5 Changes between 1.0.2e and 1.1.0 [xx XXX xxxx]
7 *) Support for ChaCha20 and Poly1305 added to libcrypto and libssl.
10 *) New EC_KEY_METHOD, this replaces the older ECDSA_METHOD and ECDH_METHOD
11 and integrates ECDSA and ECDH functionality into EC. Implementations can
12 now redirect key generation and no longer need to convert to or from
15 Note: the ecdsa.h and ecdh.h headers are now no longer needed and just
16 include the ec.h header file instead.
19 *) Remove support for all 40 and 56 bit ciphers. This includes all the export
20 ciphers who are no longer supported and drops support the ephemeral RSA key
21 exchange. The LOW ciphers currently doesn't have any ciphers in it.
24 *) Make EVP_MD_CTX, EVP_MD and HMAC_CTX opaque. For HMAC_CTX, the
25 following constructors and destructors were added:
27 HMAC_CTX *HMAC_CTX_new(void);
28 void HMAC_CTX_free(HMAC_CTX *ctx);
30 For EVP_MD, a complete API to create, fill and destroy such
31 methods has been added. See EVP_MD_meth_new(3) for
35 1) HMAC_CTX_cleanup() and EVP_MD_CTX_cleanup() were removed,
36 HMAC_CTX_init() and EVP_MD_CTX_init() should be called instead
37 to reinitialise and already created structure. Also,
38 HMAC_CTX_init() and EVP_MD_CTX_init() now return 0 for failure
39 and 1 for success (they previously had the return type void).
40 2) For consistency with the majority of our object creators and
41 destructors, EVP_MD_CTX_(create|destroy) were renamed to
42 EVP_MD_CTX_(new|free). The old names are retained as macros
43 for deprecated builds.
46 *) Added ASYNC support. Libcrypto now includes the async sub-library to enable
47 cryptographic operations to be performed asynchronously as long as an
48 asynchronous capable engine is used. See the ASYNC_start_job() man page for
49 further details. Libssl has also had this capability integrated with the
50 introduction of the new mode SSL_MODE_ASYNC and associated error
51 SSL_ERROR_WANT_ASYNC. See the SSL_CTX_set_mode() and SSL_get_error() man
52 pages. This work was developed in partnership with Intel Corp.
55 *) SSL_{CTX_}set_ecdh_auto() has been removed and ECDH is support is
56 always enabled now. If you want to disable the support you should
57 exclude it using the list of supported ciphers.
60 *) SSL_{CTX}_set_tmp_ecdh() which can set 1 EC curve now internally calls
61 SSL_{CTX_}set1_curves() which can set a list.
64 *) Remove support for SSL_{CTX_}set_tmp_ecdh_callback(). You should set the
65 curve you want to support using SSL_{CTX_}set1_curves().
68 *) State machine rewrite. The state machine code has been significantly
69 refactored in order to remove much duplication of code and solve issues
70 with the old code (see ssl/statem/README for further details). This change
71 does have some associated API changes. Notably the SSL_state() function
72 has been removed and replaced by SSL_get_state which now returns an
73 "OSSL_HANDSHAKE_STATE" instead of an int. SSL_set_state() has been removed
74 altogether. The previous handshake states defined in ssl.h and ssl3.h have
78 *) All instances of the string "ssleay" in the public API were replaced
79 with OpenSSL (case-matching; e.g., OPENSSL_VERSION for #define's)
80 Some error codes related to internal RSA_eay API's were renamed.
83 *) The demo files in crypto/threads were moved to demo/threads.
86 *) Removed obsolete engines: 4758cca, aep, atalla, cswift, nuron and sureware.
89 *) New ASN.1 embed macro.
91 New ASN.1 macro ASN1_EMBED. This is the same as ASN1_SIMPLE except the
92 structure is not allocated: it is part of the parent. That is instead of
100 This reduces memory fragmentation and make it impossible to accidentally
101 set a mandatory field to NULL.
103 This currently only works for some fields specifically a SEQUENCE, CHOICE,
104 or ASN1_STRING type which is part of a parent SEQUENCE. Since it is
105 equivalent to ASN1_SIMPLE it cannot be tagged, OPTIONAL, SET OF or
109 *) Remove EVP_CHECK_DES_KEY, a compile-time option that never compiled.
112 *) Removed DES and RC4 ciphersuites from DEFAULT. Also removed RC2 although
113 in 1.0.2 EXPORT was already removed and the only RC2 ciphersuite is also
114 an EXPORT one. COMPLEMENTOFDEFAULT has been updated accordingly to add
115 DES and RC4 ciphersuites.
118 *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
119 This changes the decoding behaviour for some invalid messages,
120 though the change is mostly in the more lenient direction, and
121 legacy behaviour is preserved as much as possible.
124 *) Fix no-stdio build.
125 [ David Woodhouse <David.Woodhouse@intel.com> and also
126 Ivan Nestlerode <ivan.nestlerode@sonos.com> ]
128 *) New testing framework
129 The testing framework has been largely rewritten and is now using
130 perl and the perl modules Test::Harness and an extended variant of
131 Test::More called OpenSSL::Test to do its work. All test scripts in
132 test/ have been rewritten into test recipes, and all direct calls to
133 executables in test/Makefile have become individual recipes using the
134 simplified testing OpenSSL::Test::Simple.
136 For documentation on our testing modules, do:
138 perldoc test/testlib/OpenSSL/Test/Simple.pm
139 perldoc test/testlib/OpenSSL/Test.pm
143 *) In DSA_generate_parameters_ex, if the provided seed is too short,
145 [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>]
147 *) Rewrite PSK to support ECDHE_PSK, DHE_PSK and RSA_PSK. Add ciphersuites
148 from RFC4279, RFC4785, RFC5487, RFC5489.
150 Thanks to Christian J. Dietrich and Giuseppe D'Angelo for the
151 original RSA_PSK patch.
154 *) Dropped support for the SSL3_FLAGS_DELAY_CLIENT_FINISHED flag. This SSLeay
155 era flag was never set throughout the codebase (only read). Also removed
156 SSL3_FLAGS_POP_BUFFER which was only used if
157 SSL3_FLAGS_DELAY_CLIENT_FINISHED was also set.
160 *) Changed the default name options in the "ca", "crl", "req" and "x509"
161 to be "oneline" instead of "compat".
164 *) Remove SSL_OP_TLS_BLOCK_PADDING_BUG. This is SSLeay legacy, we're
165 not aware of clients that still exhibit this bug, and the workaround
166 hasn't been working properly for a while.
169 *) The return type of BIO_number_read() and BIO_number_written() as well as
170 the corresponding num_read and num_write members in the BIO structure has
171 changed from unsigned long to uint64_t. On platforms where an unsigned
172 long is 32 bits (e.g. Windows) these counters could overflow if >4Gb is
176 *) Given the pervasive nature of TLS extensions it is inadvisable to run
177 OpenSSL without support for them. It also means that maintaining
178 the OPENSSL_NO_TLSEXT option within the code is very invasive (and probably
179 not well tested). Therefore the OPENSSL_NO_TLSEXT option has been removed.
182 *) Removed support for the two export grade static DH ciphersuites
183 EXP-DH-RSA-DES-CBC-SHA and EXP-DH-DSS-DES-CBC-SHA. These two ciphersuites
184 were newly added (along with a number of other static DH ciphersuites) to
185 1.0.2. However the two export ones have *never* worked since they were
186 introduced. It seems strange in any case to be adding new export
187 ciphersuites, and given "logjam" it also does not seem correct to fix them.
190 *) Version negotiation has been rewritten. In particular SSLv23_method(),
191 SSLv23_client_method() and SSLv23_server_method() have been deprecated,
192 and turned into macros which simply call the new preferred function names
193 TLS_method(), TLS_client_method() and TLS_server_method(). All new code
194 should use the new names instead. Also as part of this change the ssl23.h
195 header file has been removed.
198 *) Support for Kerberos ciphersuites in TLS (RFC2712) has been removed. This
199 code and the associated standard is no longer considered fit-for-purpose.
202 *) RT2547 was closed. When generating a private key, try to make the
203 output file readable only by the owner. This behavior change might
204 be noticeable when interacting with other software.
206 *) Documented all exdata functions. Added CRYPTO_free_ex_index.
210 *) Added HTTP GET support to the ocsp command.
213 *) Changed default digest for the dgst and enc commands from MD5 to
217 *) RAND_pseudo_bytes has been deprecated. Users should use RAND_bytes instead.
220 *) Added support for TLS extended master secret from
221 draft-ietf-tls-session-hash-03.txt. Thanks for Alfredo Pironti for an
222 initial patch which was a great help during development.
225 *) All libssl internal structures have been removed from the public header
226 files, and the OPENSSL_NO_SSL_INTERN option has been removed (since it is
227 now redundant). Users should not attempt to access internal structures
228 directly. Instead they should use the provided API functions.
231 *) config has been changed so that by default OPENSSL_NO_DEPRECATED is used.
232 Access to deprecated functions can be re-enabled by running config with
233 "enable-deprecated". In addition applications wishing to use deprecated
234 functions must define OPENSSL_USE_DEPRECATED. Note that this new behaviour
235 will, by default, disable some transitive includes that previously existed
236 in the header files (e.g. ec.h will no longer, by default, include bn.h)
239 *) Added support for OCB mode. OpenSSL has been granted a patent license
240 compatible with the OpenSSL license for use of OCB. Details are available
241 at https://www.openssl.org/source/OCB-patent-grant-OpenSSL.pdf. Support
242 for OCB can be removed by calling config with no-ocb.
245 *) SSLv2 support has been removed. It still supports receiving a SSLv2
246 compatible client hello.
249 *) Increased the minimal RSA keysize from 256 to 512 bits [Rich Salz],
250 done while fixing the error code for the key-too-small case.
251 [Annie Yousar <a.yousar@informatik.hu-berlin.de>]
253 *) CA.sh has been removmed; use CA.pl instead.
256 *) Removed old DES API.
259 *) Remove various unsupported platforms:
265 Sinix/ReliantUNIX RM400
270 16-bit platforms such as WIN16
273 *) Clean up OPENSSL_NO_xxx #define's
274 Use setbuf() and remove OPENSSL_NO_SETVBUF_IONBF
275 Rename OPENSSL_SYSNAME_xxx to OPENSSL_SYS_xxx
276 OPENSSL_NO_EC{DH,DSA} merged into OPENSSL_NO_EC
277 OPENSSL_NO_RIPEMD160, OPENSSL_NO_RIPEMD merged into OPENSSL_NO_RMD160
278 OPENSSL_NO_FP_API merged into OPENSSL_NO_STDIO
279 Remove OPENSSL_NO_BIO OPENSSL_NO_BUFFER OPENSSL_NO_CHAIN_VERIFY
280 OPENSSL_NO_EVP OPENSSL_NO_FIPS_ERR OPENSSL_NO_HASH_COMP
281 OPENSSL_NO_LHASH OPENSSL_NO_OBJECT OPENSSL_NO_SPEED OPENSSL_NO_STACK
282 OPENSSL_NO_X509 OPENSSL_NO_X509_VERIFY
283 Remove MS_STATIC; it's a relic from platforms <32 bits.
286 *) Cleaned up dead code
287 Remove all but one '#ifdef undef' which is to be looked at.
290 *) Clean up calling of xxx_free routines.
291 Just like free(), fix most of the xxx_free routines to accept
292 NULL. Remove the non-null checks from callers. Save much code.
295 *) Add secure heap for storage of private keys (when possible).
296 Add BIO_s_secmem(), CBIGNUM, etc.
297 Contributed by Akamai Technologies under our Corporate CLA.
300 *) Experimental support for a new, fast, unbiased prime candidate generator,
301 bn_probable_prime_dh_coprime(). Not currently used by any prime generator.
302 [Felix Laurie von Massenbach <felix@erbridge.co.uk>]
304 *) New output format NSS in the sess_id command line tool. This allows
305 exporting the session id and the master key in NSS keylog format.
306 [Martin Kaiser <martin@kaiser.cx>]
308 *) Harmonize version and its documentation. -f flag is used to display
310 [mancha <mancha1@zoho.com>]
312 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
313 in i2d_ECPrivateKey. Thanks to Ted Unangst for feedback on this issue.
314 [mancha <mancha1@zoho.com>]
316 *) Fix some double frees. These are not thought to be exploitable.
317 [mancha <mancha1@zoho.com>]
319 *) A missing bounds check in the handling of the TLS heartbeat extension
320 can be used to reveal up to 64k of memory to a connected client or
323 Thanks for Neel Mehta of Google Security for discovering this bug and to
324 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
325 preparing the fix (CVE-2014-0160)
326 [Adam Langley, Bodo Moeller]
328 *) Fix for the attack described in the paper "Recovering OpenSSL
329 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
330 by Yuval Yarom and Naomi Benger. Details can be obtained from:
331 http://eprint.iacr.org/2014/140
333 Thanks to Yuval Yarom and Naomi Benger for discovering this
334 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
335 [Yuval Yarom and Naomi Benger]
337 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
338 this fixes a limitation in previous versions of OpenSSL.
341 *) Experimental encrypt-then-mac support.
343 Experimental support for encrypt then mac from
344 draft-gutmann-tls-encrypt-then-mac-02.txt
346 To enable it set the appropriate extension number (0x42 for the test
347 server) using e.g. -DTLSEXT_TYPE_encrypt_then_mac=0x42
349 For non-compliant peers (i.e. just about everything) this should have no
352 WARNING: EXPERIMENTAL, SUBJECT TO CHANGE.
356 *) Add EVP support for key wrapping algorithms, to avoid problems with
357 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
358 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
359 algorithms and include tests cases.
362 *) Extend CMS code to support RSA-PSS signatures and RSA-OAEP for
366 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
367 MGF1 digest and OAEP label.
370 *) Make openssl verify return errors.
371 [Chris Palmer <palmer@google.com> and Ben Laurie]
373 *) New function ASN1_TIME_diff to calculate the difference between two
374 ASN1_TIME structures or one structure and the current time.
377 *) Update fips_test_suite to support multiple command line options. New
378 test to induce all self test errors in sequence and check expected
382 *) Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and
383 sign or verify all in one operation.
386 *) Add fips_algvs: a multicall fips utility incorporating all the algorithm
387 test programs and fips_test_suite. Includes functionality to parse
388 the minimal script output of fipsalgest.pl directly.
391 *) Add authorisation parameter to FIPS_module_mode_set().
394 *) Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves.
397 *) Use separate DRBG fields for internal and external flags. New function
398 FIPS_drbg_health_check() to perform on demand health checking. Add
399 generation tests to fips_test_suite with reduced health check interval to
400 demonstrate periodic health checking. Add "nodh" option to
401 fips_test_suite to skip very slow DH test.
404 *) New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers
408 *) More extensive health check for DRBG checking many more failure modes.
409 New function FIPS_selftest_drbg_all() to handle every possible DRBG
410 combination: call this in fips_test_suite.
413 *) Add support for Dual EC DRBG from SP800-90. Update DRBG algorithm test
414 and POST to handle Dual EC cases.
417 *) Add support for canonical generation of DSA parameter 'g'. See
420 *) Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
421 POST to handle HMAC cases.
424 *) Add functions FIPS_module_version() and FIPS_module_version_text()
425 to return numerical and string versions of the FIPS module number.
428 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
429 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implemented
430 outside the validated module in the FIPS capable OpenSSL.
433 *) Minor change to DRBG entropy callback semantics. In some cases
434 there is no multiple of the block length between min_len and
435 max_len. Allow the callback to return more than max_len bytes
436 of entropy but discard any extra: it is the callback's responsibility
437 to ensure that the extra data discarded does not impact the
438 requested amount of entropy.
441 *) Add PRNG security strength checks to RSA, DSA and ECDSA using
442 information in FIPS186-3, SP800-57 and SP800-131A.
445 *) CCM support via EVP. Interface is very similar to GCM case except we
446 must supply all data in one chunk (i.e. no update, final) and the
447 message length must be supplied if AAD is used. Add algorithm test
451 *) Initial version of POST overhaul. Add POST callback to allow the status
452 of POST to be monitored and/or failures induced. Modify fips_test_suite
453 to use callback. Always run all selftests even if one fails.
456 *) XTS support including algorithm test driver in the fips_gcmtest program.
457 Note: this does increase the maximum key length from 32 to 64 bytes but
458 there should be no binary compatibility issues as existing applications
459 will never use XTS mode.
462 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
463 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
464 performs algorithm blocking for unapproved PRNG types. Also do not
465 set PRNG type in FIPS_mode_set(): leave this to the application.
466 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
467 the standard OpenSSL PRNG: set additional data to a date time vector.
470 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
471 This shouldn't present any incompatibility problems because applications
472 shouldn't be using these directly and any that are will need to rethink
473 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
476 *) Extensive self tests and health checking required by SP800-90 DRBG.
477 Remove strength parameter from FIPS_drbg_instantiate and always
478 instantiate at maximum supported strength.
481 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
484 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
487 *) New function DH_compute_key_padded() to compute a DH key and pad with
488 leading zeroes if needed: this complies with SP800-56A et al.
491 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
492 anything, incomplete, subject to change and largely untested at present.
495 *) Modify fipscanisteronly build option to only build the necessary object
496 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
499 *) Add experimental option FIPSSYMS to give all symbols in
500 fipscanister.o and FIPS or fips prefix. This will avoid
501 conflicts with future versions of OpenSSL. Add perl script
502 util/fipsas.pl to preprocess assembly language source files
503 and rename any affected symbols.
506 *) Add selftest checks and algorithm block of non-fips algorithms in
507 FIPS mode. Remove DES2 from selftests.
510 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
511 return internal method without any ENGINE dependencies. Add new
512 tiny fips sign and verify functions.
515 *) New build option no-ec2m to disable characteristic 2 code.
518 *) New build option "fipscanisteronly". This only builds fipscanister.o
519 and (currently) associated fips utilities. Uses the file Makefile.fips
520 instead of Makefile.org as the prototype.
523 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
524 Update fips_gcmtest to use IV generator.
527 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
528 setting output buffer to NULL. The *Final function must be
529 called although it will not retrieve any additional data. The tag
530 can be set or retrieved with a ctrl. The IV length is by default 12
531 bytes (96 bits) but can be set to an alternative value. If the IV
532 length exceeds the maximum IV length (currently 16 bytes) it cannot be
536 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
537 underlying do_cipher function handles all cipher semantics itself
538 including padding and finalisation. This is useful if (for example)
539 an ENGINE cipher handles block padding itself. The behaviour of
540 do_cipher is subtly changed if this flag is set: the return value
541 is the number of characters written to the output buffer (zero is
542 no longer an error code) or a negative error code. Also if the
543 input buffer is NULL and length 0 finalisation should be performed.
546 *) If a candidate issuer certificate is already part of the constructed
547 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
550 *) Improve forward-security support: add functions
552 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
553 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
555 for use by SSL/TLS servers; the callback function will be called whenever a
556 new session is created, and gets to decide whether the session may be
557 cached to make it resumable (return 0) or not (return 1). (As by the
558 SSL/TLS protocol specifications, the session_id sent by the server will be
559 empty to indicate that the session is not resumable; also, the server will
560 not generate RFC 4507 (RFC 5077) session tickets.)
562 A simple reasonable callback implementation is to return is_forward_secure.
563 This parameter will be set to 1 or 0 depending on the ciphersuite selected
564 by the SSL/TLS server library, indicating whether it can provide forward
566 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
568 *) New -verify_name option in command line utilities to set verification
572 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
573 Add CMAC pkey methods.
576 *) Experimental renegotiation in s_server -www mode. If the client
577 browses /reneg connection is renegotiated. If /renegcert it is
578 renegotiated requesting a certificate.
581 *) Add an "external" session cache for debugging purposes to s_server. This
582 should help trace issues which normally are only apparent in deployed
583 multi-process servers.
586 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
587 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
588 BIO_set_cipher() and some obscure PEM functions were changed so they
589 can now return an error. The RAND changes required a change to the
590 RAND_METHOD structure.
593 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
594 a gcc attribute to warn if the result of a function is ignored. This
595 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
596 whose return value is often ignored.
599 Changes between 1.0.2d and 1.0.2e [3 Dec 2015]
601 *) BN_mod_exp may produce incorrect results on x86_64
603 There is a carry propagating bug in the x86_64 Montgomery squaring
604 procedure. No EC algorithms are affected. Analysis suggests that attacks
605 against RSA and DSA as a result of this defect would be very difficult to
606 perform and are not believed likely. Attacks against DH are considered just
607 feasible (although very difficult) because most of the work necessary to
608 deduce information about a private key may be performed offline. The amount
609 of resources required for such an attack would be very significant and
610 likely only accessible to a limited number of attackers. An attacker would
611 additionally need online access to an unpatched system using the target
612 private key in a scenario with persistent DH parameters and a private
613 key that is shared between multiple clients. For example this can occur by
614 default in OpenSSL DHE based SSL/TLS ciphersuites.
616 This issue was reported to OpenSSL by Hanno Böck.
620 *) Certificate verify crash with missing PSS parameter
622 The signature verification routines will crash with a NULL pointer
623 dereference if presented with an ASN.1 signature using the RSA PSS
624 algorithm and absent mask generation function parameter. Since these
625 routines are used to verify certificate signature algorithms this can be
626 used to crash any certificate verification operation and exploited in a
627 DoS attack. Any application which performs certificate verification is
628 vulnerable including OpenSSL clients and servers which enable client
631 This issue was reported to OpenSSL by Loïc Jonas Etienne (Qnective AG).
635 *) X509_ATTRIBUTE memory leak
637 When presented with a malformed X509_ATTRIBUTE structure OpenSSL will leak
638 memory. This structure is used by the PKCS#7 and CMS routines so any
639 application which reads PKCS#7 or CMS data from untrusted sources is
640 affected. SSL/TLS is not affected.
642 This issue was reported to OpenSSL by Adam Langley (Google/BoringSSL) using
647 *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
648 This changes the decoding behaviour for some invalid messages,
649 though the change is mostly in the more lenient direction, and
650 legacy behaviour is preserved as much as possible.
653 *) In DSA_generate_parameters_ex, if the provided seed is too short,
655 [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>]
657 Changes between 1.0.2c and 1.0.2d [9 Jul 2015]
659 *) Alternate chains certificate forgery
661 During certificate verfification, OpenSSL will attempt to find an
662 alternative certificate chain if the first attempt to build such a chain
663 fails. An error in the implementation of this logic can mean that an
664 attacker could cause certain checks on untrusted certificates to be
665 bypassed, such as the CA flag, enabling them to use a valid leaf
666 certificate to act as a CA and "issue" an invalid certificate.
668 This issue was reported to OpenSSL by Adam Langley/David Benjamin
672 Changes between 1.0.2b and 1.0.2c [12 Jun 2015]
674 *) Fix HMAC ABI incompatibility. The previous version introduced an ABI
675 incompatibility in the handling of HMAC. The previous ABI has now been
679 Changes between 1.0.2a and 1.0.2b [11 Jun 2015]
681 *) Malformed ECParameters causes infinite loop
683 When processing an ECParameters structure OpenSSL enters an infinite loop
684 if the curve specified is over a specially malformed binary polynomial
687 This can be used to perform denial of service against any
688 system which processes public keys, certificate requests or
689 certificates. This includes TLS clients and TLS servers with
690 client authentication enabled.
692 This issue was reported to OpenSSL by Joseph Barr-Pixton.
696 *) Exploitable out-of-bounds read in X509_cmp_time
698 X509_cmp_time does not properly check the length of the ASN1_TIME
699 string and can read a few bytes out of bounds. In addition,
700 X509_cmp_time accepts an arbitrary number of fractional seconds in the
703 An attacker can use this to craft malformed certificates and CRLs of
704 various sizes and potentially cause a segmentation fault, resulting in
705 a DoS on applications that verify certificates or CRLs. TLS clients
706 that verify CRLs are affected. TLS clients and servers with client
707 authentication enabled may be affected if they use custom verification
710 This issue was reported to OpenSSL by Robert Swiecki (Google), and
711 independently by Hanno Böck.
715 *) PKCS7 crash with missing EnvelopedContent
717 The PKCS#7 parsing code does not handle missing inner EncryptedContent
718 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs
719 with missing content and trigger a NULL pointer dereference on parsing.
721 Applications that decrypt PKCS#7 data or otherwise parse PKCS#7
722 structures from untrusted sources are affected. OpenSSL clients and
723 servers are not affected.
725 This issue was reported to OpenSSL by Michal Zalewski (Google).
729 *) CMS verify infinite loop with unknown hash function
731 When verifying a signedData message the CMS code can enter an infinite loop
732 if presented with an unknown hash function OID. This can be used to perform
733 denial of service against any system which verifies signedData messages using
735 This issue was reported to OpenSSL by Johannes Bauer.
739 *) Race condition handling NewSessionTicket
741 If a NewSessionTicket is received by a multi-threaded client when attempting to
742 reuse a previous ticket then a race condition can occur potentially leading to
743 a double free of the ticket data.
747 *) Only support 256-bit or stronger elliptic curves with the
748 'ecdh_auto' setting (server) or by default (client). Of supported
749 curves, prefer P-256 (both).
752 Changes between 1.0.2 and 1.0.2a [19 Mar 2015]
754 *) ClientHello sigalgs DoS fix
756 If a client connects to an OpenSSL 1.0.2 server and renegotiates with an
757 invalid signature algorithms extension a NULL pointer dereference will
758 occur. This can be exploited in a DoS attack against the server.
760 This issue was was reported to OpenSSL by David Ramos of Stanford
763 [Stephen Henson and Matt Caswell]
765 *) Multiblock corrupted pointer fix
767 OpenSSL 1.0.2 introduced the "multiblock" performance improvement. This
768 feature only applies on 64 bit x86 architecture platforms that support AES
769 NI instructions. A defect in the implementation of "multiblock" can cause
770 OpenSSL's internal write buffer to become incorrectly set to NULL when
771 using non-blocking IO. Typically, when the user application is using a
772 socket BIO for writing, this will only result in a failed connection.
773 However if some other BIO is used then it is likely that a segmentation
774 fault will be triggered, thus enabling a potential DoS attack.
776 This issue was reported to OpenSSL by Daniel Danner and Rainer Mueller.
780 *) Segmentation fault in DTLSv1_listen fix
782 The DTLSv1_listen function is intended to be stateless and processes the
783 initial ClientHello from many peers. It is common for user code to loop
784 over the call to DTLSv1_listen until a valid ClientHello is received with
785 an associated cookie. A defect in the implementation of DTLSv1_listen means
786 that state is preserved in the SSL object from one invocation to the next
787 that can lead to a segmentation fault. Errors processing the initial
788 ClientHello can trigger this scenario. An example of such an error could be
789 that a DTLS1.0 only client is attempting to connect to a DTLS1.2 only
792 This issue was reported to OpenSSL by Per Allansson.
796 *) Segmentation fault in ASN1_TYPE_cmp fix
798 The function ASN1_TYPE_cmp will crash with an invalid read if an attempt is
799 made to compare ASN.1 boolean types. Since ASN1_TYPE_cmp is used to check
800 certificate signature algorithm consistency this can be used to crash any
801 certificate verification operation and exploited in a DoS attack. Any
802 application which performs certificate verification is vulnerable including
803 OpenSSL clients and servers which enable client authentication.
807 *) Segmentation fault for invalid PSS parameters fix
809 The signature verification routines will crash with a NULL pointer
810 dereference if presented with an ASN.1 signature using the RSA PSS
811 algorithm and invalid parameters. Since these routines are used to verify
812 certificate signature algorithms this can be used to crash any
813 certificate verification operation and exploited in a DoS attack. Any
814 application which performs certificate verification is vulnerable including
815 OpenSSL clients and servers which enable client authentication.
817 This issue was was reported to OpenSSL by Brian Carpenter.
821 *) ASN.1 structure reuse memory corruption fix
823 Reusing a structure in ASN.1 parsing may allow an attacker to cause
824 memory corruption via an invalid write. Such reuse is and has been
825 strongly discouraged and is believed to be rare.
827 Applications that parse structures containing CHOICE or ANY DEFINED BY
828 components may be affected. Certificate parsing (d2i_X509 and related
829 functions) are however not affected. OpenSSL clients and servers are
834 *) PKCS7 NULL pointer dereferences fix
836 The PKCS#7 parsing code does not handle missing outer ContentInfo
837 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs with
838 missing content and trigger a NULL pointer dereference on parsing.
840 Applications that verify PKCS#7 signatures, decrypt PKCS#7 data or
841 otherwise parse PKCS#7 structures from untrusted sources are
842 affected. OpenSSL clients and servers are not affected.
844 This issue was reported to OpenSSL by Michal Zalewski (Google).
848 *) DoS via reachable assert in SSLv2 servers fix
850 A malicious client can trigger an OPENSSL_assert (i.e., an abort) in
851 servers that both support SSLv2 and enable export cipher suites by sending
852 a specially crafted SSLv2 CLIENT-MASTER-KEY message.
854 This issue was discovered by Sean Burford (Google) and Emilia Käsper
855 (OpenSSL development team).
859 *) Empty CKE with client auth and DHE fix
861 If client auth is used then a server can seg fault in the event of a DHE
862 ciphersuite being selected and a zero length ClientKeyExchange message
863 being sent by the client. This could be exploited in a DoS attack.
867 *) Handshake with unseeded PRNG fix
869 Under certain conditions an OpenSSL 1.0.2 client can complete a handshake
870 with an unseeded PRNG. The conditions are:
871 - The client is on a platform where the PRNG has not been seeded
872 automatically, and the user has not seeded manually
873 - A protocol specific client method version has been used (i.e. not
874 SSL_client_methodv23)
875 - A ciphersuite is used that does not require additional random data from
876 the PRNG beyond the initial ClientHello client random (e.g. PSK-RC4-SHA).
878 If the handshake succeeds then the client random that has been used will
879 have been generated from a PRNG with insufficient entropy and therefore the
880 output may be predictable.
882 For example using the following command with an unseeded openssl will
883 succeed on an unpatched platform:
885 openssl s_client -psk 1a2b3c4d -tls1_2 -cipher PSK-RC4-SHA
889 *) Use After Free following d2i_ECPrivatekey error fix
891 A malformed EC private key file consumed via the d2i_ECPrivateKey function
892 could cause a use after free condition. This, in turn, could cause a double
893 free in several private key parsing functions (such as d2i_PrivateKey
894 or EVP_PKCS82PKEY) and could lead to a DoS attack or memory corruption
895 for applications that receive EC private keys from untrusted
896 sources. This scenario is considered rare.
898 This issue was discovered by the BoringSSL project and fixed in their
903 *) X509_to_X509_REQ NULL pointer deref fix
905 The function X509_to_X509_REQ will crash with a NULL pointer dereference if
906 the certificate key is invalid. This function is rarely used in practice.
908 This issue was discovered by Brian Carpenter.
912 *) Removed the export ciphers from the DEFAULT ciphers
915 Changes between 1.0.1l and 1.0.2 [22 Jan 2015]
917 *) Facilitate "universal" ARM builds targeting range of ARM ISAs, e.g.
918 ARMv5 through ARMv8, as opposite to "locking" it to single one.
919 So far those who have to target multiple plaforms would compromise
920 and argue that binary targeting say ARMv5 would still execute on
921 ARMv8. "Universal" build resolves this compromise by providing
922 near-optimal performance even on newer platforms.
925 *) Accelerated NIST P-256 elliptic curve implementation for x86_64
926 (other platforms pending).
927 [Shay Gueron & Vlad Krasnov (Intel Corp), Andy Polyakov]
929 *) Add support for the SignedCertificateTimestampList certificate and
930 OCSP response extensions from RFC6962.
933 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
934 for corner cases. (Certain input points at infinity could lead to
935 bogus results, with non-infinity inputs mapped to infinity too.)
938 *) Initial support for PowerISA 2.0.7, first implemented in POWER8.
939 This covers AES, SHA256/512 and GHASH. "Initial" means that most
940 common cases are optimized and there still is room for further
941 improvements. Vector Permutation AES for Altivec is also added.
944 *) Add support for little-endian ppc64 Linux target.
945 [Marcelo Cerri (IBM)]
947 *) Initial support for AMRv8 ISA crypto extensions. This covers AES,
948 SHA1, SHA256 and GHASH. "Initial" means that most common cases
949 are optimized and there still is room for further improvements.
950 Both 32- and 64-bit modes are supported.
951 [Andy Polyakov, Ard Biesheuvel (Linaro)]
953 *) Improved ARMv7 NEON support.
956 *) Support for SPARC Architecture 2011 crypto extensions, first
957 implemented in SPARC T4. This covers AES, DES, Camellia, SHA1,
958 SHA256/512, MD5, GHASH and modular exponentiation.
959 [Andy Polyakov, David Miller]
961 *) Accelerated modular exponentiation for Intel processors, a.k.a.
963 [Shay Gueron & Vlad Krasnov (Intel Corp)]
965 *) Support for new and upcoming Intel processors, including AVX2,
966 BMI and SHA ISA extensions. This includes additional "stitched"
967 implementations, AESNI-SHA256 and GCM, and multi-buffer support
970 This work was sponsored by Intel Corp.
973 *) Support for DTLS 1.2. This adds two sets of DTLS methods: DTLS_*_method()
974 supports both DTLS 1.2 and 1.0 and should use whatever version the peer
975 supports and DTLSv1_2_*_method() which supports DTLS 1.2 only.
978 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
979 this fixes a limiation in previous versions of OpenSSL.
982 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
983 MGF1 digest and OAEP label.
986 *) Add EVP support for key wrapping algorithms, to avoid problems with
987 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
988 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
989 algorithms and include tests cases.
992 *) Add functions to allocate and set the fields of an ECDSA_METHOD
994 [Douglas E. Engert, Steve Henson]
996 *) New functions OPENSSL_gmtime_diff and ASN1_TIME_diff to find the
997 difference in days and seconds between two tm or ASN1_TIME structures.
1000 *) Add -rev test option to s_server to just reverse order of characters
1001 received by client and send back to server. Also prints an abbreviated
1002 summary of the connection parameters.
1005 *) New option -brief for s_client and s_server to print out a brief summary
1006 of connection parameters.
1009 *) Add callbacks for arbitrary TLS extensions.
1010 [Trevor Perrin <trevp@trevp.net> and Ben Laurie]
1012 *) New option -crl_download in several openssl utilities to download CRLs
1013 from CRLDP extension in certificates.
