to allow for some broken certificates that encode public
17505 key elements as negative integers.
17509 * Reorganize and speed up MD5.
17511 *Andy Polyakov <appro@fy.chalmers.se>*
17515 *Richard Levitte <richard@levitte.org>*
17517 * New option -out to asn1parse to allow the parsed structure to be
17518 output to a file. This is most useful when combined with the -strparse
17519 option to examine the output of things like OCTET STRINGS.
17523 * Make SSL library a little more fool-proof by not requiring any longer
17524 that `SSL_set_{accept,connect}_state` be called before
17525 `SSL_{accept,connect}` may be used (`SSL_set_..._state` is omitted
17526 in many applications because usually everything *appeared* to work as
17527 intended anyway -- now it really works as intended).
17531 * Move openssl.cnf out of lib/.
17535 * Fix various things to let OpenSSL even pass "egcc -pipe -O2 -Wall
17536 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
17537 -Wmissing-declarations -Wnested-externs -Winline" with EGCS 1.1.2+
17539 *Ralf S. Engelschall*
17541 * Various fixes to the EVP and PKCS#7 code. It may now be able to
17542 handle PKCS#7 enveloped data properly.
17544 *Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve*
17546 * Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
17547 copying pointers. The cert_st handling is changed by this in
17548 various ways (and thus what used to be known as ctx->default_cert
17549 is now called ctx->cert, since we don't resort to `s->ctx->[default_]cert`
17550 any longer when s->cert does not give us what we need).
17551 ssl_cert_instantiate becomes obsolete by this change.
17552 As soon as we've got the new code right (possibly it already is?),
17553 we have solved a couple of bugs of the earlier code where s->cert
17554 was used as if it could not have been shared with other SSL structures.
17556 Note that using the SSL API in certain dirty ways now will result
17557 in different behaviour than observed with earlier library versions:
17558 Changing settings for an `SSL_CTX *ctx` after having done s = SSL_new(ctx)
17559 does not influence s as it used to.
17561 In order to clean up things more thoroughly, inside SSL_SESSION
17562 we don't use CERT any longer, but a new structure SESS_CERT
17563 that holds per-session data (if available); currently, this is
17564 the peer's certificate chain and, for clients, the server's certificate
17565 and temporary key. CERT holds only those values that can have
17566 meaningful defaults in an SSL_CTX.
17570 * New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
17571 from the internal representation. Various PKCS#7 fixes: remove some
17572 evil casts and set the enc_dig_alg field properly based on the signing
17577 * Allow PKCS#12 password to be set from the command line or the
17578 environment. Let 'ca' get its config file name from the environment
17579 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
17584 * Allow certificate policies extension to use an IA5STRING for the
17585 organization field. This is contrary to the PKIX definition but
17586 VeriSign uses it and IE5 only recognises this form. Document 'x509'
17591 * Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
17592 without disallowing inline assembler and the like for non-pedantic builds.
17596 * Support Borland C++ builder.
17598 *Janez Jere <jj@void.si>, modified by Ulf Möller*
17604 * SHA-1 cleanups and performance enhancements.
17606 *Andy Polyakov <appro@fy.chalmers.se>*
17608 * Sparc v8plus assembler for the bignum library.
17610 *Andy Polyakov <appro@fy.chalmers.se>*
17612 * Accept any -xxx and +xxx compiler options in Configure.
17616 * Update HPUX configuration.
17620 * Add missing `sk_<type>_unshift()` function to safestack.h
17622 *Ralf S. Engelschall*
17624 * New function SSL_CTX_use_certificate_chain_file that sets the
17625 "extra_cert"s in addition to the certificate. (This makes sense
17626 only for "PEM" format files, as chains as a whole are not
17631 * Support verify_depth from the SSL API.
17632 x509_vfy.c had what can be considered an off-by-one-error:
17633 Its depth (which was not part of the external interface)
17634 was actually counting the number of certificates in a chain;
17635 now it really counts the depth.
17639 * Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
17640 instead of X509err, which often resulted in confusing error
17641 messages since the error codes are not globally unique
17642 (e.g. an alleged error in ssl3_accept when a certificate
17643 didn't match the private key).
17645 * New function SSL_CTX_set_session_id_context that allows to set a default
17646 value (so that you don't need SSL_set_session_id_context for each
17647 connection using the SSL_CTX).
17651 * OAEP decoding bug fix.
17655 * Support INSTALL_PREFIX for package builders, as proposed by
17660 * New Configure options "threads" and "no-threads". For systems
17661 where the proper compiler options are known (currently Solaris
17662 and Linux), "threads" is the default.
17666 * New script util/mklink.pl as a faster substitute for util/mklink.sh.
17670 * Install various scripts to $(OPENSSLDIR)/misc, not to
17671 $(INSTALLTOP)/bin -- they shouldn't clutter directories
17672 such as /usr/local/bin.
17676 * "make linux-shared" to build shared libraries.
17678 *Niels Poppe <niels@netbox.org>*
17680 * New Configure option `no-<cipher>` (rsa, idea, rc5, ...).
17684 * Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
17685 extension adding in x509 utility.
17689 * Remove NOPROTO sections and error code comments.
17693 * Partial rewrite of the DEF file generator to now parse the ANSI
17698 * New Configure options --prefix=DIR and --openssldir=DIR.
17702 * Complete rewrite of the error code script(s). It is all now handled
17703 by one script at the top level which handles error code gathering,
17704 header rewriting and C source file generation. It should be much better
17705 than the old method: it now uses a modified version of Ulf's parser to
17706 read the ANSI prototypes in all header files (thus the old K&R definitions
17707 aren't needed for error creation any more) and do a better job of
17708 translating function codes into names. The old 'ASN1 error code embedded
17709 in a comment' is no longer necessary and it doesn't use .err files which
17710 have now been deleted. Also the error code call doesn't have to appear all
17711 on one line (which resulted in some large lines...).
17715 * Change #include filenames from `<foo.h>` to `<openssl/foo.h>`.
17719 * Change behaviour of ssl2_read when facing length-0 packets: Don't return
17720 0 (which usually indicates a closed connection), but continue reading.
17724 * Fix some race conditions.
17728 * Add support for CRL distribution points extension. Add Certificate
17729 Policies and CRL distribution points documentation.
17733 * Move the autogenerated header file parts to crypto/opensslconf.h.
17737 * Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
17738 8 of keying material. Merlin has also confirmed interop with this fix
17739 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
17741 *Merlin Hughes <merlin@baltimore.ie>*
17743 * Fix lots of warnings.
