5 Changes between 1.0.2g and 1.1.0 [xx XXX xxxx]
7 *) With Windows Visual Studio builds, the .pdb files are installed
8 alongside the installed libraries and executables. For a static
9 library installation, ossl_static.pdb is the associate compiler
10 generated .pdb file to be used when linking programs.
13 *) Remove openssl.spec. Packaging files belong with the packagers.
16 *) Automatic Darwin/OSX configuration has had a refresh, it will now
17 recognise x86_64 architectures automatically. You can still decide
18 to build for a different bitness with the environment variable
19 KERNEL_BITS (can be 32 or 64), for example:
21 KERNEL_BITS=32 ./config
25 *) Change default algorithms in pkcs8 utility to use PKCS#5 v2.0,
26 256 bit AES and HMAC with SHA256.
29 *) Remove support for MIPS o32 ABI on IRIX (and IRIX only).
32 *) Triple-DES ciphers have been moved from HIGH to MEDIUM.
35 *) To enable users to have their own config files and build file templates,
36 Configure looks in the directory indicated by the environment variable
37 OPENSSL_LOCAL_CONFIG_DIR as well as the in-source Configurations/
38 directory. On VMS, OPENSSL_LOCAL_CONFIG_DIR is expected to be a logical
39 name and is used as is.
42 *) The following datatypes were made opaque: X509_OBJECT, X509_STORE_CTX,
43 X509_STORE, X509_LOOKUP, and X509_LOOKUP_METHOD. The unused type
44 X509_CERT_FILE_CTX was removed.
47 *) "shared" builds are now the default. To create only static libraries use
48 the "no-shared" Configure option.
51 *) Remove the no-aes, no-hmac, no-rsa, no-sha and no-md5 Configure options.
52 All of these option have not worked for some while and are fundamental
56 *) Make various cleanup routines no-ops and mark them as deprecated. Most
57 global cleanup functions are no longer required because they are handled
58 via auto-deinit (see OPENSSL_init_crypto and OPENSSL_init_ssl man pages).
59 Explicitly de-initing can cause problems (e.g. where a library that uses
60 OpenSSL de-inits, but an application is still using it). The affected
61 functions are CONF_modules_free(), ENGINE_cleanup(), OBJ_cleanup(),
62 EVP_cleanup(), BIO_sock_cleanup(), CRYPTO_cleanup_all_ex_data(),
63 RAND_cleanup(), SSL_COMP_free_compression_methods(), ERR_free_strings() and
67 *) --strict-warnings no longer enables runtime debugging options
68 such as REF_DEBUG. Instead, debug options are automatically
69 enabled with '--debug' builds.
70 [Andy Polyakov, Emilia Käsper]
72 *) Made DH and DH_METHOD opaque. The structures for managing DH objects
73 have been moved out of the public header files. New functions for managing
74 these have been added.
77 *) Made RSA and RSA_METHOD opaque. The structures for managing RSA
78 objects have been moved out of the public header files. New
79 functions for managing these have been added.
82 *) Made DSA and DSA_METHOD opaque. The structures for managing DSA objects
83 have been moved out of the public header files. New functions for managing
84 these have been added.
87 *) Made BIO and BIO_METHOD opaque. The structures for managing BIOs have been
88 moved out of the public header files. New functions for managing these
92 *) Removed no-rijndael as a config option. Rijndael is an old name for AES.
95 *) Removed the mk1mf build scripts.
98 *) Headers are now wrapped, if necessary, with OPENSSL_NO_xxx, so
99 it is always safe to #include a header now.
102 *) Removed the aged BC-32 config and all its supporting scripts
105 *) Removed support for Ultrix, Netware, and OS/2.
108 *) Add support for HKDF.
111 *) Add support for blake2b and blake2s
114 *) Added support for "pipelining". Ciphers that have the
115 EVP_CIPH_FLAG_PIPELINE flag set have a capability to process multiple
116 encryptions/decryptions simultaneously. There are currently no built-in
117 ciphers with this property but the expectation is that engines will be able
118 to offer it to significantly improve throughput. Support has been extended
119 into libssl so that multiple records for a single connection can be
120 processed in one go (for >=TLS 1.1).
123 *) Added the AFALG engine. This is an async capable engine which is able to
124 offload work to the Linux kernel. In this initial version it only supports
125 AES128-CBC. The kernel must be version 4.1.0 or greater.
128 *) OpenSSL now uses a new threading API. It is no longer necessary to
129 set locking callbacks to use OpenSSL in a multi-threaded environment. There
130 are two supported threading models: pthreads and windows threads. It is
131 also possible to configure OpenSSL at compile time for "no-threads". The
132 old threading API should no longer be used. The functions have been
133 replaced with "no-op" compatibility macros.
134 [Alessandro Ghedini, Matt Caswell]
136 *) Modify behavior of ALPN to invoke callback after SNI/servername
137 callback, such that updates to the SSL_CTX affect ALPN.
140 *) Add SSL_CIPHER queries for authentication and key-exchange.
143 *) Changes to the DEFAULT cipherlist:
144 - Prefer (EC)DHE handshakes over plain RSA.
145 - Prefer AEAD ciphers over legacy ciphers.
146 - Prefer ECDSA over RSA when both certificates are available.
147 - Prefer TLSv1.2 ciphers/PRF.
148 - Remove DSS, SEED, IDEA, CAMELLIA, and AES-CCM from the
152 *) Change the ECC default curve list to be this, in order: x25519,
153 secp256r1, secp521r1, secp384r1.
156 *) RC4 based libssl ciphersuites are now classed as "weak" ciphers and are
157 disabled by default. They can be re-enabled using the
158 enable-weak-ssl-ciphers option to Configure.
161 *) If the server has ALPN configured, but supports no protocols that the
162 client advertises, send a fatal "no_application_protocol" alert.
163 This behaviour is SHALL in RFC 7301, though it isn't universally
164 implemented by other servers.
167 *) Add X25519 support.
168 Integrate support for X25519 into EC library. This includes support
169 for public and private key encoding using the format documented in
170 draft-josefsson-pkix-newcurves-01: specifically X25519 uses the
171 OID from that draft, encodes public keys using little endian
172 format in the ECPoint structure and private keys using
173 little endian form in the privateKey field of the ECPrivateKey
174 structure. TLS support complies with draft-ietf-tls-rfc4492bis-06
177 Note: the current version supports key generation, public and
178 private key encoding and ECDH key agreement using the EC API.
179 Low level point operations such as EC_POINT_add(), EC_POINT_mul()
183 *) Deprecate SRP_VBASE_get_by_user.
184 SRP_VBASE_get_by_user had inconsistent memory management behaviour.
185 In order to fix an unavoidable memory leak (CVE-2016-0798),
186 SRP_VBASE_get_by_user was changed to ignore the "fake user" SRP
187 seed, even if the seed is configured.
189 Users should use SRP_VBASE_get1_by_user instead. Note that in
190 SRP_VBASE_get1_by_user, caller must free the returned value. Note
191 also that even though configuring the SRP seed attempts to hide
192 invalid usernames by continuing the handshake with fake
193 credentials, this behaviour is not constant time and no strong
194 guarantees are made that the handshake is indistinguishable from
195 that of a valid user.
198 *) Configuration change; it's now possible to build dynamic engines
199 without having to build shared libraries and vice versa. This
200 only applies to the engines in engines/, those in crypto/engine/
201 will always be built into libcrypto (i.e. "static").
203 Building dynamic engines is enabled by default; to disable, use
204 the configuration option "disable-dynamic-engine".
206 The only requirements for building dynamic engines are the
207 presence of the DSO module and building with position independent
208 code, so they will also automatically be disabled if configuring
209 with "disable-dso" or "disable-pic".
211 The macros OPENSSL_NO_STATIC_ENGINE and OPENSSL_NO_DYNAMIC_ENGINE
212 are also taken away from openssl/opensslconf.h, as they are
216 *) Configuration change; if there is a known flag to compile
217 position independent code, it will always be applied on the
218 libcrypto and libssl object files, and never on the application
219 object files. This means other libraries that use routines from
220 libcrypto / libssl can be made into shared libraries regardless
221 of how OpenSSL was configured.
223 If this isn't desirable, the configuration options "disable-pic"
224 or "no-pic" can be used to disable the use of PIC. This will
225 also disable building shared libraries and dynamic engines.
228 *) Removed JPAKE code. It was experimental and has no wide use.
231 *) The INSTALL_PREFIX Makefile variable has been renamed to
232 DESTDIR. That makes for less confusion on what this variable
233 is for. Also, the configuration option --install_prefix is
237 *) Heartbeat for TLS has been removed and is disabled by default
238 for DTLS; configure with enable-heartbeats. Code that uses the
239 old #define's might need to be updated.
240 [Emilia Käsper, Rich Salz]
242 *) Rename REF_CHECK to REF_DEBUG.
245 *) New "unified" build system
247 The "unified" build system is aimed to be a common system for all
248 platforms we support. With it comes new support for VMS.
250 This system builds supports building in a different directory tree
251 than the source tree. It produces one Makefile (for unix family
252 or lookalikes), or one descrip.mms (for VMS).
254 The source of information to make the Makefile / descrip.mms is
255 small files called 'build.info', holding the necessary
256 information for each directory with source to compile, and a
257 template in Configurations, like unix-Makefile.tmpl or
260 We rely heavily on the perl module Text::Template.
263 *) Added support for auto-initialisation and de-initialisation of the library.
264 OpenSSL no longer requires explicit init or deinit routines to be called,
265 except in certain circumstances. See the OPENSSL_init_crypto() and
266 OPENSSL_init_ssl() man pages for further information.
269 *) The arguments to the DTLSv1_listen function have changed. Specifically the
270 "peer" argument is now expected to be a BIO_ADDR object.
272 *) Rewrite of BIO networking library. The BIO library lacked consistent
273 support of IPv6, and adding it required some more extensive
274 modifications. This introduces the BIO_ADDR and BIO_ADDRINFO types,
275 which hold all types of addresses and chains of address information.
276 It also introduces a new API, with functions like BIO_socket,
277 BIO_connect, BIO_listen, BIO_lookup and a rewrite of BIO_accept.
278 The source/sink BIOs BIO_s_connect, BIO_s_accept and BIO_s_datagram
279 have been adapted accordingly.
282 *) RSA_padding_check_PKCS1_type_1 now accepts inputs with and without
286 *) CRIME protection: disable compression by default, even if OpenSSL is
287 compiled with zlib enabled. Applications can still enable compression
288 by calling SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION), or by
289 using the SSL_CONF library to configure compression.
292 *) The signature of the session callback configured with
293 SSL_CTX_sess_set_get_cb was changed. The read-only input buffer
294 was explicitly marked as 'const unsigned char*' instead of
298 *) Always DPURIFY. Remove the use of uninitialized memory in the
299 RNG, and other conditional uses of DPURIFY. This makes -DPURIFY a no-op.
302 *) Removed many obsolete configuration items, including
303 DES_PTR, DES_RISC1, DES_RISC2, DES_INT
304 MD2_CHAR, MD2_INT, MD2_LONG
306 IDEA_SHORT, IDEA_LONG
307 RC2_SHORT, RC2_LONG, RC4_LONG, RC4_CHUNK, RC4_INDEX
308 [Rich Salz, with advice from Andy Polyakov]
310 *) Many BN internals have been moved to an internal header file.
311 [Rich Salz with help from Andy Polyakov]
313 *) Configuration and writing out the results from it has changed.
314 Files such as Makefile include/openssl/opensslconf.h and are now
315 produced through general templates, such as Makefile.in and
316 crypto/opensslconf.h.in and some help from the perl module
319 Also, the center of configuration information is no longer
320 Makefile. Instead, Configure produces a perl module in
321 configdata.pm which holds most of the config data (in the hash
322 table %config), the target data that comes from the target
323 configuration in one of the Configurations/*.conf files (in
327 *) To clarify their intended purposes, the Configure options
328 --prefix and --openssldir change their semantics, and become more
329 straightforward and less interdependent.
331 --prefix shall be used exclusively to give the location INSTALLTOP
332 where programs, scripts, libraries, include files and manuals are
333 going to be installed. The default is now /usr/local.
335 --openssldir shall be used exclusively to give the default
336 location OPENSSLDIR where certificates, private keys, CRLs are
337 managed. This is also where the default openssl.cnf gets
339 If the directory given with this option is a relative path, the
340 values of both the --prefix value and the --openssldir value will
341 be combined to become OPENSSLDIR.
342 The default for --openssldir is INSTALLTOP/ssl.
344 Anyone who uses --openssldir to specify where OpenSSL is to be
345 installed MUST change to use --prefix instead.
348 *) The GOST engine was out of date and therefore it has been removed. An up
349 to date GOST engine is now being maintained in an external repository.
350 See: https://wiki.openssl.org/index.php/Binaries. Libssl still retains
351 support for GOST ciphersuites (these are only activated if a GOST engine
355 *) EGD is no longer supported by default; use enable-egd when
357 [Ben Kaduk and Rich Salz]
359 *) The distribution now has Makefile.in files, which are used to
360 create Makefile's when Configure is run. *Configure must be run
361 before trying to build now.*
364 *) The return value for SSL_CIPHER_description() for error conditions
368 *) Support for RFC6698/RFC7671 DANE TLSA peer authentication.
370 Obtaining and performing DNSSEC validation of TLSA records is
371 the application's responsibility. The application provides
372 the TLSA records of its choice to OpenSSL, and these are then
373 used to authenticate the peer.
375 The TLSA records need not even come from DNS. They can, for
376 example, be used to implement local end-entity certificate or
377 trust-anchor "pinning", where the "pin" data takes the form
378 of TLSA records, which can augment or replace verification
379 based on the usual WebPKI public certification authorities.
382 *) Revert default OPENSSL_NO_DEPRECATED setting. Instead OpenSSL
383 continues to support deprecated interfaces in default builds.
384 However, applications are strongly advised to compile their
385 source files with -DOPENSSL_API_COMPAT=0x10100000L, which hides
386 the declarations of all interfaces deprecated in 0.9.8, 1.0.0
387 or the 1.1.0 releases.
389 In environments in which all applications have been ported to
390 not use any deprecated interfaces OpenSSL's Configure script
391 should be used with the --api=1.1.0 option to entirely remove
392 support for the deprecated features from the library and
393 unconditionally disable them in the installed headers.
394 Essentially the same effect can be achieved with the "no-deprecated"
395 argument to Configure, except that this will always restrict
396 the build to just the latest API, rather than a fixed API
399 As applications are ported to future revisions of the API,
400 they should update their compile-time OPENSSL_API_COMPAT define
401 accordingly, but in most cases should be able to continue to
402 compile with later releases.
404 The OPENSSL_API_COMPAT versions for 1.0.0, and 0.9.8 are
405 0x10000000L and 0x00908000L, respectively. However those
406 versions did not support the OPENSSL_API_COMPAT feature, and
407 so applications are not typically tested for explicit support
408 of just the undeprecated features of either release.
411 *) Add support for setting the minimum and maximum supported protocol.
412 It can bet set via the SSL_set_min_proto_version() and
413 SSL_set_max_proto_version(), or via the SSL_CONF's MinProtocol and
414 MaxProtcol. It's recommended to use the new APIs to disable
415 protocols instead of disabling individual protocols using
416 SSL_set_options() or SSL_CONF's Protocol. This change also
417 removes support for disabling TLS 1.2 in the OpenSSL TLS
418 client at compile time by defining OPENSSL_NO_TLS1_2_CLIENT.
421 *) Support for ChaCha20 and Poly1305 added to libcrypto and libssl.
424 *) New EC_KEY_METHOD, this replaces the older ECDSA_METHOD and ECDH_METHOD
425 and integrates ECDSA and ECDH functionality into EC. Implementations can
426 now redirect key generation and no longer need to convert to or from
429 Note: the ecdsa.h and ecdh.h headers are now no longer needed and just
430 include the ec.h header file instead.
433 *) Remove support for all 40 and 56 bit ciphers. This includes all the export
434 ciphers who are no longer supported and drops support the ephemeral RSA key
435 exchange. The LOW ciphers currently doesn't have any ciphers in it.
438 *) Made EVP_MD_CTX, EVP_MD, EVP_CIPHER_CTX, EVP_CIPHER and HMAC_CTX
439 opaque. For HMAC_CTX, the following constructors and destructors
442 HMAC_CTX *HMAC_CTX_new(void);
443 void HMAC_CTX_free(HMAC_CTX *ctx);
445 For EVP_MD and EVP_CIPHER, complete APIs to create, fill and
446 destroy such methods has been added. See EVP_MD_meth_new(3) and
447 EVP_CIPHER_meth_new(3) for documentation.
450 1) EVP_MD_CTX_cleanup(), EVP_CIPHER_CTX_cleanup() and
451 HMAC_CTX_cleanup() were removed. HMAC_CTX_reset() and
452 EVP_MD_CTX_reset() should be called instead to reinitialise
453 an already created structure.
454 2) For consistency with the majority of our object creators and
455 destructors, EVP_MD_CTX_(create|destroy) were renamed to
456 EVP_MD_CTX_(new|free). The old names are retained as macros
457 for deprecated builds.
460 *) Added ASYNC support. Libcrypto now includes the async sub-library to enable
461 cryptographic operations to be performed asynchronously as long as an
462 asynchronous capable engine is used. See the ASYNC_start_job() man page for
463 further details. Libssl has also had this capability integrated with the
464 introduction of the new mode SSL_MODE_ASYNC and associated error
465 SSL_ERROR_WANT_ASYNC. See the SSL_CTX_set_mode() and SSL_get_error() man
466 pages. This work was developed in partnership with Intel Corp.
469 *) SSL_{CTX_}set_ecdh_auto() has been removed and ECDH is support is
470 always enabled now. If you want to disable the support you should
471 exclude it using the list of supported ciphers. This also means that the
472 "-no_ecdhe" option has been removed from s_server.
475 *) SSL_{CTX}_set_tmp_ecdh() which can set 1 EC curve now internally calls
476 SSL_{CTX_}set1_curves() which can set a list.
479 *) Remove support for SSL_{CTX_}set_tmp_ecdh_callback(). You should set the
480 curve you want to support using SSL_{CTX_}set1_curves().
483 *) State machine rewrite. The state machine code has been significantly
484 refactored in order to remove much duplication of code and solve issues
485 with the old code (see ssl/statem/README for further details). This change
486 does have some associated API changes. Notably the SSL_state() function
487 has been removed and replaced by SSL_get_state which now returns an
488 "OSSL_HANDSHAKE_STATE" instead of an int. SSL_set_state() has been removed
489 altogether. The previous handshake states defined in ssl.h and ssl3.h have
493 *) All instances of the string "ssleay" in the public API were replaced
494 with OpenSSL (case-matching; e.g., OPENSSL_VERSION for #define's)
495 Some error codes related to internal RSA_eay API's were renamed.
498 *) The demo files in crypto/threads were moved to demo/threads.
501 *) Removed obsolete engines: 4758cca, aep, atalla, cswift, nuron, gmp,
503 [Matt Caswell, Rich Salz]
505 *) New ASN.1 embed macro.
507 New ASN.1 macro ASN1_EMBED. This is the same as ASN1_SIMPLE except the
508 structure is not allocated: it is part of the parent. That is instead of
516 This reduces memory fragmentation and make it impossible to accidentally
517 set a mandatory field to NULL.
519 This currently only works for some fields specifically a SEQUENCE, CHOICE,
520 or ASN1_STRING type which is part of a parent SEQUENCE. Since it is
521 equivalent to ASN1_SIMPLE it cannot be tagged, OPTIONAL, SET OF or
525 *) Remove EVP_CHECK_DES_KEY, a compile-time option that never compiled.
528 *) Removed DES and RC4 ciphersuites from DEFAULT. Also removed RC2 although
529 in 1.0.2 EXPORT was already removed and the only RC2 ciphersuite is also
530 an EXPORT one. COMPLEMENTOFDEFAULT has been updated accordingly to add
531 DES and RC4 ciphersuites.
534 *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
535 This changes the decoding behaviour for some invalid messages,
536 though the change is mostly in the more lenient direction, and
537 legacy behaviour is preserved as much as possible.
540 *) Fix no-stdio build.
541 [ David Woodhouse <David.Woodhouse@intel.com> and also
542 Ivan Nestlerode <ivan.nestlerode@sonos.com> ]
544 *) New testing framework
545 The testing framework has been largely rewritten and is now using
546 perl and the perl modules Test::Harness and an extended variant of
547 Test::More called OpenSSL::Test to do its work. All test scripts in
548 test/ have been rewritten into test recipes, and all direct calls to
549 executables in test/Makefile have become individual recipes using the
550 simplified testing OpenSSL::Test::Simple.
552 For documentation on our testing modules, do:
554 perldoc test/testlib/OpenSSL/Test/Simple.pm
555 perldoc test/testlib/OpenSSL/Test.pm
559 *) Revamped memory debug; only -DCRYPTO_MDEBUG and -DCRYPTO_MDEBUG_ABORT
560 are used; the latter aborts on memory leaks (usually checked on exit).
561 Some undocumented "set malloc, etc., hooks" functions were removed
562 and others were changed. All are now documented.
565 *) In DSA_generate_parameters_ex, if the provided seed is too short,
567 [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>]
569 *) Rewrite PSK to support ECDHE_PSK, DHE_PSK and RSA_PSK. Add ciphersuites
570 from RFC4279, RFC4785, RFC5487, RFC5489.
572 Thanks to Christian J. Dietrich and Giuseppe D'Angelo for the
573 original RSA_PSK patch.
576 *) Dropped support for the SSL3_FLAGS_DELAY_CLIENT_FINISHED flag. This SSLeay
577 era flag was never set throughout the codebase (only read). Also removed
578 SSL3_FLAGS_POP_BUFFER which was only used if
579 SSL3_FLAGS_DELAY_CLIENT_FINISHED was also set.
582 *) Changed the default name options in the "ca", "crl", "req" and "x509"
583 to be "oneline" instead of "compat".
586 *) Remove SSL_OP_TLS_BLOCK_PADDING_BUG. This is SSLeay legacy, we're
587 not aware of clients that still exhibit this bug, and the workaround
588 hasn't been working properly for a while.
591 *) The return type of BIO_number_read() and BIO_number_written() as well as
592 the corresponding num_read and num_write members in the BIO structure has
593 changed from unsigned long to uint64_t. On platforms where an unsigned
594 long is 32 bits (e.g. Windows) these counters could overflow if >4Gb is
598 *) Given the pervasive nature of TLS extensions it is inadvisable to run
599 OpenSSL without support for them. It also means that maintaining
600 the OPENSSL_NO_TLSEXT option within the code is very invasive (and probably
601 not well tested). Therefore the OPENSSL_NO_TLSEXT option has been removed.
604 *) Removed support for the two export grade static DH ciphersuites
605 EXP-DH-RSA-DES-CBC-SHA and EXP-DH-DSS-DES-CBC-SHA. These two ciphersuites
606 were newly added (along with a number of other static DH ciphersuites) to
607 1.0.2. However the two export ones have *never* worked since they were
608 introduced. It seems strange in any case to be adding new export
609 ciphersuites, and given "logjam" it also does not seem correct to fix them.
612 *) Version negotiation has been rewritten. In particular SSLv23_method(),
613 SSLv23_client_method() and SSLv23_server_method() have been deprecated,
614 and turned into macros which simply call the new preferred function names
615 TLS_method(), TLS_client_method() and TLS_server_method(). All new code
616 should use the new names instead. Also as part of this change the ssl23.h
617 header file has been removed.
620 *) Support for Kerberos ciphersuites in TLS (RFC2712) has been removed. This
621 code and the associated standard is no longer considered fit-for-purpose.
624 *) RT2547 was closed. When generating a private key, try to make the
625 output file readable only by the owner. This behavior change might
626 be noticeable when interacting with other software.
628 *) Documented all exdata functions. Added CRYPTO_free_ex_index.
632 *) Added HTTP GET support to the ocsp command.
635 *) Changed default digest for the dgst and enc commands from MD5 to
639 *) RAND_pseudo_bytes has been deprecated. Users should use RAND_bytes instead.
642 *) Added support for TLS extended master secret from
643 draft-ietf-tls-session-hash-03.txt. Thanks for Alfredo Pironti for an
644 initial patch which was a great help during development.
647 *) All libssl internal structures have been removed from the public header
648 files, and the OPENSSL_NO_SSL_INTERN option has been removed (since it is
649 now redundant). Users should not attempt to access internal structures
650 directly. Instead they should use the provided API functions.
653 *) config has been changed so that by default OPENSSL_NO_DEPRECATED is used.
654 Access to deprecated functions can be re-enabled by running config with
655 "enable-deprecated". In addition applications wishing to use deprecated
656 functions must define OPENSSL_USE_DEPRECATED. Note that this new behaviour
657 will, by default, disable some transitive includes that previously existed
658 in the header files (e.g. ec.h will no longer, by default, include bn.h)
661 *) Added support for OCB mode. OpenSSL has been granted a patent license
662 compatible with the OpenSSL license for use of OCB. Details are available
663 at https://www.openssl.org/source/OCB-patent-grant-OpenSSL.pdf. Support
664 for OCB can be removed by calling config with no-ocb.
667 *) SSLv2 support has been removed. It still supports receiving a SSLv2
668 compatible client hello.
671 *) Increased the minimal RSA keysize from 256 to 512 bits [Rich Salz],
672 done while fixing the error code for the key-too-small case.
673 [Annie Yousar <a.yousar@informatik.hu-berlin.de>]
675 *) CA.sh has been removmed; use CA.pl instead.
678 *) Removed old DES API.
681 *) Remove various unsupported platforms:
687 Sinix/ReliantUNIX RM400
692 16-bit platforms such as WIN16
695 *) Clean up OPENSSL_NO_xxx #define's
696 Use setbuf() and remove OPENSSL_NO_SETVBUF_IONBF
697 Rename OPENSSL_SYSNAME_xxx to OPENSSL_SYS_xxx
698 OPENSSL_NO_EC{DH,DSA} merged into OPENSSL_NO_EC
699 OPENSSL_NO_RIPEMD160, OPENSSL_NO_RIPEMD merged into OPENSSL_NO_RMD160
700 OPENSSL_NO_FP_API merged into OPENSSL_NO_STDIO
701 Remove OPENSSL_NO_BIO OPENSSL_NO_BUFFER OPENSSL_NO_CHAIN_VERIFY
702 OPENSSL_NO_EVP OPENSSL_NO_FIPS_ERR OPENSSL_NO_HASH_COMP
703 OPENSSL_NO_LHASH OPENSSL_NO_OBJECT OPENSSL_NO_SPEED OPENSSL_NO_STACK
704 OPENSSL_NO_X509 OPENSSL_NO_X509_VERIFY
705 Remove MS_STATIC; it's a relic from platforms <32 bits.
708 *) Cleaned up dead code
709 Remove all but one '#ifdef undef' which is to be looked at.
712 *) Clean up calling of xxx_free routines.
713 Just like free(), fix most of the xxx_free routines to accept
714 NULL. Remove the non-null checks from callers. Save much code.
717 *) Add secure heap for storage of private keys (when possible).
718 Add BIO_s_secmem(), CBIGNUM, etc.
719 Contributed by Akamai Technologies under our Corporate CLA.
722 *) Experimental support for a new, fast, unbiased prime candidate generator,
723 bn_probable_prime_dh_coprime(). Not currently used by any prime generator.
724 [Felix Laurie von Massenbach <felix@erbridge.co.uk>]
726 *) New output format NSS in the sess_id command line tool. This allows
727 exporting the session id and the master key in NSS keylog format.
728 [Martin Kaiser <martin@kaiser.cx>]
730 *) Harmonize version and its documentation. -f flag is used to display
732 [mancha <mancha1@zoho.com>]
734 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
735 in i2d_ECPrivateKey. Thanks to Ted Unangst for feedback on this issue.
736 [mancha <mancha1@zoho.com>]
738 *) Fix some double frees. These are not thought to be exploitable.
739 [mancha <mancha1@zoho.com>]
741 *) A missing bounds check in the handling of the TLS heartbeat extension
742 can be used to reveal up to 64k of memory to a connected client or
745 Thanks for Neel Mehta of Google Security for discovering this bug and to
746 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
747 preparing the fix (CVE-2014-0160)
748 [Adam Langley, Bodo Moeller]
750 *) Fix for the attack described in the paper "Recovering OpenSSL
751 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
752 by Yuval Yarom and Naomi Benger. Details can be obtained from:
753 http://eprint.iacr.org/2014/140
755 Thanks to Yuval Yarom and Naomi Benger for discovering this
756 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
757 [Yuval Yarom and Naomi Benger]
759 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
760 this fixes a limitation in previous versions of OpenSSL.
763 *) Experimental encrypt-then-mac support.
765 Experimental support for encrypt then mac from
766 draft-gutmann-tls-encrypt-then-mac-02.txt
768 To enable it set the appropriate extension number (0x42 for the test
769 server) using e.g. -DTLSEXT_TYPE_encrypt_then_mac=0x42
771 For non-compliant peers (i.e. just about everything) this should have no
774 WARNING: EXPERIMENTAL, SUBJECT TO CHANGE.
778 *) Add EVP support for key wrapping algorithms, to avoid problems with
779 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
780 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
781 algorithms and include tests cases.
784 *) Extend CMS code to support RSA-PSS signatures and RSA-OAEP for
788 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
789 MGF1 digest and OAEP label.
792 *) Make openssl verify return errors.
793 [Chris Palmer <palmer@google.com> and Ben Laurie]
795 *) New function ASN1_TIME_diff to calculate the difference between two
796 ASN1_TIME structures or one structure and the current time.
799 *) Update fips_test_suite to support multiple command line options. New
800 test to induce all self test errors in sequence and check expected
804 *) Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and
805 sign or verify all in one operation.
808 *) Add fips_algvs: a multicall fips utility incorporating all the algorithm
809 test programs and fips_test_suite. Includes functionality to parse
810 the minimal script output of fipsalgest.pl directly.
813 *) Add authorisation parameter to FIPS_module_mode_set().
816 *) Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves.
819 *) Use separate DRBG fields for internal and external flags. New function
820 FIPS_drbg_health_check() to perform on demand health checking. Add
821 generation tests to fips_test_suite with reduced health check interval to
822 demonstrate periodic health checking. Add "nodh" option to
823 fips_test_suite to skip very slow DH test.
826 *) New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers
830 *) More extensive health check for DRBG checking many more failure modes.
831 New function FIPS_selftest_drbg_all() to handle every possible DRBG
832 combination: call this in fips_test_suite.
835 *) Add support for Dual EC DRBG from SP800-90. Update DRBG algorithm test
836 and POST to handle Dual EC cases.
839 *) Add support for canonical generation of DSA parameter 'g'. See
842 *) Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
843 POST to handle HMAC cases.
846 *) Add functions FIPS_module_version() and FIPS_module_version_text()
847 to return numerical and string versions of the FIPS module number.
850 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
851 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implemented
852 outside the validated module in the FIPS capable OpenSSL.
855 *) Minor change to DRBG entropy callback semantics. In some cases
856 there is no multiple of the block length between min_len and
857 max_len. Allow the callback to return more than max_len bytes
858 of entropy but discard any extra: it is the callback's responsibility
859 to ensure that the extra data discarded does not impact the
860 requested amount of entropy.
863 *) Add PRNG security strength checks to RSA, DSA and ECDSA using
864 information in FIPS186-3, SP800-57 and SP800-131A.
867 *) CCM support via EVP. Interface is very similar to GCM case except we
868 must supply all data in one chunk (i.e. no update, final) and the
869 message length must be supplied if AAD is used. Add algorithm test
873 *) Initial version of POST overhaul. Add POST callback to allow the status
874 of POST to be monitored and/or failures induced. Modify fips_test_suite
875 to use callback. Always run all selftests even if one fails.
878 *) XTS support including algorithm test driver in the fips_gcmtest program.
879 Note: this does increase the maximum key length from 32 to 64 bytes but
880 there should be no binary compatibility issues as existing applications
881 will never use XTS mode.
884 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
885 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
886 performs algorithm blocking for unapproved PRNG types. Also do not
887 set PRNG type in FIPS_mode_set(): leave this to the application.
888 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
889 the standard OpenSSL PRNG: set additional data to a date time vector.
892 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
893 This shouldn't present any incompatibility problems because applications
894 shouldn't be using these directly and any that are will need to rethink
895 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
898 *) Extensive self tests and health checking required by SP800-90 DRBG.
899 Remove strength parameter from FIPS_drbg_instantiate and always
900 instantiate at maximum supported strength.
903 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
906 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
909 *) New function DH_compute_key_padded() to compute a DH key and pad with
910 leading zeroes if needed: this complies with SP800-56A et al.
913 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
914 anything, incomplete, subject to change and largely untested at present.
917 *) Modify fipscanisteronly build option to only build the necessary object
918 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
921 *) Add experimental option FIPSSYMS to give all symbols in
922 fipscanister.o and FIPS or fips prefix. This will avoid
923 conflicts with future versions of OpenSSL. Add perl script
924 util/fipsas.pl to preprocess assembly language source files
925 and rename any affected symbols.
928 *) Add selftest checks and algorithm block of non-fips algorithms in
929 FIPS mode. Remove DES2 from selftests.
932 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
933 return internal method without any ENGINE dependencies. Add new
934 tiny fips sign and verify functions.
937 *) New build option no-ec2m to disable characteristic 2 code.
940 *) New build option "fipscanisteronly". This only builds fipscanister.o
941 and (currently) associated fips utilities. Uses the file Makefile.fips
942 instead of Makefile.org as the prototype.
945 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
946 Update fips_gcmtest to use IV generator.
949 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
950 setting output buffer to NULL. The *Final function must be
951 called although it will not retrieve any additional data. The tag
952 can be set or retrieved with a ctrl. The IV length is by default 12
953 bytes (96 bits) but can be set to an alternative value. If the IV
954 length exceeds the maximum IV length (currently 16 bytes) it cannot be
958 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
959 underlying do_cipher function handles all cipher semantics itself
960 including padding and finalisation. This is useful if (for example)
961 an ENGINE cipher handles block padding itself. The behaviour of
962 do_cipher is subtly changed if this flag is set: the return value
963 is the number of characters written to the output buffer (zero is
964 no longer an error code) or a negative error code. Also if the
965 input buffer is NULL and length 0 finalisation should be performed.
968 *) If a candidate issuer certificate is already part of the constructed
969 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
972 *) Improve forward-security support: add functions
974 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
975 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
977 for use by SSL/TLS servers; the callback function will be called whenever a
978 new session is created, and gets to decide whether the session may be
979 cached to make it resumable (return 0) or not (return 1). (As by the
980 SSL/TLS protocol specifications, the session_id sent by the server will be
981 empty to indicate that the session is not resumable; also, the server will
982 not generate RFC 4507 (RFC 5077) session tickets.)
984 A simple reasonable callback implementation is to return is_forward_secure.
985 This parameter will be set to 1 or 0 depending on the ciphersuite selected
986 by the SSL/TLS server library, indicating whether it can provide forward
988 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
990 *) New -verify_name option in command line utilities to set verification
994 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
995 Add CMAC pkey methods.
998 *) Experimental renegotiation in s_server -www mode. If the client
999 browses /reneg connection is renegotiated. If /renegcert it is
1000 renegotiated requesting a certificate.
1003 *) Add an "external" session cache for debugging purposes to s_server. This
1004 should help trace issues which normally are only apparent in deployed
1005 multi-process servers.
1008 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
1009 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
1010 BIO_set_cipher() and some obscure PEM functions were changed so they
1011 can now return an error. The RAND changes required a change to the
1012 RAND_METHOD structure.
1015 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
1016 a gcc attribute to warn if the result of a function is ignored. This
1017 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
1018 whose return value is often ignored.
1021 *) New -noct, -requestct, -requirect and -ctlogfile options for s_client.
1022 These allow SCTs (signed certificate timestamps) to be requested and
1023 validated when establishing a connection.
1024 [Rob Percival <robpercival@google.com>]
1026 Changes between 1.0.2g and 1.0.2h [3 May 2016]
1028 *) Prevent padding oracle in AES-NI CBC MAC check
1030 A MITM attacker can use a padding oracle attack to decrypt traffic
1031 when the connection uses an AES CBC cipher and the server support
1034 This issue was introduced as part of the fix for Lucky 13 padding
1035 attack (CVE-2013-0169). The padding check was rewritten to be in
1036 constant time by making sure that always the same bytes are read and
1037 compared against either the MAC or padding bytes. But it no longer
1038 checked that there was enough data to have both the MAC and padding
1041 This issue was reported by Juraj Somorovsky using TLS-Attacker.
1045 *) Fix EVP_EncodeUpdate overflow
1047 An overflow can occur in the EVP_EncodeUpdate() function which is used for
1048 Base64 encoding of binary data. If an attacker is able to supply very large
1049 amounts of input data then a length check can overflow resulting in a heap
1052 Internally to OpenSSL the EVP_EncodeUpdate() function is primarily used by
1053 the PEM_write_bio* family of functions. These are mainly used within the
1054 OpenSSL command line applications, so any application which processes data
1055 from an untrusted source and outputs it as a PEM file should be considered
1056 vulnerable to this issue. User applications that call these APIs directly
1057 with large amounts of untrusted data may also be vulnerable.
1059 This issue was reported by Guido Vranken.
1063 *) Fix EVP_EncryptUpdate overflow
1065 An overflow can occur in the EVP_EncryptUpdate() function. If an attacker
1066 is able to supply very large amounts of input data after a previous call to
1067 EVP_EncryptUpdate() with a partial block then a length check can overflow
1068 resulting in a heap corruption. Following an analysis of all OpenSSL
1069 internal usage of the EVP_EncryptUpdate() function all usage is one of two
1070 forms. The first form is where the EVP_EncryptUpdate() call is known to be
1071 the first called function after an EVP_EncryptInit(), and therefore that
1072 specific call must be safe. The second form is where the length passed to
1073 EVP_EncryptUpdate() can be seen from the code to be some small value and
1074 therefore there is no possibility of an overflow. Since all instances are
1075 one of these two forms, it is believed that there can be no overflows in
1076 internal code due to this problem. It should be noted that
1077 EVP_DecryptUpdate() can call EVP_EncryptUpdate() in certain code paths.
1078 Also EVP_CipherUpdate() is a synonym for EVP_EncryptUpdate(). All instances
1079 of these calls have also been analysed too and it is believed there are no
1080 instances in internal usage where an overflow could occur.
1082 This issue was reported by Guido Vranken.
1086 *) Prevent ASN.1 BIO excessive memory allocation
1088 When ASN.1 data is read from a BIO using functions such as d2i_CMS_bio()
1089 a short invalid encoding can cause allocation of large amounts of memory
1090 potentially consuming excessive resources or exhausting memory.
1092 Any application parsing untrusted data through d2i BIO functions is
1093 affected. The memory based functions such as d2i_X509() are *not* affected.
1094 Since the memory based functions are used by the TLS library, TLS
1095 applications are not affected.
1097 This issue was reported by Brian Carpenter.
1103 ASN1 Strings that are over 1024 bytes can cause an overread in applications
1104 using the X509_NAME_oneline() function on EBCDIC systems. This could result
1105 in arbitrary stack data being returned in the buffer.
1107 This issue was reported by Guido Vranken.
1111 *) Modify behavior of ALPN to invoke callback after SNI/servername
1112 callback, such that updates to the SSL_CTX affect ALPN.
1115 *) Remove LOW from the DEFAULT cipher list. This removes singles DES from the
1119 *) Only remove the SSLv2 methods with the no-ssl2-method option. When the
1120 methods are enabled and ssl2 is disabled the methods return NULL.
1123 Changes between 1.0.2f and 1.0.2g [1 Mar 2016]
1125 * Disable weak ciphers in SSLv3 and up in default builds of OpenSSL.
1126 Builds that are not configured with "enable-weak-ssl-ciphers" will not
1127 provide any "EXPORT" or "LOW" strength ciphers.
1130 * Disable SSLv2 default build, default negotiation and weak ciphers. SSLv2
1131 is by default disabled at build-time. Builds that are not configured with
1132 "enable-ssl2" will not support SSLv2. Even if "enable-ssl2" is used,
1133 users who want to negotiate SSLv2 via the version-flexible SSLv23_method()
1134 will need to explicitly call either of:
1136 SSL_CTX_clear_options(ctx, SSL_OP_NO_SSLv2);
1138 SSL_clear_options(ssl, SSL_OP_NO_SSLv2);
1140 as appropriate. Even if either of those is used, or the application
1141 explicitly uses the version-specific SSLv2_method() or its client and
1142 server variants, SSLv2 ciphers vulnerable to exhaustive search key
1143 recovery have been removed. Specifically, the SSLv2 40-bit EXPORT
1144 ciphers, and SSLv2 56-bit DES are no longer available.
1148 *) Fix a double-free in DSA code
1150 A double free bug was discovered when OpenSSL parses malformed DSA private
1151 keys and could lead to a DoS attack or memory corruption for applications
1152 that receive DSA private keys from untrusted sources. This scenario is
1155 This issue was reported to OpenSSL by Adam Langley(Google/BoringSSL) using
1160 *) Disable SRP fake user seed to address a server memory leak.
1162 Add a new method SRP_VBASE_get1_by_user that handles the seed properly.
1164 SRP_VBASE_get_by_user had inconsistent memory management behaviour.
1165 In order to fix an unavoidable memory leak, SRP_VBASE_get_by_user
1166 was changed to ignore the "fake user" SRP seed, even if the seed
1169 Users should use SRP_VBASE_get1_by_user instead. Note that in
1170 SRP_VBASE_get1_by_user, caller must free the returned value. Note
1171 also that even though configuring the SRP seed attempts to hide
1172 invalid usernames by continuing the handshake with fake
1173 credentials, this behaviour is not constant time and no strong
1174 guarantees are made that the handshake is indistinguishable from
1175 that of a valid user.
1179 *) Fix BN_hex2bn/BN_dec2bn NULL pointer deref/heap corruption
1181 In the BN_hex2bn function the number of hex digits is calculated using an
1182 int value |i|. Later |bn_expand| is called with a value of |i * 4|. For
1183 large values of |i| this can result in |bn_expand| not allocating any
1184 memory because |i * 4| is negative. This can leave the internal BIGNUM data
1185 field as NULL leading to a subsequent NULL ptr deref. For very large values
1186 of |i|, the calculation |i * 4| could be a positive value smaller than |i|.
1187 In this case memory is allocated to the internal BIGNUM data field, but it
1188 is insufficiently sized leading to heap corruption. A similar issue exists
1189 in BN_dec2bn. This could have security consequences if BN_hex2bn/BN_dec2bn
1190 is ever called by user applications with very large untrusted hex/dec data.
1191 This is anticipated to be a rare occurrence.
1193 All OpenSSL internal usage of these functions use data that is not expected
1194 to be untrusted, e.g. config file data or application command line
1195 arguments. If user developed applications generate config file data based
1196 on untrusted data then it is possible that this could also lead to security
1197 consequences. This is also anticipated to be rare.
1199 This issue was reported to OpenSSL by Guido Vranken.
1203 *) Fix memory issues in BIO_*printf functions
1205 The internal |fmtstr| function used in processing a "%s" format string in
1206 the BIO_*printf functions could overflow while calculating the length of a
1207 string and cause an OOB read when printing very long strings.
1209 Additionally the internal |doapr_outch| function can attempt to write to an
1210 OOB memory location (at an offset from the NULL pointer) in the event of a
1211 memory allocation failure. In 1.0.2 and below this could be caused where
1212 the size of a buffer to be allocated is greater than INT_MAX. E.g. this
1213 could be in processing a very long "%s" format string. Memory leaks can
1216 The first issue may mask the second issue dependent on compiler behaviour.
1217 These problems could enable attacks where large amounts of untrusted data
1218 is passed to the BIO_*printf functions. If applications use these functions
1219 in this way then they could be vulnerable. OpenSSL itself uses these
1220 functions when printing out human-readable dumps of ASN.1 data. Therefore
1221 applications that print this data could be vulnerable if the data is from
1222 untrusted sources. OpenSSL command line applications could also be
1223 vulnerable where they print out ASN.1 data, or if untrusted data is passed
1224 as command line arguments.
1226 Libssl is not considered directly vulnerable. Additionally certificates etc
1227 received via remote connections via libssl are also unlikely to be able to
1228 trigger these issues because of message size limits enforced within libssl.
1230 This issue was reported to OpenSSL Guido Vranken.
1234 *) Side channel attack on modular exponentiation
1236 A side-channel attack was found which makes use of cache-bank conflicts on
1237 the Intel Sandy-Bridge microarchitecture which could lead to the recovery
1238 of RSA keys. The ability to exploit this issue is limited as it relies on
1239 an attacker who has control of code in a thread running on the same
1240 hyper-threaded core as the victim thread which is performing decryptions.
1242 This issue was reported to OpenSSL by Yuval Yarom, The University of
1243 Adelaide and NICTA, Daniel Genkin, Technion and Tel Aviv University, and
1244 Nadia Heninger, University of Pennsylvania with more information at
1245 http://cachebleed.info.
1249 *) Change the req app to generate a 2048-bit RSA/DSA key by default,
1250 if no keysize is specified with default_bits. This fixes an
1251 omission in an earlier change that changed all RSA/DSA key generation
1252 apps to use 2048 bits by default.
1255 Changes between 1.0.2e and 1.0.2f [28 Jan 2016]
1256 *) DH small subgroups
1258 Historically OpenSSL only ever generated DH parameters based on "safe"
1259 primes. More recently (in version 1.0.2) support was provided for
1260 generating X9.42 style parameter files such as those required for RFC 5114
1261 support. The primes used in such files may not be "safe". Where an
1262 application is using DH configured with parameters based on primes that are
1263 not "safe" then an attacker could use this fact to find a peer's private
1264 DH exponent. This attack requires that the attacker complete multiple
1265 handshakes in which the peer uses the same private DH exponent. For example
1266 this could be used to discover a TLS server's private DH exponent if it's
1267 reusing the private DH exponent or it's using a static DH ciphersuite.
1269 OpenSSL provides the option SSL_OP_SINGLE_DH_USE for ephemeral DH (DHE) in
1270 TLS. It is not on by default. If the option is not set then the server
1271 reuses the same private DH exponent for the life of the server process and
1272 would be vulnerable to this attack. It is believed that many popular
1273 applications do set this option and would therefore not be at risk.
1275 The fix for this issue adds an additional check where a "q" parameter is
1276 available (as is the case in X9.42 based parameters). This detects the
1277 only known attack, and is the only possible defense for static DH
1278 ciphersuites. This could have some performance impact.
1280 Additionally the SSL_OP_SINGLE_DH_USE option has been switched on by
1281 default and cannot be disabled. This could have some performance impact.
1283 This issue was reported to OpenSSL by Antonio Sanso (Adobe).
1287 *) SSLv2 doesn't block disabled ciphers
1289 A malicious client can negotiate SSLv2 ciphers that have been disabled on
1290 the server and complete SSLv2 handshakes even if all SSLv2 ciphers have
1291 been disabled, provided that the SSLv2 protocol was not also disabled via
1294 This issue was reported to OpenSSL on 26th December 2015 by Nimrod Aviram
1295 and Sebastian Schinzel.
1299 Changes between 1.0.2d and 1.0.2e [3 Dec 2015]
1301 *) BN_mod_exp may produce incorrect results on x86_64
1303 There is a carry propagating bug in the x86_64 Montgomery squaring
1304 procedure. No EC algorithms are affected. Analysis suggests that attacks
1305 against RSA and DSA as a result of this defect would be very difficult to
1306 perform and are not believed likely. Attacks against DH are considered just
1307 feasible (although very difficult) because most of the work necessary to
1308 deduce information about a private key may be performed offline. The amount
1309 of resources required for such an attack would be very significant and
1310 likely only accessible to a limited number of attackers. An attacker would
1311 additionally need online access to an unpatched system using the target
1312 private key in a scenario with persistent DH parameters and a private
1313 key that is shared between multiple clients. For example this can occur by
1314 default in OpenSSL DHE based SSL/TLS ciphersuites.
1316 This issue was reported to OpenSSL by Hanno Böck.
1320 *) Certificate verify crash with missing PSS parameter
1322 The signature verification routines will crash with a NULL pointer
1323 dereference if presented with an ASN.1 signature using the RSA PSS
1324 algorithm and absent mask generation function parameter. Since these
1325 routines are used to verify certificate signature algorithms this can be
1326 used to crash any certificate verification operation and exploited in a
1327 DoS attack. Any application which performs certificate verification is
1328 vulnerable including OpenSSL clients and servers which enable client
1331 This issue was reported to OpenSSL by Loïc Jonas Etienne (Qnective AG).
1335 *) X509_ATTRIBUTE memory leak
1337 When presented with a malformed X509_ATTRIBUTE structure OpenSSL will leak
1338 memory. This structure is used by the PKCS#7 and CMS routines so any
1339 application which reads PKCS#7 or CMS data from untrusted sources is
1340 affected. SSL/TLS is not affected.
