5 Changes between 1.0.2g and 1.1.0 [xx XXX xxxx]
7 *) Automatic Darwin/OSX configuration has had a refresh, it will now
8 recognise x86_64 architectures automatically. You can still decide
9 to build for a different bitness with the environment variable
10 KERNEL_BITS (can be 32 or 64), for example:
12 KERNEL_BITS=32 ./config
16 *) Change default algorithms in pkcs8 utility to use PKCS#5 v2.0,
17 256 bit AES and HMAC with SHA256.
20 *) Remove support for MIPS o32 ABI on IRIX (and IRIX only).
23 *) Triple-DES ciphers have been moved from HIGH to MEDIUM.
26 *) To enable users to have their own config files and build file templates,
27 Configure looks in the directory indicated by the environment variable
28 OPENSSL_LOCAL_CONFIG_DIR as well as the in-source Configurations/
29 directory. On VMS, OPENSSL_LOCAL_CONFIG_DIR is expected to be a logical
30 name and is used as is.
33 *) The following datatypes were made opaque: X509_OBJECT, X509_STORE_CTX,
34 X509_STORE, X509_LOOKUP, and X509_LOOKUP_METHOD. The unused type
35 X509_CERT_FILE_CTX was removed.
38 *) "shared" builds are now the default. To create only static libraries use
39 the "no-shared" Configure option.
42 *) Remove the no-aes, no-hmac, no-rsa, no-sha and no-md5 Configure options.
43 All of these option have not worked for some while and are fundamental
47 *) Make various cleanup routines no-ops and mark them as deprecated. Most
48 global cleanup functions are no longer required because they are handled
49 via auto-deinit (see OPENSSL_init_crypto and OPENSSL_init_ssl man pages).
50 Explicitly de-initing can cause problems (e.g. where a library that uses
51 OpenSSL de-inits, but an application is still using it). The affected
52 functions are CONF_modules_free(), ENGINE_cleanup(), OBJ_cleanup(),
53 EVP_cleanup(), BIO_sock_cleanup(), CRYPTO_cleanup_all_ex_data(),
54 RAND_cleanup(), SSL_COMP_free_compression_methods(), ERR_free_strings() and
58 *) --strict-warnings no longer enables runtime debugging options
59 such as REF_DEBUG. Instead, debug options are automatically
60 enabled with '--debug' builds.
61 [Andy Polyakov, Emilia Käsper]
63 *) Made DH and DH_METHOD opaque. The structures for managing DH objects
64 have been moved out of the public header files. New functions for managing
65 these have been added.
68 *) Made RSA and RSA_METHOD opaque. The structures for managing RSA
69 objects have been moved out of the public header files. New
70 functions for managing these have been added.
73 *) Made DSA and DSA_METHOD opaque. The structures for managing DSA objects
74 have been moved out of the public header files. New functions for managing
75 these have been added.
78 *) Made BIO and BIO_METHOD opaque. The structures for managing BIOs have been
79 moved out of the public header files. New functions for managing these
83 *) Removed no-rijndael as a config option. Rijndael is an old name for AES.
86 *) Removed the mk1mf build scripts.
89 *) Headers are now wrapped, if necessary, with OPENSSL_NO_xxx, so
90 it is always safe to #include a header now.
93 *) Removed the aged BC-32 config and all its supporting scripts
96 *) Removed support for Ultrix, Netware, and OS/2.
99 *) Add support for HKDF.
102 *) Add support for blake2b and blake2s
105 *) Added support for "pipelining". Ciphers that have the
106 EVP_CIPH_FLAG_PIPELINE flag set have a capability to process multiple
107 encryptions/decryptions simultaneously. There are currently no built-in
108 ciphers with this property but the expectation is that engines will be able
109 to offer it to significantly improve throughput. Support has been extended
110 into libssl so that multiple records for a single connection can be
111 processed in one go (for >=TLS 1.1).
114 *) Added the AFALG engine. This is an async capable engine which is able to
115 offload work to the Linux kernel. In this initial version it only supports
116 AES128-CBC. The kernel must be version 4.1.0 or greater.
119 *) OpenSSL now uses a new threading API. It is no longer necessary to
120 set locking callbacks to use OpenSSL in a multi-threaded environment. There
121 are two supported threading models: pthreads and windows threads. It is
122 also possible to configure OpenSSL at compile time for "no-threads". The
123 old threading API should no longer be used. The functions have been
124 replaced with "no-op" compatibility macros.
125 [Alessandro Ghedini, Matt Caswell]
127 *) Modify behavior of ALPN to invoke callback after SNI/servername
128 callback, such that updates to the SSL_CTX affect ALPN.
131 *) Add SSL_CIPHER queries for authentication and key-exchange.
134 *) Changes to the DEFAULT cipherlist:
135 - Prefer (EC)DHE handshakes over plain RSA.
136 - Prefer AEAD ciphers over legacy ciphers.
137 - Prefer ECDSA over RSA when both certificates are available.
138 - Prefer TLSv1.2 ciphers/PRF.
139 - Remove DSS, SEED, IDEA, CAMELLIA, and AES-CCM from the
143 *) Change the ECC default curve list to be this, in order: x25519,
144 secp256r1, secp521r1, secp384r1.
147 *) RC4 based libssl ciphersuites are now classed as "weak" ciphers and are
148 disabled by default. They can be re-enabled using the
149 enable-weak-ssl-ciphers option to Configure.
152 *) If the server has ALPN configured, but supports no protocols that the
153 client advertises, send a fatal "no_application_protocol" alert.
154 This behaviour is SHALL in RFC 7301, though it isn't universally
155 implemented by other servers.
158 *) Add X25519 support.
159 Integrate support for X25519 into EC library. This includes support
160 for public and private key encoding using the format documented in
161 draft-josefsson-pkix-newcurves-01: specifically X25519 uses the
162 OID from that draft, encodes public keys using little endian
163 format in the ECPoint structure and private keys using
164 little endian form in the privateKey field of the ECPrivateKey
165 structure. TLS support complies with draft-ietf-tls-rfc4492bis-06
168 Note: the current version supports key generation, public and
169 private key encoding and ECDH key agreement using the EC API.
170 Low level point operations such as EC_POINT_add(), EC_POINT_mul()
174 *) Deprecate SRP_VBASE_get_by_user.
175 SRP_VBASE_get_by_user had inconsistent memory management behaviour.
176 In order to fix an unavoidable memory leak (CVE-2016-0798),
177 SRP_VBASE_get_by_user was changed to ignore the "fake user" SRP
178 seed, even if the seed is configured.
180 Users should use SRP_VBASE_get1_by_user instead. Note that in
181 SRP_VBASE_get1_by_user, caller must free the returned value. Note
182 also that even though configuring the SRP seed attempts to hide
183 invalid usernames by continuing the handshake with fake
184 credentials, this behaviour is not constant time and no strong
185 guarantees are made that the handshake is indistinguishable from
186 that of a valid user.
189 *) Configuration change; it's now possible to build dynamic engines
190 without having to build shared libraries and vice versa. This
191 only applies to the engines in engines/, those in crypto/engine/
192 will always be built into libcrypto (i.e. "static").
194 Building dynamic engines is enabled by default; to disable, use
195 the configuration option "disable-dynamic-engine".
197 The only requirements for building dynamic engines are the
198 presence of the DSO module and building with position independent
199 code, so they will also automatically be disabled if configuring
200 with "disable-dso" or "disable-pic".
202 The macros OPENSSL_NO_STATIC_ENGINE and OPENSSL_NO_DYNAMIC_ENGINE
203 are also taken away from openssl/opensslconf.h, as they are
207 *) Configuration change; if there is a known flag to compile
208 position independent code, it will always be applied on the
209 libcrypto and libssl object files, and never on the application
210 object files. This means other libraries that use routines from
211 libcrypto / libssl can be made into shared libraries regardless
212 of how OpenSSL was configured.
214 If this isn't desirable, the configuration options "disable-pic"
215 or "no-pic" can be used to disable the use of PIC. This will
216 also disable building shared libraries and dynamic engines.
219 *) Removed JPAKE code. It was experimental and has no wide use.
222 *) The INSTALL_PREFIX Makefile variable has been renamed to
223 DESTDIR. That makes for less confusion on what this variable
224 is for. Also, the configuration option --install_prefix is
228 *) Heartbeat for TLS has been removed and is disabled by default
229 for DTLS; configure with enable-heartbeats. Code that uses the
230 old #define's might need to be updated.
231 [Emilia Käsper, Rich Salz]
233 *) Rename REF_CHECK to REF_DEBUG.
236 *) New "unified" build system
238 The "unified" build system is aimed to be a common system for all
239 platforms we support. With it comes new support for VMS.
241 This system builds supports building in a different directory tree
242 than the source tree. It produces one Makefile (for unix family
243 or lookalikes), or one descrip.mms (for VMS).
245 The source of information to make the Makefile / descrip.mms is
246 small files called 'build.info', holding the necessary
247 information for each directory with source to compile, and a
248 template in Configurations, like unix-Makefile.tmpl or
251 We rely heavily on the perl module Text::Template.
254 *) Added support for auto-initialisation and de-initialisation of the library.
255 OpenSSL no longer requires explicit init or deinit routines to be called,
256 except in certain circumstances. See the OPENSSL_init_crypto() and
257 OPENSSL_init_ssl() man pages for further information.
260 *) The arguments to the DTLSv1_listen function have changed. Specifically the
261 "peer" argument is now expected to be a BIO_ADDR object.
263 *) Rewrite of BIO networking library. The BIO library lacked consistent
264 support of IPv6, and adding it required some more extensive
265 modifications. This introduces the BIO_ADDR and BIO_ADDRINFO types,
266 which hold all types of addresses and chains of address information.
267 It also introduces a new API, with functions like BIO_socket,
268 BIO_connect, BIO_listen, BIO_lookup and a rewrite of BIO_accept.
269 The source/sink BIOs BIO_s_connect, BIO_s_accept and BIO_s_datagram
270 have been adapted accordingly.
273 *) RSA_padding_check_PKCS1_type_1 now accepts inputs with and without
277 *) CRIME protection: disable compression by default, even if OpenSSL is
278 compiled with zlib enabled. Applications can still enable compression
279 by calling SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION), or by
280 using the SSL_CONF library to configure compression.
283 *) The signature of the session callback configured with
284 SSL_CTX_sess_set_get_cb was changed. The read-only input buffer
285 was explicitly marked as 'const unsigned char*' instead of
289 *) Always DPURIFY. Remove the use of uninitialized memory in the
290 RNG, and other conditional uses of DPURIFY. This makes -DPURIFY a no-op.
293 *) Removed many obsolete configuration items, including
294 DES_PTR, DES_RISC1, DES_RISC2, DES_INT
295 MD2_CHAR, MD2_INT, MD2_LONG
297 IDEA_SHORT, IDEA_LONG
298 RC2_SHORT, RC2_LONG, RC4_LONG, RC4_CHUNK, RC4_INDEX
299 [Rich Salz, with advice from Andy Polyakov]
301 *) Many BN internals have been moved to an internal header file.
302 [Rich Salz with help from Andy Polyakov]
304 *) Configuration and writing out the results from it has changed.
305 Files such as Makefile include/openssl/opensslconf.h and are now
306 produced through general templates, such as Makefile.in and
307 crypto/opensslconf.h.in and some help from the perl module
310 Also, the center of configuration information is no longer
311 Makefile. Instead, Configure produces a perl module in
312 configdata.pm which holds most of the config data (in the hash
313 table %config), the target data that comes from the target
314 configuration in one of the Configurations/*.conf files (in
318 *) To clarify their intended purposes, the Configure options
319 --prefix and --openssldir change their semantics, and become more
320 straightforward and less interdependent.
322 --prefix shall be used exclusively to give the location INSTALLTOP
323 where programs, scripts, libraries, include files and manuals are
324 going to be installed. The default is now /usr/local.
326 --openssldir shall be used exclusively to give the default
327 location OPENSSLDIR where certificates, private keys, CRLs are
328 managed. This is also where the default openssl.cnf gets
330 If the directory given with this option is a relative path, the
331 values of both the --prefix value and the --openssldir value will
332 be combined to become OPENSSLDIR.
333 The default for --openssldir is INSTALLTOP/ssl.
335 Anyone who uses --openssldir to specify where OpenSSL is to be
336 installed MUST change to use --prefix instead.
339 *) The GOST engine was out of date and therefore it has been removed. An up
340 to date GOST engine is now being maintained in an external repository.
341 See: https://wiki.openssl.org/index.php/Binaries. Libssl still retains
342 support for GOST ciphersuites (these are only activated if a GOST engine
346 *) EGD is no longer supported by default; use enable-egd when
348 [Ben Kaduk and Rich Salz]
350 *) The distribution now has Makefile.in files, which are used to
351 create Makefile's when Configure is run. *Configure must be run
352 before trying to build now.*
355 *) The return value for SSL_CIPHER_description() for error conditions
359 *) Support for RFC6698/RFC7671 DANE TLSA peer authentication.
361 Obtaining and performing DNSSEC validation of TLSA records is
362 the application's responsibility. The application provides
363 the TLSA records of its choice to OpenSSL, and these are then
364 used to authenticate the peer.
366 The TLSA records need not even come from DNS. They can, for
367 example, be used to implement local end-entity certificate or
368 trust-anchor "pinning", where the "pin" data takes the form
369 of TLSA records, which can augment or replace verification
370 based on the usual WebPKI public certification authorities.
373 *) Revert default OPENSSL_NO_DEPRECATED setting. Instead OpenSSL
374 continues to support deprecated interfaces in default builds.
375 However, applications are strongly advised to compile their
376 source files with -DOPENSSL_API_COMPAT=0x10100000L, which hides
377 the declarations of all interfaces deprecated in 0.9.8, 1.0.0
378 or the 1.1.0 releases.
380 In environments in which all applications have been ported to
381 not use any deprecated interfaces OpenSSL's Configure script
382 should be used with the --api=1.1.0 option to entirely remove
383 support for the deprecated features from the library and
384 unconditionally disable them in the installed headers.
385 Essentially the same effect can be achieved with the "no-deprecated"
386 argument to Configure, except that this will always restrict
387 the build to just the latest API, rather than a fixed API
390 As applications are ported to future revisions of the API,
391 they should update their compile-time OPENSSL_API_COMPAT define
392 accordingly, but in most cases should be able to continue to
393 compile with later releases.
395 The OPENSSL_API_COMPAT versions for 1.0.0, and 0.9.8 are
396 0x10000000L and 0x00908000L, respectively. However those
397 versions did not support the OPENSSL_API_COMPAT feature, and
398 so applications are not typically tested for explicit support
399 of just the undeprecated features of either release.
402 *) Add support for setting the minimum and maximum supported protocol.
403 It can bet set via the SSL_set_min_proto_version() and
404 SSL_set_max_proto_version(), or via the SSL_CONF's MinProtocol and
405 MaxProtcol. It's recommended to use the new APIs to disable
406 protocols instead of disabling individual protocols using
407 SSL_set_options() or SSL_CONF's Protocol. This change also
408 removes support for disabling TLS 1.2 in the OpenSSL TLS
409 client at compile time by defining OPENSSL_NO_TLS1_2_CLIENT.
412 *) Support for ChaCha20 and Poly1305 added to libcrypto and libssl.
415 *) New EC_KEY_METHOD, this replaces the older ECDSA_METHOD and ECDH_METHOD
416 and integrates ECDSA and ECDH functionality into EC. Implementations can
417 now redirect key generation and no longer need to convert to or from
420 Note: the ecdsa.h and ecdh.h headers are now no longer needed and just
421 include the ec.h header file instead.
424 *) Remove support for all 40 and 56 bit ciphers. This includes all the export
425 ciphers who are no longer supported and drops support the ephemeral RSA key
426 exchange. The LOW ciphers currently doesn't have any ciphers in it.
429 *) Made EVP_MD_CTX, EVP_MD, EVP_CIPHER_CTX, EVP_CIPHER and HMAC_CTX
430 opaque. For HMAC_CTX, the following constructors and destructors
433 HMAC_CTX *HMAC_CTX_new(void);
434 void HMAC_CTX_free(HMAC_CTX *ctx);
436 For EVP_MD and EVP_CIPHER, complete APIs to create, fill and
437 destroy such methods has been added. See EVP_MD_meth_new(3) and
438 EVP_CIPHER_meth_new(3) for documentation.
441 1) EVP_MD_CTX_cleanup(), EVP_CIPHER_CTX_cleanup() and
442 HMAC_CTX_cleanup() were removed. HMAC_CTX_reset() and
443 EVP_MD_CTX_reset() should be called instead to reinitialise
444 an already created structure.
445 2) For consistency with the majority of our object creators and
446 destructors, EVP_MD_CTX_(create|destroy) were renamed to
447 EVP_MD_CTX_(new|free). The old names are retained as macros
448 for deprecated builds.
451 *) Added ASYNC support. Libcrypto now includes the async sub-library to enable
452 cryptographic operations to be performed asynchronously as long as an
453 asynchronous capable engine is used. See the ASYNC_start_job() man page for
454 further details. Libssl has also had this capability integrated with the
455 introduction of the new mode SSL_MODE_ASYNC and associated error
456 SSL_ERROR_WANT_ASYNC. See the SSL_CTX_set_mode() and SSL_get_error() man
457 pages. This work was developed in partnership with Intel Corp.
460 *) SSL_{CTX_}set_ecdh_auto() has been removed and ECDH is support is
461 always enabled now. If you want to disable the support you should
462 exclude it using the list of supported ciphers. This also means that the
463 "-no_ecdhe" option has been removed from s_server.
466 *) SSL_{CTX}_set_tmp_ecdh() which can set 1 EC curve now internally calls
467 SSL_{CTX_}set1_curves() which can set a list.
470 *) Remove support for SSL_{CTX_}set_tmp_ecdh_callback(). You should set the
471 curve you want to support using SSL_{CTX_}set1_curves().
474 *) State machine rewrite. The state machine code has been significantly
475 refactored in order to remove much duplication of code and solve issues
476 with the old code (see ssl/statem/README for further details). This change
477 does have some associated API changes. Notably the SSL_state() function
478 has been removed and replaced by SSL_get_state which now returns an
479 "OSSL_HANDSHAKE_STATE" instead of an int. SSL_set_state() has been removed
480 altogether. The previous handshake states defined in ssl.h and ssl3.h have
484 *) All instances of the string "ssleay" in the public API were replaced
485 with OpenSSL (case-matching; e.g., OPENSSL_VERSION for #define's)
486 Some error codes related to internal RSA_eay API's were renamed.
489 *) The demo files in crypto/threads were moved to demo/threads.
492 *) Removed obsolete engines: 4758cca, aep, atalla, cswift, nuron, gmp,
494 [Matt Caswell, Rich Salz]
496 *) New ASN.1 embed macro.
498 New ASN.1 macro ASN1_EMBED. This is the same as ASN1_SIMPLE except the
499 structure is not allocated: it is part of the parent. That is instead of
507 This reduces memory fragmentation and make it impossible to accidentally
508 set a mandatory field to NULL.
510 This currently only works for some fields specifically a SEQUENCE, CHOICE,
511 or ASN1_STRING type which is part of a parent SEQUENCE. Since it is
512 equivalent to ASN1_SIMPLE it cannot be tagged, OPTIONAL, SET OF or
516 *) Remove EVP_CHECK_DES_KEY, a compile-time option that never compiled.
519 *) Removed DES and RC4 ciphersuites from DEFAULT. Also removed RC2 although
520 in 1.0.2 EXPORT was already removed and the only RC2 ciphersuite is also
521 an EXPORT one. COMPLEMENTOFDEFAULT has been updated accordingly to add
522 DES and RC4 ciphersuites.
525 *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
526 This changes the decoding behaviour for some invalid messages,
527 though the change is mostly in the more lenient direction, and
528 legacy behaviour is preserved as much as possible.
531 *) Fix no-stdio build.
532 [ David Woodhouse <David.Woodhouse@intel.com> and also
533 Ivan Nestlerode <ivan.nestlerode@sonos.com> ]
535 *) New testing framework
536 The testing framework has been largely rewritten and is now using
537 perl and the perl modules Test::Harness and an extended variant of
538 Test::More called OpenSSL::Test to do its work. All test scripts in
539 test/ have been rewritten into test recipes, and all direct calls to
540 executables in test/Makefile have become individual recipes using the
541 simplified testing OpenSSL::Test::Simple.
543 For documentation on our testing modules, do:
545 perldoc test/testlib/OpenSSL/Test/Simple.pm
546 perldoc test/testlib/OpenSSL/Test.pm
550 *) Revamped memory debug; only -DCRYPTO_MDEBUG and -DCRYPTO_MDEBUG_ABORT
551 are used; the latter aborts on memory leaks (usually checked on exit).
552 Some undocumented "set malloc, etc., hooks" functions were removed
553 and others were changed. All are now documented.
556 *) In DSA_generate_parameters_ex, if the provided seed is too short,
558 [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>]
560 *) Rewrite PSK to support ECDHE_PSK, DHE_PSK and RSA_PSK. Add ciphersuites
561 from RFC4279, RFC4785, RFC5487, RFC5489.
563 Thanks to Christian J. Dietrich and Giuseppe D'Angelo for the
564 original RSA_PSK patch.
567 *) Dropped support for the SSL3_FLAGS_DELAY_CLIENT_FINISHED flag. This SSLeay
568 era flag was never set throughout the codebase (only read). Also removed
569 SSL3_FLAGS_POP_BUFFER which was only used if
570 SSL3_FLAGS_DELAY_CLIENT_FINISHED was also set.
573 *) Changed the default name options in the "ca", "crl", "req" and "x509"
574 to be "oneline" instead of "compat".
577 *) Remove SSL_OP_TLS_BLOCK_PADDING_BUG. This is SSLeay legacy, we're
578 not aware of clients that still exhibit this bug, and the workaround
579 hasn't been working properly for a while.
582 *) The return type of BIO_number_read() and BIO_number_written() as well as
583 the corresponding num_read and num_write members in the BIO structure has
584 changed from unsigned long to uint64_t. On platforms where an unsigned
585 long is 32 bits (e.g. Windows) these counters could overflow if >4Gb is
589 *) Given the pervasive nature of TLS extensions it is inadvisable to run
590 OpenSSL without support for them. It also means that maintaining
591 the OPENSSL_NO_TLSEXT option within the code is very invasive (and probably
592 not well tested). Therefore the OPENSSL_NO_TLSEXT option has been removed.
595 *) Removed support for the two export grade static DH ciphersuites
596 EXP-DH-RSA-DES-CBC-SHA and EXP-DH-DSS-DES-CBC-SHA. These two ciphersuites
597 were newly added (along with a number of other static DH ciphersuites) to
598 1.0.2. However the two export ones have *never* worked since they were
599 introduced. It seems strange in any case to be adding new export
600 ciphersuites, and given "logjam" it also does not seem correct to fix them.
603 *) Version negotiation has been rewritten. In particular SSLv23_method(),
604 SSLv23_client_method() and SSLv23_server_method() have been deprecated,
605 and turned into macros which simply call the new preferred function names
606 TLS_method(), TLS_client_method() and TLS_server_method(). All new code
607 should use the new names instead. Also as part of this change the ssl23.h
608 header file has been removed.
611 *) Support for Kerberos ciphersuites in TLS (RFC2712) has been removed. This
612 code and the associated standard is no longer considered fit-for-purpose.
615 *) RT2547 was closed. When generating a private key, try to make the
616 output file readable only by the owner. This behavior change might
617 be noticeable when interacting with other software.
619 *) Documented all exdata functions. Added CRYPTO_free_ex_index.
623 *) Added HTTP GET support to the ocsp command.
626 *) Changed default digest for the dgst and enc commands from MD5 to
630 *) RAND_pseudo_bytes has been deprecated. Users should use RAND_bytes instead.
633 *) Added support for TLS extended master secret from
634 draft-ietf-tls-session-hash-03.txt. Thanks for Alfredo Pironti for an
635 initial patch which was a great help during development.
638 *) All libssl internal structures have been removed from the public header
639 files, and the OPENSSL_NO_SSL_INTERN option has been removed (since it is
640 now redundant). Users should not attempt to access internal structures
641 directly. Instead they should use the provided API functions.
644 *) config has been changed so that by default OPENSSL_NO_DEPRECATED is used.
645 Access to deprecated functions can be re-enabled by running config with
646 "enable-deprecated". In addition applications wishing to use deprecated
647 functions must define OPENSSL_USE_DEPRECATED. Note that this new behaviour
648 will, by default, disable some transitive includes that previously existed
649 in the header files (e.g. ec.h will no longer, by default, include bn.h)
652 *) Added support for OCB mode. OpenSSL has been granted a patent license
653 compatible with the OpenSSL license for use of OCB. Details are available
654 at https://www.openssl.org/source/OCB-patent-grant-OpenSSL.pdf. Support
655 for OCB can be removed by calling config with no-ocb.
658 *) SSLv2 support has been removed. It still supports receiving a SSLv2
659 compatible client hello.
662 *) Increased the minimal RSA keysize from 256 to 512 bits [Rich Salz],
663 done while fixing the error code for the key-too-small case.
664 [Annie Yousar <a.yousar@informatik.hu-berlin.de>]
666 *) CA.sh has been removmed; use CA.pl instead.
669 *) Removed old DES API.
672 *) Remove various unsupported platforms:
678 Sinix/ReliantUNIX RM400
683 16-bit platforms such as WIN16
686 *) Clean up OPENSSL_NO_xxx #define's
687 Use setbuf() and remove OPENSSL_NO_SETVBUF_IONBF
688 Rename OPENSSL_SYSNAME_xxx to OPENSSL_SYS_xxx
689 OPENSSL_NO_EC{DH,DSA} merged into OPENSSL_NO_EC
690 OPENSSL_NO_RIPEMD160, OPENSSL_NO_RIPEMD merged into OPENSSL_NO_RMD160
691 OPENSSL_NO_FP_API merged into OPENSSL_NO_STDIO
692 Remove OPENSSL_NO_BIO OPENSSL_NO_BUFFER OPENSSL_NO_CHAIN_VERIFY
693 OPENSSL_NO_EVP OPENSSL_NO_FIPS_ERR OPENSSL_NO_HASH_COMP
694 OPENSSL_NO_LHASH OPENSSL_NO_OBJECT OPENSSL_NO_SPEED OPENSSL_NO_STACK
695 OPENSSL_NO_X509 OPENSSL_NO_X509_VERIFY
696 Remove MS_STATIC; it's a relic from platforms <32 bits.
699 *) Cleaned up dead code
700 Remove all but one '#ifdef undef' which is to be looked at.
703 *) Clean up calling of xxx_free routines.
704 Just like free(), fix most of the xxx_free routines to accept
705 NULL. Remove the non-null checks from callers. Save much code.
708 *) Add secure heap for storage of private keys (when possible).
709 Add BIO_s_secmem(), CBIGNUM, etc.
710 Contributed by Akamai Technologies under our Corporate CLA.
713 *) Experimental support for a new, fast, unbiased prime candidate generator,
714 bn_probable_prime_dh_coprime(). Not currently used by any prime generator.
715 [Felix Laurie von Massenbach <felix@erbridge.co.uk>]
717 *) New output format NSS in the sess_id command line tool. This allows
718 exporting the session id and the master key in NSS keylog format.
719 [Martin Kaiser <martin@kaiser.cx>]
721 *) Harmonize version and its documentation. -f flag is used to display
723 [mancha <mancha1@zoho.com>]
725 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
726 in i2d_ECPrivateKey. Thanks to Ted Unangst for feedback on this issue.
727 [mancha <mancha1@zoho.com>]
729 *) Fix some double frees. These are not thought to be exploitable.
730 [mancha <mancha1@zoho.com>]
732 *) A missing bounds check in the handling of the TLS heartbeat extension
733 can be used to reveal up to 64k of memory to a connected client or
736 Thanks for Neel Mehta of Google Security for discovering this bug and to
737 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
738 preparing the fix (CVE-2014-0160)
739 [Adam Langley, Bodo Moeller]
741 *) Fix for the attack described in the paper "Recovering OpenSSL
742 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
743 by Yuval Yarom and Naomi Benger. Details can be obtained from:
744 http://eprint.iacr.org/2014/140
746 Thanks to Yuval Yarom and Naomi Benger for discovering this
747 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
748 [Yuval Yarom and Naomi Benger]
750 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
751 this fixes a limitation in previous versions of OpenSSL.
754 *) Experimental encrypt-then-mac support.
756 Experimental support for encrypt then mac from
757 draft-gutmann-tls-encrypt-then-mac-02.txt
759 To enable it set the appropriate extension number (0x42 for the test
760 server) using e.g. -DTLSEXT_TYPE_encrypt_then_mac=0x42
762 For non-compliant peers (i.e. just about everything) this should have no
765 WARNING: EXPERIMENTAL, SUBJECT TO CHANGE.
769 *) Add EVP support for key wrapping algorithms, to avoid problems with
770 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
771 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
772 algorithms and include tests cases.
775 *) Extend CMS code to support RSA-PSS signatures and RSA-OAEP for
779 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
780 MGF1 digest and OAEP label.
783 *) Make openssl verify return errors.
784 [Chris Palmer <palmer@google.com> and Ben Laurie]
786 *) New function ASN1_TIME_diff to calculate the difference between two
787 ASN1_TIME structures or one structure and the current time.
790 *) Update fips_test_suite to support multiple command line options. New
791 test to induce all self test errors in sequence and check expected
795 *) Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and
796 sign or verify all in one operation.
799 *) Add fips_algvs: a multicall fips utility incorporating all the algorithm
800 test programs and fips_test_suite. Includes functionality to parse
801 the minimal script output of fipsalgest.pl directly.
804 *) Add authorisation parameter to FIPS_module_mode_set().
807 *) Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves.
810 *) Use separate DRBG fields for internal and external flags. New function
811 FIPS_drbg_health_check() to perform on demand health checking. Add
812 generation tests to fips_test_suite with reduced health check interval to
813 demonstrate periodic health checking. Add "nodh" option to
814 fips_test_suite to skip very slow DH test.
817 *) New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers
821 *) More extensive health check for DRBG checking many more failure modes.
822 New function FIPS_selftest_drbg_all() to handle every possible DRBG
823 combination: call this in fips_test_suite.
826 *) Add support for Dual EC DRBG from SP800-90. Update DRBG algorithm test
827 and POST to handle Dual EC cases.
830 *) Add support for canonical generation of DSA parameter 'g'. See
833 *) Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
834 POST to handle HMAC cases.
837 *) Add functions FIPS_module_version() and FIPS_module_version_text()
838 to return numerical and string versions of the FIPS module number.
841 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
842 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implemented
843 outside the validated module in the FIPS capable OpenSSL.
846 *) Minor change to DRBG entropy callback semantics. In some cases
847 there is no multiple of the block length between min_len and
848 max_len. Allow the callback to return more than max_len bytes
849 of entropy but discard any extra: it is the callback's responsibility
850 to ensure that the extra data discarded does not impact the
851 requested amount of entropy.
854 *) Add PRNG security strength checks to RSA, DSA and ECDSA using
855 information in FIPS186-3, SP800-57 and SP800-131A.
858 *) CCM support via EVP. Interface is very similar to GCM case except we
859 must supply all data in one chunk (i.e. no update, final) and the
860 message length must be supplied if AAD is used. Add algorithm test
864 *) Initial version of POST overhaul. Add POST callback to allow the status
865 of POST to be monitored and/or failures induced. Modify fips_test_suite
866 to use callback. Always run all selftests even if one fails.
869 *) XTS support including algorithm test driver in the fips_gcmtest program.
870 Note: this does increase the maximum key length from 32 to 64 bytes but
871 there should be no binary compatibility issues as existing applications
872 will never use XTS mode.
875 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
876 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
877 performs algorithm blocking for unapproved PRNG types. Also do not
878 set PRNG type in FIPS_mode_set(): leave this to the application.
879 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
880 the standard OpenSSL PRNG: set additional data to a date time vector.
883 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
884 This shouldn't present any incompatibility problems because applications
885 shouldn't be using these directly and any that are will need to rethink
886 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
889 *) Extensive self tests and health checking required by SP800-90 DRBG.
890 Remove strength parameter from FIPS_drbg_instantiate and always
891 instantiate at maximum supported strength.
894 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
897 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
900 *) New function DH_compute_key_padded() to compute a DH key and pad with
901 leading zeroes if needed: this complies with SP800-56A et al.
904 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
905 anything, incomplete, subject to change and largely untested at present.
908 *) Modify fipscanisteronly build option to only build the necessary object
909 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
912 *) Add experimental option FIPSSYMS to give all symbols in
913 fipscanister.o and FIPS or fips prefix. This will avoid
914 conflicts with future versions of OpenSSL. Add perl script
915 util/fipsas.pl to preprocess assembly language source files
916 and rename any affected symbols.
919 *) Add selftest checks and algorithm block of non-fips algorithms in
920 FIPS mode. Remove DES2 from selftests.
923 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
924 return internal method without any ENGINE dependencies. Add new
925 tiny fips sign and verify functions.
928 *) New build option no-ec2m to disable characteristic 2 code.
931 *) New build option "fipscanisteronly". This only builds fipscanister.o
932 and (currently) associated fips utilities. Uses the file Makefile.fips
933 instead of Makefile.org as the prototype.
936 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
937 Update fips_gcmtest to use IV generator.
940 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
941 setting output buffer to NULL. The *Final function must be
942 called although it will not retrieve any additional data. The tag
943 can be set or retrieved with a ctrl. The IV length is by default 12
944 bytes (96 bits) but can be set to an alternative value. If the IV
945 length exceeds the maximum IV length (currently 16 bytes) it cannot be
949 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
950 underlying do_cipher function handles all cipher semantics itself
951 including padding and finalisation. This is useful if (for example)
952 an ENGINE cipher handles block padding itself. The behaviour of
953 do_cipher is subtly changed if this flag is set: the return value
954 is the number of characters written to the output buffer (zero is
955 no longer an error code) or a negative error code. Also if the
956 input buffer is NULL and length 0 finalisation should be performed.
959 *) If a candidate issuer certificate is already part of the constructed
960 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
963 *) Improve forward-security support: add functions
965 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
966 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
968 for use by SSL/TLS servers; the callback function will be called whenever a
969 new session is created, and gets to decide whether the session may be
970 cached to make it resumable (return 0) or not (return 1). (As by the
971 SSL/TLS protocol specifications, the session_id sent by the server will be
972 empty to indicate that the session is not resumable; also, the server will
973 not generate RFC 4507 (RFC 5077) session tickets.)
975 A simple reasonable callback implementation is to return is_forward_secure.
976 This parameter will be set to 1 or 0 depending on the ciphersuite selected
977 by the SSL/TLS server library, indicating whether it can provide forward
979 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
981 *) New -verify_name option in command line utilities to set verification
985 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
986 Add CMAC pkey methods.
989 *) Experimental renegotiation in s_server -www mode. If the client
990 browses /reneg connection is renegotiated. If /renegcert it is
991 renegotiated requesting a certificate.
994 *) Add an "external" session cache for debugging purposes to s_server. This
995 should help trace issues which normally are only apparent in deployed
996 multi-process servers.
999 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
1000 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
1001 BIO_set_cipher() and some obscure PEM functions were changed so they
1002 can now return an error. The RAND changes required a change to the
1003 RAND_METHOD structure.
1006 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
1007 a gcc attribute to warn if the result of a function is ignored. This
1008 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
1009 whose return value is often ignored.
1012 *) New -noct, -requestct, -requirect and -ctlogfile options for s_client.
1013 These allow SCTs (signed certificate timestamps) to be requested and
1014 validated when establishing a connection.
1015 [Rob Percival <robpercival@google.com>]
1017 Changes between 1.0.2g and 1.0.2h [3 May 2016]
1019 *) Prevent padding oracle in AES-NI CBC MAC check
1021 A MITM attacker can use a padding oracle attack to decrypt traffic
1022 when the connection uses an AES CBC cipher and the server support
1025 This issue was introduced as part of the fix for Lucky 13 padding
1026 attack (CVE-2013-0169). The padding check was rewritten to be in
1027 constant time by making sure that always the same bytes are read and
1028 compared against either the MAC or padding bytes. But it no longer
1029 checked that there was enough data to have both the MAC and padding
1032 This issue was reported by Juraj Somorovsky using TLS-Attacker.
1036 *) Fix EVP_EncodeUpdate overflow
1038 An overflow can occur in the EVP_EncodeUpdate() function which is used for
1039 Base64 encoding of binary data. If an attacker is able to supply very large
1040 amounts of input data then a length check can overflow resulting in a heap
1043 Internally to OpenSSL the EVP_EncodeUpdate() function is primarily used by
1044 the PEM_write_bio* family of functions. These are mainly used within the
1045 OpenSSL command line applications, so any application which processes data
1046 from an untrusted source and outputs it as a PEM file should be considered
1047 vulnerable to this issue. User applications that call these APIs directly
1048 with large amounts of untrusted data may also be vulnerable.
1050 This issue was reported by Guido Vranken.
1054 *) Fix EVP_EncryptUpdate overflow
1056 An overflow can occur in the EVP_EncryptUpdate() function. If an attacker
1057 is able to supply very large amounts of input data after a previous call to
1058 EVP_EncryptUpdate() with a partial block then a length check can overflow
1059 resulting in a heap corruption. Following an analysis of all OpenSSL
1060 internal usage of the EVP_EncryptUpdate() function all usage is one of two
1061 forms. The first form is where the EVP_EncryptUpdate() call is known to be
1062 the first called function after an EVP_EncryptInit(), and therefore that
1063 specific call must be safe. The second form is where the length passed to
1064 EVP_EncryptUpdate() can be seen from the code to be some small value and
1065 therefore there is no possibility of an overflow. Since all instances are
1066 one of these two forms, it is believed that there can be no overflows in
1067 internal code due to this problem. It should be noted that
1068 EVP_DecryptUpdate() can call EVP_EncryptUpdate() in certain code paths.
1069 Also EVP_CipherUpdate() is a synonym for EVP_EncryptUpdate(). All instances
1070 of these calls have also been analysed too and it is believed there are no
1071 instances in internal usage where an overflow could occur.
1073 This issue was reported by Guido Vranken.
1077 *) Prevent ASN.1 BIO excessive memory allocation
1079 When ASN.1 data is read from a BIO using functions such as d2i_CMS_bio()
1080 a short invalid encoding can cause allocation of large amounts of memory
1081 potentially consuming excessive resources or exhausting memory.
1083 Any application parsing untrusted data through d2i BIO functions is
1084 affected. The memory based functions such as d2i_X509() are *not* affected.
1085 Since the memory based functions are used by the TLS library, TLS
1086 applications are not affected.
1088 This issue was reported by Brian Carpenter.
1094 ASN1 Strings that are over 1024 bytes can cause an overread in applications
1095 using the X509_NAME_oneline() function on EBCDIC systems. This could result
1096 in arbitrary stack data being returned in the buffer.
1098 This issue was reported by Guido Vranken.
1102 *) Modify behavior of ALPN to invoke callback after SNI/servername
1103 callback, such that updates to the SSL_CTX affect ALPN.
1106 *) Remove LOW from the DEFAULT cipher list. This removes singles DES from the
1110 *) Only remove the SSLv2 methods with the no-ssl2-method option. When the
1111 methods are enabled and ssl2 is disabled the methods return NULL.
1114 Changes between 1.0.2f and 1.0.2g [1 Mar 2016]
1116 * Disable weak ciphers in SSLv3 and up in default builds of OpenSSL.
1117 Builds that are not configured with "enable-weak-ssl-ciphers" will not
1118 provide any "EXPORT" or "LOW" strength ciphers.
1121 * Disable SSLv2 default build, default negotiation and weak ciphers. SSLv2
1122 is by default disabled at build-time. Builds that are not configured with
1123 "enable-ssl2" will not support SSLv2. Even if "enable-ssl2" is used,
1124 users who want to negotiate SSLv2 via the version-flexible SSLv23_method()
1125 will need to explicitly call either of:
1127 SSL_CTX_clear_options(ctx, SSL_OP_NO_SSLv2);
1129 SSL_clear_options(ssl, SSL_OP_NO_SSLv2);
1131 as appropriate. Even if either of those is used, or the application
1132 explicitly uses the version-specific SSLv2_method() or its client and
1133 server variants, SSLv2 ciphers vulnerable to exhaustive search key
1134 recovery have been removed. Specifically, the SSLv2 40-bit EXPORT
1135 ciphers, and SSLv2 56-bit DES are no longer available.
1139 *) Fix a double-free in DSA code
1141 A double free bug was discovered when OpenSSL parses malformed DSA private
1142 keys and could lead to a DoS attack or memory corruption for applications
1143 that receive DSA private keys from untrusted sources. This scenario is
1146 This issue was reported to OpenSSL by Adam Langley(Google/BoringSSL) using
1151 *) Disable SRP fake user seed to address a server memory leak.
1153 Add a new method SRP_VBASE_get1_by_user that handles the seed properly.
1155 SRP_VBASE_get_by_user had inconsistent memory management behaviour.
1156 In order to fix an unavoidable memory leak, SRP_VBASE_get_by_user
1157 was changed to ignore the "fake user" SRP seed, even if the seed
1160 Users should use SRP_VBASE_get1_by_user instead. Note that in
1161 SRP_VBASE_get1_by_user, caller must free the returned value. Note
1162 also that even though configuring the SRP seed attempts to hide
1163 invalid usernames by continuing the handshake with fake
1164 credentials, this behaviour is not constant time and no strong
1165 guarantees are made that the handshake is indistinguishable from
1166 that of a valid user.
1170 *) Fix BN_hex2bn/BN_dec2bn NULL pointer deref/heap corruption
1172 In the BN_hex2bn function the number of hex digits is calculated using an
1173 int value |i|. Later |bn_expand| is called with a value of |i * 4|. For
1174 large values of |i| this can result in |bn_expand| not allocating any
1175 memory because |i * 4| is negative. This can leave the internal BIGNUM data
1176 field as NULL leading to a subsequent NULL ptr deref. For very large values
1177 of |i|, the calculation |i * 4| could be a positive value smaller than |i|.
1178 In this case memory is allocated to the internal BIGNUM data field, but it
1179 is insufficiently sized leading to heap corruption. A similar issue exists
1180 in BN_dec2bn. This could have security consequences if BN_hex2bn/BN_dec2bn
1181 is ever called by user applications with very large untrusted hex/dec data.
1182 This is anticipated to be a rare occurrence.
1184 All OpenSSL internal usage of these functions use data that is not expected
1185 to be untrusted, e.g. config file data or application command line
1186 arguments. If user developed applications generate config file data based
1187 on untrusted data then it is possible that this could also lead to security
1188 consequences. This is also anticipated to be rare.
1190 This issue was reported to OpenSSL by Guido Vranken.
1194 *) Fix memory issues in BIO_*printf functions
1196 The internal |fmtstr| function used in processing a "%s" format string in
1197 the BIO_*printf functions could overflow while calculating the length of a
1198 string and cause an OOB read when printing very long strings.
1200 Additionally the internal |doapr_outch| function can attempt to write to an
1201 OOB memory location (at an offset from the NULL pointer) in the event of a
1202 memory allocation failure. In 1.0.2 and below this could be caused where
1203 the size of a buffer to be allocated is greater than INT_MAX. E.g. this
1204 could be in processing a very long "%s" format string. Memory leaks can
1207 The first issue may mask the second issue dependent on compiler behaviour.
1208 These problems could enable attacks where large amounts of untrusted data
1209 is passed to the BIO_*printf functions. If applications use these functions
1210 in this way then they could be vulnerable. OpenSSL itself uses these
1211 functions when printing out human-readable dumps of ASN.1 data. Therefore
1212 applications that print this data could be vulnerable if the data is from
1213 untrusted sources. OpenSSL command line applications could also be
1214 vulnerable where they print out ASN.1 data, or if untrusted data is passed
1215 as command line arguments.
1217 Libssl is not considered directly vulnerable. Additionally certificates etc
1218 received via remote connections via libssl are also unlikely to be able to
1219 trigger these issues because of message size limits enforced within libssl.
1221 This issue was reported to OpenSSL Guido Vranken.
1225 *) Side channel attack on modular exponentiation
1227 A side-channel attack was found which makes use of cache-bank conflicts on
1228 the Intel Sandy-Bridge microarchitecture which could lead to the recovery
1229 of RSA keys. The ability to exploit this issue is limited as it relies on
1230 an attacker who has control of code in a thread running on the same
1231 hyper-threaded core as the victim thread which is performing decryptions.
1233 This issue was reported to OpenSSL by Yuval Yarom, The University of
1234 Adelaide and NICTA, Daniel Genkin, Technion and Tel Aviv University, and
1235 Nadia Heninger, University of Pennsylvania with more information at
1236 http://cachebleed.info.
1240 *) Change the req app to generate a 2048-bit RSA/DSA key by default,
1241 if no keysize is specified with default_bits. This fixes an
1242 omission in an earlier change that changed all RSA/DSA key generation
1243 apps to use 2048 bits by default.
1246 Changes between 1.0.2e and 1.0.2f [28 Jan 2016]
1247 *) DH small subgroups
1249 Historically OpenSSL only ever generated DH parameters based on "safe"
1250 primes. More recently (in version 1.0.2) support was provided for
1251 generating X9.42 style parameter files such as those required for RFC 5114
1252 support. The primes used in such files may not be "safe". Where an
1253 application is using DH configured with parameters based on primes that are
1254 not "safe" then an attacker could use this fact to find a peer's private
1255 DH exponent. This attack requires that the attacker complete multiple
1256 handshakes in which the peer uses the same private DH exponent. For example
1257 this could be used to discover a TLS server's private DH exponent if it's
1258 reusing the private DH exponent or it's using a static DH ciphersuite.
1260 OpenSSL provides the option SSL_OP_SINGLE_DH_USE for ephemeral DH (DHE) in
1261 TLS. It is not on by default. If the option is not set then the server
1262 reuses the same private DH exponent for the life of the server process and
1263 would be vulnerable to this attack. It is believed that many popular
1264 applications do set this option and would therefore not be at risk.
1266 The fix for this issue adds an additional check where a "q" parameter is
1267 available (as is the case in X9.42 based parameters). This detects the
1268 only known attack, and is the only possible defense for static DH
1269 ciphersuites. This could have some performance impact.
1271 Additionally the SSL_OP_SINGLE_DH_USE option has been switched on by
1272 default and cannot be disabled. This could have some performance impact.
1274 This issue was reported to OpenSSL by Antonio Sanso (Adobe).
1278 *) SSLv2 doesn't block disabled ciphers
1280 A malicious client can negotiate SSLv2 ciphers that have been disabled on
1281 the server and complete SSLv2 handshakes even if all SSLv2 ciphers have
1282 been disabled, provided that the SSLv2 protocol was not also disabled via
1285 This issue was reported to OpenSSL on 26th December 2015 by Nimrod Aviram
1286 and Sebastian Schinzel.
1290 Changes between 1.0.2d and 1.0.2e [3 Dec 2015]
1292 *) BN_mod_exp may produce incorrect results on x86_64
1294 There is a carry propagating bug in the x86_64 Montgomery squaring
1295 procedure. No EC algorithms are affected. Analysis suggests that attacks
1296 against RSA and DSA as a result of this defect would be very difficult to
1297 perform and are not believed likely. Attacks against DH are considered just
1298 feasible (although very difficult) because most of the work necessary to
1299 deduce information about a private key may be performed offline. The amount
1300 of resources required for such an attack would be very significant and
1301 likely only accessible to a limited number of attackers. An attacker would
1302 additionally need online access to an unpatched system using the target
1303 private key in a scenario with persistent DH parameters and a private
1304 key that is shared between multiple clients. For example this can occur by
1305 default in OpenSSL DHE based SSL/TLS ciphersuites.
1307 This issue was reported to OpenSSL by Hanno Böck.
1311 *) Certificate verify crash with missing PSS parameter
1313 The signature verification routines will crash with a NULL pointer
1314 dereference if presented with an ASN.1 signature using the RSA PSS
1315 algorithm and absent mask generation function parameter. Since these
1316 routines are used to verify certificate signature algorithms this can be
1317 used to crash any certificate verification operation and exploited in a
1318 DoS attack. Any application which performs certificate verification is
1319 vulnerable including OpenSSL clients and servers which enable client
1322 This issue was reported to OpenSSL by Loïc Jonas Etienne (Qnective AG).
1326 *) X509_ATTRIBUTE memory leak
1328 When presented with a malformed X509_ATTRIBUTE structure OpenSSL will leak
1329 memory. This structure is used by the PKCS#7 and CMS routines so any
1330 application which reads PKCS#7 or CMS data from untrusted sources is
1331 affected. SSL/TLS is not affected.
1333 This issue was reported to OpenSSL by Adam Langley (Google/BoringSSL) using
1338 *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
1339 This changes the decoding behaviour for some invalid messages,
1340 though the change is mostly in the more lenient direction, and
1341 legacy behaviour is preserved as much as possible.