17745 *Richard Levitte <levitte@stacken.kth.se>*
17747 * In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
17748 the directory spec didn't end with a LIST_SEPARATOR_CHAR.
17750 *Richard Levitte <levitte@stacken.kth.se>*
17752 * Fix problems with sizeof(long) == 8.
17754 *Andy Polyakov <appro@fy.chalmers.se>*
17756 * Change functions to ANSI C.
17760 * Fix typos in error codes.
17762 *Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller*
17764 * Remove defunct assembler files from Configure.
17768 * SPARC v8 assembler BIGNUM implementation.
17770 *Andy Polyakov <appro@fy.chalmers.se>*
17772 * Support for Certificate Policies extension: both print and set.
17773 Various additions to support the r2i method this uses.
17777 * A lot of constification, and fix a bug in X509_NAME_oneline() that could
17778 return a const string when you are expecting an allocated buffer.
17782 * Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
17783 types DirectoryString and DisplayText.
17787 * Add code to allow r2i extensions to access the configuration database,
17788 add an LHASH database driver and add several ctx helper functions.
17792 * Fix an evil bug in bn_expand2() which caused various BN functions to
17793 fail when they extended the size of a BIGNUM.
17797 * Various utility functions to handle SXNet extension. Modify mkdef.pl to
17798 support typesafe stack.
17802 * Fix typo in SSL_[gs]et_options().
17804 *Nils Frostberg <nils@medcom.se>*
17806 * Delete various functions and files that belonged to the (now obsolete)
17807 old X509V3 handling code.
17811 * New Configure option "rsaref".
17815 * Don't auto-generate pem.h.
17819 * Introduce type-safe ASN.1 SETs.
17823 * Convert various additional casted stacks to type-safe STACK_OF() variants.
17825 *Ben Laurie, Ralf S. Engelschall, Steve Henson*
17827 * Introduce type-safe STACKs. This will almost certainly break lots of code
17828 that links with OpenSSL (well at least cause lots of warnings), but fear
17829 not: the conversion is trivial, and it eliminates loads of evil casts. A
17830 few STACKed things have been converted already. Feel free to convert more.
17831 In the fullness of time, I'll do away with the STACK type altogether.
17835 * Add `openssl ca -revoke <certfile>` facility which revokes a certificate
17836 specified in `<certfile>` by updating the entry in the index.txt file.
17837 This way one no longer has to edit the index.txt file manually for
17838 revoking a certificate. The -revoke option does the gory details now.
17840 *Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall*
17842 * Fix `openssl crl -noout -text` combination where `-noout` killed the
17843 `-text` option at all and this way the `-noout -text` combination was
17844 inconsistent in `openssl crl` with the friends in `openssl x509|rsa|dsa`.
17846 *Ralf S. Engelschall*
17848 * Make sure a corresponding plain text error message exists for the
17849 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
17850 verify callback function determined that a certificate was revoked.
17852 *Ralf S. Engelschall*
17854 * Bugfix: In test/testenc, don't test `openssl <cipher>` for
17855 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test
17856 all available ciphers including rc5, which was forgotten until now.
17857 In order to let the testing shell script know which algorithms
17858 are available, a new (up to now undocumented) command
17859 `openssl list-cipher-commands` is used.
17863 * Bugfix: s_client occasionally would sleep in select() when
17864 it should have checked SSL_pending() first.
17868 * New functions DSA_do_sign and DSA_do_verify to provide access to
17869 the raw DSA values prior to ASN.1 encoding.
17873 * Tweaks to Configure
17875 *Niels Poppe <niels@netbox.org>*
17877 * Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
17882 * New variables $(RANLIB) and $(PERL) in the Makefiles.
17886 * New config option to avoid instructions that are illegal on the 80386.
17887 The default code is faster, but requires at least a 486.
17891 * Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
17892 SSL2_SERVER_VERSION (not used at all) macros, which are now the
17893 same as SSL2_VERSION anyway.
17897 * New "-showcerts" option for s_client.
17901 * Still more PKCS#12 integration. Add pkcs12 application to openssl
17902 application. Various cleanups and fixes.
17906 * More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
17907 modify error routines to work internally. Add error codes and PBE init
17908 to library startup routines.
17912 * Further PKCS#12 integration. Added password based encryption, PKCS#8 and
17913 packing functions to asn1 and evp. Changed function names and error
17914 codes along the way.
17918 * PKCS12 integration: and so it begins... First of several patches to
17919 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
17920 objects to objects.h
17924 * Add a new 'indent' option to some X509V3 extension code. Initial ASN1
17925 and display support for Thawte strong extranet extension.
17929 * Add LinuxPPC support.
17931 *Jeff Dubrule <igor@pobox.org>*
17933 * Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
17934 bn_div_words in alpha.s.
17936 *Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie*
17938 * Make sure the RSA OAEP test is skipped under -DRSAref because
17939 OAEP isn't supported when OpenSSL is built with RSAref.
17941 *Ulf Moeller <ulf@fitug.de>*
17943 * Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
17944 so they no longer are missing under -DNOPROTO.
17946 *Soren S. Jorvang <soren@t.dk>*
17948 ### Changes between 0.9.1c and 0.9.2b [22 Mar 1999]
17950 * Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
17951 doesn't work when the session is reused. Coming soon!
17955 * Fix a security hole, that allows sessions to be reused in the wrong
17956 context thus bypassing client cert protection! All software that uses
17957 client certs and session caches in multiple contexts NEEDS PATCHING to
17958 allow session reuse! A fuller solution is in the works.
17960 *Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)*
17962 * Some more source tree cleanups (removed obsolete files
17963 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
17964 permission on "config" script to be executable) and a fix for the INSTALL
17967 *Ulf Moeller <ulf@fitug.de>*
17969 * Remove some legacy and erroneous uses of malloc, free instead of
17972 *Lennart Bang <lob@netstream.se>, with minor changes by Steve*
17974 * Make rsa_oaep_test return non-zero on error.
17976 *Ulf Moeller <ulf@fitug.de>*
17978 * Add support for native Solaris shared libraries. Configure
17979 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
17980 if someone would make that last step automatic.
17982 *Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>*
17984 * ctx_size was not built with the right compiler during "make links". Fixed.
17988 * Change the meaning of 'ALL' in the cipher list. It now means "everything
17989 except NULL ciphers". This means the default cipher list will no longer
17990 enable NULL ciphers. They need to be specifically enabled e.g. with
17991 the string "DEFAULT:eNULL".