1342 This issue was reported to OpenSSL by Adam Langley (Google/BoringSSL) using
1347 *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
1348 This changes the decoding behaviour for some invalid messages,
1349 though the change is mostly in the more lenient direction, and
1350 legacy behaviour is preserved as much as possible.
1353 *) In DSA_generate_parameters_ex, if the provided seed is too short,
1355 [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>]
1357 Changes between 1.0.2c and 1.0.2d [9 Jul 2015]
1359 *) Alternate chains certificate forgery
1361 During certificate verification, OpenSSL will attempt to find an
1362 alternative certificate chain if the first attempt to build such a chain
1363 fails. An error in the implementation of this logic can mean that an
1364 attacker could cause certain checks on untrusted certificates to be
1365 bypassed, such as the CA flag, enabling them to use a valid leaf
1366 certificate to act as a CA and "issue" an invalid certificate.
1368 This issue was reported to OpenSSL by Adam Langley/David Benjamin
1372 Changes between 1.0.2b and 1.0.2c [12 Jun 2015]
1374 *) Fix HMAC ABI incompatibility. The previous version introduced an ABI
1375 incompatibility in the handling of HMAC. The previous ABI has now been
1379 Changes between 1.0.2a and 1.0.2b [11 Jun 2015]
1381 *) Malformed ECParameters causes infinite loop
1383 When processing an ECParameters structure OpenSSL enters an infinite loop
1384 if the curve specified is over a specially malformed binary polynomial
1387 This can be used to perform denial of service against any
1388 system which processes public keys, certificate requests or
1389 certificates. This includes TLS clients and TLS servers with
1390 client authentication enabled.
1392 This issue was reported to OpenSSL by Joseph Barr-Pixton.
1396 *) Exploitable out-of-bounds read in X509_cmp_time
1398 X509_cmp_time does not properly check the length of the ASN1_TIME
1399 string and can read a few bytes out of bounds. In addition,
1400 X509_cmp_time accepts an arbitrary number of fractional seconds in the
1403 An attacker can use this to craft malformed certificates and CRLs of
1404 various sizes and potentially cause a segmentation fault, resulting in
1405 a DoS on applications that verify certificates or CRLs. TLS clients
1406 that verify CRLs are affected. TLS clients and servers with client
1407 authentication enabled may be affected if they use custom verification
1410 This issue was reported to OpenSSL by Robert Swiecki (Google), and
1411 independently by Hanno Böck.
1415 *) PKCS7 crash with missing EnvelopedContent
1417 The PKCS#7 parsing code does not handle missing inner EncryptedContent
1418 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs
1419 with missing content and trigger a NULL pointer dereference on parsing.
1421 Applications that decrypt PKCS#7 data or otherwise parse PKCS#7
1422 structures from untrusted sources are affected. OpenSSL clients and
1423 servers are not affected.
1425 This issue was reported to OpenSSL by Michal Zalewski (Google).
1429 *) CMS verify infinite loop with unknown hash function
1431 When verifying a signedData message the CMS code can enter an infinite loop
1432 if presented with an unknown hash function OID. This can be used to perform
1433 denial of service against any system which verifies signedData messages using
1435 This issue was reported to OpenSSL by Johannes Bauer.
1439 *) Race condition handling NewSessionTicket
1441 If a NewSessionTicket is received by a multi-threaded client when attempting to
1442 reuse a previous ticket then a race condition can occur potentially leading to
1443 a double free of the ticket data.
1447 *) Only support 256-bit or stronger elliptic curves with the
1448 'ecdh_auto' setting (server) or by default (client). Of supported
1449 curves, prefer P-256 (both).
1452 Changes between 1.0.2 and 1.0.2a [19 Mar 2015]
1454 *) ClientHello sigalgs DoS fix
1456 If a client connects to an OpenSSL 1.0.2 server and renegotiates with an
1457 invalid signature algorithms extension a NULL pointer dereference will
1458 occur. This can be exploited in a DoS attack against the server.
1460 This issue was was reported to OpenSSL by David Ramos of Stanford
1463 [Stephen Henson and Matt Caswell]
1465 *) Multiblock corrupted pointer fix
1467 OpenSSL 1.0.2 introduced the "multiblock" performance improvement. This
1468 feature only applies on 64 bit x86 architecture platforms that support AES
1469 NI instructions. A defect in the implementation of "multiblock" can cause
1470 OpenSSL's internal write buffer to become incorrectly set to NULL when
1471 using non-blocking IO. Typically, when the user application is using a
1472 socket BIO for writing, this will only result in a failed connection.
1473 However if some other BIO is used then it is likely that a segmentation
1474 fault will be triggered, thus enabling a potential DoS attack.
1476 This issue was reported to OpenSSL by Daniel Danner and Rainer Mueller.
1480 *) Segmentation fault in DTLSv1_listen fix
1482 The DTLSv1_listen function is intended to be stateless and processes the
1483 initial ClientHello from many peers. It is common for user code to loop
1484 over the call to DTLSv1_listen until a valid ClientHello is received with
1485 an associated cookie. A defect in the implementation of DTLSv1_listen means
1486 that state is preserved in the SSL object from one invocation to the next
1487 that can lead to a segmentation fault. Errors processing the initial
1488 ClientHello can trigger this scenario. An example of such an error could be
1489 that a DTLS1.0 only client is attempting to connect to a DTLS1.2 only
1492 This issue was reported to OpenSSL by Per Allansson.
1496 *) Segmentation fault in ASN1_TYPE_cmp fix
1498 The function ASN1_TYPE_cmp will crash with an invalid read if an attempt is
1499 made to compare ASN.1 boolean types. Since ASN1_TYPE_cmp is used to check
1500 certificate signature algorithm consistency this can be used to crash any
1501 certificate verification operation and exploited in a DoS attack. Any
1502 application which performs certificate verification is vulnerable including
1503 OpenSSL clients and servers which enable client authentication.
1507 *) Segmentation fault for invalid PSS parameters fix
1509 The signature verification routines will crash with a NULL pointer
1510 dereference if presented with an ASN.1 signature using the RSA PSS
1511 algorithm and invalid parameters. Since these routines are used to verify
1512 certificate signature algorithms this can be used to crash any
1513 certificate verification operation and exploited in a DoS attack. Any
1514 application which performs certificate verification is vulnerable including
1515 OpenSSL clients and servers which enable client authentication.
1517 This issue was was reported to OpenSSL by Brian Carpenter.
1521 *) ASN.1 structure reuse memory corruption fix
1523 Reusing a structure in ASN.1 parsing may allow an attacker to cause
1524 memory corruption via an invalid write. Such reuse is and has been
1525 strongly discouraged and is believed to be rare.
1527 Applications that parse structures containing CHOICE or ANY DEFINED BY
1528 components may be affected. Certificate parsing (d2i_X509 and related
1529 functions) are however not affected. OpenSSL clients and servers are
1534 *) PKCS7 NULL pointer dereferences fix
1536 The PKCS#7 parsing code does not handle missing outer ContentInfo
1537 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs with
1538 missing content and trigger a NULL pointer dereference on parsing.
1540 Applications that verify PKCS#7 signatures, decrypt PKCS#7 data or
1541 otherwise parse PKCS#7 structures from untrusted sources are
1542 affected. OpenSSL clients and servers are not affected.
1544 This issue was reported to OpenSSL by Michal Zalewski (Google).
1548 *) DoS via reachable assert in SSLv2 servers fix
1550 A malicious client can trigger an OPENSSL_assert (i.e., an abort) in
1551 servers that both support SSLv2 and enable export cipher suites by sending
1552 a specially crafted SSLv2 CLIENT-MASTER-KEY message.
1554 This issue was discovered by Sean Burford (Google) and Emilia Käsper
1555 (OpenSSL development team).
1559 *) Empty CKE with client auth and DHE fix
1561 If client auth is used then a server can seg fault in the event of a DHE
1562 ciphersuite being selected and a zero length ClientKeyExchange message
1563 being sent by the client. This could be exploited in a DoS attack.
1567 *) Handshake with unseeded PRNG fix
1569 Under certain conditions an OpenSSL 1.0.2 client can complete a handshake
1570 with an unseeded PRNG. The conditions are:
1571 - The client is on a platform where the PRNG has not been seeded
1572 automatically, and the user has not seeded manually
1573 - A protocol specific client method version has been used (i.e. not
1574 SSL_client_methodv23)
1575 - A ciphersuite is used that does not require additional random data from
1576 the PRNG beyond the initial ClientHello client random (e.g. PSK-RC4-SHA).
1578 If the handshake succeeds then the client random that has been used will
1579 have been generated from a PRNG with insufficient entropy and therefore the
1580 output may be predictable.
1582 For example using the following command with an unseeded openssl will
1583 succeed on an unpatched platform:
1585 openssl s_client -psk 1a2b3c4d -tls1_2 -cipher PSK-RC4-SHA
1589 *) Use After Free following d2i_ECPrivatekey error fix
1591 A malformed EC private key file consumed via the d2i_ECPrivateKey function
1592 could cause a use after free condition. This, in turn, could cause a double
1593 free in several private key parsing functions (such as d2i_PrivateKey
1594 or EVP_PKCS82PKEY) and could lead to a DoS attack or memory corruption
1595 for applications that receive EC private keys from untrusted
1596 sources. This scenario is considered rare.
1598 This issue was discovered by the BoringSSL project and fixed in their
1603 *) X509_to_X509_REQ NULL pointer deref fix
1605 The function X509_to_X509_REQ will crash with a NULL pointer dereference if
1606 the certificate key is invalid. This function is rarely used in practice.
1608 This issue was discovered by Brian Carpenter.
1612 *) Removed the export ciphers from the DEFAULT ciphers
1615 Changes between 1.0.1l and 1.0.2 [22 Jan 2015]
1617 *) Facilitate "universal" ARM builds targeting range of ARM ISAs, e.g.
1618 ARMv5 through ARMv8, as opposite to "locking" it to single one.
1619 So far those who have to target multiple platforms would compromise
1620 and argue that binary targeting say ARMv5 would still execute on
1621 ARMv8. "Universal" build resolves this compromise by providing
1622 near-optimal performance even on newer platforms.
1625 *) Accelerated NIST P-256 elliptic curve implementation for x86_64
1626 (other platforms pending).
1627 [Shay Gueron & Vlad Krasnov (Intel Corp), Andy Polyakov]
1629 *) Add support for the SignedCertificateTimestampList certificate and
1630 OCSP response extensions from RFC6962.
1633 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
1634 for corner cases. (Certain input points at infinity could lead to
1635 bogus results, with non-infinity inputs mapped to infinity too.)
1638 *) Initial support for PowerISA 2.0.7, first implemented in POWER8.
1639 This covers AES, SHA256/512 and GHASH. "Initial" means that most
1640 common cases are optimized and there still is room for further
1641 improvements. Vector Permutation AES for Altivec is also added.
1644 *) Add support for little-endian ppc64 Linux target.
1645 [Marcelo Cerri (IBM)]
1647 *) Initial support for AMRv8 ISA crypto extensions. This covers AES,
1648 SHA1, SHA256 and GHASH. "Initial" means that most common cases
1649 are optimized and there still is room for further improvements.
1650 Both 32- and 64-bit modes are supported.
1651 [Andy Polyakov, Ard Biesheuvel (Linaro)]
1653 *) Improved ARMv7 NEON support.
1656 *) Support for SPARC Architecture 2011 crypto extensions, first
1657 implemented in SPARC T4. This covers AES, DES, Camellia, SHA1,
1658 SHA256/512, MD5, GHASH and modular exponentiation.
1659 [Andy Polyakov, David Miller]
1661 *) Accelerated modular exponentiation for Intel processors, a.k.a.
1663 [Shay Gueron & Vlad Krasnov (Intel Corp)]
1665 *) Support for new and upcoming Intel processors, including AVX2,
1666 BMI and SHA ISA extensions. This includes additional "stitched"
1667 implementations, AESNI-SHA256 and GCM, and multi-buffer support
1670 This work was sponsored by Intel Corp.
1673 *) Support for DTLS 1.2. This adds two sets of DTLS methods: DTLS_*_method()
1674 supports both DTLS 1.2 and 1.0 and should use whatever version the peer
1675 supports and DTLSv1_2_*_method() which supports DTLS 1.2 only.
1678 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
1679 this fixes a limitation in previous versions of OpenSSL.
1682 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
1683 MGF1 digest and OAEP label.
1686 *) Add EVP support for key wrapping algorithms, to avoid problems with
1687 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
1688 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
1689 algorithms and include tests cases.
1692 *) Add functions to allocate and set the fields of an ECDSA_METHOD
1694 [Douglas E. Engert, Steve Henson]
1696 *) New functions OPENSSL_gmtime_diff and ASN1_TIME_diff to find the
1697 difference in days and seconds between two tm or ASN1_TIME structures.
1700 *) Add -rev test option to s_server to just reverse order of characters
1701 received by client and send back to server. Also prints an abbreviated
1702 summary of the connection parameters.
1705 *) New option -brief for s_client and s_server to print out a brief summary
1706 of connection parameters.
1709 *) Add callbacks for arbitrary TLS extensions.
1710 [Trevor Perrin <trevp@trevp.net> and Ben Laurie]
1712 *) New option -crl_download in several openssl utilities to download CRLs
1713 from CRLDP extension in certificates.
1716 *) New options -CRL and -CRLform for s_client and s_server for CRLs.
1719 *) New function X509_CRL_diff to generate a delta CRL from the difference
1720 of two full CRLs. Add support to "crl" utility.
1723 *) New functions to set lookup_crls function and to retrieve
1724 X509_STORE from X509_STORE_CTX.
1727 *) Print out deprecated issuer and subject unique ID fields in
1731 *) Extend OCSP I/O functions so they can be used for simple general purpose
1732 HTTP as well as OCSP. New wrapper function which can be used to download
1733 CRLs using the OCSP API.
1736 *) Delegate command line handling in s_client/s_server to SSL_CONF APIs.
1739 *) SSL_CONF* functions. These provide a common framework for application
1740 configuration using configuration files or command lines.
1743 *) SSL/TLS tracing code. This parses out SSL/TLS records using the
1744 message callback and prints the results. Needs compile time option
1745 "enable-ssl-trace". New options to s_client and s_server to enable
1749 *) New ctrl and macro to retrieve supported points extensions.
1750 Print out extension in s_server and s_client.
1753 *) New functions to retrieve certificate signature and signature
1757 *) Add functions to retrieve and manipulate the raw cipherlist sent by a
1761 *) New Suite B modes for TLS code. These use and enforce the requirements
1762 of RFC6460: restrict ciphersuites, only permit Suite B algorithms and
1763 only use Suite B curves. The Suite B modes can be set by using the
1764 strings "SUITEB128", "SUITEB192" or "SUITEB128ONLY" for the cipherstring.
1767 *) New chain verification flags for Suite B levels of security. Check
1768 algorithms are acceptable when flags are set in X509_verify_cert.
1771 *) Make tls1_check_chain return a set of flags indicating checks passed
1772 by a certificate chain. Add additional tests to handle client
1773 certificates: checks for matching certificate type and issuer name
1777 *) If an attempt is made to use a signature algorithm not in the peer
1778 preference list abort the handshake. If client has no suitable
1779 signature algorithms in response to a certificate request do not
1780 use the certificate.
1783 *) If server EC tmp key is not in client preference list abort handshake.
1786 *) Add support for certificate stores in CERT structure. This makes it
1787 possible to have different stores per SSL structure or one store in
1788 the parent SSL_CTX. Include distinct stores for certificate chain
1789 verification and chain building. New ctrl SSL_CTRL_BUILD_CERT_CHAIN
1790 to build and store a certificate chain in CERT structure: returing
1791 an error if the chain cannot be built: this will allow applications
1792 to test if a chain is correctly configured.
1794 Note: if the CERT based stores are not set then the parent SSL_CTX
1795 store is used to retain compatibility with existing behaviour.
1799 *) New function ssl_set_client_disabled to set a ciphersuite disabled
1800 mask based on the current session, check mask when sending client
1801 hello and checking the requested ciphersuite.
1804 *) New ctrls to retrieve and set certificate types in a certificate
1805 request message. Print out received values in s_client. If certificate
1806 types is not set with custom values set sensible values based on
1807 supported signature algorithms.
1810 *) Support for distinct client and server supported signature algorithms.
1813 *) Add certificate callback. If set this is called whenever a certificate
1814 is required by client or server. An application can decide which
1815 certificate chain to present based on arbitrary criteria: for example
1816 supported signature algorithms. Add very simple example to s_server.
1817 This fixes many of the problems and restrictions of the existing client
1818 certificate callback: for example you can now clear an existing
1819 certificate and specify the whole chain.
1822 *) Add new "valid_flags" field to CERT_PKEY structure which determines what
1823 the certificate can be used for (if anything). Set valid_flags field
1824 in new tls1_check_chain function. Simplify ssl_set_cert_masks which used
1825 to have similar checks in it.
1827 Add new "cert_flags" field to CERT structure and include a "strict mode".
1828 This enforces some TLS certificate requirements (such as only permitting
1829 certificate signature algorithms contained in the supported algorithms
1830 extension) which some implementations ignore: this option should be used
1831 with caution as it could cause interoperability issues.
1834 *) Update and tidy signature algorithm extension processing. Work out
1835 shared signature algorithms based on preferences and peer algorithms
1836 and print them out in s_client and s_server. Abort handshake if no
1837 shared signature algorithms.
1840 *) Add new functions to allow customised supported signature algorithms
1841 for SSL and SSL_CTX structures. Add options to s_client and s_server
1845 *) New function SSL_certs_clear() to delete all references to certificates
1846 from an SSL structure. Before this once a certificate had been added
1847 it couldn't be removed.
1850 *) Integrate hostname, email address and IP address checking with certificate
1851 verification. New verify options supporting checking in openssl utility.
1854 *) Fixes and wildcard matching support to hostname and email checking
1855 functions. Add manual page.
1856 [Florian Weimer (Red Hat Product Security Team)]
1858 *) New functions to check a hostname email or IP address against a
1859 certificate. Add options x509 utility to print results of checks against
1863 *) Fix OCSP checking.
1864 [Rob Stradling <rob.stradling@comodo.com> and Ben Laurie]
1866 *) Initial experimental support for explicitly trusted non-root CAs.
1867 OpenSSL still tries to build a complete chain to a root but if an
1868 intermediate CA has a trust setting included that is used. The first
1869 setting is used: whether to trust (e.g., -addtrust option to the x509
1873 *) Add -trusted_first option which attempts to find certificates in the
1874 trusted store even if an untrusted chain is also supplied.
1877 *) MIPS assembly pack updates: support for MIPS32r2 and SmartMIPS ASE,
1878 platform support for Linux and Android.
1881 *) Support for linux-x32, ILP32 environment in x86_64 framework.
1884 *) Experimental multi-implementation support for FIPS capable OpenSSL.
1885 When in FIPS mode the approved implementations are used as normal,
1886 when not in FIPS mode the internal unapproved versions are used instead.
1887 This means that the FIPS capable OpenSSL isn't forced to use the
1888 (often lower performance) FIPS implementations outside FIPS mode.
1891 *) Transparently support X9.42 DH parameters when calling
1892 PEM_read_bio_DHparameters. This means existing applications can handle
1893 the new parameter format automatically.
1896 *) Initial experimental support for X9.42 DH parameter format: mainly
1897 to support use of 'q' parameter for RFC5114 parameters.
1900 *) Add DH parameters from RFC5114 including test data to dhtest.
1903 *) Support for automatic EC temporary key parameter selection. If enabled
1904 the most preferred EC parameters are automatically used instead of
1905 hardcoded fixed parameters. Now a server just has to call:
1906 SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically
1907 support ECDH and use the most appropriate parameters.
1910 *) Enhance and tidy EC curve and point format TLS extension code. Use
1911 static structures instead of allocation if default values are used.
1912 New ctrls to set curves we wish to support and to retrieve shared curves.
1913 Print out shared curves in s_server. New options to s_server and s_client
1914 to set list of supported curves.
1917 *) New ctrls to retrieve supported signature algorithms and
1918 supported curve values as an array of NIDs. Extend openssl utility
1919 to print out received values.
1922 *) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert
1923 between NIDs and the more common NIST names such as "P-256". Enhance
1924 ecparam utility and ECC method to recognise the NIST names for curves.
1927 *) Enhance SSL/TLS certificate chain handling to support different
1928 chains for each certificate instead of one chain in the parent SSL_CTX.
1931 *) Support for fixed DH ciphersuite client authentication: where both
1932 server and client use DH certificates with common parameters.
1935 *) Support for fixed DH ciphersuites: those requiring DH server
1939 *) New function i2d_re_X509_tbs for re-encoding the TBS portion of
1941 Note: Related 1.0.2-beta specific macros X509_get_cert_info,
1942 X509_CINF_set_modified, X509_CINF_get_issuer, X509_CINF_get_extensions and
1943 X509_CINF_get_signature were reverted post internal team review.
1945 Changes between 1.0.1k and 1.0.1l [15 Jan 2015]
1947 *) Build fixes for the Windows and OpenVMS platforms
1948 [Matt Caswell and Richard Levitte]
1950 Changes between 1.0.1j and 1.0.1k [8 Jan 2015]
1952 *) Fix DTLS segmentation fault in dtls1_get_record. A carefully crafted DTLS
1953 message can cause a segmentation fault in OpenSSL due to a NULL pointer
1954 dereference. This could lead to a Denial Of Service attack. Thanks to
1955 Markus Stenberg of Cisco Systems, Inc. for reporting this issue.
1959 *) Fix DTLS memory leak in dtls1_buffer_record. A memory leak can occur in the
1960 dtls1_buffer_record function under certain conditions. In particular this
1961 could occur if an attacker sent repeated DTLS records with the same
1962 sequence number but for the next epoch. The memory leak could be exploited
1963 by an attacker in a Denial of Service attack through memory exhaustion.
1964 Thanks to Chris Mueller for reporting this issue.
1968 *) Fix issue where no-ssl3 configuration sets method to NULL. When openssl is
1969 built with the no-ssl3 option and a SSL v3 ClientHello is received the ssl
1970 method would be set to NULL which could later result in a NULL pointer
1971 dereference. Thanks to Frank Schmirler for reporting this issue.
1975 *) Abort handshake if server key exchange message is omitted for ephemeral
1978 Thanks to Karthikeyan Bhargavan of the PROSECCO team at INRIA for
1979 reporting this issue.
1983 *) Remove non-export ephemeral RSA code on client and server. This code
1984 violated the TLS standard by allowing the use of temporary RSA keys in
1985 non-export ciphersuites and could be used by a server to effectively
1986 downgrade the RSA key length used to a value smaller than the server
1987 certificate. Thanks for Karthikeyan Bhargavan of the PROSECCO team at
1988 INRIA or reporting this issue.
1992 *) Fixed issue where DH client certificates are accepted without verification.
1993 An OpenSSL server will accept a DH certificate for client authentication
1994 without the certificate verify message. This effectively allows a client to
1995 authenticate without the use of a private key. This only affects servers
1996 which trust a client certificate authority which issues certificates
1997 containing DH keys: these are extremely rare and hardly ever encountered.
1998 Thanks for Karthikeyan Bhargavan of the PROSECCO team at INRIA or reporting
2003 *) Ensure that the session ID context of an SSL is updated when its
2004 SSL_CTX is updated via SSL_set_SSL_CTX.
2006 The session ID context is typically set from the parent SSL_CTX,
2007 and can vary with the CTX.
2010 *) Fix various certificate fingerprint issues.
2012 By using non-DER or invalid encodings outside the signed portion of a
2013 certificate the fingerprint can be changed without breaking the signature.
2014 Although no details of the signed portion of the certificate can be changed
2015 this can cause problems with some applications: e.g. those using the
2016 certificate fingerprint for blacklists.
2018 1. Reject signatures with non zero unused bits.
2020 If the BIT STRING containing the signature has non zero unused bits reject
2021 the signature. All current signature algorithms require zero unused bits.
2023 2. Check certificate algorithm consistency.
2025 Check the AlgorithmIdentifier inside TBS matches the one in the
2026 certificate signature. NB: this will result in signature failure
2027 errors for some broken certificates.
2029 Thanks to Konrad Kraszewski from Google for reporting this issue.
2031 3. Check DSA/ECDSA signatures use DER.
2033 Reencode DSA/ECDSA signatures and compare with the original received
2034 signature. Return an error if there is a mismatch.
2036 This will reject various cases including garbage after signature
2037 (thanks to Antti Karjalainen and Tuomo Untinen from the Codenomicon CROSS
2038 program for discovering this case) and use of BER or invalid ASN.1 INTEGERs
2039 (negative or with leading zeroes).
2041 Further analysis was conducted and fixes were developed by Stephen Henson
2042 of the OpenSSL core team.
2047 *) Correct Bignum squaring. Bignum squaring (BN_sqr) may produce incorrect
2048 results on some platforms, including x86_64. This bug occurs at random
2049 with a very low probability, and is not known to be exploitable in any
2050 way, though its exact impact is difficult to determine. Thanks to Pieter
2051 Wuille (Blockstream) who reported this issue and also suggested an initial
2052 fix. Further analysis was conducted by the OpenSSL development team and
2053 Adam Langley of Google. The final fix was developed by Andy Polyakov of
2054 the OpenSSL core team.
2058 *) Do not resume sessions on the server if the negotiated protocol
2059 version does not match the session's version. Resuming with a different
2060 version, while not strictly forbidden by the RFC, is of questionable
2061 sanity and breaks all known clients.
2062 [David Benjamin, Emilia Käsper]
2064 *) Tighten handling of the ChangeCipherSpec (CCS) message: reject
2065 early CCS messages during renegotiation. (Note that because
2066 renegotiation is encrypted, this early CCS was not exploitable.)
2069 *) Tighten client-side session ticket handling during renegotiation:
2070 ensure that the client only accepts a session ticket if the server sends
2071 the extension anew in the ServerHello. Previously, a TLS client would
2072 reuse the old extension state and thus accept a session ticket if one was
2073 announced in the initial ServerHello.
2075 Similarly, ensure that the client requires a session ticket if one
2076 was advertised in the ServerHello. Previously, a TLS client would
2077 ignore a missing NewSessionTicket message.
2080 Changes between 1.0.1i and 1.0.1j [15 Oct 2014]
2082 *) SRTP Memory Leak.
2084 A flaw in the DTLS SRTP extension parsing code allows an attacker, who
2085 sends a carefully crafted handshake message, to cause OpenSSL to fail
2086 to free up to 64k of memory causing a memory leak. This could be
2087 exploited in a Denial Of Service attack. This issue affects OpenSSL
2088 1.0.1 server implementations for both SSL/TLS and DTLS regardless of
2089 whether SRTP is used or configured. Implementations of OpenSSL that
2090 have been compiled with OPENSSL_NO_SRTP defined are not affected.
2092 The fix was developed by the OpenSSL team.
2096 *) Session Ticket Memory Leak.
2098 When an OpenSSL SSL/TLS/DTLS server receives a session ticket the
2099 integrity of that ticket is first verified. In the event of a session
2100 ticket integrity check failing, OpenSSL will fail to free memory
2101 causing a memory leak. By sending a large number of invalid session
2102 tickets an attacker could exploit this issue in a Denial Of Service
2107 *) Build option no-ssl3 is incomplete.
2109 When OpenSSL is configured with "no-ssl3" as a build option, servers
2110 could accept and complete a SSL 3.0 handshake, and clients could be
2111 configured to send them.
2113 [Akamai and the OpenSSL team]
2115 *) Add support for TLS_FALLBACK_SCSV.
2116 Client applications doing fallback retries should call
2117 SSL_set_mode(s, SSL_MODE_SEND_FALLBACK_SCSV).
2119 [Adam Langley, Bodo Moeller]
2121 *) Add additional DigestInfo checks.
2123 Reencode DigestInto in DER and check against the original when
2124 verifying RSA signature: this will reject any improperly encoded
2125 DigestInfo structures.
2127 Note: this is a precautionary measure and no attacks are currently known.
2131 Changes between 1.0.1h and 1.0.1i [6 Aug 2014]
2133 *) Fix SRP buffer overrun vulnerability. Invalid parameters passed to the
2134 SRP code can be overrun an internal buffer. Add sanity check that
2135 g, A, B < N to SRP code.
2137 Thanks to Sean Devlin and Watson Ladd of Cryptography Services, NCC
2138 Group for discovering this issue.
2142 *) A flaw in the OpenSSL SSL/TLS server code causes the server to negotiate
2143 TLS 1.0 instead of higher protocol versions when the ClientHello message
2144 is badly fragmented. This allows a man-in-the-middle attacker to force a
2145 downgrade to TLS 1.0 even if both the server and the client support a
2146 higher protocol version, by modifying the client's TLS records.
2148 Thanks to David Benjamin and Adam Langley (Google) for discovering and
2149 researching this issue.
2153 *) OpenSSL DTLS clients enabling anonymous (EC)DH ciphersuites are subject
2154 to a denial of service attack. A malicious server can crash the client
2155 with a null pointer dereference (read) by specifying an anonymous (EC)DH
2156 ciphersuite and sending carefully crafted handshake messages.
2158 Thanks to Felix Gröbert (Google) for discovering and researching this
2163 *) By sending carefully crafted DTLS packets an attacker could cause openssl
2164 to leak memory. This can be exploited through a Denial of Service attack.
2165 Thanks to Adam Langley for discovering and researching this issue.
2169 *) An attacker can force openssl to consume large amounts of memory whilst
2170 processing DTLS handshake messages. This can be exploited through a
2171 Denial of Service attack.
2172 Thanks to Adam Langley for discovering and researching this issue.
2176 *) An attacker can force an error condition which causes openssl to crash
2177 whilst processing DTLS packets due to memory being freed twice. This
2178 can be exploited through a Denial of Service attack.
2179 Thanks to Adam Langley and Wan-Teh Chang for discovering and researching
2184 *) If a multithreaded client connects to a malicious server using a resumed
2185 session and the server sends an ec point format extension it could write
2186 up to 255 bytes to freed memory.
2188 Thanks to Gabor Tyukasz (LogMeIn Inc) for discovering and researching this
2193 *) A malicious server can crash an OpenSSL client with a null pointer
2194 dereference (read) by specifying an SRP ciphersuite even though it was not
2195 properly negotiated with the client. This can be exploited through a
2196 Denial of Service attack.
2198 Thanks to Joonas Kuorilehto and Riku Hietamäki (Codenomicon) for
2199 discovering and researching this issue.
2203 *) A flaw in OBJ_obj2txt may cause pretty printing functions such as
2204 X509_name_oneline, X509_name_print_ex et al. to leak some information
2205 from the stack. Applications may be affected if they echo pretty printing
2206 output to the attacker.
2208 Thanks to Ivan Fratric (Google) for discovering this issue.
2210 [Emilia Käsper, and Steve Henson]
2212 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
2213 for corner cases. (Certain input points at infinity could lead to
2214 bogus results, with non-infinity inputs mapped to infinity too.)
2217 Changes between 1.0.1g and 1.0.1h [5 Jun 2014]
2219 *) Fix for SSL/TLS MITM flaw. An attacker using a carefully crafted
2220 handshake can force the use of weak keying material in OpenSSL
2221 SSL/TLS clients and servers.
2223 Thanks to KIKUCHI Masashi (Lepidum Co. Ltd.) for discovering and
2224 researching this issue. (CVE-2014-0224)
2225 [KIKUCHI Masashi, Steve Henson]
2227 *) Fix DTLS recursion flaw. By sending an invalid DTLS handshake to an
2228 OpenSSL DTLS client the code can be made to recurse eventually crashing
2231 Thanks to Imre Rad (Search-Lab Ltd.) for discovering this issue.
2233 [Imre Rad, Steve Henson]
2235 *) Fix DTLS invalid fragment vulnerability. A buffer overrun attack can
2236 be triggered by sending invalid DTLS fragments to an OpenSSL DTLS
2237 client or server. This is potentially exploitable to run arbitrary
2238 code on a vulnerable client or server.
2240 Thanks to Jüri Aedla for reporting this issue. (CVE-2014-0195)
2241 [Jüri Aedla, Steve Henson]
2243 *) Fix bug in TLS code where clients enable anonymous ECDH ciphersuites
2244 are subject to a denial of service attack.
2246 Thanks to Felix Gröbert and Ivan Fratric at Google for discovering
2247 this issue. (CVE-2014-3470)
2248 [Felix Gröbert, Ivan Fratric, Steve Henson]
2250 *) Harmonize version and its documentation. -f flag is used to display
2252 [mancha <mancha1@zoho.com>]
2254 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
2255 in i2d_ECPrivateKey.
2256 [mancha <mancha1@zoho.com>]
2258 *) Fix some double frees. These are not thought to be exploitable.
2259 [mancha <mancha1@zoho.com>]
2261 Changes between 1.0.1f and 1.0.1g [7 Apr 2014]
2263 *) A missing bounds check in the handling of the TLS heartbeat extension
2264 can be used to reveal up to 64k of memory to a connected client or
2267 Thanks for Neel Mehta of Google Security for discovering this bug and to
2268 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
2269 preparing the fix (CVE-2014-0160)
2270 [Adam Langley, Bodo Moeller]
2272 *) Fix for the attack described in the paper "Recovering OpenSSL
2273 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
2274 by Yuval Yarom and Naomi Benger. Details can be obtained from:
2275 http://eprint.iacr.org/2014/140
2277 Thanks to Yuval Yarom and Naomi Benger for discovering this
2278 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
2279 [Yuval Yarom and Naomi Benger]
2281 *) TLS pad extension: draft-agl-tls-padding-03
2283 Workaround for the "TLS hang bug" (see FAQ and PR#2771): if the
2284 TLS client Hello record length value would otherwise be > 255 and
2285 less that 512 pad with a dummy extension containing zeroes so it
2286 is at least 512 bytes long.
2288 [Adam Langley, Steve Henson]
2290 Changes between 1.0.1e and 1.0.1f [6 Jan 2014]
2292 *) Fix for TLS record tampering bug. A carefully crafted invalid
2293 handshake could crash OpenSSL with a NULL pointer exception.
2294 Thanks to Anton Johansson for reporting this issues.
2297 *) Keep original DTLS digest and encryption contexts in retransmission
2298 structures so we can use the previous session parameters if they need
2299 to be resent. (CVE-2013-6450)
2302 *) Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which
2303 avoids preferring ECDHE-ECDSA ciphers when the client appears to be
2304 Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for
2305 several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug
2306 is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing
2307 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer.
2308 [Rob Stradling, Adam Langley]
2310 Changes between 1.0.1d and 1.0.1e [11 Feb 2013]
2312 *) Correct fix for CVE-2013-0169. The original didn't work on AES-NI
2313 supporting platforms or when small records were transferred.
2314 [Andy Polyakov, Steve Henson]
2316 Changes between 1.0.1c and 1.0.1d [5 Feb 2013]
2318 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
2320 This addresses the flaw in CBC record processing discovered by
2321 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
2322 at: http://www.isg.rhul.ac.uk/tls/
2324 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
2325 Security Group at Royal Holloway, University of London
2326 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
2327 Emilia Käsper for the initial patch.
2329 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
2331 *) Fix flaw in AESNI handling of TLS 1.2 and 1.1 records for CBC mode
2332 ciphersuites which can be exploited in a denial of service attack.
2333 Thanks go to and to Adam Langley <agl@chromium.org> for discovering
2334 and detecting this bug and to Wolfgang Ettlinger
2335 <wolfgang.ettlinger@gmail.com> for independently discovering this issue.
2339 *) Return an error when checking OCSP signatures when key is NULL.
2340 This fixes a DoS attack. (CVE-2013-0166)
2343 *) Make openssl verify return errors.
2344 [Chris Palmer <palmer@google.com> and Ben Laurie]
2346 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
2347 the right response is stapled. Also change SSL_get_certificate()
2348 so it returns the certificate actually sent.
2349 See http://rt.openssl.org/Ticket/Display.html?id=2836.
2350 [Rob Stradling <rob.stradling@comodo.com>]
2352 *) Fix possible deadlock when decoding public keys.
2355 *) Don't use TLS 1.0 record version number in initial client hello
2359 Changes between 1.0.1b and 1.0.1c [10 May 2012]
2361 *) Sanity check record length before skipping explicit IV in TLS
2362 1.2, 1.1 and DTLS to fix DoS attack.
2364 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
2365 fuzzing as a service testing platform.
2369 *) Initialise tkeylen properly when encrypting CMS messages.
2370 Thanks to Solar Designer of Openwall for reporting this issue.
2373 *) In FIPS mode don't try to use composite ciphers as they are not
2377 Changes between 1.0.1a and 1.0.1b [26 Apr 2012]
2379 *) OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and
2380 1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately
2381 mean any application compiled against OpenSSL 1.0.0 headers setting
2382 SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disablng
2383 TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to
2384 0x10000000L Any application which was previously compiled against
2385 OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1
2386 will need to be recompiled as a result. Letting be results in
2387 inability to disable specifically TLS 1.1 and in client context,
2388 in unlike event, limit maximum offered version to TLS 1.0 [see below].
2391 *) In order to ensure interoperabilty SSL_OP_NO_protocolX does not
2392 disable just protocol X, but all protocols above X *if* there are
2393 protocols *below* X still enabled. In more practical terms it means
2394 that if application wants to disable TLS1.0 in favor of TLS1.1 and
2395 above, it's not sufficient to pass SSL_OP_NO_TLSv1, one has to pass
2396 SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2. This applies to
2400 Changes between 1.0.1 and 1.0.1a [19 Apr 2012]
2402 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
2403 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
2404 in CRYPTO_realloc_clean.
2406 Thanks to Tavis Ormandy, Google Security Team, for discovering this
2407 issue and to Adam Langley <agl@chromium.org> for fixing it.
2409 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
2411 *) Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections.
2414 *) Workarounds for some broken servers that "hang" if a client hello
2415 record length exceeds 255 bytes.
2417 1. Do not use record version number > TLS 1.0 in initial client
2418 hello: some (but not all) hanging servers will now work.
2419 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate
2420 the number of ciphers sent in the client hello. This should be
2421 set to an even number, such as 50, for example by passing:
2422 -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure.
2423 Most broken servers should now work.
2424 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable
2425 TLS 1.2 client support entirely.
2428 *) Fix SEGV in Vector Permutation AES module observed in OpenSSH.
2431 Changes between 1.0.0h and 1.0.1 [14 Mar 2012]
2433 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET
2434 STRING form instead of a DigestInfo.
2437 *) The format used for MDC2 RSA signatures is inconsistent between EVP
2438 and the RSA_sign/RSA_verify functions. This was made more apparent when
2439 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
2440 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
2441 the correct format in RSA_verify so both forms transparently work.
2444 *) Some servers which support TLS 1.0 can choke if we initially indicate
2445 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
2446 encrypted premaster secret. As a workaround use the maximum permitted
2447 client version in client hello, this should keep such servers happy
2448 and still work with previous versions of OpenSSL.
2451 *) Add support for TLS/DTLS heartbeats.
2452 [Robin Seggelmann <seggelmann@fh-muenster.de>]
2454 *) Add support for SCTP.
2455 [Robin Seggelmann <seggelmann@fh-muenster.de>]
2457 *) Improved PRNG seeding for VOS.
2458 [Paul Green <Paul.Green@stratus.com>]
2460 *) Extensive assembler packs updates, most notably:
2462 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
2463 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
2464 - x86_64: bit-sliced AES implementation;
2465 - ARM: NEON support, contemporary platforms optimizations;
2466 - s390x: z196 support;
2467 - *: GHASH and GF(2^m) multiplication implementations;
2471 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
2472 (removal of unnecessary code)
2473 [Peter Sylvester <peter.sylvester@edelweb.fr>]
2475 *) Add TLS key material exporter from RFC 5705.
2478 *) Add DTLS-SRTP negotiation from RFC 5764.
2481 *) Add Next Protocol Negotiation,
2482 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
2483 disabled with a no-npn flag to config or Configure. Code donated
2485 [Adam Langley <agl@google.com> and Ben Laurie]
2487 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
2488 NIST-P256, NIST-P521, with constant-time single point multiplication on
2489 typical inputs. Compiler support for the nonstandard type __uint128_t is
2490 required to use this (present in gcc 4.4 and later, for 64-bit builds).
2491 Code made available under Apache License version 2.0.
2493 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
2494 line to include this in your build of OpenSSL, and run "make depend" (or
2495 "make update"). This enables the following EC_METHODs:
2497 EC_GFp_nistp224_method()
2498 EC_GFp_nistp256_method()
2499 EC_GFp_nistp521_method()
2501 EC_GROUP_new_by_curve_name() will automatically use these (while
2502 EC_GROUP_new_curve_GFp() currently prefers the more flexible
2504 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
2506 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
2507 all platforms. Move ssize_t definition from e_os.h to the public
2508 header file e_os2.h as it now appears in public header file cms.h
2511 *) New -sigopt option to the ca, req and x509 utilities. Additional
2512 signature parameters can be passed using this option and in
2516 *) Add RSA PSS signing function. This will generate and set the
2517 appropriate AlgorithmIdentifiers for PSS based on those in the
2518 corresponding EVP_MD_CTX structure. No application support yet.
2521 *) Support for companion algorithm specific ASN1 signing routines.
2522 New function ASN1_item_sign_ctx() signs a pre-initialised
2523 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
2524 the appropriate parameters.
2527 *) Add new algorithm specific ASN1 verification initialisation function
2528 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
2529 handling will be the same no matter what EVP_PKEY_METHOD is used.
2530 Add a PSS handler to support verification of PSS signatures: checked
2531 against a number of sample certificates.
2534 *) Add signature printing for PSS. Add PSS OIDs.
2535 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
2537 *) Add algorithm specific signature printing. An individual ASN1 method
2538 can now print out signatures instead of the standard hex dump.
2540 More complex signatures (e.g. PSS) can print out more meaningful
2541 information. Include DSA version that prints out the signature
2545 *) Password based recipient info support for CMS library: implementing
2549 *) Split password based encryption into PBES2 and PBKDF2 functions. This
2550 neatly separates the code into cipher and PBE sections and is required
2551 for some algorithms that split PBES2 into separate pieces (such as
2552 password based CMS).
2555 *) Session-handling fixes:
2556 - Fix handling of connections that are resuming with a session ID,
2557 but also support Session Tickets.
2558 - Fix a bug that suppressed issuing of a new ticket if the client
2559 presented a ticket with an expired session.
2560 - Try to set the ticket lifetime hint to something reasonable.
2561 - Make tickets shorter by excluding irrelevant information.
2562 - On the client side, don't ignore renewed tickets.
2563 [Adam Langley, Bodo Moeller (Google)]
2565 *) Fix PSK session representation.
2568 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
2570 This work was sponsored by Intel.
2573 *) Add GCM support to TLS library. Some custom code is needed to split
2574 the IV between the fixed (from PRF) and explicit (from TLS record)
2575 portions. This adds all GCM ciphersuites supported by RFC5288 and
2576 RFC5289. Generalise some AES* cipherstrings to include GCM and
2577 add a special AESGCM string for GCM only.
2580 *) Expand range of ctrls for AES GCM. Permit setting invocation
2581 field on decrypt and retrieval of invocation field only on encrypt.
2584 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
2585 As required by RFC5289 these ciphersuites cannot be used if for
2586 versions of TLS earlier than 1.2.
2589 *) For FIPS capable OpenSSL interpret a NULL default public key method
2590 as unset and return the appropriate default but do *not* set the default.
2591 This means we can return the appropriate method in applications that
2592 switch between FIPS and non-FIPS modes.
2595 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
2596 ENGINE is used then we cannot handle that in the FIPS module so we
2597 keep original code iff non-FIPS operations are allowed.
2600 *) Add -attime option to openssl utilities.
2601 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
2603 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
2606 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
2607 FIPS EC methods unconditionally for now.
2610 *) New build option no-ec2m to disable characteristic 2 code.
2613 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
2614 all cases can be covered as some introduce binary incompatibilities.
2617 *) Redirect RSA operations to FIPS module including keygen,
2618 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
2621 *) Add similar low level API blocking to ciphers.
2624 *) Low level digest APIs are not approved in FIPS mode: any attempt
2625 to use these will cause a fatal error. Applications that *really* want
2626 to use them can use the private_* version instead.
2629 *) Redirect cipher operations to FIPS module for FIPS builds.
2632 *) Redirect digest operations to FIPS module for FIPS builds.
2635 *) Update build system to add "fips" flag which will link in fipscanister.o
2636 for static and shared library builds embedding a signature if needed.
2639 *) Output TLS supported curves in preference order instead of numerical
2640 order. This is currently hardcoded for the highest order curves first.
2641 This should be configurable so applications can judge speed vs strength.
2644 *) Add TLS v1.2 server support for client authentication.
2647 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
2651 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
2652 FIPS modules versions.
2655 *) Add TLS v1.2 client side support for client authentication. Keep cache
2656 of handshake records longer as we don't know the hash algorithm to use
2657 until after the certificate request message is received.
2660 *) Initial TLS v1.2 client support. Add a default signature algorithms
2661 extension including all the algorithms we support. Parse new signature
2662 format in client key exchange. Relax some ECC signing restrictions for
2663 TLS v1.2 as indicated in RFC5246.
2666 *) Add server support for TLS v1.2 signature algorithms extension. Switch
2667 to new signature format when needed using client digest preference.
2668 All server ciphersuites should now work correctly in TLS v1.2. No client
2669 support yet and no support for client certificates.
2672 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
2673 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
2674 ciphersuites. At present only RSA key exchange ciphersuites work with
2675 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
2676 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
2677 and version checking.
2680 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
2681 with this defined it will not be affected by any changes to ssl internal
2682 structures. Add several utility functions to allow openssl application
2683 to work with OPENSSL_NO_SSL_INTERN defined.
2687 [Tom Wu <tjw@cs.stanford.edu> and Ben Laurie]
2689 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
2692 *) Permit abbreviated handshakes when renegotiating using the function
2693 SSL_renegotiate_abbreviated().
2694 [Robin Seggelmann <seggelmann@fh-muenster.de>]
2696 *) Add call to ENGINE_register_all_complete() to
2697 ENGINE_load_builtin_engines(), so some implementations get used
2698 automatically instead of needing explicit application support.
2701 *) Add support for TLS key exporter as described in RFC5705.
2702 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
2704 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
2705 a few changes are required:
2707 Add SSL_OP_NO_TLSv1_1 flag.
2708 Add TLSv1_1 methods.
2709 Update version checking logic to handle version 1.1.
2710 Add explicit IV handling (ported from DTLS code).
2711 Add command line options to s_client/s_server.
2714 Changes between 1.0.0g and 1.0.0h [12 Mar 2012]
2716 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
2717 in CMS and PKCS7 code. When RSA decryption fails use a random key for
2718 content decryption and always return the same error. Note: this attack
2719 needs on average 2^20 messages so it only affects automated senders. The
2720 old behaviour can be reenabled in the CMS code by setting the
2721 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
2722 an MMA defence is not necessary.
2723 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
2724 this issue. (CVE-2012-0884)
2727 *) Fix CVE-2011-4619: make sure we really are receiving a
2728 client hello before rejecting multiple SGC restarts. Thanks to
2729 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
2732 Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
2734 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
2735 Thanks to Antonio Martin, Enterprise Secure Access Research and
2736 Development, Cisco Systems, Inc. for discovering this bug and
2737 preparing a fix. (CVE-2012-0050)
2740 Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
2742 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
2743 of the Vaudenay padding oracle attack on CBC mode encryption
2744 which enables an efficient plaintext recovery attack against
2745 the OpenSSL implementation of DTLS. Their attack exploits timing
2746 differences arising during decryption processing. A research
2747 paper describing this attack can be found at:
2748 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
2749 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
2750 Security Group at Royal Holloway, University of London
2751 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
2752 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
2753 for preparing the fix. (CVE-2011-4108)
2754 [Robin Seggelmann, Michael Tuexen]
2756 *) Clear bytes used for block padding of SSL 3.0 records.
2758 [Adam Langley (Google)]
2760 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
2761 Kadianakis <desnacked@gmail.com> for discovering this issue and
2762 Adam Langley for preparing the fix. (CVE-2011-4619)
2763 [Adam Langley (Google)]
2765 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
2766 [Andrey Kulikov <amdeich@gmail.com>]
2768 *) Prevent malformed RFC3779 data triggering an assertion failure.
2769 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
2770 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
2771 [Rob Austein <sra@hactrn.net>]
2773 *) Improved PRNG seeding for VOS.
2774 [Paul Green <Paul.Green@stratus.com>]
2776 *) Fix ssl_ciph.c set-up race.
2777 [Adam Langley (Google)]
2779 *) Fix spurious failures in ecdsatest.c.
2780 [Emilia Käsper (Google)]
2782 *) Fix the BIO_f_buffer() implementation (which was mixing different
2783 interpretations of the '..._len' fields).
2784 [Adam Langley (Google)]
2786 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
2787 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
2788 threads won't reuse the same blinding coefficients.
2790 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
2791 lock to call BN_BLINDING_invert_ex, and avoids one use of
2792 BN_BLINDING_update for each BN_BLINDING structure (previously,
2793 the last update always remained unused).
