5 Changes between 1.1.0c and 1.1.0d [xx XXX xxxx]
9 Changes between 1.1.0b and 1.1.0c [10 Nov 2016]
11 *) ChaCha20/Poly1305 heap-buffer-overflow
13 TLS connections using *-CHACHA20-POLY1305 ciphersuites are susceptible to
14 a DoS attack by corrupting larger payloads. This can result in an OpenSSL
15 crash. This issue is not considered to be exploitable beyond a DoS.
17 This issue was reported to OpenSSL by Robert Święcki (Google Security Team)
21 *) CMS Null dereference
23 Applications parsing invalid CMS structures can crash with a NULL pointer
24 dereference. This is caused by a bug in the handling of the ASN.1 CHOICE
25 type in OpenSSL 1.1.0 which can result in a NULL value being passed to the
26 structure callback if an attempt is made to free certain invalid encodings.
27 Only CHOICE structures using a callback which do not handle NULL value are
30 This issue was reported to OpenSSL by Tyler Nighswander of ForAllSecure.
34 *) Montgomery multiplication may produce incorrect results
36 There is a carry propagating bug in the Broadwell-specific Montgomery
37 multiplication procedure that handles input lengths divisible by, but
38 longer than 256 bits. Analysis suggests that attacks against RSA, DSA
39 and DH private keys are impossible. This is because the subroutine in
40 question is not used in operations with the private key itself and an input
41 of the attacker's direct choice. Otherwise the bug can manifest itself as
42 transient authentication and key negotiation failures or reproducible
43 erroneous outcome of public-key operations with specially crafted input.
44 Among EC algorithms only Brainpool P-512 curves are affected and one
45 presumably can attack ECDH key negotiation. Impact was not analyzed in
46 detail, because pre-requisites for attack are considered unlikely. Namely
47 multiple clients have to choose the curve in question and the server has to
48 share the private key among them, neither of which is default behaviour.
49 Even then only clients that chose the curve will be affected.
51 This issue was publicly reported as transient failures and was not
52 initially recognized as a security issue. Thanks to Richard Morgan for
53 providing reproducible case.
57 *) OpenSSL now fails if it receives an unrecognised record type in TLS1.0
58 or TLS1.1. Previously this only happened in SSLv3 and TLS1.2. This is to
59 prevent issues where no progress is being made and the peer continually
60 sends unrecognised record types, using up resources processing them.
63 *) Removed automatic addition of RPATH in shared libraries and executables,
64 as this was a remainder from OpenSSL 1.0.x and isn't needed any more.
67 Changes between 1.1.0a and 1.1.0b [26 Sep 2016]
69 *) Fix Use After Free for large message sizes
71 The patch applied to address CVE-2016-6307 resulted in an issue where if a
72 message larger than approx 16k is received then the underlying buffer to
73 store the incoming message is reallocated and moved. Unfortunately a
74 dangling pointer to the old location is left which results in an attempt to
75 write to the previously freed location. This is likely to result in a
76 crash, however it could potentially lead to execution of arbitrary code.
78 This issue only affects OpenSSL 1.1.0a.
80 This issue was reported to OpenSSL by Robert Święcki.
84 Changes between 1.1.0 and 1.1.0a [22 Sep 2016]
86 *) OCSP Status Request extension unbounded memory growth
88 A malicious client can send an excessively large OCSP Status Request
89 extension. If that client continually requests renegotiation, sending a
90 large OCSP Status Request extension each time, then there will be unbounded
91 memory growth on the server. This will eventually lead to a Denial Of
92 Service attack through memory exhaustion. Servers with a default
93 configuration are vulnerable even if they do not support OCSP. Builds using
94 the "no-ocsp" build time option are not affected.
96 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
100 *) SSL_peek() hang on empty record
102 OpenSSL 1.1.0 SSL/TLS will hang during a call to SSL_peek() if the peer
103 sends an empty record. This could be exploited by a malicious peer in a
104 Denial Of Service attack.
106 This issue was reported to OpenSSL by Alex Gaynor.
110 *) Excessive allocation of memory in tls_get_message_header() and
111 dtls1_preprocess_fragment()
113 A (D)TLS message includes 3 bytes for its length in the header for the
114 message. This would allow for messages up to 16Mb in length. Messages of
115 this length are excessive and OpenSSL includes a check to ensure that a
116 peer is sending reasonably sized messages in order to avoid too much memory
117 being consumed to service a connection. A flaw in the logic of version
118 1.1.0 means that memory for the message is allocated too early, prior to
119 the excessive message length check. Due to way memory is allocated in
120 OpenSSL this could mean an attacker could force up to 21Mb to be allocated
121 to service a connection. This could lead to a Denial of Service through
122 memory exhaustion. However, the excessive message length check still takes
123 place, and this would cause the connection to immediately fail. Assuming
124 that the application calls SSL_free() on the failed conneciton in a timely
125 manner then the 21Mb of allocated memory will then be immediately freed
126 again. Therefore the excessive memory allocation will be transitory in
127 nature. This then means that there is only a security impact if:
129 1) The application does not call SSL_free() in a timely manner in the event
130 that the connection fails
132 2) The application is working in a constrained environment where there is
133 very little free memory
135 3) The attacker initiates multiple connection attempts such that there are
136 multiple connections in a state where memory has been allocated for the
137 connection; SSL_free() has not yet been called; and there is insufficient
138 memory to service the multiple requests.
140 Except in the instance of (1) above any Denial Of Service is likely to be
141 transitory because as soon as the connection fails the memory is
142 subsequently freed again in the SSL_free() call. However there is an
143 increased risk during this period of application crashes due to the lack of
144 memory - which would then mean a more serious Denial of Service.
146 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
147 (CVE-2016-6307 and CVE-2016-6308)
150 *) solaris-x86-cc, i.e. 32-bit configuration with vendor compiler,
151 had to be removed. Primary reason is that vendor assembler can't
152 assemble our modules with -KPIC flag. As result it, assembly
153 support, was not even available as option. But its lack means
154 lack of side-channel resistant code, which is incompatible with
155 security by todays standards. Fortunately gcc is readily available
156 prepackaged option, which we firmly point at...
159 Changes between 1.0.2h and 1.1.0 [25 Aug 2016]
161 *) Windows command-line tool supports UTF-8 opt-in option for arguments
162 and console input. Setting OPENSSL_WIN32_UTF8 environment variable
163 (to any value) allows Windows user to access PKCS#12 file generated
164 with Windows CryptoAPI and protected with non-ASCII password, as well
165 as files generated under UTF-8 locale on Linux also protected with
169 *) To mitigate the SWEET32 attack (CVE-2016-2183), 3DES cipher suites
170 have been disabled by default and removed from DEFAULT, just like RC4.
171 See the RC4 item below to re-enable both.
174 *) The method for finding the storage location for the Windows RAND seed file
175 has changed. First we check %RANDFILE%. If that is not set then we check
176 the directories %HOME%, %USERPROFILE% and %SYSTEMROOT% in that order. If
177 all else fails we fall back to C:\.
180 *) The EVP_EncryptUpdate() function has had its return type changed from void
181 to int. A return of 0 indicates and error while a return of 1 indicates
185 *) The flags RSA_FLAG_NO_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME and
186 DH_FLAG_NO_EXP_CONSTTIME which previously provided the ability to switch
187 off the constant time implementation for RSA, DSA and DH have been made
188 no-ops and deprecated.
191 *) Windows RAND implementation was simplified to only get entropy by
192 calling CryptGenRandom(). Various other RAND-related tickets
194 [Joseph Wylie Yandle, Rich Salz]
196 *) The stack and lhash API's were renamed to start with OPENSSL_SK_
197 and OPENSSL_LH_, respectively. The old names are available
198 with API compatibility. They new names are now completely documented.
201 *) Unify TYPE_up_ref(obj) methods signature.
202 SSL_CTX_up_ref(), SSL_up_ref(), X509_up_ref(), EVP_PKEY_up_ref(),
203 X509_CRL_up_ref(), X509_OBJECT_up_ref_count() methods are now returning an
204 int (instead of void) like all others TYPE_up_ref() methods.
205 So now these methods also check the return value of CRYPTO_atomic_add(),
206 and the validity of object reference counter.
207 [fdasilvayy@gmail.com]
209 *) With Windows Visual Studio builds, the .pdb files are installed
210 alongside the installed libraries and executables. For a static
211 library installation, ossl_static.pdb is the associate compiler
212 generated .pdb file to be used when linking programs.
215 *) Remove openssl.spec. Packaging files belong with the packagers.
218 *) Automatic Darwin/OSX configuration has had a refresh, it will now
219 recognise x86_64 architectures automatically. You can still decide
220 to build for a different bitness with the environment variable
221 KERNEL_BITS (can be 32 or 64), for example:
223 KERNEL_BITS=32 ./config
227 *) Change default algorithms in pkcs8 utility to use PKCS#5 v2.0,
228 256 bit AES and HMAC with SHA256.
231 *) Remove support for MIPS o32 ABI on IRIX (and IRIX only).
234 *) Triple-DES ciphers have been moved from HIGH to MEDIUM.
237 *) To enable users to have their own config files and build file templates,
238 Configure looks in the directory indicated by the environment variable
239 OPENSSL_LOCAL_CONFIG_DIR as well as the in-source Configurations/
240 directory. On VMS, OPENSSL_LOCAL_CONFIG_DIR is expected to be a logical
241 name and is used as is.
244 *) The following datatypes were made opaque: X509_OBJECT, X509_STORE_CTX,
245 X509_STORE, X509_LOOKUP, and X509_LOOKUP_METHOD. The unused type
246 X509_CERT_FILE_CTX was removed.
249 *) "shared" builds are now the default. To create only static libraries use
250 the "no-shared" Configure option.
253 *) Remove the no-aes, no-hmac, no-rsa, no-sha and no-md5 Configure options.
254 All of these option have not worked for some while and are fundamental
258 *) Make various cleanup routines no-ops and mark them as deprecated. Most
259 global cleanup functions are no longer required because they are handled
260 via auto-deinit (see OPENSSL_init_crypto and OPENSSL_init_ssl man pages).
261 Explicitly de-initing can cause problems (e.g. where a library that uses
262 OpenSSL de-inits, but an application is still using it). The affected
263 functions are CONF_modules_free(), ENGINE_cleanup(), OBJ_cleanup(),
264 EVP_cleanup(), BIO_sock_cleanup(), CRYPTO_cleanup_all_ex_data(),
265 RAND_cleanup(), SSL_COMP_free_compression_methods(), ERR_free_strings() and
269 *) --strict-warnings no longer enables runtime debugging options
270 such as REF_DEBUG. Instead, debug options are automatically
271 enabled with '--debug' builds.
272 [Andy Polyakov, Emilia Käsper]
274 *) Made DH and DH_METHOD opaque. The structures for managing DH objects
275 have been moved out of the public header files. New functions for managing
276 these have been added.
279 *) Made RSA and RSA_METHOD opaque. The structures for managing RSA
280 objects have been moved out of the public header files. New
281 functions for managing these have been added.
284 *) Made DSA and DSA_METHOD opaque. The structures for managing DSA objects
285 have been moved out of the public header files. New functions for managing
286 these have been added.
289 *) Made BIO and BIO_METHOD opaque. The structures for managing BIOs have been
290 moved out of the public header files. New functions for managing these
294 *) Removed no-rijndael as a config option. Rijndael is an old name for AES.
297 *) Removed the mk1mf build scripts.
300 *) Headers are now wrapped, if necessary, with OPENSSL_NO_xxx, so
301 it is always safe to #include a header now.
304 *) Removed the aged BC-32 config and all its supporting scripts
307 *) Removed support for Ultrix, Netware, and OS/2.
310 *) Add support for HKDF.
313 *) Add support for blake2b and blake2s
316 *) Added support for "pipelining". Ciphers that have the
317 EVP_CIPH_FLAG_PIPELINE flag set have a capability to process multiple
318 encryptions/decryptions simultaneously. There are currently no built-in
319 ciphers with this property but the expectation is that engines will be able
320 to offer it to significantly improve throughput. Support has been extended
321 into libssl so that multiple records for a single connection can be
322 processed in one go (for >=TLS 1.1).
325 *) Added the AFALG engine. This is an async capable engine which is able to
326 offload work to the Linux kernel. In this initial version it only supports
327 AES128-CBC. The kernel must be version 4.1.0 or greater.
330 *) OpenSSL now uses a new threading API. It is no longer necessary to
331 set locking callbacks to use OpenSSL in a multi-threaded environment. There
332 are two supported threading models: pthreads and windows threads. It is
333 also possible to configure OpenSSL at compile time for "no-threads". The
334 old threading API should no longer be used. The functions have been
335 replaced with "no-op" compatibility macros.
336 [Alessandro Ghedini, Matt Caswell]
338 *) Modify behavior of ALPN to invoke callback after SNI/servername
339 callback, such that updates to the SSL_CTX affect ALPN.
342 *) Add SSL_CIPHER queries for authentication and key-exchange.
345 *) Changes to the DEFAULT cipherlist:
346 - Prefer (EC)DHE handshakes over plain RSA.
347 - Prefer AEAD ciphers over legacy ciphers.
348 - Prefer ECDSA over RSA when both certificates are available.
349 - Prefer TLSv1.2 ciphers/PRF.
350 - Remove DSS, SEED, IDEA, CAMELLIA, and AES-CCM from the
354 *) Change the ECC default curve list to be this, in order: x25519,
355 secp256r1, secp521r1, secp384r1.
358 *) RC4 based libssl ciphersuites are now classed as "weak" ciphers and are
359 disabled by default. They can be re-enabled using the
360 enable-weak-ssl-ciphers option to Configure.
363 *) If the server has ALPN configured, but supports no protocols that the
364 client advertises, send a fatal "no_application_protocol" alert.
365 This behaviour is SHALL in RFC 7301, though it isn't universally
366 implemented by other servers.
369 *) Add X25519 support.
370 Add ASN.1 and EVP_PKEY methods for X25519. This includes support
371 for public and private key encoding using the format documented in
372 draft-ietf-curdle-pkix-02. The coresponding EVP_PKEY method supports
373 key generation and key derivation.
375 TLS support complies with draft-ietf-tls-rfc4492bis-08 and uses
379 *) Deprecate SRP_VBASE_get_by_user.
380 SRP_VBASE_get_by_user had inconsistent memory management behaviour.
381 In order to fix an unavoidable memory leak (CVE-2016-0798),
382 SRP_VBASE_get_by_user was changed to ignore the "fake user" SRP
383 seed, even if the seed is configured.
385 Users should use SRP_VBASE_get1_by_user instead. Note that in
386 SRP_VBASE_get1_by_user, caller must free the returned value. Note
387 also that even though configuring the SRP seed attempts to hide
388 invalid usernames by continuing the handshake with fake
389 credentials, this behaviour is not constant time and no strong
390 guarantees are made that the handshake is indistinguishable from
391 that of a valid user.
394 *) Configuration change; it's now possible to build dynamic engines
395 without having to build shared libraries and vice versa. This
396 only applies to the engines in engines/, those in crypto/engine/
397 will always be built into libcrypto (i.e. "static").
399 Building dynamic engines is enabled by default; to disable, use
400 the configuration option "disable-dynamic-engine".
402 The only requirements for building dynamic engines are the
403 presence of the DSO module and building with position independent
404 code, so they will also automatically be disabled if configuring
405 with "disable-dso" or "disable-pic".
407 The macros OPENSSL_NO_STATIC_ENGINE and OPENSSL_NO_DYNAMIC_ENGINE
408 are also taken away from openssl/opensslconf.h, as they are
412 *) Configuration change; if there is a known flag to compile
413 position independent code, it will always be applied on the
414 libcrypto and libssl object files, and never on the application
415 object files. This means other libraries that use routines from
416 libcrypto / libssl can be made into shared libraries regardless
417 of how OpenSSL was configured.
419 If this isn't desirable, the configuration options "disable-pic"
420 or "no-pic" can be used to disable the use of PIC. This will
421 also disable building shared libraries and dynamic engines.
424 *) Removed JPAKE code. It was experimental and has no wide use.
427 *) The INSTALL_PREFIX Makefile variable has been renamed to
428 DESTDIR. That makes for less confusion on what this variable
429 is for. Also, the configuration option --install_prefix is
433 *) Heartbeat for TLS has been removed and is disabled by default
434 for DTLS; configure with enable-heartbeats. Code that uses the
435 old #define's might need to be updated.
436 [Emilia Käsper, Rich Salz]
438 *) Rename REF_CHECK to REF_DEBUG.
441 *) New "unified" build system
443 The "unified" build system is aimed to be a common system for all
444 platforms we support. With it comes new support for VMS.
446 This system builds supports building in a different directory tree
447 than the source tree. It produces one Makefile (for unix family
448 or lookalikes), or one descrip.mms (for VMS).
450 The source of information to make the Makefile / descrip.mms is
451 small files called 'build.info', holding the necessary
452 information for each directory with source to compile, and a
453 template in Configurations, like unix-Makefile.tmpl or
456 With this change, the library names were also renamed on Windows
457 and on VMS. They now have names that are closer to the standard
458 on Unix, and include the major version number, and in certain
459 cases, the architecture they are built for. See "Notes on shared
460 libraries" in INSTALL.
462 We rely heavily on the perl module Text::Template.
465 *) Added support for auto-initialisation and de-initialisation of the library.
466 OpenSSL no longer requires explicit init or deinit routines to be called,
467 except in certain circumstances. See the OPENSSL_init_crypto() and
468 OPENSSL_init_ssl() man pages for further information.
471 *) The arguments to the DTLSv1_listen function have changed. Specifically the
472 "peer" argument is now expected to be a BIO_ADDR object.
474 *) Rewrite of BIO networking library. The BIO library lacked consistent
475 support of IPv6, and adding it required some more extensive
476 modifications. This introduces the BIO_ADDR and BIO_ADDRINFO types,
477 which hold all types of addresses and chains of address information.
478 It also introduces a new API, with functions like BIO_socket,
479 BIO_connect, BIO_listen, BIO_lookup and a rewrite of BIO_accept.
480 The source/sink BIOs BIO_s_connect, BIO_s_accept and BIO_s_datagram
481 have been adapted accordingly.
484 *) RSA_padding_check_PKCS1_type_1 now accepts inputs with and without
488 *) CRIME protection: disable compression by default, even if OpenSSL is
489 compiled with zlib enabled. Applications can still enable compression
490 by calling SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION), or by
491 using the SSL_CONF library to configure compression.
494 *) The signature of the session callback configured with
495 SSL_CTX_sess_set_get_cb was changed. The read-only input buffer
496 was explicitly marked as 'const unsigned char*' instead of
500 *) Always DPURIFY. Remove the use of uninitialized memory in the
501 RNG, and other conditional uses of DPURIFY. This makes -DPURIFY a no-op.
504 *) Removed many obsolete configuration items, including
505 DES_PTR, DES_RISC1, DES_RISC2, DES_INT
506 MD2_CHAR, MD2_INT, MD2_LONG
508 IDEA_SHORT, IDEA_LONG
509 RC2_SHORT, RC2_LONG, RC4_LONG, RC4_CHUNK, RC4_INDEX
510 [Rich Salz, with advice from Andy Polyakov]
512 *) Many BN internals have been moved to an internal header file.
513 [Rich Salz with help from Andy Polyakov]
515 *) Configuration and writing out the results from it has changed.
516 Files such as Makefile include/openssl/opensslconf.h and are now
517 produced through general templates, such as Makefile.in and
518 crypto/opensslconf.h.in and some help from the perl module
521 Also, the center of configuration information is no longer
522 Makefile. Instead, Configure produces a perl module in
523 configdata.pm which holds most of the config data (in the hash
524 table %config), the target data that comes from the target
525 configuration in one of the Configurations/*.conf files (in
529 *) To clarify their intended purposes, the Configure options
530 --prefix and --openssldir change their semantics, and become more
531 straightforward and less interdependent.
533 --prefix shall be used exclusively to give the location INSTALLTOP
534 where programs, scripts, libraries, include files and manuals are
535 going to be installed. The default is now /usr/local.
537 --openssldir shall be used exclusively to give the default
538 location OPENSSLDIR where certificates, private keys, CRLs are
539 managed. This is also where the default openssl.cnf gets
541 If the directory given with this option is a relative path, the
542 values of both the --prefix value and the --openssldir value will
543 be combined to become OPENSSLDIR.
544 The default for --openssldir is INSTALLTOP/ssl.
546 Anyone who uses --openssldir to specify where OpenSSL is to be
547 installed MUST change to use --prefix instead.
550 *) The GOST engine was out of date and therefore it has been removed. An up
551 to date GOST engine is now being maintained in an external repository.
552 See: https://wiki.openssl.org/index.php/Binaries. Libssl still retains
553 support for GOST ciphersuites (these are only activated if a GOST engine
557 *) EGD is no longer supported by default; use enable-egd when
559 [Ben Kaduk and Rich Salz]
561 *) The distribution now has Makefile.in files, which are used to
562 create Makefile's when Configure is run. *Configure must be run
563 before trying to build now.*
566 *) The return value for SSL_CIPHER_description() for error conditions
570 *) Support for RFC6698/RFC7671 DANE TLSA peer authentication.
572 Obtaining and performing DNSSEC validation of TLSA records is
573 the application's responsibility. The application provides
574 the TLSA records of its choice to OpenSSL, and these are then
575 used to authenticate the peer.
577 The TLSA records need not even come from DNS. They can, for
578 example, be used to implement local end-entity certificate or
579 trust-anchor "pinning", where the "pin" data takes the form
580 of TLSA records, which can augment or replace verification
581 based on the usual WebPKI public certification authorities.
584 *) Revert default OPENSSL_NO_DEPRECATED setting. Instead OpenSSL
585 continues to support deprecated interfaces in default builds.
586 However, applications are strongly advised to compile their
587 source files with -DOPENSSL_API_COMPAT=0x10100000L, which hides
588 the declarations of all interfaces deprecated in 0.9.8, 1.0.0
589 or the 1.1.0 releases.
591 In environments in which all applications have been ported to
592 not use any deprecated interfaces OpenSSL's Configure script
593 should be used with the --api=1.1.0 option to entirely remove
594 support for the deprecated features from the library and
595 unconditionally disable them in the installed headers.
596 Essentially the same effect can be achieved with the "no-deprecated"
597 argument to Configure, except that this will always restrict
598 the build to just the latest API, rather than a fixed API
601 As applications are ported to future revisions of the API,
602 they should update their compile-time OPENSSL_API_COMPAT define
603 accordingly, but in most cases should be able to continue to
604 compile with later releases.
606 The OPENSSL_API_COMPAT versions for 1.0.0, and 0.9.8 are
607 0x10000000L and 0x00908000L, respectively. However those
608 versions did not support the OPENSSL_API_COMPAT feature, and
609 so applications are not typically tested for explicit support
610 of just the undeprecated features of either release.
613 *) Add support for setting the minimum and maximum supported protocol.
614 It can bet set via the SSL_set_min_proto_version() and
615 SSL_set_max_proto_version(), or via the SSL_CONF's MinProtocol and
616 MaxProtcol. It's recommended to use the new APIs to disable
617 protocols instead of disabling individual protocols using
618 SSL_set_options() or SSL_CONF's Protocol. This change also
619 removes support for disabling TLS 1.2 in the OpenSSL TLS
620 client at compile time by defining OPENSSL_NO_TLS1_2_CLIENT.
623 *) Support for ChaCha20 and Poly1305 added to libcrypto and libssl.
626 *) New EC_KEY_METHOD, this replaces the older ECDSA_METHOD and ECDH_METHOD
627 and integrates ECDSA and ECDH functionality into EC. Implementations can
628 now redirect key generation and no longer need to convert to or from
631 Note: the ecdsa.h and ecdh.h headers are now no longer needed and just
632 include the ec.h header file instead.
635 *) Remove support for all 40 and 56 bit ciphers. This includes all the export
636 ciphers who are no longer supported and drops support the ephemeral RSA key
637 exchange. The LOW ciphers currently doesn't have any ciphers in it.
640 *) Made EVP_MD_CTX, EVP_MD, EVP_CIPHER_CTX, EVP_CIPHER and HMAC_CTX
641 opaque. For HMAC_CTX, the following constructors and destructors
644 HMAC_CTX *HMAC_CTX_new(void);
645 void HMAC_CTX_free(HMAC_CTX *ctx);
647 For EVP_MD and EVP_CIPHER, complete APIs to create, fill and
648 destroy such methods has been added. See EVP_MD_meth_new(3) and
649 EVP_CIPHER_meth_new(3) for documentation.
652 1) EVP_MD_CTX_cleanup(), EVP_CIPHER_CTX_cleanup() and
653 HMAC_CTX_cleanup() were removed. HMAC_CTX_reset() and
654 EVP_MD_CTX_reset() should be called instead to reinitialise
655 an already created structure.
656 2) For consistency with the majority of our object creators and
657 destructors, EVP_MD_CTX_(create|destroy) were renamed to
658 EVP_MD_CTX_(new|free). The old names are retained as macros
659 for deprecated builds.
662 *) Added ASYNC support. Libcrypto now includes the async sub-library to enable
663 cryptographic operations to be performed asynchronously as long as an
664 asynchronous capable engine is used. See the ASYNC_start_job() man page for
665 further details. Libssl has also had this capability integrated with the
666 introduction of the new mode SSL_MODE_ASYNC and associated error
667 SSL_ERROR_WANT_ASYNC. See the SSL_CTX_set_mode() and SSL_get_error() man
668 pages. This work was developed in partnership with Intel Corp.
671 *) SSL_{CTX_}set_ecdh_auto() has been removed and ECDH is support is
672 always enabled now. If you want to disable the support you should
673 exclude it using the list of supported ciphers. This also means that the
674 "-no_ecdhe" option has been removed from s_server.
677 *) SSL_{CTX}_set_tmp_ecdh() which can set 1 EC curve now internally calls
678 SSL_{CTX_}set1_curves() which can set a list.
681 *) Remove support for SSL_{CTX_}set_tmp_ecdh_callback(). You should set the
682 curve you want to support using SSL_{CTX_}set1_curves().
685 *) State machine rewrite. The state machine code has been significantly
686 refactored in order to remove much duplication of code and solve issues
687 with the old code (see ssl/statem/README for further details). This change
688 does have some associated API changes. Notably the SSL_state() function
689 has been removed and replaced by SSL_get_state which now returns an
690 "OSSL_HANDSHAKE_STATE" instead of an int. SSL_set_state() has been removed
691 altogether. The previous handshake states defined in ssl.h and ssl3.h have
695 *) All instances of the string "ssleay" in the public API were replaced
696 with OpenSSL (case-matching; e.g., OPENSSL_VERSION for #define's)
697 Some error codes related to internal RSA_eay API's were renamed.
700 *) The demo files in crypto/threads were moved to demo/threads.
703 *) Removed obsolete engines: 4758cca, aep, atalla, cswift, nuron, gmp,
705 [Matt Caswell, Rich Salz]
707 *) New ASN.1 embed macro.
709 New ASN.1 macro ASN1_EMBED. This is the same as ASN1_SIMPLE except the
710 structure is not allocated: it is part of the parent. That is instead of
718 This reduces memory fragmentation and make it impossible to accidentally
719 set a mandatory field to NULL.
721 This currently only works for some fields specifically a SEQUENCE, CHOICE,
722 or ASN1_STRING type which is part of a parent SEQUENCE. Since it is
723 equivalent to ASN1_SIMPLE it cannot be tagged, OPTIONAL, SET OF or
727 *) Remove EVP_CHECK_DES_KEY, a compile-time option that never compiled.
730 *) Removed DES and RC4 ciphersuites from DEFAULT. Also removed RC2 although
731 in 1.0.2 EXPORT was already removed and the only RC2 ciphersuite is also
732 an EXPORT one. COMPLEMENTOFDEFAULT has been updated accordingly to add
733 DES and RC4 ciphersuites.
736 *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
737 This changes the decoding behaviour for some invalid messages,
738 though the change is mostly in the more lenient direction, and
739 legacy behaviour is preserved as much as possible.
742 *) Fix no-stdio build.
743 [ David Woodhouse <David.Woodhouse@intel.com> and also
744 Ivan Nestlerode <ivan.nestlerode@sonos.com> ]
746 *) New testing framework
747 The testing framework has been largely rewritten and is now using
748 perl and the perl modules Test::Harness and an extended variant of
749 Test::More called OpenSSL::Test to do its work. All test scripts in
750 test/ have been rewritten into test recipes, and all direct calls to
751 executables in test/Makefile have become individual recipes using the
752 simplified testing OpenSSL::Test::Simple.
754 For documentation on our testing modules, do:
756 perldoc test/testlib/OpenSSL/Test/Simple.pm
757 perldoc test/testlib/OpenSSL/Test.pm
761 *) Revamped memory debug; only -DCRYPTO_MDEBUG and -DCRYPTO_MDEBUG_ABORT
762 are used; the latter aborts on memory leaks (usually checked on exit).
763 Some undocumented "set malloc, etc., hooks" functions were removed
764 and others were changed. All are now documented.
767 *) In DSA_generate_parameters_ex, if the provided seed is too short,
769 [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>]
771 *) Rewrite PSK to support ECDHE_PSK, DHE_PSK and RSA_PSK. Add ciphersuites
772 from RFC4279, RFC4785, RFC5487, RFC5489.
774 Thanks to Christian J. Dietrich and Giuseppe D'Angelo for the
775 original RSA_PSK patch.
778 *) Dropped support for the SSL3_FLAGS_DELAY_CLIENT_FINISHED flag. This SSLeay
779 era flag was never set throughout the codebase (only read). Also removed
780 SSL3_FLAGS_POP_BUFFER which was only used if
781 SSL3_FLAGS_DELAY_CLIENT_FINISHED was also set.
784 *) Changed the default name options in the "ca", "crl", "req" and "x509"
785 to be "oneline" instead of "compat".
788 *) Remove SSL_OP_TLS_BLOCK_PADDING_BUG. This is SSLeay legacy, we're
789 not aware of clients that still exhibit this bug, and the workaround
790 hasn't been working properly for a while.
793 *) The return type of BIO_number_read() and BIO_number_written() as well as
794 the corresponding num_read and num_write members in the BIO structure has
795 changed from unsigned long to uint64_t. On platforms where an unsigned
796 long is 32 bits (e.g. Windows) these counters could overflow if >4Gb is
800 *) Given the pervasive nature of TLS extensions it is inadvisable to run
801 OpenSSL without support for them. It also means that maintaining
802 the OPENSSL_NO_TLSEXT option within the code is very invasive (and probably
803 not well tested). Therefore the OPENSSL_NO_TLSEXT option has been removed.
806 *) Removed support for the two export grade static DH ciphersuites
807 EXP-DH-RSA-DES-CBC-SHA and EXP-DH-DSS-DES-CBC-SHA. These two ciphersuites
808 were newly added (along with a number of other static DH ciphersuites) to
809 1.0.2. However the two export ones have *never* worked since they were
810 introduced. It seems strange in any case to be adding new export
811 ciphersuites, and given "logjam" it also does not seem correct to fix them.
814 *) Version negotiation has been rewritten. In particular SSLv23_method(),
815 SSLv23_client_method() and SSLv23_server_method() have been deprecated,
816 and turned into macros which simply call the new preferred function names
817 TLS_method(), TLS_client_method() and TLS_server_method(). All new code
818 should use the new names instead. Also as part of this change the ssl23.h
819 header file has been removed.
822 *) Support for Kerberos ciphersuites in TLS (RFC2712) has been removed. This
823 code and the associated standard is no longer considered fit-for-purpose.
826 *) RT2547 was closed. When generating a private key, try to make the
827 output file readable only by the owner. This behavior change might
828 be noticeable when interacting with other software.
830 *) Documented all exdata functions. Added CRYPTO_free_ex_index.
834 *) Added HTTP GET support to the ocsp command.
837 *) Changed default digest for the dgst and enc commands from MD5 to
841 *) RAND_pseudo_bytes has been deprecated. Users should use RAND_bytes instead.
844 *) Added support for TLS extended master secret from
845 draft-ietf-tls-session-hash-03.txt. Thanks for Alfredo Pironti for an
846 initial patch which was a great help during development.
849 *) All libssl internal structures have been removed from the public header
850 files, and the OPENSSL_NO_SSL_INTERN option has been removed (since it is
851 now redundant). Users should not attempt to access internal structures
852 directly. Instead they should use the provided API functions.
855 *) config has been changed so that by default OPENSSL_NO_DEPRECATED is used.
856 Access to deprecated functions can be re-enabled by running config with
857 "enable-deprecated". In addition applications wishing to use deprecated
858 functions must define OPENSSL_USE_DEPRECATED. Note that this new behaviour
859 will, by default, disable some transitive includes that previously existed
860 in the header files (e.g. ec.h will no longer, by default, include bn.h)
863 *) Added support for OCB mode. OpenSSL has been granted a patent license
864 compatible with the OpenSSL license for use of OCB. Details are available
865 at https://www.openssl.org/source/OCB-patent-grant-OpenSSL.pdf. Support
866 for OCB can be removed by calling config with no-ocb.
869 *) SSLv2 support has been removed. It still supports receiving a SSLv2
870 compatible client hello.
873 *) Increased the minimal RSA keysize from 256 to 512 bits [Rich Salz],
874 done while fixing the error code for the key-too-small case.
875 [Annie Yousar <a.yousar@informatik.hu-berlin.de>]
877 *) CA.sh has been removmed; use CA.pl instead.
880 *) Removed old DES API.
883 *) Remove various unsupported platforms:
889 Sinix/ReliantUNIX RM400
894 16-bit platforms such as WIN16
897 *) Clean up OPENSSL_NO_xxx #define's
898 Use setbuf() and remove OPENSSL_NO_SETVBUF_IONBF
899 Rename OPENSSL_SYSNAME_xxx to OPENSSL_SYS_xxx
900 OPENSSL_NO_EC{DH,DSA} merged into OPENSSL_NO_EC
901 OPENSSL_NO_RIPEMD160, OPENSSL_NO_RIPEMD merged into OPENSSL_NO_RMD160
902 OPENSSL_NO_FP_API merged into OPENSSL_NO_STDIO
903 Remove OPENSSL_NO_BIO OPENSSL_NO_BUFFER OPENSSL_NO_CHAIN_VERIFY
904 OPENSSL_NO_EVP OPENSSL_NO_FIPS_ERR OPENSSL_NO_HASH_COMP
905 OPENSSL_NO_LHASH OPENSSL_NO_OBJECT OPENSSL_NO_SPEED OPENSSL_NO_STACK
906 OPENSSL_NO_X509 OPENSSL_NO_X509_VERIFY
907 Remove MS_STATIC; it's a relic from platforms <32 bits.
910 *) Cleaned up dead code
911 Remove all but one '#ifdef undef' which is to be looked at.
914 *) Clean up calling of xxx_free routines.
915 Just like free(), fix most of the xxx_free routines to accept
916 NULL. Remove the non-null checks from callers. Save much code.
919 *) Add secure heap for storage of private keys (when possible).
920 Add BIO_s_secmem(), CBIGNUM, etc.
921 Contributed by Akamai Technologies under our Corporate CLA.
924 *) Experimental support for a new, fast, unbiased prime candidate generator,
925 bn_probable_prime_dh_coprime(). Not currently used by any prime generator.
926 [Felix Laurie von Massenbach <felix@erbridge.co.uk>]
928 *) New output format NSS in the sess_id command line tool. This allows
929 exporting the session id and the master key in NSS keylog format.
930 [Martin Kaiser <martin@kaiser.cx>]
932 *) Harmonize version and its documentation. -f flag is used to display
934 [mancha <mancha1@zoho.com>]
936 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
937 in i2d_ECPrivateKey. Thanks to Ted Unangst for feedback on this issue.
938 [mancha <mancha1@zoho.com>]
940 *) Fix some double frees. These are not thought to be exploitable.
941 [mancha <mancha1@zoho.com>]
943 *) A missing bounds check in the handling of the TLS heartbeat extension
944 can be used to reveal up to 64k of memory to a connected client or
947 Thanks for Neel Mehta of Google Security for discovering this bug and to
948 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
949 preparing the fix (CVE-2014-0160)
950 [Adam Langley, Bodo Moeller]
952 *) Fix for the attack described in the paper "Recovering OpenSSL
953 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
954 by Yuval Yarom and Naomi Benger. Details can be obtained from:
955 http://eprint.iacr.org/2014/140
957 Thanks to Yuval Yarom and Naomi Benger for discovering this
958 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
959 [Yuval Yarom and Naomi Benger]
961 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
962 this fixes a limitation in previous versions of OpenSSL.
965 *) Experimental encrypt-then-mac support.
967 Experimental support for encrypt then mac from
968 draft-gutmann-tls-encrypt-then-mac-02.txt
970 To enable it set the appropriate extension number (0x42 for the test
971 server) using e.g. -DTLSEXT_TYPE_encrypt_then_mac=0x42
973 For non-compliant peers (i.e. just about everything) this should have no
976 WARNING: EXPERIMENTAL, SUBJECT TO CHANGE.
980 *) Add EVP support for key wrapping algorithms, to avoid problems with
981 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
982 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
983 algorithms and include tests cases.
986 *) Extend CMS code to support RSA-PSS signatures and RSA-OAEP for
990 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
991 MGF1 digest and OAEP label.
994 *) Make openssl verify return errors.
995 [Chris Palmer <palmer@google.com> and Ben Laurie]
997 *) New function ASN1_TIME_diff to calculate the difference between two
998 ASN1_TIME structures or one structure and the current time.
1001 *) Update fips_test_suite to support multiple command line options. New
1002 test to induce all self test errors in sequence and check expected
1006 *) Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and
1007 sign or verify all in one operation.
1010 *) Add fips_algvs: a multicall fips utility incorporating all the algorithm
1011 test programs and fips_test_suite. Includes functionality to parse
1012 the minimal script output of fipsalgest.pl directly.
1015 *) Add authorisation parameter to FIPS_module_mode_set().
1018 *) Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves.
1021 *) Use separate DRBG fields for internal and external flags. New function
1022 FIPS_drbg_health_check() to perform on demand health checking. Add
1023 generation tests to fips_test_suite with reduced health check interval to
1024 demonstrate periodic health checking. Add "nodh" option to
1025 fips_test_suite to skip very slow DH test.
1028 *) New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers
1032 *) More extensive health check for DRBG checking many more failure modes.
1033 New function FIPS_selftest_drbg_all() to handle every possible DRBG
1034 combination: call this in fips_test_suite.
1037 *) Add support for canonical generation of DSA parameter 'g'. See
1040 *) Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
1041 POST to handle HMAC cases.
1044 *) Add functions FIPS_module_version() and FIPS_module_version_text()
1045 to return numerical and string versions of the FIPS module number.
1048 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
1049 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implemented
1050 outside the validated module in the FIPS capable OpenSSL.
1053 *) Minor change to DRBG entropy callback semantics. In some cases
1054 there is no multiple of the block length between min_len and
1055 max_len. Allow the callback to return more than max_len bytes
1056 of entropy but discard any extra: it is the callback's responsibility
1057 to ensure that the extra data discarded does not impact the
1058 requested amount of entropy.
1061 *) Add PRNG security strength checks to RSA, DSA and ECDSA using
1062 information in FIPS186-3, SP800-57 and SP800-131A.
1065 *) CCM support via EVP. Interface is very similar to GCM case except we
1066 must supply all data in one chunk (i.e. no update, final) and the
1067 message length must be supplied if AAD is used. Add algorithm test
1071 *) Initial version of POST overhaul. Add POST callback to allow the status
1072 of POST to be monitored and/or failures induced. Modify fips_test_suite
1073 to use callback. Always run all selftests even if one fails.
1076 *) XTS support including algorithm test driver in the fips_gcmtest program.
1077 Note: this does increase the maximum key length from 32 to 64 bytes but
1078 there should be no binary compatibility issues as existing applications
1079 will never use XTS mode.
1082 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
1083 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
1084 performs algorithm blocking for unapproved PRNG types. Also do not
1085 set PRNG type in FIPS_mode_set(): leave this to the application.
1086 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
1087 the standard OpenSSL PRNG: set additional data to a date time vector.
1090 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
1091 This shouldn't present any incompatibility problems because applications
1092 shouldn't be using these directly and any that are will need to rethink
1093 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
1096 *) Extensive self tests and health checking required by SP800-90 DRBG.
1097 Remove strength parameter from FIPS_drbg_instantiate and always
1098 instantiate at maximum supported strength.
1101 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
1104 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
1107 *) New function DH_compute_key_padded() to compute a DH key and pad with
1108 leading zeroes if needed: this complies with SP800-56A et al.
1111 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
1112 anything, incomplete, subject to change and largely untested at present.
1115 *) Modify fipscanisteronly build option to only build the necessary object
1116 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
1119 *) Add experimental option FIPSSYMS to give all symbols in
1120 fipscanister.o and FIPS or fips prefix. This will avoid
1121 conflicts with future versions of OpenSSL. Add perl script
1122 util/fipsas.pl to preprocess assembly language source files
1123 and rename any affected symbols.
1126 *) Add selftest checks and algorithm block of non-fips algorithms in
1127 FIPS mode. Remove DES2 from selftests.
1130 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
1131 return internal method without any ENGINE dependencies. Add new
1132 tiny fips sign and verify functions.
1135 *) New build option no-ec2m to disable characteristic 2 code.
1138 *) New build option "fipscanisteronly". This only builds fipscanister.o
1139 and (currently) associated fips utilities. Uses the file Makefile.fips
1140 instead of Makefile.org as the prototype.
1143 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
1144 Update fips_gcmtest to use IV generator.
1147 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
1148 setting output buffer to NULL. The *Final function must be
1149 called although it will not retrieve any additional data. The tag
1150 can be set or retrieved with a ctrl. The IV length is by default 12
1151 bytes (96 bits) but can be set to an alternative value. If the IV
1152 length exceeds the maximum IV length (currently 16 bytes) it cannot be
1156 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
1157 underlying do_cipher function handles all cipher semantics itself
1158 including padding and finalisation. This is useful if (for example)
1159 an ENGINE cipher handles block padding itself. The behaviour of
1160 do_cipher is subtly changed if this flag is set: the return value
1161 is the number of characters written to the output buffer (zero is
1162 no longer an error code) or a negative error code. Also if the
1163 input buffer is NULL and length 0 finalisation should be performed.
1166 *) If a candidate issuer certificate is already part of the constructed
1167 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
1170 *) Improve forward-security support: add functions
1172 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
1173 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
1175 for use by SSL/TLS servers; the callback function will be called whenever a
1176 new session is created, and gets to decide whether the session may be
1177 cached to make it resumable (return 0) or not (return 1). (As by the
1178 SSL/TLS protocol specifications, the session_id sent by the server will be
1179 empty to indicate that the session is not resumable; also, the server will
1180 not generate RFC 4507 (RFC 5077) session tickets.)
1182 A simple reasonable callback implementation is to return is_forward_secure.
1183 This parameter will be set to 1 or 0 depending on the ciphersuite selected
1184 by the SSL/TLS server library, indicating whether it can provide forward
1186 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
1188 *) New -verify_name option in command line utilities to set verification
1192 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
1193 Add CMAC pkey methods.
1196 *) Experimental renegotiation in s_server -www mode. If the client
1197 browses /reneg connection is renegotiated. If /renegcert it is
1198 renegotiated requesting a certificate.
1201 *) Add an "external" session cache for debugging purposes to s_server. This
1202 should help trace issues which normally are only apparent in deployed
1203 multi-process servers.
1206 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
1207 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
1208 BIO_set_cipher() and some obscure PEM functions were changed so they
1209 can now return an error. The RAND changes required a change to the
1210 RAND_METHOD structure.
1213 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
1214 a gcc attribute to warn if the result of a function is ignored. This
1215 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
1216 whose return value is often ignored.
1219 *) New -noct, -requestct, -requirect and -ctlogfile options for s_client.
1220 These allow SCTs (signed certificate timestamps) to be requested and
1221 validated when establishing a connection.
1222 [Rob Percival <robpercival@google.com>]
1224 Changes between 1.0.2g and 1.0.2h [3 May 2016]
1226 *) Prevent padding oracle in AES-NI CBC MAC check
1228 A MITM attacker can use a padding oracle attack to decrypt traffic
1229 when the connection uses an AES CBC cipher and the server support
1232 This issue was introduced as part of the fix for Lucky 13 padding
1233 attack (CVE-2013-0169). The padding check was rewritten to be in
1234 constant time by making sure that always the same bytes are read and
1235 compared against either the MAC or padding bytes. But it no longer
1236 checked that there was enough data to have both the MAC and padding
1239 This issue was reported by Juraj Somorovsky using TLS-Attacker.
1243 *) Fix EVP_EncodeUpdate overflow
1245 An overflow can occur in the EVP_EncodeUpdate() function which is used for
1246 Base64 encoding of binary data. If an attacker is able to supply very large
1247 amounts of input data then a length check can overflow resulting in a heap
1250 Internally to OpenSSL the EVP_EncodeUpdate() function is primarily used by
1251 the PEM_write_bio* family of functions. These are mainly used within the
1252 OpenSSL command line applications, so any application which processes data
1253 from an untrusted source and outputs it as a PEM file should be considered
1254 vulnerable to this issue. User applications that call these APIs directly
1255 with large amounts of untrusted data may also be vulnerable.
1257 This issue was reported by Guido Vranken.
1261 *) Fix EVP_EncryptUpdate overflow
1263 An overflow can occur in the EVP_EncryptUpdate() function. If an attacker
1264 is able to supply very large amounts of input data after a previous call to
1265 EVP_EncryptUpdate() with a partial block then a length check can overflow
1266 resulting in a heap corruption. Following an analysis of all OpenSSL
1267 internal usage of the EVP_EncryptUpdate() function all usage is one of two
1268 forms. The first form is where the EVP_EncryptUpdate() call is known to be
1269 the first called function after an EVP_EncryptInit(), and therefore that
1270 specific call must be safe. The second form is where the length passed to
1271 EVP_EncryptUpdate() can be seen from the code to be some small value and
1272 therefore there is no possibility of an overflow. Since all instances are
1273 one of these two forms, it is believed that there can be no overflows in
1274 internal code due to this problem. It should be noted that
1275 EVP_DecryptUpdate() can call EVP_EncryptUpdate() in certain code paths.
1276 Also EVP_CipherUpdate() is a synonym for EVP_EncryptUpdate(). All instances
1277 of these calls have also been analysed too and it is believed there are no
1278 instances in internal usage where an overflow could occur.
1280 This issue was reported by Guido Vranken.
1284 *) Prevent ASN.1 BIO excessive memory allocation
1286 When ASN.1 data is read from a BIO using functions such as d2i_CMS_bio()
1287 a short invalid encoding can cause allocation of large amounts of memory
1288 potentially consuming excessive resources or exhausting memory.
1290 Any application parsing untrusted data through d2i BIO functions is
1291 affected. The memory based functions such as d2i_X509() are *not* affected.
1292 Since the memory based functions are used by the TLS library, TLS
1293 applications are not affected.
1295 This issue was reported by Brian Carpenter.
1301 ASN1 Strings that are over 1024 bytes can cause an overread in applications
1302 using the X509_NAME_oneline() function on EBCDIC systems. This could result
1303 in arbitrary stack data being returned in the buffer.
1305 This issue was reported by Guido Vranken.
1309 *) Modify behavior of ALPN to invoke callback after SNI/servername
1310 callback, such that updates to the SSL_CTX affect ALPN.
1313 *) Remove LOW from the DEFAULT cipher list. This removes singles DES from the
1317 *) Only remove the SSLv2 methods with the no-ssl2-method option. When the
1318 methods are enabled and ssl2 is disabled the methods return NULL.
1321 Changes between 1.0.2f and 1.0.2g [1 Mar 2016]
1323 * Disable weak ciphers in SSLv3 and up in default builds of OpenSSL.
1324 Builds that are not configured with "enable-weak-ssl-ciphers" will not
1325 provide any "EXPORT" or "LOW" strength ciphers.
1328 * Disable SSLv2 default build, default negotiation and weak ciphers. SSLv2
1329 is by default disabled at build-time. Builds that are not configured with
1330 "enable-ssl2" will not support SSLv2. Even if "enable-ssl2" is used,
1331 users who want to negotiate SSLv2 via the version-flexible SSLv23_method()
1332 will need to explicitly call either of:
1334 SSL_CTX_clear_options(ctx, SSL_OP_NO_SSLv2);
1336 SSL_clear_options(ssl, SSL_OP_NO_SSLv2);
1338 as appropriate. Even if either of those is used, or the application
1339 explicitly uses the version-specific SSLv2_method() or its client and
1340 server variants, SSLv2 ciphers vulnerable to exhaustive search key
1341 recovery have been removed. Specifically, the SSLv2 40-bit EXPORT
1342 ciphers, and SSLv2 56-bit DES are no longer available.
1346 *) Fix a double-free in DSA code
1348 A double free bug was discovered when OpenSSL parses malformed DSA private
1349 keys and could lead to a DoS attack or memory corruption for applications
1350 that receive DSA private keys from untrusted sources. This scenario is
1353 This issue was reported to OpenSSL by Adam Langley(Google/BoringSSL) using
1358 *) Disable SRP fake user seed to address a server memory leak.
1360 Add a new method SRP_VBASE_get1_by_user that handles the seed properly.
1362 SRP_VBASE_get_by_user had inconsistent memory management behaviour.
1363 In order to fix an unavoidable memory leak, SRP_VBASE_get_by_user
1364 was changed to ignore the "fake user" SRP seed, even if the seed
1367 Users should use SRP_VBASE_get1_by_user instead. Note that in
1368 SRP_VBASE_get1_by_user, caller must free the returned value. Note
1369 also that even though configuring the SRP seed attempts to hide
1370 invalid usernames by continuing the handshake with fake
1371 credentials, this behaviour is not constant time and no strong
1372 guarantees are made that the handshake is indistinguishable from
1373 that of a valid user.