17995 * Fix to RSA private encryption routines: if p < q then it would
17996 occasionally produce an invalid result. This will only happen with
17997 externally generated keys because OpenSSL (and SSLeay) ensure p > q.
18001 * Be less restrictive and allow also `perl util/perlpath.pl
18002 /path/to/bin/perl` in addition to `perl util/perlpath.pl /path/to/bin`,
18003 because this way one can also use an interpreter named `perl5` (which is
18004 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
18005 installed as `perl`).
18007 *Matthias Loepfe <Matthias.Loepfe@adnovum.ch>*
18009 * Let util/clean-depend.pl work also with older Perl 5.00x versions.
18011 *Matthias Loepfe <Matthias.Loepfe@adnovum.ch>*
18013 * Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
18014 advapi32.lib to Win32 build and change the pem test comparison
18015 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
18016 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
18017 and crypto/des/ede_cbcm_enc.c.
18021 * DES quad checksum was broken on big-endian architectures. Fixed.
18025 * Comment out two functions in bio.h that aren't implemented. Fix up the
18026 Win32 test batch file so it (might) work again. The Win32 test batch file
18027 is horrible: I feel ill....
18031 * Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
18032 in e_os.h. Audit of header files to check ANSI and non ANSI
18033 sections: 10 functions were absent from non ANSI section and not exported
18034 from Windows DLLs. Fixed up libeay.num for new functions.
18038 * Make `openssl version` output lines consistent.
18040 *Ralf S. Engelschall*
18042 * Fix Win32 symbol export lists for BIO functions: Added
18043 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
18044 to ms/libeay{16,32}.def.
18046 *Ralf S. Engelschall*
18048 * Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
18049 fine under Unix and passes some trivial tests I've now added. But the
18050 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
18051 added to make sure no one expects that this stuff really works in the
18052 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources
18053 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
18056 *Ralf S. Engelschall*
18058 * Fix the generation of two part addresses in perl.
18060 *Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie*
18062 * Add config entry for Linux on MIPS.
18064 *John Tobey <jtobey@channel1.com>*
18066 * Make links whenever Configure is run, unless we are on Windoze.
18070 * Permit extensions to be added to CRLs using crl_section in openssl.cnf.
18071 Currently only issuerAltName and AuthorityKeyIdentifier make any sense
18076 * Add a useful kludge to allow package maintainers to specify compiler and
18077 other platforms details on the command line without having to patch the
18078 Configure script every time: One now can use
18079 `perl Configure <id>:<details>`,
18080 i.e. platform ids are allowed to have details appended
18081 to them (separated by colons). This is treated as there would be a static
18082 pre-configured entry in Configure's %table under key `<id>` with value
18083 `<details>` and `perl Configure <id>` is called. So, when you want to
18084 perform a quick test-compile under FreeBSD 3.1 with pgcc and without
18085 assembler stuff you can use `perl Configure "FreeBSD-elf:pgcc:-O6:::"`
18086 now, which overrides the FreeBSD-elf entry on-the-fly.
18088 *Ralf S. Engelschall*
18090 * Disable new TLS1 ciphersuites by default: they aren't official yet.
18094 * Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
18095 on the `perl Configure ...` command line. This way one can compile
18096 OpenSSL libraries with Position Independent Code (PIC) which is needed
18097 for linking it into DSOs.
18099 *Ralf S. Engelschall*
18101 * Remarkably, export ciphers were totally broken and no-one had noticed!
18106 * Cleaned up the LICENSE document: The official contact for any license
18107 questions now is the OpenSSL core team under openssl-core@openssl.org.
18108 And add a paragraph about the dual-license situation to make sure people
18109 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
18110 to the OpenSSL toolkit.
18112 *Ralf S. Engelschall*
18114 * General source tree makefile cleanups: Made `making xxx in yyy...`
18115 display consistent in the source tree and replaced `/bin/rm` by `rm`.
18116 Additionally cleaned up the `make links` target: Remove unnecessary
18117 semicolons, subsequent redundant removes, inline point.sh into mklink.sh
18118 to speed processing and no longer clutter the display with confusing
18119 stuff. Instead only the actually done links are displayed.
18121 *Ralf S. Engelschall*
18123 * Permit null encryption ciphersuites, used for authentication only. It used
18124 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
18125 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
18130 * Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
18131 signed attributes when verifying signatures (this would break them),
18132 the detached data encoding was wrong and public keys obtained using
18133 X509_get_pubkey() weren't freed.
18137 * Add text documentation for the BUFFER functions. Also added a work around
18138 to a Win95 console bug. This was triggered by the password read stuff: the
18139 last character typed gets carried over to the next fread(). If you were
18140 generating a new cert request using 'req' for example then the last
18141 character of the passphrase would be CR which would then enter the first
18146 * Added the new 'Includes OpenSSL Cryptography Software' button as
18147 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
18148 button and can be used by applications based on OpenSSL to show the
18149 relationship to the OpenSSL project.
18151 *Ralf S. Engelschall*
18153 * Remove confusing variables in function signatures in files
18154 ssl/ssl_lib.c and ssl/ssl.h.
18156 *Lennart Bong <lob@kulthea.stacken.kth.se>*
18158 * Don't install bss_file.c under PREFIX/include/
18160 *Lennart Bong <lob@kulthea.stacken.kth.se>*
18162 * Get the Win32 compile working again. Modify mkdef.pl so it can handle
18163 functions that return function pointers and has support for NT specific
18164 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
18165 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
18166 unsigned to signed types: this was killing the Win32 compile.
18170 * Add new certificate file to stack functions,
18171 SSL_add_dir_cert_subjects_to_stack() and
18172 SSL_add_file_cert_subjects_to_stack(). These largely supplant
18173 SSL_load_client_CA_file(), and can be used to add multiple certs easily
18174 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
18175 This means that Apache-SSL and similar packages don't have to mess around
18176 to add as many CAs as they want to the preferred list.
18180 * Experiment with doxygen documentation. Currently only partially applied to
18182 See <http://www.stack.nl/~dimitri/doxygen/index.html>, and run doxygen with
18183 openssl.doxy as the configuration file.
18187 * Get rid of remaining C++-style comments which strict C compilers hate.
18189 *Ralf S. Engelschall, pointed out by Carlos Amengual*
18191 * Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
18192 compiled in by default: it has problems with large keys.
18196 * Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
18197 DH private keys and/or callback functions which directly correspond to
18198 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
18199 is needed for applications which have to configure certificates on a
18200 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
18202 For the RSA certificate situation is makes no difference, but
18203 for the DSA certificate situation this fixes the "no shared cipher"
18204 problem where the OpenSSL cipher selection procedure failed because the
18205 temporary keys were not overtaken from the context and the API provided
18206 no way to reconfigure them.