2794 [Emilia Käsper (Google)]
2796 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
2797 [Bob Buckholz (Google)]
2799 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
2801 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
2802 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
2803 [Kaspar Brand <ossl@velox.ch>]
2805 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
2806 for multi-threaded use of ECDH. (CVE-2011-3210)
2807 [Adam Langley (Google)]
2809 *) Fix x509_name_ex_d2i memory leak on bad inputs.
2812 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
2813 signature public key algorithm by using OID xref utilities instead.
2814 Before this you could only use some ECC ciphersuites with SHA1 only.
2817 *) Add protection against ECDSA timing attacks as mentioned in the paper
2818 by Billy Bob Brumley and Nicola Tuveri, see:
2820 http://eprint.iacr.org/2011/232.pdf
2822 [Billy Bob Brumley and Nicola Tuveri]
2824 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
2826 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
2827 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
2829 *) Fix bug in string printing code: if *any* escaping is enabled we must
2830 escape the escape character (backslash) or the resulting string is
2834 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
2836 *) Disable code workaround for ancient and obsolete Netscape browsers
2837 and servers: an attacker can use it in a ciphersuite downgrade attack.
2838 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
2841 *) Fixed J-PAKE implementation error, originally discovered by
2842 Sebastien Martini, further info and confirmation from Stefan
2843 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
2846 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
2848 *) Fix extension code to avoid race conditions which can result in a buffer
2849 overrun vulnerability: resumed sessions must not be modified as they can
2850 be shared by multiple threads. CVE-2010-3864
2853 *) Fix WIN32 build system to correctly link an ENGINE directory into
2857 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
2859 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
2861 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
2863 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
2865 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
2866 context. The operation can be customised via the ctrl mechanism in
2867 case ENGINEs want to include additional functionality.
2870 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
2873 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
2874 output hashes compatible with older versions of OpenSSL.
2875 [Willy Weisz <weisz@vcpc.univie.ac.at>]
2877 *) Fix compression algorithm handling: if resuming a session use the
2878 compression algorithm of the resumed session instead of determining
2879 it from client hello again. Don't allow server to change algorithm.
2882 *) Add load_crls() function to apps tidying load_certs() too. Add option
2883 to verify utility to allow additional CRLs to be included.
2886 *) Update OCSP request code to permit adding custom headers to the request:
2887 some responders need this.
2890 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
2892 [Julia Lawall <julia@diku.dk>]
2894 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
2895 needlessly dereferenced structures, used obsolete functions and
2896 didn't handle all updated verify codes correctly.
2899 *) Disable MD2 in the default configuration.
2902 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
2903 indicate the initial BIO being pushed or popped. This makes it possible
2904 to determine whether the BIO is the one explicitly called or as a result
2905 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
2906 it handles reference counts correctly and doesn't zero out the I/O bio
2907 when it is not being explicitly popped. WARNING: applications which
2908 included workarounds for the old buggy behaviour will need to be modified
2909 or they could free up already freed BIOs.
2912 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
2913 renaming to all platforms (within the 0.9.8 branch, this was
2914 done conditionally on Netware platforms to avoid a name clash).
2915 [Guenter <lists@gknw.net>]
2917 *) Add ECDHE and PSK support to DTLS.
2918 [Michael Tuexen <tuexen@fh-muenster.de>]
2920 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
2924 *) Add "missing" function EVP_MD_flags() (without this the only way to
2925 retrieve a digest flags is by accessing the structure directly. Update
2926 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
2927 or cipher is registered as in the "from" argument. Print out all
2928 registered digests in the dgst usage message instead of manually
2929 attempting to work them out.
2932 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
2933 this allows the use of compression and extensions. Change default cipher
2934 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
2935 by default unless an application cipher string requests it.
2938 *) Alter match criteria in PKCS12_parse(). It used to try to use local
2939 key ids to find matching certificates and keys but some PKCS#12 files
2940 don't follow the (somewhat unwritten) rules and this strategy fails.
2941 Now just gather all certificates together and the first private key
2942 then look for the first certificate that matches the key.
2945 *) Support use of registered digest and cipher names for dgst and cipher
2946 commands instead of having to add each one as a special case. So now
2953 openssl dgst -sha256 foo
2955 and this works for ENGINE based algorithms too.
2959 *) Update Gost ENGINE to support parameter files.
2960 [Victor B. Wagner <vitus@cryptocom.ru>]
2962 *) Support GeneralizedTime in ca utility.
2963 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
2965 *) Enhance the hash format used for certificate directory links. The new
2966 form uses the canonical encoding (meaning equivalent names will work
2967 even if they aren't identical) and uses SHA1 instead of MD5. This form
2968 is incompatible with the older format and as a result c_rehash should
2969 be used to rebuild symbolic links.
2972 *) Make PKCS#8 the default write format for private keys, replacing the
2973 traditional format. This form is standardised, more secure and doesn't
2974 include an implicit MD5 dependency.
2977 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
2978 committed to OpenSSL should pass this lot as a minimum.
2981 *) Add session ticket override functionality for use by EAP-FAST.
2982 [Jouni Malinen <j@w1.fi>]
2984 *) Modify HMAC functions to return a value. Since these can be implemented
2985 in an ENGINE errors can occur.
2988 *) Type-checked OBJ_bsearch_ex.
2991 *) Type-checked OBJ_bsearch. Also some constification necessitated
2992 by type-checking. Still to come: TXT_DB, bsearch(?),
2993 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
2997 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
2998 seconds to a tm structure directly, instead of going through OS
2999 specific date routines. This avoids any issues with OS routines such
3000 as the year 2038 bug. New *_adj() functions for ASN1 time structures
3001 and X509_time_adj_ex() to cover the extended range. The existing
3002 X509_time_adj() is still usable and will no longer have any date issues.
3005 *) Delta CRL support. New use deltas option which will attempt to locate
3006 and search any appropriate delta CRLs available.
3008 This work was sponsored by Google.
3011 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
3012 code and add additional score elements. Validate alternate CRL paths
3013 as part of the CRL checking and indicate a new error "CRL path validation
3014 error" in this case. Applications wanting additional details can use
3015 the verify callback and check the new "parent" field. If this is not
3016 NULL CRL path validation is taking place. Existing applications wont
3017 see this because it requires extended CRL support which is off by
3020 This work was sponsored by Google.
3023 *) Support for freshest CRL extension.
3025 This work was sponsored by Google.
3028 *) Initial indirect CRL support. Currently only supported in the CRLs
3029 passed directly and not via lookup. Process certificate issuer
3030 CRL entry extension and lookup CRL entries by bother issuer name
3031 and serial number. Check and process CRL issuer entry in IDP extension.
3033 This work was sponsored by Google.
3036 *) Add support for distinct certificate and CRL paths. The CRL issuer
3037 certificate is validated separately in this case. Only enabled if
3038 an extended CRL support flag is set: this flag will enable additional
3039 CRL functionality in future.
3041 This work was sponsored by Google.
3044 *) Add support for policy mappings extension.
3046 This work was sponsored by Google.
3049 *) Fixes to pathlength constraint, self issued certificate handling,
3050 policy processing to align with RFC3280 and PKITS tests.
3052 This work was sponsored by Google.
3055 *) Support for name constraints certificate extension. DN, email, DNS
3056 and URI types are currently supported.
3058 This work was sponsored by Google.
3061 *) To cater for systems that provide a pointer-based thread ID rather
3062 than numeric, deprecate the current numeric thread ID mechanism and
3063 replace it with a structure and associated callback type. This
3064 mechanism allows a numeric "hash" to be extracted from a thread ID in
3065 either case, and on platforms where pointers are larger than 'long',
3066 mixing is done to help ensure the numeric 'hash' is usable even if it
3067 can't be guaranteed unique. The default mechanism is to use "&errno"
3068 as a pointer-based thread ID to distinguish between threads.
3070 Applications that want to provide their own thread IDs should now use
3071 CRYPTO_THREADID_set_callback() to register a callback that will call
3072 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
3074 Note that ERR_remove_state() is now deprecated, because it is tied
3075 to the assumption that thread IDs are numeric. ERR_remove_state(0)
3076 to free the current thread's error state should be replaced by
3077 ERR_remove_thread_state(NULL).
3079 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
3080 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
3081 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
3082 application was previously providing a numeric thread callback that
3083 was inappropriate for distinguishing threads, then uniqueness might
3084 have been obtained with &errno that happened immediately in the
3085 intermediate development versions of OpenSSL; this is no longer the
3086 case, the numeric thread callback will now override the automatic use
3088 [Geoff Thorpe, with help from Bodo Moeller]
3090 *) Initial support for different CRL issuing certificates. This covers a
3091 simple case where the self issued certificates in the chain exist and
3092 the real CRL issuer is higher in the existing chain.
3094 This work was sponsored by Google.
3097 *) Removed effectively defunct crypto/store from the build.
3100 *) Revamp of STACK to provide stronger type-checking. Still to come:
3101 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
3102 ASN1_STRING, CONF_VALUE.
3105 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
3106 RAM on SSL connections. This option can save about 34k per idle SSL.
3109 *) Revamp of LHASH to provide stronger type-checking. Still to come:
3110 STACK, TXT_DB, bsearch, qsort.
3113 *) Initial support for Cryptographic Message Syntax (aka CMS) based
3114 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
3115 support for data, signedData, compressedData, digestedData and
3116 encryptedData, envelopedData types included. Scripts to check against
3117 RFC4134 examples draft and interop and consistency checks of many
3118 content types and variants.
3121 *) Add options to enc utility to support use of zlib compression BIO.
3124 *) Extend mk1mf to support importing of options and assembly language
3125 files from Configure script, currently only included in VC-WIN32.
3126 The assembly language rules can now optionally generate the source
3127 files from the associated perl scripts.
3130 *) Implement remaining functionality needed to support GOST ciphersuites.
3131 Interop testing has been performed using CryptoPro implementations.
3132 [Victor B. Wagner <vitus@cryptocom.ru>]
3134 *) s390x assembler pack.
3137 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
3141 *) Implement Opaque PRF Input TLS extension as specified in
3142 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
3143 official specification yet and no extension type assignment by
3144 IANA exists, this extension (for now) will have to be explicitly
3145 enabled when building OpenSSL by providing the extension number
3146 to use. For example, specify an option
3148 -DTLSEXT_TYPE_opaque_prf_input=0x9527
3150 to the "config" or "Configure" script to enable the extension,
3151 assuming extension number 0x9527 (which is a completely arbitrary
3152 and unofficial assignment based on the MD5 hash of the Internet
3153 Draft). Note that by doing so, you potentially lose
3154 interoperability with other TLS implementations since these might
3155 be using the same extension number for other purposes.
3157 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
3158 opaque PRF input value to use in the handshake. This will create
3159 an interal copy of the length-'len' string at 'src', and will
3160 return non-zero for success.
3162 To get more control and flexibility, provide a callback function
3165 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
3166 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
3170 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
3173 Callback function 'cb' will be called in handshakes, and is
3174 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
3175 Argument 'arg' is for application purposes (the value as given to
3176 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
3177 be provided to the callback function). The callback function
3178 has to return non-zero to report success: usually 1 to use opaque
3179 PRF input just if possible, or 2 to enforce use of the opaque PRF
3180 input. In the latter case, the library will abort the handshake
3181 if opaque PRF input is not successfully negotiated.
3183 Arguments 'peerinput' and 'len' given to the callback function
3184 will always be NULL and 0 in the case of a client. A server will
3185 see the client's opaque PRF input through these variables if
3186 available (NULL and 0 otherwise). Note that if the server
3187 provides an opaque PRF input, the length must be the same as the
3188 length of the client's opaque PRF input.
3190 Note that the callback function will only be called when creating
3191 a new session (session resumption can resume whatever was
3192 previously negotiated), and will not be called in SSL 2.0
3193 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
3194 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
3195 for applications that need to enforce opaque PRF input.
3199 *) Update ssl code to support digests other than SHA1+MD5 for handshake
3202 [Victor B. Wagner <vitus@cryptocom.ru>]
3204 *) Add RFC4507 support to OpenSSL. This includes the corrections in
3205 RFC4507bis. The encrypted ticket format is an encrypted encoded
3206 SSL_SESSION structure, that way new session features are automatically
3209 If a client application caches session in an SSL_SESSION structure
3210 support is transparent because tickets are now stored in the encoded
3213 The SSL_CTX structure automatically generates keys for ticket
3214 protection in servers so again support should be possible
3215 with no application modification.
3217 If a client or server wishes to disable RFC4507 support then the option
3218 SSL_OP_NO_TICKET can be set.
3220 Add a TLS extension debugging callback to allow the contents of any client
3221 or server extensions to be examined.
3223 This work was sponsored by Google.
3226 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
3227 OpenSSL should now compile cleanly on gcc 4.2
3228 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
3230 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
3231 support including streaming MAC support: this is required for GOST
3232 ciphersuite support.
3233 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
3235 *) Add option -stream to use PKCS#7 streaming in smime utility. New
3236 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
3237 to output in BER and PEM format.
3240 *) Experimental support for use of HMAC via EVP_PKEY interface. This
3241 allows HMAC to be handled via the EVP_DigestSign*() interface. The
3242 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
3243 ENGINE support for HMAC keys which are unextractable. New -mac and
3244 -macopt options to dgst utility.
3247 *) New option -sigopt to dgst utility. Update dgst to use
3248 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
3249 alternative signing parameters such as X9.31 or PSS in the dgst
3253 *) Change ssl_cipher_apply_rule(), the internal function that does
3254 the work each time a ciphersuite string requests enabling
3255 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
3256 removing ("!foo+bar") a class of ciphersuites: Now it maintains
3257 the order of disabled ciphersuites such that those ciphersuites
3258 that most recently went from enabled to disabled not only stay
3259 in order with respect to each other, but also have higher priority
3260 than other disabled ciphersuites the next time ciphersuites are
3263 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
3264 the same ciphersuites as with "HIGH" alone, but in a specific
3265 order where the PSK ciphersuites come first (since they are the
3266 most recently disabled ciphersuites when "HIGH" is parsed).
3268 Also, change ssl_create_cipher_list() (using this new
3269 funcionality) such that between otherwise identical
3270 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
3274 *) Change ssl_create_cipher_list() so that it automatically
3275 arranges the ciphersuites in reasonable order before starting
3276 to process the rule string. Thus, the definition for "DEFAULT"
3277 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
3278 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
3279 This makes it much easier to arrive at a reasonable default order
3280 in applications for which anonymous ciphers are OK (meaning
3281 that you can't actually use DEFAULT).
3282 [Bodo Moeller; suggested by Victor Duchovni]
3284 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
3285 processing) into multiple integers instead of setting
3286 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
3287 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
3288 (These masks as well as the individual bit definitions are hidden
3289 away into the non-exported interface ssl/ssl_locl.h, so this
3290 change to the definition of the SSL_CIPHER structure shouldn't
3291 affect applications.) This give us more bits for each of these
3292 categories, so there is no longer a need to coagulate AES128 and
3293 AES256 into a single algorithm bit, and to coagulate Camellia128
3294 and Camellia256 into a single algorithm bit, which has led to all
3297 Thus, among other things, the kludge introduced in 0.9.7m and
3298 0.9.8e for masking out AES256 independently of AES128 or masking
3299 out Camellia256 independently of AES256 is not needed here in 0.9.9.
3301 With the change, we also introduce new ciphersuite aliases that
3302 so far were missing: "AES128", "AES256", "CAMELLIA128", and
3306 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
3307 Use the leftmost N bytes of the signature input if the input is
3308 larger than the prime q (with N being the size in bytes of q).
3311 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
3312 it yet and it is largely untested.
3315 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
3318 *) Initial incomplete changes to avoid need for function casts in OpenSSL
3319 some compilers (gcc 4.2 and later) reject their use. Safestack is
3320 reimplemented. Update ASN1 to avoid use of legacy functions.
3323 *) Win32/64 targets are linked with Winsock2.
3326 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
3327 to external functions. This can be used to increase CRL handling
3328 efficiency especially when CRLs are very large by (for example) storing
3329 the CRL revoked certificates in a database.
3332 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
3333 new CRLs added to a directory can be used. New command line option
3334 -verify_return_error to s_client and s_server. This causes real errors
3335 to be returned by the verify callback instead of carrying on no matter
3336 what. This reflects the way a "real world" verify callback would behave.
3339 *) GOST engine, supporting several GOST algorithms and public key formats.
3340 Kindly donated by Cryptocom.
3343 *) Partial support for Issuing Distribution Point CRL extension. CRLs
3344 partitioned by DP are handled but no indirect CRL or reason partitioning
3345 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
3346 selected via a scoring technique which handles IDP and AKID in CRLs.
3349 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
3350 will ultimately be used for all verify operations: this will remove the
3351 X509_STORE dependency on certificate verification and allow alternative
3352 lookup methods. X509_STORE based implementations of these two callbacks.
3355 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
3356 Modify get_crl() to find a valid (unexpired) CRL if possible.
3359 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
3360 this would be called X509_CRL_cmp() but that name is already used by
3361 a function that just compares CRL issuer names. Cache several CRL
3362 extensions in X509_CRL structure and cache CRLDP in X509.
3365 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
3366 this maps equivalent X509_NAME structures into a consistent structure.
3367 Name comparison can then be performed rapidly using memcmp().
3370 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
3374 *) Allow digests to supply their own micalg string for S/MIME type using
3375 the ctrl EVP_MD_CTRL_MICALG.
3378 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
3379 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
3380 ctrl. It can then customise the structure before and/or after signing
3384 *) New function OBJ_add_sigid() to allow application defined signature OIDs
3385 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
3386 to free up any added signature OIDs.
3389 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
3390 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
3391 digest and cipher tables. New options added to openssl utility:
3392 list-message-digest-algorithms and list-cipher-algorithms.
3395 *) Change the array representation of binary polynomials: the list
3396 of degrees of non-zero coefficients is now terminated with -1.
3397 Previously it was terminated with 0, which was also part of the
3398 value; thus, the array representation was not applicable to
3399 polynomials where t^0 has coefficient zero. This change makes
3400 the array representation useful in a more general context.
3403 *) Various modifications and fixes to SSL/TLS cipher string
3404 handling. For ECC, the code now distinguishes between fixed ECDH
3405 with RSA certificates on the one hand and with ECDSA certificates
3406 on the other hand, since these are separate ciphersuites. The
3407 unused code for Fortezza ciphersuites has been removed.
3409 For consistency with EDH, ephemeral ECDH is now called "EECDH"
3410 (not "ECDHE"). For consistency with the code for DH
3411 certificates, use of ECDH certificates is now considered ECDH
3412 authentication, not RSA or ECDSA authentication (the latter is
3413 merely the CA's signing algorithm and not actively used in the
3416 The temporary ciphersuite alias "ECCdraft" is no longer
3417 available, and ECC ciphersuites are no longer excluded from "ALL"
3418 and "DEFAULT". The following aliases now exist for RFC 4492
3419 ciphersuites, most of these by analogy with the DH case:
3421 kECDHr - ECDH cert, signed with RSA
3422 kECDHe - ECDH cert, signed with ECDSA
3423 kECDH - ECDH cert (signed with either RSA or ECDSA)
3424 kEECDH - ephemeral ECDH
3425 ECDH - ECDH cert or ephemeral ECDH
3431 AECDH - anonymous ECDH
3432 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
3436 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
3437 Use correct micalg parameters depending on digest(s) in signed message.
3440 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
3441 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
3444 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
3445 an engine to register a method. Add ENGINE lookups for methods and
3446 functional reference processing.
3449 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
3450 EVP_{Sign,Verify}* which allow an application to customise the signature
3454 *) New -resign option to smime utility. This adds one or more signers
3455 to an existing PKCS#7 signedData structure. Also -md option to use an
3456 alternative message digest algorithm for signing.
3459 *) Tidy up PKCS#7 routines and add new functions to make it easier to
3460 create PKCS7 structures containing multiple signers. Update smime
3461 application to support multiple signers.
3464 *) New -macalg option to pkcs12 utility to allow setting of an alternative
3468 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
3469 Reorganize PBE internals to lookup from a static table using NIDs,
3470 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
3471 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
3472 PRF which will be automatically used with PBES2.
3475 *) Replace the algorithm specific calls to generate keys in "req" with the
3479 *) Update PKCS#7 enveloped data routines to use new API. This is now
3480 supported by any public key method supporting the encrypt operation. A
3481 ctrl is added to allow the public key algorithm to examine or modify
3482 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
3486 *) Add a ctrl to asn1 method to allow a public key algorithm to express
3487 a default digest type to use. In most cases this will be SHA1 but some
3488 algorithms (such as GOST) need to specify an alternative digest. The
3489 return value indicates how strong the preference is 1 means optional and
3490 2 is mandatory (that is it is the only supported type). Modify
3491 ASN1_item_sign() to accept a NULL digest argument to indicate it should
3492 use the default md. Update openssl utilities to use the default digest
3493 type for signing if it is not explicitly indicated.
3496 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
3497 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
3498 signing method from the key type. This effectively removes the link
3499 between digests and public key types.
3502 *) Add an OID cross reference table and utility functions. Its purpose is to
3503 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
3504 rsaEncryption. This will allow some of the algorithm specific hackery
3505 needed to use the correct OID to be removed.
3508 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
3509 structures for PKCS7_sign(). They are now set up by the relevant public
3513 *) Add provisional EC pkey method with support for ECDSA and ECDH.
3516 *) Add support for key derivation (agreement) in the API, DH method and
3520 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
3521 public and private key formats. As a side effect these add additional
3522 command line functionality not previously available: DSA signatures can be
3523 generated and verified using pkeyutl and DH key support and generation in
3528 [Oliver Tappe <zooey@hirschkaefer.de>]
3530 *) New make target "install_html_docs" installs HTML renditions of the
3532 [Oliver Tappe <zooey@hirschkaefer.de>]
3534 *) New utility "genpkey" this is analogous to "genrsa" etc except it can
3535 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
3536 support key and parameter generation and add initial key generation
3537 functionality for RSA.
3540 *) Add functions for main EVP_PKEY_method operations. The undocumented
3541 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
3542 EVP_PKEY_{encrypt,decrypt}_old.
3545 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
3546 key API, doesn't do much yet.
3549 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
3550 public key algorithms. New option to openssl utility:
3551 "list-public-key-algorithms" to print out info.
3554 *) Implement the Supported Elliptic Curves Extension for
3555 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
3558 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
3559 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
3562 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
3563 utilities such as rsa, dsa, dsaparam etc except they process any key
3567 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
3568 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
3569 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
3573 *) Initial support for pluggable public key ASN1.
3574 De-spaghettify the public key ASN1 handling. Move public and private
3575 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
3576 algorithm specific handling to a single module within the relevant
3577 algorithm directory. Add functions to allow (near) opaque processing
3578 of public and private key structures.
3581 *) Implement the Supported Point Formats Extension for
3582 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
3585 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
3586 for the psk identity [hint] and the psk callback functions to the
3587 SSL_SESSION, SSL and SSL_CTX structure.
3590 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
3594 SSL_CTX_use_psk_identity_hint
3595 SSL_get_psk_identity_hint
3596 SSL_get_psk_identity
3597 SSL_use_psk_identity_hint
3599 [Mika Kousa and Pasi Eronen of Nokia Corporation]
3601 *) Add RFC 3161 compliant time stamp request creation, response generation
3602 and response verification functionality.
3603 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
3605 *) Add initial support for TLS extensions, specifically for the server_name
3606 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
3607 have new members for a host name. The SSL data structure has an
3608 additional member SSL_CTX *initial_ctx so that new sessions can be
3609 stored in that context to allow for session resumption, even after the
3610 SSL has been switched to a new SSL_CTX in reaction to a client's
3611 server_name extension.
3613 New functions (subject to change):
3615 SSL_get_servername()
3616 SSL_get_servername_type()
3619 New CTRL codes and macros (subject to change):
3621 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
3622 - SSL_CTX_set_tlsext_servername_callback()
3623 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
3624 - SSL_CTX_set_tlsext_servername_arg()
3625 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
3627 openssl s_client has a new '-servername ...' option.
3629 openssl s_server has new options '-servername_host ...', '-cert2 ...',
3630 '-key2 ...', '-servername_fatal' (subject to change). This allows
3631 testing the HostName extension for a specific single host name ('-cert'
3632 and '-key' remain fallbacks for handshakes without HostName
3633 negotiation). If the unrecognized_name alert has to be sent, this by
3634 default is a warning; it becomes fatal with the '-servername_fatal'
3637 [Peter Sylvester, Remy Allais, Christophe Renou]
3639 *) Whirlpool hash implementation is added.
3642 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
3643 bn(64,32). Because of instruction set limitations it doesn't have
3644 any negative impact on performance. This was done mostly in order
3645 to make it possible to share assembler modules, such as bn_mul_mont
3646 implementations, between 32- and 64-bit builds without hassle.
3649 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
3650 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
3654 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
3655 dedicated Montgomery multiplication procedure, is introduced.
3656 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
3657 "64-bit" performance on certain 32-bit targets.
3660 *) New option SSL_OP_NO_COMP to disable use of compression selectively
3661 in SSL structures. New SSL ctrl to set maximum send fragment size.
3662 Save memory by seeting the I/O buffer sizes dynamically instead of
3663 using the maximum available value.
3666 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
3667 in addition to the text details.
3670 *) Very, very preliminary EXPERIMENTAL support for printing of general
3671 ASN1 structures. This currently produces rather ugly output and doesn't
3672 handle several customised structures at all.
3675 *) Integrated support for PVK file format and some related formats such
3676 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
3677 these in the 'rsa' and 'dsa' utilities.
3680 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
3683 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
3684 place for the (very old) "NETSCAPE" format certificates which are now
3685 handled using new ASN1 code equivalents.
3688 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
3689 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
3690 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
3693 *) Modify CRL distribution points extension code to print out previously
3694 unsupported fields. Enhance extension setting code to allow setting of
3698 *) Add print and set support for Issuing Distribution Point CRL extension.
3701 *) Change 'Configure' script to enable Camellia by default.
3704 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
3706 *) When rejecting SSL/TLS records due to an incorrect version number, never
3707 update s->server with a new major version number. As of
3708 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
3709 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
3710 the previous behavior could result in a read attempt at NULL when
3711 receiving specific incorrect SSL/TLS records once record payload
3712 protection is active. (CVE-2010-0740)
3713 [Bodo Moeller, Adam Langley <agl@chromium.org>]
3715 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
3716 could be crashed if the relevant tables were not present (e.g. chrooted).
3717 [Tomas Hoger <thoger@redhat.com>]
3719 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
3721 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
3722 [Martin Olsson, Neel Mehta]
3724 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
3725 accommodate for stack sorting, always a write lock!).
3728 *) On some versions of WIN32 Heap32Next is very slow. This can cause
3729 excessive delays in the RAND_poll(): over a minute. As a workaround
3730 include a time check in the inner Heap32Next loop too.
3733 *) The code that handled flushing of data in SSL/TLS originally used the
3734 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
3735 the problem outlined in PR#1949. The fix suggested there however can
3736 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
3737 of Apache). So instead simplify the code to flush unconditionally.
3738 This should be fine since flushing with no data to flush is a no op.
3741 *) Handle TLS versions 2.0 and later properly and correctly use the
3742 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
3743 off ancient servers have a habit of sticking around for a while...
3746 *) Modify compression code so it frees up structures without using the
3747 ex_data callbacks. This works around a problem where some applications
3748 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
3749 restarting) then use compression (e.g. SSL with compression) later.
3750 This results in significant per-connection memory leaks and
3751 has caused some security issues including CVE-2008-1678 and
3755 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
3756 change when encrypting or decrypting.
3759 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
3760 connect and renegotiate with servers which do not support RI.
3761 Until RI is more widely deployed this option is enabled by default.
3764 *) Add "missing" ssl ctrls to clear options and mode.
3767 *) If client attempts to renegotiate and doesn't support RI respond with
3768 a no_renegotiation alert as required by RFC5746. Some renegotiating
3769 TLS clients will continue a connection gracefully when they receive
3770 the alert. Unfortunately OpenSSL mishandled this alert and would hang
3771 waiting for a server hello which it will never receive. Now we treat a
3772 received no_renegotiation alert as a fatal error. This is because
3773 applications requesting a renegotiation might well expect it to succeed
3774 and would have no code in place to handle the server denying it so the
3775 only safe thing to do is to terminate the connection.
3778 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
3779 peer supports secure renegotiation and 0 otherwise. Print out peer
3780 renegotiation support in s_client/s_server.
3783 *) Replace the highly broken and deprecated SPKAC certification method with
3784 the updated NID creation version. This should correctly handle UTF8.
3787 *) Implement RFC5746. Re-enable renegotiation but require the extension
3788 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
3789 turns out to be a bad idea. It has been replaced by
3790 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
3791 SSL_CTX_set_options(). This is really not recommended unless you
3792 know what you are doing.
3793 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
3795 *) Fixes to stateless session resumption handling. Use initial_ctx when
3796 issuing and attempting to decrypt tickets in case it has changed during
3797 servername handling. Use a non-zero length session ID when attempting
3798 stateless session resumption: this makes it possible to determine if
3799 a resumption has occurred immediately after receiving server hello
3800 (several places in OpenSSL subtly assume this) instead of later in
3804 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
3805 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
3806 fixes for a few places where the return code is not checked
3808 [Julia Lawall <julia@diku.dk>]
3810 *) Add --strict-warnings option to Configure script to include devteam
3811 warnings in other configurations.
3814 *) Add support for --libdir option and LIBDIR variable in makefiles. This
3815 makes it possible to install openssl libraries in locations which
3816 have names other than "lib", for example "/usr/lib64" which some
3818 [Steve Henson, based on patch from Jeremy Utley]
3820 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
3821 X690 8.9.12 and can produce some misleading textual output of OIDs.
3822 [Steve Henson, reported by Dan Kaminsky]
3824 *) Delete MD2 from algorithm tables. This follows the recommendation in
3825 several standards that it is not used in new applications due to
3826 several cryptographic weaknesses. For binary compatibility reasons
3827 the MD2 API is still compiled in by default.
3830 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
3834 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
3835 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
3837 [Guenter <lists@gknw.net>]
3839 *) Fix the server certificate chain building code to use X509_verify_cert(),
3840 it used to have an ad-hoc builder which was unable to cope with anything
3841 other than a simple chain.
3842 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
3844 *) Don't check self signed certificate signatures in X509_verify_cert()
3845 by default (a flag can override this): it just wastes time without
3846 adding any security. As a useful side effect self signed root CAs
3847 with non-FIPS digests are now usable in FIPS mode.
3850 *) In dtls1_process_out_of_seq_message() the check if the current message
3851 is already buffered was missing. For every new message was memory
3852 allocated, allowing an attacker to perform an denial of service attack
3853 with sending out of seq handshake messages until there is no memory
3854 left. Additionally every future messege was buffered, even if the
3855 sequence number made no sense and would be part of another handshake.
3856 So only messages with sequence numbers less than 10 in advance will be
3857 buffered. (CVE-2009-1378)
3858 [Robin Seggelmann, discovered by Daniel Mentz]
3860 *) Records are buffered if they arrive with a future epoch to be
3861 processed after finishing the corresponding handshake. There is
3862 currently no limitation to this buffer allowing an attacker to perform
3863 a DOS attack with sending records with future epochs until there is no
3864 memory left. This patch adds the pqueue_size() function to determine
3865 the size of a buffer and limits the record buffer to 100 entries.
3867 [Robin Seggelmann, discovered by Daniel Mentz]
3869 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
3870 parent structure is freed. (CVE-2009-1379)
3873 *) Handle non-blocking I/O properly in SSL_shutdown() call.
3874 [Darryl Miles <darryl-mailinglists@netbauds.net>]
3877 [Ilya O. <vrghost@gmail.com>]
3879 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
3881 *) Disable renegotiation completely - this fixes a severe security
3882 problem (CVE-2009-3555) at the cost of breaking all
3883 renegotiation. Renegotiation can be re-enabled by setting
3884 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
3885 run-time. This is really not recommended unless you know what
3889 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
3891 *) Don't set val to NULL when freeing up structures, it is freed up by
3892 underlying code. If sizeof(void *) > sizeof(long) this can result in
3893 zeroing past the valid field. (CVE-2009-0789)
3894 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
3896 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
3897 checked correctly. This would allow some invalid signed attributes to
3898 appear to verify correctly. (CVE-2009-0591)
3899 [Ivan Nestlerode <inestlerode@us.ibm.com>]
3901 *) Reject UniversalString and BMPString types with invalid lengths. This
3902 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
3903 a legal length. (CVE-2009-0590)
3906 *) Set S/MIME signing as the default purpose rather than setting it
3907 unconditionally. This allows applications to override it at the store
3911 *) Permit restricted recursion of ASN1 strings. This is needed in practice
3912 to handle some structures.
3915 *) Improve efficiency of mem_gets: don't search whole buffer each time
3917 [Jeremy Shapiro <jnshapir@us.ibm.com>]
3919 *) New -hex option for openssl rand.
3922 *) Print out UTF8String and NumericString when parsing ASN1.
3925 *) Support NumericString type for name components.
3928 *) Allow CC in the environment to override the automatically chosen
3929 compiler. Note that nothing is done to ensure flags work with the
3933 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
3935 *) Properly check EVP_VerifyFinal() and similar return values
3937 [Ben Laurie, Bodo Moeller, Google Security Team]
3939 *) Enable TLS extensions by default.
3942 *) Allow the CHIL engine to be loaded, whether the application is
3943 multithreaded or not. (This does not release the developer from the
3944 obligation to set up the dynamic locking callbacks.)
3945 [Sander Temme <sander@temme.net>]
3947 *) Use correct exit code if there is an error in dgst command.
3948 [Steve Henson; problem pointed out by Roland Dirlewanger]
3950 *) Tweak Configure so that you need to say "experimental-jpake" to enable
3951 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
3954 *) Add experimental JPAKE support, including demo authentication in
3955 s_client and s_server.
3958 *) Set the comparison function in v3_addr_canonize().
3959 [Rob Austein <sra@hactrn.net>]
3961 *) Add support for XMPP STARTTLS in s_client.
3962 [Philip Paeps <philip@freebsd.org>]
3964 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
3965 to ensure that even with this option, only ciphersuites in the
3966 server's preference list will be accepted. (Note that the option
3967 applies only when resuming a session, so the earlier behavior was
3968 just about the algorithm choice for symmetric cryptography.)
3971 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
3973 *) Fix NULL pointer dereference if a DTLS server received
3974 ChangeCipherSpec as first record (CVE-2009-1386).
3977 *) Fix a state transition in s3_srvr.c and d1_srvr.c
3978 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
3981 *) The fix in 0.9.8c that supposedly got rid of unsafe
3982 double-checked locking was incomplete for RSA blinding,
3983 addressing just one layer of what turns out to have been
3984 doubly unsafe triple-checked locking.
3986 So now fix this for real by retiring the MONT_HELPER macro
3987 in crypto/rsa/rsa_eay.c.
3989 [Bodo Moeller; problem pointed out by Marius Schilder]
3991 *) Various precautionary measures:
3993 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
3995 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
3996 (NB: This would require knowledge of the secret session ticket key
3997 to exploit, in which case you'd be SOL either way.)
3999 - Change bn_nist.c so that it will properly handle input BIGNUMs
4000 outside the expected range.
4002 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
4005 [Neel Mehta, Bodo Moeller]
4007 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
4008 the load fails. Useful for distros.
4009 [Ben Laurie and the FreeBSD team]
4011 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
4014 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
4017 *) Expand ENGINE to support engine supplied SSL client certificate functions.
4019 This work was sponsored by Logica.
4022 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
4023 keystores. Support for SSL/TLS client authentication too.
4024 Not compiled unless enable-capieng specified to Configure.
4026 This work was sponsored by Logica.
4029 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
4030 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
4031 attribute creation routines such as certifcate requests and PKCS#12
4035 Changes between 0.9.8g and 0.9.8h [28 May 2008]
4037 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
4038 handshake which could lead to a cilent crash as found using the
4039 Codenomicon TLS test suite (CVE-2008-1672)
4040 [Steve Henson, Mark Cox]
4042 *) Fix double free in TLS server name extensions which could lead to
4043 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
4046 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
4048 Clear the error queue to ensure that error entries left from
4049 older function calls do not interfere with the correct operation.
4050 [Lutz Jaenicke, Erik de Castro Lopo]
4052 *) Remove root CA certificates of commercial CAs:
4054 The OpenSSL project does not recommend any specific CA and does not
4055 have any policy with respect to including or excluding any CA.
4056 Therefore it does not make any sense to ship an arbitrary selection
4057 of root CA certificates with the OpenSSL software.
4060 *) RSA OAEP patches to fix two separate invalid memory reads.
4061 The first one involves inputs when 'lzero' is greater than
4062 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
4063 before the beginning of from). The second one involves inputs where
4064 the 'db' section contains nothing but zeroes (there is a one-byte
4065 invalid read after the end of 'db').
4066 [Ivan Nestlerode <inestlerode@us.ibm.com>]
4068 *) Partial backport from 0.9.9-dev:
4070 Introduce bn_mul_mont (dedicated Montgomery multiplication
4071 procedure) as a candidate for BIGNUM assembler implementation.
4072 While 0.9.9-dev uses assembler for various architectures, only
4073 x86_64 is available by default here in the 0.9.8 branch, and
4074 32-bit x86 is available through a compile-time setting.
4076 To try the 32-bit x86 assembler implementation, use Configure
4077 option "enable-montasm" (which exists only for this backport).
4079 As "enable-montasm" for 32-bit x86 disclaims code stability
4080 anyway, in this constellation we activate additional code
4081 backported from 0.9.9-dev for further performance improvements,
4082 namely BN_from_montgomery_word. (To enable this otherwise,
4083 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
4085 [Andy Polyakov (backport partially by Bodo Moeller)]
4087 *) Add TLS session ticket callback. This allows an application to set
4088 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
4089 values. This is useful for key rollover for example where several key
4090 sets may exist with different names.
4093 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
4094 This was broken until now in 0.9.8 releases, such that the only way
4095 a registered ENGINE could be used (assuming it initialises
4096 successfully on the host) was to explicitly set it as the default
4097 for the relevant algorithms. This is in contradiction with 0.9.7
4098 behaviour and the documentation. With this fix, when an ENGINE is
4099 registered into a given algorithm's table of implementations, the
4100 'uptodate' flag is reset so that auto-discovery will be used next
4101 time a new context for that algorithm attempts to select an
4103 [Ian Lister (tweaked by Geoff Thorpe)]
4105 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
4106 implemention in the following ways:
4108 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
4111 Lack of BER streaming support means one pass streaming processing is
4112 only supported if data is detached: setting the streaming flag is
4113 ignored for embedded content.
4115 CMS support is disabled by default and must be explicitly enabled
4116 with the enable-cms configuration option.
4119 *) Update the GMP engine glue to do direct copies between BIGNUM and
4120 mpz_t when openssl and GMP use the same limb size. Otherwise the
4121 existing "conversion via a text string export" trick is still used.
4122 [Paul Sheer <paulsheer@gmail.com>]
4124 *) Zlib compression BIO. This is a filter BIO which compressed and
4125 uncompresses any data passed through it.
4128 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
4129 RFC3394 compatible AES key wrapping.
4132 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
4133 sets string data without copying. X509_ALGOR_set0() and
4134 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
4135 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
4136 from an X509_ATTRIBUTE structure optionally checking it occurs only
4137 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
4141 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
4142 to get the expected BN_FLG_CONSTTIME behavior.
4143 [Bodo Moeller (Google)]
4147 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
4148 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
4149 - added some more tests to do_tests.pl
4150 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
4151 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
4152 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
4153 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
4154 - various changes to netware.pl to enable gcc-cross builds on Win32
4156 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
4157 - various changes to fix missing prototype warnings
4158 - fixed x86nasm.pl to create correct asm files for NASM COFF output
4159 - added AES, WHIRLPOOL and CPUID assembler code to build files
4160 - added missing AES assembler make rules to mk1mf.pl
4161 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
4162 [Guenter Knauf <eflash@gmx.net>]
4164 *) Implement certificate status request TLS extension defined in RFC3546.
4165 A client can set the appropriate parameters and receive the encoded
4166 OCSP response via a callback. A server can query the supplied parameters
4167 and set the encoded OCSP response in the callback. Add simplified examples
4168 to s_client and s_server.
4171 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
4173 *) Fix various bugs:
4174 + Binary incompatibility of ssl_ctx_st structure
4175 + DTLS interoperation with non-compliant servers
4176 + Don't call get_session_cb() without proposed session
4177 + Fix ia64 assembler code
4178 [Andy Polyakov, Steve Henson]
4180 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
4182 *) DTLS Handshake overhaul. There were longstanding issues with
4183 OpenSSL DTLS implementation, which were making it impossible for
4184 RFC 4347 compliant client to communicate with OpenSSL server.
4185 Unfortunately just fixing these incompatibilities would "cut off"
4186 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
4187 server keeps tolerating non RFC compliant syntax. The opposite is
4188 not true, 0.9.8f client can not communicate with earlier server.
4189 This update even addresses CVE-2007-4995.
4192 *) Changes to avoid need for function casts in OpenSSL: some compilers
4193 (gcc 4.2 and later) reject their use.
4194 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
4197 *) Add RFC4507 support to OpenSSL. This includes the corrections in
4198 RFC4507bis. The encrypted ticket format is an encrypted encoded
4199 SSL_SESSION structure, that way new session features are automatically
4202 If a client application caches session in an SSL_SESSION structure
4203 support is transparent because tickets are now stored in the encoded
4206 The SSL_CTX structure automatically generates keys for ticket
4207 protection in servers so again support should be possible
4208 with no application modification.
4210 If a client or server wishes to disable RFC4507 support then the option
4211 SSL_OP_NO_TICKET can be set.
4213 Add a TLS extension debugging callback to allow the contents of any client
4214 or server extensions to be examined.
4216 This work was sponsored by Google.
4219 *) Add initial support for TLS extensions, specifically for the server_name
4220 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
4221 have new members for a host name. The SSL data structure has an
4222 additional member SSL_CTX *initial_ctx so that new sessions can be
4223 stored in that context to allow for session resumption, even after the
4224 SSL has been switched to a new SSL_CTX in reaction to a client's
4225 server_name extension.
4227 New functions (subject to change):
4229 SSL_get_servername()
4230 SSL_get_servername_type()
4233 New CTRL codes and macros (subject to change):
4235 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
4236 - SSL_CTX_set_tlsext_servername_callback()
4237 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
4238 - SSL_CTX_set_tlsext_servername_arg()
4239 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
4241 openssl s_client has a new '-servername ...' option.
4243 openssl s_server has new options '-servername_host ...', '-cert2 ...',
4244 '-key2 ...', '-servername_fatal' (subject to change). This allows
4245 testing the HostName extension for a specific single host name ('-cert'
4246 and '-key' remain fallbacks for handshakes without HostName
4247 negotiation). If the unrecognized_name alert has to be sent, this by
4248 default is a warning; it becomes fatal with the '-servername_fatal'
4251 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
4253 *) Add AES and SSE2 assembly language support to VC++ build.
4256 *) Mitigate attack on final subtraction in Montgomery reduction.
4259 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
4260 (which previously caused an internal error).
4263 *) Squeeze another 10% out of IGE mode when in != out.
4266 *) AES IGE mode speedup.
4267 [Dean Gaudet (Google)]
4269 *) Add the Korean symmetric 128-bit cipher SEED (see
4270 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
4271 add SEED ciphersuites from RFC 4162:
4273 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
4274 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
4275 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
4276 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
4278 To minimize changes between patchlevels in the OpenSSL 0.9.8
4279 series, SEED remains excluded from compilation unless OpenSSL
4280 is configured with 'enable-seed'.
4281 [KISA, Bodo Moeller]
4283 *) Mitigate branch prediction attacks, which can be practical if a
4284 single processor is shared, allowing a spy process to extract
4285 information. For detailed background information, see
4286 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
4287 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
4288 and Necessary Software Countermeasures"). The core of the change
4289 are new versions BN_div_no_branch() and
4290 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
4291 respectively, which are slower, but avoid the security-relevant
4292 conditional branches. These are automatically called by BN_div()
4293 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
4294 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
4295 remove a conditional branch.
4297 BN_FLG_CONSTTIME is the new name for the previous
4298 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
4299 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
4300 in the exponent causes BN_mod_exp_mont() to use the alternative
4301 implementation in BN_mod_exp_mont_consttime().) The old name
4302 remains as a deprecated alias.
4304 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
4305 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
4306 constant-time implementations for more than just exponentiation.
4307 Here too the old name is kept as a deprecated alias.
4309 BN_BLINDING_new() will now use BN_dup() for the modulus so that
4310 the BN_BLINDING structure gets an independent copy of the
4311 modulus. This means that the previous "BIGNUM *m" argument to
4312 BN_BLINDING_new() and to BN_BLINDING_create_param() now
4313 essentially becomes "const BIGNUM *m", although we can't actually
4314 change this in the header file before 0.9.9. It allows
4315 RSA_setup_blinding() to use BN_with_flags() on the modulus to
4316 enable BN_FLG_CONSTTIME.
4318 [Matthew D Wood (Intel Corp)]
4320 *) In the SSL/TLS server implementation, be strict about session ID
4321 context matching (which matters if an application uses a single
4322 external cache for different purposes). Previously,
4323 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
4324 set. This did ensure strict client verification, but meant that,
4325 with applications using a single external cache for quite
4326 different requirements, clients could circumvent ciphersuite
4327 restrictions for a given session ID context by starting a session
4328 in a different context.
4331 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
4332 a ciphersuite string such as "DEFAULT:RSA" cannot enable
4333 authentication-only ciphersuites.
4336 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
4337 not complete and could lead to a possible single byte overflow
4338 (CVE-2007-5135) [Ben Laurie]
4340 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
4342 *) Since AES128 and AES256 (and similarly Camellia128 and
4343 Camellia256) share a single mask bit in the logic of
4344 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
4345 kludge to work properly if AES128 is available and AES256 isn't
4346 (or if Camellia128 is available and Camellia256 isn't).
4349 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
4350 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
4351 When a point or a seed is encoded in a BIT STRING, we need to
4352 prevent the removal of trailing zero bits to get the proper DER
4353 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
4354 of a NamedBitList, for which trailing 0 bits need to be removed.)
4357 *) Have SSL/TLS server implementation tolerate "mismatched" record
4358 protocol version while receiving ClientHello even if the
4359 ClientHello is fragmented. (The server can't insist on the
4360 particular protocol version it has chosen before the ServerHello
4361 message has informed the client about his choice.)
4364 *) Add RFC 3779 support.
4365 [Rob Austein for ARIN, Ben Laurie]
4367 *) Load error codes if they are not already present instead of using a
4368 static variable. This allows them to be cleanly unloaded and reloaded.
4369 Improve header file function name parsing.
4372 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
4373 or CAPABILITY handshake as required by RFCs.
4376 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
4378 *) Introduce limits to prevent malicious keys being able to
4379 cause a denial of service. (CVE-2006-2940)
4380 [Steve Henson, Bodo Moeller]
4382 *) Fix ASN.1 parsing of certain invalid structures that can result
4383 in a denial of service. (CVE-2006-2937) [Steve Henson]
4385 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
4386 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
4388 *) Fix SSL client code which could crash if connecting to a
4389 malicious SSLv2 server. (CVE-2006-4343)
4390 [Tavis Ormandy and Will Drewry, Google Security Team]
4392 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
4393 match only those. Before that, "AES256-SHA" would be interpreted
4394 as a pattern and match "AES128-SHA" too (since AES128-SHA got
4395 the same strength classification in 0.9.7h) as we currently only
4396 have a single AES bit in the ciphersuite description bitmap.
4397 That change, however, also applied to ciphersuite strings such as
4398 "RC4-MD5" that intentionally matched multiple ciphersuites --
4399 namely, SSL 2.0 ciphersuites in addition to the more common ones
4400 from SSL 3.0/TLS 1.0.
4402 So we change the selection algorithm again: Naming an explicit
4403 ciphersuite selects this one ciphersuite, and any other similar
4404 ciphersuite (same bitmap) from *other* protocol versions.
4405 Thus, "RC4-MD5" again will properly select both the SSL 2.0
4406 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
4408 Since SSL 2.0 does not have any ciphersuites for which the
4409 128/256 bit distinction would be relevant, this works for now.
4410 The proper fix will be to use different bits for AES128 and
4411 AES256, which would have avoided the problems from the beginning;
4412 however, bits are scarce, so we can only do this in a new release
4413 (not just a patchlevel) when we can change the SSL_CIPHER
4414 definition to split the single 'unsigned long mask' bitmap into
4415 multiple values to extend the available space.
4419 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
4421 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
4422 (CVE-2006-4339) [Ben Laurie and Google Security Team]
4424 *) Add AES IGE and biIGE modes.
4427 *) Change the Unix randomness entropy gathering to use poll() when
4428 possible instead of select(), since the latter has some
4429 undesirable limitations.