1016 *) New options -CRL and -CRLform for s_client and s_server for CRLs.
1019 *) New function X509_CRL_diff to generate a delta CRL from the difference
1020 of two full CRLs. Add support to "crl" utility.
1023 *) New functions to set lookup_crls function and to retrieve
1024 X509_STORE from X509_STORE_CTX.
1027 *) Print out deprecated issuer and subject unique ID fields in
1031 *) Extend OCSP I/O functions so they can be used for simple general purpose
1032 HTTP as well as OCSP. New wrapper function which can be used to download
1033 CRLs using the OCSP API.
1036 *) Delegate command line handling in s_client/s_server to SSL_CONF APIs.
1039 *) SSL_CONF* functions. These provide a common framework for application
1040 configuration using configuration files or command lines.
1043 *) SSL/TLS tracing code. This parses out SSL/TLS records using the
1044 message callback and prints the results. Needs compile time option
1045 "enable-ssl-trace". New options to s_client and s_server to enable
1049 *) New ctrl and macro to retrieve supported points extensions.
1050 Print out extension in s_server and s_client.
1053 *) New functions to retrieve certificate signature and signature
1057 *) Add functions to retrieve and manipulate the raw cipherlist sent by a
1061 *) New Suite B modes for TLS code. These use and enforce the requirements
1062 of RFC6460: restrict ciphersuites, only permit Suite B algorithms and
1063 only use Suite B curves. The Suite B modes can be set by using the
1064 strings "SUITEB128", "SUITEB192" or "SUITEB128ONLY" for the cipherstring.
1067 *) New chain verification flags for Suite B levels of security. Check
1068 algorithms are acceptable when flags are set in X509_verify_cert.
1071 *) Make tls1_check_chain return a set of flags indicating checks passed
1072 by a certificate chain. Add additional tests to handle client
1073 certificates: checks for matching certificate type and issuer name
1077 *) If an attempt is made to use a signature algorithm not in the peer
1078 preference list abort the handshake. If client has no suitable
1079 signature algorithms in response to a certificate request do not
1080 use the certificate.
1083 *) If server EC tmp key is not in client preference list abort handshake.
1086 *) Add support for certificate stores in CERT structure. This makes it
1087 possible to have different stores per SSL structure or one store in
1088 the parent SSL_CTX. Include distint stores for certificate chain
1089 verification and chain building. New ctrl SSL_CTRL_BUILD_CERT_CHAIN
1090 to build and store a certificate chain in CERT structure: returing
1091 an error if the chain cannot be built: this will allow applications
1092 to test if a chain is correctly configured.
1094 Note: if the CERT based stores are not set then the parent SSL_CTX
1095 store is used to retain compatibility with existing behaviour.
1099 *) New function ssl_set_client_disabled to set a ciphersuite disabled
1100 mask based on the current session, check mask when sending client
1101 hello and checking the requested ciphersuite.
1104 *) New ctrls to retrieve and set certificate types in a certificate
1105 request message. Print out received values in s_client. If certificate
1106 types is not set with custom values set sensible values based on
1107 supported signature algorithms.
1110 *) Support for distinct client and server supported signature algorithms.
1113 *) Add certificate callback. If set this is called whenever a certificate
1114 is required by client or server. An application can decide which
1115 certificate chain to present based on arbitrary criteria: for example
1116 supported signature algorithms. Add very simple example to s_server.
1117 This fixes many of the problems and restrictions of the existing client
1118 certificate callback: for example you can now clear an existing
1119 certificate and specify the whole chain.
1122 *) Add new "valid_flags" field to CERT_PKEY structure which determines what
1123 the certificate can be used for (if anything). Set valid_flags field
1124 in new tls1_check_chain function. Simplify ssl_set_cert_masks which used
1125 to have similar checks in it.
1127 Add new "cert_flags" field to CERT structure and include a "strict mode".
1128 This enforces some TLS certificate requirements (such as only permitting
1129 certificate signature algorithms contained in the supported algorithms
1130 extension) which some implementations ignore: this option should be used
1131 with caution as it could cause interoperability issues.
1134 *) Update and tidy signature algorithm extension processing. Work out
1135 shared signature algorithms based on preferences and peer algorithms
1136 and print them out in s_client and s_server. Abort handshake if no
1137 shared signature algorithms.
1140 *) Add new functions to allow customised supported signature algorithms
1141 for SSL and SSL_CTX structures. Add options to s_client and s_server
1145 *) New function SSL_certs_clear() to delete all references to certificates
1146 from an SSL structure. Before this once a certificate had been added
1147 it couldn't be removed.
1150 *) Integrate hostname, email address and IP address checking with certificate
1151 verification. New verify options supporting checking in opensl utility.
1154 *) Fixes and wildcard matching support to hostname and email checking
1155 functions. Add manual page.
1156 [Florian Weimer (Red Hat Product Security Team)]
1158 *) New functions to check a hostname email or IP address against a
1159 certificate. Add options x509 utility to print results of checks against
1163 *) Fix OCSP checking.
1164 [Rob Stradling <rob.stradling@comodo.com> and Ben Laurie]
1166 *) Initial experimental support for explicitly trusted non-root CAs.
1167 OpenSSL still tries to build a complete chain to a root but if an
1168 intermediate CA has a trust setting included that is used. The first
1169 setting is used: whether to trust (e.g., -addtrust option to the x509
1173 *) Add -trusted_first option which attempts to find certificates in the
1174 trusted store even if an untrusted chain is also supplied.
1177 *) MIPS assembly pack updates: support for MIPS32r2 and SmartMIPS ASE,
1178 platform support for Linux and Android.
1181 *) Support for linux-x32, ILP32 environment in x86_64 framework.
1184 *) Experimental multi-implementation support for FIPS capable OpenSSL.
1185 When in FIPS mode the approved implementations are used as normal,
1186 when not in FIPS mode the internal unapproved versions are used instead.
1187 This means that the FIPS capable OpenSSL isn't forced to use the
1188 (often lower performance) FIPS implementations outside FIPS mode.
1191 *) Transparently support X9.42 DH parameters when calling
1192 PEM_read_bio_DHparameters. This means existing applications can handle
1193 the new parameter format automatically.
1196 *) Initial experimental support for X9.42 DH parameter format: mainly
1197 to support use of 'q' parameter for RFC5114 parameters.
1200 *) Add DH parameters from RFC5114 including test data to dhtest.
1203 *) Support for automatic EC temporary key parameter selection. If enabled
1204 the most preferred EC parameters are automatically used instead of
1205 hardcoded fixed parameters. Now a server just has to call:
1206 SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically
1207 support ECDH and use the most appropriate parameters.
1210 *) Enhance and tidy EC curve and point format TLS extension code. Use
1211 static structures instead of allocation if default values are used.
1212 New ctrls to set curves we wish to support and to retrieve shared curves.
1213 Print out shared curves in s_server. New options to s_server and s_client
1214 to set list of supported curves.
1217 *) New ctrls to retrieve supported signature algorithms and
1218 supported curve values as an array of NIDs. Extend openssl utility
1219 to print out received values.
1222 *) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert
1223 between NIDs and the more common NIST names such as "P-256". Enhance
1224 ecparam utility and ECC method to recognise the NIST names for curves.
1227 *) Enhance SSL/TLS certificate chain handling to support different
1228 chains for each certificate instead of one chain in the parent SSL_CTX.
1231 *) Support for fixed DH ciphersuite client authentication: where both
1232 server and client use DH certificates with common parameters.
1235 *) Support for fixed DH ciphersuites: those requiring DH server
1239 *) New function i2d_re_X509_tbs for re-encoding the TBS portion of
1241 Note: Related 1.0.2-beta specific macros X509_get_cert_info,
1242 X509_CINF_set_modified, X509_CINF_get_issuer, X509_CINF_get_extensions and
1243 X509_CINF_get_signature were reverted post internal team review.
1245 Changes between 1.0.1k and 1.0.1l [15 Jan 2015]
1247 *) Build fixes for the Windows and OpenVMS platforms
1248 [Matt Caswell and Richard Levitte]
1250 Changes between 1.0.1j and 1.0.1k [8 Jan 2015]
1252 *) Fix DTLS segmentation fault in dtls1_get_record. A carefully crafted DTLS
1253 message can cause a segmentation fault in OpenSSL due to a NULL pointer
1254 dereference. This could lead to a Denial Of Service attack. Thanks to
1255 Markus Stenberg of Cisco Systems, Inc. for reporting this issue.
1259 *) Fix DTLS memory leak in dtls1_buffer_record. A memory leak can occur in the
1260 dtls1_buffer_record function under certain conditions. In particular this
1261 could occur if an attacker sent repeated DTLS records with the same
1262 sequence number but for the next epoch. The memory leak could be exploited
1263 by an attacker in a Denial of Service attack through memory exhaustion.
1264 Thanks to Chris Mueller for reporting this issue.
1268 *) Fix issue where no-ssl3 configuration sets method to NULL. When openssl is
1269 built with the no-ssl3 option and a SSL v3 ClientHello is received the ssl
1270 method would be set to NULL which could later result in a NULL pointer
1271 dereference. Thanks to Frank Schmirler for reporting this issue.
1275 *) Abort handshake if server key exchange message is omitted for ephemeral
1278 Thanks to Karthikeyan Bhargavan of the PROSECCO team at INRIA for
1279 reporting this issue.
1283 *) Remove non-export ephemeral RSA code on client and server. This code
1284 violated the TLS standard by allowing the use of temporary RSA keys in
1285 non-export ciphersuites and could be used by a server to effectively
1286 downgrade the RSA key length used to a value smaller than the server
1287 certificate. Thanks for Karthikeyan Bhargavan of the PROSECCO team at
1288 INRIA or reporting this issue.
1292 *) Fixed issue where DH client certificates are accepted without verification.
1293 An OpenSSL server will accept a DH certificate for client authentication
1294 without the certificate verify message. This effectively allows a client to
1295 authenticate without the use of a private key. This only affects servers
1296 which trust a client certificate authority which issues certificates
1297 containing DH keys: these are extremely rare and hardly ever encountered.
1298 Thanks for Karthikeyan Bhargavan of the PROSECCO team at INRIA or reporting
1303 *) Ensure that the session ID context of an SSL is updated when its
1304 SSL_CTX is updated via SSL_set_SSL_CTX.
1306 The session ID context is typically set from the parent SSL_CTX,
1307 and can vary with the CTX.
1310 *) Fix various certificate fingerprint issues.
1312 By using non-DER or invalid encodings outside the signed portion of a
1313 certificate the fingerprint can be changed without breaking the signature.
1314 Although no details of the signed portion of the certificate can be changed
1315 this can cause problems with some applications: e.g. those using the
1316 certificate fingerprint for blacklists.
1318 1. Reject signatures with non zero unused bits.
1320 If the BIT STRING containing the signature has non zero unused bits reject
1321 the signature. All current signature algorithms require zero unused bits.
1323 2. Check certificate algorithm consistency.
1325 Check the AlgorithmIdentifier inside TBS matches the one in the
1326 certificate signature. NB: this will result in signature failure
1327 errors for some broken certificates.
1329 Thanks to Konrad Kraszewski from Google for reporting this issue.
1331 3. Check DSA/ECDSA signatures use DER.
1333 Reencode DSA/ECDSA signatures and compare with the original received
1334 signature. Return an error if there is a mismatch.
1336 This will reject various cases including garbage after signature
1337 (thanks to Antti Karjalainen and Tuomo Untinen from the Codenomicon CROSS
1338 program for discovering this case) and use of BER or invalid ASN.1 INTEGERs
1339 (negative or with leading zeroes).
1341 Further analysis was conducted and fixes were developed by Stephen Henson
1342 of the OpenSSL core team.
1347 *) Correct Bignum squaring. Bignum squaring (BN_sqr) may produce incorrect
1348 results on some platforms, including x86_64. This bug occurs at random
1349 with a very low probability, and is not known to be exploitable in any
1350 way, though its exact impact is difficult to determine. Thanks to Pieter
1351 Wuille (Blockstream) who reported this issue and also suggested an initial
1352 fix. Further analysis was conducted by the OpenSSL development team and
1353 Adam Langley of Google. The final fix was developed by Andy Polyakov of
1354 the OpenSSL core team.
1358 *) Do not resume sessions on the server if the negotiated protocol
1359 version does not match the session's version. Resuming with a different
1360 version, while not strictly forbidden by the RFC, is of questionable
1361 sanity and breaks all known clients.
1362 [David Benjamin, Emilia Käsper]
1364 *) Tighten handling of the ChangeCipherSpec (CCS) message: reject
1365 early CCS messages during renegotiation. (Note that because
1366 renegotiation is encrypted, this early CCS was not exploitable.)
1369 *) Tighten client-side session ticket handling during renegotiation:
1370 ensure that the client only accepts a session ticket if the server sends
1371 the extension anew in the ServerHello. Previously, a TLS client would
1372 reuse the old extension state and thus accept a session ticket if one was
1373 announced in the initial ServerHello.
1375 Similarly, ensure that the client requires a session ticket if one
1376 was advertised in the ServerHello. Previously, a TLS client would
1377 ignore a missing NewSessionTicket message.
1380 Changes between 1.0.1i and 1.0.1j [15 Oct 2014]
1382 *) SRTP Memory Leak.
1384 A flaw in the DTLS SRTP extension parsing code allows an attacker, who
1385 sends a carefully crafted handshake message, to cause OpenSSL to fail
1386 to free up to 64k of memory causing a memory leak. This could be
1387 exploited in a Denial Of Service attack. This issue affects OpenSSL
1388 1.0.1 server implementations for both SSL/TLS and DTLS regardless of
1389 whether SRTP is used or configured. Implementations of OpenSSL that
1390 have been compiled with OPENSSL_NO_SRTP defined are not affected.
1392 The fix was developed by the OpenSSL team.
1396 *) Session Ticket Memory Leak.
1398 When an OpenSSL SSL/TLS/DTLS server receives a session ticket the
1399 integrity of that ticket is first verified. In the event of a session
1400 ticket integrity check failing, OpenSSL will fail to free memory
1401 causing a memory leak. By sending a large number of invalid session
1402 tickets an attacker could exploit this issue in a Denial Of Service
1407 *) Build option no-ssl3 is incomplete.
1409 When OpenSSL is configured with "no-ssl3" as a build option, servers
1410 could accept and complete a SSL 3.0 handshake, and clients could be
1411 configured to send them.
1413 [Akamai and the OpenSSL team]
1415 *) Add support for TLS_FALLBACK_SCSV.
1416 Client applications doing fallback retries should call
1417 SSL_set_mode(s, SSL_MODE_SEND_FALLBACK_SCSV).
1419 [Adam Langley, Bodo Moeller]
1421 *) Add additional DigestInfo checks.
1423 Reencode DigestInto in DER and check against the original when
1424 verifying RSA signature: this will reject any improperly encoded
1425 DigestInfo structures.
1427 Note: this is a precautionary measure and no attacks are currently known.
1431 Changes between 1.0.1h and 1.0.1i [6 Aug 2014]
1433 *) Fix SRP buffer overrun vulnerability. Invalid parameters passed to the
1434 SRP code can be overrun an internal buffer. Add sanity check that
1435 g, A, B < N to SRP code.
1437 Thanks to Sean Devlin and Watson Ladd of Cryptography Services, NCC
1438 Group for discovering this issue.
1442 *) A flaw in the OpenSSL SSL/TLS server code causes the server to negotiate
1443 TLS 1.0 instead of higher protocol versions when the ClientHello message
1444 is badly fragmented. This allows a man-in-the-middle attacker to force a
1445 downgrade to TLS 1.0 even if both the server and the client support a
1446 higher protocol version, by modifying the client's TLS records.
1448 Thanks to David Benjamin and Adam Langley (Google) for discovering and
1449 researching this issue.
1453 *) OpenSSL DTLS clients enabling anonymous (EC)DH ciphersuites are subject
1454 to a denial of service attack. A malicious server can crash the client
1455 with a null pointer dereference (read) by specifying an anonymous (EC)DH
1456 ciphersuite and sending carefully crafted handshake messages.
1458 Thanks to Felix Gröbert (Google) for discovering and researching this
1463 *) By sending carefully crafted DTLS packets an attacker could cause openssl
1464 to leak memory. This can be exploited through a Denial of Service attack.
1465 Thanks to Adam Langley for discovering and researching this issue.
1469 *) An attacker can force openssl to consume large amounts of memory whilst
1470 processing DTLS handshake messages. This can be exploited through a
1471 Denial of Service attack.
1472 Thanks to Adam Langley for discovering and researching this issue.
1476 *) An attacker can force an error condition which causes openssl to crash
1477 whilst processing DTLS packets due to memory being freed twice. This
1478 can be exploited through a Denial of Service attack.
1479 Thanks to Adam Langley and Wan-Teh Chang for discovering and researching
1484 *) If a multithreaded client connects to a malicious server using a resumed
1485 session and the server sends an ec point format extension it could write
1486 up to 255 bytes to freed memory.
1488 Thanks to Gabor Tyukasz (LogMeIn Inc) for discovering and researching this
1493 *) A malicious server can crash an OpenSSL client with a null pointer
1494 dereference (read) by specifying an SRP ciphersuite even though it was not
1495 properly negotiated with the client. This can be exploited through a
1496 Denial of Service attack.
1498 Thanks to Joonas Kuorilehto and Riku Hietamäki (Codenomicon) for
1499 discovering and researching this issue.
1503 *) A flaw in OBJ_obj2txt may cause pretty printing functions such as
1504 X509_name_oneline, X509_name_print_ex et al. to leak some information
1505 from the stack. Applications may be affected if they echo pretty printing
1506 output to the attacker.
1508 Thanks to Ivan Fratric (Google) for discovering this issue.
1510 [Emilia Käsper, and Steve Henson]
1512 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
1513 for corner cases. (Certain input points at infinity could lead to
1514 bogus results, with non-infinity inputs mapped to infinity too.)
1517 Changes between 1.0.1g and 1.0.1h [5 Jun 2014]
1519 *) Fix for SSL/TLS MITM flaw. An attacker using a carefully crafted
1520 handshake can force the use of weak keying material in OpenSSL
1521 SSL/TLS clients and servers.
1523 Thanks to KIKUCHI Masashi (Lepidum Co. Ltd.) for discovering and
1524 researching this issue. (CVE-2014-0224)
1525 [KIKUCHI Masashi, Steve Henson]
1527 *) Fix DTLS recursion flaw. By sending an invalid DTLS handshake to an
1528 OpenSSL DTLS client the code can be made to recurse eventually crashing
1531 Thanks to Imre Rad (Search-Lab Ltd.) for discovering this issue.
1533 [Imre Rad, Steve Henson]
1535 *) Fix DTLS invalid fragment vulnerability. A buffer overrun attack can
1536 be triggered by sending invalid DTLS fragments to an OpenSSL DTLS
1537 client or server. This is potentially exploitable to run arbitrary
1538 code on a vulnerable client or server.
1540 Thanks to Jüri Aedla for reporting this issue. (CVE-2014-0195)
1541 [Jüri Aedla, Steve Henson]
1543 *) Fix bug in TLS code where clients enable anonymous ECDH ciphersuites
1544 are subject to a denial of service attack.
1546 Thanks to Felix Gröbert and Ivan Fratric at Google for discovering
1547 this issue. (CVE-2014-3470)
1548 [Felix Gröbert, Ivan Fratric, Steve Henson]
1550 *) Harmonize version and its documentation. -f flag is used to display
1552 [mancha <mancha1@zoho.com>]
1554 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
1555 in i2d_ECPrivateKey.
1556 [mancha <mancha1@zoho.com>]
1558 *) Fix some double frees. These are not thought to be exploitable.
1559 [mancha <mancha1@zoho.com>]
1561 Changes between 1.0.1f and 1.0.1g [7 Apr 2014]
1563 *) A missing bounds check in the handling of the TLS heartbeat extension
1564 can be used to reveal up to 64k of memory to a connected client or
1567 Thanks for Neel Mehta of Google Security for discovering this bug and to
1568 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
1569 preparing the fix (CVE-2014-0160)
1570 [Adam Langley, Bodo Moeller]
1572 *) Fix for the attack described in the paper "Recovering OpenSSL
1573 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
1574 by Yuval Yarom and Naomi Benger. Details can be obtained from:
1575 http://eprint.iacr.org/2014/140
1577 Thanks to Yuval Yarom and Naomi Benger for discovering this
1578 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
1579 [Yuval Yarom and Naomi Benger]
1581 *) TLS pad extension: draft-agl-tls-padding-03
1583 Workaround for the "TLS hang bug" (see FAQ and PR#2771): if the
1584 TLS client Hello record length value would otherwise be > 255 and
1585 less that 512 pad with a dummy extension containing zeroes so it
1586 is at least 512 bytes long.
1588 [Adam Langley, Steve Henson]
1590 Changes between 1.0.1e and 1.0.1f [6 Jan 2014]
1592 *) Fix for TLS record tampering bug. A carefully crafted invalid
1593 handshake could crash OpenSSL with a NULL pointer exception.
1594 Thanks to Anton Johansson for reporting this issues.
1597 *) Keep original DTLS digest and encryption contexts in retransmission
1598 structures so we can use the previous session parameters if they need
1599 to be resent. (CVE-2013-6450)
1602 *) Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which
1603 avoids preferring ECDHE-ECDSA ciphers when the client appears to be
1604 Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for
1605 several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug
1606 is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing
1607 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer.
1608 [Rob Stradling, Adam Langley]
1610 Changes between 1.0.1d and 1.0.1e [11 Feb 2013]
1612 *) Correct fix for CVE-2013-0169. The original didn't work on AES-NI
1613 supporting platforms or when small records were transferred.
1614 [Andy Polyakov, Steve Henson]
1616 Changes between 1.0.1c and 1.0.1d [5 Feb 2013]
1618 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
1620 This addresses the flaw in CBC record processing discovered by
1621 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
1622 at: http://www.isg.rhul.ac.uk/tls/
1624 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
1625 Security Group at Royal Holloway, University of London
1626 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
1627 Emilia Käsper for the initial patch.
1629 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
1631 *) Fix flaw in AESNI handling of TLS 1.2 and 1.1 records for CBC mode
1632 ciphersuites which can be exploited in a denial of service attack.
1633 Thanks go to and to Adam Langley <agl@chromium.org> for discovering
1634 and detecting this bug and to Wolfgang Ettlinger
1635 <wolfgang.ettlinger@gmail.com> for independently discovering this issue.
1639 *) Return an error when checking OCSP signatures when key is NULL.
1640 This fixes a DoS attack. (CVE-2013-0166)
1643 *) Make openssl verify return errors.
1644 [Chris Palmer <palmer@google.com> and Ben Laurie]
1646 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
1647 the right response is stapled. Also change SSL_get_certificate()
1648 so it returns the certificate actually sent.
1649 See http://rt.openssl.org/Ticket/Display.html?id=2836.
1650 [Rob Stradling <rob.stradling@comodo.com>]
1652 *) Fix possible deadlock when decoding public keys.
1655 *) Don't use TLS 1.0 record version number in initial client hello
1659 Changes between 1.0.1b and 1.0.1c [10 May 2012]
1661 *) Sanity check record length before skipping explicit IV in TLS
1662 1.2, 1.1 and DTLS to fix DoS attack.
1664 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
1665 fuzzing as a service testing platform.
1669 *) Initialise tkeylen properly when encrypting CMS messages.
1670 Thanks to Solar Designer of Openwall for reporting this issue.
1673 *) In FIPS mode don't try to use composite ciphers as they are not
1677 Changes between 1.0.1a and 1.0.1b [26 Apr 2012]
1679 *) OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and
1680 1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately
1681 mean any application compiled against OpenSSL 1.0.0 headers setting
1682 SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disablng
1683 TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to
1684 0x10000000L Any application which was previously compiled against
1685 OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1
1686 will need to be recompiled as a result. Letting be results in
1687 inability to disable specifically TLS 1.1 and in client context,
1688 in unlike event, limit maximum offered version to TLS 1.0 [see below].
1691 *) In order to ensure interoperabilty SSL_OP_NO_protocolX does not
1692 disable just protocol X, but all protocols above X *if* there are
1693 protocols *below* X still enabled. In more practical terms it means
1694 that if application wants to disable TLS1.0 in favor of TLS1.1 and
1695 above, it's not sufficient to pass SSL_OP_NO_TLSv1, one has to pass
1696 SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2. This applies to
1700 Changes between 1.0.1 and 1.0.1a [19 Apr 2012]
1702 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
1703 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
1704 in CRYPTO_realloc_clean.
1706 Thanks to Tavis Ormandy, Google Security Team, for discovering this
1707 issue and to Adam Langley <agl@chromium.org> for fixing it.
1709 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
1711 *) Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections.
1714 *) Workarounds for some broken servers that "hang" if a client hello
1715 record length exceeds 255 bytes.
1717 1. Do not use record version number > TLS 1.0 in initial client
1718 hello: some (but not all) hanging servers will now work.
1719 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate
1720 the number of ciphers sent in the client hello. This should be
1721 set to an even number, such as 50, for example by passing:
1722 -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure.
1723 Most broken servers should now work.
1724 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable
1725 TLS 1.2 client support entirely.
1728 *) Fix SEGV in Vector Permutation AES module observed in OpenSSH.
1731 Changes between 1.0.0h and 1.0.1 [14 Mar 2012]
1733 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET
1734 STRING form instead of a DigestInfo.
1737 *) The format used for MDC2 RSA signatures is inconsistent between EVP
1738 and the RSA_sign/RSA_verify functions. This was made more apparent when
1739 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
1740 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
1741 the correct format in RSA_verify so both forms transparently work.
1744 *) Some servers which support TLS 1.0 can choke if we initially indicate
1745 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
1746 encrypted premaster secret. As a workaround use the maximum permitted
1747 client version in client hello, this should keep such servers happy
1748 and still work with previous versions of OpenSSL.
1751 *) Add support for TLS/DTLS heartbeats.
1752 [Robin Seggelmann <seggelmann@fh-muenster.de>]
1754 *) Add support for SCTP.
1755 [Robin Seggelmann <seggelmann@fh-muenster.de>]
1757 *) Improved PRNG seeding for VOS.
1758 [Paul Green <Paul.Green@stratus.com>]
1760 *) Extensive assembler packs updates, most notably:
1762 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
1763 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
1764 - x86_64: bit-sliced AES implementation;
1765 - ARM: NEON support, contemporary platforms optimizations;
1766 - s390x: z196 support;
1767 - *: GHASH and GF(2^m) multiplication implementations;
1771 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
1772 (removal of unnecessary code)
1773 [Peter Sylvester <peter.sylvester@edelweb.fr>]
1775 *) Add TLS key material exporter from RFC 5705.
1778 *) Add DTLS-SRTP negotiation from RFC 5764.
1781 *) Add Next Protocol Negotiation,
1782 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
1783 disabled with a no-npn flag to config or Configure. Code donated
1785 [Adam Langley <agl@google.com> and Ben Laurie]
1787 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
1788 NIST-P256, NIST-P521, with constant-time single point multiplication on
1789 typical inputs. Compiler support for the nonstandard type __uint128_t is
1790 required to use this (present in gcc 4.4 and later, for 64-bit builds).
1791 Code made available under Apache License version 2.0.
1793 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
1794 line to include this in your build of OpenSSL, and run "make depend" (or
1795 "make update"). This enables the following EC_METHODs:
1797 EC_GFp_nistp224_method()
1798 EC_GFp_nistp256_method()
1799 EC_GFp_nistp521_method()
1801 EC_GROUP_new_by_curve_name() will automatically use these (while
1802 EC_GROUP_new_curve_GFp() currently prefers the more flexible
1804 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
1806 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
1807 all platforms. Move ssize_t definition from e_os.h to the public
1808 header file e_os2.h as it now appears in public header file cms.h
1811 *) New -sigopt option to the ca, req and x509 utilities. Additional
1812 signature parameters can be passed using this option and in
1816 *) Add RSA PSS signing function. This will generate and set the
1817 appropriate AlgorithmIdentifiers for PSS based on those in the
1818 corresponding EVP_MD_CTX structure. No application support yet.
1821 *) Support for companion algorithm specific ASN1 signing routines.
1822 New function ASN1_item_sign_ctx() signs a pre-initialised
1823 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
1824 the appropriate parameters.
1827 *) Add new algorithm specific ASN1 verification initialisation function
1828 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
1829 handling will be the same no matter what EVP_PKEY_METHOD is used.
1830 Add a PSS handler to support verification of PSS signatures: checked
1831 against a number of sample certificates.
1834 *) Add signature printing for PSS. Add PSS OIDs.
1835 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
1837 *) Add algorithm specific signature printing. An individual ASN1 method
1838 can now print out signatures instead of the standard hex dump.
1840 More complex signatures (e.g. PSS) can print out more meaningful
1841 information. Include DSA version that prints out the signature
1845 *) Password based recipient info support for CMS library: implementing
1849 *) Split password based encryption into PBES2 and PBKDF2 functions. This
1850 neatly separates the code into cipher and PBE sections and is required
1851 for some algorithms that split PBES2 into separate pieces (such as
1852 password based CMS).
1855 *) Session-handling fixes:
1856 - Fix handling of connections that are resuming with a session ID,
1857 but also support Session Tickets.
1858 - Fix a bug that suppressed issuing of a new ticket if the client
1859 presented a ticket with an expired session.
1860 - Try to set the ticket lifetime hint to something reasonable.
1861 - Make tickets shorter by excluding irrelevant information.
1862 - On the client side, don't ignore renewed tickets.
1863 [Adam Langley, Bodo Moeller (Google)]
1865 *) Fix PSK session representation.
1868 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
1870 This work was sponsored by Intel.
1873 *) Add GCM support to TLS library. Some custom code is needed to split
1874 the IV between the fixed (from PRF) and explicit (from TLS record)
1875 portions. This adds all GCM ciphersuites supported by RFC5288 and
1876 RFC5289. Generalise some AES* cipherstrings to include GCM and
1877 add a special AESGCM string for GCM only.
1880 *) Expand range of ctrls for AES GCM. Permit setting invocation
1881 field on decrypt and retrieval of invocation field only on encrypt.
1884 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
1885 As required by RFC5289 these ciphersuites cannot be used if for
1886 versions of TLS earlier than 1.2.
1889 *) For FIPS capable OpenSSL interpret a NULL default public key method
1890 as unset and return the appropriate default but do *not* set the default.
1891 This means we can return the appropriate method in applications that
1892 switch between FIPS and non-FIPS modes.
1895 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
1896 ENGINE is used then we cannot handle that in the FIPS module so we
1897 keep original code iff non-FIPS operations are allowed.
1900 *) Add -attime option to openssl utilities.
1901 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
1903 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
1906 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
1907 FIPS EC methods unconditionally for now.
1910 *) New build option no-ec2m to disable characteristic 2 code.
1913 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
1914 all cases can be covered as some introduce binary incompatibilities.
1917 *) Redirect RSA operations to FIPS module including keygen,
1918 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
1921 *) Add similar low level API blocking to ciphers.
1924 *) Low level digest APIs are not approved in FIPS mode: any attempt
1925 to use these will cause a fatal error. Applications that *really* want
1926 to use them can use the private_* version instead.
1929 *) Redirect cipher operations to FIPS module for FIPS builds.
1932 *) Redirect digest operations to FIPS module for FIPS builds.
1935 *) Update build system to add "fips" flag which will link in fipscanister.o
1936 for static and shared library builds embedding a signature if needed.
1939 *) Output TLS supported curves in preference order instead of numerical
1940 order. This is currently hardcoded for the highest order curves first.
1941 This should be configurable so applications can judge speed vs strength.
1944 *) Add TLS v1.2 server support for client authentication.
1947 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
1951 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
1952 FIPS modules versions.
1955 *) Add TLS v1.2 client side support for client authentication. Keep cache
1956 of handshake records longer as we don't know the hash algorithm to use
1957 until after the certificate request message is received.
1960 *) Initial TLS v1.2 client support. Add a default signature algorithms
1961 extension including all the algorithms we support. Parse new signature
1962 format in client key exchange. Relax some ECC signing restrictions for
1963 TLS v1.2 as indicated in RFC5246.
1966 *) Add server support for TLS v1.2 signature algorithms extension. Switch
1967 to new signature format when needed using client digest preference.
1968 All server ciphersuites should now work correctly in TLS v1.2. No client
1969 support yet and no support for client certificates.
1972 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
1973 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
1974 ciphersuites. At present only RSA key exchange ciphersuites work with
1975 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
1976 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
1977 and version checking.
1980 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
1981 with this defined it will not be affected by any changes to ssl internal
1982 structures. Add several utility functions to allow openssl application
1983 to work with OPENSSL_NO_SSL_INTERN defined.
1987 [Tom Wu <tjw@cs.stanford.edu> and Ben Laurie]
1989 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
1992 *) Permit abbreviated handshakes when renegotiating using the function
1993 SSL_renegotiate_abbreviated().
1994 [Robin Seggelmann <seggelmann@fh-muenster.de>]
1996 *) Add call to ENGINE_register_all_complete() to
1997 ENGINE_load_builtin_engines(), so some implementations get used
1998 automatically instead of needing explicit application support.
2001 *) Add support for TLS key exporter as described in RFC5705.
2002 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
2004 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
2005 a few changes are required:
2007 Add SSL_OP_NO_TLSv1_1 flag.
2008 Add TLSv1_1 methods.
2009 Update version checking logic to handle version 1.1.
2010 Add explicit IV handling (ported from DTLS code).
2011 Add command line options to s_client/s_server.
2014 Changes between 1.0.0g and 1.0.0h [12 Mar 2012]
2016 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
2017 in CMS and PKCS7 code. When RSA decryption fails use a random key for
2018 content decryption and always return the same error. Note: this attack
2019 needs on average 2^20 messages so it only affects automated senders. The
2020 old behaviour can be reenabled in the CMS code by setting the
2021 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
2022 an MMA defence is not necessary.