1344 *) In DSA_generate_parameters_ex, if the provided seed is too short,
1346 [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>]
1348 Changes between 1.0.2c and 1.0.2d [9 Jul 2015]
1350 *) Alternate chains certificate forgery
1352 During certificate verification, OpenSSL will attempt to find an
1353 alternative certificate chain if the first attempt to build such a chain
1354 fails. An error in the implementation of this logic can mean that an
1355 attacker could cause certain checks on untrusted certificates to be
1356 bypassed, such as the CA flag, enabling them to use a valid leaf
1357 certificate to act as a CA and "issue" an invalid certificate.
1359 This issue was reported to OpenSSL by Adam Langley/David Benjamin
1363 Changes between 1.0.2b and 1.0.2c [12 Jun 2015]
1365 *) Fix HMAC ABI incompatibility. The previous version introduced an ABI
1366 incompatibility in the handling of HMAC. The previous ABI has now been
1370 Changes between 1.0.2a and 1.0.2b [11 Jun 2015]
1372 *) Malformed ECParameters causes infinite loop
1374 When processing an ECParameters structure OpenSSL enters an infinite loop
1375 if the curve specified is over a specially malformed binary polynomial
1378 This can be used to perform denial of service against any
1379 system which processes public keys, certificate requests or
1380 certificates. This includes TLS clients and TLS servers with
1381 client authentication enabled.
1383 This issue was reported to OpenSSL by Joseph Barr-Pixton.
1387 *) Exploitable out-of-bounds read in X509_cmp_time
1389 X509_cmp_time does not properly check the length of the ASN1_TIME
1390 string and can read a few bytes out of bounds. In addition,
1391 X509_cmp_time accepts an arbitrary number of fractional seconds in the
1394 An attacker can use this to craft malformed certificates and CRLs of
1395 various sizes and potentially cause a segmentation fault, resulting in
1396 a DoS on applications that verify certificates or CRLs. TLS clients
1397 that verify CRLs are affected. TLS clients and servers with client
1398 authentication enabled may be affected if they use custom verification
1401 This issue was reported to OpenSSL by Robert Swiecki (Google), and
1402 independently by Hanno Böck.
1406 *) PKCS7 crash with missing EnvelopedContent
1408 The PKCS#7 parsing code does not handle missing inner EncryptedContent
1409 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs
1410 with missing content and trigger a NULL pointer dereference on parsing.
1412 Applications that decrypt PKCS#7 data or otherwise parse PKCS#7
1413 structures from untrusted sources are affected. OpenSSL clients and
1414 servers are not affected.
1416 This issue was reported to OpenSSL by Michal Zalewski (Google).
1420 *) CMS verify infinite loop with unknown hash function
1422 When verifying a signedData message the CMS code can enter an infinite loop
1423 if presented with an unknown hash function OID. This can be used to perform
1424 denial of service against any system which verifies signedData messages using
1426 This issue was reported to OpenSSL by Johannes Bauer.
1430 *) Race condition handling NewSessionTicket
1432 If a NewSessionTicket is received by a multi-threaded client when attempting to
1433 reuse a previous ticket then a race condition can occur potentially leading to
1434 a double free of the ticket data.
1438 *) Only support 256-bit or stronger elliptic curves with the
1439 'ecdh_auto' setting (server) or by default (client). Of supported
1440 curves, prefer P-256 (both).
1443 Changes between 1.0.2 and 1.0.2a [19 Mar 2015]
1445 *) ClientHello sigalgs DoS fix
1447 If a client connects to an OpenSSL 1.0.2 server and renegotiates with an
1448 invalid signature algorithms extension a NULL pointer dereference will
1449 occur. This can be exploited in a DoS attack against the server.
1451 This issue was was reported to OpenSSL by David Ramos of Stanford
1454 [Stephen Henson and Matt Caswell]
1456 *) Multiblock corrupted pointer fix
1458 OpenSSL 1.0.2 introduced the "multiblock" performance improvement. This
1459 feature only applies on 64 bit x86 architecture platforms that support AES
1460 NI instructions. A defect in the implementation of "multiblock" can cause
1461 OpenSSL's internal write buffer to become incorrectly set to NULL when
1462 using non-blocking IO. Typically, when the user application is using a
1463 socket BIO for writing, this will only result in a failed connection.
1464 However if some other BIO is used then it is likely that a segmentation
1465 fault will be triggered, thus enabling a potential DoS attack.
1467 This issue was reported to OpenSSL by Daniel Danner and Rainer Mueller.
1471 *) Segmentation fault in DTLSv1_listen fix
1473 The DTLSv1_listen function is intended to be stateless and processes the
1474 initial ClientHello from many peers. It is common for user code to loop
1475 over the call to DTLSv1_listen until a valid ClientHello is received with
1476 an associated cookie. A defect in the implementation of DTLSv1_listen means
1477 that state is preserved in the SSL object from one invocation to the next
1478 that can lead to a segmentation fault. Errors processing the initial
1479 ClientHello can trigger this scenario. An example of such an error could be
1480 that a DTLS1.0 only client is attempting to connect to a DTLS1.2 only
1483 This issue was reported to OpenSSL by Per Allansson.
1487 *) Segmentation fault in ASN1_TYPE_cmp fix
1489 The function ASN1_TYPE_cmp will crash with an invalid read if an attempt is
1490 made to compare ASN.1 boolean types. Since ASN1_TYPE_cmp is used to check
1491 certificate signature algorithm consistency this can be used to crash any
1492 certificate verification operation and exploited in a DoS attack. Any
1493 application which performs certificate verification is vulnerable including
1494 OpenSSL clients and servers which enable client authentication.
1498 *) Segmentation fault for invalid PSS parameters fix
1500 The signature verification routines will crash with a NULL pointer
1501 dereference if presented with an ASN.1 signature using the RSA PSS
1502 algorithm and invalid parameters. Since these routines are used to verify
1503 certificate signature algorithms this can be used to crash any
1504 certificate verification operation and exploited in a DoS attack. Any
1505 application which performs certificate verification is vulnerable including
1506 OpenSSL clients and servers which enable client authentication.
1508 This issue was was reported to OpenSSL by Brian Carpenter.
1512 *) ASN.1 structure reuse memory corruption fix
1514 Reusing a structure in ASN.1 parsing may allow an attacker to cause
1515 memory corruption via an invalid write. Such reuse is and has been
1516 strongly discouraged and is believed to be rare.
1518 Applications that parse structures containing CHOICE or ANY DEFINED BY
1519 components may be affected. Certificate parsing (d2i_X509 and related
1520 functions) are however not affected. OpenSSL clients and servers are
1525 *) PKCS7 NULL pointer dereferences fix
1527 The PKCS#7 parsing code does not handle missing outer ContentInfo
1528 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs with
1529 missing content and trigger a NULL pointer dereference on parsing.
1531 Applications that verify PKCS#7 signatures, decrypt PKCS#7 data or
1532 otherwise parse PKCS#7 structures from untrusted sources are
1533 affected. OpenSSL clients and servers are not affected.
1535 This issue was reported to OpenSSL by Michal Zalewski (Google).
1539 *) DoS via reachable assert in SSLv2 servers fix
1541 A malicious client can trigger an OPENSSL_assert (i.e., an abort) in
1542 servers that both support SSLv2 and enable export cipher suites by sending
1543 a specially crafted SSLv2 CLIENT-MASTER-KEY message.
1545 This issue was discovered by Sean Burford (Google) and Emilia Käsper
1546 (OpenSSL development team).
1550 *) Empty CKE with client auth and DHE fix
1552 If client auth is used then a server can seg fault in the event of a DHE
1553 ciphersuite being selected and a zero length ClientKeyExchange message
1554 being sent by the client. This could be exploited in a DoS attack.
1558 *) Handshake with unseeded PRNG fix
1560 Under certain conditions an OpenSSL 1.0.2 client can complete a handshake
1561 with an unseeded PRNG. The conditions are:
1562 - The client is on a platform where the PRNG has not been seeded
1563 automatically, and the user has not seeded manually
1564 - A protocol specific client method version has been used (i.e. not
1565 SSL_client_methodv23)
1566 - A ciphersuite is used that does not require additional random data from
1567 the PRNG beyond the initial ClientHello client random (e.g. PSK-RC4-SHA).
1569 If the handshake succeeds then the client random that has been used will
1570 have been generated from a PRNG with insufficient entropy and therefore the
1571 output may be predictable.
1573 For example using the following command with an unseeded openssl will
1574 succeed on an unpatched platform:
1576 openssl s_client -psk 1a2b3c4d -tls1_2 -cipher PSK-RC4-SHA
1580 *) Use After Free following d2i_ECPrivatekey error fix
1582 A malformed EC private key file consumed via the d2i_ECPrivateKey function
1583 could cause a use after free condition. This, in turn, could cause a double
1584 free in several private key parsing functions (such as d2i_PrivateKey
1585 or EVP_PKCS82PKEY) and could lead to a DoS attack or memory corruption
1586 for applications that receive EC private keys from untrusted
1587 sources. This scenario is considered rare.
1589 This issue was discovered by the BoringSSL project and fixed in their
1594 *) X509_to_X509_REQ NULL pointer deref fix
1596 The function X509_to_X509_REQ will crash with a NULL pointer dereference if
1597 the certificate key is invalid. This function is rarely used in practice.
1599 This issue was discovered by Brian Carpenter.
1603 *) Removed the export ciphers from the DEFAULT ciphers
1606 Changes between 1.0.1l and 1.0.2 [22 Jan 2015]
1608 *) Facilitate "universal" ARM builds targeting range of ARM ISAs, e.g.
1609 ARMv5 through ARMv8, as opposite to "locking" it to single one.
1610 So far those who have to target multiple platforms would compromise
1611 and argue that binary targeting say ARMv5 would still execute on
1612 ARMv8. "Universal" build resolves this compromise by providing
1613 near-optimal performance even on newer platforms.
1616 *) Accelerated NIST P-256 elliptic curve implementation for x86_64
1617 (other platforms pending).
1618 [Shay Gueron & Vlad Krasnov (Intel Corp), Andy Polyakov]
1620 *) Add support for the SignedCertificateTimestampList certificate and
1621 OCSP response extensions from RFC6962.
1624 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
1625 for corner cases. (Certain input points at infinity could lead to
1626 bogus results, with non-infinity inputs mapped to infinity too.)
1629 *) Initial support for PowerISA 2.0.7, first implemented in POWER8.
1630 This covers AES, SHA256/512 and GHASH. "Initial" means that most
1631 common cases are optimized and there still is room for further
1632 improvements. Vector Permutation AES for Altivec is also added.
1635 *) Add support for little-endian ppc64 Linux target.
1636 [Marcelo Cerri (IBM)]
1638 *) Initial support for AMRv8 ISA crypto extensions. This covers AES,
1639 SHA1, SHA256 and GHASH. "Initial" means that most common cases
1640 are optimized and there still is room for further improvements.
1641 Both 32- and 64-bit modes are supported.
1642 [Andy Polyakov, Ard Biesheuvel (Linaro)]
1644 *) Improved ARMv7 NEON support.
1647 *) Support for SPARC Architecture 2011 crypto extensions, first
1648 implemented in SPARC T4. This covers AES, DES, Camellia, SHA1,
1649 SHA256/512, MD5, GHASH and modular exponentiation.
1650 [Andy Polyakov, David Miller]
1652 *) Accelerated modular exponentiation for Intel processors, a.k.a.
1654 [Shay Gueron & Vlad Krasnov (Intel Corp)]
1656 *) Support for new and upcoming Intel processors, including AVX2,
1657 BMI and SHA ISA extensions. This includes additional "stitched"
1658 implementations, AESNI-SHA256 and GCM, and multi-buffer support
1661 This work was sponsored by Intel Corp.
1664 *) Support for DTLS 1.2. This adds two sets of DTLS methods: DTLS_*_method()
1665 supports both DTLS 1.2 and 1.0 and should use whatever version the peer
1666 supports and DTLSv1_2_*_method() which supports DTLS 1.2 only.
1669 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
1670 this fixes a limitation in previous versions of OpenSSL.
1673 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
1674 MGF1 digest and OAEP label.
1677 *) Add EVP support for key wrapping algorithms, to avoid problems with
1678 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
1679 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
1680 algorithms and include tests cases.
1683 *) Add functions to allocate and set the fields of an ECDSA_METHOD
1685 [Douglas E. Engert, Steve Henson]
1687 *) New functions OPENSSL_gmtime_diff and ASN1_TIME_diff to find the
1688 difference in days and seconds between two tm or ASN1_TIME structures.
1691 *) Add -rev test option to s_server to just reverse order of characters
1692 received by client and send back to server. Also prints an abbreviated
1693 summary of the connection parameters.
1696 *) New option -brief for s_client and s_server to print out a brief summary
1697 of connection parameters.
1700 *) Add callbacks for arbitrary TLS extensions.
1701 [Trevor Perrin <trevp@trevp.net> and Ben Laurie]
1703 *) New option -crl_download in several openssl utilities to download CRLs
1704 from CRLDP extension in certificates.
1707 *) New options -CRL and -CRLform for s_client and s_server for CRLs.
1710 *) New function X509_CRL_diff to generate a delta CRL from the difference
1711 of two full CRLs. Add support to "crl" utility.
1714 *) New functions to set lookup_crls function and to retrieve
1715 X509_STORE from X509_STORE_CTX.
1718 *) Print out deprecated issuer and subject unique ID fields in
1722 *) Extend OCSP I/O functions so they can be used for simple general purpose
1723 HTTP as well as OCSP. New wrapper function which can be used to download
1724 CRLs using the OCSP API.
1727 *) Delegate command line handling in s_client/s_server to SSL_CONF APIs.
1730 *) SSL_CONF* functions. These provide a common framework for application
1731 configuration using configuration files or command lines.
1734 *) SSL/TLS tracing code. This parses out SSL/TLS records using the
1735 message callback and prints the results. Needs compile time option
1736 "enable-ssl-trace". New options to s_client and s_server to enable
1740 *) New ctrl and macro to retrieve supported points extensions.
1741 Print out extension in s_server and s_client.
1744 *) New functions to retrieve certificate signature and signature
1748 *) Add functions to retrieve and manipulate the raw cipherlist sent by a
1752 *) New Suite B modes for TLS code. These use and enforce the requirements
1753 of RFC6460: restrict ciphersuites, only permit Suite B algorithms and
1754 only use Suite B curves. The Suite B modes can be set by using the
1755 strings "SUITEB128", "SUITEB192" or "SUITEB128ONLY" for the cipherstring.
1758 *) New chain verification flags for Suite B levels of security. Check
1759 algorithms are acceptable when flags are set in X509_verify_cert.
1762 *) Make tls1_check_chain return a set of flags indicating checks passed
1763 by a certificate chain. Add additional tests to handle client
1764 certificates: checks for matching certificate type and issuer name
1768 *) If an attempt is made to use a signature algorithm not in the peer
1769 preference list abort the handshake. If client has no suitable
1770 signature algorithms in response to a certificate request do not
1771 use the certificate.
1774 *) If server EC tmp key is not in client preference list abort handshake.
1777 *) Add support for certificate stores in CERT structure. This makes it
1778 possible to have different stores per SSL structure or one store in
1779 the parent SSL_CTX. Include distinct stores for certificate chain
1780 verification and chain building. New ctrl SSL_CTRL_BUILD_CERT_CHAIN
1781 to build and store a certificate chain in CERT structure: returing
1782 an error if the chain cannot be built: this will allow applications
1783 to test if a chain is correctly configured.
1785 Note: if the CERT based stores are not set then the parent SSL_CTX
1786 store is used to retain compatibility with existing behaviour.
1790 *) New function ssl_set_client_disabled to set a ciphersuite disabled
1791 mask based on the current session, check mask when sending client
1792 hello and checking the requested ciphersuite.
1795 *) New ctrls to retrieve and set certificate types in a certificate
1796 request message. Print out received values in s_client. If certificate
1797 types is not set with custom values set sensible values based on
1798 supported signature algorithms.
1801 *) Support for distinct client and server supported signature algorithms.
1804 *) Add certificate callback. If set this is called whenever a certificate
1805 is required by client or server. An application can decide which
1806 certificate chain to present based on arbitrary criteria: for example
1807 supported signature algorithms. Add very simple example to s_server.
1808 This fixes many of the problems and restrictions of the existing client
1809 certificate callback: for example you can now clear an existing
1810 certificate and specify the whole chain.
1813 *) Add new "valid_flags" field to CERT_PKEY structure which determines what
1814 the certificate can be used for (if anything). Set valid_flags field
1815 in new tls1_check_chain function. Simplify ssl_set_cert_masks which used
1816 to have similar checks in it.
1818 Add new "cert_flags" field to CERT structure and include a "strict mode".
1819 This enforces some TLS certificate requirements (such as only permitting
1820 certificate signature algorithms contained in the supported algorithms
1821 extension) which some implementations ignore: this option should be used
1822 with caution as it could cause interoperability issues.
1825 *) Update and tidy signature algorithm extension processing. Work out
1826 shared signature algorithms based on preferences and peer algorithms
1827 and print them out in s_client and s_server. Abort handshake if no
1828 shared signature algorithms.
1831 *) Add new functions to allow customised supported signature algorithms
1832 for SSL and SSL_CTX structures. Add options to s_client and s_server
1836 *) New function SSL_certs_clear() to delete all references to certificates
1837 from an SSL structure. Before this once a certificate had been added
1838 it couldn't be removed.
1841 *) Integrate hostname, email address and IP address checking with certificate
1842 verification. New verify options supporting checking in openssl utility.
1845 *) Fixes and wildcard matching support to hostname and email checking
1846 functions. Add manual page.
1847 [Florian Weimer (Red Hat Product Security Team)]
1849 *) New functions to check a hostname email or IP address against a
1850 certificate. Add options x509 utility to print results of checks against
1854 *) Fix OCSP checking.
1855 [Rob Stradling <rob.stradling@comodo.com> and Ben Laurie]
1857 *) Initial experimental support for explicitly trusted non-root CAs.
1858 OpenSSL still tries to build a complete chain to a root but if an
1859 intermediate CA has a trust setting included that is used. The first
1860 setting is used: whether to trust (e.g., -addtrust option to the x509
1864 *) Add -trusted_first option which attempts to find certificates in the
1865 trusted store even if an untrusted chain is also supplied.
1868 *) MIPS assembly pack updates: support for MIPS32r2 and SmartMIPS ASE,
1869 platform support for Linux and Android.
1872 *) Support for linux-x32, ILP32 environment in x86_64 framework.
1875 *) Experimental multi-implementation support for FIPS capable OpenSSL.
1876 When in FIPS mode the approved implementations are used as normal,
1877 when not in FIPS mode the internal unapproved versions are used instead.
1878 This means that the FIPS capable OpenSSL isn't forced to use the
1879 (often lower performance) FIPS implementations outside FIPS mode.
1882 *) Transparently support X9.42 DH parameters when calling
1883 PEM_read_bio_DHparameters. This means existing applications can handle
1884 the new parameter format automatically.
1887 *) Initial experimental support for X9.42 DH parameter format: mainly
1888 to support use of 'q' parameter for RFC5114 parameters.
1891 *) Add DH parameters from RFC5114 including test data to dhtest.
1894 *) Support for automatic EC temporary key parameter selection. If enabled
1895 the most preferred EC parameters are automatically used instead of
1896 hardcoded fixed parameters. Now a server just has to call:
1897 SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically
1898 support ECDH and use the most appropriate parameters.
1901 *) Enhance and tidy EC curve and point format TLS extension code. Use
1902 static structures instead of allocation if default values are used.
1903 New ctrls to set curves we wish to support and to retrieve shared curves.
1904 Print out shared curves in s_server. New options to s_server and s_client
1905 to set list of supported curves.
1908 *) New ctrls to retrieve supported signature algorithms and
1909 supported curve values as an array of NIDs. Extend openssl utility
1910 to print out received values.
1913 *) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert
1914 between NIDs and the more common NIST names such as "P-256". Enhance
1915 ecparam utility and ECC method to recognise the NIST names for curves.
1918 *) Enhance SSL/TLS certificate chain handling to support different
1919 chains for each certificate instead of one chain in the parent SSL_CTX.
1922 *) Support for fixed DH ciphersuite client authentication: where both
1923 server and client use DH certificates with common parameters.
1926 *) Support for fixed DH ciphersuites: those requiring DH server
1930 *) New function i2d_re_X509_tbs for re-encoding the TBS portion of
1932 Note: Related 1.0.2-beta specific macros X509_get_cert_info,
1933 X509_CINF_set_modified, X509_CINF_get_issuer, X509_CINF_get_extensions and
1934 X509_CINF_get_signature were reverted post internal team review.
1936 Changes between 1.0.1k and 1.0.1l [15 Jan 2015]
1938 *) Build fixes for the Windows and OpenVMS platforms
1939 [Matt Caswell and Richard Levitte]
1941 Changes between 1.0.1j and 1.0.1k [8 Jan 2015]
1943 *) Fix DTLS segmentation fault in dtls1_get_record. A carefully crafted DTLS
1944 message can cause a segmentation fault in OpenSSL due to a NULL pointer
1945 dereference. This could lead to a Denial Of Service attack. Thanks to
1946 Markus Stenberg of Cisco Systems, Inc. for reporting this issue.
1950 *) Fix DTLS memory leak in dtls1_buffer_record. A memory leak can occur in the
1951 dtls1_buffer_record function under certain conditions. In particular this
1952 could occur if an attacker sent repeated DTLS records with the same
1953 sequence number but for the next epoch. The memory leak could be exploited
1954 by an attacker in a Denial of Service attack through memory exhaustion.
1955 Thanks to Chris Mueller for reporting this issue.
1959 *) Fix issue where no-ssl3 configuration sets method to NULL. When openssl is
1960 built with the no-ssl3 option and a SSL v3 ClientHello is received the ssl
1961 method would be set to NULL which could later result in a NULL pointer
1962 dereference. Thanks to Frank Schmirler for reporting this issue.
1966 *) Abort handshake if server key exchange message is omitted for ephemeral
1969 Thanks to Karthikeyan Bhargavan of the PROSECCO team at INRIA for
1970 reporting this issue.
1974 *) Remove non-export ephemeral RSA code on client and server. This code
1975 violated the TLS standard by allowing the use of temporary RSA keys in
1976 non-export ciphersuites and could be used by a server to effectively
1977 downgrade the RSA key length used to a value smaller than the server
1978 certificate. Thanks for Karthikeyan Bhargavan of the PROSECCO team at
1979 INRIA or reporting this issue.
1983 *) Fixed issue where DH client certificates are accepted without verification.
1984 An OpenSSL server will accept a DH certificate for client authentication
1985 without the certificate verify message. This effectively allows a client to
1986 authenticate without the use of a private key. This only affects servers
1987 which trust a client certificate authority which issues certificates
1988 containing DH keys: these are extremely rare and hardly ever encountered.
1989 Thanks for Karthikeyan Bhargavan of the PROSECCO team at INRIA or reporting
1994 *) Ensure that the session ID context of an SSL is updated when its
1995 SSL_CTX is updated via SSL_set_SSL_CTX.
1997 The session ID context is typically set from the parent SSL_CTX,
1998 and can vary with the CTX.
2001 *) Fix various certificate fingerprint issues.
2003 By using non-DER or invalid encodings outside the signed portion of a
2004 certificate the fingerprint can be changed without breaking the signature.
2005 Although no details of the signed portion of the certificate can be changed
2006 this can cause problems with some applications: e.g. those using the
2007 certificate fingerprint for blacklists.
2009 1. Reject signatures with non zero unused bits.
2011 If the BIT STRING containing the signature has non zero unused bits reject
2012 the signature. All current signature algorithms require zero unused bits.
2014 2. Check certificate algorithm consistency.
2016 Check the AlgorithmIdentifier inside TBS matches the one in the
2017 certificate signature. NB: this will result in signature failure
2018 errors for some broken certificates.
2020 Thanks to Konrad Kraszewski from Google for reporting this issue.
2022 3. Check DSA/ECDSA signatures use DER.
2024 Reencode DSA/ECDSA signatures and compare with the original received
2025 signature. Return an error if there is a mismatch.
2027 This will reject various cases including garbage after signature
2028 (thanks to Antti Karjalainen and Tuomo Untinen from the Codenomicon CROSS
2029 program for discovering this case) and use of BER or invalid ASN.1 INTEGERs
2030 (negative or with leading zeroes).
2032 Further analysis was conducted and fixes were developed by Stephen Henson
2033 of the OpenSSL core team.
2038 *) Correct Bignum squaring. Bignum squaring (BN_sqr) may produce incorrect
2039 results on some platforms, including x86_64. This bug occurs at random
2040 with a very low probability, and is not known to be exploitable in any
2041 way, though its exact impact is difficult to determine. Thanks to Pieter
2042 Wuille (Blockstream) who reported this issue and also suggested an initial
2043 fix. Further analysis was conducted by the OpenSSL development team and
2044 Adam Langley of Google. The final fix was developed by Andy Polyakov of
2045 the OpenSSL core team.
2049 *) Do not resume sessions on the server if the negotiated protocol
2050 version does not match the session's version. Resuming with a different
2051 version, while not strictly forbidden by the RFC, is of questionable
2052 sanity and breaks all known clients.
2053 [David Benjamin, Emilia Käsper]
2055 *) Tighten handling of the ChangeCipherSpec (CCS) message: reject
2056 early CCS messages during renegotiation. (Note that because
2057 renegotiation is encrypted, this early CCS was not exploitable.)
2060 *) Tighten client-side session ticket handling during renegotiation:
2061 ensure that the client only accepts a session ticket if the server sends
2062 the extension anew in the ServerHello. Previously, a TLS client would
2063 reuse the old extension state and thus accept a session ticket if one was
2064 announced in the initial ServerHello.
2066 Similarly, ensure that the client requires a session ticket if one
2067 was advertised in the ServerHello. Previously, a TLS client would
2068 ignore a missing NewSessionTicket message.
2071 Changes between 1.0.1i and 1.0.1j [15 Oct 2014]
2073 *) SRTP Memory Leak.
2075 A flaw in the DTLS SRTP extension parsing code allows an attacker, who
2076 sends a carefully crafted handshake message, to cause OpenSSL to fail
2077 to free up to 64k of memory causing a memory leak. This could be
2078 exploited in a Denial Of Service attack. This issue affects OpenSSL
2079 1.0.1 server implementations for both SSL/TLS and DTLS regardless of
2080 whether SRTP is used or configured. Implementations of OpenSSL that
2081 have been compiled with OPENSSL_NO_SRTP defined are not affected.
2083 The fix was developed by the OpenSSL team.
2087 *) Session Ticket Memory Leak.
2089 When an OpenSSL SSL/TLS/DTLS server receives a session ticket the
2090 integrity of that ticket is first verified. In the event of a session
2091 ticket integrity check failing, OpenSSL will fail to free memory
2092 causing a memory leak. By sending a large number of invalid session
2093 tickets an attacker could exploit this issue in a Denial Of Service
2098 *) Build option no-ssl3 is incomplete.
2100 When OpenSSL is configured with "no-ssl3" as a build option, servers
2101 could accept and complete a SSL 3.0 handshake, and clients could be
2102 configured to send them.
2104 [Akamai and the OpenSSL team]
2106 *) Add support for TLS_FALLBACK_SCSV.
2107 Client applications doing fallback retries should call
2108 SSL_set_mode(s, SSL_MODE_SEND_FALLBACK_SCSV).
2110 [Adam Langley, Bodo Moeller]
2112 *) Add additional DigestInfo checks.
2114 Reencode DigestInto in DER and check against the original when
2115 verifying RSA signature: this will reject any improperly encoded
2116 DigestInfo structures.
2118 Note: this is a precautionary measure and no attacks are currently known.
2122 Changes between 1.0.1h and 1.0.1i [6 Aug 2014]
2124 *) Fix SRP buffer overrun vulnerability. Invalid parameters passed to the
2125 SRP code can be overrun an internal buffer. Add sanity check that
2126 g, A, B < N to SRP code.
2128 Thanks to Sean Devlin and Watson Ladd of Cryptography Services, NCC
2129 Group for discovering this issue.
2133 *) A flaw in the OpenSSL SSL/TLS server code causes the server to negotiate
2134 TLS 1.0 instead of higher protocol versions when the ClientHello message
2135 is badly fragmented. This allows a man-in-the-middle attacker to force a
2136 downgrade to TLS 1.0 even if both the server and the client support a
2137 higher protocol version, by modifying the client's TLS records.
2139 Thanks to David Benjamin and Adam Langley (Google) for discovering and
2140 researching this issue.
2144 *) OpenSSL DTLS clients enabling anonymous (EC)DH ciphersuites are subject
2145 to a denial of service attack. A malicious server can crash the client
2146 with a null pointer dereference (read) by specifying an anonymous (EC)DH
2147 ciphersuite and sending carefully crafted handshake messages.
2149 Thanks to Felix Gröbert (Google) for discovering and researching this
2154 *) By sending carefully crafted DTLS packets an attacker could cause openssl
2155 to leak memory. This can be exploited through a Denial of Service attack.
2156 Thanks to Adam Langley for discovering and researching this issue.
2160 *) An attacker can force openssl to consume large amounts of memory whilst
2161 processing DTLS handshake messages. This can be exploited through a
2162 Denial of Service attack.
2163 Thanks to Adam Langley for discovering and researching this issue.
2167 *) An attacker can force an error condition which causes openssl to crash
2168 whilst processing DTLS packets due to memory being freed twice. This
2169 can be exploited through a Denial of Service attack.
2170 Thanks to Adam Langley and Wan-Teh Chang for discovering and researching
2175 *) If a multithreaded client connects to a malicious server using a resumed
2176 session and the server sends an ec point format extension it could write
2177 up to 255 bytes to freed memory.
2179 Thanks to Gabor Tyukasz (LogMeIn Inc) for discovering and researching this
2184 *) A malicious server can crash an OpenSSL client with a null pointer
2185 dereference (read) by specifying an SRP ciphersuite even though it was not
2186 properly negotiated with the client. This can be exploited through a
2187 Denial of Service attack.
2189 Thanks to Joonas Kuorilehto and Riku Hietamäki (Codenomicon) for
2190 discovering and researching this issue.
2194 *) A flaw in OBJ_obj2txt may cause pretty printing functions such as
2195 X509_name_oneline, X509_name_print_ex et al. to leak some information
2196 from the stack. Applications may be affected if they echo pretty printing
2197 output to the attacker.
2199 Thanks to Ivan Fratric (Google) for discovering this issue.
2201 [Emilia Käsper, and Steve Henson]
2203 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
2204 for corner cases. (Certain input points at infinity could lead to
2205 bogus results, with non-infinity inputs mapped to infinity too.)
2208 Changes between 1.0.1g and 1.0.1h [5 Jun 2014]
2210 *) Fix for SSL/TLS MITM flaw. An attacker using a carefully crafted
2211 handshake can force the use of weak keying material in OpenSSL
2212 SSL/TLS clients and servers.
2214 Thanks to KIKUCHI Masashi (Lepidum Co. Ltd.) for discovering and
2215 researching this issue. (CVE-2014-0224)
2216 [KIKUCHI Masashi, Steve Henson]
2218 *) Fix DTLS recursion flaw. By sending an invalid DTLS handshake to an
2219 OpenSSL DTLS client the code can be made to recurse eventually crashing
2222 Thanks to Imre Rad (Search-Lab Ltd.) for discovering this issue.
2224 [Imre Rad, Steve Henson]
2226 *) Fix DTLS invalid fragment vulnerability. A buffer overrun attack can
2227 be triggered by sending invalid DTLS fragments to an OpenSSL DTLS
2228 client or server. This is potentially exploitable to run arbitrary
2229 code on a vulnerable client or server.
2231 Thanks to Jüri Aedla for reporting this issue. (CVE-2014-0195)
2232 [Jüri Aedla, Steve Henson]
2234 *) Fix bug in TLS code where clients enable anonymous ECDH ciphersuites
2235 are subject to a denial of service attack.
2237 Thanks to Felix Gröbert and Ivan Fratric at Google for discovering
2238 this issue. (CVE-2014-3470)
2239 [Felix Gröbert, Ivan Fratric, Steve Henson]
2241 *) Harmonize version and its documentation. -f flag is used to display
2243 [mancha <mancha1@zoho.com>]
2245 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
2246 in i2d_ECPrivateKey.
2247 [mancha <mancha1@zoho.com>]
2249 *) Fix some double frees. These are not thought to be exploitable.
2250 [mancha <mancha1@zoho.com>]
2252 Changes between 1.0.1f and 1.0.1g [7 Apr 2014]
2254 *) A missing bounds check in the handling of the TLS heartbeat extension
2255 can be used to reveal up to 64k of memory to a connected client or
2258 Thanks for Neel Mehta of Google Security for discovering this bug and to
2259 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
2260 preparing the fix (CVE-2014-0160)
2261 [Adam Langley, Bodo Moeller]
2263 *) Fix for the attack described in the paper "Recovering OpenSSL
2264 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
2265 by Yuval Yarom and Naomi Benger. Details can be obtained from:
2266 http://eprint.iacr.org/2014/140
2268 Thanks to Yuval Yarom and Naomi Benger for discovering this
2269 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
2270 [Yuval Yarom and Naomi Benger]
2272 *) TLS pad extension: draft-agl-tls-padding-03
2274 Workaround for the "TLS hang bug" (see FAQ and PR#2771): if the
2275 TLS client Hello record length value would otherwise be > 255 and
2276 less that 512 pad with a dummy extension containing zeroes so it
2277 is at least 512 bytes long.
2279 [Adam Langley, Steve Henson]
2281 Changes between 1.0.1e and 1.0.1f [6 Jan 2014]
2283 *) Fix for TLS record tampering bug. A carefully crafted invalid
2284 handshake could crash OpenSSL with a NULL pointer exception.
2285 Thanks to Anton Johansson for reporting this issues.
2288 *) Keep original DTLS digest and encryption contexts in retransmission
2289 structures so we can use the previous session parameters if they need
2290 to be resent. (CVE-2013-6450)
2293 *) Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which
2294 avoids preferring ECDHE-ECDSA ciphers when the client appears to be
2295 Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for
2296 several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug
2297 is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing
2298 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer.
2299 [Rob Stradling, Adam Langley]
2301 Changes between 1.0.1d and 1.0.1e [11 Feb 2013]
2303 *) Correct fix for CVE-2013-0169. The original didn't work on AES-NI
2304 supporting platforms or when small records were transferred.
2305 [Andy Polyakov, Steve Henson]
2307 Changes between 1.0.1c and 1.0.1d [5 Feb 2013]
2309 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
2311 This addresses the flaw in CBC record processing discovered by
2312 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
2313 at: http://www.isg.rhul.ac.uk/tls/
2315 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
2316 Security Group at Royal Holloway, University of London
2317 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
2318 Emilia Käsper for the initial patch.
2320 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
2322 *) Fix flaw in AESNI handling of TLS 1.2 and 1.1 records for CBC mode
2323 ciphersuites which can be exploited in a denial of service attack.
2324 Thanks go to and to Adam Langley <agl@chromium.org> for discovering
2325 and detecting this bug and to Wolfgang Ettlinger
2326 <wolfgang.ettlinger@gmail.com> for independently discovering this issue.
2330 *) Return an error when checking OCSP signatures when key is NULL.
2331 This fixes a DoS attack. (CVE-2013-0166)
2334 *) Make openssl verify return errors.
2335 [Chris Palmer <palmer@google.com> and Ben Laurie]
2337 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
2338 the right response is stapled. Also change SSL_get_certificate()
2339 so it returns the certificate actually sent.
2340 See http://rt.openssl.org/Ticket/Display.html?id=2836.
2341 [Rob Stradling <rob.stradling@comodo.com>]
2343 *) Fix possible deadlock when decoding public keys.
2346 *) Don't use TLS 1.0 record version number in initial client hello
2350 Changes between 1.0.1b and 1.0.1c [10 May 2012]
2352 *) Sanity check record length before skipping explicit IV in TLS
2353 1.2, 1.1 and DTLS to fix DoS attack.
2355 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
2356 fuzzing as a service testing platform.
2360 *) Initialise tkeylen properly when encrypting CMS messages.
2361 Thanks to Solar Designer of Openwall for reporting this issue.
2364 *) In FIPS mode don't try to use composite ciphers as they are not
2368 Changes between 1.0.1a and 1.0.1b [26 Apr 2012]
2370 *) OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and
2371 1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately
2372 mean any application compiled against OpenSSL 1.0.0 headers setting
2373 SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disablng
2374 TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to
2375 0x10000000L Any application which was previously compiled against
2376 OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1
2377 will need to be recompiled as a result. Letting be results in
2378 inability to disable specifically TLS 1.1 and in client context,
2379 in unlike event, limit maximum offered version to TLS 1.0 [see below].
2382 *) In order to ensure interoperabilty SSL_OP_NO_protocolX does not
2383 disable just protocol X, but all protocols above X *if* there are
2384 protocols *below* X still enabled. In more practical terms it means
2385 that if application wants to disable TLS1.0 in favor of TLS1.1 and
2386 above, it's not sufficient to pass SSL_OP_NO_TLSv1, one has to pass
2387 SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2. This applies to
2391 Changes between 1.0.1 and 1.0.1a [19 Apr 2012]
2393 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
2394 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
2395 in CRYPTO_realloc_clean.
2397 Thanks to Tavis Ormandy, Google Security Team, for discovering this
2398 issue and to Adam Langley <agl@chromium.org> for fixing it.
2400 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
2402 *) Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections.
2405 *) Workarounds for some broken servers that "hang" if a client hello
2406 record length exceeds 255 bytes.
2408 1. Do not use record version number > TLS 1.0 in initial client
2409 hello: some (but not all) hanging servers will now work.
2410 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate
2411 the number of ciphers sent in the client hello. This should be
2412 set to an even number, such as 50, for example by passing:
2413 -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure.
2414 Most broken servers should now work.
2415 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable
2416 TLS 1.2 client support entirely.
2419 *) Fix SEGV in Vector Permutation AES module observed in OpenSSH.
2422 Changes between 1.0.0h and 1.0.1 [14 Mar 2012]
2424 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET
2425 STRING form instead of a DigestInfo.
2428 *) The format used for MDC2 RSA signatures is inconsistent between EVP
2429 and the RSA_sign/RSA_verify functions. This was made more apparent when
2430 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
2431 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
2432 the correct format in RSA_verify so both forms transparently work.
2435 *) Some servers which support TLS 1.0 can choke if we initially indicate
2436 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
2437 encrypted premaster secret. As a workaround use the maximum permitted
2438 client version in client hello, this should keep such servers happy
2439 and still work with previous versions of OpenSSL.
2442 *) Add support for TLS/DTLS heartbeats.
2443 [Robin Seggelmann <seggelmann@fh-muenster.de>]
2445 *) Add support for SCTP.
2446 [Robin Seggelmann <seggelmann@fh-muenster.de>]
2448 *) Improved PRNG seeding for VOS.
2449 [Paul Green <Paul.Green@stratus.com>]
2451 *) Extensive assembler packs updates, most notably:
2453 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
2454 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
2455 - x86_64: bit-sliced AES implementation;
2456 - ARM: NEON support, contemporary platforms optimizations;
2457 - s390x: z196 support;
2458 - *: GHASH and GF(2^m) multiplication implementations;
2462 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
2463 (removal of unnecessary code)
2464 [Peter Sylvester <peter.sylvester@edelweb.fr>]
2466 *) Add TLS key material exporter from RFC 5705.
2469 *) Add DTLS-SRTP negotiation from RFC 5764.
2472 *) Add Next Protocol Negotiation,
2473 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
2474 disabled with a no-npn flag to config or Configure. Code donated
2476 [Adam Langley <agl@google.com> and Ben Laurie]
2478 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
2479 NIST-P256, NIST-P521, with constant-time single point multiplication on
2480 typical inputs. Compiler support for the nonstandard type __uint128_t is
2481 required to use this (present in gcc 4.4 and later, for 64-bit builds).
2482 Code made available under Apache License version 2.0.
2484 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
2485 line to include this in your build of OpenSSL, and run "make depend" (or
2486 "make update"). This enables the following EC_METHODs:
2488 EC_GFp_nistp224_method()
2489 EC_GFp_nistp256_method()
2490 EC_GFp_nistp521_method()
2492 EC_GROUP_new_by_curve_name() will automatically use these (while
2493 EC_GROUP_new_curve_GFp() currently prefers the more flexible
2495 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
2497 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
2498 all platforms. Move ssize_t definition from e_os.h to the public
2499 header file e_os2.h as it now appears in public header file cms.h
2502 *) New -sigopt option to the ca, req and x509 utilities. Additional
2503 signature parameters can be passed using this option and in
2507 *) Add RSA PSS signing function. This will generate and set the
2508 appropriate AlgorithmIdentifiers for PSS based on those in the
2509 corresponding EVP_MD_CTX structure. No application support yet.
2512 *) Support for companion algorithm specific ASN1 signing routines.
2513 New function ASN1_item_sign_ctx() signs a pre-initialised
2514 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
2515 the appropriate parameters.
2518 *) Add new algorithm specific ASN1 verification initialisation function
2519 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
2520 handling will be the same no matter what EVP_PKEY_METHOD is used.
2521 Add a PSS handler to support verification of PSS signatures: checked
2522 against a number of sample certificates.
2525 *) Add signature printing for PSS. Add PSS OIDs.
2526 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
2528 *) Add algorithm specific signature printing. An individual ASN1 method
2529 can now print out signatures instead of the standard hex dump.
2531 More complex signatures (e.g. PSS) can print out more meaningful
2532 information. Include DSA version that prints out the signature
2536 *) Password based recipient info support for CMS library: implementing
2540 *) Split password based encryption into PBES2 and PBKDF2 functions. This
2541 neatly separates the code into cipher and PBE sections and is required
2542 for some algorithms that split PBES2 into separate pieces (such as
2543 password based CMS).
2546 *) Session-handling fixes:
2547 - Fix handling of connections that are resuming with a session ID,
2548 but also support Session Tickets.
2549 - Fix a bug that suppressed issuing of a new ticket if the client
2550 presented a ticket with an expired session.
2551 - Try to set the ticket lifetime hint to something reasonable.
2552 - Make tickets shorter by excluding irrelevant information.
2553 - On the client side, don't ignore renewed tickets.
2554 [Adam Langley, Bodo Moeller (Google)]
2556 *) Fix PSK session representation.
2559 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
2561 This work was sponsored by Intel.
2564 *) Add GCM support to TLS library. Some custom code is needed to split
2565 the IV between the fixed (from PRF) and explicit (from TLS record)
2566 portions. This adds all GCM ciphersuites supported by RFC5288 and
2567 RFC5289. Generalise some AES* cipherstrings to include GCM and
2568 add a special AESGCM string for GCM only.
2571 *) Expand range of ctrls for AES GCM. Permit setting invocation
2572 field on decrypt and retrieval of invocation field only on encrypt.
2575 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
2576 As required by RFC5289 these ciphersuites cannot be used if for
2577 versions of TLS earlier than 1.2.
2580 *) For FIPS capable OpenSSL interpret a NULL default public key method
2581 as unset and return the appropriate default but do *not* set the default.
2582 This means we can return the appropriate method in applications that
2583 switch between FIPS and non-FIPS modes.
2586 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
2587 ENGINE is used then we cannot handle that in the FIPS module so we
2588 keep original code iff non-FIPS operations are allowed.
2591 *) Add -attime option to openssl utilities.
2592 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
2594 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
2597 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
2598 FIPS EC methods unconditionally for now.
2601 *) New build option no-ec2m to disable characteristic 2 code.
2604 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
2605 all cases can be covered as some introduce binary incompatibilities.
2608 *) Redirect RSA operations to FIPS module including keygen,
2609 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
2612 *) Add similar low level API blocking to ciphers.
2615 *) Low level digest APIs are not approved in FIPS mode: any attempt
2616 to use these will cause a fatal error. Applications that *really* want
2617 to use them can use the private_* version instead.
2620 *) Redirect cipher operations to FIPS module for FIPS builds.
2623 *) Redirect digest operations to FIPS module for FIPS builds.
2626 *) Update build system to add "fips" flag which will link in fipscanister.o
2627 for static and shared library builds embedding a signature if needed.
2630 *) Output TLS supported curves in preference order instead of numerical
2631 order. This is currently hardcoded for the highest order curves first.
2632 This should be configurable so applications can judge speed vs strength.
2635 *) Add TLS v1.2 server support for client authentication.
2638 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
2642 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
2643 FIPS modules versions.
2646 *) Add TLS v1.2 client side support for client authentication. Keep cache
2647 of handshake records longer as we don't know the hash algorithm to use
2648 until after the certificate request message is received.
2651 *) Initial TLS v1.2 client support. Add a default signature algorithms
2652 extension including all the algorithms we support. Parse new signature
2653 format in client key exchange. Relax some ECC signing restrictions for
2654 TLS v1.2 as indicated in RFC5246.
2657 *) Add server support for TLS v1.2 signature algorithms extension. Switch
2658 to new signature format when needed using client digest preference.
2659 All server ciphersuites should now work correctly in TLS v1.2. No client
2660 support yet and no support for client certificates.
2663 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
2664 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
2665 ciphersuites. At present only RSA key exchange ciphersuites work with
2666 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
2667 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
2668 and version checking.
2671 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
2672 with this defined it will not be affected by any changes to ssl internal
2673 structures. Add several utility functions to allow openssl application
2674 to work with OPENSSL_NO_SSL_INTERN defined.
2678 [Tom Wu <tjw@cs.stanford.edu> and Ben Laurie]
2680 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
2683 *) Permit abbreviated handshakes when renegotiating using the function
2684 SSL_renegotiate_abbreviated().
2685 [Robin Seggelmann <seggelmann@fh-muenster.de>]
2687 *) Add call to ENGINE_register_all_complete() to
2688 ENGINE_load_builtin_engines(), so some implementations get used
2689 automatically instead of needing explicit application support.
2692 *) Add support for TLS key exporter as described in RFC5705.
2693 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
2695 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
2696 a few changes are required:
2698 Add SSL_OP_NO_TLSv1_1 flag.
2699 Add TLSv1_1 methods.
2700 Update version checking logic to handle version 1.1.
2701 Add explicit IV handling (ported from DTLS code).
2702 Add command line options to s_client/s_server.
2705 Changes between 1.0.0g and 1.0.0h [12 Mar 2012]
2707 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
2708 in CMS and PKCS7 code. When RSA decryption fails use a random key for
2709 content decryption and always return the same error. Note: this attack
2710 needs on average 2^20 messages so it only affects automated senders. The
2711 old behaviour can be reenabled in the CMS code by setting the
2712 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
2713 an MMA defence is not necessary.
2714 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
2715 this issue. (CVE-2012-0884)
2718 *) Fix CVE-2011-4619: make sure we really are receiving a
2719 client hello before rejecting multiple SGC restarts. Thanks to
2720 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
2723 Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
2725 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
2726 Thanks to Antonio Martin, Enterprise Secure Access Research and
2727 Development, Cisco Systems, Inc. for discovering this bug and
2728 preparing a fix. (CVE-2012-0050)
2731 Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
2733 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
2734 of the Vaudenay padding oracle attack on CBC mode encryption
2735 which enables an efficient plaintext recovery attack against
2736 the OpenSSL implementation of DTLS. Their attack exploits timing
2737 differences arising during decryption processing. A research
2738 paper describing this attack can be found at:
2739 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
2740 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
2741 Security Group at Royal Holloway, University of London
2742 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
2743 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
2744 for preparing the fix. (CVE-2011-4108)
2745 [Robin Seggelmann, Michael Tuexen]
2747 *) Clear bytes used for block padding of SSL 3.0 records.
2749 [Adam Langley (Google)]
2751 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
2752 Kadianakis <desnacked@gmail.com> for discovering this issue and
2753 Adam Langley for preparing the fix. (CVE-2011-4619)
2754 [Adam Langley (Google)]
2756 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
2757 [Andrey Kulikov <amdeich@gmail.com>]
2759 *) Prevent malformed RFC3779 data triggering an assertion failure.
2760 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
2761 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
2762 [Rob Austein <sra@hactrn.net>]
2764 *) Improved PRNG seeding for VOS.
2765 [Paul Green <Paul.Green@stratus.com>]
2767 *) Fix ssl_ciph.c set-up race.
2768 [Adam Langley (Google)]
2770 *) Fix spurious failures in ecdsatest.c.
2771 [Emilia Käsper (Google)]
2773 *) Fix the BIO_f_buffer() implementation (which was mixing different
2774 interpretations of the '..._len' fields).
2775 [Adam Langley (Google)]
2777 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
2778 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
2779 threads won't reuse the same blinding coefficients.
2781 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
2782 lock to call BN_BLINDING_invert_ex, and avoids one use of
2783 BN_BLINDING_update for each BN_BLINDING structure (previously,
2784 the last update always remained unused).