4430 [Darryl Miles via Richard Levitte and Bodo Moeller]
4432 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
4433 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
4434 cannot be implicitly activated as part of, e.g., the "AES" alias.
4435 However, please upgrade to OpenSSL 0.9.9[-dev] for
4436 non-experimental use of the ECC ciphersuites to get TLS extension
4437 support, which is required for curve and point format negotiation
4438 to avoid potential handshake problems.
4441 *) Disable rogue ciphersuites:
4443 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
4444 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
4445 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
4447 The latter two were purportedly from
4448 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
4451 Also deactivate the remaining ciphersuites from
4452 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
4453 unofficial, and the ID has long expired.
4456 *) Fix RSA blinding Heisenbug (problems sometimes occurred on
4457 dual-core machines) and other potential thread-safety issues.
4460 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
4461 versions), which is now available for royalty-free use
4462 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
4463 Also, add Camellia TLS ciphersuites from RFC 4132.
4465 To minimize changes between patchlevels in the OpenSSL 0.9.8
4466 series, Camellia remains excluded from compilation unless OpenSSL
4467 is configured with 'enable-camellia'.
4470 *) Disable the padding bug check when compression is in use. The padding
4471 bug check assumes the first packet is of even length, this is not
4472 necessarily true if compresssion is enabled and can result in false
4473 positives causing handshake failure. The actual bug test is ancient
4474 code so it is hoped that implementations will either have fixed it by
4475 now or any which still have the bug do not support compression.
4478 Changes between 0.9.8a and 0.9.8b [04 May 2006]
4480 *) When applying a cipher rule check to see if string match is an explicit
4481 cipher suite and only match that one cipher suite if it is.
4484 *) Link in manifests for VC++ if needed.
4485 [Austin Ziegler <halostatue@gmail.com>]
4487 *) Update support for ECC-based TLS ciphersuites according to
4488 draft-ietf-tls-ecc-12.txt with proposed changes (but without
4489 TLS extensions, which are supported starting with the 0.9.9
4490 branch, not in the OpenSSL 0.9.8 branch).
4493 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
4494 opaque EVP_CIPHER_CTX handling.
4497 *) Fixes and enhancements to zlib compression code. We now only use
4498 "zlib1.dll" and use the default __cdecl calling convention on Win32
4499 to conform with the standards mentioned here:
4500 http://www.zlib.net/DLL_FAQ.txt
4501 Static zlib linking now works on Windows and the new --with-zlib-include
4502 --with-zlib-lib options to Configure can be used to supply the location
4503 of the headers and library. Gracefully handle case where zlib library
4507 *) Several fixes and enhancements to the OID generation code. The old code
4508 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
4509 handle numbers larger than ULONG_MAX, truncated printing and had a
4510 non standard OBJ_obj2txt() behaviour.
4513 *) Add support for building of engines under engine/ as shared libraries
4514 under VC++ build system.
4517 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
4518 Hopefully, we will not see any false combination of paths any more.
4521 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
4523 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
4524 (part of SSL_OP_ALL). This option used to disable the
4525 countermeasure against man-in-the-middle protocol-version
4526 rollback in the SSL 2.0 server implementation, which is a bad
4527 idea. (CVE-2005-2969)
4529 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
4530 for Information Security, National Institute of Advanced Industrial
4531 Science and Technology [AIST], Japan)]
4533 *) Add two function to clear and return the verify parameter flags.
4536 *) Keep cipherlists sorted in the source instead of sorting them at
4537 runtime, thus removing the need for a lock.
4540 *) Avoid some small subgroup attacks in Diffie-Hellman.
4541 [Nick Mathewson and Ben Laurie]
4543 *) Add functions for well-known primes.
4546 *) Extended Windows CE support.
4547 [Satoshi Nakamura and Andy Polyakov]
4549 *) Initialize SSL_METHOD structures at compile time instead of during
4550 runtime, thus removing the need for a lock.
4553 *) Make PKCS7_decrypt() work even if no certificate is supplied by
4554 attempting to decrypt each encrypted key in turn. Add support to
4558 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
4560 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
4563 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
4566 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
4567 key into the same file any more.
4570 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
4573 *) Add -utf8 command line and config file option to 'ca'.
4574 [Stefan <stf@udoma.org]
4576 *) Removed the macro des_crypt(), as it seems to conflict with some
4577 libraries. Use DES_crypt().
4580 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
4581 involves renaming the source and generated shared-libs for
4582 both. The engines will accept the corrected or legacy ids
4583 ('ncipher' and '4758_cca' respectively) when binding. NB,
4584 this only applies when building 'shared'.
4585 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
4587 *) Add attribute functions to EVP_PKEY structure. Modify
4588 PKCS12_create() to recognize a CSP name attribute and
4589 use it. Make -CSP option work again in pkcs12 utility.
4592 *) Add new functionality to the bn blinding code:
4593 - automatic re-creation of the BN_BLINDING parameters after
4594 a fixed number of uses (currently 32)
4595 - add new function for parameter creation
4596 - introduce flags to control the update behaviour of the
4597 BN_BLINDING parameters
4598 - hide BN_BLINDING structure
4599 Add a second BN_BLINDING slot to the RSA structure to improve
4600 performance when a single RSA object is shared among several
4604 *) Add support for DTLS.
4605 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
4607 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
4608 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
4611 *) Remove buggy and incomplete DH cert support from
4612 ssl/ssl_rsa.c and ssl/s3_both.c
4615 *) Use SHA-1 instead of MD5 as the default digest algorithm for
4616 the apps/openssl applications.
4619 *) Compile clean with "-Wall -Wmissing-prototypes
4620 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
4621 DEBUG_SAFESTACK must also be set.
4624 *) Change ./Configure so that certain algorithms can be disabled by default.
4625 The new counterpiece to "no-xxx" is "enable-xxx".
4627 The patented RC5 and MDC2 algorithms will now be disabled unless
4628 "enable-rc5" and "enable-mdc2", respectively, are specified.
4630 (IDEA remains enabled despite being patented. This is because IDEA
4631 is frequently required for interoperability, and there is no license
4632 fee for non-commercial use. As before, "no-idea" can be used to
4633 avoid this algorithm.)
4637 *) Add processing of proxy certificates (see RFC 3820). This work was
4638 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
4639 EGEE (Enabling Grids for E-science in Europe).
4642 *) RC4 performance overhaul on modern architectures/implementations, such
4643 as Intel P4, IA-64 and AMD64.
4646 *) New utility extract-section.pl. This can be used specify an alternative
4647 section number in a pod file instead of having to treat each file as
4648 a separate case in Makefile. This can be done by adding two lines to the
4651 =for comment openssl_section:XXX
4653 The blank line is mandatory.
4657 *) New arguments -certform, -keyform and -pass for s_client and s_server
4658 to allow alternative format key and certificate files and passphrase
4662 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
4663 update associated structures and add various utility functions.
4665 Add new policy related verify parameters, include policy checking in
4666 standard verify code. Enhance 'smime' application with extra parameters
4667 to support policy checking and print out.
4670 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
4671 Nehemiah processors. These extensions support AES encryption in hardware
4672 as well as RNG (though RNG support is currently disabled).
4673 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
4675 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
4678 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
4679 [Andy Polyakov and a number of other people]
4681 *) Improved PowerPC platform support. Most notably BIGNUM assembler
4682 implementation contributed by IBM.
4683 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
4685 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
4686 exponent rather than 'unsigned long'. There is a corresponding change to
4687 the new 'rsa_keygen' element of the RSA_METHOD structure.
4688 [Jelte Jansen, Geoff Thorpe]
4690 *) Functionality for creating the initial serial number file is now
4691 moved from CA.pl to the 'ca' utility with a new option -create_serial.
4693 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
4694 number file to 1, which is bound to cause problems. To avoid
4695 the problems while respecting compatibility between different 0.9.7
4696 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
4697 CA.pl for serial number initialization. With the new release 0.9.8,
4698 we can fix the problem directly in the 'ca' utility.)
4701 *) Reduced header interdepencies by declaring more opaque objects in
4702 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
4703 give fewer recursive includes, which could break lazy source code - so
4704 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
4705 developers should define this symbol when building and using openssl to
4706 ensure they track the recommended behaviour, interfaces, [etc], but
4707 backwards-compatible behaviour prevails when this isn't defined.
4710 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
4713 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
4714 This will generate a random key of the appropriate length based on the
4715 cipher context. The EVP_CIPHER can provide its own random key generation
4716 routine to support keys of a specific form. This is used in the des and
4717 3des routines to generate a key of the correct parity. Update S/MIME
4718 code to use new functions and hence generate correct parity DES keys.
4719 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
4720 valid (weak or incorrect parity).
4723 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
4724 as looking them up. This is useful when the verified structure may contain
4725 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
4726 present unless the new PKCS7_NO_CRL flag is asserted.
4729 *) Extend ASN1 oid configuration module. It now additionally accepts the
4732 shortName = some long name, 1.2.3.4
4735 *) Reimplemented the BN_CTX implementation. There is now no more static
4736 limitation on the number of variables it can handle nor the depth of the
4737 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
4738 information can now expand as required, and rather than having a single
4739 static array of bignums, BN_CTX now uses a linked-list of such arrays
4740 allowing it to expand on demand whilst maintaining the usefulness of
4741 BN_CTX's "bundling".
4744 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
4745 to allow all RSA operations to function using a single BN_CTX.
4748 *) Preliminary support for certificate policy evaluation and checking. This
4749 is initially intended to pass the tests outlined in "Conformance Testing
4750 of Relying Party Client Certificate Path Processing Logic" v1.07.
4753 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
4754 remained unused and not that useful. A variety of other little bignum
4755 tweaks and fixes have also been made continuing on from the audit (see
4759 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
4760 associated ASN1, EVP and SSL functions and old ASN1 macros.
4763 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
4764 and this should never fail. So the return value from the use of
4765 BN_set_word() (which can fail due to needless expansion) is now deprecated;
4766 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
4769 *) BN_CTX_get() should return zero-valued bignums, providing the same
4770 initialised value as BN_new().
4771 [Geoff Thorpe, suggested by Ulf Möller]
4773 *) Support for inhibitAnyPolicy certificate extension.
4776 *) An audit of the BIGNUM code is underway, for which debugging code is
4777 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
4778 is considered valid when processing BIGNUMs, and causes execution to
4779 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
4780 further steps are taken to deliberately pollute unused data in BIGNUM
4781 structures to try and expose faulty code further on. For now, openssl will
4782 (in its default mode of operation) continue to tolerate the inconsistent
4783 forms that it has tolerated in the past, but authors and packagers should
4784 consider trying openssl and their own applications when compiled with
4785 these debugging symbols defined. It will help highlight potential bugs in
4786 their own code, and will improve the test coverage for OpenSSL itself. At
4787 some point, these tighter rules will become openssl's default to improve
4788 maintainability, though the assert()s and other overheads will remain only
4789 in debugging configurations. See bn.h for more details.
4790 [Geoff Thorpe, Nils Larsch, Ulf Möller]
4792 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
4793 that can only be obtained through BN_CTX_new() (which implicitly
4794 initialises it). The presence of this function only made it possible
4795 to overwrite an existing structure (and cause memory leaks).
4798 *) Because of the callback-based approach for implementing LHASH as a
4799 template type, lh_insert() adds opaque objects to hash-tables and
4800 lh_doall() or lh_doall_arg() are typically used with a destructor callback
4801 to clean up those corresponding objects before destroying the hash table
4802 (and losing the object pointers). So some over-zealous constifications in
4803 LHASH have been relaxed so that lh_insert() does not take (nor store) the
4804 objects as "const" and the lh_doall[_arg] callback wrappers are not
4805 prototyped to have "const" restrictions on the object pointers they are
4806 given (and so aren't required to cast them away any more).
4809 *) The tmdiff.h API was so ugly and minimal that our own timing utility
4810 (speed) prefers to use its own implementation. The two implementations
4811 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
4812 its object type properly exposed (MS_TM) instead of casting to/from "char
4813 *". This may still change yet if someone realises MS_TM and "ms_time_***"
4814 aren't necessarily the greatest nomenclatures - but this is what was used
4815 internally to the implementation so I've used that for now.
4818 *) Ensure that deprecated functions do not get compiled when
4819 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
4820 the self-tests were still using deprecated key-generation functions so
4821 these have been updated also.
4824 *) Reorganise PKCS#7 code to separate the digest location functionality
4825 into PKCS7_find_digest(), digest addition into PKCS7_bio_add_digest().
4826 New function PKCS7_set_digest() to set the digest type for PKCS#7
4827 digestedData type. Add additional code to correctly generate the
4828 digestedData type and add support for this type in PKCS7 initialization
4832 *) New function PKCS7_set0_type_other() this initializes a PKCS7
4833 structure of type "other".
4836 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
4837 sure the loop does correctly stop and breaking ("division by zero")
4838 modulus operations are not performed. The (pre-generated) prime
4839 table crypto/bn/bn_prime.h was already correct, but it could not be
4840 re-generated on some platforms because of the "division by zero"
4841 situation in the script.
4842 [Ralf S. Engelschall]
4844 *) Update support for ECC-based TLS ciphersuites according to
4845 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
4846 SHA-1 now is only used for "small" curves (where the
4847 representation of a field element takes up to 24 bytes); for
4848 larger curves, the field element resulting from ECDH is directly
4849 used as premaster secret.
4850 [Douglas Stebila (Sun Microsystems Laboratories)]
4852 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
4853 curve secp160r1 to the tests.
4854 [Douglas Stebila (Sun Microsystems Laboratories)]
4856 *) Add the possibility to load symbols globally with DSO.
4857 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
4859 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
4860 control of the error stack.
4863 *) Add support for STORE in ENGINE.
4866 *) Add the STORE type. The intention is to provide a common interface
4867 to certificate and key stores, be they simple file-based stores, or
4868 HSM-type store, or LDAP stores, or...
4869 NOTE: The code is currently UNTESTED and isn't really used anywhere.
4872 *) Add a generic structure called OPENSSL_ITEM. This can be used to
4873 pass a list of arguments to any function as well as provide a way
4874 for a function to pass data back to the caller.
4877 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
4878 works like BUF_strdup() but can be used to duplicate a portion of
4879 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
4883 *) Add the function sk_find_ex() which works like sk_find(), but will
4884 return an index to an element even if an exact match couldn't be
4885 found. The index is guaranteed to point at the element where the
4886 searched-for key would be inserted to preserve sorting order.
4889 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
4890 takes an extra flags argument for optional functionality. Currently,
4891 the following flags are defined:
4893 OBJ_BSEARCH_VALUE_ON_NOMATCH
4894 This one gets OBJ_bsearch_ex() to return a pointer to the first
4895 element where the comparing function returns a negative or zero
4898 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
4899 This one gets OBJ_bsearch_ex() to return a pointer to the first
4900 element where the comparing function returns zero. This is useful
4901 if there are more than one element where the comparing function
4905 *) Make it possible to create self-signed certificates with 'openssl ca'
4906 in such a way that the self-signed certificate becomes part of the
4907 CA database and uses the same mechanisms for serial number generation
4908 as all other certificate signing. The new flag '-selfsign' enables
4909 this functionality. Adapt CA.sh and CA.pl.in.
4912 *) Add functionality to check the public key of a certificate request
4913 against a given private. This is useful to check that a certificate
4914 request can be signed by that key (self-signing).
4917 *) Make it possible to have multiple active certificates with the same
4918 subject in the CA index file. This is done only if the keyword
4919 'unique_subject' is set to 'no' in the main CA section (default
4920 if 'CA_default') of the configuration file. The value is saved
4921 with the database itself in a separate index attribute file,
4922 named like the index file with '.attr' appended to the name.
4925 *) Generate muti valued AVAs using '+' notation in config files for
4929 *) Support for nameConstraints certificate extension.
4932 *) Support for policyConstraints certificate extension.
4935 *) Support for policyMappings certificate extension.
4938 *) Make sure the default DSA_METHOD implementation only uses its
4939 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
4940 and change its own handlers to be NULL so as to remove unnecessary
4941 indirection. This lets alternative implementations fallback to the
4942 default implementation more easily.
4945 *) Support for directoryName in GeneralName related extensions
4949 *) Make it possible to link applications using Makefile.shared.
4950 Make that possible even when linking against static libraries!
4953 *) Support for single pass processing for S/MIME signing. This now
4954 means that S/MIME signing can be done from a pipe, in addition
4955 cleartext signing (multipart/signed type) is effectively streaming
4956 and the signed data does not need to be all held in memory.
4958 This is done with a new flag PKCS7_STREAM. When this flag is set
4959 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
4960 is done after the data is output (and digests calculated) in
4961 SMIME_write_PKCS7().
4964 *) Add full support for -rpath/-R, both in shared libraries and
4965 applications, at least on the platforms where it's known how
4969 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
4970 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
4971 will now compute a table of multiples of the generator that
4972 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
4973 faster (notably in the case of a single point multiplication,
4974 scalar * generator).
4975 [Nils Larsch, Bodo Moeller]
4977 *) IPv6 support for certificate extensions. The various extensions
4978 which use the IP:a.b.c.d can now take IPv6 addresses using the
4979 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
4983 *) Added an ENGINE that implements RSA by performing private key
4984 exponentiations with the GMP library. The conversions to and from
4985 GMP's mpz_t format aren't optimised nor are any montgomery forms
4986 cached, and on x86 it appears OpenSSL's own performance has caught up.
4987 However there are likely to be other architectures where GMP could
4988 provide a boost. This ENGINE is not built in by default, but it can be
4989 specified at Configure time and should be accompanied by the necessary
4990 linker additions, eg;
4991 ./config -DOPENSSL_USE_GMP -lgmp
4994 *) "openssl engine" will not display ENGINE/DSO load failure errors when
4995 testing availability of engines with "-t" - the old behaviour is
4996 produced by increasing the feature's verbosity with "-tt".
4999 *) ECDSA routines: under certain error conditions uninitialized BN objects
5000 could be freed. Solution: make sure initialization is performed early
5001 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
5005 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
5006 and DH_METHOD (eg. by ENGINE implementations) to override the normal
5007 software implementations. For DSA and DH, parameter generation can
5008 also be overriden by providing the appropriate method callbacks.
5011 *) Change the "progress" mechanism used in key-generation and
5012 primality testing to functions that take a new BN_GENCB pointer in
5013 place of callback/argument pairs. The new API functions have "_ex"
5014 postfixes and the older functions are reimplemented as wrappers for
5015 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
5016 declarations of the old functions to help (graceful) attempts to
5017 migrate to the new functions. Also, the new key-generation API
5018 functions operate on a caller-supplied key-structure and return
5019 success/failure rather than returning a key or NULL - this is to
5020 help make "keygen" another member function of RSA_METHOD etc.
5022 Example for using the new callback interface:
5024 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
5028 BN_GENCB_set(&my_cb, my_callback, my_arg);
5030 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
5031 /* For the meaning of a, b in calls to my_callback(), see the
5032 * documentation of the function that calls the callback.
5033 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
5034 * my_callback should return 1 if it wants BN_is_prime_ex()
5035 * to continue, or 0 to stop.
5040 *) Change the ZLIB compression method to be stateful, and make it
5041 available to TLS with the number defined in
5042 draft-ietf-tls-compression-04.txt.
5045 *) Add the ASN.1 structures and functions for CertificatePair, which
5046 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
5048 CertificatePair ::= SEQUENCE {
5049 forward [0] Certificate OPTIONAL,
5050 reverse [1] Certificate OPTIONAL,
5051 -- at least one of the pair shall be present -- }
5053 Also implement the PEM functions to read and write certificate
5054 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
5056 This needed to be defined, mostly for the sake of the LDAP
5057 attribute crossCertificatePair, but may prove useful elsewhere as
5061 *) Make it possible to inhibit symlinking of shared libraries in
5062 Makefile.shared, for Cygwin's sake.
5065 *) Extend the BIGNUM API by creating a function
5066 void BN_set_negative(BIGNUM *a, int neg);
5067 and a macro that behave like
5068 int BN_is_negative(const BIGNUM *a);
5070 to avoid the need to access 'a->neg' directly in applications.
5073 *) Implement fast modular reduction for pseudo-Mersenne primes
5074 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
5075 EC_GROUP_new_curve_GFp() will now automatically use this
5077 [Nils Larsch <nla@trustcenter.de>]
5079 *) Add new lock type (CRYPTO_LOCK_BN).
5082 *) Change the ENGINE framework to automatically load engines
5083 dynamically from specific directories unless they could be
5084 found to already be built in or loaded. Move all the
5085 current engines except for the cryptodev one to a new
5087 The engines in engines/ are built as shared libraries if
5088 the "shared" options was given to ./Configure or ./config.
5089 Otherwise, they are inserted in libcrypto.a.
5090 /usr/local/ssl/engines is the default directory for dynamic
5091 engines, but that can be overriden at configure time through
5092 the usual use of --prefix and/or --openssldir, and at run
5093 time with the environment variable OPENSSL_ENGINES.
5094 [Geoff Thorpe and Richard Levitte]
5096 *) Add Makefile.shared, a helper makefile to build shared
5097 libraries. Adapt Makefile.org.
5100 *) Add version info to Win32 DLLs.
5101 [Peter 'Luna' Runestig" <peter@runestig.com>]
5103 *) Add new 'medium level' PKCS#12 API. Certificates and keys
5104 can be added using this API to created arbitrary PKCS#12
5105 files while avoiding the low level API.
5107 New options to PKCS12_create(), key or cert can be NULL and
5108 will then be omitted from the output file. The encryption
5109 algorithm NIDs can be set to -1 for no encryption, the mac
5110 iteration count can be set to 0 to omit the mac.
5112 Enhance pkcs12 utility by making the -nokeys and -nocerts
5113 options work when creating a PKCS#12 file. New option -nomac
5114 to omit the mac, NONE can be set for an encryption algorithm.
5115 New code is modified to use the enhanced PKCS12_create()
5116 instead of the low level API.
5119 *) Extend ASN1 encoder to support indefinite length constructed
5120 encoding. This can output sequences tags and octet strings in
5121 this form. Modify pk7_asn1.c to support indefinite length
5122 encoding. This is experimental and needs additional code to
5123 be useful, such as an ASN1 bio and some enhanced streaming
5126 Extend template encode functionality so that tagging is passed
5127 down to the template encoder.
5130 *) Let 'openssl req' fail if an argument to '-newkey' is not
5131 recognized instead of using RSA as a default.
5134 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
5135 As these are not official, they are not included in "ALL";
5136 the "ECCdraft" ciphersuite group alias can be used to select them.
5137 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
5139 *) Add ECDH engine support.
5140 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
5142 *) Add ECDH in new directory crypto/ecdh/.
5143 [Douglas Stebila (Sun Microsystems Laboratories)]
5145 *) Let BN_rand_range() abort with an error after 100 iterations
5146 without success (which indicates a broken PRNG).
5149 *) Change BN_mod_sqrt() so that it verifies that the input value
5150 is really the square of the return value. (Previously,
5151 BN_mod_sqrt would show GIGO behaviour.)
5154 *) Add named elliptic curves over binary fields from X9.62, SECG,
5155 and WAP/WTLS; add OIDs that were still missing.
5157 [Sheueling Chang Shantz and Douglas Stebila
5158 (Sun Microsystems Laboratories)]
5160 *) Extend the EC library for elliptic curves over binary fields
5161 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
5164 EC_GF2m_simple_method
5168 EC_GROUP_new_curve_GF2m
5169 EC_GROUP_set_curve_GF2m
5170 EC_GROUP_get_curve_GF2m
5171 EC_POINT_set_affine_coordinates_GF2m
5172 EC_POINT_get_affine_coordinates_GF2m
5173 EC_POINT_set_compressed_coordinates_GF2m
5175 Point compression for binary fields is disabled by default for
5176 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
5179 As binary polynomials are represented as BIGNUMs, various members
5180 of the EC_GROUP and EC_POINT data structures can be shared
5181 between the implementations for prime fields and binary fields;
5182 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
5183 are essentially identical to their ..._GFp counterparts.
5184 (For simplicity, the '..._GFp' prefix has been dropped from
5185 various internal method names.)
5187 An internal 'field_div' method (similar to 'field_mul' and
5188 'field_sqr') has been added; this is used only for binary fields.
5190 [Sheueling Chang Shantz and Douglas Stebila
5191 (Sun Microsystems Laboratories)]
5193 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
5194 through methods ('mul', 'precompute_mult').
5196 The generic implementations (now internally called 'ec_wNAF_mul'
5197 and 'ec_wNAF_precomputed_mult') remain the default if these
5198 methods are undefined.
5200 [Sheueling Chang Shantz and Douglas Stebila
5201 (Sun Microsystems Laboratories)]
5203 *) New function EC_GROUP_get_degree, which is defined through
5204 EC_METHOD. For curves over prime fields, this returns the bit
5205 length of the modulus.
5207 [Sheueling Chang Shantz and Douglas Stebila
5208 (Sun Microsystems Laboratories)]
5210 *) New functions EC_GROUP_dup, EC_POINT_dup.
5211 (These simply call ..._new and ..._copy).
5213 [Sheueling Chang Shantz and Douglas Stebila
5214 (Sun Microsystems Laboratories)]
5216 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
5217 Polynomials are represented as BIGNUMs (where the sign bit is not
5218 used) in the following functions [macros]:
5221 BN_GF2m_sub [= BN_GF2m_add]
5222 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
5223 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
5224 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
5226 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
5227 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
5228 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
5229 BN_GF2m_cmp [= BN_ucmp]
5231 (Note that only the 'mod' functions are actually for fields GF(2^m).
5232 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
5234 For some functions, an the irreducible polynomial defining a
5235 field can be given as an 'unsigned int[]' with strictly
5236 decreasing elements giving the indices of those bits that are set;
5237 i.e., p[] represents the polynomial
5238 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
5240 p[0] > p[1] > ... > p[k] = 0.
5241 This applies to the following functions:
5246 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
5247 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
5249 BN_GF2m_mod_sqrt_arr
5250 BN_GF2m_mod_solve_quad_arr
5254 Conversion can be performed by the following functions:
5259 bntest.c has additional tests for binary polynomial arithmetic.
5261 Two implementations for BN_GF2m_mod_div() are available.
5262 The default algorithm simply uses BN_GF2m_mod_inv() and
5263 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
5264 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
5265 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
5267 [Sheueling Chang Shantz and Douglas Stebila
5268 (Sun Microsystems Laboratories)]
5270 *) Add new error code 'ERR_R_DISABLED' that can be used when some
5271 functionality is disabled at compile-time.
5272 [Douglas Stebila <douglas.stebila@sun.com>]
5274 *) Change default behaviour of 'openssl asn1parse' so that more
5275 information is visible when viewing, e.g., a certificate:
5277 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
5278 mode the content of non-printable OCTET STRINGs is output in a
5279 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
5280 avoid the appearance of a printable string.
5281 [Nils Larsch <nla@trustcenter.de>]
5283 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
5285 EC_GROUP_set_asn1_flag()
5286 EC_GROUP_get_asn1_flag()
5287 EC_GROUP_set_point_conversion_form()
5288 EC_GROUP_get_point_conversion_form()
5289 These control ASN1 encoding details:
5290 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
5291 has been set to OPENSSL_EC_NAMED_CURVE.
5292 - Points are encoded in uncompressed form by default; options for
5293 asn1_for are as for point2oct, namely
5294 POINT_CONVERSION_COMPRESSED
5295 POINT_CONVERSION_UNCOMPRESSED
5296 POINT_CONVERSION_HYBRID
5298 Also add 'seed' and 'seed_len' members to EC_GROUP with access
5301 EC_GROUP_get0_seed()
5302 EC_GROUP_get_seed_len()
5303 This is used only for ASN1 purposes (so far).
5304 [Nils Larsch <nla@trustcenter.de>]
5306 *) Add 'field_type' member to EC_METHOD, which holds the NID
5307 of the appropriate field type OID. The new function
5308 EC_METHOD_get_field_type() returns this value.
5309 [Nils Larsch <nla@trustcenter.de>]
5314 EC_POINT_point2hex()
5315 EC_POINT_hex2point()
5316 providing useful interfaces to EC_POINT_point2oct() and
5317 EC_POINT_oct2point().
5318 [Nils Larsch <nla@trustcenter.de>]
5320 *) Change internals of the EC library so that the functions
5321 EC_GROUP_set_generator()
5322 EC_GROUP_get_generator()
5323 EC_GROUP_get_order()
5324 EC_GROUP_get_cofactor()
5325 are implemented directly in crypto/ec/ec_lib.c and not dispatched
5326 to methods, which would lead to unnecessary code duplication when
5327 adding different types of curves.
5328 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
5330 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
5331 arithmetic, and such that modified wNAFs are generated
5332 (which avoid length expansion in many cases).
5335 *) Add a function EC_GROUP_check_discriminant() (defined via
5336 EC_METHOD) that verifies that the curve discriminant is non-zero.
5338 Add a function EC_GROUP_check() that makes some sanity tests
5339 on a EC_GROUP, its generator and order. This includes
5340 EC_GROUP_check_discriminant().
5341 [Nils Larsch <nla@trustcenter.de>]
5343 *) Add ECDSA in new directory crypto/ecdsa/.
5345 Add applications 'openssl ecparam' and 'openssl ecdsa'
5346 (these are based on 'openssl dsaparam' and 'openssl dsa').
5348 ECDSA support is also included in various other files across the
5349 library. Most notably,
5350 - 'openssl req' now has a '-newkey ecdsa:file' option;
5351 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
5352 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
5353 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
5354 them suitable for ECDSA where domain parameters must be
5355 extracted before the specific public key;
5356 - ECDSA engine support has been added.
5357 [Nils Larsch <nla@trustcenter.de>]
5359 *) Include some named elliptic curves, and add OIDs from X9.62,
5360 SECG, and WAP/WTLS. Each curve can be obtained from the new
5362 EC_GROUP_new_by_curve_name(),
5363 and the list of available named curves can be obtained with
5364 EC_get_builtin_curves().
5365 Also add a 'curve_name' member to EC_GROUP objects, which can be
5367 EC_GROUP_set_curve_name()
5368 EC_GROUP_get_curve_name()
5369 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
5371 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
5372 was actually never needed) and in BN_mul(). The removal in BN_mul()
5373 required a small change in bn_mul_part_recursive() and the addition
5374 of the functions bn_cmp_part_words(), bn_sub_part_words() and
5375 bn_add_part_words(), which do the same thing as bn_cmp_words(),
5376 bn_sub_words() and bn_add_words() except they take arrays with
5380 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
5382 *) Cleanse PEM buffers before freeing them since they may contain
5384 [Benjamin Bennett <ben@psc.edu>]
5386 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
5387 a ciphersuite string such as "DEFAULT:RSA" cannot enable
5388 authentication-only ciphersuites.
5391 *) Since AES128 and AES256 share a single mask bit in the logic of
5392 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
5393 kludge to work properly if AES128 is available and AES256 isn't.
5396 *) Expand security boundary to match 1.1.1 module.
5399 *) Remove redundant features: hash file source, editing of test vectors
5400 modify fipsld to use external fips_premain.c signature.
5403 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
5404 run algorithm test programs.
5407 *) Make algorithm test programs more tolerant of whitespace.
5410 *) Have SSL/TLS server implementation tolerate "mismatched" record
5411 protocol version while receiving ClientHello even if the
5412 ClientHello is fragmented. (The server can't insist on the
5413 particular protocol version it has chosen before the ServerHello
5414 message has informed the client about his choice.)
5417 *) Load error codes if they are not already present instead of using a
5418 static variable. This allows them to be cleanly unloaded and reloaded.
5421 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
5423 *) Introduce limits to prevent malicious keys being able to
5424 cause a denial of service. (CVE-2006-2940)
5425 [Steve Henson, Bodo Moeller]
5427 *) Fix ASN.1 parsing of certain invalid structures that can result
5428 in a denial of service. (CVE-2006-2937) [Steve Henson]
5430 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
5431 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
5433 *) Fix SSL client code which could crash if connecting to a
5434 malicious SSLv2 server. (CVE-2006-4343)
5435 [Tavis Ormandy and Will Drewry, Google Security Team]
5437 *) Change ciphersuite string processing so that an explicit
5438 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
5439 will no longer include "AES128-SHA"), and any other similar
5440 ciphersuite (same bitmap) from *other* protocol versions (so that
5441 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
5442 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
5443 changes from 0.9.8b and 0.9.8d.
5446 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
5448 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
5449 (CVE-2006-4339) [Ben Laurie and Google Security Team]
5451 *) Change the Unix randomness entropy gathering to use poll() when
5452 possible instead of select(), since the latter has some
5453 undesirable limitations.
5454 [Darryl Miles via Richard Levitte and Bodo Moeller]
5456 *) Disable rogue ciphersuites:
5458 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
5459 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
5460 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
5462 The latter two were purportedly from
5463 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
5466 Also deactive the remaining ciphersuites from
5467 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
5468 unofficial, and the ID has long expired.
5471 *) Fix RSA blinding Heisenbug (problems sometimes occurred on
5472 dual-core machines) and other potential thread-safety issues.
5475 Changes between 0.9.7i and 0.9.7j [04 May 2006]
5477 *) Adapt fipsld and the build system to link against the validated FIPS
5478 module in FIPS mode.
5481 *) Fixes for VC++ 2005 build under Windows.
5484 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
5485 from a Windows bash shell such as MSYS. It is autodetected from the
5486 "config" script when run from a VC++ environment. Modify standard VC++
5487 build to use fipscanister.o from the GNU make build.
5490 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
5492 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
5493 The value now differs depending on if you build for FIPS or not.
5494 BEWARE! A program linked with a shared FIPSed libcrypto can't be
5495 safely run with a non-FIPSed libcrypto, as it may crash because of
5496 the difference induced by this change.
5499 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
5501 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
5502 (part of SSL_OP_ALL). This option used to disable the
5503 countermeasure against man-in-the-middle protocol-version
5504 rollback in the SSL 2.0 server implementation, which is a bad
5505 idea. (CVE-2005-2969)
5507 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
5508 for Information Security, National Institute of Advanced Industrial
5509 Science and Technology [AIST], Japan)]
5511 *) Minimal support for X9.31 signatures and PSS padding modes. This is
5512 mainly for FIPS compliance and not fully integrated at this stage.
5515 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
5516 the exponentiation using a fixed-length exponent. (Otherwise,
5517 the information leaked through timing could expose the secret key
5518 after many signatures; cf. Bleichenbacher's attack on DSA with
5522 *) Make a new fixed-window mod_exp implementation the default for
5523 RSA, DSA, and DH private-key operations so that the sequence of
5524 squares and multiplies and the memory access pattern are
5525 independent of the particular secret key. This will mitigate
5526 cache-timing and potential related attacks.
5528 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
5529 and this is automatically used by BN_mod_exp_mont() if the new flag
5530 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
5531 will use this BN flag for private exponents unless the flag
5532 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
5533 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
5535 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
5537 *) Change the client implementation for SSLv23_method() and
5538 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
5539 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
5540 (Previously, the SSL 2.0 backwards compatible Client Hello
5541 message format would be used even with SSL_OP_NO_SSLv2.)
5544 *) Add support for smime-type MIME parameter in S/MIME messages which some
5548 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
5549 a threadsafe manner. Modify rsa code to use new function and add calls
5550 to dsa and dh code (which had race conditions before).
5553 *) Include the fixed error library code in the C error file definitions
5554 instead of fixing them up at runtime. This keeps the error code
5555 structures constant.
5558 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
5560 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
5563 *) Fixes for newer kerberos headers. NB: the casts are needed because
5564 the 'length' field is signed on one version and unsigned on another
5565 with no (?) obvious way to tell the difference, without these VC++
5566 complains. Also the "definition" of FAR (blank) is no longer included
5567 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
5568 some needed definitions.
5571 *) Undo Cygwin change.
5574 *) Added support for proxy certificates according to RFC 3820.
5575 Because they may be a security thread to unaware applications,
5576 they must be explicitly allowed in run-time. See
5577 docs/HOWTO/proxy_certificates.txt for further information.
5580 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
5582 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
5583 server and client random values. Previously
5584 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
5585 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
5587 This change has negligible security impact because:
5589 1. Server and client random values still have 24 bytes of pseudo random
5592 2. Server and client random values are sent in the clear in the initial
5595 3. The master secret is derived using the premaster secret (48 bytes in
5596 size for static RSA ciphersuites) as well as client server and random
5599 The OpenSSL team would like to thank the UK NISCC for bringing this issue
5602 [Stephen Henson, reported by UK NISCC]
5604 *) Use Windows randomness collection on Cygwin.
5607 *) Fix hang in EGD/PRNGD query when communication socket is closed
5608 prematurely by EGD/PRNGD.
5609 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
5611 *) Prompt for pass phrases when appropriate for PKCS12 input format.
5614 *) Back-port of selected performance improvements from development
5615 branch, as well as improved support for PowerPC platforms.
5618 *) Add lots of checks for memory allocation failure, error codes to indicate
5619 failure and freeing up memory if a failure occurs.
5620 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
5622 *) Add new -passin argument to dgst.
5625 *) Perform some character comparisons of different types in X509_NAME_cmp:
5626 this is needed for some certificates that reencode DNs into UTF8Strings
5627 (in violation of RFC3280) and can't or wont issue name rollover
5631 *) Make an explicit check during certificate validation to see that
5632 the CA setting in each certificate on the chain is correct. As a
5633 side effect always do the following basic checks on extensions,
5634 not just when there's an associated purpose to the check:
5636 - if there is an unhandled critical extension (unless the user
5637 has chosen to ignore this fault)
5638 - if the path length has been exceeded (if one is set at all)
5639 - that certain extensions fit the associated purpose (if one has
5643 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
5645 *) Avoid a race condition when CRLs are checked in a multi threaded
5646 environment. This would happen due to the reordering of the revoked
5647 entries during signature checking and serial number lookup. Now the
5648 encoding is cached and the serial number sort performed under a lock.
5649 Add new STACK function sk_is_sorted().
5652 *) Add Delta CRL to the extension code.
5655 *) Various fixes to s3_pkt.c so alerts are sent properly.
5656 [David Holmes <d.holmes@f5.com>]
5658 *) Reduce the chances of duplicate issuer name and serial numbers (in
5659 violation of RFC3280) using the OpenSSL certificate creation utilities.
5660 This is done by creating a random 64 bit value for the initial serial
5661 number when a serial number file is created or when a self signed
5662 certificate is created using 'openssl req -x509'. The initial serial
5663 number file is created using 'openssl x509 -next_serial' in CA.pl
5664 rather than being initialized to 1.
5667 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
5669 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
5670 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
5671 [Joe Orton, Steve Henson]
5673 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
5675 [Joe Orton, Steve Henson]
5677 *) Make it possible to have multiple active certificates with the same
5678 subject in the CA index file. This is done only if the keyword
5679 'unique_subject' is set to 'no' in the main CA section (default
5680 if 'CA_default') of the configuration file. The value is saved
5681 with the database itself in a separate index attribute file,
5682 named like the index file with '.attr' appended to the name.
5685 *) X509 verify fixes. Disable broken certificate workarounds when
5686 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
5687 keyUsage extension present. Don't accept CRLs with unhandled critical
5688 extensions: since verify currently doesn't process CRL extensions this
5689 rejects a CRL with *any* critical extensions. Add new verify error codes
5693 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
5694 A clarification of RFC2560 will require the use of OCTET STRINGs and
5695 some implementations cannot handle the current raw format. Since OpenSSL
5696 copies and compares OCSP nonces as opaque blobs without any attempt at
5697 parsing them this should not create any compatibility issues.
5700 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
5701 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
5702 this HMAC (and other) operations are several times slower than OpenSSL
5706 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
5707 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
5709 *) Use the correct content when signing type "other".
5712 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
5714 *) Fix various bugs revealed by running the NISCC test suite:
5716 Stop out of bounds reads in the ASN1 code when presented with
5717 invalid tags (CVE-2003-0543 and CVE-2003-0544).
5719 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
5721 If verify callback ignores invalid public key errors don't try to check
5722 certificate signature with the NULL public key.
5726 *) New -ignore_err option in ocsp application to stop the server
5727 exiting on the first error in a request.
5730 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
5731 if the server requested one: as stated in TLS 1.0 and SSL 3.0
5735 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
5736 extra data after the compression methods not only for TLS 1.0
5737 but also for SSL 3.0 (as required by the specification).
5738 [Bodo Moeller; problem pointed out by Matthias Loepfe]
5740 *) Change X509_certificate_type() to mark the key as exported/exportable
5741 when it's 512 *bits* long, not 512 bytes.
5744 *) Change AES_cbc_encrypt() so it outputs exact multiple of
5745 blocks during encryption.
5748 *) Various fixes to base64 BIO and non blocking I/O. On write
5749 flushes were not handled properly if the BIO retried. On read
5750 data was not being buffered properly and had various logic bugs.
5751 This also affects blocking I/O when the data being decoded is a
5755 *) Various S/MIME bugfixes and compatibility changes:
5756 output correct application/pkcs7 MIME type if
5757 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
5758 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
5759 of files as .eml work). Correctly handle very long lines in MIME
5763 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
5765 *) Countermeasure against the Klima-Pokorny-Rosa extension of
5766 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
5767 a protocol version number mismatch like a decryption error
5768 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
5771 *) Turn on RSA blinding by default in the default implementation
5772 to avoid a timing attack. Applications that don't want it can call
5773 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
5774 They would be ill-advised to do so in most cases.
5775 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
5777 *) Change RSA blinding code so that it works when the PRNG is not
5778 seeded (in this case, the secret RSA exponent is abused as
5779 an unpredictable seed -- if it is not unpredictable, there
5780 is no point in blinding anyway). Make RSA blinding thread-safe
5781 by remembering the creator's thread ID in rsa->blinding and
5782 having all other threads use local one-time blinding factors
5783 (this requires more computation than sharing rsa->blinding, but
5784 avoids excessive locking; and if an RSA object is not shared
5785 between threads, blinding will still be very fast).
5788 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
5789 ENGINE as defaults for all supported algorithms irrespective of
5790 the 'flags' parameter. 'flags' is now honoured, so applications
5791 should make sure they are passing it correctly.
5794 *) Target "mingw" now allows native Windows code to be generated in
5795 the Cygwin environment as well as with the MinGW compiler.
5798 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
5800 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
5801 via timing by performing a MAC computation even if incorrect
5802 block cipher padding has been found. This is a countermeasure
5803 against active attacks where the attacker has to distinguish
5804 between bad padding and a MAC verification error. (CVE-2003-0078)
5806 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
5807 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
5808 Martin Vuagnoux (EPFL, Ilion)]
5810 *) Make the no-err option work as intended. The intention with no-err
5811 is not to have the whole error stack handling routines removed from
5812 libcrypto, it's only intended to remove all the function name and
5813 reason texts, thereby removing some of the footprint that may not
5814 be interesting if those errors aren't displayed anyway.
5816 NOTE: it's still possible for any application or module to have it's
5817 own set of error texts inserted. The routines are there, just not
5818 used by default when no-err is given.
5821 *) Add support for FreeBSD on IA64.
5822 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
5824 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
5825 Kerberos function mit_des_cbc_cksum(). Before this change,
5826 the value returned by DES_cbc_cksum() was like the one from
5827 mit_des_cbc_cksum(), except the bytes were swapped.
5828 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
5830 *) Allow an application to disable the automatic SSL chain building.
5831 Before this a rather primitive chain build was always performed in
5832 ssl3_output_cert_chain(): an application had no way to send the
5833 correct chain if the automatic operation produced an incorrect result.
5835 Now the chain builder is disabled if either:
5837 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
5839 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
5841 The reasoning behind this is that an application would not want the
5842 auto chain building to take place if extra chain certificates are
5843 present and it might also want a means of sending no additional
5844 certificates (for example the chain has two certificates and the
5848 *) Add the possibility to build without the ENGINE framework.
5849 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
5851 *) Under Win32 gmtime() can return NULL: check return value in
5852 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
5855 *) DSA routines: under certain error conditions uninitialized BN objects
5856 could be freed. Solution: make sure initialization is performed early
5857 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
5858 Nils Larsch <nla@trustcenter.de> via PR#459)
5861 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
5862 checked on reconnect on the client side, therefore session resumption
5863 could still fail with a "ssl session id is different" error. This
5864 behaviour is masked when SSL_OP_ALL is used due to
5865 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
5866 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
5867 followup to PR #377.
5870 *) IA-32 assembler support enhancements: unified ELF targets, support
5871 for SCO/Caldera platforms, fix for Cygwin shared build.
5874 *) Add support for FreeBSD on sparc64. As a consequence, support for
5875 FreeBSD on non-x86 processors is separate from x86 processors on
5876 the config script, much like the NetBSD support.
5877 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
5879 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
5881 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
5884 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
5885 code (06) was taken as the first octet of the session ID and the last
5886 octet was ignored consequently. As a result SSLv2 client side session
5887 caching could not have worked due to the session ID mismatch between
5889 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
5893 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
5894 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
5898 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
5899 seems that in spite of existing for more than a year, many application
5900 author have done nothing to provide the necessary callbacks, which
5901 means that this particular engine will not work properly anywhere.
5902 This is a very unfortunate situation which forces us, in the name
5903 of usability, to give the hw_ncipher.c a static lock, which is part
5905 NOTE: This is for the 0.9.7 series ONLY. This hack will never
5906 appear in 0.9.8 or later. We EXPECT application authors to have
5907 dealt properly with this when 0.9.8 is released (unless we actually
5908 make such changes in the libcrypto locking code that changes will
5909 have to be made anyway).
5912 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
5913 octets have been read, EOF or an error occurs. Without this change
5914 some truncated ASN1 structures will not produce an error.
5917 *) Disable Heimdal support, since it hasn't been fully implemented.
5918 Still give the possibility to force the use of Heimdal, but with
5919 warnings and a request that patches get sent to openssl-dev.
5922 *) Add the VC-CE target, introduce the WINCE sysname, and add
5923 INSTALL.WCE and appropriate conditionals to make it build.
5924 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
5926 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
5927 cygssl-x.y.z.dll, where x, y and z are the major, minor and
5928 edit numbers of the version.
5929 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
5931 *) Introduce safe string copy and catenation functions
5932 (BUF_strlcpy() and BUF_strlcat()).
5933 [Ben Laurie (CHATS) and Richard Levitte]
5935 *) Avoid using fixed-size buffers for one-line DNs.
5936 [Ben Laurie (CHATS)]
5938 *) Add BUF_MEM_grow_clean() to avoid information leakage when
5939 resizing buffers containing secrets, and use where appropriate.
5940 [Ben Laurie (CHATS)]
5942 *) Avoid using fixed size buffers for configuration file location.
5943 [Ben Laurie (CHATS)]
5945 *) Avoid filename truncation for various CA files.
5946 [Ben Laurie (CHATS)]
5948 *) Use sizeof in preference to magic numbers.
5949 [Ben Laurie (CHATS)]
5951 *) Avoid filename truncation in cert requests.
5952 [Ben Laurie (CHATS)]
5954 *) Add assertions to check for (supposedly impossible) buffer
5956 [Ben Laurie (CHATS)]
5958 *) Don't cache truncated DNS entries in the local cache (this could
5959 potentially lead to a spoofing attack).
5960 [Ben Laurie (CHATS)]
5962 *) Fix various buffers to be large enough for hex/decimal
5963 representations in a platform independent manner.
5964 [Ben Laurie (CHATS)]
5966 *) Add CRYPTO_realloc_clean() to avoid information leakage when
5967 resizing buffers containing secrets, and use where appropriate.
5968 [Ben Laurie (CHATS)]
5970 *) Add BIO_indent() to avoid much slightly worrying code to do
5972 [Ben Laurie (CHATS)]
5974 *) Convert sprintf()/BIO_puts() to BIO_printf().
5975 [Ben Laurie (CHATS)]
5977 *) buffer_gets() could terminate with the buffer only half
5979 [Ben Laurie (CHATS)]
5981 *) Add assertions to prevent user-supplied crypto functions from
5982 overflowing internal buffers by having large block sizes, etc.
5983 [Ben Laurie (CHATS)]
5985 *) New OPENSSL_assert() macro (similar to assert(), but enabled
5987 [Ben Laurie (CHATS)]
5989 *) Eliminate unused copy of key in RC4.
5990 [Ben Laurie (CHATS)]
5992 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
5993 [Ben Laurie (CHATS)]
5995 *) Fix off-by-one error in EGD path.
5996 [Ben Laurie (CHATS)]
5998 *) If RANDFILE path is too long, ignore instead of truncating.
5999 [Ben Laurie (CHATS)]
6001 *) Eliminate unused and incorrectly sized X.509 structure
6003 [Ben Laurie (CHATS)]
6005 *) Eliminate unused and dangerous function knumber().
6006 [Ben Laurie (CHATS)]
6008 *) Eliminate unused and dangerous structure, KSSL_ERR.