2023 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
2024 this issue. (CVE-2012-0884)
2027 *) Fix CVE-2011-4619: make sure we really are receiving a
2028 client hello before rejecting multiple SGC restarts. Thanks to
2029 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
2032 Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
2034 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
2035 Thanks to Antonio Martin, Enterprise Secure Access Research and
2036 Development, Cisco Systems, Inc. for discovering this bug and
2037 preparing a fix. (CVE-2012-0050)
2040 Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
2042 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
2043 of the Vaudenay padding oracle attack on CBC mode encryption
2044 which enables an efficient plaintext recovery attack against
2045 the OpenSSL implementation of DTLS. Their attack exploits timing
2046 differences arising during decryption processing. A research
2047 paper describing this attack can be found at:
2048 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
2049 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
2050 Security Group at Royal Holloway, University of London
2051 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
2052 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
2053 for preparing the fix. (CVE-2011-4108)
2054 [Robin Seggelmann, Michael Tuexen]
2056 *) Clear bytes used for block padding of SSL 3.0 records.
2058 [Adam Langley (Google)]
2060 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
2061 Kadianakis <desnacked@gmail.com> for discovering this issue and
2062 Adam Langley for preparing the fix. (CVE-2011-4619)
2063 [Adam Langley (Google)]
2065 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
2066 [Andrey Kulikov <amdeich@gmail.com>]
2068 *) Prevent malformed RFC3779 data triggering an assertion failure.
2069 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
2070 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
2071 [Rob Austein <sra@hactrn.net>]
2073 *) Improved PRNG seeding for VOS.
2074 [Paul Green <Paul.Green@stratus.com>]
2076 *) Fix ssl_ciph.c set-up race.
2077 [Adam Langley (Google)]
2079 *) Fix spurious failures in ecdsatest.c.
2080 [Emilia Käsper (Google)]
2082 *) Fix the BIO_f_buffer() implementation (which was mixing different
2083 interpretations of the '..._len' fields).
2084 [Adam Langley (Google)]
2086 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
2087 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
2088 threads won't reuse the same blinding coefficients.
2090 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
2091 lock to call BN_BLINDING_invert_ex, and avoids one use of
2092 BN_BLINDING_update for each BN_BLINDING structure (previously,
2093 the last update always remained unused).
2094 [Emilia Käsper (Google)]
2096 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
2097 [Bob Buckholz (Google)]
2099 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
2101 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
2102 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
2103 [Kaspar Brand <ossl@velox.ch>]
2105 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
2106 for multi-threaded use of ECDH. (CVE-2011-3210)
2107 [Adam Langley (Google)]
2109 *) Fix x509_name_ex_d2i memory leak on bad inputs.
2112 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
2113 signature public key algorithm by using OID xref utilities instead.
2114 Before this you could only use some ECC ciphersuites with SHA1 only.
2117 *) Add protection against ECDSA timing attacks as mentioned in the paper
2118 by Billy Bob Brumley and Nicola Tuveri, see:
2120 http://eprint.iacr.org/2011/232.pdf
2122 [Billy Bob Brumley and Nicola Tuveri]
2124 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
2126 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
2127 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
2129 *) Fix bug in string printing code: if *any* escaping is enabled we must
2130 escape the escape character (backslash) or the resulting string is
2134 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
2136 *) Disable code workaround for ancient and obsolete Netscape browsers
2137 and servers: an attacker can use it in a ciphersuite downgrade attack.
2138 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
2141 *) Fixed J-PAKE implementation error, originally discovered by
2142 Sebastien Martini, further info and confirmation from Stefan
2143 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
2146 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
2148 *) Fix extension code to avoid race conditions which can result in a buffer
2149 overrun vulnerability: resumed sessions must not be modified as they can
2150 be shared by multiple threads. CVE-2010-3864
2153 *) Fix WIN32 build system to correctly link an ENGINE directory into
2157 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
2159 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
2161 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
2163 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
2165 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
2166 context. The operation can be customised via the ctrl mechanism in
2167 case ENGINEs want to include additional functionality.
2170 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
2173 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
2174 output hashes compatible with older versions of OpenSSL.
2175 [Willy Weisz <weisz@vcpc.univie.ac.at>]
2177 *) Fix compression algorithm handling: if resuming a session use the
2178 compression algorithm of the resumed session instead of determining
2179 it from client hello again. Don't allow server to change algorithm.
2182 *) Add load_crls() function to apps tidying load_certs() too. Add option
2183 to verify utility to allow additional CRLs to be included.
2186 *) Update OCSP request code to permit adding custom headers to the request:
2187 some responders need this.
2190 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
2192 [Julia Lawall <julia@diku.dk>]
2194 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
2195 needlessly dereferenced structures, used obsolete functions and
2196 didn't handle all updated verify codes correctly.
2199 *) Disable MD2 in the default configuration.
2202 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
2203 indicate the initial BIO being pushed or popped. This makes it possible
2204 to determine whether the BIO is the one explicitly called or as a result
2205 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
2206 it handles reference counts correctly and doesn't zero out the I/O bio
2207 when it is not being explicitly popped. WARNING: applications which
2208 included workarounds for the old buggy behaviour will need to be modified
2209 or they could free up already freed BIOs.
2212 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
2213 renaming to all platforms (within the 0.9.8 branch, this was
2214 done conditionally on Netware platforms to avoid a name clash).
2215 [Guenter <lists@gknw.net>]
2217 *) Add ECDHE and PSK support to DTLS.
2218 [Michael Tuexen <tuexen@fh-muenster.de>]
2220 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
2224 *) Add "missing" function EVP_MD_flags() (without this the only way to
2225 retrieve a digest flags is by accessing the structure directly. Update
2226 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
2227 or cipher is registered as in the "from" argument. Print out all
2228 registered digests in the dgst usage message instead of manually
2229 attempting to work them out.
2232 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
2233 this allows the use of compression and extensions. Change default cipher
2234 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
2235 by default unless an application cipher string requests it.
2238 *) Alter match criteria in PKCS12_parse(). It used to try to use local
2239 key ids to find matching certificates and keys but some PKCS#12 files
2240 don't follow the (somewhat unwritten) rules and this strategy fails.
2241 Now just gather all certificates together and the first private key
2242 then look for the first certificate that matches the key.
2245 *) Support use of registered digest and cipher names for dgst and cipher
2246 commands instead of having to add each one as a special case. So now
2253 openssl dgst -sha256 foo
2255 and this works for ENGINE based algorithms too.
2259 *) Update Gost ENGINE to support parameter files.
2260 [Victor B. Wagner <vitus@cryptocom.ru>]
2262 *) Support GeneralizedTime in ca utility.
2263 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
2265 *) Enhance the hash format used for certificate directory links. The new
2266 form uses the canonical encoding (meaning equivalent names will work
2267 even if they aren't identical) and uses SHA1 instead of MD5. This form
2268 is incompatible with the older format and as a result c_rehash should
2269 be used to rebuild symbolic links.
2272 *) Make PKCS#8 the default write format for private keys, replacing the
2273 traditional format. This form is standardised, more secure and doesn't
2274 include an implicit MD5 dependency.
2277 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
2278 committed to OpenSSL should pass this lot as a minimum.
2281 *) Add session ticket override functionality for use by EAP-FAST.
2282 [Jouni Malinen <j@w1.fi>]
2284 *) Modify HMAC functions to return a value. Since these can be implemented
2285 in an ENGINE errors can occur.
2288 *) Type-checked OBJ_bsearch_ex.
2291 *) Type-checked OBJ_bsearch. Also some constification necessitated
2292 by type-checking. Still to come: TXT_DB, bsearch(?),
2293 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
2297 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
2298 seconds to a tm structure directly, instead of going through OS
2299 specific date routines. This avoids any issues with OS routines such
2300 as the year 2038 bug. New *_adj() functions for ASN1 time structures
2301 and X509_time_adj_ex() to cover the extended range. The existing
2302 X509_time_adj() is still usable and will no longer have any date issues.
2305 *) Delta CRL support. New use deltas option which will attempt to locate
2306 and search any appropriate delta CRLs available.
2308 This work was sponsored by Google.
2311 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
2312 code and add additional score elements. Validate alternate CRL paths
2313 as part of the CRL checking and indicate a new error "CRL path validation
2314 error" in this case. Applications wanting additional details can use
2315 the verify callback and check the new "parent" field. If this is not
2316 NULL CRL path validation is taking place. Existing applications wont
2317 see this because it requires extended CRL support which is off by
2320 This work was sponsored by Google.
2323 *) Support for freshest CRL extension.
2325 This work was sponsored by Google.
2328 *) Initial indirect CRL support. Currently only supported in the CRLs
2329 passed directly and not via lookup. Process certificate issuer
2330 CRL entry extension and lookup CRL entries by bother issuer name
2331 and serial number. Check and process CRL issuer entry in IDP extension.
2333 This work was sponsored by Google.
2336 *) Add support for distinct certificate and CRL paths. The CRL issuer
2337 certificate is validated separately in this case. Only enabled if
2338 an extended CRL support flag is set: this flag will enable additional
2339 CRL functionality in future.
2341 This work was sponsored by Google.
2344 *) Add support for policy mappings extension.
2346 This work was sponsored by Google.
2349 *) Fixes to pathlength constraint, self issued certificate handling,
2350 policy processing to align with RFC3280 and PKITS tests.
2352 This work was sponsored by Google.
2355 *) Support for name constraints certificate extension. DN, email, DNS
2356 and URI types are currently supported.
2358 This work was sponsored by Google.
2361 *) To cater for systems that provide a pointer-based thread ID rather
2362 than numeric, deprecate the current numeric thread ID mechanism and
2363 replace it with a structure and associated callback type. This
2364 mechanism allows a numeric "hash" to be extracted from a thread ID in
2365 either case, and on platforms where pointers are larger than 'long',
2366 mixing is done to help ensure the numeric 'hash' is usable even if it
2367 can't be guaranteed unique. The default mechanism is to use "&errno"
2368 as a pointer-based thread ID to distinguish between threads.
2370 Applications that want to provide their own thread IDs should now use
2371 CRYPTO_THREADID_set_callback() to register a callback that will call
2372 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
2374 Note that ERR_remove_state() is now deprecated, because it is tied
2375 to the assumption that thread IDs are numeric. ERR_remove_state(0)
2376 to free the current thread's error state should be replaced by
2377 ERR_remove_thread_state(NULL).
2379 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
2380 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
2381 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
2382 application was previously providing a numeric thread callback that
2383 was inappropriate for distinguishing threads, then uniqueness might
2384 have been obtained with &errno that happened immediately in the
2385 intermediate development versions of OpenSSL; this is no longer the
2386 case, the numeric thread callback will now override the automatic use
2388 [Geoff Thorpe, with help from Bodo Moeller]
2390 *) Initial support for different CRL issuing certificates. This covers a
2391 simple case where the self issued certificates in the chain exist and
2392 the real CRL issuer is higher in the existing chain.
2394 This work was sponsored by Google.
2397 *) Removed effectively defunct crypto/store from the build.
2400 *) Revamp of STACK to provide stronger type-checking. Still to come:
2401 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
2402 ASN1_STRING, CONF_VALUE.
2405 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
2406 RAM on SSL connections. This option can save about 34k per idle SSL.
2409 *) Revamp of LHASH to provide stronger type-checking. Still to come:
2410 STACK, TXT_DB, bsearch, qsort.
2413 *) Initial support for Cryptographic Message Syntax (aka CMS) based
2414 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
2415 support for data, signedData, compressedData, digestedData and
2416 encryptedData, envelopedData types included. Scripts to check against
2417 RFC4134 examples draft and interop and consistency checks of many
2418 content types and variants.
2421 *) Add options to enc utility to support use of zlib compression BIO.
2424 *) Extend mk1mf to support importing of options and assembly language
2425 files from Configure script, currently only included in VC-WIN32.
2426 The assembly language rules can now optionally generate the source
2427 files from the associated perl scripts.
2430 *) Implement remaining functionality needed to support GOST ciphersuites.
2431 Interop testing has been performed using CryptoPro implementations.
2432 [Victor B. Wagner <vitus@cryptocom.ru>]
2434 *) s390x assembler pack.
2437 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
2441 *) Implement Opaque PRF Input TLS extension as specified in
2442 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
2443 official specification yet and no extension type assignment by
2444 IANA exists, this extension (for now) will have to be explicitly
2445 enabled when building OpenSSL by providing the extension number
2446 to use. For example, specify an option
2448 -DTLSEXT_TYPE_opaque_prf_input=0x9527
2450 to the "config" or "Configure" script to enable the extension,
2451 assuming extension number 0x9527 (which is a completely arbitrary
2452 and unofficial assignment based on the MD5 hash of the Internet
2453 Draft). Note that by doing so, you potentially lose
2454 interoperability with other TLS implementations since these might
2455 be using the same extension number for other purposes.
2457 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
2458 opaque PRF input value to use in the handshake. This will create
2459 an interal copy of the length-'len' string at 'src', and will
2460 return non-zero for success.
2462 To get more control and flexibility, provide a callback function
2465 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
2466 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
2470 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
2473 Callback function 'cb' will be called in handshakes, and is
2474 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
2475 Argument 'arg' is for application purposes (the value as given to
2476 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
2477 be provided to the callback function). The callback function
2478 has to return non-zero to report success: usually 1 to use opaque
2479 PRF input just if possible, or 2 to enforce use of the opaque PRF
2480 input. In the latter case, the library will abort the handshake
2481 if opaque PRF input is not successfully negotiated.
2483 Arguments 'peerinput' and 'len' given to the callback function
2484 will always be NULL and 0 in the case of a client. A server will
2485 see the client's opaque PRF input through these variables if
2486 available (NULL and 0 otherwise). Note that if the server
2487 provides an opaque PRF input, the length must be the same as the
2488 length of the client's opaque PRF input.
2490 Note that the callback function will only be called when creating
2491 a new session (session resumption can resume whatever was
2492 previously negotiated), and will not be called in SSL 2.0
2493 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
2494 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
2495 for applications that need to enforce opaque PRF input.
2499 *) Update ssl code to support digests other than SHA1+MD5 for handshake
2502 [Victor B. Wagner <vitus@cryptocom.ru>]
2504 *) Add RFC4507 support to OpenSSL. This includes the corrections in
2505 RFC4507bis. The encrypted ticket format is an encrypted encoded
2506 SSL_SESSION structure, that way new session features are automatically
2509 If a client application caches session in an SSL_SESSION structure
2510 support is transparent because tickets are now stored in the encoded
2513 The SSL_CTX structure automatically generates keys for ticket
2514 protection in servers so again support should be possible
2515 with no application modification.
2517 If a client or server wishes to disable RFC4507 support then the option
2518 SSL_OP_NO_TICKET can be set.
2520 Add a TLS extension debugging callback to allow the contents of any client
2521 or server extensions to be examined.
2523 This work was sponsored by Google.
2526 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
2527 OpenSSL should now compile cleanly on gcc 4.2
2528 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
2530 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
2531 support including streaming MAC support: this is required for GOST
2532 ciphersuite support.
2533 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
2535 *) Add option -stream to use PKCS#7 streaming in smime utility. New
2536 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
2537 to output in BER and PEM format.
2540 *) Experimental support for use of HMAC via EVP_PKEY interface. This
2541 allows HMAC to be handled via the EVP_DigestSign*() interface. The
2542 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
2543 ENGINE support for HMAC keys which are unextractable. New -mac and
2544 -macopt options to dgst utility.
2547 *) New option -sigopt to dgst utility. Update dgst to use
2548 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
2549 alternative signing paramaters such as X9.31 or PSS in the dgst
2553 *) Change ssl_cipher_apply_rule(), the internal function that does
2554 the work each time a ciphersuite string requests enabling
2555 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
2556 removing ("!foo+bar") a class of ciphersuites: Now it maintains
2557 the order of disabled ciphersuites such that those ciphersuites
2558 that most recently went from enabled to disabled not only stay
2559 in order with respect to each other, but also have higher priority
2560 than other disabled ciphersuites the next time ciphersuites are
2563 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
2564 the same ciphersuites as with "HIGH" alone, but in a specific
2565 order where the PSK ciphersuites come first (since they are the
2566 most recently disabled ciphersuites when "HIGH" is parsed).
2568 Also, change ssl_create_cipher_list() (using this new
2569 funcionality) such that between otherwise identical
2570 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
2574 *) Change ssl_create_cipher_list() so that it automatically
2575 arranges the ciphersuites in reasonable order before starting
2576 to process the rule string. Thus, the definition for "DEFAULT"
2577 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
2578 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
2579 This makes it much easier to arrive at a reasonable default order
2580 in applications for which anonymous ciphers are OK (meaning
2581 that you can't actually use DEFAULT).
2582 [Bodo Moeller; suggested by Victor Duchovni]
2584 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
2585 processing) into multiple integers instead of setting
2586 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
2587 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
2588 (These masks as well as the individual bit definitions are hidden
2589 away into the non-exported interface ssl/ssl_locl.h, so this
2590 change to the definition of the SSL_CIPHER structure shouldn't
2591 affect applications.) This give us more bits for each of these
2592 categories, so there is no longer a need to coagulate AES128 and
2593 AES256 into a single algorithm bit, and to coagulate Camellia128
2594 and Camellia256 into a single algorithm bit, which has led to all
2597 Thus, among other things, the kludge introduced in 0.9.7m and
2598 0.9.8e for masking out AES256 independently of AES128 or masking
2599 out Camellia256 independently of AES256 is not needed here in 0.9.9.
2601 With the change, we also introduce new ciphersuite aliases that
2602 so far were missing: "AES128", "AES256", "CAMELLIA128", and
2606 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
2607 Use the leftmost N bytes of the signature input if the input is
2608 larger than the prime q (with N being the size in bytes of q).
2611 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
2612 it yet and it is largely untested.
2615 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
2618 *) Initial incomplete changes to avoid need for function casts in OpenSSL
2619 some compilers (gcc 4.2 and later) reject their use. Safestack is
2620 reimplemented. Update ASN1 to avoid use of legacy functions.
2623 *) Win32/64 targets are linked with Winsock2.
2626 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
2627 to external functions. This can be used to increase CRL handling
2628 efficiency especially when CRLs are very large by (for example) storing
2629 the CRL revoked certificates in a database.
2632 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
2633 new CRLs added to a directory can be used. New command line option
2634 -verify_return_error to s_client and s_server. This causes real errors
2635 to be returned by the verify callback instead of carrying on no matter
2636 what. This reflects the way a "real world" verify callback would behave.
2639 *) GOST engine, supporting several GOST algorithms and public key formats.
2640 Kindly donated by Cryptocom.
2643 *) Partial support for Issuing Distribution Point CRL extension. CRLs
2644 partitioned by DP are handled but no indirect CRL or reason partitioning
2645 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
2646 selected via a scoring technique which handles IDP and AKID in CRLs.
2649 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
2650 will ultimately be used for all verify operations: this will remove the
2651 X509_STORE dependency on certificate verification and allow alternative
2652 lookup methods. X509_STORE based implementations of these two callbacks.
2655 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
2656 Modify get_crl() to find a valid (unexpired) CRL if possible.
2659 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
2660 this would be called X509_CRL_cmp() but that name is already used by
2661 a function that just compares CRL issuer names. Cache several CRL
2662 extensions in X509_CRL structure and cache CRLDP in X509.
2665 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
2666 this maps equivalent X509_NAME structures into a consistent structure.
2667 Name comparison can then be performed rapidly using memcmp().
2670 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
2674 *) Allow digests to supply their own micalg string for S/MIME type using
2675 the ctrl EVP_MD_CTRL_MICALG.
2678 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
2679 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
2680 ctrl. It can then customise the structure before and/or after signing
2684 *) New function OBJ_add_sigid() to allow application defined signature OIDs
2685 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
2686 to free up any added signature OIDs.
2689 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
2690 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
2691 digest and cipher tables. New options added to openssl utility:
2692 list-message-digest-algorithms and list-cipher-algorithms.
2695 *) Change the array representation of binary polynomials: the list
2696 of degrees of non-zero coefficients is now terminated with -1.
2697 Previously it was terminated with 0, which was also part of the
2698 value; thus, the array representation was not applicable to
2699 polynomials where t^0 has coefficient zero. This change makes
2700 the array representation useful in a more general context.
2703 *) Various modifications and fixes to SSL/TLS cipher string
2704 handling. For ECC, the code now distinguishes between fixed ECDH
2705 with RSA certificates on the one hand and with ECDSA certificates
2706 on the other hand, since these are separate ciphersuites. The
2707 unused code for Fortezza ciphersuites has been removed.
2709 For consistency with EDH, ephemeral ECDH is now called "EECDH"
2710 (not "ECDHE"). For consistency with the code for DH
2711 certificates, use of ECDH certificates is now considered ECDH
2712 authentication, not RSA or ECDSA authentication (the latter is
2713 merely the CA's signing algorithm and not actively used in the
2716 The temporary ciphersuite alias "ECCdraft" is no longer
2717 available, and ECC ciphersuites are no longer excluded from "ALL"
2718 and "DEFAULT". The following aliases now exist for RFC 4492
2719 ciphersuites, most of these by analogy with the DH case:
2721 kECDHr - ECDH cert, signed with RSA
2722 kECDHe - ECDH cert, signed with ECDSA
2723 kECDH - ECDH cert (signed with either RSA or ECDSA)
2724 kEECDH - ephemeral ECDH
2725 ECDH - ECDH cert or ephemeral ECDH
2731 AECDH - anonymous ECDH
2732 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
2736 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
2737 Use correct micalg parameters depending on digest(s) in signed message.
2740 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
2741 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
2744 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
2745 an engine to register a method. Add ENGINE lookups for methods and
2746 functional reference processing.
2749 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
2750 EVP_{Sign,Verify}* which allow an application to customise the signature
2754 *) New -resign option to smime utility. This adds one or more signers
2755 to an existing PKCS#7 signedData structure. Also -md option to use an
2756 alternative message digest algorithm for signing.
2759 *) Tidy up PKCS#7 routines and add new functions to make it easier to
2760 create PKCS7 structures containing multiple signers. Update smime
2761 application to support multiple signers.
2764 *) New -macalg option to pkcs12 utility to allow setting of an alternative
2768 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
2769 Reorganize PBE internals to lookup from a static table using NIDs,
2770 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
2771 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
2772 PRF which will be automatically used with PBES2.
2775 *) Replace the algorithm specific calls to generate keys in "req" with the
2779 *) Update PKCS#7 enveloped data routines to use new API. This is now
2780 supported by any public key method supporting the encrypt operation. A
2781 ctrl is added to allow the public key algorithm to examine or modify
2782 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
2786 *) Add a ctrl to asn1 method to allow a public key algorithm to express
2787 a default digest type to use. In most cases this will be SHA1 but some
2788 algorithms (such as GOST) need to specify an alternative digest. The
2789 return value indicates how strong the preference is 1 means optional and
2790 2 is mandatory (that is it is the only supported type). Modify
2791 ASN1_item_sign() to accept a NULL digest argument to indicate it should
2792 use the default md. Update openssl utilities to use the default digest
2793 type for signing if it is not explicitly indicated.
2796 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
2797 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
2798 signing method from the key type. This effectively removes the link
2799 between digests and public key types.
2802 *) Add an OID cross reference table and utility functions. Its purpose is to
2803 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
2804 rsaEncryption. This will allow some of the algorithm specific hackery
2805 needed to use the correct OID to be removed.
2808 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
2809 structures for PKCS7_sign(). They are now set up by the relevant public
2813 *) Add provisional EC pkey method with support for ECDSA and ECDH.
2816 *) Add support for key derivation (agreement) in the API, DH method and
2820 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
2821 public and private key formats. As a side effect these add additional
2822 command line functionality not previously available: DSA signatures can be
2823 generated and verified using pkeyutl and DH key support and generation in
2828 [Oliver Tappe <zooey@hirschkaefer.de>]
2830 *) New make target "install_html_docs" installs HTML renditions of the
2832 [Oliver Tappe <zooey@hirschkaefer.de>]
2834 *) New utility "genpkey" this is analogous to "genrsa" etc except it can
2835 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
2836 support key and parameter generation and add initial key generation
2837 functionality for RSA.
2840 *) Add functions for main EVP_PKEY_method operations. The undocumented
2841 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
2842 EVP_PKEY_{encrypt,decrypt}_old.
2845 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
2846 key API, doesn't do much yet.
2849 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
2850 public key algorithms. New option to openssl utility:
2851 "list-public-key-algorithms" to print out info.
2854 *) Implement the Supported Elliptic Curves Extension for
2855 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
2858 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
2859 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
2862 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
2863 utilities such as rsa, dsa, dsaparam etc except they process any key
2867 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
2868 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
2869 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
2873 *) Initial support for pluggable public key ASN1.
2874 De-spaghettify the public key ASN1 handling. Move public and private
2875 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
2876 algorithm specific handling to a single module within the relevant
2877 algorithm directory. Add functions to allow (near) opaque processing
2878 of public and private key structures.
2881 *) Implement the Supported Point Formats Extension for
2882 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
2885 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
2886 for the psk identity [hint] and the psk callback functions to the
2887 SSL_SESSION, SSL and SSL_CTX structure.
2890 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
2894 SSL_CTX_use_psk_identity_hint
2895 SSL_get_psk_identity_hint
2896 SSL_get_psk_identity
2897 SSL_use_psk_identity_hint
2899 [Mika Kousa and Pasi Eronen of Nokia Corporation]
2901 *) Add RFC 3161 compliant time stamp request creation, response generation
2902 and response verification functionality.
2903 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
2905 *) Add initial support for TLS extensions, specifically for the server_name
2906 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
2907 have new members for a host name. The SSL data structure has an
2908 additional member SSL_CTX *initial_ctx so that new sessions can be
2909 stored in that context to allow for session resumption, even after the
2910 SSL has been switched to a new SSL_CTX in reaction to a client's
2911 server_name extension.
2913 New functions (subject to change):
2915 SSL_get_servername()
2916 SSL_get_servername_type()
2919 New CTRL codes and macros (subject to change):
2921 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
2922 - SSL_CTX_set_tlsext_servername_callback()
2923 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
2924 - SSL_CTX_set_tlsext_servername_arg()
2925 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
2927 openssl s_client has a new '-servername ...' option.
2929 openssl s_server has new options '-servername_host ...', '-cert2 ...',
2930 '-key2 ...', '-servername_fatal' (subject to change). This allows
2931 testing the HostName extension for a specific single host name ('-cert'
2932 and '-key' remain fallbacks for handshakes without HostName
2933 negotiation). If the unrecognized_name alert has to be sent, this by
2934 default is a warning; it becomes fatal with the '-servername_fatal'
2937 [Peter Sylvester, Remy Allais, Christophe Renou]
2939 *) Whirlpool hash implementation is added.
2942 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
2943 bn(64,32). Because of instruction set limitations it doesn't have
2944 any negative impact on performance. This was done mostly in order
2945 to make it possible to share assembler modules, such as bn_mul_mont
2946 implementations, between 32- and 64-bit builds without hassle.
2949 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
2950 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
2954 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
2955 dedicated Montgomery multiplication procedure, is introduced.
2956 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
2957 "64-bit" performance on certain 32-bit targets.
2960 *) New option SSL_OP_NO_COMP to disable use of compression selectively
2961 in SSL structures. New SSL ctrl to set maximum send fragment size.
2962 Save memory by seeting the I/O buffer sizes dynamically instead of
2963 using the maximum available value.
2966 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
2967 in addition to the text details.
2970 *) Very, very preliminary EXPERIMENTAL support for printing of general
2971 ASN1 structures. This currently produces rather ugly output and doesn't
2972 handle several customised structures at all.
2975 *) Integrated support for PVK file format and some related formats such
2976 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
2977 these in the 'rsa' and 'dsa' utilities.
2980 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
2983 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
2984 place for the (very old) "NETSCAPE" format certificates which are now
2985 handled using new ASN1 code equivalents.
2988 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
2989 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
2990 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
2993 *) Modify CRL distribution points extension code to print out previously
2994 unsupported fields. Enhance extension setting code to allow setting of
2998 *) Add print and set support for Issuing Distribution Point CRL extension.
3001 *) Change 'Configure' script to enable Camellia by default.
3004 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
3006 *) When rejecting SSL/TLS records due to an incorrect version number, never
3007 update s->server with a new major version number. As of
3008 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
3009 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
3010 the previous behavior could result in a read attempt at NULL when
3011 receiving specific incorrect SSL/TLS records once record payload
3012 protection is active. (CVE-2010-0740)
3013 [Bodo Moeller, Adam Langley <agl@chromium.org>]
3015 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
3016 could be crashed if the relevant tables were not present (e.g. chrooted).
3017 [Tomas Hoger <thoger@redhat.com>]
3019 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
3021 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
3022 [Martin Olsson, Neel Mehta]
3024 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
3025 accommodate for stack sorting, always a write lock!).
3028 *) On some versions of WIN32 Heap32Next is very slow. This can cause
3029 excessive delays in the RAND_poll(): over a minute. As a workaround
3030 include a time check in the inner Heap32Next loop too.
3033 *) The code that handled flushing of data in SSL/TLS originally used the
3034 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
3035 the problem outlined in PR#1949. The fix suggested there however can
3036 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
3037 of Apache). So instead simplify the code to flush unconditionally.
3038 This should be fine since flushing with no data to flush is a no op.
3041 *) Handle TLS versions 2.0 and later properly and correctly use the
3042 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
3043 off ancient servers have a habit of sticking around for a while...
3046 *) Modify compression code so it frees up structures without using the
3047 ex_data callbacks. This works around a problem where some applications
3048 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
3049 restarting) then use compression (e.g. SSL with compression) later.
3050 This results in significant per-connection memory leaks and
3051 has caused some security issues including CVE-2008-1678 and
3055 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
3056 change when encrypting or decrypting.
3059 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
3060 connect and renegotiate with servers which do not support RI.
3061 Until RI is more widely deployed this option is enabled by default.
3064 *) Add "missing" ssl ctrls to clear options and mode.
3067 *) If client attempts to renegotiate and doesn't support RI respond with
3068 a no_renegotiation alert as required by RFC5746. Some renegotiating
3069 TLS clients will continue a connection gracefully when they receive
3070 the alert. Unfortunately OpenSSL mishandled this alert and would hang
3071 waiting for a server hello which it will never receive. Now we treat a
3072 received no_renegotiation alert as a fatal error. This is because
3073 applications requesting a renegotiation might well expect it to succeed
3074 and would have no code in place to handle the server denying it so the
3075 only safe thing to do is to terminate the connection.
3078 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
3079 peer supports secure renegotiation and 0 otherwise. Print out peer
3080 renegotiation support in s_client/s_server.
3083 *) Replace the highly broken and deprecated SPKAC certification method with
3084 the updated NID creation version. This should correctly handle UTF8.
3087 *) Implement RFC5746. Re-enable renegotiation but require the extension
3088 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
3089 turns out to be a bad idea. It has been replaced by
3090 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
3091 SSL_CTX_set_options(). This is really not recommended unless you
3092 know what you are doing.
3093 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
3095 *) Fixes to stateless session resumption handling. Use initial_ctx when
3096 issuing and attempting to decrypt tickets in case it has changed during
3097 servername handling. Use a non-zero length session ID when attempting
3098 stateless session resumption: this makes it possible to determine if
3099 a resumption has occurred immediately after receiving server hello
3100 (several places in OpenSSL subtly assume this) instead of later in
3104 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
3105 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
3106 fixes for a few places where the return code is not checked
3108 [Julia Lawall <julia@diku.dk>]
3110 *) Add --strict-warnings option to Configure script to include devteam
3111 warnings in other configurations.
3114 *) Add support for --libdir option and LIBDIR variable in makefiles. This
3115 makes it possible to install openssl libraries in locations which
3116 have names other than "lib", for example "/usr/lib64" which some
3118 [Steve Henson, based on patch from Jeremy Utley]
3120 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
3121 X690 8.9.12 and can produce some misleading textual output of OIDs.
3122 [Steve Henson, reported by Dan Kaminsky]
3124 *) Delete MD2 from algorithm tables. This follows the recommendation in
3125 several standards that it is not used in new applications due to
3126 several cryptographic weaknesses. For binary compatibility reasons
3127 the MD2 API is still compiled in by default.
3130 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
3134 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
3135 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
3137 [Guenter <lists@gknw.net>]
3139 *) Fix the server certificate chain building code to use X509_verify_cert(),
3140 it used to have an ad-hoc builder which was unable to cope with anything
3141 other than a simple chain.
3142 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
3144 *) Don't check self signed certificate signatures in X509_verify_cert()
3145 by default (a flag can override this): it just wastes time without
3146 adding any security. As a useful side effect self signed root CAs
3147 with non-FIPS digests are now usable in FIPS mode.
3150 *) In dtls1_process_out_of_seq_message() the check if the current message
3151 is already buffered was missing. For every new message was memory
3152 allocated, allowing an attacker to perform an denial of service attack
3153 with sending out of seq handshake messages until there is no memory
3154 left. Additionally every future messege was buffered, even if the
3155 sequence number made no sense and would be part of another handshake.
3156 So only messages with sequence numbers less than 10 in advance will be
3157 buffered. (CVE-2009-1378)
3158 [Robin Seggelmann, discovered by Daniel Mentz]
3160 *) Records are buffered if they arrive with a future epoch to be
3161 processed after finishing the corresponding handshake. There is
3162 currently no limitation to this buffer allowing an attacker to perform
3163 a DOS attack with sending records with future epochs until there is no
3164 memory left. This patch adds the pqueue_size() function to determine
3165 the size of a buffer and limits the record buffer to 100 entries.
3167 [Robin Seggelmann, discovered by Daniel Mentz]
3169 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
3170 parent structure is freed. (CVE-2009-1379)
3173 *) Handle non-blocking I/O properly in SSL_shutdown() call.
3174 [Darryl Miles <darryl-mailinglists@netbauds.net>]
3177 [Ilya O. <vrghost@gmail.com>]
3179 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
3181 *) Disable renegotiation completely - this fixes a severe security
3182 problem (CVE-2009-3555) at the cost of breaking all
3183 renegotiation. Renegotiation can be re-enabled by setting
3184 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
3185 run-time. This is really not recommended unless you know what
3189 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
3191 *) Don't set val to NULL when freeing up structures, it is freed up by
3192 underlying code. If sizeof(void *) > sizeof(long) this can result in
3193 zeroing past the valid field. (CVE-2009-0789)
3194 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
3196 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
3197 checked correctly. This would allow some invalid signed attributes to
3198 appear to verify correctly. (CVE-2009-0591)
3199 [Ivan Nestlerode <inestlerode@us.ibm.com>]
3201 *) Reject UniversalString and BMPString types with invalid lengths. This
3202 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
3203 a legal length. (CVE-2009-0590)
3206 *) Set S/MIME signing as the default purpose rather than setting it
3207 unconditionally. This allows applications to override it at the store
3211 *) Permit restricted recursion of ASN1 strings. This is needed in practice
3212 to handle some structures.