2785 [Emilia Käsper (Google)]
2787 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
2788 [Bob Buckholz (Google)]
2790 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
2792 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
2793 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
2794 [Kaspar Brand <ossl@velox.ch>]
2796 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
2797 for multi-threaded use of ECDH. (CVE-2011-3210)
2798 [Adam Langley (Google)]
2800 *) Fix x509_name_ex_d2i memory leak on bad inputs.
2803 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
2804 signature public key algorithm by using OID xref utilities instead.
2805 Before this you could only use some ECC ciphersuites with SHA1 only.
2808 *) Add protection against ECDSA timing attacks as mentioned in the paper
2809 by Billy Bob Brumley and Nicola Tuveri, see:
2811 http://eprint.iacr.org/2011/232.pdf
2813 [Billy Bob Brumley and Nicola Tuveri]
2815 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
2817 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
2818 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
2820 *) Fix bug in string printing code: if *any* escaping is enabled we must
2821 escape the escape character (backslash) or the resulting string is
2825 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
2827 *) Disable code workaround for ancient and obsolete Netscape browsers
2828 and servers: an attacker can use it in a ciphersuite downgrade attack.
2829 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
2832 *) Fixed J-PAKE implementation error, originally discovered by
2833 Sebastien Martini, further info and confirmation from Stefan
2834 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
2837 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
2839 *) Fix extension code to avoid race conditions which can result in a buffer
2840 overrun vulnerability: resumed sessions must not be modified as they can
2841 be shared by multiple threads. CVE-2010-3864
2844 *) Fix WIN32 build system to correctly link an ENGINE directory into
2848 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
2850 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
2852 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
2854 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
2856 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
2857 context. The operation can be customised via the ctrl mechanism in
2858 case ENGINEs want to include additional functionality.
2861 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
2864 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
2865 output hashes compatible with older versions of OpenSSL.
2866 [Willy Weisz <weisz@vcpc.univie.ac.at>]
2868 *) Fix compression algorithm handling: if resuming a session use the
2869 compression algorithm of the resumed session instead of determining
2870 it from client hello again. Don't allow server to change algorithm.
2873 *) Add load_crls() function to apps tidying load_certs() too. Add option
2874 to verify utility to allow additional CRLs to be included.
2877 *) Update OCSP request code to permit adding custom headers to the request:
2878 some responders need this.
2881 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
2883 [Julia Lawall <julia@diku.dk>]
2885 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
2886 needlessly dereferenced structures, used obsolete functions and
2887 didn't handle all updated verify codes correctly.
2890 *) Disable MD2 in the default configuration.
2893 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
2894 indicate the initial BIO being pushed or popped. This makes it possible
2895 to determine whether the BIO is the one explicitly called or as a result
2896 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
2897 it handles reference counts correctly and doesn't zero out the I/O bio
2898 when it is not being explicitly popped. WARNING: applications which
2899 included workarounds for the old buggy behaviour will need to be modified
2900 or they could free up already freed BIOs.
2903 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
2904 renaming to all platforms (within the 0.9.8 branch, this was
2905 done conditionally on Netware platforms to avoid a name clash).
2906 [Guenter <lists@gknw.net>]
2908 *) Add ECDHE and PSK support to DTLS.
2909 [Michael Tuexen <tuexen@fh-muenster.de>]
2911 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
2915 *) Add "missing" function EVP_MD_flags() (without this the only way to
2916 retrieve a digest flags is by accessing the structure directly. Update
2917 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
2918 or cipher is registered as in the "from" argument. Print out all
2919 registered digests in the dgst usage message instead of manually
2920 attempting to work them out.
2923 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
2924 this allows the use of compression and extensions. Change default cipher
2925 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
2926 by default unless an application cipher string requests it.
2929 *) Alter match criteria in PKCS12_parse(). It used to try to use local
2930 key ids to find matching certificates and keys but some PKCS#12 files
2931 don't follow the (somewhat unwritten) rules and this strategy fails.
2932 Now just gather all certificates together and the first private key
2933 then look for the first certificate that matches the key.
2936 *) Support use of registered digest and cipher names for dgst and cipher
2937 commands instead of having to add each one as a special case. So now
2944 openssl dgst -sha256 foo
2946 and this works for ENGINE based algorithms too.
2950 *) Update Gost ENGINE to support parameter files.
2951 [Victor B. Wagner <vitus@cryptocom.ru>]
2953 *) Support GeneralizedTime in ca utility.
2954 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
2956 *) Enhance the hash format used for certificate directory links. The new
2957 form uses the canonical encoding (meaning equivalent names will work
2958 even if they aren't identical) and uses SHA1 instead of MD5. This form
2959 is incompatible with the older format and as a result c_rehash should
2960 be used to rebuild symbolic links.
2963 *) Make PKCS#8 the default write format for private keys, replacing the
2964 traditional format. This form is standardised, more secure and doesn't
2965 include an implicit MD5 dependency.
2968 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
2969 committed to OpenSSL should pass this lot as a minimum.
2972 *) Add session ticket override functionality for use by EAP-FAST.
2973 [Jouni Malinen <j@w1.fi>]
2975 *) Modify HMAC functions to return a value. Since these can be implemented
2976 in an ENGINE errors can occur.
2979 *) Type-checked OBJ_bsearch_ex.
2982 *) Type-checked OBJ_bsearch. Also some constification necessitated
2983 by type-checking. Still to come: TXT_DB, bsearch(?),
2984 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
2988 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
2989 seconds to a tm structure directly, instead of going through OS
2990 specific date routines. This avoids any issues with OS routines such
2991 as the year 2038 bug. New *_adj() functions for ASN1 time structures
2992 and X509_time_adj_ex() to cover the extended range. The existing
2993 X509_time_adj() is still usable and will no longer have any date issues.
2996 *) Delta CRL support. New use deltas option which will attempt to locate
2997 and search any appropriate delta CRLs available.
2999 This work was sponsored by Google.
3002 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
3003 code and add additional score elements. Validate alternate CRL paths
3004 as part of the CRL checking and indicate a new error "CRL path validation
3005 error" in this case. Applications wanting additional details can use
3006 the verify callback and check the new "parent" field. If this is not
3007 NULL CRL path validation is taking place. Existing applications wont
3008 see this because it requires extended CRL support which is off by
3011 This work was sponsored by Google.
3014 *) Support for freshest CRL extension.
3016 This work was sponsored by Google.
3019 *) Initial indirect CRL support. Currently only supported in the CRLs
3020 passed directly and not via lookup. Process certificate issuer
3021 CRL entry extension and lookup CRL entries by bother issuer name
3022 and serial number. Check and process CRL issuer entry in IDP extension.
3024 This work was sponsored by Google.
3027 *) Add support for distinct certificate and CRL paths. The CRL issuer
3028 certificate is validated separately in this case. Only enabled if
3029 an extended CRL support flag is set: this flag will enable additional
3030 CRL functionality in future.
3032 This work was sponsored by Google.
3035 *) Add support for policy mappings extension.
3037 This work was sponsored by Google.
3040 *) Fixes to pathlength constraint, self issued certificate handling,
3041 policy processing to align with RFC3280 and PKITS tests.
3043 This work was sponsored by Google.
3046 *) Support for name constraints certificate extension. DN, email, DNS
3047 and URI types are currently supported.
3049 This work was sponsored by Google.
3052 *) To cater for systems that provide a pointer-based thread ID rather
3053 than numeric, deprecate the current numeric thread ID mechanism and
3054 replace it with a structure and associated callback type. This
3055 mechanism allows a numeric "hash" to be extracted from a thread ID in
3056 either case, and on platforms where pointers are larger than 'long',
3057 mixing is done to help ensure the numeric 'hash' is usable even if it
3058 can't be guaranteed unique. The default mechanism is to use "&errno"
3059 as a pointer-based thread ID to distinguish between threads.
3061 Applications that want to provide their own thread IDs should now use
3062 CRYPTO_THREADID_set_callback() to register a callback that will call
3063 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
3065 Note that ERR_remove_state() is now deprecated, because it is tied
3066 to the assumption that thread IDs are numeric. ERR_remove_state(0)
3067 to free the current thread's error state should be replaced by
3068 ERR_remove_thread_state(NULL).
3070 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
3071 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
3072 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
3073 application was previously providing a numeric thread callback that
3074 was inappropriate for distinguishing threads, then uniqueness might
3075 have been obtained with &errno that happened immediately in the
3076 intermediate development versions of OpenSSL; this is no longer the
3077 case, the numeric thread callback will now override the automatic use
3079 [Geoff Thorpe, with help from Bodo Moeller]
3081 *) Initial support for different CRL issuing certificates. This covers a
3082 simple case where the self issued certificates in the chain exist and
3083 the real CRL issuer is higher in the existing chain.
3085 This work was sponsored by Google.
3088 *) Removed effectively defunct crypto/store from the build.
3091 *) Revamp of STACK to provide stronger type-checking. Still to come:
3092 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
3093 ASN1_STRING, CONF_VALUE.
3096 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
3097 RAM on SSL connections. This option can save about 34k per idle SSL.
3100 *) Revamp of LHASH to provide stronger type-checking. Still to come:
3101 STACK, TXT_DB, bsearch, qsort.
3104 *) Initial support for Cryptographic Message Syntax (aka CMS) based
3105 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
3106 support for data, signedData, compressedData, digestedData and
3107 encryptedData, envelopedData types included. Scripts to check against
3108 RFC4134 examples draft and interop and consistency checks of many
3109 content types and variants.
3112 *) Add options to enc utility to support use of zlib compression BIO.
3115 *) Extend mk1mf to support importing of options and assembly language
3116 files from Configure script, currently only included in VC-WIN32.
3117 The assembly language rules can now optionally generate the source
3118 files from the associated perl scripts.
3121 *) Implement remaining functionality needed to support GOST ciphersuites.
3122 Interop testing has been performed using CryptoPro implementations.
3123 [Victor B. Wagner <vitus@cryptocom.ru>]
3125 *) s390x assembler pack.
3128 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
3132 *) Implement Opaque PRF Input TLS extension as specified in
3133 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
3134 official specification yet and no extension type assignment by
3135 IANA exists, this extension (for now) will have to be explicitly
3136 enabled when building OpenSSL by providing the extension number
3137 to use. For example, specify an option
3139 -DTLSEXT_TYPE_opaque_prf_input=0x9527
3141 to the "config" or "Configure" script to enable the extension,
3142 assuming extension number 0x9527 (which is a completely arbitrary
3143 and unofficial assignment based on the MD5 hash of the Internet
3144 Draft). Note that by doing so, you potentially lose
3145 interoperability with other TLS implementations since these might
3146 be using the same extension number for other purposes.
3148 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
3149 opaque PRF input value to use in the handshake. This will create
3150 an interal copy of the length-'len' string at 'src', and will
3151 return non-zero for success.
3153 To get more control and flexibility, provide a callback function
3156 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
3157 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
3161 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
3164 Callback function 'cb' will be called in handshakes, and is
3165 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
3166 Argument 'arg' is for application purposes (the value as given to
3167 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
3168 be provided to the callback function). The callback function
3169 has to return non-zero to report success: usually 1 to use opaque
3170 PRF input just if possible, or 2 to enforce use of the opaque PRF
3171 input. In the latter case, the library will abort the handshake
3172 if opaque PRF input is not successfully negotiated.
3174 Arguments 'peerinput' and 'len' given to the callback function
3175 will always be NULL and 0 in the case of a client. A server will
3176 see the client's opaque PRF input through these variables if
3177 available (NULL and 0 otherwise). Note that if the server
3178 provides an opaque PRF input, the length must be the same as the
3179 length of the client's opaque PRF input.
3181 Note that the callback function will only be called when creating
3182 a new session (session resumption can resume whatever was
3183 previously negotiated), and will not be called in SSL 2.0
3184 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
3185 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
3186 for applications that need to enforce opaque PRF input.
3190 *) Update ssl code to support digests other than SHA1+MD5 for handshake
3193 [Victor B. Wagner <vitus@cryptocom.ru>]
3195 *) Add RFC4507 support to OpenSSL. This includes the corrections in
3196 RFC4507bis. The encrypted ticket format is an encrypted encoded
3197 SSL_SESSION structure, that way new session features are automatically
3200 If a client application caches session in an SSL_SESSION structure
3201 support is transparent because tickets are now stored in the encoded
3204 The SSL_CTX structure automatically generates keys for ticket
3205 protection in servers so again support should be possible
3206 with no application modification.
3208 If a client or server wishes to disable RFC4507 support then the option
3209 SSL_OP_NO_TICKET can be set.
3211 Add a TLS extension debugging callback to allow the contents of any client
3212 or server extensions to be examined.
3214 This work was sponsored by Google.
3217 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
3218 OpenSSL should now compile cleanly on gcc 4.2
3219 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
3221 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
3222 support including streaming MAC support: this is required for GOST
3223 ciphersuite support.
3224 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
3226 *) Add option -stream to use PKCS#7 streaming in smime utility. New
3227 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
3228 to output in BER and PEM format.
3231 *) Experimental support for use of HMAC via EVP_PKEY interface. This
3232 allows HMAC to be handled via the EVP_DigestSign*() interface. The
3233 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
3234 ENGINE support for HMAC keys which are unextractable. New -mac and
3235 -macopt options to dgst utility.
3238 *) New option -sigopt to dgst utility. Update dgst to use
3239 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
3240 alternative signing parameters such as X9.31 or PSS in the dgst
3244 *) Change ssl_cipher_apply_rule(), the internal function that does
3245 the work each time a ciphersuite string requests enabling
3246 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
3247 removing ("!foo+bar") a class of ciphersuites: Now it maintains
3248 the order of disabled ciphersuites such that those ciphersuites
3249 that most recently went from enabled to disabled not only stay
3250 in order with respect to each other, but also have higher priority
3251 than other disabled ciphersuites the next time ciphersuites are
3254 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
3255 the same ciphersuites as with "HIGH" alone, but in a specific
3256 order where the PSK ciphersuites come first (since they are the
3257 most recently disabled ciphersuites when "HIGH" is parsed).
3259 Also, change ssl_create_cipher_list() (using this new
3260 funcionality) such that between otherwise identical
3261 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
3265 *) Change ssl_create_cipher_list() so that it automatically
3266 arranges the ciphersuites in reasonable order before starting
3267 to process the rule string. Thus, the definition for "DEFAULT"
3268 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
3269 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
3270 This makes it much easier to arrive at a reasonable default order
3271 in applications for which anonymous ciphers are OK (meaning
3272 that you can't actually use DEFAULT).
3273 [Bodo Moeller; suggested by Victor Duchovni]
3275 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
3276 processing) into multiple integers instead of setting
3277 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
3278 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
3279 (These masks as well as the individual bit definitions are hidden
3280 away into the non-exported interface ssl/ssl_locl.h, so this
3281 change to the definition of the SSL_CIPHER structure shouldn't
3282 affect applications.) This give us more bits for each of these
3283 categories, so there is no longer a need to coagulate AES128 and
3284 AES256 into a single algorithm bit, and to coagulate Camellia128
3285 and Camellia256 into a single algorithm bit, which has led to all
3288 Thus, among other things, the kludge introduced in 0.9.7m and
3289 0.9.8e for masking out AES256 independently of AES128 or masking
3290 out Camellia256 independently of AES256 is not needed here in 0.9.9.
3292 With the change, we also introduce new ciphersuite aliases that
3293 so far were missing: "AES128", "AES256", "CAMELLIA128", and
3297 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
3298 Use the leftmost N bytes of the signature input if the input is
3299 larger than the prime q (with N being the size in bytes of q).
3302 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
3303 it yet and it is largely untested.
3306 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
3309 *) Initial incomplete changes to avoid need for function casts in OpenSSL
3310 some compilers (gcc 4.2 and later) reject their use. Safestack is
3311 reimplemented. Update ASN1 to avoid use of legacy functions.
3314 *) Win32/64 targets are linked with Winsock2.
3317 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
3318 to external functions. This can be used to increase CRL handling
3319 efficiency especially when CRLs are very large by (for example) storing
3320 the CRL revoked certificates in a database.
3323 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
3324 new CRLs added to a directory can be used. New command line option
3325 -verify_return_error to s_client and s_server. This causes real errors
3326 to be returned by the verify callback instead of carrying on no matter
3327 what. This reflects the way a "real world" verify callback would behave.
3330 *) GOST engine, supporting several GOST algorithms and public key formats.
3331 Kindly donated by Cryptocom.
3334 *) Partial support for Issuing Distribution Point CRL extension. CRLs
3335 partitioned by DP are handled but no indirect CRL or reason partitioning
3336 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
3337 selected via a scoring technique which handles IDP and AKID in CRLs.
3340 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
3341 will ultimately be used for all verify operations: this will remove the
3342 X509_STORE dependency on certificate verification and allow alternative
3343 lookup methods. X509_STORE based implementations of these two callbacks.
3346 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
3347 Modify get_crl() to find a valid (unexpired) CRL if possible.
3350 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
3351 this would be called X509_CRL_cmp() but that name is already used by
3352 a function that just compares CRL issuer names. Cache several CRL
3353 extensions in X509_CRL structure and cache CRLDP in X509.
3356 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
3357 this maps equivalent X509_NAME structures into a consistent structure.
3358 Name comparison can then be performed rapidly using memcmp().
3361 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
3365 *) Allow digests to supply their own micalg string for S/MIME type using
3366 the ctrl EVP_MD_CTRL_MICALG.
3369 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
3370 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
3371 ctrl. It can then customise the structure before and/or after signing
3375 *) New function OBJ_add_sigid() to allow application defined signature OIDs
3376 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
3377 to free up any added signature OIDs.
3380 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
3381 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
3382 digest and cipher tables. New options added to openssl utility:
3383 list-message-digest-algorithms and list-cipher-algorithms.
3386 *) Change the array representation of binary polynomials: the list
3387 of degrees of non-zero coefficients is now terminated with -1.
3388 Previously it was terminated with 0, which was also part of the
3389 value; thus, the array representation was not applicable to
3390 polynomials where t^0 has coefficient zero. This change makes
3391 the array representation useful in a more general context.
3394 *) Various modifications and fixes to SSL/TLS cipher string
3395 handling. For ECC, the code now distinguishes between fixed ECDH
3396 with RSA certificates on the one hand and with ECDSA certificates
3397 on the other hand, since these are separate ciphersuites. The
3398 unused code for Fortezza ciphersuites has been removed.
3400 For consistency with EDH, ephemeral ECDH is now called "EECDH"
3401 (not "ECDHE"). For consistency with the code for DH
3402 certificates, use of ECDH certificates is now considered ECDH
3403 authentication, not RSA or ECDSA authentication (the latter is
3404 merely the CA's signing algorithm and not actively used in the
3407 The temporary ciphersuite alias "ECCdraft" is no longer
3408 available, and ECC ciphersuites are no longer excluded from "ALL"
3409 and "DEFAULT". The following aliases now exist for RFC 4492
3410 ciphersuites, most of these by analogy with the DH case:
3412 kECDHr - ECDH cert, signed with RSA
3413 kECDHe - ECDH cert, signed with ECDSA
3414 kECDH - ECDH cert (signed with either RSA or ECDSA)
3415 kEECDH - ephemeral ECDH
3416 ECDH - ECDH cert or ephemeral ECDH
3422 AECDH - anonymous ECDH
3423 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
3427 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
3428 Use correct micalg parameters depending on digest(s) in signed message.
3431 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
3432 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
3435 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
3436 an engine to register a method. Add ENGINE lookups for methods and
3437 functional reference processing.
3440 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
3441 EVP_{Sign,Verify}* which allow an application to customise the signature
3445 *) New -resign option to smime utility. This adds one or more signers
3446 to an existing PKCS#7 signedData structure. Also -md option to use an
3447 alternative message digest algorithm for signing.
3450 *) Tidy up PKCS#7 routines and add new functions to make it easier to
3451 create PKCS7 structures containing multiple signers. Update smime
3452 application to support multiple signers.
3455 *) New -macalg option to pkcs12 utility to allow setting of an alternative
3459 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
3460 Reorganize PBE internals to lookup from a static table using NIDs,
3461 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
3462 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
3463 PRF which will be automatically used with PBES2.
3466 *) Replace the algorithm specific calls to generate keys in "req" with the
3470 *) Update PKCS#7 enveloped data routines to use new API. This is now
3471 supported by any public key method supporting the encrypt operation. A
3472 ctrl is added to allow the public key algorithm to examine or modify
3473 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
3477 *) Add a ctrl to asn1 method to allow a public key algorithm to express
3478 a default digest type to use. In most cases this will be SHA1 but some
3479 algorithms (such as GOST) need to specify an alternative digest. The
3480 return value indicates how strong the preference is 1 means optional and
3481 2 is mandatory (that is it is the only supported type). Modify
3482 ASN1_item_sign() to accept a NULL digest argument to indicate it should
3483 use the default md. Update openssl utilities to use the default digest
3484 type for signing if it is not explicitly indicated.
3487 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
3488 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
3489 signing method from the key type. This effectively removes the link
3490 between digests and public key types.
3493 *) Add an OID cross reference table and utility functions. Its purpose is to
3494 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
3495 rsaEncryption. This will allow some of the algorithm specific hackery
3496 needed to use the correct OID to be removed.
3499 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
3500 structures for PKCS7_sign(). They are now set up by the relevant public
3504 *) Add provisional EC pkey method with support for ECDSA and ECDH.
3507 *) Add support for key derivation (agreement) in the API, DH method and
3511 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
3512 public and private key formats. As a side effect these add additional
3513 command line functionality not previously available: DSA signatures can be
3514 generated and verified using pkeyutl and DH key support and generation in
3519 [Oliver Tappe <zooey@hirschkaefer.de>]
3521 *) New make target "install_html_docs" installs HTML renditions of the
3523 [Oliver Tappe <zooey@hirschkaefer.de>]
3525 *) New utility "genpkey" this is analogous to "genrsa" etc except it can
3526 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
3527 support key and parameter generation and add initial key generation
3528 functionality for RSA.
3531 *) Add functions for main EVP_PKEY_method operations. The undocumented
3532 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
3533 EVP_PKEY_{encrypt,decrypt}_old.
3536 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
3537 key API, doesn't do much yet.
3540 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
3541 public key algorithms. New option to openssl utility:
3542 "list-public-key-algorithms" to print out info.
3545 *) Implement the Supported Elliptic Curves Extension for
3546 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
3549 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
3550 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
3553 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
3554 utilities such as rsa, dsa, dsaparam etc except they process any key
3558 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
3559 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
3560 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
3564 *) Initial support for pluggable public key ASN1.
3565 De-spaghettify the public key ASN1 handling. Move public and private
3566 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
3567 algorithm specific handling to a single module within the relevant
3568 algorithm directory. Add functions to allow (near) opaque processing
3569 of public and private key structures.
3572 *) Implement the Supported Point Formats Extension for
3573 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
3576 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
3577 for the psk identity [hint] and the psk callback functions to the
3578 SSL_SESSION, SSL and SSL_CTX structure.
3581 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
3585 SSL_CTX_use_psk_identity_hint
3586 SSL_get_psk_identity_hint
3587 SSL_get_psk_identity
3588 SSL_use_psk_identity_hint
3590 [Mika Kousa and Pasi Eronen of Nokia Corporation]
3592 *) Add RFC 3161 compliant time stamp request creation, response generation
3593 and response verification functionality.
3594 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
3596 *) Add initial support for TLS extensions, specifically for the server_name
3597 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
3598 have new members for a host name. The SSL data structure has an
3599 additional member SSL_CTX *initial_ctx so that new sessions can be
3600 stored in that context to allow for session resumption, even after the
3601 SSL has been switched to a new SSL_CTX in reaction to a client's
3602 server_name extension.
3604 New functions (subject to change):
3606 SSL_get_servername()
3607 SSL_get_servername_type()
3610 New CTRL codes and macros (subject to change):
3612 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
3613 - SSL_CTX_set_tlsext_servername_callback()
3614 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
3615 - SSL_CTX_set_tlsext_servername_arg()
3616 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
3618 openssl s_client has a new '-servername ...' option.
3620 openssl s_server has new options '-servername_host ...', '-cert2 ...',
3621 '-key2 ...', '-servername_fatal' (subject to change). This allows
3622 testing the HostName extension for a specific single host name ('-cert'
3623 and '-key' remain fallbacks for handshakes without HostName
3624 negotiation). If the unrecognized_name alert has to be sent, this by
3625 default is a warning; it becomes fatal with the '-servername_fatal'
3628 [Peter Sylvester, Remy Allais, Christophe Renou]
3630 *) Whirlpool hash implementation is added.
3633 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
3634 bn(64,32). Because of instruction set limitations it doesn't have
3635 any negative impact on performance. This was done mostly in order
3636 to make it possible to share assembler modules, such as bn_mul_mont
3637 implementations, between 32- and 64-bit builds without hassle.
3640 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
3641 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
3645 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
3646 dedicated Montgomery multiplication procedure, is introduced.
3647 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
3648 "64-bit" performance on certain 32-bit targets.
3651 *) New option SSL_OP_NO_COMP to disable use of compression selectively
3652 in SSL structures. New SSL ctrl to set maximum send fragment size.
3653 Save memory by seeting the I/O buffer sizes dynamically instead of
3654 using the maximum available value.
3657 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
3658 in addition to the text details.
3661 *) Very, very preliminary EXPERIMENTAL support for printing of general
3662 ASN1 structures. This currently produces rather ugly output and doesn't
3663 handle several customised structures at all.
3666 *) Integrated support for PVK file format and some related formats such
3667 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
3668 these in the 'rsa' and 'dsa' utilities.
3671 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
3674 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
3675 place for the (very old) "NETSCAPE" format certificates which are now
3676 handled using new ASN1 code equivalents.
3679 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
3680 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
3681 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
3684 *) Modify CRL distribution points extension code to print out previously
3685 unsupported fields. Enhance extension setting code to allow setting of
3689 *) Add print and set support for Issuing Distribution Point CRL extension.
3692 *) Change 'Configure' script to enable Camellia by default.
3695 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
3697 *) When rejecting SSL/TLS records due to an incorrect version number, never
3698 update s->server with a new major version number. As of
3699 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
3700 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
3701 the previous behavior could result in a read attempt at NULL when
3702 receiving specific incorrect SSL/TLS records once record payload
3703 protection is active. (CVE-2010-0740)
3704 [Bodo Moeller, Adam Langley <agl@chromium.org>]
3706 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
3707 could be crashed if the relevant tables were not present (e.g. chrooted).
3708 [Tomas Hoger <thoger@redhat.com>]
3710 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
3712 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
3713 [Martin Olsson, Neel Mehta]
3715 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
3716 accommodate for stack sorting, always a write lock!).
3719 *) On some versions of WIN32 Heap32Next is very slow. This can cause
3720 excessive delays in the RAND_poll(): over a minute. As a workaround
3721 include a time check in the inner Heap32Next loop too.
3724 *) The code that handled flushing of data in SSL/TLS originally used the
3725 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
3726 the problem outlined in PR#1949. The fix suggested there however can
3727 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
3728 of Apache). So instead simplify the code to flush unconditionally.
3729 This should be fine since flushing with no data to flush is a no op.
3732 *) Handle TLS versions 2.0 and later properly and correctly use the
3733 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
3734 off ancient servers have a habit of sticking around for a while...
3737 *) Modify compression code so it frees up structures without using the
3738 ex_data callbacks. This works around a problem where some applications
3739 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
3740 restarting) then use compression (e.g. SSL with compression) later.
3741 This results in significant per-connection memory leaks and
3742 has caused some security issues including CVE-2008-1678 and
3746 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
3747 change when encrypting or decrypting.
3750 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
3751 connect and renegotiate with servers which do not support RI.
3752 Until RI is more widely deployed this option is enabled by default.
3755 *) Add "missing" ssl ctrls to clear options and mode.
3758 *) If client attempts to renegotiate and doesn't support RI respond with
3759 a no_renegotiation alert as required by RFC5746. Some renegotiating
3760 TLS clients will continue a connection gracefully when they receive
3761 the alert. Unfortunately OpenSSL mishandled this alert and would hang
3762 waiting for a server hello which it will never receive. Now we treat a
3763 received no_renegotiation alert as a fatal error. This is because
3764 applications requesting a renegotiation might well expect it to succeed
3765 and would have no code in place to handle the server denying it so the
3766 only safe thing to do is to terminate the connection.
3769 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
3770 peer supports secure renegotiation and 0 otherwise. Print out peer
3771 renegotiation support in s_client/s_server.
3774 *) Replace the highly broken and deprecated SPKAC certification method with
3775 the updated NID creation version. This should correctly handle UTF8.
3778 *) Implement RFC5746. Re-enable renegotiation but require the extension
3779 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
3780 turns out to be a bad idea. It has been replaced by
3781 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
3782 SSL_CTX_set_options(). This is really not recommended unless you
3783 know what you are doing.
3784 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
3786 *) Fixes to stateless session resumption handling. Use initial_ctx when
3787 issuing and attempting to decrypt tickets in case it has changed during
3788 servername handling. Use a non-zero length session ID when attempting
3789 stateless session resumption: this makes it possible to determine if
3790 a resumption has occurred immediately after receiving server hello
3791 (several places in OpenSSL subtly assume this) instead of later in
3795 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
3796 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
3797 fixes for a few places where the return code is not checked
3799 [Julia Lawall <julia@diku.dk>]
3801 *) Add --strict-warnings option to Configure script to include devteam
3802 warnings in other configurations.
3805 *) Add support for --libdir option and LIBDIR variable in makefiles. This
3806 makes it possible to install openssl libraries in locations which
3807 have names other than "lib", for example "/usr/lib64" which some
3809 [Steve Henson, based on patch from Jeremy Utley]
3811 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
3812 X690 8.9.12 and can produce some misleading textual output of OIDs.
3813 [Steve Henson, reported by Dan Kaminsky]
3815 *) Delete MD2 from algorithm tables. This follows the recommendation in
3816 several standards that it is not used in new applications due to
3817 several cryptographic weaknesses. For binary compatibility reasons
3818 the MD2 API is still compiled in by default.
3821 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
3825 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
3826 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
3828 [Guenter <lists@gknw.net>]
3830 *) Fix the server certificate chain building code to use X509_verify_cert(),
3831 it used to have an ad-hoc builder which was unable to cope with anything
3832 other than a simple chain.
3833 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
3835 *) Don't check self signed certificate signatures in X509_verify_cert()
3836 by default (a flag can override this): it just wastes time without
3837 adding any security. As a useful side effect self signed root CAs
3838 with non-FIPS digests are now usable in FIPS mode.
3841 *) In dtls1_process_out_of_seq_message() the check if the current message
3842 is already buffered was missing. For every new message was memory
3843 allocated, allowing an attacker to perform an denial of service attack
3844 with sending out of seq handshake messages until there is no memory
3845 left. Additionally every future messege was buffered, even if the
3846 sequence number made no sense and would be part of another handshake.
3847 So only messages with sequence numbers less than 10 in advance will be
3848 buffered. (CVE-2009-1378)
3849 [Robin Seggelmann, discovered by Daniel Mentz]
3851 *) Records are buffered if they arrive with a future epoch to be
3852 processed after finishing the corresponding handshake. There is
3853 currently no limitation to this buffer allowing an attacker to perform
3854 a DOS attack with sending records with future epochs until there is no
3855 memory left. This patch adds the pqueue_size() function to determine
3856 the size of a buffer and limits the record buffer to 100 entries.
3858 [Robin Seggelmann, discovered by Daniel Mentz]
3860 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
3861 parent structure is freed. (CVE-2009-1379)
3864 *) Handle non-blocking I/O properly in SSL_shutdown() call.
3865 [Darryl Miles <darryl-mailinglists@netbauds.net>]
3868 [Ilya O. <vrghost@gmail.com>]
3870 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
3872 *) Disable renegotiation completely - this fixes a severe security
3873 problem (CVE-2009-3555) at the cost of breaking all
3874 renegotiation. Renegotiation can be re-enabled by setting
3875 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
3876 run-time. This is really not recommended unless you know what
3880 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
3882 *) Don't set val to NULL when freeing up structures, it is freed up by
3883 underlying code. If sizeof(void *) > sizeof(long) this can result in
3884 zeroing past the valid field. (CVE-2009-0789)
3885 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
3887 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
3888 checked correctly. This would allow some invalid signed attributes to
3889 appear to verify correctly. (CVE-2009-0591)
3890 [Ivan Nestlerode <inestlerode@us.ibm.com>]
3892 *) Reject UniversalString and BMPString types with invalid lengths. This
3893 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
3894 a legal length. (CVE-2009-0590)
3897 *) Set S/MIME signing as the default purpose rather than setting it
3898 unconditionally. This allows applications to override it at the store
3902 *) Permit restricted recursion of ASN1 strings. This is needed in practice
3903 to handle some structures.
3906 *) Improve efficiency of mem_gets: don't search whole buffer each time
3908 [Jeremy Shapiro <jnshapir@us.ibm.com>]
3910 *) New -hex option for openssl rand.
3913 *) Print out UTF8String and NumericString when parsing ASN1.
3916 *) Support NumericString type for name components.
3919 *) Allow CC in the environment to override the automatically chosen
3920 compiler. Note that nothing is done to ensure flags work with the
3924 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
3926 *) Properly check EVP_VerifyFinal() and similar return values
3928 [Ben Laurie, Bodo Moeller, Google Security Team]
3930 *) Enable TLS extensions by default.
3933 *) Allow the CHIL engine to be loaded, whether the application is
3934 multithreaded or not. (This does not release the developer from the
3935 obligation to set up the dynamic locking callbacks.)
3936 [Sander Temme <sander@temme.net>]
3938 *) Use correct exit code if there is an error in dgst command.
3939 [Steve Henson; problem pointed out by Roland Dirlewanger]
3941 *) Tweak Configure so that you need to say "experimental-jpake" to enable
3942 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
3945 *) Add experimental JPAKE support, including demo authentication in
3946 s_client and s_server.
3949 *) Set the comparison function in v3_addr_canonize().
3950 [Rob Austein <sra@hactrn.net>]
3952 *) Add support for XMPP STARTTLS in s_client.
3953 [Philip Paeps <philip@freebsd.org>]
3955 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
3956 to ensure that even with this option, only ciphersuites in the
3957 server's preference list will be accepted. (Note that the option
3958 applies only when resuming a session, so the earlier behavior was
3959 just about the algorithm choice for symmetric cryptography.)
3962 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
3964 *) Fix NULL pointer dereference if a DTLS server received
3965 ChangeCipherSpec as first record (CVE-2009-1386).
3968 *) Fix a state transition in s3_srvr.c and d1_srvr.c
3969 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
3972 *) The fix in 0.9.8c that supposedly got rid of unsafe
3973 double-checked locking was incomplete for RSA blinding,
3974 addressing just one layer of what turns out to have been
3975 doubly unsafe triple-checked locking.
3977 So now fix this for real by retiring the MONT_HELPER macro
3978 in crypto/rsa/rsa_eay.c.
3980 [Bodo Moeller; problem pointed out by Marius Schilder]
3982 *) Various precautionary measures:
3984 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
3986 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
3987 (NB: This would require knowledge of the secret session ticket key
3988 to exploit, in which case you'd be SOL either way.)
3990 - Change bn_nist.c so that it will properly handle input BIGNUMs
3991 outside the expected range.
3993 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
3996 [Neel Mehta, Bodo Moeller]
3998 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
3999 the load fails. Useful for distros.
4000 [Ben Laurie and the FreeBSD team]
4002 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
4005 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
4008 *) Expand ENGINE to support engine supplied SSL client certificate functions.
4010 This work was sponsored by Logica.
4013 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
4014 keystores. Support for SSL/TLS client authentication too.
4015 Not compiled unless enable-capieng specified to Configure.
4017 This work was sponsored by Logica.
4020 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
4021 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
4022 attribute creation routines such as certifcate requests and PKCS#12
4026 Changes between 0.9.8g and 0.9.8h [28 May 2008]
4028 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
4029 handshake which could lead to a cilent crash as found using the
4030 Codenomicon TLS test suite (CVE-2008-1672)
4031 [Steve Henson, Mark Cox]
4033 *) Fix double free in TLS server name extensions which could lead to
4034 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
4037 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
4039 Clear the error queue to ensure that error entries left from
4040 older function calls do not interfere with the correct operation.
4041 [Lutz Jaenicke, Erik de Castro Lopo]
4043 *) Remove root CA certificates of commercial CAs:
4045 The OpenSSL project does not recommend any specific CA and does not
4046 have any policy with respect to including or excluding any CA.
4047 Therefore it does not make any sense to ship an arbitrary selection
4048 of root CA certificates with the OpenSSL software.
4051 *) RSA OAEP patches to fix two separate invalid memory reads.
4052 The first one involves inputs when 'lzero' is greater than
4053 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
4054 before the beginning of from). The second one involves inputs where
4055 the 'db' section contains nothing but zeroes (there is a one-byte
4056 invalid read after the end of 'db').
4057 [Ivan Nestlerode <inestlerode@us.ibm.com>]
4059 *) Partial backport from 0.9.9-dev:
4061 Introduce bn_mul_mont (dedicated Montgomery multiplication
4062 procedure) as a candidate for BIGNUM assembler implementation.
4063 While 0.9.9-dev uses assembler for various architectures, only
4064 x86_64 is available by default here in the 0.9.8 branch, and
4065 32-bit x86 is available through a compile-time setting.
4067 To try the 32-bit x86 assembler implementation, use Configure
4068 option "enable-montasm" (which exists only for this backport).
4070 As "enable-montasm" for 32-bit x86 disclaims code stability
4071 anyway, in this constellation we activate additional code
4072 backported from 0.9.9-dev for further performance improvements,
4073 namely BN_from_montgomery_word. (To enable this otherwise,
4074 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
4076 [Andy Polyakov (backport partially by Bodo Moeller)]
4078 *) Add TLS session ticket callback. This allows an application to set
4079 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
4080 values. This is useful for key rollover for example where several key
4081 sets may exist with different names.
4084 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
4085 This was broken until now in 0.9.8 releases, such that the only way
4086 a registered ENGINE could be used (assuming it initialises
4087 successfully on the host) was to explicitly set it as the default
4088 for the relevant algorithms. This is in contradiction with 0.9.7
4089 behaviour and the documentation. With this fix, when an ENGINE is
4090 registered into a given algorithm's table of implementations, the
4091 'uptodate' flag is reset so that auto-discovery will be used next
4092 time a new context for that algorithm attempts to select an
4094 [Ian Lister (tweaked by Geoff Thorpe)]
4096 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
4097 implemention in the following ways:
4099 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
4102 Lack of BER streaming support means one pass streaming processing is
4103 only supported if data is detached: setting the streaming flag is
4104 ignored for embedded content.
4106 CMS support is disabled by default and must be explicitly enabled
4107 with the enable-cms configuration option.
4110 *) Update the GMP engine glue to do direct copies between BIGNUM and
4111 mpz_t when openssl and GMP use the same limb size. Otherwise the
4112 existing "conversion via a text string export" trick is still used.
4113 [Paul Sheer <paulsheer@gmail.com>]
4115 *) Zlib compression BIO. This is a filter BIO which compressed and
4116 uncompresses any data passed through it.
4119 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
4120 RFC3394 compatible AES key wrapping.
4123 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
4124 sets string data without copying. X509_ALGOR_set0() and
4125 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
4126 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
4127 from an X509_ATTRIBUTE structure optionally checking it occurs only
4128 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
4132 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
4133 to get the expected BN_FLG_CONSTTIME behavior.
4134 [Bodo Moeller (Google)]
4138 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
4139 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
4140 - added some more tests to do_tests.pl
4141 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
4142 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
4143 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
4144 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
4145 - various changes to netware.pl to enable gcc-cross builds on Win32
4147 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
4148 - various changes to fix missing prototype warnings
4149 - fixed x86nasm.pl to create correct asm files for NASM COFF output
4150 - added AES, WHIRLPOOL and CPUID assembler code to build files
4151 - added missing AES assembler make rules to mk1mf.pl
4152 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
4153 [Guenter Knauf <eflash@gmx.net>]
4155 *) Implement certificate status request TLS extension defined in RFC3546.
4156 A client can set the appropriate parameters and receive the encoded
4157 OCSP response via a callback. A server can query the supplied parameters
4158 and set the encoded OCSP response in the callback. Add simplified examples
4159 to s_client and s_server.
4162 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
4164 *) Fix various bugs:
4165 + Binary incompatibility of ssl_ctx_st structure
4166 + DTLS interoperation with non-compliant servers
4167 + Don't call get_session_cb() without proposed session
4168 + Fix ia64 assembler code
4169 [Andy Polyakov, Steve Henson]
4171 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
4173 *) DTLS Handshake overhaul. There were longstanding issues with
4174 OpenSSL DTLS implementation, which were making it impossible for
4175 RFC 4347 compliant client to communicate with OpenSSL server.
4176 Unfortunately just fixing these incompatibilities would "cut off"
4177 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
4178 server keeps tolerating non RFC compliant syntax. The opposite is
4179 not true, 0.9.8f client can not communicate with earlier server.
4180 This update even addresses CVE-2007-4995.
4183 *) Changes to avoid need for function casts in OpenSSL: some compilers
4184 (gcc 4.2 and later) reject their use.
4185 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
4188 *) Add RFC4507 support to OpenSSL. This includes the corrections in
4189 RFC4507bis. The encrypted ticket format is an encrypted encoded
4190 SSL_SESSION structure, that way new session features are automatically
4193 If a client application caches session in an SSL_SESSION structure
4194 support is transparent because tickets are now stored in the encoded
4197 The SSL_CTX structure automatically generates keys for ticket
4198 protection in servers so again support should be possible
4199 with no application modification.
4201 If a client or server wishes to disable RFC4507 support then the option
4202 SSL_OP_NO_TICKET can be set.
4204 Add a TLS extension debugging callback to allow the contents of any client
4205 or server extensions to be examined.
4207 This work was sponsored by Google.
4210 *) Add initial support for TLS extensions, specifically for the server_name
4211 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
4212 have new members for a host name. The SSL data structure has an
4213 additional member SSL_CTX *initial_ctx so that new sessions can be
4214 stored in that context to allow for session resumption, even after the
4215 SSL has been switched to a new SSL_CTX in reaction to a client's
4216 server_name extension.
4218 New functions (subject to change):
4220 SSL_get_servername()
4221 SSL_get_servername_type()
4224 New CTRL codes and macros (subject to change):
4226 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
4227 - SSL_CTX_set_tlsext_servername_callback()
4228 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
4229 - SSL_CTX_set_tlsext_servername_arg()
4230 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
4232 openssl s_client has a new '-servername ...' option.
4234 openssl s_server has new options '-servername_host ...', '-cert2 ...',
4235 '-key2 ...', '-servername_fatal' (subject to change). This allows
4236 testing the HostName extension for a specific single host name ('-cert'
4237 and '-key' remain fallbacks for handshakes without HostName
4238 negotiation). If the unrecognized_name alert has to be sent, this by
4239 default is a warning; it becomes fatal with the '-servername_fatal'
4242 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
4244 *) Add AES and SSE2 assembly language support to VC++ build.
4247 *) Mitigate attack on final subtraction in Montgomery reduction.
4250 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
4251 (which previously caused an internal error).
4254 *) Squeeze another 10% out of IGE mode when in != out.
4257 *) AES IGE mode speedup.
4258 [Dean Gaudet (Google)]
4260 *) Add the Korean symmetric 128-bit cipher SEED (see
4261 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
4262 add SEED ciphersuites from RFC 4162:
4264 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
4265 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
4266 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
4267 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
4269 To minimize changes between patchlevels in the OpenSSL 0.9.8
4270 series, SEED remains excluded from compilation unless OpenSSL
4271 is configured with 'enable-seed'.
4272 [KISA, Bodo Moeller]
4274 *) Mitigate branch prediction attacks, which can be practical if a
4275 single processor is shared, allowing a spy process to extract
4276 information. For detailed background information, see
4277 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
4278 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
4279 and Necessary Software Countermeasures"). The core of the change
4280 are new versions BN_div_no_branch() and
4281 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
4282 respectively, which are slower, but avoid the security-relevant
4283 conditional branches. These are automatically called by BN_div()
4284 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
4285 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
4286 remove a conditional branch.
4288 BN_FLG_CONSTTIME is the new name for the previous
4289 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
4290 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
4291 in the exponent causes BN_mod_exp_mont() to use the alternative
4292 implementation in BN_mod_exp_mont_consttime().) The old name
4293 remains as a deprecated alias.
4295 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
4296 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
4297 constant-time implementations for more than just exponentiation.
4298 Here too the old name is kept as a deprecated alias.
4300 BN_BLINDING_new() will now use BN_dup() for the modulus so that
4301 the BN_BLINDING structure gets an independent copy of the
4302 modulus. This means that the previous "BIGNUM *m" argument to
4303 BN_BLINDING_new() and to BN_BLINDING_create_param() now
4304 essentially becomes "const BIGNUM *m", although we can't actually
4305 change this in the header file before 0.9.9. It allows
4306 RSA_setup_blinding() to use BN_with_flags() on the modulus to
4307 enable BN_FLG_CONSTTIME.
4309 [Matthew D Wood (Intel Corp)]
4311 *) In the SSL/TLS server implementation, be strict about session ID
4312 context matching (which matters if an application uses a single
4313 external cache for different purposes). Previously,
4314 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
4315 set. This did ensure strict client verification, but meant that,
4316 with applications using a single external cache for quite
4317 different requirements, clients could circumvent ciphersuite
4318 restrictions for a given session ID context by starting a session
4319 in a different context.
4322 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
4323 a ciphersuite string such as "DEFAULT:RSA" cannot enable
4324 authentication-only ciphersuites.
4327 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
4328 not complete and could lead to a possible single byte overflow
4329 (CVE-2007-5135) [Ben Laurie]
4331 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
4333 *) Since AES128 and AES256 (and similarly Camellia128 and
4334 Camellia256) share a single mask bit in the logic of
4335 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
4336 kludge to work properly if AES128 is available and AES256 isn't
4337 (or if Camellia128 is available and Camellia256 isn't).
4340 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
4341 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
4342 When a point or a seed is encoded in a BIT STRING, we need to
4343 prevent the removal of trailing zero bits to get the proper DER
4344 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
4345 of a NamedBitList, for which trailing 0 bits need to be removed.)
4348 *) Have SSL/TLS server implementation tolerate "mismatched" record
4349 protocol version while receiving ClientHello even if the
4350 ClientHello is fragmented. (The server can't insist on the
4351 particular protocol version it has chosen before the ServerHello
4352 message has informed the client about his choice.)
4355 *) Add RFC 3779 support.
4356 [Rob Austein for ARIN, Ben Laurie]
4358 *) Load error codes if they are not already present instead of using a
4359 static variable. This allows them to be cleanly unloaded and reloaded.
4360 Improve header file function name parsing.
4363 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
4364 or CAPABILITY handshake as required by RFCs.
4367 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
4369 *) Introduce limits to prevent malicious keys being able to
4370 cause a denial of service. (CVE-2006-2940)
4371 [Steve Henson, Bodo Moeller]
4373 *) Fix ASN.1 parsing of certain invalid structures that can result
4374 in a denial of service. (CVE-2006-2937) [Steve Henson]
4376 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
4377 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
4379 *) Fix SSL client code which could crash if connecting to a
4380 malicious SSLv2 server. (CVE-2006-4343)
4381 [Tavis Ormandy and Will Drewry, Google Security Team]
4383 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
4384 match only those. Before that, "AES256-SHA" would be interpreted
4385 as a pattern and match "AES128-SHA" too (since AES128-SHA got
4386 the same strength classification in 0.9.7h) as we currently only
4387 have a single AES bit in the ciphersuite description bitmap.
4388 That change, however, also applied to ciphersuite strings such as
4389 "RC4-MD5" that intentionally matched multiple ciphersuites --
4390 namely, SSL 2.0 ciphersuites in addition to the more common ones
4391 from SSL 3.0/TLS 1.0.
4393 So we change the selection algorithm again: Naming an explicit
4394 ciphersuite selects this one ciphersuite, and any other similar
4395 ciphersuite (same bitmap) from *other* protocol versions.
4396 Thus, "RC4-MD5" again will properly select both the SSL 2.0
4397 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
4399 Since SSL 2.0 does not have any ciphersuites for which the
4400 128/256 bit distinction would be relevant, this works for now.
4401 The proper fix will be to use different bits for AES128 and
4402 AES256, which would have avoided the problems from the beginning;
4403 however, bits are scarce, so we can only do this in a new release
4404 (not just a patchlevel) when we can change the SSL_CIPHER
4405 definition to split the single 'unsigned long mask' bitmap into
4406 multiple values to extend the available space.
4410 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
4412 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
4413 (CVE-2006-4339) [Ben Laurie and Google Security Team]
4415 *) Add AES IGE and biIGE modes.
4418 *) Change the Unix randomness entropy gathering to use poll() when
4419 possible instead of select(), since the latter has some
4420 undesirable limitations.
4421 [Darryl Miles via Richard Levitte and Bodo Moeller]
4423 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
4424 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
4425 cannot be implicitly activated as part of, e.g., the "AES" alias.