6009 [Ben Laurie (CHATS)]
6011 *) Protect against overlong session ID context length in an encoded
6012 session object. Since these are local, this does not appear to be
6014 [Ben Laurie (CHATS)]
6016 *) Change from security patch (see 0.9.6e below) that did not affect
6017 the 0.9.6 release series:
6019 Remote buffer overflow in SSL3 protocol - an attacker could
6020 supply an oversized master key in Kerberos-enabled versions.
6022 [Ben Laurie (CHATS)]
6024 *) Change the SSL kerb5 codes to match RFC 2712.
6027 *) Make -nameopt work fully for req and add -reqopt switch.
6028 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
6030 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
6031 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
6033 *) Make sure tests can be performed even if the corresponding algorithms
6034 have been removed entirely. This was also the last step to make
6035 OpenSSL compilable with DJGPP under all reasonable conditions.
6036 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
6038 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
6039 to allow version independent disabling of normally unselected ciphers,
6040 which may be activated as a side-effect of selecting a single cipher.
6042 (E.g., cipher list string "RSA" enables ciphersuites that are left
6043 out of "ALL" because they do not provide symmetric encryption.
6044 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
6045 [Lutz Jaenicke, Bodo Moeller]
6047 *) Add appropriate support for separate platform-dependent build
6048 directories. The recommended way to make a platform-dependent
6049 build directory is the following (tested on Linux), maybe with
6052 # Place yourself outside of the OpenSSL source tree. In
6053 # this example, the environment variable OPENSSL_SOURCE
6054 # is assumed to contain the absolute OpenSSL source directory.
6055 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
6056 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
6057 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
6058 mkdir -p `dirname $F`
6059 ln -s $OPENSSL_SOURCE/$F $F
6062 To be absolutely sure not to disturb the source tree, a "make clean"
6063 is a good thing. If it isn't successful, don't worry about it,
6064 it probably means the source directory is very clean.
6067 *) Make sure any ENGINE control commands make local copies of string
6068 pointers passed to them whenever necessary. Otherwise it is possible
6069 the caller may have overwritten (or deallocated) the original string
6070 data when a later ENGINE operation tries to use the stored values.
6071 [Götz Babin-Ebell <babinebell@trustcenter.de>]
6073 *) Improve diagnostics in file reading and command-line digests.
6074 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
6076 *) Add AES modes CFB and OFB to the object database. Correct an
6077 error in AES-CFB decryption.
6080 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
6081 allows existing EVP_CIPHER_CTX structures to be reused after
6082 calling EVP_*Final(). This behaviour is used by encryption
6083 BIOs and some applications. This has the side effect that
6084 applications must explicitly clean up cipher contexts with
6085 EVP_CIPHER_CTX_cleanup() or they will leak memory.
6088 *) Check the values of dna and dnb in bn_mul_recursive before calling
6089 bn_mul_comba (a non zero value means the a or b arrays do not contain
6090 n2 elements) and fallback to bn_mul_normal if either is not zero.
6093 *) Fix escaping of non-ASCII characters when using the -subj option
6094 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
6097 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
6098 form for "surname", serialNumber has no short form.
6099 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
6100 therefore remove "mail" short name for "internet 7".
6101 The OID for unique identifiers in X509 certificates is
6102 x500UniqueIdentifier, not uniqueIdentifier.
6103 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
6106 *) Add an "init" command to the ENGINE config module and auto initialize
6107 ENGINEs. Without any "init" command the ENGINE will be initialized
6108 after all ctrl commands have been executed on it. If init=1 the
6109 ENGINE is initailized at that point (ctrls before that point are run
6110 on the uninitialized ENGINE and after on the initialized one). If
6111 init=0 then the ENGINE will not be iniatialized at all.
6114 *) Fix the 'app_verify_callback' interface so that the user-defined
6115 argument is actually passed to the callback: In the
6116 SSL_CTX_set_cert_verify_callback() prototype, the callback
6117 declaration has been changed from
6120 int (*cb)(X509_STORE_CTX *,void *);
6121 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
6122 i=s->ctx->app_verify_callback(&ctx)
6123 has been changed into
6124 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
6126 To update applications using SSL_CTX_set_cert_verify_callback(),
6127 a dummy argument can be added to their callback functions.
6128 [D. K. Smetters <smetters@parc.xerox.com>]
6130 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
6131 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
6133 *) Add and OPENSSL_LOAD_CONF define which will cause
6134 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
6135 This allows older applications to transparently support certain
6136 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
6137 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
6138 load the config file and OPENSSL_add_all_algorithms_conf() which will
6139 always load it have also been added.
6142 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
6143 Adjust NIDs and EVP layer.
6144 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
6146 *) Config modules support in openssl utility.
6148 Most commands now load modules from the config file,
6149 though in a few (such as version) this isn't done
6150 because it couldn't be used for anything.
6152 In the case of ca and req the config file used is
6153 the same as the utility itself: that is the -config
6154 command line option can be used to specify an
6158 *) Move default behaviour from OPENSSL_config(). If appname is NULL
6159 use "openssl_conf" if filename is NULL use default openssl config file.
6162 *) Add an argument to OPENSSL_config() to allow the use of an alternative
6163 config section name. Add a new flag to tolerate a missing config file
6164 and move code to CONF_modules_load_file().
6167 *) Support for crypto accelerator cards from Accelerated Encryption
6168 Processing, www.aep.ie. (Use engine 'aep')
6169 The support was copied from 0.9.6c [engine] and adapted/corrected
6170 to work with the new engine framework.
6171 [AEP Inc. and Richard Levitte]
6173 *) Support for SureWare crypto accelerator cards from Baltimore
6174 Technologies. (Use engine 'sureware')
6175 The support was copied from 0.9.6c [engine] and adapted
6176 to work with the new engine framework.
6179 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
6180 make the newer ENGINE framework commands for the CHIL engine work.
6181 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
6183 *) Make it possible to produce shared libraries on ReliantUNIX.
6184 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
6186 *) Add the configuration target debug-linux-ppro.
6187 Make 'openssl rsa' use the general key loading routines
6188 implemented in apps.c, and make those routines able to
6189 handle the key format FORMAT_NETSCAPE and the variant
6191 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
6193 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
6194 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
6196 *) Add -keyform to rsautl, and document -engine.
6197 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
6199 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
6200 BIO_R_NO_SUCH_FILE error code rather than the generic
6201 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
6204 *) Add new functions
6206 ERR_peek_last_error_line
6207 ERR_peek_last_error_line_data.
6208 These are similar to
6211 ERR_peek_error_line_data,
6212 but report on the latest error recorded rather than the first one
6213 still in the error queue.
6214 [Ben Laurie, Bodo Moeller]
6216 *) default_algorithms option in ENGINE config module. This allows things
6218 default_algorithms = ALL
6219 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
6222 *) Preliminary ENGINE config module.
6225 *) New experimental application configuration code.
6228 *) Change the AES code to follow the same name structure as all other
6229 symmetric ciphers, and behave the same way. Move everything to
6230 the directory crypto/aes, thereby obsoleting crypto/rijndael.
6231 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
6233 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
6234 [Ben Laurie and Theo de Raadt]
6236 *) Add option to output public keys in req command.
6237 [Massimiliano Pala madwolf@openca.org]
6239 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
6240 (up to about 10% better than before for P-192 and P-224).
6243 *) New functions/macros
6245 SSL_CTX_set_msg_callback(ctx, cb)
6246 SSL_CTX_set_msg_callback_arg(ctx, arg)
6247 SSL_set_msg_callback(ssl, cb)
6248 SSL_set_msg_callback_arg(ssl, arg)
6250 to request calling a callback function
6252 void cb(int write_p, int version, int content_type,
6253 const void *buf, size_t len, SSL *ssl, void *arg)
6255 whenever a protocol message has been completely received
6256 (write_p == 0) or sent (write_p == 1). Here 'version' is the
6257 protocol version according to which the SSL library interprets
6258 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
6259 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
6260 the content type as defined in the SSL 3.0/TLS 1.0 protocol
6261 specification (change_cipher_spec(20), alert(21), handshake(22)).
6262 'buf' and 'len' point to the actual message, 'ssl' to the
6263 SSL object, and 'arg' is the application-defined value set by
6264 SSL[_CTX]_set_msg_callback_arg().
6266 'openssl s_client' and 'openssl s_server' have new '-msg' options
6267 to enable a callback that displays all protocol messages.
6270 *) Change the shared library support so shared libraries are built as
6271 soon as the corresponding static library is finished, and thereby get
6272 openssl and the test programs linked against the shared library.
6273 This still only happens when the keyword "shard" has been given to
6274 the configuration scripts.
6276 NOTE: shared library support is still an experimental thing, and
6277 backward binary compatibility is still not guaranteed.
6278 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
6280 *) Add support for Subject Information Access extension.
6281 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
6283 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
6284 additional bytes when new memory had to be allocated, not just
6285 when reusing an existing buffer.
6288 *) New command line and configuration option 'utf8' for the req command.
6289 This allows field values to be specified as UTF8 strings.
6292 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
6293 runs for the former and machine-readable output for the latter.
6296 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
6297 of the e-mail address in the DN (i.e., it will go into a certificate
6298 extension only). The new configuration file option 'email_in_dn = no'
6299 has the same effect.
6300 [Massimiliano Pala madwolf@openca.org]
6302 *) Change all functions with names starting with des_ to be starting
6303 with DES_ instead. Add wrappers that are compatible with libdes,
6304 but are named _ossl_old_des_*. Finally, add macros that map the
6305 des_* symbols to the corresponding _ossl_old_des_* if libdes
6306 compatibility is desired. If OpenSSL 0.9.6c compatibility is
6307 desired, the des_* symbols will be mapped to DES_*, with one
6310 Since we provide two compatibility mappings, the user needs to
6311 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
6312 compatibility is desired. The default (i.e., when that macro
6313 isn't defined) is OpenSSL 0.9.6c compatibility.
6315 There are also macros that enable and disable the support of old
6316 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
6317 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
6318 are defined, the default will apply: to support the old des routines.
6320 In either case, one must include openssl/des.h to get the correct
6321 definitions. Do not try to just include openssl/des_old.h, that
6324 NOTE: This is a major break of an old API into a new one. Software
6325 authors are encouraged to switch to the DES_ style functions. Some
6326 time in the future, des_old.h and the libdes compatibility functions
6327 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
6328 default), and then completely removed.
6331 *) Test for certificates which contain unsupported critical extensions.
6332 If such a certificate is found during a verify operation it is
6333 rejected by default: this behaviour can be overridden by either
6334 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
6335 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
6336 X509_supported_extension() has also been added which returns 1 if a
6337 particular extension is supported.
6340 *) Modify the behaviour of EVP cipher functions in similar way to digests
6341 to retain compatibility with existing code.
6344 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
6345 compatibility with existing code. In particular the 'ctx' parameter does
6346 not have to be to be initialized before the call to EVP_DigestInit() and
6347 it is tidied up after a call to EVP_DigestFinal(). New function
6348 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
6349 EVP_MD_CTX_copy() changed to not require the destination to be
6350 initialized valid and new function EVP_MD_CTX_copy_ex() added which
6351 requires the destination to be valid.
6353 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
6354 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
6357 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
6358 so that complete 'Handshake' protocol structures are kept in memory
6359 instead of overwriting 'msg_type' and 'length' with 'body' data.
6362 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
6363 [Massimo Santin via Richard Levitte]
6365 *) Major restructuring to the underlying ENGINE code. This includes
6366 reduction of linker bloat, separation of pure "ENGINE" manipulation
6367 (initialisation, etc) from functionality dealing with implementations
6368 of specific crypto iterfaces. This change also introduces integrated
6369 support for symmetric ciphers and digest implementations - so ENGINEs
6370 can now accelerate these by providing EVP_CIPHER and EVP_MD
6371 implementations of their own. This is detailed in crypto/engine/README
6372 as it couldn't be adequately described here. However, there are a few
6373 API changes worth noting - some RSA, DSA, DH, and RAND functions that
6374 were changed in the original introduction of ENGINE code have now
6375 reverted back - the hooking from this code to ENGINE is now a good
6376 deal more passive and at run-time, operations deal directly with
6377 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
6378 dereferencing through an ENGINE pointer any more. Also, the ENGINE
6379 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
6380 they were not being used by the framework as there is no concept of a
6381 BIGNUM_METHOD and they could not be generalised to the new
6382 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
6383 ENGINE_cpy() has been removed as it cannot be consistently defined in
6387 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
6390 *) Change mkdef.pl to sort symbols that get the same entry number,
6391 and make sure the automatically generated functions ERR_load_*
6392 become part of libeay.num as well.
6395 *) New function SSL_renegotiate_pending(). This returns true once
6396 renegotiation has been requested (either SSL_renegotiate() call
6397 or HelloRequest/ClientHello received from the peer) and becomes
6398 false once a handshake has been completed.
6399 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
6400 sends a HelloRequest, but does not ensure that a handshake takes
6401 place. SSL_renegotiate_pending() is useful for checking if the
6402 client has followed the request.)
6405 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
6406 By default, clients may request session resumption even during
6407 renegotiation (if session ID contexts permit); with this option,
6408 session resumption is possible only in the first handshake.
6410 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
6411 more bits available for options that should not be part of
6412 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
6415 *) Add some demos for certificate and certificate request creation.
6418 *) Make maximum certificate chain size accepted from the peer application
6419 settable (SSL*_get/set_max_cert_list()), as proposed by
6420 "Douglas E. Engert" <deengert@anl.gov>.
6423 *) Add support for shared libraries for Unixware-7
6424 (Boyd Lynn Gerber <gerberb@zenez.com>).
6427 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
6428 be done prior to destruction. Use this to unload error strings from
6429 ENGINEs that load their own error strings. NB: This adds two new API
6430 functions to "get" and "set" this destroy handler in an ENGINE.
6433 *) Alter all existing ENGINE implementations (except "openssl" and
6434 "openbsd") to dynamically instantiate their own error strings. This
6435 makes them more flexible to be built both as statically-linked ENGINEs
6436 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
6437 Also, add stub code to each that makes building them as self-contained
6438 shared-libraries easier (see README.ENGINE).
6441 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
6442 implementations into applications that are completely implemented in
6443 self-contained shared-libraries. The "dynamic" ENGINE exposes control
6444 commands that can be used to configure what shared-library to load and
6445 to control aspects of the way it is handled. Also, made an update to
6446 the README.ENGINE file that brings its information up-to-date and
6447 provides some information and instructions on the "dynamic" ENGINE
6448 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
6451 *) Make it possible to unload ranges of ERR strings with a new
6452 "ERR_unload_strings" function.
6455 *) Add a copy() function to EVP_MD.
6458 *) Make EVP_MD routines take a context pointer instead of just the
6459 md_data void pointer.
6462 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
6463 that the digest can only process a single chunk of data
6464 (typically because it is provided by a piece of
6465 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
6466 is only going to provide a single chunk of data, and hence the
6467 framework needn't accumulate the data for oneshot drivers.
6470 *) As with "ERR", make it possible to replace the underlying "ex_data"
6471 functions. This change also alters the storage and management of global
6472 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
6473 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
6474 index counters. The API functions that use this state have been changed
6475 to take a "class_index" rather than pointers to the class's local STACK
6476 and counter, and there is now an API function to dynamically create new
6477 classes. This centralisation allows us to (a) plug a lot of the
6478 thread-safety problems that existed, and (b) makes it possible to clean
6479 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
6480 such data would previously have always leaked in application code and
6481 workarounds were in place to make the memory debugging turn a blind eye
6482 to it. Application code that doesn't use this new function will still
6483 leak as before, but their memory debugging output will announce it now
6484 rather than letting it slide.
6486 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
6487 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
6488 has a return value to indicate success or failure.
6491 *) Make it possible to replace the underlying "ERR" functions such that the
6492 global state (2 LHASH tables and 2 locks) is only used by the "default"
6493 implementation. This change also adds two functions to "get" and "set"
6494 the implementation prior to it being automatically set the first time
6495 any other ERR function takes place. Ie. an application can call "get",
6496 pass the return value to a module it has just loaded, and that module
6497 can call its own "set" function using that value. This means the
6498 module's "ERR" operations will use (and modify) the error state in the
6499 application and not in its own statically linked copy of OpenSSL code.
6502 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
6503 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
6504 the operation, and provides a more encapsulated way for external code
6505 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
6506 to use these functions rather than manually incrementing the counts.
6508 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
6511 *) Add EVP test program.
6514 *) Add symmetric cipher support to ENGINE. Expect the API to change!
6517 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
6518 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
6519 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
6520 These allow a CRL to be built without having to access X509_CRL fields
6521 directly. Modify 'ca' application to use new functions.
6524 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
6525 bug workarounds. Rollback attack detection is a security feature.
6526 The problem will only arise on OpenSSL servers when TLSv1 is not
6527 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
6528 Software authors not wanting to support TLSv1 will have special reasons
6529 for their choice and can explicitly enable this option.
6530 [Bodo Moeller, Lutz Jaenicke]
6532 *) Rationalise EVP so it can be extended: don't include a union of
6533 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
6534 (similar to those existing for EVP_CIPHER_CTX).
6539 EVP_MD_CTX_init(&md); /* new function call */
6540 EVP_DigestInit(&md, EVP_sha1());
6541 EVP_DigestUpdate(&md, in, len);
6542 EVP_DigestFinal(&md, out, NULL);
6543 EVP_MD_CTX_cleanup(&md); /* new function call */
6547 *) Make DES key schedule conform to the usual scheme, as well as
6548 correcting its structure. This means that calls to DES functions
6549 now have to pass a pointer to a des_key_schedule instead of a
6550 plain des_key_schedule (which was actually always a pointer
6553 des_key_schedule ks;
6555 des_set_key_checked(..., &ks);
6556 des_ncbc_encrypt(..., &ks, ...);
6558 (Note that a later change renames 'des_...' into 'DES_...'.)
6561 *) Initial reduction of linker bloat: the use of some functions, such as
6562 PEM causes large amounts of unused functions to be linked in due to
6563 poor organisation. For example pem_all.c contains every PEM function
6564 which has a knock on effect of linking in large amounts of (unused)
6565 ASN1 code. Grouping together similar functions and splitting unrelated
6566 functions prevents this.
6569 *) Cleanup of EVP macros.
6572 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
6573 correct _ecb suffix.
6576 *) Add initial OCSP responder support to ocsp application. The
6577 revocation information is handled using the text based index
6578 use by the ca application. The responder can either handle
6579 requests generated internally, supplied in files (for example
6580 via a CGI script) or using an internal minimal server.
6583 *) Add configuration choices to get zlib compression for TLS.
6586 *) Changes to Kerberos SSL for RFC 2712 compliance:
6587 1. Implemented real KerberosWrapper, instead of just using
6588 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
6589 2. Implemented optional authenticator field of KerberosWrapper.
6591 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
6592 and authenticator structs; see crypto/krb5/.
6594 Generalized Kerberos calls to support multiple Kerberos libraries.
6595 [Vern Staats <staatsvr@asc.hpc.mil>,
6596 Jeffrey Altman <jaltman@columbia.edu>
6597 via Richard Levitte]
6599 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
6600 already does with RSA. testdsa.h now has 'priv_key/pub_key'
6601 values for each of the key sizes rather than having just
6602 parameters (and 'speed' generating keys each time).
6605 *) Speed up EVP routines.
6608 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
6609 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
6610 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
6611 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
6613 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
6614 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
6615 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
6618 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
6620 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
6623 *) Added the OS2-EMX target.
6624 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
6626 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
6627 to support NCONF routines in extension code. New function CONF_set_nconf()
6628 to allow functions which take an NCONF to also handle the old LHASH
6629 structure: this means that the old CONF compatible routines can be
6630 retained (in particular wrt extensions) without having to duplicate the
6631 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
6634 *) Enhance the general user interface with mechanisms for inner control
6635 and with possibilities to have yes/no kind of prompts.
6638 *) Change all calls to low level digest routines in the library and
6639 applications to use EVP. Add missing calls to HMAC_cleanup() and
6640 don't assume HMAC_CTX can be copied using memcpy().
6641 [Verdon Walker <VWalker@novell.com>, Steve Henson]
6643 *) Add the possibility to control engines through control names but with
6644 arbitrary arguments instead of just a string.
6645 Change the key loaders to take a UI_METHOD instead of a callback
6646 function pointer. NOTE: this breaks binary compatibility with earlier
6647 versions of OpenSSL [engine].
6648 Adapt the nCipher code for these new conditions and add a card insertion
6652 *) Enhance the general user interface with mechanisms to better support
6653 dialog box interfaces, application-defined prompts, the possibility
6654 to use defaults (for example default passwords from somewhere else)
6655 and interrupts/cancellations.
6658 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
6659 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
6662 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
6663 tidy up some unnecessarily weird code in 'sk_new()').
6664 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
6666 *) Change the key loading routines for ENGINEs to use the same kind
6667 callback (pem_password_cb) as all other routines that need this
6671 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
6672 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
6673 than this minimum value is recommended.
6676 *) New random seeder for OpenVMS, using the system process statistics
6677 that are easily reachable.
6680 *) Windows apparently can't transparently handle global
6681 variables defined in DLLs. Initialisations such as:
6683 const ASN1_ITEM *it = &ASN1_INTEGER_it;
6685 wont compile. This is used by the any applications that need to
6686 declare their own ASN1 modules. This was fixed by adding the option
6687 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
6688 needed for static libraries under Win32.
6691 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
6692 setting of purpose and trust fields. New X509_STORE trust and
6693 purpose functions and tidy up setting in other SSL functions.
6696 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
6697 structure. These are inherited by X509_STORE_CTX when it is
6698 initialised. This allows various defaults to be set in the
6699 X509_STORE structure (such as flags for CRL checking and custom
6700 purpose or trust settings) for functions which only use X509_STORE_CTX
6701 internally such as S/MIME.
6703 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
6704 trust settings if they are not set in X509_STORE. This allows X509_STORE
6705 purposes and trust (in S/MIME for example) to override any set by default.
6707 Add command line options for CRL checking to smime, s_client and s_server
6711 *) Initial CRL based revocation checking. If the CRL checking flag(s)
6712 are set then the CRL is looked up in the X509_STORE structure and
6713 its validity and signature checked, then if the certificate is found
6714 in the CRL the verify fails with a revoked error.
6716 Various new CRL related callbacks added to X509_STORE_CTX structure.
6718 Command line options added to 'verify' application to support this.
6720 This needs some additional work, such as being able to handle multiple
6721 CRLs with different times, extension based lookup (rather than just
6722 by subject name) and ultimately more complete V2 CRL extension
6726 *) Add a general user interface API (crypto/ui/). This is designed
6727 to replace things like des_read_password and friends (backward
6728 compatibility functions using this new API are provided).
6729 The purpose is to remove prompting functions from the DES code
6730 section as well as provide for prompting through dialog boxes in
6731 a window system and the like.
6734 *) Add "ex_data" support to ENGINE so implementations can add state at a
6735 per-structure level rather than having to store it globally.
6738 *) Make it possible for ENGINE structures to be copied when retrieved by
6739 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
6740 This causes the "original" ENGINE structure to act like a template,
6741 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
6742 operational state can be localised to each ENGINE structure, despite the
6743 fact they all share the same "methods". New ENGINE structures returned in
6744 this case have no functional references and the return value is the single
6745 structural reference. This matches the single structural reference returned
6746 by ENGINE_by_id() normally, when it is incremented on the pre-existing
6750 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
6751 needs to match any other type at all we need to manually clear the
6755 *) Changes to the "openssl engine" utility to include;
6756 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
6757 about an ENGINE's available control commands.
6758 - executing control commands from command line arguments using the
6759 '-pre' and '-post' switches. '-post' is only used if '-t' is
6760 specified and the ENGINE is successfully initialised. The syntax for
6761 the individual commands are colon-separated, for example;
6762 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
6765 *) New dynamic control command support for ENGINEs. ENGINEs can now
6766 declare their own commands (numbers), names (strings), descriptions,
6767 and input types for run-time discovery by calling applications. A
6768 subset of these commands are implicitly classed as "executable"
6769 depending on their input type, and only these can be invoked through
6770 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
6771 can be based on user input, config files, etc). The distinction is
6772 that "executable" commands cannot return anything other than a boolean
6773 result and can only support numeric or string input, whereas some
6774 discoverable commands may only be for direct use through
6775 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
6776 pointers, or other custom uses. The "executable" commands are to
6777 support parameterisations of ENGINE behaviour that can be
6778 unambiguously defined by ENGINEs and used consistently across any
6779 OpenSSL-based application. Commands have been added to all the
6780 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
6781 control over shared-library paths without source code alterations.
6784 *) Changed all ENGINE implementations to dynamically allocate their
6785 ENGINEs rather than declaring them statically. Apart from this being
6786 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
6787 this also allows the implementations to compile without using the
6788 internal engine_int.h header.
6791 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
6792 'const' value. Any code that should be able to modify a RAND_METHOD
6793 should already have non-const pointers to it (ie. they should only
6794 modify their own ones).
6797 *) Made a variety of little tweaks to the ENGINE code.
6798 - "atalla" and "ubsec" string definitions were moved from header files
6799 to C code. "nuron" string definitions were placed in variables
6800 rather than hard-coded - allowing parameterisation of these values
6801 later on via ctrl() commands.
6802 - Removed unused "#if 0"'d code.
6803 - Fixed engine list iteration code so it uses ENGINE_free() to release
6804 structural references.
6805 - Constified the RAND_METHOD element of ENGINE structures.
6806 - Constified various get/set functions as appropriate and added
6807 missing functions (including a catch-all ENGINE_cpy that duplicates
6808 all ENGINE values onto a new ENGINE except reference counts/state).
6809 - Removed NULL parameter checks in get/set functions. Setting a method
6810 or function to NULL is a way of cancelling out a previously set
6811 value. Passing a NULL ENGINE parameter is just plain stupid anyway
6812 and doesn't justify the extra error symbols and code.
6813 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
6814 flags from engine_int.h to engine.h.
6815 - Changed prototypes for ENGINE handler functions (init(), finish(),
6816 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
6819 *) Implement binary inversion algorithm for BN_mod_inverse in addition
6820 to the algorithm using long division. The binary algorithm can be
6821 used only if the modulus is odd. On 32-bit systems, it is faster
6822 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
6823 roughly 5-15% for 256-bit moduli), so we use it only for moduli
6824 up to 450 bits. In 64-bit environments, the binary algorithm
6825 appears to be advantageous for much longer moduli; here we use it
6826 for moduli up to 2048 bits.
6829 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
6830 could not support the combine flag in choice fields.
6833 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
6834 extensions from a certificate request to the certificate.
6837 *) Allow multiple 'certopt' and 'nameopt' options to be separated
6838 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
6839 file: this allows the display of the certificate about to be
6840 signed to be customised, to allow certain fields to be included
6841 or excluded and extension details. The old system didn't display
6842 multicharacter strings properly, omitted fields not in the policy
6843 and couldn't display additional details such as extensions.
6846 *) Function EC_POINTs_mul for multiple scalar multiplication
6847 of an arbitrary number of elliptic curve points
6848 \sum scalars[i]*points[i],
6849 optionally including the generator defined for the EC_GROUP:
6850 scalar*generator + \sum scalars[i]*points[i].
6852 EC_POINT_mul is a simple wrapper function for the typical case
6853 that the point list has just one item (besides the optional
6857 *) First EC_METHODs for curves over GF(p):
6859 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
6860 operations and provides various method functions that can also
6861 operate with faster implementations of modular arithmetic.
6863 EC_GFp_mont_method() reuses most functions that are part of
6864 EC_GFp_simple_method, but uses Montgomery arithmetic.
6866 [Bodo Moeller; point addition and point doubling
6867 implementation directly derived from source code provided by
6868 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
6870 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
6871 crypto/ec/ec_lib.c):
6873 Curves are EC_GROUP objects (with an optional group generator)
6874 based on EC_METHODs that are built into the library.
6876 Points are EC_POINT objects based on EC_GROUP objects.
6878 Most of the framework would be able to handle curves over arbitrary
6879 finite fields, but as there are no obvious types for fields other
6880 than GF(p), some functions are limited to that for now.
6883 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
6884 that the file contains a complete HTTP response.
6887 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
6888 change the def and num file printf format specifier from "%-40sXXX"
6889 to "%-39s XXX". The latter will always guarantee a space after the
6890 field while the former will cause them to run together if the field
6891 is 40 of more characters long.
6894 *) Constify the cipher and digest 'method' functions and structures
6895 and modify related functions to take constant EVP_MD and EVP_CIPHER
6899 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
6900 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
6903 *) Modify EVP_Digest*() routines so they now return values. Although the
6904 internal software routines can never fail additional hardware versions
6908 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
6910 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
6911 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
6914 ERR_R_NESTED_ASN1_ERROR
6916 ERR_R_MISSING_ASN1_EOS
6917 were 4 .. 9, conflicting with
6918 ERR_LIB_RSA (= ERR_R_RSA_LIB)
6920 ERR_LIB_PEM (= ERR_R_PEM_LIB).
6921 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
6923 Add new error code 'ERR_R_INTERNAL_ERROR'.
6926 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
6930 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
6931 sets the subject name for a new request or supersedes the
6932 subject name in a given request. Formats that can be parsed are
6933 'CN=Some Name, OU=myOU, C=IT'
6935 'CN=Some Name/OU=myOU/C=IT'.
6937 Add options '-batch' and '-verbose' to 'openssl req'.
6938 [Massimiliano Pala <madwolf@hackmasters.net>]
6940 *) Introduce the possibility to access global variables through
6941 functions on platform were that's the best way to handle exporting
6942 global variables in shared libraries. To enable this functionality,
6943 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
6944 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
6945 is normally done by Configure or something similar).
6947 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
6948 in the source file (foo.c) like this:
6950 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
6951 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
6953 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
6954 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
6956 OPENSSL_DECLARE_GLOBAL(int,foo);
6957 #define foo OPENSSL_GLOBAL_REF(foo)
6958 OPENSSL_DECLARE_GLOBAL(double,bar);
6959 #define bar OPENSSL_GLOBAL_REF(bar)
6961 The #defines are very important, and therefore so is including the
6962 header file everywhere where the defined globals are used.
6964 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
6965 of ASN.1 items, but that structure is a bit different.
6967 The largest change is in util/mkdef.pl which has been enhanced with
6968 better and easier to understand logic to choose which symbols should
6969 go into the Windows .def files as well as a number of fixes and code
6970 cleanup (among others, algorithm keywords are now sorted
6971 lexicographically to avoid constant rewrites).
6974 *) In BN_div() keep a copy of the sign of 'num' before writing the
6975 result to 'rm' because if rm==num the value will be overwritten
6976 and produce the wrong result if 'num' is negative: this caused
6977 problems with BN_mod() and BN_nnmod().
6980 *) Function OCSP_request_verify(). This checks the signature on an
6981 OCSP request and verifies the signer certificate. The signer
6982 certificate is just checked for a generic purpose and OCSP request
6986 *) Add OCSP_check_validity() function to check the validity of OCSP
6987 responses. OCSP responses are prepared in real time and may only
6988 be a few seconds old. Simply checking that the current time lies
6989 between thisUpdate and nextUpdate max reject otherwise valid responses
6990 caused by either OCSP responder or client clock inaccuracy. Instead
6991 we allow thisUpdate and nextUpdate to fall within a certain period of
6992 the current time. The age of the response can also optionally be
6993 checked. Two new options -validity_period and -status_age added to
6997 *) If signature or public key algorithm is unrecognized print out its
6998 OID rather that just UNKNOWN.
7001 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
7002 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
7003 ID to be generated from the issuer certificate alone which can then be
7004 passed to OCSP_id_issuer_cmp().
7007 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
7008 ASN1 modules to export functions returning ASN1_ITEM pointers
7009 instead of the ASN1_ITEM structures themselves. This adds several
7010 new macros which allow the underlying ASN1 function/structure to
7011 be accessed transparently. As a result code should not use ASN1_ITEM
7012 references directly (such as &X509_it) but instead use the relevant
7013 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
7014 use of the new ASN1 code on platforms where exporting structures
7015 is problematical (for example in shared libraries) but exporting
7016 functions returning pointers to structures is not.
7019 *) Add support for overriding the generation of SSL/TLS session IDs.
7020 These callbacks can be registered either in an SSL_CTX or per SSL.
7021 The purpose of this is to allow applications to control, if they wish,
7022 the arbitrary values chosen for use as session IDs, particularly as it
7023 can be useful for session caching in multiple-server environments. A
7024 command-line switch for testing this (and any client code that wishes
7025 to use such a feature) has been added to "s_server".
7026 [Geoff Thorpe, Lutz Jaenicke]
7028 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
7029 of the form '#if defined(...) || defined(...) || ...' and
7030 '#if !defined(...) && !defined(...) && ...'. This also avoids
7031 the growing number of special cases it was previously handling.
7034 *) Make all configuration macros available for application by making
7035 sure they are available in opensslconf.h, by giving them names starting
7036 with "OPENSSL_" to avoid conflicts with other packages and by making
7037 sure e_os2.h will cover all platform-specific cases together with
7039 Additionally, it is now possible to define configuration/platform-
7040 specific names (called "system identities"). In the C code, these
7041 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
7042 macro with the name beginning with "OPENSSL_SYS_", which is determined
7043 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
7047 *) New option -set_serial to 'req' and 'x509' this allows the serial
7048 number to use to be specified on the command line. Previously self
7049 signed certificates were hard coded with serial number 0 and the
7050 CA options of 'x509' had to use a serial number in a file which was
7054 *) New options to 'ca' utility to support V2 CRL entry extensions.
7055 Currently CRL reason, invalidity date and hold instruction are
7056 supported. Add new CRL extensions to V3 code and some new objects.
7059 *) New function EVP_CIPHER_CTX_set_padding() this is used to
7060 disable standard block padding (aka PKCS#5 padding) in the EVP
7061 API, which was previously mandatory. This means that the data is
7062 not padded in any way and so the total length much be a multiple
7063 of the block size, otherwise an error occurs.
7066 *) Initial (incomplete) OCSP SSL support.
7069 *) New function OCSP_parse_url(). This splits up a URL into its host,
7070 port and path components: primarily to parse OCSP URLs. New -url
7071 option to ocsp utility.
7074 *) New nonce behavior. The return value of OCSP_check_nonce() now
7075 reflects the various checks performed. Applications can decide
7076 whether to tolerate certain situations such as an absent nonce
7077 in a response when one was present in a request: the ocsp application
7078 just prints out a warning. New function OCSP_add1_basic_nonce()
7079 this is to allow responders to include a nonce in a response even if
7080 the request is nonce-less.
7083 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
7084 skipped when using openssl x509 multiple times on a single input file,
7085 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
7088 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
7089 set string type: to handle setting ASN1_TIME structures. Fix ca
7090 utility to correctly initialize revocation date of CRLs.
7093 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
7094 the clients preferred ciphersuites and rather use its own preferences.
7095 Should help to work around M$ SGC (Server Gated Cryptography) bug in
7096 Internet Explorer by ensuring unchanged hash method during stepup.
7097 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
7100 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
7101 to aes and add a new 'exist' option to print out symbols that don't
7105 *) Additional options to ocsp utility to allow flags to be set and
7106 additional certificates supplied.
7109 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
7110 OCSP client a number of certificate to only verify the response
7114 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
7115 handle the new API. Currently only ECB, CBC modes supported. Add new
7118 Add TLS AES ciphersuites as described in RFC3268, "Advanced
7119 Encryption Standard (AES) Ciphersuites for Transport Layer
7120 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
7121 not enabled by default and were not part of the "ALL" ciphersuite
7122 alias because they were not yet official; they could be
7123 explicitly requested by specifying the "AESdraft" ciphersuite
7124 group alias. In the final release of OpenSSL 0.9.7, the group
7125 alias is called "AES" and is part of "ALL".)
7126 [Ben Laurie, Steve Henson, Bodo Moeller]
7128 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
7129 request to response.
7132 *) Functions for OCSP responders. OCSP_request_onereq_count(),
7133 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
7134 extract information from a certificate request. OCSP_response_create()
7135 creates a response and optionally adds a basic response structure.
7136 OCSP_basic_add1_status() adds a complete single response to a basic
7137 response and returns the OCSP_SINGLERESP structure just added (to allow
7138 extensions to be included for example). OCSP_basic_add1_cert() adds a
7139 certificate to a basic response and OCSP_basic_sign() signs a basic
7140 response with various flags. New helper functions ASN1_TIME_check()
7141 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
7142 (converts ASN1_TIME to GeneralizedTime).
7145 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
7146 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
7147 structure from a certificate. X509_pubkey_digest() digests the public_key
7148 contents: this is used in various key identifiers.
7151 *) Make sk_sort() tolerate a NULL argument.
7152 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
7154 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
7155 passed by the function are trusted implicitly. If any of them signed the
7156 response then it is assumed to be valid and is not verified.
7159 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
7160 to data. This was previously part of the PKCS7 ASN1 code. This
7161 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
7162 [Steve Henson, reported by Kenneth R. Robinette
7163 <support@securenetterm.com>]
7165 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
7166 routines: without these tracing memory leaks is very painful.
7167 Fix leaks in PKCS12 and PKCS7 routines.
7170 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
7171 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
7172 effectively meant GeneralizedTime would never be used. Now it
7173 is initialised to -1 but X509_time_adj() now has to check the value
7174 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
7175 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
7176 [Steve Henson, reported by Kenneth R. Robinette
7177 <support@securenetterm.com>]
7179 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
7180 result in a zero length in the ASN1_INTEGER structure which was
7181 not consistent with the structure when d2i_ASN1_INTEGER() was used
7182 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
7183 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
7184 where it did not print out a minus for negative ASN1_INTEGER.
7187 *) Add summary printout to ocsp utility. The various functions which
7188 convert status values to strings have been renamed to:
7189 OCSP_response_status_str(), OCSP_cert_status_str() and
7190 OCSP_crl_reason_str() and are no longer static. New options
7191 to verify nonce values and to disable verification. OCSP response
7192 printout format cleaned up.
7195 *) Add additional OCSP certificate checks. These are those specified
7196 in RFC2560. This consists of two separate checks: the CA of the
7197 certificate being checked must either be the OCSP signer certificate
7198 or the issuer of the OCSP signer certificate. In the latter case the
7199 OCSP signer certificate must contain the OCSP signing extended key
7200 usage. This check is performed by attempting to match the OCSP
7201 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
7202 in the OCSP_CERTID structures of the response.
7205 *) Initial OCSP certificate verification added to OCSP_basic_verify()
7206 and related routines. This uses the standard OpenSSL certificate
7207 verify routines to perform initial checks (just CA validity) and
7208 to obtain the certificate chain. Then additional checks will be
7209 performed on the chain. Currently the root CA is checked to see
7210 if it is explicitly trusted for OCSP signing. This is used to set
7211 a root CA as a global signing root: that is any certificate that
7212 chains to that CA is an acceptable OCSP signing certificate.
7215 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
7216 extensions from a separate configuration file.
7217 As when reading extensions from the main configuration file,
7218 the '-extensions ...' option may be used for specifying the
7220 [Massimiliano Pala <madwolf@comune.modena.it>]
7222 *) New OCSP utility. Allows OCSP requests to be generated or
7223 read. The request can be sent to a responder and the output
7224 parsed, outputed or printed in text form. Not complete yet:
7225 still needs to check the OCSP response validity.
7228 *) New subcommands for 'openssl ca':
7229 'openssl ca -status <serial>' prints the status of the cert with
7230 the given serial number (according to the index file).
7231 'openssl ca -updatedb' updates the expiry status of certificates
7233 [Massimiliano Pala <madwolf@comune.modena.it>]
7235 *) New '-newreq-nodes' command option to CA.pl. This is like
7236 '-newreq', but calls 'openssl req' with the '-nodes' option
7237 so that the resulting key is not encrypted.
7238 [Damien Miller <djm@mindrot.org>]
7240 *) New configuration for the GNU Hurd.
7241 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
7243 *) Initial code to implement OCSP basic response verify. This
7244 is currently incomplete. Currently just finds the signer's
7245 certificate and verifies the signature on the response.
7248 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
7249 value of OPENSSLDIR. This is available via the new '-d' option
7250 to 'openssl version', and is also included in 'openssl version -a'.
7253 *) Allowing defining memory allocation callbacks that will be given
7254 file name and line number information in additional arguments
7255 (a const char* and an int). The basic functionality remains, as
7256 well as the original possibility to just replace malloc(),
7257 realloc() and free() by functions that do not know about these
7258 additional arguments. To register and find out the current
7259 settings for extended allocation functions, the following
7260 functions are provided:
7262 CRYPTO_set_mem_ex_functions
7263 CRYPTO_set_locked_mem_ex_functions
7264 CRYPTO_get_mem_ex_functions
7265 CRYPTO_get_locked_mem_ex_functions
7267 These work the same way as CRYPTO_set_mem_functions and friends.
7268 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
7269 extended allocation function is enabled.
7270 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
7271 a conventional allocation function is enabled.
7272 [Richard Levitte, Bodo Moeller]
7274 *) Finish off removing the remaining LHASH function pointer casts.
7275 There should no longer be any prototype-casting required when using
7276 the LHASH abstraction, and any casts that remain are "bugs". See
7277 the callback types and macros at the head of lhash.h for details
7278 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
7281 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
7282 If /dev/[u]random devices are not available or do not return enough
7283 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
7285 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
7286 /etc/entropy will be queried once each in this sequence, quering stops
7287 when enough entropy was collected without querying more sockets.
7290 *) Change the Unix RAND_poll() variant to be able to poll several
7291 random devices, as specified by DEVRANDOM, until a sufficient amount
7292 of data has been collected. We spend at most 10 ms on each file
7293 (select timeout) and read in non-blocking mode. DEVRANDOM now
7294 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
7295 (previously it was just the string "/dev/urandom"), so on typical
7296 platforms the 10 ms delay will never occur.
7297 Also separate out the Unix variant to its own file, rand_unix.c.
7298 For VMS, there's a currently-empty rand_vms.c.
7301 *) Move OCSP client related routines to ocsp_cl.c. These
7302 provide utility functions which an application needing
7303 to issue a request to an OCSP responder and analyse the
7304 response will typically need: as opposed to those which an
7305 OCSP responder itself would need which will be added later.
7307 OCSP_request_sign() signs an OCSP request with an API similar
7308 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
7309 response. OCSP_response_get1_basic() extracts basic response
7310 from response. OCSP_resp_find_status(): finds and extracts status
7311 information from an OCSP_CERTID structure (which will be created
7312 when the request structure is built). These are built from lower
7313 level functions which work on OCSP_SINGLERESP structures but
7314 wont normally be used unless the application wishes to examine
7315 extensions in the OCSP response for example.
7317 Replace nonce routines with a pair of functions.
7318 OCSP_request_add1_nonce() adds a nonce value and optionally
7319 generates a random value. OCSP_check_nonce() checks the
7320 validity of the nonce in an OCSP response.
7323 *) Change function OCSP_request_add() to OCSP_request_add0_id().
7324 This doesn't copy the supplied OCSP_CERTID and avoids the
7325 need to free up the newly created id. Change return type
7326 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
7327 This can then be used to add extensions to the request.
7328 Deleted OCSP_request_new(), since most of its functionality
7329 is now in OCSP_REQUEST_new() (and the case insensitive name
7330 clash) apart from the ability to set the request name which
7331 will be added elsewhere.
7334 *) Update OCSP API. Remove obsolete extensions argument from
7335 various functions. Extensions are now handled using the new
7336 OCSP extension code. New simple OCSP HTTP function which
7337 can be used to send requests and parse the response.
7340 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
7341 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
7342 uses the special reorder version of SET OF to sort the attributes
7343 and reorder them to match the encoded order. This resolves a long
7344 standing problem: a verify on a PKCS7 structure just after signing
7345 it used to fail because the attribute order did not match the
7346 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
7347 it uses the received order. This is necessary to tolerate some broken
7348 software that does not order SET OF. This is handled by encoding
7349 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
7350 to produce the required SET OF.
7353 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
7354 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
7355 files to get correct declarations of the ASN.1 item variables.
7358 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
7359 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
7360 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
7361 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
7362 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
7363 ASN1_ITEM and no wrapper functions.
7366 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
7367 replace the old function pointer based I/O routines. Change most of
7368 the *_d2i_bio() and *_d2i_fp() functions to use these.
7371 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
7372 lines, recognice more "algorithms" that can be deselected, and make
7373 it complain about algorithm deselection that isn't recognised.
7376 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
7377 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
7378 to use new functions. Add NO_ASN1_OLD which can be set to remove
7379 some old style ASN1 functions: this can be used to determine if old
7380 code will still work when these eventually go away.
7383 *) New extension functions for OCSP structures, these follow the
7384 same conventions as certificates and CRLs.
7387 *) New function X509V3_add1_i2d(). This automatically encodes and
7388 adds an extension. Its behaviour can be customised with various
7389 flags to append, replace or delete. Various wrappers added for
7390 certifcates and CRLs.
7393 *) Fix to avoid calling the underlying ASN1 print routine when
7394 an extension cannot be parsed. Correct a typo in the
7395 OCSP_SERVICELOC extension. Tidy up print OCSP format.
7398 *) Make mkdef.pl parse some of the ASN1 macros and add appropriate
7399 entries for variables.
7402 *) Add functionality to apps/openssl.c for detecting locking
7403 problems: As the program is single-threaded, all we have
7404 to do is register a locking callback using an array for
7405 storing which locks are currently held by the program.
7408 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
7409 SSL_get_ex_data_X509_STORE_idx(), which is used in
7410 ssl_verify_cert_chain() and thus can be called at any time
7411 during TLS/SSL handshakes so that thread-safety is essential.
7412 Unfortunately, the ex_data design is not at all suited
7413 for multi-threaded use, so it probably should be abolished.
7416 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
7417 [Broadcom, tweaked and integrated by Geoff Thorpe]
7419 *) Move common extension printing code to new function
7420 X509V3_print_extensions(). Reorganise OCSP print routines and
7421 implement some needed OCSP ASN1 functions. Add OCSP extensions.
7424 *) New function X509_signature_print() to remove duplication in some
7428 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
7429 set (this was treated exactly the same as SET OF previously). This
7430 is used to reorder the STACK representing the structure to match the
7431 encoding. This will be used to get round a problem where a PKCS7
7432 structure which was signed could not be verified because the STACK
7433 order did not reflect the encoded order.
7436 *) Reimplement the OCSP ASN1 module using the new code.
7439 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
7440 for its ASN1 operations. The old style function pointers still exist
7441 for now but they will eventually go away.
7444 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
7445 completely replaces the old ASN1 functionality with a table driven
7446 encoder and decoder which interprets an ASN1_ITEM structure describing
7447 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
7448 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
7449 has also been converted to the new form.
7452 *) Change BN_mod_exp_recp so that negative moduli are tolerated
7453 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
7454 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
7455 for negative moduli.
7458 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
7459 of not touching the result's sign bit.
7462 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
7466 *) Changed the LHASH code to use prototypes for callbacks, and created
7467 macros to declare and implement thin (optionally static) functions
7468 that provide type-safety and avoid function pointer casting for the
7469 type-specific callbacks.
7472 *) Added Kerberos Cipher Suites to be used with TLS, as written in
7474 [Veers Staats <staatsvr@asc.hpc.mil>,
7475 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
7477 *) Reformat the FAQ so the different questions and answers can be divided
7478 in sections depending on the subject.
7481 *) Have the zlib compression code load ZLIB.DLL dynamically under
7485 *) New function BN_mod_sqrt for computing square roots modulo a prime
7486 (using the probabilistic Tonelli-Shanks algorithm unless
7487 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
7488 be handled deterministically).
7489 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
7491 *) Make BN_mod_inverse faster by explicitly handling small quotients
7492 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
7493 512 bits], about 30% for larger ones [1024 or 2048 bits].)
7496 *) New function BN_kronecker.
7499 *) Fix BN_gcd so that it works on negative inputs; the result is
7500 positive unless both parameters are zero.
7501 Previously something reasonably close to an infinite loop was
7502 possible because numbers could be growing instead of shrinking
7503 in the implementation of Euclid's algorithm.
7506 *) Fix BN_is_word() and BN_is_one() macros to take into account the
7507 sign of the number in question.
7509 Fix BN_is_word(a,w) to work correctly for w == 0.
7511 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
7512 because its test if the absolute value of 'a' equals 'w'.
7513 Note that BN_abs_is_word does *not* handle w == 0 reliably;
7514 it exists mostly for use in the implementations of BN_is_zero(),
7515 BN_is_one(), and BN_is_word().
7518 *) New function BN_swap.
7521 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
7522 the exponentiation functions are more likely to produce reasonable
7523 results on negative inputs.
7526 *) Change BN_mod_mul so that the result is always non-negative.
7527 Previously, it could be negative if one of the factors was negative;
7528 I don't think anyone really wanted that behaviour.
7531 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
7532 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
7533 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
7534 and add new functions:
7543 BN_mod_lshift1_quick
7547 These functions always generate non-negative results.
7549 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
7550 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
7552 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
7553 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
7554 be reduced modulo m.