3215 *) Improve efficiency of mem_gets: don't search whole buffer each time
3217 [Jeremy Shapiro <jnshapir@us.ibm.com>]
3219 *) New -hex option for openssl rand.
3222 *) Print out UTF8String and NumericString when parsing ASN1.
3225 *) Support NumericString type for name components.
3228 *) Allow CC in the environment to override the automatically chosen
3229 compiler. Note that nothing is done to ensure flags work with the
3233 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
3235 *) Properly check EVP_VerifyFinal() and similar return values
3237 [Ben Laurie, Bodo Moeller, Google Security Team]
3239 *) Enable TLS extensions by default.
3242 *) Allow the CHIL engine to be loaded, whether the application is
3243 multithreaded or not. (This does not release the developer from the
3244 obligation to set up the dynamic locking callbacks.)
3245 [Sander Temme <sander@temme.net>]
3247 *) Use correct exit code if there is an error in dgst command.
3248 [Steve Henson; problem pointed out by Roland Dirlewanger]
3250 *) Tweak Configure so that you need to say "experimental-jpake" to enable
3251 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
3254 *) Add experimental JPAKE support, including demo authentication in
3255 s_client and s_server.
3258 *) Set the comparison function in v3_addr_canonize().
3259 [Rob Austein <sra@hactrn.net>]
3261 *) Add support for XMPP STARTTLS in s_client.
3262 [Philip Paeps <philip@freebsd.org>]
3264 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
3265 to ensure that even with this option, only ciphersuites in the
3266 server's preference list will be accepted. (Note that the option
3267 applies only when resuming a session, so the earlier behavior was
3268 just about the algorithm choice for symmetric cryptography.)
3271 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
3273 *) Fix NULL pointer dereference if a DTLS server received
3274 ChangeCipherSpec as first record (CVE-2009-1386).
3277 *) Fix a state transition in s3_srvr.c and d1_srvr.c
3278 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
3281 *) The fix in 0.9.8c that supposedly got rid of unsafe
3282 double-checked locking was incomplete for RSA blinding,
3283 addressing just one layer of what turns out to have been
3284 doubly unsafe triple-checked locking.
3286 So now fix this for real by retiring the MONT_HELPER macro
3287 in crypto/rsa/rsa_eay.c.
3289 [Bodo Moeller; problem pointed out by Marius Schilder]
3291 *) Various precautionary measures:
3293 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
3295 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
3296 (NB: This would require knowledge of the secret session ticket key
3297 to exploit, in which case you'd be SOL either way.)
3299 - Change bn_nist.c so that it will properly handle input BIGNUMs
3300 outside the expected range.
3302 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
3305 [Neel Mehta, Bodo Moeller]
3307 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
3308 the load fails. Useful for distros.
3309 [Ben Laurie and the FreeBSD team]
3311 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
3314 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
3317 *) Expand ENGINE to support engine supplied SSL client certificate functions.
3319 This work was sponsored by Logica.
3322 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
3323 keystores. Support for SSL/TLS client authentication too.
3324 Not compiled unless enable-capieng specified to Configure.
3326 This work was sponsored by Logica.
3329 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
3330 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
3331 attribute creation routines such as certifcate requests and PKCS#12
3335 Changes between 0.9.8g and 0.9.8h [28 May 2008]
3337 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
3338 handshake which could lead to a cilent crash as found using the
3339 Codenomicon TLS test suite (CVE-2008-1672)
3340 [Steve Henson, Mark Cox]
3342 *) Fix double free in TLS server name extensions which could lead to
3343 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
3346 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
3348 Clear the error queue to ensure that error entries left from
3349 older function calls do not interfere with the correct operation.
3350 [Lutz Jaenicke, Erik de Castro Lopo]
3352 *) Remove root CA certificates of commercial CAs:
3354 The OpenSSL project does not recommend any specific CA and does not
3355 have any policy with respect to including or excluding any CA.
3356 Therefore it does not make any sense to ship an arbitrary selection
3357 of root CA certificates with the OpenSSL software.
3360 *) RSA OAEP patches to fix two separate invalid memory reads.
3361 The first one involves inputs when 'lzero' is greater than
3362 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
3363 before the beginning of from). The second one involves inputs where
3364 the 'db' section contains nothing but zeroes (there is a one-byte
3365 invalid read after the end of 'db').
3366 [Ivan Nestlerode <inestlerode@us.ibm.com>]
3368 *) Partial backport from 0.9.9-dev:
3370 Introduce bn_mul_mont (dedicated Montgomery multiplication
3371 procedure) as a candidate for BIGNUM assembler implementation.
3372 While 0.9.9-dev uses assembler for various architectures, only
3373 x86_64 is available by default here in the 0.9.8 branch, and
3374 32-bit x86 is available through a compile-time setting.
3376 To try the 32-bit x86 assembler implementation, use Configure
3377 option "enable-montasm" (which exists only for this backport).
3379 As "enable-montasm" for 32-bit x86 disclaims code stability
3380 anyway, in this constellation we activate additional code
3381 backported from 0.9.9-dev for further performance improvements,
3382 namely BN_from_montgomery_word. (To enable this otherwise,
3383 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
3385 [Andy Polyakov (backport partially by Bodo Moeller)]
3387 *) Add TLS session ticket callback. This allows an application to set
3388 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
3389 values. This is useful for key rollover for example where several key
3390 sets may exist with different names.
3393 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
3394 This was broken until now in 0.9.8 releases, such that the only way
3395 a registered ENGINE could be used (assuming it initialises
3396 successfully on the host) was to explicitly set it as the default
3397 for the relevant algorithms. This is in contradiction with 0.9.7
3398 behaviour and the documentation. With this fix, when an ENGINE is
3399 registered into a given algorithm's table of implementations, the
3400 'uptodate' flag is reset so that auto-discovery will be used next
3401 time a new context for that algorithm attempts to select an
3403 [Ian Lister (tweaked by Geoff Thorpe)]
3405 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
3406 implemention in the following ways:
3408 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
3411 Lack of BER streaming support means one pass streaming processing is
3412 only supported if data is detached: setting the streaming flag is
3413 ignored for embedded content.
3415 CMS support is disabled by default and must be explicitly enabled
3416 with the enable-cms configuration option.
3419 *) Update the GMP engine glue to do direct copies between BIGNUM and
3420 mpz_t when openssl and GMP use the same limb size. Otherwise the
3421 existing "conversion via a text string export" trick is still used.
3422 [Paul Sheer <paulsheer@gmail.com>]
3424 *) Zlib compression BIO. This is a filter BIO which compressed and
3425 uncompresses any data passed through it.
3428 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
3429 RFC3394 compatible AES key wrapping.
3432 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
3433 sets string data without copying. X509_ALGOR_set0() and
3434 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
3435 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
3436 from an X509_ATTRIBUTE structure optionally checking it occurs only
3437 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
3441 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
3442 to get the expected BN_FLG_CONSTTIME behavior.
3443 [Bodo Moeller (Google)]
3447 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
3448 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
3449 - added some more tests to do_tests.pl
3450 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
3451 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
3452 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
3453 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
3454 - various changes to netware.pl to enable gcc-cross builds on Win32
3456 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
3457 - various changes to fix missing prototype warnings
3458 - fixed x86nasm.pl to create correct asm files for NASM COFF output
3459 - added AES, WHIRLPOOL and CPUID assembler code to build files
3460 - added missing AES assembler make rules to mk1mf.pl
3461 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
3462 [Guenter Knauf <eflash@gmx.net>]
3464 *) Implement certificate status request TLS extension defined in RFC3546.
3465 A client can set the appropriate parameters and receive the encoded
3466 OCSP response via a callback. A server can query the supplied parameters
3467 and set the encoded OCSP response in the callback. Add simplified examples
3468 to s_client and s_server.
3471 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
3473 *) Fix various bugs:
3474 + Binary incompatibility of ssl_ctx_st structure
3475 + DTLS interoperation with non-compliant servers
3476 + Don't call get_session_cb() without proposed session
3477 + Fix ia64 assembler code
3478 [Andy Polyakov, Steve Henson]
3480 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
3482 *) DTLS Handshake overhaul. There were longstanding issues with
3483 OpenSSL DTLS implementation, which were making it impossible for
3484 RFC 4347 compliant client to communicate with OpenSSL server.
3485 Unfortunately just fixing these incompatibilities would "cut off"
3486 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
3487 server keeps tolerating non RFC compliant syntax. The opposite is
3488 not true, 0.9.8f client can not communicate with earlier server.
3489 This update even addresses CVE-2007-4995.
3492 *) Changes to avoid need for function casts in OpenSSL: some compilers
3493 (gcc 4.2 and later) reject their use.
3494 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
3497 *) Add RFC4507 support to OpenSSL. This includes the corrections in
3498 RFC4507bis. The encrypted ticket format is an encrypted encoded
3499 SSL_SESSION structure, that way new session features are automatically
3502 If a client application caches session in an SSL_SESSION structure
3503 support is transparent because tickets are now stored in the encoded
3506 The SSL_CTX structure automatically generates keys for ticket
3507 protection in servers so again support should be possible
3508 with no application modification.
3510 If a client or server wishes to disable RFC4507 support then the option
3511 SSL_OP_NO_TICKET can be set.
3513 Add a TLS extension debugging callback to allow the contents of any client
3514 or server extensions to be examined.
3516 This work was sponsored by Google.
3519 *) Add initial support for TLS extensions, specifically for the server_name
3520 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
3521 have new members for a host name. The SSL data structure has an
3522 additional member SSL_CTX *initial_ctx so that new sessions can be
3523 stored in that context to allow for session resumption, even after the
3524 SSL has been switched to a new SSL_CTX in reaction to a client's
3525 server_name extension.
3527 New functions (subject to change):
3529 SSL_get_servername()
3530 SSL_get_servername_type()
3533 New CTRL codes and macros (subject to change):
3535 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
3536 - SSL_CTX_set_tlsext_servername_callback()
3537 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
3538 - SSL_CTX_set_tlsext_servername_arg()
3539 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
3541 openssl s_client has a new '-servername ...' option.
3543 openssl s_server has new options '-servername_host ...', '-cert2 ...',
3544 '-key2 ...', '-servername_fatal' (subject to change). This allows
3545 testing the HostName extension for a specific single host name ('-cert'
3546 and '-key' remain fallbacks for handshakes without HostName
3547 negotiation). If the unrecognized_name alert has to be sent, this by
3548 default is a warning; it becomes fatal with the '-servername_fatal'
3551 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
3553 *) Add AES and SSE2 assembly language support to VC++ build.
3556 *) Mitigate attack on final subtraction in Montgomery reduction.
3559 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
3560 (which previously caused an internal error).
3563 *) Squeeze another 10% out of IGE mode when in != out.
3566 *) AES IGE mode speedup.
3567 [Dean Gaudet (Google)]
3569 *) Add the Korean symmetric 128-bit cipher SEED (see
3570 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
3571 add SEED ciphersuites from RFC 4162:
3573 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
3574 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
3575 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
3576 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
3578 To minimize changes between patchlevels in the OpenSSL 0.9.8
3579 series, SEED remains excluded from compilation unless OpenSSL
3580 is configured with 'enable-seed'.
3581 [KISA, Bodo Moeller]
3583 *) Mitigate branch prediction attacks, which can be practical if a
3584 single processor is shared, allowing a spy process to extract
3585 information. For detailed background information, see
3586 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
3587 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
3588 and Necessary Software Countermeasures"). The core of the change
3589 are new versions BN_div_no_branch() and
3590 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
3591 respectively, which are slower, but avoid the security-relevant
3592 conditional branches. These are automatically called by BN_div()
3593 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
3594 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
3595 remove a conditional branch.
3597 BN_FLG_CONSTTIME is the new name for the previous
3598 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
3599 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
3600 in the exponent causes BN_mod_exp_mont() to use the alternative
3601 implementation in BN_mod_exp_mont_consttime().) The old name
3602 remains as a deprecated alias.
3604 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
3605 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
3606 constant-time implementations for more than just exponentiation.
3607 Here too the old name is kept as a deprecated alias.
3609 BN_BLINDING_new() will now use BN_dup() for the modulus so that
3610 the BN_BLINDING structure gets an independent copy of the
3611 modulus. This means that the previous "BIGNUM *m" argument to
3612 BN_BLINDING_new() and to BN_BLINDING_create_param() now
3613 essentially becomes "const BIGNUM *m", although we can't actually
3614 change this in the header file before 0.9.9. It allows
3615 RSA_setup_blinding() to use BN_with_flags() on the modulus to
3616 enable BN_FLG_CONSTTIME.
3618 [Matthew D Wood (Intel Corp)]
3620 *) In the SSL/TLS server implementation, be strict about session ID
3621 context matching (which matters if an application uses a single
3622 external cache for different purposes). Previously,
3623 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
3624 set. This did ensure strict client verification, but meant that,
3625 with applications using a single external cache for quite
3626 different requirements, clients could circumvent ciphersuite
3627 restrictions for a given session ID context by starting a session
3628 in a different context.
3631 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
3632 a ciphersuite string such as "DEFAULT:RSA" cannot enable
3633 authentication-only ciphersuites.
3636 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
3637 not complete and could lead to a possible single byte overflow
3638 (CVE-2007-5135) [Ben Laurie]
3640 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
3642 *) Since AES128 and AES256 (and similarly Camellia128 and
3643 Camellia256) share a single mask bit in the logic of
3644 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
3645 kludge to work properly if AES128 is available and AES256 isn't
3646 (or if Camellia128 is available and Camellia256 isn't).
3649 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
3650 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
3651 When a point or a seed is encoded in a BIT STRING, we need to
3652 prevent the removal of trailing zero bits to get the proper DER
3653 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
3654 of a NamedBitList, for which trailing 0 bits need to be removed.)
3657 *) Have SSL/TLS server implementation tolerate "mismatched" record
3658 protocol version while receiving ClientHello even if the
3659 ClientHello is fragmented. (The server can't insist on the
3660 particular protocol version it has chosen before the ServerHello
3661 message has informed the client about his choice.)
3664 *) Add RFC 3779 support.
3665 [Rob Austein for ARIN, Ben Laurie]
3667 *) Load error codes if they are not already present instead of using a
3668 static variable. This allows them to be cleanly unloaded and reloaded.
3669 Improve header file function name parsing.
3672 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
3673 or CAPABILITY handshake as required by RFCs.
3676 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
3678 *) Introduce limits to prevent malicious keys being able to
3679 cause a denial of service. (CVE-2006-2940)
3680 [Steve Henson, Bodo Moeller]
3682 *) Fix ASN.1 parsing of certain invalid structures that can result
3683 in a denial of service. (CVE-2006-2937) [Steve Henson]
3685 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
3686 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
3688 *) Fix SSL client code which could crash if connecting to a
3689 malicious SSLv2 server. (CVE-2006-4343)
3690 [Tavis Ormandy and Will Drewry, Google Security Team]
3692 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
3693 match only those. Before that, "AES256-SHA" would be interpreted
3694 as a pattern and match "AES128-SHA" too (since AES128-SHA got
3695 the same strength classification in 0.9.7h) as we currently only
3696 have a single AES bit in the ciphersuite description bitmap.
3697 That change, however, also applied to ciphersuite strings such as
3698 "RC4-MD5" that intentionally matched multiple ciphersuites --
3699 namely, SSL 2.0 ciphersuites in addition to the more common ones
3700 from SSL 3.0/TLS 1.0.
3702 So we change the selection algorithm again: Naming an explicit
3703 ciphersuite selects this one ciphersuite, and any other similar
3704 ciphersuite (same bitmap) from *other* protocol versions.
3705 Thus, "RC4-MD5" again will properly select both the SSL 2.0
3706 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
3708 Since SSL 2.0 does not have any ciphersuites for which the
3709 128/256 bit distinction would be relevant, this works for now.
3710 The proper fix will be to use different bits for AES128 and
3711 AES256, which would have avoided the problems from the beginning;
3712 however, bits are scarce, so we can only do this in a new release
3713 (not just a patchlevel) when we can change the SSL_CIPHER
3714 definition to split the single 'unsigned long mask' bitmap into
3715 multiple values to extend the available space.
3719 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
3721 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
3722 (CVE-2006-4339) [Ben Laurie and Google Security Team]
3724 *) Add AES IGE and biIGE modes.
3727 *) Change the Unix randomness entropy gathering to use poll() when
3728 possible instead of select(), since the latter has some
3729 undesirable limitations.
3730 [Darryl Miles via Richard Levitte and Bodo Moeller]
3732 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
3733 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
3734 cannot be implicitly activated as part of, e.g., the "AES" alias.
3735 However, please upgrade to OpenSSL 0.9.9[-dev] for
3736 non-experimental use of the ECC ciphersuites to get TLS extension
3737 support, which is required for curve and point format negotiation
3738 to avoid potential handshake problems.
3741 *) Disable rogue ciphersuites:
3743 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
3744 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
3745 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
3747 The latter two were purportedly from
3748 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
3751 Also deactivate the remaining ciphersuites from
3752 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
3753 unofficial, and the ID has long expired.
3756 *) Fix RSA blinding Heisenbug (problems sometimes occured on
3757 dual-core machines) and other potential thread-safety issues.
3760 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
3761 versions), which is now available for royalty-free use
3762 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
3763 Also, add Camellia TLS ciphersuites from RFC 4132.
3765 To minimize changes between patchlevels in the OpenSSL 0.9.8
3766 series, Camellia remains excluded from compilation unless OpenSSL
3767 is configured with 'enable-camellia'.
3770 *) Disable the padding bug check when compression is in use. The padding
3771 bug check assumes the first packet is of even length, this is not
3772 necessarily true if compresssion is enabled and can result in false
3773 positives causing handshake failure. The actual bug test is ancient
3774 code so it is hoped that implementations will either have fixed it by
3775 now or any which still have the bug do not support compression.
3778 Changes between 0.9.8a and 0.9.8b [04 May 2006]
3780 *) When applying a cipher rule check to see if string match is an explicit
3781 cipher suite and only match that one cipher suite if it is.
3784 *) Link in manifests for VC++ if needed.
3785 [Austin Ziegler <halostatue@gmail.com>]
3787 *) Update support for ECC-based TLS ciphersuites according to
3788 draft-ietf-tls-ecc-12.txt with proposed changes (but without
3789 TLS extensions, which are supported starting with the 0.9.9
3790 branch, not in the OpenSSL 0.9.8 branch).
3793 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
3794 opaque EVP_CIPHER_CTX handling.
3797 *) Fixes and enhancements to zlib compression code. We now only use
3798 "zlib1.dll" and use the default __cdecl calling convention on Win32
3799 to conform with the standards mentioned here:
3800 http://www.zlib.net/DLL_FAQ.txt
3801 Static zlib linking now works on Windows and the new --with-zlib-include
3802 --with-zlib-lib options to Configure can be used to supply the location
3803 of the headers and library. Gracefully handle case where zlib library
3807 *) Several fixes and enhancements to the OID generation code. The old code
3808 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
3809 handle numbers larger than ULONG_MAX, truncated printing and had a
3810 non standard OBJ_obj2txt() behaviour.
3813 *) Add support for building of engines under engine/ as shared libraries
3814 under VC++ build system.
3817 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
3818 Hopefully, we will not see any false combination of paths any more.
3821 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
3823 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
3824 (part of SSL_OP_ALL). This option used to disable the
3825 countermeasure against man-in-the-middle protocol-version
3826 rollback in the SSL 2.0 server implementation, which is a bad
3827 idea. (CVE-2005-2969)
3829 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
3830 for Information Security, National Institute of Advanced Industrial
3831 Science and Technology [AIST], Japan)]
3833 *) Add two function to clear and return the verify parameter flags.
3836 *) Keep cipherlists sorted in the source instead of sorting them at
3837 runtime, thus removing the need for a lock.
3840 *) Avoid some small subgroup attacks in Diffie-Hellman.
3841 [Nick Mathewson and Ben Laurie]
3843 *) Add functions for well-known primes.
3846 *) Extended Windows CE support.
3847 [Satoshi Nakamura and Andy Polyakov]
3849 *) Initialize SSL_METHOD structures at compile time instead of during
3850 runtime, thus removing the need for a lock.
3853 *) Make PKCS7_decrypt() work even if no certificate is supplied by
3854 attempting to decrypt each encrypted key in turn. Add support to
3858 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
3860 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
3863 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
3866 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
3867 key into the same file any more.
3870 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
3873 *) Add -utf8 command line and config file option to 'ca'.
3874 [Stefan <stf@udoma.org]
3876 *) Removed the macro des_crypt(), as it seems to conflict with some
3877 libraries. Use DES_crypt().
3880 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
3881 involves renaming the source and generated shared-libs for
3882 both. The engines will accept the corrected or legacy ids
3883 ('ncipher' and '4758_cca' respectively) when binding. NB,
3884 this only applies when building 'shared'.
3885 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
3887 *) Add attribute functions to EVP_PKEY structure. Modify
3888 PKCS12_create() to recognize a CSP name attribute and
3889 use it. Make -CSP option work again in pkcs12 utility.
3892 *) Add new functionality to the bn blinding code:
3893 - automatic re-creation of the BN_BLINDING parameters after
3894 a fixed number of uses (currently 32)
3895 - add new function for parameter creation
3896 - introduce flags to control the update behaviour of the
3897 BN_BLINDING parameters
3898 - hide BN_BLINDING structure
3899 Add a second BN_BLINDING slot to the RSA structure to improve
3900 performance when a single RSA object is shared among several
3904 *) Add support for DTLS.
3905 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
3907 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
3908 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
3911 *) Remove buggy and incomplete DH cert support from
3912 ssl/ssl_rsa.c and ssl/s3_both.c
3915 *) Use SHA-1 instead of MD5 as the default digest algorithm for
3916 the apps/openssl applications.
3919 *) Compile clean with "-Wall -Wmissing-prototypes
3920 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
3921 DEBUG_SAFESTACK must also be set.
3924 *) Change ./Configure so that certain algorithms can be disabled by default.
3925 The new counterpiece to "no-xxx" is "enable-xxx".
3927 The patented RC5 and MDC2 algorithms will now be disabled unless
3928 "enable-rc5" and "enable-mdc2", respectively, are specified.
3930 (IDEA remains enabled despite being patented. This is because IDEA
3931 is frequently required for interoperability, and there is no license
3932 fee for non-commercial use. As before, "no-idea" can be used to
3933 avoid this algorithm.)
3937 *) Add processing of proxy certificates (see RFC 3820). This work was
3938 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
3939 EGEE (Enabling Grids for E-science in Europe).
3942 *) RC4 performance overhaul on modern architectures/implementations, such
3943 as Intel P4, IA-64 and AMD64.
3946 *) New utility extract-section.pl. This can be used specify an alternative
3947 section number in a pod file instead of having to treat each file as
3948 a separate case in Makefile. This can be done by adding two lines to the
3951 =for comment openssl_section:XXX
3953 The blank line is mandatory.
3957 *) New arguments -certform, -keyform and -pass for s_client and s_server
3958 to allow alternative format key and certificate files and passphrase
3962 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
3963 update associated structures and add various utility functions.
3965 Add new policy related verify parameters, include policy checking in
3966 standard verify code. Enhance 'smime' application with extra parameters
3967 to support policy checking and print out.
3970 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
3971 Nehemiah processors. These extensions support AES encryption in hardware
3972 as well as RNG (though RNG support is currently disabled).
3973 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
3975 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
3978 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
3979 [Andy Polyakov and a number of other people]
3981 *) Improved PowerPC platform support. Most notably BIGNUM assembler
3982 implementation contributed by IBM.
3983 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
3985 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
3986 exponent rather than 'unsigned long'. There is a corresponding change to
3987 the new 'rsa_keygen' element of the RSA_METHOD structure.
3988 [Jelte Jansen, Geoff Thorpe]
3990 *) Functionality for creating the initial serial number file is now
3991 moved from CA.pl to the 'ca' utility with a new option -create_serial.
3993 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
3994 number file to 1, which is bound to cause problems. To avoid
3995 the problems while respecting compatibility between different 0.9.7
3996 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
3997 CA.pl for serial number initialization. With the new release 0.9.8,
3998 we can fix the problem directly in the 'ca' utility.)
4001 *) Reduced header interdepencies by declaring more opaque objects in
4002 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
4003 give fewer recursive includes, which could break lazy source code - so
4004 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
4005 developers should define this symbol when building and using openssl to
4006 ensure they track the recommended behaviour, interfaces, [etc], but
4007 backwards-compatible behaviour prevails when this isn't defined.
4010 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
4013 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
4014 This will generate a random key of the appropriate length based on the
4015 cipher context. The EVP_CIPHER can provide its own random key generation
4016 routine to support keys of a specific form. This is used in the des and
4017 3des routines to generate a key of the correct parity. Update S/MIME
4018 code to use new functions and hence generate correct parity DES keys.
4019 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
4020 valid (weak or incorrect parity).
4023 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
4024 as looking them up. This is useful when the verified structure may contain
4025 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
4026 present unless the new PKCS7_NO_CRL flag is asserted.
4029 *) Extend ASN1 oid configuration module. It now additionally accepts the
4032 shortName = some long name, 1.2.3.4
4035 *) Reimplemented the BN_CTX implementation. There is now no more static
4036 limitation on the number of variables it can handle nor the depth of the
4037 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
4038 information can now expand as required, and rather than having a single
4039 static array of bignums, BN_CTX now uses a linked-list of such arrays
4040 allowing it to expand on demand whilst maintaining the usefulness of
4041 BN_CTX's "bundling".
4044 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
4045 to allow all RSA operations to function using a single BN_CTX.
4048 *) Preliminary support for certificate policy evaluation and checking. This
4049 is initially intended to pass the tests outlined in "Conformance Testing
4050 of Relying Party Client Certificate Path Processing Logic" v1.07.
4053 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
4054 remained unused and not that useful. A variety of other little bignum
4055 tweaks and fixes have also been made continuing on from the audit (see
4059 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
4060 associated ASN1, EVP and SSL functions and old ASN1 macros.
4063 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
4064 and this should never fail. So the return value from the use of
4065 BN_set_word() (which can fail due to needless expansion) is now deprecated;
4066 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
4069 *) BN_CTX_get() should return zero-valued bignums, providing the same
4070 initialised value as BN_new().
4071 [Geoff Thorpe, suggested by Ulf Möller]
4073 *) Support for inhibitAnyPolicy certificate extension.
4076 *) An audit of the BIGNUM code is underway, for which debugging code is
4077 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
4078 is considered valid when processing BIGNUMs, and causes execution to
4079 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
4080 further steps are taken to deliberately pollute unused data in BIGNUM
4081 structures to try and expose faulty code further on. For now, openssl will
4082 (in its default mode of operation) continue to tolerate the inconsistent
4083 forms that it has tolerated in the past, but authors and packagers should
4084 consider trying openssl and their own applications when compiled with
4085 these debugging symbols defined. It will help highlight potential bugs in
4086 their own code, and will improve the test coverage for OpenSSL itself. At
4087 some point, these tighter rules will become openssl's default to improve
4088 maintainability, though the assert()s and other overheads will remain only
4089 in debugging configurations. See bn.h for more details.
4090 [Geoff Thorpe, Nils Larsch, Ulf Möller]
4092 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
4093 that can only be obtained through BN_CTX_new() (which implicitly
4094 initialises it). The presence of this function only made it possible
4095 to overwrite an existing structure (and cause memory leaks).
4098 *) Because of the callback-based approach for implementing LHASH as a
4099 template type, lh_insert() adds opaque objects to hash-tables and
4100 lh_doall() or lh_doall_arg() are typically used with a destructor callback
4101 to clean up those corresponding objects before destroying the hash table
4102 (and losing the object pointers). So some over-zealous constifications in
4103 LHASH have been relaxed so that lh_insert() does not take (nor store) the
4104 objects as "const" and the lh_doall[_arg] callback wrappers are not
4105 prototyped to have "const" restrictions on the object pointers they are
4106 given (and so aren't required to cast them away any more).
4109 *) The tmdiff.h API was so ugly and minimal that our own timing utility
4110 (speed) prefers to use its own implementation. The two implementations
4111 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
4112 its object type properly exposed (MS_TM) instead of casting to/from "char
4113 *". This may still change yet if someone realises MS_TM and "ms_time_***"
4114 aren't necessarily the greatest nomenclatures - but this is what was used
4115 internally to the implementation so I've used that for now.
4118 *) Ensure that deprecated functions do not get compiled when
4119 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
4120 the self-tests were still using deprecated key-generation functions so
4121 these have been updated also.
4124 *) Reorganise PKCS#7 code to separate the digest location functionality
4125 into PKCS7_find_digest(), digest addition into PKCS7_bio_add_digest().
4126 New function PKCS7_set_digest() to set the digest type for PKCS#7
4127 digestedData type. Add additional code to correctly generate the
4128 digestedData type and add support for this type in PKCS7 initialization
4132 *) New function PKCS7_set0_type_other() this initializes a PKCS7
4133 structure of type "other".
4136 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
4137 sure the loop does correctly stop and breaking ("division by zero")
4138 modulus operations are not performed. The (pre-generated) prime
4139 table crypto/bn/bn_prime.h was already correct, but it could not be
4140 re-generated on some platforms because of the "division by zero"
4141 situation in the script.
4142 [Ralf S. Engelschall]
4144 *) Update support for ECC-based TLS ciphersuites according to
4145 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
4146 SHA-1 now is only used for "small" curves (where the
4147 representation of a field element takes up to 24 bytes); for
4148 larger curves, the field element resulting from ECDH is directly
4149 used as premaster secret.
4150 [Douglas Stebila (Sun Microsystems Laboratories)]
4152 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
4153 curve secp160r1 to the tests.
4154 [Douglas Stebila (Sun Microsystems Laboratories)]
4156 *) Add the possibility to load symbols globally with DSO.
4157 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
4159 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
4160 control of the error stack.
4163 *) Add support for STORE in ENGINE.
4166 *) Add the STORE type. The intention is to provide a common interface
4167 to certificate and key stores, be they simple file-based stores, or
4168 HSM-type store, or LDAP stores, or...
4169 NOTE: The code is currently UNTESTED and isn't really used anywhere.
4172 *) Add a generic structure called OPENSSL_ITEM. This can be used to
4173 pass a list of arguments to any function as well as provide a way
4174 for a function to pass data back to the caller.
4177 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
4178 works like BUF_strdup() but can be used to duplicate a portion of
4179 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
4183 *) Add the function sk_find_ex() which works like sk_find(), but will
4184 return an index to an element even if an exact match couldn't be
4185 found. The index is guaranteed to point at the element where the
4186 searched-for key would be inserted to preserve sorting order.
4189 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
4190 takes an extra flags argument for optional functionality. Currently,
4191 the following flags are defined:
4193 OBJ_BSEARCH_VALUE_ON_NOMATCH
4194 This one gets OBJ_bsearch_ex() to return a pointer to the first
4195 element where the comparing function returns a negative or zero
4198 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
4199 This one gets OBJ_bsearch_ex() to return a pointer to the first
4200 element where the comparing function returns zero. This is useful
4201 if there are more than one element where the comparing function
4205 *) Make it possible to create self-signed certificates with 'openssl ca'
4206 in such a way that the self-signed certificate becomes part of the
4207 CA database and uses the same mechanisms for serial number generation
4208 as all other certificate signing. The new flag '-selfsign' enables
4209 this functionality. Adapt CA.sh and CA.pl.in.
4212 *) Add functionality to check the public key of a certificate request
4213 against a given private. This is useful to check that a certificate
4214 request can be signed by that key (self-signing).
4217 *) Make it possible to have multiple active certificates with the same
4218 subject in the CA index file. This is done only if the keyword
4219 'unique_subject' is set to 'no' in the main CA section (default
4220 if 'CA_default') of the configuration file. The value is saved
4221 with the database itself in a separate index attribute file,
4222 named like the index file with '.attr' appended to the name.
4225 *) Generate muti valued AVAs using '+' notation in config files for
4229 *) Support for nameConstraints certificate extension.
4232 *) Support for policyConstraints certificate extension.
4235 *) Support for policyMappings certificate extension.
4238 *) Make sure the default DSA_METHOD implementation only uses its
4239 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
4240 and change its own handlers to be NULL so as to remove unnecessary
4241 indirection. This lets alternative implementations fallback to the
4242 default implementation more easily.
4245 *) Support for directoryName in GeneralName related extensions
4249 *) Make it possible to link applications using Makefile.shared.
4250 Make that possible even when linking against static libraries!
4253 *) Support for single pass processing for S/MIME signing. This now
4254 means that S/MIME signing can be done from a pipe, in addition
4255 cleartext signing (multipart/signed type) is effectively streaming
4256 and the signed data does not need to be all held in memory.
4258 This is done with a new flag PKCS7_STREAM. When this flag is set
4259 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
4260 is done after the data is output (and digests calculated) in
4261 SMIME_write_PKCS7().
4264 *) Add full support for -rpath/-R, both in shared libraries and
4265 applications, at least on the platforms where it's known how
4269 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
4270 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
4271 will now compute a table of multiples of the generator that
4272 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
4273 faster (notably in the case of a single point multiplication,
4274 scalar * generator).
4275 [Nils Larsch, Bodo Moeller]
4277 *) IPv6 support for certificate extensions. The various extensions
4278 which use the IP:a.b.c.d can now take IPv6 addresses using the
4279 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
4283 *) Added an ENGINE that implements RSA by performing private key
4284 exponentiations with the GMP library. The conversions to and from
4285 GMP's mpz_t format aren't optimised nor are any montgomery forms
4286 cached, and on x86 it appears OpenSSL's own performance has caught up.
4287 However there are likely to be other architectures where GMP could
4288 provide a boost. This ENGINE is not built in by default, but it can be
4289 specified at Configure time and should be accompanied by the necessary
4290 linker additions, eg;
4291 ./config -DOPENSSL_USE_GMP -lgmp
4294 *) "openssl engine" will not display ENGINE/DSO load failure errors when
4295 testing availability of engines with "-t" - the old behaviour is
4296 produced by increasing the feature's verbosity with "-tt".