4426 However, please upgrade to OpenSSL 0.9.9[-dev] for
4427 non-experimental use of the ECC ciphersuites to get TLS extension
4428 support, which is required for curve and point format negotiation
4429 to avoid potential handshake problems.
4432 *) Disable rogue ciphersuites:
4434 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
4435 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
4436 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
4438 The latter two were purportedly from
4439 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
4442 Also deactivate the remaining ciphersuites from
4443 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
4444 unofficial, and the ID has long expired.
4447 *) Fix RSA blinding Heisenbug (problems sometimes occurred on
4448 dual-core machines) and other potential thread-safety issues.
4451 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
4452 versions), which is now available for royalty-free use
4453 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
4454 Also, add Camellia TLS ciphersuites from RFC 4132.
4456 To minimize changes between patchlevels in the OpenSSL 0.9.8
4457 series, Camellia remains excluded from compilation unless OpenSSL
4458 is configured with 'enable-camellia'.
4461 *) Disable the padding bug check when compression is in use. The padding
4462 bug check assumes the first packet is of even length, this is not
4463 necessarily true if compresssion is enabled and can result in false
4464 positives causing handshake failure. The actual bug test is ancient
4465 code so it is hoped that implementations will either have fixed it by
4466 now or any which still have the bug do not support compression.
4469 Changes between 0.9.8a and 0.9.8b [04 May 2006]
4471 *) When applying a cipher rule check to see if string match is an explicit
4472 cipher suite and only match that one cipher suite if it is.
4475 *) Link in manifests for VC++ if needed.
4476 [Austin Ziegler <halostatue@gmail.com>]
4478 *) Update support for ECC-based TLS ciphersuites according to
4479 draft-ietf-tls-ecc-12.txt with proposed changes (but without
4480 TLS extensions, which are supported starting with the 0.9.9
4481 branch, not in the OpenSSL 0.9.8 branch).
4484 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
4485 opaque EVP_CIPHER_CTX handling.
4488 *) Fixes and enhancements to zlib compression code. We now only use
4489 "zlib1.dll" and use the default __cdecl calling convention on Win32
4490 to conform with the standards mentioned here:
4491 http://www.zlib.net/DLL_FAQ.txt
4492 Static zlib linking now works on Windows and the new --with-zlib-include
4493 --with-zlib-lib options to Configure can be used to supply the location
4494 of the headers and library. Gracefully handle case where zlib library
4498 *) Several fixes and enhancements to the OID generation code. The old code
4499 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
4500 handle numbers larger than ULONG_MAX, truncated printing and had a
4501 non standard OBJ_obj2txt() behaviour.
4504 *) Add support for building of engines under engine/ as shared libraries
4505 under VC++ build system.
4508 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
4509 Hopefully, we will not see any false combination of paths any more.
4512 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
4514 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
4515 (part of SSL_OP_ALL). This option used to disable the
4516 countermeasure against man-in-the-middle protocol-version
4517 rollback in the SSL 2.0 server implementation, which is a bad
4518 idea. (CVE-2005-2969)
4520 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
4521 for Information Security, National Institute of Advanced Industrial
4522 Science and Technology [AIST], Japan)]
4524 *) Add two function to clear and return the verify parameter flags.
4527 *) Keep cipherlists sorted in the source instead of sorting them at
4528 runtime, thus removing the need for a lock.
4531 *) Avoid some small subgroup attacks in Diffie-Hellman.
4532 [Nick Mathewson and Ben Laurie]
4534 *) Add functions for well-known primes.
4537 *) Extended Windows CE support.
4538 [Satoshi Nakamura and Andy Polyakov]
4540 *) Initialize SSL_METHOD structures at compile time instead of during
4541 runtime, thus removing the need for a lock.
4544 *) Make PKCS7_decrypt() work even if no certificate is supplied by
4545 attempting to decrypt each encrypted key in turn. Add support to
4549 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
4551 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
4554 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
4557 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
4558 key into the same file any more.
4561 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
4564 *) Add -utf8 command line and config file option to 'ca'.
4565 [Stefan <stf@udoma.org]
4567 *) Removed the macro des_crypt(), as it seems to conflict with some
4568 libraries. Use DES_crypt().
4571 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
4572 involves renaming the source and generated shared-libs for
4573 both. The engines will accept the corrected or legacy ids
4574 ('ncipher' and '4758_cca' respectively) when binding. NB,
4575 this only applies when building 'shared'.
4576 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
4578 *) Add attribute functions to EVP_PKEY structure. Modify
4579 PKCS12_create() to recognize a CSP name attribute and
4580 use it. Make -CSP option work again in pkcs12 utility.
4583 *) Add new functionality to the bn blinding code:
4584 - automatic re-creation of the BN_BLINDING parameters after
4585 a fixed number of uses (currently 32)
4586 - add new function for parameter creation
4587 - introduce flags to control the update behaviour of the
4588 BN_BLINDING parameters
4589 - hide BN_BLINDING structure
4590 Add a second BN_BLINDING slot to the RSA structure to improve
4591 performance when a single RSA object is shared among several
4595 *) Add support for DTLS.
4596 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
4598 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
4599 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
4602 *) Remove buggy and incomplete DH cert support from
4603 ssl/ssl_rsa.c and ssl/s3_both.c
4606 *) Use SHA-1 instead of MD5 as the default digest algorithm for
4607 the apps/openssl applications.
4610 *) Compile clean with "-Wall -Wmissing-prototypes
4611 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
4612 DEBUG_SAFESTACK must also be set.
4615 *) Change ./Configure so that certain algorithms can be disabled by default.
4616 The new counterpiece to "no-xxx" is "enable-xxx".
4618 The patented RC5 and MDC2 algorithms will now be disabled unless
4619 "enable-rc5" and "enable-mdc2", respectively, are specified.
4621 (IDEA remains enabled despite being patented. This is because IDEA
4622 is frequently required for interoperability, and there is no license
4623 fee for non-commercial use. As before, "no-idea" can be used to
4624 avoid this algorithm.)
4628 *) Add processing of proxy certificates (see RFC 3820). This work was
4629 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
4630 EGEE (Enabling Grids for E-science in Europe).
4633 *) RC4 performance overhaul on modern architectures/implementations, such
4634 as Intel P4, IA-64 and AMD64.
4637 *) New utility extract-section.pl. This can be used specify an alternative
4638 section number in a pod file instead of having to treat each file as
4639 a separate case in Makefile. This can be done by adding two lines to the
4642 =for comment openssl_section:XXX
4644 The blank line is mandatory.
4648 *) New arguments -certform, -keyform and -pass for s_client and s_server
4649 to allow alternative format key and certificate files and passphrase
4653 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
4654 update associated structures and add various utility functions.
4656 Add new policy related verify parameters, include policy checking in
4657 standard verify code. Enhance 'smime' application with extra parameters
4658 to support policy checking and print out.
4661 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
4662 Nehemiah processors. These extensions support AES encryption in hardware
4663 as well as RNG (though RNG support is currently disabled).
4664 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
4666 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
4669 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
4670 [Andy Polyakov and a number of other people]
4672 *) Improved PowerPC platform support. Most notably BIGNUM assembler
4673 implementation contributed by IBM.
4674 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
4676 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
4677 exponent rather than 'unsigned long'. There is a corresponding change to
4678 the new 'rsa_keygen' element of the RSA_METHOD structure.
4679 [Jelte Jansen, Geoff Thorpe]
4681 *) Functionality for creating the initial serial number file is now
4682 moved from CA.pl to the 'ca' utility with a new option -create_serial.
4684 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
4685 number file to 1, which is bound to cause problems. To avoid
4686 the problems while respecting compatibility between different 0.9.7
4687 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
4688 CA.pl for serial number initialization. With the new release 0.9.8,
4689 we can fix the problem directly in the 'ca' utility.)
4692 *) Reduced header interdepencies by declaring more opaque objects in
4693 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
4694 give fewer recursive includes, which could break lazy source code - so
4695 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
4696 developers should define this symbol when building and using openssl to
4697 ensure they track the recommended behaviour, interfaces, [etc], but
4698 backwards-compatible behaviour prevails when this isn't defined.
4701 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
4704 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
4705 This will generate a random key of the appropriate length based on the
4706 cipher context. The EVP_CIPHER can provide its own random key generation
4707 routine to support keys of a specific form. This is used in the des and
4708 3des routines to generate a key of the correct parity. Update S/MIME
4709 code to use new functions and hence generate correct parity DES keys.
4710 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
4711 valid (weak or incorrect parity).
4714 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
4715 as looking them up. This is useful when the verified structure may contain
4716 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
4717 present unless the new PKCS7_NO_CRL flag is asserted.
4720 *) Extend ASN1 oid configuration module. It now additionally accepts the
4723 shortName = some long name, 1.2.3.4
4726 *) Reimplemented the BN_CTX implementation. There is now no more static
4727 limitation on the number of variables it can handle nor the depth of the
4728 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
4729 information can now expand as required, and rather than having a single
4730 static array of bignums, BN_CTX now uses a linked-list of such arrays
4731 allowing it to expand on demand whilst maintaining the usefulness of
4732 BN_CTX's "bundling".
4735 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
4736 to allow all RSA operations to function using a single BN_CTX.
4739 *) Preliminary support for certificate policy evaluation and checking. This
4740 is initially intended to pass the tests outlined in "Conformance Testing
4741 of Relying Party Client Certificate Path Processing Logic" v1.07.
4744 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
4745 remained unused and not that useful. A variety of other little bignum
4746 tweaks and fixes have also been made continuing on from the audit (see
4750 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
4751 associated ASN1, EVP and SSL functions and old ASN1 macros.
4754 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
4755 and this should never fail. So the return value from the use of
4756 BN_set_word() (which can fail due to needless expansion) is now deprecated;
4757 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
4760 *) BN_CTX_get() should return zero-valued bignums, providing the same
4761 initialised value as BN_new().
4762 [Geoff Thorpe, suggested by Ulf Möller]
4764 *) Support for inhibitAnyPolicy certificate extension.
4767 *) An audit of the BIGNUM code is underway, for which debugging code is
4768 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
4769 is considered valid when processing BIGNUMs, and causes execution to
4770 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
4771 further steps are taken to deliberately pollute unused data in BIGNUM
4772 structures to try and expose faulty code further on. For now, openssl will
4773 (in its default mode of operation) continue to tolerate the inconsistent
4774 forms that it has tolerated in the past, but authors and packagers should
4775 consider trying openssl and their own applications when compiled with
4776 these debugging symbols defined. It will help highlight potential bugs in
4777 their own code, and will improve the test coverage for OpenSSL itself. At
4778 some point, these tighter rules will become openssl's default to improve
4779 maintainability, though the assert()s and other overheads will remain only
4780 in debugging configurations. See bn.h for more details.
4781 [Geoff Thorpe, Nils Larsch, Ulf Möller]
4783 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
4784 that can only be obtained through BN_CTX_new() (which implicitly
4785 initialises it). The presence of this function only made it possible
4786 to overwrite an existing structure (and cause memory leaks).
4789 *) Because of the callback-based approach for implementing LHASH as a
4790 template type, lh_insert() adds opaque objects to hash-tables and
4791 lh_doall() or lh_doall_arg() are typically used with a destructor callback
4792 to clean up those corresponding objects before destroying the hash table
4793 (and losing the object pointers). So some over-zealous constifications in
4794 LHASH have been relaxed so that lh_insert() does not take (nor store) the
4795 objects as "const" and the lh_doall[_arg] callback wrappers are not
4796 prototyped to have "const" restrictions on the object pointers they are
4797 given (and so aren't required to cast them away any more).
4800 *) The tmdiff.h API was so ugly and minimal that our own timing utility
4801 (speed) prefers to use its own implementation. The two implementations
4802 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
4803 its object type properly exposed (MS_TM) instead of casting to/from "char
4804 *". This may still change yet if someone realises MS_TM and "ms_time_***"
4805 aren't necessarily the greatest nomenclatures - but this is what was used
4806 internally to the implementation so I've used that for now.
4809 *) Ensure that deprecated functions do not get compiled when
4810 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
4811 the self-tests were still using deprecated key-generation functions so
4812 these have been updated also.
4815 *) Reorganise PKCS#7 code to separate the digest location functionality
4816 into PKCS7_find_digest(), digest addition into PKCS7_bio_add_digest().
4817 New function PKCS7_set_digest() to set the digest type for PKCS#7
4818 digestedData type. Add additional code to correctly generate the
4819 digestedData type and add support for this type in PKCS7 initialization
4823 *) New function PKCS7_set0_type_other() this initializes a PKCS7
4824 structure of type "other".
4827 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
4828 sure the loop does correctly stop and breaking ("division by zero")
4829 modulus operations are not performed. The (pre-generated) prime
4830 table crypto/bn/bn_prime.h was already correct, but it could not be
4831 re-generated on some platforms because of the "division by zero"
4832 situation in the script.
4833 [Ralf S. Engelschall]
4835 *) Update support for ECC-based TLS ciphersuites according to
4836 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
4837 SHA-1 now is only used for "small" curves (where the
4838 representation of a field element takes up to 24 bytes); for
4839 larger curves, the field element resulting from ECDH is directly
4840 used as premaster secret.
4841 [Douglas Stebila (Sun Microsystems Laboratories)]
4843 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
4844 curve secp160r1 to the tests.
4845 [Douglas Stebila (Sun Microsystems Laboratories)]
4847 *) Add the possibility to load symbols globally with DSO.
4848 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
4850 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
4851 control of the error stack.
4854 *) Add support for STORE in ENGINE.
4857 *) Add the STORE type. The intention is to provide a common interface
4858 to certificate and key stores, be they simple file-based stores, or
4859 HSM-type store, or LDAP stores, or...
4860 NOTE: The code is currently UNTESTED and isn't really used anywhere.
4863 *) Add a generic structure called OPENSSL_ITEM. This can be used to
4864 pass a list of arguments to any function as well as provide a way
4865 for a function to pass data back to the caller.
4868 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
4869 works like BUF_strdup() but can be used to duplicate a portion of
4870 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
4874 *) Add the function sk_find_ex() which works like sk_find(), but will
4875 return an index to an element even if an exact match couldn't be
4876 found. The index is guaranteed to point at the element where the
4877 searched-for key would be inserted to preserve sorting order.
4880 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
4881 takes an extra flags argument for optional functionality. Currently,
4882 the following flags are defined:
4884 OBJ_BSEARCH_VALUE_ON_NOMATCH
4885 This one gets OBJ_bsearch_ex() to return a pointer to the first
4886 element where the comparing function returns a negative or zero
4889 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
4890 This one gets OBJ_bsearch_ex() to return a pointer to the first
4891 element where the comparing function returns zero. This is useful
4892 if there are more than one element where the comparing function
4896 *) Make it possible to create self-signed certificates with 'openssl ca'
4897 in such a way that the self-signed certificate becomes part of the
4898 CA database and uses the same mechanisms for serial number generation
4899 as all other certificate signing. The new flag '-selfsign' enables
4900 this functionality. Adapt CA.sh and CA.pl.in.
4903 *) Add functionality to check the public key of a certificate request
4904 against a given private. This is useful to check that a certificate
4905 request can be signed by that key (self-signing).
4908 *) Make it possible to have multiple active certificates with the same
4909 subject in the CA index file. This is done only if the keyword
4910 'unique_subject' is set to 'no' in the main CA section (default
4911 if 'CA_default') of the configuration file. The value is saved
4912 with the database itself in a separate index attribute file,
4913 named like the index file with '.attr' appended to the name.
4916 *) Generate muti valued AVAs using '+' notation in config files for
4920 *) Support for nameConstraints certificate extension.
4923 *) Support for policyConstraints certificate extension.
4926 *) Support for policyMappings certificate extension.
4929 *) Make sure the default DSA_METHOD implementation only uses its
4930 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
4931 and change its own handlers to be NULL so as to remove unnecessary
4932 indirection. This lets alternative implementations fallback to the
4933 default implementation more easily.
4936 *) Support for directoryName in GeneralName related extensions
4940 *) Make it possible to link applications using Makefile.shared.
4941 Make that possible even when linking against static libraries!
4944 *) Support for single pass processing for S/MIME signing. This now
4945 means that S/MIME signing can be done from a pipe, in addition
4946 cleartext signing (multipart/signed type) is effectively streaming
4947 and the signed data does not need to be all held in memory.
4949 This is done with a new flag PKCS7_STREAM. When this flag is set
4950 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
4951 is done after the data is output (and digests calculated) in
4952 SMIME_write_PKCS7().
4955 *) Add full support for -rpath/-R, both in shared libraries and
4956 applications, at least on the platforms where it's known how
4960 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
4961 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
4962 will now compute a table of multiples of the generator that
4963 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
4964 faster (notably in the case of a single point multiplication,
4965 scalar * generator).
4966 [Nils Larsch, Bodo Moeller]
4968 *) IPv6 support for certificate extensions. The various extensions
4969 which use the IP:a.b.c.d can now take IPv6 addresses using the
4970 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
4974 *) Added an ENGINE that implements RSA by performing private key
4975 exponentiations with the GMP library. The conversions to and from
4976 GMP's mpz_t format aren't optimised nor are any montgomery forms
4977 cached, and on x86 it appears OpenSSL's own performance has caught up.
4978 However there are likely to be other architectures where GMP could
4979 provide a boost. This ENGINE is not built in by default, but it can be
4980 specified at Configure time and should be accompanied by the necessary
4981 linker additions, eg;
4982 ./config -DOPENSSL_USE_GMP -lgmp
4985 *) "openssl engine" will not display ENGINE/DSO load failure errors when
4986 testing availability of engines with "-t" - the old behaviour is
4987 produced by increasing the feature's verbosity with "-tt".
4990 *) ECDSA routines: under certain error conditions uninitialized BN objects
4991 could be freed. Solution: make sure initialization is performed early
4992 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
4996 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
4997 and DH_METHOD (eg. by ENGINE implementations) to override the normal
4998 software implementations. For DSA and DH, parameter generation can
4999 also be overriden by providing the appropriate method callbacks.
5002 *) Change the "progress" mechanism used in key-generation and
5003 primality testing to functions that take a new BN_GENCB pointer in
5004 place of callback/argument pairs. The new API functions have "_ex"
5005 postfixes and the older functions are reimplemented as wrappers for
5006 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
5007 declarations of the old functions to help (graceful) attempts to
5008 migrate to the new functions. Also, the new key-generation API
5009 functions operate on a caller-supplied key-structure and return
5010 success/failure rather than returning a key or NULL - this is to
5011 help make "keygen" another member function of RSA_METHOD etc.
5013 Example for using the new callback interface:
5015 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
5019 BN_GENCB_set(&my_cb, my_callback, my_arg);
5021 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
5022 /* For the meaning of a, b in calls to my_callback(), see the
5023 * documentation of the function that calls the callback.
5024 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
5025 * my_callback should return 1 if it wants BN_is_prime_ex()
5026 * to continue, or 0 to stop.
5031 *) Change the ZLIB compression method to be stateful, and make it
5032 available to TLS with the number defined in
5033 draft-ietf-tls-compression-04.txt.
5036 *) Add the ASN.1 structures and functions for CertificatePair, which
5037 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
5039 CertificatePair ::= SEQUENCE {
5040 forward [0] Certificate OPTIONAL,
5041 reverse [1] Certificate OPTIONAL,
5042 -- at least one of the pair shall be present -- }
5044 Also implement the PEM functions to read and write certificate
5045 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
5047 This needed to be defined, mostly for the sake of the LDAP
5048 attribute crossCertificatePair, but may prove useful elsewhere as
5052 *) Make it possible to inhibit symlinking of shared libraries in
5053 Makefile.shared, for Cygwin's sake.
5056 *) Extend the BIGNUM API by creating a function
5057 void BN_set_negative(BIGNUM *a, int neg);
5058 and a macro that behave like
5059 int BN_is_negative(const BIGNUM *a);
5061 to avoid the need to access 'a->neg' directly in applications.
5064 *) Implement fast modular reduction for pseudo-Mersenne primes
5065 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
5066 EC_GROUP_new_curve_GFp() will now automatically use this
5068 [Nils Larsch <nla@trustcenter.de>]
5070 *) Add new lock type (CRYPTO_LOCK_BN).
5073 *) Change the ENGINE framework to automatically load engines
5074 dynamically from specific directories unless they could be
5075 found to already be built in or loaded. Move all the
5076 current engines except for the cryptodev one to a new
5078 The engines in engines/ are built as shared libraries if
5079 the "shared" options was given to ./Configure or ./config.
5080 Otherwise, they are inserted in libcrypto.a.
5081 /usr/local/ssl/engines is the default directory for dynamic
5082 engines, but that can be overriden at configure time through
5083 the usual use of --prefix and/or --openssldir, and at run
5084 time with the environment variable OPENSSL_ENGINES.
5085 [Geoff Thorpe and Richard Levitte]
5087 *) Add Makefile.shared, a helper makefile to build shared
5088 libraries. Adapt Makefile.org.
5091 *) Add version info to Win32 DLLs.
5092 [Peter 'Luna' Runestig" <peter@runestig.com>]
5094 *) Add new 'medium level' PKCS#12 API. Certificates and keys
5095 can be added using this API to created arbitrary PKCS#12
5096 files while avoiding the low level API.
5098 New options to PKCS12_create(), key or cert can be NULL and
5099 will then be omitted from the output file. The encryption
5100 algorithm NIDs can be set to -1 for no encryption, the mac
5101 iteration count can be set to 0 to omit the mac.
5103 Enhance pkcs12 utility by making the -nokeys and -nocerts
5104 options work when creating a PKCS#12 file. New option -nomac
5105 to omit the mac, NONE can be set for an encryption algorithm.
5106 New code is modified to use the enhanced PKCS12_create()
5107 instead of the low level API.
5110 *) Extend ASN1 encoder to support indefinite length constructed
5111 encoding. This can output sequences tags and octet strings in
5112 this form. Modify pk7_asn1.c to support indefinite length
5113 encoding. This is experimental and needs additional code to
5114 be useful, such as an ASN1 bio and some enhanced streaming
5117 Extend template encode functionality so that tagging is passed
5118 down to the template encoder.
5121 *) Let 'openssl req' fail if an argument to '-newkey' is not
5122 recognized instead of using RSA as a default.
5125 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
5126 As these are not official, they are not included in "ALL";
5127 the "ECCdraft" ciphersuite group alias can be used to select them.
5128 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
5130 *) Add ECDH engine support.
5131 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
5133 *) Add ECDH in new directory crypto/ecdh/.
5134 [Douglas Stebila (Sun Microsystems Laboratories)]
5136 *) Let BN_rand_range() abort with an error after 100 iterations
5137 without success (which indicates a broken PRNG).
5140 *) Change BN_mod_sqrt() so that it verifies that the input value
5141 is really the square of the return value. (Previously,
5142 BN_mod_sqrt would show GIGO behaviour.)
5145 *) Add named elliptic curves over binary fields from X9.62, SECG,
5146 and WAP/WTLS; add OIDs that were still missing.
5148 [Sheueling Chang Shantz and Douglas Stebila
5149 (Sun Microsystems Laboratories)]
5151 *) Extend the EC library for elliptic curves over binary fields
5152 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
5155 EC_GF2m_simple_method
5159 EC_GROUP_new_curve_GF2m
5160 EC_GROUP_set_curve_GF2m
5161 EC_GROUP_get_curve_GF2m
5162 EC_POINT_set_affine_coordinates_GF2m
5163 EC_POINT_get_affine_coordinates_GF2m
5164 EC_POINT_set_compressed_coordinates_GF2m
5166 Point compression for binary fields is disabled by default for
5167 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
5170 As binary polynomials are represented as BIGNUMs, various members
5171 of the EC_GROUP and EC_POINT data structures can be shared
5172 between the implementations for prime fields and binary fields;
5173 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
5174 are essentially identical to their ..._GFp counterparts.
5175 (For simplicity, the '..._GFp' prefix has been dropped from
5176 various internal method names.)
5178 An internal 'field_div' method (similar to 'field_mul' and
5179 'field_sqr') has been added; this is used only for binary fields.
5181 [Sheueling Chang Shantz and Douglas Stebila
5182 (Sun Microsystems Laboratories)]
5184 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
5185 through methods ('mul', 'precompute_mult').
5187 The generic implementations (now internally called 'ec_wNAF_mul'
5188 and 'ec_wNAF_precomputed_mult') remain the default if these
5189 methods are undefined.
5191 [Sheueling Chang Shantz and Douglas Stebila
5192 (Sun Microsystems Laboratories)]
5194 *) New function EC_GROUP_get_degree, which is defined through
5195 EC_METHOD. For curves over prime fields, this returns the bit
5196 length of the modulus.
5198 [Sheueling Chang Shantz and Douglas Stebila
5199 (Sun Microsystems Laboratories)]
5201 *) New functions EC_GROUP_dup, EC_POINT_dup.
5202 (These simply call ..._new and ..._copy).
5204 [Sheueling Chang Shantz and Douglas Stebila
5205 (Sun Microsystems Laboratories)]
5207 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
5208 Polynomials are represented as BIGNUMs (where the sign bit is not
5209 used) in the following functions [macros]:
5212 BN_GF2m_sub [= BN_GF2m_add]
5213 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
5214 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
5215 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
5217 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
5218 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
5219 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
5220 BN_GF2m_cmp [= BN_ucmp]
5222 (Note that only the 'mod' functions are actually for fields GF(2^m).
5223 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
5225 For some functions, an the irreducible polynomial defining a
5226 field can be given as an 'unsigned int[]' with strictly
5227 decreasing elements giving the indices of those bits that are set;
5228 i.e., p[] represents the polynomial
5229 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
5231 p[0] > p[1] > ... > p[k] = 0.
5232 This applies to the following functions:
5237 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
5238 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
5240 BN_GF2m_mod_sqrt_arr
5241 BN_GF2m_mod_solve_quad_arr
5245 Conversion can be performed by the following functions:
5250 bntest.c has additional tests for binary polynomial arithmetic.
5252 Two implementations for BN_GF2m_mod_div() are available.
5253 The default algorithm simply uses BN_GF2m_mod_inv() and
5254 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
5255 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
5256 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
5258 [Sheueling Chang Shantz and Douglas Stebila
5259 (Sun Microsystems Laboratories)]
5261 *) Add new error code 'ERR_R_DISABLED' that can be used when some
5262 functionality is disabled at compile-time.
5263 [Douglas Stebila <douglas.stebila@sun.com>]
5265 *) Change default behaviour of 'openssl asn1parse' so that more
5266 information is visible when viewing, e.g., a certificate:
5268 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
5269 mode the content of non-printable OCTET STRINGs is output in a
5270 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
5271 avoid the appearance of a printable string.
5272 [Nils Larsch <nla@trustcenter.de>]
5274 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
5276 EC_GROUP_set_asn1_flag()
5277 EC_GROUP_get_asn1_flag()
5278 EC_GROUP_set_point_conversion_form()
5279 EC_GROUP_get_point_conversion_form()
5280 These control ASN1 encoding details:
5281 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
5282 has been set to OPENSSL_EC_NAMED_CURVE.
5283 - Points are encoded in uncompressed form by default; options for
5284 asn1_for are as for point2oct, namely
5285 POINT_CONVERSION_COMPRESSED
5286 POINT_CONVERSION_UNCOMPRESSED
5287 POINT_CONVERSION_HYBRID
5289 Also add 'seed' and 'seed_len' members to EC_GROUP with access
5292 EC_GROUP_get0_seed()
5293 EC_GROUP_get_seed_len()
5294 This is used only for ASN1 purposes (so far).
5295 [Nils Larsch <nla@trustcenter.de>]
5297 *) Add 'field_type' member to EC_METHOD, which holds the NID
5298 of the appropriate field type OID. The new function
5299 EC_METHOD_get_field_type() returns this value.
5300 [Nils Larsch <nla@trustcenter.de>]
5305 EC_POINT_point2hex()
5306 EC_POINT_hex2point()
5307 providing useful interfaces to EC_POINT_point2oct() and
5308 EC_POINT_oct2point().
5309 [Nils Larsch <nla@trustcenter.de>]
5311 *) Change internals of the EC library so that the functions
5312 EC_GROUP_set_generator()
5313 EC_GROUP_get_generator()
5314 EC_GROUP_get_order()
5315 EC_GROUP_get_cofactor()
5316 are implemented directly in crypto/ec/ec_lib.c and not dispatched
5317 to methods, which would lead to unnecessary code duplication when
5318 adding different types of curves.
5319 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
5321 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
5322 arithmetic, and such that modified wNAFs are generated
5323 (which avoid length expansion in many cases).
5326 *) Add a function EC_GROUP_check_discriminant() (defined via
5327 EC_METHOD) that verifies that the curve discriminant is non-zero.
5329 Add a function EC_GROUP_check() that makes some sanity tests
5330 on a EC_GROUP, its generator and order. This includes
5331 EC_GROUP_check_discriminant().
5332 [Nils Larsch <nla@trustcenter.de>]
5334 *) Add ECDSA in new directory crypto/ecdsa/.
5336 Add applications 'openssl ecparam' and 'openssl ecdsa'
5337 (these are based on 'openssl dsaparam' and 'openssl dsa').
5339 ECDSA support is also included in various other files across the
5340 library. Most notably,
5341 - 'openssl req' now has a '-newkey ecdsa:file' option;
5342 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
5343 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
5344 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
5345 them suitable for ECDSA where domain parameters must be
5346 extracted before the specific public key;
5347 - ECDSA engine support has been added.
5348 [Nils Larsch <nla@trustcenter.de>]
5350 *) Include some named elliptic curves, and add OIDs from X9.62,
5351 SECG, and WAP/WTLS. Each curve can be obtained from the new
5353 EC_GROUP_new_by_curve_name(),
5354 and the list of available named curves can be obtained with
5355 EC_get_builtin_curves().
5356 Also add a 'curve_name' member to EC_GROUP objects, which can be
5358 EC_GROUP_set_curve_name()
5359 EC_GROUP_get_curve_name()
5360 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
5362 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
5363 was actually never needed) and in BN_mul(). The removal in BN_mul()
5364 required a small change in bn_mul_part_recursive() and the addition
5365 of the functions bn_cmp_part_words(), bn_sub_part_words() and
5366 bn_add_part_words(), which do the same thing as bn_cmp_words(),
5367 bn_sub_words() and bn_add_words() except they take arrays with
5371 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
5373 *) Cleanse PEM buffers before freeing them since they may contain
5375 [Benjamin Bennett <ben@psc.edu>]
5377 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
5378 a ciphersuite string such as "DEFAULT:RSA" cannot enable
5379 authentication-only ciphersuites.
5382 *) Since AES128 and AES256 share a single mask bit in the logic of
5383 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
5384 kludge to work properly if AES128 is available and AES256 isn't.
5387 *) Expand security boundary to match 1.1.1 module.
5390 *) Remove redundant features: hash file source, editing of test vectors
5391 modify fipsld to use external fips_premain.c signature.
5394 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
5395 run algorithm test programs.
5398 *) Make algorithm test programs more tolerant of whitespace.
5401 *) Have SSL/TLS server implementation tolerate "mismatched" record
5402 protocol version while receiving ClientHello even if the
5403 ClientHello is fragmented. (The server can't insist on the
5404 particular protocol version it has chosen before the ServerHello
5405 message has informed the client about his choice.)
5408 *) Load error codes if they are not already present instead of using a
5409 static variable. This allows them to be cleanly unloaded and reloaded.
5412 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
5414 *) Introduce limits to prevent malicious keys being able to
5415 cause a denial of service. (CVE-2006-2940)
5416 [Steve Henson, Bodo Moeller]
5418 *) Fix ASN.1 parsing of certain invalid structures that can result
5419 in a denial of service. (CVE-2006-2937) [Steve Henson]
5421 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
5422 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
5424 *) Fix SSL client code which could crash if connecting to a
5425 malicious SSLv2 server. (CVE-2006-4343)
5426 [Tavis Ormandy and Will Drewry, Google Security Team]
5428 *) Change ciphersuite string processing so that an explicit
5429 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
5430 will no longer include "AES128-SHA"), and any other similar
5431 ciphersuite (same bitmap) from *other* protocol versions (so that
5432 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
5433 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
5434 changes from 0.9.8b and 0.9.8d.
5437 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
5439 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
5440 (CVE-2006-4339) [Ben Laurie and Google Security Team]
5442 *) Change the Unix randomness entropy gathering to use poll() when
5443 possible instead of select(), since the latter has some
5444 undesirable limitations.
5445 [Darryl Miles via Richard Levitte and Bodo Moeller]
5447 *) Disable rogue ciphersuites:
5449 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
5450 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
5451 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
5453 The latter two were purportedly from
5454 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
5457 Also deactive the remaining ciphersuites from
5458 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
5459 unofficial, and the ID has long expired.
5462 *) Fix RSA blinding Heisenbug (problems sometimes occurred on
5463 dual-core machines) and other potential thread-safety issues.
5466 Changes between 0.9.7i and 0.9.7j [04 May 2006]
5468 *) Adapt fipsld and the build system to link against the validated FIPS
5469 module in FIPS mode.
5472 *) Fixes for VC++ 2005 build under Windows.
5475 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
5476 from a Windows bash shell such as MSYS. It is autodetected from the
5477 "config" script when run from a VC++ environment. Modify standard VC++
5478 build to use fipscanister.o from the GNU make build.
5481 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
5483 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
5484 The value now differs depending on if you build for FIPS or not.
5485 BEWARE! A program linked with a shared FIPSed libcrypto can't be
5486 safely run with a non-FIPSed libcrypto, as it may crash because of
5487 the difference induced by this change.
5490 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
5492 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
5493 (part of SSL_OP_ALL). This option used to disable the
5494 countermeasure against man-in-the-middle protocol-version
5495 rollback in the SSL 2.0 server implementation, which is a bad
5496 idea. (CVE-2005-2969)
5498 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
5499 for Information Security, National Institute of Advanced Industrial
5500 Science and Technology [AIST], Japan)]
5502 *) Minimal support for X9.31 signatures and PSS padding modes. This is
5503 mainly for FIPS compliance and not fully integrated at this stage.
5506 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
5507 the exponentiation using a fixed-length exponent. (Otherwise,
5508 the information leaked through timing could expose the secret key
5509 after many signatures; cf. Bleichenbacher's attack on DSA with
5513 *) Make a new fixed-window mod_exp implementation the default for
5514 RSA, DSA, and DH private-key operations so that the sequence of
5515 squares and multiplies and the memory access pattern are
5516 independent of the particular secret key. This will mitigate
5517 cache-timing and potential related attacks.
5519 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
5520 and this is automatically used by BN_mod_exp_mont() if the new flag
5521 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
5522 will use this BN flag for private exponents unless the flag
5523 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
5524 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
5526 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
5528 *) Change the client implementation for SSLv23_method() and
5529 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
5530 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
5531 (Previously, the SSL 2.0 backwards compatible Client Hello
5532 message format would be used even with SSL_OP_NO_SSLv2.)
5535 *) Add support for smime-type MIME parameter in S/MIME messages which some
5539 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
5540 a threadsafe manner. Modify rsa code to use new function and add calls
5541 to dsa and dh code (which had race conditions before).
5544 *) Include the fixed error library code in the C error file definitions
5545 instead of fixing them up at runtime. This keeps the error code
5546 structures constant.
5549 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
5551 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
5554 *) Fixes for newer kerberos headers. NB: the casts are needed because
5555 the 'length' field is signed on one version and unsigned on another
5556 with no (?) obvious way to tell the difference, without these VC++
5557 complains. Also the "definition" of FAR (blank) is no longer included
5558 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
5559 some needed definitions.
5562 *) Undo Cygwin change.
5565 *) Added support for proxy certificates according to RFC 3820.
5566 Because they may be a security thread to unaware applications,
5567 they must be explicitly allowed in run-time. See
5568 docs/HOWTO/proxy_certificates.txt for further information.
5571 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
5573 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
5574 server and client random values. Previously
5575 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
5576 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
5578 This change has negligible security impact because:
5580 1. Server and client random values still have 24 bytes of pseudo random
5583 2. Server and client random values are sent in the clear in the initial
5586 3. The master secret is derived using the premaster secret (48 bytes in
5587 size for static RSA ciphersuites) as well as client server and random
5590 The OpenSSL team would like to thank the UK NISCC for bringing this issue
5593 [Stephen Henson, reported by UK NISCC]
5595 *) Use Windows randomness collection on Cygwin.
5598 *) Fix hang in EGD/PRNGD query when communication socket is closed
5599 prematurely by EGD/PRNGD.
5600 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
5602 *) Prompt for pass phrases when appropriate for PKCS12 input format.
5605 *) Back-port of selected performance improvements from development
5606 branch, as well as improved support for PowerPC platforms.
5609 *) Add lots of checks for memory allocation failure, error codes to indicate
5610 failure and freeing up memory if a failure occurs.
5611 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
5613 *) Add new -passin argument to dgst.
5616 *) Perform some character comparisons of different types in X509_NAME_cmp:
5617 this is needed for some certificates that reencode DNs into UTF8Strings
5618 (in violation of RFC3280) and can't or wont issue name rollover
5622 *) Make an explicit check during certificate validation to see that
5623 the CA setting in each certificate on the chain is correct. As a
5624 side effect always do the following basic checks on extensions,
5625 not just when there's an associated purpose to the check:
5627 - if there is an unhandled critical extension (unless the user
5628 has chosen to ignore this fault)
5629 - if the path length has been exceeded (if one is set at all)
5630 - that certain extensions fit the associated purpose (if one has
5634 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
5636 *) Avoid a race condition when CRLs are checked in a multi threaded
5637 environment. This would happen due to the reordering of the revoked
5638 entries during signature checking and serial number lookup. Now the
5639 encoding is cached and the serial number sort performed under a lock.
5640 Add new STACK function sk_is_sorted().
5643 *) Add Delta CRL to the extension code.
5646 *) Various fixes to s3_pkt.c so alerts are sent properly.
5647 [David Holmes <d.holmes@f5.com>]
5649 *) Reduce the chances of duplicate issuer name and serial numbers (in
5650 violation of RFC3280) using the OpenSSL certificate creation utilities.
5651 This is done by creating a random 64 bit value for the initial serial
5652 number when a serial number file is created or when a self signed
5653 certificate is created using 'openssl req -x509'. The initial serial
5654 number file is created using 'openssl x509 -next_serial' in CA.pl
5655 rather than being initialized to 1.
5658 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
5660 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
5661 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
5662 [Joe Orton, Steve Henson]
5664 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
5666 [Joe Orton, Steve Henson]
5668 *) Make it possible to have multiple active certificates with the same
5669 subject in the CA index file. This is done only if the keyword
5670 'unique_subject' is set to 'no' in the main CA section (default
5671 if 'CA_default') of the configuration file. The value is saved
5672 with the database itself in a separate index attribute file,
5673 named like the index file with '.attr' appended to the name.
5676 *) X509 verify fixes. Disable broken certificate workarounds when
5677 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
5678 keyUsage extension present. Don't accept CRLs with unhandled critical
5679 extensions: since verify currently doesn't process CRL extensions this
5680 rejects a CRL with *any* critical extensions. Add new verify error codes
5684 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
5685 A clarification of RFC2560 will require the use of OCTET STRINGs and
5686 some implementations cannot handle the current raw format. Since OpenSSL
5687 copies and compares OCSP nonces as opaque blobs without any attempt at
5688 parsing them this should not create any compatibility issues.
5691 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
5692 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
5693 this HMAC (and other) operations are several times slower than OpenSSL
5697 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
5698 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
5700 *) Use the correct content when signing type "other".
5703 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
5705 *) Fix various bugs revealed by running the NISCC test suite:
5707 Stop out of bounds reads in the ASN1 code when presented with
5708 invalid tags (CVE-2003-0543 and CVE-2003-0544).
5710 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
5712 If verify callback ignores invalid public key errors don't try to check
5713 certificate signature with the NULL public key.
5717 *) New -ignore_err option in ocsp application to stop the server
5718 exiting on the first error in a request.
5721 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
5722 if the server requested one: as stated in TLS 1.0 and SSL 3.0
5726 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
5727 extra data after the compression methods not only for TLS 1.0
5728 but also for SSL 3.0 (as required by the specification).
5729 [Bodo Moeller; problem pointed out by Matthias Loepfe]
5731 *) Change X509_certificate_type() to mark the key as exported/exportable
5732 when it's 512 *bits* long, not 512 bytes.
5735 *) Change AES_cbc_encrypt() so it outputs exact multiple of
5736 blocks during encryption.
5739 *) Various fixes to base64 BIO and non blocking I/O. On write
5740 flushes were not handled properly if the BIO retried. On read
5741 data was not being buffered properly and had various logic bugs.
5742 This also affects blocking I/O when the data being decoded is a
5746 *) Various S/MIME bugfixes and compatibility changes:
5747 output correct application/pkcs7 MIME type if
5748 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
5749 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
5750 of files as .eml work). Correctly handle very long lines in MIME
5754 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
5756 *) Countermeasure against the Klima-Pokorny-Rosa extension of
5757 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
5758 a protocol version number mismatch like a decryption error
5759 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
5762 *) Turn on RSA blinding by default in the default implementation
5763 to avoid a timing attack. Applications that don't want it can call
5764 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
5765 They would be ill-advised to do so in most cases.
5766 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
5768 *) Change RSA blinding code so that it works when the PRNG is not
5769 seeded (in this case, the secret RSA exponent is abused as
5770 an unpredictable seed -- if it is not unpredictable, there
5771 is no point in blinding anyway). Make RSA blinding thread-safe
5772 by remembering the creator's thread ID in rsa->blinding and
5773 having all other threads use local one-time blinding factors
5774 (this requires more computation than sharing rsa->blinding, but
5775 avoids excessive locking; and if an RSA object is not shared
5776 between threads, blinding will still be very fast).
5779 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
5780 ENGINE as defaults for all supported algorithms irrespective of
5781 the 'flags' parameter. 'flags' is now honoured, so applications
5782 should make sure they are passing it correctly.
5785 *) Target "mingw" now allows native Windows code to be generated in
5786 the Cygwin environment as well as with the MinGW compiler.
5789 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
5791 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
5792 via timing by performing a MAC computation even if incorrect
5793 block cipher padding has been found. This is a countermeasure
5794 against active attacks where the attacker has to distinguish
5795 between bad padding and a MAC verification error. (CVE-2003-0078)
5797 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
5798 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
5799 Martin Vuagnoux (EPFL, Ilion)]
5801 *) Make the no-err option work as intended. The intention with no-err
5802 is not to have the whole error stack handling routines removed from
5803 libcrypto, it's only intended to remove all the function name and
5804 reason texts, thereby removing some of the footprint that may not
5805 be interesting if those errors aren't displayed anyway.
5807 NOTE: it's still possible for any application or module to have it's
5808 own set of error texts inserted. The routines are there, just not
5809 used by default when no-err is given.
5812 *) Add support for FreeBSD on IA64.
5813 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
5815 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
5816 Kerberos function mit_des_cbc_cksum(). Before this change,
5817 the value returned by DES_cbc_cksum() was like the one from
5818 mit_des_cbc_cksum(), except the bytes were swapped.
5819 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
5821 *) Allow an application to disable the automatic SSL chain building.
5822 Before this a rather primitive chain build was always performed in
5823 ssl3_output_cert_chain(): an application had no way to send the
5824 correct chain if the automatic operation produced an incorrect result.
5826 Now the chain builder is disabled if either:
5828 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
5830 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
5832 The reasoning behind this is that an application would not want the
5833 auto chain building to take place if extra chain certificates are
5834 present and it might also want a means of sending no additional
5835 certificates (for example the chain has two certificates and the
5839 *) Add the possibility to build without the ENGINE framework.
5840 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
5842 *) Under Win32 gmtime() can return NULL: check return value in
5843 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
5846 *) DSA routines: under certain error conditions uninitialized BN objects
5847 could be freed. Solution: make sure initialization is performed early
5848 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
5849 Nils Larsch <nla@trustcenter.de> via PR#459)
5852 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
5853 checked on reconnect on the client side, therefore session resumption
5854 could still fail with a "ssl session id is different" error. This
5855 behaviour is masked when SSL_OP_ALL is used due to
5856 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
5857 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
5858 followup to PR #377.
5861 *) IA-32 assembler support enhancements: unified ELF targets, support
5862 for SCO/Caldera platforms, fix for Cygwin shared build.
5865 *) Add support for FreeBSD on sparc64. As a consequence, support for
5866 FreeBSD on non-x86 processors is separate from x86 processors on
5867 the config script, much like the NetBSD support.
5868 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
5870 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
5872 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
5875 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
5876 code (06) was taken as the first octet of the session ID and the last
5877 octet was ignored consequently. As a result SSLv2 client side session
5878 caching could not have worked due to the session ID mismatch between
5880 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
5884 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
5885 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
5889 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
5890 seems that in spite of existing for more than a year, many application
5891 author have done nothing to provide the necessary callbacks, which
5892 means that this particular engine will not work properly anywhere.
5893 This is a very unfortunate situation which forces us, in the name
5894 of usability, to give the hw_ncipher.c a static lock, which is part
5896 NOTE: This is for the 0.9.7 series ONLY. This hack will never
5897 appear in 0.9.8 or later. We EXPECT application authors to have
5898 dealt properly with this when 0.9.8 is released (unless we actually
5899 make such changes in the libcrypto locking code that changes will
5900 have to be made anyway).
5903 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
5904 octets have been read, EOF or an error occurs. Without this change
5905 some truncated ASN1 structures will not produce an error.
5908 *) Disable Heimdal support, since it hasn't been fully implemented.
5909 Still give the possibility to force the use of Heimdal, but with
5910 warnings and a request that patches get sent to openssl-dev.
5913 *) Add the VC-CE target, introduce the WINCE sysname, and add
5914 INSTALL.WCE and appropriate conditionals to make it build.
5915 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
5917 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
5918 cygssl-x.y.z.dll, where x, y and z are the major, minor and
5919 edit numbers of the version.
5920 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
5922 *) Introduce safe string copy and catenation functions
5923 (BUF_strlcpy() and BUF_strlcat()).
5924 [Ben Laurie (CHATS) and Richard Levitte]
5926 *) Avoid using fixed-size buffers for one-line DNs.
5927 [Ben Laurie (CHATS)]
5929 *) Add BUF_MEM_grow_clean() to avoid information leakage when
5930 resizing buffers containing secrets, and use where appropriate.
5931 [Ben Laurie (CHATS)]
5933 *) Avoid using fixed size buffers for configuration file location.
5934 [Ben Laurie (CHATS)]
5936 *) Avoid filename truncation for various CA files.
5937 [Ben Laurie (CHATS)]
5939 *) Use sizeof in preference to magic numbers.
5940 [Ben Laurie (CHATS)]
5942 *) Avoid filename truncation in cert requests.
5943 [Ben Laurie (CHATS)]
5945 *) Add assertions to check for (supposedly impossible) buffer
5947 [Ben Laurie (CHATS)]
5949 *) Don't cache truncated DNS entries in the local cache (this could
5950 potentially lead to a spoofing attack).
5951 [Ben Laurie (CHATS)]
5953 *) Fix various buffers to be large enough for hex/decimal
5954 representations in a platform independent manner.
5955 [Ben Laurie (CHATS)]
5957 *) Add CRYPTO_realloc_clean() to avoid information leakage when
5958 resizing buffers containing secrets, and use where appropriate.
5959 [Ben Laurie (CHATS)]
5961 *) Add BIO_indent() to avoid much slightly worrying code to do
5963 [Ben Laurie (CHATS)]
5965 *) Convert sprintf()/BIO_puts() to BIO_printf().
5966 [Ben Laurie (CHATS)]
5968 *) buffer_gets() could terminate with the buffer only half
5970 [Ben Laurie (CHATS)]
5972 *) Add assertions to prevent user-supplied crypto functions from
5973 overflowing internal buffers by having large block sizes, etc.
5974 [Ben Laurie (CHATS)]
5976 *) New OPENSSL_assert() macro (similar to assert(), but enabled
5978 [Ben Laurie (CHATS)]
5980 *) Eliminate unused copy of key in RC4.
5981 [Ben Laurie (CHATS)]
5983 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
5984 [Ben Laurie (CHATS)]
5986 *) Fix off-by-one error in EGD path.
5987 [Ben Laurie (CHATS)]
5989 *) If RANDFILE path is too long, ignore instead of truncating.
5990 [Ben Laurie (CHATS)]
5992 *) Eliminate unused and incorrectly sized X.509 structure
5994 [Ben Laurie (CHATS)]
5996 *) Eliminate unused and dangerous function knumber().
5997 [Ben Laurie (CHATS)]
5999 *) Eliminate unused and dangerous structure, KSSL_ERR.
6000 [Ben Laurie (CHATS)]
6002 *) Protect against overlong session ID context length in an encoded
6003 session object. Since these are local, this does not appear to be
6005 [Ben Laurie (CHATS)]
6007 *) Change from security patch (see 0.9.6e below) that did not affect
6008 the 0.9.6 release series:
6010 Remote buffer overflow in SSL3 protocol - an attacker could
6011 supply an oversized master key in Kerberos-enabled versions.