18207 The new functions now let applications reconfigure the stuff and they
18208 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
18209 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new
18210 non-public-API function ssl_cert_instantiate() is used as a helper
18211 function and also to reduce code redundancy inside ssl_rsa.c.
18213 *Ralf S. Engelschall*
18215 * Move s_server -dcert and -dkey options out of the undocumented feature
18216 area because they are useful for the DSA situation and should be
18217 recognized by the users.
18219 *Ralf S. Engelschall*
18221 * Fix the cipher decision scheme for export ciphers: the export bits are
18222 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
18223 SSL_EXP_MASK. So, the original variable has to be used instead of the
18224 already masked variable.
18226 *Richard Levitte <levitte@stacken.kth.se>*
18228 * Fix `port` variable from `int` to `unsigned int` in crypto/bio/b_sock.c
18230 *Richard Levitte <levitte@stacken.kth.se>*
18232 * Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
18233 from `int` to `unsigned int` because it is a length and initialized by
18234 EVP_DigestFinal() which expects an `unsigned int *`.
18236 *Richard Levitte <levitte@stacken.kth.se>*
18238 * Don't hard-code path to Perl interpreter on shebang line of Configure
18239 script. Instead use the usual Shell->Perl transition trick.
18241 *Ralf S. Engelschall*
18243 * Make `openssl x509 -noout -modulus`' functional also for DSA certificates
18244 (in addition to RSA certificates) to match the behaviour of `openssl dsa
18245 -noout -modulus` as it's already the case for `openssl rsa -noout
18246 -modulus`. For RSA the -modulus is the real "modulus" while for DSA
18247 currently the public key is printed (a decision which was already done by
18248 `openssl dsa -modulus` in the past) which serves a similar purpose.
18249 Additionally the NO_RSA no longer completely removes the whole -modulus
18250 option; it now only avoids using the RSA stuff. Same applies to NO_DSA
18253 *Ralf S. Engelschall*
18255 * Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
18256 BIO. See the source (crypto/evp/bio_ok.c) for more info.
18258 *Arne Ansper <arne@ats.cyber.ee>*
18260 * Dump the old yucky req code that tried (and failed) to allow raw OIDs
18261 to be added. Now both 'req' and 'ca' can use new objects defined in the
18266 * Add cool BIO that does syslog (or event log on NT).
18268 *Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie*
18270 * Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
18271 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
18272 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
18273 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
18277 * Add preliminary config info for new extension code.
18281 * Make RSA_NO_PADDING really use no padding.
18283 *Ulf Moeller <ulf@fitug.de>*
18285 * Generate errors when private/public key check is done.
18289 * Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
18290 for some CRL extensions and new objects added.
18294 * Really fix the ASN1 IMPLICIT bug this time... Partial support for private
18295 key usage extension and fuller support for authority key id.
18299 * Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
18300 padding method for RSA, which is recommended for new applications in PKCS
18301 #1 v2.0 (RFC 2437, October 1998).
18302 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
18303 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
18304 against Bleichbacher's attack on RSA.
18305 *Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
18308 * Updates to the new SSL compression code
18310 *Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)*
18312 * Fix so that the version number in the master secret, when passed
18313 via RSA, checks that if TLS was proposed, but we roll back to SSLv3
18314 (because the server will not accept higher), that the version number
18315 is 0x03,0x01, not 0x03,0x00
18317 *Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)*
18319 * Run extensive memory leak checks on SSL commands. Fixed *lots* of memory
18320 leaks in `ssl/` relating to new `X509_get_pubkey()` behaviour. Also fixes
18321 in `apps/` and an unrelated leak in `crypto/dsa/dsa_vrf.c`.
18325 * Support for RAW extensions where an arbitrary extension can be
18326 created by including its DER encoding. See `apps/openssl.cnf` for
18331 * Make sure latest Perl versions don't interpret some generated C array
18332 code as Perl array code in the crypto/err/err_genc.pl script.
18334 *Lars Weber <3weber@informatik.uni-hamburg.de>*
18336 * Modify ms/do_ms.bat to not generate assembly language makefiles since
18337 not many people have the assembler. Various Win32 compilation fixes and
18338 update to the INSTALL.W32 file with (hopefully) more accurate Win32
18339 build instructions.
18343 * Modify configure script 'Configure' to automatically create crypto/date.h
18344 file under Win32 and also build pem.h from pem.org. New script
18345 util/mkfiles.pl to create the MINFO file on environments that can't do a
18346 'make files': perl util/mkfiles.pl >MINFO should work.
18350 * Major rework of DES function declarations, in the pursuit of correctness
18351 and purity. As a result, many evil casts evaporated, and some weirdness,
18352 too. You may find this causes warnings in your code. Zapping your evil
18353 casts will probably fix them. Mostly.
18357 * Fix for a typo in asn1.h. Bug fix to object creation script
18358 obj_dat.pl. It considered a zero in an object definition to mean
18359 "end of object": none of the objects in objects.h have any zeros
18360 so it wasn't spotted.
18362 *Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>*
18364 * Add support for Triple DES Cipher Block Chaining with Output Feedback
18365 Masking (CBCM). In the absence of test vectors, the best I have been able
18366 to do is check that the decrypt undoes the encrypt, so far. Send me test
18367 vectors if you have them.
18371 * Correct calculation of key length for export ciphers (too much space was
18372 allocated for null ciphers). This has not been tested!
18376 * Modifications to the mkdef.pl for Win32 DEF file creation. The usage
18377 message is now correct (it understands "crypto" and "ssl" on its
18378 command line). There is also now an "update" option. This will update
18379 the util/ssleay.num and util/libeay.num files with any new functions.
18381 perl util/mkdef.pl crypto ssl update
18382 it will update them.
18386 * Overhauled the Perl interface:
18387 - ported BN stuff to OpenSSL's different BN library
18388 - made the perl/ source tree CVS-aware
18389 - renamed the package from SSLeay to OpenSSL (the files still contain
18390 their history because I've copied them in the repository)
18391 - removed obsolete files (the test scripts will be replaced
18392 by better Test::Harness variants in the future)
18394 *Ralf S. Engelschall*
18396 * First cut for a very conservative source tree cleanup:
18397 1. merge various obsolete readme texts into doc/ssleay.txt
18398 where we collect the old documents and readme texts.