4299 *) ECDSA routines: under certain error conditions uninitialized BN objects
4300 could be freed. Solution: make sure initialization is performed early
4301 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
4305 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
4306 and DH_METHOD (eg. by ENGINE implementations) to override the normal
4307 software implementations. For DSA and DH, parameter generation can
4308 also be overriden by providing the appropriate method callbacks.
4311 *) Change the "progress" mechanism used in key-generation and
4312 primality testing to functions that take a new BN_GENCB pointer in
4313 place of callback/argument pairs. The new API functions have "_ex"
4314 postfixes and the older functions are reimplemented as wrappers for
4315 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
4316 declarations of the old functions to help (graceful) attempts to
4317 migrate to the new functions. Also, the new key-generation API
4318 functions operate on a caller-supplied key-structure and return
4319 success/failure rather than returning a key or NULL - this is to
4320 help make "keygen" another member function of RSA_METHOD etc.
4322 Example for using the new callback interface:
4324 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
4328 BN_GENCB_set(&my_cb, my_callback, my_arg);
4330 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
4331 /* For the meaning of a, b in calls to my_callback(), see the
4332 * documentation of the function that calls the callback.
4333 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
4334 * my_callback should return 1 if it wants BN_is_prime_ex()
4335 * to continue, or 0 to stop.
4340 *) Change the ZLIB compression method to be stateful, and make it
4341 available to TLS with the number defined in
4342 draft-ietf-tls-compression-04.txt.
4345 *) Add the ASN.1 structures and functions for CertificatePair, which
4346 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
4348 CertificatePair ::= SEQUENCE {
4349 forward [0] Certificate OPTIONAL,
4350 reverse [1] Certificate OPTIONAL,
4351 -- at least one of the pair shall be present -- }
4353 Also implement the PEM functions to read and write certificate
4354 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
4356 This needed to be defined, mostly for the sake of the LDAP
4357 attribute crossCertificatePair, but may prove useful elsewhere as
4361 *) Make it possible to inhibit symlinking of shared libraries in
4362 Makefile.shared, for Cygwin's sake.
4365 *) Extend the BIGNUM API by creating a function
4366 void BN_set_negative(BIGNUM *a, int neg);
4367 and a macro that behave like
4368 int BN_is_negative(const BIGNUM *a);
4370 to avoid the need to access 'a->neg' directly in applications.
4373 *) Implement fast modular reduction for pseudo-Mersenne primes
4374 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
4375 EC_GROUP_new_curve_GFp() will now automatically use this
4377 [Nils Larsch <nla@trustcenter.de>]
4379 *) Add new lock type (CRYPTO_LOCK_BN).
4382 *) Change the ENGINE framework to automatically load engines
4383 dynamically from specific directories unless they could be
4384 found to already be built in or loaded. Move all the
4385 current engines except for the cryptodev one to a new
4387 The engines in engines/ are built as shared libraries if
4388 the "shared" options was given to ./Configure or ./config.
4389 Otherwise, they are inserted in libcrypto.a.
4390 /usr/local/ssl/engines is the default directory for dynamic
4391 engines, but that can be overriden at configure time through
4392 the usual use of --prefix and/or --openssldir, and at run
4393 time with the environment variable OPENSSL_ENGINES.
4394 [Geoff Thorpe and Richard Levitte]
4396 *) Add Makefile.shared, a helper makefile to build shared
4397 libraries. Adapt Makefile.org.
4400 *) Add version info to Win32 DLLs.
4401 [Peter 'Luna' Runestig" <peter@runestig.com>]
4403 *) Add new 'medium level' PKCS#12 API. Certificates and keys
4404 can be added using this API to created arbitrary PKCS#12
4405 files while avoiding the low level API.
4407 New options to PKCS12_create(), key or cert can be NULL and
4408 will then be omitted from the output file. The encryption
4409 algorithm NIDs can be set to -1 for no encryption, the mac
4410 iteration count can be set to 0 to omit the mac.
4412 Enhance pkcs12 utility by making the -nokeys and -nocerts
4413 options work when creating a PKCS#12 file. New option -nomac
4414 to omit the mac, NONE can be set for an encryption algorithm.
4415 New code is modified to use the enhanced PKCS12_create()
4416 instead of the low level API.
4419 *) Extend ASN1 encoder to support indefinite length constructed
4420 encoding. This can output sequences tags and octet strings in
4421 this form. Modify pk7_asn1.c to support indefinite length
4422 encoding. This is experimental and needs additional code to
4423 be useful, such as an ASN1 bio and some enhanced streaming
4426 Extend template encode functionality so that tagging is passed
4427 down to the template encoder.
4430 *) Let 'openssl req' fail if an argument to '-newkey' is not
4431 recognized instead of using RSA as a default.
4434 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
4435 As these are not official, they are not included in "ALL";
4436 the "ECCdraft" ciphersuite group alias can be used to select them.
4437 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
4439 *) Add ECDH engine support.
4440 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
4442 *) Add ECDH in new directory crypto/ecdh/.
4443 [Douglas Stebila (Sun Microsystems Laboratories)]
4445 *) Let BN_rand_range() abort with an error after 100 iterations
4446 without success (which indicates a broken PRNG).
4449 *) Change BN_mod_sqrt() so that it verifies that the input value
4450 is really the square of the return value. (Previously,
4451 BN_mod_sqrt would show GIGO behaviour.)
4454 *) Add named elliptic curves over binary fields from X9.62, SECG,
4455 and WAP/WTLS; add OIDs that were still missing.
4457 [Sheueling Chang Shantz and Douglas Stebila
4458 (Sun Microsystems Laboratories)]
4460 *) Extend the EC library for elliptic curves over binary fields
4461 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
4464 EC_GF2m_simple_method
4468 EC_GROUP_new_curve_GF2m
4469 EC_GROUP_set_curve_GF2m
4470 EC_GROUP_get_curve_GF2m
4471 EC_POINT_set_affine_coordinates_GF2m
4472 EC_POINT_get_affine_coordinates_GF2m
4473 EC_POINT_set_compressed_coordinates_GF2m
4475 Point compression for binary fields is disabled by default for
4476 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
4479 As binary polynomials are represented as BIGNUMs, various members
4480 of the EC_GROUP and EC_POINT data structures can be shared
4481 between the implementations for prime fields and binary fields;
4482 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
4483 are essentially identical to their ..._GFp counterparts.
4484 (For simplicity, the '..._GFp' prefix has been dropped from
4485 various internal method names.)
4487 An internal 'field_div' method (similar to 'field_mul' and
4488 'field_sqr') has been added; this is used only for binary fields.
4490 [Sheueling Chang Shantz and Douglas Stebila
4491 (Sun Microsystems Laboratories)]
4493 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
4494 through methods ('mul', 'precompute_mult').
4496 The generic implementations (now internally called 'ec_wNAF_mul'
4497 and 'ec_wNAF_precomputed_mult') remain the default if these
4498 methods are undefined.
4500 [Sheueling Chang Shantz and Douglas Stebila
4501 (Sun Microsystems Laboratories)]
4503 *) New function EC_GROUP_get_degree, which is defined through
4504 EC_METHOD. For curves over prime fields, this returns the bit
4505 length of the modulus.
4507 [Sheueling Chang Shantz and Douglas Stebila
4508 (Sun Microsystems Laboratories)]
4510 *) New functions EC_GROUP_dup, EC_POINT_dup.
4511 (These simply call ..._new and ..._copy).
4513 [Sheueling Chang Shantz and Douglas Stebila
4514 (Sun Microsystems Laboratories)]
4516 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
4517 Polynomials are represented as BIGNUMs (where the sign bit is not
4518 used) in the following functions [macros]:
4521 BN_GF2m_sub [= BN_GF2m_add]
4522 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
4523 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
4524 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
4526 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
4527 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
4528 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
4529 BN_GF2m_cmp [= BN_ucmp]
4531 (Note that only the 'mod' functions are actually for fields GF(2^m).
4532 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
4534 For some functions, an the irreducible polynomial defining a
4535 field can be given as an 'unsigned int[]' with strictly
4536 decreasing elements giving the indices of those bits that are set;
4537 i.e., p[] represents the polynomial
4538 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
4540 p[0] > p[1] > ... > p[k] = 0.
4541 This applies to the following functions:
4546 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
4547 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
4549 BN_GF2m_mod_sqrt_arr
4550 BN_GF2m_mod_solve_quad_arr
4554 Conversion can be performed by the following functions:
4559 bntest.c has additional tests for binary polynomial arithmetic.
4561 Two implementations for BN_GF2m_mod_div() are available.
4562 The default algorithm simply uses BN_GF2m_mod_inv() and
4563 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
4564 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
4565 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
4567 [Sheueling Chang Shantz and Douglas Stebila
4568 (Sun Microsystems Laboratories)]
4570 *) Add new error code 'ERR_R_DISABLED' that can be used when some
4571 functionality is disabled at compile-time.
4572 [Douglas Stebila <douglas.stebila@sun.com>]
4574 *) Change default behaviour of 'openssl asn1parse' so that more
4575 information is visible when viewing, e.g., a certificate:
4577 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
4578 mode the content of non-printable OCTET STRINGs is output in a
4579 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
4580 avoid the appearance of a printable string.
4581 [Nils Larsch <nla@trustcenter.de>]
4583 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
4585 EC_GROUP_set_asn1_flag()
4586 EC_GROUP_get_asn1_flag()
4587 EC_GROUP_set_point_conversion_form()
4588 EC_GROUP_get_point_conversion_form()
4589 These control ASN1 encoding details:
4590 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
4591 has been set to OPENSSL_EC_NAMED_CURVE.
4592 - Points are encoded in uncompressed form by default; options for
4593 asn1_for are as for point2oct, namely
4594 POINT_CONVERSION_COMPRESSED
4595 POINT_CONVERSION_UNCOMPRESSED
4596 POINT_CONVERSION_HYBRID
4598 Also add 'seed' and 'seed_len' members to EC_GROUP with access
4601 EC_GROUP_get0_seed()
4602 EC_GROUP_get_seed_len()
4603 This is used only for ASN1 purposes (so far).
4604 [Nils Larsch <nla@trustcenter.de>]
4606 *) Add 'field_type' member to EC_METHOD, which holds the NID
4607 of the appropriate field type OID. The new function
4608 EC_METHOD_get_field_type() returns this value.
4609 [Nils Larsch <nla@trustcenter.de>]
4614 EC_POINT_point2hex()
4615 EC_POINT_hex2point()
4616 providing useful interfaces to EC_POINT_point2oct() and
4617 EC_POINT_oct2point().
4618 [Nils Larsch <nla@trustcenter.de>]
4620 *) Change internals of the EC library so that the functions
4621 EC_GROUP_set_generator()
4622 EC_GROUP_get_generator()
4623 EC_GROUP_get_order()
4624 EC_GROUP_get_cofactor()
4625 are implemented directly in crypto/ec/ec_lib.c and not dispatched
4626 to methods, which would lead to unnecessary code duplication when
4627 adding different types of curves.
4628 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
4630 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
4631 arithmetic, and such that modified wNAFs are generated
4632 (which avoid length expansion in many cases).
4635 *) Add a function EC_GROUP_check_discriminant() (defined via
4636 EC_METHOD) that verifies that the curve discriminant is non-zero.
4638 Add a function EC_GROUP_check() that makes some sanity tests
4639 on a EC_GROUP, its generator and order. This includes
4640 EC_GROUP_check_discriminant().
4641 [Nils Larsch <nla@trustcenter.de>]
4643 *) Add ECDSA in new directory crypto/ecdsa/.
4645 Add applications 'openssl ecparam' and 'openssl ecdsa'
4646 (these are based on 'openssl dsaparam' and 'openssl dsa').
4648 ECDSA support is also included in various other files across the
4649 library. Most notably,
4650 - 'openssl req' now has a '-newkey ecdsa:file' option;
4651 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
4652 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
4653 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
4654 them suitable for ECDSA where domain parameters must be
4655 extracted before the specific public key;
4656 - ECDSA engine support has been added.
4657 [Nils Larsch <nla@trustcenter.de>]
4659 *) Include some named elliptic curves, and add OIDs from X9.62,
4660 SECG, and WAP/WTLS. Each curve can be obtained from the new
4662 EC_GROUP_new_by_curve_name(),
4663 and the list of available named curves can be obtained with
4664 EC_get_builtin_curves().
4665 Also add a 'curve_name' member to EC_GROUP objects, which can be
4667 EC_GROUP_set_curve_name()
4668 EC_GROUP_get_curve_name()
4669 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
4671 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
4672 was actually never needed) and in BN_mul(). The removal in BN_mul()
4673 required a small change in bn_mul_part_recursive() and the addition
4674 of the functions bn_cmp_part_words(), bn_sub_part_words() and
4675 bn_add_part_words(), which do the same thing as bn_cmp_words(),
4676 bn_sub_words() and bn_add_words() except they take arrays with
4680 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
4682 *) Cleanse PEM buffers before freeing them since they may contain
4684 [Benjamin Bennett <ben@psc.edu>]
4686 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
4687 a ciphersuite string such as "DEFAULT:RSA" cannot enable
4688 authentication-only ciphersuites.
4691 *) Since AES128 and AES256 share a single mask bit in the logic of
4692 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
4693 kludge to work properly if AES128 is available and AES256 isn't.
4696 *) Expand security boundary to match 1.1.1 module.
4699 *) Remove redundant features: hash file source, editing of test vectors
4700 modify fipsld to use external fips_premain.c signature.
4703 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
4704 run algorithm test programs.
4707 *) Make algorithm test programs more tolerant of whitespace.
4710 *) Have SSL/TLS server implementation tolerate "mismatched" record
4711 protocol version while receiving ClientHello even if the
4712 ClientHello is fragmented. (The server can't insist on the
4713 particular protocol version it has chosen before the ServerHello
4714 message has informed the client about his choice.)
4717 *) Load error codes if they are not already present instead of using a
4718 static variable. This allows them to be cleanly unloaded and reloaded.
4721 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
4723 *) Introduce limits to prevent malicious keys being able to
4724 cause a denial of service. (CVE-2006-2940)
4725 [Steve Henson, Bodo Moeller]
4727 *) Fix ASN.1 parsing of certain invalid structures that can result
4728 in a denial of service. (CVE-2006-2937) [Steve Henson]
4730 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
4731 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
4733 *) Fix SSL client code which could crash if connecting to a
4734 malicious SSLv2 server. (CVE-2006-4343)
4735 [Tavis Ormandy and Will Drewry, Google Security Team]
4737 *) Change ciphersuite string processing so that an explicit
4738 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
4739 will no longer include "AES128-SHA"), and any other similar
4740 ciphersuite (same bitmap) from *other* protocol versions (so that
4741 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
4742 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
4743 changes from 0.9.8b and 0.9.8d.
4746 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
4748 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
4749 (CVE-2006-4339) [Ben Laurie and Google Security Team]
4751 *) Change the Unix randomness entropy gathering to use poll() when
4752 possible instead of select(), since the latter has some
4753 undesirable limitations.
4754 [Darryl Miles via Richard Levitte and Bodo Moeller]
4756 *) Disable rogue ciphersuites:
4758 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
4759 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
4760 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
4762 The latter two were purportedly from
4763 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
4766 Also deactive the remaining ciphersuites from
4767 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
4768 unofficial, and the ID has long expired.
4771 *) Fix RSA blinding Heisenbug (problems sometimes occured on
4772 dual-core machines) and other potential thread-safety issues.
4775 Changes between 0.9.7i and 0.9.7j [04 May 2006]
4777 *) Adapt fipsld and the build system to link against the validated FIPS
4778 module in FIPS mode.
4781 *) Fixes for VC++ 2005 build under Windows.
4784 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
4785 from a Windows bash shell such as MSYS. It is autodetected from the
4786 "config" script when run from a VC++ environment. Modify standard VC++
4787 build to use fipscanister.o from the GNU make build.
4790 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
4792 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
4793 The value now differs depending on if you build for FIPS or not.
4794 BEWARE! A program linked with a shared FIPSed libcrypto can't be
4795 safely run with a non-FIPSed libcrypto, as it may crash because of
4796 the difference induced by this change.
4799 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
4801 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
4802 (part of SSL_OP_ALL). This option used to disable the
4803 countermeasure against man-in-the-middle protocol-version
4804 rollback in the SSL 2.0 server implementation, which is a bad
4805 idea. (CVE-2005-2969)
4807 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
4808 for Information Security, National Institute of Advanced Industrial
4809 Science and Technology [AIST], Japan)]
4811 *) Minimal support for X9.31 signatures and PSS padding modes. This is
4812 mainly for FIPS compliance and not fully integrated at this stage.
4815 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
4816 the exponentiation using a fixed-length exponent. (Otherwise,
4817 the information leaked through timing could expose the secret key
4818 after many signatures; cf. Bleichenbacher's attack on DSA with
4822 *) Make a new fixed-window mod_exp implementation the default for
4823 RSA, DSA, and DH private-key operations so that the sequence of
4824 squares and multiplies and the memory access pattern are
4825 independent of the particular secret key. This will mitigate
4826 cache-timing and potential related attacks.
4828 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
4829 and this is automatically used by BN_mod_exp_mont() if the new flag
4830 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
4831 will use this BN flag for private exponents unless the flag
4832 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
4833 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
4835 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
4837 *) Change the client implementation for SSLv23_method() and
4838 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
4839 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
4840 (Previously, the SSL 2.0 backwards compatible Client Hello
4841 message format would be used even with SSL_OP_NO_SSLv2.)
4844 *) Add support for smime-type MIME parameter in S/MIME messages which some
4848 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
4849 a threadsafe manner. Modify rsa code to use new function and add calls
4850 to dsa and dh code (which had race conditions before).
4853 *) Include the fixed error library code in the C error file definitions
4854 instead of fixing them up at runtime. This keeps the error code
4855 structures constant.
4858 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
4860 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
4863 *) Fixes for newer kerberos headers. NB: the casts are needed because
4864 the 'length' field is signed on one version and unsigned on another
4865 with no (?) obvious way to tell the difference, without these VC++
4866 complains. Also the "definition" of FAR (blank) is no longer included
4867 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
4868 some needed definitions.
4871 *) Undo Cygwin change.
4874 *) Added support for proxy certificates according to RFC 3820.
4875 Because they may be a security thread to unaware applications,
4876 they must be explicitely allowed in run-time. See
4877 docs/HOWTO/proxy_certificates.txt for further information.
4880 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
4882 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
4883 server and client random values. Previously
4884 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
4885 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
4887 This change has negligible security impact because:
4889 1. Server and client random values still have 24 bytes of pseudo random
4892 2. Server and client random values are sent in the clear in the initial
4895 3. The master secret is derived using the premaster secret (48 bytes in
4896 size for static RSA ciphersuites) as well as client server and random
4899 The OpenSSL team would like to thank the UK NISCC for bringing this issue
4902 [Stephen Henson, reported by UK NISCC]
4904 *) Use Windows randomness collection on Cygwin.
4907 *) Fix hang in EGD/PRNGD query when communication socket is closed
4908 prematurely by EGD/PRNGD.
4909 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
4911 *) Prompt for pass phrases when appropriate for PKCS12 input format.
4914 *) Back-port of selected performance improvements from development
4915 branch, as well as improved support for PowerPC platforms.
4918 *) Add lots of checks for memory allocation failure, error codes to indicate
4919 failure and freeing up memory if a failure occurs.
4920 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
4922 *) Add new -passin argument to dgst.
4925 *) Perform some character comparisons of different types in X509_NAME_cmp:
4926 this is needed for some certificates that reencode DNs into UTF8Strings
4927 (in violation of RFC3280) and can't or wont issue name rollover
4931 *) Make an explicit check during certificate validation to see that
4932 the CA setting in each certificate on the chain is correct. As a
4933 side effect always do the following basic checks on extensions,
4934 not just when there's an associated purpose to the check:
4936 - if there is an unhandled critical extension (unless the user
4937 has chosen to ignore this fault)
4938 - if the path length has been exceeded (if one is set at all)
4939 - that certain extensions fit the associated purpose (if one has
4943 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
4945 *) Avoid a race condition when CRLs are checked in a multi threaded
4946 environment. This would happen due to the reordering of the revoked
4947 entries during signature checking and serial number lookup. Now the
4948 encoding is cached and the serial number sort performed under a lock.
4949 Add new STACK function sk_is_sorted().
4952 *) Add Delta CRL to the extension code.
4955 *) Various fixes to s3_pkt.c so alerts are sent properly.
4956 [David Holmes <d.holmes@f5.com>]
4958 *) Reduce the chances of duplicate issuer name and serial numbers (in
4959 violation of RFC3280) using the OpenSSL certificate creation utilities.
4960 This is done by creating a random 64 bit value for the initial serial
4961 number when a serial number file is created or when a self signed
4962 certificate is created using 'openssl req -x509'. The initial serial
4963 number file is created using 'openssl x509 -next_serial' in CA.pl
4964 rather than being initialized to 1.
4967 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
4969 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
4970 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
4971 [Joe Orton, Steve Henson]
4973 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
4975 [Joe Orton, Steve Henson]
4977 *) Make it possible to have multiple active certificates with the same
4978 subject in the CA index file. This is done only if the keyword
4979 'unique_subject' is set to 'no' in the main CA section (default
4980 if 'CA_default') of the configuration file. The value is saved
4981 with the database itself in a separate index attribute file,
4982 named like the index file with '.attr' appended to the name.
4985 *) X509 verify fixes. Disable broken certificate workarounds when
4986 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
4987 keyUsage extension present. Don't accept CRLs with unhandled critical
4988 extensions: since verify currently doesn't process CRL extensions this
4989 rejects a CRL with *any* critical extensions. Add new verify error codes
4993 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
4994 A clarification of RFC2560 will require the use of OCTET STRINGs and
4995 some implementations cannot handle the current raw format. Since OpenSSL
4996 copies and compares OCSP nonces as opaque blobs without any attempt at
4997 parsing them this should not create any compatibility issues.
5000 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
5001 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
5002 this HMAC (and other) operations are several times slower than OpenSSL
5006 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
5007 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
5009 *) Use the correct content when signing type "other".
5012 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
5014 *) Fix various bugs revealed by running the NISCC test suite:
5016 Stop out of bounds reads in the ASN1 code when presented with
5017 invalid tags (CVE-2003-0543 and CVE-2003-0544).
5019 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
5021 If verify callback ignores invalid public key errors don't try to check
5022 certificate signature with the NULL public key.
5026 *) New -ignore_err option in ocsp application to stop the server
5027 exiting on the first error in a request.
5030 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
5031 if the server requested one: as stated in TLS 1.0 and SSL 3.0
5035 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
5036 extra data after the compression methods not only for TLS 1.0
5037 but also for SSL 3.0 (as required by the specification).
5038 [Bodo Moeller; problem pointed out by Matthias Loepfe]
5040 *) Change X509_certificate_type() to mark the key as exported/exportable
5041 when it's 512 *bits* long, not 512 bytes.
5044 *) Change AES_cbc_encrypt() so it outputs exact multiple of
5045 blocks during encryption.
5048 *) Various fixes to base64 BIO and non blocking I/O. On write
5049 flushes were not handled properly if the BIO retried. On read
5050 data was not being buffered properly and had various logic bugs.
5051 This also affects blocking I/O when the data being decoded is a
5055 *) Various S/MIME bugfixes and compatibility changes:
5056 output correct application/pkcs7 MIME type if
5057 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
5058 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
5059 of files as .eml work). Correctly handle very long lines in MIME
5063 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
5065 *) Countermeasure against the Klima-Pokorny-Rosa extension of
5066 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
5067 a protocol version number mismatch like a decryption error
5068 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
5071 *) Turn on RSA blinding by default in the default implementation
5072 to avoid a timing attack. Applications that don't want it can call
5073 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
5074 They would be ill-advised to do so in most cases.
5075 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
5077 *) Change RSA blinding code so that it works when the PRNG is not
5078 seeded (in this case, the secret RSA exponent is abused as
5079 an unpredictable seed -- if it is not unpredictable, there
5080 is no point in blinding anyway). Make RSA blinding thread-safe
5081 by remembering the creator's thread ID in rsa->blinding and
5082 having all other threads use local one-time blinding factors
5083 (this requires more computation than sharing rsa->blinding, but
5084 avoids excessive locking; and if an RSA object is not shared
5085 between threads, blinding will still be very fast).
5088 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
5089 ENGINE as defaults for all supported algorithms irrespective of
5090 the 'flags' parameter. 'flags' is now honoured, so applications
5091 should make sure they are passing it correctly.
5094 *) Target "mingw" now allows native Windows code to be generated in
5095 the Cygwin environment as well as with the MinGW compiler.
5098 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
5100 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
5101 via timing by performing a MAC computation even if incorrect
5102 block cipher padding has been found. This is a countermeasure
5103 against active attacks where the attacker has to distinguish
5104 between bad padding and a MAC verification error. (CVE-2003-0078)
5106 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
5107 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
5108 Martin Vuagnoux (EPFL, Ilion)]
5110 *) Make the no-err option work as intended. The intention with no-err
5111 is not to have the whole error stack handling routines removed from
5112 libcrypto, it's only intended to remove all the function name and
5113 reason texts, thereby removing some of the footprint that may not
5114 be interesting if those errors aren't displayed anyway.
5116 NOTE: it's still possible for any application or module to have it's
5117 own set of error texts inserted. The routines are there, just not
5118 used by default when no-err is given.
5121 *) Add support for FreeBSD on IA64.
5122 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
5124 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
5125 Kerberos function mit_des_cbc_cksum(). Before this change,
5126 the value returned by DES_cbc_cksum() was like the one from
5127 mit_des_cbc_cksum(), except the bytes were swapped.
5128 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
5130 *) Allow an application to disable the automatic SSL chain building.
5131 Before this a rather primitive chain build was always performed in
5132 ssl3_output_cert_chain(): an application had no way to send the
5133 correct chain if the automatic operation produced an incorrect result.
5135 Now the chain builder is disabled if either:
5137 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
5139 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
5141 The reasoning behind this is that an application would not want the
5142 auto chain building to take place if extra chain certificates are
5143 present and it might also want a means of sending no additional
5144 certificates (for example the chain has two certificates and the
5148 *) Add the possibility to build without the ENGINE framework.
5149 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
5151 *) Under Win32 gmtime() can return NULL: check return value in
5152 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
5155 *) DSA routines: under certain error conditions uninitialized BN objects
5156 could be freed. Solution: make sure initialization is performed early
5157 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
5158 Nils Larsch <nla@trustcenter.de> via PR#459)
5161 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
5162 checked on reconnect on the client side, therefore session resumption
5163 could still fail with a "ssl session id is different" error. This
5164 behaviour is masked when SSL_OP_ALL is used due to
5165 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
5166 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
5167 followup to PR #377.
5170 *) IA-32 assembler support enhancements: unified ELF targets, support
5171 for SCO/Caldera platforms, fix for Cygwin shared build.
5174 *) Add support for FreeBSD on sparc64. As a consequence, support for
5175 FreeBSD on non-x86 processors is separate from x86 processors on
5176 the config script, much like the NetBSD support.
5177 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
5179 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
5181 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
5184 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
5185 code (06) was taken as the first octet of the session ID and the last
5186 octet was ignored consequently. As a result SSLv2 client side session
5187 caching could not have worked due to the session ID mismatch between
5189 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
5193 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
5194 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
5198 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
5199 seems that in spite of existing for more than a year, many application
5200 author have done nothing to provide the necessary callbacks, which
5201 means that this particular engine will not work properly anywhere.
5202 This is a very unfortunate situation which forces us, in the name
5203 of usability, to give the hw_ncipher.c a static lock, which is part
5205 NOTE: This is for the 0.9.7 series ONLY. This hack will never
5206 appear in 0.9.8 or later. We EXPECT application authors to have
5207 dealt properly with this when 0.9.8 is released (unless we actually
5208 make such changes in the libcrypto locking code that changes will
5209 have to be made anyway).
5212 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
5213 octets have been read, EOF or an error occurs. Without this change
5214 some truncated ASN1 structures will not produce an error.
5217 *) Disable Heimdal support, since it hasn't been fully implemented.
5218 Still give the possibility to force the use of Heimdal, but with
5219 warnings and a request that patches get sent to openssl-dev.
5222 *) Add the VC-CE target, introduce the WINCE sysname, and add
5223 INSTALL.WCE and appropriate conditionals to make it build.
5224 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
5226 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
5227 cygssl-x.y.z.dll, where x, y and z are the major, minor and
5228 edit numbers of the version.
5229 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
5231 *) Introduce safe string copy and catenation functions
5232 (BUF_strlcpy() and BUF_strlcat()).
5233 [Ben Laurie (CHATS) and Richard Levitte]
5235 *) Avoid using fixed-size buffers for one-line DNs.
5236 [Ben Laurie (CHATS)]
5238 *) Add BUF_MEM_grow_clean() to avoid information leakage when
5239 resizing buffers containing secrets, and use where appropriate.
5240 [Ben Laurie (CHATS)]
5242 *) Avoid using fixed size buffers for configuration file location.
5243 [Ben Laurie (CHATS)]
5245 *) Avoid filename truncation for various CA files.
5246 [Ben Laurie (CHATS)]
5248 *) Use sizeof in preference to magic numbers.
5249 [Ben Laurie (CHATS)]
5251 *) Avoid filename truncation in cert requests.
5252 [Ben Laurie (CHATS)]
5254 *) Add assertions to check for (supposedly impossible) buffer
5256 [Ben Laurie (CHATS)]
5258 *) Don't cache truncated DNS entries in the local cache (this could
5259 potentially lead to a spoofing attack).
5260 [Ben Laurie (CHATS)]
5262 *) Fix various buffers to be large enough for hex/decimal
5263 representations in a platform independent manner.
5264 [Ben Laurie (CHATS)]
5266 *) Add CRYPTO_realloc_clean() to avoid information leakage when
5267 resizing buffers containing secrets, and use where appropriate.
5268 [Ben Laurie (CHATS)]
5270 *) Add BIO_indent() to avoid much slightly worrying code to do
5272 [Ben Laurie (CHATS)]
5274 *) Convert sprintf()/BIO_puts() to BIO_printf().
5275 [Ben Laurie (CHATS)]
5277 *) buffer_gets() could terminate with the buffer only half
5279 [Ben Laurie (CHATS)]
5281 *) Add assertions to prevent user-supplied crypto functions from
5282 overflowing internal buffers by having large block sizes, etc.
5283 [Ben Laurie (CHATS)]
5285 *) New OPENSSL_assert() macro (similar to assert(), but enabled
5287 [Ben Laurie (CHATS)]
5289 *) Eliminate unused copy of key in RC4.
5290 [Ben Laurie (CHATS)]
5292 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
5293 [Ben Laurie (CHATS)]
5295 *) Fix off-by-one error in EGD path.
5296 [Ben Laurie (CHATS)]
5298 *) If RANDFILE path is too long, ignore instead of truncating.
5299 [Ben Laurie (CHATS)]
5301 *) Eliminate unused and incorrectly sized X.509 structure
5303 [Ben Laurie (CHATS)]
5305 *) Eliminate unused and dangerous function knumber().
5306 [Ben Laurie (CHATS)]
5308 *) Eliminate unused and dangerous structure, KSSL_ERR.
5309 [Ben Laurie (CHATS)]
5311 *) Protect against overlong session ID context length in an encoded
5312 session object. Since these are local, this does not appear to be
5314 [Ben Laurie (CHATS)]
5316 *) Change from security patch (see 0.9.6e below) that did not affect
5317 the 0.9.6 release series:
5319 Remote buffer overflow in SSL3 protocol - an attacker could
5320 supply an oversized master key in Kerberos-enabled versions.
5322 [Ben Laurie (CHATS)]
5324 *) Change the SSL kerb5 codes to match RFC 2712.
5327 *) Make -nameopt work fully for req and add -reqopt switch.
5328 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
5330 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
5331 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
5333 *) Make sure tests can be performed even if the corresponding algorithms
5334 have been removed entirely. This was also the last step to make
5335 OpenSSL compilable with DJGPP under all reasonable conditions.
5336 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
5338 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
5339 to allow version independent disabling of normally unselected ciphers,
5340 which may be activated as a side-effect of selecting a single cipher.
5342 (E.g., cipher list string "RSA" enables ciphersuites that are left
5343 out of "ALL" because they do not provide symmetric encryption.
5344 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
5345 [Lutz Jaenicke, Bodo Moeller]
5347 *) Add appropriate support for separate platform-dependent build
5348 directories. The recommended way to make a platform-dependent
5349 build directory is the following (tested on Linux), maybe with
5352 # Place yourself outside of the OpenSSL source tree. In
5353 # this example, the environment variable OPENSSL_SOURCE
5354 # is assumed to contain the absolute OpenSSL source directory.
5355 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
5356 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
5357 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
5358 mkdir -p `dirname $F`
5359 ln -s $OPENSSL_SOURCE/$F $F
5362 To be absolutely sure not to disturb the source tree, a "make clean"
5363 is a good thing. If it isn't successful, don't worry about it,
5364 it probably means the source directory is very clean.
5367 *) Make sure any ENGINE control commands make local copies of string
5368 pointers passed to them whenever necessary. Otherwise it is possible
5369 the caller may have overwritten (or deallocated) the original string
5370 data when a later ENGINE operation tries to use the stored values.
5371 [Götz Babin-Ebell <babinebell@trustcenter.de>]
5373 *) Improve diagnostics in file reading and command-line digests.
5374 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
5376 *) Add AES modes CFB and OFB to the object database. Correct an
5377 error in AES-CFB decryption.
5380 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
5381 allows existing EVP_CIPHER_CTX structures to be reused after
5382 calling EVP_*Final(). This behaviour is used by encryption
5383 BIOs and some applications. This has the side effect that
5384 applications must explicitly clean up cipher contexts with
5385 EVP_CIPHER_CTX_cleanup() or they will leak memory.
5388 *) Check the values of dna and dnb in bn_mul_recursive before calling
5389 bn_mul_comba (a non zero value means the a or b arrays do not contain
5390 n2 elements) and fallback to bn_mul_normal if either is not zero.
5393 *) Fix escaping of non-ASCII characters when using the -subj option
5394 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
5397 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
5398 form for "surname", serialNumber has no short form.
5399 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
5400 therefore remove "mail" short name for "internet 7".
5401 The OID for unique identifiers in X509 certificates is
5402 x500UniqueIdentifier, not uniqueIdentifier.