7555 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
7558 The following entry accidentally appeared in the CHANGES file
7559 distributed with OpenSSL 0.9.7. The modifications described in
7560 it do *not* apply to OpenSSL 0.9.7.
7562 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
7563 was actually never needed) and in BN_mul(). The removal in BN_mul()
7564 required a small change in bn_mul_part_recursive() and the addition
7565 of the functions bn_cmp_part_words(), bn_sub_part_words() and
7566 bn_add_part_words(), which do the same thing as bn_cmp_words(),
7567 bn_sub_words() and bn_add_words() except they take arrays with
7572 *) In 'openssl passwd', verify passwords read from the terminal
7573 unless the '-salt' option is used (which usually means that
7574 verification would just waste user's time since the resulting
7575 hash is going to be compared with some given password hash)
7576 or the new '-noverify' option is used.
7578 This is an incompatible change, but it does not affect
7579 non-interactive use of 'openssl passwd' (passwords on the command
7580 line, '-stdin' option, '-in ...' option) and thus should not
7584 *) Remove all references to RSAref, since there's no more need for it.
7587 *) Make DSO load along a path given through an environment variable
7588 (SHLIB_PATH) with shl_load().
7591 *) Constify the ENGINE code as a result of BIGNUM constification.
7592 Also constify the RSA code and most things related to it. In a
7593 few places, most notable in the depth of the ASN.1 code, ugly
7594 casts back to non-const were required (to be solved at a later
7598 *) Make it so the openssl application has all engines loaded by default.
7601 *) Constify the BIGNUM routines a little more.
7604 *) Add the following functions:
7606 ENGINE_load_cswift()
7608 ENGINE_load_atalla()
7610 ENGINE_load_builtin_engines()
7612 That way, an application can itself choose if external engines that
7613 are built-in in OpenSSL shall ever be used or not. The benefit is
7614 that applications won't have to be linked with libdl or other dso
7615 libraries unless it's really needed.
7617 Changed 'openssl engine' to load all engines on demand.
7618 Changed the engine header files to avoid the duplication of some
7619 declarations (they differed!).
7622 *) 'openssl engine' can now list capabilities.
7625 *) Better error reporting in 'openssl engine'.
7628 *) Never call load_dh_param(NULL) in s_server.
7631 *) Add engine application. It can currently list engines by name and
7632 identity, and test if they are actually available.
7635 *) Improve RPM specification file by forcing symbolic linking and making
7636 sure the installed documentation is also owned by root.root.
7637 [Damien Miller <djm@mindrot.org>]
7639 *) Give the OpenSSL applications more possibilities to make use of
7640 keys (public as well as private) handled by engines.
7643 *) Add OCSP code that comes from CertCo.
7646 *) Add VMS support for the Rijndael code.
7649 *) Added untested support for Nuron crypto accelerator.
7652 *) Add support for external cryptographic devices. This code was
7653 previously distributed separately as the "engine" branch.
7654 [Geoff Thorpe, Richard Levitte]
7656 *) Rework the filename-translation in the DSO code. It is now possible to
7657 have far greater control over how a "name" is turned into a filename
7658 depending on the operating environment and any oddities about the
7659 different shared library filenames on each system.
7662 *) Support threads on FreeBSD-elf in Configure.
7665 *) Fix for SHA1 assembly problem with MASM: it produces
7666 warnings about corrupt line number information when assembling
7667 with debugging information. This is caused by the overlapping
7669 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
7672 NCONF_get_number() has no error checking at all. As a replacement,
7673 NCONF_get_number_e() is defined (_e for "error checking") and is
7674 promoted strongly. The old NCONF_get_number is kept around for
7675 binary backward compatibility.
7676 Make it possible for methods to load from something other than a BIO,
7677 by providing a function pointer that is given a name instead of a BIO.
7678 For example, this could be used to load configuration data from an
7682 *) Fix for non blocking accept BIOs. Added new I/O special reason
7683 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
7684 with non blocking I/O was not possible because no retry code was
7685 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
7689 *) Added the beginnings of Rijndael support.
7692 *) Fix for bug in DirectoryString mask setting. Add support for
7693 X509_NAME_print_ex() in 'req' and X509_print_ex() function
7694 to allow certificate printing to more controllable, additional
7695 'certopt' option to 'x509' to allow new printing options to be
7699 *) Clean old EAY MD5 hack from e_os.h.
7702 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
7704 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
7705 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
7706 [Joe Orton, Steve Henson]
7708 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
7710 *) Fix additional bug revealed by the NISCC test suite:
7712 Stop bug triggering large recursion when presented with
7713 certain ASN.1 tags (CVE-2003-0851)
7716 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
7718 *) Fix various bugs revealed by running the NISCC test suite:
7720 Stop out of bounds reads in the ASN1 code when presented with
7721 invalid tags (CVE-2003-0543 and CVE-2003-0544).
7723 If verify callback ignores invalid public key errors don't try to check
7724 certificate signature with the NULL public key.
7728 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
7729 if the server requested one: as stated in TLS 1.0 and SSL 3.0
7733 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
7734 extra data after the compression methods not only for TLS 1.0
7735 but also for SSL 3.0 (as required by the specification).
7736 [Bodo Moeller; problem pointed out by Matthias Loepfe]
7738 *) Change X509_certificate_type() to mark the key as exported/exportable
7739 when it's 512 *bits* long, not 512 bytes.
7742 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
7744 *) Countermeasure against the Klima-Pokorny-Rosa extension of
7745 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
7746 a protocol version number mismatch like a decryption error
7747 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
7750 *) Turn on RSA blinding by default in the default implementation
7751 to avoid a timing attack. Applications that don't want it can call
7752 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
7753 They would be ill-advised to do so in most cases.
7754 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
7756 *) Change RSA blinding code so that it works when the PRNG is not
7757 seeded (in this case, the secret RSA exponent is abused as
7758 an unpredictable seed -- if it is not unpredictable, there
7759 is no point in blinding anyway). Make RSA blinding thread-safe
7760 by remembering the creator's thread ID in rsa->blinding and
7761 having all other threads use local one-time blinding factors
7762 (this requires more computation than sharing rsa->blinding, but
7763 avoids excessive locking; and if an RSA object is not shared
7764 between threads, blinding will still be very fast).
7767 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
7769 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
7770 via timing by performing a MAC computation even if incorrrect
7771 block cipher padding has been found. This is a countermeasure
7772 against active attacks where the attacker has to distinguish
7773 between bad padding and a MAC verification error. (CVE-2003-0078)
7775 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
7776 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
7777 Martin Vuagnoux (EPFL, Ilion)]
7779 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
7781 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
7782 memory from it's contents. This is done with a counter that will
7783 place alternating values in each byte. This can be used to solve
7784 two issues: 1) the removal of calls to memset() by highly optimizing
7785 compilers, and 2) cleansing with other values than 0, since those can
7786 be read through on certain media, for example a swap space on disk.
7789 *) Bugfix: client side session caching did not work with external caching,
7790 because the session->cipher setting was not restored when reloading
7791 from the external cache. This problem was masked, when
7792 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
7793 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
7796 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
7797 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
7798 [Zeev Lieber <zeev-l@yahoo.com>]
7800 *) Undo an undocumented change introduced in 0.9.6e which caused
7801 repeated calls to OpenSSL_add_all_ciphers() and
7802 OpenSSL_add_all_digests() to be ignored, even after calling
7806 *) Change the default configuration reader to deal with last line not
7807 being properly terminated.
7810 *) Change X509_NAME_cmp() so it applies the special rules on handling
7811 DN values that are of type PrintableString, as well as RDNs of type
7812 emailAddress where the value has the type ia5String.
7813 [stefank@valicert.com via Richard Levitte]
7815 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
7816 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
7817 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
7818 the bitwise-OR of the two for use by the majority of applications
7819 wanting this behaviour, and update the docs. The documented
7820 behaviour and actual behaviour were inconsistent and had been
7821 changing anyway, so this is more a bug-fix than a behavioural
7823 [Geoff Thorpe, diagnosed by Nadav Har'El]
7825 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
7826 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
7829 *) Fix initialization code race conditions in
7830 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
7831 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
7832 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
7833 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
7834 ssl2_get_cipher_by_char(),
7835 ssl3_get_cipher_by_char().
7836 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
7838 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
7839 the cached sessions are flushed, as the remove_cb() might use ex_data
7840 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
7841 (see [openssl.org #212]).
7842 [Geoff Thorpe, Lutz Jaenicke]
7844 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
7845 length, instead of the encoding length to d2i_ASN1_OBJECT.
7848 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
7850 *) [In 0.9.6g-engine release:]
7851 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
7852 [Lynn Gazis <lgazis@rainbow.com>]
7854 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
7856 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
7857 and get fix the header length calculation.
7858 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
7859 Alon Kantor <alonk@checkpoint.com> (and others),
7862 *) Use proper error handling instead of 'assertions' in buffer
7863 overflow checks added in 0.9.6e. This prevents DoS (the
7864 assertions could call abort()).
7865 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
7867 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
7869 *) Add various sanity checks to asn1_get_length() to reject
7870 the ASN1 length bytes if they exceed sizeof(long), will appear
7871 negative or the content length exceeds the length of the
7873 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
7875 *) Fix cipher selection routines: ciphers without encryption had no flags
7876 for the cipher strength set and where therefore not handled correctly
7877 by the selection routines (PR #130).
7880 *) Fix EVP_dsa_sha macro.
7884 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
7885 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
7886 that was added in OpenSSL 0.9.6d.
7888 As the countermeasure turned out to be incompatible with some
7889 broken SSL implementations, the new option is part of SSL_OP_ALL.
7890 SSL_OP_ALL is usually employed when compatibility with weird SSL
7891 implementations is desired (e.g. '-bugs' option to 's_client' and
7892 's_server'), so the new option is automatically set in many
7896 *) Changes in security patch:
7898 Changes marked "(CHATS)" were sponsored by the Defense Advanced
7899 Research Projects Agency (DARPA) and Air Force Research Laboratory,
7900 Air Force Materiel Command, USAF, under agreement number
7903 *) Add various sanity checks to asn1_get_length() to reject
7904 the ASN1 length bytes if they exceed sizeof(long), will appear
7905 negative or the content length exceeds the length of the
7906 supplied buffer. (CVE-2002-0659)
7907 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
7909 *) Assertions for various potential buffer overflows, not known to
7911 [Ben Laurie (CHATS)]
7913 *) Various temporary buffers to hold ASCII versions of integers were
7914 too small for 64 bit platforms. (CVE-2002-0655)
7915 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
7917 *) Remote buffer overflow in SSL3 protocol - an attacker could
7918 supply an oversized session ID to a client. (CVE-2002-0656)
7919 [Ben Laurie (CHATS)]
7921 *) Remote buffer overflow in SSL2 protocol - an attacker could
7922 supply an oversized client master key. (CVE-2002-0656)
7923 [Ben Laurie (CHATS)]
7925 Changes between 0.9.6c and 0.9.6d [9 May 2002]
7927 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
7928 encoded as NULL) with id-dsa-with-sha1.
7929 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
7931 *) Check various X509_...() return values in apps/req.c.
7932 [Nils Larsch <nla@trustcenter.de>]
7934 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
7935 an end-of-file condition would erronously be flagged, when the CRLF
7936 was just at the end of a processed block. The bug was discovered when
7937 processing data through a buffering memory BIO handing the data to a
7938 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
7939 <ptsekov@syntrex.com> and Nedelcho Stanev.
7942 *) Implement a countermeasure against a vulnerability recently found
7943 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
7944 before application data chunks to avoid the use of known IVs
7945 with data potentially chosen by the attacker.
7948 *) Fix length checks in ssl3_get_client_hello().
7951 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
7952 to prevent ssl3_read_internal() from incorrectly assuming that
7953 ssl3_read_bytes() found application data while handshake
7954 processing was enabled when in fact s->s3->in_read_app_data was
7955 merely automatically cleared during the initial handshake.
7956 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
7958 *) Fix object definitions for Private and Enterprise: they were not
7959 recognized in their shortname (=lowercase) representation. Extend
7960 obj_dat.pl to issue an error when using undefined keywords instead
7961 of silently ignoring the problem (Svenning Sorensen
7962 <sss@sss.dnsalias.net>).
7965 *) Fix DH_generate_parameters() so that it works for 'non-standard'
7966 generators, i.e. generators other than 2 and 5. (Previously, the
7967 code did not properly initialise the 'add' and 'rem' values to
7968 BN_generate_prime().)
7970 In the new general case, we do not insist that 'generator' is
7971 actually a primitive root: This requirement is rather pointless;
7972 a generator of the order-q subgroup is just as good, if not
7976 *) Map new X509 verification errors to alerts. Discovered and submitted by
7977 Tom Wu <tom@arcot.com>.
7980 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
7981 returning non-zero before the data has been completely received
7982 when using non-blocking I/O.
7983 [Bodo Moeller; problem pointed out by John Hughes]
7985 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
7986 [Ben Laurie, Lutz Jaenicke]
7988 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
7989 Yoram Zahavi <YoramZ@gilian.com>).
7992 *) Add information about CygWin 1.3 and on, and preserve proper
7993 configuration for the versions before that.
7994 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
7996 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
7997 check whether we deal with a copy of a session and do not delete from
7998 the cache in this case. Problem reported by "Izhar Shoshani Levi"
7999 <izhar@checkpoint.com>.
8002 *) Do not store session data into the internal session cache, if it
8003 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
8004 flag is set). Proposed by Aslam <aslam@funk.com>.
8007 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
8011 *) [In 0.9.6d-engine release:]
8012 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
8013 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
8015 *) Add the configuration target linux-s390x.
8016 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
8018 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
8019 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
8020 variable as an indication that a ClientHello message has been
8021 received. As the flag value will be lost between multiple
8022 invocations of ssl3_accept when using non-blocking I/O, the
8023 function may not be aware that a handshake has actually taken
8024 place, thus preventing a new session from being added to the
8027 To avoid this problem, we now set s->new_session to 2 instead of
8028 using a local variable.
8029 [Lutz Jaenicke, Bodo Moeller]
8031 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
8032 if the SSL_R_LENGTH_MISMATCH error is detected.
8033 [Geoff Thorpe, Bodo Moeller]
8035 *) New 'shared_ldflag' column in Configure platform table.
8038 *) Fix EVP_CIPHER_mode macro.
8039 ["Dan S. Camper" <dan@bti.net>]
8041 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
8042 type, we must throw them away by setting rr->length to 0.
8043 [D P Chang <dpc@qualys.com>]
8045 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
8047 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
8048 <Dominikus.Scherkl@biodata.com>. (The previous implementation
8049 worked incorrectly for those cases where range = 10..._2 and
8050 3*range is two bits longer than range.)
8053 *) Only add signing time to PKCS7 structures if it is not already
8057 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
8058 OBJ_ld_ce should be OBJ_id_ce.
8059 Also some ip-pda OIDs in crypto/objects/objects.txt were
8060 incorrect (cf. RFC 3039).
8061 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
8063 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
8064 returns early because it has nothing to do.
8065 [Andy Schneider <andy.schneider@bjss.co.uk>]
8067 *) [In 0.9.6c-engine release:]
8068 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
8069 [Andy Schneider <andy.schneider@bjss.co.uk>]
8071 *) [In 0.9.6c-engine release:]
8072 Add support for Cryptographic Appliance's keyserver technology.
8073 (Use engine 'keyclient')
8074 [Cryptographic Appliances and Geoff Thorpe]
8076 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
8077 is called via tools/c89.sh because arguments have to be
8078 rearranged (all '-L' options must appear before the first object
8080 [Richard Shapiro <rshapiro@abinitio.com>]
8082 *) [In 0.9.6c-engine release:]
8083 Add support for Broadcom crypto accelerator cards, backported
8085 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
8087 *) [In 0.9.6c-engine release:]
8088 Add support for SureWare crypto accelerator cards from
8089 Baltimore Technologies. (Use engine 'sureware')
8090 [Baltimore Technologies and Mark Cox]
8092 *) [In 0.9.6c-engine release:]
8093 Add support for crypto accelerator cards from Accelerated
8094 Encryption Processing, www.aep.ie. (Use engine 'aep')
8095 [AEP Inc. and Mark Cox]
8097 *) Add a configuration entry for gcc on UnixWare.
8098 [Gary Benson <gbenson@redhat.com>]
8100 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
8101 messages are stored in a single piece (fixed-length part and
8102 variable-length part combined) and fix various bugs found on the way.
8105 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
8106 instead. BIO_gethostbyname() does not know what timeouts are
8107 appropriate, so entries would stay in cache even when they have
8109 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
8111 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
8112 faced with a pathologically small ClientHello fragment that does
8113 not contain client_version: Instead of aborting with an error,
8114 simply choose the highest available protocol version (i.e.,
8115 TLS 1.0 unless it is disabled). In practice, ClientHello
8116 messages are never sent like this, but this change gives us
8117 strictly correct behaviour at least for TLS.
8120 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
8121 never resets s->method to s->ctx->method when called from within
8122 one of the SSL handshake functions.
8123 [Bodo Moeller; problem pointed out by Niko Baric]
8125 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
8126 (sent using the client's version number) if client_version is
8127 smaller than the protocol version in use. Also change
8128 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
8129 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
8130 the client will at least see that alert.
8133 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
8137 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
8138 client receives HelloRequest while in a handshake.
8139 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
8141 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
8142 should end in 'break', not 'goto end' which circumvents various
8143 cleanups done in state SSL_ST_OK. But session related stuff
8144 must be disabled for SSL_ST_OK in the case that we just sent a
8147 Also avoid some overhead by not calling ssl_init_wbio_buffer()
8148 before just sending a HelloRequest.
8149 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
8151 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
8152 reveal whether illegal block cipher padding was found or a MAC
8153 verification error occurred. (Neither SSLerr() codes nor alerts
8154 are directly visible to potential attackers, but the information
8155 may leak via logfiles.)
8157 Similar changes are not required for the SSL 2.0 implementation
8158 because the number of padding bytes is sent in clear for SSL 2.0,
8159 and the extra bytes are just ignored. However ssl/s2_pkt.c
8160 failed to verify that the purported number of padding bytes is in
8164 *) Add OpenUNIX-8 support including shared libraries
8165 (Boyd Lynn Gerber <gerberb@zenez.com>).
8168 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
8169 'wristwatch attack' using huge encoding parameters (cf.
8170 James H. Manger's CRYPTO 2001 paper). Note that the
8171 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
8172 encoding parameters and hence was not vulnerable.
8175 *) BN_sqr() bug fix.
8176 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
8178 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
8179 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
8180 followed by modular reduction.
8181 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
8183 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
8184 equivalent based on BN_pseudo_rand() instead of BN_rand().
8187 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
8188 This function was broken, as the check for a new client hello message
8189 to handle SGC did not allow these large messages.
8190 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
8193 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
8196 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
8197 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
8200 *) Rework the configuration and shared library support for Tru64 Unix.
8201 The configuration part makes use of modern compiler features and
8202 still retains old compiler behavior for those that run older versions
8203 of the OS. The shared library support part includes a variant that
8204 uses the RPATH feature, and is available through the special
8205 configuration target "alpha-cc-rpath", which will never be selected
8207 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
8209 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
8210 with the same message size as in ssl3_get_certificate_request().
8211 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
8212 messages might inadvertently be reject as too long.
8213 [Petr Lampa <lampa@fee.vutbr.cz>]
8215 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
8218 *) Modified SSL library such that the verify_callback that has been set
8219 specificly for an SSL object with SSL_set_verify() is actually being
8220 used. Before the change, a verify_callback set with this function was
8221 ignored and the verify_callback() set in the SSL_CTX at the time of
8222 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
8223 to allow the necessary settings.
8226 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
8227 explicitly to NULL, as at least on Solaris 8 this seems not always to be
8228 done automatically (in contradiction to the requirements of the C
8229 standard). This made problems when used from OpenSSH.
8232 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
8233 dh->length and always used
8235 BN_rand_range(priv_key, dh->p).
8237 BN_rand_range() is not necessary for Diffie-Hellman, and this
8238 specific range makes Diffie-Hellman unnecessarily inefficient if
8239 dh->length (recommended exponent length) is much smaller than the
8240 length of dh->p. We could use BN_rand_range() if the order of
8241 the subgroup was stored in the DH structure, but we only have
8246 BN_rand(priv_key, l, ...)
8248 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
8254 RSA_eay_public_encrypt
8255 RSA_eay_private_decrypt
8256 RSA_eay_private_encrypt (signing)
8257 RSA_eay_public_decrypt (signature verification)
8259 (default implementations for RSA_public_encrypt,
8260 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
8261 always reject numbers >= n.
8264 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
8265 to synchronize access to 'locking_thread'. This is necessary on
8266 systems where access to 'locking_thread' (an 'unsigned long'
8267 variable) is not atomic.
8270 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
8271 *before* setting the 'crypto_lock_rand' flag. The previous code had
8272 a race condition if 0 is a valid thread ID.
8273 [Travis Vitek <vitek@roguewave.com>]
8275 *) Add support for shared libraries under Irix.
8276 [Albert Chin-A-Young <china@thewrittenword.com>]
8278 *) Add configuration option to build on Linux on both big-endian and
8280 [Ralf Baechle <ralf@uni-koblenz.de>]
8282 *) Add the possibility to create shared libraries on HP-UX.
8285 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
8287 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
8288 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
8289 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
8290 PRNG state recovery was possible based on the output of
8291 one PRNG request appropriately sized to gain knowledge on
8292 'md' followed by enough consecutive 1-byte PRNG requests
8293 to traverse all of 'state'.
8295 1. When updating 'md_local' (the current thread's copy of 'md')
8296 during PRNG output generation, hash all of the previous
8297 'md_local' value, not just the half used for PRNG output.
8299 2. Make the number of bytes from 'state' included into the hash
8300 independent from the number of PRNG bytes requested.
8302 The first measure alone would be sufficient to avoid
8303 Markku-Juhani's attack. (Actually it had never occurred
8304 to me that the half of 'md_local' used for chaining was the
8305 half from which PRNG output bytes were taken -- I had always
8306 assumed that the secret half would be used.) The second
8307 measure makes sure that additional data from 'state' is never
8308 mixed into 'md_local' in small portions; this heuristically
8309 further strengthens the PRNG.
8312 *) Fix crypto/bn/asm/mips3.s.
8315 *) When only the key is given to "enc", the IV is undefined. Print out
8316 an error message in this case.
8319 *) Handle special case when X509_NAME is empty in X509 printing routines.
8322 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
8323 positive and less than q.
8326 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
8327 used: it isn't thread safe and the add_lock_callback should handle
8329 [Paul Rose <Paul.Rose@bridge.com>]
8331 *) Verify that incoming data obeys the block size in
8332 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
8336 [Ulf Möller, Bodo Möller]
8338 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
8339 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
8340 when fixing the server behaviour for backwards-compatible 'client
8341 hello' messages. (Note that the attack is impractical against
8342 SSL 3.0 and TLS 1.0 anyway because length and version checking
8343 means that the probability of guessing a valid ciphertext is
8344 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
8347 Before 0.9.5, the countermeasure (hide the error by generating a
8348 random 'decryption result') did not work properly because
8349 ERR_clear_error() was missing, meaning that SSL_get_error() would
8350 detect the supposedly ignored error.
8352 Both problems are now fixed.
8355 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
8356 (previously it was 1024).
8359 *) Fix for compatibility mode trust settings: ignore trust settings
8360 unless some valid trust or reject settings are present.
8363 *) Fix for blowfish EVP: its a variable length cipher.
8366 *) Fix various bugs related to DSA S/MIME verification. Handle missing
8367 parameters in DSA public key structures and return an error in the
8368 DSA routines if parameters are absent.
8371 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
8372 in the current directory if neither $RANDFILE nor $HOME was set.
8373 RAND_file_name() in 0.9.6a returned NULL in this case. This has
8374 caused some confusion to Windows users who haven't defined $HOME.
8375 Thus RAND_file_name() is changed again: e_os.h can define a
8376 DEFAULT_HOME, which will be used if $HOME is not set.
8377 For Windows, we use "C:"; on other platforms, we still require
8378 environment variables.
8380 *) Move 'if (!initialized) RAND_poll()' into regions protected by
8381 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
8382 having multiple threads call RAND_poll() concurrently.
8385 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
8386 combination of a flag and a thread ID variable.
8387 Otherwise while one thread is in ssleay_rand_bytes (which sets the
8388 flag), *other* threads can enter ssleay_add_bytes without obeying
8389 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
8390 that they do not hold after the first thread unsets add_do_not_lock).
8393 *) Change bctest again: '-x' expressions are not available in all
8397 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
8399 *) Fix a couple of memory leaks in PKCS7_dataDecode()
8400 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
8402 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
8403 the default extension for executables, if any. Also, make the perl
8404 scripts that use symlink() to test if it really exists and use "cp"
8405 if it doesn't. All this made OpenSSL compilable and installable in
8409 *) Fix for asn1_GetSequence() for indefinite length constructed data.
8410 If SEQUENCE is length is indefinite just set c->slen to the total
8411 amount of data available.
8412 [Steve Henson, reported by shige@FreeBSD.org]
8413 [This change does not apply to 0.9.7.]
8415 *) Change bctest to avoid here-documents inside command substitution
8416 (workaround for FreeBSD /bin/sh bug).
8417 For compatibility with Ultrix, avoid shell functions (introduced
8418 in the bctest version that searches along $PATH).
8421 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
8422 with des_encrypt() defined on some operating systems, like Solaris
8426 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
8427 On the Importance of Eliminating Errors in Cryptographic
8428 Computations, J. Cryptology 14 (2001) 2, 101-119,
8429 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
8432 *) MIPS assembler BIGNUM division bug fix.
8435 *) Disabled incorrect Alpha assembler code.
8438 *) Fix PKCS#7 decode routines so they correctly update the length
8439 after reading an EOC for the EXPLICIT tag.
8441 [This change does not apply to 0.9.7.]
8443 *) Fix bug in PKCS#12 key generation routines. This was triggered
8444 if a 3DES key was generated with a 0 initial byte. Include
8445 PKCS12_BROKEN_KEYGEN compilation option to retain the old
8446 (but broken) behaviour.
8449 *) Enhance bctest to search for a working bc along $PATH and print
8451 [Tim Rice <tim@multitalents.net> via Richard Levitte]
8453 *) Fix memory leaks in err.c: free err_data string if necessary;
8454 don't write to the wrong index in ERR_set_error_data.
8457 *) Implement ssl23_peek (analogous to ssl23_read), which previously
8461 *) Replace rdtsc with _emit statements for VC++ version 5.
8462 [Jeremy Cooper <jeremy@baymoo.org>]
8464 *) Make it possible to reuse SSLv2 sessions.
8467 *) In copy_email() check for >= 0 as a return value for
8468 X509_NAME_get_index_by_NID() since 0 is a valid index.
8469 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
8471 *) Avoid coredump with unsupported or invalid public keys by checking if
8472 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
8473 PKCS7_verify() fails with non detached data.
8476 *) Don't use getenv in library functions when run as setuid/setgid.
8477 New function OPENSSL_issetugid().
8480 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
8481 due to incorrect handling of multi-threading:
8483 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
8485 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
8487 3. Count how many times MemCheck_off() has been called so that
8488 nested use can be treated correctly. This also avoids
8489 inband-signalling in the previous code (which relied on the
8490 assumption that thread ID 0 is impossible).
8493 *) Add "-rand" option also to s_client and s_server.
8496 *) Fix CPU detection on Irix 6.x.
8497 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
8498 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
8500 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
8503 [This change does not apply to 0.9.7.]
8505 *) Use the cached encoding of an X509_NAME structure rather than
8506 copying it. This is apparently the reason for the libsafe "errors"
8507 but the code is actually correct.
8510 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
8511 Bleichenbacher's DSA attack.
8512 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
8513 to be set and top=0 forces the highest bit to be set; top=-1 is new
8514 and leaves the highest bit random.
8515 [Ulf Moeller, Bodo Moeller]
8517 *) In the NCONF_...-based implementations for CONF_... queries
8518 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
8519 a temporary CONF structure with the data component set to NULL
8520 (which gives segmentation faults in lh_retrieve).
8521 Instead, use NULL for the CONF pointer in CONF_get_string and
8522 CONF_get_number (which may use environment variables) and directly
8523 return NULL from CONF_get_section.
8526 *) Fix potential buffer overrun for EBCDIC.
8529 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
8530 keyUsage if basicConstraints absent for a CA.
8533 *) Make SMIME_write_PKCS7() write mail header values with a format that
8534 is more generally accepted (no spaces before the semicolon), since
8535 some programs can't parse those values properly otherwise. Also make
8536 sure BIO's that break lines after each write do not create invalid
8540 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
8541 macros previously used would not encode an empty SEQUENCE OF
8542 and break the signature.
8544 [This change does not apply to 0.9.7.]
8546 *) Zero the premaster secret after deriving the master secret in
8550 *) Add some EVP_add_digest_alias registrations (as found in
8551 OpenSSL_add_all_digests()) to SSL_library_init()
8552 aka OpenSSL_add_ssl_algorithms(). This provides improved
8553 compatibility with peers using X.509 certificates
8554 with unconventional AlgorithmIdentifier OIDs.
8557 *) Fix for Irix with NO_ASM.
8558 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
8560 *) ./config script fixes.
8561 [Ulf Moeller, Richard Levitte]
8563 *) Fix 'openssl passwd -1'.
8566 *) Change PKCS12_key_gen_asc() so it can cope with non null
8567 terminated strings whose length is passed in the passlen
8568 parameter, for example from PEM callbacks. This was done
8569 by adding an extra length parameter to asc2uni().
8570 [Steve Henson, reported by <oddissey@samsung.co.kr>]
8572 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
8573 call failed, free the DSA structure.
8576 *) Fix to uni2asc() to cope with zero length Unicode strings.
8577 These are present in some PKCS#12 files.
8580 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
8581 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
8582 when writing a 32767 byte record.
8583 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
8585 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
8586 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
8588 (RSA objects have a reference count access to which is protected
8589 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
8590 so they are meant to be shared between threads.)
8591 [Bodo Moeller, Geoff Thorpe; original patch submitted by
8592 "Reddie, Steven" <Steven.Reddie@ca.com>]
8594 *) Fix a deadlock in CRYPTO_mem_leaks().
8597 *) Use better test patterns in bntest.
8600 *) rand_win.c fix for Borland C.
8603 *) BN_rshift bugfix for n == 0.
8606 *) Add a 'bctest' script that checks for some known 'bc' bugs
8607 so that 'make test' does not abort just because 'bc' is broken.
8610 *) Store verify_result within SSL_SESSION also for client side to
8611 avoid potential security hole. (Re-used sessions on the client side
8612 always resulted in verify_result==X509_V_OK, not using the original
8613 result of the server certificate verification.)
8616 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
8617 SSL3_RT_APPLICATION_DATA, return 0.
8618 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
8622 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
8623 releases, have been re-implemented by renaming the previous
8624 implementations of ssl2_read and ssl3_read to ssl2_read_internal
8625 and ssl3_read_internal, respectively, and adding 'peek' parameters
8626 to them. The new ssl[23]_{read,peek} functions are calls to
8627 ssl[23]_read_internal with the 'peek' flag set appropriately.
8628 A 'peek' parameter has also been added to ssl3_read_bytes, which
8629 does the actual work for ssl3_read_internal.
8632 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
8633 the method-specific "init()" handler. Also clean up ex_data after
8634 calling the method-specific "finish()" handler. Previously, this was
8635 happening the other way round.
8638 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
8639 The previous value, 12, was not always sufficient for BN_mod_exp().
8642 *) Make sure that shared libraries get the internal name engine with
8643 the full version number and not just 0. This should mark the
8644 shared libraries as not backward compatible. Of course, this should
8645 be changed again when we can guarantee backward binary compatibility.
8648 *) Fix typo in get_cert_by_subject() in by_dir.c
8649 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
8651 *) Rework the system to generate shared libraries:
8653 - Make note of the expected extension for the shared libraries and
8654 if there is a need for symbolic links from for example libcrypto.so.0
8655 to libcrypto.so.0.9.7. There is extended info in Configure for
8658 - Make as few rebuilds of the shared libraries as possible.
8660 - Still avoid linking the OpenSSL programs with the shared libraries.
8662 - When installing, install the shared libraries separately from the
8666 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
8668 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
8669 and not in SSL_clear because the latter is also used by the
8670 accept/connect functions; previously, the settings made by
8671 SSL_set_read_ahead would be lost during the handshake.
8672 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
8674 *) Correct util/mkdef.pl to be selective about disabled algorithms.
8675 Previously, it would create entries for disabled algorithms no
8679 *) Added several new manual pages for SSL_* function.
8682 Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
8684 *) In ssl23_get_client_hello, generate an error message when faced
8685 with an initial SSL 3.0/TLS record that is too small to contain the
8686 first two bytes of the ClientHello message, i.e. client_version.
8687 (Note that this is a pathologic case that probably has never happened
8688 in real life.) The previous approach was to use the version number
8689 from the record header as a substitute; but our protocol choice
8690 should not depend on that one because it is not authenticated
8691 by the Finished messages.
8694 *) More robust randomness gathering functions for Windows.
8695 [Jeffrey Altman <jaltman@columbia.edu>]
8697 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
8698 not set then we don't setup the error code for issuer check errors
8699 to avoid possibly overwriting other errors which the callback does
8700 handle. If an application does set the flag then we assume it knows
8701 what it is doing and can handle the new informational codes
8705 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
8706 a general "ANY" type, as such it should be able to decode anything
8707 including tagged types. However it didn't check the class so it would
8708 wrongly interpret tagged types in the same way as their universal
8709 counterpart and unknown types were just rejected. Changed so that the
8710 tagged and unknown types are handled in the same way as a SEQUENCE:
8711 that is the encoding is stored intact. There is also a new type
8712 "V_ASN1_OTHER" which is used when the class is not universal, in this
8713 case we have no idea what the actual type is so we just lump them all
8717 *) On VMS, stdout may very well lead to a file that is written to
8718 in a record-oriented fashion. That means that every write() will
8719 write a separate record, which will be read separately by the
8720 programs trying to read from it. This can be very confusing.
8722 The solution is to put a BIO filter in the way that will buffer
8723 text until a linefeed is reached, and then write everything a
8724 line at a time, so every record written will be an actual line,
8725 not chunks of lines and not (usually doesn't happen, but I've
8726 seen it once) several lines in one record. BIO_f_linebuffer() is
8729 Currently, it's a VMS-only method, because that's where it has
8730 been tested well enough.
8733 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
8734 it can return incorrect results.
8735 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
8736 but it was in 0.9.6-beta[12].)
8739 *) Disable the check for content being present when verifying detached
8740 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
8741 include zero length content when signing messages.
8744 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
8745 BIO_ctrl (for BIO pairs).
8748 *) Add DSO method for VMS.
8751 *) Bug fix: Montgomery multiplication could produce results with the
8755 *) Add RPM specification openssl.spec and modify it to build three
8756 packages. The default package contains applications, application
8757 documentation and run-time libraries. The devel package contains
8758 include files, static libraries and function documentation. The
8759 doc package contains the contents of the doc directory. The original
8760 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
8763 *) Add a large number of documentation files for many SSL routines.
8764 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
8766 *) Add a configuration entry for Sony News 4.
8767 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
8769 *) Don't set the two most significant bits to one when generating a
8770 random number < q in the DSA library.
8773 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
8774 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
8775 the underlying transport is blocking) if a handshake took place.
8776 (The default behaviour is needed by applications such as s_client
8777 and s_server that use select() to determine when to use SSL_read;
8778 but for applications that know in advance when to expect data, it
8779 just makes things more complicated.)
8782 *) Add RAND_egd_bytes(), which gives control over the number of bytes read
8786 *) Add a few more EBCDIC conditionals that make `req' and `x509'
8787 work better on such systems.
8788 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
8790 *) Add two demo programs for PKCS12_parse() and PKCS12_create().
8791 Update PKCS12_parse() so it copies the friendlyName and the
8792 keyid to the certificates aux info.
8795 *) Fix bug in PKCS7_verify() which caused an infinite loop
8796 if there was more than one signature.
8797 [Sven Uszpelkat <su@celocom.de>]
8799 *) Major change in util/mkdef.pl to include extra information
8800 about each symbol, as well as presenting variables as well
8801 as functions. This change means that there's n more need
8802 to rebuild the .num files when some algorithms are excluded.
8805 *) Allow the verify time to be set by an application,
8806 rather than always using the current time.
8809 *) Phase 2 verify code reorganisation. The certificate
8810 verify code now looks up an issuer certificate by a
8811 number of criteria: subject name, authority key id
8812 and key usage. It also verifies self signed certificates
8813 by the same criteria. The main comparison function is
8814 X509_check_issued() which performs these checks.
8816 Lot of changes were necessary in order to support this
8817 without completely rewriting the lookup code.
8819 Authority and subject key identifier are now cached.
8821 The LHASH 'certs' is X509_STORE has now been replaced
8822 by a STACK_OF(X509_OBJECT). This is mainly because an
8823 LHASH can't store or retrieve multiple objects with
8824 the same hash value.
8826 As a result various functions (which were all internal
8827 use only) have changed to handle the new X509_STORE
8828 structure. This will break anything that messed round
8829 with X509_STORE internally.
8831 The functions X509_STORE_add_cert() now checks for an
8832 exact match, rather than just subject name.
8834 The X509_STORE API doesn't directly support the retrieval
8835 of multiple certificates matching a given criteria, however
8836 this can be worked round by performing a lookup first
8837 (which will fill the cache with candidate certificates)
8838 and then examining the cache for matches. This is probably
8839 the best we can do without throwing out X509_LOOKUP
8840 entirely (maybe later...).
8842 The X509_VERIFY_CTX structure has been enhanced considerably.
8844 All certificate lookup operations now go via a get_issuer()
8845 callback. Although this currently uses an X509_STORE it
8846 can be replaced by custom lookups. This is a simple way
8847 to bypass the X509_STORE hackery necessary to make this
8848 work and makes it possible to use more efficient techniques
8849 in future. A very simple version which uses a simple
8850 STACK for its trusted certificate store is also provided
8851 using X509_STORE_CTX_trusted_stack().
8853 The verify_cb() and verify() callbacks now have equivalents
8854 in the X509_STORE_CTX structure.
8856 X509_STORE_CTX also has a 'flags' field which can be used
8857 to customise the verify behaviour.
8860 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
8861 excludes S/MIME capabilities.
8864 *) When a certificate request is read in keep a copy of the
8865 original encoding of the signed data and use it when outputing
8866 again. Signatures then use the original encoding rather than
8867 a decoded, encoded version which may cause problems if the
8868 request is improperly encoded.
8871 *) For consistency with other BIO_puts implementations, call
8872 buffer_write(b, ...) directly in buffer_puts instead of calling
8875 In BIO_puts, increment b->num_write as in BIO_write.
8876 [Peter.Sylvester@EdelWeb.fr]
8878 *) Fix BN_mul_word for the case where the word is 0. (We have to use
8879 BN_zero, we may not return a BIGNUM with an array consisting of
8883 *) Avoid calling abort() from within the library when problems are
8884 detected, except if preprocessor symbols have been defined
8885 (such as REF_CHECK, BN_DEBUG etc.).
8888 *) New openssl application 'rsautl'. This utility can be
8889 used for low level RSA operations. DER public key
8890 BIO/fp routines also added.
8893 *) New Configure entry and patches for compiling on QNX 4.
8894 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
8896 *) A demo state-machine implementation was sponsored by
8897 Nuron (http://www.nuron.com/) and is now available in
8898 demos/state_machine.
8901 *) New options added to the 'dgst' utility for signature
8902 generation and verification.
8905 *) Unrecognized PKCS#7 content types are now handled via a
8906 catch all ASN1_TYPE structure. This allows unsupported
8907 types to be stored as a "blob" and an application can
8908 encode and decode it manually.
8911 *) Fix various signed/unsigned issues to make a_strex.c
8913 [Oscar Jacobsson <oscar.jacobsson@celocom.com>]
8915 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
8916 length if passed a buffer. ASN1_INTEGER_to_BN failed
8917 if passed a NULL BN and its argument was negative.
8918 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
8920 *) Modification to PKCS#7 encoding routines to output definite
8921 length encoding. Since currently the whole structures are in
8922 memory there's not real point in using indefinite length
8923 constructed encoding. However if OpenSSL is compiled with
8924 the flag PKCS7_INDEFINITE_ENCODING the old form is used.
8927 *) Added BIO_vprintf() and BIO_vsnprintf().
8930 *) Added more prefixes to parse for in the the strings written
8931 through a logging bio, to cover all the levels that are available
8932 through syslog. The prefixes are now:
8934 PANIC, EMERG, EMR => LOG_EMERG
8935 ALERT, ALR => LOG_ALERT
8936 CRIT, CRI => LOG_CRIT
8937 ERROR, ERR => LOG_ERR
8938 WARNING, WARN, WAR => LOG_WARNING
8939 NOTICE, NOTE, NOT => LOG_NOTICE
8940 INFO, INF => LOG_INFO
8941 DEBUG, DBG => LOG_DEBUG
8943 and as before, if none of those prefixes are present at the
8944 beginning of the string, LOG_ERR is chosen.
8946 On Win32, the LOG_* levels are mapped according to this:
8948 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
8949 LOG_WARNING => EVENTLOG_WARNING_TYPE
8950 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
8954 *) Made it possible to reconfigure with just the configuration
8955 argument "reconf" or "reconfigure". The command line arguments
8956 are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
8957 and are retrieved from there when reconfiguring.
8961 [Assar Westerlund <assar@sics.se>, Richard Levitte]
8963 *) Add the arguments -CAfile and -CApath to the pkcs12 utility.
8966 *) The obj_dat.pl script was messing up the sorting of object
8967 names. The reason was that it compared the quoted version
8968 of strings as a result "OCSP" > "OCSP Signing" because
8969 " > SPACE. Changed script to store unquoted versions of
8970 names and add quotes on output. It was also omitting some
8971 names from the lookup table if they were given a default
8972 value (that is if SN is missing it is given the same
8973 value as LN and vice versa), these are now added on the
8974 grounds that if an object has a name we should be able to
8975 look it up. Finally added warning output when duplicate
8976 short or long names are found.
8979 *) Changes needed for Tandem NSK.
8980 [Scott Uroff <scott@xypro.com>]
8982 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
8983 RSA_padding_check_SSLv23(), special padding was never detected
8984 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
8985 version rollback attacks was not effective.
8987 In s23_clnt.c, don't use special rollback-attack detection padding
8988 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
8989 client; similarly, in s23_srvr.c, don't do the rollback check if
8990 SSL 2.0 is the only protocol enabled in the server.
8993 *) Make it possible to get hexdumps of unprintable data with 'openssl
8994 asn1parse'. By implication, the functions ASN1_parse_dump() and
8995 BIO_dump_indent() are added.
8998 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
8999 these print out strings and name structures based on various
9000 flags including RFC2253 support and proper handling of
9001 multibyte characters. Added options to the 'x509' utility
9002 to allow the various flags to be set.
9005 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
9006 Also change the functions X509_cmp_current_time() and
9007 X509_gmtime_adj() work with an ASN1_TIME structure,
9008 this will enable certificates using GeneralizedTime in validity
9009 dates to be checked.
9012 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid
9013 negative public key encodings) on by default,
9014 NO_NEG_PUBKEY_BUG can be set to disable it.
9017 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
9018 content octets. An i2c_ASN1_OBJECT is unnecessary because
9019 the encoding can be trivially obtained from the structure.
9022 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
9023 not read locks (CRYPTO_r_[un]lock).
9026 *) A first attempt at creating official support for shared
9027 libraries through configuration. I've kept it so the
9028 default is static libraries only, and the OpenSSL programs
9029 are always statically linked for now, but there are
9030 preparations for dynamic linking in place.
9031 This has been tested on Linux and Tru64.
9034 *) Randomness polling function for Win9x, as described in:
9035 Peter Gutmann, Software Generation of Practically Strong
9039 *) Fix so PRNG is seeded in req if using an already existing
9043 *) New options to smime application. -inform and -outform
9044 allow alternative formats for the S/MIME message including
9045 PEM and DER. The -content option allows the content to be
9046 specified separately. This should allow things like Netscape
9047 form signing output easier to verify.
9050 *) Fix the ASN1 encoding of tags using the 'long form'.
9053 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
9054 STRING types. These convert content octets to and from the
9055 underlying type. The actual tag and length octets are
9056 already assumed to have been read in and checked. These
9057 are needed because all other string types have virtually
9058 identical handling apart from the tag. By having versions
9059 of the ASN1 functions that just operate on content octets
9060 IMPLICIT tagging can be handled properly. It also allows
9061 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
9062 and ASN1_INTEGER are identical apart from the tag.
9065 *) Change the handling of OID objects as follows:
9067 - New object identifiers are inserted in objects.txt, following
9068 the syntax given in objects.README.
9069 - objects.pl is used to process obj_mac.num and create a new
9071 - obj_dat.pl is used to create a new obj_dat.h, using the data in
9074 This is currently kind of a hack, and the perl code in objects.pl
9075 isn't very elegant, but it works as I intended. The simplest way
9076 to check that it worked correctly is to look in obj_dat.h and
9077 check the array nid_objs and make sure the objects haven't moved
9078 around (this is important!). Additions are OK, as well as
9079 consistent name changes.
9082 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
9085 *) Addition of the command line parameter '-rand file' to 'openssl req'.
9086 The given file adds to whatever has already been seeded into the
9087 random pool through the RANDFILE configuration file option or
9088 environment variable, or the default random state file.
9091 *) mkstack.pl now sorts each macro group into lexical order.
9092 Previously the output order depended on the order the files
9093 appeared in the directory, resulting in needless rewriting
9097 *) Patches to make OpenSSL compile under Win32 again. Mostly
9098 work arounds for the VC++ problem that it treats func() as
9099 func(void). Also stripped out the parts of mkdef.pl that
9100 added extra typesafe functions: these no longer exist.
9103 *) Reorganisation of the stack code. The macros are now all
9104 collected in safestack.h . Each macro is defined in terms of
9105 a "stack macro" of the form SKM_<name>(type, a, b). The
9106 DEBUG_SAFESTACK is now handled in terms of function casts,
9107 this has the advantage of retaining type safety without the
9108 use of additional functions. If DEBUG_SAFESTACK is not defined
9109 then the non typesafe macros are used instead. Also modified the
9110 mkstack.pl script to handle the new form. Needs testing to see
9111 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
9112 the default if no major problems. Similar behaviour for ASN1_SET_OF
9113 and PKCS12_STACK_OF.
9116 *) When some versions of IIS use the 'NET' form of private key the
9117 key derivation algorithm is different. Normally MD5(password) is
9118 used as a 128 bit RC4 key. In the modified case
9119 MD5(MD5(password) + "SGCKEYSALT") is used instead. Added some
9120 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
9121 as the old Netscape_RSA functions except they have an additional
9122 'sgckey' parameter which uses the modified algorithm. Also added
9123 an -sgckey command line option to the rsa utility. Thanks to
9124 Adrian Peck <bertie@ncipher.com> for posting details of the modified
9125 algorithm to openssl-dev.
9128 *) The evp_local.h macros were using 'c.##kname' which resulted in
9129 invalid expansion on some systems (SCO 5.0.5 for example).
9130 Corrected to 'c.kname'.
9131 [Phillip Porch <root@theporch.com>]
9133 *) New X509_get1_email() and X509_REQ_get1_email() functions that return
9134 a STACK of email addresses from a certificate or request, these look
9135 in the subject name and the subject alternative name extensions and
9136 omit any duplicate addresses.
9139 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows.
9140 This makes DSA verification about 2 % faster.
9143 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
9144 (meaning that now 2^5 values will be precomputed, which is only 4 KB
9145 plus overhead for 1024 bit moduli).
9146 This makes exponentiations about 0.5 % faster for 1024 bit
9147 exponents (as measured by "openssl speed rsa2048").
9150 *) Rename memory handling macros to avoid conflicts with other
9152 Malloc => OPENSSL_malloc
9153 Malloc_locked => OPENSSL_malloc_locked
9154 Realloc => OPENSSL_realloc
9155 Free => OPENSSL_free
9158 *) New function BN_mod_exp_mont_word for small bases (roughly 15%
9159 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
9162 *) CygWin32 support.
9163 [John Jarvie <jjarvie@newsguy.com>]
9165 *) The type-safe stack code has been rejigged. It is now only compiled
9166 in when OpenSSL is configured with the DEBUG_SAFESTACK option and
9167 by default all type-specific stack functions are "#define"d back to
9168 standard stack functions. This results in more streamlined output
9169 but retains the type-safety checking possibilities of the original
9173 *) The STACK code has been cleaned up, and certain type declarations
9174 that didn't make a lot of sense have been brought in line. This has
9175 also involved a cleanup of sorts in safestack.h to more correctly
9176 map type-safe stack functions onto their plain stack counterparts.
9177 This work has also resulted in a variety of "const"ifications of
9178 lots of the code, especially "_cmp" operations which should normally
9179 be prototyped with "const" parameters anyway.