1377 *) Fix BN_hex2bn/BN_dec2bn NULL pointer deref/heap corruption
1379 In the BN_hex2bn function the number of hex digits is calculated using an
1380 int value |i|. Later |bn_expand| is called with a value of |i * 4|. For
1381 large values of |i| this can result in |bn_expand| not allocating any
1382 memory because |i * 4| is negative. This can leave the internal BIGNUM data
1383 field as NULL leading to a subsequent NULL ptr deref. For very large values
1384 of |i|, the calculation |i * 4| could be a positive value smaller than |i|.
1385 In this case memory is allocated to the internal BIGNUM data field, but it
1386 is insufficiently sized leading to heap corruption. A similar issue exists
1387 in BN_dec2bn. This could have security consequences if BN_hex2bn/BN_dec2bn
1388 is ever called by user applications with very large untrusted hex/dec data.
1389 This is anticipated to be a rare occurrence.
1391 All OpenSSL internal usage of these functions use data that is not expected
1392 to be untrusted, e.g. config file data or application command line
1393 arguments. If user developed applications generate config file data based
1394 on untrusted data then it is possible that this could also lead to security
1395 consequences. This is also anticipated to be rare.
1397 This issue was reported to OpenSSL by Guido Vranken.
1401 *) Fix memory issues in BIO_*printf functions
1403 The internal |fmtstr| function used in processing a "%s" format string in
1404 the BIO_*printf functions could overflow while calculating the length of a
1405 string and cause an OOB read when printing very long strings.
1407 Additionally the internal |doapr_outch| function can attempt to write to an
1408 OOB memory location (at an offset from the NULL pointer) in the event of a
1409 memory allocation failure. In 1.0.2 and below this could be caused where
1410 the size of a buffer to be allocated is greater than INT_MAX. E.g. this
1411 could be in processing a very long "%s" format string. Memory leaks can
1414 The first issue may mask the second issue dependent on compiler behaviour.
1415 These problems could enable attacks where large amounts of untrusted data
1416 is passed to the BIO_*printf functions. If applications use these functions
1417 in this way then they could be vulnerable. OpenSSL itself uses these
1418 functions when printing out human-readable dumps of ASN.1 data. Therefore
1419 applications that print this data could be vulnerable if the data is from
1420 untrusted sources. OpenSSL command line applications could also be
1421 vulnerable where they print out ASN.1 data, or if untrusted data is passed
1422 as command line arguments.
1424 Libssl is not considered directly vulnerable. Additionally certificates etc
1425 received via remote connections via libssl are also unlikely to be able to
1426 trigger these issues because of message size limits enforced within libssl.
1428 This issue was reported to OpenSSL Guido Vranken.
1432 *) Side channel attack on modular exponentiation
1434 A side-channel attack was found which makes use of cache-bank conflicts on
1435 the Intel Sandy-Bridge microarchitecture which could lead to the recovery
1436 of RSA keys. The ability to exploit this issue is limited as it relies on
1437 an attacker who has control of code in a thread running on the same
1438 hyper-threaded core as the victim thread which is performing decryptions.
1440 This issue was reported to OpenSSL by Yuval Yarom, The University of
1441 Adelaide and NICTA, Daniel Genkin, Technion and Tel Aviv University, and
1442 Nadia Heninger, University of Pennsylvania with more information at
1443 http://cachebleed.info.
1447 *) Change the req app to generate a 2048-bit RSA/DSA key by default,
1448 if no keysize is specified with default_bits. This fixes an
1449 omission in an earlier change that changed all RSA/DSA key generation
1450 apps to use 2048 bits by default.
1453 Changes between 1.0.2e and 1.0.2f [28 Jan 2016]
1454 *) DH small subgroups
1456 Historically OpenSSL only ever generated DH parameters based on "safe"
1457 primes. More recently (in version 1.0.2) support was provided for
1458 generating X9.42 style parameter files such as those required for RFC 5114
1459 support. The primes used in such files may not be "safe". Where an
1460 application is using DH configured with parameters based on primes that are
1461 not "safe" then an attacker could use this fact to find a peer's private
1462 DH exponent. This attack requires that the attacker complete multiple
1463 handshakes in which the peer uses the same private DH exponent. For example
1464 this could be used to discover a TLS server's private DH exponent if it's
1465 reusing the private DH exponent or it's using a static DH ciphersuite.
1467 OpenSSL provides the option SSL_OP_SINGLE_DH_USE for ephemeral DH (DHE) in
1468 TLS. It is not on by default. If the option is not set then the server
1469 reuses the same private DH exponent for the life of the server process and
1470 would be vulnerable to this attack. It is believed that many popular
1471 applications do set this option and would therefore not be at risk.
1473 The fix for this issue adds an additional check where a "q" parameter is
1474 available (as is the case in X9.42 based parameters). This detects the
1475 only known attack, and is the only possible defense for static DH
1476 ciphersuites. This could have some performance impact.
1478 Additionally the SSL_OP_SINGLE_DH_USE option has been switched on by
1479 default and cannot be disabled. This could have some performance impact.
1481 This issue was reported to OpenSSL by Antonio Sanso (Adobe).
1485 *) SSLv2 doesn't block disabled ciphers
1487 A malicious client can negotiate SSLv2 ciphers that have been disabled on
1488 the server and complete SSLv2 handshakes even if all SSLv2 ciphers have
1489 been disabled, provided that the SSLv2 protocol was not also disabled via
1492 This issue was reported to OpenSSL on 26th December 2015 by Nimrod Aviram
1493 and Sebastian Schinzel.
1497 Changes between 1.0.2d and 1.0.2e [3 Dec 2015]
1499 *) BN_mod_exp may produce incorrect results on x86_64
1501 There is a carry propagating bug in the x86_64 Montgomery squaring
1502 procedure. No EC algorithms are affected. Analysis suggests that attacks
1503 against RSA and DSA as a result of this defect would be very difficult to
1504 perform and are not believed likely. Attacks against DH are considered just
1505 feasible (although very difficult) because most of the work necessary to
1506 deduce information about a private key may be performed offline. The amount
1507 of resources required for such an attack would be very significant and
1508 likely only accessible to a limited number of attackers. An attacker would
1509 additionally need online access to an unpatched system using the target
1510 private key in a scenario with persistent DH parameters and a private
1511 key that is shared between multiple clients. For example this can occur by
1512 default in OpenSSL DHE based SSL/TLS ciphersuites.
1514 This issue was reported to OpenSSL by Hanno Böck.
1518 *) Certificate verify crash with missing PSS parameter
1520 The signature verification routines will crash with a NULL pointer
1521 dereference if presented with an ASN.1 signature using the RSA PSS
1522 algorithm and absent mask generation function parameter. Since these
1523 routines are used to verify certificate signature algorithms this can be
1524 used to crash any certificate verification operation and exploited in a
1525 DoS attack. Any application which performs certificate verification is
1526 vulnerable including OpenSSL clients and servers which enable client
1529 This issue was reported to OpenSSL by Loïc Jonas Etienne (Qnective AG).
1533 *) X509_ATTRIBUTE memory leak
1535 When presented with a malformed X509_ATTRIBUTE structure OpenSSL will leak
1536 memory. This structure is used by the PKCS#7 and CMS routines so any
1537 application which reads PKCS#7 or CMS data from untrusted sources is
1538 affected. SSL/TLS is not affected.
1540 This issue was reported to OpenSSL by Adam Langley (Google/BoringSSL) using
1545 *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
1546 This changes the decoding behaviour for some invalid messages,
1547 though the change is mostly in the more lenient direction, and
1548 legacy behaviour is preserved as much as possible.
1551 *) In DSA_generate_parameters_ex, if the provided seed is too short,
1553 [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>]
1555 Changes between 1.0.2c and 1.0.2d [9 Jul 2015]
1557 *) Alternate chains certificate forgery
1559 During certificate verification, OpenSSL will attempt to find an
1560 alternative certificate chain if the first attempt to build such a chain
1561 fails. An error in the implementation of this logic can mean that an
1562 attacker could cause certain checks on untrusted certificates to be
1563 bypassed, such as the CA flag, enabling them to use a valid leaf
1564 certificate to act as a CA and "issue" an invalid certificate.
1566 This issue was reported to OpenSSL by Adam Langley/David Benjamin
1570 Changes between 1.0.2b and 1.0.2c [12 Jun 2015]
1572 *) Fix HMAC ABI incompatibility. The previous version introduced an ABI
1573 incompatibility in the handling of HMAC. The previous ABI has now been
1577 Changes between 1.0.2a and 1.0.2b [11 Jun 2015]
1579 *) Malformed ECParameters causes infinite loop
1581 When processing an ECParameters structure OpenSSL enters an infinite loop
1582 if the curve specified is over a specially malformed binary polynomial
1585 This can be used to perform denial of service against any
1586 system which processes public keys, certificate requests or
1587 certificates. This includes TLS clients and TLS servers with
1588 client authentication enabled.
1590 This issue was reported to OpenSSL by Joseph Barr-Pixton.
1594 *) Exploitable out-of-bounds read in X509_cmp_time
1596 X509_cmp_time does not properly check the length of the ASN1_TIME
1597 string and can read a few bytes out of bounds. In addition,
1598 X509_cmp_time accepts an arbitrary number of fractional seconds in the
1601 An attacker can use this to craft malformed certificates and CRLs of
1602 various sizes and potentially cause a segmentation fault, resulting in
1603 a DoS on applications that verify certificates or CRLs. TLS clients
1604 that verify CRLs are affected. TLS clients and servers with client
1605 authentication enabled may be affected if they use custom verification
1608 This issue was reported to OpenSSL by Robert Swiecki (Google), and
1609 independently by Hanno Böck.
1613 *) PKCS7 crash with missing EnvelopedContent
1615 The PKCS#7 parsing code does not handle missing inner EncryptedContent
1616 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs
1617 with missing content and trigger a NULL pointer dereference on parsing.
1619 Applications that decrypt PKCS#7 data or otherwise parse PKCS#7
1620 structures from untrusted sources are affected. OpenSSL clients and
1621 servers are not affected.
1623 This issue was reported to OpenSSL by Michal Zalewski (Google).
1627 *) CMS verify infinite loop with unknown hash function
1629 When verifying a signedData message the CMS code can enter an infinite loop
1630 if presented with an unknown hash function OID. This can be used to perform
1631 denial of service against any system which verifies signedData messages using
1633 This issue was reported to OpenSSL by Johannes Bauer.
1637 *) Race condition handling NewSessionTicket
1639 If a NewSessionTicket is received by a multi-threaded client when attempting to
1640 reuse a previous ticket then a race condition can occur potentially leading to
1641 a double free of the ticket data.
1645 *) Only support 256-bit or stronger elliptic curves with the
1646 'ecdh_auto' setting (server) or by default (client). Of supported
1647 curves, prefer P-256 (both).
1650 Changes between 1.0.2 and 1.0.2a [19 Mar 2015]
1652 *) ClientHello sigalgs DoS fix
1654 If a client connects to an OpenSSL 1.0.2 server and renegotiates with an
1655 invalid signature algorithms extension a NULL pointer dereference will
1656 occur. This can be exploited in a DoS attack against the server.
1658 This issue was was reported to OpenSSL by David Ramos of Stanford
1661 [Stephen Henson and Matt Caswell]
1663 *) Multiblock corrupted pointer fix
1665 OpenSSL 1.0.2 introduced the "multiblock" performance improvement. This
1666 feature only applies on 64 bit x86 architecture platforms that support AES
1667 NI instructions. A defect in the implementation of "multiblock" can cause
1668 OpenSSL's internal write buffer to become incorrectly set to NULL when
1669 using non-blocking IO. Typically, when the user application is using a
1670 socket BIO for writing, this will only result in a failed connection.
1671 However if some other BIO is used then it is likely that a segmentation
1672 fault will be triggered, thus enabling a potential DoS attack.
1674 This issue was reported to OpenSSL by Daniel Danner and Rainer Mueller.
1678 *) Segmentation fault in DTLSv1_listen fix
1680 The DTLSv1_listen function is intended to be stateless and processes the
1681 initial ClientHello from many peers. It is common for user code to loop
1682 over the call to DTLSv1_listen until a valid ClientHello is received with
1683 an associated cookie. A defect in the implementation of DTLSv1_listen means
1684 that state is preserved in the SSL object from one invocation to the next
1685 that can lead to a segmentation fault. Errors processing the initial
1686 ClientHello can trigger this scenario. An example of such an error could be
1687 that a DTLS1.0 only client is attempting to connect to a DTLS1.2 only
1690 This issue was reported to OpenSSL by Per Allansson.
1694 *) Segmentation fault in ASN1_TYPE_cmp fix
1696 The function ASN1_TYPE_cmp will crash with an invalid read if an attempt is
1697 made to compare ASN.1 boolean types. Since ASN1_TYPE_cmp is used to check
1698 certificate signature algorithm consistency this can be used to crash any
1699 certificate verification operation and exploited in a DoS attack. Any
1700 application which performs certificate verification is vulnerable including
1701 OpenSSL clients and servers which enable client authentication.
1705 *) Segmentation fault for invalid PSS parameters fix
1707 The signature verification routines will crash with a NULL pointer
1708 dereference if presented with an ASN.1 signature using the RSA PSS
1709 algorithm and invalid parameters. Since these routines are used to verify
1710 certificate signature algorithms this can be used to crash any
1711 certificate verification operation and exploited in a DoS attack. Any
1712 application which performs certificate verification is vulnerable including
1713 OpenSSL clients and servers which enable client authentication.
1715 This issue was was reported to OpenSSL by Brian Carpenter.
1719 *) ASN.1 structure reuse memory corruption fix
1721 Reusing a structure in ASN.1 parsing may allow an attacker to cause
1722 memory corruption via an invalid write. Such reuse is and has been
1723 strongly discouraged and is believed to be rare.
1725 Applications that parse structures containing CHOICE or ANY DEFINED BY
1726 components may be affected. Certificate parsing (d2i_X509 and related
1727 functions) are however not affected. OpenSSL clients and servers are
1732 *) PKCS7 NULL pointer dereferences fix
1734 The PKCS#7 parsing code does not handle missing outer ContentInfo
1735 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs with
1736 missing content and trigger a NULL pointer dereference on parsing.
1738 Applications that verify PKCS#7 signatures, decrypt PKCS#7 data or
1739 otherwise parse PKCS#7 structures from untrusted sources are
1740 affected. OpenSSL clients and servers are not affected.
1742 This issue was reported to OpenSSL by Michal Zalewski (Google).
1746 *) DoS via reachable assert in SSLv2 servers fix
1748 A malicious client can trigger an OPENSSL_assert (i.e., an abort) in
1749 servers that both support SSLv2 and enable export cipher suites by sending
1750 a specially crafted SSLv2 CLIENT-MASTER-KEY message.
1752 This issue was discovered by Sean Burford (Google) and Emilia Käsper
1753 (OpenSSL development team).
1757 *) Empty CKE with client auth and DHE fix
1759 If client auth is used then a server can seg fault in the event of a DHE
1760 ciphersuite being selected and a zero length ClientKeyExchange message
1761 being sent by the client. This could be exploited in a DoS attack.
1765 *) Handshake with unseeded PRNG fix
1767 Under certain conditions an OpenSSL 1.0.2 client can complete a handshake
1768 with an unseeded PRNG. The conditions are:
1769 - The client is on a platform where the PRNG has not been seeded
1770 automatically, and the user has not seeded manually
1771 - A protocol specific client method version has been used (i.e. not
1772 SSL_client_methodv23)
1773 - A ciphersuite is used that does not require additional random data from
1774 the PRNG beyond the initial ClientHello client random (e.g. PSK-RC4-SHA).
1776 If the handshake succeeds then the client random that has been used will
1777 have been generated from a PRNG with insufficient entropy and therefore the
1778 output may be predictable.
1780 For example using the following command with an unseeded openssl will
1781 succeed on an unpatched platform:
1783 openssl s_client -psk 1a2b3c4d -tls1_2 -cipher PSK-RC4-SHA
1787 *) Use After Free following d2i_ECPrivatekey error fix
1789 A malformed EC private key file consumed via the d2i_ECPrivateKey function
1790 could cause a use after free condition. This, in turn, could cause a double
1791 free in several private key parsing functions (such as d2i_PrivateKey
1792 or EVP_PKCS82PKEY) and could lead to a DoS attack or memory corruption
1793 for applications that receive EC private keys from untrusted
1794 sources. This scenario is considered rare.
1796 This issue was discovered by the BoringSSL project and fixed in their
1801 *) X509_to_X509_REQ NULL pointer deref fix
1803 The function X509_to_X509_REQ will crash with a NULL pointer dereference if
1804 the certificate key is invalid. This function is rarely used in practice.
1806 This issue was discovered by Brian Carpenter.
1810 *) Removed the export ciphers from the DEFAULT ciphers
1813 Changes between 1.0.1l and 1.0.2 [22 Jan 2015]
1815 *) Facilitate "universal" ARM builds targeting range of ARM ISAs, e.g.
1816 ARMv5 through ARMv8, as opposite to "locking" it to single one.
1817 So far those who have to target multiple platforms would compromise
1818 and argue that binary targeting say ARMv5 would still execute on
1819 ARMv8. "Universal" build resolves this compromise by providing
1820 near-optimal performance even on newer platforms.
1823 *) Accelerated NIST P-256 elliptic curve implementation for x86_64
1824 (other platforms pending).
1825 [Shay Gueron & Vlad Krasnov (Intel Corp), Andy Polyakov]
1827 *) Add support for the SignedCertificateTimestampList certificate and
1828 OCSP response extensions from RFC6962.
1831 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
1832 for corner cases. (Certain input points at infinity could lead to
1833 bogus results, with non-infinity inputs mapped to infinity too.)
1836 *) Initial support for PowerISA 2.0.7, first implemented in POWER8.
1837 This covers AES, SHA256/512 and GHASH. "Initial" means that most
1838 common cases are optimized and there still is room for further
1839 improvements. Vector Permutation AES for Altivec is also added.
1842 *) Add support for little-endian ppc64 Linux target.
1843 [Marcelo Cerri (IBM)]
1845 *) Initial support for AMRv8 ISA crypto extensions. This covers AES,
1846 SHA1, SHA256 and GHASH. "Initial" means that most common cases
1847 are optimized and there still is room for further improvements.
1848 Both 32- and 64-bit modes are supported.
1849 [Andy Polyakov, Ard Biesheuvel (Linaro)]
1851 *) Improved ARMv7 NEON support.
1854 *) Support for SPARC Architecture 2011 crypto extensions, first
1855 implemented in SPARC T4. This covers AES, DES, Camellia, SHA1,
1856 SHA256/512, MD5, GHASH and modular exponentiation.
1857 [Andy Polyakov, David Miller]
1859 *) Accelerated modular exponentiation for Intel processors, a.k.a.
1861 [Shay Gueron & Vlad Krasnov (Intel Corp)]
1863 *) Support for new and upcoming Intel processors, including AVX2,
1864 BMI and SHA ISA extensions. This includes additional "stitched"
1865 implementations, AESNI-SHA256 and GCM, and multi-buffer support
1868 This work was sponsored by Intel Corp.
1871 *) Support for DTLS 1.2. This adds two sets of DTLS methods: DTLS_*_method()
1872 supports both DTLS 1.2 and 1.0 and should use whatever version the peer
1873 supports and DTLSv1_2_*_method() which supports DTLS 1.2 only.
1876 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
1877 this fixes a limitation in previous versions of OpenSSL.
1880 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
1881 MGF1 digest and OAEP label.
1884 *) Add EVP support for key wrapping algorithms, to avoid problems with
1885 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
1886 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
1887 algorithms and include tests cases.
1890 *) Add functions to allocate and set the fields of an ECDSA_METHOD
1892 [Douglas E. Engert, Steve Henson]
1894 *) New functions OPENSSL_gmtime_diff and ASN1_TIME_diff to find the
1895 difference in days and seconds between two tm or ASN1_TIME structures.
1898 *) Add -rev test option to s_server to just reverse order of characters
1899 received by client and send back to server. Also prints an abbreviated
1900 summary of the connection parameters.
1903 *) New option -brief for s_client and s_server to print out a brief summary
1904 of connection parameters.
1907 *) Add callbacks for arbitrary TLS extensions.
1908 [Trevor Perrin <trevp@trevp.net> and Ben Laurie]
1910 *) New option -crl_download in several openssl utilities to download CRLs
1911 from CRLDP extension in certificates.
1914 *) New options -CRL and -CRLform for s_client and s_server for CRLs.
1917 *) New function X509_CRL_diff to generate a delta CRL from the difference
1918 of two full CRLs. Add support to "crl" utility.
1921 *) New functions to set lookup_crls function and to retrieve
1922 X509_STORE from X509_STORE_CTX.
1925 *) Print out deprecated issuer and subject unique ID fields in
1929 *) Extend OCSP I/O functions so they can be used for simple general purpose
1930 HTTP as well as OCSP. New wrapper function which can be used to download
1931 CRLs using the OCSP API.
1934 *) Delegate command line handling in s_client/s_server to SSL_CONF APIs.
1937 *) SSL_CONF* functions. These provide a common framework for application
1938 configuration using configuration files or command lines.
1941 *) SSL/TLS tracing code. This parses out SSL/TLS records using the
1942 message callback and prints the results. Needs compile time option
1943 "enable-ssl-trace". New options to s_client and s_server to enable
1947 *) New ctrl and macro to retrieve supported points extensions.
1948 Print out extension in s_server and s_client.
1951 *) New functions to retrieve certificate signature and signature
1955 *) Add functions to retrieve and manipulate the raw cipherlist sent by a
1959 *) New Suite B modes for TLS code. These use and enforce the requirements
1960 of RFC6460: restrict ciphersuites, only permit Suite B algorithms and
1961 only use Suite B curves. The Suite B modes can be set by using the
1962 strings "SUITEB128", "SUITEB192" or "SUITEB128ONLY" for the cipherstring.
1965 *) New chain verification flags for Suite B levels of security. Check
1966 algorithms are acceptable when flags are set in X509_verify_cert.
1969 *) Make tls1_check_chain return a set of flags indicating checks passed
1970 by a certificate chain. Add additional tests to handle client
1971 certificates: checks for matching certificate type and issuer name
1975 *) If an attempt is made to use a signature algorithm not in the peer
1976 preference list abort the handshake. If client has no suitable
1977 signature algorithms in response to a certificate request do not
1978 use the certificate.
1981 *) If server EC tmp key is not in client preference list abort handshake.
1984 *) Add support for certificate stores in CERT structure. This makes it
1985 possible to have different stores per SSL structure or one store in
1986 the parent SSL_CTX. Include distinct stores for certificate chain
1987 verification and chain building. New ctrl SSL_CTRL_BUILD_CERT_CHAIN
1988 to build and store a certificate chain in CERT structure: returning
1989 an error if the chain cannot be built: this will allow applications
1990 to test if a chain is correctly configured.
1992 Note: if the CERT based stores are not set then the parent SSL_CTX
1993 store is used to retain compatibility with existing behaviour.
1997 *) New function ssl_set_client_disabled to set a ciphersuite disabled
1998 mask based on the current session, check mask when sending client
1999 hello and checking the requested ciphersuite.
2002 *) New ctrls to retrieve and set certificate types in a certificate
2003 request message. Print out received values in s_client. If certificate
2004 types is not set with custom values set sensible values based on
2005 supported signature algorithms.
2008 *) Support for distinct client and server supported signature algorithms.
2011 *) Add certificate callback. If set this is called whenever a certificate
2012 is required by client or server. An application can decide which
2013 certificate chain to present based on arbitrary criteria: for example
2014 supported signature algorithms. Add very simple example to s_server.
2015 This fixes many of the problems and restrictions of the existing client
2016 certificate callback: for example you can now clear an existing
2017 certificate and specify the whole chain.
2020 *) Add new "valid_flags" field to CERT_PKEY structure which determines what
2021 the certificate can be used for (if anything). Set valid_flags field
2022 in new tls1_check_chain function. Simplify ssl_set_cert_masks which used
2023 to have similar checks in it.
2025 Add new "cert_flags" field to CERT structure and include a "strict mode".
2026 This enforces some TLS certificate requirements (such as only permitting
2027 certificate signature algorithms contained in the supported algorithms
2028 extension) which some implementations ignore: this option should be used
2029 with caution as it could cause interoperability issues.
2032 *) Update and tidy signature algorithm extension processing. Work out
2033 shared signature algorithms based on preferences and peer algorithms
2034 and print them out in s_client and s_server. Abort handshake if no
2035 shared signature algorithms.
2038 *) Add new functions to allow customised supported signature algorithms
2039 for SSL and SSL_CTX structures. Add options to s_client and s_server
2043 *) New function SSL_certs_clear() to delete all references to certificates
2044 from an SSL structure. Before this once a certificate had been added
2045 it couldn't be removed.
2048 *) Integrate hostname, email address and IP address checking with certificate
2049 verification. New verify options supporting checking in openssl utility.
2052 *) Fixes and wildcard matching support to hostname and email checking
2053 functions. Add manual page.
2054 [Florian Weimer (Red Hat Product Security Team)]
2056 *) New functions to check a hostname email or IP address against a
2057 certificate. Add options x509 utility to print results of checks against
2061 *) Fix OCSP checking.
2062 [Rob Stradling <rob.stradling@comodo.com> and Ben Laurie]
2064 *) Initial experimental support for explicitly trusted non-root CAs.
2065 OpenSSL still tries to build a complete chain to a root but if an
2066 intermediate CA has a trust setting included that is used. The first
2067 setting is used: whether to trust (e.g., -addtrust option to the x509
2071 *) Add -trusted_first option which attempts to find certificates in the
2072 trusted store even if an untrusted chain is also supplied.
2075 *) MIPS assembly pack updates: support for MIPS32r2 and SmartMIPS ASE,
2076 platform support for Linux and Android.
2079 *) Support for linux-x32, ILP32 environment in x86_64 framework.
2082 *) Experimental multi-implementation support for FIPS capable OpenSSL.
2083 When in FIPS mode the approved implementations are used as normal,
2084 when not in FIPS mode the internal unapproved versions are used instead.
2085 This means that the FIPS capable OpenSSL isn't forced to use the
2086 (often lower performance) FIPS implementations outside FIPS mode.
2089 *) Transparently support X9.42 DH parameters when calling
2090 PEM_read_bio_DHparameters. This means existing applications can handle
2091 the new parameter format automatically.
2094 *) Initial experimental support for X9.42 DH parameter format: mainly
2095 to support use of 'q' parameter for RFC5114 parameters.
2098 *) Add DH parameters from RFC5114 including test data to dhtest.
2101 *) Support for automatic EC temporary key parameter selection. If enabled
2102 the most preferred EC parameters are automatically used instead of
2103 hardcoded fixed parameters. Now a server just has to call:
2104 SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically
2105 support ECDH and use the most appropriate parameters.
2108 *) Enhance and tidy EC curve and point format TLS extension code. Use
2109 static structures instead of allocation if default values are used.
2110 New ctrls to set curves we wish to support and to retrieve shared curves.
2111 Print out shared curves in s_server. New options to s_server and s_client
2112 to set list of supported curves.
2115 *) New ctrls to retrieve supported signature algorithms and
2116 supported curve values as an array of NIDs. Extend openssl utility
2117 to print out received values.
2120 *) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert
2121 between NIDs and the more common NIST names such as "P-256". Enhance
2122 ecparam utility and ECC method to recognise the NIST names for curves.
2125 *) Enhance SSL/TLS certificate chain handling to support different
2126 chains for each certificate instead of one chain in the parent SSL_CTX.
2129 *) Support for fixed DH ciphersuite client authentication: where both
2130 server and client use DH certificates with common parameters.
2133 *) Support for fixed DH ciphersuites: those requiring DH server
2137 *) New function i2d_re_X509_tbs for re-encoding the TBS portion of
2139 Note: Related 1.0.2-beta specific macros X509_get_cert_info,
2140 X509_CINF_set_modified, X509_CINF_get_issuer, X509_CINF_get_extensions and
2141 X509_CINF_get_signature were reverted post internal team review.
2143 Changes between 1.0.1k and 1.0.1l [15 Jan 2015]
2145 *) Build fixes for the Windows and OpenVMS platforms
2146 [Matt Caswell and Richard Levitte]
2148 Changes between 1.0.1j and 1.0.1k [8 Jan 2015]
2150 *) Fix DTLS segmentation fault in dtls1_get_record. A carefully crafted DTLS
2151 message can cause a segmentation fault in OpenSSL due to a NULL pointer
2152 dereference. This could lead to a Denial Of Service attack. Thanks to
2153 Markus Stenberg of Cisco Systems, Inc. for reporting this issue.
2157 *) Fix DTLS memory leak in dtls1_buffer_record. A memory leak can occur in the
2158 dtls1_buffer_record function under certain conditions. In particular this
2159 could occur if an attacker sent repeated DTLS records with the same
2160 sequence number but for the next epoch. The memory leak could be exploited
2161 by an attacker in a Denial of Service attack through memory exhaustion.
2162 Thanks to Chris Mueller for reporting this issue.
2166 *) Fix issue where no-ssl3 configuration sets method to NULL. When openssl is
2167 built with the no-ssl3 option and a SSL v3 ClientHello is received the ssl
2168 method would be set to NULL which could later result in a NULL pointer
2169 dereference. Thanks to Frank Schmirler for reporting this issue.
2173 *) Abort handshake if server key exchange message is omitted for ephemeral
2176 Thanks to Karthikeyan Bhargavan of the PROSECCO team at INRIA for
2177 reporting this issue.
2181 *) Remove non-export ephemeral RSA code on client and server. This code
2182 violated the TLS standard by allowing the use of temporary RSA keys in
2183 non-export ciphersuites and could be used by a server to effectively
2184 downgrade the RSA key length used to a value smaller than the server
2185 certificate. Thanks for Karthikeyan Bhargavan of the PROSECCO team at
2186 INRIA or reporting this issue.
2190 *) Fixed issue where DH client certificates are accepted without verification.
2191 An OpenSSL server will accept a DH certificate for client authentication
2192 without the certificate verify message. This effectively allows a client to
2193 authenticate without the use of a private key. This only affects servers
2194 which trust a client certificate authority which issues certificates
2195 containing DH keys: these are extremely rare and hardly ever encountered.
2196 Thanks for Karthikeyan Bhargavan of the PROSECCO team at INRIA or reporting
2201 *) Ensure that the session ID context of an SSL is updated when its
2202 SSL_CTX is updated via SSL_set_SSL_CTX.
2204 The session ID context is typically set from the parent SSL_CTX,
2205 and can vary with the CTX.
2208 *) Fix various certificate fingerprint issues.
2210 By using non-DER or invalid encodings outside the signed portion of a
2211 certificate the fingerprint can be changed without breaking the signature.
2212 Although no details of the signed portion of the certificate can be changed
2213 this can cause problems with some applications: e.g. those using the
2214 certificate fingerprint for blacklists.
2216 1. Reject signatures with non zero unused bits.
2218 If the BIT STRING containing the signature has non zero unused bits reject
2219 the signature. All current signature algorithms require zero unused bits.
2221 2. Check certificate algorithm consistency.
2223 Check the AlgorithmIdentifier inside TBS matches the one in the
2224 certificate signature. NB: this will result in signature failure
2225 errors for some broken certificates.
2227 Thanks to Konrad Kraszewski from Google for reporting this issue.
2229 3. Check DSA/ECDSA signatures use DER.
2231 Re-encode DSA/ECDSA signatures and compare with the original received
2232 signature. Return an error if there is a mismatch.
2234 This will reject various cases including garbage after signature
2235 (thanks to Antti Karjalainen and Tuomo Untinen from the Codenomicon CROSS
2236 program for discovering this case) and use of BER or invalid ASN.1 INTEGERs
2237 (negative or with leading zeroes).
2239 Further analysis was conducted and fixes were developed by Stephen Henson
2240 of the OpenSSL core team.
2245 *) Correct Bignum squaring. Bignum squaring (BN_sqr) may produce incorrect
2246 results on some platforms, including x86_64. This bug occurs at random
2247 with a very low probability, and is not known to be exploitable in any
2248 way, though its exact impact is difficult to determine. Thanks to Pieter
2249 Wuille (Blockstream) who reported this issue and also suggested an initial
2250 fix. Further analysis was conducted by the OpenSSL development team and
2251 Adam Langley of Google. The final fix was developed by Andy Polyakov of
2252 the OpenSSL core team.
2256 *) Do not resume sessions on the server if the negotiated protocol
2257 version does not match the session's version. Resuming with a different
2258 version, while not strictly forbidden by the RFC, is of questionable
2259 sanity and breaks all known clients.
2260 [David Benjamin, Emilia Käsper]
2262 *) Tighten handling of the ChangeCipherSpec (CCS) message: reject
2263 early CCS messages during renegotiation. (Note that because
2264 renegotiation is encrypted, this early CCS was not exploitable.)
2267 *) Tighten client-side session ticket handling during renegotiation:
2268 ensure that the client only accepts a session ticket if the server sends
2269 the extension anew in the ServerHello. Previously, a TLS client would
2270 reuse the old extension state and thus accept a session ticket if one was
2271 announced in the initial ServerHello.
2273 Similarly, ensure that the client requires a session ticket if one
2274 was advertised in the ServerHello. Previously, a TLS client would
2275 ignore a missing NewSessionTicket message.
2278 Changes between 1.0.1i and 1.0.1j [15 Oct 2014]
2280 *) SRTP Memory Leak.
2282 A flaw in the DTLS SRTP extension parsing code allows an attacker, who
2283 sends a carefully crafted handshake message, to cause OpenSSL to fail
2284 to free up to 64k of memory causing a memory leak. This could be
2285 exploited in a Denial Of Service attack. This issue affects OpenSSL
2286 1.0.1 server implementations for both SSL/TLS and DTLS regardless of
2287 whether SRTP is used or configured. Implementations of OpenSSL that
2288 have been compiled with OPENSSL_NO_SRTP defined are not affected.
2290 The fix was developed by the OpenSSL team.
2294 *) Session Ticket Memory Leak.
2296 When an OpenSSL SSL/TLS/DTLS server receives a session ticket the
2297 integrity of that ticket is first verified. In the event of a session
2298 ticket integrity check failing, OpenSSL will fail to free memory
2299 causing a memory leak. By sending a large number of invalid session
2300 tickets an attacker could exploit this issue in a Denial Of Service
2305 *) Build option no-ssl3 is incomplete.
2307 When OpenSSL is configured with "no-ssl3" as a build option, servers
2308 could accept and complete a SSL 3.0 handshake, and clients could be
2309 configured to send them.
2311 [Akamai and the OpenSSL team]
2313 *) Add support for TLS_FALLBACK_SCSV.
2314 Client applications doing fallback retries should call
2315 SSL_set_mode(s, SSL_MODE_SEND_FALLBACK_SCSV).
2317 [Adam Langley, Bodo Moeller]
2319 *) Add additional DigestInfo checks.
2321 Re-encode DigestInto in DER and check against the original when
2322 verifying RSA signature: this will reject any improperly encoded
2323 DigestInfo structures.
2325 Note: this is a precautionary measure and no attacks are currently known.
2329 Changes between 1.0.1h and 1.0.1i [6 Aug 2014]
2331 *) Fix SRP buffer overrun vulnerability. Invalid parameters passed to the
2332 SRP code can be overrun an internal buffer. Add sanity check that
2333 g, A, B < N to SRP code.
2335 Thanks to Sean Devlin and Watson Ladd of Cryptography Services, NCC
2336 Group for discovering this issue.
2340 *) A flaw in the OpenSSL SSL/TLS server code causes the server to negotiate
2341 TLS 1.0 instead of higher protocol versions when the ClientHello message
2342 is badly fragmented. This allows a man-in-the-middle attacker to force a
2343 downgrade to TLS 1.0 even if both the server and the client support a
2344 higher protocol version, by modifying the client's TLS records.
2346 Thanks to David Benjamin and Adam Langley (Google) for discovering and
2347 researching this issue.
2351 *) OpenSSL DTLS clients enabling anonymous (EC)DH ciphersuites are subject
2352 to a denial of service attack. A malicious server can crash the client
2353 with a null pointer dereference (read) by specifying an anonymous (EC)DH
2354 ciphersuite and sending carefully crafted handshake messages.
2356 Thanks to Felix Gröbert (Google) for discovering and researching this
2361 *) By sending carefully crafted DTLS packets an attacker could cause openssl
2362 to leak memory. This can be exploited through a Denial of Service attack.
2363 Thanks to Adam Langley for discovering and researching this issue.
2367 *) An attacker can force openssl to consume large amounts of memory whilst
2368 processing DTLS handshake messages. This can be exploited through a
2369 Denial of Service attack.
2370 Thanks to Adam Langley for discovering and researching this issue.
2374 *) An attacker can force an error condition which causes openssl to crash
2375 whilst processing DTLS packets due to memory being freed twice. This
2376 can be exploited through a Denial of Service attack.
2377 Thanks to Adam Langley and Wan-Teh Chang for discovering and researching
2382 *) If a multithreaded client connects to a malicious server using a resumed
2383 session and the server sends an ec point format extension it could write
2384 up to 255 bytes to freed memory.
2386 Thanks to Gabor Tyukasz (LogMeIn Inc) for discovering and researching this
2391 *) A malicious server can crash an OpenSSL client with a null pointer
2392 dereference (read) by specifying an SRP ciphersuite even though it was not
2393 properly negotiated with the client. This can be exploited through a
2394 Denial of Service attack.
2396 Thanks to Joonas Kuorilehto and Riku Hietamäki (Codenomicon) for
2397 discovering and researching this issue.
2401 *) A flaw in OBJ_obj2txt may cause pretty printing functions such as
2402 X509_name_oneline, X509_name_print_ex et al. to leak some information
2403 from the stack. Applications may be affected if they echo pretty printing
2404 output to the attacker.
2406 Thanks to Ivan Fratric (Google) for discovering this issue.
2408 [Emilia Käsper, and Steve Henson]
2410 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
2411 for corner cases. (Certain input points at infinity could lead to
2412 bogus results, with non-infinity inputs mapped to infinity too.)
2415 Changes between 1.0.1g and 1.0.1h [5 Jun 2014]
2417 *) Fix for SSL/TLS MITM flaw. An attacker using a carefully crafted
2418 handshake can force the use of weak keying material in OpenSSL
2419 SSL/TLS clients and servers.
2421 Thanks to KIKUCHI Masashi (Lepidum Co. Ltd.) for discovering and
2422 researching this issue. (CVE-2014-0224)
2423 [KIKUCHI Masashi, Steve Henson]
2425 *) Fix DTLS recursion flaw. By sending an invalid DTLS handshake to an
2426 OpenSSL DTLS client the code can be made to recurse eventually crashing
2429 Thanks to Imre Rad (Search-Lab Ltd.) for discovering this issue.
2431 [Imre Rad, Steve Henson]
2433 *) Fix DTLS invalid fragment vulnerability. A buffer overrun attack can
2434 be triggered by sending invalid DTLS fragments to an OpenSSL DTLS
2435 client or server. This is potentially exploitable to run arbitrary
2436 code on a vulnerable client or server.
2438 Thanks to Jüri Aedla for reporting this issue. (CVE-2014-0195)
2439 [Jüri Aedla, Steve Henson]
2441 *) Fix bug in TLS code where clients enable anonymous ECDH ciphersuites
2442 are subject to a denial of service attack.
2444 Thanks to Felix Gröbert and Ivan Fratric at Google for discovering
2445 this issue. (CVE-2014-3470)
2446 [Felix Gröbert, Ivan Fratric, Steve Henson]
2448 *) Harmonize version and its documentation. -f flag is used to display
2450 [mancha <mancha1@zoho.com>]
2452 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
2453 in i2d_ECPrivateKey.
2454 [mancha <mancha1@zoho.com>]
2456 *) Fix some double frees. These are not thought to be exploitable.
2457 [mancha <mancha1@zoho.com>]
2459 Changes between 1.0.1f and 1.0.1g [7 Apr 2014]
2461 *) A missing bounds check in the handling of the TLS heartbeat extension
2462 can be used to reveal up to 64k of memory to a connected client or
2465 Thanks for Neel Mehta of Google Security for discovering this bug and to
2466 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
2467 preparing the fix (CVE-2014-0160)
2468 [Adam Langley, Bodo Moeller]
2470 *) Fix for the attack described in the paper "Recovering OpenSSL
2471 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
2472 by Yuval Yarom and Naomi Benger. Details can be obtained from:
2473 http://eprint.iacr.org/2014/140
2475 Thanks to Yuval Yarom and Naomi Benger for discovering this
2476 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
2477 [Yuval Yarom and Naomi Benger]
2479 *) TLS pad extension: draft-agl-tls-padding-03
2481 Workaround for the "TLS hang bug" (see FAQ and PR#2771): if the
2482 TLS client Hello record length value would otherwise be > 255 and
2483 less that 512 pad with a dummy extension containing zeroes so it
2484 is at least 512 bytes long.
2486 [Adam Langley, Steve Henson]
2488 Changes between 1.0.1e and 1.0.1f [6 Jan 2014]
2490 *) Fix for TLS record tampering bug. A carefully crafted invalid
2491 handshake could crash OpenSSL with a NULL pointer exception.
2492 Thanks to Anton Johansson for reporting this issues.
2495 *) Keep original DTLS digest and encryption contexts in retransmission
2496 structures so we can use the previous session parameters if they need
2497 to be resent. (CVE-2013-6450)
2500 *) Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which
2501 avoids preferring ECDHE-ECDSA ciphers when the client appears to be
2502 Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for
2503 several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug
2504 is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing
2505 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer.
2506 [Rob Stradling, Adam Langley]
2508 Changes between 1.0.1d and 1.0.1e [11 Feb 2013]
2510 *) Correct fix for CVE-2013-0169. The original didn't work on AES-NI
2511 supporting platforms or when small records were transferred.
2512 [Andy Polyakov, Steve Henson]
2514 Changes between 1.0.1c and 1.0.1d [5 Feb 2013]
2516 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
2518 This addresses the flaw in CBC record processing discovered by
2519 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
2520 at: http://www.isg.rhul.ac.uk/tls/
2522 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
2523 Security Group at Royal Holloway, University of London
2524 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
2525 Emilia Käsper for the initial patch.
2527 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
2529 *) Fix flaw in AESNI handling of TLS 1.2 and 1.1 records for CBC mode
2530 ciphersuites which can be exploited in a denial of service attack.
2531 Thanks go to and to Adam Langley <agl@chromium.org> for discovering
2532 and detecting this bug and to Wolfgang Ettlinger
2533 <wolfgang.ettlinger@gmail.com> for independently discovering this issue.
2537 *) Return an error when checking OCSP signatures when key is NULL.
2538 This fixes a DoS attack. (CVE-2013-0166)
2541 *) Make openssl verify return errors.
2542 [Chris Palmer <palmer@google.com> and Ben Laurie]
2544 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
2545 the right response is stapled. Also change SSL_get_certificate()
2546 so it returns the certificate actually sent.
2547 See http://rt.openssl.org/Ticket/Display.html?id=2836.
2548 [Rob Stradling <rob.stradling@comodo.com>]
2550 *) Fix possible deadlock when decoding public keys.
2553 *) Don't use TLS 1.0 record version number in initial client hello
2557 Changes between 1.0.1b and 1.0.1c [10 May 2012]
2559 *) Sanity check record length before skipping explicit IV in TLS
2560 1.2, 1.1 and DTLS to fix DoS attack.
2562 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
2563 fuzzing as a service testing platform.
2567 *) Initialise tkeylen properly when encrypting CMS messages.
2568 Thanks to Solar Designer of Openwall for reporting this issue.
2571 *) In FIPS mode don't try to use composite ciphers as they are not
2575 Changes between 1.0.1a and 1.0.1b [26 Apr 2012]
2577 *) OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and
2578 1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately
2579 mean any application compiled against OpenSSL 1.0.0 headers setting
2580 SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disablng
2581 TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to
2582 0x10000000L Any application which was previously compiled against
2583 OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1
2584 will need to be recompiled as a result. Letting be results in
2585 inability to disable specifically TLS 1.1 and in client context,
2586 in unlike event, limit maximum offered version to TLS 1.0 [see below].
2589 *) In order to ensure interoperabilty SSL_OP_NO_protocolX does not
2590 disable just protocol X, but all protocols above X *if* there are
2591 protocols *below* X still enabled. In more practical terms it means
2592 that if application wants to disable TLS1.0 in favor of TLS1.1 and
2593 above, it's not sufficient to pass SSL_OP_NO_TLSv1, one has to pass
2594 SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2. This applies to
2598 Changes between 1.0.1 and 1.0.1a [19 Apr 2012]
2600 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
2601 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
2602 in CRYPTO_realloc_clean.
2604 Thanks to Tavis Ormandy, Google Security Team, for discovering this
2605 issue and to Adam Langley <agl@chromium.org> for fixing it.
2607 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
2609 *) Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections.
2612 *) Workarounds for some broken servers that "hang" if a client hello
2613 record length exceeds 255 bytes.
2615 1. Do not use record version number > TLS 1.0 in initial client
2616 hello: some (but not all) hanging servers will now work.
2617 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate
2618 the number of ciphers sent in the client hello. This should be
2619 set to an even number, such as 50, for example by passing:
2620 -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure.
2621 Most broken servers should now work.
2622 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable
2623 TLS 1.2 client support entirely.
2626 *) Fix SEGV in Vector Permutation AES module observed in OpenSSH.
2629 Changes between 1.0.0h and 1.0.1 [14 Mar 2012]
2631 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET
2632 STRING form instead of a DigestInfo.
2635 *) The format used for MDC2 RSA signatures is inconsistent between EVP
2636 and the RSA_sign/RSA_verify functions. This was made more apparent when
2637 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
2638 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
2639 the correct format in RSA_verify so both forms transparently work.
2642 *) Some servers which support TLS 1.0 can choke if we initially indicate
2643 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
2644 encrypted premaster secret. As a workaround use the maximum permitted
2645 client version in client hello, this should keep such servers happy
2646 and still work with previous versions of OpenSSL.
2649 *) Add support for TLS/DTLS heartbeats.
2650 [Robin Seggelmann <seggelmann@fh-muenster.de>]
2652 *) Add support for SCTP.
2653 [Robin Seggelmann <seggelmann@fh-muenster.de>]
2655 *) Improved PRNG seeding for VOS.
2656 [Paul Green <Paul.Green@stratus.com>]
2658 *) Extensive assembler packs updates, most notably:
2660 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
2661 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
2662 - x86_64: bit-sliced AES implementation;
2663 - ARM: NEON support, contemporary platforms optimizations;
2664 - s390x: z196 support;
2665 - *: GHASH and GF(2^m) multiplication implementations;
2669 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
2670 (removal of unnecessary code)
2671 [Peter Sylvester <peter.sylvester@edelweb.fr>]
2673 *) Add TLS key material exporter from RFC 5705.
2676 *) Add DTLS-SRTP negotiation from RFC 5764.
2679 *) Add Next Protocol Negotiation,
2680 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
2681 disabled with a no-npn flag to config or Configure. Code donated
2683 [Adam Langley <agl@google.com> and Ben Laurie]
2685 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
2686 NIST-P256, NIST-P521, with constant-time single point multiplication on
2687 typical inputs. Compiler support for the nonstandard type __uint128_t is
2688 required to use this (present in gcc 4.4 and later, for 64-bit builds).
2689 Code made available under Apache License version 2.0.
2691 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
2692 line to include this in your build of OpenSSL, and run "make depend" (or
2693 "make update"). This enables the following EC_METHODs:
2695 EC_GFp_nistp224_method()
2696 EC_GFp_nistp256_method()
2697 EC_GFp_nistp521_method()
2699 EC_GROUP_new_by_curve_name() will automatically use these (while
2700 EC_GROUP_new_curve_GFp() currently prefers the more flexible
2702 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
2704 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
2705 all platforms. Move ssize_t definition from e_os.h to the public
2706 header file e_os2.h as it now appears in public header file cms.h
2709 *) New -sigopt option to the ca, req and x509 utilities. Additional
2710 signature parameters can be passed using this option and in
2714 *) Add RSA PSS signing function. This will generate and set the
2715 appropriate AlgorithmIdentifiers for PSS based on those in the
2716 corresponding EVP_MD_CTX structure. No application support yet.
2719 *) Support for companion algorithm specific ASN1 signing routines.
2720 New function ASN1_item_sign_ctx() signs a pre-initialised
2721 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
2722 the appropriate parameters.
2725 *) Add new algorithm specific ASN1 verification initialisation function
2726 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
2727 handling will be the same no matter what EVP_PKEY_METHOD is used.
2728 Add a PSS handler to support verification of PSS signatures: checked
2729 against a number of sample certificates.
2732 *) Add signature printing for PSS. Add PSS OIDs.
2733 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
2735 *) Add algorithm specific signature printing. An individual ASN1 method
2736 can now print out signatures instead of the standard hex dump.
2738 More complex signatures (e.g. PSS) can print out more meaningful
2739 information. Include DSA version that prints out the signature
2743 *) Password based recipient info support for CMS library: implementing
2747 *) Split password based encryption into PBES2 and PBKDF2 functions. This
2748 neatly separates the code into cipher and PBE sections and is required
2749 for some algorithms that split PBES2 into separate pieces (such as
2750 password based CMS).
2753 *) Session-handling fixes:
2754 - Fix handling of connections that are resuming with a session ID,
2755 but also support Session Tickets.
2756 - Fix a bug that suppressed issuing of a new ticket if the client
2757 presented a ticket with an expired session.
2758 - Try to set the ticket lifetime hint to something reasonable.
2759 - Make tickets shorter by excluding irrelevant information.
2760 - On the client side, don't ignore renewed tickets.
2761 [Adam Langley, Bodo Moeller (Google)]
2763 *) Fix PSK session representation.
2766 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
2768 This work was sponsored by Intel.
2771 *) Add GCM support to TLS library. Some custom code is needed to split
2772 the IV between the fixed (from PRF) and explicit (from TLS record)
2773 portions. This adds all GCM ciphersuites supported by RFC5288 and
2774 RFC5289. Generalise some AES* cipherstrings to include GCM and
2775 add a special AESGCM string for GCM only.