6013 [Ben Laurie (CHATS)]
6015 *) Change the SSL kerb5 codes to match RFC 2712.
6018 *) Make -nameopt work fully for req and add -reqopt switch.
6019 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
6021 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
6022 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
6024 *) Make sure tests can be performed even if the corresponding algorithms
6025 have been removed entirely. This was also the last step to make
6026 OpenSSL compilable with DJGPP under all reasonable conditions.
6027 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
6029 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
6030 to allow version independent disabling of normally unselected ciphers,
6031 which may be activated as a side-effect of selecting a single cipher.
6033 (E.g., cipher list string "RSA" enables ciphersuites that are left
6034 out of "ALL" because they do not provide symmetric encryption.
6035 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
6036 [Lutz Jaenicke, Bodo Moeller]
6038 *) Add appropriate support for separate platform-dependent build
6039 directories. The recommended way to make a platform-dependent
6040 build directory is the following (tested on Linux), maybe with
6043 # Place yourself outside of the OpenSSL source tree. In
6044 # this example, the environment variable OPENSSL_SOURCE
6045 # is assumed to contain the absolute OpenSSL source directory.
6046 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
6047 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
6048 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
6049 mkdir -p `dirname $F`
6050 ln -s $OPENSSL_SOURCE/$F $F
6053 To be absolutely sure not to disturb the source tree, a "make clean"
6054 is a good thing. If it isn't successful, don't worry about it,
6055 it probably means the source directory is very clean.
6058 *) Make sure any ENGINE control commands make local copies of string
6059 pointers passed to them whenever necessary. Otherwise it is possible
6060 the caller may have overwritten (or deallocated) the original string
6061 data when a later ENGINE operation tries to use the stored values.
6062 [Götz Babin-Ebell <babinebell@trustcenter.de>]
6064 *) Improve diagnostics in file reading and command-line digests.
6065 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
6067 *) Add AES modes CFB and OFB to the object database. Correct an
6068 error in AES-CFB decryption.
6071 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
6072 allows existing EVP_CIPHER_CTX structures to be reused after
6073 calling EVP_*Final(). This behaviour is used by encryption
6074 BIOs and some applications. This has the side effect that
6075 applications must explicitly clean up cipher contexts with
6076 EVP_CIPHER_CTX_cleanup() or they will leak memory.
6079 *) Check the values of dna and dnb in bn_mul_recursive before calling
6080 bn_mul_comba (a non zero value means the a or b arrays do not contain
6081 n2 elements) and fallback to bn_mul_normal if either is not zero.
6084 *) Fix escaping of non-ASCII characters when using the -subj option
6085 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
6088 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
6089 form for "surname", serialNumber has no short form.
6090 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
6091 therefore remove "mail" short name for "internet 7".
6092 The OID for unique identifiers in X509 certificates is
6093 x500UniqueIdentifier, not uniqueIdentifier.
6094 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
6097 *) Add an "init" command to the ENGINE config module and auto initialize
6098 ENGINEs. Without any "init" command the ENGINE will be initialized
6099 after all ctrl commands have been executed on it. If init=1 the
6100 ENGINE is initailized at that point (ctrls before that point are run
6101 on the uninitialized ENGINE and after on the initialized one). If
6102 init=0 then the ENGINE will not be iniatialized at all.
6105 *) Fix the 'app_verify_callback' interface so that the user-defined
6106 argument is actually passed to the callback: In the
6107 SSL_CTX_set_cert_verify_callback() prototype, the callback
6108 declaration has been changed from
6111 int (*cb)(X509_STORE_CTX *,void *);
6112 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
6113 i=s->ctx->app_verify_callback(&ctx)
6114 has been changed into
6115 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
6117 To update applications using SSL_CTX_set_cert_verify_callback(),
6118 a dummy argument can be added to their callback functions.
6119 [D. K. Smetters <smetters@parc.xerox.com>]
6121 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
6122 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
6124 *) Add and OPENSSL_LOAD_CONF define which will cause
6125 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
6126 This allows older applications to transparently support certain
6127 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
6128 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
6129 load the config file and OPENSSL_add_all_algorithms_conf() which will
6130 always load it have also been added.
6133 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
6134 Adjust NIDs and EVP layer.
6135 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
6137 *) Config modules support in openssl utility.
6139 Most commands now load modules from the config file,
6140 though in a few (such as version) this isn't done
6141 because it couldn't be used for anything.
6143 In the case of ca and req the config file used is
6144 the same as the utility itself: that is the -config
6145 command line option can be used to specify an
6149 *) Move default behaviour from OPENSSL_config(). If appname is NULL
6150 use "openssl_conf" if filename is NULL use default openssl config file.
6153 *) Add an argument to OPENSSL_config() to allow the use of an alternative
6154 config section name. Add a new flag to tolerate a missing config file
6155 and move code to CONF_modules_load_file().
6158 *) Support for crypto accelerator cards from Accelerated Encryption
6159 Processing, www.aep.ie. (Use engine 'aep')
6160 The support was copied from 0.9.6c [engine] and adapted/corrected
6161 to work with the new engine framework.
6162 [AEP Inc. and Richard Levitte]
6164 *) Support for SureWare crypto accelerator cards from Baltimore
6165 Technologies. (Use engine 'sureware')
6166 The support was copied from 0.9.6c [engine] and adapted
6167 to work with the new engine framework.
6170 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
6171 make the newer ENGINE framework commands for the CHIL engine work.
6172 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
6174 *) Make it possible to produce shared libraries on ReliantUNIX.
6175 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
6177 *) Add the configuration target debug-linux-ppro.
6178 Make 'openssl rsa' use the general key loading routines
6179 implemented in apps.c, and make those routines able to
6180 handle the key format FORMAT_NETSCAPE and the variant
6182 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
6184 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
6185 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
6187 *) Add -keyform to rsautl, and document -engine.
6188 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
6190 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
6191 BIO_R_NO_SUCH_FILE error code rather than the generic
6192 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
6195 *) Add new functions
6197 ERR_peek_last_error_line
6198 ERR_peek_last_error_line_data.
6199 These are similar to
6202 ERR_peek_error_line_data,
6203 but report on the latest error recorded rather than the first one
6204 still in the error queue.
6205 [Ben Laurie, Bodo Moeller]
6207 *) default_algorithms option in ENGINE config module. This allows things
6209 default_algorithms = ALL
6210 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
6213 *) Preliminary ENGINE config module.
6216 *) New experimental application configuration code.
6219 *) Change the AES code to follow the same name structure as all other
6220 symmetric ciphers, and behave the same way. Move everything to
6221 the directory crypto/aes, thereby obsoleting crypto/rijndael.
6222 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
6224 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
6225 [Ben Laurie and Theo de Raadt]
6227 *) Add option to output public keys in req command.
6228 [Massimiliano Pala madwolf@openca.org]
6230 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
6231 (up to about 10% better than before for P-192 and P-224).
6234 *) New functions/macros
6236 SSL_CTX_set_msg_callback(ctx, cb)
6237 SSL_CTX_set_msg_callback_arg(ctx, arg)
6238 SSL_set_msg_callback(ssl, cb)
6239 SSL_set_msg_callback_arg(ssl, arg)
6241 to request calling a callback function
6243 void cb(int write_p, int version, int content_type,
6244 const void *buf, size_t len, SSL *ssl, void *arg)
6246 whenever a protocol message has been completely received
6247 (write_p == 0) or sent (write_p == 1). Here 'version' is the
6248 protocol version according to which the SSL library interprets
6249 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
6250 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
6251 the content type as defined in the SSL 3.0/TLS 1.0 protocol
6252 specification (change_cipher_spec(20), alert(21), handshake(22)).
6253 'buf' and 'len' point to the actual message, 'ssl' to the
6254 SSL object, and 'arg' is the application-defined value set by
6255 SSL[_CTX]_set_msg_callback_arg().
6257 'openssl s_client' and 'openssl s_server' have new '-msg' options
6258 to enable a callback that displays all protocol messages.
6261 *) Change the shared library support so shared libraries are built as
6262 soon as the corresponding static library is finished, and thereby get
6263 openssl and the test programs linked against the shared library.
6264 This still only happens when the keyword "shard" has been given to
6265 the configuration scripts.
6267 NOTE: shared library support is still an experimental thing, and
6268 backward binary compatibility is still not guaranteed.
6269 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
6271 *) Add support for Subject Information Access extension.
6272 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
6274 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
6275 additional bytes when new memory had to be allocated, not just
6276 when reusing an existing buffer.
6279 *) New command line and configuration option 'utf8' for the req command.
6280 This allows field values to be specified as UTF8 strings.
6283 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
6284 runs for the former and machine-readable output for the latter.
6287 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
6288 of the e-mail address in the DN (i.e., it will go into a certificate
6289 extension only). The new configuration file option 'email_in_dn = no'
6290 has the same effect.
6291 [Massimiliano Pala madwolf@openca.org]
6293 *) Change all functions with names starting with des_ to be starting
6294 with DES_ instead. Add wrappers that are compatible with libdes,
6295 but are named _ossl_old_des_*. Finally, add macros that map the
6296 des_* symbols to the corresponding _ossl_old_des_* if libdes
6297 compatibility is desired. If OpenSSL 0.9.6c compatibility is
6298 desired, the des_* symbols will be mapped to DES_*, with one
6301 Since we provide two compatibility mappings, the user needs to
6302 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
6303 compatibility is desired. The default (i.e., when that macro
6304 isn't defined) is OpenSSL 0.9.6c compatibility.
6306 There are also macros that enable and disable the support of old
6307 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
6308 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
6309 are defined, the default will apply: to support the old des routines.
6311 In either case, one must include openssl/des.h to get the correct
6312 definitions. Do not try to just include openssl/des_old.h, that
6315 NOTE: This is a major break of an old API into a new one. Software
6316 authors are encouraged to switch to the DES_ style functions. Some
6317 time in the future, des_old.h and the libdes compatibility functions
6318 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
6319 default), and then completely removed.
6322 *) Test for certificates which contain unsupported critical extensions.
6323 If such a certificate is found during a verify operation it is
6324 rejected by default: this behaviour can be overridden by either
6325 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
6326 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
6327 X509_supported_extension() has also been added which returns 1 if a
6328 particular extension is supported.
6331 *) Modify the behaviour of EVP cipher functions in similar way to digests
6332 to retain compatibility with existing code.
6335 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
6336 compatibility with existing code. In particular the 'ctx' parameter does
6337 not have to be to be initialized before the call to EVP_DigestInit() and
6338 it is tidied up after a call to EVP_DigestFinal(). New function
6339 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
6340 EVP_MD_CTX_copy() changed to not require the destination to be
6341 initialized valid and new function EVP_MD_CTX_copy_ex() added which
6342 requires the destination to be valid.
6344 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
6345 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
6348 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
6349 so that complete 'Handshake' protocol structures are kept in memory
6350 instead of overwriting 'msg_type' and 'length' with 'body' data.
6353 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
6354 [Massimo Santin via Richard Levitte]
6356 *) Major restructuring to the underlying ENGINE code. This includes
6357 reduction of linker bloat, separation of pure "ENGINE" manipulation
6358 (initialisation, etc) from functionality dealing with implementations
6359 of specific crypto iterfaces. This change also introduces integrated
6360 support for symmetric ciphers and digest implementations - so ENGINEs
6361 can now accelerate these by providing EVP_CIPHER and EVP_MD
6362 implementations of their own. This is detailed in crypto/engine/README
6363 as it couldn't be adequately described here. However, there are a few
6364 API changes worth noting - some RSA, DSA, DH, and RAND functions that
6365 were changed in the original introduction of ENGINE code have now
6366 reverted back - the hooking from this code to ENGINE is now a good
6367 deal more passive and at run-time, operations deal directly with
6368 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
6369 dereferencing through an ENGINE pointer any more. Also, the ENGINE
6370 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
6371 they were not being used by the framework as there is no concept of a
6372 BIGNUM_METHOD and they could not be generalised to the new
6373 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
6374 ENGINE_cpy() has been removed as it cannot be consistently defined in
6378 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
6381 *) Change mkdef.pl to sort symbols that get the same entry number,
6382 and make sure the automatically generated functions ERR_load_*
6383 become part of libeay.num as well.
6386 *) New function SSL_renegotiate_pending(). This returns true once
6387 renegotiation has been requested (either SSL_renegotiate() call
6388 or HelloRequest/ClientHello received from the peer) and becomes
6389 false once a handshake has been completed.
6390 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
6391 sends a HelloRequest, but does not ensure that a handshake takes
6392 place. SSL_renegotiate_pending() is useful for checking if the
6393 client has followed the request.)
6396 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
6397 By default, clients may request session resumption even during
6398 renegotiation (if session ID contexts permit); with this option,
6399 session resumption is possible only in the first handshake.
6401 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
6402 more bits available for options that should not be part of
6403 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
6406 *) Add some demos for certificate and certificate request creation.
6409 *) Make maximum certificate chain size accepted from the peer application
6410 settable (SSL*_get/set_max_cert_list()), as proposed by
6411 "Douglas E. Engert" <deengert@anl.gov>.
6414 *) Add support for shared libraries for Unixware-7
6415 (Boyd Lynn Gerber <gerberb@zenez.com>).
6418 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
6419 be done prior to destruction. Use this to unload error strings from
6420 ENGINEs that load their own error strings. NB: This adds two new API
6421 functions to "get" and "set" this destroy handler in an ENGINE.
6424 *) Alter all existing ENGINE implementations (except "openssl" and
6425 "openbsd") to dynamically instantiate their own error strings. This
6426 makes them more flexible to be built both as statically-linked ENGINEs
6427 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
6428 Also, add stub code to each that makes building them as self-contained
6429 shared-libraries easier (see README.ENGINE).
6432 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
6433 implementations into applications that are completely implemented in
6434 self-contained shared-libraries. The "dynamic" ENGINE exposes control
6435 commands that can be used to configure what shared-library to load and
6436 to control aspects of the way it is handled. Also, made an update to
6437 the README.ENGINE file that brings its information up-to-date and
6438 provides some information and instructions on the "dynamic" ENGINE
6439 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
6442 *) Make it possible to unload ranges of ERR strings with a new
6443 "ERR_unload_strings" function.
6446 *) Add a copy() function to EVP_MD.
6449 *) Make EVP_MD routines take a context pointer instead of just the
6450 md_data void pointer.
6453 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
6454 that the digest can only process a single chunk of data
6455 (typically because it is provided by a piece of
6456 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
6457 is only going to provide a single chunk of data, and hence the
6458 framework needn't accumulate the data for oneshot drivers.
6461 *) As with "ERR", make it possible to replace the underlying "ex_data"
6462 functions. This change also alters the storage and management of global
6463 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
6464 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
6465 index counters. The API functions that use this state have been changed
6466 to take a "class_index" rather than pointers to the class's local STACK
6467 and counter, and there is now an API function to dynamically create new
6468 classes. This centralisation allows us to (a) plug a lot of the
6469 thread-safety problems that existed, and (b) makes it possible to clean
6470 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
6471 such data would previously have always leaked in application code and
6472 workarounds were in place to make the memory debugging turn a blind eye
6473 to it. Application code that doesn't use this new function will still
6474 leak as before, but their memory debugging output will announce it now
6475 rather than letting it slide.
6477 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
6478 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
6479 has a return value to indicate success or failure.
6482 *) Make it possible to replace the underlying "ERR" functions such that the
6483 global state (2 LHASH tables and 2 locks) is only used by the "default"
6484 implementation. This change also adds two functions to "get" and "set"
6485 the implementation prior to it being automatically set the first time
6486 any other ERR function takes place. Ie. an application can call "get",
6487 pass the return value to a module it has just loaded, and that module
6488 can call its own "set" function using that value. This means the
6489 module's "ERR" operations will use (and modify) the error state in the
6490 application and not in its own statically linked copy of OpenSSL code.
6493 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
6494 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
6495 the operation, and provides a more encapsulated way for external code
6496 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
6497 to use these functions rather than manually incrementing the counts.
6499 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
6502 *) Add EVP test program.
6505 *) Add symmetric cipher support to ENGINE. Expect the API to change!
6508 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
6509 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
6510 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
6511 These allow a CRL to be built without having to access X509_CRL fields
6512 directly. Modify 'ca' application to use new functions.
6515 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
6516 bug workarounds. Rollback attack detection is a security feature.
6517 The problem will only arise on OpenSSL servers when TLSv1 is not
6518 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
6519 Software authors not wanting to support TLSv1 will have special reasons
6520 for their choice and can explicitly enable this option.
6521 [Bodo Moeller, Lutz Jaenicke]
6523 *) Rationalise EVP so it can be extended: don't include a union of
6524 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
6525 (similar to those existing for EVP_CIPHER_CTX).
6530 EVP_MD_CTX_init(&md); /* new function call */
6531 EVP_DigestInit(&md, EVP_sha1());
6532 EVP_DigestUpdate(&md, in, len);
6533 EVP_DigestFinal(&md, out, NULL);
6534 EVP_MD_CTX_cleanup(&md); /* new function call */
6538 *) Make DES key schedule conform to the usual scheme, as well as
6539 correcting its structure. This means that calls to DES functions
6540 now have to pass a pointer to a des_key_schedule instead of a
6541 plain des_key_schedule (which was actually always a pointer
6544 des_key_schedule ks;
6546 des_set_key_checked(..., &ks);
6547 des_ncbc_encrypt(..., &ks, ...);
6549 (Note that a later change renames 'des_...' into 'DES_...'.)
6552 *) Initial reduction of linker bloat: the use of some functions, such as
6553 PEM causes large amounts of unused functions to be linked in due to
6554 poor organisation. For example pem_all.c contains every PEM function
6555 which has a knock on effect of linking in large amounts of (unused)
6556 ASN1 code. Grouping together similar functions and splitting unrelated
6557 functions prevents this.
6560 *) Cleanup of EVP macros.
6563 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
6564 correct _ecb suffix.
6567 *) Add initial OCSP responder support to ocsp application. The
6568 revocation information is handled using the text based index
6569 use by the ca application. The responder can either handle
6570 requests generated internally, supplied in files (for example
6571 via a CGI script) or using an internal minimal server.
6574 *) Add configuration choices to get zlib compression for TLS.
6577 *) Changes to Kerberos SSL for RFC 2712 compliance:
6578 1. Implemented real KerberosWrapper, instead of just using
6579 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
6580 2. Implemented optional authenticator field of KerberosWrapper.
6582 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
6583 and authenticator structs; see crypto/krb5/.
6585 Generalized Kerberos calls to support multiple Kerberos libraries.
6586 [Vern Staats <staatsvr@asc.hpc.mil>,
6587 Jeffrey Altman <jaltman@columbia.edu>
6588 via Richard Levitte]
6590 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
6591 already does with RSA. testdsa.h now has 'priv_key/pub_key'
6592 values for each of the key sizes rather than having just
6593 parameters (and 'speed' generating keys each time).
6596 *) Speed up EVP routines.
6599 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
6600 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
6601 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
6602 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
6604 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
6605 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
6606 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
6609 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
6611 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
6614 *) Added the OS2-EMX target.
6615 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
6617 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
6618 to support NCONF routines in extension code. New function CONF_set_nconf()
6619 to allow functions which take an NCONF to also handle the old LHASH
6620 structure: this means that the old CONF compatible routines can be
6621 retained (in particular wrt extensions) without having to duplicate the
6622 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
6625 *) Enhance the general user interface with mechanisms for inner control
6626 and with possibilities to have yes/no kind of prompts.
6629 *) Change all calls to low level digest routines in the library and
6630 applications to use EVP. Add missing calls to HMAC_cleanup() and
6631 don't assume HMAC_CTX can be copied using memcpy().
6632 [Verdon Walker <VWalker@novell.com>, Steve Henson]
6634 *) Add the possibility to control engines through control names but with
6635 arbitrary arguments instead of just a string.
6636 Change the key loaders to take a UI_METHOD instead of a callback
6637 function pointer. NOTE: this breaks binary compatibility with earlier
6638 versions of OpenSSL [engine].
6639 Adapt the nCipher code for these new conditions and add a card insertion
6643 *) Enhance the general user interface with mechanisms to better support
6644 dialog box interfaces, application-defined prompts, the possibility
6645 to use defaults (for example default passwords from somewhere else)
6646 and interrupts/cancellations.
6649 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
6650 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
6653 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
6654 tidy up some unnecessarily weird code in 'sk_new()').
6655 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
6657 *) Change the key loading routines for ENGINEs to use the same kind
6658 callback (pem_password_cb) as all other routines that need this
6662 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
6663 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
6664 than this minimum value is recommended.
6667 *) New random seeder for OpenVMS, using the system process statistics
6668 that are easily reachable.
6671 *) Windows apparently can't transparently handle global
6672 variables defined in DLLs. Initialisations such as:
6674 const ASN1_ITEM *it = &ASN1_INTEGER_it;
6676 wont compile. This is used by the any applications that need to
6677 declare their own ASN1 modules. This was fixed by adding the option
6678 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
6679 needed for static libraries under Win32.
6682 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
6683 setting of purpose and trust fields. New X509_STORE trust and
6684 purpose functions and tidy up setting in other SSL functions.
6687 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
6688 structure. These are inherited by X509_STORE_CTX when it is
6689 initialised. This allows various defaults to be set in the
6690 X509_STORE structure (such as flags for CRL checking and custom
6691 purpose or trust settings) for functions which only use X509_STORE_CTX
6692 internally such as S/MIME.
6694 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
6695 trust settings if they are not set in X509_STORE. This allows X509_STORE
6696 purposes and trust (in S/MIME for example) to override any set by default.
6698 Add command line options for CRL checking to smime, s_client and s_server
6702 *) Initial CRL based revocation checking. If the CRL checking flag(s)
6703 are set then the CRL is looked up in the X509_STORE structure and
6704 its validity and signature checked, then if the certificate is found
6705 in the CRL the verify fails with a revoked error.
6707 Various new CRL related callbacks added to X509_STORE_CTX structure.
6709 Command line options added to 'verify' application to support this.
6711 This needs some additional work, such as being able to handle multiple
6712 CRLs with different times, extension based lookup (rather than just
6713 by subject name) and ultimately more complete V2 CRL extension
6717 *) Add a general user interface API (crypto/ui/). This is designed
6718 to replace things like des_read_password and friends (backward
6719 compatibility functions using this new API are provided).
6720 The purpose is to remove prompting functions from the DES code
6721 section as well as provide for prompting through dialog boxes in
6722 a window system and the like.
6725 *) Add "ex_data" support to ENGINE so implementations can add state at a
6726 per-structure level rather than having to store it globally.
6729 *) Make it possible for ENGINE structures to be copied when retrieved by
6730 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
6731 This causes the "original" ENGINE structure to act like a template,
6732 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
6733 operational state can be localised to each ENGINE structure, despite the
6734 fact they all share the same "methods". New ENGINE structures returned in
6735 this case have no functional references and the return value is the single
6736 structural reference. This matches the single structural reference returned
6737 by ENGINE_by_id() normally, when it is incremented on the pre-existing
6741 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
6742 needs to match any other type at all we need to manually clear the
6746 *) Changes to the "openssl engine" utility to include;
6747 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
6748 about an ENGINE's available control commands.
6749 - executing control commands from command line arguments using the
6750 '-pre' and '-post' switches. '-post' is only used if '-t' is
6751 specified and the ENGINE is successfully initialised. The syntax for
6752 the individual commands are colon-separated, for example;
6753 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
6756 *) New dynamic control command support for ENGINEs. ENGINEs can now
6757 declare their own commands (numbers), names (strings), descriptions,
6758 and input types for run-time discovery by calling applications. A
6759 subset of these commands are implicitly classed as "executable"
6760 depending on their input type, and only these can be invoked through
6761 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
6762 can be based on user input, config files, etc). The distinction is
6763 that "executable" commands cannot return anything other than a boolean
6764 result and can only support numeric or string input, whereas some
6765 discoverable commands may only be for direct use through
6766 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
6767 pointers, or other custom uses. The "executable" commands are to
6768 support parameterisations of ENGINE behaviour that can be
6769 unambiguously defined by ENGINEs and used consistently across any
6770 OpenSSL-based application. Commands have been added to all the
6771 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
6772 control over shared-library paths without source code alterations.
6775 *) Changed all ENGINE implementations to dynamically allocate their
6776 ENGINEs rather than declaring them statically. Apart from this being
6777 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
6778 this also allows the implementations to compile without using the
6779 internal engine_int.h header.
6782 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
6783 'const' value. Any code that should be able to modify a RAND_METHOD
6784 should already have non-const pointers to it (ie. they should only
6785 modify their own ones).
6788 *) Made a variety of little tweaks to the ENGINE code.
6789 - "atalla" and "ubsec" string definitions were moved from header files
6790 to C code. "nuron" string definitions were placed in variables
6791 rather than hard-coded - allowing parameterisation of these values
6792 later on via ctrl() commands.
6793 - Removed unused "#if 0"'d code.
6794 - Fixed engine list iteration code so it uses ENGINE_free() to release
6795 structural references.
6796 - Constified the RAND_METHOD element of ENGINE structures.
6797 - Constified various get/set functions as appropriate and added
6798 missing functions (including a catch-all ENGINE_cpy that duplicates
6799 all ENGINE values onto a new ENGINE except reference counts/state).
6800 - Removed NULL parameter checks in get/set functions. Setting a method
6801 or function to NULL is a way of cancelling out a previously set
6802 value. Passing a NULL ENGINE parameter is just plain stupid anyway
6803 and doesn't justify the extra error symbols and code.
6804 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
6805 flags from engine_int.h to engine.h.
6806 - Changed prototypes for ENGINE handler functions (init(), finish(),
6807 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
6810 *) Implement binary inversion algorithm for BN_mod_inverse in addition
6811 to the algorithm using long division. The binary algorithm can be
6812 used only if the modulus is odd. On 32-bit systems, it is faster
6813 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
6814 roughly 5-15% for 256-bit moduli), so we use it only for moduli
6815 up to 450 bits. In 64-bit environments, the binary algorithm
6816 appears to be advantageous for much longer moduli; here we use it
6817 for moduli up to 2048 bits.
6820 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
6821 could not support the combine flag in choice fields.
6824 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
6825 extensions from a certificate request to the certificate.
6828 *) Allow multiple 'certopt' and 'nameopt' options to be separated
6829 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
6830 file: this allows the display of the certificate about to be
6831 signed to be customised, to allow certain fields to be included
6832 or excluded and extension details. The old system didn't display
6833 multicharacter strings properly, omitted fields not in the policy
6834 and couldn't display additional details such as extensions.
6837 *) Function EC_POINTs_mul for multiple scalar multiplication
6838 of an arbitrary number of elliptic curve points
6839 \sum scalars[i]*points[i],
6840 optionally including the generator defined for the EC_GROUP:
6841 scalar*generator + \sum scalars[i]*points[i].
6843 EC_POINT_mul is a simple wrapper function for the typical case
6844 that the point list has just one item (besides the optional
6848 *) First EC_METHODs for curves over GF(p):
6850 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
6851 operations and provides various method functions that can also
6852 operate with faster implementations of modular arithmetic.
6854 EC_GFp_mont_method() reuses most functions that are part of
6855 EC_GFp_simple_method, but uses Montgomery arithmetic.
6857 [Bodo Moeller; point addition and point doubling
6858 implementation directly derived from source code provided by
6859 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
6861 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
6862 crypto/ec/ec_lib.c):
6864 Curves are EC_GROUP objects (with an optional group generator)
6865 based on EC_METHODs that are built into the library.
6867 Points are EC_POINT objects based on EC_GROUP objects.
6869 Most of the framework would be able to handle curves over arbitrary
6870 finite fields, but as there are no obvious types for fields other
6871 than GF(p), some functions are limited to that for now.
6874 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
6875 that the file contains a complete HTTP response.
6878 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
6879 change the def and num file printf format specifier from "%-40sXXX"
6880 to "%-39s XXX". The latter will always guarantee a space after the
6881 field while the former will cause them to run together if the field
6882 is 40 of more characters long.
6885 *) Constify the cipher and digest 'method' functions and structures
6886 and modify related functions to take constant EVP_MD and EVP_CIPHER
6890 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
6891 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
6894 *) Modify EVP_Digest*() routines so they now return values. Although the
6895 internal software routines can never fail additional hardware versions
6899 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
6901 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
6902 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
6905 ERR_R_NESTED_ASN1_ERROR
6907 ERR_R_MISSING_ASN1_EOS
6908 were 4 .. 9, conflicting with
6909 ERR_LIB_RSA (= ERR_R_RSA_LIB)
6911 ERR_LIB_PEM (= ERR_R_PEM_LIB).
6912 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
6914 Add new error code 'ERR_R_INTERNAL_ERROR'.
6917 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
6921 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
6922 sets the subject name for a new request or supersedes the
6923 subject name in a given request. Formats that can be parsed are
6924 'CN=Some Name, OU=myOU, C=IT'
6926 'CN=Some Name/OU=myOU/C=IT'.
6928 Add options '-batch' and '-verbose' to 'openssl req'.
6929 [Massimiliano Pala <madwolf@hackmasters.net>]
6931 *) Introduce the possibility to access global variables through
6932 functions on platform were that's the best way to handle exporting
6933 global variables in shared libraries. To enable this functionality,
6934 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
6935 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
6936 is normally done by Configure or something similar).
6938 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
6939 in the source file (foo.c) like this:
6941 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
6942 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
6944 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
6945 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
6947 OPENSSL_DECLARE_GLOBAL(int,foo);
6948 #define foo OPENSSL_GLOBAL_REF(foo)
6949 OPENSSL_DECLARE_GLOBAL(double,bar);
6950 #define bar OPENSSL_GLOBAL_REF(bar)
6952 The #defines are very important, and therefore so is including the
6953 header file everywhere where the defined globals are used.
6955 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
6956 of ASN.1 items, but that structure is a bit different.
6958 The largest change is in util/mkdef.pl which has been enhanced with
6959 better and easier to understand logic to choose which symbols should
6960 go into the Windows .def files as well as a number of fixes and code
6961 cleanup (among others, algorithm keywords are now sorted
6962 lexicographically to avoid constant rewrites).
6965 *) In BN_div() keep a copy of the sign of 'num' before writing the
6966 result to 'rm' because if rm==num the value will be overwritten
6967 and produce the wrong result if 'num' is negative: this caused
6968 problems with BN_mod() and BN_nnmod().
6971 *) Function OCSP_request_verify(). This checks the signature on an
6972 OCSP request and verifies the signer certificate. The signer
6973 certificate is just checked for a generic purpose and OCSP request
6977 *) Add OCSP_check_validity() function to check the validity of OCSP
6978 responses. OCSP responses are prepared in real time and may only
6979 be a few seconds old. Simply checking that the current time lies
6980 between thisUpdate and nextUpdate max reject otherwise valid responses
6981 caused by either OCSP responder or client clock inaccuracy. Instead
6982 we allow thisUpdate and nextUpdate to fall within a certain period of
6983 the current time. The age of the response can also optionally be
6984 checked. Two new options -validity_period and -status_age added to
6988 *) If signature or public key algorithm is unrecognized print out its
6989 OID rather that just UNKNOWN.
6992 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
6993 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
6994 ID to be generated from the issuer certificate alone which can then be
6995 passed to OCSP_id_issuer_cmp().
6998 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
6999 ASN1 modules to export functions returning ASN1_ITEM pointers
7000 instead of the ASN1_ITEM structures themselves. This adds several
7001 new macros which allow the underlying ASN1 function/structure to
7002 be accessed transparently. As a result code should not use ASN1_ITEM
7003 references directly (such as &X509_it) but instead use the relevant
7004 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
7005 use of the new ASN1 code on platforms where exporting structures
7006 is problematical (for example in shared libraries) but exporting
7007 functions returning pointers to structures is not.
7010 *) Add support for overriding the generation of SSL/TLS session IDs.
7011 These callbacks can be registered either in an SSL_CTX or per SSL.
7012 The purpose of this is to allow applications to control, if they wish,
7013 the arbitrary values chosen for use as session IDs, particularly as it
7014 can be useful for session caching in multiple-server environments. A
7015 command-line switch for testing this (and any client code that wishes
7016 to use such a feature) has been added to "s_server".
7017 [Geoff Thorpe, Lutz Jaenicke]
7019 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
7020 of the form '#if defined(...) || defined(...) || ...' and
7021 '#if !defined(...) && !defined(...) && ...'. This also avoids
7022 the growing number of special cases it was previously handling.
7025 *) Make all configuration macros available for application by making
7026 sure they are available in opensslconf.h, by giving them names starting
7027 with "OPENSSL_" to avoid conflicts with other packages and by making
7028 sure e_os2.h will cover all platform-specific cases together with
7030 Additionally, it is now possible to define configuration/platform-
7031 specific names (called "system identities"). In the C code, these
7032 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
7033 macro with the name beginning with "OPENSSL_SYS_", which is determined
7034 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
7038 *) New option -set_serial to 'req' and 'x509' this allows the serial
7039 number to use to be specified on the command line. Previously self
7040 signed certificates were hard coded with serial number 0 and the
7041 CA options of 'x509' had to use a serial number in a file which was
7045 *) New options to 'ca' utility to support V2 CRL entry extensions.
7046 Currently CRL reason, invalidity date and hold instruction are
7047 supported. Add new CRL extensions to V3 code and some new objects.
7050 *) New function EVP_CIPHER_CTX_set_padding() this is used to
7051 disable standard block padding (aka PKCS#5 padding) in the EVP
7052 API, which was previously mandatory. This means that the data is
7053 not padded in any way and so the total length much be a multiple
7054 of the block size, otherwise an error occurs.
7057 *) Initial (incomplete) OCSP SSL support.
7060 *) New function OCSP_parse_url(). This splits up a URL into its host,
7061 port and path components: primarily to parse OCSP URLs. New -url
7062 option to ocsp utility.
7065 *) New nonce behavior. The return value of OCSP_check_nonce() now
7066 reflects the various checks performed. Applications can decide
7067 whether to tolerate certain situations such as an absent nonce
7068 in a response when one was present in a request: the ocsp application
7069 just prints out a warning. New function OCSP_add1_basic_nonce()
7070 this is to allow responders to include a nonce in a response even if
7071 the request is nonce-less.
7074 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
7075 skipped when using openssl x509 multiple times on a single input file,
7076 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
7079 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
7080 set string type: to handle setting ASN1_TIME structures. Fix ca
7081 utility to correctly initialize revocation date of CRLs.
7084 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
7085 the clients preferred ciphersuites and rather use its own preferences.
7086 Should help to work around M$ SGC (Server Gated Cryptography) bug in
7087 Internet Explorer by ensuring unchanged hash method during stepup.
7088 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
7091 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
7092 to aes and add a new 'exist' option to print out symbols that don't
7096 *) Additional options to ocsp utility to allow flags to be set and
7097 additional certificates supplied.
7100 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
7101 OCSP client a number of certificate to only verify the response
7105 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
7106 handle the new API. Currently only ECB, CBC modes supported. Add new
7109 Add TLS AES ciphersuites as described in RFC3268, "Advanced
7110 Encryption Standard (AES) Ciphersuites for Transport Layer
7111 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
7112 not enabled by default and were not part of the "ALL" ciphersuite
7113 alias because they were not yet official; they could be
7114 explicitly requested by specifying the "AESdraft" ciphersuite
7115 group alias. In the final release of OpenSSL 0.9.7, the group
7116 alias is called "AES" and is part of "ALL".)
7117 [Ben Laurie, Steve Henson, Bodo Moeller]
7119 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
7120 request to response.
7123 *) Functions for OCSP responders. OCSP_request_onereq_count(),
7124 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
7125 extract information from a certificate request. OCSP_response_create()
7126 creates a response and optionally adds a basic response structure.
7127 OCSP_basic_add1_status() adds a complete single response to a basic
7128 response and returns the OCSP_SINGLERESP structure just added (to allow
7129 extensions to be included for example). OCSP_basic_add1_cert() adds a
7130 certificate to a basic response and OCSP_basic_sign() signs a basic
7131 response with various flags. New helper functions ASN1_TIME_check()
7132 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
7133 (converts ASN1_TIME to GeneralizedTime).
7136 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
7137 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
7138 structure from a certificate. X509_pubkey_digest() digests the public_key
7139 contents: this is used in various key identifiers.
7142 *) Make sk_sort() tolerate a NULL argument.
7143 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
7145 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
7146 passed by the function are trusted implicitly. If any of them signed the
7147 response then it is assumed to be valid and is not verified.
7150 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
7151 to data. This was previously part of the PKCS7 ASN1 code. This
7152 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
7153 [Steve Henson, reported by Kenneth R. Robinette
7154 <support@securenetterm.com>]
7156 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
7157 routines: without these tracing memory leaks is very painful.
7158 Fix leaks in PKCS12 and PKCS7 routines.
7161 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
7162 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
7163 effectively meant GeneralizedTime would never be used. Now it
7164 is initialised to -1 but X509_time_adj() now has to check the value
7165 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
7166 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
7167 [Steve Henson, reported by Kenneth R. Robinette
7168 <support@securenetterm.com>]
7170 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
7171 result in a zero length in the ASN1_INTEGER structure which was
7172 not consistent with the structure when d2i_ASN1_INTEGER() was used
7173 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
7174 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
7175 where it did not print out a minus for negative ASN1_INTEGER.
7178 *) Add summary printout to ocsp utility. The various functions which
7179 convert status values to strings have been renamed to:
7180 OCSP_response_status_str(), OCSP_cert_status_str() and
7181 OCSP_crl_reason_str() and are no longer static. New options
7182 to verify nonce values and to disable verification. OCSP response
7183 printout format cleaned up.
7186 *) Add additional OCSP certificate checks. These are those specified
7187 in RFC2560. This consists of two separate checks: the CA of the
7188 certificate being checked must either be the OCSP signer certificate
7189 or the issuer of the OCSP signer certificate. In the latter case the
7190 OCSP signer certificate must contain the OCSP signing extended key
7191 usage. This check is performed by attempting to match the OCSP
7192 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
7193 in the OCSP_CERTID structures of the response.
7196 *) Initial OCSP certificate verification added to OCSP_basic_verify()
7197 and related routines. This uses the standard OpenSSL certificate
7198 verify routines to perform initial checks (just CA validity) and
7199 to obtain the certificate chain. Then additional checks will be
7200 performed on the chain. Currently the root CA is checked to see
7201 if it is explicitly trusted for OCSP signing. This is used to set
7202 a root CA as a global signing root: that is any certificate that
7203 chains to that CA is an acceptable OCSP signing certificate.
7206 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
7207 extensions from a separate configuration file.
7208 As when reading extensions from the main configuration file,
7209 the '-extensions ...' option may be used for specifying the
7211 [Massimiliano Pala <madwolf@comune.modena.it>]
7213 *) New OCSP utility. Allows OCSP requests to be generated or
7214 read. The request can be sent to a responder and the output
7215 parsed, outputed or printed in text form. Not complete yet:
7216 still needs to check the OCSP response validity.
7219 *) New subcommands for 'openssl ca':
7220 'openssl ca -status <serial>' prints the status of the cert with
7221 the given serial number (according to the index file).
7222 'openssl ca -updatedb' updates the expiry status of certificates
7224 [Massimiliano Pala <madwolf@comune.modena.it>]
7226 *) New '-newreq-nodes' command option to CA.pl. This is like
7227 '-newreq', but calls 'openssl req' with the '-nodes' option
7228 so that the resulting key is not encrypted.
7229 [Damien Miller <djm@mindrot.org>]
7231 *) New configuration for the GNU Hurd.
7232 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
7234 *) Initial code to implement OCSP basic response verify. This
7235 is currently incomplete. Currently just finds the signer's
7236 certificate and verifies the signature on the response.
7239 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
7240 value of OPENSSLDIR. This is available via the new '-d' option
7241 to 'openssl version', and is also included in 'openssl version -a'.
7244 *) Allowing defining memory allocation callbacks that will be given
7245 file name and line number information in additional arguments
7246 (a const char* and an int). The basic functionality remains, as
7247 well as the original possibility to just replace malloc(),
7248 realloc() and free() by functions that do not know about these
7249 additional arguments. To register and find out the current
7250 settings for extended allocation functions, the following
7251 functions are provided:
7253 CRYPTO_set_mem_ex_functions
7254 CRYPTO_set_locked_mem_ex_functions
7255 CRYPTO_get_mem_ex_functions
7256 CRYPTO_get_locked_mem_ex_functions
7258 These work the same way as CRYPTO_set_mem_functions and friends.
7259 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
7260 extended allocation function is enabled.
7261 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
7262 a conventional allocation function is enabled.
7263 [Richard Levitte, Bodo Moeller]
7265 *) Finish off removing the remaining LHASH function pointer casts.
7266 There should no longer be any prototype-casting required when using
7267 the LHASH abstraction, and any casts that remain are "bugs". See
7268 the callback types and macros at the head of lhash.h for details
7269 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
7272 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
7273 If /dev/[u]random devices are not available or do not return enough
7274 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
7276 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
7277 /etc/entropy will be queried once each in this sequence, quering stops
7278 when enough entropy was collected without querying more sockets.
7281 *) Change the Unix RAND_poll() variant to be able to poll several
7282 random devices, as specified by DEVRANDOM, until a sufficient amount
7283 of data has been collected. We spend at most 10 ms on each file
7284 (select timeout) and read in non-blocking mode. DEVRANDOM now
7285 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
7286 (previously it was just the string "/dev/urandom"), so on typical
7287 platforms the 10 ms delay will never occur.
7288 Also separate out the Unix variant to its own file, rand_unix.c.
7289 For VMS, there's a currently-empty rand_vms.c.
7292 *) Move OCSP client related routines to ocsp_cl.c. These
7293 provide utility functions which an application needing
7294 to issue a request to an OCSP responder and analyse the
7295 response will typically need: as opposed to those which an
7296 OCSP responder itself would need which will be added later.
7298 OCSP_request_sign() signs an OCSP request with an API similar
7299 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
7300 response. OCSP_response_get1_basic() extracts basic response
7301 from response. OCSP_resp_find_status(): finds and extracts status
7302 information from an OCSP_CERTID structure (which will be created
7303 when the request structure is built). These are built from lower
7304 level functions which work on OCSP_SINGLERESP structures but
7305 wont normally be used unless the application wishes to examine
7306 extensions in the OCSP response for example.
7308 Replace nonce routines with a pair of functions.
7309 OCSP_request_add1_nonce() adds a nonce value and optionally
7310 generates a random value. OCSP_check_nonce() checks the
7311 validity of the nonce in an OCSP response.
7314 *) Change function OCSP_request_add() to OCSP_request_add0_id().
7315 This doesn't copy the supplied OCSP_CERTID and avoids the
7316 need to free up the newly created id. Change return type
7317 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
7318 This can then be used to add extensions to the request.
7319 Deleted OCSP_request_new(), since most of its functionality
7320 is now in OCSP_REQUEST_new() (and the case insensitive name
7321 clash) apart from the ability to set the request name which
7322 will be added elsewhere.
7325 *) Update OCSP API. Remove obsolete extensions argument from
7326 various functions. Extensions are now handled using the new
7327 OCSP extension code. New simple OCSP HTTP function which
7328 can be used to send requests and parse the response.
7331 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
7332 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
7333 uses the special reorder version of SET OF to sort the attributes
7334 and reorder them to match the encoded order. This resolves a long
7335 standing problem: a verify on a PKCS7 structure just after signing
7336 it used to fail because the attribute order did not match the
7337 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
7338 it uses the received order. This is necessary to tolerate some broken
7339 software that does not order SET OF. This is handled by encoding
7340 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
7341 to produce the required SET OF.
7344 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
7345 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
7346 files to get correct declarations of the ASN.1 item variables.
7349 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
7350 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
7351 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
7352 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
7353 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
7354 ASN1_ITEM and no wrapper functions.
7357 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
7358 replace the old function pointer based I/O routines. Change most of
7359 the *_d2i_bio() and *_d2i_fp() functions to use these.
7362 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
7363 lines, recognice more "algorithms" that can be deselected, and make
7364 it complain about algorithm deselection that isn't recognised.
7367 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
7368 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
7369 to use new functions. Add NO_ASN1_OLD which can be set to remove
7370 some old style ASN1 functions: this can be used to determine if old
7371 code will still work when these eventually go away.
7374 *) New extension functions for OCSP structures, these follow the
7375 same conventions as certificates and CRLs.
7378 *) New function X509V3_add1_i2d(). This automatically encodes and
7379 adds an extension. Its behaviour can be customised with various
7380 flags to append, replace or delete. Various wrappers added for
7381 certifcates and CRLs.
7384 *) Fix to avoid calling the underlying ASN1 print routine when
7385 an extension cannot be parsed. Correct a typo in the
7386 OCSP_SERVICELOC extension. Tidy up print OCSP format.
7389 *) Make mkdef.pl parse some of the ASN1 macros and add appropriate
7390 entries for variables.
7393 *) Add functionality to apps/openssl.c for detecting locking
7394 problems: As the program is single-threaded, all we have
7395 to do is register a locking callback using an array for
7396 storing which locks are currently held by the program.
7399 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
7400 SSL_get_ex_data_X509_STORE_idx(), which is used in
7401 ssl_verify_cert_chain() and thus can be called at any time
7402 during TLS/SSL handshakes so that thread-safety is essential.
7403 Unfortunately, the ex_data design is not at all suited
7404 for multi-threaded use, so it probably should be abolished.
7407 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
7408 [Broadcom, tweaked and integrated by Geoff Thorpe]
7410 *) Move common extension printing code to new function
7411 X509V3_print_extensions(). Reorganise OCSP print routines and
7412 implement some needed OCSP ASN1 functions. Add OCSP extensions.
7415 *) New function X509_signature_print() to remove duplication in some
7419 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
7420 set (this was treated exactly the same as SET OF previously). This
7421 is used to reorder the STACK representing the structure to match the
7422 encoding. This will be used to get round a problem where a PKCS7
7423 structure which was signed could not be verified because the STACK
7424 order did not reflect the encoded order.
7427 *) Reimplement the OCSP ASN1 module using the new code.
7430 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
7431 for its ASN1 operations. The old style function pointers still exist
7432 for now but they will eventually go away.
7435 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
7436 completely replaces the old ASN1 functionality with a table driven
7437 encoder and decoder which interprets an ASN1_ITEM structure describing
7438 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
7439 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
7440 has also been converted to the new form.
7443 *) Change BN_mod_exp_recp so that negative moduli are tolerated
7444 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
7445 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
7446 for negative moduli.
7449 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
7450 of not touching the result's sign bit.
7453 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
7457 *) Changed the LHASH code to use prototypes for callbacks, and created
7458 macros to declare and implement thin (optionally static) functions
7459 that provide type-safety and avoid function pointer casting for the
7460 type-specific callbacks.
7463 *) Added Kerberos Cipher Suites to be used with TLS, as written in
7465 [Veers Staats <staatsvr@asc.hpc.mil>,
7466 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
7468 *) Reformat the FAQ so the different questions and answers can be divided
7469 in sections depending on the subject.
7472 *) Have the zlib compression code load ZLIB.DLL dynamically under
7476 *) New function BN_mod_sqrt for computing square roots modulo a prime
7477 (using the probabilistic Tonelli-Shanks algorithm unless
7478 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
7479 be handled deterministically).
7480 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
7482 *) Make BN_mod_inverse faster by explicitly handling small quotients
7483 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
7484 512 bits], about 30% for larger ones [1024 or 2048 bits].)
7487 *) New function BN_kronecker.
7490 *) Fix BN_gcd so that it works on negative inputs; the result is
7491 positive unless both parameters are zero.
7492 Previously something reasonably close to an infinite loop was
7493 possible because numbers could be growing instead of shrinking
7494 in the implementation of Euclid's algorithm.
7497 *) Fix BN_is_word() and BN_is_one() macros to take into account the
7498 sign of the number in question.
7500 Fix BN_is_word(a,w) to work correctly for w == 0.
7502 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
7503 because its test if the absolute value of 'a' equals 'w'.
7504 Note that BN_abs_is_word does *not* handle w == 0 reliably;
7505 it exists mostly for use in the implementations of BN_is_zero(),
7506 BN_is_one(), and BN_is_word().
7509 *) New function BN_swap.
7512 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
7513 the exponentiation functions are more likely to produce reasonable
7514 results on negative inputs.
7517 *) Change BN_mod_mul so that the result is always non-negative.
7518 Previously, it could be negative if one of the factors was negative;
7519 I don't think anyone really wanted that behaviour.
7522 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
7523 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
7524 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
7525 and add new functions:
7534 BN_mod_lshift1_quick
7538 These functions always generate non-negative results.
7540 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
7541 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
7543 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
7544 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
7545 be reduced modulo m.
7546 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
7549 The following entry accidentally appeared in the CHANGES file
7550 distributed with OpenSSL 0.9.7. The modifications described in
7551 it do *not* apply to OpenSSL 0.9.7.