9182 *) When generating bytes for the first time in md_rand.c, 'stir the pool'
9183 by seeding with STATE_SIZE dummy bytes (with zero entropy count).
9184 (The PRNG state consists of two parts, the large pool 'state' and 'md',
9185 where all of 'md' is used each time the PRNG is used, but 'state'
9186 is used only indexed by a cyclic counter. As entropy may not be
9187 well distributed from the beginning, 'md' is important as a
9188 chaining variable. However, the output function chains only half
9189 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
9190 all of 'md', and seeding with STATE_SIZE dummy bytes will result
9191 in all of 'state' being rewritten, with the new values depending
9192 on virtually all of 'md'. This overcomes the 80 bit limitation.)
9195 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
9196 the handshake is continued after ssl_verify_cert_chain();
9197 otherwise, if SSL_VERIFY_NONE is set, remaining error codes
9198 can lead to 'unexplainable' connection aborts later.
9199 [Bodo Moeller; problem tracked down by Lutz Jaenicke]
9201 *) Major EVP API cipher revision.
9202 Add hooks for extra EVP features. This allows various cipher
9203 parameters to be set in the EVP interface. Support added for variable
9204 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
9205 setting of RC2 and RC5 parameters.
9207 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
9210 Remove lots of duplicated code from the EVP library. For example *every*
9211 cipher init() function handles the 'iv' in the same way according to the
9212 cipher mode. They also all do nothing if the 'key' parameter is NULL and
9213 for CFB and OFB modes they zero ctx->num.
9215 New functionality allows removal of S/MIME code RC2 hack.
9217 Most of the routines have the same form and so can be declared in terms
9220 By shifting this to the top level EVP_CipherInit() it can be removed from
9221 all individual ciphers. If the cipher wants to handle IVs or keys
9222 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
9225 Change lots of functions like EVP_EncryptUpdate() to now return a
9226 value: although software versions of the algorithms cannot fail
9227 any installed hardware versions can.
9230 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
9231 this option is set, tolerate broken clients that send the negotiated
9232 protocol version number instead of the requested protocol version
9236 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag;
9237 i.e. non-zero for export ciphersuites, zero otherwise.
9238 Previous versions had this flag inverted, inconsistent with
9239 rsa_tmp_cb (..._TMP_RSA_CB).
9240 [Bodo Moeller; problem reported by Amit Chopra]
9242 *) Add missing DSA library text string. Work around for some IIS
9243 key files with invalid SEQUENCE encoding.
9246 *) Add a document (doc/standards.txt) that list all kinds of standards
9247 and so on that are implemented in OpenSSL.
9250 *) Enhance c_rehash script. Old version would mishandle certificates
9251 with the same subject name hash and wouldn't handle CRLs at all.
9252 Added -fingerprint option to crl utility, to support new c_rehash
9256 *) Eliminate non-ANSI declarations in crypto.h and stack.h.
9259 *) Fix for SSL server purpose checking. Server checking was
9260 rejecting certificates which had extended key usage present
9261 but no ssl client purpose.
9262 [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>]
9264 *) Make PKCS#12 code work with no password. The PKCS#12 spec
9265 is a little unclear about how a blank password is handled.
9266 Since the password in encoded as a BMPString with terminating
9267 double NULL a zero length password would end up as just the
9268 double NULL. However no password at all is different and is
9269 handled differently in the PKCS#12 key generation code. NS
9270 treats a blank password as zero length. MSIE treats it as no
9271 password on export: but it will try both on import. We now do
9272 the same: PKCS12_parse() tries zero length and no password if
9273 the password is set to "" or NULL (NULL is now a valid password:
9274 it wasn't before) as does the pkcs12 application.
9277 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
9278 perror when PEM_read_bio_X509_REQ fails, the error message must
9279 be obtained from the error queue.
9282 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
9283 it in ERR_remove_state if appropriate, and change ERR_get_state
9284 accordingly to avoid race conditions (this is necessary because
9285 thread_hash is no longer constant once set).
9288 *) Bugfix for linux-elf makefile.one.
9291 *) RSA_get_default_method() will now cause a default
9292 RSA_METHOD to be chosen if one doesn't exist already.
9293 Previously this was only set during a call to RSA_new()
9294 or RSA_new_method(NULL) meaning it was possible for
9295 RSA_get_default_method() to return NULL.
9298 *) Added native name translation to the existing DSO code
9299 that will convert (if the flag to do so is set) filenames
9300 that are sufficiently small and have no path information
9301 into a canonical native form. Eg. "blah" converted to
9302 "libblah.so" or "blah.dll" etc.
9305 *) New function ERR_error_string_n(e, buf, len) which is like
9306 ERR_error_string(e, buf), but writes at most 'len' bytes
9307 including the 0 terminator. For ERR_error_string_n, 'buf'
9309 [Damien Miller <djm@mindrot.org>, Bodo Moeller]
9311 *) CONF library reworked to become more general. A new CONF
9312 configuration file reader "class" is implemented as well as a
9313 new functions (NCONF_*, for "New CONF") to handle it. The now
9314 old CONF_* functions are still there, but are reimplemented to
9315 work in terms of the new functions. Also, a set of functions
9316 to handle the internal storage of the configuration data is
9317 provided to make it easier to write new configuration file
9318 reader "classes" (I can definitely see something reading a
9319 configuration file in XML format, for example), called _CONF_*,
9320 or "the configuration storage API"...
9322 The new configuration file reading functions are:
9324 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
9325 NCONF_get_section, NCONF_get_string, NCONF_get_numbre
9327 NCONF_default, NCONF_WIN32
9329 NCONF_dump_fp, NCONF_dump_bio
9331 NCONF_default and NCONF_WIN32 are method (or "class") choosers,
9332 NCONF_new creates a new CONF object. This works in the same way
9333 as other interfaces in OpenSSL, like the BIO interface.
9334 NCONF_dump_* dump the internal storage of the configuration file,
9335 which is useful for debugging. All other functions take the same
9336 arguments as the old CONF_* functions wth the exception of the
9337 first that must be a `CONF *' instead of a `LHASH *'.
9339 To make it easer to use the new classes with the old CONF_* functions,
9340 the function CONF_set_default_method is provided.
9343 *) Add '-tls1' option to 'openssl ciphers', which was already
9344 mentioned in the documentation but had not been implemented.
9345 (This option is not yet really useful because even the additional
9346 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
9349 *) Initial DSO code added into libcrypto for letting OpenSSL (and
9350 OpenSSL-based applications) load shared libraries and bind to
9351 them in a portable way.
9352 [Geoff Thorpe, with contributions from Richard Levitte]
9354 Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
9356 *) Make sure _lrotl and _lrotr are only used with MSVC.
9358 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
9359 (the default implementation of RAND_status).
9361 *) Rename openssl x509 option '-crlext', which was added in 0.9.5,
9362 to '-clrext' (= clear extensions), as intended and documented.
9363 [Bodo Moeller; inconsistency pointed out by Michael Attili
9366 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length
9367 was larger than the MD block size.
9368 [Steve Henson, pointed out by Yost William <YostW@tce.com>]
9370 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
9371 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
9372 using the passed key: if the passed key was a private key the result
9373 of X509_print(), for example, would be to print out all the private key
9377 *) des_quad_cksum() byte order bug fix.
9378 [Ulf Möller, using the problem description in krb4-0.9.7, where
9379 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>]
9381 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
9383 [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>]
9385 *) For easily testing in shell scripts whether some command
9386 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
9387 returns with exit code 0 iff no command of the given name is available.
9388 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
9389 the output goes to stdout and nothing is printed to stderr.
9390 Additional arguments are always ignored.
9392 Since for each cipher there is a command of the same name,
9393 the 'no-cipher' compilation switches can be tested this way.
9395 ('openssl no-XXX' is not able to detect pseudo-commands such
9396 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
9399 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
9402 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
9403 is set; it will be thrown away anyway because each handshake creates
9405 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
9406 to parameters -- in previous versions (since OpenSSL 0.9.3) the
9407 'default key' from SSL_CTX_set_tmp_dh would always be lost, meaning
9408 you effectivly got SSL_OP_SINGLE_DH_USE when using this macro.
9411 *) New s_client option -ign_eof: EOF at stdin is ignored, and
9412 'Q' and 'R' lose their special meanings (quit/renegotiate).
9413 This is part of what -quiet does; unlike -quiet, -ign_eof
9414 does not suppress any output.
9417 *) Add compatibility options to the purpose and trust code. The
9418 purpose X509_PURPOSE_ANY is "any purpose" which automatically
9419 accepts a certificate or CA, this was the previous behaviour,
9420 with all the associated security issues.
9422 X509_TRUST_COMPAT is the old trust behaviour: only and
9423 automatically trust self signed roots in certificate store. A
9424 new trust setting X509_TRUST_DEFAULT is used to specify that
9425 a purpose has no associated trust setting and it should instead
9426 use the value in the default purpose.
9429 *) Fix the PKCS#8 DSA private key code so it decodes keys again
9430 and fix a memory leak.
9433 *) In util/mkerr.pl (which implements 'make errors'), preserve
9434 reason strings from the previous version of the .c file, as
9435 the default to have only downcase letters (and digits) in
9436 automatically generated reasons codes is not always appropriate.
9439 *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
9440 using strerror. Previously, ERR_reason_error_string() returned
9441 library names as reason strings for SYSerr; but SYSerr is a special
9442 case where small numbers are errno values, not library numbers.
9445 *) Add '-dsaparam' option to 'openssl dhparam' application. This
9446 converts DSA parameters into DH parameters. (When creating parameters,
9447 DSA_generate_parameters is used.)
9450 *) Include 'length' (recommended exponent length) in C code generated
9451 by 'openssl dhparam -C'.
9454 *) The second argument to set_label in perlasm was already being used
9455 so couldn't be used as a "file scope" flag. Moved to third argument
9459 *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
9460 instead of RAND_bytes for encryption IVs and salts.
9463 *) Include RAND_status() into RAND_METHOD instead of implementing
9464 it only for md_rand.c Otherwise replacing the PRNG by calling
9465 RAND_set_rand_method would be impossible.
9468 *) Don't let DSA_generate_key() enter an infinite loop if the random
9469 number generation fails.
9472 *) New 'rand' application for creating pseudo-random output.
9475 *) Added configuration support for Linux/IA64
9476 [Rolf Haberrecker <rolf@suse.de>]
9478 *) Assembler module support for Mingw32.
9481 *) Shared library support for HPUX (in shlib/).
9482 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous]
9484 *) Shared library support for Solaris gcc.
9485 [Lutz Behnke <behnke@trustcenter.de>]
9487 Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
9489 *) PKCS7_encrypt() was adding text MIME headers twice because they
9490 were added manually and by SMIME_crlf_copy().
9493 *) In bntest.c don't call BN_rand with zero bits argument.
9494 [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>]
9496 *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
9497 case was implemented. This caused BN_div_recp() to fail occasionally.
9500 *) Add an optional second argument to the set_label() in the perl
9501 assembly language builder. If this argument exists and is set
9502 to 1 it signals that the assembler should use a symbol whose
9503 scope is the entire file, not just the current function. This
9504 is needed with MASM which uses the format label:: for this scope.
9505 [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>]
9507 *) Change the ASN1 types so they are typedefs by default. Before
9508 almost all types were #define'd to ASN1_STRING which was causing
9509 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
9513 *) Change names of new functions to the new get1/get0 naming
9514 convention: After 'get1', the caller owns a reference count
9515 and has to call ..._free; 'get0' returns a pointer to some
9516 data structure without incrementing reference counters.
9517 (Some of the existing 'get' functions increment a reference
9518 counter, some don't.)
9519 Similarly, 'set1' and 'add1' functions increase reference
9520 counters or duplicate objects.
9523 *) Allow for the possibility of temp RSA key generation failure:
9524 the code used to assume it always worked and crashed on failure.
9527 *) Fix potential buffer overrun problem in BIO_printf().
9528 [Ulf Möller, using public domain code by Patrick Powell; problem
9529 pointed out by David Sacerdote <das33@cornell.edu>]
9531 *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions
9532 RAND_egd() and RAND_status(). In the command line application,
9533 the EGD socket can be specified like a seed file using RANDFILE
9537 *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
9538 Some CAs (e.g. Verisign) distribute certificates in this form.
9541 *) Remove the SSL_ALLOW_ADH compile option and set the default cipher
9542 list to exclude them. This means that no special compilation option
9543 is needed to use anonymous DH: it just needs to be included in the
9547 *) Change the EVP_MD_CTX_type macro so its meaning consistent with
9548 EVP_MD_type. The old functionality is available in a new macro called
9549 EVP_MD_md(). Change code that uses it and update docs.
9552 *) ..._ctrl functions now have corresponding ..._callback_ctrl functions
9553 where the 'void *' argument is replaced by a function pointer argument.
9554 Previously 'void *' was abused to point to functions, which works on
9555 many platforms, but is not correct. As these functions are usually
9556 called by macros defined in OpenSSL header files, most source code
9557 should work without changes.
9560 *) <openssl/opensslconf.h> (which is created by Configure) now contains
9561 sections with information on -D... compiler switches used for
9562 compiling the library so that applications can see them. To enable
9563 one of these sections, a pre-processor symbol OPENSSL_..._DEFINES
9564 must be defined. E.g.,
9565 #define OPENSSL_ALGORITHM_DEFINES
9566 #include <openssl/opensslconf.h>
9567 defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc.
9568 [Richard Levitte, Ulf and Bodo Möller]
9570 *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
9574 *) Change the 'other' type in certificate aux info to a STACK_OF
9575 X509_ALGOR. Although not an AlgorithmIdentifier as such it has
9576 the required ASN1 format: arbitrary types determined by an OID.
9579 *) Add some PEM_write_X509_REQ_NEW() functions and a command line
9580 argument to 'req'. This is not because the function is newer or
9581 better than others it just uses the work 'NEW' in the certificate
9582 request header lines. Some software needs this.
9585 *) Reorganise password command line arguments: now passwords can be
9586 obtained from various sources. Delete the PEM_cb function and make
9587 it the default behaviour: i.e. if the callback is NULL and the
9588 usrdata argument is not NULL interpret it as a null terminated pass
9589 phrase. If usrdata and the callback are NULL then the pass phrase
9590 is prompted for as usual.
9593 *) Add support for the Compaq Atalla crypto accelerator. If it is installed,
9594 the support is automatically enabled. The resulting binaries will
9595 autodetect the card and use it if present.
9596 [Ben Laurie and Compaq Inc.]
9598 *) Work around for Netscape hang bug. This sends certificate request
9599 and server done in one record. Since this is perfectly legal in the
9600 SSL/TLS protocol it isn't a "bug" option and is on by default. See
9601 the bugs/SSLv3 entry for more info.
9604 *) HP-UX tune-up: new unified configs, HP C compiler bug workaround.
9607 *) Add -rand argument to smime and pkcs12 applications and read/write
9611 *) New 'passwd' tool for crypt(3) and apr1 password hashes.
9614 *) Add command line password options to the remaining applications.
9617 *) Bug fix for BN_div_recp() for numerators with an even number of
9621 *) More tests in bntest.c, and changed test_bn output.
9624 *) ./config recognizes MacOS X now.
9627 *) Bug fix for BN_div() when the first words of num and divsor are
9628 equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0).
9631 *) Add support for various broken PKCS#8 formats, and command line
9632 options to produce them.
9635 *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
9636 get temporary BIGNUMs from a BN_CTX.
9639 *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
9643 *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and
9644 include a #define from the old name to the new. The original intent
9645 was that statically linked binaries could for example just call
9646 SSLeay_add_all_ciphers() to just add ciphers to the table and not
9647 link with digests. This never worked because SSLeay_add_all_digests()
9648 and SSLeay_add_all_ciphers() were in the same source file so calling
9649 one would link with the other. They are now in separate source files.
9652 *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
9655 *) Use a less unusual form of the Miller-Rabin primality test (it used
9656 a binary algorithm for exponentiation integrated into the Miller-Rabin
9657 loop, our standard modexp algorithms are faster).
9660 *) Support for the EBCDIC character set completed.
9661 [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>]
9663 *) Source code cleanups: use const where appropriate, eliminate casts,
9664 use void * instead of char * in lhash.
9667 *) Bugfix: ssl3_send_server_key_exchange was not restartable
9668 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
9669 this the server could overwrite ephemeral keys that the client
9673 *) Turn DSA_is_prime into a macro that calls BN_is_prime,
9674 using 50 iterations of the Rabin-Miller test.
9676 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
9677 iterations of the Rabin-Miller test as required by the appendix
9678 to FIPS PUB 186[-1]) instead of DSA_is_prime.
9679 As BN_is_prime_fasttest includes trial division, DSA parameter
9680 generation becomes much faster.
9682 This implies a change for the callback functions in DSA_is_prime
9683 and DSA_generate_parameters: The callback function is called once
9684 for each positive witness in the Rabin-Miller test, not just
9685 occasionally in the inner loop; and the parameters to the
9686 callback function now provide an iteration count for the outer
9687 loop rather than for the current invocation of the inner loop.
9688 DSA_generate_parameters additionally can call the callback
9689 function with an 'iteration count' of -1, meaning that a
9690 candidate has passed the trial division test (when q is generated
9691 from an application-provided seed, trial division is skipped).
9694 *) New function BN_is_prime_fasttest that optionally does trial
9695 division before starting the Rabin-Miller test and has
9696 an additional BN_CTX * argument (whereas BN_is_prime always
9697 has to allocate at least one BN_CTX).
9698 'callback(1, -1, cb_arg)' is called when a number has passed the
9699 trial division stage.
9702 *) Fix for bug in CRL encoding. The validity dates weren't being handled
9706 *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
9709 *) New function BN_pseudo_rand().
9712 *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
9713 bignum version of BN_from_montgomery() with the working code from
9714 SSLeay 0.9.0 (the word based version is faster anyway), and clean up
9718 *) Avoid a race condition in s2_clnt.c (function get_server_hello) that
9719 made it impossible to use the same SSL_SESSION data structure in
9720 SSL2 clients in multiple threads.
9723 *) The return value of RAND_load_file() no longer counts bytes obtained
9724 by stat(). RAND_load_file(..., -1) is new and uses the complete file
9725 to seed the PRNG (previously an explicit byte count was required).
9726 [Ulf Möller, Bodo Möller]
9728 *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
9729 used (char *) instead of (void *) and had casts all over the place.
9732 *) Make BN_generate_prime() return NULL on error if ret!=NULL.
9735 *) Retain source code compatibility for BN_prime_checks macro:
9736 BN_is_prime(..., BN_prime_checks, ...) now uses
9737 BN_prime_checks_for_size to determine the appropriate number of
9738 Rabin-Miller iterations.
9741 *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
9742 DH_CHECK_P_NOT_SAFE_PRIME.
9743 (Check if this is true? OpenPGP calls them "strong".)
9746 *) Merge the functionality of "dh" and "gendh" programs into a new program
9747 "dhparam". The old programs are retained for now but will handle DH keys
9748 (instead of parameters) in future.
9751 *) Make the ciphers, s_server and s_client programs check the return values
9752 when a new cipher list is set.
9755 *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
9756 ciphers. Before when the 56bit ciphers were enabled the sorting was
9759 The syntax for the cipher sorting has been extended to support sorting by
9760 cipher-strength (using the strength_bits hard coded in the tables).
9761 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
9763 Fix a bug in the cipher-command parser: when supplying a cipher command
9764 string with an "undefined" symbol (neither command nor alphanumeric
9765 [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now
9766 an error is flagged.
9768 Due to the strength-sorting extension, the code of the
9769 ssl_create_cipher_list() function was completely rearranged. I hope that
9770 the readability was also increased :-)
9771 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
9773 *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1
9774 for the first serial number and places 2 in the serial number file. This
9775 avoids problems when the root CA is created with serial number zero and
9776 the first user certificate has the same issuer name and serial number
9780 *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
9781 the new code. Add documentation for this stuff.
9784 *) Changes to X509_ATTRIBUTE utilities. These have been renamed from
9785 X509_*() to X509at_*() on the grounds that they don't handle X509
9786 structures and behave in an analogous way to the X509v3 functions:
9787 they shouldn't be called directly but wrapper functions should be used
9790 So we also now have some wrapper functions that call the X509at functions
9791 when passed certificate requests. (TO DO: similar things can be done with
9792 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
9793 things. Some of these need some d2i or i2d and print functionality
9794 because they handle more complex structures.)
9797 *) Add missing #ifndefs that caused missing symbols when building libssl
9798 as a shared library without RSA. Use #ifndef NO_SSL2 instead of
9799 NO_RSA in ssl/s2*.c.
9800 [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller]
9802 *) Precautions against using the PRNG uninitialized: RAND_bytes() now
9803 has a return value which indicates the quality of the random data
9804 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
9805 error queue. New function RAND_pseudo_bytes() generates output that is
9806 guaranteed to be unique but not unpredictable. RAND_add is like
9807 RAND_seed, but takes an extra argument for an entropy estimate
9808 (RAND_seed always assumes full entropy).
9811 *) Do more iterations of Rabin-Miller probable prime test (specifically,
9812 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
9813 instead of only 2 for all lengths; see BN_prime_checks_for_size definition
9814 in crypto/bn/bn_prime.c for the complete table). This guarantees a
9815 false-positive rate of at most 2^-80 for random input.
9818 *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
9821 *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
9822 in the 0.9.5 release), this returns the chain
9823 from an X509_CTX structure with a dup of the stack and all
9824 the X509 reference counts upped: so the stack will exist
9825 after X509_CTX_cleanup() has been called. Modify pkcs12.c
9828 Also make SSL_SESSION_print() print out the verify return
9832 *) Add manpage for the pkcs12 command. Also change the default
9833 behaviour so MAC iteration counts are used unless the new
9834 -nomaciter option is used. This improves file security and
9835 only older versions of MSIE (4.0 for example) need it.
9838 *) Honor the no-xxx Configure options when creating .DEF files.
9841 *) Add PKCS#10 attributes to field table: challengePassword,
9842 unstructuredName and unstructuredAddress. These are taken from
9843 draft PKCS#9 v2.0 but are compatible with v1.2 provided no
9844 international characters are used.
9846 More changes to X509_ATTRIBUTE code: allow the setting of types
9847 based on strings. Remove the 'loc' parameter when adding
9848 attributes because these will be a SET OF encoding which is sorted
9852 *) Initial changes to the 'req' utility to allow request generation
9853 automation. This will allow an application to just generate a template
9854 file containing all the field values and have req construct the
9857 Initial support for X509_ATTRIBUTE handling. Stacks of these are
9858 used all over the place including certificate requests and PKCS#7
9859 structures. They are currently handled manually where necessary with
9860 some primitive wrappers for PKCS#7. The new functions behave in a
9861 manner analogous to the X509 extension functions: they allow
9862 attributes to be looked up by NID and added.
9864 Later something similar to the X509V3 code would be desirable to
9865 automatically handle the encoding, decoding and printing of the
9866 more complex types. The string types like challengePassword can
9867 be handled by the string table functions.
9869 Also modified the multi byte string table handling. Now there is
9870 a 'global mask' which masks out certain types. The table itself
9871 can use the flag STABLE_NO_MASK to ignore the mask setting: this
9872 is useful when for example there is only one permissible type
9873 (as in countryName) and using the mask might result in no valid
9877 *) Clean up 'Finished' handling, and add functions SSL_get_finished and
9878 SSL_get_peer_finished to allow applications to obtain the latest
9879 Finished messages sent to the peer or expected from the peer,
9880 respectively. (SSL_get_peer_finished is usually the Finished message
9881 actually received from the peer, otherwise the protocol will be aborted.)
9883 As the Finished message are message digests of the complete handshake
9884 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
9885 be used for external authentication procedures when the authentication
9886 provided by SSL/TLS is not desired or is not enough.
9889 *) Enhanced support for Alpha Linux is added. Now ./config checks if
9890 the host supports BWX extension and if Compaq C is present on the
9891 $PATH. Just exploiting of the BWX extension results in 20-30%
9892 performance kick for some algorithms, e.g. DES and RC4 to mention
9893 a couple. Compaq C in turn generates ~20% faster code for MD5 and
9897 *) Add support for MS "fast SGC". This is arguably a violation of the
9898 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
9899 weak crypto and after checking the certificate is SGC a second one
9900 with strong crypto. MS SGC stops the first handshake after receiving
9901 the server certificate message and sends a second client hello. Since
9902 a server will typically do all the time consuming operations before
9903 expecting any further messages from the client (server key exchange
9904 is the most expensive) there is little difference between the two.
9906 To get OpenSSL to support MS SGC we have to permit a second client
9907 hello message after we have sent server done. In addition we have to
9908 reset the MAC if we do get this second client hello.
9911 *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide
9912 if a DER encoded private key is RSA or DSA traditional format. Changed
9913 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
9914 format DER encoded private key. Newer code should use PKCS#8 format which
9915 has the key type encoded in the ASN1 structure. Added DER private key
9916 support to pkcs8 application.
9919 *) SSL 3/TLS 1 servers now don't request certificates when an anonymous
9920 ciphersuites has been selected (as required by the SSL 3/TLS 1
9921 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
9922 is set, we interpret this as a request to violate the specification
9923 (the worst that can happen is a handshake failure, and 'correct'
9924 behaviour would result in a handshake failure anyway).
9927 *) In SSL_CTX_add_session, take into account that there might be multiple
9928 SSL_SESSION structures with the same session ID (e.g. when two threads
9929 concurrently obtain them from an external cache).
9930 The internal cache can handle only one SSL_SESSION with a given ID,
9931 so if there's a conflict, we now throw out the old one to achieve
9935 *) Add OIDs for idea and blowfish in CBC mode. This will allow both
9936 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
9937 some routines that use cipher OIDs: some ciphers do not have OIDs
9938 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
9942 *) Simplify the trust setting structure and code. Now we just have
9943 two sequences of OIDs for trusted and rejected settings. These will
9944 typically have values the same as the extended key usage extension
9945 and any application specific purposes.
9947 The trust checking code now has a default behaviour: it will just
9948 check for an object with the same NID as the passed id. Functions can
9949 be provided to override either the default behaviour or the behaviour
9950 for a given id. SSL client, server and email already have functions
9951 in place for compatibility: they check the NID and also return "trusted"
9952 if the certificate is self signed.
9955 *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the
9956 traditional format into an EVP_PKEY structure.
9959 *) Add a password callback function PEM_cb() which either prompts for
9960 a password if usr_data is NULL or otherwise assumes it is a null
9961 terminated password. Allow passwords to be passed on command line
9962 environment or config files in a few more utilities.
9965 *) Add a bunch of DER and PEM functions to handle PKCS#8 format private
9966 keys. Add some short names for PKCS#8 PBE algorithms and allow them
9967 to be specified on the command line for the pkcs8 and pkcs12 utilities.
9968 Update documentation.
9971 *) Support for ASN1 "NULL" type. This could be handled before by using
9972 ASN1_TYPE but there wasn't any function that would try to read a NULL
9973 and produce an error if it couldn't. For compatibility we also have
9974 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
9975 don't allocate anything because they don't need to.
9978 *) Initial support for MacOS is now provided. Examine INSTALL.MacOS
9980 [Andy Polyakov, Roy Woods <roy@centicsystems.ca>]
9982 *) Rebuild of the memory allocation routines used by OpenSSL code and
9983 possibly others as well. The purpose is to make an interface that
9984 provide hooks so anyone can build a separate set of allocation and
9985 deallocation routines to be used by OpenSSL, for example memory
9986 pool implementations, or something else, which was previously hard
9987 since Malloc(), Realloc() and Free() were defined as macros having
9988 the values malloc, realloc and free, respectively (except for Win32
9989 compilations). The same is provided for memory debugging code.
9990 OpenSSL already comes with functionality to find memory leaks, but
9991 this gives people a chance to debug other memory problems.
9993 With these changes, a new set of functions and macros have appeared:
9995 CRYPTO_set_mem_debug_functions() [F]
9996 CRYPTO_get_mem_debug_functions() [F]
9997 CRYPTO_dbg_set_options() [F]
9998 CRYPTO_dbg_get_options() [F]
9999 CRYPTO_malloc_debug_init() [M]
10001 The memory debug functions are NULL by default, unless the library
10002 is compiled with CRYPTO_MDEBUG or friends is defined. If someone
10003 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
10004 gives the standard debugging functions that come with OpenSSL) or
10005 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
10006 provided by the library user) must be used. When the standard
10007 debugging functions are used, CRYPTO_dbg_set_options can be used to
10008 request additional information:
10009 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
10010 the CRYPTO_MDEBUG_xxx macro when compiling the library.
10012 Also, things like CRYPTO_set_mem_functions will always give the
10013 expected result (the new set of functions is used for allocation
10014 and deallocation) at all times, regardless of platform and compiler
10017 To finish it up, some functions that were never use in any other
10018 way than through macros have a new API and new semantic:
10020 CRYPTO_dbg_malloc()
10021 CRYPTO_dbg_realloc()
10024 All macros of value have retained their old syntax.
10025 [Richard Levitte and Bodo Moeller]
10027 *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
10028 ordering of SMIMECapabilities wasn't in "strength order" and there
10029 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
10033 *) Some ASN1 types with illegal zero length encoding (INTEGER,
10034 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
10035 [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson]
10037 *) Merge in my S/MIME library for OpenSSL. This provides a simple
10038 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
10039 functionality to handle multipart/signed properly) and a utility
10040 called 'smime' to call all this stuff. This is based on code I
10041 originally wrote for Celo who have kindly allowed it to be
10042 included in OpenSSL.
10045 *) Add variants des_set_key_checked and des_set_key_unchecked of
10046 des_set_key (aka des_key_sched). Global variable des_check_key
10047 decides which of these is called by des_set_key; this way
10048 des_check_key behaves as it always did, but applications and
10049 the library itself, which was buggy for des_check_key == 1,
10050 have a cleaner way to pick the version they need.
10053 *) New function PKCS12_newpass() which changes the password of a
10057 *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and
10058 dynamic mix. In both cases the ids can be used as an index into the
10059 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
10060 functions so they accept a list of the field values and the
10061 application doesn't need to directly manipulate the X509_TRUST
10065 *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
10069 *) Modify the way the V3 extension code looks up extensions. This now
10070 works in a similar way to the object code: we have some "standard"
10071 extensions in a static table which is searched with OBJ_bsearch()
10072 and the application can add dynamic ones if needed. The file
10073 crypto/x509v3/ext_dat.h now has the info: this file needs to be
10074 updated whenever a new extension is added to the core code and kept
10075 in ext_nid order. There is a simple program 'tabtest.c' which checks
10076 this. New extensions are not added too often so this file can readily
10077 be maintained manually.
10079 There are two big advantages in doing things this way. The extensions
10080 can be looked up immediately and no longer need to be "added" using
10081 X509V3_add_standard_extensions(): this function now does nothing.
10082 [Side note: I get *lots* of email saying the extension code doesn't
10083 work because people forget to call this function]
10084 Also no dynamic allocation is done unless new extensions are added:
10085 so if we don't add custom extensions there is no need to call
10086 X509V3_EXT_cleanup().
10089 *) Modify enc utility's salting as follows: make salting the default. Add a
10090 magic header, so unsalted files fail gracefully instead of just decrypting
10091 to garbage. This is because not salting is a big security hole, so people
10092 should be discouraged from doing it.
10095 *) Fixes and enhancements to the 'x509' utility. It allowed a message
10096 digest to be passed on the command line but it only used this
10097 parameter when signing a certificate. Modified so all relevant
10098 operations are affected by the digest parameter including the
10099 -fingerprint and -x509toreq options. Also -x509toreq choked if a
10100 DSA key was used because it didn't fix the digest.
10103 *) Initial certificate chain verify code. Currently tests the untrusted
10104 certificates for consistency with the verify purpose (which is set
10105 when the X509_STORE_CTX structure is set up) and checks the pathlength.
10107 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
10108 this is because it will reject chains with invalid extensions whereas
10109 every previous version of OpenSSL and SSLeay made no checks at all.
10111 Trust code: checks the root CA for the relevant trust settings. Trust
10112 settings have an initial value consistent with the verify purpose: e.g.
10113 if the verify purpose is for SSL client use it expects the CA to be
10114 trusted for SSL client use. However the default value can be changed to
10115 permit custom trust settings: one example of this would be to only trust
10116 certificates from a specific "secure" set of CAs.
10118 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
10119 which should be used for version portability: especially since the
10120 verify structure is likely to change more often now.
10122 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
10123 to set them. If not set then assume SSL clients will verify SSL servers
10126 Two new options to the verify program: -untrusted allows a set of
10127 untrusted certificates to be passed in and -purpose which sets the
10128 intended purpose of the certificate. If a purpose is set then the
10129 new chain verify code is used to check extension consistency.
10132 *) Support for the authority information access extension.
10135 *) Modify RSA and DSA PEM read routines to transparently handle
10136 PKCS#8 format private keys. New *_PUBKEY_* functions that handle
10137 public keys in a format compatible with certificate
10138 SubjectPublicKeyInfo structures. Unfortunately there were already
10139 functions called *_PublicKey_* which used various odd formats so
10140 these are retained for compatibility: however the DSA variants were
10141 never in a public release so they have been deleted. Changed dsa/rsa
10142 utilities to handle the new format: note no releases ever handled public
10143 keys so we should be OK.
10145 The primary motivation for this change is to avoid the same fiasco
10146 that dogs private keys: there are several incompatible private key
10147 formats some of which are standard and some OpenSSL specific and
10148 require various evil hacks to allow partial transparent handling and
10149 even then it doesn't work with DER formats. Given the option anything
10150 other than PKCS#8 should be dumped: but the other formats have to
10151 stay in the name of compatibility.
10153 With public keys and the benefit of hindsight one standard format
10154 is used which works with EVP_PKEY, RSA or DSA structures: though
10155 it clearly returns an error if you try to read the wrong kind of key.
10157 Added a -pubkey option to the 'x509' utility to output the public key.
10158 Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*()
10159 (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add
10160 EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*())
10161 that do the same as the EVP_PKEY_assign_*() except they up the
10162 reference count of the added key (they don't "swallow" the
10166 *) Fixes to crypto/x509/by_file.c the code to read in certificates and
10167 CRLs would fail if the file contained no certificates or no CRLs:
10168 added a new function to read in both types and return the number
10169 read: this means that if none are read it will be an error. The
10170 DER versions of the certificate and CRL reader would always fail
10171 because it isn't possible to mix certificates and CRLs in DER format
10172 without choking one or the other routine. Changed this to just read
10173 a certificate: this is the best we can do. Also modified the code
10174 in apps/verify.c to take notice of return codes: it was previously
10175 attempting to read in certificates from NULL pointers and ignoring
10176 any errors: this is one reason why the cert and CRL reader seemed
10177 to work. It doesn't check return codes from the default certificate
10178 routines: these may well fail if the certificates aren't installed.
10181 *) Code to support otherName option in GeneralName.
10184 *) First update to verify code. Change the verify utility
10185 so it warns if it is passed a self signed certificate:
10186 for consistency with the normal behaviour. X509_verify
10187 has been modified to it will now verify a self signed
10188 certificate if *exactly* the same certificate appears
10189 in the store: it was previously impossible to trust a
10190 single self signed certificate. This means that:
10191 openssl verify ss.pem
10192 now gives a warning about a self signed certificate but
10193 openssl verify -CAfile ss.pem ss.pem
10197 *) For servers, store verify_result in SSL_SESSION data structure
10198 (and add it to external session representation).
10199 This is needed when client certificate verifications fails,
10200 but an application-provided verification callback (set by
10201 SSL_CTX_set_cert_verify_callback) allows accepting the session
10202 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
10203 but returns 1): When the session is reused, we have to set
10204 ssl->verify_result to the appropriate error code to avoid
10206 [Bodo Moeller, problem pointed out by Lutz Jaenicke]
10208 *) Fix a bug in the new PKCS#7 code: it didn't consider the
10209 case in PKCS7_dataInit() where the signed PKCS7 structure
10210 didn't contain any existing data because it was being created.
10211 [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson]
10213 *) Add a salt to the key derivation routines in enc.c. This
10214 forms the first 8 bytes of the encrypted file. Also add a
10215 -S option to allow a salt to be input on the command line.
10218 *) New function X509_cmp(). Oddly enough there wasn't a function
10219 to compare two certificates. We do this by working out the SHA1
10220 hash and comparing that. X509_cmp() will be needed by the trust
10224 *) SSL_get1_session() is like SSL_get_session(), but increments
10225 the reference count in the SSL_SESSION returned.
10226 [Geoff Thorpe <geoff@eu.c2.net>]
10228 *) Fix for 'req': it was adding a null to request attributes.
10229 Also change the X509_LOOKUP and X509_INFO code to handle
10230 certificate auxiliary information.
10233 *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document
10237 *) Add the possibility to add extra information to the memory leak
10238 detecting output, to form tracebacks, showing from where each
10239 allocation was originated: CRYPTO_push_info("constant string") adds
10240 the string plus current file name and line number to a per-thread
10241 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
10242 is like calling CYRPTO_pop_info() until the stack is empty.
10243 Also updated memory leak detection code to be multi-thread-safe.
10246 *) Add options -text and -noout to pkcs7 utility and delete the
10247 encryption options which never did anything. Update docs.
10250 *) Add options to some of the utilities to allow the pass phrase
10251 to be included on either the command line (not recommended on
10252 OSes like Unix) or read from the environment. Update the
10253 manpages and fix a few bugs.
10256 *) Add a few manpages for some of the openssl commands.
10259 *) Fix the -revoke option in ca. It was freeing up memory twice,
10260 leaking and not finding already revoked certificates.
10263 *) Extensive changes to support certificate auxiliary information.
10264 This involves the use of X509_CERT_AUX structure and X509_AUX
10265 functions. An X509_AUX function such as PEM_read_X509_AUX()
10266 can still read in a certificate file in the usual way but it
10267 will also read in any additional "auxiliary information". By
10268 doing things this way a fair degree of compatibility can be
10269 retained: existing certificates can have this information added
10270 using the new 'x509' options.
10272 Current auxiliary information includes an "alias" and some trust
10273 settings. The trust settings will ultimately be used in enhanced
10274 certificate chain verification routines: currently a certificate
10275 can only be trusted if it is self signed and then it is trusted
10279 *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD).
10280 The problem was that one of the replacement routines had not been working
10281 since SSLeay releases. For now the offending routine has been replaced
10282 with non-optimised assembler. Even so, this now gives around 95%
10283 performance improvement for 1024 bit RSA signs.
10286 *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2
10287 handling. Most clients have the effective key size in bits equal to
10288 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
10289 A few however don't do this and instead use the size of the decrypted key
10290 to determine the RC2 key length and the AlgorithmIdentifier to determine
10291 the effective key length. In this case the effective key length can still
10292 be 40 bits but the key length can be 168 bits for example. This is fixed
10293 by manually forcing an RC2 key into the EVP_PKEY structure because the
10294 EVP code can't currently handle unusual RC2 key sizes: it always assumes
10295 the key length and effective key length are equal.
10298 *) Add a bunch of functions that should simplify the creation of
10299 X509_NAME structures. Now you should be able to do:
10300 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
10301 and have it automatically work out the correct field type and fill in
10302 the structures. The more adventurous can try:
10303 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
10304 and it will (hopefully) work out the correct multibyte encoding.
10307 *) Change the 'req' utility to use the new field handling and multibyte
10308 copy routines. Before the DN field creation was handled in an ad hoc
10309 way in req, ca, and x509 which was rather broken and didn't support
10310 BMPStrings or UTF8Strings. Since some software doesn't implement
10311 BMPStrings or UTF8Strings yet, they can be enabled using the config file
10312 using the dirstring_type option. See the new comment in the default
10313 openssl.cnf for more info.
10316 *) Make crypto/rand/md_rand.c more robust:
10317 - Assure unique random numbers after fork().
10318 - Make sure that concurrent threads access the global counter and
10319 md serializably so that we never lose entropy in them
10320 or use exactly the same state in multiple threads.
10321 Access to the large state is not always serializable because
10322 the additional locking could be a performance killer, and
10323 md should be large enough anyway.
10326 *) New file apps/app_rand.c with commonly needed functionality
10327 for handling the random seed file.
10329 Use the random seed file in some applications that previously did not:
10331 dsaparam -genkey (which also ignored its '-rand' option),
10334 x509 (when signing).
10335 Except on systems with /dev/urandom, it is crucial to have a random
10336 seed file at least for key creation, DSA signing, and for DH exchanges;
10337 for RSA signatures we could do without one.
10339 gendh and gendsa (unlike genrsa) used to read only the first byte
10340 of each file listed in the '-rand' option. The function as previously
10341 found in genrsa is now in app_rand.c and is used by all programs
10342 that support '-rand'.
10345 *) In RAND_write_file, use mode 0600 for creating files;
10346 don't just chmod when it may be too late.
10349 *) Report an error from X509_STORE_load_locations
10350 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
10353 *) New function ASN1_mbstring_copy() this copies a string in either
10354 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
10355 into an ASN1_STRING type. A mask of permissible types is passed
10356 and it chooses the "minimal" type to use or an error if not type
10360 *) Add function equivalents to the various macros in asn1.h. The old
10361 macros are retained with an M_ prefix. Code inside the library can
10362 use the M_ macros. External code (including the openssl utility)
10363 should *NOT* in order to be "shared library friendly".
10366 *) Add various functions that can check a certificate's extensions
10367 to see if it usable for various purposes such as SSL client,
10368 server or S/MIME and CAs of these types. This is currently
10369 VERY EXPERIMENTAL but will ultimately be used for certificate chain
10370 verification. Also added a -purpose flag to x509 utility to
10371 print out all the purposes.
10374 *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated
10378 *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search
10379 for, obtain and decode and extension and obtain its critical flag.
10380 This allows all the necessary extension code to be handled in a
10381 single function call.
10384 *) RC4 tune-up featuring 30-40% performance improvement on most RISC
10385 platforms. See crypto/rc4/rc4_enc.c for further details.
10388 *) New -noout option to asn1parse. This causes no output to be produced
10389 its main use is when combined with -strparse and -out to extract data
10390 from a file (which may not be in ASN.1 format).
10393 *) Fix for pkcs12 program. It was hashing an invalid certificate pointer
10394 when producing the local key id.
10395 [Richard Levitte <levitte@stacken.kth.se>]
10397 *) New option -dhparam in s_server. This allows a DH parameter file to be
10398 stated explicitly. If it is not stated then it tries the first server
10399 certificate file. The previous behaviour hard coded the filename
10403 *) Add -pubin and -pubout options to the rsa and dsa commands. These allow
10404 a public key to be input or output. For example:
10405 openssl rsa -in key.pem -pubout -out pubkey.pem
10406 Also added necessary DSA public key functions to handle this.
10409 *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
10410 in the message. This was handled by allowing
10411 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
10412 [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>]
10414 *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
10415 to the end of the strings whereas this didn't. This would cause problems
10416 if strings read with d2i_ASN1_bytes() were later modified.
10417 [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>]
10419 *) Fix for base64 decode bug. When a base64 bio reads only one line of
10420 data and it contains EOF it will end up returning an error. This is
10421 caused by input 46 bytes long. The cause is due to the way base64
10422 BIOs find the start of base64 encoded data. They do this by trying a
10423 trial decode on each line until they find one that works. When they
10424 do a flag is set and it starts again knowing it can pass all the
10425 data directly through the decoder. Unfortunately it doesn't reset
10426 the context it uses. This means that if EOF is reached an attempt
10427 is made to pass two EOFs through the context and this causes the
10428 resulting error. This can also cause other problems as well. As is
10429 usual with these problems it takes *ages* to find and the fix is
10430 trivial: move one line.
10431 [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ]
10433 *) Ugly workaround to get s_client and s_server working under Windows. The
10434 old code wouldn't work because it needed to select() on sockets and the
10435 tty (for keypresses and to see if data could be written). Win32 only
10436 supports select() on sockets so we select() with a 1s timeout on the
10437 sockets and then see if any characters are waiting to be read, if none
10438 are present then we retry, we also assume we can always write data to
10439 the tty. This isn't nice because the code then blocks until we've
10440 received a complete line of data and it is effectively polling the
10441 keyboard at 1s intervals: however it's quite a bit better than not
10442 working at all :-) A dedicated Windows application might handle this
10443 with an event loop for example.
10446 *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
10447 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
10448 will be called when RSA_sign() and RSA_verify() are used. This is useful
10449 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
10450 For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
10451 should *not* be used: RSA_sign() and RSA_verify() must be used instead.
10452 This necessitated the support of an extra signature type NID_md5_sha1
10453 for SSL signatures and modifications to the SSL library to use it instead
10454 of calling RSA_public_decrypt() and RSA_private_encrypt().
10457 *) Add new -verify -CAfile and -CApath options to the crl program, these
10458 will lookup a CRL issuers certificate and verify the signature in a
10459 similar way to the verify program. Tidy up the crl program so it
10460 no longer accesses structures directly. Make the ASN1 CRL parsing a bit
10461 less strict. It will now permit CRL extensions even if it is not
10462 a V2 CRL: this will allow it to tolerate some broken CRLs.
10465 *) Initialize all non-automatic variables each time one of the openssl
10466 sub-programs is started (this is necessary as they may be started
10467 multiple times from the "OpenSSL>" prompt).
10468 [Lennart Bang, Bodo Moeller]
10470 *) Preliminary compilation option RSA_NULL which disables RSA crypto without
10471 removing all other RSA functionality (this is what NO_RSA does). This
10472 is so (for example) those in the US can disable those operations covered
10473 by the RSA patent while allowing storage and parsing of RSA keys and RSA
10477 *) Non-copying interface to BIO pairs.
10478 (still largely untested)
10481 *) New function ANS1_tag2str() to convert an ASN1 tag to a descriptive
10482 ASCII string. This was handled independently in various places before.
10485 *) New functions UTF8_getc() and UTF8_putc() that parse and generate
10486 UTF8 strings a character at a time.
10489 *) Use client_version from client hello to select the protocol
10490 (s23_srvr.c) and for RSA client key exchange verification
10491 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
10494 *) Add various utility functions to handle SPKACs, these were previously
10495 handled by poking round in the structure internals. Added new function
10496 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
10497 print, verify and generate SPKACs. Based on an original idea from
10498 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
10501 *) RIPEMD160 is operational on all platforms and is back in 'make test'.
10504 *) Allow the config file extension section to be overwritten on the
10505 command line. Based on an original idea from Massimiliano Pala
10506 <madwolf@comune.modena.it>. The new option is called -extensions
10507 and can be applied to ca, req and x509. Also -reqexts to override
10508 the request extensions in req and -crlexts to override the crl extensions
10512 *) Add new feature to the SPKAC handling in ca. Now you can include
10513 the same field multiple times by preceding it by "XXXX." for example:
10516 this is the same syntax as used in the req config file.
10519 *) Allow certificate extensions to be added to certificate requests. These
10520 are specified in a 'req_extensions' option of the req section of the
10521 config file. They can be printed out with the -text option to req but
10522 are otherwise ignored at present.
10525 *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
10526 data read consists of only the final block it would not decrypted because
10527 EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
10528 A misplaced 'break' also meant the decrypted final block might not be
10529 copied until the next read.
10532 *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
10533 a few extra parameters to the DH structure: these will be useful if
10534 for example we want the value of 'q' or implement X9.42 DH.
10537 *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and
10538 provides hooks that allow the default DSA functions or functions on a
10539 "per key" basis to be replaced. This allows hardware acceleration and
10540 hardware key storage to be handled without major modification to the
10541 library. Also added low level modexp hooks and CRYPTO_EX structure and
10542 associated functions.
10545 *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
10546 as "read only": it can't be written to and the buffer it points to will
10547 not be freed. Reading from a read only BIO is much more efficient than
10548 a normal memory BIO. This was added because there are several times when
10549 an area of memory needs to be read from a BIO. The previous method was
10550 to create a memory BIO and write the data to it, this results in two
10551 copies of the data and an O(n^2) reading algorithm. There is a new
10552 function BIO_new_mem_buf() which creates a read only memory BIO from
10553 an area of memory. Also modified the PKCS#7 routines to use read only
10557 *) Bugfix: ssl23_get_client_hello did not work properly when called in
10558 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
10559 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
10560 but a retry condition occurred while trying to read the rest.
10563 *) The PKCS7_ENC_CONTENT_new() function was setting the content type as
10564 NID_pkcs7_encrypted by default: this was wrong since this should almost
10565 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
10566 the encrypted data type: this is a more sensible place to put it and it
10567 allows the PKCS#12 code to be tidied up that duplicated this
10571 *) Changed obj_dat.pl script so it takes its input and output files on
10572 the command line. This should avoid shell escape redirection problems
10576 *) Initial support for certificate extension requests, these are included
10577 in things like Xenroll certificate requests. Included functions to allow
10578 extensions to be obtained and added.
10581 *) -crlf option to s_client and s_server for sending newlines as
10582 CRLF (as required by many protocols).
10585 Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
10587 *) Install libRSAglue.a when OpenSSL is built with RSAref.
10588 [Ralf S. Engelschall]
10590 *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency.