18399 2. remove the first part of files where I'm already sure that we no
18400 longer need them because of three reasons: either they are just temporary
18401 files which were left by Eric or they are preserved original files where
18402 I've verified that the diff is also available in the CVS via "cvs diff
18403 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
18404 the crypto/md/ stuff).
18406 *Ralf S. Engelschall*
18408 * More extension code. Incomplete support for subject and issuer alt
18409 name, issuer and authority key id. Change the i2v function parameters
18410 and add an extra 'crl' parameter in the X509V3_CTX structure: guess
18411 what that's for :-) Fix to ASN1 macro which messed up
18412 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
18416 * Preliminary support for ENUMERATED type. This is largely copied from the
18421 * Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
18423 *Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)*
18425 * Make sure `make rehash` target really finds the `openssl` program.
18427 *Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>*
18429 * Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
18430 like to hear about it if this slows down other processors.
18434 * Add CygWin32 platform information to Configure script.
18436 *Alan Batie <batie@aahz.jf.intel.com>*
18438 * Fixed ms/32all.bat script: `no_asm` -> `no-asm`
18440 *Rainer W. Gerling <gerling@mpg-gv.mpg.de>*
18442 * New program nseq to manipulate netscape certificate sequences
18446 * Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
18451 * Fixes to BN code. Previously the default was to define BN_RECURSION
18452 but the BN code had some problems that would cause failures when
18453 doing certificate verification and some other functions.
18455 *Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)*
18457 * Add ASN1 and PEM code to support netscape certificate sequences.
18461 * Add ASN1 and PEM code to support netscape certificate sequences.
18465 * Add several PKIX and private extended key usage OIDs.
18469 * Modify the 'ca' program to handle the new extension code. Modify
18470 openssl.cnf for new extension format, add comments.
18474 * More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
18475 and add a sample to openssl.cnf so req -x509 now adds appropriate
18480 * Continued X509 V3 changes. Add to other makefiles, integrate with the
18481 error code, add initial support to X509_print() and x509 application.
18485 * Takes a deep breath and start adding X509 V3 extension support code. Add
18486 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
18487 stuff is currently isolated and isn't even compiled yet.
18491 * Continuing patches for GeneralizedTime. Fix up certificate and CRL
18492 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
18493 Removed the versions check from X509 routines when loading extensions:
18494 this allows certain broken certificates that don't set the version
18495 properly to be processed.
18499 * Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
18500 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
18501 can still be regenerated with "make depend".
18505 * Spelling mistake in C version of CAST-128.
18507 *Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>*
18509 * Changes to the error generation code. The perl script err-code.pl
18510 now reads in the old error codes and retains the old numbers, only
18511 adding new ones if necessary. It also only changes the .err files if new
18512 codes are added. The makefiles have been modified to only insert errors
18513 when needed (to avoid needlessly modifying header files). This is done
18514 by only inserting errors if the .err file is newer than the auto generated
18515 C file. To rebuild all the error codes from scratch (the old behaviour)
18516 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
18517 or delete all the .err files.
18521 * CAST-128 was incorrectly implemented for short keys. The C version has
18522 been fixed, but is untested. The assembler versions are also fixed, but
18523 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
18524 to regenerate it if needed.
18525 *Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
18526 Hagino <itojun@kame.net>*
18528 * File was opened incorrectly in randfile.c.
18530 *Ulf Möller <ulf@fitug.de>*
18532 * Beginning of support for GeneralizedTime. d2i, i2d, check and print
18533 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
18534 GeneralizedTime. ASN1_TIME is the proper type used in certificates et
18535 al: it's just almost always a UTCTime. Note this patch adds new error
18536 codes so do a "make errors" if there are problems.
18540 * Correct Linux 1 recognition in config.
18542 *Ulf Möller <ulf@fitug.de>*
18544 * Remove pointless MD5 hash when using DSA keys in ca.
18546 *Anonymous <nobody@replay.com>*
18548 * Generate an error if given an empty string as a cert directory. Also
18549 generate an error if handed NULL (previously returned 0 to indicate an
18550 error, but didn't set one).
18552 *Ben Laurie, reported by Anonymous <nobody@replay.com>*
18554 * Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
18558 * Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
18559 parameters. This was causing a warning which killed off the Win32 compile.
18563 * Remove C++ style comments from crypto/bn/bn_local.h.
18565 *Neil Costigan <neil.costigan@celocom.com>*
18567 * The function OBJ_txt2nid was broken. It was supposed to return a nid
18568 based on a text string, looking up short and long names and finally
18569 "dot" format. The "dot" format stuff didn't work. Added new function
18570 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
18571 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
18572 OID is not part of the table.
18576 * Add prototypes to X509 lookup/verify methods, fixing a bug in
18577 X509_LOOKUP_by_alias().
18581 * Sort openssl functions by name.
18585 * Get the `gendsa` command working and add it to the `list` command. Remove
18586 encryption from sample DSA keys (in case anyone is interested the password
18591 * Make *all* `*_free` functions accept a NULL pointer.
18593 *Frans Heymans <fheymans@isaserver.be>*
18595 * If a DH key is generated in s3_srvr.c, don't blow it by trying to use
18598 *Anonymous <nobody@replay.com>*
18600 * s_server should send the CAfile as acceptable CAs, not its own cert.
18602 *Bodo Moeller <3moeller@informatik.uni-hamburg.de>*
18604 * Don't blow it for numeric `-newkey` arguments to `apps/req`.
18606 *Bodo Moeller <3moeller@informatik.uni-hamburg.de>*
18608 * Temp key "for export" tests were wrong in s3_srvr.c.
18610 *Anonymous <nobody@replay.com>*
18612 * Add prototype for temp key callback functions
18613 SSL_CTX_set_tmp_{rsa,dh}_callback().
18617 * Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
18618 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
18622 * X509_name_add_entry() freed the wrong thing after an error.
18624 *Arne Ansper <arne@ats.cyber.ee>*
18626 * rsa_eay.c would attempt to free a NULL context.
18628 *Arne Ansper <arne@ats.cyber.ee>*
18630 * BIO_s_socket() had a broken should_retry() on Windoze.
18632 *Arne Ansper <arne@ats.cyber.ee>*
18634 * BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
18636 *Arne Ansper <arne@ats.cyber.ee>*
18638 * Make sure the already existing X509_STORE->depth variable is initialized
18639 in X509_STORE_new(), but document the fact that this variable is still
18640 unused in the certificate verification process.
18642 *Ralf S. Engelschall*
18644 * Fix the various library and `apps/` files to free up pkeys obtained from
18645 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
18649 * Fix reference counting in X509_PUBKEY_get(). This makes
18650 demos/maurice/example2.c work, amongst others, probably.