7553 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
7554 was actually never needed) and in BN_mul(). The removal in BN_mul()
7555 required a small change in bn_mul_part_recursive() and the addition
7556 of the functions bn_cmp_part_words(), bn_sub_part_words() and
7557 bn_add_part_words(), which do the same thing as bn_cmp_words(),
7558 bn_sub_words() and bn_add_words() except they take arrays with
7563 *) In 'openssl passwd', verify passwords read from the terminal
7564 unless the '-salt' option is used (which usually means that
7565 verification would just waste user's time since the resulting
7566 hash is going to be compared with some given password hash)
7567 or the new '-noverify' option is used.
7569 This is an incompatible change, but it does not affect
7570 non-interactive use of 'openssl passwd' (passwords on the command
7571 line, '-stdin' option, '-in ...' option) and thus should not
7575 *) Remove all references to RSAref, since there's no more need for it.
7578 *) Make DSO load along a path given through an environment variable
7579 (SHLIB_PATH) with shl_load().
7582 *) Constify the ENGINE code as a result of BIGNUM constification.
7583 Also constify the RSA code and most things related to it. In a
7584 few places, most notable in the depth of the ASN.1 code, ugly
7585 casts back to non-const were required (to be solved at a later
7589 *) Make it so the openssl application has all engines loaded by default.
7592 *) Constify the BIGNUM routines a little more.
7595 *) Add the following functions:
7597 ENGINE_load_cswift()
7599 ENGINE_load_atalla()
7601 ENGINE_load_builtin_engines()
7603 That way, an application can itself choose if external engines that
7604 are built-in in OpenSSL shall ever be used or not. The benefit is
7605 that applications won't have to be linked with libdl or other dso
7606 libraries unless it's really needed.
7608 Changed 'openssl engine' to load all engines on demand.
7609 Changed the engine header files to avoid the duplication of some
7610 declarations (they differed!).
7613 *) 'openssl engine' can now list capabilities.
7616 *) Better error reporting in 'openssl engine'.
7619 *) Never call load_dh_param(NULL) in s_server.
7622 *) Add engine application. It can currently list engines by name and
7623 identity, and test if they are actually available.
7626 *) Improve RPM specification file by forcing symbolic linking and making
7627 sure the installed documentation is also owned by root.root.
7628 [Damien Miller <djm@mindrot.org>]
7630 *) Give the OpenSSL applications more possibilities to make use of
7631 keys (public as well as private) handled by engines.
7634 *) Add OCSP code that comes from CertCo.
7637 *) Add VMS support for the Rijndael code.
7640 *) Added untested support for Nuron crypto accelerator.
7643 *) Add support for external cryptographic devices. This code was
7644 previously distributed separately as the "engine" branch.
7645 [Geoff Thorpe, Richard Levitte]
7647 *) Rework the filename-translation in the DSO code. It is now possible to
7648 have far greater control over how a "name" is turned into a filename
7649 depending on the operating environment and any oddities about the
7650 different shared library filenames on each system.
7653 *) Support threads on FreeBSD-elf in Configure.
7656 *) Fix for SHA1 assembly problem with MASM: it produces
7657 warnings about corrupt line number information when assembling
7658 with debugging information. This is caused by the overlapping
7660 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
7663 NCONF_get_number() has no error checking at all. As a replacement,
7664 NCONF_get_number_e() is defined (_e for "error checking") and is
7665 promoted strongly. The old NCONF_get_number is kept around for
7666 binary backward compatibility.
7667 Make it possible for methods to load from something other than a BIO,
7668 by providing a function pointer that is given a name instead of a BIO.
7669 For example, this could be used to load configuration data from an
7673 *) Fix for non blocking accept BIOs. Added new I/O special reason
7674 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
7675 with non blocking I/O was not possible because no retry code was
7676 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
7680 *) Added the beginnings of Rijndael support.
7683 *) Fix for bug in DirectoryString mask setting. Add support for
7684 X509_NAME_print_ex() in 'req' and X509_print_ex() function
7685 to allow certificate printing to more controllable, additional
7686 'certopt' option to 'x509' to allow new printing options to be
7690 *) Clean old EAY MD5 hack from e_os.h.
7693 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
7695 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
7696 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
7697 [Joe Orton, Steve Henson]
7699 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
7701 *) Fix additional bug revealed by the NISCC test suite:
7703 Stop bug triggering large recursion when presented with
7704 certain ASN.1 tags (CVE-2003-0851)
7707 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
7709 *) Fix various bugs revealed by running the NISCC test suite:
7711 Stop out of bounds reads in the ASN1 code when presented with
7712 invalid tags (CVE-2003-0543 and CVE-2003-0544).
7714 If verify callback ignores invalid public key errors don't try to check
7715 certificate signature with the NULL public key.
7719 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
7720 if the server requested one: as stated in TLS 1.0 and SSL 3.0
7724 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
7725 extra data after the compression methods not only for TLS 1.0
7726 but also for SSL 3.0 (as required by the specification).
7727 [Bodo Moeller; problem pointed out by Matthias Loepfe]
7729 *) Change X509_certificate_type() to mark the key as exported/exportable
7730 when it's 512 *bits* long, not 512 bytes.
7733 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
7735 *) Countermeasure against the Klima-Pokorny-Rosa extension of
7736 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
7737 a protocol version number mismatch like a decryption error
7738 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
7741 *) Turn on RSA blinding by default in the default implementation
7742 to avoid a timing attack. Applications that don't want it can call
7743 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
7744 They would be ill-advised to do so in most cases.
7745 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
7747 *) Change RSA blinding code so that it works when the PRNG is not
7748 seeded (in this case, the secret RSA exponent is abused as
7749 an unpredictable seed -- if it is not unpredictable, there
7750 is no point in blinding anyway). Make RSA blinding thread-safe
7751 by remembering the creator's thread ID in rsa->blinding and
7752 having all other threads use local one-time blinding factors
7753 (this requires more computation than sharing rsa->blinding, but
7754 avoids excessive locking; and if an RSA object is not shared
7755 between threads, blinding will still be very fast).
7758 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
7760 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
7761 via timing by performing a MAC computation even if incorrrect
7762 block cipher padding has been found. This is a countermeasure
7763 against active attacks where the attacker has to distinguish
7764 between bad padding and a MAC verification error. (CVE-2003-0078)
7766 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
7767 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
7768 Martin Vuagnoux (EPFL, Ilion)]
7770 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
7772 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
7773 memory from it's contents. This is done with a counter that will
7774 place alternating values in each byte. This can be used to solve
7775 two issues: 1) the removal of calls to memset() by highly optimizing
7776 compilers, and 2) cleansing with other values than 0, since those can
7777 be read through on certain media, for example a swap space on disk.
7780 *) Bugfix: client side session caching did not work with external caching,
7781 because the session->cipher setting was not restored when reloading
7782 from the external cache. This problem was masked, when
7783 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
7784 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
7787 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
7788 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
7789 [Zeev Lieber <zeev-l@yahoo.com>]
7791 *) Undo an undocumented change introduced in 0.9.6e which caused
7792 repeated calls to OpenSSL_add_all_ciphers() and
7793 OpenSSL_add_all_digests() to be ignored, even after calling
7797 *) Change the default configuration reader to deal with last line not
7798 being properly terminated.
7801 *) Change X509_NAME_cmp() so it applies the special rules on handling
7802 DN values that are of type PrintableString, as well as RDNs of type
7803 emailAddress where the value has the type ia5String.
7804 [stefank@valicert.com via Richard Levitte]
7806 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
7807 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
7808 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
7809 the bitwise-OR of the two for use by the majority of applications
7810 wanting this behaviour, and update the docs. The documented
7811 behaviour and actual behaviour were inconsistent and had been
7812 changing anyway, so this is more a bug-fix than a behavioural
7814 [Geoff Thorpe, diagnosed by Nadav Har'El]
7816 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
7817 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
7820 *) Fix initialization code race conditions in
7821 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
7822 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
7823 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
7824 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
7825 ssl2_get_cipher_by_char(),
7826 ssl3_get_cipher_by_char().
7827 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
7829 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
7830 the cached sessions are flushed, as the remove_cb() might use ex_data
7831 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
7832 (see [openssl.org #212]).
7833 [Geoff Thorpe, Lutz Jaenicke]
7835 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
7836 length, instead of the encoding length to d2i_ASN1_OBJECT.
7839 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
7841 *) [In 0.9.6g-engine release:]
7842 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
7843 [Lynn Gazis <lgazis@rainbow.com>]
7845 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
7847 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
7848 and get fix the header length calculation.
7849 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
7850 Alon Kantor <alonk@checkpoint.com> (and others),
7853 *) Use proper error handling instead of 'assertions' in buffer
7854 overflow checks added in 0.9.6e. This prevents DoS (the
7855 assertions could call abort()).
7856 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
7858 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
7860 *) Add various sanity checks to asn1_get_length() to reject
7861 the ASN1 length bytes if they exceed sizeof(long), will appear
7862 negative or the content length exceeds the length of the
7864 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
7866 *) Fix cipher selection routines: ciphers without encryption had no flags
7867 for the cipher strength set and where therefore not handled correctly
7868 by the selection routines (PR #130).
7871 *) Fix EVP_dsa_sha macro.
7875 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
7876 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
7877 that was added in OpenSSL 0.9.6d.
7879 As the countermeasure turned out to be incompatible with some
7880 broken SSL implementations, the new option is part of SSL_OP_ALL.
7881 SSL_OP_ALL is usually employed when compatibility with weird SSL
7882 implementations is desired (e.g. '-bugs' option to 's_client' and
7883 's_server'), so the new option is automatically set in many
7887 *) Changes in security patch:
7889 Changes marked "(CHATS)" were sponsored by the Defense Advanced
7890 Research Projects Agency (DARPA) and Air Force Research Laboratory,
7891 Air Force Materiel Command, USAF, under agreement number
7894 *) Add various sanity checks to asn1_get_length() to reject
7895 the ASN1 length bytes if they exceed sizeof(long), will appear
7896 negative or the content length exceeds the length of the
7897 supplied buffer. (CVE-2002-0659)
7898 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
7900 *) Assertions for various potential buffer overflows, not known to
7902 [Ben Laurie (CHATS)]
7904 *) Various temporary buffers to hold ASCII versions of integers were
7905 too small for 64 bit platforms. (CVE-2002-0655)
7906 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
7908 *) Remote buffer overflow in SSL3 protocol - an attacker could
7909 supply an oversized session ID to a client. (CVE-2002-0656)
7910 [Ben Laurie (CHATS)]
7912 *) Remote buffer overflow in SSL2 protocol - an attacker could
7913 supply an oversized client master key. (CVE-2002-0656)
7914 [Ben Laurie (CHATS)]
7916 Changes between 0.9.6c and 0.9.6d [9 May 2002]
7918 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
7919 encoded as NULL) with id-dsa-with-sha1.
7920 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
7922 *) Check various X509_...() return values in apps/req.c.
7923 [Nils Larsch <nla@trustcenter.de>]
7925 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
7926 an end-of-file condition would erronously be flagged, when the CRLF
7927 was just at the end of a processed block. The bug was discovered when
7928 processing data through a buffering memory BIO handing the data to a
7929 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
7930 <ptsekov@syntrex.com> and Nedelcho Stanev.
7933 *) Implement a countermeasure against a vulnerability recently found
7934 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
7935 before application data chunks to avoid the use of known IVs
7936 with data potentially chosen by the attacker.
7939 *) Fix length checks in ssl3_get_client_hello().
7942 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
7943 to prevent ssl3_read_internal() from incorrectly assuming that
7944 ssl3_read_bytes() found application data while handshake
7945 processing was enabled when in fact s->s3->in_read_app_data was
7946 merely automatically cleared during the initial handshake.
7947 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
7949 *) Fix object definitions for Private and Enterprise: they were not
7950 recognized in their shortname (=lowercase) representation. Extend
7951 obj_dat.pl to issue an error when using undefined keywords instead
7952 of silently ignoring the problem (Svenning Sorensen
7953 <sss@sss.dnsalias.net>).
7956 *) Fix DH_generate_parameters() so that it works for 'non-standard'
7957 generators, i.e. generators other than 2 and 5. (Previously, the
7958 code did not properly initialise the 'add' and 'rem' values to
7959 BN_generate_prime().)
7961 In the new general case, we do not insist that 'generator' is
7962 actually a primitive root: This requirement is rather pointless;
7963 a generator of the order-q subgroup is just as good, if not
7967 *) Map new X509 verification errors to alerts. Discovered and submitted by
7968 Tom Wu <tom@arcot.com>.
7971 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
7972 returning non-zero before the data has been completely received
7973 when using non-blocking I/O.
7974 [Bodo Moeller; problem pointed out by John Hughes]
7976 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
7977 [Ben Laurie, Lutz Jaenicke]
7979 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
7980 Yoram Zahavi <YoramZ@gilian.com>).
7983 *) Add information about CygWin 1.3 and on, and preserve proper
7984 configuration for the versions before that.
7985 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
7987 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
7988 check whether we deal with a copy of a session and do not delete from
7989 the cache in this case. Problem reported by "Izhar Shoshani Levi"
7990 <izhar@checkpoint.com>.
7993 *) Do not store session data into the internal session cache, if it
7994 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
7995 flag is set). Proposed by Aslam <aslam@funk.com>.
7998 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
8002 *) [In 0.9.6d-engine release:]
8003 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
8004 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
8006 *) Add the configuration target linux-s390x.
8007 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
8009 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
8010 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
8011 variable as an indication that a ClientHello message has been
8012 received. As the flag value will be lost between multiple
8013 invocations of ssl3_accept when using non-blocking I/O, the
8014 function may not be aware that a handshake has actually taken
8015 place, thus preventing a new session from being added to the
8018 To avoid this problem, we now set s->new_session to 2 instead of
8019 using a local variable.
8020 [Lutz Jaenicke, Bodo Moeller]
8022 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
8023 if the SSL_R_LENGTH_MISMATCH error is detected.
8024 [Geoff Thorpe, Bodo Moeller]
8026 *) New 'shared_ldflag' column in Configure platform table.
8029 *) Fix EVP_CIPHER_mode macro.
8030 ["Dan S. Camper" <dan@bti.net>]
8032 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
8033 type, we must throw them away by setting rr->length to 0.
8034 [D P Chang <dpc@qualys.com>]
8036 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
8038 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
8039 <Dominikus.Scherkl@biodata.com>. (The previous implementation
8040 worked incorrectly for those cases where range = 10..._2 and
8041 3*range is two bits longer than range.)
8044 *) Only add signing time to PKCS7 structures if it is not already
8048 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
8049 OBJ_ld_ce should be OBJ_id_ce.
8050 Also some ip-pda OIDs in crypto/objects/objects.txt were
8051 incorrect (cf. RFC 3039).
8052 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
8054 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
8055 returns early because it has nothing to do.
8056 [Andy Schneider <andy.schneider@bjss.co.uk>]
8058 *) [In 0.9.6c-engine release:]
8059 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
8060 [Andy Schneider <andy.schneider@bjss.co.uk>]
8062 *) [In 0.9.6c-engine release:]
8063 Add support for Cryptographic Appliance's keyserver technology.
8064 (Use engine 'keyclient')
8065 [Cryptographic Appliances and Geoff Thorpe]
8067 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
8068 is called via tools/c89.sh because arguments have to be
8069 rearranged (all '-L' options must appear before the first object
8071 [Richard Shapiro <rshapiro@abinitio.com>]
8073 *) [In 0.9.6c-engine release:]
8074 Add support for Broadcom crypto accelerator cards, backported
8076 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
8078 *) [In 0.9.6c-engine release:]
8079 Add support for SureWare crypto accelerator cards from
8080 Baltimore Technologies. (Use engine 'sureware')
8081 [Baltimore Technologies and Mark Cox]
8083 *) [In 0.9.6c-engine release:]
8084 Add support for crypto accelerator cards from Accelerated
8085 Encryption Processing, www.aep.ie. (Use engine 'aep')
8086 [AEP Inc. and Mark Cox]
8088 *) Add a configuration entry for gcc on UnixWare.
8089 [Gary Benson <gbenson@redhat.com>]
8091 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
8092 messages are stored in a single piece (fixed-length part and
8093 variable-length part combined) and fix various bugs found on the way.
8096 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
8097 instead. BIO_gethostbyname() does not know what timeouts are
8098 appropriate, so entries would stay in cache even when they have
8100 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
8102 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
8103 faced with a pathologically small ClientHello fragment that does
8104 not contain client_version: Instead of aborting with an error,
8105 simply choose the highest available protocol version (i.e.,
8106 TLS 1.0 unless it is disabled). In practice, ClientHello
8107 messages are never sent like this, but this change gives us
8108 strictly correct behaviour at least for TLS.
8111 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
8112 never resets s->method to s->ctx->method when called from within
8113 one of the SSL handshake functions.
8114 [Bodo Moeller; problem pointed out by Niko Baric]
8116 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
8117 (sent using the client's version number) if client_version is
8118 smaller than the protocol version in use. Also change
8119 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
8120 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
8121 the client will at least see that alert.
8124 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
8128 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
8129 client receives HelloRequest while in a handshake.
8130 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
8132 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
8133 should end in 'break', not 'goto end' which circumvents various
8134 cleanups done in state SSL_ST_OK. But session related stuff
8135 must be disabled for SSL_ST_OK in the case that we just sent a
8138 Also avoid some overhead by not calling ssl_init_wbio_buffer()
8139 before just sending a HelloRequest.
8140 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
8142 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
8143 reveal whether illegal block cipher padding was found or a MAC
8144 verification error occurred. (Neither SSLerr() codes nor alerts
8145 are directly visible to potential attackers, but the information
8146 may leak via logfiles.)
8148 Similar changes are not required for the SSL 2.0 implementation
8149 because the number of padding bytes is sent in clear for SSL 2.0,
8150 and the extra bytes are just ignored. However ssl/s2_pkt.c
8151 failed to verify that the purported number of padding bytes is in
8155 *) Add OpenUNIX-8 support including shared libraries
8156 (Boyd Lynn Gerber <gerberb@zenez.com>).
8159 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
8160 'wristwatch attack' using huge encoding parameters (cf.
8161 James H. Manger's CRYPTO 2001 paper). Note that the
8162 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
8163 encoding parameters and hence was not vulnerable.
8166 *) BN_sqr() bug fix.
8167 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
8169 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
8170 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
8171 followed by modular reduction.
8172 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
8174 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
8175 equivalent based on BN_pseudo_rand() instead of BN_rand().
8178 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
8179 This function was broken, as the check for a new client hello message
8180 to handle SGC did not allow these large messages.
8181 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
8184 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
8187 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
8188 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
8191 *) Rework the configuration and shared library support for Tru64 Unix.
8192 The configuration part makes use of modern compiler features and
8193 still retains old compiler behavior for those that run older versions
8194 of the OS. The shared library support part includes a variant that
8195 uses the RPATH feature, and is available through the special
8196 configuration target "alpha-cc-rpath", which will never be selected
8198 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
8200 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
8201 with the same message size as in ssl3_get_certificate_request().
8202 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
8203 messages might inadvertently be reject as too long.
8204 [Petr Lampa <lampa@fee.vutbr.cz>]
8206 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
8209 *) Modified SSL library such that the verify_callback that has been set
8210 specificly for an SSL object with SSL_set_verify() is actually being
8211 used. Before the change, a verify_callback set with this function was
8212 ignored and the verify_callback() set in the SSL_CTX at the time of
8213 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
8214 to allow the necessary settings.
8217 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
8218 explicitly to NULL, as at least on Solaris 8 this seems not always to be
8219 done automatically (in contradiction to the requirements of the C
8220 standard). This made problems when used from OpenSSH.
8223 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
8224 dh->length and always used
8226 BN_rand_range(priv_key, dh->p).
8228 BN_rand_range() is not necessary for Diffie-Hellman, and this
8229 specific range makes Diffie-Hellman unnecessarily inefficient if
8230 dh->length (recommended exponent length) is much smaller than the
8231 length of dh->p. We could use BN_rand_range() if the order of
8232 the subgroup was stored in the DH structure, but we only have
8237 BN_rand(priv_key, l, ...)
8239 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
8245 RSA_eay_public_encrypt
8246 RSA_eay_private_decrypt
8247 RSA_eay_private_encrypt (signing)
8248 RSA_eay_public_decrypt (signature verification)
8250 (default implementations for RSA_public_encrypt,
8251 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
8252 always reject numbers >= n.
8255 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
8256 to synchronize access to 'locking_thread'. This is necessary on
8257 systems where access to 'locking_thread' (an 'unsigned long'
8258 variable) is not atomic.
8261 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
8262 *before* setting the 'crypto_lock_rand' flag. The previous code had
8263 a race condition if 0 is a valid thread ID.
8264 [Travis Vitek <vitek@roguewave.com>]
8266 *) Add support for shared libraries under Irix.
8267 [Albert Chin-A-Young <china@thewrittenword.com>]
8269 *) Add configuration option to build on Linux on both big-endian and
8271 [Ralf Baechle <ralf@uni-koblenz.de>]
8273 *) Add the possibility to create shared libraries on HP-UX.
8276 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
8278 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
8279 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
8280 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
8281 PRNG state recovery was possible based on the output of
8282 one PRNG request appropriately sized to gain knowledge on
8283 'md' followed by enough consecutive 1-byte PRNG requests
8284 to traverse all of 'state'.
8286 1. When updating 'md_local' (the current thread's copy of 'md')
8287 during PRNG output generation, hash all of the previous
8288 'md_local' value, not just the half used for PRNG output.
8290 2. Make the number of bytes from 'state' included into the hash
8291 independent from the number of PRNG bytes requested.
8293 The first measure alone would be sufficient to avoid
8294 Markku-Juhani's attack. (Actually it had never occurred
8295 to me that the half of 'md_local' used for chaining was the
8296 half from which PRNG output bytes were taken -- I had always
8297 assumed that the secret half would be used.) The second
8298 measure makes sure that additional data from 'state' is never
8299 mixed into 'md_local' in small portions; this heuristically
8300 further strengthens the PRNG.
8303 *) Fix crypto/bn/asm/mips3.s.
8306 *) When only the key is given to "enc", the IV is undefined. Print out
8307 an error message in this case.
8310 *) Handle special case when X509_NAME is empty in X509 printing routines.
8313 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
8314 positive and less than q.
8317 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
8318 used: it isn't thread safe and the add_lock_callback should handle
8320 [Paul Rose <Paul.Rose@bridge.com>]
8322 *) Verify that incoming data obeys the block size in
8323 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
8327 [Ulf Möller, Bodo Möller]
8329 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
8330 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
8331 when fixing the server behaviour for backwards-compatible 'client
8332 hello' messages. (Note that the attack is impractical against
8333 SSL 3.0 and TLS 1.0 anyway because length and version checking
8334 means that the probability of guessing a valid ciphertext is
8335 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
8338 Before 0.9.5, the countermeasure (hide the error by generating a
8339 random 'decryption result') did not work properly because
8340 ERR_clear_error() was missing, meaning that SSL_get_error() would
8341 detect the supposedly ignored error.
8343 Both problems are now fixed.
8346 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
8347 (previously it was 1024).
8350 *) Fix for compatibility mode trust settings: ignore trust settings
8351 unless some valid trust or reject settings are present.
8354 *) Fix for blowfish EVP: its a variable length cipher.
8357 *) Fix various bugs related to DSA S/MIME verification. Handle missing
8358 parameters in DSA public key structures and return an error in the
8359 DSA routines if parameters are absent.
8362 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
8363 in the current directory if neither $RANDFILE nor $HOME was set.
8364 RAND_file_name() in 0.9.6a returned NULL in this case. This has
8365 caused some confusion to Windows users who haven't defined $HOME.
8366 Thus RAND_file_name() is changed again: e_os.h can define a
8367 DEFAULT_HOME, which will be used if $HOME is not set.
8368 For Windows, we use "C:"; on other platforms, we still require
8369 environment variables.
8371 *) Move 'if (!initialized) RAND_poll()' into regions protected by
8372 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
8373 having multiple threads call RAND_poll() concurrently.
8376 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
8377 combination of a flag and a thread ID variable.
8378 Otherwise while one thread is in ssleay_rand_bytes (which sets the
8379 flag), *other* threads can enter ssleay_add_bytes without obeying
8380 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
8381 that they do not hold after the first thread unsets add_do_not_lock).
8384 *) Change bctest again: '-x' expressions are not available in all
8388 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
8390 *) Fix a couple of memory leaks in PKCS7_dataDecode()
8391 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
8393 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
8394 the default extension for executables, if any. Also, make the perl
8395 scripts that use symlink() to test if it really exists and use "cp"
8396 if it doesn't. All this made OpenSSL compilable and installable in
8400 *) Fix for asn1_GetSequence() for indefinite length constructed data.
8401 If SEQUENCE is length is indefinite just set c->slen to the total
8402 amount of data available.
8403 [Steve Henson, reported by shige@FreeBSD.org]
8404 [This change does not apply to 0.9.7.]
8406 *) Change bctest to avoid here-documents inside command substitution
8407 (workaround for FreeBSD /bin/sh bug).
8408 For compatibility with Ultrix, avoid shell functions (introduced
8409 in the bctest version that searches along $PATH).
8412 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
8413 with des_encrypt() defined on some operating systems, like Solaris
8417 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
8418 On the Importance of Eliminating Errors in Cryptographic
8419 Computations, J. Cryptology 14 (2001) 2, 101-119,
8420 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
8423 *) MIPS assembler BIGNUM division bug fix.
8426 *) Disabled incorrect Alpha assembler code.
8429 *) Fix PKCS#7 decode routines so they correctly update the length
8430 after reading an EOC for the EXPLICIT tag.
8432 [This change does not apply to 0.9.7.]
8434 *) Fix bug in PKCS#12 key generation routines. This was triggered
8435 if a 3DES key was generated with a 0 initial byte. Include
8436 PKCS12_BROKEN_KEYGEN compilation option to retain the old
8437 (but broken) behaviour.
8440 *) Enhance bctest to search for a working bc along $PATH and print
8442 [Tim Rice <tim@multitalents.net> via Richard Levitte]
8444 *) Fix memory leaks in err.c: free err_data string if necessary;
8445 don't write to the wrong index in ERR_set_error_data.
8448 *) Implement ssl23_peek (analogous to ssl23_read), which previously
8452 *) Replace rdtsc with _emit statements for VC++ version 5.
8453 [Jeremy Cooper <jeremy@baymoo.org>]
8455 *) Make it possible to reuse SSLv2 sessions.
8458 *) In copy_email() check for >= 0 as a return value for
8459 X509_NAME_get_index_by_NID() since 0 is a valid index.
8460 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
8462 *) Avoid coredump with unsupported or invalid public keys by checking if
8463 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
8464 PKCS7_verify() fails with non detached data.
8467 *) Don't use getenv in library functions when run as setuid/setgid.
8468 New function OPENSSL_issetugid().
8471 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
8472 due to incorrect handling of multi-threading:
8474 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
8476 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
8478 3. Count how many times MemCheck_off() has been called so that
8479 nested use can be treated correctly. This also avoids
8480 inband-signalling in the previous code (which relied on the
8481 assumption that thread ID 0 is impossible).
8484 *) Add "-rand" option also to s_client and s_server.
8487 *) Fix CPU detection on Irix 6.x.
8488 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
8489 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
8491 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
8494 [This change does not apply to 0.9.7.]
8496 *) Use the cached encoding of an X509_NAME structure rather than
8497 copying it. This is apparently the reason for the libsafe "errors"
8498 but the code is actually correct.
8501 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
8502 Bleichenbacher's DSA attack.
8503 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
8504 to be set and top=0 forces the highest bit to be set; top=-1 is new
8505 and leaves the highest bit random.
8506 [Ulf Moeller, Bodo Moeller]
8508 *) In the NCONF_...-based implementations for CONF_... queries
8509 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
8510 a temporary CONF structure with the data component set to NULL
8511 (which gives segmentation faults in lh_retrieve).
8512 Instead, use NULL for the CONF pointer in CONF_get_string and
8513 CONF_get_number (which may use environment variables) and directly
8514 return NULL from CONF_get_section.
8517 *) Fix potential buffer overrun for EBCDIC.
8520 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
8521 keyUsage if basicConstraints absent for a CA.
8524 *) Make SMIME_write_PKCS7() write mail header values with a format that
8525 is more generally accepted (no spaces before the semicolon), since
8526 some programs can't parse those values properly otherwise. Also make
8527 sure BIO's that break lines after each write do not create invalid
8531 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
8532 macros previously used would not encode an empty SEQUENCE OF
8533 and break the signature.
8535 [This change does not apply to 0.9.7.]
8537 *) Zero the premaster secret after deriving the master secret in
8541 *) Add some EVP_add_digest_alias registrations (as found in
8542 OpenSSL_add_all_digests()) to SSL_library_init()
8543 aka OpenSSL_add_ssl_algorithms(). This provides improved
8544 compatibility with peers using X.509 certificates
8545 with unconventional AlgorithmIdentifier OIDs.
8548 *) Fix for Irix with NO_ASM.
8549 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
8551 *) ./config script fixes.
8552 [Ulf Moeller, Richard Levitte]
8554 *) Fix 'openssl passwd -1'.
8557 *) Change PKCS12_key_gen_asc() so it can cope with non null
8558 terminated strings whose length is passed in the passlen
8559 parameter, for example from PEM callbacks. This was done
8560 by adding an extra length parameter to asc2uni().
8561 [Steve Henson, reported by <oddissey@samsung.co.kr>]
8563 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
8564 call failed, free the DSA structure.
8567 *) Fix to uni2asc() to cope with zero length Unicode strings.
8568 These are present in some PKCS#12 files.
8571 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
8572 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
8573 when writing a 32767 byte record.
8574 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
8576 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
8577 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
8579 (RSA objects have a reference count access to which is protected
8580 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
8581 so they are meant to be shared between threads.)
8582 [Bodo Moeller, Geoff Thorpe; original patch submitted by
8583 "Reddie, Steven" <Steven.Reddie@ca.com>]
8585 *) Fix a deadlock in CRYPTO_mem_leaks().
8588 *) Use better test patterns in bntest.
8591 *) rand_win.c fix for Borland C.
8594 *) BN_rshift bugfix for n == 0.
8597 *) Add a 'bctest' script that checks for some known 'bc' bugs
8598 so that 'make test' does not abort just because 'bc' is broken.
8601 *) Store verify_result within SSL_SESSION also for client side to
8602 avoid potential security hole. (Re-used sessions on the client side
8603 always resulted in verify_result==X509_V_OK, not using the original
8604 result of the server certificate verification.)
8607 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
8608 SSL3_RT_APPLICATION_DATA, return 0.
8609 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
8613 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
8614 releases, have been re-implemented by renaming the previous
8615 implementations of ssl2_read and ssl3_read to ssl2_read_internal
8616 and ssl3_read_internal, respectively, and adding 'peek' parameters
8617 to them. The new ssl[23]_{read,peek} functions are calls to
8618 ssl[23]_read_internal with the 'peek' flag set appropriately.
8619 A 'peek' parameter has also been added to ssl3_read_bytes, which
8620 does the actual work for ssl3_read_internal.
8623 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
8624 the method-specific "init()" handler. Also clean up ex_data after
8625 calling the method-specific "finish()" handler. Previously, this was
8626 happening the other way round.
8629 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
8630 The previous value, 12, was not always sufficient for BN_mod_exp().
8633 *) Make sure that shared libraries get the internal name engine with
8634 the full version number and not just 0. This should mark the
8635 shared libraries as not backward compatible. Of course, this should
8636 be changed again when we can guarantee backward binary compatibility.
8639 *) Fix typo in get_cert_by_subject() in by_dir.c
8640 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
8642 *) Rework the system to generate shared libraries:
8644 - Make note of the expected extension for the shared libraries and
8645 if there is a need for symbolic links from for example libcrypto.so.0
8646 to libcrypto.so.0.9.7. There is extended info in Configure for
8649 - Make as few rebuilds of the shared libraries as possible.
8651 - Still avoid linking the OpenSSL programs with the shared libraries.
8653 - When installing, install the shared libraries separately from the
8657 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
8659 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
8660 and not in SSL_clear because the latter is also used by the
8661 accept/connect functions; previously, the settings made by
8662 SSL_set_read_ahead would be lost during the handshake.
8663 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
8665 *) Correct util/mkdef.pl to be selective about disabled algorithms.
8666 Previously, it would create entries for disabled algorithms no
8670 *) Added several new manual pages for SSL_* function.
8673 Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
8675 *) In ssl23_get_client_hello, generate an error message when faced
8676 with an initial SSL 3.0/TLS record that is too small to contain the
8677 first two bytes of the ClientHello message, i.e. client_version.
8678 (Note that this is a pathologic case that probably has never happened
8679 in real life.) The previous approach was to use the version number
8680 from the record header as a substitute; but our protocol choice
8681 should not depend on that one because it is not authenticated
8682 by the Finished messages.
8685 *) More robust randomness gathering functions for Windows.
8686 [Jeffrey Altman <jaltman@columbia.edu>]
8688 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
8689 not set then we don't setup the error code for issuer check errors
8690 to avoid possibly overwriting other errors which the callback does
8691 handle. If an application does set the flag then we assume it knows
8692 what it is doing and can handle the new informational codes
8696 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
8697 a general "ANY" type, as such it should be able to decode anything
8698 including tagged types. However it didn't check the class so it would
8699 wrongly interpret tagged types in the same way as their universal
8700 counterpart and unknown types were just rejected. Changed so that the
8701 tagged and unknown types are handled in the same way as a SEQUENCE:
8702 that is the encoding is stored intact. There is also a new type
8703 "V_ASN1_OTHER" which is used when the class is not universal, in this
8704 case we have no idea what the actual type is so we just lump them all
8708 *) On VMS, stdout may very well lead to a file that is written to
8709 in a record-oriented fashion. That means that every write() will
8710 write a separate record, which will be read separately by the
8711 programs trying to read from it. This can be very confusing.
8713 The solution is to put a BIO filter in the way that will buffer
8714 text until a linefeed is reached, and then write everything a
8715 line at a time, so every record written will be an actual line,
8716 not chunks of lines and not (usually doesn't happen, but I've
8717 seen it once) several lines in one record. BIO_f_linebuffer() is
8720 Currently, it's a VMS-only method, because that's where it has
8721 been tested well enough.
8724 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
8725 it can return incorrect results.
8726 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
8727 but it was in 0.9.6-beta[12].)
8730 *) Disable the check for content being present when verifying detached
8731 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
8732 include zero length content when signing messages.
8735 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
8736 BIO_ctrl (for BIO pairs).
8739 *) Add DSO method for VMS.
8742 *) Bug fix: Montgomery multiplication could produce results with the
8746 *) Add RPM specification openssl.spec and modify it to build three
8747 packages. The default package contains applications, application
8748 documentation and run-time libraries. The devel package contains
8749 include files, static libraries and function documentation. The
8750 doc package contains the contents of the doc directory. The original
8751 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
8754 *) Add a large number of documentation files for many SSL routines.
8755 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
8757 *) Add a configuration entry for Sony News 4.
8758 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
8760 *) Don't set the two most significant bits to one when generating a
8761 random number < q in the DSA library.
8764 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
8765 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
8766 the underlying transport is blocking) if a handshake took place.
8767 (The default behaviour is needed by applications such as s_client
8768 and s_server that use select() to determine when to use SSL_read;
8769 but for applications that know in advance when to expect data, it
8770 just makes things more complicated.)
8773 *) Add RAND_egd_bytes(), which gives control over the number of bytes read
8777 *) Add a few more EBCDIC conditionals that make `req' and `x509'
8778 work better on such systems.
8779 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
8781 *) Add two demo programs for PKCS12_parse() and PKCS12_create().
8782 Update PKCS12_parse() so it copies the friendlyName and the
8783 keyid to the certificates aux info.
8786 *) Fix bug in PKCS7_verify() which caused an infinite loop
8787 if there was more than one signature.
8788 [Sven Uszpelkat <su@celocom.de>]
8790 *) Major change in util/mkdef.pl to include extra information
8791 about each symbol, as well as presenting variables as well
8792 as functions. This change means that there's n more need
8793 to rebuild the .num files when some algorithms are excluded.
8796 *) Allow the verify time to be set by an application,
8797 rather than always using the current time.
8800 *) Phase 2 verify code reorganisation. The certificate
8801 verify code now looks up an issuer certificate by a
8802 number of criteria: subject name, authority key id
8803 and key usage. It also verifies self signed certificates
8804 by the same criteria. The main comparison function is
8805 X509_check_issued() which performs these checks.
8807 Lot of changes were necessary in order to support this
8808 without completely rewriting the lookup code.
8810 Authority and subject key identifier are now cached.
8812 The LHASH 'certs' is X509_STORE has now been replaced
8813 by a STACK_OF(X509_OBJECT). This is mainly because an
8814 LHASH can't store or retrieve multiple objects with
8815 the same hash value.
8817 As a result various functions (which were all internal
8818 use only) have changed to handle the new X509_STORE
8819 structure. This will break anything that messed round
8820 with X509_STORE internally.
8822 The functions X509_STORE_add_cert() now checks for an
8823 exact match, rather than just subject name.
8825 The X509_STORE API doesn't directly support the retrieval
8826 of multiple certificates matching a given criteria, however
8827 this can be worked round by performing a lookup first
8828 (which will fill the cache with candidate certificates)
8829 and then examining the cache for matches. This is probably
8830 the best we can do without throwing out X509_LOOKUP
8831 entirely (maybe later...).
8833 The X509_VERIFY_CTX structure has been enhanced considerably.
8835 All certificate lookup operations now go via a get_issuer()
8836 callback. Although this currently uses an X509_STORE it
8837 can be replaced by custom lookups. This is a simple way
8838 to bypass the X509_STORE hackery necessary to make this
8839 work and makes it possible to use more efficient techniques
8840 in future. A very simple version which uses a simple
8841 STACK for its trusted certificate store is also provided
8842 using X509_STORE_CTX_trusted_stack().
8844 The verify_cb() and verify() callbacks now have equivalents
8845 in the X509_STORE_CTX structure.
8847 X509_STORE_CTX also has a 'flags' field which can be used
8848 to customise the verify behaviour.
8851 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
8852 excludes S/MIME capabilities.
8855 *) When a certificate request is read in keep a copy of the
8856 original encoding of the signed data and use it when outputing
8857 again. Signatures then use the original encoding rather than
8858 a decoded, encoded version which may cause problems if the
8859 request is improperly encoded.
8862 *) For consistency with other BIO_puts implementations, call
8863 buffer_write(b, ...) directly in buffer_puts instead of calling
8866 In BIO_puts, increment b->num_write as in BIO_write.
8867 [Peter.Sylvester@EdelWeb.fr]
8869 *) Fix BN_mul_word for the case where the word is 0. (We have to use
8870 BN_zero, we may not return a BIGNUM with an array consisting of
8874 *) Avoid calling abort() from within the library when problems are
8875 detected, except if preprocessor symbols have been defined
8876 (such as REF_CHECK, BN_DEBUG etc.).
8879 *) New openssl application 'rsautl'. This utility can be
8880 used for low level RSA operations. DER public key
8881 BIO/fp routines also added.
8884 *) New Configure entry and patches for compiling on QNX 4.
8885 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
8887 *) A demo state-machine implementation was sponsored by
8888 Nuron (http://www.nuron.com/) and is now available in
8889 demos/state_machine.
8892 *) New options added to the 'dgst' utility for signature
8893 generation and verification.
8896 *) Unrecognized PKCS#7 content types are now handled via a
8897 catch all ASN1_TYPE structure. This allows unsupported
8898 types to be stored as a "blob" and an application can
8899 encode and decode it manually.
8902 *) Fix various signed/unsigned issues to make a_strex.c
8904 [Oscar Jacobsson <oscar.jacobsson@celocom.com>]
8906 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
8907 length if passed a buffer. ASN1_INTEGER_to_BN failed
8908 if passed a NULL BN and its argument was negative.
8909 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
8911 *) Modification to PKCS#7 encoding routines to output definite
8912 length encoding. Since currently the whole structures are in
8913 memory there's not real point in using indefinite length
8914 constructed encoding. However if OpenSSL is compiled with
8915 the flag PKCS7_INDEFINITE_ENCODING the old form is used.
8918 *) Added BIO_vprintf() and BIO_vsnprintf().
8921 *) Added more prefixes to parse for in the the strings written
8922 through a logging bio, to cover all the levels that are available
8923 through syslog. The prefixes are now:
8925 PANIC, EMERG, EMR => LOG_EMERG
8926 ALERT, ALR => LOG_ALERT
8927 CRIT, CRI => LOG_CRIT
8928 ERROR, ERR => LOG_ERR
8929 WARNING, WARN, WAR => LOG_WARNING
8930 NOTICE, NOTE, NOT => LOG_NOTICE
8931 INFO, INF => LOG_INFO
8932 DEBUG, DBG => LOG_DEBUG
8934 and as before, if none of those prefixes are present at the
8935 beginning of the string, LOG_ERR is chosen.
8937 On Win32, the LOG_* levels are mapped according to this:
8939 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
8940 LOG_WARNING => EVENTLOG_WARNING_TYPE
8941 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
8945 *) Made it possible to reconfigure with just the configuration
8946 argument "reconf" or "reconfigure". The command line arguments
8947 are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
8948 and are retrieved from there when reconfiguring.
8952 [Assar Westerlund <assar@sics.se>, Richard Levitte]
8954 *) Add the arguments -CAfile and -CApath to the pkcs12 utility.
8957 *) The obj_dat.pl script was messing up the sorting of object
8958 names. The reason was that it compared the quoted version
8959 of strings as a result "OCSP" > "OCSP Signing" because
8960 " > SPACE. Changed script to store unquoted versions of
8961 names and add quotes on output. It was also omitting some
8962 names from the lookup table if they were given a default
8963 value (that is if SN is missing it is given the same
8964 value as LN and vice versa), these are now added on the
8965 grounds that if an object has a name we should be able to
8966 look it up. Finally added warning output when duplicate
8967 short or long names are found.
8970 *) Changes needed for Tandem NSK.
8971 [Scott Uroff <scott@xypro.com>]
8973 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
8974 RSA_padding_check_SSLv23(), special padding was never detected
8975 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
8976 version rollback attacks was not effective.
8978 In s23_clnt.c, don't use special rollback-attack detection padding
8979 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
8980 client; similarly, in s23_srvr.c, don't do the rollback check if
8981 SSL 2.0 is the only protocol enabled in the server.
8984 *) Make it possible to get hexdumps of unprintable data with 'openssl
8985 asn1parse'. By implication, the functions ASN1_parse_dump() and
8986 BIO_dump_indent() are added.
8989 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
8990 these print out strings and name structures based on various
8991 flags including RFC2253 support and proper handling of
8992 multibyte characters. Added options to the 'x509' utility
8993 to allow the various flags to be set.
8996 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
8997 Also change the functions X509_cmp_current_time() and
8998 X509_gmtime_adj() work with an ASN1_TIME structure,
8999 this will enable certificates using GeneralizedTime in validity
9000 dates to be checked.
9003 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid
9004 negative public key encodings) on by default,
9005 NO_NEG_PUBKEY_BUG can be set to disable it.
9008 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
9009 content octets. An i2c_ASN1_OBJECT is unnecessary because
9010 the encoding can be trivially obtained from the structure.
9013 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
9014 not read locks (CRYPTO_r_[un]lock).
9017 *) A first attempt at creating official support for shared
9018 libraries through configuration. I've kept it so the
9019 default is static libraries only, and the OpenSSL programs
9020 are always statically linked for now, but there are
9021 preparations for dynamic linking in place.
9022 This has been tested on Linux and Tru64.
9025 *) Randomness polling function for Win9x, as described in:
9026 Peter Gutmann, Software Generation of Practically Strong
9030 *) Fix so PRNG is seeded in req if using an already existing
9034 *) New options to smime application. -inform and -outform
9035 allow alternative formats for the S/MIME message including
9036 PEM and DER. The -content option allows the content to be
9037 specified separately. This should allow things like Netscape
9038 form signing output easier to verify.
9041 *) Fix the ASN1 encoding of tags using the 'long form'.
9044 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
9045 STRING types. These convert content octets to and from the
9046 underlying type. The actual tag and length octets are
9047 already assumed to have been read in and checked. These
9048 are needed because all other string types have virtually
9049 identical handling apart from the tag. By having versions
9050 of the ASN1 functions that just operate on content octets
9051 IMPLICIT tagging can be handled properly. It also allows
9052 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
9053 and ASN1_INTEGER are identical apart from the tag.
9056 *) Change the handling of OID objects as follows:
9058 - New object identifiers are inserted in objects.txt, following
9059 the syntax given in objects.README.
9060 - objects.pl is used to process obj_mac.num and create a new
9062 - obj_dat.pl is used to create a new obj_dat.h, using the data in
9065 This is currently kind of a hack, and the perl code in objects.pl
9066 isn't very elegant, but it works as I intended. The simplest way
9067 to check that it worked correctly is to look in obj_dat.h and
9068 check the array nid_objs and make sure the objects haven't moved
9069 around (this is important!). Additions are OK, as well as
9070 consistent name changes.
9073 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
9076 *) Addition of the command line parameter '-rand file' to 'openssl req'.
9077 The given file adds to whatever has already been seeded into the
9078 random pool through the RANDFILE configuration file option or
9079 environment variable, or the default random state file.
9082 *) mkstack.pl now sorts each macro group into lexical order.
9083 Previously the output order depended on the order the files
9084 appeared in the directory, resulting in needless rewriting
9088 *) Patches to make OpenSSL compile under Win32 again. Mostly
9089 work arounds for the VC++ problem that it treats func() as
9090 func(void). Also stripped out the parts of mkdef.pl that
9091 added extra typesafe functions: these no longer exist.
9094 *) Reorganisation of the stack code. The macros are now all
9095 collected in safestack.h . Each macro is defined in terms of
9096 a "stack macro" of the form SKM_<name>(type, a, b). The
9097 DEBUG_SAFESTACK is now handled in terms of function casts,
9098 this has the advantage of retaining type safety without the
9099 use of additional functions. If DEBUG_SAFESTACK is not defined
9100 then the non typesafe macros are used instead. Also modified the
9101 mkstack.pl script to handle the new form. Needs testing to see
9102 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
9103 the default if no major problems. Similar behaviour for ASN1_SET_OF
9104 and PKCS12_STACK_OF.
9107 *) When some versions of IIS use the 'NET' form of private key the
9108 key derivation algorithm is different. Normally MD5(password) is
9109 used as a 128 bit RC4 key. In the modified case
9110 MD5(MD5(password) + "SGCKEYSALT") is used instead. Added some
9111 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
9112 as the old Netscape_RSA functions except they have an additional
9113 'sgckey' parameter which uses the modified algorithm. Also added
9114 an -sgckey command line option to the rsa utility. Thanks to
9115 Adrian Peck <bertie@ncipher.com> for posting details of the modified
9116 algorithm to openssl-dev.
9119 *) The evp_local.h macros were using 'c.##kname' which resulted in
9120 invalid expansion on some systems (SCO 5.0.5 for example).
9121 Corrected to 'c.kname'.
9122 [Phillip Porch <root@theporch.com>]
9124 *) New X509_get1_email() and X509_REQ_get1_email() functions that return
9125 a STACK of email addresses from a certificate or request, these look
9126 in the subject name and the subject alternative name extensions and
9127 omit any duplicate addresses.
9130 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows.
9131 This makes DSA verification about 2 % faster.
9134 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
9135 (meaning that now 2^5 values will be precomputed, which is only 4 KB
9136 plus overhead for 1024 bit moduli).
9137 This makes exponentiations about 0.5 % faster for 1024 bit
9138 exponents (as measured by "openssl speed rsa2048").
9141 *) Rename memory handling macros to avoid conflicts with other
9143 Malloc => OPENSSL_malloc
9144 Malloc_locked => OPENSSL_malloc_locked
9145 Realloc => OPENSSL_realloc
9146 Free => OPENSSL_free
9149 *) New function BN_mod_exp_mont_word for small bases (roughly 15%
9150 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
9153 *) CygWin32 support.
9154 [John Jarvie <jjarvie@newsguy.com>]
9156 *) The type-safe stack code has been rejigged. It is now only compiled
9157 in when OpenSSL is configured with the DEBUG_SAFESTACK option and
9158 by default all type-specific stack functions are "#define"d back to
9159 standard stack functions. This results in more streamlined output
9160 but retains the type-safety checking possibilities of the original
9164 *) The STACK code has been cleaned up, and certain type declarations
9165 that didn't make a lot of sense have been brought in line. This has
9166 also involved a cleanup of sorts in safestack.h to more correctly
9167 map type-safe stack functions onto their plain stack counterparts.
9168 This work has also resulted in a variety of "const"ifications of
9169 lots of the code, especially "_cmp" operations which should normally
9170 be prototyped with "const" parameters anyway.
9173 *) When generating bytes for the first time in md_rand.c, 'stir the pool'
9174 by seeding with STATE_SIZE dummy bytes (with zero entropy count).