10591 [Andrija Antonijevic <TheAntony2@bigfoot.com>]
10593 *) Fix -startdate and -enddate (which was missing) arguments to 'ca'
10597 *) New function DSA_dup_DH, which duplicates DSA parameters/keys as
10598 DH parameters/keys (q is lost during that conversion, but the resulting
10599 DH parameters contain its length).
10601 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
10602 much faster than DH_generate_parameters (which creates parameters
10603 where p = 2*q + 1), and also the smaller q makes DH computations
10604 much more efficient (160-bit exponentiation instead of 1024-bit
10605 exponentiation); so this provides a convenient way to support DHE
10606 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
10607 utter importance to use
10608 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
10610 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
10611 when such DH parameters are used, because otherwise small subgroup
10612 attacks may become possible!
10615 *) Avoid memory leak in i2d_DHparams.
10618 *) Allow the -k option to be used more than once in the enc program:
10619 this allows the same encrypted message to be read by multiple recipients.
10622 *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
10623 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
10624 it will always use the numerical form of the OID, even if it has a short
10628 *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
10629 method only got called if p,q,dmp1,dmq1,iqmp components were present,
10630 otherwise bn_mod_exp was called. In the case of hardware keys for example
10631 no private key components need be present and it might store extra data
10632 in the RSA structure, which cannot be accessed from bn_mod_exp.
10633 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
10634 private key operations.
10637 *) Added support for SPARC Linux.
10640 *) pem_password_cb function type incompatibly changed from
10641 typedef int pem_password_cb(char *buf, int size, int rwflag);
10643 ....(char *buf, int size, int rwflag, void *userdata);
10644 so that applications can pass data to their callbacks:
10645 The PEM[_ASN1]_{read,write}... functions and macros now take an
10646 additional void * argument, which is just handed through whenever
10647 the password callback is called.
10648 [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller]
10650 New function SSL_CTX_set_default_passwd_cb_userdata.
10652 Compatibility note: As many C implementations push function arguments
10653 onto the stack in reverse order, the new library version is likely to
10654 interoperate with programs that have been compiled with the old
10655 pem_password_cb definition (PEM_whatever takes some data that
10656 happens to be on the stack as its last argument, and the callback
10657 just ignores this garbage); but there is no guarantee whatsoever that
10660 *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
10661 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
10662 problems not only on Windows, but also on some Unix platforms.
10663 To avoid problematic command lines, these definitions are now in an
10664 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
10665 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
10668 *) MIPS III/IV assembler module is reimplemented.
10671 *) More DES library cleanups: remove references to srand/rand and
10672 delete an unused file.
10675 *) Add support for the the free Netwide assembler (NASM) under Win32,
10676 since not many people have MASM (ml) and it can be hard to obtain.
10677 This is currently experimental but it seems to work OK and pass all
10678 the tests. Check out INSTALL.W32 for info.
10681 *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
10682 without temporary keys kept an extra copy of the server key,
10683 and connections with temporary keys did not free everything in case
10687 *) New function RSA_check_key and new openssl rsa option -check
10688 for verifying the consistency of RSA keys.
10689 [Ulf Moeller, Bodo Moeller]
10691 *) Various changes to make Win32 compile work:
10692 1. Casts to avoid "loss of data" warnings in p5_crpt2.c
10693 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
10694 comparison" warnings.
10695 3. Add sk_<TYPE>_sort to DEF file generator and do make update.
10698 *) Add a debugging option to PKCS#5 v2 key generation function: when
10699 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
10700 derived keys are printed to stderr.
10703 *) Copy the flags in ASN1_STRING_dup().
10704 [Roman E. Pavlov <pre@mo.msk.ru>]
10706 *) The x509 application mishandled signing requests containing DSA
10707 keys when the signing key was also DSA and the parameters didn't match.
10709 It was supposed to omit the parameters when they matched the signing key:
10710 the verifying software was then supposed to automatically use the CA's
10711 parameters if they were absent from the end user certificate.
10713 Omitting parameters is no longer recommended. The test was also
10714 the wrong way round! This was probably due to unusual behaviour in
10715 EVP_cmp_parameters() which returns 1 if the parameters match.
10716 This meant that parameters were omitted when they *didn't* match and
10717 the certificate was useless. Certificates signed with 'ca' didn't have
10719 [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>]
10721 *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
10722 The interface is as follows:
10723 Applications can use
10724 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
10725 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
10726 "off" is now the default.
10727 The library internally uses
10728 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
10729 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
10730 to disable memory-checking temporarily.
10732 Some inconsistent states that previously were possible (and were
10733 even the default) are now avoided.
10735 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
10736 with each memory chunk allocated; this is occasionally more helpful
10737 than just having a counter.
10739 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
10741 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
10745 *) Introduce "mode" for SSL structures (with defaults in SSL_CTX),
10746 which largely parallels "options", but is for changing API behaviour,
10747 whereas "options" are about protocol behaviour.
10748 Initial "mode" flags are:
10750 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when
10751 a single record has been written.
10752 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write
10753 retries use the same buffer location.
10754 (But all of the contents must be
10758 *) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options
10761 *) Fix problems with no-hmac etc.
10762 [Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>]
10764 *) New functions RSA_get_default_method(), RSA_set_method() and
10765 RSA_get_method(). These allows replacement of RSA_METHODs without having
10766 to mess around with the internals of an RSA structure.
10769 *) Fix memory leaks in DSA_do_sign and DSA_is_prime.
10770 Also really enable memory leak checks in openssl.c and in some
10772 [Chad C. Mulligan, Bodo Moeller]
10774 *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
10775 up the length of negative integers. This has now been simplified to just
10776 store the length when it is first determined and use it later, rather
10777 than trying to keep track of where data is copied and updating it to
10779 [Steve Henson, reported by Brien Wheeler
10780 <bwheeler@authentica-security.com>]
10782 *) Add a new function PKCS7_signatureVerify. This allows the verification
10783 of a PKCS#7 signature but with the signing certificate passed to the
10784 function itself. This contrasts with PKCS7_dataVerify which assumes the
10785 certificate is present in the PKCS#7 structure. This isn't always the
10786 case: certificates can be omitted from a PKCS#7 structure and be
10787 distributed by "out of band" means (such as a certificate database).
10790 *) Complete the PEM_* macros with DECLARE_PEM versions to replace the
10791 function prototypes in pem.h, also change util/mkdef.pl to add the
10792 necessary function names.
10795 *) mk1mf.pl (used by Windows builds) did not properly read the
10796 options set by Configure in the top level Makefile, and Configure
10797 was not even able to write more than one option correctly.
10798 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
10801 *) New functions CONF_load_bio() and CONF_load_fp() to allow a config
10802 file to be loaded from a BIO or FILE pointer. The BIO version will
10803 for example allow memory BIOs to contain config info.
10806 *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
10807 Whoever hopes to achieve shared-library compatibility across versions
10808 must use this, not the compile-time macro.
10809 (Exercise 0.9.4: Which is the minimum library version required by
10811 Note: All this applies only to multi-threaded programs, others don't
10815 *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests
10816 through a BIO pair triggered the default case, i.e.
10817 SSLerr(...,SSL_R_UNKNOWN_STATE).
10820 *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
10821 can use the SSL library even if none of the specific BIOs is
10825 *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
10826 for the encoded length.
10827 [Jeon KyoungHo <khjeon@sds.samsung.co.kr>]
10829 *) Add initial documentation of the X509V3 functions.
10832 *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and
10833 PEM_write_bio_PKCS8PrivateKey() that are equivalent to
10834 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
10835 secure PKCS#8 private key format with a high iteration count.
10838 *) Fix determination of Perl interpreter: A perl or perl5
10839 _directory_ in $PATH was also accepted as the interpreter.
10840 [Ralf S. Engelschall]
10842 *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking
10843 wrong with it but it was very old and did things like calling
10844 PEM_ASN1_read() directly and used MD5 for the hash not to mention some
10845 unusual formatting.
10848 *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed
10849 to use the new extension code.
10852 *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
10853 with macros. This should make it easier to change their form, add extra
10854 arguments etc. Fix a few PEM prototypes which didn't have cipher as a
10858 *) Add to configuration table a new entry that can specify an alternative
10859 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
10860 according to Mark Crispin <MRC@Panda.COM>.
10864 *) DES CBC did not update the IV. Weird.
10867 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
10868 Changing the behaviour of the former might break existing programs --
10869 where IV updating is needed, des_ncbc_encrypt can be used.
10872 *) When bntest is run from "make test" it drives bc to check its
10873 calculations, as well as internally checking them. If an internal check
10874 fails, it needs to cause bc to give a non-zero result or make test carries
10875 on without noticing the failure. Fixed.
10878 *) DES library cleanups.
10881 *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
10882 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
10883 ciphers. NOTE: although the key derivation function has been verified
10884 against some published test vectors it has not been extensively tested
10885 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
10889 *) Instead of "mkdir -p", which is not fully portable, use new
10890 Perl script "util/mkdir-p.pl".
10893 *) Rewrite the way password based encryption (PBE) is handled. It used to
10894 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
10895 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
10896 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
10897 the 'parameter' field of the AlgorithmIdentifier is passed to the
10898 underlying key generation function so it must do its own ASN1 parsing.
10899 This has also changed the EVP_PBE_CipherInit() function which now has a
10900 'parameter' argument instead of literal salt and iteration count values
10901 and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
10904 *) Support for PKCS#5 v1.5 compatible password based encryption algorithms
10905 and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
10906 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
10907 KEY" because this clashed with PKCS#8 unencrypted string. Since this
10908 value was just used as a "magic string" and not used directly its
10909 value doesn't matter.
10912 *) Introduce some semblance of const correctness to BN. Shame C doesn't
10916 *) "linux-sparc64" configuration (ultrapenguin).
10917 [Ray Miller <ray.miller@oucs.ox.ac.uk>]
10918 "linux-sparc" configuration.
10919 [Christian Forster <fo@hawo.stw.uni-erlangen.de>]
10921 *) config now generates no-xxx options for missing ciphers.
10924 *) Support the EBCDIC character set (work in progress).
10925 File ebcdic.c not yet included because it has a different license.
10926 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
10928 *) Support BS2000/OSD-POSIX.
10929 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
10931 *) Make callbacks for key generation use void * instead of char *.
10934 *) Make S/MIME samples compile (not yet tested).
10937 *) Additional typesafe stacks.
10940 *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
10944 Changes between 0.9.3 and 0.9.3a [29 May 1999]
10946 *) New configuration variant "sco5-gcc".
10948 *) Updated some demos.
10949 [Sean O Riordain, Wade Scholine]
10951 *) Add missing BIO_free at exit of pkcs12 application.
10954 *) Fix memory leak in conf.c.
10957 *) Updates for Win32 to assembler version of MD5.
10960 *) Set #! path to perl in apps/der_chop to where we found it
10961 instead of using a fixed path.
10964 *) SHA library changes for irix64-mips4-cc.
10967 *) Improvements for VMS support.
10971 Changes between 0.9.2b and 0.9.3 [24 May 1999]
10973 *) Bignum library bug fix. IRIX 6 passes "make test" now!
10974 This also avoids the problems with SC4.2 and unpatched SC5.
10975 [Andy Polyakov <appro@fy.chalmers.se>]
10977 *) New functions sk_num, sk_value and sk_set to replace the previous macros.
10978 These are required because of the typesafe stack would otherwise break
10979 existing code. If old code used a structure member which used to be STACK
10980 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
10981 sk_num or sk_value it would produce an error because the num, data members
10982 are not present in STACK_OF. Now it just produces a warning. sk_set
10983 replaces the old method of assigning a value to sk_value
10984 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
10985 that does this will no longer work (and should use sk_set instead) but
10986 this could be regarded as a "questionable" behaviour anyway.
10989 *) Fix most of the other PKCS#7 bugs. The "experimental" code can now
10990 correctly handle encrypted S/MIME data.
10993 *) Change type of various DES function arguments from des_cblock
10994 (which means, in function argument declarations, pointer to char)
10995 to des_cblock * (meaning pointer to array with 8 char elements),
10996 which allows the compiler to do more typechecking; it was like
10997 that back in SSLeay, but with lots of ugly casts.
10999 Introduce new type const_des_cblock.
11002 *) Reorganise the PKCS#7 library and get rid of some of the more obvious
11003 problems: find RecipientInfo structure that matches recipient certificate
11004 and initialise the ASN1 structures properly based on passed cipher.
11007 *) Belatedly make the BN tests actually check the results.
11010 *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
11011 to and from BNs: it was completely broken. New compilation option
11012 NEG_PUBKEY_BUG to allow for some broken certificates that encode public
11013 key elements as negative integers.
11016 *) Reorganize and speed up MD5.
11017 [Andy Polyakov <appro@fy.chalmers.se>]
11020 [Richard Levitte <richard@levitte.org>]
11022 *) New option -out to asn1parse to allow the parsed structure to be
11023 output to a file. This is most useful when combined with the -strparse
11024 option to examine the output of things like OCTET STRINGS.
11027 *) Make SSL library a little more fool-proof by not requiring any longer
11028 that SSL_set_{accept,connect}_state be called before
11029 SSL_{accept,connect} may be used (SSL_set_..._state is omitted
11030 in many applications because usually everything *appeared* to work as
11031 intended anyway -- now it really works as intended).
11034 *) Move openssl.cnf out of lib/.
11037 *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall
11038 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
11039 -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+
11040 [Ralf S. Engelschall]
11042 *) Various fixes to the EVP and PKCS#7 code. It may now be able to
11043 handle PKCS#7 enveloped data properly.
11044 [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve]
11046 *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
11047 copying pointers. The cert_st handling is changed by this in
11048 various ways (and thus what used to be known as ctx->default_cert
11049 is now called ctx->cert, since we don't resort to s->ctx->[default_]cert
11050 any longer when s->cert does not give us what we need).
11051 ssl_cert_instantiate becomes obsolete by this change.
11052 As soon as we've got the new code right (possibly it already is?),
11053 we have solved a couple of bugs of the earlier code where s->cert
11054 was used as if it could not have been shared with other SSL structures.
11056 Note that using the SSL API in certain dirty ways now will result
11057 in different behaviour than observed with earlier library versions:
11058 Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx)
11059 does not influence s as it used to.
11061 In order to clean up things more thoroughly, inside SSL_SESSION
11062 we don't use CERT any longer, but a new structure SESS_CERT
11063 that holds per-session data (if available); currently, this is
11064 the peer's certificate chain and, for clients, the server's certificate
11065 and temporary key. CERT holds only those values that can have
11066 meaningful defaults in an SSL_CTX.
11069 *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
11070 from the internal representation. Various PKCS#7 fixes: remove some
11071 evil casts and set the enc_dig_alg field properly based on the signing
11075 *) Allow PKCS#12 password to be set from the command line or the
11076 environment. Let 'ca' get its config file name from the environment
11077 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
11081 *) Allow certificate policies extension to use an IA5STRING for the
11082 organization field. This is contrary to the PKIX definition but
11083 VeriSign uses it and IE5 only recognises this form. Document 'x509'
11087 *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
11088 without disallowing inline assembler and the like for non-pedantic builds.
11091 *) Support Borland C++ builder.
11092 [Janez Jere <jj@void.si>, modified by Ulf Möller]
11094 *) Support Mingw32.
11097 *) SHA-1 cleanups and performance enhancements.
11098 [Andy Polyakov <appro@fy.chalmers.se>]
11100 *) Sparc v8plus assembler for the bignum library.
11101 [Andy Polyakov <appro@fy.chalmers.se>]
11103 *) Accept any -xxx and +xxx compiler options in Configure.
11106 *) Update HPUX configuration.
11109 *) Add missing sk_<type>_unshift() function to safestack.h
11110 [Ralf S. Engelschall]
11112 *) New function SSL_CTX_use_certificate_chain_file that sets the
11113 "extra_cert"s in addition to the certificate. (This makes sense
11114 only for "PEM" format files, as chains as a whole are not
11118 *) Support verify_depth from the SSL API.
11119 x509_vfy.c had what can be considered an off-by-one-error:
11120 Its depth (which was not part of the external interface)
11121 was actually counting the number of certificates in a chain;
11122 now it really counts the depth.
11125 *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
11126 instead of X509err, which often resulted in confusing error
11127 messages since the error codes are not globally unique
11128 (e.g. an alleged error in ssl3_accept when a certificate
11129 didn't match the private key).
11131 *) New function SSL_CTX_set_session_id_context that allows to set a default
11132 value (so that you don't need SSL_set_session_id_context for each
11133 connection using the SSL_CTX).
11136 *) OAEP decoding bug fix.
11139 *) Support INSTALL_PREFIX for package builders, as proposed by
11143 *) New Configure options "threads" and "no-threads". For systems
11144 where the proper compiler options are known (currently Solaris
11145 and Linux), "threads" is the default.
11148 *) New script util/mklink.pl as a faster substitute for util/mklink.sh.
11151 *) Install various scripts to $(OPENSSLDIR)/misc, not to
11152 $(INSTALLTOP)/bin -- they shouldn't clutter directories
11153 such as /usr/local/bin.
11156 *) "make linux-shared" to build shared libraries.
11157 [Niels Poppe <niels@netbox.org>]
11159 *) New Configure option no-<cipher> (rsa, idea, rc5, ...).
11162 *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
11163 extension adding in x509 utility.
11166 *) Remove NOPROTO sections and error code comments.
11169 *) Partial rewrite of the DEF file generator to now parse the ANSI
11173 *) New Configure options --prefix=DIR and --openssldir=DIR.
11176 *) Complete rewrite of the error code script(s). It is all now handled
11177 by one script at the top level which handles error code gathering,
11178 header rewriting and C source file generation. It should be much better
11179 than the old method: it now uses a modified version of Ulf's parser to
11180 read the ANSI prototypes in all header files (thus the old K&R definitions
11181 aren't needed for error creation any more) and do a better job of
11182 translating function codes into names. The old 'ASN1 error code imbedded
11183 in a comment' is no longer necessary and it doesn't use .err files which
11184 have now been deleted. Also the error code call doesn't have to appear all
11185 on one line (which resulted in some large lines...).
11188 *) Change #include filenames from <foo.h> to <openssl/foo.h>.
11191 *) Change behaviour of ssl2_read when facing length-0 packets: Don't return
11192 0 (which usually indicates a closed connection), but continue reading.
11195 *) Fix some race conditions.
11198 *) Add support for CRL distribution points extension. Add Certificate
11199 Policies and CRL distribution points documentation.
11202 *) Move the autogenerated header file parts to crypto/opensslconf.h.
11205 *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
11206 8 of keying material. Merlin has also confirmed interop with this fix
11207 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
11208 [Merlin Hughes <merlin@baltimore.ie>]
11210 *) Fix lots of warnings.
11211 [Richard Levitte <levitte@stacken.kth.se>]
11213 *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
11214 the directory spec didn't end with a LIST_SEPARATOR_CHAR.
11215 [Richard Levitte <levitte@stacken.kth.se>]
11217 *) Fix problems with sizeof(long) == 8.
11218 [Andy Polyakov <appro@fy.chalmers.se>]
11220 *) Change functions to ANSI C.
11223 *) Fix typos in error codes.
11224 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller]
11226 *) Remove defunct assembler files from Configure.
11229 *) SPARC v8 assembler BIGNUM implementation.
11230 [Andy Polyakov <appro@fy.chalmers.se>]
11232 *) Support for Certificate Policies extension: both print and set.
11233 Various additions to support the r2i method this uses.
11236 *) A lot of constification, and fix a bug in X509_NAME_oneline() that could
11237 return a const string when you are expecting an allocated buffer.
11240 *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
11241 types DirectoryString and DisplayText.
11244 *) Add code to allow r2i extensions to access the configuration database,
11245 add an LHASH database driver and add several ctx helper functions.
11248 *) Fix an evil bug in bn_expand2() which caused various BN functions to
11249 fail when they extended the size of a BIGNUM.
11252 *) Various utility functions to handle SXNet extension. Modify mkdef.pl to
11253 support typesafe stack.
11256 *) Fix typo in SSL_[gs]et_options().
11257 [Nils Frostberg <nils@medcom.se>]
11259 *) Delete various functions and files that belonged to the (now obsolete)
11260 old X509V3 handling code.
11263 *) New Configure option "rsaref".
11266 *) Don't auto-generate pem.h.
11269 *) Introduce type-safe ASN.1 SETs.
11272 *) Convert various additional casted stacks to type-safe STACK_OF() variants.
11273 [Ben Laurie, Ralf S. Engelschall, Steve Henson]
11275 *) Introduce type-safe STACKs. This will almost certainly break lots of code
11276 that links with OpenSSL (well at least cause lots of warnings), but fear
11277 not: the conversion is trivial, and it eliminates loads of evil casts. A
11278 few STACKed things have been converted already. Feel free to convert more.
11279 In the fullness of time, I'll do away with the STACK type altogether.
11282 *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate
11283 specified in <certfile> by updating the entry in the index.txt file.
11284 This way one no longer has to edit the index.txt file manually for
11285 revoking a certificate. The -revoke option does the gory details now.
11286 [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall]
11288 *) Fix `openssl crl -noout -text' combination where `-noout' killed the
11289 `-text' option at all and this way the `-noout -text' combination was
11290 inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'.
11291 [Ralf S. Engelschall]
11293 *) Make sure a corresponding plain text error message exists for the
11294 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
11295 verify callback function determined that a certificate was revoked.
11296 [Ralf S. Engelschall]
11298 *) Bugfix: In test/testenc, don't test "openssl <cipher>" for
11299 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test
11300 all available cipers including rc5, which was forgotten until now.
11301 In order to let the testing shell script know which algorithms
11302 are available, a new (up to now undocumented) command
11303 "openssl list-cipher-commands" is used.
11306 *) Bugfix: s_client occasionally would sleep in select() when
11307 it should have checked SSL_pending() first.
11310 *) New functions DSA_do_sign and DSA_do_verify to provide access to
11311 the raw DSA values prior to ASN.1 encoding.
11314 *) Tweaks to Configure
11315 [Niels Poppe <niels@netbox.org>]
11317 *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
11321 *) New variables $(RANLIB) and $(PERL) in the Makefiles.
11324 *) New config option to avoid instructions that are illegal on the 80386.
11325 The default code is faster, but requires at least a 486.
11328 *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
11329 SSL2_SERVER_VERSION (not used at all) macros, which are now the
11330 same as SSL2_VERSION anyway.
11333 *) New "-showcerts" option for s_client.
11336 *) Still more PKCS#12 integration. Add pkcs12 application to openssl
11337 application. Various cleanups and fixes.
11340 *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
11341 modify error routines to work internally. Add error codes and PBE init
11342 to library startup routines.
11345 *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and
11346 packing functions to asn1 and evp. Changed function names and error
11347 codes along the way.
11350 *) PKCS12 integration: and so it begins... First of several patches to
11351 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
11352 objects to objects.h
11355 *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1
11356 and display support for Thawte strong extranet extension.
11359 *) Add LinuxPPC support.
11360 [Jeff Dubrule <igor@pobox.org>]
11362 *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
11363 bn_div_words in alpha.s.
11364 [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie]
11366 *) Make sure the RSA OAEP test is skipped under -DRSAref because
11367 OAEP isn't supported when OpenSSL is built with RSAref.
11368 [Ulf Moeller <ulf@fitug.de>]
11370 *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
11371 so they no longer are missing under -DNOPROTO.
11372 [Soren S. Jorvang <soren@t.dk>]
11375 Changes between 0.9.1c and 0.9.2b [22 Mar 1999]
11377 *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
11378 doesn't work when the session is reused. Coming soon!
11381 *) Fix a security hole, that allows sessions to be reused in the wrong
11382 context thus bypassing client cert protection! All software that uses
11383 client certs and session caches in multiple contexts NEEDS PATCHING to
11384 allow session reuse! A fuller solution is in the works.
11385 [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)]
11387 *) Some more source tree cleanups (removed obsolete files
11388 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
11389 permission on "config" script to be executable) and a fix for the INSTALL
11391 [Ulf Moeller <ulf@fitug.de>]
11393 *) Remove some legacy and erroneous uses of malloc, free instead of
11395 [Lennart Bang <lob@netstream.se>, with minor changes by Steve]
11397 *) Make rsa_oaep_test return non-zero on error.
11398 [Ulf Moeller <ulf@fitug.de>]
11400 *) Add support for native Solaris shared libraries. Configure
11401 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
11402 if someone would make that last step automatic.
11403 [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>]
11405 *) ctx_size was not built with the right compiler during "make links". Fixed.
11408 *) Change the meaning of 'ALL' in the cipher list. It now means "everything
11409 except NULL ciphers". This means the default cipher list will no longer
11410 enable NULL ciphers. They need to be specifically enabled e.g. with
11411 the string "DEFAULT:eNULL".
11414 *) Fix to RSA private encryption routines: if p < q then it would
11415 occasionally produce an invalid result. This will only happen with
11416 externally generated keys because OpenSSL (and SSLeay) ensure p > q.
11419 *) Be less restrictive and allow also `perl util/perlpath.pl
11420 /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin',
11421 because this way one can also use an interpreter named `perl5' (which is
11422 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
11423 installed as `perl').
11424 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
11426 *) Let util/clean-depend.pl work also with older Perl 5.00x versions.
11427 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
11429 *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
11430 advapi32.lib to Win32 build and change the pem test comparison
11431 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
11432 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
11433 and crypto/des/ede_cbcm_enc.c.
11436 *) DES quad checksum was broken on big-endian architectures. Fixed.
11439 *) Comment out two functions in bio.h that aren't implemented. Fix up the
11440 Win32 test batch file so it (might) work again. The Win32 test batch file
11441 is horrible: I feel ill....
11444 *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
11445 in e_os.h. Audit of header files to check ANSI and non ANSI
11446 sections: 10 functions were absent from non ANSI section and not exported
11447 from Windows DLLs. Fixed up libeay.num for new functions.
11450 *) Make `openssl version' output lines consistent.
11451 [Ralf S. Engelschall]
11453 *) Fix Win32 symbol export lists for BIO functions: Added
11454 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
11455 to ms/libeay{16,32}.def.
11456 [Ralf S. Engelschall]
11458 *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
11459 fine under Unix and passes some trivial tests I've now added. But the
11460 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
11461 added to make sure no one expects that this stuff really works in the
11462 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources
11463 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
11465 [Ralf S. Engelschall]
11467 *) Fix the generation of two part addresses in perl.
11468 [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie]
11470 *) Add config entry for Linux on MIPS.
11471 [John Tobey <jtobey@channel1.com>]
11473 *) Make links whenever Configure is run, unless we are on Windoze.
11476 *) Permit extensions to be added to CRLs using crl_section in openssl.cnf.
11477 Currently only issuerAltName and AuthorityKeyIdentifier make any sense
11481 *) Add a useful kludge to allow package maintainers to specify compiler and
11482 other platforms details on the command line without having to patch the
11483 Configure script everytime: One now can use ``perl Configure
11484 <id>:<details>'', i.e. platform ids are allowed to have details appended
11485 to them (separated by colons). This is treated as there would be a static
11486 pre-configured entry in Configure's %table under key <id> with value
11487 <details> and ``perl Configure <id>'' is called. So, when you want to
11488 perform a quick test-compile under FreeBSD 3.1 with pgcc and without
11489 assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"''
11490 now, which overrides the FreeBSD-elf entry on-the-fly.
11491 [Ralf S. Engelschall]
11493 *) Disable new TLS1 ciphersuites by default: they aren't official yet.
11496 *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
11497 on the `perl Configure ...' command line. This way one can compile
11498 OpenSSL libraries with Position Independent Code (PIC) which is needed
11499 for linking it into DSOs.
11500 [Ralf S. Engelschall]
11502 *) Remarkably, export ciphers were totally broken and no-one had noticed!
11506 *) Cleaned up the LICENSE document: The official contact for any license
11507 questions now is the OpenSSL core team under openssl-core@openssl.org.
11508 And add a paragraph about the dual-license situation to make sure people
11509 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
11510 to the OpenSSL toolkit.
11511 [Ralf S. Engelschall]
11513 *) General source tree makefile cleanups: Made `making xxx in yyy...'
11514 display consistent in the source tree and replaced `/bin/rm' by `rm'.
11515 Additionally cleaned up the `make links' target: Remove unnecessary
11516 semicolons, subsequent redundant removes, inline point.sh into mklink.sh
11517 to speed processing and no longer clutter the display with confusing
11518 stuff. Instead only the actually done links are displayed.
11519 [Ralf S. Engelschall]
11521 *) Permit null encryption ciphersuites, used for authentication only. It used
11522 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
11523 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
11527 *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
11528 signed attributes when verifying signatures (this would break them),
11529 the detached data encoding was wrong and public keys obtained using
11530 X509_get_pubkey() weren't freed.
11533 *) Add text documentation for the BUFFER functions. Also added a work around
11534 to a Win95 console bug. This was triggered by the password read stuff: the
11535 last character typed gets carried over to the next fread(). If you were
11536 generating a new cert request using 'req' for example then the last
11537 character of the passphrase would be CR which would then enter the first
11541 *) Added the new `Includes OpenSSL Cryptography Software' button as
11542 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
11543 button and can be used by applications based on OpenSSL to show the
11544 relationship to the OpenSSL project.
11545 [Ralf S. Engelschall]
11547 *) Remove confusing variables in function signatures in files
11548 ssl/ssl_lib.c and ssl/ssl.h.
11549 [Lennart Bong <lob@kulthea.stacken.kth.se>]
11551 *) Don't install bss_file.c under PREFIX/include/
11552 [Lennart Bong <lob@kulthea.stacken.kth.se>]
11554 *) Get the Win32 compile working again. Modify mkdef.pl so it can handle
11555 functions that return function pointers and has support for NT specific
11556 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
11557 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
11558 unsigned to signed types: this was killing the Win32 compile.
11561 *) Add new certificate file to stack functions,
11562 SSL_add_dir_cert_subjects_to_stack() and
11563 SSL_add_file_cert_subjects_to_stack(). These largely supplant
11564 SSL_load_client_CA_file(), and can be used to add multiple certs easily
11565 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
11566 This means that Apache-SSL and similar packages don't have to mess around
11567 to add as many CAs as they want to the preferred list.
11570 *) Experiment with doxygen documentation. Currently only partially applied to
11572 See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with
11573 openssl.doxy as the configuration file.
11576 *) Get rid of remaining C++-style comments which strict C compilers hate.
11577 [Ralf S. Engelschall, pointed out by Carlos Amengual]
11579 *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
11580 compiled in by default: it has problems with large keys.
11583 *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
11584 DH private keys and/or callback functions which directly correspond to
11585 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
11586 is needed for applications which have to configure certificates on a
11587 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
11589 For the RSA certificate situation is makes no difference, but
11590 for the DSA certificate situation this fixes the "no shared cipher"
11591 problem where the OpenSSL cipher selection procedure failed because the
11592 temporary keys were not overtaken from the context and the API provided
11593 no way to reconfigure them.
11594 The new functions now let applications reconfigure the stuff and they
11595 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
11596 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new
11597 non-public-API function ssl_cert_instantiate() is used as a helper
11598 function and also to reduce code redundancy inside ssl_rsa.c.
11599 [Ralf S. Engelschall]
11601 *) Move s_server -dcert and -dkey options out of the undocumented feature
11602 area because they are useful for the DSA situation and should be
11603 recognized by the users.
11604 [Ralf S. Engelschall]
11606 *) Fix the cipher decision scheme for export ciphers: the export bits are
11607 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
11608 SSL_EXP_MASK. So, the original variable has to be used instead of the
11609 already masked variable.
11610 [Richard Levitte <levitte@stacken.kth.se>]
11612 *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c
11613 [Richard Levitte <levitte@stacken.kth.se>]
11615 *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
11616 from `int' to `unsigned int' because it's a length and initialized by
11617 EVP_DigestFinal() which expects an `unsigned int *'.
11618 [Richard Levitte <levitte@stacken.kth.se>]
11620 *) Don't hard-code path to Perl interpreter on shebang line of Configure
11621 script. Instead use the usual Shell->Perl transition trick.
11622 [Ralf S. Engelschall]
11624 *) Make `openssl x509 -noout -modulus' functional also for DSA certificates
11625 (in addition to RSA certificates) to match the behaviour of `openssl dsa
11626 -noout -modulus' as it's already the case for `openssl rsa -noout
11627 -modulus'. For RSA the -modulus is the real "modulus" while for DSA
11628 currently the public key is printed (a decision which was already done by
11629 `openssl dsa -modulus' in the past) which serves a similar purpose.
11630 Additionally the NO_RSA no longer completely removes the whole -modulus
11631 option; it now only avoids using the RSA stuff. Same applies to NO_DSA
11633 [Ralf S. Engelschall]
11635 *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
11636 BIO. See the source (crypto/evp/bio_ok.c) for more info.
11637 [Arne Ansper <arne@ats.cyber.ee>]
11639 *) Dump the old yucky req code that tried (and failed) to allow raw OIDs
11640 to be added. Now both 'req' and 'ca' can use new objects defined in the
11644 *) Add cool BIO that does syslog (or event log on NT).
11645 [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie]
11647 *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
11648 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
11649 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
11650 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
11653 *) Add preliminary config info for new extension code.
11656 *) Make RSA_NO_PADDING really use no padding.
11657 [Ulf Moeller <ulf@fitug.de>]
11659 *) Generate errors when private/public key check is done.
11662 *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
11663 for some CRL extensions and new objects added.
11666 *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private
11667 key usage extension and fuller support for authority key id.
11670 *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
11671 padding method for RSA, which is recommended for new applications in PKCS
11672 #1 v2.0 (RFC 2437, October 1998).
11673 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
11674 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
11675 against Bleichbacher's attack on RSA.
11676 [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
11679 *) Updates to the new SSL compression code
11680 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
11682 *) Fix so that the version number in the master secret, when passed
11683 via RSA, checks that if TLS was proposed, but we roll back to SSLv3
11684 (because the server will not accept higher), that the version number
11685 is 0x03,0x01, not 0x03,0x00
11686 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
11688 *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
11689 leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
11690 in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
11693 *) Support for RAW extensions where an arbitrary extension can be
11694 created by including its DER encoding. See apps/openssl.cnf for
11698 *) Make sure latest Perl versions don't interpret some generated C array
11699 code as Perl array code in the crypto/err/err_genc.pl script.
11700 [Lars Weber <3weber@informatik.uni-hamburg.de>]
11702 *) Modify ms/do_ms.bat to not generate assembly language makefiles since
11703 not many people have the assembler. Various Win32 compilation fixes and
11704 update to the INSTALL.W32 file with (hopefully) more accurate Win32
11705 build instructions.
11708 *) Modify configure script 'Configure' to automatically create crypto/date.h
11709 file under Win32 and also build pem.h from pem.org. New script
11710 util/mkfiles.pl to create the MINFO file on environments that can't do a
11711 'make files': perl util/mkfiles.pl >MINFO should work.
11714 *) Major rework of DES function declarations, in the pursuit of correctness
11715 and purity. As a result, many evil casts evaporated, and some weirdness,
11716 too. You may find this causes warnings in your code. Zapping your evil
11717 casts will probably fix them. Mostly.
11720 *) Fix for a typo in asn1.h. Bug fix to object creation script
11721 obj_dat.pl. It considered a zero in an object definition to mean
11722 "end of object": none of the objects in objects.h have any zeros
11723 so it wasn't spotted.
11724 [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>]
11726 *) Add support for Triple DES Cipher Block Chaining with Output Feedback
11727 Masking (CBCM). In the absence of test vectors, the best I have been able
11728 to do is check that the decrypt undoes the encrypt, so far. Send me test
11729 vectors if you have them.
11732 *) Correct calculation of key length for export ciphers (too much space was
11733 allocated for null ciphers). This has not been tested!
11736 *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage
11737 message is now correct (it understands "crypto" and "ssl" on its
11738 command line). There is also now an "update" option. This will update
11739 the util/ssleay.num and util/libeay.num files with any new functions.
11741 perl util/mkdef.pl crypto ssl update
11742 it will update them.
11745 *) Overhauled the Perl interface (perl/*):
11746 - ported BN stuff to OpenSSL's different BN library
11747 - made the perl/ source tree CVS-aware
11748 - renamed the package from SSLeay to OpenSSL (the files still contain
11749 their history because I've copied them in the repository)
11750 - removed obsolete files (the test scripts will be replaced
11751 by better Test::Harness variants in the future)
11752 [Ralf S. Engelschall]
11754 *) First cut for a very conservative source tree cleanup:
11755 1. merge various obsolete readme texts into doc/ssleay.txt
11756 where we collect the old documents and readme texts.
11757 2. remove the first part of files where I'm already sure that we no
11758 longer need them because of three reasons: either they are just temporary
11759 files which were left by Eric or they are preserved original files where
11760 I've verified that the diff is also available in the CVS via "cvs diff
11761 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
11762 the crypto/md/ stuff).
11763 [Ralf S. Engelschall]
11765 *) More extension code. Incomplete support for subject and issuer alt
11766 name, issuer and authority key id. Change the i2v function parameters
11767 and add an extra 'crl' parameter in the X509V3_CTX structure: guess
11768 what that's for :-) Fix to ASN1 macro which messed up
11769 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
11772 *) Preliminary support for ENUMERATED type. This is largely copied from the
11776 *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
11777 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
11779 *) Make sure `make rehash' target really finds the `openssl' program.
11780 [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
11782 *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
11783 like to hear about it if this slows down other processors.
11786 *) Add CygWin32 platform information to Configure script.
11787 [Alan Batie <batie@aahz.jf.intel.com>]
11789 *) Fixed ms/32all.bat script: `no_asm' -> `no-asm'
11790 [Rainer W. Gerling <gerling@mpg-gv.mpg.de>]
11792 *) New program nseq to manipulate netscape certificate sequences
11795 *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
11799 *) Fixes to BN code. Previously the default was to define BN_RECURSION
11800 but the BN code had some problems that would cause failures when
11801 doing certificate verification and some other functions.
11802 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
11804 *) Add ASN1 and PEM code to support netscape certificate sequences.
11807 *) Add ASN1 and PEM code to support netscape certificate sequences.
11810 *) Add several PKIX and private extended key usage OIDs.
11813 *) Modify the 'ca' program to handle the new extension code. Modify
11814 openssl.cnf for new extension format, add comments.
11817 *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
11818 and add a sample to openssl.cnf so req -x509 now adds appropriate
11822 *) Continued X509 V3 changes. Add to other makefiles, integrate with the
11823 error code, add initial support to X509_print() and x509 application.
11826 *) Takes a deep breath and start adding X509 V3 extension support code. Add
11827 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
11828 stuff is currently isolated and isn't even compiled yet.
11831 *) Continuing patches for GeneralizedTime. Fix up certificate and CRL
11832 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
11833 Removed the versions check from X509 routines when loading extensions:
11834 this allows certain broken certificates that don't set the version
11835 properly to be processed.
11838 *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
11839 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
11840 can still be regenerated with "make depend".
11843 *) Spelling mistake in C version of CAST-128.
11844 [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>]
11846 *) Changes to the error generation code. The perl script err-code.pl
11847 now reads in the old error codes and retains the old numbers, only
11848 adding new ones if necessary. It also only changes the .err files if new
11849 codes are added. The makefiles have been modified to only insert errors
11850 when needed (to avoid needlessly modifying header files). This is done
11851 by only inserting errors if the .err file is newer than the auto generated
11852 C file. To rebuild all the error codes from scratch (the old behaviour)
11853 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
11854 or delete all the .err files.
11857 *) CAST-128 was incorrectly implemented for short keys. The C version has
11858 been fixed, but is untested. The assembler versions are also fixed, but
11859 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
11860 to regenerate it if needed.
11861 [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
11862 Hagino <itojun@kame.net>]
11864 *) File was opened incorrectly in randfile.c.
11865 [Ulf Möller <ulf@fitug.de>]
11867 *) Beginning of support for GeneralizedTime. d2i, i2d, check and print
11868 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
11869 GeneralizedTime. ASN1_TIME is the proper type used in certificates et
11870 al: it's just almost always a UTCTime. Note this patch adds new error
11871 codes so do a "make errors" if there are problems.
11874 *) Correct Linux 1 recognition in config.
11875 [Ulf Möller <ulf@fitug.de>]
11877 *) Remove pointless MD5 hash when using DSA keys in ca.
11878 [Anonymous <nobody@replay.com>]
11880 *) Generate an error if given an empty string as a cert directory. Also
11881 generate an error if handed NULL (previously returned 0 to indicate an
11882 error, but didn't set one).
11883 [Ben Laurie, reported by Anonymous <nobody@replay.com>]
11885 *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
11888 *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
11889 parameters. This was causing a warning which killed off the Win32 compile.
11892 *) Remove C++ style comments from crypto/bn/bn_local.h.
11893 [Neil Costigan <neil.costigan@celocom.com>]
11895 *) The function OBJ_txt2nid was broken. It was supposed to return a nid
11896 based on a text string, looking up short and long names and finally
11897 "dot" format. The "dot" format stuff didn't work. Added new function
11898 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
11899 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
11900 OID is not part of the table.
11903 *) Add prototypes to X509 lookup/verify methods, fixing a bug in
11904 X509_LOOKUP_by_alias().
11907 *) Sort openssl functions by name.
11910 *) Get the gendsa program working (hopefully) and add it to app list. Remove
11911 encryption from sample DSA keys (in case anyone is interested the password
11915 *) Make _all_ *_free functions accept a NULL pointer.
11916 [Frans Heymans <fheymans@isaserver.be>]
11918 *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use
11920 [Anonymous <nobody@replay.com>]
11922 *) s_server should send the CAfile as acceptable CAs, not its own cert.
11923 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
11925 *) Don't blow it for numeric -newkey arguments to apps/req.
11926 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
11928 *) Temp key "for export" tests were wrong in s3_srvr.c.
11929 [Anonymous <nobody@replay.com>]
11931 *) Add prototype for temp key callback functions
11932 SSL_CTX_set_tmp_{rsa,dh}_callback().
11935 *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
11936 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
11939 *) X509_name_add_entry() freed the wrong thing after an error.
11940 [Arne Ansper <arne@ats.cyber.ee>]
11942 *) rsa_eay.c would attempt to free a NULL context.
11943 [Arne Ansper <arne@ats.cyber.ee>]
11945 *) BIO_s_socket() had a broken should_retry() on Windoze.
11946 [Arne Ansper <arne@ats.cyber.ee>]
11948 *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
11949 [Arne Ansper <arne@ats.cyber.ee>]
11951 *) Make sure the already existing X509_STORE->depth variable is initialized
11952 in X509_STORE_new(), but document the fact that this variable is still
11953 unused in the certificate verification process.
11954 [Ralf S. Engelschall]
11956 *) Fix the various library and apps files to free up pkeys obtained from
11957 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
11960 *) Fix reference counting in X509_PUBKEY_get(). This makes
11961 demos/maurice/example2.c work, amongst others, probably.
11962 [Steve Henson and Ben Laurie]
11964 *) First cut of a cleanup for apps/. First the `ssleay' program is now named
11965 `openssl' and second, the shortcut symlinks for the `openssl <command>'
11966 are no longer created. This way we have a single and consistent command
11967 line interface `openssl <command>', similar to `cvs <command>'.
11968 [Ralf S. Engelschall, Paul Sutton and Ben Laurie]
11970 *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
11971 BIT STRING wrapper always have zero unused bits.
11974 *) Add CA.pl, perl version of CA.sh, add extended key usage OID.
11977 *) Make the top-level INSTALL documentation easier to understand.
11980 *) Makefiles updated to exit if an error occurs in a sub-directory
11981 make (including if user presses ^C) [Paul Sutton]
11983 *) Make Montgomery context stuff explicit in RSA data structure.
11986 *) Fix build order of pem and err to allow for generated pem.h.
11989 *) Fix renumbering bug in X509_NAME_delete_entry().
11992 *) Enhanced the err-ins.pl script so it makes the error library number
11993 global and can add a library name. This is needed for external ASN1 and
11994 other error libraries.
11997 *) Fixed sk_insert which never worked properly.
12000 *) Fix ASN1 macros so they can handle indefinite length constructed
12001 EXPLICIT tags. Some non standard certificates use these: they can now
12005 *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
12006 into a single doc/ssleay.txt bundle. This way the information is still
12007 preserved but no longer messes up this directory. Now it's new room for
12008 the new set of documentation files.
12009 [Ralf S. Engelschall]
12011 *) SETs were incorrectly DER encoded. This was a major pain, because they
12012 shared code with SEQUENCEs, which aren't coded the same. This means that
12013 almost everything to do with SETs or SEQUENCEs has either changed name or
12014 number of arguments.
12015 [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>]
12017 *) Fix test data to work with the above.
12020 *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
12021 was already fixed by Eric for 0.9.1 it seems.
12022 [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>]
12024 *) Autodetect FreeBSD3.
12027 *) Fix various bugs in Configure. This affects the following platforms:
12031 unixware-2.0-pentium
12035 *) Eliminate generated files from CVS. Reorder tests to regenerate files
12036 before they are needed.
12039 *) Generate Makefile.ssl from Makefile.org (to keep CVS happy).
12043 Changes between 0.9.1b and 0.9.1c [23-Dec-1998]
12045 *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
12046 changed SSLeay to OpenSSL in version strings.
12047 [Ralf S. Engelschall]
12049 *) Some fixups to the top-level documents.
12052 *) Fixed the nasty bug where rsaref.h was not found under compile-time
12053 because the symlink to include/ was missing.
12054 [Ralf S. Engelschall]
12056 *) Incorporated the popular no-RSA/DSA-only patches
12057 which allow to compile a RSA-free SSLeay.
12058 [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall]
12060 *) Fixed nasty rehash problem under `make -f Makefile.ssl links'
12061 when "ssleay" is still not found.
12062 [Ralf S. Engelschall]
12064 *) Added more platforms to Configure: Cray T3E, HPUX 11,
12065 [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>]
12067 *) Updated the README file.
12068 [Ralf S. Engelschall]
12070 *) Added various .cvsignore files in the CVS repository subdirs
12071 to make a "cvs update" really silent.
12072 [Ralf S. Engelschall]
12074 *) Recompiled the error-definition header files and added
12075 missing symbols to the Win32 linker tables.
12076 [Ralf S. Engelschall]
12078 *) Cleaned up the top-level documents;
12079 o new files: CHANGES and LICENSE
12080 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
12081 o merged COPYRIGHT into LICENSE
12082 o removed obsolete TODO file
12083 o renamed MICROSOFT to INSTALL.W32
12084 [Ralf S. Engelschall]
12086 *) Removed dummy files from the 0.9.1b source tree:
12087 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
12088 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
12089 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
12090 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
12091 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
12092 [Ralf S. Engelschall]
12094 *) Added various platform portability fixes.
12097 *) The Genesis of the OpenSSL rpject:
12098 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
12099 Young and Tim J. Hudson created while they were working for C2Net until
12101 [The OpenSSL Project]
12104 Changes between 0.9.0b and 0.9.1b [not released]
12106 *) Updated a few CA certificates under certs/
12109 *) Changed some BIGNUM api stuff.
12112 *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
12113 DGUX x86, Linux Alpha, etc.
12116 *) New COMP library [crypto/comp/] for SSL Record Layer Compression:
12117 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
12121 *) Add -strparse option to asn1pars program which parses nested
12123 [Dr Stephen Henson <shenson@bigfoot.com>]
12125 *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
12128 *) DSA fix for "ca" program.
12131 *) Added "-genkey" option to "dsaparam" program.
12134 *) Added RIPE MD160 (rmd160) message digest.
12137 *) Added -a (all) option to "ssleay version" command.
12140 *) Added PLATFORM define which is the id given to Configure.
12143 *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
12146 *) Extended the ASN.1 parser routines.
12149 *) Extended BIO routines to support REUSEADDR, seek, tell, etc.
12152 *) Added a BN_CTX to the BN library.
12155 *) Fixed the weak key values in DES library
12158 *) Changed API in EVP library for cipher aliases.
12161 *) Added support for RC2/64bit cipher.
12164 *) Converted the lhash library to the crypto/mem.c functions.
12167 *) Added more recognized ASN.1 object ids.
12170 *) Added more RSA padding checks for SSL/TLS.
12173 *) Added BIO proxy/filter functionality.
12176 *) Added extra_certs to SSL_CTX which can be used
12177 send extra CA certificates to the client in the CA cert chain sending
12178 process. It can be configured with SSL_CTX_add_extra_chain_cert().
12181 *) Now Fortezza is denied in the authentication phase because
12182 this is key exchange mechanism is not supported by SSLeay at all.
12185 *) Additional PKCS1 checks.
12188 *) Support the string "TLSv1" for all TLS v1 ciphers.
12191 *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
12192 ex_data index of the SSL context in the X509_STORE_CTX ex_data.
12195 *) Fixed a few memory leaks.
12198 *) Fixed various code and comment typos.
12201 *) A minor bug in ssl/s3_clnt.c where there would always be 4 0
12202 bytes sent in the client random.
12203 [Edward Bishop <ebishop@spyglass.com>]