2778 *) Expand range of ctrls for AES GCM. Permit setting invocation
2779 field on decrypt and retrieval of invocation field only on encrypt.
2782 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
2783 As required by RFC5289 these ciphersuites cannot be used if for
2784 versions of TLS earlier than 1.2.
2787 *) For FIPS capable OpenSSL interpret a NULL default public key method
2788 as unset and return the appropriate default but do *not* set the default.
2789 This means we can return the appropriate method in applications that
2790 switch between FIPS and non-FIPS modes.
2793 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
2794 ENGINE is used then we cannot handle that in the FIPS module so we
2795 keep original code iff non-FIPS operations are allowed.
2798 *) Add -attime option to openssl utilities.
2799 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
2801 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
2804 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
2805 FIPS EC methods unconditionally for now.
2808 *) New build option no-ec2m to disable characteristic 2 code.
2811 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
2812 all cases can be covered as some introduce binary incompatibilities.
2815 *) Redirect RSA operations to FIPS module including keygen,
2816 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
2819 *) Add similar low level API blocking to ciphers.
2822 *) Low level digest APIs are not approved in FIPS mode: any attempt
2823 to use these will cause a fatal error. Applications that *really* want
2824 to use them can use the private_* version instead.
2827 *) Redirect cipher operations to FIPS module for FIPS builds.
2830 *) Redirect digest operations to FIPS module for FIPS builds.
2833 *) Update build system to add "fips" flag which will link in fipscanister.o
2834 for static and shared library builds embedding a signature if needed.
2837 *) Output TLS supported curves in preference order instead of numerical
2838 order. This is currently hardcoded for the highest order curves first.
2839 This should be configurable so applications can judge speed vs strength.
2842 *) Add TLS v1.2 server support for client authentication.
2845 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
2849 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
2850 FIPS modules versions.
2853 *) Add TLS v1.2 client side support for client authentication. Keep cache
2854 of handshake records longer as we don't know the hash algorithm to use
2855 until after the certificate request message is received.
2858 *) Initial TLS v1.2 client support. Add a default signature algorithms
2859 extension including all the algorithms we support. Parse new signature
2860 format in client key exchange. Relax some ECC signing restrictions for
2861 TLS v1.2 as indicated in RFC5246.
2864 *) Add server support for TLS v1.2 signature algorithms extension. Switch
2865 to new signature format when needed using client digest preference.
2866 All server ciphersuites should now work correctly in TLS v1.2. No client
2867 support yet and no support for client certificates.
2870 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
2871 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
2872 ciphersuites. At present only RSA key exchange ciphersuites work with
2873 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
2874 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
2875 and version checking.
2878 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
2879 with this defined it will not be affected by any changes to ssl internal
2880 structures. Add several utility functions to allow openssl application
2881 to work with OPENSSL_NO_SSL_INTERN defined.
2885 [Tom Wu <tjw@cs.stanford.edu> and Ben Laurie]
2887 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
2890 *) Permit abbreviated handshakes when renegotiating using the function
2891 SSL_renegotiate_abbreviated().
2892 [Robin Seggelmann <seggelmann@fh-muenster.de>]
2894 *) Add call to ENGINE_register_all_complete() to
2895 ENGINE_load_builtin_engines(), so some implementations get used
2896 automatically instead of needing explicit application support.
2899 *) Add support for TLS key exporter as described in RFC5705.
2900 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
2902 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
2903 a few changes are required:
2905 Add SSL_OP_NO_TLSv1_1 flag.
2906 Add TLSv1_1 methods.
2907 Update version checking logic to handle version 1.1.
2908 Add explicit IV handling (ported from DTLS code).
2909 Add command line options to s_client/s_server.
2912 Changes between 1.0.0g and 1.0.0h [12 Mar 2012]
2914 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
2915 in CMS and PKCS7 code. When RSA decryption fails use a random key for
2916 content decryption and always return the same error. Note: this attack
2917 needs on average 2^20 messages so it only affects automated senders. The
2918 old behaviour can be re-enabled in the CMS code by setting the
2919 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
2920 an MMA defence is not necessary.
2921 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
2922 this issue. (CVE-2012-0884)
2925 *) Fix CVE-2011-4619: make sure we really are receiving a
2926 client hello before rejecting multiple SGC restarts. Thanks to
2927 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
2930 Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
2932 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
2933 Thanks to Antonio Martin, Enterprise Secure Access Research and
2934 Development, Cisco Systems, Inc. for discovering this bug and
2935 preparing a fix. (CVE-2012-0050)
2938 Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
2940 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
2941 of the Vaudenay padding oracle attack on CBC mode encryption
2942 which enables an efficient plaintext recovery attack against
2943 the OpenSSL implementation of DTLS. Their attack exploits timing
2944 differences arising during decryption processing. A research
2945 paper describing this attack can be found at:
2946 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
2947 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
2948 Security Group at Royal Holloway, University of London
2949 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
2950 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
2951 for preparing the fix. (CVE-2011-4108)
2952 [Robin Seggelmann, Michael Tuexen]
2954 *) Clear bytes used for block padding of SSL 3.0 records.
2956 [Adam Langley (Google)]
2958 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
2959 Kadianakis <desnacked@gmail.com> for discovering this issue and
2960 Adam Langley for preparing the fix. (CVE-2011-4619)
2961 [Adam Langley (Google)]
2963 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
2964 [Andrey Kulikov <amdeich@gmail.com>]
2966 *) Prevent malformed RFC3779 data triggering an assertion failure.
2967 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
2968 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
2969 [Rob Austein <sra@hactrn.net>]
2971 *) Improved PRNG seeding for VOS.
2972 [Paul Green <Paul.Green@stratus.com>]
2974 *) Fix ssl_ciph.c set-up race.
2975 [Adam Langley (Google)]
2977 *) Fix spurious failures in ecdsatest.c.
2978 [Emilia Käsper (Google)]
2980 *) Fix the BIO_f_buffer() implementation (which was mixing different
2981 interpretations of the '..._len' fields).
2982 [Adam Langley (Google)]
2984 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
2985 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
2986 threads won't reuse the same blinding coefficients.
2988 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
2989 lock to call BN_BLINDING_invert_ex, and avoids one use of
2990 BN_BLINDING_update for each BN_BLINDING structure (previously,
2991 the last update always remained unused).
2992 [Emilia Käsper (Google)]
2994 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
2995 [Bob Buckholz (Google)]
2997 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
2999 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
3000 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
3001 [Kaspar Brand <ossl@velox.ch>]
3003 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
3004 for multi-threaded use of ECDH. (CVE-2011-3210)
3005 [Adam Langley (Google)]
3007 *) Fix x509_name_ex_d2i memory leak on bad inputs.
3010 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
3011 signature public key algorithm by using OID xref utilities instead.
3012 Before this you could only use some ECC ciphersuites with SHA1 only.
3015 *) Add protection against ECDSA timing attacks as mentioned in the paper
3016 by Billy Bob Brumley and Nicola Tuveri, see:
3018 http://eprint.iacr.org/2011/232.pdf
3020 [Billy Bob Brumley and Nicola Tuveri]
3022 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
3024 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
3025 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
3027 *) Fix bug in string printing code: if *any* escaping is enabled we must
3028 escape the escape character (backslash) or the resulting string is
3032 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
3034 *) Disable code workaround for ancient and obsolete Netscape browsers
3035 and servers: an attacker can use it in a ciphersuite downgrade attack.
3036 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
3039 *) Fixed J-PAKE implementation error, originally discovered by
3040 Sebastien Martini, further info and confirmation from Stefan
3041 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
3044 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
3046 *) Fix extension code to avoid race conditions which can result in a buffer
3047 overrun vulnerability: resumed sessions must not be modified as they can
3048 be shared by multiple threads. CVE-2010-3864
3051 *) Fix WIN32 build system to correctly link an ENGINE directory into
3055 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
3057 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
3059 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
3061 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
3063 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
3064 context. The operation can be customised via the ctrl mechanism in
3065 case ENGINEs want to include additional functionality.
3068 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
3071 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
3072 output hashes compatible with older versions of OpenSSL.
3073 [Willy Weisz <weisz@vcpc.univie.ac.at>]
3075 *) Fix compression algorithm handling: if resuming a session use the
3076 compression algorithm of the resumed session instead of determining
3077 it from client hello again. Don't allow server to change algorithm.
3080 *) Add load_crls() function to apps tidying load_certs() too. Add option
3081 to verify utility to allow additional CRLs to be included.
3084 *) Update OCSP request code to permit adding custom headers to the request:
3085 some responders need this.
3088 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
3090 [Julia Lawall <julia@diku.dk>]
3092 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
3093 needlessly dereferenced structures, used obsolete functions and
3094 didn't handle all updated verify codes correctly.
3097 *) Disable MD2 in the default configuration.
3100 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
3101 indicate the initial BIO being pushed or popped. This makes it possible
3102 to determine whether the BIO is the one explicitly called or as a result
3103 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
3104 it handles reference counts correctly and doesn't zero out the I/O bio
3105 when it is not being explicitly popped. WARNING: applications which
3106 included workarounds for the old buggy behaviour will need to be modified
3107 or they could free up already freed BIOs.
3110 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
3111 renaming to all platforms (within the 0.9.8 branch, this was
3112 done conditionally on Netware platforms to avoid a name clash).
3113 [Guenter <lists@gknw.net>]
3115 *) Add ECDHE and PSK support to DTLS.
3116 [Michael Tuexen <tuexen@fh-muenster.de>]
3118 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
3122 *) Add "missing" function EVP_MD_flags() (without this the only way to
3123 retrieve a digest flags is by accessing the structure directly. Update
3124 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
3125 or cipher is registered as in the "from" argument. Print out all
3126 registered digests in the dgst usage message instead of manually
3127 attempting to work them out.
3130 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
3131 this allows the use of compression and extensions. Change default cipher
3132 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
3133 by default unless an application cipher string requests it.
3136 *) Alter match criteria in PKCS12_parse(). It used to try to use local
3137 key ids to find matching certificates and keys but some PKCS#12 files
3138 don't follow the (somewhat unwritten) rules and this strategy fails.
3139 Now just gather all certificates together and the first private key
3140 then look for the first certificate that matches the key.
3143 *) Support use of registered digest and cipher names for dgst and cipher
3144 commands instead of having to add each one as a special case. So now
3151 openssl dgst -sha256 foo
3153 and this works for ENGINE based algorithms too.
3157 *) Update Gost ENGINE to support parameter files.
3158 [Victor B. Wagner <vitus@cryptocom.ru>]
3160 *) Support GeneralizedTime in ca utility.
3161 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
3163 *) Enhance the hash format used for certificate directory links. The new
3164 form uses the canonical encoding (meaning equivalent names will work
3165 even if they aren't identical) and uses SHA1 instead of MD5. This form
3166 is incompatible with the older format and as a result c_rehash should
3167 be used to rebuild symbolic links.
3170 *) Make PKCS#8 the default write format for private keys, replacing the
3171 traditional format. This form is standardised, more secure and doesn't
3172 include an implicit MD5 dependency.
3175 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
3176 committed to OpenSSL should pass this lot as a minimum.
3179 *) Add session ticket override functionality for use by EAP-FAST.
3180 [Jouni Malinen <j@w1.fi>]
3182 *) Modify HMAC functions to return a value. Since these can be implemented
3183 in an ENGINE errors can occur.
3186 *) Type-checked OBJ_bsearch_ex.
3189 *) Type-checked OBJ_bsearch. Also some constification necessitated
3190 by type-checking. Still to come: TXT_DB, bsearch(?),
3191 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
3195 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
3196 seconds to a tm structure directly, instead of going through OS
3197 specific date routines. This avoids any issues with OS routines such
3198 as the year 2038 bug. New *_adj() functions for ASN1 time structures
3199 and X509_time_adj_ex() to cover the extended range. The existing
3200 X509_time_adj() is still usable and will no longer have any date issues.
3203 *) Delta CRL support. New use deltas option which will attempt to locate
3204 and search any appropriate delta CRLs available.
3206 This work was sponsored by Google.
3209 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
3210 code and add additional score elements. Validate alternate CRL paths
3211 as part of the CRL checking and indicate a new error "CRL path validation
3212 error" in this case. Applications wanting additional details can use
3213 the verify callback and check the new "parent" field. If this is not
3214 NULL CRL path validation is taking place. Existing applications won't
3215 see this because it requires extended CRL support which is off by
3218 This work was sponsored by Google.
3221 *) Support for freshest CRL extension.
3223 This work was sponsored by Google.
3226 *) Initial indirect CRL support. Currently only supported in the CRLs
3227 passed directly and not via lookup. Process certificate issuer
3228 CRL entry extension and lookup CRL entries by bother issuer name
3229 and serial number. Check and process CRL issuer entry in IDP extension.
3231 This work was sponsored by Google.
3234 *) Add support for distinct certificate and CRL paths. The CRL issuer
3235 certificate is validated separately in this case. Only enabled if
3236 an extended CRL support flag is set: this flag will enable additional
3237 CRL functionality in future.
3239 This work was sponsored by Google.
3242 *) Add support for policy mappings extension.
3244 This work was sponsored by Google.
3247 *) Fixes to pathlength constraint, self issued certificate handling,
3248 policy processing to align with RFC3280 and PKITS tests.
3250 This work was sponsored by Google.
3253 *) Support for name constraints certificate extension. DN, email, DNS
3254 and URI types are currently supported.
3256 This work was sponsored by Google.
3259 *) To cater for systems that provide a pointer-based thread ID rather
3260 than numeric, deprecate the current numeric thread ID mechanism and
3261 replace it with a structure and associated callback type. This
3262 mechanism allows a numeric "hash" to be extracted from a thread ID in
3263 either case, and on platforms where pointers are larger than 'long',
3264 mixing is done to help ensure the numeric 'hash' is usable even if it
3265 can't be guaranteed unique. The default mechanism is to use "&errno"
3266 as a pointer-based thread ID to distinguish between threads.
3268 Applications that want to provide their own thread IDs should now use
3269 CRYPTO_THREADID_set_callback() to register a callback that will call
3270 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
3272 Note that ERR_remove_state() is now deprecated, because it is tied
3273 to the assumption that thread IDs are numeric. ERR_remove_state(0)
3274 to free the current thread's error state should be replaced by
3275 ERR_remove_thread_state(NULL).
3277 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
3278 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
3279 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
3280 application was previously providing a numeric thread callback that
3281 was inappropriate for distinguishing threads, then uniqueness might
3282 have been obtained with &errno that happened immediately in the
3283 intermediate development versions of OpenSSL; this is no longer the
3284 case, the numeric thread callback will now override the automatic use
3286 [Geoff Thorpe, with help from Bodo Moeller]
3288 *) Initial support for different CRL issuing certificates. This covers a
3289 simple case where the self issued certificates in the chain exist and
3290 the real CRL issuer is higher in the existing chain.
3292 This work was sponsored by Google.
3295 *) Removed effectively defunct crypto/store from the build.
3298 *) Revamp of STACK to provide stronger type-checking. Still to come:
3299 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
3300 ASN1_STRING, CONF_VALUE.
3303 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
3304 RAM on SSL connections. This option can save about 34k per idle SSL.
3307 *) Revamp of LHASH to provide stronger type-checking. Still to come:
3308 STACK, TXT_DB, bsearch, qsort.
3311 *) Initial support for Cryptographic Message Syntax (aka CMS) based
3312 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
3313 support for data, signedData, compressedData, digestedData and
3314 encryptedData, envelopedData types included. Scripts to check against
3315 RFC4134 examples draft and interop and consistency checks of many
3316 content types and variants.
3319 *) Add options to enc utility to support use of zlib compression BIO.
3322 *) Extend mk1mf to support importing of options and assembly language
3323 files from Configure script, currently only included in VC-WIN32.
3324 The assembly language rules can now optionally generate the source
3325 files from the associated perl scripts.
3328 *) Implement remaining functionality needed to support GOST ciphersuites.
3329 Interop testing has been performed using CryptoPro implementations.
3330 [Victor B. Wagner <vitus@cryptocom.ru>]
3332 *) s390x assembler pack.
3335 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
3339 *) Implement Opaque PRF Input TLS extension as specified in
3340 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
3341 official specification yet and no extension type assignment by
3342 IANA exists, this extension (for now) will have to be explicitly
3343 enabled when building OpenSSL by providing the extension number
3344 to use. For example, specify an option
3346 -DTLSEXT_TYPE_opaque_prf_input=0x9527
3348 to the "config" or "Configure" script to enable the extension,
3349 assuming extension number 0x9527 (which is a completely arbitrary
3350 and unofficial assignment based on the MD5 hash of the Internet
3351 Draft). Note that by doing so, you potentially lose
3352 interoperability with other TLS implementations since these might
3353 be using the same extension number for other purposes.
3355 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
3356 opaque PRF input value to use in the handshake. This will create
3357 an interal copy of the length-'len' string at 'src', and will
3358 return non-zero for success.
3360 To get more control and flexibility, provide a callback function
3363 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
3364 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
3368 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
3371 Callback function 'cb' will be called in handshakes, and is
3372 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
3373 Argument 'arg' is for application purposes (the value as given to
3374 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
3375 be provided to the callback function). The callback function
3376 has to return non-zero to report success: usually 1 to use opaque
3377 PRF input just if possible, or 2 to enforce use of the opaque PRF
3378 input. In the latter case, the library will abort the handshake
3379 if opaque PRF input is not successfully negotiated.
3381 Arguments 'peerinput' and 'len' given to the callback function
3382 will always be NULL and 0 in the case of a client. A server will
3383 see the client's opaque PRF input through these variables if
3384 available (NULL and 0 otherwise). Note that if the server
3385 provides an opaque PRF input, the length must be the same as the
3386 length of the client's opaque PRF input.
3388 Note that the callback function will only be called when creating
3389 a new session (session resumption can resume whatever was
3390 previously negotiated), and will not be called in SSL 2.0
3391 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
3392 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
3393 for applications that need to enforce opaque PRF input.
3397 *) Update ssl code to support digests other than SHA1+MD5 for handshake
3400 [Victor B. Wagner <vitus@cryptocom.ru>]
3402 *) Add RFC4507 support to OpenSSL. This includes the corrections in
3403 RFC4507bis. The encrypted ticket format is an encrypted encoded
3404 SSL_SESSION structure, that way new session features are automatically
3407 If a client application caches session in an SSL_SESSION structure
3408 support is transparent because tickets are now stored in the encoded
3411 The SSL_CTX structure automatically generates keys for ticket
3412 protection in servers so again support should be possible
3413 with no application modification.
3415 If a client or server wishes to disable RFC4507 support then the option
3416 SSL_OP_NO_TICKET can be set.
3418 Add a TLS extension debugging callback to allow the contents of any client
3419 or server extensions to be examined.
3421 This work was sponsored by Google.
3424 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
3425 OpenSSL should now compile cleanly on gcc 4.2
3426 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
3428 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
3429 support including streaming MAC support: this is required for GOST
3430 ciphersuite support.
3431 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
3433 *) Add option -stream to use PKCS#7 streaming in smime utility. New
3434 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
3435 to output in BER and PEM format.
3438 *) Experimental support for use of HMAC via EVP_PKEY interface. This
3439 allows HMAC to be handled via the EVP_DigestSign*() interface. The
3440 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
3441 ENGINE support for HMAC keys which are unextractable. New -mac and
3442 -macopt options to dgst utility.
3445 *) New option -sigopt to dgst utility. Update dgst to use
3446 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
3447 alternative signing parameters such as X9.31 or PSS in the dgst
3451 *) Change ssl_cipher_apply_rule(), the internal function that does
3452 the work each time a ciphersuite string requests enabling
3453 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
3454 removing ("!foo+bar") a class of ciphersuites: Now it maintains
3455 the order of disabled ciphersuites such that those ciphersuites
3456 that most recently went from enabled to disabled not only stay
3457 in order with respect to each other, but also have higher priority
3458 than other disabled ciphersuites the next time ciphersuites are
3461 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
3462 the same ciphersuites as with "HIGH" alone, but in a specific
3463 order where the PSK ciphersuites come first (since they are the
3464 most recently disabled ciphersuites when "HIGH" is parsed).
3466 Also, change ssl_create_cipher_list() (using this new
3467 funcionality) such that between otherwise identical
3468 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
3472 *) Change ssl_create_cipher_list() so that it automatically
3473 arranges the ciphersuites in reasonable order before starting
3474 to process the rule string. Thus, the definition for "DEFAULT"
3475 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
3476 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
3477 This makes it much easier to arrive at a reasonable default order
3478 in applications for which anonymous ciphers are OK (meaning
3479 that you can't actually use DEFAULT).
3480 [Bodo Moeller; suggested by Victor Duchovni]
3482 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
3483 processing) into multiple integers instead of setting
3484 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
3485 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
3486 (These masks as well as the individual bit definitions are hidden
3487 away into the non-exported interface ssl/ssl_locl.h, so this
3488 change to the definition of the SSL_CIPHER structure shouldn't
3489 affect applications.) This give us more bits for each of these
3490 categories, so there is no longer a need to coagulate AES128 and
3491 AES256 into a single algorithm bit, and to coagulate Camellia128
3492 and Camellia256 into a single algorithm bit, which has led to all
3495 Thus, among other things, the kludge introduced in 0.9.7m and
3496 0.9.8e for masking out AES256 independently of AES128 or masking
3497 out Camellia256 independently of AES256 is not needed here in 0.9.9.
3499 With the change, we also introduce new ciphersuite aliases that
3500 so far were missing: "AES128", "AES256", "CAMELLIA128", and
3504 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
3505 Use the leftmost N bytes of the signature input if the input is
3506 larger than the prime q (with N being the size in bytes of q).
3509 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
3510 it yet and it is largely untested.
3513 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
3516 *) Initial incomplete changes to avoid need for function casts in OpenSSL
3517 some compilers (gcc 4.2 and later) reject their use. Safestack is
3518 reimplemented. Update ASN1 to avoid use of legacy functions.
3521 *) Win32/64 targets are linked with Winsock2.
3524 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
3525 to external functions. This can be used to increase CRL handling
3526 efficiency especially when CRLs are very large by (for example) storing
3527 the CRL revoked certificates in a database.
3530 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
3531 new CRLs added to a directory can be used. New command line option
3532 -verify_return_error to s_client and s_server. This causes real errors
3533 to be returned by the verify callback instead of carrying on no matter
3534 what. This reflects the way a "real world" verify callback would behave.
3537 *) GOST engine, supporting several GOST algorithms and public key formats.
3538 Kindly donated by Cryptocom.
3541 *) Partial support for Issuing Distribution Point CRL extension. CRLs
3542 partitioned by DP are handled but no indirect CRL or reason partitioning
3543 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
3544 selected via a scoring technique which handles IDP and AKID in CRLs.
3547 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
3548 will ultimately be used for all verify operations: this will remove the
3549 X509_STORE dependency on certificate verification and allow alternative
3550 lookup methods. X509_STORE based implementations of these two callbacks.
3553 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
3554 Modify get_crl() to find a valid (unexpired) CRL if possible.
3557 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
3558 this would be called X509_CRL_cmp() but that name is already used by
3559 a function that just compares CRL issuer names. Cache several CRL
3560 extensions in X509_CRL structure and cache CRLDP in X509.
3563 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
3564 this maps equivalent X509_NAME structures into a consistent structure.
3565 Name comparison can then be performed rapidly using memcmp().
3568 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
3572 *) Allow digests to supply their own micalg string for S/MIME type using
3573 the ctrl EVP_MD_CTRL_MICALG.
3576 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
3577 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
3578 ctrl. It can then customise the structure before and/or after signing
3582 *) New function OBJ_add_sigid() to allow application defined signature OIDs
3583 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
3584 to free up any added signature OIDs.
3587 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
3588 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
3589 digest and cipher tables. New options added to openssl utility:
3590 list-message-digest-algorithms and list-cipher-algorithms.
3593 *) Change the array representation of binary polynomials: the list
3594 of degrees of non-zero coefficients is now terminated with -1.
3595 Previously it was terminated with 0, which was also part of the
3596 value; thus, the array representation was not applicable to
3597 polynomials where t^0 has coefficient zero. This change makes
3598 the array representation useful in a more general context.
3601 *) Various modifications and fixes to SSL/TLS cipher string
3602 handling. For ECC, the code now distinguishes between fixed ECDH
3603 with RSA certificates on the one hand and with ECDSA certificates
3604 on the other hand, since these are separate ciphersuites. The
3605 unused code for Fortezza ciphersuites has been removed.
3607 For consistency with EDH, ephemeral ECDH is now called "EECDH"
3608 (not "ECDHE"). For consistency with the code for DH
3609 certificates, use of ECDH certificates is now considered ECDH
3610 authentication, not RSA or ECDSA authentication (the latter is
3611 merely the CA's signing algorithm and not actively used in the
3614 The temporary ciphersuite alias "ECCdraft" is no longer
3615 available, and ECC ciphersuites are no longer excluded from "ALL"
3616 and "DEFAULT". The following aliases now exist for RFC 4492
3617 ciphersuites, most of these by analogy with the DH case:
3619 kECDHr - ECDH cert, signed with RSA
3620 kECDHe - ECDH cert, signed with ECDSA
3621 kECDH - ECDH cert (signed with either RSA or ECDSA)
3622 kEECDH - ephemeral ECDH
3623 ECDH - ECDH cert or ephemeral ECDH
3629 AECDH - anonymous ECDH
3630 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
3634 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
3635 Use correct micalg parameters depending on digest(s) in signed message.
3638 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
3639 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
3642 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
3643 an engine to register a method. Add ENGINE lookups for methods and
3644 functional reference processing.
3647 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
3648 EVP_{Sign,Verify}* which allow an application to customise the signature
3652 *) New -resign option to smime utility. This adds one or more signers
3653 to an existing PKCS#7 signedData structure. Also -md option to use an
3654 alternative message digest algorithm for signing.
3657 *) Tidy up PKCS#7 routines and add new functions to make it easier to
3658 create PKCS7 structures containing multiple signers. Update smime
3659 application to support multiple signers.
3662 *) New -macalg option to pkcs12 utility to allow setting of an alternative
3666 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
3667 Reorganize PBE internals to lookup from a static table using NIDs,
3668 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
3669 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
3670 PRF which will be automatically used with PBES2.
3673 *) Replace the algorithm specific calls to generate keys in "req" with the
3677 *) Update PKCS#7 enveloped data routines to use new API. This is now
3678 supported by any public key method supporting the encrypt operation. A
3679 ctrl is added to allow the public key algorithm to examine or modify
3680 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
3684 *) Add a ctrl to asn1 method to allow a public key algorithm to express
3685 a default digest type to use. In most cases this will be SHA1 but some
3686 algorithms (such as GOST) need to specify an alternative digest. The
3687 return value indicates how strong the preference is 1 means optional and
3688 2 is mandatory (that is it is the only supported type). Modify
3689 ASN1_item_sign() to accept a NULL digest argument to indicate it should
3690 use the default md. Update openssl utilities to use the default digest
3691 type for signing if it is not explicitly indicated.
3694 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
3695 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
3696 signing method from the key type. This effectively removes the link
3697 between digests and public key types.
3700 *) Add an OID cross reference table and utility functions. Its purpose is to
3701 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
3702 rsaEncryption. This will allow some of the algorithm specific hackery
3703 needed to use the correct OID to be removed.
3706 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
3707 structures for PKCS7_sign(). They are now set up by the relevant public
3711 *) Add provisional EC pkey method with support for ECDSA and ECDH.
3714 *) Add support for key derivation (agreement) in the API, DH method and
3718 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
3719 public and private key formats. As a side effect these add additional
3720 command line functionality not previously available: DSA signatures can be
3721 generated and verified using pkeyutl and DH key support and generation in
3726 [Oliver Tappe <zooey@hirschkaefer.de>]
3728 *) New make target "install_html_docs" installs HTML renditions of the
3730 [Oliver Tappe <zooey@hirschkaefer.de>]
3732 *) New utility "genpkey" this is analogous to "genrsa" etc except it can
3733 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
3734 support key and parameter generation and add initial key generation
3735 functionality for RSA.
3738 *) Add functions for main EVP_PKEY_method operations. The undocumented
3739 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
3740 EVP_PKEY_{encrypt,decrypt}_old.
3743 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
3744 key API, doesn't do much yet.
3747 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
3748 public key algorithms. New option to openssl utility:
3749 "list-public-key-algorithms" to print out info.
3752 *) Implement the Supported Elliptic Curves Extension for
3753 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
3756 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
3757 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
3760 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
3761 utilities such as rsa, dsa, dsaparam etc except they process any key
3765 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
3766 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
3767 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
3771 *) Initial support for pluggable public key ASN1.
3772 De-spaghettify the public key ASN1 handling. Move public and private
3773 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
3774 algorithm specific handling to a single module within the relevant
3775 algorithm directory. Add functions to allow (near) opaque processing
3776 of public and private key structures.
3779 *) Implement the Supported Point Formats Extension for
3780 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
3783 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
3784 for the psk identity [hint] and the psk callback functions to the
3785 SSL_SESSION, SSL and SSL_CTX structure.
3788 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
3792 SSL_CTX_use_psk_identity_hint
3793 SSL_get_psk_identity_hint
3794 SSL_get_psk_identity
3795 SSL_use_psk_identity_hint
3797 [Mika Kousa and Pasi Eronen of Nokia Corporation]
3799 *) Add RFC 3161 compliant time stamp request creation, response generation
3800 and response verification functionality.
3801 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
3803 *) Add initial support for TLS extensions, specifically for the server_name
3804 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
3805 have new members for a host name. The SSL data structure has an
3806 additional member SSL_CTX *initial_ctx so that new sessions can be
3807 stored in that context to allow for session resumption, even after the
3808 SSL has been switched to a new SSL_CTX in reaction to a client's
3809 server_name extension.
3811 New functions (subject to change):
3813 SSL_get_servername()
3814 SSL_get_servername_type()
3817 New CTRL codes and macros (subject to change):
3819 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
3820 - SSL_CTX_set_tlsext_servername_callback()
3821 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
3822 - SSL_CTX_set_tlsext_servername_arg()
3823 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
3825 openssl s_client has a new '-servername ...' option.
3827 openssl s_server has new options '-servername_host ...', '-cert2 ...',
3828 '-key2 ...', '-servername_fatal' (subject to change). This allows
3829 testing the HostName extension for a specific single host name ('-cert'
3830 and '-key' remain fallbacks for handshakes without HostName
3831 negotiation). If the unrecognized_name alert has to be sent, this by
3832 default is a warning; it becomes fatal with the '-servername_fatal'
3835 [Peter Sylvester, Remy Allais, Christophe Renou]
3837 *) Whirlpool hash implementation is added.
3840 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
3841 bn(64,32). Because of instruction set limitations it doesn't have
3842 any negative impact on performance. This was done mostly in order
3843 to make it possible to share assembler modules, such as bn_mul_mont
3844 implementations, between 32- and 64-bit builds without hassle.
3847 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
3848 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
3852 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
3853 dedicated Montgomery multiplication procedure, is introduced.
3854 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
3855 "64-bit" performance on certain 32-bit targets.
3858 *) New option SSL_OP_NO_COMP to disable use of compression selectively
3859 in SSL structures. New SSL ctrl to set maximum send fragment size.
3860 Save memory by seeting the I/O buffer sizes dynamically instead of
3861 using the maximum available value.
3864 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
3865 in addition to the text details.
3868 *) Very, very preliminary EXPERIMENTAL support for printing of general
3869 ASN1 structures. This currently produces rather ugly output and doesn't
3870 handle several customised structures at all.
3873 *) Integrated support for PVK file format and some related formats such
3874 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
3875 these in the 'rsa' and 'dsa' utilities.
3878 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
3881 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
3882 place for the (very old) "NETSCAPE" format certificates which are now
3883 handled using new ASN1 code equivalents.
3886 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
3887 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
3888 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
3891 *) Modify CRL distribution points extension code to print out previously
3892 unsupported fields. Enhance extension setting code to allow setting of
3896 *) Add print and set support for Issuing Distribution Point CRL extension.
3899 *) Change 'Configure' script to enable Camellia by default.
3902 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
3904 *) When rejecting SSL/TLS records due to an incorrect version number, never
3905 update s->server with a new major version number. As of
3906 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
3907 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
3908 the previous behavior could result in a read attempt at NULL when
3909 receiving specific incorrect SSL/TLS records once record payload
3910 protection is active. (CVE-2010-0740)
3911 [Bodo Moeller, Adam Langley <agl@chromium.org>]
3913 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
3914 could be crashed if the relevant tables were not present (e.g. chrooted).
3915 [Tomas Hoger <thoger@redhat.com>]
3917 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
3919 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
3920 [Martin Olsson, Neel Mehta]
3922 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
3923 accommodate for stack sorting, always a write lock!).
3926 *) On some versions of WIN32 Heap32Next is very slow. This can cause
3927 excessive delays in the RAND_poll(): over a minute. As a workaround
3928 include a time check in the inner Heap32Next loop too.
3931 *) The code that handled flushing of data in SSL/TLS originally used the
3932 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
3933 the problem outlined in PR#1949. The fix suggested there however can
3934 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
3935 of Apache). So instead simplify the code to flush unconditionally.
3936 This should be fine since flushing with no data to flush is a no op.
3939 *) Handle TLS versions 2.0 and later properly and correctly use the
3940 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
3941 off ancient servers have a habit of sticking around for a while...
3944 *) Modify compression code so it frees up structures without using the
3945 ex_data callbacks. This works around a problem where some applications
3946 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
3947 restarting) then use compression (e.g. SSL with compression) later.
3948 This results in significant per-connection memory leaks and
3949 has caused some security issues including CVE-2008-1678 and
3953 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
3954 change when encrypting or decrypting.
3957 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
3958 connect and renegotiate with servers which do not support RI.
3959 Until RI is more widely deployed this option is enabled by default.
3962 *) Add "missing" ssl ctrls to clear options and mode.
3965 *) If client attempts to renegotiate and doesn't support RI respond with
3966 a no_renegotiation alert as required by RFC5746. Some renegotiating
3967 TLS clients will continue a connection gracefully when they receive
3968 the alert. Unfortunately OpenSSL mishandled this alert and would hang
3969 waiting for a server hello which it will never receive. Now we treat a
3970 received no_renegotiation alert as a fatal error. This is because
3971 applications requesting a renegotiation might well expect it to succeed
3972 and would have no code in place to handle the server denying it so the
3973 only safe thing to do is to terminate the connection.
3976 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
3977 peer supports secure renegotiation and 0 otherwise. Print out peer
3978 renegotiation support in s_client/s_server.
3981 *) Replace the highly broken and deprecated SPKAC certification method with
3982 the updated NID creation version. This should correctly handle UTF8.
3985 *) Implement RFC5746. Re-enable renegotiation but require the extension
3986 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
3987 turns out to be a bad idea. It has been replaced by
3988 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
3989 SSL_CTX_set_options(). This is really not recommended unless you
3990 know what you are doing.
3991 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
3993 *) Fixes to stateless session resumption handling. Use initial_ctx when
3994 issuing and attempting to decrypt tickets in case it has changed during
3995 servername handling. Use a non-zero length session ID when attempting
3996 stateless session resumption: this makes it possible to determine if
3997 a resumption has occurred immediately after receiving server hello
3998 (several places in OpenSSL subtly assume this) instead of later in
4002 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
4003 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
4004 fixes for a few places where the return code is not checked
4006 [Julia Lawall <julia@diku.dk>]
4008 *) Add --strict-warnings option to Configure script to include devteam
4009 warnings in other configurations.
4012 *) Add support for --libdir option and LIBDIR variable in makefiles. This
4013 makes it possible to install openssl libraries in locations which
4014 have names other than "lib", for example "/usr/lib64" which some
4016 [Steve Henson, based on patch from Jeremy Utley]
4018 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
4019 X690 8.9.12 and can produce some misleading textual output of OIDs.
4020 [Steve Henson, reported by Dan Kaminsky]
4022 *) Delete MD2 from algorithm tables. This follows the recommendation in
4023 several standards that it is not used in new applications due to
4024 several cryptographic weaknesses. For binary compatibility reasons
4025 the MD2 API is still compiled in by default.
4028 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
4032 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
4033 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
4035 [Guenter <lists@gknw.net>]
4037 *) Fix the server certificate chain building code to use X509_verify_cert(),
4038 it used to have an ad-hoc builder which was unable to cope with anything
4039 other than a simple chain.
4040 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
4042 *) Don't check self signed certificate signatures in X509_verify_cert()
4043 by default (a flag can override this): it just wastes time without
4044 adding any security. As a useful side effect self signed root CAs
4045 with non-FIPS digests are now usable in FIPS mode.
4048 *) In dtls1_process_out_of_seq_message() the check if the current message
4049 is already buffered was missing. For every new message was memory
4050 allocated, allowing an attacker to perform an denial of service attack
4051 with sending out of seq handshake messages until there is no memory
4052 left. Additionally every future messege was buffered, even if the
4053 sequence number made no sense and would be part of another handshake.
4054 So only messages with sequence numbers less than 10 in advance will be
4055 buffered. (CVE-2009-1378)
4056 [Robin Seggelmann, discovered by Daniel Mentz]
4058 *) Records are buffered if they arrive with a future epoch to be
4059 processed after finishing the corresponding handshake. There is
4060 currently no limitation to this buffer allowing an attacker to perform
4061 a DOS attack with sending records with future epochs until there is no
4062 memory left. This patch adds the pqueue_size() function to determine
4063 the size of a buffer and limits the record buffer to 100 entries.
4065 [Robin Seggelmann, discovered by Daniel Mentz]
4067 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
4068 parent structure is freed. (CVE-2009-1379)
4071 *) Handle non-blocking I/O properly in SSL_shutdown() call.
4072 [Darryl Miles <darryl-mailinglists@netbauds.net>]
4075 [Ilya O. <vrghost@gmail.com>]
4077 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
4079 *) Disable renegotiation completely - this fixes a severe security
4080 problem (CVE-2009-3555) at the cost of breaking all
4081 renegotiation. Renegotiation can be re-enabled by setting
4082 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
4083 run-time. This is really not recommended unless you know what
4087 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
4089 *) Don't set val to NULL when freeing up structures, it is freed up by
4090 underlying code. If sizeof(void *) > sizeof(long) this can result in
4091 zeroing past the valid field. (CVE-2009-0789)
4092 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
4094 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
4095 checked correctly. This would allow some invalid signed attributes to
4096 appear to verify correctly. (CVE-2009-0591)
4097 [Ivan Nestlerode <inestlerode@us.ibm.com>]
4099 *) Reject UniversalString and BMPString types with invalid lengths. This
4100 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
4101 a legal length. (CVE-2009-0590)
4104 *) Set S/MIME signing as the default purpose rather than setting it
4105 unconditionally. This allows applications to override it at the store
4109 *) Permit restricted recursion of ASN1 strings. This is needed in practice
4110 to handle some structures.
4113 *) Improve efficiency of mem_gets: don't search whole buffer each time
4115 [Jeremy Shapiro <jnshapir@us.ibm.com>]
4117 *) New -hex option for openssl rand.
4120 *) Print out UTF8String and NumericString when parsing ASN1.
4123 *) Support NumericString type for name components.
4126 *) Allow CC in the environment to override the automatically chosen
4127 compiler. Note that nothing is done to ensure flags work with the
4131 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
4133 *) Properly check EVP_VerifyFinal() and similar return values
4135 [Ben Laurie, Bodo Moeller, Google Security Team]
4137 *) Enable TLS extensions by default.
4140 *) Allow the CHIL engine to be loaded, whether the application is
4141 multithreaded or not. (This does not release the developer from the
4142 obligation to set up the dynamic locking callbacks.)
4143 [Sander Temme <sander@temme.net>]
4145 *) Use correct exit code if there is an error in dgst command.
4146 [Steve Henson; problem pointed out by Roland Dirlewanger]
4148 *) Tweak Configure so that you need to say "experimental-jpake" to enable
4149 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
4152 *) Add experimental JPAKE support, including demo authentication in
4153 s_client and s_server.
4156 *) Set the comparison function in v3_addr_canonize().
4157 [Rob Austein <sra@hactrn.net>]
4159 *) Add support for XMPP STARTTLS in s_client.
4160 [Philip Paeps <philip@freebsd.org>]
4162 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
4163 to ensure that even with this option, only ciphersuites in the
4164 server's preference list will be accepted. (Note that the option
4165 applies only when resuming a session, so the earlier behavior was
4166 just about the algorithm choice for symmetric cryptography.)
4169 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
4171 *) Fix NULL pointer dereference if a DTLS server received
4172 ChangeCipherSpec as first record (CVE-2009-1386).
4175 *) Fix a state transition in s3_srvr.c and d1_srvr.c
4176 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
4179 *) The fix in 0.9.8c that supposedly got rid of unsafe
4180 double-checked locking was incomplete for RSA blinding,
4181 addressing just one layer of what turns out to have been
4182 doubly unsafe triple-checked locking.
4184 So now fix this for real by retiring the MONT_HELPER macro
4185 in crypto/rsa/rsa_eay.c.
4187 [Bodo Moeller; problem pointed out by Marius Schilder]
4189 *) Various precautionary measures:
4191 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
4193 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
4194 (NB: This would require knowledge of the secret session ticket key
4195 to exploit, in which case you'd be SOL either way.)
4197 - Change bn_nist.c so that it will properly handle input BIGNUMs
4198 outside the expected range.
4200 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
4203 [Neel Mehta, Bodo Moeller]
4205 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
4206 the load fails. Useful for distros.
4207 [Ben Laurie and the FreeBSD team]
4209 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
4212 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
4215 *) Expand ENGINE to support engine supplied SSL client certificate functions.
4217 This work was sponsored by Logica.
4220 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
4221 keystores. Support for SSL/TLS client authentication too.
4222 Not compiled unless enable-capieng specified to Configure.
4224 This work was sponsored by Logica.
4227 *) Fix bug in X509_ATTRIBUTE creation: don't set attribute using
4228 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
4229 attribute creation routines such as certificate requests and PKCS#12
4233 Changes between 0.9.8g and 0.9.8h [28 May 2008]
4235 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
4236 handshake which could lead to a cilent crash as found using the
4237 Codenomicon TLS test suite (CVE-2008-1672)
4238 [Steve Henson, Mark Cox]
4240 *) Fix double free in TLS server name extensions which could lead to
4241 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
4244 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
4246 Clear the error queue to ensure that error entries left from
4247 older function calls do not interfere with the correct operation.
4248 [Lutz Jaenicke, Erik de Castro Lopo]
4250 *) Remove root CA certificates of commercial CAs:
4252 The OpenSSL project does not recommend any specific CA and does not
4253 have any policy with respect to including or excluding any CA.
4254 Therefore it does not make any sense to ship an arbitrary selection
4255 of root CA certificates with the OpenSSL software.
4258 *) RSA OAEP patches to fix two separate invalid memory reads.
4259 The first one involves inputs when 'lzero' is greater than
4260 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
4261 before the beginning of from). The second one involves inputs where
4262 the 'db' section contains nothing but zeroes (there is a one-byte
4263 invalid read after the end of 'db').
4264 [Ivan Nestlerode <inestlerode@us.ibm.com>]
4266 *) Partial backport from 0.9.9-dev:
4268 Introduce bn_mul_mont (dedicated Montgomery multiplication
4269 procedure) as a candidate for BIGNUM assembler implementation.
4270 While 0.9.9-dev uses assembler for various architectures, only
4271 x86_64 is available by default here in the 0.9.8 branch, and
4272 32-bit x86 is available through a compile-time setting.
4274 To try the 32-bit x86 assembler implementation, use Configure
4275 option "enable-montasm" (which exists only for this backport).
4277 As "enable-montasm" for 32-bit x86 disclaims code stability
4278 anyway, in this constellation we activate additional code
4279 backported from 0.9.9-dev for further performance improvements,
4280 namely BN_from_montgomery_word. (To enable this otherwise,
4281 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
4283 [Andy Polyakov (backport partially by Bodo Moeller)]
4285 *) Add TLS session ticket callback. This allows an application to set
4286 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
4287 values. This is useful for key rollover for example where several key
4288 sets may exist with different names.
4291 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
4292 This was broken until now in 0.9.8 releases, such that the only way
4293 a registered ENGINE could be used (assuming it initialises
4294 successfully on the host) was to explicitly set it as the default
4295 for the relevant algorithms. This is in contradiction with 0.9.7
4296 behaviour and the documentation. With this fix, when an ENGINE is
4297 registered into a given algorithm's table of implementations, the
4298 'uptodate' flag is reset so that auto-discovery will be used next
4299 time a new context for that algorithm attempts to select an
4301 [Ian Lister (tweaked by Geoff Thorpe)]
4303 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
4304 implementation in the following ways:
4306 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
4309 Lack of BER streaming support means one pass streaming processing is
4310 only supported if data is detached: setting the streaming flag is
4311 ignored for embedded content.
4313 CMS support is disabled by default and must be explicitly enabled
4314 with the enable-cms configuration option.
4317 *) Update the GMP engine glue to do direct copies between BIGNUM and
4318 mpz_t when openssl and GMP use the same limb size. Otherwise the
4319 existing "conversion via a text string export" trick is still used.
4320 [Paul Sheer <paulsheer@gmail.com>]
4322 *) Zlib compression BIO. This is a filter BIO which compressed and
4323 uncompresses any data passed through it.
4326 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
4327 RFC3394 compatible AES key wrapping.
4330 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
4331 sets string data without copying. X509_ALGOR_set0() and
4332 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
4333 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
4334 from an X509_ATTRIBUTE structure optionally checking it occurs only
4335 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
4339 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
4340 to get the expected BN_FLG_CONSTTIME behavior.
4341 [Bodo Moeller (Google)]
4345 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
4346 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
4347 - added some more tests to do_tests.pl
4348 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
4349 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
4350 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
4351 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
4352 - various changes to netware.pl to enable gcc-cross builds on Win32
4354 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
4355 - various changes to fix missing prototype warnings
4356 - fixed x86nasm.pl to create correct asm files for NASM COFF output
4357 - added AES, WHIRLPOOL and CPUID assembler code to build files
4358 - added missing AES assembler make rules to mk1mf.pl
4359 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
4360 [Guenter Knauf <eflash@gmx.net>]
4362 *) Implement certificate status request TLS extension defined in RFC3546.
4363 A client can set the appropriate parameters and receive the encoded
4364 OCSP response via a callback. A server can query the supplied parameters
4365 and set the encoded OCSP response in the callback. Add simplified examples
4366 to s_client and s_server.
4369 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
4371 *) Fix various bugs:
4372 + Binary incompatibility of ssl_ctx_st structure
4373 + DTLS interoperation with non-compliant servers
4374 + Don't call get_session_cb() without proposed session
4375 + Fix ia64 assembler code
4376 [Andy Polyakov, Steve Henson]
4378 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
4380 *) DTLS Handshake overhaul. There were longstanding issues with
4381 OpenSSL DTLS implementation, which were making it impossible for
4382 RFC 4347 compliant client to communicate with OpenSSL server.
4383 Unfortunately just fixing these incompatibilities would "cut off"
4384 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
4385 server keeps tolerating non RFC compliant syntax. The opposite is
4386 not true, 0.9.8f client can not communicate with earlier server.
4387 This update even addresses CVE-2007-4995.
4390 *) Changes to avoid need for function casts in OpenSSL: some compilers
4391 (gcc 4.2 and later) reject their use.
4392 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
4395 *) Add RFC4507 support to OpenSSL. This includes the corrections in
4396 RFC4507bis. The encrypted ticket format is an encrypted encoded
4397 SSL_SESSION structure, that way new session features are automatically
4400 If a client application caches session in an SSL_SESSION structure
4401 support is transparent because tickets are now stored in the encoded
4404 The SSL_CTX structure automatically generates keys for ticket
4405 protection in servers so again support should be possible
4406 with no application modification.
4408 If a client or server wishes to disable RFC4507 support then the option
4409 SSL_OP_NO_TICKET can be set.
4411 Add a TLS extension debugging callback to allow the contents of any client
4412 or server extensions to be examined.
4414 This work was sponsored by Google.
4417 *) Add initial support for TLS extensions, specifically for the server_name
4418 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
4419 have new members for a host name. The SSL data structure has an
4420 additional member SSL_CTX *initial_ctx so that new sessions can be
4421 stored in that context to allow for session resumption, even after the
4422 SSL has been switched to a new SSL_CTX in reaction to a client's
4423 server_name extension.
4425 New functions (subject to change):
4427 SSL_get_servername()
4428 SSL_get_servername_type()
4431 New CTRL codes and macros (subject to change):
4433 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
4434 - SSL_CTX_set_tlsext_servername_callback()
4435 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
4436 - SSL_CTX_set_tlsext_servername_arg()
4437 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
4439 openssl s_client has a new '-servername ...' option.
4441 openssl s_server has new options '-servername_host ...', '-cert2 ...',
4442 '-key2 ...', '-servername_fatal' (subject to change). This allows
4443 testing the HostName extension for a specific single host name ('-cert'
4444 and '-key' remain fallbacks for handshakes without HostName
4445 negotiation). If the unrecognized_name alert has to be sent, this by
4446 default is a warning; it becomes fatal with the '-servername_fatal'
4449 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
4451 *) Add AES and SSE2 assembly language support to VC++ build.
4454 *) Mitigate attack on final subtraction in Montgomery reduction.
4457 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
4458 (which previously caused an internal error).
4461 *) Squeeze another 10% out of IGE mode when in != out.
4464 *) AES IGE mode speedup.
4465 [Dean Gaudet (Google)]
4467 *) Add the Korean symmetric 128-bit cipher SEED (see
4468 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
4469 add SEED ciphersuites from RFC 4162:
4471 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
4472 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
4473 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
4474 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
4476 To minimize changes between patchlevels in the OpenSSL 0.9.8
4477 series, SEED remains excluded from compilation unless OpenSSL
4478 is configured with 'enable-seed'.