5403 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
5406 *) Add an "init" command to the ENGINE config module and auto initialize
5407 ENGINEs. Without any "init" command the ENGINE will be initialized
5408 after all ctrl commands have been executed on it. If init=1 the
5409 ENGINE is initailized at that point (ctrls before that point are run
5410 on the uninitialized ENGINE and after on the initialized one). If
5411 init=0 then the ENGINE will not be iniatialized at all.
5414 *) Fix the 'app_verify_callback' interface so that the user-defined
5415 argument is actually passed to the callback: In the
5416 SSL_CTX_set_cert_verify_callback() prototype, the callback
5417 declaration has been changed from
5420 int (*cb)(X509_STORE_CTX *,void *);
5421 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
5422 i=s->ctx->app_verify_callback(&ctx)
5423 has been changed into
5424 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
5426 To update applications using SSL_CTX_set_cert_verify_callback(),
5427 a dummy argument can be added to their callback functions.
5428 [D. K. Smetters <smetters@parc.xerox.com>]
5430 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
5431 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
5433 *) Add and OPENSSL_LOAD_CONF define which will cause
5434 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
5435 This allows older applications to transparently support certain
5436 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
5437 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
5438 load the config file and OPENSSL_add_all_algorithms_conf() which will
5439 always load it have also been added.
5442 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
5443 Adjust NIDs and EVP layer.
5444 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
5446 *) Config modules support in openssl utility.
5448 Most commands now load modules from the config file,
5449 though in a few (such as version) this isn't done
5450 because it couldn't be used for anything.
5452 In the case of ca and req the config file used is
5453 the same as the utility itself: that is the -config
5454 command line option can be used to specify an
5458 *) Move default behaviour from OPENSSL_config(). If appname is NULL
5459 use "openssl_conf" if filename is NULL use default openssl config file.
5462 *) Add an argument to OPENSSL_config() to allow the use of an alternative
5463 config section name. Add a new flag to tolerate a missing config file
5464 and move code to CONF_modules_load_file().
5467 *) Support for crypto accelerator cards from Accelerated Encryption
5468 Processing, www.aep.ie. (Use engine 'aep')
5469 The support was copied from 0.9.6c [engine] and adapted/corrected
5470 to work with the new engine framework.
5471 [AEP Inc. and Richard Levitte]
5473 *) Support for SureWare crypto accelerator cards from Baltimore
5474 Technologies. (Use engine 'sureware')
5475 The support was copied from 0.9.6c [engine] and adapted
5476 to work with the new engine framework.
5479 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
5480 make the newer ENGINE framework commands for the CHIL engine work.
5481 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
5483 *) Make it possible to produce shared libraries on ReliantUNIX.
5484 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
5486 *) Add the configuration target debug-linux-ppro.
5487 Make 'openssl rsa' use the general key loading routines
5488 implemented in apps.c, and make those routines able to
5489 handle the key format FORMAT_NETSCAPE and the variant
5491 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
5493 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
5494 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
5496 *) Add -keyform to rsautl, and document -engine.
5497 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
5499 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
5500 BIO_R_NO_SUCH_FILE error code rather than the generic
5501 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
5504 *) Add new functions
5506 ERR_peek_last_error_line
5507 ERR_peek_last_error_line_data.
5508 These are similar to
5511 ERR_peek_error_line_data,
5512 but report on the latest error recorded rather than the first one
5513 still in the error queue.
5514 [Ben Laurie, Bodo Moeller]
5516 *) default_algorithms option in ENGINE config module. This allows things
5518 default_algorithms = ALL
5519 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
5522 *) Preliminary ENGINE config module.
5525 *) New experimental application configuration code.
5528 *) Change the AES code to follow the same name structure as all other
5529 symmetric ciphers, and behave the same way. Move everything to
5530 the directory crypto/aes, thereby obsoleting crypto/rijndael.
5531 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
5533 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
5534 [Ben Laurie and Theo de Raadt]
5536 *) Add option to output public keys in req command.
5537 [Massimiliano Pala madwolf@openca.org]
5539 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
5540 (up to about 10% better than before for P-192 and P-224).
5543 *) New functions/macros
5545 SSL_CTX_set_msg_callback(ctx, cb)
5546 SSL_CTX_set_msg_callback_arg(ctx, arg)
5547 SSL_set_msg_callback(ssl, cb)
5548 SSL_set_msg_callback_arg(ssl, arg)
5550 to request calling a callback function
5552 void cb(int write_p, int version, int content_type,
5553 const void *buf, size_t len, SSL *ssl, void *arg)
5555 whenever a protocol message has been completely received
5556 (write_p == 0) or sent (write_p == 1). Here 'version' is the
5557 protocol version according to which the SSL library interprets
5558 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
5559 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
5560 the content type as defined in the SSL 3.0/TLS 1.0 protocol
5561 specification (change_cipher_spec(20), alert(21), handshake(22)).
5562 'buf' and 'len' point to the actual message, 'ssl' to the
5563 SSL object, and 'arg' is the application-defined value set by
5564 SSL[_CTX]_set_msg_callback_arg().
5566 'openssl s_client' and 'openssl s_server' have new '-msg' options
5567 to enable a callback that displays all protocol messages.
5570 *) Change the shared library support so shared libraries are built as
5571 soon as the corresponding static library is finished, and thereby get
5572 openssl and the test programs linked against the shared library.
5573 This still only happens when the keyword "shard" has been given to
5574 the configuration scripts.
5576 NOTE: shared library support is still an experimental thing, and
5577 backward binary compatibility is still not guaranteed.
5578 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
5580 *) Add support for Subject Information Access extension.
5581 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
5583 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
5584 additional bytes when new memory had to be allocated, not just
5585 when reusing an existing buffer.
5588 *) New command line and configuration option 'utf8' for the req command.
5589 This allows field values to be specified as UTF8 strings.
5592 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
5593 runs for the former and machine-readable output for the latter.
5596 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
5597 of the e-mail address in the DN (i.e., it will go into a certificate
5598 extension only). The new configuration file option 'email_in_dn = no'
5599 has the same effect.
5600 [Massimiliano Pala madwolf@openca.org]
5602 *) Change all functions with names starting with des_ to be starting
5603 with DES_ instead. Add wrappers that are compatible with libdes,
5604 but are named _ossl_old_des_*. Finally, add macros that map the
5605 des_* symbols to the corresponding _ossl_old_des_* if libdes
5606 compatibility is desired. If OpenSSL 0.9.6c compatibility is
5607 desired, the des_* symbols will be mapped to DES_*, with one
5610 Since we provide two compatibility mappings, the user needs to
5611 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
5612 compatibility is desired. The default (i.e., when that macro
5613 isn't defined) is OpenSSL 0.9.6c compatibility.
5615 There are also macros that enable and disable the support of old
5616 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
5617 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
5618 are defined, the default will apply: to support the old des routines.
5620 In either case, one must include openssl/des.h to get the correct
5621 definitions. Do not try to just include openssl/des_old.h, that
5624 NOTE: This is a major break of an old API into a new one. Software
5625 authors are encouraged to switch to the DES_ style functions. Some
5626 time in the future, des_old.h and the libdes compatibility functions
5627 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
5628 default), and then completely removed.
5631 *) Test for certificates which contain unsupported critical extensions.
5632 If such a certificate is found during a verify operation it is
5633 rejected by default: this behaviour can be overridden by either
5634 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
5635 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
5636 X509_supported_extension() has also been added which returns 1 if a
5637 particular extension is supported.
5640 *) Modify the behaviour of EVP cipher functions in similar way to digests
5641 to retain compatibility with existing code.
5644 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
5645 compatibility with existing code. In particular the 'ctx' parameter does
5646 not have to be to be initialized before the call to EVP_DigestInit() and
5647 it is tidied up after a call to EVP_DigestFinal(). New function
5648 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
5649 EVP_MD_CTX_copy() changed to not require the destination to be
5650 initialized valid and new function EVP_MD_CTX_copy_ex() added which
5651 requires the destination to be valid.
5653 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
5654 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
5657 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
5658 so that complete 'Handshake' protocol structures are kept in memory
5659 instead of overwriting 'msg_type' and 'length' with 'body' data.
5662 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
5663 [Massimo Santin via Richard Levitte]
5665 *) Major restructuring to the underlying ENGINE code. This includes
5666 reduction of linker bloat, separation of pure "ENGINE" manipulation
5667 (initialisation, etc) from functionality dealing with implementations
5668 of specific crypto iterfaces. This change also introduces integrated
5669 support for symmetric ciphers and digest implementations - so ENGINEs
5670 can now accelerate these by providing EVP_CIPHER and EVP_MD
5671 implementations of their own. This is detailed in crypto/engine/README
5672 as it couldn't be adequately described here. However, there are a few
5673 API changes worth noting - some RSA, DSA, DH, and RAND functions that
5674 were changed in the original introduction of ENGINE code have now
5675 reverted back - the hooking from this code to ENGINE is now a good
5676 deal more passive and at run-time, operations deal directly with
5677 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
5678 dereferencing through an ENGINE pointer any more. Also, the ENGINE
5679 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
5680 they were not being used by the framework as there is no concept of a
5681 BIGNUM_METHOD and they could not be generalised to the new
5682 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
5683 ENGINE_cpy() has been removed as it cannot be consistently defined in
5687 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
5690 *) Change mkdef.pl to sort symbols that get the same entry number,
5691 and make sure the automatically generated functions ERR_load_*
5692 become part of libeay.num as well.
5695 *) New function SSL_renegotiate_pending(). This returns true once
5696 renegotiation has been requested (either SSL_renegotiate() call
5697 or HelloRequest/ClientHello received from the peer) and becomes
5698 false once a handshake has been completed.
5699 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
5700 sends a HelloRequest, but does not ensure that a handshake takes
5701 place. SSL_renegotiate_pending() is useful for checking if the
5702 client has followed the request.)
5705 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
5706 By default, clients may request session resumption even during
5707 renegotiation (if session ID contexts permit); with this option,
5708 session resumption is possible only in the first handshake.
5710 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
5711 more bits available for options that should not be part of
5712 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
5715 *) Add some demos for certificate and certificate request creation.
5718 *) Make maximum certificate chain size accepted from the peer application
5719 settable (SSL*_get/set_max_cert_list()), as proposed by
5720 "Douglas E. Engert" <deengert@anl.gov>.
5723 *) Add support for shared libraries for Unixware-7
5724 (Boyd Lynn Gerber <gerberb@zenez.com>).
5727 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
5728 be done prior to destruction. Use this to unload error strings from
5729 ENGINEs that load their own error strings. NB: This adds two new API
5730 functions to "get" and "set" this destroy handler in an ENGINE.
5733 *) Alter all existing ENGINE implementations (except "openssl" and
5734 "openbsd") to dynamically instantiate their own error strings. This
5735 makes them more flexible to be built both as statically-linked ENGINEs
5736 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
5737 Also, add stub code to each that makes building them as self-contained
5738 shared-libraries easier (see README.ENGINE).
5741 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
5742 implementations into applications that are completely implemented in
5743 self-contained shared-libraries. The "dynamic" ENGINE exposes control
5744 commands that can be used to configure what shared-library to load and
5745 to control aspects of the way it is handled. Also, made an update to
5746 the README.ENGINE file that brings its information up-to-date and
5747 provides some information and instructions on the "dynamic" ENGINE
5748 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
5751 *) Make it possible to unload ranges of ERR strings with a new
5752 "ERR_unload_strings" function.
5755 *) Add a copy() function to EVP_MD.
5758 *) Make EVP_MD routines take a context pointer instead of just the
5759 md_data void pointer.
5762 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
5763 that the digest can only process a single chunk of data
5764 (typically because it is provided by a piece of
5765 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
5766 is only going to provide a single chunk of data, and hence the
5767 framework needn't accumulate the data for oneshot drivers.
5770 *) As with "ERR", make it possible to replace the underlying "ex_data"
5771 functions. This change also alters the storage and management of global
5772 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
5773 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
5774 index counters. The API functions that use this state have been changed
5775 to take a "class_index" rather than pointers to the class's local STACK
5776 and counter, and there is now an API function to dynamically create new
5777 classes. This centralisation allows us to (a) plug a lot of the
5778 thread-safety problems that existed, and (b) makes it possible to clean
5779 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
5780 such data would previously have always leaked in application code and
5781 workarounds were in place to make the memory debugging turn a blind eye
5782 to it. Application code that doesn't use this new function will still
5783 leak as before, but their memory debugging output will announce it now
5784 rather than letting it slide.
5786 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
5787 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
5788 has a return value to indicate success or failure.
5791 *) Make it possible to replace the underlying "ERR" functions such that the
5792 global state (2 LHASH tables and 2 locks) is only used by the "default"
5793 implementation. This change also adds two functions to "get" and "set"
5794 the implementation prior to it being automatically set the first time
5795 any other ERR function takes place. Ie. an application can call "get",
5796 pass the return value to a module it has just loaded, and that module
5797 can call its own "set" function using that value. This means the
5798 module's "ERR" operations will use (and modify) the error state in the
5799 application and not in its own statically linked copy of OpenSSL code.
5802 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
5803 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
5804 the operation, and provides a more encapsulated way for external code
5805 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
5806 to use these functions rather than manually incrementing the counts.
5808 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
5811 *) Add EVP test program.
5814 *) Add symmetric cipher support to ENGINE. Expect the API to change!
5817 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
5818 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
5819 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
5820 These allow a CRL to be built without having to access X509_CRL fields
5821 directly. Modify 'ca' application to use new functions.
5824 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
5825 bug workarounds. Rollback attack detection is a security feature.
5826 The problem will only arise on OpenSSL servers when TLSv1 is not
5827 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
5828 Software authors not wanting to support TLSv1 will have special reasons
5829 for their choice and can explicitly enable this option.
5830 [Bodo Moeller, Lutz Jaenicke]
5832 *) Rationalise EVP so it can be extended: don't include a union of
5833 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
5834 (similar to those existing for EVP_CIPHER_CTX).
5839 EVP_MD_CTX_init(&md); /* new function call */
5840 EVP_DigestInit(&md, EVP_sha1());
5841 EVP_DigestUpdate(&md, in, len);
5842 EVP_DigestFinal(&md, out, NULL);
5843 EVP_MD_CTX_cleanup(&md); /* new function call */
5847 *) Make DES key schedule conform to the usual scheme, as well as
5848 correcting its structure. This means that calls to DES functions
5849 now have to pass a pointer to a des_key_schedule instead of a
5850 plain des_key_schedule (which was actually always a pointer
5853 des_key_schedule ks;
5855 des_set_key_checked(..., &ks);
5856 des_ncbc_encrypt(..., &ks, ...);
5858 (Note that a later change renames 'des_...' into 'DES_...'.)
5861 *) Initial reduction of linker bloat: the use of some functions, such as
5862 PEM causes large amounts of unused functions to be linked in due to
5863 poor organisation. For example pem_all.c contains every PEM function
5864 which has a knock on effect of linking in large amounts of (unused)
5865 ASN1 code. Grouping together similar functions and splitting unrelated
5866 functions prevents this.
5869 *) Cleanup of EVP macros.
5872 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
5873 correct _ecb suffix.
5876 *) Add initial OCSP responder support to ocsp application. The
5877 revocation information is handled using the text based index
5878 use by the ca application. The responder can either handle
5879 requests generated internally, supplied in files (for example
5880 via a CGI script) or using an internal minimal server.
5883 *) Add configuration choices to get zlib compression for TLS.
5886 *) Changes to Kerberos SSL for RFC 2712 compliance:
5887 1. Implemented real KerberosWrapper, instead of just using
5888 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
5889 2. Implemented optional authenticator field of KerberosWrapper.
5891 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
5892 and authenticator structs; see crypto/krb5/.
5894 Generalized Kerberos calls to support multiple Kerberos libraries.
5895 [Vern Staats <staatsvr@asc.hpc.mil>,
5896 Jeffrey Altman <jaltman@columbia.edu>
5897 via Richard Levitte]
5899 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
5900 already does with RSA. testdsa.h now has 'priv_key/pub_key'
5901 values for each of the key sizes rather than having just
5902 parameters (and 'speed' generating keys each time).
5905 *) Speed up EVP routines.
5908 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
5909 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
5910 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
5911 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
5913 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
5914 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
5915 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
5918 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
5920 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
5923 *) Added the OS2-EMX target.
5924 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
5926 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
5927 to support NCONF routines in extension code. New function CONF_set_nconf()
5928 to allow functions which take an NCONF to also handle the old LHASH
5929 structure: this means that the old CONF compatible routines can be
5930 retained (in particular wrt extensions) without having to duplicate the
5931 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
5934 *) Enhance the general user interface with mechanisms for inner control
5935 and with possibilities to have yes/no kind of prompts.
5938 *) Change all calls to low level digest routines in the library and
5939 applications to use EVP. Add missing calls to HMAC_cleanup() and
5940 don't assume HMAC_CTX can be copied using memcpy().
5941 [Verdon Walker <VWalker@novell.com>, Steve Henson]
5943 *) Add the possibility to control engines through control names but with
5944 arbitrary arguments instead of just a string.
5945 Change the key loaders to take a UI_METHOD instead of a callback
5946 function pointer. NOTE: this breaks binary compatibility with earlier
5947 versions of OpenSSL [engine].
5948 Adapt the nCipher code for these new conditions and add a card insertion
5952 *) Enhance the general user interface with mechanisms to better support
5953 dialog box interfaces, application-defined prompts, the possibility
5954 to use defaults (for example default passwords from somewhere else)
5955 and interrupts/cancellations.
5958 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
5959 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
5962 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
5963 tidy up some unnecessarily weird code in 'sk_new()').
5964 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
5966 *) Change the key loading routines for ENGINEs to use the same kind
5967 callback (pem_password_cb) as all other routines that need this
5971 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
5972 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
5973 than this minimum value is recommended.
5976 *) New random seeder for OpenVMS, using the system process statistics
5977 that are easily reachable.
5980 *) Windows apparently can't transparently handle global
5981 variables defined in DLLs. Initialisations such as:
5983 const ASN1_ITEM *it = &ASN1_INTEGER_it;
5985 wont compile. This is used by the any applications that need to
5986 declare their own ASN1 modules. This was fixed by adding the option
5987 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
5988 needed for static libraries under Win32.
5991 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
5992 setting of purpose and trust fields. New X509_STORE trust and
5993 purpose functions and tidy up setting in other SSL functions.
5996 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
5997 structure. These are inherited by X509_STORE_CTX when it is
5998 initialised. This allows various defaults to be set in the
5999 X509_STORE structure (such as flags for CRL checking and custom
6000 purpose or trust settings) for functions which only use X509_STORE_CTX
6001 internally such as S/MIME.
6003 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
6004 trust settings if they are not set in X509_STORE. This allows X509_STORE
6005 purposes and trust (in S/MIME for example) to override any set by default.
6007 Add command line options for CRL checking to smime, s_client and s_server
6011 *) Initial CRL based revocation checking. If the CRL checking flag(s)
6012 are set then the CRL is looked up in the X509_STORE structure and
6013 its validity and signature checked, then if the certificate is found
6014 in the CRL the verify fails with a revoked error.
6016 Various new CRL related callbacks added to X509_STORE_CTX structure.
6018 Command line options added to 'verify' application to support this.
6020 This needs some additional work, such as being able to handle multiple
6021 CRLs with different times, extension based lookup (rather than just
6022 by subject name) and ultimately more complete V2 CRL extension
6026 *) Add a general user interface API (crypto/ui/). This is designed
6027 to replace things like des_read_password and friends (backward
6028 compatibility functions using this new API are provided).
6029 The purpose is to remove prompting functions from the DES code
6030 section as well as provide for prompting through dialog boxes in
6031 a window system and the like.
6034 *) Add "ex_data" support to ENGINE so implementations can add state at a
6035 per-structure level rather than having to store it globally.
6038 *) Make it possible for ENGINE structures to be copied when retrieved by
6039 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
6040 This causes the "original" ENGINE structure to act like a template,
6041 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
6042 operational state can be localised to each ENGINE structure, despite the
6043 fact they all share the same "methods". New ENGINE structures returned in
6044 this case have no functional references and the return value is the single
6045 structural reference. This matches the single structural reference returned
6046 by ENGINE_by_id() normally, when it is incremented on the pre-existing
6050 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
6051 needs to match any other type at all we need to manually clear the
6055 *) Changes to the "openssl engine" utility to include;
6056 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
6057 about an ENGINE's available control commands.
6058 - executing control commands from command line arguments using the
6059 '-pre' and '-post' switches. '-post' is only used if '-t' is
6060 specified and the ENGINE is successfully initialised. The syntax for
6061 the individual commands are colon-separated, for example;
6062 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
6065 *) New dynamic control command support for ENGINEs. ENGINEs can now
6066 declare their own commands (numbers), names (strings), descriptions,
6067 and input types for run-time discovery by calling applications. A
6068 subset of these commands are implicitly classed as "executable"
6069 depending on their input type, and only these can be invoked through
6070 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
6071 can be based on user input, config files, etc). The distinction is
6072 that "executable" commands cannot return anything other than a boolean
6073 result and can only support numeric or string input, whereas some
6074 discoverable commands may only be for direct use through
6075 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
6076 pointers, or other custom uses. The "executable" commands are to
6077 support parameterisations of ENGINE behaviour that can be
6078 unambiguously defined by ENGINEs and used consistently across any
6079 OpenSSL-based application. Commands have been added to all the
6080 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
6081 control over shared-library paths without source code alterations.
6084 *) Changed all ENGINE implementations to dynamically allocate their
6085 ENGINEs rather than declaring them statically. Apart from this being
6086 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
6087 this also allows the implementations to compile without using the
6088 internal engine_int.h header.
6091 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
6092 'const' value. Any code that should be able to modify a RAND_METHOD
6093 should already have non-const pointers to it (ie. they should only
6094 modify their own ones).
6097 *) Made a variety of little tweaks to the ENGINE code.
6098 - "atalla" and "ubsec" string definitions were moved from header files
6099 to C code. "nuron" string definitions were placed in variables
6100 rather than hard-coded - allowing parameterisation of these values
6101 later on via ctrl() commands.
6102 - Removed unused "#if 0"'d code.
6103 - Fixed engine list iteration code so it uses ENGINE_free() to release
6104 structural references.
6105 - Constified the RAND_METHOD element of ENGINE structures.
6106 - Constified various get/set functions as appropriate and added
6107 missing functions (including a catch-all ENGINE_cpy that duplicates
6108 all ENGINE values onto a new ENGINE except reference counts/state).
6109 - Removed NULL parameter checks in get/set functions. Setting a method
6110 or function to NULL is a way of cancelling out a previously set
6111 value. Passing a NULL ENGINE parameter is just plain stupid anyway
6112 and doesn't justify the extra error symbols and code.
6113 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
6114 flags from engine_int.h to engine.h.
6115 - Changed prototypes for ENGINE handler functions (init(), finish(),
6116 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
6119 *) Implement binary inversion algorithm for BN_mod_inverse in addition
6120 to the algorithm using long division. The binary algorithm can be
6121 used only if the modulus is odd. On 32-bit systems, it is faster
6122 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
6123 roughly 5-15% for 256-bit moduli), so we use it only for moduli
6124 up to 450 bits. In 64-bit environments, the binary algorithm
6125 appears to be advantageous for much longer moduli; here we use it
6126 for moduli up to 2048 bits.
6129 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
6130 could not support the combine flag in choice fields.
6133 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
6134 extensions from a certificate request to the certificate.
6137 *) Allow multiple 'certopt' and 'nameopt' options to be separated
6138 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
6139 file: this allows the display of the certificate about to be
6140 signed to be customised, to allow certain fields to be included
6141 or excluded and extension details. The old system didn't display
6142 multicharacter strings properly, omitted fields not in the policy
6143 and couldn't display additional details such as extensions.
6146 *) Function EC_POINTs_mul for multiple scalar multiplication
6147 of an arbitrary number of elliptic curve points
6148 \sum scalars[i]*points[i],
6149 optionally including the generator defined for the EC_GROUP:
6150 scalar*generator + \sum scalars[i]*points[i].
6152 EC_POINT_mul is a simple wrapper function for the typical case
6153 that the point list has just one item (besides the optional
6157 *) First EC_METHODs for curves over GF(p):
6159 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
6160 operations and provides various method functions that can also
6161 operate with faster implementations of modular arithmetic.
6163 EC_GFp_mont_method() reuses most functions that are part of
6164 EC_GFp_simple_method, but uses Montgomery arithmetic.
6166 [Bodo Moeller; point addition and point doubling
6167 implementation directly derived from source code provided by
6168 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
6170 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
6171 crypto/ec/ec_lib.c):
6173 Curves are EC_GROUP objects (with an optional group generator)
6174 based on EC_METHODs that are built into the library.
6176 Points are EC_POINT objects based on EC_GROUP objects.
6178 Most of the framework would be able to handle curves over arbitrary
6179 finite fields, but as there are no obvious types for fields other
6180 than GF(p), some functions are limited to that for now.
6183 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
6184 that the file contains a complete HTTP response.
6187 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
6188 change the def and num file printf format specifier from "%-40sXXX"
6189 to "%-39s XXX". The latter will always guarantee a space after the
6190 field while the former will cause them to run together if the field
6191 is 40 of more characters long.
6194 *) Constify the cipher and digest 'method' functions and structures
6195 and modify related functions to take constant EVP_MD and EVP_CIPHER
6199 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
6200 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
6203 *) Modify EVP_Digest*() routines so they now return values. Although the
6204 internal software routines can never fail additional hardware versions
6208 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
6210 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
6211 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
6214 ERR_R_NESTED_ASN1_ERROR
6216 ERR_R_MISSING_ASN1_EOS
6217 were 4 .. 9, conflicting with
6218 ERR_LIB_RSA (= ERR_R_RSA_LIB)
6220 ERR_LIB_PEM (= ERR_R_PEM_LIB).
6221 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
6223 Add new error code 'ERR_R_INTERNAL_ERROR'.
6226 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
6230 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
6231 sets the subject name for a new request or supersedes the
6232 subject name in a given request. Formats that can be parsed are
6233 'CN=Some Name, OU=myOU, C=IT'
6235 'CN=Some Name/OU=myOU/C=IT'.
6237 Add options '-batch' and '-verbose' to 'openssl req'.
6238 [Massimiliano Pala <madwolf@hackmasters.net>]
6240 *) Introduce the possibility to access global variables through
6241 functions on platform were that's the best way to handle exporting
6242 global variables in shared libraries. To enable this functionality,
6243 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
6244 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
6245 is normally done by Configure or something similar).
6247 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
6248 in the source file (foo.c) like this:
6250 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
6251 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
6253 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
6254 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
6256 OPENSSL_DECLARE_GLOBAL(int,foo);
6257 #define foo OPENSSL_GLOBAL_REF(foo)
6258 OPENSSL_DECLARE_GLOBAL(double,bar);
6259 #define bar OPENSSL_GLOBAL_REF(bar)
6261 The #defines are very important, and therefore so is including the
6262 header file everywhere where the defined globals are used.
6264 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
6265 of ASN.1 items, but that structure is a bit different.
6267 The largest change is in util/mkdef.pl which has been enhanced with
6268 better and easier to understand logic to choose which symbols should
6269 go into the Windows .def files as well as a number of fixes and code
6270 cleanup (among others, algorithm keywords are now sorted
6271 lexicographically to avoid constant rewrites).
6274 *) In BN_div() keep a copy of the sign of 'num' before writing the
6275 result to 'rm' because if rm==num the value will be overwritten
6276 and produce the wrong result if 'num' is negative: this caused
6277 problems with BN_mod() and BN_nnmod().
6280 *) Function OCSP_request_verify(). This checks the signature on an
6281 OCSP request and verifies the signer certificate. The signer
6282 certificate is just checked for a generic purpose and OCSP request
6286 *) Add OCSP_check_validity() function to check the validity of OCSP
6287 responses. OCSP responses are prepared in real time and may only
6288 be a few seconds old. Simply checking that the current time lies
6289 between thisUpdate and nextUpdate max reject otherwise valid responses
6290 caused by either OCSP responder or client clock inaccuracy. Instead
6291 we allow thisUpdate and nextUpdate to fall within a certain period of
6292 the current time. The age of the response can also optionally be
6293 checked. Two new options -validity_period and -status_age added to
6297 *) If signature or public key algorithm is unrecognized print out its
6298 OID rather that just UNKNOWN.
6301 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
6302 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
6303 ID to be generated from the issuer certificate alone which can then be
6304 passed to OCSP_id_issuer_cmp().
6307 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
6308 ASN1 modules to export functions returning ASN1_ITEM pointers
6309 instead of the ASN1_ITEM structures themselves. This adds several
6310 new macros which allow the underlying ASN1 function/structure to
6311 be accessed transparently. As a result code should not use ASN1_ITEM
6312 references directly (such as &X509_it) but instead use the relevant
6313 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
6314 use of the new ASN1 code on platforms where exporting structures
6315 is problematical (for example in shared libraries) but exporting
6316 functions returning pointers to structures is not.
6319 *) Add support for overriding the generation of SSL/TLS session IDs.
6320 These callbacks can be registered either in an SSL_CTX or per SSL.
6321 The purpose of this is to allow applications to control, if they wish,
6322 the arbitrary values chosen for use as session IDs, particularly as it
6323 can be useful for session caching in multiple-server environments. A
6324 command-line switch for testing this (and any client code that wishes
6325 to use such a feature) has been added to "s_server".
6326 [Geoff Thorpe, Lutz Jaenicke]
6328 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
6329 of the form '#if defined(...) || defined(...) || ...' and
6330 '#if !defined(...) && !defined(...) && ...'. This also avoids
6331 the growing number of special cases it was previously handling.
6334 *) Make all configuration macros available for application by making
6335 sure they are available in opensslconf.h, by giving them names starting
6336 with "OPENSSL_" to avoid conflicts with other packages and by making
6337 sure e_os2.h will cover all platform-specific cases together with
6339 Additionally, it is now possible to define configuration/platform-
6340 specific names (called "system identities"). In the C code, these
6341 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
6342 macro with the name beginning with "OPENSSL_SYS_", which is determined
6343 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
6347 *) New option -set_serial to 'req' and 'x509' this allows the serial
6348 number to use to be specified on the command line. Previously self
6349 signed certificates were hard coded with serial number 0 and the
6350 CA options of 'x509' had to use a serial number in a file which was
6354 *) New options to 'ca' utility to support V2 CRL entry extensions.
6355 Currently CRL reason, invalidity date and hold instruction are
6356 supported. Add new CRL extensions to V3 code and some new objects.
6359 *) New function EVP_CIPHER_CTX_set_padding() this is used to
6360 disable standard block padding (aka PKCS#5 padding) in the EVP
6361 API, which was previously mandatory. This means that the data is
6362 not padded in any way and so the total length much be a multiple
6363 of the block size, otherwise an error occurs.
6366 *) Initial (incomplete) OCSP SSL support.
6369 *) New function OCSP_parse_url(). This splits up a URL into its host,
6370 port and path components: primarily to parse OCSP URLs. New -url
6371 option to ocsp utility.
6374 *) New nonce behavior. The return value of OCSP_check_nonce() now
6375 reflects the various checks performed. Applications can decide
6376 whether to tolerate certain situations such as an absent nonce
6377 in a response when one was present in a request: the ocsp application
6378 just prints out a warning. New function OCSP_add1_basic_nonce()
6379 this is to allow responders to include a nonce in a response even if
6380 the request is nonce-less.
6383 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
6384 skipped when using openssl x509 multiple times on a single input file,
6385 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
6388 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
6389 set string type: to handle setting ASN1_TIME structures. Fix ca
6390 utility to correctly initialize revocation date of CRLs.
6393 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
6394 the clients preferred ciphersuites and rather use its own preferences.
6395 Should help to work around M$ SGC (Server Gated Cryptography) bug in
6396 Internet Explorer by ensuring unchanged hash method during stepup.
6397 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
6400 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
6401 to aes and add a new 'exist' option to print out symbols that don't
6405 *) Additional options to ocsp utility to allow flags to be set and
6406 additional certificates supplied.
6409 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
6410 OCSP client a number of certificate to only verify the response
6414 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
6415 handle the new API. Currently only ECB, CBC modes supported. Add new
6418 Add TLS AES ciphersuites as described in RFC3268, "Advanced
6419 Encryption Standard (AES) Ciphersuites for Transport Layer
6420 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
6421 not enabled by default and were not part of the "ALL" ciphersuite
6422 alias because they were not yet official; they could be
6423 explicitly requested by specifying the "AESdraft" ciphersuite
6424 group alias. In the final release of OpenSSL 0.9.7, the group
6425 alias is called "AES" and is part of "ALL".)
6426 [Ben Laurie, Steve Henson, Bodo Moeller]
6428 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
6429 request to response.
6432 *) Functions for OCSP responders. OCSP_request_onereq_count(),
6433 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
6434 extract information from a certificate request. OCSP_response_create()
6435 creates a response and optionally adds a basic response structure.
6436 OCSP_basic_add1_status() adds a complete single response to a basic
6437 response and returns the OCSP_SINGLERESP structure just added (to allow
6438 extensions to be included for example). OCSP_basic_add1_cert() adds a
6439 certificate to a basic response and OCSP_basic_sign() signs a basic
6440 response with various flags. New helper functions ASN1_TIME_check()
6441 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
6442 (converts ASN1_TIME to GeneralizedTime).
6445 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
6446 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
6447 structure from a certificate. X509_pubkey_digest() digests the public_key
6448 contents: this is used in various key identifiers.
6451 *) Make sk_sort() tolerate a NULL argument.
6452 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
6454 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
6455 passed by the function are trusted implicitly. If any of them signed the
6456 response then it is assumed to be valid and is not verified.
6459 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
6460 to data. This was previously part of the PKCS7 ASN1 code. This
6461 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
6462 [Steve Henson, reported by Kenneth R. Robinette
6463 <support@securenetterm.com>]
6465 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
6466 routines: without these tracing memory leaks is very painful.
6467 Fix leaks in PKCS12 and PKCS7 routines.
6470 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
6471 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
6472 effectively meant GeneralizedTime would never be used. Now it
6473 is initialised to -1 but X509_time_adj() now has to check the value
6474 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
6475 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
6476 [Steve Henson, reported by Kenneth R. Robinette
6477 <support@securenetterm.com>]
6479 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
6480 result in a zero length in the ASN1_INTEGER structure which was
6481 not consistent with the structure when d2i_ASN1_INTEGER() was used
6482 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
6483 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
6484 where it did not print out a minus for negative ASN1_INTEGER.