18652 *Steve Henson and Ben Laurie*
18654 * First cut of a cleanup for `apps/`. First the `ssleay` program is now named
18655 `openssl` and second, the shortcut symlinks for the `openssl <command>`
18656 are no longer created. This way we have a single and consistent command
18657 line interface `openssl <command>`, similar to `cvs <command>`.
18659 *Ralf S. Engelschall, Paul Sutton and Ben Laurie*
18661 * ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
18662 BIT STRING wrapper always have zero unused bits.
18666 * Add CA.pl, perl version of CA.sh, add extended key usage OID.
18670 * Make the top-level INSTALL documentation easier to understand.
18674 * Makefiles updated to exit if an error occurs in a sub-directory
18675 make (including if user presses ^C) [Paul Sutton]
18677 * Make Montgomery context stuff explicit in RSA data structure.
18681 * Fix build order of pem and err to allow for generated pem.h.
18685 * Fix renumbering bug in X509_NAME_delete_entry().
18689 * Enhanced the err-ins.pl script so it makes the error library number
18690 global and can add a library name. This is needed for external ASN1 and
18691 other error libraries.
18695 * Fixed sk_insert which never worked properly.
18699 * Fix ASN1 macros so they can handle indefinite length constructed
18700 EXPLICIT tags. Some non standard certificates use these: they can now
18705 * Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
18706 into a single doc/ssleay.txt bundle. This way the information is still
18707 preserved but no longer messes up this directory. Now it's new room for
18708 the new set of documentation files.
18710 *Ralf S. Engelschall*
18712 * SETs were incorrectly DER encoded. This was a major pain, because they
18713 shared code with SEQUENCEs, which aren't coded the same. This means that
18714 almost everything to do with SETs or SEQUENCEs has either changed name or
18715 number of arguments.
18717 *Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>*
18719 * Fix test data to work with the above.
18723 * Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
18724 was already fixed by Eric for 0.9.1 it seems.
18726 *Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>*
18728 * Autodetect FreeBSD3.
18732 * Fix various bugs in Configure. This affects the following platforms:
18736 unixware-2.0-pentium
18741 * Eliminate generated files from CVS. Reorder tests to regenerate files
18742 before they are needed.
18746 * Generate Makefile.ssl from Makefile.org (to keep CVS happy).
18750 ### Changes between 0.9.1b and 0.9.1c [23-Dec-1998]
18752 * Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
18753 changed SSLeay to OpenSSL in version strings.
18755 *Ralf S. Engelschall*
18757 * Some fixups to the top-level documents.
18761 * Fixed the nasty bug where rsaref.h was not found under compile-time
18762 because the symlink to include/ was missing.
18764 *Ralf S. Engelschall*
18766 * Incorporated the popular no-RSA/DSA-only patches
18767 which allow to compile a RSA-free SSLeay.
18769 *Andrew Cooke / Interrader Ldt., Ralf S. Engelschall*
18771 * Fixed nasty rehash problem under `make -f Makefile.ssl links`
18772 when "ssleay" is still not found.
18774 *Ralf S. Engelschall*
18776 * Added more platforms to Configure: Cray T3E, HPUX 11,
18778 *Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>*
18780 * Updated the README file.
18782 *Ralf S. Engelschall*
18784 * Added various .cvsignore files in the CVS repository subdirs
18785 to make a "cvs update" really silent.
18787 *Ralf S. Engelschall*
18789 * Recompiled the error-definition header files and added
18790 missing symbols to the Win32 linker tables.
18792 *Ralf S. Engelschall*
18794 * Cleaned up the top-level documents;
18795 o new files: CHANGES and LICENSE
18796 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
18797 o merged COPYRIGHT into LICENSE
18798 o removed obsolete TODO file
18799 o renamed MICROSOFT to INSTALL.W32
18801 *Ralf S. Engelschall*
18803 * Removed dummy files from the 0.9.1b source tree:
18804 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
18805 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
18806 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
18807 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
18808 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
18810 *Ralf S. Engelschall*
18812 * Added various platform portability fixes.
18816 * The Genesis of the OpenSSL rpject:
18817 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
18818 Young and Tim J. Hudson created while they were working for C2Net until
18821 *The OpenSSL Project*
18823 ### Changes between 0.9.0b and 0.9.1b [not released]
18825 * Updated a few CA certificates under certs/
18829 * Changed some BIGNUM api stuff.
18833 * Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
18834 DGUX x86, Linux Alpha, etc.
18838 * New COMP library [crypto/comp/] for SSL Record Layer Compression:
18839 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
18844 * Add -strparse option to asn1pars program which parses nested
18847 *Dr Stephen Henson <shenson@bigfoot.com>*
18849 * Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
18853 * DSA fix for "ca" program.
18857 * Added "-genkey" option to "dsaparam" program.
18861 * Added RIPE MD160 (rmd160) message digest.
18865 * Added -a (all) option to "ssleay version" command.
18869 * Added PLATFORM define which is the id given to Configure.
18873 * Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
18877 * Extended the ASN.1 parser routines.
18881 * Extended BIO routines to support REUSEADDR, seek, tell, etc.
18885 * Added a BN_CTX to the BN library.
18889 * Fixed the weak key values in DES library
18893 * Changed API in EVP library for cipher aliases.
18897 * Added support for RC2/64bit cipher.
18901 * Converted the lhash library to the crypto/mem.c functions.
18905 * Added more recognized ASN.1 object ids.
18909 * Added more RSA padding checks for SSL/TLS.
18913 * Added BIO proxy/filter functionality.
18917 * Added extra_certs to SSL_CTX which can be used
18918 send extra CA certificates to the client in the CA cert chain sending
18919 process. It can be configured with SSL_CTX_add_extra_chain_cert().
18923 * Now Fortezza is denied in the authentication phase because
18924 this is key exchange mechanism is not supported by SSLeay at all.
18928 * Additional PKCS1 checks.
18932 * Support the string "TLSv1" for all TLS v1 ciphers.
18936 * Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
18937 ex_data index of the SSL context in the X509_STORE_CTX ex_data.
18941 * Fixed a few memory leaks.
18945 * Fixed various code and comment typos.
18949 * A minor bug in ssl/s3_clnt.c where there would always be 4 0
18950 bytes sent in the client random.