4479 [KISA, Bodo Moeller]
4481 *) Mitigate branch prediction attacks, which can be practical if a
4482 single processor is shared, allowing a spy process to extract
4483 information. For detailed background information, see
4484 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
4485 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
4486 and Necessary Software Countermeasures"). The core of the change
4487 are new versions BN_div_no_branch() and
4488 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
4489 respectively, which are slower, but avoid the security-relevant
4490 conditional branches. These are automatically called by BN_div()
4491 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
4492 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
4493 remove a conditional branch.
4495 BN_FLG_CONSTTIME is the new name for the previous
4496 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
4497 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
4498 in the exponent causes BN_mod_exp_mont() to use the alternative
4499 implementation in BN_mod_exp_mont_consttime().) The old name
4500 remains as a deprecated alias.
4502 Similarly, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
4503 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
4504 constant-time implementations for more than just exponentiation.
4505 Here too the old name is kept as a deprecated alias.
4507 BN_BLINDING_new() will now use BN_dup() for the modulus so that
4508 the BN_BLINDING structure gets an independent copy of the
4509 modulus. This means that the previous "BIGNUM *m" argument to
4510 BN_BLINDING_new() and to BN_BLINDING_create_param() now
4511 essentially becomes "const BIGNUM *m", although we can't actually
4512 change this in the header file before 0.9.9. It allows
4513 RSA_setup_blinding() to use BN_with_flags() on the modulus to
4514 enable BN_FLG_CONSTTIME.
4516 [Matthew D Wood (Intel Corp)]
4518 *) In the SSL/TLS server implementation, be strict about session ID
4519 context matching (which matters if an application uses a single
4520 external cache for different purposes). Previously,
4521 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
4522 set. This did ensure strict client verification, but meant that,
4523 with applications using a single external cache for quite
4524 different requirements, clients could circumvent ciphersuite
4525 restrictions for a given session ID context by starting a session
4526 in a different context.
4529 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
4530 a ciphersuite string such as "DEFAULT:RSA" cannot enable
4531 authentication-only ciphersuites.
4534 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
4535 not complete and could lead to a possible single byte overflow
4536 (CVE-2007-5135) [Ben Laurie]
4538 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
4540 *) Since AES128 and AES256 (and similarly Camellia128 and
4541 Camellia256) share a single mask bit in the logic of
4542 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
4543 kludge to work properly if AES128 is available and AES256 isn't
4544 (or if Camellia128 is available and Camellia256 isn't).
4547 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
4548 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
4549 When a point or a seed is encoded in a BIT STRING, we need to
4550 prevent the removal of trailing zero bits to get the proper DER
4551 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
4552 of a NamedBitList, for which trailing 0 bits need to be removed.)
4555 *) Have SSL/TLS server implementation tolerate "mismatched" record
4556 protocol version while receiving ClientHello even if the
4557 ClientHello is fragmented. (The server can't insist on the
4558 particular protocol version it has chosen before the ServerHello
4559 message has informed the client about his choice.)
4562 *) Add RFC 3779 support.
4563 [Rob Austein for ARIN, Ben Laurie]
4565 *) Load error codes if they are not already present instead of using a
4566 static variable. This allows them to be cleanly unloaded and reloaded.
4567 Improve header file function name parsing.
4570 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
4571 or CAPABILITY handshake as required by RFCs.
4574 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
4576 *) Introduce limits to prevent malicious keys being able to
4577 cause a denial of service. (CVE-2006-2940)
4578 [Steve Henson, Bodo Moeller]
4580 *) Fix ASN.1 parsing of certain invalid structures that can result
4581 in a denial of service. (CVE-2006-2937) [Steve Henson]
4583 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
4584 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
4586 *) Fix SSL client code which could crash if connecting to a
4587 malicious SSLv2 server. (CVE-2006-4343)
4588 [Tavis Ormandy and Will Drewry, Google Security Team]
4590 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
4591 match only those. Before that, "AES256-SHA" would be interpreted
4592 as a pattern and match "AES128-SHA" too (since AES128-SHA got
4593 the same strength classification in 0.9.7h) as we currently only
4594 have a single AES bit in the ciphersuite description bitmap.
4595 That change, however, also applied to ciphersuite strings such as
4596 "RC4-MD5" that intentionally matched multiple ciphersuites --
4597 namely, SSL 2.0 ciphersuites in addition to the more common ones
4598 from SSL 3.0/TLS 1.0.
4600 So we change the selection algorithm again: Naming an explicit
4601 ciphersuite selects this one ciphersuite, and any other similar
4602 ciphersuite (same bitmap) from *other* protocol versions.
4603 Thus, "RC4-MD5" again will properly select both the SSL 2.0
4604 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
4606 Since SSL 2.0 does not have any ciphersuites for which the
4607 128/256 bit distinction would be relevant, this works for now.
4608 The proper fix will be to use different bits for AES128 and
4609 AES256, which would have avoided the problems from the beginning;
4610 however, bits are scarce, so we can only do this in a new release
4611 (not just a patchlevel) when we can change the SSL_CIPHER
4612 definition to split the single 'unsigned long mask' bitmap into
4613 multiple values to extend the available space.
4617 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
4619 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
4620 (CVE-2006-4339) [Ben Laurie and Google Security Team]
4622 *) Add AES IGE and biIGE modes.
4625 *) Change the Unix randomness entropy gathering to use poll() when
4626 possible instead of select(), since the latter has some
4627 undesirable limitations.
4628 [Darryl Miles via Richard Levitte and Bodo Moeller]
4630 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
4631 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
4632 cannot be implicitly activated as part of, e.g., the "AES" alias.
4633 However, please upgrade to OpenSSL 0.9.9[-dev] for
4634 non-experimental use of the ECC ciphersuites to get TLS extension
4635 support, which is required for curve and point format negotiation
4636 to avoid potential handshake problems.
4639 *) Disable rogue ciphersuites:
4641 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
4642 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
4643 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
4645 The latter two were purportedly from
4646 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
4649 Also deactivate the remaining ciphersuites from
4650 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
4651 unofficial, and the ID has long expired.
4654 *) Fix RSA blinding Heisenbug (problems sometimes occurred on
4655 dual-core machines) and other potential thread-safety issues.
4658 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
4659 versions), which is now available for royalty-free use
4660 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
4661 Also, add Camellia TLS ciphersuites from RFC 4132.
4663 To minimize changes between patchlevels in the OpenSSL 0.9.8
4664 series, Camellia remains excluded from compilation unless OpenSSL
4665 is configured with 'enable-camellia'.
4668 *) Disable the padding bug check when compression is in use. The padding
4669 bug check assumes the first packet is of even length, this is not
4670 necessarily true if compresssion is enabled and can result in false
4671 positives causing handshake failure. The actual bug test is ancient
4672 code so it is hoped that implementations will either have fixed it by
4673 now or any which still have the bug do not support compression.
4676 Changes between 0.9.8a and 0.9.8b [04 May 2006]
4678 *) When applying a cipher rule check to see if string match is an explicit
4679 cipher suite and only match that one cipher suite if it is.
4682 *) Link in manifests for VC++ if needed.
4683 [Austin Ziegler <halostatue@gmail.com>]
4685 *) Update support for ECC-based TLS ciphersuites according to
4686 draft-ietf-tls-ecc-12.txt with proposed changes (but without
4687 TLS extensions, which are supported starting with the 0.9.9
4688 branch, not in the OpenSSL 0.9.8 branch).
4691 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
4692 opaque EVP_CIPHER_CTX handling.
4695 *) Fixes and enhancements to zlib compression code. We now only use
4696 "zlib1.dll" and use the default __cdecl calling convention on Win32
4697 to conform with the standards mentioned here:
4698 http://www.zlib.net/DLL_FAQ.txt
4699 Static zlib linking now works on Windows and the new --with-zlib-include
4700 --with-zlib-lib options to Configure can be used to supply the location
4701 of the headers and library. Gracefully handle case where zlib library
4705 *) Several fixes and enhancements to the OID generation code. The old code
4706 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
4707 handle numbers larger than ULONG_MAX, truncated printing and had a
4708 non standard OBJ_obj2txt() behaviour.
4711 *) Add support for building of engines under engine/ as shared libraries
4712 under VC++ build system.
4715 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
4716 Hopefully, we will not see any false combination of paths any more.
4719 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
4721 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
4722 (part of SSL_OP_ALL). This option used to disable the
4723 countermeasure against man-in-the-middle protocol-version
4724 rollback in the SSL 2.0 server implementation, which is a bad
4725 idea. (CVE-2005-2969)
4727 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
4728 for Information Security, National Institute of Advanced Industrial
4729 Science and Technology [AIST], Japan)]
4731 *) Add two function to clear and return the verify parameter flags.
4734 *) Keep cipherlists sorted in the source instead of sorting them at
4735 runtime, thus removing the need for a lock.
4738 *) Avoid some small subgroup attacks in Diffie-Hellman.
4739 [Nick Mathewson and Ben Laurie]
4741 *) Add functions for well-known primes.
4744 *) Extended Windows CE support.
4745 [Satoshi Nakamura and Andy Polyakov]
4747 *) Initialize SSL_METHOD structures at compile time instead of during
4748 runtime, thus removing the need for a lock.
4751 *) Make PKCS7_decrypt() work even if no certificate is supplied by
4752 attempting to decrypt each encrypted key in turn. Add support to
4756 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
4758 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
4761 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
4764 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
4765 key into the same file any more.
4768 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
4771 *) Add -utf8 command line and config file option to 'ca'.
4772 [Stefan <stf@udoma.org]
4774 *) Removed the macro des_crypt(), as it seems to conflict with some
4775 libraries. Use DES_crypt().
4778 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
4779 involves renaming the source and generated shared-libs for
4780 both. The engines will accept the corrected or legacy ids
4781 ('ncipher' and '4758_cca' respectively) when binding. NB,
4782 this only applies when building 'shared'.
4783 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
4785 *) Add attribute functions to EVP_PKEY structure. Modify
4786 PKCS12_create() to recognize a CSP name attribute and
4787 use it. Make -CSP option work again in pkcs12 utility.
4790 *) Add new functionality to the bn blinding code:
4791 - automatic re-creation of the BN_BLINDING parameters after
4792 a fixed number of uses (currently 32)
4793 - add new function for parameter creation
4794 - introduce flags to control the update behaviour of the
4795 BN_BLINDING parameters
4796 - hide BN_BLINDING structure
4797 Add a second BN_BLINDING slot to the RSA structure to improve
4798 performance when a single RSA object is shared among several
4802 *) Add support for DTLS.
4803 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
4805 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
4806 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
4809 *) Remove buggy and incomplete DH cert support from
4810 ssl/ssl_rsa.c and ssl/s3_both.c
4813 *) Use SHA-1 instead of MD5 as the default digest algorithm for
4814 the apps/openssl applications.
4817 *) Compile clean with "-Wall -Wmissing-prototypes
4818 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
4819 DEBUG_SAFESTACK must also be set.
4822 *) Change ./Configure so that certain algorithms can be disabled by default.
4823 The new counterpiece to "no-xxx" is "enable-xxx".
4825 The patented RC5 and MDC2 algorithms will now be disabled unless
4826 "enable-rc5" and "enable-mdc2", respectively, are specified.
4828 (IDEA remains enabled despite being patented. This is because IDEA
4829 is frequently required for interoperability, and there is no license
4830 fee for non-commercial use. As before, "no-idea" can be used to
4831 avoid this algorithm.)
4835 *) Add processing of proxy certificates (see RFC 3820). This work was
4836 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
4837 EGEE (Enabling Grids for E-science in Europe).
4840 *) RC4 performance overhaul on modern architectures/implementations, such
4841 as Intel P4, IA-64 and AMD64.
4844 *) New utility extract-section.pl. This can be used specify an alternative
4845 section number in a pod file instead of having to treat each file as
4846 a separate case in Makefile. This can be done by adding two lines to the
4849 =for comment openssl_section:XXX
4851 The blank line is mandatory.
4855 *) New arguments -certform, -keyform and -pass for s_client and s_server
4856 to allow alternative format key and certificate files and passphrase
4860 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
4861 update associated structures and add various utility functions.
4863 Add new policy related verify parameters, include policy checking in
4864 standard verify code. Enhance 'smime' application with extra parameters
4865 to support policy checking and print out.
4868 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
4869 Nehemiah processors. These extensions support AES encryption in hardware
4870 as well as RNG (though RNG support is currently disabled).
4871 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
4873 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
4876 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
4877 [Andy Polyakov and a number of other people]
4879 *) Improved PowerPC platform support. Most notably BIGNUM assembler
4880 implementation contributed by IBM.
4881 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
4883 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
4884 exponent rather than 'unsigned long'. There is a corresponding change to
4885 the new 'rsa_keygen' element of the RSA_METHOD structure.
4886 [Jelte Jansen, Geoff Thorpe]
4888 *) Functionality for creating the initial serial number file is now
4889 moved from CA.pl to the 'ca' utility with a new option -create_serial.
4891 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
4892 number file to 1, which is bound to cause problems. To avoid
4893 the problems while respecting compatibility between different 0.9.7
4894 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
4895 CA.pl for serial number initialization. With the new release 0.9.8,
4896 we can fix the problem directly in the 'ca' utility.)
4899 *) Reduced header interdepencies by declaring more opaque objects in
4900 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
4901 give fewer recursive includes, which could break lazy source code - so
4902 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
4903 developers should define this symbol when building and using openssl to
4904 ensure they track the recommended behaviour, interfaces, [etc], but
4905 backwards-compatible behaviour prevails when this isn't defined.
4908 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
4911 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
4912 This will generate a random key of the appropriate length based on the
4913 cipher context. The EVP_CIPHER can provide its own random key generation
4914 routine to support keys of a specific form. This is used in the des and
4915 3des routines to generate a key of the correct parity. Update S/MIME
4916 code to use new functions and hence generate correct parity DES keys.
4917 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
4918 valid (weak or incorrect parity).
4921 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
4922 as looking them up. This is useful when the verified structure may contain
4923 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
4924 present unless the new PKCS7_NO_CRL flag is asserted.
4927 *) Extend ASN1 oid configuration module. It now additionally accepts the
4930 shortName = some long name, 1.2.3.4
4933 *) Reimplemented the BN_CTX implementation. There is now no more static
4934 limitation on the number of variables it can handle nor the depth of the
4935 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
4936 information can now expand as required, and rather than having a single
4937 static array of bignums, BN_CTX now uses a linked-list of such arrays
4938 allowing it to expand on demand whilst maintaining the usefulness of
4939 BN_CTX's "bundling".
4942 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
4943 to allow all RSA operations to function using a single BN_CTX.
4946 *) Preliminary support for certificate policy evaluation and checking. This
4947 is initially intended to pass the tests outlined in "Conformance Testing
4948 of Relying Party Client Certificate Path Processing Logic" v1.07.
4951 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
4952 remained unused and not that useful. A variety of other little bignum
4953 tweaks and fixes have also been made continuing on from the audit (see
4957 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
4958 associated ASN1, EVP and SSL functions and old ASN1 macros.
4961 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
4962 and this should never fail. So the return value from the use of
4963 BN_set_word() (which can fail due to needless expansion) is now deprecated;
4964 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
4967 *) BN_CTX_get() should return zero-valued bignums, providing the same
4968 initialised value as BN_new().
4969 [Geoff Thorpe, suggested by Ulf Möller]
4971 *) Support for inhibitAnyPolicy certificate extension.
4974 *) An audit of the BIGNUM code is underway, for which debugging code is
4975 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
4976 is considered valid when processing BIGNUMs, and causes execution to
4977 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
4978 further steps are taken to deliberately pollute unused data in BIGNUM
4979 structures to try and expose faulty code further on. For now, openssl will
4980 (in its default mode of operation) continue to tolerate the inconsistent
4981 forms that it has tolerated in the past, but authors and packagers should
4982 consider trying openssl and their own applications when compiled with
4983 these debugging symbols defined. It will help highlight potential bugs in
4984 their own code, and will improve the test coverage for OpenSSL itself. At
4985 some point, these tighter rules will become openssl's default to improve
4986 maintainability, though the assert()s and other overheads will remain only
4987 in debugging configurations. See bn.h for more details.
4988 [Geoff Thorpe, Nils Larsch, Ulf Möller]
4990 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
4991 that can only be obtained through BN_CTX_new() (which implicitly
4992 initialises it). The presence of this function only made it possible
4993 to overwrite an existing structure (and cause memory leaks).
4996 *) Because of the callback-based approach for implementing LHASH as a
4997 template type, lh_insert() adds opaque objects to hash-tables and
4998 lh_doall() or lh_doall_arg() are typically used with a destructor callback
4999 to clean up those corresponding objects before destroying the hash table
5000 (and losing the object pointers). So some over-zealous constifications in
5001 LHASH have been relaxed so that lh_insert() does not take (nor store) the
5002 objects as "const" and the lh_doall[_arg] callback wrappers are not
5003 prototyped to have "const" restrictions on the object pointers they are
5004 given (and so aren't required to cast them away any more).
5007 *) The tmdiff.h API was so ugly and minimal that our own timing utility
5008 (speed) prefers to use its own implementation. The two implementations
5009 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
5010 its object type properly exposed (MS_TM) instead of casting to/from "char
5011 *". This may still change yet if someone realises MS_TM and "ms_time_***"
5012 aren't necessarily the greatest nomenclatures - but this is what was used
5013 internally to the implementation so I've used that for now.
5016 *) Ensure that deprecated functions do not get compiled when
5017 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
5018 the self-tests were still using deprecated key-generation functions so
5019 these have been updated also.
5022 *) Reorganise PKCS#7 code to separate the digest location functionality
5023 into PKCS7_find_digest(), digest addition into PKCS7_bio_add_digest().
5024 New function PKCS7_set_digest() to set the digest type for PKCS#7
5025 digestedData type. Add additional code to correctly generate the
5026 digestedData type and add support for this type in PKCS7 initialization
5030 *) New function PKCS7_set0_type_other() this initializes a PKCS7
5031 structure of type "other".
5034 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
5035 sure the loop does correctly stop and breaking ("division by zero")
5036 modulus operations are not performed. The (pre-generated) prime
5037 table crypto/bn/bn_prime.h was already correct, but it could not be
5038 re-generated on some platforms because of the "division by zero"
5039 situation in the script.
5040 [Ralf S. Engelschall]
5042 *) Update support for ECC-based TLS ciphersuites according to
5043 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
5044 SHA-1 now is only used for "small" curves (where the
5045 representation of a field element takes up to 24 bytes); for
5046 larger curves, the field element resulting from ECDH is directly
5047 used as premaster secret.
5048 [Douglas Stebila (Sun Microsystems Laboratories)]
5050 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
5051 curve secp160r1 to the tests.
5052 [Douglas Stebila (Sun Microsystems Laboratories)]
5054 *) Add the possibility to load symbols globally with DSO.
5055 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
5057 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
5058 control of the error stack.
5061 *) Add support for STORE in ENGINE.
5064 *) Add the STORE type. The intention is to provide a common interface
5065 to certificate and key stores, be they simple file-based stores, or
5066 HSM-type store, or LDAP stores, or...
5067 NOTE: The code is currently UNTESTED and isn't really used anywhere.
5070 *) Add a generic structure called OPENSSL_ITEM. This can be used to
5071 pass a list of arguments to any function as well as provide a way
5072 for a function to pass data back to the caller.
5075 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
5076 works like BUF_strdup() but can be used to duplicate a portion of
5077 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
5081 *) Add the function sk_find_ex() which works like sk_find(), but will
5082 return an index to an element even if an exact match couldn't be
5083 found. The index is guaranteed to point at the element where the
5084 searched-for key would be inserted to preserve sorting order.
5087 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
5088 takes an extra flags argument for optional functionality. Currently,
5089 the following flags are defined:
5091 OBJ_BSEARCH_VALUE_ON_NOMATCH
5092 This one gets OBJ_bsearch_ex() to return a pointer to the first
5093 element where the comparing function returns a negative or zero
5096 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
5097 This one gets OBJ_bsearch_ex() to return a pointer to the first
5098 element where the comparing function returns zero. This is useful
5099 if there are more than one element where the comparing function
5103 *) Make it possible to create self-signed certificates with 'openssl ca'
5104 in such a way that the self-signed certificate becomes part of the
5105 CA database and uses the same mechanisms for serial number generation
5106 as all other certificate signing. The new flag '-selfsign' enables
5107 this functionality. Adapt CA.sh and CA.pl.in.
5110 *) Add functionality to check the public key of a certificate request
5111 against a given private. This is useful to check that a certificate
5112 request can be signed by that key (self-signing).
5115 *) Make it possible to have multiple active certificates with the same
5116 subject in the CA index file. This is done only if the keyword
5117 'unique_subject' is set to 'no' in the main CA section (default
5118 if 'CA_default') of the configuration file. The value is saved
5119 with the database itself in a separate index attribute file,
5120 named like the index file with '.attr' appended to the name.
5123 *) Generate muti valued AVAs using '+' notation in config files for
5127 *) Support for nameConstraints certificate extension.
5130 *) Support for policyConstraints certificate extension.
5133 *) Support for policyMappings certificate extension.
5136 *) Make sure the default DSA_METHOD implementation only uses its
5137 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
5138 and change its own handlers to be NULL so as to remove unnecessary
5139 indirection. This lets alternative implementations fallback to the
5140 default implementation more easily.
5143 *) Support for directoryName in GeneralName related extensions
5147 *) Make it possible to link applications using Makefile.shared.
5148 Make that possible even when linking against static libraries!
5151 *) Support for single pass processing for S/MIME signing. This now
5152 means that S/MIME signing can be done from a pipe, in addition
5153 cleartext signing (multipart/signed type) is effectively streaming
5154 and the signed data does not need to be all held in memory.
5156 This is done with a new flag PKCS7_STREAM. When this flag is set
5157 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
5158 is done after the data is output (and digests calculated) in
5159 SMIME_write_PKCS7().
5162 *) Add full support for -rpath/-R, both in shared libraries and
5163 applications, at least on the platforms where it's known how
5167 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
5168 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
5169 will now compute a table of multiples of the generator that
5170 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
5171 faster (notably in the case of a single point multiplication,
5172 scalar * generator).
5173 [Nils Larsch, Bodo Moeller]
5175 *) IPv6 support for certificate extensions. The various extensions
5176 which use the IP:a.b.c.d can now take IPv6 addresses using the
5177 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
5181 *) Added an ENGINE that implements RSA by performing private key
5182 exponentiations with the GMP library. The conversions to and from
5183 GMP's mpz_t format aren't optimised nor are any montgomery forms
5184 cached, and on x86 it appears OpenSSL's own performance has caught up.
5185 However there are likely to be other architectures where GMP could
5186 provide a boost. This ENGINE is not built in by default, but it can be
5187 specified at Configure time and should be accompanied by the necessary
5188 linker additions, eg;
5189 ./config -DOPENSSL_USE_GMP -lgmp
5192 *) "openssl engine" will not display ENGINE/DSO load failure errors when
5193 testing availability of engines with "-t" - the old behaviour is
5194 produced by increasing the feature's verbosity with "-tt".
5197 *) ECDSA routines: under certain error conditions uninitialized BN objects
5198 could be freed. Solution: make sure initialization is performed early
5199 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
5203 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
5204 and DH_METHOD (eg. by ENGINE implementations) to override the normal
5205 software implementations. For DSA and DH, parameter generation can
5206 also be overridden by providing the appropriate method callbacks.
5209 *) Change the "progress" mechanism used in key-generation and
5210 primality testing to functions that take a new BN_GENCB pointer in
5211 place of callback/argument pairs. The new API functions have "_ex"
5212 postfixes and the older functions are reimplemented as wrappers for
5213 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
5214 declarations of the old functions to help (graceful) attempts to
5215 migrate to the new functions. Also, the new key-generation API
5216 functions operate on a caller-supplied key-structure and return
5217 success/failure rather than returning a key or NULL - this is to
5218 help make "keygen" another member function of RSA_METHOD etc.
5220 Example for using the new callback interface:
5222 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
5226 BN_GENCB_set(&my_cb, my_callback, my_arg);
5228 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
5229 /* For the meaning of a, b in calls to my_callback(), see the
5230 * documentation of the function that calls the callback.
5231 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
5232 * my_callback should return 1 if it wants BN_is_prime_ex()
5233 * to continue, or 0 to stop.
5238 *) Change the ZLIB compression method to be stateful, and make it
5239 available to TLS with the number defined in
5240 draft-ietf-tls-compression-04.txt.
5243 *) Add the ASN.1 structures and functions for CertificatePair, which
5244 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
5246 CertificatePair ::= SEQUENCE {
5247 forward [0] Certificate OPTIONAL,
5248 reverse [1] Certificate OPTIONAL,
5249 -- at least one of the pair shall be present -- }
5251 Also implement the PEM functions to read and write certificate
5252 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
5254 This needed to be defined, mostly for the sake of the LDAP
5255 attribute crossCertificatePair, but may prove useful elsewhere as
5259 *) Make it possible to inhibit symlinking of shared libraries in
5260 Makefile.shared, for Cygwin's sake.
5263 *) Extend the BIGNUM API by creating a function
5264 void BN_set_negative(BIGNUM *a, int neg);
5265 and a macro that behave like
5266 int BN_is_negative(const BIGNUM *a);
5268 to avoid the need to access 'a->neg' directly in applications.
5271 *) Implement fast modular reduction for pseudo-Mersenne primes
5272 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
5273 EC_GROUP_new_curve_GFp() will now automatically use this
5275 [Nils Larsch <nla@trustcenter.de>]
5277 *) Add new lock type (CRYPTO_LOCK_BN).
5280 *) Change the ENGINE framework to automatically load engines
5281 dynamically from specific directories unless they could be
5282 found to already be built in or loaded. Move all the
5283 current engines except for the cryptodev one to a new
5285 The engines in engines/ are built as shared libraries if
5286 the "shared" options was given to ./Configure or ./config.
5287 Otherwise, they are inserted in libcrypto.a.
5288 /usr/local/ssl/engines is the default directory for dynamic
5289 engines, but that can be overridden at configure time through
5290 the usual use of --prefix and/or --openssldir, and at run
5291 time with the environment variable OPENSSL_ENGINES.
5292 [Geoff Thorpe and Richard Levitte]
5294 *) Add Makefile.shared, a helper makefile to build shared
5295 libraries. Adapt Makefile.org.
5298 *) Add version info to Win32 DLLs.
5299 [Peter 'Luna' Runestig" <peter@runestig.com>]
5301 *) Add new 'medium level' PKCS#12 API. Certificates and keys
5302 can be added using this API to created arbitrary PKCS#12
5303 files while avoiding the low level API.
5305 New options to PKCS12_create(), key or cert can be NULL and
5306 will then be omitted from the output file. The encryption
5307 algorithm NIDs can be set to -1 for no encryption, the mac
5308 iteration count can be set to 0 to omit the mac.
5310 Enhance pkcs12 utility by making the -nokeys and -nocerts
5311 options work when creating a PKCS#12 file. New option -nomac
5312 to omit the mac, NONE can be set for an encryption algorithm.
5313 New code is modified to use the enhanced PKCS12_create()
5314 instead of the low level API.
5317 *) Extend ASN1 encoder to support indefinite length constructed
5318 encoding. This can output sequences tags and octet strings in
5319 this form. Modify pk7_asn1.c to support indefinite length
5320 encoding. This is experimental and needs additional code to
5321 be useful, such as an ASN1 bio and some enhanced streaming
5324 Extend template encode functionality so that tagging is passed
5325 down to the template encoder.
5328 *) Let 'openssl req' fail if an argument to '-newkey' is not
5329 recognized instead of using RSA as a default.
5332 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
5333 As these are not official, they are not included in "ALL";
5334 the "ECCdraft" ciphersuite group alias can be used to select them.
5335 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
5337 *) Add ECDH engine support.
5338 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
5340 *) Add ECDH in new directory crypto/ecdh/.
5341 [Douglas Stebila (Sun Microsystems Laboratories)]
5343 *) Let BN_rand_range() abort with an error after 100 iterations
5344 without success (which indicates a broken PRNG).
5347 *) Change BN_mod_sqrt() so that it verifies that the input value
5348 is really the square of the return value. (Previously,
5349 BN_mod_sqrt would show GIGO behaviour.)
5352 *) Add named elliptic curves over binary fields from X9.62, SECG,
5353 and WAP/WTLS; add OIDs that were still missing.
5355 [Sheueling Chang Shantz and Douglas Stebila
5356 (Sun Microsystems Laboratories)]
5358 *) Extend the EC library for elliptic curves over binary fields
5359 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
5362 EC_GF2m_simple_method
5366 EC_GROUP_new_curve_GF2m
5367 EC_GROUP_set_curve_GF2m
5368 EC_GROUP_get_curve_GF2m
5369 EC_POINT_set_affine_coordinates_GF2m
5370 EC_POINT_get_affine_coordinates_GF2m
5371 EC_POINT_set_compressed_coordinates_GF2m
5373 Point compression for binary fields is disabled by default for
5374 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
5377 As binary polynomials are represented as BIGNUMs, various members
5378 of the EC_GROUP and EC_POINT data structures can be shared
5379 between the implementations for prime fields and binary fields;
5380 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
5381 are essentially identical to their ..._GFp counterparts.
5382 (For simplicity, the '..._GFp' prefix has been dropped from
5383 various internal method names.)
5385 An internal 'field_div' method (similar to 'field_mul' and
5386 'field_sqr') has been added; this is used only for binary fields.
5388 [Sheueling Chang Shantz and Douglas Stebila
5389 (Sun Microsystems Laboratories)]
5391 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
5392 through methods ('mul', 'precompute_mult').
5394 The generic implementations (now internally called 'ec_wNAF_mul'
5395 and 'ec_wNAF_precomputed_mult') remain the default if these
5396 methods are undefined.
5398 [Sheueling Chang Shantz and Douglas Stebila
5399 (Sun Microsystems Laboratories)]
5401 *) New function EC_GROUP_get_degree, which is defined through
5402 EC_METHOD. For curves over prime fields, this returns the bit
5403 length of the modulus.
5405 [Sheueling Chang Shantz and Douglas Stebila
5406 (Sun Microsystems Laboratories)]
5408 *) New functions EC_GROUP_dup, EC_POINT_dup.
5409 (These simply call ..._new and ..._copy).
5411 [Sheueling Chang Shantz and Douglas Stebila
5412 (Sun Microsystems Laboratories)]
5414 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
5415 Polynomials are represented as BIGNUMs (where the sign bit is not
5416 used) in the following functions [macros]:
5419 BN_GF2m_sub [= BN_GF2m_add]
5420 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
5421 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
5422 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
5424 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
5425 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
5426 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
5427 BN_GF2m_cmp [= BN_ucmp]
5429 (Note that only the 'mod' functions are actually for fields GF(2^m).
5430 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
5432 For some functions, an the irreducible polynomial defining a
5433 field can be given as an 'unsigned int[]' with strictly
5434 decreasing elements giving the indices of those bits that are set;
5435 i.e., p[] represents the polynomial
5436 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
5438 p[0] > p[1] > ... > p[k] = 0.
5439 This applies to the following functions:
5444 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
5445 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
5447 BN_GF2m_mod_sqrt_arr
5448 BN_GF2m_mod_solve_quad_arr
5452 Conversion can be performed by the following functions:
5457 bntest.c has additional tests for binary polynomial arithmetic.
5459 Two implementations for BN_GF2m_mod_div() are available.
5460 The default algorithm simply uses BN_GF2m_mod_inv() and
5461 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
5462 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
5463 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
5465 [Sheueling Chang Shantz and Douglas Stebila
5466 (Sun Microsystems Laboratories)]
5468 *) Add new error code 'ERR_R_DISABLED' that can be used when some
5469 functionality is disabled at compile-time.
5470 [Douglas Stebila <douglas.stebila@sun.com>]
5472 *) Change default behaviour of 'openssl asn1parse' so that more
5473 information is visible when viewing, e.g., a certificate:
5475 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
5476 mode the content of non-printable OCTET STRINGs is output in a
5477 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
5478 avoid the appearance of a printable string.
5479 [Nils Larsch <nla@trustcenter.de>]
5481 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
5483 EC_GROUP_set_asn1_flag()
5484 EC_GROUP_get_asn1_flag()
5485 EC_GROUP_set_point_conversion_form()
5486 EC_GROUP_get_point_conversion_form()
5487 These control ASN1 encoding details:
5488 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
5489 has been set to OPENSSL_EC_NAMED_CURVE.
5490 - Points are encoded in uncompressed form by default; options for
5491 asn1_for are as for point2oct, namely
5492 POINT_CONVERSION_COMPRESSED
5493 POINT_CONVERSION_UNCOMPRESSED
5494 POINT_CONVERSION_HYBRID
5496 Also add 'seed' and 'seed_len' members to EC_GROUP with access
5499 EC_GROUP_get0_seed()
5500 EC_GROUP_get_seed_len()
5501 This is used only for ASN1 purposes (so far).
5502 [Nils Larsch <nla@trustcenter.de>]
5504 *) Add 'field_type' member to EC_METHOD, which holds the NID
5505 of the appropriate field type OID. The new function
5506 EC_METHOD_get_field_type() returns this value.
5507 [Nils Larsch <nla@trustcenter.de>]
5512 EC_POINT_point2hex()
5513 EC_POINT_hex2point()
5514 providing useful interfaces to EC_POINT_point2oct() and
5515 EC_POINT_oct2point().
5516 [Nils Larsch <nla@trustcenter.de>]
5518 *) Change internals of the EC library so that the functions
5519 EC_GROUP_set_generator()
5520 EC_GROUP_get_generator()
5521 EC_GROUP_get_order()
5522 EC_GROUP_get_cofactor()
5523 are implemented directly in crypto/ec/ec_lib.c and not dispatched
5524 to methods, which would lead to unnecessary code duplication when
5525 adding different types of curves.
5526 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
5528 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
5529 arithmetic, and such that modified wNAFs are generated
5530 (which avoid length expansion in many cases).
5533 *) Add a function EC_GROUP_check_discriminant() (defined via
5534 EC_METHOD) that verifies that the curve discriminant is non-zero.
5536 Add a function EC_GROUP_check() that makes some sanity tests
5537 on a EC_GROUP, its generator and order. This includes
5538 EC_GROUP_check_discriminant().
5539 [Nils Larsch <nla@trustcenter.de>]
5541 *) Add ECDSA in new directory crypto/ecdsa/.
5543 Add applications 'openssl ecparam' and 'openssl ecdsa'
5544 (these are based on 'openssl dsaparam' and 'openssl dsa').
5546 ECDSA support is also included in various other files across the
5547 library. Most notably,
5548 - 'openssl req' now has a '-newkey ecdsa:file' option;
5549 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
5550 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
5551 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
5552 them suitable for ECDSA where domain parameters must be
5553 extracted before the specific public key;
5554 - ECDSA engine support has been added.
5555 [Nils Larsch <nla@trustcenter.de>]
5557 *) Include some named elliptic curves, and add OIDs from X9.62,
5558 SECG, and WAP/WTLS. Each curve can be obtained from the new
5560 EC_GROUP_new_by_curve_name(),
5561 and the list of available named curves can be obtained with
5562 EC_get_builtin_curves().
5563 Also add a 'curve_name' member to EC_GROUP objects, which can be
5565 EC_GROUP_set_curve_name()
5566 EC_GROUP_get_curve_name()
5567 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
5569 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
5570 was actually never needed) and in BN_mul(). The removal in BN_mul()
5571 required a small change in bn_mul_part_recursive() and the addition
5572 of the functions bn_cmp_part_words(), bn_sub_part_words() and
5573 bn_add_part_words(), which do the same thing as bn_cmp_words(),
5574 bn_sub_words() and bn_add_words() except they take arrays with
5578 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
5580 *) Cleanse PEM buffers before freeing them since they may contain
5582 [Benjamin Bennett <ben@psc.edu>]
5584 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
5585 a ciphersuite string such as "DEFAULT:RSA" cannot enable
5586 authentication-only ciphersuites.
5589 *) Since AES128 and AES256 share a single mask bit in the logic of
5590 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
5591 kludge to work properly if AES128 is available and AES256 isn't.
5594 *) Expand security boundary to match 1.1.1 module.
5597 *) Remove redundant features: hash file source, editing of test vectors
5598 modify fipsld to use external fips_premain.c signature.
5601 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
5602 run algorithm test programs.
5605 *) Make algorithm test programs more tolerant of whitespace.
5608 *) Have SSL/TLS server implementation tolerate "mismatched" record
5609 protocol version while receiving ClientHello even if the
5610 ClientHello is fragmented. (The server can't insist on the
5611 particular protocol version it has chosen before the ServerHello
5612 message has informed the client about his choice.)
5615 *) Load error codes if they are not already present instead of using a
5616 static variable. This allows them to be cleanly unloaded and reloaded.
5619 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
5621 *) Introduce limits to prevent malicious keys being able to
5622 cause a denial of service. (CVE-2006-2940)
5623 [Steve Henson, Bodo Moeller]
5625 *) Fix ASN.1 parsing of certain invalid structures that can result
5626 in a denial of service. (CVE-2006-2937) [Steve Henson]
5628 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
5629 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
5631 *) Fix SSL client code which could crash if connecting to a
5632 malicious SSLv2 server. (CVE-2006-4343)
5633 [Tavis Ormandy and Will Drewry, Google Security Team]
5635 *) Change ciphersuite string processing so that an explicit
5636 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
5637 will no longer include "AES128-SHA"), and any other similar
5638 ciphersuite (same bitmap) from *other* protocol versions (so that
5639 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
5640 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
5641 changes from 0.9.8b and 0.9.8d.
5644 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
5646 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
5647 (CVE-2006-4339) [Ben Laurie and Google Security Team]
5649 *) Change the Unix randomness entropy gathering to use poll() when
5650 possible instead of select(), since the latter has some
5651 undesirable limitations.
5652 [Darryl Miles via Richard Levitte and Bodo Moeller]
5654 *) Disable rogue ciphersuites:
5656 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
5657 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
5658 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
5660 The latter two were purportedly from
5661 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
5664 Also deactive the remaining ciphersuites from
5665 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
5666 unofficial, and the ID has long expired.
5669 *) Fix RSA blinding Heisenbug (problems sometimes occurred on
5670 dual-core machines) and other potential thread-safety issues.
5673 Changes between 0.9.7i and 0.9.7j [04 May 2006]
5675 *) Adapt fipsld and the build system to link against the validated FIPS
5676 module in FIPS mode.
5679 *) Fixes for VC++ 2005 build under Windows.
5682 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
5683 from a Windows bash shell such as MSYS. It is autodetected from the
5684 "config" script when run from a VC++ environment. Modify standard VC++
5685 build to use fipscanister.o from the GNU make build.
5688 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
5690 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
5691 The value now differs depending on if you build for FIPS or not.
5692 BEWARE! A program linked with a shared FIPSed libcrypto can't be
5693 safely run with a non-FIPSed libcrypto, as it may crash because of
5694 the difference induced by this change.
5697 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
5699 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
5700 (part of SSL_OP_ALL). This option used to disable the
5701 countermeasure against man-in-the-middle protocol-version
5702 rollback in the SSL 2.0 server implementation, which is a bad
5703 idea. (CVE-2005-2969)
5705 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
5706 for Information Security, National Institute of Advanced Industrial
5707 Science and Technology [AIST], Japan)]
5709 *) Minimal support for X9.31 signatures and PSS padding modes. This is
5710 mainly for FIPS compliance and not fully integrated at this stage.
5713 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
5714 the exponentiation using a fixed-length exponent. (Otherwise,
5715 the information leaked through timing could expose the secret key
5716 after many signatures; cf. Bleichenbacher's attack on DSA with
5720 *) Make a new fixed-window mod_exp implementation the default for
5721 RSA, DSA, and DH private-key operations so that the sequence of
5722 squares and multiplies and the memory access pattern are
5723 independent of the particular secret key. This will mitigate
5724 cache-timing and potential related attacks.
5726 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
5727 and this is automatically used by BN_mod_exp_mont() if the new flag
5728 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
5729 will use this BN flag for private exponents unless the flag
5730 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
5731 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
5733 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
5735 *) Change the client implementation for SSLv23_method() and
5736 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
5737 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
5738 (Previously, the SSL 2.0 backwards compatible Client Hello
5739 message format would be used even with SSL_OP_NO_SSLv2.)
5742 *) Add support for smime-type MIME parameter in S/MIME messages which some
5746 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
5747 a threadsafe manner. Modify rsa code to use new function and add calls
5748 to dsa and dh code (which had race conditions before).
5751 *) Include the fixed error library code in the C error file definitions
5752 instead of fixing them up at runtime. This keeps the error code
5753 structures constant.
5756 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
5758 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
5761 *) Fixes for newer kerberos headers. NB: the casts are needed because
5762 the 'length' field is signed on one version and unsigned on another
5763 with no (?) obvious way to tell the difference, without these VC++
5764 complains. Also the "definition" of FAR (blank) is no longer included
5765 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
5766 some needed definitions.
5769 *) Undo Cygwin change.
5772 *) Added support for proxy certificates according to RFC 3820.
5773 Because they may be a security thread to unaware applications,
5774 they must be explicitly allowed in run-time. See
5775 docs/HOWTO/proxy_certificates.txt for further information.
5778 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
5780 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
5781 server and client random values. Previously
5782 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
5783 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
5785 This change has negligible security impact because:
5787 1. Server and client random values still have 24 bytes of pseudo random
5790 2. Server and client random values are sent in the clear in the initial
5793 3. The master secret is derived using the premaster secret (48 bytes in
5794 size for static RSA ciphersuites) as well as client server and random
5797 The OpenSSL team would like to thank the UK NISCC for bringing this issue
5800 [Stephen Henson, reported by UK NISCC]
5802 *) Use Windows randomness collection on Cygwin.
5805 *) Fix hang in EGD/PRNGD query when communication socket is closed
5806 prematurely by EGD/PRNGD.
5807 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
5809 *) Prompt for pass phrases when appropriate for PKCS12 input format.
5812 *) Back-port of selected performance improvements from development
5813 branch, as well as improved support for PowerPC platforms.
5816 *) Add lots of checks for memory allocation failure, error codes to indicate
5817 failure and freeing up memory if a failure occurs.
5818 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
5820 *) Add new -passin argument to dgst.
5823 *) Perform some character comparisons of different types in X509_NAME_cmp:
5824 this is needed for some certificates that re-encode DNs into UTF8Strings
5825 (in violation of RFC3280) and can't or won't issue name rollover
5829 *) Make an explicit check during certificate validation to see that
5830 the CA setting in each certificate on the chain is correct. As a
5831 side effect always do the following basic checks on extensions,
5832 not just when there's an associated purpose to the check:
5834 - if there is an unhandled critical extension (unless the user
5835 has chosen to ignore this fault)
5836 - if the path length has been exceeded (if one is set at all)
5837 - that certain extensions fit the associated purpose (if one has
5841 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
5843 *) Avoid a race condition when CRLs are checked in a multi threaded
5844 environment. This would happen due to the reordering of the revoked
5845 entries during signature checking and serial number lookup. Now the
5846 encoding is cached and the serial number sort performed under a lock.
5847 Add new STACK function sk_is_sorted().
5850 *) Add Delta CRL to the extension code.
5853 *) Various fixes to s3_pkt.c so alerts are sent properly.
5854 [David Holmes <d.holmes@f5.com>]
5856 *) Reduce the chances of duplicate issuer name and serial numbers (in
5857 violation of RFC3280) using the OpenSSL certificate creation utilities.
5858 This is done by creating a random 64 bit value for the initial serial
5859 number when a serial number file is created or when a self signed
5860 certificate is created using 'openssl req -x509'. The initial serial
5861 number file is created using 'openssl x509 -next_serial' in CA.pl
5862 rather than being initialized to 1.
5865 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
5867 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
5868 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
5869 [Joe Orton, Steve Henson]
5871 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
5873 [Joe Orton, Steve Henson]
5875 *) Make it possible to have multiple active certificates with the same
5876 subject in the CA index file. This is done only if the keyword
5877 'unique_subject' is set to 'no' in the main CA section (default
5878 if 'CA_default') of the configuration file. The value is saved
5879 with the database itself in a separate index attribute file,
5880 named like the index file with '.attr' appended to the name.
5883 *) X509 verify fixes. Disable broken certificate workarounds when
5884 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
5885 keyUsage extension present. Don't accept CRLs with unhandled critical
5886 extensions: since verify currently doesn't process CRL extensions this
5887 rejects a CRL with *any* critical extensions. Add new verify error codes
5891 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
5892 A clarification of RFC2560 will require the use of OCTET STRINGs and
5893 some implementations cannot handle the current raw format. Since OpenSSL
5894 copies and compares OCSP nonces as opaque blobs without any attempt at
5895 parsing them this should not create any compatibility issues.
5898 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
5899 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
5900 this HMAC (and other) operations are several times slower than OpenSSL
5904 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
5905 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
5907 *) Use the correct content when signing type "other".
5910 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
5912 *) Fix various bugs revealed by running the NISCC test suite:
5914 Stop out of bounds reads in the ASN1 code when presented with
5915 invalid tags (CVE-2003-0543 and CVE-2003-0544).
5917 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
5919 If verify callback ignores invalid public key errors don't try to check
5920 certificate signature with the NULL public key.
5924 *) New -ignore_err option in ocsp application to stop the server
5925 exiting on the first error in a request.
5928 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
5929 if the server requested one: as stated in TLS 1.0 and SSL 3.0
5933 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
5934 extra data after the compression methods not only for TLS 1.0
5935 but also for SSL 3.0 (as required by the specification).
5936 [Bodo Moeller; problem pointed out by Matthias Loepfe]
5938 *) Change X509_certificate_type() to mark the key as exported/exportable
5939 when it's 512 *bits* long, not 512 bytes.
5942 *) Change AES_cbc_encrypt() so it outputs exact multiple of
5943 blocks during encryption.
5946 *) Various fixes to base64 BIO and non blocking I/O. On write
5947 flushes were not handled properly if the BIO retried. On read
5948 data was not being buffered properly and had various logic bugs.
5949 This also affects blocking I/O when the data being decoded is a
5953 *) Various S/MIME bugfixes and compatibility changes:
5954 output correct application/pkcs7 MIME type if
5955 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
5956 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
5957 of files as .eml work). Correctly handle very long lines in MIME
5961 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
5963 *) Countermeasure against the Klima-Pokorny-Rosa extension of
5964 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
5965 a protocol version number mismatch like a decryption error
5966 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
5969 *) Turn on RSA blinding by default in the default implementation
5970 to avoid a timing attack. Applications that don't want it can call
5971 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
5972 They would be ill-advised to do so in most cases.
5973 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
5975 *) Change RSA blinding code so that it works when the PRNG is not
5976 seeded (in this case, the secret RSA exponent is abused as
5977 an unpredictable seed -- if it is not unpredictable, there
5978 is no point in blinding anyway). Make RSA blinding thread-safe
5979 by remembering the creator's thread ID in rsa->blinding and
5980 having all other threads use local one-time blinding factors
5981 (this requires more computation than sharing rsa->blinding, but
5982 avoids excessive locking; and if an RSA object is not shared
5983 between threads, blinding will still be very fast).
5986 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
5987 ENGINE as defaults for all supported algorithms irrespective of
5988 the 'flags' parameter. 'flags' is now honoured, so applications
5989 should make sure they are passing it correctly.
5992 *) Target "mingw" now allows native Windows code to be generated in
5993 the Cygwin environment as well as with the MinGW compiler.
5996 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
5998 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
5999 via timing by performing a MAC computation even if incorrect
6000 block cipher padding has been found. This is a countermeasure
6001 against active attacks where the attacker has to distinguish
6002 between bad padding and a MAC verification error. (CVE-2003-0078)
6004 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
6005 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
6006 Martin Vuagnoux (EPFL, Ilion)]
6008 *) Make the no-err option work as intended. The intention with no-err
6009 is not to have the whole error stack handling routines removed from
6010 libcrypto, it's only intended to remove all the function name and
6011 reason texts, thereby removing some of the footprint that may not
6012 be interesting if those errors aren't displayed anyway.
6014 NOTE: it's still possible for any application or module to have it's
6015 own set of error texts inserted. The routines are there, just not
6016 used by default when no-err is given.
6019 *) Add support for FreeBSD on IA64.
6020 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
6022 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
6023 Kerberos function mit_des_cbc_cksum(). Before this change,
6024 the value returned by DES_cbc_cksum() was like the one from
6025 mit_des_cbc_cksum(), except the bytes were swapped.
6026 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
6028 *) Allow an application to disable the automatic SSL chain building.
6029 Before this a rather primitive chain build was always performed in
6030 ssl3_output_cert_chain(): an application had no way to send the
6031 correct chain if the automatic operation produced an incorrect result.
6033 Now the chain builder is disabled if either:
6035 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
6037 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
6039 The reasoning behind this is that an application would not want the
6040 auto chain building to take place if extra chain certificates are
6041 present and it might also want a means of sending no additional
6042 certificates (for example the chain has two certificates and the
6046 *) Add the possibility to build without the ENGINE framework.
6047 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
6049 *) Under Win32 gmtime() can return NULL: check return value in
6050 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
6053 *) DSA routines: under certain error conditions uninitialized BN objects
6054 could be freed. Solution: make sure initialization is performed early
6055 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
6056 Nils Larsch <nla@trustcenter.de> via PR#459)
6059 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
6060 checked on reconnect on the client side, therefore session resumption
6061 could still fail with a "ssl session id is different" error. This
6062 behaviour is masked when SSL_OP_ALL is used due to
6063 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
6064 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
6065 followup to PR #377.
6068 *) IA-32 assembler support enhancements: unified ELF targets, support
6069 for SCO/Caldera platforms, fix for Cygwin shared build.
6072 *) Add support for FreeBSD on sparc64. As a consequence, support for
6073 FreeBSD on non-x86 processors is separate from x86 processors on
6074 the config script, much like the NetBSD support.
6075 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
6077 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
6079 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
6082 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
6083 code (06) was taken as the first octet of the session ID and the last
6084 octet was ignored consequently. As a result SSLv2 client side session
6085 caching could not have worked due to the session ID mismatch between
6087 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
6091 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
6092 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
6096 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
6097 seems that in spite of existing for more than a year, many application
6098 author have done nothing to provide the necessary callbacks, which
6099 means that this particular engine will not work properly anywhere.