9175 (The PRNG state consists of two parts, the large pool 'state' and 'md',
9176 where all of 'md' is used each time the PRNG is used, but 'state'
9177 is used only indexed by a cyclic counter. As entropy may not be
9178 well distributed from the beginning, 'md' is important as a
9179 chaining variable. However, the output function chains only half
9180 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
9181 all of 'md', and seeding with STATE_SIZE dummy bytes will result
9182 in all of 'state' being rewritten, with the new values depending
9183 on virtually all of 'md'. This overcomes the 80 bit limitation.)
9186 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
9187 the handshake is continued after ssl_verify_cert_chain();
9188 otherwise, if SSL_VERIFY_NONE is set, remaining error codes
9189 can lead to 'unexplainable' connection aborts later.
9190 [Bodo Moeller; problem tracked down by Lutz Jaenicke]
9192 *) Major EVP API cipher revision.
9193 Add hooks for extra EVP features. This allows various cipher
9194 parameters to be set in the EVP interface. Support added for variable
9195 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
9196 setting of RC2 and RC5 parameters.
9198 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
9201 Remove lots of duplicated code from the EVP library. For example *every*
9202 cipher init() function handles the 'iv' in the same way according to the
9203 cipher mode. They also all do nothing if the 'key' parameter is NULL and
9204 for CFB and OFB modes they zero ctx->num.
9206 New functionality allows removal of S/MIME code RC2 hack.
9208 Most of the routines have the same form and so can be declared in terms
9211 By shifting this to the top level EVP_CipherInit() it can be removed from
9212 all individual ciphers. If the cipher wants to handle IVs or keys
9213 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
9216 Change lots of functions like EVP_EncryptUpdate() to now return a
9217 value: although software versions of the algorithms cannot fail
9218 any installed hardware versions can.
9221 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
9222 this option is set, tolerate broken clients that send the negotiated
9223 protocol version number instead of the requested protocol version
9227 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag;
9228 i.e. non-zero for export ciphersuites, zero otherwise.
9229 Previous versions had this flag inverted, inconsistent with
9230 rsa_tmp_cb (..._TMP_RSA_CB).
9231 [Bodo Moeller; problem reported by Amit Chopra]
9233 *) Add missing DSA library text string. Work around for some IIS
9234 key files with invalid SEQUENCE encoding.
9237 *) Add a document (doc/standards.txt) that list all kinds of standards
9238 and so on that are implemented in OpenSSL.
9241 *) Enhance c_rehash script. Old version would mishandle certificates
9242 with the same subject name hash and wouldn't handle CRLs at all.
9243 Added -fingerprint option to crl utility, to support new c_rehash
9247 *) Eliminate non-ANSI declarations in crypto.h and stack.h.
9250 *) Fix for SSL server purpose checking. Server checking was
9251 rejecting certificates which had extended key usage present
9252 but no ssl client purpose.
9253 [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>]
9255 *) Make PKCS#12 code work with no password. The PKCS#12 spec
9256 is a little unclear about how a blank password is handled.
9257 Since the password in encoded as a BMPString with terminating
9258 double NULL a zero length password would end up as just the
9259 double NULL. However no password at all is different and is
9260 handled differently in the PKCS#12 key generation code. NS
9261 treats a blank password as zero length. MSIE treats it as no
9262 password on export: but it will try both on import. We now do
9263 the same: PKCS12_parse() tries zero length and no password if
9264 the password is set to "" or NULL (NULL is now a valid password:
9265 it wasn't before) as does the pkcs12 application.
9268 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
9269 perror when PEM_read_bio_X509_REQ fails, the error message must
9270 be obtained from the error queue.
9273 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
9274 it in ERR_remove_state if appropriate, and change ERR_get_state
9275 accordingly to avoid race conditions (this is necessary because
9276 thread_hash is no longer constant once set).
9279 *) Bugfix for linux-elf makefile.one.
9282 *) RSA_get_default_method() will now cause a default
9283 RSA_METHOD to be chosen if one doesn't exist already.
9284 Previously this was only set during a call to RSA_new()
9285 or RSA_new_method(NULL) meaning it was possible for
9286 RSA_get_default_method() to return NULL.
9289 *) Added native name translation to the existing DSO code
9290 that will convert (if the flag to do so is set) filenames
9291 that are sufficiently small and have no path information
9292 into a canonical native form. Eg. "blah" converted to
9293 "libblah.so" or "blah.dll" etc.
9296 *) New function ERR_error_string_n(e, buf, len) which is like
9297 ERR_error_string(e, buf), but writes at most 'len' bytes
9298 including the 0 terminator. For ERR_error_string_n, 'buf'
9300 [Damien Miller <djm@mindrot.org>, Bodo Moeller]
9302 *) CONF library reworked to become more general. A new CONF
9303 configuration file reader "class" is implemented as well as a
9304 new functions (NCONF_*, for "New CONF") to handle it. The now
9305 old CONF_* functions are still there, but are reimplemented to
9306 work in terms of the new functions. Also, a set of functions
9307 to handle the internal storage of the configuration data is
9308 provided to make it easier to write new configuration file
9309 reader "classes" (I can definitely see something reading a
9310 configuration file in XML format, for example), called _CONF_*,
9311 or "the configuration storage API"...
9313 The new configuration file reading functions are:
9315 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
9316 NCONF_get_section, NCONF_get_string, NCONF_get_numbre
9318 NCONF_default, NCONF_WIN32
9320 NCONF_dump_fp, NCONF_dump_bio
9322 NCONF_default and NCONF_WIN32 are method (or "class") choosers,
9323 NCONF_new creates a new CONF object. This works in the same way
9324 as other interfaces in OpenSSL, like the BIO interface.
9325 NCONF_dump_* dump the internal storage of the configuration file,
9326 which is useful for debugging. All other functions take the same
9327 arguments as the old CONF_* functions wth the exception of the
9328 first that must be a `CONF *' instead of a `LHASH *'.
9330 To make it easer to use the new classes with the old CONF_* functions,
9331 the function CONF_set_default_method is provided.
9334 *) Add '-tls1' option to 'openssl ciphers', which was already
9335 mentioned in the documentation but had not been implemented.
9336 (This option is not yet really useful because even the additional
9337 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
9340 *) Initial DSO code added into libcrypto for letting OpenSSL (and
9341 OpenSSL-based applications) load shared libraries and bind to
9342 them in a portable way.
9343 [Geoff Thorpe, with contributions from Richard Levitte]
9345 Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
9347 *) Make sure _lrotl and _lrotr are only used with MSVC.
9349 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
9350 (the default implementation of RAND_status).
9352 *) Rename openssl x509 option '-crlext', which was added in 0.9.5,
9353 to '-clrext' (= clear extensions), as intended and documented.
9354 [Bodo Moeller; inconsistency pointed out by Michael Attili
9357 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length
9358 was larger than the MD block size.
9359 [Steve Henson, pointed out by Yost William <YostW@tce.com>]
9361 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
9362 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
9363 using the passed key: if the passed key was a private key the result
9364 of X509_print(), for example, would be to print out all the private key
9368 *) des_quad_cksum() byte order bug fix.
9369 [Ulf Möller, using the problem description in krb4-0.9.7, where
9370 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>]
9372 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
9374 [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>]
9376 *) For easily testing in shell scripts whether some command
9377 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
9378 returns with exit code 0 iff no command of the given name is available.
9379 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
9380 the output goes to stdout and nothing is printed to stderr.
9381 Additional arguments are always ignored.
9383 Since for each cipher there is a command of the same name,
9384 the 'no-cipher' compilation switches can be tested this way.
9386 ('openssl no-XXX' is not able to detect pseudo-commands such
9387 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
9390 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
9393 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
9394 is set; it will be thrown away anyway because each handshake creates
9396 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
9397 to parameters -- in previous versions (since OpenSSL 0.9.3) the
9398 'default key' from SSL_CTX_set_tmp_dh would always be lost, meaning
9399 you effectivly got SSL_OP_SINGLE_DH_USE when using this macro.
9402 *) New s_client option -ign_eof: EOF at stdin is ignored, and
9403 'Q' and 'R' lose their special meanings (quit/renegotiate).
9404 This is part of what -quiet does; unlike -quiet, -ign_eof
9405 does not suppress any output.
9408 *) Add compatibility options to the purpose and trust code. The
9409 purpose X509_PURPOSE_ANY is "any purpose" which automatically
9410 accepts a certificate or CA, this was the previous behaviour,
9411 with all the associated security issues.
9413 X509_TRUST_COMPAT is the old trust behaviour: only and
9414 automatically trust self signed roots in certificate store. A
9415 new trust setting X509_TRUST_DEFAULT is used to specify that
9416 a purpose has no associated trust setting and it should instead
9417 use the value in the default purpose.
9420 *) Fix the PKCS#8 DSA private key code so it decodes keys again
9421 and fix a memory leak.
9424 *) In util/mkerr.pl (which implements 'make errors'), preserve
9425 reason strings from the previous version of the .c file, as
9426 the default to have only downcase letters (and digits) in
9427 automatically generated reasons codes is not always appropriate.
9430 *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
9431 using strerror. Previously, ERR_reason_error_string() returned
9432 library names as reason strings for SYSerr; but SYSerr is a special
9433 case where small numbers are errno values, not library numbers.
9436 *) Add '-dsaparam' option to 'openssl dhparam' application. This
9437 converts DSA parameters into DH parameters. (When creating parameters,
9438 DSA_generate_parameters is used.)
9441 *) Include 'length' (recommended exponent length) in C code generated
9442 by 'openssl dhparam -C'.
9445 *) The second argument to set_label in perlasm was already being used
9446 so couldn't be used as a "file scope" flag. Moved to third argument
9450 *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
9451 instead of RAND_bytes for encryption IVs and salts.
9454 *) Include RAND_status() into RAND_METHOD instead of implementing
9455 it only for md_rand.c Otherwise replacing the PRNG by calling
9456 RAND_set_rand_method would be impossible.
9459 *) Don't let DSA_generate_key() enter an infinite loop if the random
9460 number generation fails.
9463 *) New 'rand' application for creating pseudo-random output.
9466 *) Added configuration support for Linux/IA64
9467 [Rolf Haberrecker <rolf@suse.de>]
9469 *) Assembler module support for Mingw32.
9472 *) Shared library support for HPUX (in shlib/).
9473 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous]
9475 *) Shared library support for Solaris gcc.
9476 [Lutz Behnke <behnke@trustcenter.de>]
9478 Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
9480 *) PKCS7_encrypt() was adding text MIME headers twice because they
9481 were added manually and by SMIME_crlf_copy().
9484 *) In bntest.c don't call BN_rand with zero bits argument.
9485 [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>]
9487 *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
9488 case was implemented. This caused BN_div_recp() to fail occasionally.
9491 *) Add an optional second argument to the set_label() in the perl
9492 assembly language builder. If this argument exists and is set
9493 to 1 it signals that the assembler should use a symbol whose
9494 scope is the entire file, not just the current function. This
9495 is needed with MASM which uses the format label:: for this scope.
9496 [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>]
9498 *) Change the ASN1 types so they are typedefs by default. Before
9499 almost all types were #define'd to ASN1_STRING which was causing
9500 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
9504 *) Change names of new functions to the new get1/get0 naming
9505 convention: After 'get1', the caller owns a reference count
9506 and has to call ..._free; 'get0' returns a pointer to some
9507 data structure without incrementing reference counters.
9508 (Some of the existing 'get' functions increment a reference
9509 counter, some don't.)
9510 Similarly, 'set1' and 'add1' functions increase reference
9511 counters or duplicate objects.
9514 *) Allow for the possibility of temp RSA key generation failure:
9515 the code used to assume it always worked and crashed on failure.
9518 *) Fix potential buffer overrun problem in BIO_printf().
9519 [Ulf Möller, using public domain code by Patrick Powell; problem
9520 pointed out by David Sacerdote <das33@cornell.edu>]
9522 *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions
9523 RAND_egd() and RAND_status(). In the command line application,
9524 the EGD socket can be specified like a seed file using RANDFILE
9528 *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
9529 Some CAs (e.g. Verisign) distribute certificates in this form.
9532 *) Remove the SSL_ALLOW_ADH compile option and set the default cipher
9533 list to exclude them. This means that no special compilation option
9534 is needed to use anonymous DH: it just needs to be included in the
9538 *) Change the EVP_MD_CTX_type macro so its meaning consistent with
9539 EVP_MD_type. The old functionality is available in a new macro called
9540 EVP_MD_md(). Change code that uses it and update docs.
9543 *) ..._ctrl functions now have corresponding ..._callback_ctrl functions
9544 where the 'void *' argument is replaced by a function pointer argument.
9545 Previously 'void *' was abused to point to functions, which works on
9546 many platforms, but is not correct. As these functions are usually
9547 called by macros defined in OpenSSL header files, most source code
9548 should work without changes.
9551 *) <openssl/opensslconf.h> (which is created by Configure) now contains
9552 sections with information on -D... compiler switches used for
9553 compiling the library so that applications can see them. To enable
9554 one of these sections, a pre-processor symbol OPENSSL_..._DEFINES
9555 must be defined. E.g.,
9556 #define OPENSSL_ALGORITHM_DEFINES
9557 #include <openssl/opensslconf.h>
9558 defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc.
9559 [Richard Levitte, Ulf and Bodo Möller]
9561 *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
9565 *) Change the 'other' type in certificate aux info to a STACK_OF
9566 X509_ALGOR. Although not an AlgorithmIdentifier as such it has
9567 the required ASN1 format: arbitrary types determined by an OID.
9570 *) Add some PEM_write_X509_REQ_NEW() functions and a command line
9571 argument to 'req'. This is not because the function is newer or
9572 better than others it just uses the work 'NEW' in the certificate
9573 request header lines. Some software needs this.
9576 *) Reorganise password command line arguments: now passwords can be
9577 obtained from various sources. Delete the PEM_cb function and make
9578 it the default behaviour: i.e. if the callback is NULL and the
9579 usrdata argument is not NULL interpret it as a null terminated pass
9580 phrase. If usrdata and the callback are NULL then the pass phrase
9581 is prompted for as usual.
9584 *) Add support for the Compaq Atalla crypto accelerator. If it is installed,
9585 the support is automatically enabled. The resulting binaries will
9586 autodetect the card and use it if present.
9587 [Ben Laurie and Compaq Inc.]
9589 *) Work around for Netscape hang bug. This sends certificate request
9590 and server done in one record. Since this is perfectly legal in the
9591 SSL/TLS protocol it isn't a "bug" option and is on by default. See
9592 the bugs/SSLv3 entry for more info.
9595 *) HP-UX tune-up: new unified configs, HP C compiler bug workaround.
9598 *) Add -rand argument to smime and pkcs12 applications and read/write
9602 *) New 'passwd' tool for crypt(3) and apr1 password hashes.
9605 *) Add command line password options to the remaining applications.
9608 *) Bug fix for BN_div_recp() for numerators with an even number of
9612 *) More tests in bntest.c, and changed test_bn output.
9615 *) ./config recognizes MacOS X now.
9618 *) Bug fix for BN_div() when the first words of num and divsor are
9619 equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0).
9622 *) Add support for various broken PKCS#8 formats, and command line
9623 options to produce them.
9626 *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
9627 get temporary BIGNUMs from a BN_CTX.
9630 *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
9634 *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and
9635 include a #define from the old name to the new. The original intent
9636 was that statically linked binaries could for example just call
9637 SSLeay_add_all_ciphers() to just add ciphers to the table and not
9638 link with digests. This never worked because SSLeay_add_all_digests()
9639 and SSLeay_add_all_ciphers() were in the same source file so calling
9640 one would link with the other. They are now in separate source files.
9643 *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
9646 *) Use a less unusual form of the Miller-Rabin primality test (it used
9647 a binary algorithm for exponentiation integrated into the Miller-Rabin
9648 loop, our standard modexp algorithms are faster).
9651 *) Support for the EBCDIC character set completed.
9652 [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>]
9654 *) Source code cleanups: use const where appropriate, eliminate casts,
9655 use void * instead of char * in lhash.
9658 *) Bugfix: ssl3_send_server_key_exchange was not restartable
9659 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
9660 this the server could overwrite ephemeral keys that the client
9664 *) Turn DSA_is_prime into a macro that calls BN_is_prime,
9665 using 50 iterations of the Rabin-Miller test.
9667 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
9668 iterations of the Rabin-Miller test as required by the appendix
9669 to FIPS PUB 186[-1]) instead of DSA_is_prime.
9670 As BN_is_prime_fasttest includes trial division, DSA parameter
9671 generation becomes much faster.
9673 This implies a change for the callback functions in DSA_is_prime
9674 and DSA_generate_parameters: The callback function is called once
9675 for each positive witness in the Rabin-Miller test, not just
9676 occasionally in the inner loop; and the parameters to the
9677 callback function now provide an iteration count for the outer
9678 loop rather than for the current invocation of the inner loop.
9679 DSA_generate_parameters additionally can call the callback
9680 function with an 'iteration count' of -1, meaning that a
9681 candidate has passed the trial division test (when q is generated
9682 from an application-provided seed, trial division is skipped).
9685 *) New function BN_is_prime_fasttest that optionally does trial
9686 division before starting the Rabin-Miller test and has
9687 an additional BN_CTX * argument (whereas BN_is_prime always
9688 has to allocate at least one BN_CTX).
9689 'callback(1, -1, cb_arg)' is called when a number has passed the
9690 trial division stage.
9693 *) Fix for bug in CRL encoding. The validity dates weren't being handled
9697 *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
9700 *) New function BN_pseudo_rand().
9703 *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
9704 bignum version of BN_from_montgomery() with the working code from
9705 SSLeay 0.9.0 (the word based version is faster anyway), and clean up
9709 *) Avoid a race condition in s2_clnt.c (function get_server_hello) that
9710 made it impossible to use the same SSL_SESSION data structure in
9711 SSL2 clients in multiple threads.
9714 *) The return value of RAND_load_file() no longer counts bytes obtained
9715 by stat(). RAND_load_file(..., -1) is new and uses the complete file
9716 to seed the PRNG (previously an explicit byte count was required).
9717 [Ulf Möller, Bodo Möller]
9719 *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
9720 used (char *) instead of (void *) and had casts all over the place.
9723 *) Make BN_generate_prime() return NULL on error if ret!=NULL.
9726 *) Retain source code compatibility for BN_prime_checks macro:
9727 BN_is_prime(..., BN_prime_checks, ...) now uses
9728 BN_prime_checks_for_size to determine the appropriate number of
9729 Rabin-Miller iterations.
9732 *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
9733 DH_CHECK_P_NOT_SAFE_PRIME.
9734 (Check if this is true? OpenPGP calls them "strong".)
9737 *) Merge the functionality of "dh" and "gendh" programs into a new program
9738 "dhparam". The old programs are retained for now but will handle DH keys
9739 (instead of parameters) in future.
9742 *) Make the ciphers, s_server and s_client programs check the return values
9743 when a new cipher list is set.
9746 *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
9747 ciphers. Before when the 56bit ciphers were enabled the sorting was
9750 The syntax for the cipher sorting has been extended to support sorting by
9751 cipher-strength (using the strength_bits hard coded in the tables).
9752 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
9754 Fix a bug in the cipher-command parser: when supplying a cipher command
9755 string with an "undefined" symbol (neither command nor alphanumeric
9756 [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now
9757 an error is flagged.
9759 Due to the strength-sorting extension, the code of the
9760 ssl_create_cipher_list() function was completely rearranged. I hope that
9761 the readability was also increased :-)
9762 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
9764 *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1
9765 for the first serial number and places 2 in the serial number file. This
9766 avoids problems when the root CA is created with serial number zero and
9767 the first user certificate has the same issuer name and serial number
9771 *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
9772 the new code. Add documentation for this stuff.
9775 *) Changes to X509_ATTRIBUTE utilities. These have been renamed from
9776 X509_*() to X509at_*() on the grounds that they don't handle X509
9777 structures and behave in an analogous way to the X509v3 functions:
9778 they shouldn't be called directly but wrapper functions should be used
9781 So we also now have some wrapper functions that call the X509at functions
9782 when passed certificate requests. (TO DO: similar things can be done with
9783 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
9784 things. Some of these need some d2i or i2d and print functionality
9785 because they handle more complex structures.)
9788 *) Add missing #ifndefs that caused missing symbols when building libssl
9789 as a shared library without RSA. Use #ifndef NO_SSL2 instead of
9790 NO_RSA in ssl/s2*.c.
9791 [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller]
9793 *) Precautions against using the PRNG uninitialized: RAND_bytes() now
9794 has a return value which indicates the quality of the random data
9795 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
9796 error queue. New function RAND_pseudo_bytes() generates output that is
9797 guaranteed to be unique but not unpredictable. RAND_add is like
9798 RAND_seed, but takes an extra argument for an entropy estimate
9799 (RAND_seed always assumes full entropy).
9802 *) Do more iterations of Rabin-Miller probable prime test (specifically,
9803 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
9804 instead of only 2 for all lengths; see BN_prime_checks_for_size definition
9805 in crypto/bn/bn_prime.c for the complete table). This guarantees a
9806 false-positive rate of at most 2^-80 for random input.
9809 *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
9812 *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
9813 in the 0.9.5 release), this returns the chain
9814 from an X509_CTX structure with a dup of the stack and all
9815 the X509 reference counts upped: so the stack will exist
9816 after X509_CTX_cleanup() has been called. Modify pkcs12.c
9819 Also make SSL_SESSION_print() print out the verify return
9823 *) Add manpage for the pkcs12 command. Also change the default
9824 behaviour so MAC iteration counts are used unless the new
9825 -nomaciter option is used. This improves file security and
9826 only older versions of MSIE (4.0 for example) need it.
9829 *) Honor the no-xxx Configure options when creating .DEF files.
9832 *) Add PKCS#10 attributes to field table: challengePassword,
9833 unstructuredName and unstructuredAddress. These are taken from
9834 draft PKCS#9 v2.0 but are compatible with v1.2 provided no
9835 international characters are used.
9837 More changes to X509_ATTRIBUTE code: allow the setting of types
9838 based on strings. Remove the 'loc' parameter when adding
9839 attributes because these will be a SET OF encoding which is sorted
9843 *) Initial changes to the 'req' utility to allow request generation
9844 automation. This will allow an application to just generate a template
9845 file containing all the field values and have req construct the
9848 Initial support for X509_ATTRIBUTE handling. Stacks of these are
9849 used all over the place including certificate requests and PKCS#7
9850 structures. They are currently handled manually where necessary with
9851 some primitive wrappers for PKCS#7. The new functions behave in a
9852 manner analogous to the X509 extension functions: they allow
9853 attributes to be looked up by NID and added.
9855 Later something similar to the X509V3 code would be desirable to
9856 automatically handle the encoding, decoding and printing of the
9857 more complex types. The string types like challengePassword can
9858 be handled by the string table functions.
9860 Also modified the multi byte string table handling. Now there is
9861 a 'global mask' which masks out certain types. The table itself
9862 can use the flag STABLE_NO_MASK to ignore the mask setting: this
9863 is useful when for example there is only one permissible type
9864 (as in countryName) and using the mask might result in no valid
9868 *) Clean up 'Finished' handling, and add functions SSL_get_finished and
9869 SSL_get_peer_finished to allow applications to obtain the latest
9870 Finished messages sent to the peer or expected from the peer,
9871 respectively. (SSL_get_peer_finished is usually the Finished message
9872 actually received from the peer, otherwise the protocol will be aborted.)
9874 As the Finished message are message digests of the complete handshake
9875 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
9876 be used for external authentication procedures when the authentication
9877 provided by SSL/TLS is not desired or is not enough.
9880 *) Enhanced support for Alpha Linux is added. Now ./config checks if
9881 the host supports BWX extension and if Compaq C is present on the
9882 $PATH. Just exploiting of the BWX extension results in 20-30%
9883 performance kick for some algorithms, e.g. DES and RC4 to mention
9884 a couple. Compaq C in turn generates ~20% faster code for MD5 and
9888 *) Add support for MS "fast SGC". This is arguably a violation of the
9889 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
9890 weak crypto and after checking the certificate is SGC a second one
9891 with strong crypto. MS SGC stops the first handshake after receiving
9892 the server certificate message and sends a second client hello. Since
9893 a server will typically do all the time consuming operations before
9894 expecting any further messages from the client (server key exchange
9895 is the most expensive) there is little difference between the two.
9897 To get OpenSSL to support MS SGC we have to permit a second client
9898 hello message after we have sent server done. In addition we have to
9899 reset the MAC if we do get this second client hello.
9902 *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide
9903 if a DER encoded private key is RSA or DSA traditional format. Changed
9904 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
9905 format DER encoded private key. Newer code should use PKCS#8 format which
9906 has the key type encoded in the ASN1 structure. Added DER private key
9907 support to pkcs8 application.
9910 *) SSL 3/TLS 1 servers now don't request certificates when an anonymous
9911 ciphersuites has been selected (as required by the SSL 3/TLS 1
9912 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
9913 is set, we interpret this as a request to violate the specification
9914 (the worst that can happen is a handshake failure, and 'correct'
9915 behaviour would result in a handshake failure anyway).
9918 *) In SSL_CTX_add_session, take into account that there might be multiple
9919 SSL_SESSION structures with the same session ID (e.g. when two threads
9920 concurrently obtain them from an external cache).
9921 The internal cache can handle only one SSL_SESSION with a given ID,
9922 so if there's a conflict, we now throw out the old one to achieve
9926 *) Add OIDs for idea and blowfish in CBC mode. This will allow both
9927 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
9928 some routines that use cipher OIDs: some ciphers do not have OIDs
9929 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
9933 *) Simplify the trust setting structure and code. Now we just have
9934 two sequences of OIDs for trusted and rejected settings. These will
9935 typically have values the same as the extended key usage extension
9936 and any application specific purposes.
9938 The trust checking code now has a default behaviour: it will just
9939 check for an object with the same NID as the passed id. Functions can
9940 be provided to override either the default behaviour or the behaviour
9941 for a given id. SSL client, server and email already have functions
9942 in place for compatibility: they check the NID and also return "trusted"
9943 if the certificate is self signed.
9946 *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the
9947 traditional format into an EVP_PKEY structure.
9950 *) Add a password callback function PEM_cb() which either prompts for
9951 a password if usr_data is NULL or otherwise assumes it is a null
9952 terminated password. Allow passwords to be passed on command line
9953 environment or config files in a few more utilities.
9956 *) Add a bunch of DER and PEM functions to handle PKCS#8 format private
9957 keys. Add some short names for PKCS#8 PBE algorithms and allow them
9958 to be specified on the command line for the pkcs8 and pkcs12 utilities.
9959 Update documentation.
9962 *) Support for ASN1 "NULL" type. This could be handled before by using
9963 ASN1_TYPE but there wasn't any function that would try to read a NULL
9964 and produce an error if it couldn't. For compatibility we also have
9965 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
9966 don't allocate anything because they don't need to.
9969 *) Initial support for MacOS is now provided. Examine INSTALL.MacOS
9971 [Andy Polyakov, Roy Woods <roy@centicsystems.ca>]
9973 *) Rebuild of the memory allocation routines used by OpenSSL code and
9974 possibly others as well. The purpose is to make an interface that
9975 provide hooks so anyone can build a separate set of allocation and
9976 deallocation routines to be used by OpenSSL, for example memory
9977 pool implementations, or something else, which was previously hard
9978 since Malloc(), Realloc() and Free() were defined as macros having
9979 the values malloc, realloc and free, respectively (except for Win32
9980 compilations). The same is provided for memory debugging code.
9981 OpenSSL already comes with functionality to find memory leaks, but
9982 this gives people a chance to debug other memory problems.
9984 With these changes, a new set of functions and macros have appeared:
9986 CRYPTO_set_mem_debug_functions() [F]
9987 CRYPTO_get_mem_debug_functions() [F]
9988 CRYPTO_dbg_set_options() [F]
9989 CRYPTO_dbg_get_options() [F]
9990 CRYPTO_malloc_debug_init() [M]
9992 The memory debug functions are NULL by default, unless the library
9993 is compiled with CRYPTO_MDEBUG or friends is defined. If someone
9994 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
9995 gives the standard debugging functions that come with OpenSSL) or
9996 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
9997 provided by the library user) must be used. When the standard
9998 debugging functions are used, CRYPTO_dbg_set_options can be used to
9999 request additional information:
10000 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
10001 the CRYPTO_MDEBUG_xxx macro when compiling the library.
10003 Also, things like CRYPTO_set_mem_functions will always give the
10004 expected result (the new set of functions is used for allocation
10005 and deallocation) at all times, regardless of platform and compiler
10008 To finish it up, some functions that were never use in any other
10009 way than through macros have a new API and new semantic:
10011 CRYPTO_dbg_malloc()
10012 CRYPTO_dbg_realloc()
10015 All macros of value have retained their old syntax.
10016 [Richard Levitte and Bodo Moeller]
10018 *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
10019 ordering of SMIMECapabilities wasn't in "strength order" and there
10020 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
10024 *) Some ASN1 types with illegal zero length encoding (INTEGER,
10025 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
10026 [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson]
10028 *) Merge in my S/MIME library for OpenSSL. This provides a simple
10029 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
10030 functionality to handle multipart/signed properly) and a utility
10031 called 'smime' to call all this stuff. This is based on code I
10032 originally wrote for Celo who have kindly allowed it to be
10033 included in OpenSSL.
10036 *) Add variants des_set_key_checked and des_set_key_unchecked of
10037 des_set_key (aka des_key_sched). Global variable des_check_key
10038 decides which of these is called by des_set_key; this way
10039 des_check_key behaves as it always did, but applications and
10040 the library itself, which was buggy for des_check_key == 1,
10041 have a cleaner way to pick the version they need.
10044 *) New function PKCS12_newpass() which changes the password of a
10048 *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and
10049 dynamic mix. In both cases the ids can be used as an index into the
10050 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
10051 functions so they accept a list of the field values and the
10052 application doesn't need to directly manipulate the X509_TRUST
10056 *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
10060 *) Modify the way the V3 extension code looks up extensions. This now
10061 works in a similar way to the object code: we have some "standard"
10062 extensions in a static table which is searched with OBJ_bsearch()
10063 and the application can add dynamic ones if needed. The file
10064 crypto/x509v3/ext_dat.h now has the info: this file needs to be
10065 updated whenever a new extension is added to the core code and kept
10066 in ext_nid order. There is a simple program 'tabtest.c' which checks
10067 this. New extensions are not added too often so this file can readily
10068 be maintained manually.
10070 There are two big advantages in doing things this way. The extensions
10071 can be looked up immediately and no longer need to be "added" using
10072 X509V3_add_standard_extensions(): this function now does nothing.
10073 [Side note: I get *lots* of email saying the extension code doesn't
10074 work because people forget to call this function]
10075 Also no dynamic allocation is done unless new extensions are added:
10076 so if we don't add custom extensions there is no need to call
10077 X509V3_EXT_cleanup().
10080 *) Modify enc utility's salting as follows: make salting the default. Add a
10081 magic header, so unsalted files fail gracefully instead of just decrypting
10082 to garbage. This is because not salting is a big security hole, so people
10083 should be discouraged from doing it.
10086 *) Fixes and enhancements to the 'x509' utility. It allowed a message
10087 digest to be passed on the command line but it only used this
10088 parameter when signing a certificate. Modified so all relevant
10089 operations are affected by the digest parameter including the
10090 -fingerprint and -x509toreq options. Also -x509toreq choked if a
10091 DSA key was used because it didn't fix the digest.
10094 *) Initial certificate chain verify code. Currently tests the untrusted
10095 certificates for consistency with the verify purpose (which is set
10096 when the X509_STORE_CTX structure is set up) and checks the pathlength.
10098 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
10099 this is because it will reject chains with invalid extensions whereas
10100 every previous version of OpenSSL and SSLeay made no checks at all.
10102 Trust code: checks the root CA for the relevant trust settings. Trust
10103 settings have an initial value consistent with the verify purpose: e.g.
10104 if the verify purpose is for SSL client use it expects the CA to be
10105 trusted for SSL client use. However the default value can be changed to
10106 permit custom trust settings: one example of this would be to only trust
10107 certificates from a specific "secure" set of CAs.
10109 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
10110 which should be used for version portability: especially since the
10111 verify structure is likely to change more often now.
10113 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
10114 to set them. If not set then assume SSL clients will verify SSL servers
10117 Two new options to the verify program: -untrusted allows a set of
10118 untrusted certificates to be passed in and -purpose which sets the
10119 intended purpose of the certificate. If a purpose is set then the
10120 new chain verify code is used to check extension consistency.
10123 *) Support for the authority information access extension.
10126 *) Modify RSA and DSA PEM read routines to transparently handle
10127 PKCS#8 format private keys. New *_PUBKEY_* functions that handle
10128 public keys in a format compatible with certificate
10129 SubjectPublicKeyInfo structures. Unfortunately there were already
10130 functions called *_PublicKey_* which used various odd formats so
10131 these are retained for compatibility: however the DSA variants were
10132 never in a public release so they have been deleted. Changed dsa/rsa
10133 utilities to handle the new format: note no releases ever handled public
10134 keys so we should be OK.
10136 The primary motivation for this change is to avoid the same fiasco
10137 that dogs private keys: there are several incompatible private key
10138 formats some of which are standard and some OpenSSL specific and
10139 require various evil hacks to allow partial transparent handling and
10140 even then it doesn't work with DER formats. Given the option anything
10141 other than PKCS#8 should be dumped: but the other formats have to
10142 stay in the name of compatibility.
10144 With public keys and the benefit of hindsight one standard format
10145 is used which works with EVP_PKEY, RSA or DSA structures: though
10146 it clearly returns an error if you try to read the wrong kind of key.
10148 Added a -pubkey option to the 'x509' utility to output the public key.
10149 Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*()
10150 (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add
10151 EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*())
10152 that do the same as the EVP_PKEY_assign_*() except they up the
10153 reference count of the added key (they don't "swallow" the
10157 *) Fixes to crypto/x509/by_file.c the code to read in certificates and
10158 CRLs would fail if the file contained no certificates or no CRLs:
10159 added a new function to read in both types and return the number
10160 read: this means that if none are read it will be an error. The
10161 DER versions of the certificate and CRL reader would always fail
10162 because it isn't possible to mix certificates and CRLs in DER format
10163 without choking one or the other routine. Changed this to just read
10164 a certificate: this is the best we can do. Also modified the code
10165 in apps/verify.c to take notice of return codes: it was previously
10166 attempting to read in certificates from NULL pointers and ignoring
10167 any errors: this is one reason why the cert and CRL reader seemed
10168 to work. It doesn't check return codes from the default certificate
10169 routines: these may well fail if the certificates aren't installed.
10172 *) Code to support otherName option in GeneralName.
10175 *) First update to verify code. Change the verify utility
10176 so it warns if it is passed a self signed certificate:
10177 for consistency with the normal behaviour. X509_verify
10178 has been modified to it will now verify a self signed
10179 certificate if *exactly* the same certificate appears
10180 in the store: it was previously impossible to trust a
10181 single self signed certificate. This means that:
10182 openssl verify ss.pem
10183 now gives a warning about a self signed certificate but
10184 openssl verify -CAfile ss.pem ss.pem
10188 *) For servers, store verify_result in SSL_SESSION data structure
10189 (and add it to external session representation).
10190 This is needed when client certificate verifications fails,
10191 but an application-provided verification callback (set by
10192 SSL_CTX_set_cert_verify_callback) allows accepting the session
10193 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
10194 but returns 1): When the session is reused, we have to set
10195 ssl->verify_result to the appropriate error code to avoid
10197 [Bodo Moeller, problem pointed out by Lutz Jaenicke]
10199 *) Fix a bug in the new PKCS#7 code: it didn't consider the
10200 case in PKCS7_dataInit() where the signed PKCS7 structure
10201 didn't contain any existing data because it was being created.
10202 [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson]
10204 *) Add a salt to the key derivation routines in enc.c. This
10205 forms the first 8 bytes of the encrypted file. Also add a
10206 -S option to allow a salt to be input on the command line.
10209 *) New function X509_cmp(). Oddly enough there wasn't a function
10210 to compare two certificates. We do this by working out the SHA1
10211 hash and comparing that. X509_cmp() will be needed by the trust
10215 *) SSL_get1_session() is like SSL_get_session(), but increments
10216 the reference count in the SSL_SESSION returned.
10217 [Geoff Thorpe <geoff@eu.c2.net>]
10219 *) Fix for 'req': it was adding a null to request attributes.
10220 Also change the X509_LOOKUP and X509_INFO code to handle
10221 certificate auxiliary information.
10224 *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document
10228 *) Add the possibility to add extra information to the memory leak
10229 detecting output, to form tracebacks, showing from where each
10230 allocation was originated: CRYPTO_push_info("constant string") adds
10231 the string plus current file name and line number to a per-thread
10232 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
10233 is like calling CYRPTO_pop_info() until the stack is empty.
10234 Also updated memory leak detection code to be multi-thread-safe.
10237 *) Add options -text and -noout to pkcs7 utility and delete the
10238 encryption options which never did anything. Update docs.
10241 *) Add options to some of the utilities to allow the pass phrase
10242 to be included on either the command line (not recommended on
10243 OSes like Unix) or read from the environment. Update the
10244 manpages and fix a few bugs.
10247 *) Add a few manpages for some of the openssl commands.
10250 *) Fix the -revoke option in ca. It was freeing up memory twice,
10251 leaking and not finding already revoked certificates.
10254 *) Extensive changes to support certificate auxiliary information.
10255 This involves the use of X509_CERT_AUX structure and X509_AUX
10256 functions. An X509_AUX function such as PEM_read_X509_AUX()
10257 can still read in a certificate file in the usual way but it
10258 will also read in any additional "auxiliary information". By
10259 doing things this way a fair degree of compatibility can be
10260 retained: existing certificates can have this information added
10261 using the new 'x509' options.
10263 Current auxiliary information includes an "alias" and some trust
10264 settings. The trust settings will ultimately be used in enhanced
10265 certificate chain verification routines: currently a certificate
10266 can only be trusted if it is self signed and then it is trusted
10270 *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD).
10271 The problem was that one of the replacement routines had not been working
10272 since SSLeay releases. For now the offending routine has been replaced
10273 with non-optimised assembler. Even so, this now gives around 95%
10274 performance improvement for 1024 bit RSA signs.
10277 *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2
10278 handling. Most clients have the effective key size in bits equal to
10279 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
10280 A few however don't do this and instead use the size of the decrypted key
10281 to determine the RC2 key length and the AlgorithmIdentifier to determine
10282 the effective key length. In this case the effective key length can still
10283 be 40 bits but the key length can be 168 bits for example. This is fixed
10284 by manually forcing an RC2 key into the EVP_PKEY structure because the
10285 EVP code can't currently handle unusual RC2 key sizes: it always assumes
10286 the key length and effective key length are equal.
10289 *) Add a bunch of functions that should simplify the creation of
10290 X509_NAME structures. Now you should be able to do:
10291 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
10292 and have it automatically work out the correct field type and fill in
10293 the structures. The more adventurous can try:
10294 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
10295 and it will (hopefully) work out the correct multibyte encoding.
10298 *) Change the 'req' utility to use the new field handling and multibyte
10299 copy routines. Before the DN field creation was handled in an ad hoc
10300 way in req, ca, and x509 which was rather broken and didn't support
10301 BMPStrings or UTF8Strings. Since some software doesn't implement
10302 BMPStrings or UTF8Strings yet, they can be enabled using the config file
10303 using the dirstring_type option. See the new comment in the default
10304 openssl.cnf for more info.
10307 *) Make crypto/rand/md_rand.c more robust:
10308 - Assure unique random numbers after fork().
10309 - Make sure that concurrent threads access the global counter and
10310 md serializably so that we never lose entropy in them
10311 or use exactly the same state in multiple threads.
10312 Access to the large state is not always serializable because
10313 the additional locking could be a performance killer, and
10314 md should be large enough anyway.
10317 *) New file apps/app_rand.c with commonly needed functionality
10318 for handling the random seed file.
10320 Use the random seed file in some applications that previously did not:
10322 dsaparam -genkey (which also ignored its '-rand' option),
10325 x509 (when signing).
10326 Except on systems with /dev/urandom, it is crucial to have a random
10327 seed file at least for key creation, DSA signing, and for DH exchanges;
10328 for RSA signatures we could do without one.
10330 gendh and gendsa (unlike genrsa) used to read only the first byte
10331 of each file listed in the '-rand' option. The function as previously
10332 found in genrsa is now in app_rand.c and is used by all programs
10333 that support '-rand'.
10336 *) In RAND_write_file, use mode 0600 for creating files;
10337 don't just chmod when it may be too late.
10340 *) Report an error from X509_STORE_load_locations
10341 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
10344 *) New function ASN1_mbstring_copy() this copies a string in either
10345 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
10346 into an ASN1_STRING type. A mask of permissible types is passed
10347 and it chooses the "minimal" type to use or an error if not type
10351 *) Add function equivalents to the various macros in asn1.h. The old
10352 macros are retained with an M_ prefix. Code inside the library can
10353 use the M_ macros. External code (including the openssl utility)
10354 should *NOT* in order to be "shared library friendly".
10357 *) Add various functions that can check a certificate's extensions
10358 to see if it usable for various purposes such as SSL client,
10359 server or S/MIME and CAs of these types. This is currently
10360 VERY EXPERIMENTAL but will ultimately be used for certificate chain
10361 verification. Also added a -purpose flag to x509 utility to
10362 print out all the purposes.
10365 *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated
10369 *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search
10370 for, obtain and decode and extension and obtain its critical flag.
10371 This allows all the necessary extension code to be handled in a
10372 single function call.
10375 *) RC4 tune-up featuring 30-40% performance improvement on most RISC
10376 platforms. See crypto/rc4/rc4_enc.c for further details.
10379 *) New -noout option to asn1parse. This causes no output to be produced
10380 its main use is when combined with -strparse and -out to extract data
10381 from a file (which may not be in ASN.1 format).
10384 *) Fix for pkcs12 program. It was hashing an invalid certificate pointer
10385 when producing the local key id.
10386 [Richard Levitte <levitte@stacken.kth.se>]
10388 *) New option -dhparam in s_server. This allows a DH parameter file to be
10389 stated explicitly. If it is not stated then it tries the first server
10390 certificate file. The previous behaviour hard coded the filename
10394 *) Add -pubin and -pubout options to the rsa and dsa commands. These allow
10395 a public key to be input or output. For example:
10396 openssl rsa -in key.pem -pubout -out pubkey.pem
10397 Also added necessary DSA public key functions to handle this.
10400 *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
10401 in the message. This was handled by allowing
10402 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
10403 [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>]
10405 *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
10406 to the end of the strings whereas this didn't. This would cause problems
10407 if strings read with d2i_ASN1_bytes() were later modified.
10408 [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>]
10410 *) Fix for base64 decode bug. When a base64 bio reads only one line of
10411 data and it contains EOF it will end up returning an error. This is
10412 caused by input 46 bytes long. The cause is due to the way base64
10413 BIOs find the start of base64 encoded data. They do this by trying a
10414 trial decode on each line until they find one that works. When they
10415 do a flag is set and it starts again knowing it can pass all the
10416 data directly through the decoder. Unfortunately it doesn't reset
10417 the context it uses. This means that if EOF is reached an attempt
10418 is made to pass two EOFs through the context and this causes the
10419 resulting error. This can also cause other problems as well. As is
10420 usual with these problems it takes *ages* to find and the fix is
10421 trivial: move one line.
10422 [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ]
10424 *) Ugly workaround to get s_client and s_server working under Windows. The
10425 old code wouldn't work because it needed to select() on sockets and the
10426 tty (for keypresses and to see if data could be written). Win32 only
10427 supports select() on sockets so we select() with a 1s timeout on the
10428 sockets and then see if any characters are waiting to be read, if none
10429 are present then we retry, we also assume we can always write data to
10430 the tty. This isn't nice because the code then blocks until we've
10431 received a complete line of data and it is effectively polling the
10432 keyboard at 1s intervals: however it's quite a bit better than not
10433 working at all :-) A dedicated Windows application might handle this
10434 with an event loop for example.
10437 *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
10438 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
10439 will be called when RSA_sign() and RSA_verify() are used. This is useful
10440 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
10441 For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
10442 should *not* be used: RSA_sign() and RSA_verify() must be used instead.
10443 This necessitated the support of an extra signature type NID_md5_sha1
10444 for SSL signatures and modifications to the SSL library to use it instead
10445 of calling RSA_public_decrypt() and RSA_private_encrypt().
10448 *) Add new -verify -CAfile and -CApath options to the crl program, these
10449 will lookup a CRL issuers certificate and verify the signature in a
10450 similar way to the verify program. Tidy up the crl program so it
10451 no longer accesses structures directly. Make the ASN1 CRL parsing a bit
10452 less strict. It will now permit CRL extensions even if it is not
10453 a V2 CRL: this will allow it to tolerate some broken CRLs.
10456 *) Initialize all non-automatic variables each time one of the openssl
10457 sub-programs is started (this is necessary as they may be started
10458 multiple times from the "OpenSSL>" prompt).
10459 [Lennart Bang, Bodo Moeller]
10461 *) Preliminary compilation option RSA_NULL which disables RSA crypto without
10462 removing all other RSA functionality (this is what NO_RSA does). This
10463 is so (for example) those in the US can disable those operations covered
10464 by the RSA patent while allowing storage and parsing of RSA keys and RSA
10468 *) Non-copying interface to BIO pairs.
10469 (still largely untested)
10472 *) New function ANS1_tag2str() to convert an ASN1 tag to a descriptive
10473 ASCII string. This was handled independently in various places before.
10476 *) New functions UTF8_getc() and UTF8_putc() that parse and generate
10477 UTF8 strings a character at a time.
10480 *) Use client_version from client hello to select the protocol
10481 (s23_srvr.c) and for RSA client key exchange verification
10482 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
10485 *) Add various utility functions to handle SPKACs, these were previously
10486 handled by poking round in the structure internals. Added new function
10487 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
10488 print, verify and generate SPKACs. Based on an original idea from
10489 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
10492 *) RIPEMD160 is operational on all platforms and is back in 'make test'.
10495 *) Allow the config file extension section to be overwritten on the
10496 command line. Based on an original idea from Massimiliano Pala
10497 <madwolf@comune.modena.it>. The new option is called -extensions
10498 and can be applied to ca, req and x509. Also -reqexts to override
10499 the request extensions in req and -crlexts to override the crl extensions
10503 *) Add new feature to the SPKAC handling in ca. Now you can include
10504 the same field multiple times by preceding it by "XXXX." for example:
10507 this is the same syntax as used in the req config file.
10510 *) Allow certificate extensions to be added to certificate requests. These
10511 are specified in a 'req_extensions' option of the req section of the
10512 config file. They can be printed out with the -text option to req but
10513 are otherwise ignored at present.
10516 *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
10517 data read consists of only the final block it would not decrypted because
10518 EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
10519 A misplaced 'break' also meant the decrypted final block might not be
10520 copied until the next read.
10523 *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
10524 a few extra parameters to the DH structure: these will be useful if
10525 for example we want the value of 'q' or implement X9.42 DH.
10528 *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and
10529 provides hooks that allow the default DSA functions or functions on a
10530 "per key" basis to be replaced. This allows hardware acceleration and
10531 hardware key storage to be handled without major modification to the
10532 library. Also added low level modexp hooks and CRYPTO_EX structure and
10533 associated functions.
10536 *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
10537 as "read only": it can't be written to and the buffer it points to will
10538 not be freed. Reading from a read only BIO is much more efficient than
10539 a normal memory BIO. This was added because there are several times when
10540 an area of memory needs to be read from a BIO. The previous method was
10541 to create a memory BIO and write the data to it, this results in two
10542 copies of the data and an O(n^2) reading algorithm. There is a new
10543 function BIO_new_mem_buf() which creates a read only memory BIO from
10544 an area of memory. Also modified the PKCS#7 routines to use read only
10548 *) Bugfix: ssl23_get_client_hello did not work properly when called in
10549 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
10550 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
10551 but a retry condition occurred while trying to read the rest.
10554 *) The PKCS7_ENC_CONTENT_new() function was setting the content type as
10555 NID_pkcs7_encrypted by default: this was wrong since this should almost
10556 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
10557 the encrypted data type: this is a more sensible place to put it and it
10558 allows the PKCS#12 code to be tidied up that duplicated this
10562 *) Changed obj_dat.pl script so it takes its input and output files on
10563 the command line. This should avoid shell escape redirection problems
10567 *) Initial support for certificate extension requests, these are included
10568 in things like Xenroll certificate requests. Included functions to allow
10569 extensions to be obtained and added.
10572 *) -crlf option to s_client and s_server for sending newlines as
10573 CRLF (as required by many protocols).
10576 Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
10578 *) Install libRSAglue.a when OpenSSL is built with RSAref.
10579 [Ralf S. Engelschall]
10581 *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency.