6487 *) Add summary printout to ocsp utility. The various functions which
6488 convert status values to strings have been renamed to:
6489 OCSP_response_status_str(), OCSP_cert_status_str() and
6490 OCSP_crl_reason_str() and are no longer static. New options
6491 to verify nonce values and to disable verification. OCSP response
6492 printout format cleaned up.
6495 *) Add additional OCSP certificate checks. These are those specified
6496 in RFC2560. This consists of two separate checks: the CA of the
6497 certificate being checked must either be the OCSP signer certificate
6498 or the issuer of the OCSP signer certificate. In the latter case the
6499 OCSP signer certificate must contain the OCSP signing extended key
6500 usage. This check is performed by attempting to match the OCSP
6501 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
6502 in the OCSP_CERTID structures of the response.
6505 *) Initial OCSP certificate verification added to OCSP_basic_verify()
6506 and related routines. This uses the standard OpenSSL certificate
6507 verify routines to perform initial checks (just CA validity) and
6508 to obtain the certificate chain. Then additional checks will be
6509 performed on the chain. Currently the root CA is checked to see
6510 if it is explicitly trusted for OCSP signing. This is used to set
6511 a root CA as a global signing root: that is any certificate that
6512 chains to that CA is an acceptable OCSP signing certificate.
6515 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
6516 extensions from a separate configuration file.
6517 As when reading extensions from the main configuration file,
6518 the '-extensions ...' option may be used for specifying the
6520 [Massimiliano Pala <madwolf@comune.modena.it>]
6522 *) New OCSP utility. Allows OCSP requests to be generated or
6523 read. The request can be sent to a responder and the output
6524 parsed, outputed or printed in text form. Not complete yet:
6525 still needs to check the OCSP response validity.
6528 *) New subcommands for 'openssl ca':
6529 'openssl ca -status <serial>' prints the status of the cert with
6530 the given serial number (according to the index file).
6531 'openssl ca -updatedb' updates the expiry status of certificates
6533 [Massimiliano Pala <madwolf@comune.modena.it>]
6535 *) New '-newreq-nodes' command option to CA.pl. This is like
6536 '-newreq', but calls 'openssl req' with the '-nodes' option
6537 so that the resulting key is not encrypted.
6538 [Damien Miller <djm@mindrot.org>]
6540 *) New configuration for the GNU Hurd.
6541 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
6543 *) Initial code to implement OCSP basic response verify. This
6544 is currently incomplete. Currently just finds the signer's
6545 certificate and verifies the signature on the response.
6548 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
6549 value of OPENSSLDIR. This is available via the new '-d' option
6550 to 'openssl version', and is also included in 'openssl version -a'.
6553 *) Allowing defining memory allocation callbacks that will be given
6554 file name and line number information in additional arguments
6555 (a const char* and an int). The basic functionality remains, as
6556 well as the original possibility to just replace malloc(),
6557 realloc() and free() by functions that do not know about these
6558 additional arguments. To register and find out the current
6559 settings for extended allocation functions, the following
6560 functions are provided:
6562 CRYPTO_set_mem_ex_functions
6563 CRYPTO_set_locked_mem_ex_functions
6564 CRYPTO_get_mem_ex_functions
6565 CRYPTO_get_locked_mem_ex_functions
6567 These work the same way as CRYPTO_set_mem_functions and friends.
6568 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
6569 extended allocation function is enabled.
6570 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
6571 a conventional allocation function is enabled.
6572 [Richard Levitte, Bodo Moeller]
6574 *) Finish off removing the remaining LHASH function pointer casts.
6575 There should no longer be any prototype-casting required when using
6576 the LHASH abstraction, and any casts that remain are "bugs". See
6577 the callback types and macros at the head of lhash.h for details
6578 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
6581 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
6582 If /dev/[u]random devices are not available or do not return enough
6583 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
6585 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
6586 /etc/entropy will be queried once each in this sequence, quering stops
6587 when enough entropy was collected without querying more sockets.
6590 *) Change the Unix RAND_poll() variant to be able to poll several
6591 random devices, as specified by DEVRANDOM, until a sufficient amount
6592 of data has been collected. We spend at most 10 ms on each file
6593 (select timeout) and read in non-blocking mode. DEVRANDOM now
6594 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
6595 (previously it was just the string "/dev/urandom"), so on typical
6596 platforms the 10 ms delay will never occur.
6597 Also separate out the Unix variant to its own file, rand_unix.c.
6598 For VMS, there's a currently-empty rand_vms.c.
6601 *) Move OCSP client related routines to ocsp_cl.c. These
6602 provide utility functions which an application needing
6603 to issue a request to an OCSP responder and analyse the
6604 response will typically need: as opposed to those which an
6605 OCSP responder itself would need which will be added later.
6607 OCSP_request_sign() signs an OCSP request with an API similar
6608 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
6609 response. OCSP_response_get1_basic() extracts basic response
6610 from response. OCSP_resp_find_status(): finds and extracts status
6611 information from an OCSP_CERTID structure (which will be created
6612 when the request structure is built). These are built from lower
6613 level functions which work on OCSP_SINGLERESP structures but
6614 wont normally be used unless the application wishes to examine
6615 extensions in the OCSP response for example.
6617 Replace nonce routines with a pair of functions.
6618 OCSP_request_add1_nonce() adds a nonce value and optionally
6619 generates a random value. OCSP_check_nonce() checks the
6620 validity of the nonce in an OCSP response.
6623 *) Change function OCSP_request_add() to OCSP_request_add0_id().
6624 This doesn't copy the supplied OCSP_CERTID and avoids the
6625 need to free up the newly created id. Change return type
6626 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
6627 This can then be used to add extensions to the request.
6628 Deleted OCSP_request_new(), since most of its functionality
6629 is now in OCSP_REQUEST_new() (and the case insensitive name
6630 clash) apart from the ability to set the request name which
6631 will be added elsewhere.
6634 *) Update OCSP API. Remove obsolete extensions argument from
6635 various functions. Extensions are now handled using the new
6636 OCSP extension code. New simple OCSP HTTP function which
6637 can be used to send requests and parse the response.
6640 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
6641 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
6642 uses the special reorder version of SET OF to sort the attributes
6643 and reorder them to match the encoded order. This resolves a long
6644 standing problem: a verify on a PKCS7 structure just after signing
6645 it used to fail because the attribute order did not match the
6646 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
6647 it uses the received order. This is necessary to tolerate some broken
6648 software that does not order SET OF. This is handled by encoding
6649 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
6650 to produce the required SET OF.
6653 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
6654 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
6655 files to get correct declarations of the ASN.1 item variables.
6658 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
6659 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
6660 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
6661 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
6662 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
6663 ASN1_ITEM and no wrapper functions.
6666 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
6667 replace the old function pointer based I/O routines. Change most of
6668 the *_d2i_bio() and *_d2i_fp() functions to use these.
6671 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
6672 lines, recognice more "algorithms" that can be deselected, and make
6673 it complain about algorithm deselection that isn't recognised.
6676 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
6677 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
6678 to use new functions. Add NO_ASN1_OLD which can be set to remove
6679 some old style ASN1 functions: this can be used to determine if old
6680 code will still work when these eventually go away.
6683 *) New extension functions for OCSP structures, these follow the
6684 same conventions as certificates and CRLs.
6687 *) New function X509V3_add1_i2d(). This automatically encodes and
6688 adds an extension. Its behaviour can be customised with various
6689 flags to append, replace or delete. Various wrappers added for
6690 certifcates and CRLs.
6693 *) Fix to avoid calling the underlying ASN1 print routine when
6694 an extension cannot be parsed. Correct a typo in the
6695 OCSP_SERVICELOC extension. Tidy up print OCSP format.
6698 *) Make mkdef.pl parse some of the ASN1 macros and add appropriate
6699 entries for variables.
6702 *) Add functionality to apps/openssl.c for detecting locking
6703 problems: As the program is single-threaded, all we have
6704 to do is register a locking callback using an array for
6705 storing which locks are currently held by the program.
6708 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
6709 SSL_get_ex_data_X509_STORE_idx(), which is used in
6710 ssl_verify_cert_chain() and thus can be called at any time
6711 during TLS/SSL handshakes so that thread-safety is essential.
6712 Unfortunately, the ex_data design is not at all suited
6713 for multi-threaded use, so it probably should be abolished.
6716 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
6717 [Broadcom, tweaked and integrated by Geoff Thorpe]
6719 *) Move common extension printing code to new function
6720 X509V3_print_extensions(). Reorganise OCSP print routines and
6721 implement some needed OCSP ASN1 functions. Add OCSP extensions.
6724 *) New function X509_signature_print() to remove duplication in some
6728 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
6729 set (this was treated exactly the same as SET OF previously). This
6730 is used to reorder the STACK representing the structure to match the
6731 encoding. This will be used to get round a problem where a PKCS7
6732 structure which was signed could not be verified because the STACK
6733 order did not reflect the encoded order.
6736 *) Reimplement the OCSP ASN1 module using the new code.
6739 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
6740 for its ASN1 operations. The old style function pointers still exist
6741 for now but they will eventually go away.
6744 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
6745 completely replaces the old ASN1 functionality with a table driven
6746 encoder and decoder which interprets an ASN1_ITEM structure describing
6747 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
6748 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
6749 has also been converted to the new form.
6752 *) Change BN_mod_exp_recp so that negative moduli are tolerated
6753 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
6754 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
6755 for negative moduli.
6758 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
6759 of not touching the result's sign bit.
6762 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
6766 *) Changed the LHASH code to use prototypes for callbacks, and created
6767 macros to declare and implement thin (optionally static) functions
6768 that provide type-safety and avoid function pointer casting for the
6769 type-specific callbacks.
6772 *) Added Kerberos Cipher Suites to be used with TLS, as written in
6774 [Veers Staats <staatsvr@asc.hpc.mil>,
6775 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
6777 *) Reformat the FAQ so the different questions and answers can be divided
6778 in sections depending on the subject.
6781 *) Have the zlib compression code load ZLIB.DLL dynamically under
6785 *) New function BN_mod_sqrt for computing square roots modulo a prime
6786 (using the probabilistic Tonelli-Shanks algorithm unless
6787 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
6788 be handled deterministically).
6789 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
6791 *) Make BN_mod_inverse faster by explicitly handling small quotients
6792 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
6793 512 bits], about 30% for larger ones [1024 or 2048 bits].)
6796 *) New function BN_kronecker.
6799 *) Fix BN_gcd so that it works on negative inputs; the result is
6800 positive unless both parameters are zero.
6801 Previously something reasonably close to an infinite loop was
6802 possible because numbers could be growing instead of shrinking
6803 in the implementation of Euclid's algorithm.
6806 *) Fix BN_is_word() and BN_is_one() macros to take into account the
6807 sign of the number in question.
6809 Fix BN_is_word(a,w) to work correctly for w == 0.
6811 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
6812 because its test if the absolute value of 'a' equals 'w'.
6813 Note that BN_abs_is_word does *not* handle w == 0 reliably;
6814 it exists mostly for use in the implementations of BN_is_zero(),
6815 BN_is_one(), and BN_is_word().
6818 *) New function BN_swap.
6821 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
6822 the exponentiation functions are more likely to produce reasonable
6823 results on negative inputs.
6826 *) Change BN_mod_mul so that the result is always non-negative.
6827 Previously, it could be negative if one of the factors was negative;
6828 I don't think anyone really wanted that behaviour.
6831 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
6832 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
6833 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
6834 and add new functions:
6843 BN_mod_lshift1_quick
6847 These functions always generate non-negative results.
6849 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
6850 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
6852 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
6853 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
6854 be reduced modulo m.
6855 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
6858 The following entry accidentally appeared in the CHANGES file
6859 distributed with OpenSSL 0.9.7. The modifications described in
6860 it do *not* apply to OpenSSL 0.9.7.
6862 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
6863 was actually never needed) and in BN_mul(). The removal in BN_mul()
6864 required a small change in bn_mul_part_recursive() and the addition
6865 of the functions bn_cmp_part_words(), bn_sub_part_words() and
6866 bn_add_part_words(), which do the same thing as bn_cmp_words(),
6867 bn_sub_words() and bn_add_words() except they take arrays with
6872 *) In 'openssl passwd', verify passwords read from the terminal
6873 unless the '-salt' option is used (which usually means that
6874 verification would just waste user's time since the resulting
6875 hash is going to be compared with some given password hash)
6876 or the new '-noverify' option is used.
6878 This is an incompatible change, but it does not affect
6879 non-interactive use of 'openssl passwd' (passwords on the command
6880 line, '-stdin' option, '-in ...' option) and thus should not
6884 *) Remove all references to RSAref, since there's no more need for it.
6887 *) Make DSO load along a path given through an environment variable
6888 (SHLIB_PATH) with shl_load().
6891 *) Constify the ENGINE code as a result of BIGNUM constification.
6892 Also constify the RSA code and most things related to it. In a
6893 few places, most notable in the depth of the ASN.1 code, ugly
6894 casts back to non-const were required (to be solved at a later
6898 *) Make it so the openssl application has all engines loaded by default.
6901 *) Constify the BIGNUM routines a little more.
6904 *) Add the following functions:
6906 ENGINE_load_cswift()
6908 ENGINE_load_atalla()
6910 ENGINE_load_builtin_engines()
6912 That way, an application can itself choose if external engines that
6913 are built-in in OpenSSL shall ever be used or not. The benefit is
6914 that applications won't have to be linked with libdl or other dso
6915 libraries unless it's really needed.
6917 Changed 'openssl engine' to load all engines on demand.
6918 Changed the engine header files to avoid the duplication of some
6919 declarations (they differed!).
6922 *) 'openssl engine' can now list capabilities.
6925 *) Better error reporting in 'openssl engine'.
6928 *) Never call load_dh_param(NULL) in s_server.
6931 *) Add engine application. It can currently list engines by name and
6932 identity, and test if they are actually available.
6935 *) Improve RPM specification file by forcing symbolic linking and making
6936 sure the installed documentation is also owned by root.root.
6937 [Damien Miller <djm@mindrot.org>]
6939 *) Give the OpenSSL applications more possibilities to make use of
6940 keys (public as well as private) handled by engines.
6943 *) Add OCSP code that comes from CertCo.
6946 *) Add VMS support for the Rijndael code.
6949 *) Added untested support for Nuron crypto accelerator.
6952 *) Add support for external cryptographic devices. This code was
6953 previously distributed separately as the "engine" branch.
6954 [Geoff Thorpe, Richard Levitte]
6956 *) Rework the filename-translation in the DSO code. It is now possible to
6957 have far greater control over how a "name" is turned into a filename
6958 depending on the operating environment and any oddities about the
6959 different shared library filenames on each system.
6962 *) Support threads on FreeBSD-elf in Configure.
6965 *) Fix for SHA1 assembly problem with MASM: it produces
6966 warnings about corrupt line number information when assembling
6967 with debugging information. This is caused by the overlapping
6969 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
6972 NCONF_get_number() has no error checking at all. As a replacement,
6973 NCONF_get_number_e() is defined (_e for "error checking") and is
6974 promoted strongly. The old NCONF_get_number is kept around for
6975 binary backward compatibility.
6976 Make it possible for methods to load from something other than a BIO,
6977 by providing a function pointer that is given a name instead of a BIO.
6978 For example, this could be used to load configuration data from an
6982 *) Fix for non blocking accept BIOs. Added new I/O special reason
6983 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
6984 with non blocking I/O was not possible because no retry code was
6985 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
6989 *) Added the beginnings of Rijndael support.
6992 *) Fix for bug in DirectoryString mask setting. Add support for
6993 X509_NAME_print_ex() in 'req' and X509_print_ex() function
6994 to allow certificate printing to more controllable, additional
6995 'certopt' option to 'x509' to allow new printing options to be
6999 *) Clean old EAY MD5 hack from e_os.h.
7002 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
7004 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
7005 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
7006 [Joe Orton, Steve Henson]
7008 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
7010 *) Fix additional bug revealed by the NISCC test suite:
7012 Stop bug triggering large recursion when presented with
7013 certain ASN.1 tags (CVE-2003-0851)
7016 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
7018 *) Fix various bugs revealed by running the NISCC test suite:
7020 Stop out of bounds reads in the ASN1 code when presented with
7021 invalid tags (CVE-2003-0543 and CVE-2003-0544).
7023 If verify callback ignores invalid public key errors don't try to check
7024 certificate signature with the NULL public key.
7028 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
7029 if the server requested one: as stated in TLS 1.0 and SSL 3.0
7033 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
7034 extra data after the compression methods not only for TLS 1.0
7035 but also for SSL 3.0 (as required by the specification).
7036 [Bodo Moeller; problem pointed out by Matthias Loepfe]
7038 *) Change X509_certificate_type() to mark the key as exported/exportable
7039 when it's 512 *bits* long, not 512 bytes.
7042 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
7044 *) Countermeasure against the Klima-Pokorny-Rosa extension of
7045 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
7046 a protocol version number mismatch like a decryption error
7047 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
7050 *) Turn on RSA blinding by default in the default implementation
7051 to avoid a timing attack. Applications that don't want it can call
7052 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
7053 They would be ill-advised to do so in most cases.
7054 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
7056 *) Change RSA blinding code so that it works when the PRNG is not
7057 seeded (in this case, the secret RSA exponent is abused as
7058 an unpredictable seed -- if it is not unpredictable, there
7059 is no point in blinding anyway). Make RSA blinding thread-safe
7060 by remembering the creator's thread ID in rsa->blinding and
7061 having all other threads use local one-time blinding factors
7062 (this requires more computation than sharing rsa->blinding, but
7063 avoids excessive locking; and if an RSA object is not shared
7064 between threads, blinding will still be very fast).
7067 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
7069 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
7070 via timing by performing a MAC computation even if incorrrect
7071 block cipher padding has been found. This is a countermeasure
7072 against active attacks where the attacker has to distinguish
7073 between bad padding and a MAC verification error. (CVE-2003-0078)
7075 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
7076 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
7077 Martin Vuagnoux (EPFL, Ilion)]
7079 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
7081 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
7082 memory from it's contents. This is done with a counter that will
7083 place alternating values in each byte. This can be used to solve
7084 two issues: 1) the removal of calls to memset() by highly optimizing
7085 compilers, and 2) cleansing with other values than 0, since those can
7086 be read through on certain media, for example a swap space on disk.
7089 *) Bugfix: client side session caching did not work with external caching,
7090 because the session->cipher setting was not restored when reloading
7091 from the external cache. This problem was masked, when
7092 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
7093 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
7096 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
7097 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
7098 [Zeev Lieber <zeev-l@yahoo.com>]
7100 *) Undo an undocumented change introduced in 0.9.6e which caused
7101 repeated calls to OpenSSL_add_all_ciphers() and
7102 OpenSSL_add_all_digests() to be ignored, even after calling
7106 *) Change the default configuration reader to deal with last line not
7107 being properly terminated.
7110 *) Change X509_NAME_cmp() so it applies the special rules on handling
7111 DN values that are of type PrintableString, as well as RDNs of type
7112 emailAddress where the value has the type ia5String.
7113 [stefank@valicert.com via Richard Levitte]
7115 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
7116 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
7117 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
7118 the bitwise-OR of the two for use by the majority of applications
7119 wanting this behaviour, and update the docs. The documented
7120 behaviour and actual behaviour were inconsistent and had been
7121 changing anyway, so this is more a bug-fix than a behavioural
7123 [Geoff Thorpe, diagnosed by Nadav Har'El]
7125 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
7126 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
7129 *) Fix initialization code race conditions in
7130 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
7131 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
7132 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
7133 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
7134 ssl2_get_cipher_by_char(),
7135 ssl3_get_cipher_by_char().
7136 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
7138 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
7139 the cached sessions are flushed, as the remove_cb() might use ex_data
7140 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
7141 (see [openssl.org #212]).
7142 [Geoff Thorpe, Lutz Jaenicke]
7144 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
7145 length, instead of the encoding length to d2i_ASN1_OBJECT.
7148 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
7150 *) [In 0.9.6g-engine release:]
7151 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
7152 [Lynn Gazis <lgazis@rainbow.com>]
7154 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
7156 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
7157 and get fix the header length calculation.
7158 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
7159 Alon Kantor <alonk@checkpoint.com> (and others),
7162 *) Use proper error handling instead of 'assertions' in buffer
7163 overflow checks added in 0.9.6e. This prevents DoS (the
7164 assertions could call abort()).
7165 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
7167 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
7169 *) Add various sanity checks to asn1_get_length() to reject
7170 the ASN1 length bytes if they exceed sizeof(long), will appear
7171 negative or the content length exceeds the length of the
7173 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
7175 *) Fix cipher selection routines: ciphers without encryption had no flags
7176 for the cipher strength set and where therefore not handled correctly
7177 by the selection routines (PR #130).
7180 *) Fix EVP_dsa_sha macro.
7184 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
7185 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
7186 that was added in OpenSSL 0.9.6d.
7188 As the countermeasure turned out to be incompatible with some
7189 broken SSL implementations, the new option is part of SSL_OP_ALL.
7190 SSL_OP_ALL is usually employed when compatibility with weird SSL
7191 implementations is desired (e.g. '-bugs' option to 's_client' and
7192 's_server'), so the new option is automatically set in many
7196 *) Changes in security patch:
7198 Changes marked "(CHATS)" were sponsored by the Defense Advanced
7199 Research Projects Agency (DARPA) and Air Force Research Laboratory,
7200 Air Force Materiel Command, USAF, under agreement number
7203 *) Add various sanity checks to asn1_get_length() to reject
7204 the ASN1 length bytes if they exceed sizeof(long), will appear
7205 negative or the content length exceeds the length of the
7206 supplied buffer. (CVE-2002-0659)
7207 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
7209 *) Assertions for various potential buffer overflows, not known to
7211 [Ben Laurie (CHATS)]
7213 *) Various temporary buffers to hold ASCII versions of integers were
7214 too small for 64 bit platforms. (CVE-2002-0655)
7215 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
7217 *) Remote buffer overflow in SSL3 protocol - an attacker could
7218 supply an oversized session ID to a client. (CVE-2002-0656)
7219 [Ben Laurie (CHATS)]
7221 *) Remote buffer overflow in SSL2 protocol - an attacker could
7222 supply an oversized client master key. (CVE-2002-0656)
7223 [Ben Laurie (CHATS)]
7225 Changes between 0.9.6c and 0.9.6d [9 May 2002]
7227 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
7228 encoded as NULL) with id-dsa-with-sha1.
7229 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
7231 *) Check various X509_...() return values in apps/req.c.
7232 [Nils Larsch <nla@trustcenter.de>]
7234 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
7235 an end-of-file condition would erronously be flagged, when the CRLF
7236 was just at the end of a processed block. The bug was discovered when
7237 processing data through a buffering memory BIO handing the data to a
7238 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
7239 <ptsekov@syntrex.com> and Nedelcho Stanev.
7242 *) Implement a countermeasure against a vulnerability recently found
7243 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
7244 before application data chunks to avoid the use of known IVs
7245 with data potentially chosen by the attacker.
7248 *) Fix length checks in ssl3_get_client_hello().
7251 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
7252 to prevent ssl3_read_internal() from incorrectly assuming that
7253 ssl3_read_bytes() found application data while handshake
7254 processing was enabled when in fact s->s3->in_read_app_data was
7255 merely automatically cleared during the initial handshake.
7256 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
7258 *) Fix object definitions for Private and Enterprise: they were not
7259 recognized in their shortname (=lowercase) representation. Extend
7260 obj_dat.pl to issue an error when using undefined keywords instead
7261 of silently ignoring the problem (Svenning Sorensen
7262 <sss@sss.dnsalias.net>).
7265 *) Fix DH_generate_parameters() so that it works for 'non-standard'
7266 generators, i.e. generators other than 2 and 5. (Previously, the
7267 code did not properly initialise the 'add' and 'rem' values to
7268 BN_generate_prime().)
7270 In the new general case, we do not insist that 'generator' is
7271 actually a primitive root: This requirement is rather pointless;
7272 a generator of the order-q subgroup is just as good, if not
7276 *) Map new X509 verification errors to alerts. Discovered and submitted by
7277 Tom Wu <tom@arcot.com>.
7280 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
7281 returning non-zero before the data has been completely received
7282 when using non-blocking I/O.
7283 [Bodo Moeller; problem pointed out by John Hughes]
7285 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
7286 [Ben Laurie, Lutz Jaenicke]
7288 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
7289 Yoram Zahavi <YoramZ@gilian.com>).
7292 *) Add information about CygWin 1.3 and on, and preserve proper
7293 configuration for the versions before that.
7294 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
7296 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
7297 check whether we deal with a copy of a session and do not delete from
7298 the cache in this case. Problem reported by "Izhar Shoshani Levi"
7299 <izhar@checkpoint.com>.
7302 *) Do not store session data into the internal session cache, if it
7303 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
7304 flag is set). Proposed by Aslam <aslam@funk.com>.
7307 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
7311 *) [In 0.9.6d-engine release:]
7312 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
7313 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
7315 *) Add the configuration target linux-s390x.
7316 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
7318 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
7319 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
7320 variable as an indication that a ClientHello message has been
7321 received. As the flag value will be lost between multiple
7322 invocations of ssl3_accept when using non-blocking I/O, the
7323 function may not be aware that a handshake has actually taken
7324 place, thus preventing a new session from being added to the
7327 To avoid this problem, we now set s->new_session to 2 instead of
7328 using a local variable.
7329 [Lutz Jaenicke, Bodo Moeller]
7331 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
7332 if the SSL_R_LENGTH_MISMATCH error is detected.
7333 [Geoff Thorpe, Bodo Moeller]
7335 *) New 'shared_ldflag' column in Configure platform table.
7338 *) Fix EVP_CIPHER_mode macro.
7339 ["Dan S. Camper" <dan@bti.net>]
7341 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
7342 type, we must throw them away by setting rr->length to 0.
7343 [D P Chang <dpc@qualys.com>]
7345 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
7347 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
7348 <Dominikus.Scherkl@biodata.com>. (The previous implementation
7349 worked incorrectly for those cases where range = 10..._2 and
7350 3*range is two bits longer than range.)
7353 *) Only add signing time to PKCS7 structures if it is not already
7357 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
7358 OBJ_ld_ce should be OBJ_id_ce.
7359 Also some ip-pda OIDs in crypto/objects/objects.txt were
7360 incorrect (cf. RFC 3039).
7361 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
7363 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
7364 returns early because it has nothing to do.
7365 [Andy Schneider <andy.schneider@bjss.co.uk>]
7367 *) [In 0.9.6c-engine release:]
7368 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
7369 [Andy Schneider <andy.schneider@bjss.co.uk>]
7371 *) [In 0.9.6c-engine release:]
7372 Add support for Cryptographic Appliance's keyserver technology.
7373 (Use engine 'keyclient')
7374 [Cryptographic Appliances and Geoff Thorpe]
7376 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
7377 is called via tools/c89.sh because arguments have to be
7378 rearranged (all '-L' options must appear before the first object
7380 [Richard Shapiro <rshapiro@abinitio.com>]
7382 *) [In 0.9.6c-engine release:]
7383 Add support for Broadcom crypto accelerator cards, backported
7385 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
7387 *) [In 0.9.6c-engine release:]
7388 Add support for SureWare crypto accelerator cards from
7389 Baltimore Technologies. (Use engine 'sureware')
7390 [Baltimore Technologies and Mark Cox]
7392 *) [In 0.9.6c-engine release:]
7393 Add support for crypto accelerator cards from Accelerated
7394 Encryption Processing, www.aep.ie. (Use engine 'aep')
7395 [AEP Inc. and Mark Cox]
7397 *) Add a configuration entry for gcc on UnixWare.
7398 [Gary Benson <gbenson@redhat.com>]
7400 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
7401 messages are stored in a single piece (fixed-length part and
7402 variable-length part combined) and fix various bugs found on the way.
7405 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
7406 instead. BIO_gethostbyname() does not know what timeouts are
7407 appropriate, so entries would stay in cache even when they have
7409 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
7411 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
7412 faced with a pathologically small ClientHello fragment that does
7413 not contain client_version: Instead of aborting with an error,
7414 simply choose the highest available protocol version (i.e.,
7415 TLS 1.0 unless it is disabled). In practice, ClientHello
7416 messages are never sent like this, but this change gives us
7417 strictly correct behaviour at least for TLS.
7420 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
7421 never resets s->method to s->ctx->method when called from within
7422 one of the SSL handshake functions.
7423 [Bodo Moeller; problem pointed out by Niko Baric]
7425 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
7426 (sent using the client's version number) if client_version is
7427 smaller than the protocol version in use. Also change
7428 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
7429 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
7430 the client will at least see that alert.
7433 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
7437 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
7438 client receives HelloRequest while in a handshake.
7439 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
7441 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
7442 should end in 'break', not 'goto end' which circumvents various
7443 cleanups done in state SSL_ST_OK. But session related stuff
7444 must be disabled for SSL_ST_OK in the case that we just sent a
7447 Also avoid some overhead by not calling ssl_init_wbio_buffer()
7448 before just sending a HelloRequest.
7449 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
7451 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
7452 reveal whether illegal block cipher padding was found or a MAC
7453 verification error occured. (Neither SSLerr() codes nor alerts
7454 are directly visible to potential attackers, but the information
7455 may leak via logfiles.)
7457 Similar changes are not required for the SSL 2.0 implementation
7458 because the number of padding bytes is sent in clear for SSL 2.0,
7459 and the extra bytes are just ignored. However ssl/s2_pkt.c
7460 failed to verify that the purported number of padding bytes is in
7464 *) Add OpenUNIX-8 support including shared libraries
7465 (Boyd Lynn Gerber <gerberb@zenez.com>).
7468 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
7469 'wristwatch attack' using huge encoding parameters (cf.
7470 James H. Manger's CRYPTO 2001 paper). Note that the
7471 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
7472 encoding parameters and hence was not vulnerable.
7475 *) BN_sqr() bug fix.
7476 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
7478 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
7479 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
7480 followed by modular reduction.
7481 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
7483 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
7484 equivalent based on BN_pseudo_rand() instead of BN_rand().
7487 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
7488 This function was broken, as the check for a new client hello message
7489 to handle SGC did not allow these large messages.
7490 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
7493 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
7496 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
7497 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
7500 *) Rework the configuration and shared library support for Tru64 Unix.
7501 The configuration part makes use of modern compiler features and
7502 still retains old compiler behavior for those that run older versions
7503 of the OS. The shared library support part includes a variant that
7504 uses the RPATH feature, and is available through the special
7505 configuration target "alpha-cc-rpath", which will never be selected
7507 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
7509 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
7510 with the same message size as in ssl3_get_certificate_request().
7511 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
7512 messages might inadvertently be reject as too long.
7513 [Petr Lampa <lampa@fee.vutbr.cz>]
7515 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
7518 *) Modified SSL library such that the verify_callback that has been set
7519 specificly for an SSL object with SSL_set_verify() is actually being
7520 used. Before the change, a verify_callback set with this function was
7521 ignored and the verify_callback() set in the SSL_CTX at the time of
7522 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
7523 to allow the necessary settings.
7526 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
7527 explicitly to NULL, as at least on Solaris 8 this seems not always to be
7528 done automatically (in contradiction to the requirements of the C
7529 standard). This made problems when used from OpenSSH.
7532 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
7533 dh->length and always used
7535 BN_rand_range(priv_key, dh->p).
7537 BN_rand_range() is not necessary for Diffie-Hellman, and this
7538 specific range makes Diffie-Hellman unnecessarily inefficient if
7539 dh->length (recommended exponent length) is much smaller than the
7540 length of dh->p. We could use BN_rand_range() if the order of
7541 the subgroup was stored in the DH structure, but we only have
7546 BN_rand(priv_key, l, ...)
7548 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
7554 RSA_eay_public_encrypt
7555 RSA_eay_private_decrypt
7556 RSA_eay_private_encrypt (signing)
7557 RSA_eay_public_decrypt (signature verification)
7559 (default implementations for RSA_public_encrypt,
7560 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
7561 always reject numbers >= n.
7564 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
7565 to synchronize access to 'locking_thread'. This is necessary on
7566 systems where access to 'locking_thread' (an 'unsigned long'
7567 variable) is not atomic.
7570 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
7571 *before* setting the 'crypto_lock_rand' flag. The previous code had
7572 a race condition if 0 is a valid thread ID.
7573 [Travis Vitek <vitek@roguewave.com>]
7575 *) Add support for shared libraries under Irix.
7576 [Albert Chin-A-Young <china@thewrittenword.com>]
7578 *) Add configuration option to build on Linux on both big-endian and
7580 [Ralf Baechle <ralf@uni-koblenz.de>]
7582 *) Add the possibility to create shared libraries on HP-UX.
7585 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
7587 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
7588 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
7589 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
7590 PRNG state recovery was possible based on the output of
7591 one PRNG request appropriately sized to gain knowledge on
7592 'md' followed by enough consecutive 1-byte PRNG requests
7593 to traverse all of 'state'.
7595 1. When updating 'md_local' (the current thread's copy of 'md')
7596 during PRNG output generation, hash all of the previous
7597 'md_local' value, not just the half used for PRNG output.
7599 2. Make the number of bytes from 'state' included into the hash
7600 independent from the number of PRNG bytes requested.
7602 The first measure alone would be sufficient to avoid
7603 Markku-Juhani's attack. (Actually it had never occurred
7604 to me that the half of 'md_local' used for chaining was the
7605 half from which PRNG output bytes were taken -- I had always
7606 assumed that the secret half would be used.) The second
7607 measure makes sure that additional data from 'state' is never
7608 mixed into 'md_local' in small portions; this heuristically
7609 further strengthens the PRNG.
7612 *) Fix crypto/bn/asm/mips3.s.
7615 *) When only the key is given to "enc", the IV is undefined. Print out
7616 an error message in this case.
7619 *) Handle special case when X509_NAME is empty in X509 printing routines.
7622 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
7623 positive and less than q.