6100 This is a very unfortunate situation which forces us, in the name
6101 of usability, to give the hw_ncipher.c a static lock, which is part
6103 NOTE: This is for the 0.9.7 series ONLY. This hack will never
6104 appear in 0.9.8 or later. We EXPECT application authors to have
6105 dealt properly with this when 0.9.8 is released (unless we actually
6106 make such changes in the libcrypto locking code that changes will
6107 have to be made anyway).
6110 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
6111 octets have been read, EOF or an error occurs. Without this change
6112 some truncated ASN1 structures will not produce an error.
6115 *) Disable Heimdal support, since it hasn't been fully implemented.
6116 Still give the possibility to force the use of Heimdal, but with
6117 warnings and a request that patches get sent to openssl-dev.
6120 *) Add the VC-CE target, introduce the WINCE sysname, and add
6121 INSTALL.WCE and appropriate conditionals to make it build.
6122 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
6124 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
6125 cygssl-x.y.z.dll, where x, y and z are the major, minor and
6126 edit numbers of the version.
6127 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
6129 *) Introduce safe string copy and catenation functions
6130 (BUF_strlcpy() and BUF_strlcat()).
6131 [Ben Laurie (CHATS) and Richard Levitte]
6133 *) Avoid using fixed-size buffers for one-line DNs.
6134 [Ben Laurie (CHATS)]
6136 *) Add BUF_MEM_grow_clean() to avoid information leakage when
6137 resizing buffers containing secrets, and use where appropriate.
6138 [Ben Laurie (CHATS)]
6140 *) Avoid using fixed size buffers for configuration file location.
6141 [Ben Laurie (CHATS)]
6143 *) Avoid filename truncation for various CA files.
6144 [Ben Laurie (CHATS)]
6146 *) Use sizeof in preference to magic numbers.
6147 [Ben Laurie (CHATS)]
6149 *) Avoid filename truncation in cert requests.
6150 [Ben Laurie (CHATS)]
6152 *) Add assertions to check for (supposedly impossible) buffer
6154 [Ben Laurie (CHATS)]
6156 *) Don't cache truncated DNS entries in the local cache (this could
6157 potentially lead to a spoofing attack).
6158 [Ben Laurie (CHATS)]
6160 *) Fix various buffers to be large enough for hex/decimal
6161 representations in a platform independent manner.
6162 [Ben Laurie (CHATS)]
6164 *) Add CRYPTO_realloc_clean() to avoid information leakage when
6165 resizing buffers containing secrets, and use where appropriate.
6166 [Ben Laurie (CHATS)]
6168 *) Add BIO_indent() to avoid much slightly worrying code to do
6170 [Ben Laurie (CHATS)]
6172 *) Convert sprintf()/BIO_puts() to BIO_printf().
6173 [Ben Laurie (CHATS)]
6175 *) buffer_gets() could terminate with the buffer only half
6177 [Ben Laurie (CHATS)]
6179 *) Add assertions to prevent user-supplied crypto functions from
6180 overflowing internal buffers by having large block sizes, etc.
6181 [Ben Laurie (CHATS)]
6183 *) New OPENSSL_assert() macro (similar to assert(), but enabled
6185 [Ben Laurie (CHATS)]
6187 *) Eliminate unused copy of key in RC4.
6188 [Ben Laurie (CHATS)]
6190 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
6191 [Ben Laurie (CHATS)]
6193 *) Fix off-by-one error in EGD path.
6194 [Ben Laurie (CHATS)]
6196 *) If RANDFILE path is too long, ignore instead of truncating.
6197 [Ben Laurie (CHATS)]
6199 *) Eliminate unused and incorrectly sized X.509 structure
6201 [Ben Laurie (CHATS)]
6203 *) Eliminate unused and dangerous function knumber().
6204 [Ben Laurie (CHATS)]
6206 *) Eliminate unused and dangerous structure, KSSL_ERR.
6207 [Ben Laurie (CHATS)]
6209 *) Protect against overlong session ID context length in an encoded
6210 session object. Since these are local, this does not appear to be
6212 [Ben Laurie (CHATS)]
6214 *) Change from security patch (see 0.9.6e below) that did not affect
6215 the 0.9.6 release series:
6217 Remote buffer overflow in SSL3 protocol - an attacker could
6218 supply an oversized master key in Kerberos-enabled versions.
6220 [Ben Laurie (CHATS)]
6222 *) Change the SSL kerb5 codes to match RFC 2712.
6225 *) Make -nameopt work fully for req and add -reqopt switch.
6226 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
6228 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
6229 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
6231 *) Make sure tests can be performed even if the corresponding algorithms
6232 have been removed entirely. This was also the last step to make
6233 OpenSSL compilable with DJGPP under all reasonable conditions.
6234 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
6236 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
6237 to allow version independent disabling of normally unselected ciphers,
6238 which may be activated as a side-effect of selecting a single cipher.
6240 (E.g., cipher list string "RSA" enables ciphersuites that are left
6241 out of "ALL" because they do not provide symmetric encryption.
6242 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
6243 [Lutz Jaenicke, Bodo Moeller]
6245 *) Add appropriate support for separate platform-dependent build
6246 directories. The recommended way to make a platform-dependent
6247 build directory is the following (tested on Linux), maybe with
6250 # Place yourself outside of the OpenSSL source tree. In
6251 # this example, the environment variable OPENSSL_SOURCE
6252 # is assumed to contain the absolute OpenSSL source directory.
6253 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
6254 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
6255 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
6256 mkdir -p `dirname $F`
6257 ln -s $OPENSSL_SOURCE/$F $F
6260 To be absolutely sure not to disturb the source tree, a "make clean"
6261 is a good thing. If it isn't successful, don't worry about it,
6262 it probably means the source directory is very clean.
6265 *) Make sure any ENGINE control commands make local copies of string
6266 pointers passed to them whenever necessary. Otherwise it is possible
6267 the caller may have overwritten (or deallocated) the original string
6268 data when a later ENGINE operation tries to use the stored values.
6269 [Götz Babin-Ebell <babinebell@trustcenter.de>]
6271 *) Improve diagnostics in file reading and command-line digests.
6272 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
6274 *) Add AES modes CFB and OFB to the object database. Correct an
6275 error in AES-CFB decryption.
6278 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
6279 allows existing EVP_CIPHER_CTX structures to be reused after
6280 calling EVP_*Final(). This behaviour is used by encryption
6281 BIOs and some applications. This has the side effect that
6282 applications must explicitly clean up cipher contexts with
6283 EVP_CIPHER_CTX_cleanup() or they will leak memory.
6286 *) Check the values of dna and dnb in bn_mul_recursive before calling
6287 bn_mul_comba (a non zero value means the a or b arrays do not contain
6288 n2 elements) and fallback to bn_mul_normal if either is not zero.
6291 *) Fix escaping of non-ASCII characters when using the -subj option
6292 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
6295 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
6296 form for "surname", serialNumber has no short form.
6297 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
6298 therefore remove "mail" short name for "internet 7".
6299 The OID for unique identifiers in X509 certificates is
6300 x500UniqueIdentifier, not uniqueIdentifier.
6301 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
6304 *) Add an "init" command to the ENGINE config module and auto initialize
6305 ENGINEs. Without any "init" command the ENGINE will be initialized
6306 after all ctrl commands have been executed on it. If init=1 the
6307 ENGINE is initailized at that point (ctrls before that point are run
6308 on the uninitialized ENGINE and after on the initialized one). If
6309 init=0 then the ENGINE will not be iniatialized at all.
6312 *) Fix the 'app_verify_callback' interface so that the user-defined
6313 argument is actually passed to the callback: In the
6314 SSL_CTX_set_cert_verify_callback() prototype, the callback
6315 declaration has been changed from
6318 int (*cb)(X509_STORE_CTX *,void *);
6319 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
6320 i=s->ctx->app_verify_callback(&ctx)
6321 has been changed into
6322 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
6324 To update applications using SSL_CTX_set_cert_verify_callback(),
6325 a dummy argument can be added to their callback functions.
6326 [D. K. Smetters <smetters@parc.xerox.com>]
6328 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
6329 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
6331 *) Add and OPENSSL_LOAD_CONF define which will cause
6332 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
6333 This allows older applications to transparently support certain
6334 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
6335 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
6336 load the config file and OPENSSL_add_all_algorithms_conf() which will
6337 always load it have also been added.
6340 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
6341 Adjust NIDs and EVP layer.
6342 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
6344 *) Config modules support in openssl utility.
6346 Most commands now load modules from the config file,
6347 though in a few (such as version) this isn't done
6348 because it couldn't be used for anything.
6350 In the case of ca and req the config file used is
6351 the same as the utility itself: that is the -config
6352 command line option can be used to specify an
6356 *) Move default behaviour from OPENSSL_config(). If appname is NULL
6357 use "openssl_conf" if filename is NULL use default openssl config file.
6360 *) Add an argument to OPENSSL_config() to allow the use of an alternative
6361 config section name. Add a new flag to tolerate a missing config file
6362 and move code to CONF_modules_load_file().
6365 *) Support for crypto accelerator cards from Accelerated Encryption
6366 Processing, www.aep.ie. (Use engine 'aep')
6367 The support was copied from 0.9.6c [engine] and adapted/corrected
6368 to work with the new engine framework.
6369 [AEP Inc. and Richard Levitte]
6371 *) Support for SureWare crypto accelerator cards from Baltimore
6372 Technologies. (Use engine 'sureware')
6373 The support was copied from 0.9.6c [engine] and adapted
6374 to work with the new engine framework.
6377 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
6378 make the newer ENGINE framework commands for the CHIL engine work.
6379 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
6381 *) Make it possible to produce shared libraries on ReliantUNIX.
6382 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
6384 *) Add the configuration target debug-linux-ppro.
6385 Make 'openssl rsa' use the general key loading routines
6386 implemented in apps.c, and make those routines able to
6387 handle the key format FORMAT_NETSCAPE and the variant
6389 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
6391 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
6392 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
6394 *) Add -keyform to rsautl, and document -engine.
6395 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
6397 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
6398 BIO_R_NO_SUCH_FILE error code rather than the generic
6399 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
6402 *) Add new functions
6404 ERR_peek_last_error_line
6405 ERR_peek_last_error_line_data.
6406 These are similar to
6409 ERR_peek_error_line_data,
6410 but report on the latest error recorded rather than the first one
6411 still in the error queue.
6412 [Ben Laurie, Bodo Moeller]
6414 *) default_algorithms option in ENGINE config module. This allows things
6416 default_algorithms = ALL
6417 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
6420 *) Preliminary ENGINE config module.
6423 *) New experimental application configuration code.
6426 *) Change the AES code to follow the same name structure as all other
6427 symmetric ciphers, and behave the same way. Move everything to
6428 the directory crypto/aes, thereby obsoleting crypto/rijndael.
6429 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
6431 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
6432 [Ben Laurie and Theo de Raadt]
6434 *) Add option to output public keys in req command.
6435 [Massimiliano Pala madwolf@openca.org]
6437 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
6438 (up to about 10% better than before for P-192 and P-224).
6441 *) New functions/macros
6443 SSL_CTX_set_msg_callback(ctx, cb)
6444 SSL_CTX_set_msg_callback_arg(ctx, arg)
6445 SSL_set_msg_callback(ssl, cb)
6446 SSL_set_msg_callback_arg(ssl, arg)
6448 to request calling a callback function
6450 void cb(int write_p, int version, int content_type,
6451 const void *buf, size_t len, SSL *ssl, void *arg)
6453 whenever a protocol message has been completely received
6454 (write_p == 0) or sent (write_p == 1). Here 'version' is the
6455 protocol version according to which the SSL library interprets
6456 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
6457 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
6458 the content type as defined in the SSL 3.0/TLS 1.0 protocol
6459 specification (change_cipher_spec(20), alert(21), handshake(22)).
6460 'buf' and 'len' point to the actual message, 'ssl' to the
6461 SSL object, and 'arg' is the application-defined value set by
6462 SSL[_CTX]_set_msg_callback_arg().
6464 'openssl s_client' and 'openssl s_server' have new '-msg' options
6465 to enable a callback that displays all protocol messages.
6468 *) Change the shared library support so shared libraries are built as
6469 soon as the corresponding static library is finished, and thereby get
6470 openssl and the test programs linked against the shared library.
6471 This still only happens when the keyword "shard" has been given to
6472 the configuration scripts.
6474 NOTE: shared library support is still an experimental thing, and
6475 backward binary compatibility is still not guaranteed.
6476 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
6478 *) Add support for Subject Information Access extension.
6479 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
6481 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
6482 additional bytes when new memory had to be allocated, not just
6483 when reusing an existing buffer.
6486 *) New command line and configuration option 'utf8' for the req command.
6487 This allows field values to be specified as UTF8 strings.
6490 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
6491 runs for the former and machine-readable output for the latter.
6494 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
6495 of the e-mail address in the DN (i.e., it will go into a certificate
6496 extension only). The new configuration file option 'email_in_dn = no'
6497 has the same effect.
6498 [Massimiliano Pala madwolf@openca.org]
6500 *) Change all functions with names starting with des_ to be starting
6501 with DES_ instead. Add wrappers that are compatible with libdes,
6502 but are named _ossl_old_des_*. Finally, add macros that map the
6503 des_* symbols to the corresponding _ossl_old_des_* if libdes
6504 compatibility is desired. If OpenSSL 0.9.6c compatibility is
6505 desired, the des_* symbols will be mapped to DES_*, with one
6508 Since we provide two compatibility mappings, the user needs to
6509 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
6510 compatibility is desired. The default (i.e., when that macro
6511 isn't defined) is OpenSSL 0.9.6c compatibility.
6513 There are also macros that enable and disable the support of old
6514 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
6515 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
6516 are defined, the default will apply: to support the old des routines.
6518 In either case, one must include openssl/des.h to get the correct
6519 definitions. Do not try to just include openssl/des_old.h, that
6522 NOTE: This is a major break of an old API into a new one. Software
6523 authors are encouraged to switch to the DES_ style functions. Some
6524 time in the future, des_old.h and the libdes compatibility functions
6525 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
6526 default), and then completely removed.
6529 *) Test for certificates which contain unsupported critical extensions.
6530 If such a certificate is found during a verify operation it is
6531 rejected by default: this behaviour can be overridden by either
6532 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
6533 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
6534 X509_supported_extension() has also been added which returns 1 if a
6535 particular extension is supported.
6538 *) Modify the behaviour of EVP cipher functions in similar way to digests
6539 to retain compatibility with existing code.
6542 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
6543 compatibility with existing code. In particular the 'ctx' parameter does
6544 not have to be to be initialized before the call to EVP_DigestInit() and
6545 it is tidied up after a call to EVP_DigestFinal(). New function
6546 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
6547 EVP_MD_CTX_copy() changed to not require the destination to be
6548 initialized valid and new function EVP_MD_CTX_copy_ex() added which
6549 requires the destination to be valid.
6551 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
6552 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
6555 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
6556 so that complete 'Handshake' protocol structures are kept in memory
6557 instead of overwriting 'msg_type' and 'length' with 'body' data.
6560 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
6561 [Massimo Santin via Richard Levitte]
6563 *) Major restructuring to the underlying ENGINE code. This includes
6564 reduction of linker bloat, separation of pure "ENGINE" manipulation
6565 (initialisation, etc) from functionality dealing with implementations
6566 of specific crypto iterfaces. This change also introduces integrated
6567 support for symmetric ciphers and digest implementations - so ENGINEs
6568 can now accelerate these by providing EVP_CIPHER and EVP_MD
6569 implementations of their own. This is detailed in crypto/engine/README
6570 as it couldn't be adequately described here. However, there are a few
6571 API changes worth noting - some RSA, DSA, DH, and RAND functions that
6572 were changed in the original introduction of ENGINE code have now
6573 reverted back - the hooking from this code to ENGINE is now a good
6574 deal more passive and at run-time, operations deal directly with
6575 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
6576 dereferencing through an ENGINE pointer any more. Also, the ENGINE
6577 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
6578 they were not being used by the framework as there is no concept of a
6579 BIGNUM_METHOD and they could not be generalised to the new
6580 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
6581 ENGINE_cpy() has been removed as it cannot be consistently defined in
6585 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
6588 *) Change mkdef.pl to sort symbols that get the same entry number,
6589 and make sure the automatically generated functions ERR_load_*
6590 become part of libeay.num as well.
6593 *) New function SSL_renegotiate_pending(). This returns true once
6594 renegotiation has been requested (either SSL_renegotiate() call
6595 or HelloRequest/ClientHello received from the peer) and becomes
6596 false once a handshake has been completed.
6597 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
6598 sends a HelloRequest, but does not ensure that a handshake takes
6599 place. SSL_renegotiate_pending() is useful for checking if the
6600 client has followed the request.)
6603 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
6604 By default, clients may request session resumption even during
6605 renegotiation (if session ID contexts permit); with this option,
6606 session resumption is possible only in the first handshake.
6608 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
6609 more bits available for options that should not be part of
6610 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
6613 *) Add some demos for certificate and certificate request creation.
6616 *) Make maximum certificate chain size accepted from the peer application
6617 settable (SSL*_get/set_max_cert_list()), as proposed by
6618 "Douglas E. Engert" <deengert@anl.gov>.
6621 *) Add support for shared libraries for Unixware-7
6622 (Boyd Lynn Gerber <gerberb@zenez.com>).
6625 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
6626 be done prior to destruction. Use this to unload error strings from
6627 ENGINEs that load their own error strings. NB: This adds two new API
6628 functions to "get" and "set" this destroy handler in an ENGINE.
6631 *) Alter all existing ENGINE implementations (except "openssl" and
6632 "openbsd") to dynamically instantiate their own error strings. This
6633 makes them more flexible to be built both as statically-linked ENGINEs
6634 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
6635 Also, add stub code to each that makes building them as self-contained
6636 shared-libraries easier (see README.ENGINE).
6639 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
6640 implementations into applications that are completely implemented in
6641 self-contained shared-libraries. The "dynamic" ENGINE exposes control
6642 commands that can be used to configure what shared-library to load and
6643 to control aspects of the way it is handled. Also, made an update to
6644 the README.ENGINE file that brings its information up-to-date and
6645 provides some information and instructions on the "dynamic" ENGINE
6646 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
6649 *) Make it possible to unload ranges of ERR strings with a new
6650 "ERR_unload_strings" function.
6653 *) Add a copy() function to EVP_MD.
6656 *) Make EVP_MD routines take a context pointer instead of just the
6657 md_data void pointer.
6660 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
6661 that the digest can only process a single chunk of data
6662 (typically because it is provided by a piece of
6663 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
6664 is only going to provide a single chunk of data, and hence the
6665 framework needn't accumulate the data for oneshot drivers.
6668 *) As with "ERR", make it possible to replace the underlying "ex_data"
6669 functions. This change also alters the storage and management of global
6670 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
6671 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
6672 index counters. The API functions that use this state have been changed
6673 to take a "class_index" rather than pointers to the class's local STACK
6674 and counter, and there is now an API function to dynamically create new
6675 classes. This centralisation allows us to (a) plug a lot of the
6676 thread-safety problems that existed, and (b) makes it possible to clean
6677 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
6678 such data would previously have always leaked in application code and
6679 workarounds were in place to make the memory debugging turn a blind eye
6680 to it. Application code that doesn't use this new function will still
6681 leak as before, but their memory debugging output will announce it now
6682 rather than letting it slide.
6684 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
6685 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
6686 has a return value to indicate success or failure.
6689 *) Make it possible to replace the underlying "ERR" functions such that the
6690 global state (2 LHASH tables and 2 locks) is only used by the "default"
6691 implementation. This change also adds two functions to "get" and "set"
6692 the implementation prior to it being automatically set the first time
6693 any other ERR function takes place. Ie. an application can call "get",
6694 pass the return value to a module it has just loaded, and that module
6695 can call its own "set" function using that value. This means the
6696 module's "ERR" operations will use (and modify) the error state in the
6697 application and not in its own statically linked copy of OpenSSL code.
6700 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
6701 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
6702 the operation, and provides a more encapsulated way for external code
6703 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
6704 to use these functions rather than manually incrementing the counts.
6706 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
6709 *) Add EVP test program.
6712 *) Add symmetric cipher support to ENGINE. Expect the API to change!
6715 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
6716 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
6717 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
6718 These allow a CRL to be built without having to access X509_CRL fields
6719 directly. Modify 'ca' application to use new functions.
6722 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
6723 bug workarounds. Rollback attack detection is a security feature.
6724 The problem will only arise on OpenSSL servers when TLSv1 is not
6725 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
6726 Software authors not wanting to support TLSv1 will have special reasons
6727 for their choice and can explicitly enable this option.
6728 [Bodo Moeller, Lutz Jaenicke]
6730 *) Rationalise EVP so it can be extended: don't include a union of
6731 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
6732 (similar to those existing for EVP_CIPHER_CTX).
6737 EVP_MD_CTX_init(&md); /* new function call */
6738 EVP_DigestInit(&md, EVP_sha1());
6739 EVP_DigestUpdate(&md, in, len);
6740 EVP_DigestFinal(&md, out, NULL);
6741 EVP_MD_CTX_cleanup(&md); /* new function call */
6745 *) Make DES key schedule conform to the usual scheme, as well as
6746 correcting its structure. This means that calls to DES functions
6747 now have to pass a pointer to a des_key_schedule instead of a
6748 plain des_key_schedule (which was actually always a pointer
6751 des_key_schedule ks;
6753 des_set_key_checked(..., &ks);
6754 des_ncbc_encrypt(..., &ks, ...);
6756 (Note that a later change renames 'des_...' into 'DES_...'.)
6759 *) Initial reduction of linker bloat: the use of some functions, such as
6760 PEM causes large amounts of unused functions to be linked in due to
6761 poor organisation. For example pem_all.c contains every PEM function
6762 which has a knock on effect of linking in large amounts of (unused)
6763 ASN1 code. Grouping together similar functions and splitting unrelated
6764 functions prevents this.
6767 *) Cleanup of EVP macros.
6770 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
6771 correct _ecb suffix.
6774 *) Add initial OCSP responder support to ocsp application. The
6775 revocation information is handled using the text based index
6776 use by the ca application. The responder can either handle
6777 requests generated internally, supplied in files (for example
6778 via a CGI script) or using an internal minimal server.
6781 *) Add configuration choices to get zlib compression for TLS.
6784 *) Changes to Kerberos SSL for RFC 2712 compliance:
6785 1. Implemented real KerberosWrapper, instead of just using
6786 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
6787 2. Implemented optional authenticator field of KerberosWrapper.
6789 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
6790 and authenticator structs; see crypto/krb5/.
6792 Generalized Kerberos calls to support multiple Kerberos libraries.
6793 [Vern Staats <staatsvr@asc.hpc.mil>,
6794 Jeffrey Altman <jaltman@columbia.edu>
6795 via Richard Levitte]
6797 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
6798 already does with RSA. testdsa.h now has 'priv_key/pub_key'
6799 values for each of the key sizes rather than having just
6800 parameters (and 'speed' generating keys each time).
6803 *) Speed up EVP routines.
6806 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
6807 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
6808 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
6809 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
6811 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
6812 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
6813 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
6816 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
6818 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
6821 *) Added the OS2-EMX target.
6822 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
6824 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
6825 to support NCONF routines in extension code. New function CONF_set_nconf()
6826 to allow functions which take an NCONF to also handle the old LHASH
6827 structure: this means that the old CONF compatible routines can be
6828 retained (in particular wrt extensions) without having to duplicate the
6829 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
6832 *) Enhance the general user interface with mechanisms for inner control
6833 and with possibilities to have yes/no kind of prompts.
6836 *) Change all calls to low level digest routines in the library and
6837 applications to use EVP. Add missing calls to HMAC_cleanup() and
6838 don't assume HMAC_CTX can be copied using memcpy().
6839 [Verdon Walker <VWalker@novell.com>, Steve Henson]
6841 *) Add the possibility to control engines through control names but with
6842 arbitrary arguments instead of just a string.
6843 Change the key loaders to take a UI_METHOD instead of a callback
6844 function pointer. NOTE: this breaks binary compatibility with earlier
6845 versions of OpenSSL [engine].
6846 Adapt the nCipher code for these new conditions and add a card insertion
6850 *) Enhance the general user interface with mechanisms to better support
6851 dialog box interfaces, application-defined prompts, the possibility
6852 to use defaults (for example default passwords from somewhere else)
6853 and interrupts/cancellations.
6856 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
6857 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
6860 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
6861 tidy up some unnecessarily weird code in 'sk_new()').
6862 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
6864 *) Change the key loading routines for ENGINEs to use the same kind
6865 callback (pem_password_cb) as all other routines that need this
6869 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
6870 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
6871 than this minimum value is recommended.
6874 *) New random seeder for OpenVMS, using the system process statistics
6875 that are easily reachable.
6878 *) Windows apparently can't transparently handle global
6879 variables defined in DLLs. Initialisations such as:
6881 const ASN1_ITEM *it = &ASN1_INTEGER_it;
6883 won't compile. This is used by the any applications that need to
6884 declare their own ASN1 modules. This was fixed by adding the option
6885 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
6886 needed for static libraries under Win32.
6889 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
6890 setting of purpose and trust fields. New X509_STORE trust and
6891 purpose functions and tidy up setting in other SSL functions.
6894 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
6895 structure. These are inherited by X509_STORE_CTX when it is
6896 initialised. This allows various defaults to be set in the
6897 X509_STORE structure (such as flags for CRL checking and custom
6898 purpose or trust settings) for functions which only use X509_STORE_CTX
6899 internally such as S/MIME.
6901 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
6902 trust settings if they are not set in X509_STORE. This allows X509_STORE
6903 purposes and trust (in S/MIME for example) to override any set by default.
6905 Add command line options for CRL checking to smime, s_client and s_server
6909 *) Initial CRL based revocation checking. If the CRL checking flag(s)
6910 are set then the CRL is looked up in the X509_STORE structure and
6911 its validity and signature checked, then if the certificate is found
6912 in the CRL the verify fails with a revoked error.
6914 Various new CRL related callbacks added to X509_STORE_CTX structure.
6916 Command line options added to 'verify' application to support this.
6918 This needs some additional work, such as being able to handle multiple
6919 CRLs with different times, extension based lookup (rather than just
6920 by subject name) and ultimately more complete V2 CRL extension
6924 *) Add a general user interface API (crypto/ui/). This is designed
6925 to replace things like des_read_password and friends (backward
6926 compatibility functions using this new API are provided).
6927 The purpose is to remove prompting functions from the DES code
6928 section as well as provide for prompting through dialog boxes in
6929 a window system and the like.
6932 *) Add "ex_data" support to ENGINE so implementations can add state at a
6933 per-structure level rather than having to store it globally.
6936 *) Make it possible for ENGINE structures to be copied when retrieved by
6937 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
6938 This causes the "original" ENGINE structure to act like a template,
6939 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
6940 operational state can be localised to each ENGINE structure, despite the
6941 fact they all share the same "methods". New ENGINE structures returned in
6942 this case have no functional references and the return value is the single
6943 structural reference. This matches the single structural reference returned
6944 by ENGINE_by_id() normally, when it is incremented on the pre-existing
6948 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
6949 needs to match any other type at all we need to manually clear the
6953 *) Changes to the "openssl engine" utility to include;
6954 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
6955 about an ENGINE's available control commands.
6956 - executing control commands from command line arguments using the
6957 '-pre' and '-post' switches. '-post' is only used if '-t' is
6958 specified and the ENGINE is successfully initialised. The syntax for
6959 the individual commands are colon-separated, for example;
6960 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
6963 *) New dynamic control command support for ENGINEs. ENGINEs can now
6964 declare their own commands (numbers), names (strings), descriptions,
6965 and input types for run-time discovery by calling applications. A
6966 subset of these commands are implicitly classed as "executable"
6967 depending on their input type, and only these can be invoked through
6968 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
6969 can be based on user input, config files, etc). The distinction is
6970 that "executable" commands cannot return anything other than a boolean
6971 result and can only support numeric or string input, whereas some
6972 discoverable commands may only be for direct use through
6973 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
6974 pointers, or other custom uses. The "executable" commands are to
6975 support parameterisations of ENGINE behaviour that can be
6976 unambiguously defined by ENGINEs and used consistently across any
6977 OpenSSL-based application. Commands have been added to all the
6978 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
6979 control over shared-library paths without source code alterations.
6982 *) Changed all ENGINE implementations to dynamically allocate their
6983 ENGINEs rather than declaring them statically. Apart from this being
6984 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
6985 this also allows the implementations to compile without using the
6986 internal engine_int.h header.
6989 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
6990 'const' value. Any code that should be able to modify a RAND_METHOD
6991 should already have non-const pointers to it (ie. they should only
6992 modify their own ones).
6995 *) Made a variety of little tweaks to the ENGINE code.
6996 - "atalla" and "ubsec" string definitions were moved from header files
6997 to C code. "nuron" string definitions were placed in variables
6998 rather than hard-coded - allowing parameterisation of these values
6999 later on via ctrl() commands.
7000 - Removed unused "#if 0"'d code.
7001 - Fixed engine list iteration code so it uses ENGINE_free() to release
7002 structural references.
7003 - Constified the RAND_METHOD element of ENGINE structures.
7004 - Constified various get/set functions as appropriate and added
7005 missing functions (including a catch-all ENGINE_cpy that duplicates
7006 all ENGINE values onto a new ENGINE except reference counts/state).
7007 - Removed NULL parameter checks in get/set functions. Setting a method
7008 or function to NULL is a way of cancelling out a previously set
7009 value. Passing a NULL ENGINE parameter is just plain stupid anyway
7010 and doesn't justify the extra error symbols and code.
7011 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
7012 flags from engine_int.h to engine.h.
7013 - Changed prototypes for ENGINE handler functions (init(), finish(),
7014 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
7017 *) Implement binary inversion algorithm for BN_mod_inverse in addition
7018 to the algorithm using long division. The binary algorithm can be
7019 used only if the modulus is odd. On 32-bit systems, it is faster
7020 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
7021 roughly 5-15% for 256-bit moduli), so we use it only for moduli
7022 up to 450 bits. In 64-bit environments, the binary algorithm
7023 appears to be advantageous for much longer moduli; here we use it
7024 for moduli up to 2048 bits.
7027 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
7028 could not support the combine flag in choice fields.
7031 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
7032 extensions from a certificate request to the certificate.
7035 *) Allow multiple 'certopt' and 'nameopt' options to be separated
7036 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
7037 file: this allows the display of the certificate about to be
7038 signed to be customised, to allow certain fields to be included
7039 or excluded and extension details. The old system didn't display
7040 multicharacter strings properly, omitted fields not in the policy
7041 and couldn't display additional details such as extensions.
7044 *) Function EC_POINTs_mul for multiple scalar multiplication
7045 of an arbitrary number of elliptic curve points
7046 \sum scalars[i]*points[i],
7047 optionally including the generator defined for the EC_GROUP:
7048 scalar*generator + \sum scalars[i]*points[i].
7050 EC_POINT_mul is a simple wrapper function for the typical case
7051 that the point list has just one item (besides the optional
7055 *) First EC_METHODs for curves over GF(p):
7057 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
7058 operations and provides various method functions that can also
7059 operate with faster implementations of modular arithmetic.
7061 EC_GFp_mont_method() reuses most functions that are part of
7062 EC_GFp_simple_method, but uses Montgomery arithmetic.
7064 [Bodo Moeller; point addition and point doubling
7065 implementation directly derived from source code provided by
7066 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
7068 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
7069 crypto/ec/ec_lib.c):
7071 Curves are EC_GROUP objects (with an optional group generator)
7072 based on EC_METHODs that are built into the library.
7074 Points are EC_POINT objects based on EC_GROUP objects.
7076 Most of the framework would be able to handle curves over arbitrary
7077 finite fields, but as there are no obvious types for fields other
7078 than GF(p), some functions are limited to that for now.
7081 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
7082 that the file contains a complete HTTP response.
7085 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
7086 change the def and num file printf format specifier from "%-40sXXX"
7087 to "%-39s XXX". The latter will always guarantee a space after the
7088 field while the former will cause them to run together if the field
7089 is 40 of more characters long.
7092 *) Constify the cipher and digest 'method' functions and structures
7093 and modify related functions to take constant EVP_MD and EVP_CIPHER
7097 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
7098 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
7101 *) Modify EVP_Digest*() routines so they now return values. Although the
7102 internal software routines can never fail additional hardware versions
7106 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
7108 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
7109 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
7112 ERR_R_NESTED_ASN1_ERROR
7114 ERR_R_MISSING_ASN1_EOS
7115 were 4 .. 9, conflicting with
7116 ERR_LIB_RSA (= ERR_R_RSA_LIB)
7118 ERR_LIB_PEM (= ERR_R_PEM_LIB).
7119 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
7121 Add new error code 'ERR_R_INTERNAL_ERROR'.
7124 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
7128 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
7129 sets the subject name for a new request or supersedes the
7130 subject name in a given request. Formats that can be parsed are
7131 'CN=Some Name, OU=myOU, C=IT'
7133 'CN=Some Name/OU=myOU/C=IT'.
7135 Add options '-batch' and '-verbose' to 'openssl req'.
7136 [Massimiliano Pala <madwolf@hackmasters.net>]
7138 *) Introduce the possibility to access global variables through
7139 functions on platform were that's the best way to handle exporting
7140 global variables in shared libraries. To enable this functionality,
7141 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
7142 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
7143 is normally done by Configure or something similar).
7145 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
7146 in the source file (foo.c) like this:
7148 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
7149 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
7151 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
7152 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
7154 OPENSSL_DECLARE_GLOBAL(int,foo);
7155 #define foo OPENSSL_GLOBAL_REF(foo)
7156 OPENSSL_DECLARE_GLOBAL(double,bar);
7157 #define bar OPENSSL_GLOBAL_REF(bar)
7159 The #defines are very important, and therefore so is including the
7160 header file everywhere where the defined globals are used.
7162 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
7163 of ASN.1 items, but that structure is a bit different.
7165 The largest change is in util/mkdef.pl which has been enhanced with
7166 better and easier to understand logic to choose which symbols should
7167 go into the Windows .def files as well as a number of fixes and code
7168 cleanup (among others, algorithm keywords are now sorted
7169 lexicographically to avoid constant rewrites).
7172 *) In BN_div() keep a copy of the sign of 'num' before writing the
7173 result to 'rm' because if rm==num the value will be overwritten
7174 and produce the wrong result if 'num' is negative: this caused
7175 problems with BN_mod() and BN_nnmod().
7178 *) Function OCSP_request_verify(). This checks the signature on an
7179 OCSP request and verifies the signer certificate. The signer
7180 certificate is just checked for a generic purpose and OCSP request
7184 *) Add OCSP_check_validity() function to check the validity of OCSP
7185 responses. OCSP responses are prepared in real time and may only
7186 be a few seconds old. Simply checking that the current time lies
7187 between thisUpdate and nextUpdate max reject otherwise valid responses
7188 caused by either OCSP responder or client clock inaccuracy. Instead
7189 we allow thisUpdate and nextUpdate to fall within a certain period of
7190 the current time. The age of the response can also optionally be
7191 checked. Two new options -validity_period and -status_age added to
7195 *) If signature or public key algorithm is unrecognized print out its
7196 OID rather that just UNKNOWN.
7199 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
7200 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
7201 ID to be generated from the issuer certificate alone which can then be
7202 passed to OCSP_id_issuer_cmp().
7205 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
7206 ASN1 modules to export functions returning ASN1_ITEM pointers
7207 instead of the ASN1_ITEM structures themselves. This adds several
7208 new macros which allow the underlying ASN1 function/structure to
7209 be accessed transparently. As a result code should not use ASN1_ITEM
7210 references directly (such as &X509_it) but instead use the relevant
7211 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
7212 use of the new ASN1 code on platforms where exporting structures
7213 is problematical (for example in shared libraries) but exporting
7214 functions returning pointers to structures is not.
7217 *) Add support for overriding the generation of SSL/TLS session IDs.
7218 These callbacks can be registered either in an SSL_CTX or per SSL.
7219 The purpose of this is to allow applications to control, if they wish,
7220 the arbitrary values chosen for use as session IDs, particularly as it
7221 can be useful for session caching in multiple-server environments. A
7222 command-line switch for testing this (and any client code that wishes
7223 to use such a feature) has been added to "s_server".
7224 [Geoff Thorpe, Lutz Jaenicke]
7226 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
7227 of the form '#if defined(...) || defined(...) || ...' and
7228 '#if !defined(...) && !defined(...) && ...'. This also avoids
7229 the growing number of special cases it was previously handling.
7232 *) Make all configuration macros available for application by making
7233 sure they are available in opensslconf.h, by giving them names starting
7234 with "OPENSSL_" to avoid conflicts with other packages and by making
7235 sure e_os2.h will cover all platform-specific cases together with
7237 Additionally, it is now possible to define configuration/platform-
7238 specific names (called "system identities"). In the C code, these
7239 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
7240 macro with the name beginning with "OPENSSL_SYS_", which is determined
7241 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
7245 *) New option -set_serial to 'req' and 'x509' this allows the serial
7246 number to use to be specified on the command line. Previously self
7247 signed certificates were hard coded with serial number 0 and the
7248 CA options of 'x509' had to use a serial number in a file which was
7252 *) New options to 'ca' utility to support V2 CRL entry extensions.
7253 Currently CRL reason, invalidity date and hold instruction are
7254 supported. Add new CRL extensions to V3 code and some new objects.
7257 *) New function EVP_CIPHER_CTX_set_padding() this is used to
7258 disable standard block padding (aka PKCS#5 padding) in the EVP
7259 API, which was previously mandatory. This means that the data is
7260 not padded in any way and so the total length much be a multiple
7261 of the block size, otherwise an error occurs.
7264 *) Initial (incomplete) OCSP SSL support.
7267 *) New function OCSP_parse_url(). This splits up a URL into its host,
7268 port and path components: primarily to parse OCSP URLs. New -url
7269 option to ocsp utility.
7272 *) New nonce behavior. The return value of OCSP_check_nonce() now
7273 reflects the various checks performed. Applications can decide
7274 whether to tolerate certain situations such as an absent nonce
7275 in a response when one was present in a request: the ocsp application
7276 just prints out a warning. New function OCSP_add1_basic_nonce()
7277 this is to allow responders to include a nonce in a response even if
7278 the request is nonce-less.
7281 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
7282 skipped when using openssl x509 multiple times on a single input file,
7283 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
7286 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
7287 set string type: to handle setting ASN1_TIME structures. Fix ca
7288 utility to correctly initialize revocation date of CRLs.
7291 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
7292 the clients preferred ciphersuites and rather use its own preferences.
7293 Should help to work around M$ SGC (Server Gated Cryptography) bug in
7294 Internet Explorer by ensuring unchanged hash method during stepup.
7295 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
7298 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
7299 to aes and add a new 'exist' option to print out symbols that don't
7303 *) Additional options to ocsp utility to allow flags to be set and
7304 additional certificates supplied.
7307 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
7308 OCSP client a number of certificate to only verify the response
7312 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
7313 handle the new API. Currently only ECB, CBC modes supported. Add new
7316 Add TLS AES ciphersuites as described in RFC3268, "Advanced
7317 Encryption Standard (AES) Ciphersuites for Transport Layer
7318 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
7319 not enabled by default and were not part of the "ALL" ciphersuite
7320 alias because they were not yet official; they could be
7321 explicitly requested by specifying the "AESdraft" ciphersuite
7322 group alias. In the final release of OpenSSL 0.9.7, the group
7323 alias is called "AES" and is part of "ALL".)
7324 [Ben Laurie, Steve Henson, Bodo Moeller]
7326 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
7327 request to response.
7330 *) Functions for OCSP responders. OCSP_request_onereq_count(),
7331 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
7332 extract information from a certificate request. OCSP_response_create()
7333 creates a response and optionally adds a basic response structure.
7334 OCSP_basic_add1_status() adds a complete single response to a basic
7335 response and returns the OCSP_SINGLERESP structure just added (to allow
7336 extensions to be included for example). OCSP_basic_add1_cert() adds a
7337 certificate to a basic response and OCSP_basic_sign() signs a basic
7338 response with various flags. New helper functions ASN1_TIME_check()
7339 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
7340 (converts ASN1_TIME to GeneralizedTime).
7343 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
7344 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
7345 structure from a certificate. X509_pubkey_digest() digests the public_key
7346 contents: this is used in various key identifiers.
7349 *) Make sk_sort() tolerate a NULL argument.
7350 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
7352 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
7353 passed by the function are trusted implicitly. If any of them signed the
7354 response then it is assumed to be valid and is not verified.
7357 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
7358 to data. This was previously part of the PKCS7 ASN1 code. This
7359 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
7360 [Steve Henson, reported by Kenneth R. Robinette
7361 <support@securenetterm.com>]
7363 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
7364 routines: without these tracing memory leaks is very painful.
7365 Fix leaks in PKCS12 and PKCS7 routines.
7368 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
7369 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
7370 effectively meant GeneralizedTime would never be used. Now it
7371 is initialised to -1 but X509_time_adj() now has to check the value
7372 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
7373 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
7374 [Steve Henson, reported by Kenneth R. Robinette
7375 <support@securenetterm.com>]
7377 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
7378 result in a zero length in the ASN1_INTEGER structure which was
7379 not consistent with the structure when d2i_ASN1_INTEGER() was used
7380 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
7381 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
7382 where it did not print out a minus for negative ASN1_INTEGER.
7385 *) Add summary printout to ocsp utility. The various functions which
7386 convert status values to strings have been renamed to:
7387 OCSP_response_status_str(), OCSP_cert_status_str() and
7388 OCSP_crl_reason_str() and are no longer static. New options
7389 to verify nonce values and to disable verification. OCSP response
7390 printout format cleaned up.
7393 *) Add additional OCSP certificate checks. These are those specified
7394 in RFC2560. This consists of two separate checks: the CA of the
7395 certificate being checked must either be the OCSP signer certificate
7396 or the issuer of the OCSP signer certificate. In the latter case the
7397 OCSP signer certificate must contain the OCSP signing extended key
7398 usage. This check is performed by attempting to match the OCSP
7399 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
7400 in the OCSP_CERTID structures of the response.
7403 *) Initial OCSP certificate verification added to OCSP_basic_verify()
7404 and related routines. This uses the standard OpenSSL certificate
7405 verify routines to perform initial checks (just CA validity) and
7406 to obtain the certificate chain. Then additional checks will be
7407 performed on the chain. Currently the root CA is checked to see
7408 if it is explicitly trusted for OCSP signing. This is used to set
7409 a root CA as a global signing root: that is any certificate that
7410 chains to that CA is an acceptable OCSP signing certificate.
7413 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
7414 extensions from a separate configuration file.
7415 As when reading extensions from the main configuration file,
7416 the '-extensions ...' option may be used for specifying the
7418 [Massimiliano Pala <madwolf@comune.modena.it>]
7420 *) New OCSP utility. Allows OCSP requests to be generated or
7421 read. The request can be sent to a responder and the output
7422 parsed, outputed or printed in text form. Not complete yet:
7423 still needs to check the OCSP response validity.
7426 *) New subcommands for 'openssl ca':
7427 'openssl ca -status <serial>' prints the status of the cert with
7428 the given serial number (according to the index file).
7429 'openssl ca -updatedb' updates the expiry status of certificates
7431 [Massimiliano Pala <madwolf@comune.modena.it>]
7433 *) New '-newreq-nodes' command option to CA.pl. This is like
7434 '-newreq', but calls 'openssl req' with the '-nodes' option
7435 so that the resulting key is not encrypted.
7436 [Damien Miller <djm@mindrot.org>]
7438 *) New configuration for the GNU Hurd.
7439 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
7441 *) Initial code to implement OCSP basic response verify. This
7442 is currently incomplete. Currently just finds the signer's
7443 certificate and verifies the signature on the response.
7446 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
7447 value of OPENSSLDIR. This is available via the new '-d' option
7448 to 'openssl version', and is also included in 'openssl version -a'.
7451 *) Allowing defining memory allocation callbacks that will be given
7452 file name and line number information in additional arguments
7453 (a const char* and an int). The basic functionality remains, as
7454 well as the original possibility to just replace malloc(),
7455 realloc() and free() by functions that do not know about these
7456 additional arguments. To register and find out the current
7457 settings for extended allocation functions, the following
7458 functions are provided:
7460 CRYPTO_set_mem_ex_functions
7461 CRYPTO_set_locked_mem_ex_functions
7462 CRYPTO_get_mem_ex_functions
7463 CRYPTO_get_locked_mem_ex_functions
7465 These work the same way as CRYPTO_set_mem_functions and friends.
7466 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
7467 extended allocation function is enabled.
7468 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
7469 a conventional allocation function is enabled.
7470 [Richard Levitte, Bodo Moeller]
7472 *) Finish off removing the remaining LHASH function pointer casts.
7473 There should no longer be any prototype-casting required when using
7474 the LHASH abstraction, and any casts that remain are "bugs". See
7475 the callback types and macros at the head of lhash.h for details
7476 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
7479 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
7480 If /dev/[u]random devices are not available or do not return enough
7481 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
7483 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
7484 /etc/entropy will be queried once each in this sequence, querying stops
7485 when enough entropy was collected without querying more sockets.
7488 *) Change the Unix RAND_poll() variant to be able to poll several
7489 random devices, as specified by DEVRANDOM, until a sufficient amount
7490 of data has been collected. We spend at most 10 ms on each file
7491 (select timeout) and read in non-blocking mode. DEVRANDOM now
7492 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
7493 (previously it was just the string "/dev/urandom"), so on typical
7494 platforms the 10 ms delay will never occur.
7495 Also separate out the Unix variant to its own file, rand_unix.c.
7496 For VMS, there's a currently-empty rand_vms.c.
7499 *) Move OCSP client related routines to ocsp_cl.c. These
7500 provide utility functions which an application needing
7501 to issue a request to an OCSP responder and analyse the
7502 response will typically need: as opposed to those which an
7503 OCSP responder itself would need which will be added later.
7505 OCSP_request_sign() signs an OCSP request with an API similar
7506 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
7507 response. OCSP_response_get1_basic() extracts basic response
7508 from response. OCSP_resp_find_status(): finds and extracts status
7509 information from an OCSP_CERTID structure (which will be created
7510 when the request structure is built). These are built from lower
7511 level functions which work on OCSP_SINGLERESP structures but
7512 won't normally be used unless the application wishes to examine
7513 extensions in the OCSP response for example.
7515 Replace nonce routines with a pair of functions.
7516 OCSP_request_add1_nonce() adds a nonce value and optionally
7517 generates a random value. OCSP_check_nonce() checks the
7518 validity of the nonce in an OCSP response.
7521 *) Change function OCSP_request_add() to OCSP_request_add0_id().
7522 This doesn't copy the supplied OCSP_CERTID and avoids the
7523 need to free up the newly created id. Change return type
7524 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
7525 This can then be used to add extensions to the request.
7526 Deleted OCSP_request_new(), since most of its functionality
7527 is now in OCSP_REQUEST_new() (and the case insensitive name
7528 clash) apart from the ability to set the request name which
7529 will be added elsewhere.
7532 *) Update OCSP API. Remove obsolete extensions argument from
7533 various functions. Extensions are now handled using the new
7534 OCSP extension code. New simple OCSP HTTP function which
7535 can be used to send requests and parse the response.
7538 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
7539 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
7540 uses the special reorder version of SET OF to sort the attributes
7541 and reorder them to match the encoded order. This resolves a long
7542 standing problem: a verify on a PKCS7 structure just after signing
7543 it used to fail because the attribute order did not match the
7544 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
7545 it uses the received order. This is necessary to tolerate some broken
7546 software that does not order SET OF. This is handled by encoding
7547 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
7548 to produce the required SET OF.
7551 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
7552 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
7553 files to get correct declarations of the ASN.1 item variables.
7556 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
7557 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
7558 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
7559 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
7560 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
7561 ASN1_ITEM and no wrapper functions.
7564 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
7565 replace the old function pointer based I/O routines. Change most of
7566 the *_d2i_bio() and *_d2i_fp() functions to use these.
7569 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
7570 lines, recognice more "algorithms" that can be deselected, and make
7571 it complain about algorithm deselection that isn't recognised.
7574 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
7575 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
7576 to use new functions. Add NO_ASN1_OLD which can be set to remove
7577 some old style ASN1 functions: this can be used to determine if old
7578 code will still work when these eventually go away.
7581 *) New extension functions for OCSP structures, these follow the
7582 same conventions as certificates and CRLs.
7585 *) New function X509V3_add1_i2d(). This automatically encodes and
7586 adds an extension. Its behaviour can be customised with various
7587 flags to append, replace or delete. Various wrappers added for
7588 certificates and CRLs.
7591 *) Fix to avoid calling the underlying ASN1 print routine when
7592 an extension cannot be parsed. Correct a typo in the
7593 OCSP_SERVICELOC extension. Tidy up print OCSP format.
7596 *) Make mkdef.pl parse some of the ASN1 macros and add appropriate
7597 entries for variables.
7600 *) Add functionality to apps/openssl.c for detecting locking
7601 problems: As the program is single-threaded, all we have
7602 to do is register a locking callback using an array for
7603 storing which locks are currently held by the program.
7606 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
7607 SSL_get_ex_data_X509_STORE_idx(), which is used in
7608 ssl_verify_cert_chain() and thus can be called at any time
7609 during TLS/SSL handshakes so that thread-safety is essential.
7610 Unfortunately, the ex_data design is not at all suited
7611 for multi-threaded use, so it probably should be abolished.
7614 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
7615 [Broadcom, tweaked and integrated by Geoff Thorpe]
7617 *) Move common extension printing code to new function
7618 X509V3_print_extensions(). Reorganise OCSP print routines and
7619 implement some needed OCSP ASN1 functions. Add OCSP extensions.