10582 [Andrija Antonijevic <TheAntony2@bigfoot.com>]
10584 *) Fix -startdate and -enddate (which was missing) arguments to 'ca'
10588 *) New function DSA_dup_DH, which duplicates DSA parameters/keys as
10589 DH parameters/keys (q is lost during that conversion, but the resulting
10590 DH parameters contain its length).
10592 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
10593 much faster than DH_generate_parameters (which creates parameters
10594 where p = 2*q + 1), and also the smaller q makes DH computations
10595 much more efficient (160-bit exponentiation instead of 1024-bit
10596 exponentiation); so this provides a convenient way to support DHE
10597 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
10598 utter importance to use
10599 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
10601 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
10602 when such DH parameters are used, because otherwise small subgroup
10603 attacks may become possible!
10606 *) Avoid memory leak in i2d_DHparams.
10609 *) Allow the -k option to be used more than once in the enc program:
10610 this allows the same encrypted message to be read by multiple recipients.
10613 *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
10614 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
10615 it will always use the numerical form of the OID, even if it has a short
10619 *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
10620 method only got called if p,q,dmp1,dmq1,iqmp components were present,
10621 otherwise bn_mod_exp was called. In the case of hardware keys for example
10622 no private key components need be present and it might store extra data
10623 in the RSA structure, which cannot be accessed from bn_mod_exp.
10624 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
10625 private key operations.
10628 *) Added support for SPARC Linux.
10631 *) pem_password_cb function type incompatibly changed from
10632 typedef int pem_password_cb(char *buf, int size, int rwflag);
10634 ....(char *buf, int size, int rwflag, void *userdata);
10635 so that applications can pass data to their callbacks:
10636 The PEM[_ASN1]_{read,write}... functions and macros now take an
10637 additional void * argument, which is just handed through whenever
10638 the password callback is called.
10639 [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller]
10641 New function SSL_CTX_set_default_passwd_cb_userdata.
10643 Compatibility note: As many C implementations push function arguments
10644 onto the stack in reverse order, the new library version is likely to
10645 interoperate with programs that have been compiled with the old
10646 pem_password_cb definition (PEM_whatever takes some data that
10647 happens to be on the stack as its last argument, and the callback
10648 just ignores this garbage); but there is no guarantee whatsoever that
10651 *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
10652 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
10653 problems not only on Windows, but also on some Unix platforms.
10654 To avoid problematic command lines, these definitions are now in an
10655 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
10656 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
10659 *) MIPS III/IV assembler module is reimplemented.
10662 *) More DES library cleanups: remove references to srand/rand and
10663 delete an unused file.
10666 *) Add support for the the free Netwide assembler (NASM) under Win32,
10667 since not many people have MASM (ml) and it can be hard to obtain.
10668 This is currently experimental but it seems to work OK and pass all
10669 the tests. Check out INSTALL.W32 for info.
10672 *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
10673 without temporary keys kept an extra copy of the server key,
10674 and connections with temporary keys did not free everything in case
10678 *) New function RSA_check_key and new openssl rsa option -check
10679 for verifying the consistency of RSA keys.
10680 [Ulf Moeller, Bodo Moeller]
10682 *) Various changes to make Win32 compile work:
10683 1. Casts to avoid "loss of data" warnings in p5_crpt2.c
10684 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
10685 comparison" warnings.
10686 3. Add sk_<TYPE>_sort to DEF file generator and do make update.
10689 *) Add a debugging option to PKCS#5 v2 key generation function: when
10690 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
10691 derived keys are printed to stderr.
10694 *) Copy the flags in ASN1_STRING_dup().
10695 [Roman E. Pavlov <pre@mo.msk.ru>]
10697 *) The x509 application mishandled signing requests containing DSA
10698 keys when the signing key was also DSA and the parameters didn't match.
10700 It was supposed to omit the parameters when they matched the signing key:
10701 the verifying software was then supposed to automatically use the CA's
10702 parameters if they were absent from the end user certificate.
10704 Omitting parameters is no longer recommended. The test was also
10705 the wrong way round! This was probably due to unusual behaviour in
10706 EVP_cmp_parameters() which returns 1 if the parameters match.
10707 This meant that parameters were omitted when they *didn't* match and
10708 the certificate was useless. Certificates signed with 'ca' didn't have
10710 [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>]
10712 *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
10713 The interface is as follows:
10714 Applications can use
10715 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
10716 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
10717 "off" is now the default.
10718 The library internally uses
10719 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
10720 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
10721 to disable memory-checking temporarily.
10723 Some inconsistent states that previously were possible (and were
10724 even the default) are now avoided.
10726 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
10727 with each memory chunk allocated; this is occasionally more helpful
10728 than just having a counter.
10730 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
10732 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
10736 *) Introduce "mode" for SSL structures (with defaults in SSL_CTX),
10737 which largely parallels "options", but is for changing API behaviour,
10738 whereas "options" are about protocol behaviour.
10739 Initial "mode" flags are:
10741 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when
10742 a single record has been written.
10743 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write
10744 retries use the same buffer location.
10745 (But all of the contents must be
10749 *) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options
10752 *) Fix problems with no-hmac etc.
10753 [Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>]
10755 *) New functions RSA_get_default_method(), RSA_set_method() and
10756 RSA_get_method(). These allows replacement of RSA_METHODs without having
10757 to mess around with the internals of an RSA structure.
10760 *) Fix memory leaks in DSA_do_sign and DSA_is_prime.
10761 Also really enable memory leak checks in openssl.c and in some
10763 [Chad C. Mulligan, Bodo Moeller]
10765 *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
10766 up the length of negative integers. This has now been simplified to just
10767 store the length when it is first determined and use it later, rather
10768 than trying to keep track of where data is copied and updating it to
10770 [Steve Henson, reported by Brien Wheeler
10771 <bwheeler@authentica-security.com>]
10773 *) Add a new function PKCS7_signatureVerify. This allows the verification
10774 of a PKCS#7 signature but with the signing certificate passed to the
10775 function itself. This contrasts with PKCS7_dataVerify which assumes the
10776 certificate is present in the PKCS#7 structure. This isn't always the
10777 case: certificates can be omitted from a PKCS#7 structure and be
10778 distributed by "out of band" means (such as a certificate database).
10781 *) Complete the PEM_* macros with DECLARE_PEM versions to replace the
10782 function prototypes in pem.h, also change util/mkdef.pl to add the
10783 necessary function names.
10786 *) mk1mf.pl (used by Windows builds) did not properly read the
10787 options set by Configure in the top level Makefile, and Configure
10788 was not even able to write more than one option correctly.
10789 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
10792 *) New functions CONF_load_bio() and CONF_load_fp() to allow a config
10793 file to be loaded from a BIO or FILE pointer. The BIO version will
10794 for example allow memory BIOs to contain config info.
10797 *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
10798 Whoever hopes to achieve shared-library compatibility across versions
10799 must use this, not the compile-time macro.
10800 (Exercise 0.9.4: Which is the minimum library version required by
10802 Note: All this applies only to multi-threaded programs, others don't
10806 *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests
10807 through a BIO pair triggered the default case, i.e.
10808 SSLerr(...,SSL_R_UNKNOWN_STATE).
10811 *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
10812 can use the SSL library even if none of the specific BIOs is
10816 *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
10817 for the encoded length.
10818 [Jeon KyoungHo <khjeon@sds.samsung.co.kr>]
10820 *) Add initial documentation of the X509V3 functions.
10823 *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and
10824 PEM_write_bio_PKCS8PrivateKey() that are equivalent to
10825 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
10826 secure PKCS#8 private key format with a high iteration count.
10829 *) Fix determination of Perl interpreter: A perl or perl5
10830 _directory_ in $PATH was also accepted as the interpreter.
10831 [Ralf S. Engelschall]
10833 *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking
10834 wrong with it but it was very old and did things like calling
10835 PEM_ASN1_read() directly and used MD5 for the hash not to mention some
10836 unusual formatting.
10839 *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed
10840 to use the new extension code.
10843 *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
10844 with macros. This should make it easier to change their form, add extra
10845 arguments etc. Fix a few PEM prototypes which didn't have cipher as a
10849 *) Add to configuration table a new entry that can specify an alternative
10850 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
10851 according to Mark Crispin <MRC@Panda.COM>.
10855 *) DES CBC did not update the IV. Weird.
10858 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
10859 Changing the behaviour of the former might break existing programs --
10860 where IV updating is needed, des_ncbc_encrypt can be used.
10863 *) When bntest is run from "make test" it drives bc to check its
10864 calculations, as well as internally checking them. If an internal check
10865 fails, it needs to cause bc to give a non-zero result or make test carries
10866 on without noticing the failure. Fixed.
10869 *) DES library cleanups.
10872 *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
10873 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
10874 ciphers. NOTE: although the key derivation function has been verified
10875 against some published test vectors it has not been extensively tested
10876 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
10880 *) Instead of "mkdir -p", which is not fully portable, use new
10881 Perl script "util/mkdir-p.pl".
10884 *) Rewrite the way password based encryption (PBE) is handled. It used to
10885 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
10886 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
10887 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
10888 the 'parameter' field of the AlgorithmIdentifier is passed to the
10889 underlying key generation function so it must do its own ASN1 parsing.
10890 This has also changed the EVP_PBE_CipherInit() function which now has a
10891 'parameter' argument instead of literal salt and iteration count values
10892 and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
10895 *) Support for PKCS#5 v1.5 compatible password based encryption algorithms
10896 and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
10897 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
10898 KEY" because this clashed with PKCS#8 unencrypted string. Since this
10899 value was just used as a "magic string" and not used directly its
10900 value doesn't matter.
10903 *) Introduce some semblance of const correctness to BN. Shame C doesn't
10907 *) "linux-sparc64" configuration (ultrapenguin).
10908 [Ray Miller <ray.miller@oucs.ox.ac.uk>]
10909 "linux-sparc" configuration.
10910 [Christian Forster <fo@hawo.stw.uni-erlangen.de>]
10912 *) config now generates no-xxx options for missing ciphers.
10915 *) Support the EBCDIC character set (work in progress).
10916 File ebcdic.c not yet included because it has a different license.
10917 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
10919 *) Support BS2000/OSD-POSIX.
10920 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
10922 *) Make callbacks for key generation use void * instead of char *.
10925 *) Make S/MIME samples compile (not yet tested).
10928 *) Additional typesafe stacks.
10931 *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
10935 Changes between 0.9.3 and 0.9.3a [29 May 1999]
10937 *) New configuration variant "sco5-gcc".
10939 *) Updated some demos.
10940 [Sean O Riordain, Wade Scholine]
10942 *) Add missing BIO_free at exit of pkcs12 application.
10945 *) Fix memory leak in conf.c.
10948 *) Updates for Win32 to assembler version of MD5.
10951 *) Set #! path to perl in apps/der_chop to where we found it
10952 instead of using a fixed path.
10955 *) SHA library changes for irix64-mips4-cc.
10958 *) Improvements for VMS support.
10962 Changes between 0.9.2b and 0.9.3 [24 May 1999]
10964 *) Bignum library bug fix. IRIX 6 passes "make test" now!
10965 This also avoids the problems with SC4.2 and unpatched SC5.
10966 [Andy Polyakov <appro@fy.chalmers.se>]
10968 *) New functions sk_num, sk_value and sk_set to replace the previous macros.
10969 These are required because of the typesafe stack would otherwise break
10970 existing code. If old code used a structure member which used to be STACK
10971 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
10972 sk_num or sk_value it would produce an error because the num, data members
10973 are not present in STACK_OF. Now it just produces a warning. sk_set
10974 replaces the old method of assigning a value to sk_value
10975 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
10976 that does this will no longer work (and should use sk_set instead) but
10977 this could be regarded as a "questionable" behaviour anyway.
10980 *) Fix most of the other PKCS#7 bugs. The "experimental" code can now
10981 correctly handle encrypted S/MIME data.
10984 *) Change type of various DES function arguments from des_cblock
10985 (which means, in function argument declarations, pointer to char)
10986 to des_cblock * (meaning pointer to array with 8 char elements),
10987 which allows the compiler to do more typechecking; it was like
10988 that back in SSLeay, but with lots of ugly casts.
10990 Introduce new type const_des_cblock.
10993 *) Reorganise the PKCS#7 library and get rid of some of the more obvious
10994 problems: find RecipientInfo structure that matches recipient certificate
10995 and initialise the ASN1 structures properly based on passed cipher.
10998 *) Belatedly make the BN tests actually check the results.
11001 *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
11002 to and from BNs: it was completely broken. New compilation option
11003 NEG_PUBKEY_BUG to allow for some broken certificates that encode public
11004 key elements as negative integers.
11007 *) Reorganize and speed up MD5.
11008 [Andy Polyakov <appro@fy.chalmers.se>]
11011 [Richard Levitte <richard@levitte.org>]
11013 *) New option -out to asn1parse to allow the parsed structure to be
11014 output to a file. This is most useful when combined with the -strparse
11015 option to examine the output of things like OCTET STRINGS.
11018 *) Make SSL library a little more fool-proof by not requiring any longer
11019 that SSL_set_{accept,connect}_state be called before
11020 SSL_{accept,connect} may be used (SSL_set_..._state is omitted
11021 in many applications because usually everything *appeared* to work as
11022 intended anyway -- now it really works as intended).
11025 *) Move openssl.cnf out of lib/.
11028 *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall
11029 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
11030 -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+
11031 [Ralf S. Engelschall]
11033 *) Various fixes to the EVP and PKCS#7 code. It may now be able to
11034 handle PKCS#7 enveloped data properly.
11035 [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve]
11037 *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
11038 copying pointers. The cert_st handling is changed by this in
11039 various ways (and thus what used to be known as ctx->default_cert
11040 is now called ctx->cert, since we don't resort to s->ctx->[default_]cert
11041 any longer when s->cert does not give us what we need).
11042 ssl_cert_instantiate becomes obsolete by this change.
11043 As soon as we've got the new code right (possibly it already is?),
11044 we have solved a couple of bugs of the earlier code where s->cert
11045 was used as if it could not have been shared with other SSL structures.
11047 Note that using the SSL API in certain dirty ways now will result
11048 in different behaviour than observed with earlier library versions:
11049 Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx)
11050 does not influence s as it used to.
11052 In order to clean up things more thoroughly, inside SSL_SESSION
11053 we don't use CERT any longer, but a new structure SESS_CERT
11054 that holds per-session data (if available); currently, this is
11055 the peer's certificate chain and, for clients, the server's certificate
11056 and temporary key. CERT holds only those values that can have
11057 meaningful defaults in an SSL_CTX.
11060 *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
11061 from the internal representation. Various PKCS#7 fixes: remove some
11062 evil casts and set the enc_dig_alg field properly based on the signing
11066 *) Allow PKCS#12 password to be set from the command line or the
11067 environment. Let 'ca' get its config file name from the environment
11068 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
11072 *) Allow certificate policies extension to use an IA5STRING for the
11073 organization field. This is contrary to the PKIX definition but
11074 VeriSign uses it and IE5 only recognises this form. Document 'x509'
11078 *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
11079 without disallowing inline assembler and the like for non-pedantic builds.
11082 *) Support Borland C++ builder.
11083 [Janez Jere <jj@void.si>, modified by Ulf Möller]
11085 *) Support Mingw32.
11088 *) SHA-1 cleanups and performance enhancements.
11089 [Andy Polyakov <appro@fy.chalmers.se>]
11091 *) Sparc v8plus assembler for the bignum library.
11092 [Andy Polyakov <appro@fy.chalmers.se>]
11094 *) Accept any -xxx and +xxx compiler options in Configure.
11097 *) Update HPUX configuration.
11100 *) Add missing sk_<type>_unshift() function to safestack.h
11101 [Ralf S. Engelschall]
11103 *) New function SSL_CTX_use_certificate_chain_file that sets the
11104 "extra_cert"s in addition to the certificate. (This makes sense
11105 only for "PEM" format files, as chains as a whole are not
11109 *) Support verify_depth from the SSL API.
11110 x509_vfy.c had what can be considered an off-by-one-error:
11111 Its depth (which was not part of the external interface)
11112 was actually counting the number of certificates in a chain;
11113 now it really counts the depth.
11116 *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
11117 instead of X509err, which often resulted in confusing error
11118 messages since the error codes are not globally unique
11119 (e.g. an alleged error in ssl3_accept when a certificate
11120 didn't match the private key).
11122 *) New function SSL_CTX_set_session_id_context that allows to set a default
11123 value (so that you don't need SSL_set_session_id_context for each
11124 connection using the SSL_CTX).
11127 *) OAEP decoding bug fix.
11130 *) Support INSTALL_PREFIX for package builders, as proposed by
11134 *) New Configure options "threads" and "no-threads". For systems
11135 where the proper compiler options are known (currently Solaris
11136 and Linux), "threads" is the default.
11139 *) New script util/mklink.pl as a faster substitute for util/mklink.sh.
11142 *) Install various scripts to $(OPENSSLDIR)/misc, not to
11143 $(INSTALLTOP)/bin -- they shouldn't clutter directories
11144 such as /usr/local/bin.
11147 *) "make linux-shared" to build shared libraries.
11148 [Niels Poppe <niels@netbox.org>]
11150 *) New Configure option no-<cipher> (rsa, idea, rc5, ...).
11153 *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
11154 extension adding in x509 utility.
11157 *) Remove NOPROTO sections and error code comments.
11160 *) Partial rewrite of the DEF file generator to now parse the ANSI
11164 *) New Configure options --prefix=DIR and --openssldir=DIR.
11167 *) Complete rewrite of the error code script(s). It is all now handled
11168 by one script at the top level which handles error code gathering,
11169 header rewriting and C source file generation. It should be much better
11170 than the old method: it now uses a modified version of Ulf's parser to
11171 read the ANSI prototypes in all header files (thus the old K&R definitions
11172 aren't needed for error creation any more) and do a better job of
11173 translating function codes into names. The old 'ASN1 error code imbedded
11174 in a comment' is no longer necessary and it doesn't use .err files which
11175 have now been deleted. Also the error code call doesn't have to appear all
11176 on one line (which resulted in some large lines...).
11179 *) Change #include filenames from <foo.h> to <openssl/foo.h>.
11182 *) Change behaviour of ssl2_read when facing length-0 packets: Don't return
11183 0 (which usually indicates a closed connection), but continue reading.
11186 *) Fix some race conditions.
11189 *) Add support for CRL distribution points extension. Add Certificate
11190 Policies and CRL distribution points documentation.
11193 *) Move the autogenerated header file parts to crypto/opensslconf.h.
11196 *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
11197 8 of keying material. Merlin has also confirmed interop with this fix
11198 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
11199 [Merlin Hughes <merlin@baltimore.ie>]
11201 *) Fix lots of warnings.
11202 [Richard Levitte <levitte@stacken.kth.se>]
11204 *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
11205 the directory spec didn't end with a LIST_SEPARATOR_CHAR.
11206 [Richard Levitte <levitte@stacken.kth.se>]
11208 *) Fix problems with sizeof(long) == 8.
11209 [Andy Polyakov <appro@fy.chalmers.se>]
11211 *) Change functions to ANSI C.
11214 *) Fix typos in error codes.
11215 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller]
11217 *) Remove defunct assembler files from Configure.
11220 *) SPARC v8 assembler BIGNUM implementation.
11221 [Andy Polyakov <appro@fy.chalmers.se>]
11223 *) Support for Certificate Policies extension: both print and set.
11224 Various additions to support the r2i method this uses.
11227 *) A lot of constification, and fix a bug in X509_NAME_oneline() that could
11228 return a const string when you are expecting an allocated buffer.
11231 *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
11232 types DirectoryString and DisplayText.
11235 *) Add code to allow r2i extensions to access the configuration database,
11236 add an LHASH database driver and add several ctx helper functions.
11239 *) Fix an evil bug in bn_expand2() which caused various BN functions to
11240 fail when they extended the size of a BIGNUM.
11243 *) Various utility functions to handle SXNet extension. Modify mkdef.pl to
11244 support typesafe stack.
11247 *) Fix typo in SSL_[gs]et_options().
11248 [Nils Frostberg <nils@medcom.se>]
11250 *) Delete various functions and files that belonged to the (now obsolete)
11251 old X509V3 handling code.
11254 *) New Configure option "rsaref".
11257 *) Don't auto-generate pem.h.
11260 *) Introduce type-safe ASN.1 SETs.
11263 *) Convert various additional casted stacks to type-safe STACK_OF() variants.
11264 [Ben Laurie, Ralf S. Engelschall, Steve Henson]
11266 *) Introduce type-safe STACKs. This will almost certainly break lots of code
11267 that links with OpenSSL (well at least cause lots of warnings), but fear
11268 not: the conversion is trivial, and it eliminates loads of evil casts. A
11269 few STACKed things have been converted already. Feel free to convert more.
11270 In the fullness of time, I'll do away with the STACK type altogether.
11273 *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate
11274 specified in <certfile> by updating the entry in the index.txt file.
11275 This way one no longer has to edit the index.txt file manually for
11276 revoking a certificate. The -revoke option does the gory details now.
11277 [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall]
11279 *) Fix `openssl crl -noout -text' combination where `-noout' killed the
11280 `-text' option at all and this way the `-noout -text' combination was
11281 inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'.
11282 [Ralf S. Engelschall]
11284 *) Make sure a corresponding plain text error message exists for the
11285 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
11286 verify callback function determined that a certificate was revoked.
11287 [Ralf S. Engelschall]
11289 *) Bugfix: In test/testenc, don't test "openssl <cipher>" for
11290 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test
11291 all available cipers including rc5, which was forgotten until now.
11292 In order to let the testing shell script know which algorithms
11293 are available, a new (up to now undocumented) command
11294 "openssl list-cipher-commands" is used.
11297 *) Bugfix: s_client occasionally would sleep in select() when
11298 it should have checked SSL_pending() first.
11301 *) New functions DSA_do_sign and DSA_do_verify to provide access to
11302 the raw DSA values prior to ASN.1 encoding.
11305 *) Tweaks to Configure
11306 [Niels Poppe <niels@netbox.org>]
11308 *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
11312 *) New variables $(RANLIB) and $(PERL) in the Makefiles.
11315 *) New config option to avoid instructions that are illegal on the 80386.
11316 The default code is faster, but requires at least a 486.
11319 *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
11320 SSL2_SERVER_VERSION (not used at all) macros, which are now the
11321 same as SSL2_VERSION anyway.
11324 *) New "-showcerts" option for s_client.
11327 *) Still more PKCS#12 integration. Add pkcs12 application to openssl
11328 application. Various cleanups and fixes.
11331 *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
11332 modify error routines to work internally. Add error codes and PBE init
11333 to library startup routines.
11336 *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and
11337 packing functions to asn1 and evp. Changed function names and error
11338 codes along the way.
11341 *) PKCS12 integration: and so it begins... First of several patches to
11342 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
11343 objects to objects.h
11346 *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1
11347 and display support for Thawte strong extranet extension.
11350 *) Add LinuxPPC support.
11351 [Jeff Dubrule <igor@pobox.org>]
11353 *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
11354 bn_div_words in alpha.s.
11355 [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie]
11357 *) Make sure the RSA OAEP test is skipped under -DRSAref because
11358 OAEP isn't supported when OpenSSL is built with RSAref.
11359 [Ulf Moeller <ulf@fitug.de>]
11361 *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
11362 so they no longer are missing under -DNOPROTO.
11363 [Soren S. Jorvang <soren@t.dk>]
11366 Changes between 0.9.1c and 0.9.2b [22 Mar 1999]
11368 *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
11369 doesn't work when the session is reused. Coming soon!
11372 *) Fix a security hole, that allows sessions to be reused in the wrong
11373 context thus bypassing client cert protection! All software that uses
11374 client certs and session caches in multiple contexts NEEDS PATCHING to
11375 allow session reuse! A fuller solution is in the works.
11376 [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)]
11378 *) Some more source tree cleanups (removed obsolete files
11379 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
11380 permission on "config" script to be executable) and a fix for the INSTALL
11382 [Ulf Moeller <ulf@fitug.de>]
11384 *) Remove some legacy and erroneous uses of malloc, free instead of
11386 [Lennart Bang <lob@netstream.se>, with minor changes by Steve]
11388 *) Make rsa_oaep_test return non-zero on error.
11389 [Ulf Moeller <ulf@fitug.de>]
11391 *) Add support for native Solaris shared libraries. Configure
11392 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
11393 if someone would make that last step automatic.
11394 [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>]
11396 *) ctx_size was not built with the right compiler during "make links". Fixed.
11399 *) Change the meaning of 'ALL' in the cipher list. It now means "everything
11400 except NULL ciphers". This means the default cipher list will no longer
11401 enable NULL ciphers. They need to be specifically enabled e.g. with
11402 the string "DEFAULT:eNULL".
11405 *) Fix to RSA private encryption routines: if p < q then it would
11406 occasionally produce an invalid result. This will only happen with
11407 externally generated keys because OpenSSL (and SSLeay) ensure p > q.
11410 *) Be less restrictive and allow also `perl util/perlpath.pl
11411 /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin',
11412 because this way one can also use an interpreter named `perl5' (which is
11413 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
11414 installed as `perl').
11415 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
11417 *) Let util/clean-depend.pl work also with older Perl 5.00x versions.
11418 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
11420 *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
11421 advapi32.lib to Win32 build and change the pem test comparison
11422 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
11423 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
11424 and crypto/des/ede_cbcm_enc.c.
11427 *) DES quad checksum was broken on big-endian architectures. Fixed.
11430 *) Comment out two functions in bio.h that aren't implemented. Fix up the
11431 Win32 test batch file so it (might) work again. The Win32 test batch file
11432 is horrible: I feel ill....
11435 *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
11436 in e_os.h. Audit of header files to check ANSI and non ANSI
11437 sections: 10 functions were absent from non ANSI section and not exported
11438 from Windows DLLs. Fixed up libeay.num for new functions.
11441 *) Make `openssl version' output lines consistent.
11442 [Ralf S. Engelschall]
11444 *) Fix Win32 symbol export lists for BIO functions: Added
11445 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
11446 to ms/libeay{16,32}.def.
11447 [Ralf S. Engelschall]
11449 *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
11450 fine under Unix and passes some trivial tests I've now added. But the
11451 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
11452 added to make sure no one expects that this stuff really works in the
11453 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources
11454 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
11456 [Ralf S. Engelschall]
11458 *) Fix the generation of two part addresses in perl.
11459 [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie]
11461 *) Add config entry for Linux on MIPS.
11462 [John Tobey <jtobey@channel1.com>]
11464 *) Make links whenever Configure is run, unless we are on Windoze.
11467 *) Permit extensions to be added to CRLs using crl_section in openssl.cnf.
11468 Currently only issuerAltName and AuthorityKeyIdentifier make any sense
11472 *) Add a useful kludge to allow package maintainers to specify compiler and
11473 other platforms details on the command line without having to patch the
11474 Configure script everytime: One now can use ``perl Configure
11475 <id>:<details>'', i.e. platform ids are allowed to have details appended
11476 to them (separated by colons). This is treated as there would be a static
11477 pre-configured entry in Configure's %table under key <id> with value
11478 <details> and ``perl Configure <id>'' is called. So, when you want to
11479 perform a quick test-compile under FreeBSD 3.1 with pgcc and without
11480 assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"''
11481 now, which overrides the FreeBSD-elf entry on-the-fly.
11482 [Ralf S. Engelschall]
11484 *) Disable new TLS1 ciphersuites by default: they aren't official yet.
11487 *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
11488 on the `perl Configure ...' command line. This way one can compile
11489 OpenSSL libraries with Position Independent Code (PIC) which is needed
11490 for linking it into DSOs.
11491 [Ralf S. Engelschall]
11493 *) Remarkably, export ciphers were totally broken and no-one had noticed!
11497 *) Cleaned up the LICENSE document: The official contact for any license
11498 questions now is the OpenSSL core team under openssl-core@openssl.org.
11499 And add a paragraph about the dual-license situation to make sure people
11500 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
11501 to the OpenSSL toolkit.
11502 [Ralf S. Engelschall]
11504 *) General source tree makefile cleanups: Made `making xxx in yyy...'
11505 display consistent in the source tree and replaced `/bin/rm' by `rm'.
11506 Additionally cleaned up the `make links' target: Remove unnecessary
11507 semicolons, subsequent redundant removes, inline point.sh into mklink.sh
11508 to speed processing and no longer clutter the display with confusing
11509 stuff. Instead only the actually done links are displayed.
11510 [Ralf S. Engelschall]
11512 *) Permit null encryption ciphersuites, used for authentication only. It used
11513 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
11514 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
11518 *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
11519 signed attributes when verifying signatures (this would break them),
11520 the detached data encoding was wrong and public keys obtained using
11521 X509_get_pubkey() weren't freed.
11524 *) Add text documentation for the BUFFER functions. Also added a work around
11525 to a Win95 console bug. This was triggered by the password read stuff: the
11526 last character typed gets carried over to the next fread(). If you were
11527 generating a new cert request using 'req' for example then the last
11528 character of the passphrase would be CR which would then enter the first
11532 *) Added the new `Includes OpenSSL Cryptography Software' button as
11533 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
11534 button and can be used by applications based on OpenSSL to show the
11535 relationship to the OpenSSL project.
11536 [Ralf S. Engelschall]
11538 *) Remove confusing variables in function signatures in files
11539 ssl/ssl_lib.c and ssl/ssl.h.
11540 [Lennart Bong <lob@kulthea.stacken.kth.se>]
11542 *) Don't install bss_file.c under PREFIX/include/
11543 [Lennart Bong <lob@kulthea.stacken.kth.se>]
11545 *) Get the Win32 compile working again. Modify mkdef.pl so it can handle
11546 functions that return function pointers and has support for NT specific
11547 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
11548 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
11549 unsigned to signed types: this was killing the Win32 compile.
11552 *) Add new certificate file to stack functions,
11553 SSL_add_dir_cert_subjects_to_stack() and
11554 SSL_add_file_cert_subjects_to_stack(). These largely supplant
11555 SSL_load_client_CA_file(), and can be used to add multiple certs easily
11556 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
11557 This means that Apache-SSL and similar packages don't have to mess around
11558 to add as many CAs as they want to the preferred list.
11561 *) Experiment with doxygen documentation. Currently only partially applied to
11563 See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with
11564 openssl.doxy as the configuration file.
11567 *) Get rid of remaining C++-style comments which strict C compilers hate.
11568 [Ralf S. Engelschall, pointed out by Carlos Amengual]
11570 *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
11571 compiled in by default: it has problems with large keys.
11574 *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
11575 DH private keys and/or callback functions which directly correspond to
11576 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
11577 is needed for applications which have to configure certificates on a
11578 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
11580 For the RSA certificate situation is makes no difference, but
11581 for the DSA certificate situation this fixes the "no shared cipher"
11582 problem where the OpenSSL cipher selection procedure failed because the
11583 temporary keys were not overtaken from the context and the API provided
11584 no way to reconfigure them.
11585 The new functions now let applications reconfigure the stuff and they
11586 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
11587 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new
11588 non-public-API function ssl_cert_instantiate() is used as a helper
11589 function and also to reduce code redundancy inside ssl_rsa.c.
11590 [Ralf S. Engelschall]
11592 *) Move s_server -dcert and -dkey options out of the undocumented feature
11593 area because they are useful for the DSA situation and should be
11594 recognized by the users.
11595 [Ralf S. Engelschall]
11597 *) Fix the cipher decision scheme for export ciphers: the export bits are
11598 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
11599 SSL_EXP_MASK. So, the original variable has to be used instead of the
11600 already masked variable.
11601 [Richard Levitte <levitte@stacken.kth.se>]
11603 *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c
11604 [Richard Levitte <levitte@stacken.kth.se>]
11606 *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
11607 from `int' to `unsigned int' because it's a length and initialized by
11608 EVP_DigestFinal() which expects an `unsigned int *'.
11609 [Richard Levitte <levitte@stacken.kth.se>]
11611 *) Don't hard-code path to Perl interpreter on shebang line of Configure
11612 script. Instead use the usual Shell->Perl transition trick.
11613 [Ralf S. Engelschall]
11615 *) Make `openssl x509 -noout -modulus' functional also for DSA certificates
11616 (in addition to RSA certificates) to match the behaviour of `openssl dsa
11617 -noout -modulus' as it's already the case for `openssl rsa -noout
11618 -modulus'. For RSA the -modulus is the real "modulus" while for DSA
11619 currently the public key is printed (a decision which was already done by
11620 `openssl dsa -modulus' in the past) which serves a similar purpose.
11621 Additionally the NO_RSA no longer completely removes the whole -modulus
11622 option; it now only avoids using the RSA stuff. Same applies to NO_DSA
11624 [Ralf S. Engelschall]
11626 *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
11627 BIO. See the source (crypto/evp/bio_ok.c) for more info.
11628 [Arne Ansper <arne@ats.cyber.ee>]
11630 *) Dump the old yucky req code that tried (and failed) to allow raw OIDs
11631 to be added. Now both 'req' and 'ca' can use new objects defined in the
11635 *) Add cool BIO that does syslog (or event log on NT).
11636 [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie]
11638 *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
11639 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
11640 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
11641 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
11644 *) Add preliminary config info for new extension code.
11647 *) Make RSA_NO_PADDING really use no padding.
11648 [Ulf Moeller <ulf@fitug.de>]
11650 *) Generate errors when private/public key check is done.
11653 *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
11654 for some CRL extensions and new objects added.
11657 *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private
11658 key usage extension and fuller support for authority key id.
11661 *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
11662 padding method for RSA, which is recommended for new applications in PKCS
11663 #1 v2.0 (RFC 2437, October 1998).
11664 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
11665 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
11666 against Bleichbacher's attack on RSA.
11667 [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
11670 *) Updates to the new SSL compression code
11671 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
11673 *) Fix so that the version number in the master secret, when passed
11674 via RSA, checks that if TLS was proposed, but we roll back to SSLv3
11675 (because the server will not accept higher), that the version number
11676 is 0x03,0x01, not 0x03,0x00
11677 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
11679 *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
11680 leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
11681 in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
11684 *) Support for RAW extensions where an arbitrary extension can be
11685 created by including its DER encoding. See apps/openssl.cnf for
11689 *) Make sure latest Perl versions don't interpret some generated C array
11690 code as Perl array code in the crypto/err/err_genc.pl script.
11691 [Lars Weber <3weber@informatik.uni-hamburg.de>]
11693 *) Modify ms/do_ms.bat to not generate assembly language makefiles since
11694 not many people have the assembler. Various Win32 compilation fixes and
11695 update to the INSTALL.W32 file with (hopefully) more accurate Win32
11696 build instructions.
11699 *) Modify configure script 'Configure' to automatically create crypto/date.h
11700 file under Win32 and also build pem.h from pem.org. New script
11701 util/mkfiles.pl to create the MINFO file on environments that can't do a
11702 'make files': perl util/mkfiles.pl >MINFO should work.
11705 *) Major rework of DES function declarations, in the pursuit of correctness
11706 and purity. As a result, many evil casts evaporated, and some weirdness,
11707 too. You may find this causes warnings in your code. Zapping your evil
11708 casts will probably fix them. Mostly.
11711 *) Fix for a typo in asn1.h. Bug fix to object creation script
11712 obj_dat.pl. It considered a zero in an object definition to mean
11713 "end of object": none of the objects in objects.h have any zeros
11714 so it wasn't spotted.
11715 [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>]
11717 *) Add support for Triple DES Cipher Block Chaining with Output Feedback
11718 Masking (CBCM). In the absence of test vectors, the best I have been able
11719 to do is check that the decrypt undoes the encrypt, so far. Send me test
11720 vectors if you have them.
11723 *) Correct calculation of key length for export ciphers (too much space was
11724 allocated for null ciphers). This has not been tested!
11727 *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage
11728 message is now correct (it understands "crypto" and "ssl" on its
11729 command line). There is also now an "update" option. This will update
11730 the util/ssleay.num and util/libeay.num files with any new functions.
11732 perl util/mkdef.pl crypto ssl update
11733 it will update them.
11736 *) Overhauled the Perl interface (perl/*):
11737 - ported BN stuff to OpenSSL's different BN library
11738 - made the perl/ source tree CVS-aware
11739 - renamed the package from SSLeay to OpenSSL (the files still contain
11740 their history because I've copied them in the repository)
11741 - removed obsolete files (the test scripts will be replaced
11742 by better Test::Harness variants in the future)
11743 [Ralf S. Engelschall]
11745 *) First cut for a very conservative source tree cleanup:
11746 1. merge various obsolete readme texts into doc/ssleay.txt
11747 where we collect the old documents and readme texts.
11748 2. remove the first part of files where I'm already sure that we no
11749 longer need them because of three reasons: either they are just temporary
11750 files which were left by Eric or they are preserved original files where
11751 I've verified that the diff is also available in the CVS via "cvs diff
11752 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
11753 the crypto/md/ stuff).
11754 [Ralf S. Engelschall]
11756 *) More extension code. Incomplete support for subject and issuer alt
11757 name, issuer and authority key id. Change the i2v function parameters
11758 and add an extra 'crl' parameter in the X509V3_CTX structure: guess
11759 what that's for :-) Fix to ASN1 macro which messed up
11760 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
11763 *) Preliminary support for ENUMERATED type. This is largely copied from the
11767 *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
11768 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
11770 *) Make sure `make rehash' target really finds the `openssl' program.
11771 [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
11773 *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
11774 like to hear about it if this slows down other processors.
11777 *) Add CygWin32 platform information to Configure script.
11778 [Alan Batie <batie@aahz.jf.intel.com>]
11780 *) Fixed ms/32all.bat script: `no_asm' -> `no-asm'
11781 [Rainer W. Gerling <gerling@mpg-gv.mpg.de>]
11783 *) New program nseq to manipulate netscape certificate sequences
11786 *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
11790 *) Fixes to BN code. Previously the default was to define BN_RECURSION
11791 but the BN code had some problems that would cause failures when
11792 doing certificate verification and some other functions.
11793 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
11795 *) Add ASN1 and PEM code to support netscape certificate sequences.
11798 *) Add ASN1 and PEM code to support netscape certificate sequences.
11801 *) Add several PKIX and private extended key usage OIDs.
11804 *) Modify the 'ca' program to handle the new extension code. Modify
11805 openssl.cnf for new extension format, add comments.
11808 *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
11809 and add a sample to openssl.cnf so req -x509 now adds appropriate
11813 *) Continued X509 V3 changes. Add to other makefiles, integrate with the
11814 error code, add initial support to X509_print() and x509 application.
11817 *) Takes a deep breath and start adding X509 V3 extension support code. Add
11818 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
11819 stuff is currently isolated and isn't even compiled yet.
11822 *) Continuing patches for GeneralizedTime. Fix up certificate and CRL
11823 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
11824 Removed the versions check from X509 routines when loading extensions:
11825 this allows certain broken certificates that don't set the version
11826 properly to be processed.
11829 *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
11830 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
11831 can still be regenerated with "make depend".
11834 *) Spelling mistake in C version of CAST-128.
11835 [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>]
11837 *) Changes to the error generation code. The perl script err-code.pl
11838 now reads in the old error codes and retains the old numbers, only
11839 adding new ones if necessary. It also only changes the .err files if new
11840 codes are added. The makefiles have been modified to only insert errors
11841 when needed (to avoid needlessly modifying header files). This is done
11842 by only inserting errors if the .err file is newer than the auto generated
11843 C file. To rebuild all the error codes from scratch (the old behaviour)
11844 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
11845 or delete all the .err files.
11848 *) CAST-128 was incorrectly implemented for short keys. The C version has
11849 been fixed, but is untested. The assembler versions are also fixed, but
11850 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
11851 to regenerate it if needed.
11852 [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
11853 Hagino <itojun@kame.net>]
11855 *) File was opened incorrectly in randfile.c.
11856 [Ulf Möller <ulf@fitug.de>]
11858 *) Beginning of support for GeneralizedTime. d2i, i2d, check and print
11859 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
11860 GeneralizedTime. ASN1_TIME is the proper type used in certificates et
11861 al: it's just almost always a UTCTime. Note this patch adds new error
11862 codes so do a "make errors" if there are problems.
11865 *) Correct Linux 1 recognition in config.
11866 [Ulf Möller <ulf@fitug.de>]
11868 *) Remove pointless MD5 hash when using DSA keys in ca.
11869 [Anonymous <nobody@replay.com>]
11871 *) Generate an error if given an empty string as a cert directory. Also
11872 generate an error if handed NULL (previously returned 0 to indicate an
11873 error, but didn't set one).
11874 [Ben Laurie, reported by Anonymous <nobody@replay.com>]
11876 *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
11879 *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
11880 parameters. This was causing a warning which killed off the Win32 compile.
11883 *) Remove C++ style comments from crypto/bn/bn_local.h.
11884 [Neil Costigan <neil.costigan@celocom.com>]
11886 *) The function OBJ_txt2nid was broken. It was supposed to return a nid
11887 based on a text string, looking up short and long names and finally
11888 "dot" format. The "dot" format stuff didn't work. Added new function
11889 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
11890 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
11891 OID is not part of the table.
11894 *) Add prototypes to X509 lookup/verify methods, fixing a bug in
11895 X509_LOOKUP_by_alias().
11898 *) Sort openssl functions by name.
11901 *) Get the gendsa program working (hopefully) and add it to app list. Remove
11902 encryption from sample DSA keys (in case anyone is interested the password
11906 *) Make _all_ *_free functions accept a NULL pointer.
11907 [Frans Heymans <fheymans@isaserver.be>]
11909 *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use
11911 [Anonymous <nobody@replay.com>]
11913 *) s_server should send the CAfile as acceptable CAs, not its own cert.
11914 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
11916 *) Don't blow it for numeric -newkey arguments to apps/req.
11917 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
11919 *) Temp key "for export" tests were wrong in s3_srvr.c.
11920 [Anonymous <nobody@replay.com>]
11922 *) Add prototype for temp key callback functions
11923 SSL_CTX_set_tmp_{rsa,dh}_callback().
11926 *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
11927 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
11930 *) X509_name_add_entry() freed the wrong thing after an error.
11931 [Arne Ansper <arne@ats.cyber.ee>]
11933 *) rsa_eay.c would attempt to free a NULL context.
11934 [Arne Ansper <arne@ats.cyber.ee>]
11936 *) BIO_s_socket() had a broken should_retry() on Windoze.
11937 [Arne Ansper <arne@ats.cyber.ee>]
11939 *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
11940 [Arne Ansper <arne@ats.cyber.ee>]
11942 *) Make sure the already existing X509_STORE->depth variable is initialized
11943 in X509_STORE_new(), but document the fact that this variable is still
11944 unused in the certificate verification process.
11945 [Ralf S. Engelschall]
11947 *) Fix the various library and apps files to free up pkeys obtained from
11948 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
11951 *) Fix reference counting in X509_PUBKEY_get(). This makes
11952 demos/maurice/example2.c work, amongst others, probably.
11953 [Steve Henson and Ben Laurie]
11955 *) First cut of a cleanup for apps/. First the `ssleay' program is now named
11956 `openssl' and second, the shortcut symlinks for the `openssl <command>'
11957 are no longer created. This way we have a single and consistent command
11958 line interface `openssl <command>', similar to `cvs <command>'.
11959 [Ralf S. Engelschall, Paul Sutton and Ben Laurie]
11961 *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
11962 BIT STRING wrapper always have zero unused bits.
11965 *) Add CA.pl, perl version of CA.sh, add extended key usage OID.
11968 *) Make the top-level INSTALL documentation easier to understand.
11971 *) Makefiles updated to exit if an error occurs in a sub-directory
11972 make (including if user presses ^C) [Paul Sutton]
11974 *) Make Montgomery context stuff explicit in RSA data structure.
11977 *) Fix build order of pem and err to allow for generated pem.h.
11980 *) Fix renumbering bug in X509_NAME_delete_entry().
11983 *) Enhanced the err-ins.pl script so it makes the error library number
11984 global and can add a library name. This is needed for external ASN1 and
11985 other error libraries.
11988 *) Fixed sk_insert which never worked properly.
11991 *) Fix ASN1 macros so they can handle indefinite length constructed
11992 EXPLICIT tags. Some non standard certificates use these: they can now
11996 *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
11997 into a single doc/ssleay.txt bundle. This way the information is still
11998 preserved but no longer messes up this directory. Now it's new room for
11999 the new set of documentation files.
12000 [Ralf S. Engelschall]
12002 *) SETs were incorrectly DER encoded. This was a major pain, because they
12003 shared code with SEQUENCEs, which aren't coded the same. This means that
12004 almost everything to do with SETs or SEQUENCEs has either changed name or
12005 number of arguments.
12006 [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>]
12008 *) Fix test data to work with the above.
12011 *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
12012 was already fixed by Eric for 0.9.1 it seems.
12013 [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>]
12015 *) Autodetect FreeBSD3.
12018 *) Fix various bugs in Configure. This affects the following platforms:
12022 unixware-2.0-pentium
12026 *) Eliminate generated files from CVS. Reorder tests to regenerate files
12027 before they are needed.
12030 *) Generate Makefile.ssl from Makefile.org (to keep CVS happy).
12034 Changes between 0.9.1b and 0.9.1c [23-Dec-1998]
12036 *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
12037 changed SSLeay to OpenSSL in version strings.
12038 [Ralf S. Engelschall]
12040 *) Some fixups to the top-level documents.
12043 *) Fixed the nasty bug where rsaref.h was not found under compile-time
12044 because the symlink to include/ was missing.
12045 [Ralf S. Engelschall]
12047 *) Incorporated the popular no-RSA/DSA-only patches
12048 which allow to compile a RSA-free SSLeay.
12049 [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall]
12051 *) Fixed nasty rehash problem under `make -f Makefile.ssl links'
12052 when "ssleay" is still not found.
12053 [Ralf S. Engelschall]
12055 *) Added more platforms to Configure: Cray T3E, HPUX 11,
12056 [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>]
12058 *) Updated the README file.
12059 [Ralf S. Engelschall]
12061 *) Added various .cvsignore files in the CVS repository subdirs
12062 to make a "cvs update" really silent.
12063 [Ralf S. Engelschall]
12065 *) Recompiled the error-definition header files and added
12066 missing symbols to the Win32 linker tables.
12067 [Ralf S. Engelschall]
12069 *) Cleaned up the top-level documents;
12070 o new files: CHANGES and LICENSE
12071 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
12072 o merged COPYRIGHT into LICENSE
12073 o removed obsolete TODO file
12074 o renamed MICROSOFT to INSTALL.W32
12075 [Ralf S. Engelschall]
12077 *) Removed dummy files from the 0.9.1b source tree:
12078 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
12079 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
12080 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
12081 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
12082 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
12083 [Ralf S. Engelschall]
12085 *) Added various platform portability fixes.
12088 *) The Genesis of the OpenSSL rpject:
12089 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
12090 Young and Tim J. Hudson created while they were working for C2Net until
12092 [The OpenSSL Project]
12095 Changes between 0.9.0b and 0.9.1b [not released]
12097 *) Updated a few CA certificates under certs/
12100 *) Changed some BIGNUM api stuff.
12103 *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
12104 DGUX x86, Linux Alpha, etc.
12107 *) New COMP library [crypto/comp/] for SSL Record Layer Compression:
12108 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
12112 *) Add -strparse option to asn1pars program which parses nested
12114 [Dr Stephen Henson <shenson@bigfoot.com>]
12116 *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
12119 *) DSA fix for "ca" program.
12122 *) Added "-genkey" option to "dsaparam" program.
12125 *) Added RIPE MD160 (rmd160) message digest.
12128 *) Added -a (all) option to "ssleay version" command.
12131 *) Added PLATFORM define which is the id given to Configure.
12134 *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
12137 *) Extended the ASN.1 parser routines.
12140 *) Extended BIO routines to support REUSEADDR, seek, tell, etc.
12143 *) Added a BN_CTX to the BN library.
12146 *) Fixed the weak key values in DES library
12149 *) Changed API in EVP library for cipher aliases.
12152 *) Added support for RC2/64bit cipher.
12155 *) Converted the lhash library to the crypto/mem.c functions.
12158 *) Added more recognized ASN.1 object ids.
12161 *) Added more RSA padding checks for SSL/TLS.
12164 *) Added BIO proxy/filter functionality.
12167 *) Added extra_certs to SSL_CTX which can be used
12168 send extra CA certificates to the client in the CA cert chain sending
12169 process. It can be configured with SSL_CTX_add_extra_chain_cert().
12172 *) Now Fortezza is denied in the authentication phase because
12173 this is key exchange mechanism is not supported by SSLeay at all.
12176 *) Additional PKCS1 checks.
12179 *) Support the string "TLSv1" for all TLS v1 ciphers.
12182 *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
12183 ex_data index of the SSL context in the X509_STORE_CTX ex_data.
12186 *) Fixed a few memory leaks.
12189 *) Fixed various code and comment typos.
12192 *) A minor bug in ssl/s3_clnt.c where there would always be 4 0
12193 bytes sent in the client random.
12194 [Edward Bishop <ebishop@spyglass.com>]