18952 *Edward Bishop <ebishop@spyglass.com>*
18956 [CVE-2020-1971]: https://www.openssl.org/news/vulnerabilities.html#CVE-2020-1971
18957 [CVE-2020-1967]: https://www.openssl.org/news/vulnerabilities.html#CVE-2020-1967
18958 [CVE-2019-1563]: https://www.openssl.org/news/vulnerabilities.html#CVE-2019-1563
18959 [CVE-2019-1559]: https://www.openssl.org/news/vulnerabilities.html#CVE-2019-1559
18960 [CVE-2019-1552]: https://www.openssl.org/news/vulnerabilities.html#CVE-2019-1552
18961 [CVE-2019-1551]: https://www.openssl.org/news/vulnerabilities.html#CVE-2019-1551
18962 [CVE-2019-1549]: https://www.openssl.org/news/vulnerabilities.html#CVE-2019-1549
18963 [CVE-2019-1547]: https://www.openssl.org/news/vulnerabilities.html#CVE-2019-1547
18964 [CVE-2019-1543]: https://www.openssl.org/news/vulnerabilities.html#CVE-2019-1543
18965 [CVE-2018-5407]: https://www.openssl.org/news/vulnerabilities.html#CVE-2018-5407
18966 [CVE-2018-0739]: https://www.openssl.org/news/vulnerabilities.html#CVE-2018-0739
18967 [CVE-2018-0737]: https://www.openssl.org/news/vulnerabilities.html#CVE-2018-0737
18968 [CVE-2018-0735]: https://www.openssl.org/news/vulnerabilities.html#CVE-2018-0735
18969 [CVE-2018-0734]: https://www.openssl.org/news/vulnerabilities.html#CVE-2018-0734
18970 [CVE-2018-0733]: https://www.openssl.org/news/vulnerabilities.html#CVE-2018-0733
18971 [CVE-2018-0732]: https://www.openssl.org/news/vulnerabilities.html#CVE-2018-0732
18972 [CVE-2017-3738]: https://www.openssl.org/news/vulnerabilities.html#CVE-2017-3738
18973 [CVE-2017-3737]: https://www.openssl.org/news/vulnerabilities.html#CVE-2017-3737
18974 [CVE-2017-3736]: https://www.openssl.org/news/vulnerabilities.html#CVE-2017-3736
18975 [CVE-2017-3735]: https://www.openssl.org/news/vulnerabilities.html#CVE-2017-3735
18976 [CVE-2017-3733]: https://www.openssl.org/news/vulnerabilities.html#CVE-2017-3733
18977 [CVE-2017-3732]: https://www.openssl.org/news/vulnerabilities.html#CVE-2017-3732
18978 [CVE-2017-3731]: https://www.openssl.org/news/vulnerabilities.html#CVE-2017-3731
18979 [CVE-2017-3730]: https://www.openssl.org/news/vulnerabilities.html#CVE-2017-3730
18980 [CVE-2016-7055]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-7055
18981 [CVE-2016-7054]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-7054
18982 [CVE-2016-7053]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-7053
18983 [CVE-2016-7052]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-7052
18984 [CVE-2016-6309]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-6309
18985 [CVE-2016-6308]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-6308
18986 [CVE-2016-6307]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-6307
18987 [CVE-2016-6306]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-6306
18988 [CVE-2016-6305]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-6305
18989 [CVE-2016-6304]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-6304
18990 [CVE-2016-6303]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-6303
18991 [CVE-2016-6302]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-6302
18992 [CVE-2016-2183]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2183
18993 [CVE-2016-2182]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2182
18994 [CVE-2016-2181]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2181
18995 [CVE-2016-2180]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2180
18996 [CVE-2016-2179]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2179
18997 [CVE-2016-2178]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2178
18998 [CVE-2016-2177]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2177
18999 [CVE-2016-2176]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2176
19000 [CVE-2016-2109]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2109
19001 [CVE-2016-2107]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2107
19002 [CVE-2016-2106]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2106
19003 [CVE-2016-2105]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2105
19004 [CVE-2016-0800]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-0800
19005 [CVE-2016-0799]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-0799
19006 [CVE-2016-0798]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-0798
19007 [CVE-2016-0797]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-0797
19008 [CVE-2016-0705]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-0705
19009 [CVE-2016-0702]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-0702
19010 [CVE-2016-0701]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-0701
19011 [CVE-2015-3197]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-3197
19012 [CVE-2015-3196]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-3196
19013 [CVE-2015-3195]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-3195
19014 [CVE-2015-3194]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-3194
19015 [CVE-2015-3193]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-3193
19016 [CVE-2015-1793]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-1793
19017 [CVE-2015-1792]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-1792
19018 [CVE-2015-1791]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-1791
19019 [CVE-2015-1790]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-1790
19020 [CVE-2015-1789]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-1789
19021 [CVE-2015-1788]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-1788
19022 [CVE-2015-1787]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-1787
19023 [CVE-2015-0293]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0293
19024 [CVE-2015-0291]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0291
19025 [CVE-2015-0290]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0290
19026 [CVE-2015-0289]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0289
19027 [CVE-2015-0288]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0288
19028 [CVE-2015-0287]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0287
19029 [CVE-2015-0286]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0286
19030 [CVE-2015-0285]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0285
19031 [CVE-2015-0209]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0209
19032 [CVE-2015-0208]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0208
19033 [CVE-2015-0207]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0207
19034 [CVE-2015-0206]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0206
19035 [CVE-2015-0205]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0205
19036 [CVE-2015-0204]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0204
19037 [CVE-2014-8275]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-8275