7622 *) New function X509_signature_print() to remove duplication in some
7626 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
7627 set (this was treated exactly the same as SET OF previously). This
7628 is used to reorder the STACK representing the structure to match the
7629 encoding. This will be used to get round a problem where a PKCS7
7630 structure which was signed could not be verified because the STACK
7631 order did not reflect the encoded order.
7634 *) Reimplement the OCSP ASN1 module using the new code.
7637 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
7638 for its ASN1 operations. The old style function pointers still exist
7639 for now but they will eventually go away.
7642 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
7643 completely replaces the old ASN1 functionality with a table driven
7644 encoder and decoder which interprets an ASN1_ITEM structure describing
7645 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
7646 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
7647 has also been converted to the new form.
7650 *) Change BN_mod_exp_recp so that negative moduli are tolerated
7651 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
7652 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
7653 for negative moduli.
7656 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
7657 of not touching the result's sign bit.
7660 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
7664 *) Changed the LHASH code to use prototypes for callbacks, and created
7665 macros to declare and implement thin (optionally static) functions
7666 that provide type-safety and avoid function pointer casting for the
7667 type-specific callbacks.
7670 *) Added Kerberos Cipher Suites to be used with TLS, as written in
7672 [Veers Staats <staatsvr@asc.hpc.mil>,
7673 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
7675 *) Reformat the FAQ so the different questions and answers can be divided
7676 in sections depending on the subject.
7679 *) Have the zlib compression code load ZLIB.DLL dynamically under
7683 *) New function BN_mod_sqrt for computing square roots modulo a prime
7684 (using the probabilistic Tonelli-Shanks algorithm unless
7685 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
7686 be handled deterministically).
7687 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
7689 *) Make BN_mod_inverse faster by explicitly handling small quotients
7690 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
7691 512 bits], about 30% for larger ones [1024 or 2048 bits].)
7694 *) New function BN_kronecker.
7697 *) Fix BN_gcd so that it works on negative inputs; the result is
7698 positive unless both parameters are zero.
7699 Previously something reasonably close to an infinite loop was
7700 possible because numbers could be growing instead of shrinking
7701 in the implementation of Euclid's algorithm.
7704 *) Fix BN_is_word() and BN_is_one() macros to take into account the
7705 sign of the number in question.
7707 Fix BN_is_word(a,w) to work correctly for w == 0.
7709 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
7710 because its test if the absolute value of 'a' equals 'w'.
7711 Note that BN_abs_is_word does *not* handle w == 0 reliably;
7712 it exists mostly for use in the implementations of BN_is_zero(),
7713 BN_is_one(), and BN_is_word().
7716 *) New function BN_swap.
7719 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
7720 the exponentiation functions are more likely to produce reasonable
7721 results on negative inputs.
7724 *) Change BN_mod_mul so that the result is always non-negative.
7725 Previously, it could be negative if one of the factors was negative;
7726 I don't think anyone really wanted that behaviour.
7729 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
7730 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
7731 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
7732 and add new functions:
7741 BN_mod_lshift1_quick
7745 These functions always generate non-negative results.
7747 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
7748 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
7750 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
7751 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
7752 be reduced modulo m.
7753 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
7756 The following entry accidentally appeared in the CHANGES file
7757 distributed with OpenSSL 0.9.7. The modifications described in
7758 it do *not* apply to OpenSSL 0.9.7.
7760 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
7761 was actually never needed) and in BN_mul(). The removal in BN_mul()
7762 required a small change in bn_mul_part_recursive() and the addition
7763 of the functions bn_cmp_part_words(), bn_sub_part_words() and
7764 bn_add_part_words(), which do the same thing as bn_cmp_words(),
7765 bn_sub_words() and bn_add_words() except they take arrays with
7770 *) In 'openssl passwd', verify passwords read from the terminal
7771 unless the '-salt' option is used (which usually means that
7772 verification would just waste user's time since the resulting
7773 hash is going to be compared with some given password hash)
7774 or the new '-noverify' option is used.
7776 This is an incompatible change, but it does not affect
7777 non-interactive use of 'openssl passwd' (passwords on the command
7778 line, '-stdin' option, '-in ...' option) and thus should not
7782 *) Remove all references to RSAref, since there's no more need for it.
7785 *) Make DSO load along a path given through an environment variable
7786 (SHLIB_PATH) with shl_load().
7789 *) Constify the ENGINE code as a result of BIGNUM constification.
7790 Also constify the RSA code and most things related to it. In a
7791 few places, most notable in the depth of the ASN.1 code, ugly
7792 casts back to non-const were required (to be solved at a later
7796 *) Make it so the openssl application has all engines loaded by default.
7799 *) Constify the BIGNUM routines a little more.
7802 *) Add the following functions:
7804 ENGINE_load_cswift()
7806 ENGINE_load_atalla()
7808 ENGINE_load_builtin_engines()
7810 That way, an application can itself choose if external engines that
7811 are built-in in OpenSSL shall ever be used or not. The benefit is
7812 that applications won't have to be linked with libdl or other dso
7813 libraries unless it's really needed.
7815 Changed 'openssl engine' to load all engines on demand.
7816 Changed the engine header files to avoid the duplication of some
7817 declarations (they differed!).
7820 *) 'openssl engine' can now list capabilities.
7823 *) Better error reporting in 'openssl engine'.
7826 *) Never call load_dh_param(NULL) in s_server.
7829 *) Add engine application. It can currently list engines by name and
7830 identity, and test if they are actually available.
7833 *) Improve RPM specification file by forcing symbolic linking and making
7834 sure the installed documentation is also owned by root.root.
7835 [Damien Miller <djm@mindrot.org>]
7837 *) Give the OpenSSL applications more possibilities to make use of
7838 keys (public as well as private) handled by engines.
7841 *) Add OCSP code that comes from CertCo.
7844 *) Add VMS support for the Rijndael code.
7847 *) Added untested support for Nuron crypto accelerator.
7850 *) Add support for external cryptographic devices. This code was
7851 previously distributed separately as the "engine" branch.
7852 [Geoff Thorpe, Richard Levitte]
7854 *) Rework the filename-translation in the DSO code. It is now possible to
7855 have far greater control over how a "name" is turned into a filename
7856 depending on the operating environment and any oddities about the
7857 different shared library filenames on each system.
7860 *) Support threads on FreeBSD-elf in Configure.
7863 *) Fix for SHA1 assembly problem with MASM: it produces
7864 warnings about corrupt line number information when assembling
7865 with debugging information. This is caused by the overlapping
7867 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
7870 NCONF_get_number() has no error checking at all. As a replacement,
7871 NCONF_get_number_e() is defined (_e for "error checking") and is
7872 promoted strongly. The old NCONF_get_number is kept around for
7873 binary backward compatibility.
7874 Make it possible for methods to load from something other than a BIO,
7875 by providing a function pointer that is given a name instead of a BIO.
7876 For example, this could be used to load configuration data from an
7880 *) Fix for non blocking accept BIOs. Added new I/O special reason
7881 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
7882 with non blocking I/O was not possible because no retry code was
7883 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
7887 *) Added the beginnings of Rijndael support.
7890 *) Fix for bug in DirectoryString mask setting. Add support for
7891 X509_NAME_print_ex() in 'req' and X509_print_ex() function
7892 to allow certificate printing to more controllable, additional
7893 'certopt' option to 'x509' to allow new printing options to be
7897 *) Clean old EAY MD5 hack from e_os.h.
7900 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
7902 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
7903 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
7904 [Joe Orton, Steve Henson]
7906 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
7908 *) Fix additional bug revealed by the NISCC test suite:
7910 Stop bug triggering large recursion when presented with
7911 certain ASN.1 tags (CVE-2003-0851)
7914 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
7916 *) Fix various bugs revealed by running the NISCC test suite:
7918 Stop out of bounds reads in the ASN1 code when presented with
7919 invalid tags (CVE-2003-0543 and CVE-2003-0544).
7921 If verify callback ignores invalid public key errors don't try to check
7922 certificate signature with the NULL public key.
7926 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
7927 if the server requested one: as stated in TLS 1.0 and SSL 3.0
7931 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
7932 extra data after the compression methods not only for TLS 1.0
7933 but also for SSL 3.0 (as required by the specification).
7934 [Bodo Moeller; problem pointed out by Matthias Loepfe]
7936 *) Change X509_certificate_type() to mark the key as exported/exportable
7937 when it's 512 *bits* long, not 512 bytes.
7940 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
7942 *) Countermeasure against the Klima-Pokorny-Rosa extension of
7943 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
7944 a protocol version number mismatch like a decryption error
7945 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
7948 *) Turn on RSA blinding by default in the default implementation
7949 to avoid a timing attack. Applications that don't want it can call
7950 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
7951 They would be ill-advised to do so in most cases.
7952 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
7954 *) Change RSA blinding code so that it works when the PRNG is not
7955 seeded (in this case, the secret RSA exponent is abused as
7956 an unpredictable seed -- if it is not unpredictable, there
7957 is no point in blinding anyway). Make RSA blinding thread-safe
7958 by remembering the creator's thread ID in rsa->blinding and
7959 having all other threads use local one-time blinding factors
7960 (this requires more computation than sharing rsa->blinding, but
7961 avoids excessive locking; and if an RSA object is not shared
7962 between threads, blinding will still be very fast).
7965 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
7967 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
7968 via timing by performing a MAC computation even if incorrrect
7969 block cipher padding has been found. This is a countermeasure
7970 against active attacks where the attacker has to distinguish
7971 between bad padding and a MAC verification error. (CVE-2003-0078)
7973 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
7974 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
7975 Martin Vuagnoux (EPFL, Ilion)]
7977 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
7979 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
7980 memory from it's contents. This is done with a counter that will
7981 place alternating values in each byte. This can be used to solve
7982 two issues: 1) the removal of calls to memset() by highly optimizing
7983 compilers, and 2) cleansing with other values than 0, since those can
7984 be read through on certain media, for example a swap space on disk.
7987 *) Bugfix: client side session caching did not work with external caching,
7988 because the session->cipher setting was not restored when reloading
7989 from the external cache. This problem was masked, when
7990 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
7991 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
7994 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
7995 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
7996 [Zeev Lieber <zeev-l@yahoo.com>]
7998 *) Undo an undocumented change introduced in 0.9.6e which caused
7999 repeated calls to OpenSSL_add_all_ciphers() and
8000 OpenSSL_add_all_digests() to be ignored, even after calling
8004 *) Change the default configuration reader to deal with last line not
8005 being properly terminated.
8008 *) Change X509_NAME_cmp() so it applies the special rules on handling
8009 DN values that are of type PrintableString, as well as RDNs of type
8010 emailAddress where the value has the type ia5String.
8011 [stefank@valicert.com via Richard Levitte]
8013 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
8014 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
8015 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
8016 the bitwise-OR of the two for use by the majority of applications
8017 wanting this behaviour, and update the docs. The documented
8018 behaviour and actual behaviour were inconsistent and had been
8019 changing anyway, so this is more a bug-fix than a behavioural
8021 [Geoff Thorpe, diagnosed by Nadav Har'El]
8023 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
8024 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
8027 *) Fix initialization code race conditions in
8028 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
8029 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
8030 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
8031 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
8032 ssl2_get_cipher_by_char(),
8033 ssl3_get_cipher_by_char().
8034 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
8036 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
8037 the cached sessions are flushed, as the remove_cb() might use ex_data
8038 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
8039 (see [openssl.org #212]).
8040 [Geoff Thorpe, Lutz Jaenicke]
8042 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
8043 length, instead of the encoding length to d2i_ASN1_OBJECT.
8046 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
8048 *) [In 0.9.6g-engine release:]
8049 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
8050 [Lynn Gazis <lgazis@rainbow.com>]
8052 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
8054 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
8055 and get fix the header length calculation.
8056 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
8057 Alon Kantor <alonk@checkpoint.com> (and others),
8060 *) Use proper error handling instead of 'assertions' in buffer
8061 overflow checks added in 0.9.6e. This prevents DoS (the
8062 assertions could call abort()).
8063 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
8065 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
8067 *) Add various sanity checks to asn1_get_length() to reject
8068 the ASN1 length bytes if they exceed sizeof(long), will appear
8069 negative or the content length exceeds the length of the
8071 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
8073 *) Fix cipher selection routines: ciphers without encryption had no flags
8074 for the cipher strength set and where therefore not handled correctly
8075 by the selection routines (PR #130).
8078 *) Fix EVP_dsa_sha macro.
8082 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
8083 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
8084 that was added in OpenSSL 0.9.6d.
8086 As the countermeasure turned out to be incompatible with some
8087 broken SSL implementations, the new option is part of SSL_OP_ALL.
8088 SSL_OP_ALL is usually employed when compatibility with weird SSL
8089 implementations is desired (e.g. '-bugs' option to 's_client' and
8090 's_server'), so the new option is automatically set in many
8094 *) Changes in security patch:
8096 Changes marked "(CHATS)" were sponsored by the Defense Advanced
8097 Research Projects Agency (DARPA) and Air Force Research Laboratory,
8098 Air Force Materiel Command, USAF, under agreement number
8101 *) Add various sanity checks to asn1_get_length() to reject
8102 the ASN1 length bytes if they exceed sizeof(long), will appear
8103 negative or the content length exceeds the length of the
8104 supplied buffer. (CVE-2002-0659)
8105 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
8107 *) Assertions for various potential buffer overflows, not known to
8109 [Ben Laurie (CHATS)]
8111 *) Various temporary buffers to hold ASCII versions of integers were
8112 too small for 64 bit platforms. (CVE-2002-0655)
8113 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
8115 *) Remote buffer overflow in SSL3 protocol - an attacker could
8116 supply an oversized session ID to a client. (CVE-2002-0656)
8117 [Ben Laurie (CHATS)]
8119 *) Remote buffer overflow in SSL2 protocol - an attacker could
8120 supply an oversized client master key. (CVE-2002-0656)
8121 [Ben Laurie (CHATS)]
8123 Changes between 0.9.6c and 0.9.6d [9 May 2002]
8125 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
8126 encoded as NULL) with id-dsa-with-sha1.
8127 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
8129 *) Check various X509_...() return values in apps/req.c.
8130 [Nils Larsch <nla@trustcenter.de>]
8132 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
8133 an end-of-file condition would erroneously be flagged, when the CRLF
8134 was just at the end of a processed block. The bug was discovered when
8135 processing data through a buffering memory BIO handing the data to a
8136 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
8137 <ptsekov@syntrex.com> and Nedelcho Stanev.
8140 *) Implement a countermeasure against a vulnerability recently found
8141 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
8142 before application data chunks to avoid the use of known IVs
8143 with data potentially chosen by the attacker.
8146 *) Fix length checks in ssl3_get_client_hello().
8149 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
8150 to prevent ssl3_read_internal() from incorrectly assuming that
8151 ssl3_read_bytes() found application data while handshake
8152 processing was enabled when in fact s->s3->in_read_app_data was
8153 merely automatically cleared during the initial handshake.
8154 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
8156 *) Fix object definitions for Private and Enterprise: they were not
8157 recognized in their shortname (=lowercase) representation. Extend
8158 obj_dat.pl to issue an error when using undefined keywords instead
8159 of silently ignoring the problem (Svenning Sorensen
8160 <sss@sss.dnsalias.net>).
8163 *) Fix DH_generate_parameters() so that it works for 'non-standard'
8164 generators, i.e. generators other than 2 and 5. (Previously, the
8165 code did not properly initialise the 'add' and 'rem' values to
8166 BN_generate_prime().)
8168 In the new general case, we do not insist that 'generator' is
8169 actually a primitive root: This requirement is rather pointless;
8170 a generator of the order-q subgroup is just as good, if not
8174 *) Map new X509 verification errors to alerts. Discovered and submitted by
8175 Tom Wu <tom@arcot.com>.
8178 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
8179 returning non-zero before the data has been completely received
8180 when using non-blocking I/O.
8181 [Bodo Moeller; problem pointed out by John Hughes]
8183 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
8184 [Ben Laurie, Lutz Jaenicke]
8186 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
8187 Yoram Zahavi <YoramZ@gilian.com>).
8190 *) Add information about CygWin 1.3 and on, and preserve proper
8191 configuration for the versions before that.
8192 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
8194 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
8195 check whether we deal with a copy of a session and do not delete from
8196 the cache in this case. Problem reported by "Izhar Shoshani Levi"
8197 <izhar@checkpoint.com>.
8200 *) Do not store session data into the internal session cache, if it
8201 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
8202 flag is set). Proposed by Aslam <aslam@funk.com>.
8205 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
8209 *) [In 0.9.6d-engine release:]
8210 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
8211 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
8213 *) Add the configuration target linux-s390x.
8214 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
8216 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
8217 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
8218 variable as an indication that a ClientHello message has been
8219 received. As the flag value will be lost between multiple
8220 invocations of ssl3_accept when using non-blocking I/O, the
8221 function may not be aware that a handshake has actually taken
8222 place, thus preventing a new session from being added to the
8225 To avoid this problem, we now set s->new_session to 2 instead of
8226 using a local variable.
8227 [Lutz Jaenicke, Bodo Moeller]
8229 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
8230 if the SSL_R_LENGTH_MISMATCH error is detected.
8231 [Geoff Thorpe, Bodo Moeller]
8233 *) New 'shared_ldflag' column in Configure platform table.
8236 *) Fix EVP_CIPHER_mode macro.
8237 ["Dan S. Camper" <dan@bti.net>]
8239 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
8240 type, we must throw them away by setting rr->length to 0.
8241 [D P Chang <dpc@qualys.com>]
8243 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
8245 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
8246 <Dominikus.Scherkl@biodata.com>. (The previous implementation
8247 worked incorrectly for those cases where range = 10..._2 and
8248 3*range is two bits longer than range.)
8251 *) Only add signing time to PKCS7 structures if it is not already
8255 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
8256 OBJ_ld_ce should be OBJ_id_ce.
8257 Also some ip-pda OIDs in crypto/objects/objects.txt were
8258 incorrect (cf. RFC 3039).
8259 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
8261 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
8262 returns early because it has nothing to do.
8263 [Andy Schneider <andy.schneider@bjss.co.uk>]
8265 *) [In 0.9.6c-engine release:]
8266 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
8267 [Andy Schneider <andy.schneider@bjss.co.uk>]
8269 *) [In 0.9.6c-engine release:]
8270 Add support for Cryptographic Appliance's keyserver technology.
8271 (Use engine 'keyclient')
8272 [Cryptographic Appliances and Geoff Thorpe]
8274 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
8275 is called via tools/c89.sh because arguments have to be
8276 rearranged (all '-L' options must appear before the first object
8278 [Richard Shapiro <rshapiro@abinitio.com>]
8280 *) [In 0.9.6c-engine release:]
8281 Add support for Broadcom crypto accelerator cards, backported
8283 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
8285 *) [In 0.9.6c-engine release:]
8286 Add support for SureWare crypto accelerator cards from
8287 Baltimore Technologies. (Use engine 'sureware')
8288 [Baltimore Technologies and Mark Cox]
8290 *) [In 0.9.6c-engine release:]
8291 Add support for crypto accelerator cards from Accelerated
8292 Encryption Processing, www.aep.ie. (Use engine 'aep')
8293 [AEP Inc. and Mark Cox]
8295 *) Add a configuration entry for gcc on UnixWare.
8296 [Gary Benson <gbenson@redhat.com>]
8298 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
8299 messages are stored in a single piece (fixed-length part and
8300 variable-length part combined) and fix various bugs found on the way.
8303 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
8304 instead. BIO_gethostbyname() does not know what timeouts are
8305 appropriate, so entries would stay in cache even when they have
8307 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
8309 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
8310 faced with a pathologically small ClientHello fragment that does
8311 not contain client_version: Instead of aborting with an error,
8312 simply choose the highest available protocol version (i.e.,
8313 TLS 1.0 unless it is disabled). In practice, ClientHello
8314 messages are never sent like this, but this change gives us
8315 strictly correct behaviour at least for TLS.
8318 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
8319 never resets s->method to s->ctx->method when called from within
8320 one of the SSL handshake functions.
8321 [Bodo Moeller; problem pointed out by Niko Baric]
8323 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
8324 (sent using the client's version number) if client_version is
8325 smaller than the protocol version in use. Also change
8326 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
8327 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
8328 the client will at least see that alert.
8331 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
8335 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
8336 client receives HelloRequest while in a handshake.
8337 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
8339 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
8340 should end in 'break', not 'goto end' which circumvents various
8341 cleanups done in state SSL_ST_OK. But session related stuff
8342 must be disabled for SSL_ST_OK in the case that we just sent a
8345 Also avoid some overhead by not calling ssl_init_wbio_buffer()
8346 before just sending a HelloRequest.
8347 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
8349 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
8350 reveal whether illegal block cipher padding was found or a MAC
8351 verification error occurred. (Neither SSLerr() codes nor alerts
8352 are directly visible to potential attackers, but the information
8353 may leak via logfiles.)
8355 Similar changes are not required for the SSL 2.0 implementation
8356 because the number of padding bytes is sent in clear for SSL 2.0,
8357 and the extra bytes are just ignored. However ssl/s2_pkt.c
8358 failed to verify that the purported number of padding bytes is in
8362 *) Add OpenUNIX-8 support including shared libraries
8363 (Boyd Lynn Gerber <gerberb@zenez.com>).
8366 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
8367 'wristwatch attack' using huge encoding parameters (cf.
8368 James H. Manger's CRYPTO 2001 paper). Note that the
8369 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
8370 encoding parameters and hence was not vulnerable.
8373 *) BN_sqr() bug fix.
8374 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
8376 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
8377 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
8378 followed by modular reduction.
8379 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
8381 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
8382 equivalent based on BN_pseudo_rand() instead of BN_rand().
8385 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
8386 This function was broken, as the check for a new client hello message
8387 to handle SGC did not allow these large messages.
8388 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
8391 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
8394 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
8395 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
8398 *) Rework the configuration and shared library support for Tru64 Unix.
8399 The configuration part makes use of modern compiler features and
8400 still retains old compiler behavior for those that run older versions
8401 of the OS. The shared library support part includes a variant that
8402 uses the RPATH feature, and is available through the special
8403 configuration target "alpha-cc-rpath", which will never be selected
8405 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
8407 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
8408 with the same message size as in ssl3_get_certificate_request().
8409 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
8410 messages might inadvertently be reject as too long.
8411 [Petr Lampa <lampa@fee.vutbr.cz>]
8413 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
8416 *) Modified SSL library such that the verify_callback that has been set
8417 specificly for an SSL object with SSL_set_verify() is actually being
8418 used. Before the change, a verify_callback set with this function was
8419 ignored and the verify_callback() set in the SSL_CTX at the time of
8420 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
8421 to allow the necessary settings.
8424 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
8425 explicitly to NULL, as at least on Solaris 8 this seems not always to be
8426 done automatically (in contradiction to the requirements of the C
8427 standard). This made problems when used from OpenSSH.
8430 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
8431 dh->length and always used
8433 BN_rand_range(priv_key, dh->p).
8435 BN_rand_range() is not necessary for Diffie-Hellman, and this
8436 specific range makes Diffie-Hellman unnecessarily inefficient if
8437 dh->length (recommended exponent length) is much smaller than the
8438 length of dh->p. We could use BN_rand_range() if the order of
8439 the subgroup was stored in the DH structure, but we only have
8444 BN_rand(priv_key, l, ...)
8446 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
8452 RSA_eay_public_encrypt
8453 RSA_eay_private_decrypt
8454 RSA_eay_private_encrypt (signing)
8455 RSA_eay_public_decrypt (signature verification)
8457 (default implementations for RSA_public_encrypt,
8458 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
8459 always reject numbers >= n.
8462 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
8463 to synchronize access to 'locking_thread'. This is necessary on
8464 systems where access to 'locking_thread' (an 'unsigned long'
8465 variable) is not atomic.
8468 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
8469 *before* setting the 'crypto_lock_rand' flag. The previous code had
8470 a race condition if 0 is a valid thread ID.
8471 [Travis Vitek <vitek@roguewave.com>]
8473 *) Add support for shared libraries under Irix.
8474 [Albert Chin-A-Young <china@thewrittenword.com>]
8476 *) Add configuration option to build on Linux on both big-endian and
8478 [Ralf Baechle <ralf@uni-koblenz.de>]
8480 *) Add the possibility to create shared libraries on HP-UX.
8483 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
8485 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
8486 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
8487 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
8488 PRNG state recovery was possible based on the output of
8489 one PRNG request appropriately sized to gain knowledge on
8490 'md' followed by enough consecutive 1-byte PRNG requests
8491 to traverse all of 'state'.
8493 1. When updating 'md_local' (the current thread's copy of 'md')
8494 during PRNG output generation, hash all of the previous
8495 'md_local' value, not just the half used for PRNG output.
8497 2. Make the number of bytes from 'state' included into the hash
8498 independent from the number of PRNG bytes requested.
8500 The first measure alone would be sufficient to avoid
8501 Markku-Juhani's attack. (Actually it had never occurred
8502 to me that the half of 'md_local' used for chaining was the
8503 half from which PRNG output bytes were taken -- I had always
8504 assumed that the secret half would be used.) The second
8505 measure makes sure that additional data from 'state' is never
8506 mixed into 'md_local' in small portions; this heuristically
8507 further strengthens the PRNG.
8510 *) Fix crypto/bn/asm/mips3.s.
8513 *) When only the key is given to "enc", the IV is undefined. Print out
8514 an error message in this case.
8517 *) Handle special case when X509_NAME is empty in X509 printing routines.
8520 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
8521 positive and less than q.
8524 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
8525 used: it isn't thread safe and the add_lock_callback should handle
8527 [Paul Rose <Paul.Rose@bridge.com>]
8529 *) Verify that incoming data obeys the block size in
8530 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
8534 [Ulf Möller, Bodo Möller]
8536 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
8537 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
8538 when fixing the server behaviour for backwards-compatible 'client
8539 hello' messages. (Note that the attack is impractical against
8540 SSL 3.0 and TLS 1.0 anyway because length and version checking
8541 means that the probability of guessing a valid ciphertext is
8542 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
8545 Before 0.9.5, the countermeasure (hide the error by generating a
8546 random 'decryption result') did not work properly because
8547 ERR_clear_error() was missing, meaning that SSL_get_error() would
8548 detect the supposedly ignored error.
8550 Both problems are now fixed.
8553 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
8554 (previously it was 1024).
8557 *) Fix for compatibility mode trust settings: ignore trust settings
8558 unless some valid trust or reject settings are present.
8561 *) Fix for blowfish EVP: its a variable length cipher.
8564 *) Fix various bugs related to DSA S/MIME verification. Handle missing
8565 parameters in DSA public key structures and return an error in the
8566 DSA routines if parameters are absent.
8569 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
8570 in the current directory if neither $RANDFILE nor $HOME was set.
8571 RAND_file_name() in 0.9.6a returned NULL in this case. This has
8572 caused some confusion to Windows users who haven't defined $HOME.
8573 Thus RAND_file_name() is changed again: e_os.h can define a
8574 DEFAULT_HOME, which will be used if $HOME is not set.
8575 For Windows, we use "C:"; on other platforms, we still require
8576 environment variables.
8578 *) Move 'if (!initialized) RAND_poll()' into regions protected by
8579 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
8580 having multiple threads call RAND_poll() concurrently.
8583 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
8584 combination of a flag and a thread ID variable.
8585 Otherwise while one thread is in ssleay_rand_bytes (which sets the
8586 flag), *other* threads can enter ssleay_add_bytes without obeying
8587 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
8588 that they do not hold after the first thread unsets add_do_not_lock).
8591 *) Change bctest again: '-x' expressions are not available in all
8595 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
8597 *) Fix a couple of memory leaks in PKCS7_dataDecode()
8598 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
8600 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
8601 the default extension for executables, if any. Also, make the perl
8602 scripts that use symlink() to test if it really exists and use "cp"
8603 if it doesn't. All this made OpenSSL compilable and installable in
8607 *) Fix for asn1_GetSequence() for indefinite length constructed data.
8608 If SEQUENCE is length is indefinite just set c->slen to the total
8609 amount of data available.
8610 [Steve Henson, reported by shige@FreeBSD.org]
8611 [This change does not apply to 0.9.7.]
8613 *) Change bctest to avoid here-documents inside command substitution
8614 (workaround for FreeBSD /bin/sh bug).
8615 For compatibility with Ultrix, avoid shell functions (introduced
8616 in the bctest version that searches along $PATH).
8619 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
8620 with des_encrypt() defined on some operating systems, like Solaris
8624 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
8625 On the Importance of Eliminating Errors in Cryptographic
8626 Computations, J. Cryptology 14 (2001) 2, 101-119,
8627 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
8630 *) MIPS assembler BIGNUM division bug fix.
8633 *) Disabled incorrect Alpha assembler code.
8636 *) Fix PKCS#7 decode routines so they correctly update the length
8637 after reading an EOC for the EXPLICIT tag.
8639 [This change does not apply to 0.9.7.]
8641 *) Fix bug in PKCS#12 key generation routines. This was triggered
8642 if a 3DES key was generated with a 0 initial byte. Include
8643 PKCS12_BROKEN_KEYGEN compilation option to retain the old
8644 (but broken) behaviour.
8647 *) Enhance bctest to search for a working bc along $PATH and print
8649 [Tim Rice <tim@multitalents.net> via Richard Levitte]
8651 *) Fix memory leaks in err.c: free err_data string if necessary;
8652 don't write to the wrong index in ERR_set_error_data.
8655 *) Implement ssl23_peek (analogous to ssl23_read), which previously
8659 *) Replace rdtsc with _emit statements for VC++ version 5.
8660 [Jeremy Cooper <jeremy@baymoo.org>]
8662 *) Make it possible to reuse SSLv2 sessions.
8665 *) In copy_email() check for >= 0 as a return value for
8666 X509_NAME_get_index_by_NID() since 0 is a valid index.
8667 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
8669 *) Avoid coredump with unsupported or invalid public keys by checking if
8670 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
8671 PKCS7_verify() fails with non detached data.
8674 *) Don't use getenv in library functions when run as setuid/setgid.
8675 New function OPENSSL_issetugid().
8678 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
8679 due to incorrect handling of multi-threading:
8681 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
8683 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
8685 3. Count how many times MemCheck_off() has been called so that
8686 nested use can be treated correctly. This also avoids
8687 inband-signalling in the previous code (which relied on the
8688 assumption that thread ID 0 is impossible).
8691 *) Add "-rand" option also to s_client and s_server.
8694 *) Fix CPU detection on Irix 6.x.
8695 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
8696 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
8698 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
8701 [This change does not apply to 0.9.7.]
8703 *) Use the cached encoding of an X509_NAME structure rather than
8704 copying it. This is apparently the reason for the libsafe "errors"
8705 but the code is actually correct.
8708 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
8709 Bleichenbacher's DSA attack.
8710 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
8711 to be set and top=0 forces the highest bit to be set; top=-1 is new
8712 and leaves the highest bit random.
8713 [Ulf Moeller, Bodo Moeller]
8715 *) In the NCONF_...-based implementations for CONF_... queries
8716 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
8717 a temporary CONF structure with the data component set to NULL
8718 (which gives segmentation faults in lh_retrieve).
8719 Instead, use NULL for the CONF pointer in CONF_get_string and
8720 CONF_get_number (which may use environment variables) and directly
8721 return NULL from CONF_get_section.
8724 *) Fix potential buffer overrun for EBCDIC.
8727 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
8728 keyUsage if basicConstraints absent for a CA.
8731 *) Make SMIME_write_PKCS7() write mail header values with a format that
8732 is more generally accepted (no spaces before the semicolon), since
8733 some programs can't parse those values properly otherwise. Also make
8734 sure BIO's that break lines after each write do not create invalid
8738 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
8739 macros previously used would not encode an empty SEQUENCE OF
8740 and break the signature.
8742 [This change does not apply to 0.9.7.]
8744 *) Zero the premaster secret after deriving the master secret in
8748 *) Add some EVP_add_digest_alias registrations (as found in
8749 OpenSSL_add_all_digests()) to SSL_library_init()
8750 aka OpenSSL_add_ssl_algorithms(). This provides improved
8751 compatibility with peers using X.509 certificates
8752 with unconventional AlgorithmIdentifier OIDs.
8755 *) Fix for Irix with NO_ASM.
8756 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
8758 *) ./config script fixes.
8759 [Ulf Moeller, Richard Levitte]
8761 *) Fix 'openssl passwd -1'.
8764 *) Change PKCS12_key_gen_asc() so it can cope with non null
8765 terminated strings whose length is passed in the passlen
8766 parameter, for example from PEM callbacks. This was done
8767 by adding an extra length parameter to asc2uni().
8768 [Steve Henson, reported by <oddissey@samsung.co.kr>]
8770 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
8771 call failed, free the DSA structure.
8774 *) Fix to uni2asc() to cope with zero length Unicode strings.
8775 These are present in some PKCS#12 files.
8778 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
8779 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
8780 when writing a 32767 byte record.
8781 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
8783 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
8784 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
8786 (RSA objects have a reference count access to which is protected
8787 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
8788 so they are meant to be shared between threads.)
8789 [Bodo Moeller, Geoff Thorpe; original patch submitted by
8790 "Reddie, Steven" <Steven.Reddie@ca.com>]
8792 *) Fix a deadlock in CRYPTO_mem_leaks().
8795 *) Use better test patterns in bntest.
8798 *) rand_win.c fix for Borland C.
8801 *) BN_rshift bugfix for n == 0.
8804 *) Add a 'bctest' script that checks for some known 'bc' bugs
8805 so that 'make test' does not abort just because 'bc' is broken.
8808 *) Store verify_result within SSL_SESSION also for client side to
8809 avoid potential security hole. (Re-used sessions on the client side
8810 always resulted in verify_result==X509_V_OK, not using the original
8811 result of the server certificate verification.)
8814 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
8815 SSL3_RT_APPLICATION_DATA, return 0.
8816 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
8820 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
8821 releases, have been re-implemented by renaming the previous
8822 implementations of ssl2_read and ssl3_read to ssl2_read_internal
8823 and ssl3_read_internal, respectively, and adding 'peek' parameters
8824 to them. The new ssl[23]_{read,peek} functions are calls to
8825 ssl[23]_read_internal with the 'peek' flag set appropriately.
8826 A 'peek' parameter has also been added to ssl3_read_bytes, which
8827 does the actual work for ssl3_read_internal.
8830 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
8831 the method-specific "init()" handler. Also clean up ex_data after
8832 calling the method-specific "finish()" handler. Previously, this was
8833 happening the other way round.
8836 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
8837 The previous value, 12, was not always sufficient for BN_mod_exp().
8840 *) Make sure that shared libraries get the internal name engine with
8841 the full version number and not just 0. This should mark the
8842 shared libraries as not backward compatible. Of course, this should
8843 be changed again when we can guarantee backward binary compatibility.
8846 *) Fix typo in get_cert_by_subject() in by_dir.c
8847 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
8849 *) Rework the system to generate shared libraries:
8851 - Make note of the expected extension for the shared libraries and
8852 if there is a need for symbolic links from for example libcrypto.so.0
8853 to libcrypto.so.0.9.7. There is extended info in Configure for
8856 - Make as few rebuilds of the shared libraries as possible.
8858 - Still avoid linking the OpenSSL programs with the shared libraries.
8860 - When installing, install the shared libraries separately from the
8864 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
8866 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
8867 and not in SSL_clear because the latter is also used by the
8868 accept/connect functions; previously, the settings made by
8869 SSL_set_read_ahead would be lost during the handshake.
8870 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
8872 *) Correct util/mkdef.pl to be selective about disabled algorithms.
8873 Previously, it would create entries for disabled algorithms no
8877 *) Added several new manual pages for SSL_* function.
8880 Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
8882 *) In ssl23_get_client_hello, generate an error message when faced
8883 with an initial SSL 3.0/TLS record that is too small to contain the
8884 first two bytes of the ClientHello message, i.e. client_version.
8885 (Note that this is a pathologic case that probably has never happened
8886 in real life.) The previous approach was to use the version number
8887 from the record header as a substitute; but our protocol choice
8888 should not depend on that one because it is not authenticated
8889 by the Finished messages.
8892 *) More robust randomness gathering functions for Windows.
8893 [Jeffrey Altman <jaltman@columbia.edu>]
8895 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
8896 not set then we don't setup the error code for issuer check errors
8897 to avoid possibly overwriting other errors which the callback does
8898 handle. If an application does set the flag then we assume it knows
8899 what it is doing and can handle the new informational codes
8903 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
8904 a general "ANY" type, as such it should be able to decode anything
8905 including tagged types. However it didn't check the class so it would
8906 wrongly interpret tagged types in the same way as their universal
8907 counterpart and unknown types were just rejected. Changed so that the
8908 tagged and unknown types are handled in the same way as a SEQUENCE:
8909 that is the encoding is stored intact. There is also a new type
8910 "V_ASN1_OTHER" which is used when the class is not universal, in this
8911 case we have no idea what the actual type is so we just lump them all
8915 *) On VMS, stdout may very well lead to a file that is written to
8916 in a record-oriented fashion. That means that every write() will
8917 write a separate record, which will be read separately by the
8918 programs trying to read from it. This can be very confusing.
8920 The solution is to put a BIO filter in the way that will buffer
8921 text until a linefeed is reached, and then write everything a
8922 line at a time, so every record written will be an actual line,
8923 not chunks of lines and not (usually doesn't happen, but I've
8924 seen it once) several lines in one record. BIO_f_linebuffer() is
8927 Currently, it's a VMS-only method, because that's where it has
8928 been tested well enough.
8931 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
8932 it can return incorrect results.
8933 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
8934 but it was in 0.9.6-beta[12].)
8937 *) Disable the check for content being present when verifying detached
8938 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
8939 include zero length content when signing messages.
8942 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
8943 BIO_ctrl (for BIO pairs).
8946 *) Add DSO method for VMS.
8949 *) Bug fix: Montgomery multiplication could produce results with the
8953 *) Add RPM specification openssl.spec and modify it to build three
8954 packages. The default package contains applications, application
8955 documentation and run-time libraries. The devel package contains
8956 include files, static libraries and function documentation. The
8957 doc package contains the contents of the doc directory. The original
8958 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
8961 *) Add a large number of documentation files for many SSL routines.
8962 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
8964 *) Add a configuration entry for Sony News 4.
8965 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
8967 *) Don't set the two most significant bits to one when generating a
8968 random number < q in the DSA library.
8971 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
8972 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
8973 the underlying transport is blocking) if a handshake took place.
8974 (The default behaviour is needed by applications such as s_client
8975 and s_server that use select() to determine when to use SSL_read;
8976 but for applications that know in advance when to expect data, it
8977 just makes things more complicated.)
8980 *) Add RAND_egd_bytes(), which gives control over the number of bytes read
8984 *) Add a few more EBCDIC conditionals that make `req' and `x509'
8985 work better on such systems.
8986 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
8988 *) Add two demo programs for PKCS12_parse() and PKCS12_create().
8989 Update PKCS12_parse() so it copies the friendlyName and the
8990 keyid to the certificates aux info.
8993 *) Fix bug in PKCS7_verify() which caused an infinite loop
8994 if there was more than one signature.
8995 [Sven Uszpelkat <su@celocom.de>]
8997 *) Major change in util/mkdef.pl to include extra information
8998 about each symbol, as well as presenting variables as well
8999 as functions. This change means that there's n more need
9000 to rebuild the .num files when some algorithms are excluded.
9003 *) Allow the verify time to be set by an application,
9004 rather than always using the current time.
9007 *) Phase 2 verify code reorganisation. The certificate
9008 verify code now looks up an issuer certificate by a
9009 number of criteria: subject name, authority key id
9010 and key usage. It also verifies self signed certificates
9011 by the same criteria. The main comparison function is
9012 X509_check_issued() which performs these checks.
9014 Lot of changes were necessary in order to support this
9015 without completely rewriting the lookup code.
9017 Authority and subject key identifier are now cached.
9019 The LHASH 'certs' is X509_STORE has now been replaced
9020 by a STACK_OF(X509_OBJECT). This is mainly because an
9021 LHASH can't store or retrieve multiple objects with
9022 the same hash value.
9024 As a result various functions (which were all internal
9025 use only) have changed to handle the new X509_STORE
9026 structure. This will break anything that messed round
9027 with X509_STORE internally.
9029 The functions X509_STORE_add_cert() now checks for an
9030 exact match, rather than just subject name.
9032 The X509_STORE API doesn't directly support the retrieval
9033 of multiple certificates matching a given criteria, however
9034 this can be worked round by performing a lookup first
9035 (which will fill the cache with candidate certificates)
9036 and then examining the cache for matches. This is probably
9037 the best we can do without throwing out X509_LOOKUP
9038 entirely (maybe later...).
9040 The X509_VERIFY_CTX structure has been enhanced considerably.
9042 All certificate lookup operations now go via a get_issuer()
9043 callback. Although this currently uses an X509_STORE it
9044 can be replaced by custom lookups. This is a simple way
9045 to bypass the X509_STORE hackery necessary to make this
9046 work and makes it possible to use more efficient techniques
9047 in future. A very simple version which uses a simple
9048 STACK for its trusted certificate store is also provided
9049 using X509_STORE_CTX_trusted_stack().
9051 The verify_cb() and verify() callbacks now have equivalents
9052 in the X509_STORE_CTX structure.
9054 X509_STORE_CTX also has a 'flags' field which can be used
9055 to customise the verify behaviour.
9058 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
9059 excludes S/MIME capabilities.
9062 *) When a certificate request is read in keep a copy of the
9063 original encoding of the signed data and use it when outputting
9064 again. Signatures then use the original encoding rather than
9065 a decoded, encoded version which may cause problems if the
9066 request is improperly encoded.
9069 *) For consistency with other BIO_puts implementations, call
9070 buffer_write(b, ...) directly in buffer_puts instead of calling
9073 In BIO_puts, increment b->num_write as in BIO_write.
9074 [Peter.Sylvester@EdelWeb.fr]
9076 *) Fix BN_mul_word for the case where the word is 0. (We have to use
9077 BN_zero, we may not return a BIGNUM with an array consisting of
9081 *) Avoid calling abort() from within the library when problems are
9082 detected, except if preprocessor symbols have been defined
9083 (such as REF_CHECK, BN_DEBUG etc.).
9086 *) New openssl application 'rsautl'. This utility can be
9087 used for low level RSA operations. DER public key
9088 BIO/fp routines also added.
9091 *) New Configure entry and patches for compiling on QNX 4.
9092 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
9094 *) A demo state-machine implementation was sponsored by
9095 Nuron (http://www.nuron.com/) and is now available in
9096 demos/state_machine.
9099 *) New options added to the 'dgst' utility for signature
9100 generation and verification.
9103 *) Unrecognized PKCS#7 content types are now handled via a
9104 catch all ASN1_TYPE structure. This allows unsupported
9105 types to be stored as a "blob" and an application can
9106 encode and decode it manually.
9109 *) Fix various signed/unsigned issues to make a_strex.c
9111 [Oscar Jacobsson <oscar.jacobsson@celocom.com>]
9113 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
9114 length if passed a buffer. ASN1_INTEGER_to_BN failed
9115 if passed a NULL BN and its argument was negative.
9116 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
9118 *) Modification to PKCS#7 encoding routines to output definite
9119 length encoding. Since currently the whole structures are in
9120 memory there's not real point in using indefinite length
9121 constructed encoding. However if OpenSSL is compiled with
9122 the flag PKCS7_INDEFINITE_ENCODING the old form is used.
9125 *) Added BIO_vprintf() and BIO_vsnprintf().
9128 *) Added more prefixes to parse for in the the strings written
9129 through a logging bio, to cover all the levels that are available
9130 through syslog. The prefixes are now:
9132 PANIC, EMERG, EMR => LOG_EMERG
9133 ALERT, ALR => LOG_ALERT
9134 CRIT, CRI => LOG_CRIT
9135 ERROR, ERR => LOG_ERR
9136 WARNING, WARN, WAR => LOG_WARNING
9137 NOTICE, NOTE, NOT => LOG_NOTICE
9138 INFO, INF => LOG_INFO
9139 DEBUG, DBG => LOG_DEBUG
9141 and as before, if none of those prefixes are present at the
9142 beginning of the string, LOG_ERR is chosen.
9144 On Win32, the LOG_* levels are mapped according to this:
9146 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
9147 LOG_WARNING => EVENTLOG_WARNING_TYPE
9148 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
9152 *) Made it possible to reconfigure with just the configuration
9153 argument "reconf" or "reconfigure". The command line arguments
9154 are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
9155 and are retrieved from there when reconfiguring.
9159 [Assar Westerlund <assar@sics.se>, Richard Levitte]
9161 *) Add the arguments -CAfile and -CApath to the pkcs12 utility.
9164 *) The obj_dat.pl script was messing up the sorting of object
9165 names. The reason was that it compared the quoted version
9166 of strings as a result "OCSP" > "OCSP Signing" because
9167 " > SPACE. Changed script to store unquoted versions of
9168 names and add quotes on output. It was also omitting some
9169 names from the lookup table if they were given a default
9170 value (that is if SN is missing it is given the same
9171 value as LN and vice versa), these are now added on the
9172 grounds that if an object has a name we should be able to
9173 look it up. Finally added warning output when duplicate
9174 short or long names are found.
9177 *) Changes needed for Tandem NSK.
9178 [Scott Uroff <scott@xypro.com>]
9180 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
9181 RSA_padding_check_SSLv23(), special padding was never detected
9182 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
9183 version rollback attacks was not effective.
9185 In s23_clnt.c, don't use special rollback-attack detection padding
9186 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
9187 client; similarly, in s23_srvr.c, don't do the rollback check if
9188 SSL 2.0 is the only protocol enabled in the server.
9191 *) Make it possible to get hexdumps of unprintable data with 'openssl
9192 asn1parse'. By implication, the functions ASN1_parse_dump() and
9193 BIO_dump_indent() are added.
9196 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
9197 these print out strings and name structures based on various
9198 flags including RFC2253 support and proper handling of
9199 multibyte characters. Added options to the 'x509' utility
9200 to allow the various flags to be set.
9203 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
9204 Also change the functions X509_cmp_current_time() and
9205 X509_gmtime_adj() work with an ASN1_TIME structure,
9206 this will enable certificates using GeneralizedTime in validity
9207 dates to be checked.
9210 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid
9211 negative public key encodings) on by default,
9212 NO_NEG_PUBKEY_BUG can be set to disable it.
9215 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
9216 content octets. An i2c_ASN1_OBJECT is unnecessary because
9217 the encoding can be trivially obtained from the structure.
9220 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
9221 not read locks (CRYPTO_r_[un]lock).
9224 *) A first attempt at creating official support for shared
9225 libraries through configuration. I've kept it so the
9226 default is static libraries only, and the OpenSSL programs
9227 are always statically linked for now, but there are
9228 preparations for dynamic linking in place.
9229 This has been tested on Linux and Tru64.
9232 *) Randomness polling function for Win9x, as described in:
9233 Peter Gutmann, Software Generation of Practically Strong
9237 *) Fix so PRNG is seeded in req if using an already existing
9241 *) New options to smime application. -inform and -outform
9242 allow alternative formats for the S/MIME message including
9243 PEM and DER. The -content option allows the content to be
9244 specified separately. This should allow things like Netscape
9245 form signing output easier to verify.
9248 *) Fix the ASN1 encoding of tags using the 'long form'.
9251 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
9252 STRING types. These convert content octets to and from the
9253 underlying type. The actual tag and length octets are
9254 already assumed to have been read in and checked. These
9255 are needed because all other string types have virtually
9256 identical handling apart from the tag. By having versions
9257 of the ASN1 functions that just operate on content octets
9258 IMPLICIT tagging can be handled properly. It also allows
9259 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
9260 and ASN1_INTEGER are identical apart from the tag.
9263 *) Change the handling of OID objects as follows:
9265 - New object identifiers are inserted in objects.txt, following
9266 the syntax given in objects.README.
9267 - objects.pl is used to process obj_mac.num and create a new
9269 - obj_dat.pl is used to create a new obj_dat.h, using the data in
9272 This is currently kind of a hack, and the perl code in objects.pl
9273 isn't very elegant, but it works as I intended. The simplest way
9274 to check that it worked correctly is to look in obj_dat.h and
9275 check the array nid_objs and make sure the objects haven't moved
9276 around (this is important!). Additions are OK, as well as
9277 consistent name changes.
9280 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
9283 *) Addition of the command line parameter '-rand file' to 'openssl req'.
9284 The given file adds to whatever has already been seeded into the
9285 random pool through the RANDFILE configuration file option or
9286 environment variable, or the default random state file.
9289 *) mkstack.pl now sorts each macro group into lexical order.
9290 Previously the output order depended on the order the files
9291 appeared in the directory, resulting in needless rewriting
9295 *) Patches to make OpenSSL compile under Win32 again. Mostly
9296 work arounds for the VC++ problem that it treats func() as
9297 func(void). Also stripped out the parts of mkdef.pl that
9298 added extra typesafe functions: these no longer exist.
9301 *) Reorganisation of the stack code. The macros are now all
9302 collected in safestack.h . Each macro is defined in terms of
9303 a "stack macro" of the form SKM_<name>(type, a, b). The
9304 DEBUG_SAFESTACK is now handled in terms of function casts,
9305 this has the advantage of retaining type safety without the
9306 use of additional functions. If DEBUG_SAFESTACK is not defined
9307 then the non typesafe macros are used instead. Also modified the
9308 mkstack.pl script to handle the new form. Needs testing to see
9309 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
9310 the default if no major problems. Similar behaviour for ASN1_SET_OF
9311 and PKCS12_STACK_OF.
9314 *) When some versions of IIS use the 'NET' form of private key the
9315 key derivation algorithm is different. Normally MD5(password) is
9316 used as a 128 bit RC4 key. In the modified case
9317 MD5(MD5(password) + "SGCKEYSALT") is used instead. Added some
9318 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
9319 as the old Netscape_RSA functions except they have an additional
9320 'sgckey' parameter which uses the modified algorithm. Also added
9321 an -sgckey command line option to the rsa utility. Thanks to
9322 Adrian Peck <bertie@ncipher.com> for posting details of the modified
9323 algorithm to openssl-dev.
9326 *) The evp_local.h macros were using 'c.##kname' which resulted in
9327 invalid expansion on some systems (SCO 5.0.5 for example).
9328 Corrected to 'c.kname'.
9329 [Phillip Porch <root@theporch.com>]
9331 *) New X509_get1_email() and X509_REQ_get1_email() functions that return
9332 a STACK of email addresses from a certificate or request, these look
9333 in the subject name and the subject alternative name extensions and
9334 omit any duplicate addresses.
9337 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows.
9338 This makes DSA verification about 2 % faster.
9341 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
9342 (meaning that now 2^5 values will be precomputed, which is only 4 KB
9343 plus overhead for 1024 bit moduli).
9344 This makes exponentiations about 0.5 % faster for 1024 bit
9345 exponents (as measured by "openssl speed rsa2048").
9348 *) Rename memory handling macros to avoid conflicts with other
9350 Malloc => OPENSSL_malloc
9351 Malloc_locked => OPENSSL_malloc_locked
9352 Realloc => OPENSSL_realloc
9353 Free => OPENSSL_free
9356 *) New function BN_mod_exp_mont_word for small bases (roughly 15%
9357 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
9360 *) CygWin32 support.
9361 [John Jarvie <jjarvie@newsguy.com>]
9363 *) The type-safe stack code has been rejigged. It is now only compiled
9364 in when OpenSSL is configured with the DEBUG_SAFESTACK option and
9365 by default all type-specific stack functions are "#define"d back to
9366 standard stack functions. This results in more streamlined output
9367 but retains the type-safety checking possibilities of the original
9371 *) The STACK code has been cleaned up, and certain type declarations
9372 that didn't make a lot of sense have been brought in line. This has
9373 also involved a cleanup of sorts in safestack.h to more correctly
9374 map type-safe stack functions onto their plain stack counterparts.
9375 This work has also resulted in a variety of "const"ifications of
9376 lots of the code, especially "_cmp" operations which should normally
9377 be prototyped with "const" parameters anyway.
9380 *) When generating bytes for the first time in md_rand.c, 'stir the pool'
9381 by seeding with STATE_SIZE dummy bytes (with zero entropy count).
9382 (The PRNG state consists of two parts, the large pool 'state' and 'md',
9383 where all of 'md' is used each time the PRNG is used, but 'state'
9384 is used only indexed by a cyclic counter. As entropy may not be
9385 well distributed from the beginning, 'md' is important as a
9386 chaining variable. However, the output function chains only half
9387 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
9388 all of 'md', and seeding with STATE_SIZE dummy bytes will result
9389 in all of 'state' being rewritten, with the new values depending
9390 on virtually all of 'md'. This overcomes the 80 bit limitation.)
9393 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
9394 the handshake is continued after ssl_verify_cert_chain();
9395 otherwise, if SSL_VERIFY_NONE is set, remaining error codes
9396 can lead to 'unexplainable' connection aborts later.
9397 [Bodo Moeller; problem tracked down by Lutz Jaenicke]
9399 *) Major EVP API cipher revision.
9400 Add hooks for extra EVP features. This allows various cipher
9401 parameters to be set in the EVP interface. Support added for variable
9402 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
9403 setting of RC2 and RC5 parameters.
9405 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
9408 Remove lots of duplicated code from the EVP library. For example *every*
9409 cipher init() function handles the 'iv' in the same way according to the
9410 cipher mode. They also all do nothing if the 'key' parameter is NULL and
9411 for CFB and OFB modes they zero ctx->num.
9413 New functionality allows removal of S/MIME code RC2 hack.
9415 Most of the routines have the same form and so can be declared in terms
9418 By shifting this to the top level EVP_CipherInit() it can be removed from
9419 all individual ciphers. If the cipher wants to handle IVs or keys
9420 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
9423 Change lots of functions like EVP_EncryptUpdate() to now return a
9424 value: although software versions of the algorithms cannot fail
9425 any installed hardware versions can.
9428 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
9429 this option is set, tolerate broken clients that send the negotiated
9430 protocol version number instead of the requested protocol version
9434 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag;
9435 i.e. non-zero for export ciphersuites, zero otherwise.
9436 Previous versions had this flag inverted, inconsistent with
9437 rsa_tmp_cb (..._TMP_RSA_CB).
9438 [Bodo Moeller; problem reported by Amit Chopra]
9440 *) Add missing DSA library text string. Work around for some IIS
9441 key files with invalid SEQUENCE encoding.
9444 *) Add a document (doc/standards.txt) that list all kinds of standards
9445 and so on that are implemented in OpenSSL.
9448 *) Enhance c_rehash script. Old version would mishandle certificates
9449 with the same subject name hash and wouldn't handle CRLs at all.
9450 Added -fingerprint option to crl utility, to support new c_rehash
9454 *) Eliminate non-ANSI declarations in crypto.h and stack.h.
9457 *) Fix for SSL server purpose checking. Server checking was
9458 rejecting certificates which had extended key usage present
9459 but no ssl client purpose.
9460 [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>]
9462 *) Make PKCS#12 code work with no password. The PKCS#12 spec
9463 is a little unclear about how a blank password is handled.
9464 Since the password in encoded as a BMPString with terminating
9465 double NULL a zero length password would end up as just the
9466 double NULL. However no password at all is different and is
9467 handled differently in the PKCS#12 key generation code. NS
9468 treats a blank password as zero length. MSIE treats it as no
9469 password on export: but it will try both on import. We now do
9470 the same: PKCS12_parse() tries zero length and no password if
9471 the password is set to "" or NULL (NULL is now a valid password:
9472 it wasn't before) as does the pkcs12 application.
9475 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
9476 perror when PEM_read_bio_X509_REQ fails, the error message must
9477 be obtained from the error queue.
9480 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
9481 it in ERR_remove_state if appropriate, and change ERR_get_state
9482 accordingly to avoid race conditions (this is necessary because
9483 thread_hash is no longer constant once set).
9486 *) Bugfix for linux-elf makefile.one.
9489 *) RSA_get_default_method() will now cause a default
9490 RSA_METHOD to be chosen if one doesn't exist already.
9491 Previously this was only set during a call to RSA_new()
9492 or RSA_new_method(NULL) meaning it was possible for
9493 RSA_get_default_method() to return NULL.
9496 *) Added native name translation to the existing DSO code
9497 that will convert (if the flag to do so is set) filenames
9498 that are sufficiently small and have no path information
9499 into a canonical native form. Eg. "blah" converted to
9500 "libblah.so" or "blah.dll" etc.
9503 *) New function ERR_error_string_n(e, buf, len) which is like
9504 ERR_error_string(e, buf), but writes at most 'len' bytes
9505 including the 0 terminator. For ERR_error_string_n, 'buf'
9507 [Damien Miller <djm@mindrot.org>, Bodo Moeller]
9509 *) CONF library reworked to become more general. A new CONF
9510 configuration file reader "class" is implemented as well as a
9511 new functions (NCONF_*, for "New CONF") to handle it. The now
9512 old CONF_* functions are still there, but are reimplemented to
9513 work in terms of the new functions. Also, a set of functions
9514 to handle the internal storage of the configuration data is
9515 provided to make it easier to write new configuration file
9516 reader "classes" (I can definitely see something reading a
9517 configuration file in XML format, for example), called _CONF_*,
9518 or "the configuration storage API"...
9520 The new configuration file reading functions are:
9522 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
9523 NCONF_get_section, NCONF_get_string, NCONF_get_numbre
9525 NCONF_default, NCONF_WIN32
9527 NCONF_dump_fp, NCONF_dump_bio
9529 NCONF_default and NCONF_WIN32 are method (or "class") choosers,
9530 NCONF_new creates a new CONF object. This works in the same way
9531 as other interfaces in OpenSSL, like the BIO interface.
9532 NCONF_dump_* dump the internal storage of the configuration file,
9533 which is useful for debugging. All other functions take the same
9534 arguments as the old CONF_* functions wth the exception of the
9535 first that must be a `CONF *' instead of a `LHASH *'.
9537 To make it easer to use the new classes with the old CONF_* functions,
9538 the function CONF_set_default_method is provided.
9541 *) Add '-tls1' option to 'openssl ciphers', which was already
9542 mentioned in the documentation but had not been implemented.
9543 (This option is not yet really useful because even the additional
9544 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
9547 *) Initial DSO code added into libcrypto for letting OpenSSL (and
9548 OpenSSL-based applications) load shared libraries and bind to
9549 them in a portable way.
9550 [Geoff Thorpe, with contributions from Richard Levitte]
9552 Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
9554 *) Make sure _lrotl and _lrotr are only used with MSVC.
9556 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
9557 (the default implementation of RAND_status).
9559 *) Rename openssl x509 option '-crlext', which was added in 0.9.5,
9560 to '-clrext' (= clear extensions), as intended and documented.
9561 [Bodo Moeller; inconsistency pointed out by Michael Attili
9564 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length
9565 was larger than the MD block size.
9566 [Steve Henson, pointed out by Yost William <YostW@tce.com>]
9568 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
9569 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
9570 using the passed key: if the passed key was a private key the result
9571 of X509_print(), for example, would be to print out all the private key
9575 *) des_quad_cksum() byte order bug fix.
9576 [Ulf Möller, using the problem description in krb4-0.9.7, where
9577 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>]
9579 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
9581 [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>]
9583 *) For easily testing in shell scripts whether some command
9584 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
9585 returns with exit code 0 iff no command of the given name is available.
9586 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
9587 the output goes to stdout and nothing is printed to stderr.
9588 Additional arguments are always ignored.
9590 Since for each cipher there is a command of the same name,
9591 the 'no-cipher' compilation switches can be tested this way.
9593 ('openssl no-XXX' is not able to detect pseudo-commands such
9594 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
9597 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
9600 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
9601 is set; it will be thrown away anyway because each handshake creates
9603 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
9604 to parameters -- in previous versions (since OpenSSL 0.9.3) the
9605 'default key' from SSL_CTX_set_tmp_dh would always be lost, meaning
9606 you effectivly got SSL_OP_SINGLE_DH_USE when using this macro.
9609 *) New s_client option -ign_eof: EOF at stdin is ignored, and
9610 'Q' and 'R' lose their special meanings (quit/renegotiate).
9611 This is part of what -quiet does; unlike -quiet, -ign_eof
9612 does not suppress any output.
9615 *) Add compatibility options to the purpose and trust code. The
9616 purpose X509_PURPOSE_ANY is "any purpose" which automatically
9617 accepts a certificate or CA, this was the previous behaviour,
9618 with all the associated security issues.
9620 X509_TRUST_COMPAT is the old trust behaviour: only and
9621 automatically trust self signed roots in certificate store. A
9622 new trust setting X509_TRUST_DEFAULT is used to specify that
9623 a purpose has no associated trust setting and it should instead
9624 use the value in the default purpose.
9627 *) Fix the PKCS#8 DSA private key code so it decodes keys again
9628 and fix a memory leak.
9631 *) In util/mkerr.pl (which implements 'make errors'), preserve
9632 reason strings from the previous version of the .c file, as
9633 the default to have only downcase letters (and digits) in
9634 automatically generated reasons codes is not always appropriate.
9637 *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
9638 using strerror. Previously, ERR_reason_error_string() returned
9639 library names as reason strings for SYSerr; but SYSerr is a special
9640 case where small numbers are errno values, not library numbers.
9643 *) Add '-dsaparam' option to 'openssl dhparam' application. This
9644 converts DSA parameters into DH parameters. (When creating parameters,
9645 DSA_generate_parameters is used.)
9648 *) Include 'length' (recommended exponent length) in C code generated
9649 by 'openssl dhparam -C'.
9652 *) The second argument to set_label in perlasm was already being used
9653 so couldn't be used as a "file scope" flag. Moved to third argument
9657 *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
9658 instead of RAND_bytes for encryption IVs and salts.
9661 *) Include RAND_status() into RAND_METHOD instead of implementing
9662 it only for md_rand.c Otherwise replacing the PRNG by calling
9663 RAND_set_rand_method would be impossible.
9666 *) Don't let DSA_generate_key() enter an infinite loop if the random
9667 number generation fails.
9670 *) New 'rand' application for creating pseudo-random output.
9673 *) Added configuration support for Linux/IA64
9674 [Rolf Haberrecker <rolf@suse.de>]
9676 *) Assembler module support for Mingw32.
9679 *) Shared library support for HPUX (in shlib/).
9680 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous]
9682 *) Shared library support for Solaris gcc.
9683 [Lutz Behnke <behnke@trustcenter.de>]
9685 Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
9687 *) PKCS7_encrypt() was adding text MIME headers twice because they
9688 were added manually and by SMIME_crlf_copy().
9691 *) In bntest.c don't call BN_rand with zero bits argument.
9692 [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>]
9694 *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
9695 case was implemented. This caused BN_div_recp() to fail occasionally.
9698 *) Add an optional second argument to the set_label() in the perl
9699 assembly language builder. If this argument exists and is set
9700 to 1 it signals that the assembler should use a symbol whose
9701 scope is the entire file, not just the current function. This
9702 is needed with MASM which uses the format label:: for this scope.
9703 [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>]
9705 *) Change the ASN1 types so they are typedefs by default. Before
9706 almost all types were #define'd to ASN1_STRING which was causing
9707 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
9711 *) Change names of new functions to the new get1/get0 naming
9712 convention: After 'get1', the caller owns a reference count
9713 and has to call ..._free; 'get0' returns a pointer to some
9714 data structure without incrementing reference counters.
9715 (Some of the existing 'get' functions increment a reference
9716 counter, some don't.)
9717 Similarly, 'set1' and 'add1' functions increase reference
9718 counters or duplicate objects.
9721 *) Allow for the possibility of temp RSA key generation failure:
9722 the code used to assume it always worked and crashed on failure.
9725 *) Fix potential buffer overrun problem in BIO_printf().
9726 [Ulf Möller, using public domain code by Patrick Powell; problem
9727 pointed out by David Sacerdote <das33@cornell.edu>]
9729 *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions
9730 RAND_egd() and RAND_status(). In the command line application,
9731 the EGD socket can be specified like a seed file using RANDFILE
9735 *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
9736 Some CAs (e.g. Verisign) distribute certificates in this form.
9739 *) Remove the SSL_ALLOW_ADH compile option and set the default cipher
9740 list to exclude them. This means that no special compilation option
9741 is needed to use anonymous DH: it just needs to be included in the
9745 *) Change the EVP_MD_CTX_type macro so its meaning consistent with
9746 EVP_MD_type. The old functionality is available in a new macro called
9747 EVP_MD_md(). Change code that uses it and update docs.
9750 *) ..._ctrl functions now have corresponding ..._callback_ctrl functions
9751 where the 'void *' argument is replaced by a function pointer argument.
9752 Previously 'void *' was abused to point to functions, which works on
9753 many platforms, but is not correct. As these functions are usually
9754 called by macros defined in OpenSSL header files, most source code
9755 should work without changes.
9758 *) <openssl/opensslconf.h> (which is created by Configure) now contains
9759 sections with information on -D... compiler switches used for
9760 compiling the library so that applications can see them. To enable
9761 one of these sections, a pre-processor symbol OPENSSL_..._DEFINES
9762 must be defined. E.g.,
9763 #define OPENSSL_ALGORITHM_DEFINES
9764 #include <openssl/opensslconf.h>
9765 defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc.
9766 [Richard Levitte, Ulf and Bodo Möller]
9768 *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
9772 *) Change the 'other' type in certificate aux info to a STACK_OF
9773 X509_ALGOR. Although not an AlgorithmIdentifier as such it has
9774 the required ASN1 format: arbitrary types determined by an OID.
9777 *) Add some PEM_write_X509_REQ_NEW() functions and a command line
9778 argument to 'req'. This is not because the function is newer or
9779 better than others it just uses the work 'NEW' in the certificate
9780 request header lines. Some software needs this.
9783 *) Reorganise password command line arguments: now passwords can be
9784 obtained from various sources. Delete the PEM_cb function and make
9785 it the default behaviour: i.e. if the callback is NULL and the
9786 usrdata argument is not NULL interpret it as a null terminated pass
9787 phrase. If usrdata and the callback are NULL then the pass phrase
9788 is prompted for as usual.
9791 *) Add support for the Compaq Atalla crypto accelerator. If it is installed,
9792 the support is automatically enabled. The resulting binaries will
9793 autodetect the card and use it if present.
9794 [Ben Laurie and Compaq Inc.]
9796 *) Work around for Netscape hang bug. This sends certificate request
9797 and server done in one record. Since this is perfectly legal in the
9798 SSL/TLS protocol it isn't a "bug" option and is on by default. See
9799 the bugs/SSLv3 entry for more info.
9802 *) HP-UX tune-up: new unified configs, HP C compiler bug workaround.
9805 *) Add -rand argument to smime and pkcs12 applications and read/write
9809 *) New 'passwd' tool for crypt(3) and apr1 password hashes.
9812 *) Add command line password options to the remaining applications.
9815 *) Bug fix for BN_div_recp() for numerators with an even number of
9819 *) More tests in bntest.c, and changed test_bn output.
9822 *) ./config recognizes MacOS X now.
9825 *) Bug fix for BN_div() when the first words of num and divsor are
9826 equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0).
9829 *) Add support for various broken PKCS#8 formats, and command line
9830 options to produce them.
9833 *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
9834 get temporary BIGNUMs from a BN_CTX.
9837 *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
9841 *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and
9842 include a #define from the old name to the new. The original intent
9843 was that statically linked binaries could for example just call
9844 SSLeay_add_all_ciphers() to just add ciphers to the table and not
9845 link with digests. This never worked because SSLeay_add_all_digests()
9846 and SSLeay_add_all_ciphers() were in the same source file so calling
9847 one would link with the other. They are now in separate source files.
9850 *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
9853 *) Use a less unusual form of the Miller-Rabin primality test (it used
9854 a binary algorithm for exponentiation integrated into the Miller-Rabin
9855 loop, our standard modexp algorithms are faster).
9858 *) Support for the EBCDIC character set completed.
9859 [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>]
9861 *) Source code cleanups: use const where appropriate, eliminate casts,
9862 use void * instead of char * in lhash.
9865 *) Bugfix: ssl3_send_server_key_exchange was not restartable
9866 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
9867 this the server could overwrite ephemeral keys that the client
9871 *) Turn DSA_is_prime into a macro that calls BN_is_prime,
9872 using 50 iterations of the Rabin-Miller test.
9874 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
9875 iterations of the Rabin-Miller test as required by the appendix
9876 to FIPS PUB 186[-1]) instead of DSA_is_prime.
9877 As BN_is_prime_fasttest includes trial division, DSA parameter
9878 generation becomes much faster.
9880 This implies a change for the callback functions in DSA_is_prime
9881 and DSA_generate_parameters: The callback function is called once
9882 for each positive witness in the Rabin-Miller test, not just
9883 occasionally in the inner loop; and the parameters to the
9884 callback function now provide an iteration count for the outer
9885 loop rather than for the current invocation of the inner loop.
9886 DSA_generate_parameters additionally can call the callback
9887 function with an 'iteration count' of -1, meaning that a
9888 candidate has passed the trial division test (when q is generated
9889 from an application-provided seed, trial division is skipped).
9892 *) New function BN_is_prime_fasttest that optionally does trial
9893 division before starting the Rabin-Miller test and has
9894 an additional BN_CTX * argument (whereas BN_is_prime always
9895 has to allocate at least one BN_CTX).
9896 'callback(1, -1, cb_arg)' is called when a number has passed the
9897 trial division stage.
9900 *) Fix for bug in CRL encoding. The validity dates weren't being handled
9904 *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
9907 *) New function BN_pseudo_rand().
9910 *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
9911 bignum version of BN_from_montgomery() with the working code from
9912 SSLeay 0.9.0 (the word based version is faster anyway), and clean up
9916 *) Avoid a race condition in s2_clnt.c (function get_server_hello) that
9917 made it impossible to use the same SSL_SESSION data structure in
9918 SSL2 clients in multiple threads.
9921 *) The return value of RAND_load_file() no longer counts bytes obtained
9922 by stat(). RAND_load_file(..., -1) is new and uses the complete file
9923 to seed the PRNG (previously an explicit byte count was required).
9924 [Ulf Möller, Bodo Möller]
9926 *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
9927 used (char *) instead of (void *) and had casts all over the place.
9930 *) Make BN_generate_prime() return NULL on error if ret!=NULL.
9933 *) Retain source code compatibility for BN_prime_checks macro:
9934 BN_is_prime(..., BN_prime_checks, ...) now uses
9935 BN_prime_checks_for_size to determine the appropriate number of
9936 Rabin-Miller iterations.
9939 *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
9940 DH_CHECK_P_NOT_SAFE_PRIME.
9941 (Check if this is true? OpenPGP calls them "strong".)
9944 *) Merge the functionality of "dh" and "gendh" programs into a new program
9945 "dhparam". The old programs are retained for now but will handle DH keys
9946 (instead of parameters) in future.
9949 *) Make the ciphers, s_server and s_client programs check the return values
9950 when a new cipher list is set.
9953 *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
9954 ciphers. Before when the 56bit ciphers were enabled the sorting was
9957 The syntax for the cipher sorting has been extended to support sorting by
9958 cipher-strength (using the strength_bits hard coded in the tables).
9959 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
9961 Fix a bug in the cipher-command parser: when supplying a cipher command
9962 string with an "undefined" symbol (neither command nor alphanumeric
9963 [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now
9964 an error is flagged.
9966 Due to the strength-sorting extension, the code of the
9967 ssl_create_cipher_list() function was completely rearranged. I hope that
9968 the readability was also increased :-)
9969 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
9971 *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1
9972 for the first serial number and places 2 in the serial number file. This
9973 avoids problems when the root CA is created with serial number zero and
9974 the first user certificate has the same issuer name and serial number
9978 *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
9979 the new code. Add documentation for this stuff.
9982 *) Changes to X509_ATTRIBUTE utilities. These have been renamed from
9983 X509_*() to X509at_*() on the grounds that they don't handle X509
9984 structures and behave in an analogous way to the X509v3 functions:
9985 they shouldn't be called directly but wrapper functions should be used
9988 So we also now have some wrapper functions that call the X509at functions
9989 when passed certificate requests. (TO DO: similar things can be done with
9990 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
9991 things. Some of these need some d2i or i2d and print functionality
9992 because they handle more complex structures.)
9995 *) Add missing #ifndefs that caused missing symbols when building libssl
9996 as a shared library without RSA. Use #ifndef NO_SSL2 instead of
9997 NO_RSA in ssl/s2*.c.
9998 [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller]
10000 *) Precautions against using the PRNG uninitialized: RAND_bytes() now
10001 has a return value which indicates the quality of the random data
10002 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
10003 error queue. New function RAND_pseudo_bytes() generates output that is
10004 guaranteed to be unique but not unpredictable. RAND_add is like
10005 RAND_seed, but takes an extra argument for an entropy estimate
10006 (RAND_seed always assumes full entropy).
10009 *) Do more iterations of Rabin-Miller probable prime test (specifically,
10010 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
10011 instead of only 2 for all lengths; see BN_prime_checks_for_size definition
10012 in crypto/bn/bn_prime.c for the complete table). This guarantees a
10013 false-positive rate of at most 2^-80 for random input.
10016 *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
10019 *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
10020 in the 0.9.5 release), this returns the chain
10021 from an X509_CTX structure with a dup of the stack and all
10022 the X509 reference counts upped: so the stack will exist
10023 after X509_CTX_cleanup() has been called. Modify pkcs12.c
10026 Also make SSL_SESSION_print() print out the verify return
10030 *) Add manpage for the pkcs12 command. Also change the default
10031 behaviour so MAC iteration counts are used unless the new
10032 -nomaciter option is used. This improves file security and
10033 only older versions of MSIE (4.0 for example) need it.
10036 *) Honor the no-xxx Configure options when creating .DEF files.
10039 *) Add PKCS#10 attributes to field table: challengePassword,
10040 unstructuredName and unstructuredAddress. These are taken from
10041 draft PKCS#9 v2.0 but are compatible with v1.2 provided no
10042 international characters are used.
10044 More changes to X509_ATTRIBUTE code: allow the setting of types
10045 based on strings. Remove the 'loc' parameter when adding
10046 attributes because these will be a SET OF encoding which is sorted
10050 *) Initial changes to the 'req' utility to allow request generation
10051 automation. This will allow an application to just generate a template
10052 file containing all the field values and have req construct the
10055 Initial support for X509_ATTRIBUTE handling. Stacks of these are
10056 used all over the place including certificate requests and PKCS#7
10057 structures. They are currently handled manually where necessary with
10058 some primitive wrappers for PKCS#7. The new functions behave in a
10059 manner analogous to the X509 extension functions: they allow
10060 attributes to be looked up by NID and added.
10062 Later something similar to the X509V3 code would be desirable to
10063 automatically handle the encoding, decoding and printing of the
10064 more complex types. The string types like challengePassword can
10065 be handled by the string table functions.
10067 Also modified the multi byte string table handling. Now there is
10068 a 'global mask' which masks out certain types. The table itself
10069 can use the flag STABLE_NO_MASK to ignore the mask setting: this
10070 is useful when for example there is only one permissible type
10071 (as in countryName) and using the mask might result in no valid
10075 *) Clean up 'Finished' handling, and add functions SSL_get_finished and
10076 SSL_get_peer_finished to allow applications to obtain the latest
10077 Finished messages sent to the peer or expected from the peer,
10078 respectively. (SSL_get_peer_finished is usually the Finished message
10079 actually received from the peer, otherwise the protocol will be aborted.)
10081 As the Finished message are message digests of the complete handshake
10082 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
10083 be used for external authentication procedures when the authentication
10084 provided by SSL/TLS is not desired or is not enough.
10087 *) Enhanced support for Alpha Linux is added. Now ./config checks if
10088 the host supports BWX extension and if Compaq C is present on the
10089 $PATH. Just exploiting of the BWX extension results in 20-30%
10090 performance kick for some algorithms, e.g. DES and RC4 to mention
10091 a couple. Compaq C in turn generates ~20% faster code for MD5 and
10095 *) Add support for MS "fast SGC". This is arguably a violation of the
10096 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
10097 weak crypto and after checking the certificate is SGC a second one
10098 with strong crypto. MS SGC stops the first handshake after receiving
10099 the server certificate message and sends a second client hello. Since
10100 a server will typically do all the time consuming operations before
10101 expecting any further messages from the client (server key exchange
10102 is the most expensive) there is little difference between the two.
10104 To get OpenSSL to support MS SGC we have to permit a second client
10105 hello message after we have sent server done. In addition we have to
10106 reset the MAC if we do get this second client hello.
10109 *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide
10110 if a DER encoded private key is RSA or DSA traditional format. Changed
10111 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
10112 format DER encoded private key. Newer code should use PKCS#8 format which
10113 has the key type encoded in the ASN1 structure. Added DER private key
10114 support to pkcs8 application.
10117 *) SSL 3/TLS 1 servers now don't request certificates when an anonymous
10118 ciphersuites has been selected (as required by the SSL 3/TLS 1
10119 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
10120 is set, we interpret this as a request to violate the specification
10121 (the worst that can happen is a handshake failure, and 'correct'
10122 behaviour would result in a handshake failure anyway).
10125 *) In SSL_CTX_add_session, take into account that there might be multiple
10126 SSL_SESSION structures with the same session ID (e.g. when two threads
10127 concurrently obtain them from an external cache).
10128 The internal cache can handle only one SSL_SESSION with a given ID,
10129 so if there's a conflict, we now throw out the old one to achieve
10133 *) Add OIDs for idea and blowfish in CBC mode. This will allow both
10134 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
10135 some routines that use cipher OIDs: some ciphers do not have OIDs
10136 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
10140 *) Simplify the trust setting structure and code. Now we just have
10141 two sequences of OIDs for trusted and rejected settings. These will
10142 typically have values the same as the extended key usage extension
10143 and any application specific purposes.
10145 The trust checking code now has a default behaviour: it will just
10146 check for an object with the same NID as the passed id. Functions can
10147 be provided to override either the default behaviour or the behaviour
10148 for a given id. SSL client, server and email already have functions
10149 in place for compatibility: they check the NID and also return "trusted"
10150 if the certificate is self signed.
10153 *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the
10154 traditional format into an EVP_PKEY structure.
10157 *) Add a password callback function PEM_cb() which either prompts for
10158 a password if usr_data is NULL or otherwise assumes it is a null
10159 terminated password. Allow passwords to be passed on command line
10160 environment or config files in a few more utilities.
10163 *) Add a bunch of DER and PEM functions to handle PKCS#8 format private
10164 keys. Add some short names for PKCS#8 PBE algorithms and allow them
10165 to be specified on the command line for the pkcs8 and pkcs12 utilities.
10166 Update documentation.
10169 *) Support for ASN1 "NULL" type. This could be handled before by using
10170 ASN1_TYPE but there wasn't any function that would try to read a NULL
10171 and produce an error if it couldn't. For compatibility we also have
10172 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
10173 don't allocate anything because they don't need to.
10176 *) Initial support for MacOS is now provided. Examine INSTALL.MacOS
10178 [Andy Polyakov, Roy Woods <roy@centicsystems.ca>]
10180 *) Rebuild of the memory allocation routines used by OpenSSL code and
10181 possibly others as well. The purpose is to make an interface that
10182 provide hooks so anyone can build a separate set of allocation and
10183 deallocation routines to be used by OpenSSL, for example memory
10184 pool implementations, or something else, which was previously hard
10185 since Malloc(), Realloc() and Free() were defined as macros having
10186 the values malloc, realloc and free, respectively (except for Win32
10187 compilations). The same is provided for memory debugging code.
10188 OpenSSL already comes with functionality to find memory leaks, but
10189 this gives people a chance to debug other memory problems.
10191 With these changes, a new set of functions and macros have appeared:
10193 CRYPTO_set_mem_debug_functions() [F]
10194 CRYPTO_get_mem_debug_functions() [F]
10195 CRYPTO_dbg_set_options() [F]
10196 CRYPTO_dbg_get_options() [F]
10197 CRYPTO_malloc_debug_init() [M]
10199 The memory debug functions are NULL by default, unless the library
10200 is compiled with CRYPTO_MDEBUG or friends is defined. If someone
10201 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
10202 gives the standard debugging functions that come with OpenSSL) or
10203 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
10204 provided by the library user) must be used. When the standard
10205 debugging functions are used, CRYPTO_dbg_set_options can be used to
10206 request additional information:
10207 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
10208 the CRYPTO_MDEBUG_xxx macro when compiling the library.
10210 Also, things like CRYPTO_set_mem_functions will always give the
10211 expected result (the new set of functions is used for allocation
10212 and deallocation) at all times, regardless of platform and compiler
10215 To finish it up, some functions that were never use in any other
10216 way than through macros have a new API and new semantic:
10218 CRYPTO_dbg_malloc()
10219 CRYPTO_dbg_realloc()
10222 All macros of value have retained their old syntax.
10223 [Richard Levitte and Bodo Moeller]
10225 *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
10226 ordering of SMIMECapabilities wasn't in "strength order" and there
10227 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
10231 *) Some ASN1 types with illegal zero length encoding (INTEGER,
10232 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
10233 [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson]
10235 *) Merge in my S/MIME library for OpenSSL. This provides a simple
10236 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
10237 functionality to handle multipart/signed properly) and a utility
10238 called 'smime' to call all this stuff. This is based on code I
10239 originally wrote for Celo who have kindly allowed it to be
10240 included in OpenSSL.
10243 *) Add variants des_set_key_checked and des_set_key_unchecked of
10244 des_set_key (aka des_key_sched). Global variable des_check_key
10245 decides which of these is called by des_set_key; this way
10246 des_check_key behaves as it always did, but applications and
10247 the library itself, which was buggy for des_check_key == 1,
10248 have a cleaner way to pick the version they need.
10251 *) New function PKCS12_newpass() which changes the password of a
10255 *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and
10256 dynamic mix. In both cases the ids can be used as an index into the
10257 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
10258 functions so they accept a list of the field values and the
10259 application doesn't need to directly manipulate the X509_TRUST
10263 *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
10267 *) Modify the way the V3 extension code looks up extensions. This now
10268 works in a similar way to the object code: we have some "standard"
10269 extensions in a static table which is searched with OBJ_bsearch()
10270 and the application can add dynamic ones if needed. The file
10271 crypto/x509v3/ext_dat.h now has the info: this file needs to be
10272 updated whenever a new extension is added to the core code and kept
10273 in ext_nid order. There is a simple program 'tabtest.c' which checks
10274 this. New extensions are not added too often so this file can readily
10275 be maintained manually.
10277 There are two big advantages in doing things this way. The extensions
10278 can be looked up immediately and no longer need to be "added" using
10279 X509V3_add_standard_extensions(): this function now does nothing.
10280 [Side note: I get *lots* of email saying the extension code doesn't
10281 work because people forget to call this function]
10282 Also no dynamic allocation is done unless new extensions are added:
10283 so if we don't add custom extensions there is no need to call
10284 X509V3_EXT_cleanup().
10287 *) Modify enc utility's salting as follows: make salting the default. Add a
10288 magic header, so unsalted files fail gracefully instead of just decrypting
10289 to garbage. This is because not salting is a big security hole, so people
10290 should be discouraged from doing it.
10293 *) Fixes and enhancements to the 'x509' utility. It allowed a message
10294 digest to be passed on the command line but it only used this
10295 parameter when signing a certificate. Modified so all relevant
10296 operations are affected by the digest parameter including the
10297 -fingerprint and -x509toreq options. Also -x509toreq choked if a
10298 DSA key was used because it didn't fix the digest.
10301 *) Initial certificate chain verify code. Currently tests the untrusted
10302 certificates for consistency with the verify purpose (which is set
10303 when the X509_STORE_CTX structure is set up) and checks the pathlength.
10305 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
10306 this is because it will reject chains with invalid extensions whereas
10307 every previous version of OpenSSL and SSLeay made no checks at all.
10309 Trust code: checks the root CA for the relevant trust settings. Trust
10310 settings have an initial value consistent with the verify purpose: e.g.
10311 if the verify purpose is for SSL client use it expects the CA to be
10312 trusted for SSL client use. However the default value can be changed to
10313 permit custom trust settings: one example of this would be to only trust
10314 certificates from a specific "secure" set of CAs.
10316 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
10317 which should be used for version portability: especially since the
10318 verify structure is likely to change more often now.
10320 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
10321 to set them. If not set then assume SSL clients will verify SSL servers
10324 Two new options to the verify program: -untrusted allows a set of
10325 untrusted certificates to be passed in and -purpose which sets the
10326 intended purpose of the certificate. If a purpose is set then the
10327 new chain verify code is used to check extension consistency.
10330 *) Support for the authority information access extension.
10333 *) Modify RSA and DSA PEM read routines to transparently handle
10334 PKCS#8 format private keys. New *_PUBKEY_* functions that handle
10335 public keys in a format compatible with certificate
10336 SubjectPublicKeyInfo structures. Unfortunately there were already
10337 functions called *_PublicKey_* which used various odd formats so
10338 these are retained for compatibility: however the DSA variants were
10339 never in a public release so they have been deleted. Changed dsa/rsa
10340 utilities to handle the new format: note no releases ever handled public
10341 keys so we should be OK.
10343 The primary motivation for this change is to avoid the same fiasco
10344 that dogs private keys: there are several incompatible private key
10345 formats some of which are standard and some OpenSSL specific and
10346 require various evil hacks to allow partial transparent handling and
10347 even then it doesn't work with DER formats. Given the option anything
10348 other than PKCS#8 should be dumped: but the other formats have to
10349 stay in the name of compatibility.
10351 With public keys and the benefit of hindsight one standard format
10352 is used which works with EVP_PKEY, RSA or DSA structures: though
10353 it clearly returns an error if you try to read the wrong kind of key.
10355 Added a -pubkey option to the 'x509' utility to output the public key.
10356 Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*()
10357 (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add
10358 EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*())
10359 that do the same as the EVP_PKEY_assign_*() except they up the
10360 reference count of the added key (they don't "swallow" the
10364 *) Fixes to crypto/x509/by_file.c the code to read in certificates and
10365 CRLs would fail if the file contained no certificates or no CRLs:
10366 added a new function to read in both types and return the number
10367 read: this means that if none are read it will be an error. The
10368 DER versions of the certificate and CRL reader would always fail
10369 because it isn't possible to mix certificates and CRLs in DER format
10370 without choking one or the other routine. Changed this to just read
10371 a certificate: this is the best we can do. Also modified the code
10372 in apps/verify.c to take notice of return codes: it was previously
10373 attempting to read in certificates from NULL pointers and ignoring
10374 any errors: this is one reason why the cert and CRL reader seemed
10375 to work. It doesn't check return codes from the default certificate
10376 routines: these may well fail if the certificates aren't installed.
10379 *) Code to support otherName option in GeneralName.
10382 *) First update to verify code. Change the verify utility
10383 so it warns if it is passed a self signed certificate:
10384 for consistency with the normal behaviour. X509_verify
10385 has been modified to it will now verify a self signed
10386 certificate if *exactly* the same certificate appears
10387 in the store: it was previously impossible to trust a
10388 single self signed certificate. This means that:
10389 openssl verify ss.pem
10390 now gives a warning about a self signed certificate but
10391 openssl verify -CAfile ss.pem ss.pem
10395 *) For servers, store verify_result in SSL_SESSION data structure
10396 (and add it to external session representation).
10397 This is needed when client certificate verifications fails,
10398 but an application-provided verification callback (set by
10399 SSL_CTX_set_cert_verify_callback) allows accepting the session
10400 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
10401 but returns 1): When the session is reused, we have to set
10402 ssl->verify_result to the appropriate error code to avoid
10404 [Bodo Moeller, problem pointed out by Lutz Jaenicke]
10406 *) Fix a bug in the new PKCS#7 code: it didn't consider the
10407 case in PKCS7_dataInit() where the signed PKCS7 structure
10408 didn't contain any existing data because it was being created.
10409 [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson]
10411 *) Add a salt to the key derivation routines in enc.c. This
10412 forms the first 8 bytes of the encrypted file. Also add a
10413 -S option to allow a salt to be input on the command line.
10416 *) New function X509_cmp(). Oddly enough there wasn't a function
10417 to compare two certificates. We do this by working out the SHA1
10418 hash and comparing that. X509_cmp() will be needed by the trust
10422 *) SSL_get1_session() is like SSL_get_session(), but increments
10423 the reference count in the SSL_SESSION returned.
10424 [Geoff Thorpe <geoff@eu.c2.net>]
10426 *) Fix for 'req': it was adding a null to request attributes.
10427 Also change the X509_LOOKUP and X509_INFO code to handle
10428 certificate auxiliary information.
10431 *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document
10435 *) Add the possibility to add extra information to the memory leak
10436 detecting output, to form tracebacks, showing from where each
10437 allocation was originated: CRYPTO_push_info("constant string") adds
10438 the string plus current file name and line number to a per-thread
10439 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
10440 is like calling CYRPTO_pop_info() until the stack is empty.
10441 Also updated memory leak detection code to be multi-thread-safe.
10444 *) Add options -text and -noout to pkcs7 utility and delete the
10445 encryption options which never did anything. Update docs.
10448 *) Add options to some of the utilities to allow the pass phrase
10449 to be included on either the command line (not recommended on
10450 OSes like Unix) or read from the environment. Update the
10451 manpages and fix a few bugs.
10454 *) Add a few manpages for some of the openssl commands.
10457 *) Fix the -revoke option in ca. It was freeing up memory twice,
10458 leaking and not finding already revoked certificates.
10461 *) Extensive changes to support certificate auxiliary information.
10462 This involves the use of X509_CERT_AUX structure and X509_AUX
10463 functions. An X509_AUX function such as PEM_read_X509_AUX()
10464 can still read in a certificate file in the usual way but it
10465 will also read in any additional "auxiliary information". By
10466 doing things this way a fair degree of compatibility can be
10467 retained: existing certificates can have this information added
10468 using the new 'x509' options.
10470 Current auxiliary information includes an "alias" and some trust
10471 settings. The trust settings will ultimately be used in enhanced
10472 certificate chain verification routines: currently a certificate
10473 can only be trusted if it is self signed and then it is trusted
10477 *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD).
10478 The problem was that one of the replacement routines had not been working
10479 since SSLeay releases. For now the offending routine has been replaced
10480 with non-optimised assembler. Even so, this now gives around 95%
10481 performance improvement for 1024 bit RSA signs.
10484 *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2
10485 handling. Most clients have the effective key size in bits equal to
10486 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
10487 A few however don't do this and instead use the size of the decrypted key
10488 to determine the RC2 key length and the AlgorithmIdentifier to determine
10489 the effective key length. In this case the effective key length can still
10490 be 40 bits but the key length can be 168 bits for example. This is fixed
10491 by manually forcing an RC2 key into the EVP_PKEY structure because the
10492 EVP code can't currently handle unusual RC2 key sizes: it always assumes
10493 the key length and effective key length are equal.
10496 *) Add a bunch of functions that should simplify the creation of
10497 X509_NAME structures. Now you should be able to do:
10498 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
10499 and have it automatically work out the correct field type and fill in
10500 the structures. The more adventurous can try:
10501 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
10502 and it will (hopefully) work out the correct multibyte encoding.
10505 *) Change the 'req' utility to use the new field handling and multibyte
10506 copy routines. Before the DN field creation was handled in an ad hoc
10507 way in req, ca, and x509 which was rather broken and didn't support
10508 BMPStrings or UTF8Strings. Since some software doesn't implement
10509 BMPStrings or UTF8Strings yet, they can be enabled using the config file
10510 using the dirstring_type option. See the new comment in the default
10511 openssl.cnf for more info.
10514 *) Make crypto/rand/md_rand.c more robust:
10515 - Assure unique random numbers after fork().
10516 - Make sure that concurrent threads access the global counter and
10517 md serializably so that we never lose entropy in them
10518 or use exactly the same state in multiple threads.
10519 Access to the large state is not always serializable because
10520 the additional locking could be a performance killer, and
10521 md should be large enough anyway.
10524 *) New file apps/app_rand.c with commonly needed functionality
10525 for handling the random seed file.
10527 Use the random seed file in some applications that previously did not:
10529 dsaparam -genkey (which also ignored its '-rand' option),
10532 x509 (when signing).
10533 Except on systems with /dev/urandom, it is crucial to have a random
10534 seed file at least for key creation, DSA signing, and for DH exchanges;
10535 for RSA signatures we could do without one.
10537 gendh and gendsa (unlike genrsa) used to read only the first byte
10538 of each file listed in the '-rand' option. The function as previously
10539 found in genrsa is now in app_rand.c and is used by all programs
10540 that support '-rand'.
10543 *) In RAND_write_file, use mode 0600 for creating files;
10544 don't just chmod when it may be too late.
10547 *) Report an error from X509_STORE_load_locations
10548 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
10551 *) New function ASN1_mbstring_copy() this copies a string in either
10552 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
10553 into an ASN1_STRING type. A mask of permissible types is passed
10554 and it chooses the "minimal" type to use or an error if not type
10558 *) Add function equivalents to the various macros in asn1.h. The old
10559 macros are retained with an M_ prefix. Code inside the library can
10560 use the M_ macros. External code (including the openssl utility)
10561 should *NOT* in order to be "shared library friendly".
10564 *) Add various functions that can check a certificate's extensions
10565 to see if it usable for various purposes such as SSL client,
10566 server or S/MIME and CAs of these types. This is currently
10567 VERY EXPERIMENTAL but will ultimately be used for certificate chain
10568 verification. Also added a -purpose flag to x509 utility to
10569 print out all the purposes.
10572 *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated
10576 *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search
10577 for, obtain and decode and extension and obtain its critical flag.
10578 This allows all the necessary extension code to be handled in a
10579 single function call.
10582 *) RC4 tune-up featuring 30-40% performance improvement on most RISC
10583 platforms. See crypto/rc4/rc4_enc.c for further details.
10586 *) New -noout option to asn1parse. This causes no output to be produced
10587 its main use is when combined with -strparse and -out to extract data
10588 from a file (which may not be in ASN.1 format).
10591 *) Fix for pkcs12 program. It was hashing an invalid certificate pointer
10592 when producing the local key id.
10593 [Richard Levitte <levitte@stacken.kth.se>]
10595 *) New option -dhparam in s_server. This allows a DH parameter file to be
10596 stated explicitly. If it is not stated then it tries the first server
10597 certificate file. The previous behaviour hard coded the filename
10601 *) Add -pubin and -pubout options to the rsa and dsa commands. These allow
10602 a public key to be input or output. For example:
10603 openssl rsa -in key.pem -pubout -out pubkey.pem
10604 Also added necessary DSA public key functions to handle this.
10607 *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
10608 in the message. This was handled by allowing
10609 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
10610 [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>]
10612 *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
10613 to the end of the strings whereas this didn't. This would cause problems
10614 if strings read with d2i_ASN1_bytes() were later modified.
10615 [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>]
10617 *) Fix for base64 decode bug. When a base64 bio reads only one line of
10618 data and it contains EOF it will end up returning an error. This is
10619 caused by input 46 bytes long. The cause is due to the way base64
10620 BIOs find the start of base64 encoded data. They do this by trying a
10621 trial decode on each line until they find one that works. When they
10622 do a flag is set and it starts again knowing it can pass all the
10623 data directly through the decoder. Unfortunately it doesn't reset
10624 the context it uses. This means that if EOF is reached an attempt
10625 is made to pass two EOFs through the context and this causes the
10626 resulting error. This can also cause other problems as well. As is
10627 usual with these problems it takes *ages* to find and the fix is
10628 trivial: move one line.
10629 [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ]
10631 *) Ugly workaround to get s_client and s_server working under Windows. The
10632 old code wouldn't work because it needed to select() on sockets and the
10633 tty (for keypresses and to see if data could be written). Win32 only
10634 supports select() on sockets so we select() with a 1s timeout on the
10635 sockets and then see if any characters are waiting to be read, if none
10636 are present then we retry, we also assume we can always write data to
10637 the tty. This isn't nice because the code then blocks until we've
10638 received a complete line of data and it is effectively polling the
10639 keyboard at 1s intervals: however it's quite a bit better than not
10640 working at all :-) A dedicated Windows application might handle this
10641 with an event loop for example.
10644 *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
10645 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
10646 will be called when RSA_sign() and RSA_verify() are used. This is useful
10647 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
10648 For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
10649 should *not* be used: RSA_sign() and RSA_verify() must be used instead.
10650 This necessitated the support of an extra signature type NID_md5_sha1
10651 for SSL signatures and modifications to the SSL library to use it instead
10652 of calling RSA_public_decrypt() and RSA_private_encrypt().
10655 *) Add new -verify -CAfile and -CApath options to the crl program, these
10656 will lookup a CRL issuers certificate and verify the signature in a
10657 similar way to the verify program. Tidy up the crl program so it
10658 no longer accesses structures directly. Make the ASN1 CRL parsing a bit
10659 less strict. It will now permit CRL extensions even if it is not
10660 a V2 CRL: this will allow it to tolerate some broken CRLs.
10663 *) Initialize all non-automatic variables each time one of the openssl
10664 sub-programs is started (this is necessary as they may be started
10665 multiple times from the "OpenSSL>" prompt).
10666 [Lennart Bang, Bodo Moeller]
10668 *) Preliminary compilation option RSA_NULL which disables RSA crypto without
10669 removing all other RSA functionality (this is what NO_RSA does). This
10670 is so (for example) those in the US can disable those operations covered
10671 by the RSA patent while allowing storage and parsing of RSA keys and RSA
10675 *) Non-copying interface to BIO pairs.
10676 (still largely untested)
10679 *) New function ANS1_tag2str() to convert an ASN1 tag to a descriptive
10680 ASCII string. This was handled independently in various places before.
10683 *) New functions UTF8_getc() and UTF8_putc() that parse and generate
10684 UTF8 strings a character at a time.
10687 *) Use client_version from client hello to select the protocol
10688 (s23_srvr.c) and for RSA client key exchange verification
10689 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
10692 *) Add various utility functions to handle SPKACs, these were previously
10693 handled by poking round in the structure internals. Added new function
10694 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
10695 print, verify and generate SPKACs. Based on an original idea from
10696 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
10699 *) RIPEMD160 is operational on all platforms and is back in 'make test'.
10702 *) Allow the config file extension section to be overwritten on the
10703 command line. Based on an original idea from Massimiliano Pala
10704 <madwolf@comune.modena.it>. The new option is called -extensions
10705 and can be applied to ca, req and x509. Also -reqexts to override
10706 the request extensions in req and -crlexts to override the crl extensions
10710 *) Add new feature to the SPKAC handling in ca. Now you can include
10711 the same field multiple times by preceding it by "XXXX." for example:
10714 this is the same syntax as used in the req config file.
10717 *) Allow certificate extensions to be added to certificate requests. These
10718 are specified in a 'req_extensions' option of the req section of the
10719 config file. They can be printed out with the -text option to req but
10720 are otherwise ignored at present.
10723 *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
10724 data read consists of only the final block it would not decrypted because
10725 EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
10726 A misplaced 'break' also meant the decrypted final block might not be
10727 copied until the next read.
10730 *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
10731 a few extra parameters to the DH structure: these will be useful if
10732 for example we want the value of 'q' or implement X9.42 DH.
10735 *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and
10736 provides hooks that allow the default DSA functions or functions on a
10737 "per key" basis to be replaced. This allows hardware acceleration and
10738 hardware key storage to be handled without major modification to the
10739 library. Also added low level modexp hooks and CRYPTO_EX structure and
10740 associated functions.
10743 *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
10744 as "read only": it can't be written to and the buffer it points to will
10745 not be freed. Reading from a read only BIO is much more efficient than
10746 a normal memory BIO. This was added because there are several times when
10747 an area of memory needs to be read from a BIO. The previous method was
10748 to create a memory BIO and write the data to it, this results in two
10749 copies of the data and an O(n^2) reading algorithm. There is a new
10750 function BIO_new_mem_buf() which creates a read only memory BIO from
10751 an area of memory. Also modified the PKCS#7 routines to use read only
10755 *) Bugfix: ssl23_get_client_hello did not work properly when called in
10756 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
10757 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
10758 but a retry condition occurred while trying to read the rest.