19038 [CVE-2014-5139]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-5139
19039 [CVE-2014-3572]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3572
19040 [CVE-2014-3571]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3571
19041 [CVE-2014-3570]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3570
19042 [CVE-2014-3569]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3569
19043 [CVE-2014-3568]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3568
19044 [CVE-2014-3567]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3567
19045 [CVE-2014-3566]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3566
19046 [CVE-2014-3513]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3513
19047 [CVE-2014-3512]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3512
19048 [CVE-2014-3511]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3511
19049 [CVE-2014-3510]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3510
19050 [CVE-2014-3509]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3509
19051 [CVE-2014-3508]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3508
19052 [CVE-2014-3507]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3507
19053 [CVE-2014-3506]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3506
19054 [CVE-2014-3505]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3505
19055 [CVE-2014-3470]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3470
19056 [CVE-2014-0224]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-0224
19057 [CVE-2014-0221]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-0221
19058 [CVE-2014-0195]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-0195
19059 [CVE-2014-0160]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-0160
19060 [CVE-2014-0076]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-0076
19061 [CVE-2013-6450]: https://www.openssl.org/news/vulnerabilities.html#CVE-2013-6450
19062 [CVE-2013-4353]: https://www.openssl.org/news/vulnerabilities.html#CVE-2013-4353
19063 [CVE-2013-0169]: https://www.openssl.org/news/vulnerabilities.html#CVE-2013-0169
19064 [CVE-2013-0166]: https://www.openssl.org/news/vulnerabilities.html#CVE-2013-0166
19065 [CVE-2012-2686]: https://www.openssl.org/news/vulnerabilities.html#CVE-2012-2686
19066 [CVE-2012-2333]: https://www.openssl.org/news/vulnerabilities.html#CVE-2012-2333
19067 [CVE-2012-2110]: https://www.openssl.org/news/vulnerabilities.html#CVE-2012-2110
19068 [CVE-2012-0884]: https://www.openssl.org/news/vulnerabilities.html#CVE-2012-0884
19069 [CVE-2012-0050]: https://www.openssl.org/news/vulnerabilities.html#CVE-2012-0050
19070 [CVE-2012-0027]: https://www.openssl.org/news/vulnerabilities.html#CVE-2012-0027
19071 [CVE-2011-4619]: https://www.openssl.org/news/vulnerabilities.html#CVE-2011-4619
19072 [CVE-2011-4577]: https://www.openssl.org/news/vulnerabilities.html#CVE-2011-4577
19073 [CVE-2011-4576]: https://www.openssl.org/news/vulnerabilities.html#CVE-2011-4576
19074 [CVE-2011-4109]: https://www.openssl.org/news/vulnerabilities.html#CVE-2011-4109
19075 [CVE-2011-4108]: https://www.openssl.org/news/vulnerabilities.html#CVE-2011-4108
19076 [CVE-2011-3210]: https://www.openssl.org/news/vulnerabilities.html#CVE-2011-3210
19077 [CVE-2011-3207]: https://www.openssl.org/news/vulnerabilities.html#CVE-2011-3207
19078 [CVE-2011-0014]: https://www.openssl.org/news/vulnerabilities.html#CVE-2011-0014
19079 [CVE-2010-4252]: https://www.openssl.org/news/vulnerabilities.html#CVE-2010-4252
19080 [CVE-2010-4180]: https://www.openssl.org/news/vulnerabilities.html#CVE-2010-4180
19081 [CVE-2010-3864]: https://www.openssl.org/news/vulnerabilities.html#CVE-2010-3864
19082 [CVE-2010-1633]: https://www.openssl.org/news/vulnerabilities.html#CVE-2010-1633
19083 [CVE-2010-0740]: https://www.openssl.org/news/vulnerabilities.html#CVE-2010-0740
19084 [CVE-2010-0433]: https://www.openssl.org/news/vulnerabilities.html#CVE-2010-0433
19085 [CVE-2009-4355]: https://www.openssl.org/news/vulnerabilities.html#CVE-2009-4355
19086 [CVE-2009-3555]: https://www.openssl.org/news/vulnerabilities.html#CVE-2009-3555
19087 [CVE-2009-3245]: https://www.openssl.org/news/vulnerabilities.html#CVE-2009-3245
19088 [CVE-2009-1386]: https://www.openssl.org/news/vulnerabilities.html#CVE-2009-1386
19089 [CVE-2009-1379]: https://www.openssl.org/news/vulnerabilities.html#CVE-2009-1379
19090 [CVE-2009-1378]: https://www.openssl.org/news/vulnerabilities.html#CVE-2009-1378
19091 [CVE-2009-1377]: https://www.openssl.org/news/vulnerabilities.html#CVE-2009-1377
19092 [CVE-2009-0789]: https://www.openssl.org/news/vulnerabilities.html#CVE-2009-0789
19093 [CVE-2009-0591]: https://www.openssl.org/news/vulnerabilities.html#CVE-2009-0591
19094 [CVE-2009-0590]: https://www.openssl.org/news/vulnerabilities.html#CVE-2009-0590
19095 [CVE-2008-5077]: https://www.openssl.org/news/vulnerabilities.html#CVE-2008-5077
19096 [CVE-2008-1678]: https://www.openssl.org/news/vulnerabilities.html#CVE-2008-1678
19097 [CVE-2008-1672]: https://www.openssl.org/news/vulnerabilities.html#CVE-2008-1672
19098 [CVE-2008-0891]: https://www.openssl.org/news/vulnerabilities.html#CVE-2008-0891
19099 [CVE-2007-5135]: https://www.openssl.org/news/vulnerabilities.html#CVE-2007-5135
19100 [CVE-2007-4995]: https://www.openssl.org/news/vulnerabilities.html#CVE-2007-4995
19101 [CVE-2006-4343]: https://www.openssl.org/news/vulnerabilities.html#CVE-2006-4343
19102 [CVE-2006-4339]: https://www.openssl.org/news/vulnerabilities.html#CVE-2006-4339
19103 [CVE-2006-3738]: https://www.openssl.org/news/vulnerabilities.html#CVE-2006-3738
19104 [CVE-2006-2940]: https://www.openssl.org/news/vulnerabilities.html#CVE-2006-2940
19105 [CVE-2006-2937]: https://www.openssl.org/news/vulnerabilities.html#CVE-2006-2937
19106 [CVE-2005-2969]: https://www.openssl.org/news/vulnerabilities.html#CVE-2005-2969
19107 [CVE-2004-0112]: https://www.openssl.org/news/vulnerabilities.html#CVE-2004-0112
19108 [CVE-2004-0079]: https://www.openssl.org/news/vulnerabilities.html#CVE-2004-0079
19109 [CVE-2003-0851]: https://www.openssl.org/news/vulnerabilities.html#CVE-2003-0851
19110 [CVE-2003-0545]: https://www.openssl.org/news/vulnerabilities.html#CVE-2003-0545
19111 [CVE-2003-0544]: https://www.openssl.org/news/vulnerabilities.html#CVE-2003-0544
19112 [CVE-2003-0543]: https://www.openssl.org/news/vulnerabilities.html#CVE-2003-0543
19113 [CVE-2003-0078]: https://www.openssl.org/news/vulnerabilities.html#CVE-2003-0078
19114 [CVE-2002-0659]: https://www.openssl.org/news/vulnerabilities.html#CVE-2002-0659
19115 [CVE-2002-0657]: https://www.openssl.org/news/vulnerabilities.html#CVE-2002-0657
19116 [CVE-2002-0656]: https://www.openssl.org/news/vulnerabilities.html#CVE-2002-0656
19117 [CVE-2002-0655]: https://www.openssl.org/news/vulnerabilities.html#CVE-2002-0655