10761 *) The PKCS7_ENC_CONTENT_new() function was setting the content type as
10762 NID_pkcs7_encrypted by default: this was wrong since this should almost
10763 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
10764 the encrypted data type: this is a more sensible place to put it and it
10765 allows the PKCS#12 code to be tidied up that duplicated this
10769 *) Changed obj_dat.pl script so it takes its input and output files on
10770 the command line. This should avoid shell escape redirection problems
10774 *) Initial support for certificate extension requests, these are included
10775 in things like Xenroll certificate requests. Included functions to allow
10776 extensions to be obtained and added.
10779 *) -crlf option to s_client and s_server for sending newlines as
10780 CRLF (as required by many protocols).
10783 Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
10785 *) Install libRSAglue.a when OpenSSL is built with RSAref.
10786 [Ralf S. Engelschall]
10788 *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency.
10789 [Andrija Antonijevic <TheAntony2@bigfoot.com>]
10791 *) Fix -startdate and -enddate (which was missing) arguments to 'ca'
10795 *) New function DSA_dup_DH, which duplicates DSA parameters/keys as
10796 DH parameters/keys (q is lost during that conversion, but the resulting
10797 DH parameters contain its length).
10799 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
10800 much faster than DH_generate_parameters (which creates parameters
10801 where p = 2*q + 1), and also the smaller q makes DH computations
10802 much more efficient (160-bit exponentiation instead of 1024-bit
10803 exponentiation); so this provides a convenient way to support DHE
10804 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
10805 utter importance to use
10806 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
10808 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
10809 when such DH parameters are used, because otherwise small subgroup
10810 attacks may become possible!
10813 *) Avoid memory leak in i2d_DHparams.
10816 *) Allow the -k option to be used more than once in the enc program:
10817 this allows the same encrypted message to be read by multiple recipients.
10820 *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
10821 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
10822 it will always use the numerical form of the OID, even if it has a short
10826 *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
10827 method only got called if p,q,dmp1,dmq1,iqmp components were present,
10828 otherwise bn_mod_exp was called. In the case of hardware keys for example
10829 no private key components need be present and it might store extra data
10830 in the RSA structure, which cannot be accessed from bn_mod_exp.
10831 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
10832 private key operations.
10835 *) Added support for SPARC Linux.
10838 *) pem_password_cb function type incompatibly changed from
10839 typedef int pem_password_cb(char *buf, int size, int rwflag);
10841 ....(char *buf, int size, int rwflag, void *userdata);
10842 so that applications can pass data to their callbacks:
10843 The PEM[_ASN1]_{read,write}... functions and macros now take an
10844 additional void * argument, which is just handed through whenever
10845 the password callback is called.
10846 [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller]
10848 New function SSL_CTX_set_default_passwd_cb_userdata.
10850 Compatibility note: As many C implementations push function arguments
10851 onto the stack in reverse order, the new library version is likely to
10852 interoperate with programs that have been compiled with the old
10853 pem_password_cb definition (PEM_whatever takes some data that
10854 happens to be on the stack as its last argument, and the callback
10855 just ignores this garbage); but there is no guarantee whatsoever that
10858 *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
10859 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
10860 problems not only on Windows, but also on some Unix platforms.
10861 To avoid problematic command lines, these definitions are now in an
10862 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
10863 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
10866 *) MIPS III/IV assembler module is reimplemented.
10869 *) More DES library cleanups: remove references to srand/rand and
10870 delete an unused file.
10873 *) Add support for the the free Netwide assembler (NASM) under Win32,
10874 since not many people have MASM (ml) and it can be hard to obtain.
10875 This is currently experimental but it seems to work OK and pass all
10876 the tests. Check out INSTALL.W32 for info.
10879 *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
10880 without temporary keys kept an extra copy of the server key,
10881 and connections with temporary keys did not free everything in case
10885 *) New function RSA_check_key and new openssl rsa option -check
10886 for verifying the consistency of RSA keys.
10887 [Ulf Moeller, Bodo Moeller]
10889 *) Various changes to make Win32 compile work:
10890 1. Casts to avoid "loss of data" warnings in p5_crpt2.c
10891 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
10892 comparison" warnings.
10893 3. Add sk_<TYPE>_sort to DEF file generator and do make update.
10896 *) Add a debugging option to PKCS#5 v2 key generation function: when
10897 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
10898 derived keys are printed to stderr.
10901 *) Copy the flags in ASN1_STRING_dup().
10902 [Roman E. Pavlov <pre@mo.msk.ru>]
10904 *) The x509 application mishandled signing requests containing DSA
10905 keys when the signing key was also DSA and the parameters didn't match.
10907 It was supposed to omit the parameters when they matched the signing key:
10908 the verifying software was then supposed to automatically use the CA's
10909 parameters if they were absent from the end user certificate.
10911 Omitting parameters is no longer recommended. The test was also
10912 the wrong way round! This was probably due to unusual behaviour in
10913 EVP_cmp_parameters() which returns 1 if the parameters match.
10914 This meant that parameters were omitted when they *didn't* match and
10915 the certificate was useless. Certificates signed with 'ca' didn't have
10917 [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>]
10919 *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
10920 The interface is as follows:
10921 Applications can use
10922 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
10923 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
10924 "off" is now the default.
10925 The library internally uses
10926 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
10927 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
10928 to disable memory-checking temporarily.
10930 Some inconsistent states that previously were possible (and were
10931 even the default) are now avoided.
10933 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
10934 with each memory chunk allocated; this is occasionally more helpful
10935 than just having a counter.
10937 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
10939 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
10943 *) Introduce "mode" for SSL structures (with defaults in SSL_CTX),
10944 which largely parallels "options", but is for changing API behaviour,
10945 whereas "options" are about protocol behaviour.
10946 Initial "mode" flags are:
10948 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when
10949 a single record has been written.
10950 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write
10951 retries use the same buffer location.
10952 (But all of the contents must be
10956 *) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options
10959 *) Fix problems with no-hmac etc.
10960 [Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>]
10962 *) New functions RSA_get_default_method(), RSA_set_method() and
10963 RSA_get_method(). These allows replacement of RSA_METHODs without having
10964 to mess around with the internals of an RSA structure.
10967 *) Fix memory leaks in DSA_do_sign and DSA_is_prime.
10968 Also really enable memory leak checks in openssl.c and in some
10970 [Chad C. Mulligan, Bodo Moeller]
10972 *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
10973 up the length of negative integers. This has now been simplified to just
10974 store the length when it is first determined and use it later, rather
10975 than trying to keep track of where data is copied and updating it to
10977 [Steve Henson, reported by Brien Wheeler
10978 <bwheeler@authentica-security.com>]
10980 *) Add a new function PKCS7_signatureVerify. This allows the verification
10981 of a PKCS#7 signature but with the signing certificate passed to the
10982 function itself. This contrasts with PKCS7_dataVerify which assumes the
10983 certificate is present in the PKCS#7 structure. This isn't always the
10984 case: certificates can be omitted from a PKCS#7 structure and be
10985 distributed by "out of band" means (such as a certificate database).
10988 *) Complete the PEM_* macros with DECLARE_PEM versions to replace the
10989 function prototypes in pem.h, also change util/mkdef.pl to add the
10990 necessary function names.
10993 *) mk1mf.pl (used by Windows builds) did not properly read the
10994 options set by Configure in the top level Makefile, and Configure
10995 was not even able to write more than one option correctly.
10996 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
10999 *) New functions CONF_load_bio() and CONF_load_fp() to allow a config
11000 file to be loaded from a BIO or FILE pointer. The BIO version will
11001 for example allow memory BIOs to contain config info.
11004 *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
11005 Whoever hopes to achieve shared-library compatibility across versions
11006 must use this, not the compile-time macro.
11007 (Exercise 0.9.4: Which is the minimum library version required by
11009 Note: All this applies only to multi-threaded programs, others don't
11013 *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests
11014 through a BIO pair triggered the default case, i.e.
11015 SSLerr(...,SSL_R_UNKNOWN_STATE).
11018 *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
11019 can use the SSL library even if none of the specific BIOs is
11023 *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
11024 for the encoded length.
11025 [Jeon KyoungHo <khjeon@sds.samsung.co.kr>]
11027 *) Add initial documentation of the X509V3 functions.
11030 *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and
11031 PEM_write_bio_PKCS8PrivateKey() that are equivalent to
11032 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
11033 secure PKCS#8 private key format with a high iteration count.
11036 *) Fix determination of Perl interpreter: A perl or perl5
11037 _directory_ in $PATH was also accepted as the interpreter.
11038 [Ralf S. Engelschall]
11040 *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking
11041 wrong with it but it was very old and did things like calling
11042 PEM_ASN1_read() directly and used MD5 for the hash not to mention some
11043 unusual formatting.
11046 *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed
11047 to use the new extension code.
11050 *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
11051 with macros. This should make it easier to change their form, add extra
11052 arguments etc. Fix a few PEM prototypes which didn't have cipher as a
11056 *) Add to configuration table a new entry that can specify an alternative
11057 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
11058 according to Mark Crispin <MRC@Panda.COM>.
11062 *) DES CBC did not update the IV. Weird.
11065 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
11066 Changing the behaviour of the former might break existing programs --
11067 where IV updating is needed, des_ncbc_encrypt can be used.
11070 *) When bntest is run from "make test" it drives bc to check its
11071 calculations, as well as internally checking them. If an internal check
11072 fails, it needs to cause bc to give a non-zero result or make test carries
11073 on without noticing the failure. Fixed.
11076 *) DES library cleanups.
11079 *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
11080 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
11081 ciphers. NOTE: although the key derivation function has been verified
11082 against some published test vectors it has not been extensively tested
11083 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
11087 *) Instead of "mkdir -p", which is not fully portable, use new
11088 Perl script "util/mkdir-p.pl".
11091 *) Rewrite the way password based encryption (PBE) is handled. It used to
11092 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
11093 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
11094 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
11095 the 'parameter' field of the AlgorithmIdentifier is passed to the
11096 underlying key generation function so it must do its own ASN1 parsing.
11097 This has also changed the EVP_PBE_CipherInit() function which now has a
11098 'parameter' argument instead of literal salt and iteration count values
11099 and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
11102 *) Support for PKCS#5 v1.5 compatible password based encryption algorithms
11103 and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
11104 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
11105 KEY" because this clashed with PKCS#8 unencrypted string. Since this
11106 value was just used as a "magic string" and not used directly its
11107 value doesn't matter.
11110 *) Introduce some semblance of const correctness to BN. Shame C doesn't
11114 *) "linux-sparc64" configuration (ultrapenguin).
11115 [Ray Miller <ray.miller@oucs.ox.ac.uk>]
11116 "linux-sparc" configuration.
11117 [Christian Forster <fo@hawo.stw.uni-erlangen.de>]
11119 *) config now generates no-xxx options for missing ciphers.
11122 *) Support the EBCDIC character set (work in progress).
11123 File ebcdic.c not yet included because it has a different license.
11124 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
11126 *) Support BS2000/OSD-POSIX.
11127 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
11129 *) Make callbacks for key generation use void * instead of char *.
11132 *) Make S/MIME samples compile (not yet tested).
11135 *) Additional typesafe stacks.
11138 *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
11142 Changes between 0.9.3 and 0.9.3a [29 May 1999]
11144 *) New configuration variant "sco5-gcc".
11146 *) Updated some demos.
11147 [Sean O Riordain, Wade Scholine]
11149 *) Add missing BIO_free at exit of pkcs12 application.
11152 *) Fix memory leak in conf.c.
11155 *) Updates for Win32 to assembler version of MD5.
11158 *) Set #! path to perl in apps/der_chop to where we found it
11159 instead of using a fixed path.
11162 *) SHA library changes for irix64-mips4-cc.
11165 *) Improvements for VMS support.
11169 Changes between 0.9.2b and 0.9.3 [24 May 1999]
11171 *) Bignum library bug fix. IRIX 6 passes "make test" now!
11172 This also avoids the problems with SC4.2 and unpatched SC5.
11173 [Andy Polyakov <appro@fy.chalmers.se>]
11175 *) New functions sk_num, sk_value and sk_set to replace the previous macros.
11176 These are required because of the typesafe stack would otherwise break
11177 existing code. If old code used a structure member which used to be STACK
11178 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
11179 sk_num or sk_value it would produce an error because the num, data members
11180 are not present in STACK_OF. Now it just produces a warning. sk_set
11181 replaces the old method of assigning a value to sk_value
11182 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
11183 that does this will no longer work (and should use sk_set instead) but
11184 this could be regarded as a "questionable" behaviour anyway.
11187 *) Fix most of the other PKCS#7 bugs. The "experimental" code can now
11188 correctly handle encrypted S/MIME data.
11191 *) Change type of various DES function arguments from des_cblock
11192 (which means, in function argument declarations, pointer to char)
11193 to des_cblock * (meaning pointer to array with 8 char elements),
11194 which allows the compiler to do more typechecking; it was like
11195 that back in SSLeay, but with lots of ugly casts.
11197 Introduce new type const_des_cblock.
11200 *) Reorganise the PKCS#7 library and get rid of some of the more obvious
11201 problems: find RecipientInfo structure that matches recipient certificate
11202 and initialise the ASN1 structures properly based on passed cipher.
11205 *) Belatedly make the BN tests actually check the results.
11208 *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
11209 to and from BNs: it was completely broken. New compilation option
11210 NEG_PUBKEY_BUG to allow for some broken certificates that encode public
11211 key elements as negative integers.
11214 *) Reorganize and speed up MD5.
11215 [Andy Polyakov <appro@fy.chalmers.se>]
11218 [Richard Levitte <richard@levitte.org>]
11220 *) New option -out to asn1parse to allow the parsed structure to be
11221 output to a file. This is most useful when combined with the -strparse
11222 option to examine the output of things like OCTET STRINGS.
11225 *) Make SSL library a little more fool-proof by not requiring any longer
11226 that SSL_set_{accept,connect}_state be called before
11227 SSL_{accept,connect} may be used (SSL_set_..._state is omitted
11228 in many applications because usually everything *appeared* to work as
11229 intended anyway -- now it really works as intended).
11232 *) Move openssl.cnf out of lib/.
11235 *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall
11236 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
11237 -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+
11238 [Ralf S. Engelschall]
11240 *) Various fixes to the EVP and PKCS#7 code. It may now be able to
11241 handle PKCS#7 enveloped data properly.
11242 [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve]
11244 *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
11245 copying pointers. The cert_st handling is changed by this in
11246 various ways (and thus what used to be known as ctx->default_cert
11247 is now called ctx->cert, since we don't resort to s->ctx->[default_]cert
11248 any longer when s->cert does not give us what we need).
11249 ssl_cert_instantiate becomes obsolete by this change.
11250 As soon as we've got the new code right (possibly it already is?),
11251 we have solved a couple of bugs of the earlier code where s->cert
11252 was used as if it could not have been shared with other SSL structures.
11254 Note that using the SSL API in certain dirty ways now will result
11255 in different behaviour than observed with earlier library versions:
11256 Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx)
11257 does not influence s as it used to.
11259 In order to clean up things more thoroughly, inside SSL_SESSION
11260 we don't use CERT any longer, but a new structure SESS_CERT
11261 that holds per-session data (if available); currently, this is
11262 the peer's certificate chain and, for clients, the server's certificate
11263 and temporary key. CERT holds only those values that can have
11264 meaningful defaults in an SSL_CTX.
11267 *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
11268 from the internal representation. Various PKCS#7 fixes: remove some
11269 evil casts and set the enc_dig_alg field properly based on the signing
11273 *) Allow PKCS#12 password to be set from the command line or the
11274 environment. Let 'ca' get its config file name from the environment
11275 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
11279 *) Allow certificate policies extension to use an IA5STRING for the
11280 organization field. This is contrary to the PKIX definition but
11281 VeriSign uses it and IE5 only recognises this form. Document 'x509'
11285 *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
11286 without disallowing inline assembler and the like for non-pedantic builds.
11289 *) Support Borland C++ builder.
11290 [Janez Jere <jj@void.si>, modified by Ulf Möller]
11292 *) Support Mingw32.
11295 *) SHA-1 cleanups and performance enhancements.
11296 [Andy Polyakov <appro@fy.chalmers.se>]
11298 *) Sparc v8plus assembler for the bignum library.
11299 [Andy Polyakov <appro@fy.chalmers.se>]
11301 *) Accept any -xxx and +xxx compiler options in Configure.
11304 *) Update HPUX configuration.
11307 *) Add missing sk_<type>_unshift() function to safestack.h
11308 [Ralf S. Engelschall]
11310 *) New function SSL_CTX_use_certificate_chain_file that sets the
11311 "extra_cert"s in addition to the certificate. (This makes sense
11312 only for "PEM" format files, as chains as a whole are not
11316 *) Support verify_depth from the SSL API.
11317 x509_vfy.c had what can be considered an off-by-one-error:
11318 Its depth (which was not part of the external interface)
11319 was actually counting the number of certificates in a chain;
11320 now it really counts the depth.
11323 *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
11324 instead of X509err, which often resulted in confusing error
11325 messages since the error codes are not globally unique
11326 (e.g. an alleged error in ssl3_accept when a certificate
11327 didn't match the private key).
11329 *) New function SSL_CTX_set_session_id_context that allows to set a default
11330 value (so that you don't need SSL_set_session_id_context for each
11331 connection using the SSL_CTX).
11334 *) OAEP decoding bug fix.
11337 *) Support INSTALL_PREFIX for package builders, as proposed by
11341 *) New Configure options "threads" and "no-threads". For systems
11342 where the proper compiler options are known (currently Solaris
11343 and Linux), "threads" is the default.
11346 *) New script util/mklink.pl as a faster substitute for util/mklink.sh.
11349 *) Install various scripts to $(OPENSSLDIR)/misc, not to
11350 $(INSTALLTOP)/bin -- they shouldn't clutter directories
11351 such as /usr/local/bin.
11354 *) "make linux-shared" to build shared libraries.
11355 [Niels Poppe <niels@netbox.org>]
11357 *) New Configure option no-<cipher> (rsa, idea, rc5, ...).
11360 *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
11361 extension adding in x509 utility.
11364 *) Remove NOPROTO sections and error code comments.
11367 *) Partial rewrite of the DEF file generator to now parse the ANSI
11371 *) New Configure options --prefix=DIR and --openssldir=DIR.
11374 *) Complete rewrite of the error code script(s). It is all now handled
11375 by one script at the top level which handles error code gathering,
11376 header rewriting and C source file generation. It should be much better
11377 than the old method: it now uses a modified version of Ulf's parser to
11378 read the ANSI prototypes in all header files (thus the old K&R definitions
11379 aren't needed for error creation any more) and do a better job of
11380 translating function codes into names. The old 'ASN1 error code imbedded
11381 in a comment' is no longer necessary and it doesn't use .err files which
11382 have now been deleted. Also the error code call doesn't have to appear all
11383 on one line (which resulted in some large lines...).
11386 *) Change #include filenames from <foo.h> to <openssl/foo.h>.
11389 *) Change behaviour of ssl2_read when facing length-0 packets: Don't return
11390 0 (which usually indicates a closed connection), but continue reading.
11393 *) Fix some race conditions.
11396 *) Add support for CRL distribution points extension. Add Certificate
11397 Policies and CRL distribution points documentation.
11400 *) Move the autogenerated header file parts to crypto/opensslconf.h.
11403 *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
11404 8 of keying material. Merlin has also confirmed interop with this fix
11405 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
11406 [Merlin Hughes <merlin@baltimore.ie>]
11408 *) Fix lots of warnings.
11409 [Richard Levitte <levitte@stacken.kth.se>]
11411 *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
11412 the directory spec didn't end with a LIST_SEPARATOR_CHAR.
11413 [Richard Levitte <levitte@stacken.kth.se>]
11415 *) Fix problems with sizeof(long) == 8.
11416 [Andy Polyakov <appro@fy.chalmers.se>]
11418 *) Change functions to ANSI C.
11421 *) Fix typos in error codes.
11422 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller]
11424 *) Remove defunct assembler files from Configure.
11427 *) SPARC v8 assembler BIGNUM implementation.
11428 [Andy Polyakov <appro@fy.chalmers.se>]
11430 *) Support for Certificate Policies extension: both print and set.
11431 Various additions to support the r2i method this uses.
11434 *) A lot of constification, and fix a bug in X509_NAME_oneline() that could
11435 return a const string when you are expecting an allocated buffer.
11438 *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
11439 types DirectoryString and DisplayText.
11442 *) Add code to allow r2i extensions to access the configuration database,
11443 add an LHASH database driver and add several ctx helper functions.
11446 *) Fix an evil bug in bn_expand2() which caused various BN functions to
11447 fail when they extended the size of a BIGNUM.
11450 *) Various utility functions to handle SXNet extension. Modify mkdef.pl to
11451 support typesafe stack.
11454 *) Fix typo in SSL_[gs]et_options().
11455 [Nils Frostberg <nils@medcom.se>]
11457 *) Delete various functions and files that belonged to the (now obsolete)
11458 old X509V3 handling code.
11461 *) New Configure option "rsaref".
11464 *) Don't auto-generate pem.h.
11467 *) Introduce type-safe ASN.1 SETs.
11470 *) Convert various additional casted stacks to type-safe STACK_OF() variants.
11471 [Ben Laurie, Ralf S. Engelschall, Steve Henson]
11473 *) Introduce type-safe STACKs. This will almost certainly break lots of code
11474 that links with OpenSSL (well at least cause lots of warnings), but fear
11475 not: the conversion is trivial, and it eliminates loads of evil casts. A
11476 few STACKed things have been converted already. Feel free to convert more.
11477 In the fullness of time, I'll do away with the STACK type altogether.
11480 *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate
11481 specified in <certfile> by updating the entry in the index.txt file.
11482 This way one no longer has to edit the index.txt file manually for
11483 revoking a certificate. The -revoke option does the gory details now.
11484 [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall]
11486 *) Fix `openssl crl -noout -text' combination where `-noout' killed the
11487 `-text' option at all and this way the `-noout -text' combination was
11488 inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'.
11489 [Ralf S. Engelschall]
11491 *) Make sure a corresponding plain text error message exists for the
11492 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
11493 verify callback function determined that a certificate was revoked.
11494 [Ralf S. Engelschall]
11496 *) Bugfix: In test/testenc, don't test "openssl <cipher>" for
11497 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test
11498 all available cipers including rc5, which was forgotten until now.
11499 In order to let the testing shell script know which algorithms
11500 are available, a new (up to now undocumented) command
11501 "openssl list-cipher-commands" is used.
11504 *) Bugfix: s_client occasionally would sleep in select() when
11505 it should have checked SSL_pending() first.
11508 *) New functions DSA_do_sign and DSA_do_verify to provide access to
11509 the raw DSA values prior to ASN.1 encoding.
11512 *) Tweaks to Configure
11513 [Niels Poppe <niels@netbox.org>]
11515 *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
11519 *) New variables $(RANLIB) and $(PERL) in the Makefiles.
11522 *) New config option to avoid instructions that are illegal on the 80386.
11523 The default code is faster, but requires at least a 486.
11526 *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
11527 SSL2_SERVER_VERSION (not used at all) macros, which are now the
11528 same as SSL2_VERSION anyway.
11531 *) New "-showcerts" option for s_client.
11534 *) Still more PKCS#12 integration. Add pkcs12 application to openssl
11535 application. Various cleanups and fixes.
11538 *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
11539 modify error routines to work internally. Add error codes and PBE init
11540 to library startup routines.
11543 *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and
11544 packing functions to asn1 and evp. Changed function names and error
11545 codes along the way.
11548 *) PKCS12 integration: and so it begins... First of several patches to
11549 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
11550 objects to objects.h
11553 *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1
11554 and display support for Thawte strong extranet extension.
11557 *) Add LinuxPPC support.
11558 [Jeff Dubrule <igor@pobox.org>]
11560 *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
11561 bn_div_words in alpha.s.
11562 [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie]
11564 *) Make sure the RSA OAEP test is skipped under -DRSAref because
11565 OAEP isn't supported when OpenSSL is built with RSAref.
11566 [Ulf Moeller <ulf@fitug.de>]
11568 *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
11569 so they no longer are missing under -DNOPROTO.
11570 [Soren S. Jorvang <soren@t.dk>]
11573 Changes between 0.9.1c and 0.9.2b [22 Mar 1999]
11575 *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
11576 doesn't work when the session is reused. Coming soon!
11579 *) Fix a security hole, that allows sessions to be reused in the wrong
11580 context thus bypassing client cert protection! All software that uses
11581 client certs and session caches in multiple contexts NEEDS PATCHING to
11582 allow session reuse! A fuller solution is in the works.
11583 [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)]
11585 *) Some more source tree cleanups (removed obsolete files
11586 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
11587 permission on "config" script to be executable) and a fix for the INSTALL
11589 [Ulf Moeller <ulf@fitug.de>]
11591 *) Remove some legacy and erroneous uses of malloc, free instead of
11593 [Lennart Bang <lob@netstream.se>, with minor changes by Steve]
11595 *) Make rsa_oaep_test return non-zero on error.
11596 [Ulf Moeller <ulf@fitug.de>]
11598 *) Add support for native Solaris shared libraries. Configure
11599 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
11600 if someone would make that last step automatic.
11601 [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>]
11603 *) ctx_size was not built with the right compiler during "make links". Fixed.
11606 *) Change the meaning of 'ALL' in the cipher list. It now means "everything
11607 except NULL ciphers". This means the default cipher list will no longer
11608 enable NULL ciphers. They need to be specifically enabled e.g. with
11609 the string "DEFAULT:eNULL".
11612 *) Fix to RSA private encryption routines: if p < q then it would
11613 occasionally produce an invalid result. This will only happen with
11614 externally generated keys because OpenSSL (and SSLeay) ensure p > q.
11617 *) Be less restrictive and allow also `perl util/perlpath.pl
11618 /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin',
11619 because this way one can also use an interpreter named `perl5' (which is
11620 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
11621 installed as `perl').
11622 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
11624 *) Let util/clean-depend.pl work also with older Perl 5.00x versions.
11625 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
11627 *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
11628 advapi32.lib to Win32 build and change the pem test comparison
11629 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
11630 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
11631 and crypto/des/ede_cbcm_enc.c.
11634 *) DES quad checksum was broken on big-endian architectures. Fixed.
11637 *) Comment out two functions in bio.h that aren't implemented. Fix up the
11638 Win32 test batch file so it (might) work again. The Win32 test batch file
11639 is horrible: I feel ill....
11642 *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
11643 in e_os.h. Audit of header files to check ANSI and non ANSI
11644 sections: 10 functions were absent from non ANSI section and not exported
11645 from Windows DLLs. Fixed up libeay.num for new functions.
11648 *) Make `openssl version' output lines consistent.
11649 [Ralf S. Engelschall]
11651 *) Fix Win32 symbol export lists for BIO functions: Added
11652 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
11653 to ms/libeay{16,32}.def.
11654 [Ralf S. Engelschall]
11656 *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
11657 fine under Unix and passes some trivial tests I've now added. But the
11658 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
11659 added to make sure no one expects that this stuff really works in the
11660 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources
11661 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
11663 [Ralf S. Engelschall]
11665 *) Fix the generation of two part addresses in perl.
11666 [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie]
11668 *) Add config entry for Linux on MIPS.
11669 [John Tobey <jtobey@channel1.com>]
11671 *) Make links whenever Configure is run, unless we are on Windoze.
11674 *) Permit extensions to be added to CRLs using crl_section in openssl.cnf.
11675 Currently only issuerAltName and AuthorityKeyIdentifier make any sense
11679 *) Add a useful kludge to allow package maintainers to specify compiler and
11680 other platforms details on the command line without having to patch the
11681 Configure script everytime: One now can use ``perl Configure
11682 <id>:<details>'', i.e. platform ids are allowed to have details appended
11683 to them (separated by colons). This is treated as there would be a static
11684 pre-configured entry in Configure's %table under key <id> with value
11685 <details> and ``perl Configure <id>'' is called. So, when you want to
11686 perform a quick test-compile under FreeBSD 3.1 with pgcc and without
11687 assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"''
11688 now, which overrides the FreeBSD-elf entry on-the-fly.
11689 [Ralf S. Engelschall]
11691 *) Disable new TLS1 ciphersuites by default: they aren't official yet.
11694 *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
11695 on the `perl Configure ...' command line. This way one can compile
11696 OpenSSL libraries with Position Independent Code (PIC) which is needed
11697 for linking it into DSOs.
11698 [Ralf S. Engelschall]
11700 *) Remarkably, export ciphers were totally broken and no-one had noticed!
11704 *) Cleaned up the LICENSE document: The official contact for any license
11705 questions now is the OpenSSL core team under openssl-core@openssl.org.
11706 And add a paragraph about the dual-license situation to make sure people
11707 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
11708 to the OpenSSL toolkit.
11709 [Ralf S. Engelschall]
11711 *) General source tree makefile cleanups: Made `making xxx in yyy...'
11712 display consistent in the source tree and replaced `/bin/rm' by `rm'.
11713 Additionally cleaned up the `make links' target: Remove unnecessary
11714 semicolons, subsequent redundant removes, inline point.sh into mklink.sh
11715 to speed processing and no longer clutter the display with confusing
11716 stuff. Instead only the actually done links are displayed.
11717 [Ralf S. Engelschall]
11719 *) Permit null encryption ciphersuites, used for authentication only. It used
11720 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
11721 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
11725 *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
11726 signed attributes when verifying signatures (this would break them),
11727 the detached data encoding was wrong and public keys obtained using
11728 X509_get_pubkey() weren't freed.
11731 *) Add text documentation for the BUFFER functions. Also added a work around
11732 to a Win95 console bug. This was triggered by the password read stuff: the
11733 last character typed gets carried over to the next fread(). If you were
11734 generating a new cert request using 'req' for example then the last
11735 character of the passphrase would be CR which would then enter the first
11739 *) Added the new `Includes OpenSSL Cryptography Software' button as
11740 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
11741 button and can be used by applications based on OpenSSL to show the
11742 relationship to the OpenSSL project.
11743 [Ralf S. Engelschall]
11745 *) Remove confusing variables in function signatures in files
11746 ssl/ssl_lib.c and ssl/ssl.h.
11747 [Lennart Bong <lob@kulthea.stacken.kth.se>]
11749 *) Don't install bss_file.c under PREFIX/include/
11750 [Lennart Bong <lob@kulthea.stacken.kth.se>]
11752 *) Get the Win32 compile working again. Modify mkdef.pl so it can handle
11753 functions that return function pointers and has support for NT specific
11754 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
11755 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
11756 unsigned to signed types: this was killing the Win32 compile.
11759 *) Add new certificate file to stack functions,
11760 SSL_add_dir_cert_subjects_to_stack() and
11761 SSL_add_file_cert_subjects_to_stack(). These largely supplant
11762 SSL_load_client_CA_file(), and can be used to add multiple certs easily
11763 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
11764 This means that Apache-SSL and similar packages don't have to mess around
11765 to add as many CAs as they want to the preferred list.
11768 *) Experiment with doxygen documentation. Currently only partially applied to
11770 See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with
11771 openssl.doxy as the configuration file.
11774 *) Get rid of remaining C++-style comments which strict C compilers hate.
11775 [Ralf S. Engelschall, pointed out by Carlos Amengual]
11777 *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
11778 compiled in by default: it has problems with large keys.
11781 *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
11782 DH private keys and/or callback functions which directly correspond to
11783 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
11784 is needed for applications which have to configure certificates on a
11785 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
11787 For the RSA certificate situation is makes no difference, but
11788 for the DSA certificate situation this fixes the "no shared cipher"
11789 problem where the OpenSSL cipher selection procedure failed because the
11790 temporary keys were not overtaken from the context and the API provided
11791 no way to reconfigure them.
11792 The new functions now let applications reconfigure the stuff and they
11793 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
11794 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new
11795 non-public-API function ssl_cert_instantiate() is used as a helper
11796 function and also to reduce code redundancy inside ssl_rsa.c.
11797 [Ralf S. Engelschall]
11799 *) Move s_server -dcert and -dkey options out of the undocumented feature
11800 area because they are useful for the DSA situation and should be
11801 recognized by the users.
11802 [Ralf S. Engelschall]
11804 *) Fix the cipher decision scheme for export ciphers: the export bits are
11805 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
11806 SSL_EXP_MASK. So, the original variable has to be used instead of the
11807 already masked variable.
11808 [Richard Levitte <levitte@stacken.kth.se>]
11810 *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c
11811 [Richard Levitte <levitte@stacken.kth.se>]
11813 *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
11814 from `int' to `unsigned int' because it's a length and initialized by
11815 EVP_DigestFinal() which expects an `unsigned int *'.
11816 [Richard Levitte <levitte@stacken.kth.se>]
11818 *) Don't hard-code path to Perl interpreter on shebang line of Configure
11819 script. Instead use the usual Shell->Perl transition trick.
11820 [Ralf S. Engelschall]
11822 *) Make `openssl x509 -noout -modulus' functional also for DSA certificates
11823 (in addition to RSA certificates) to match the behaviour of `openssl dsa
11824 -noout -modulus' as it's already the case for `openssl rsa -noout
11825 -modulus'. For RSA the -modulus is the real "modulus" while for DSA
11826 currently the public key is printed (a decision which was already done by
11827 `openssl dsa -modulus' in the past) which serves a similar purpose.
11828 Additionally the NO_RSA no longer completely removes the whole -modulus
11829 option; it now only avoids using the RSA stuff. Same applies to NO_DSA
11831 [Ralf S. Engelschall]
11833 *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
11834 BIO. See the source (crypto/evp/bio_ok.c) for more info.
11835 [Arne Ansper <arne@ats.cyber.ee>]
11837 *) Dump the old yucky req code that tried (and failed) to allow raw OIDs
11838 to be added. Now both 'req' and 'ca' can use new objects defined in the
11842 *) Add cool BIO that does syslog (or event log on NT).
11843 [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie]
11845 *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
11846 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
11847 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
11848 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
11851 *) Add preliminary config info for new extension code.
11854 *) Make RSA_NO_PADDING really use no padding.
11855 [Ulf Moeller <ulf@fitug.de>]
11857 *) Generate errors when private/public key check is done.
11860 *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
11861 for some CRL extensions and new objects added.
11864 *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private
11865 key usage extension and fuller support for authority key id.
11868 *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
11869 padding method for RSA, which is recommended for new applications in PKCS
11870 #1 v2.0 (RFC 2437, October 1998).
11871 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
11872 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
11873 against Bleichbacher's attack on RSA.
11874 [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
11877 *) Updates to the new SSL compression code
11878 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
11880 *) Fix so that the version number in the master secret, when passed
11881 via RSA, checks that if TLS was proposed, but we roll back to SSLv3
11882 (because the server will not accept higher), that the version number
11883 is 0x03,0x01, not 0x03,0x00
11884 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
11886 *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
11887 leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
11888 in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
11891 *) Support for RAW extensions where an arbitrary extension can be
11892 created by including its DER encoding. See apps/openssl.cnf for
11896 *) Make sure latest Perl versions don't interpret some generated C array
11897 code as Perl array code in the crypto/err/err_genc.pl script.
11898 [Lars Weber <3weber@informatik.uni-hamburg.de>]
11900 *) Modify ms/do_ms.bat to not generate assembly language makefiles since
11901 not many people have the assembler. Various Win32 compilation fixes and
11902 update to the INSTALL.W32 file with (hopefully) more accurate Win32
11903 build instructions.
11906 *) Modify configure script 'Configure' to automatically create crypto/date.h
11907 file under Win32 and also build pem.h from pem.org. New script
11908 util/mkfiles.pl to create the MINFO file on environments that can't do a
11909 'make files': perl util/mkfiles.pl >MINFO should work.
11912 *) Major rework of DES function declarations, in the pursuit of correctness
11913 and purity. As a result, many evil casts evaporated, and some weirdness,
11914 too. You may find this causes warnings in your code. Zapping your evil
11915 casts will probably fix them. Mostly.
11918 *) Fix for a typo in asn1.h. Bug fix to object creation script
11919 obj_dat.pl. It considered a zero in an object definition to mean
11920 "end of object": none of the objects in objects.h have any zeros
11921 so it wasn't spotted.
11922 [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>]
11924 *) Add support for Triple DES Cipher Block Chaining with Output Feedback
11925 Masking (CBCM). In the absence of test vectors, the best I have been able
11926 to do is check that the decrypt undoes the encrypt, so far. Send me test
11927 vectors if you have them.
11930 *) Correct calculation of key length for export ciphers (too much space was
11931 allocated for null ciphers). This has not been tested!
11934 *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage
11935 message is now correct (it understands "crypto" and "ssl" on its
11936 command line). There is also now an "update" option. This will update
11937 the util/ssleay.num and util/libeay.num files with any new functions.
11939 perl util/mkdef.pl crypto ssl update
11940 it will update them.
11943 *) Overhauled the Perl interface (perl/*):
11944 - ported BN stuff to OpenSSL's different BN library
11945 - made the perl/ source tree CVS-aware
11946 - renamed the package from SSLeay to OpenSSL (the files still contain
11947 their history because I've copied them in the repository)
11948 - removed obsolete files (the test scripts will be replaced
11949 by better Test::Harness variants in the future)
11950 [Ralf S. Engelschall]
11952 *) First cut for a very conservative source tree cleanup:
11953 1. merge various obsolete readme texts into doc/ssleay.txt
11954 where we collect the old documents and readme texts.
11955 2. remove the first part of files where I'm already sure that we no
11956 longer need them because of three reasons: either they are just temporary
11957 files which were left by Eric or they are preserved original files where
11958 I've verified that the diff is also available in the CVS via "cvs diff
11959 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
11960 the crypto/md/ stuff).
11961 [Ralf S. Engelschall]
11963 *) More extension code. Incomplete support for subject and issuer alt
11964 name, issuer and authority key id. Change the i2v function parameters
11965 and add an extra 'crl' parameter in the X509V3_CTX structure: guess
11966 what that's for :-) Fix to ASN1 macro which messed up
11967 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
11970 *) Preliminary support for ENUMERATED type. This is largely copied from the
11974 *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
11975 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
11977 *) Make sure `make rehash' target really finds the `openssl' program.
11978 [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
11980 *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
11981 like to hear about it if this slows down other processors.
11984 *) Add CygWin32 platform information to Configure script.
11985 [Alan Batie <batie@aahz.jf.intel.com>]
11987 *) Fixed ms/32all.bat script: `no_asm' -> `no-asm'
11988 [Rainer W. Gerling <gerling@mpg-gv.mpg.de>]
11990 *) New program nseq to manipulate netscape certificate sequences
11993 *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
11997 *) Fixes to BN code. Previously the default was to define BN_RECURSION
11998 but the BN code had some problems that would cause failures when
11999 doing certificate verification and some other functions.
12000 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
12002 *) Add ASN1 and PEM code to support netscape certificate sequences.
12005 *) Add ASN1 and PEM code to support netscape certificate sequences.
12008 *) Add several PKIX and private extended key usage OIDs.
12011 *) Modify the 'ca' program to handle the new extension code. Modify
12012 openssl.cnf for new extension format, add comments.
12015 *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
12016 and add a sample to openssl.cnf so req -x509 now adds appropriate
12020 *) Continued X509 V3 changes. Add to other makefiles, integrate with the
12021 error code, add initial support to X509_print() and x509 application.
12024 *) Takes a deep breath and start adding X509 V3 extension support code. Add
12025 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
12026 stuff is currently isolated and isn't even compiled yet.
12029 *) Continuing patches for GeneralizedTime. Fix up certificate and CRL
12030 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
12031 Removed the versions check from X509 routines when loading extensions:
12032 this allows certain broken certificates that don't set the version
12033 properly to be processed.
12036 *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
12037 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
12038 can still be regenerated with "make depend".
12041 *) Spelling mistake in C version of CAST-128.
12042 [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>]
12044 *) Changes to the error generation code. The perl script err-code.pl
12045 now reads in the old error codes and retains the old numbers, only
12046 adding new ones if necessary. It also only changes the .err files if new
12047 codes are added. The makefiles have been modified to only insert errors
12048 when needed (to avoid needlessly modifying header files). This is done
12049 by only inserting errors if the .err file is newer than the auto generated
12050 C file. To rebuild all the error codes from scratch (the old behaviour)
12051 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
12052 or delete all the .err files.
12055 *) CAST-128 was incorrectly implemented for short keys. The C version has
12056 been fixed, but is untested. The assembler versions are also fixed, but
12057 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
12058 to regenerate it if needed.
12059 [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
12060 Hagino <itojun@kame.net>]
12062 *) File was opened incorrectly in randfile.c.
12063 [Ulf Möller <ulf@fitug.de>]
12065 *) Beginning of support for GeneralizedTime. d2i, i2d, check and print
12066 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
12067 GeneralizedTime. ASN1_TIME is the proper type used in certificates et
12068 al: it's just almost always a UTCTime. Note this patch adds new error
12069 codes so do a "make errors" if there are problems.
12072 *) Correct Linux 1 recognition in config.
12073 [Ulf Möller <ulf@fitug.de>]
12075 *) Remove pointless MD5 hash when using DSA keys in ca.
12076 [Anonymous <nobody@replay.com>]
12078 *) Generate an error if given an empty string as a cert directory. Also
12079 generate an error if handed NULL (previously returned 0 to indicate an
12080 error, but didn't set one).
12081 [Ben Laurie, reported by Anonymous <nobody@replay.com>]
12083 *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
12086 *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
12087 parameters. This was causing a warning which killed off the Win32 compile.
12090 *) Remove C++ style comments from crypto/bn/bn_local.h.
12091 [Neil Costigan <neil.costigan@celocom.com>]
12093 *) The function OBJ_txt2nid was broken. It was supposed to return a nid
12094 based on a text string, looking up short and long names and finally
12095 "dot" format. The "dot" format stuff didn't work. Added new function
12096 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
12097 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
12098 OID is not part of the table.
12101 *) Add prototypes to X509 lookup/verify methods, fixing a bug in
12102 X509_LOOKUP_by_alias().
12105 *) Sort openssl functions by name.
12108 *) Get the gendsa program working (hopefully) and add it to app list. Remove
12109 encryption from sample DSA keys (in case anyone is interested the password
12113 *) Make _all_ *_free functions accept a NULL pointer.
12114 [Frans Heymans <fheymans@isaserver.be>]
12116 *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use
12118 [Anonymous <nobody@replay.com>]
12120 *) s_server should send the CAfile as acceptable CAs, not its own cert.
12121 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
12123 *) Don't blow it for numeric -newkey arguments to apps/req.
12124 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
12126 *) Temp key "for export" tests were wrong in s3_srvr.c.
12127 [Anonymous <nobody@replay.com>]
12129 *) Add prototype for temp key callback functions
12130 SSL_CTX_set_tmp_{rsa,dh}_callback().
12133 *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
12134 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
12137 *) X509_name_add_entry() freed the wrong thing after an error.
12138 [Arne Ansper <arne@ats.cyber.ee>]
12140 *) rsa_eay.c would attempt to free a NULL context.
12141 [Arne Ansper <arne@ats.cyber.ee>]
12143 *) BIO_s_socket() had a broken should_retry() on Windoze.
12144 [Arne Ansper <arne@ats.cyber.ee>]
12146 *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
12147 [Arne Ansper <arne@ats.cyber.ee>]
12149 *) Make sure the already existing X509_STORE->depth variable is initialized
12150 in X509_STORE_new(), but document the fact that this variable is still
12151 unused in the certificate verification process.
12152 [Ralf S. Engelschall]
12154 *) Fix the various library and apps files to free up pkeys obtained from
12155 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
12158 *) Fix reference counting in X509_PUBKEY_get(). This makes
12159 demos/maurice/example2.c work, amongst others, probably.
12160 [Steve Henson and Ben Laurie]
12162 *) First cut of a cleanup for apps/. First the `ssleay' program is now named
12163 `openssl' and second, the shortcut symlinks for the `openssl <command>'
12164 are no longer created. This way we have a single and consistent command
12165 line interface `openssl <command>', similar to `cvs <command>'.
12166 [Ralf S. Engelschall, Paul Sutton and Ben Laurie]
12168 *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
12169 BIT STRING wrapper always have zero unused bits.
12172 *) Add CA.pl, perl version of CA.sh, add extended key usage OID.
12175 *) Make the top-level INSTALL documentation easier to understand.
12178 *) Makefiles updated to exit if an error occurs in a sub-directory
12179 make (including if user presses ^C) [Paul Sutton]
12181 *) Make Montgomery context stuff explicit in RSA data structure.
12184 *) Fix build order of pem and err to allow for generated pem.h.
12187 *) Fix renumbering bug in X509_NAME_delete_entry().
12190 *) Enhanced the err-ins.pl script so it makes the error library number
12191 global and can add a library name. This is needed for external ASN1 and
12192 other error libraries.
12195 *) Fixed sk_insert which never worked properly.
12198 *) Fix ASN1 macros so they can handle indefinite length constructed
12199 EXPLICIT tags. Some non standard certificates use these: they can now
12203 *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
12204 into a single doc/ssleay.txt bundle. This way the information is still
12205 preserved but no longer messes up this directory. Now it's new room for
12206 the new set of documentation files.
12207 [Ralf S. Engelschall]
12209 *) SETs were incorrectly DER encoded. This was a major pain, because they
12210 shared code with SEQUENCEs, which aren't coded the same. This means that
12211 almost everything to do with SETs or SEQUENCEs has either changed name or
12212 number of arguments.
12213 [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>]
12215 *) Fix test data to work with the above.
12218 *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
12219 was already fixed by Eric for 0.9.1 it seems.
12220 [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>]
12222 *) Autodetect FreeBSD3.
12225 *) Fix various bugs in Configure. This affects the following platforms:
12229 unixware-2.0-pentium
12233 *) Eliminate generated files from CVS. Reorder tests to regenerate files
12234 before they are needed.
12237 *) Generate Makefile.ssl from Makefile.org (to keep CVS happy).
12241 Changes between 0.9.1b and 0.9.1c [23-Dec-1998]
12243 *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
12244 changed SSLeay to OpenSSL in version strings.
12245 [Ralf S. Engelschall]
12247 *) Some fixups to the top-level documents.
12250 *) Fixed the nasty bug where rsaref.h was not found under compile-time
12251 because the symlink to include/ was missing.
12252 [Ralf S. Engelschall]
12254 *) Incorporated the popular no-RSA/DSA-only patches
12255 which allow to compile a RSA-free SSLeay.
12256 [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall]
12258 *) Fixed nasty rehash problem under `make -f Makefile.ssl links'
12259 when "ssleay" is still not found.
12260 [Ralf S. Engelschall]
12262 *) Added more platforms to Configure: Cray T3E, HPUX 11,
12263 [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>]
12265 *) Updated the README file.
12266 [Ralf S. Engelschall]
12268 *) Added various .cvsignore files in the CVS repository subdirs
12269 to make a "cvs update" really silent.
12270 [Ralf S. Engelschall]
12272 *) Recompiled the error-definition header files and added
12273 missing symbols to the Win32 linker tables.
12274 [Ralf S. Engelschall]
12276 *) Cleaned up the top-level documents;
12277 o new files: CHANGES and LICENSE
12278 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
12279 o merged COPYRIGHT into LICENSE
12280 o removed obsolete TODO file
12281 o renamed MICROSOFT to INSTALL.W32
12282 [Ralf S. Engelschall]
12284 *) Removed dummy files from the 0.9.1b source tree:
12285 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
12286 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
12287 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
12288 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
12289 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
12290 [Ralf S. Engelschall]
12292 *) Added various platform portability fixes.
12295 *) The Genesis of the OpenSSL rpject:
12296 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
12297 Young and Tim J. Hudson created while they were working for C2Net until
12299 [The OpenSSL Project]
12302 Changes between 0.9.0b and 0.9.1b [not released]
12304 *) Updated a few CA certificates under certs/
12307 *) Changed some BIGNUM api stuff.
12310 *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
12311 DGUX x86, Linux Alpha, etc.
12314 *) New COMP library [crypto/comp/] for SSL Record Layer Compression:
12315 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
12319 *) Add -strparse option to asn1pars program which parses nested
12321 [Dr Stephen Henson <shenson@bigfoot.com>]
12323 *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
12326 *) DSA fix for "ca" program.
12329 *) Added "-genkey" option to "dsaparam" program.
12332 *) Added RIPE MD160 (rmd160) message digest.
12335 *) Added -a (all) option to "ssleay version" command.
12338 *) Added PLATFORM define which is the id given to Configure.
12341 *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
12344 *) Extended the ASN.1 parser routines.
12347 *) Extended BIO routines to support REUSEADDR, seek, tell, etc.
12350 *) Added a BN_CTX to the BN library.
12353 *) Fixed the weak key values in DES library
12356 *) Changed API in EVP library for cipher aliases.
12359 *) Added support for RC2/64bit cipher.
12362 *) Converted the lhash library to the crypto/mem.c functions.
12365 *) Added more recognized ASN.1 object ids.
12368 *) Added more RSA padding checks for SSL/TLS.
12371 *) Added BIO proxy/filter functionality.
12374 *) Added extra_certs to SSL_CTX which can be used
12375 send extra CA certificates to the client in the CA cert chain sending
12376 process. It can be configured with SSL_CTX_add_extra_chain_cert().
12379 *) Now Fortezza is denied in the authentication phase because
12380 this is key exchange mechanism is not supported by SSLeay at all.
12383 *) Additional PKCS1 checks.
12386 *) Support the string "TLSv1" for all TLS v1 ciphers.
12389 *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
12390 ex_data index of the SSL context in the X509_STORE_CTX ex_data.
12393 *) Fixed a few memory leaks.
12396 *) Fixed various code and comment typos.
12399 *) A minor bug in ssl/s3_clnt.c where there would always be 4 0
12400 bytes sent in the client random.
12401 [Edward Bishop <ebishop@spyglass.com>]
projects / openssl.git / blob