7626 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
7627 used: it isn't thread safe and the add_lock_callback should handle
7629 [Paul Rose <Paul.Rose@bridge.com>]
7631 *) Verify that incoming data obeys the block size in
7632 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
7636 [Ulf Möller, Bodo Möller]
7638 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
7639 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
7640 when fixing the server behaviour for backwards-compatible 'client
7641 hello' messages. (Note that the attack is impractical against
7642 SSL 3.0 and TLS 1.0 anyway because length and version checking
7643 means that the probability of guessing a valid ciphertext is
7644 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
7647 Before 0.9.5, the countermeasure (hide the error by generating a
7648 random 'decryption result') did not work properly because
7649 ERR_clear_error() was missing, meaning that SSL_get_error() would
7650 detect the supposedly ignored error.
7652 Both problems are now fixed.
7655 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
7656 (previously it was 1024).
7659 *) Fix for compatibility mode trust settings: ignore trust settings
7660 unless some valid trust or reject settings are present.
7663 *) Fix for blowfish EVP: its a variable length cipher.
7666 *) Fix various bugs related to DSA S/MIME verification. Handle missing
7667 parameters in DSA public key structures and return an error in the
7668 DSA routines if parameters are absent.
7671 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
7672 in the current directory if neither $RANDFILE nor $HOME was set.
7673 RAND_file_name() in 0.9.6a returned NULL in this case. This has
7674 caused some confusion to Windows users who haven't defined $HOME.
7675 Thus RAND_file_name() is changed again: e_os.h can define a
7676 DEFAULT_HOME, which will be used if $HOME is not set.
7677 For Windows, we use "C:"; on other platforms, we still require
7678 environment variables.
7680 *) Move 'if (!initialized) RAND_poll()' into regions protected by
7681 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
7682 having multiple threads call RAND_poll() concurrently.
7685 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
7686 combination of a flag and a thread ID variable.
7687 Otherwise while one thread is in ssleay_rand_bytes (which sets the
7688 flag), *other* threads can enter ssleay_add_bytes without obeying
7689 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
7690 that they do not hold after the first thread unsets add_do_not_lock).
7693 *) Change bctest again: '-x' expressions are not available in all
7697 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
7699 *) Fix a couple of memory leaks in PKCS7_dataDecode()
7700 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
7702 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
7703 the default extension for executables, if any. Also, make the perl
7704 scripts that use symlink() to test if it really exists and use "cp"
7705 if it doesn't. All this made OpenSSL compilable and installable in
7709 *) Fix for asn1_GetSequence() for indefinite length constructed data.
7710 If SEQUENCE is length is indefinite just set c->slen to the total
7711 amount of data available.
7712 [Steve Henson, reported by shige@FreeBSD.org]
7713 [This change does not apply to 0.9.7.]
7715 *) Change bctest to avoid here-documents inside command substitution
7716 (workaround for FreeBSD /bin/sh bug).
7717 For compatibility with Ultrix, avoid shell functions (introduced
7718 in the bctest version that searches along $PATH).
7721 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
7722 with des_encrypt() defined on some operating systems, like Solaris
7726 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
7727 On the Importance of Eliminating Errors in Cryptographic
7728 Computations, J. Cryptology 14 (2001) 2, 101-119,
7729 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
7732 *) MIPS assembler BIGNUM division bug fix.
7735 *) Disabled incorrect Alpha assembler code.
7738 *) Fix PKCS#7 decode routines so they correctly update the length
7739 after reading an EOC for the EXPLICIT tag.
7741 [This change does not apply to 0.9.7.]
7743 *) Fix bug in PKCS#12 key generation routines. This was triggered
7744 if a 3DES key was generated with a 0 initial byte. Include
7745 PKCS12_BROKEN_KEYGEN compilation option to retain the old
7746 (but broken) behaviour.
7749 *) Enhance bctest to search for a working bc along $PATH and print
7751 [Tim Rice <tim@multitalents.net> via Richard Levitte]
7753 *) Fix memory leaks in err.c: free err_data string if necessary;
7754 don't write to the wrong index in ERR_set_error_data.
7757 *) Implement ssl23_peek (analogous to ssl23_read), which previously
7761 *) Replace rdtsc with _emit statements for VC++ version 5.
7762 [Jeremy Cooper <jeremy@baymoo.org>]
7764 *) Make it possible to reuse SSLv2 sessions.
7767 *) In copy_email() check for >= 0 as a return value for
7768 X509_NAME_get_index_by_NID() since 0 is a valid index.
7769 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
7771 *) Avoid coredump with unsupported or invalid public keys by checking if
7772 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
7773 PKCS7_verify() fails with non detached data.
7776 *) Don't use getenv in library functions when run as setuid/setgid.
7777 New function OPENSSL_issetugid().
7780 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
7781 due to incorrect handling of multi-threading:
7783 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
7785 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
7787 3. Count how many times MemCheck_off() has been called so that
7788 nested use can be treated correctly. This also avoids
7789 inband-signalling in the previous code (which relied on the
7790 assumption that thread ID 0 is impossible).
7793 *) Add "-rand" option also to s_client and s_server.
7796 *) Fix CPU detection on Irix 6.x.
7797 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
7798 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
7800 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
7803 [This change does not apply to 0.9.7.]
7805 *) Use the cached encoding of an X509_NAME structure rather than
7806 copying it. This is apparently the reason for the libsafe "errors"
7807 but the code is actually correct.
7810 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
7811 Bleichenbacher's DSA attack.
7812 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
7813 to be set and top=0 forces the highest bit to be set; top=-1 is new
7814 and leaves the highest bit random.
7815 [Ulf Moeller, Bodo Moeller]
7817 *) In the NCONF_...-based implementations for CONF_... queries
7818 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
7819 a temporary CONF structure with the data component set to NULL
7820 (which gives segmentation faults in lh_retrieve).
7821 Instead, use NULL for the CONF pointer in CONF_get_string and
7822 CONF_get_number (which may use environment variables) and directly
7823 return NULL from CONF_get_section.
7826 *) Fix potential buffer overrun for EBCDIC.
7829 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
7830 keyUsage if basicConstraints absent for a CA.
7833 *) Make SMIME_write_PKCS7() write mail header values with a format that
7834 is more generally accepted (no spaces before the semicolon), since
7835 some programs can't parse those values properly otherwise. Also make
7836 sure BIO's that break lines after each write do not create invalid
7840 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
7841 macros previously used would not encode an empty SEQUENCE OF
7842 and break the signature.
7844 [This change does not apply to 0.9.7.]
7846 *) Zero the premaster secret after deriving the master secret in
7850 *) Add some EVP_add_digest_alias registrations (as found in
7851 OpenSSL_add_all_digests()) to SSL_library_init()
7852 aka OpenSSL_add_ssl_algorithms(). This provides improved
7853 compatibility with peers using X.509 certificates
7854 with unconventional AlgorithmIdentifier OIDs.
7857 *) Fix for Irix with NO_ASM.
7858 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
7860 *) ./config script fixes.
7861 [Ulf Moeller, Richard Levitte]
7863 *) Fix 'openssl passwd -1'.
7866 *) Change PKCS12_key_gen_asc() so it can cope with non null
7867 terminated strings whose length is passed in the passlen
7868 parameter, for example from PEM callbacks. This was done
7869 by adding an extra length parameter to asc2uni().
7870 [Steve Henson, reported by <oddissey@samsung.co.kr>]
7872 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
7873 call failed, free the DSA structure.
7876 *) Fix to uni2asc() to cope with zero length Unicode strings.
7877 These are present in some PKCS#12 files.
7880 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
7881 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
7882 when writing a 32767 byte record.
7883 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
7885 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
7886 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
7888 (RSA objects have a reference count access to which is protected
7889 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
7890 so they are meant to be shared between threads.)
7891 [Bodo Moeller, Geoff Thorpe; original patch submitted by
7892 "Reddie, Steven" <Steven.Reddie@ca.com>]
7894 *) Fix a deadlock in CRYPTO_mem_leaks().
7897 *) Use better test patterns in bntest.
7900 *) rand_win.c fix for Borland C.
7903 *) BN_rshift bugfix for n == 0.
7906 *) Add a 'bctest' script that checks for some known 'bc' bugs
7907 so that 'make test' does not abort just because 'bc' is broken.
7910 *) Store verify_result within SSL_SESSION also for client side to
7911 avoid potential security hole. (Re-used sessions on the client side
7912 always resulted in verify_result==X509_V_OK, not using the original
7913 result of the server certificate verification.)
7916 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
7917 SSL3_RT_APPLICATION_DATA, return 0.
7918 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
7922 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
7923 releases, have been re-implemented by renaming the previous
7924 implementations of ssl2_read and ssl3_read to ssl2_read_internal
7925 and ssl3_read_internal, respectively, and adding 'peek' parameters
7926 to them. The new ssl[23]_{read,peek} functions are calls to
7927 ssl[23]_read_internal with the 'peek' flag set appropriately.
7928 A 'peek' parameter has also been added to ssl3_read_bytes, which
7929 does the actual work for ssl3_read_internal.
7932 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
7933 the method-specific "init()" handler. Also clean up ex_data after
7934 calling the method-specific "finish()" handler. Previously, this was
7935 happening the other way round.
7938 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
7939 The previous value, 12, was not always sufficient for BN_mod_exp().
7942 *) Make sure that shared libraries get the internal name engine with
7943 the full version number and not just 0. This should mark the
7944 shared libraries as not backward compatible. Of course, this should
7945 be changed again when we can guarantee backward binary compatibility.
7948 *) Fix typo in get_cert_by_subject() in by_dir.c
7949 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
7951 *) Rework the system to generate shared libraries:
7953 - Make note of the expected extension for the shared libraries and
7954 if there is a need for symbolic links from for example libcrypto.so.0
7955 to libcrypto.so.0.9.7. There is extended info in Configure for
7958 - Make as few rebuilds of the shared libraries as possible.
7960 - Still avoid linking the OpenSSL programs with the shared libraries.
7962 - When installing, install the shared libraries separately from the
7966 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
7968 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
7969 and not in SSL_clear because the latter is also used by the
7970 accept/connect functions; previously, the settings made by
7971 SSL_set_read_ahead would be lost during the handshake.
7972 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
7974 *) Correct util/mkdef.pl to be selective about disabled algorithms.
7975 Previously, it would create entries for disabled algorithms no
7979 *) Added several new manual pages for SSL_* function.
7982 Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
7984 *) In ssl23_get_client_hello, generate an error message when faced
7985 with an initial SSL 3.0/TLS record that is too small to contain the
7986 first two bytes of the ClientHello message, i.e. client_version.
7987 (Note that this is a pathologic case that probably has never happened
7988 in real life.) The previous approach was to use the version number
7989 from the record header as a substitute; but our protocol choice
7990 should not depend on that one because it is not authenticated
7991 by the Finished messages.
7994 *) More robust randomness gathering functions for Windows.
7995 [Jeffrey Altman <jaltman@columbia.edu>]
7997 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
7998 not set then we don't setup the error code for issuer check errors
7999 to avoid possibly overwriting other errors which the callback does
8000 handle. If an application does set the flag then we assume it knows
8001 what it is doing and can handle the new informational codes
8005 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
8006 a general "ANY" type, as such it should be able to decode anything
8007 including tagged types. However it didn't check the class so it would
8008 wrongly interpret tagged types in the same way as their universal
8009 counterpart and unknown types were just rejected. Changed so that the
8010 tagged and unknown types are handled in the same way as a SEQUENCE:
8011 that is the encoding is stored intact. There is also a new type
8012 "V_ASN1_OTHER" which is used when the class is not universal, in this
8013 case we have no idea what the actual type is so we just lump them all
8017 *) On VMS, stdout may very well lead to a file that is written to
8018 in a record-oriented fashion. That means that every write() will
8019 write a separate record, which will be read separately by the
8020 programs trying to read from it. This can be very confusing.
8022 The solution is to put a BIO filter in the way that will buffer
8023 text until a linefeed is reached, and then write everything a
8024 line at a time, so every record written will be an actual line,
8025 not chunks of lines and not (usually doesn't happen, but I've
8026 seen it once) several lines in one record. BIO_f_linebuffer() is
8029 Currently, it's a VMS-only method, because that's where it has
8030 been tested well enough.
8033 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
8034 it can return incorrect results.
8035 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
8036 but it was in 0.9.6-beta[12].)
8039 *) Disable the check for content being present when verifying detached
8040 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
8041 include zero length content when signing messages.
8044 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
8045 BIO_ctrl (for BIO pairs).
8048 *) Add DSO method for VMS.
8051 *) Bug fix: Montgomery multiplication could produce results with the
8055 *) Add RPM specification openssl.spec and modify it to build three
8056 packages. The default package contains applications, application
8057 documentation and run-time libraries. The devel package contains
8058 include files, static libraries and function documentation. The
8059 doc package contains the contents of the doc directory. The original
8060 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
8063 *) Add a large number of documentation files for many SSL routines.
8064 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
8066 *) Add a configuration entry for Sony News 4.
8067 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
8069 *) Don't set the two most significant bits to one when generating a
8070 random number < q in the DSA library.
8073 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
8074 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
8075 the underlying transport is blocking) if a handshake took place.
8076 (The default behaviour is needed by applications such as s_client
8077 and s_server that use select() to determine when to use SSL_read;
8078 but for applications that know in advance when to expect data, it
8079 just makes things more complicated.)
8082 *) Add RAND_egd_bytes(), which gives control over the number of bytes read
8086 *) Add a few more EBCDIC conditionals that make `req' and `x509'
8087 work better on such systems.
8088 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
8090 *) Add two demo programs for PKCS12_parse() and PKCS12_create().
8091 Update PKCS12_parse() so it copies the friendlyName and the
8092 keyid to the certificates aux info.
8095 *) Fix bug in PKCS7_verify() which caused an infinite loop
8096 if there was more than one signature.
8097 [Sven Uszpelkat <su@celocom.de>]
8099 *) Major change in util/mkdef.pl to include extra information
8100 about each symbol, as well as presenting variables as well
8101 as functions. This change means that there's n more need
8102 to rebuild the .num files when some algorithms are excluded.
8105 *) Allow the verify time to be set by an application,
8106 rather than always using the current time.
8109 *) Phase 2 verify code reorganisation. The certificate
8110 verify code now looks up an issuer certificate by a
8111 number of criteria: subject name, authority key id
8112 and key usage. It also verifies self signed certificates
8113 by the same criteria. The main comparison function is
8114 X509_check_issued() which performs these checks.
8116 Lot of changes were necessary in order to support this
8117 without completely rewriting the lookup code.
8119 Authority and subject key identifier are now cached.
8121 The LHASH 'certs' is X509_STORE has now been replaced
8122 by a STACK_OF(X509_OBJECT). This is mainly because an
8123 LHASH can't store or retrieve multiple objects with
8124 the same hash value.
8126 As a result various functions (which were all internal
8127 use only) have changed to handle the new X509_STORE
8128 structure. This will break anything that messed round
8129 with X509_STORE internally.
8131 The functions X509_STORE_add_cert() now checks for an
8132 exact match, rather than just subject name.
8134 The X509_STORE API doesn't directly support the retrieval
8135 of multiple certificates matching a given criteria, however
8136 this can be worked round by performing a lookup first
8137 (which will fill the cache with candidate certificates)
8138 and then examining the cache for matches. This is probably
8139 the best we can do without throwing out X509_LOOKUP
8140 entirely (maybe later...).
8142 The X509_VERIFY_CTX structure has been enhanced considerably.
8144 All certificate lookup operations now go via a get_issuer()
8145 callback. Although this currently uses an X509_STORE it
8146 can be replaced by custom lookups. This is a simple way
8147 to bypass the X509_STORE hackery necessary to make this
8148 work and makes it possible to use more efficient techniques
8149 in future. A very simple version which uses a simple
8150 STACK for its trusted certificate store is also provided
8151 using X509_STORE_CTX_trusted_stack().
8153 The verify_cb() and verify() callbacks now have equivalents
8154 in the X509_STORE_CTX structure.
8156 X509_STORE_CTX also has a 'flags' field which can be used
8157 to customise the verify behaviour.
8160 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
8161 excludes S/MIME capabilities.
8164 *) When a certificate request is read in keep a copy of the
8165 original encoding of the signed data and use it when outputing
8166 again. Signatures then use the original encoding rather than
8167 a decoded, encoded version which may cause problems if the
8168 request is improperly encoded.
8171 *) For consistency with other BIO_puts implementations, call
8172 buffer_write(b, ...) directly in buffer_puts instead of calling
8175 In BIO_puts, increment b->num_write as in BIO_write.
8176 [Peter.Sylvester@EdelWeb.fr]
8178 *) Fix BN_mul_word for the case where the word is 0. (We have to use
8179 BN_zero, we may not return a BIGNUM with an array consisting of
8183 *) Avoid calling abort() from within the library when problems are
8184 detected, except if preprocessor symbols have been defined
8185 (such as REF_CHECK, BN_DEBUG etc.).
8188 *) New openssl application 'rsautl'. This utility can be
8189 used for low level RSA operations. DER public key
8190 BIO/fp routines also added.
8193 *) New Configure entry and patches for compiling on QNX 4.
8194 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
8196 *) A demo state-machine implementation was sponsored by
8197 Nuron (http://www.nuron.com/) and is now available in
8198 demos/state_machine.
8201 *) New options added to the 'dgst' utility for signature
8202 generation and verification.
8205 *) Unrecognized PKCS#7 content types are now handled via a
8206 catch all ASN1_TYPE structure. This allows unsupported
8207 types to be stored as a "blob" and an application can
8208 encode and decode it manually.
8211 *) Fix various signed/unsigned issues to make a_strex.c
8213 [Oscar Jacobsson <oscar.jacobsson@celocom.com>]
8215 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
8216 length if passed a buffer. ASN1_INTEGER_to_BN failed
8217 if passed a NULL BN and its argument was negative.
8218 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
8220 *) Modification to PKCS#7 encoding routines to output definite
8221 length encoding. Since currently the whole structures are in
8222 memory there's not real point in using indefinite length
8223 constructed encoding. However if OpenSSL is compiled with
8224 the flag PKCS7_INDEFINITE_ENCODING the old form is used.
8227 *) Added BIO_vprintf() and BIO_vsnprintf().
8230 *) Added more prefixes to parse for in the the strings written
8231 through a logging bio, to cover all the levels that are available
8232 through syslog. The prefixes are now:
8234 PANIC, EMERG, EMR => LOG_EMERG
8235 ALERT, ALR => LOG_ALERT
8236 CRIT, CRI => LOG_CRIT
8237 ERROR, ERR => LOG_ERR
8238 WARNING, WARN, WAR => LOG_WARNING
8239 NOTICE, NOTE, NOT => LOG_NOTICE
8240 INFO, INF => LOG_INFO
8241 DEBUG, DBG => LOG_DEBUG
8243 and as before, if none of those prefixes are present at the
8244 beginning of the string, LOG_ERR is chosen.
8246 On Win32, the LOG_* levels are mapped according to this:
8248 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
8249 LOG_WARNING => EVENTLOG_WARNING_TYPE
8250 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
8254 *) Made it possible to reconfigure with just the configuration
8255 argument "reconf" or "reconfigure". The command line arguments
8256 are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
8257 and are retrieved from there when reconfiguring.
8261 [Assar Westerlund <assar@sics.se>, Richard Levitte]
8263 *) Add the arguments -CAfile and -CApath to the pkcs12 utility.
8266 *) The obj_dat.pl script was messing up the sorting of object
8267 names. The reason was that it compared the quoted version
8268 of strings as a result "OCSP" > "OCSP Signing" because
8269 " > SPACE. Changed script to store unquoted versions of
8270 names and add quotes on output. It was also omitting some
8271 names from the lookup table if they were given a default
8272 value (that is if SN is missing it is given the same
8273 value as LN and vice versa), these are now added on the
8274 grounds that if an object has a name we should be able to
8275 look it up. Finally added warning output when duplicate
8276 short or long names are found.
8279 *) Changes needed for Tandem NSK.
8280 [Scott Uroff <scott@xypro.com>]
8282 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
8283 RSA_padding_check_SSLv23(), special padding was never detected
8284 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
8285 version rollback attacks was not effective.
8287 In s23_clnt.c, don't use special rollback-attack detection padding
8288 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
8289 client; similarly, in s23_srvr.c, don't do the rollback check if
8290 SSL 2.0 is the only protocol enabled in the server.
8293 *) Make it possible to get hexdumps of unprintable data with 'openssl
8294 asn1parse'. By implication, the functions ASN1_parse_dump() and
8295 BIO_dump_indent() are added.
8298 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
8299 these print out strings and name structures based on various
8300 flags including RFC2253 support and proper handling of
8301 multibyte characters. Added options to the 'x509' utility
8302 to allow the various flags to be set.
8305 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
8306 Also change the functions X509_cmp_current_time() and
8307 X509_gmtime_adj() work with an ASN1_TIME structure,
8308 this will enable certificates using GeneralizedTime in validity
8309 dates to be checked.
8312 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid
8313 negative public key encodings) on by default,
8314 NO_NEG_PUBKEY_BUG can be set to disable it.
8317 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
8318 content octets. An i2c_ASN1_OBJECT is unnecessary because
8319 the encoding can be trivially obtained from the structure.
8322 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
8323 not read locks (CRYPTO_r_[un]lock).
8326 *) A first attempt at creating official support for shared
8327 libraries through configuration. I've kept it so the
8328 default is static libraries only, and the OpenSSL programs
8329 are always statically linked for now, but there are
8330 preparations for dynamic linking in place.
8331 This has been tested on Linux and Tru64.
8334 *) Randomness polling function for Win9x, as described in:
8335 Peter Gutmann, Software Generation of Practically Strong
8339 *) Fix so PRNG is seeded in req if using an already existing
8343 *) New options to smime application. -inform and -outform
8344 allow alternative formats for the S/MIME message including
8345 PEM and DER. The -content option allows the content to be
8346 specified separately. This should allow things like Netscape
8347 form signing output easier to verify.
8350 *) Fix the ASN1 encoding of tags using the 'long form'.
8353 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
8354 STRING types. These convert content octets to and from the
8355 underlying type. The actual tag and length octets are
8356 already assumed to have been read in and checked. These
8357 are needed because all other string types have virtually
8358 identical handling apart from the tag. By having versions
8359 of the ASN1 functions that just operate on content octets
8360 IMPLICIT tagging can be handled properly. It also allows
8361 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
8362 and ASN1_INTEGER are identical apart from the tag.
8365 *) Change the handling of OID objects as follows:
8367 - New object identifiers are inserted in objects.txt, following
8368 the syntax given in objects.README.
8369 - objects.pl is used to process obj_mac.num and create a new
8371 - obj_dat.pl is used to create a new obj_dat.h, using the data in
8374 This is currently kind of a hack, and the perl code in objects.pl
8375 isn't very elegant, but it works as I intended. The simplest way
8376 to check that it worked correctly is to look in obj_dat.h and
8377 check the array nid_objs and make sure the objects haven't moved
8378 around (this is important!). Additions are OK, as well as
8379 consistent name changes.
8382 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
8385 *) Addition of the command line parameter '-rand file' to 'openssl req'.
8386 The given file adds to whatever has already been seeded into the
8387 random pool through the RANDFILE configuration file option or
8388 environment variable, or the default random state file.
8391 *) mkstack.pl now sorts each macro group into lexical order.
8392 Previously the output order depended on the order the files
8393 appeared in the directory, resulting in needless rewriting
8397 *) Patches to make OpenSSL compile under Win32 again. Mostly
8398 work arounds for the VC++ problem that it treats func() as
8399 func(void). Also stripped out the parts of mkdef.pl that
8400 added extra typesafe functions: these no longer exist.
8403 *) Reorganisation of the stack code. The macros are now all
8404 collected in safestack.h . Each macro is defined in terms of
8405 a "stack macro" of the form SKM_<name>(type, a, b). The
8406 DEBUG_SAFESTACK is now handled in terms of function casts,
8407 this has the advantage of retaining type safety without the
8408 use of additional functions. If DEBUG_SAFESTACK is not defined
8409 then the non typesafe macros are used instead. Also modified the
8410 mkstack.pl script to handle the new form. Needs testing to see
8411 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
8412 the default if no major problems. Similar behaviour for ASN1_SET_OF
8413 and PKCS12_STACK_OF.
8416 *) When some versions of IIS use the 'NET' form of private key the
8417 key derivation algorithm is different. Normally MD5(password) is
8418 used as a 128 bit RC4 key. In the modified case
8419 MD5(MD5(password) + "SGCKEYSALT") is used instead. Added some
8420 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
8421 as the old Netscape_RSA functions except they have an additional
8422 'sgckey' parameter which uses the modified algorithm. Also added
8423 an -sgckey command line option to the rsa utility. Thanks to
8424 Adrian Peck <bertie@ncipher.com> for posting details of the modified
8425 algorithm to openssl-dev.
8428 *) The evp_local.h macros were using 'c.##kname' which resulted in
8429 invalid expansion on some systems (SCO 5.0.5 for example).
8430 Corrected to 'c.kname'.
8431 [Phillip Porch <root@theporch.com>]
8433 *) New X509_get1_email() and X509_REQ_get1_email() functions that return
8434 a STACK of email addresses from a certificate or request, these look
8435 in the subject name and the subject alternative name extensions and
8436 omit any duplicate addresses.
8439 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows.
8440 This makes DSA verification about 2 % faster.
8443 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
8444 (meaning that now 2^5 values will be precomputed, which is only 4 KB
8445 plus overhead for 1024 bit moduli).
8446 This makes exponentiations about 0.5 % faster for 1024 bit
8447 exponents (as measured by "openssl speed rsa2048").
8450 *) Rename memory handling macros to avoid conflicts with other
8452 Malloc => OPENSSL_malloc
8453 Malloc_locked => OPENSSL_malloc_locked
8454 Realloc => OPENSSL_realloc
8455 Free => OPENSSL_free
8458 *) New function BN_mod_exp_mont_word for small bases (roughly 15%
8459 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
8462 *) CygWin32 support.
8463 [John Jarvie <jjarvie@newsguy.com>]
8465 *) The type-safe stack code has been rejigged. It is now only compiled
8466 in when OpenSSL is configured with the DEBUG_SAFESTACK option and
8467 by default all type-specific stack functions are "#define"d back to
8468 standard stack functions. This results in more streamlined output
8469 but retains the type-safety checking possibilities of the original
8473 *) The STACK code has been cleaned up, and certain type declarations
8474 that didn't make a lot of sense have been brought in line. This has
8475 also involved a cleanup of sorts in safestack.h to more correctly
8476 map type-safe stack functions onto their plain stack counterparts.
8477 This work has also resulted in a variety of "const"ifications of
8478 lots of the code, especially "_cmp" operations which should normally
8479 be prototyped with "const" parameters anyway.
8482 *) When generating bytes for the first time in md_rand.c, 'stir the pool'
8483 by seeding with STATE_SIZE dummy bytes (with zero entropy count).
8484 (The PRNG state consists of two parts, the large pool 'state' and 'md',
8485 where all of 'md' is used each time the PRNG is used, but 'state'
8486 is used only indexed by a cyclic counter. As entropy may not be
8487 well distributed from the beginning, 'md' is important as a
8488 chaining variable. However, the output function chains only half
8489 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
8490 all of 'md', and seeding with STATE_SIZE dummy bytes will result
8491 in all of 'state' being rewritten, with the new values depending
8492 on virtually all of 'md'. This overcomes the 80 bit limitation.)
8495 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
8496 the handshake is continued after ssl_verify_cert_chain();
8497 otherwise, if SSL_VERIFY_NONE is set, remaining error codes
8498 can lead to 'unexplainable' connection aborts later.
8499 [Bodo Moeller; problem tracked down by Lutz Jaenicke]
8501 *) Major EVP API cipher revision.
8502 Add hooks for extra EVP features. This allows various cipher
8503 parameters to be set in the EVP interface. Support added for variable
8504 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
8505 setting of RC2 and RC5 parameters.
8507 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
8510 Remove lots of duplicated code from the EVP library. For example *every*
8511 cipher init() function handles the 'iv' in the same way according to the
8512 cipher mode. They also all do nothing if the 'key' parameter is NULL and
8513 for CFB and OFB modes they zero ctx->num.
8515 New functionality allows removal of S/MIME code RC2 hack.
8517 Most of the routines have the same form and so can be declared in terms
8520 By shifting this to the top level EVP_CipherInit() it can be removed from
8521 all individual ciphers. If the cipher wants to handle IVs or keys
8522 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
8525 Change lots of functions like EVP_EncryptUpdate() to now return a
8526 value: although software versions of the algorithms cannot fail
8527 any installed hardware versions can.
8530 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
8531 this option is set, tolerate broken clients that send the negotiated
8532 protocol version number instead of the requested protocol version
8536 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag;
8537 i.e. non-zero for export ciphersuites, zero otherwise.
8538 Previous versions had this flag inverted, inconsistent with
8539 rsa_tmp_cb (..._TMP_RSA_CB).
8540 [Bodo Moeller; problem reported by Amit Chopra]
8542 *) Add missing DSA library text string. Work around for some IIS
8543 key files with invalid SEQUENCE encoding.
8546 *) Add a document (doc/standards.txt) that list all kinds of standards
8547 and so on that are implemented in OpenSSL.
8550 *) Enhance c_rehash script. Old version would mishandle certificates
8551 with the same subject name hash and wouldn't handle CRLs at all.
8552 Added -fingerprint option to crl utility, to support new c_rehash
8556 *) Eliminate non-ANSI declarations in crypto.h and stack.h.
8559 *) Fix for SSL server purpose checking. Server checking was
8560 rejecting certificates which had extended key usage present
8561 but no ssl client purpose.
8562 [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>]
8564 *) Make PKCS#12 code work with no password. The PKCS#12 spec
8565 is a little unclear about how a blank password is handled.
8566 Since the password in encoded as a BMPString with terminating
8567 double NULL a zero length password would end up as just the
8568 double NULL. However no password at all is different and is
8569 handled differently in the PKCS#12 key generation code. NS
8570 treats a blank password as zero length. MSIE treats it as no
8571 password on export: but it will try both on import. We now do
8572 the same: PKCS12_parse() tries zero length and no password if
8573 the password is set to "" or NULL (NULL is now a valid password:
8574 it wasn't before) as does the pkcs12 application.
8577 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
8578 perror when PEM_read_bio_X509_REQ fails, the error message must
8579 be obtained from the error queue.
8582 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
8583 it in ERR_remove_state if appropriate, and change ERR_get_state
8584 accordingly to avoid race conditions (this is necessary because
8585 thread_hash is no longer constant once set).
8588 *) Bugfix for linux-elf makefile.one.
8591 *) RSA_get_default_method() will now cause a default
8592 RSA_METHOD to be chosen if one doesn't exist already.
8593 Previously this was only set during a call to RSA_new()
8594 or RSA_new_method(NULL) meaning it was possible for
8595 RSA_get_default_method() to return NULL.
8598 *) Added native name translation to the existing DSO code
8599 that will convert (if the flag to do so is set) filenames
8600 that are sufficiently small and have no path information
8601 into a canonical native form. Eg. "blah" converted to
8602 "libblah.so" or "blah.dll" etc.
8605 *) New function ERR_error_string_n(e, buf, len) which is like
8606 ERR_error_string(e, buf), but writes at most 'len' bytes
8607 including the 0 terminator. For ERR_error_string_n, 'buf'
8609 [Damien Miller <djm@mindrot.org>, Bodo Moeller]
8611 *) CONF library reworked to become more general. A new CONF
8612 configuration file reader "class" is implemented as well as a
8613 new functions (NCONF_*, for "New CONF") to handle it. The now
8614 old CONF_* functions are still there, but are reimplemented to
8615 work in terms of the new functions. Also, a set of functions
8616 to handle the internal storage of the configuration data is
8617 provided to make it easier to write new configuration file
8618 reader "classes" (I can definitely see something reading a
8619 configuration file in XML format, for example), called _CONF_*,
8620 or "the configuration storage API"...
8622 The new configuration file reading functions are:
8624 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
8625 NCONF_get_section, NCONF_get_string, NCONF_get_numbre
8627 NCONF_default, NCONF_WIN32
8629 NCONF_dump_fp, NCONF_dump_bio
8631 NCONF_default and NCONF_WIN32 are method (or "class") choosers,
8632 NCONF_new creates a new CONF object. This works in the same way
8633 as other interfaces in OpenSSL, like the BIO interface.
8634 NCONF_dump_* dump the internal storage of the configuration file,
8635 which is useful for debugging. All other functions take the same
8636 arguments as the old CONF_* functions wth the exception of the
8637 first that must be a `CONF *' instead of a `LHASH *'.
8639 To make it easer to use the new classes with the old CONF_* functions,
8640 the function CONF_set_default_method is provided.
8643 *) Add '-tls1' option to 'openssl ciphers', which was already
8644 mentioned in the documentation but had not been implemented.
8645 (This option is not yet really useful because even the additional
8646 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
8649 *) Initial DSO code added into libcrypto for letting OpenSSL (and
8650 OpenSSL-based applications) load shared libraries and bind to
8651 them in a portable way.
8652 [Geoff Thorpe, with contributions from Richard Levitte]
8654 Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
8656 *) Make sure _lrotl and _lrotr are only used with MSVC.
8658 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
8659 (the default implementation of RAND_status).
8661 *) Rename openssl x509 option '-crlext', which was added in 0.9.5,
8662 to '-clrext' (= clear extensions), as intended and documented.
8663 [Bodo Moeller; inconsistency pointed out by Michael Attili
8666 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length
8667 was larger than the MD block size.
8668 [Steve Henson, pointed out by Yost William <YostW@tce.com>]
8670 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
8671 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
8672 using the passed key: if the passed key was a private key the result
8673 of X509_print(), for example, would be to print out all the private key
8677 *) des_quad_cksum() byte order bug fix.
8678 [Ulf Möller, using the problem description in krb4-0.9.7, where
8679 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>]
8681 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
8683 [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>]
8685 *) For easily testing in shell scripts whether some command
8686 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
8687 returns with exit code 0 iff no command of the given name is available.
8688 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
8689 the output goes to stdout and nothing is printed to stderr.
8690 Additional arguments are always ignored.
8692 Since for each cipher there is a command of the same name,
8693 the 'no-cipher' compilation switches can be tested this way.
8695 ('openssl no-XXX' is not able to detect pseudo-commands such
8696 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
8699 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
8702 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
8703 is set; it will be thrown away anyway because each handshake creates
8705 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
8706 to parameters -- in previous versions (since OpenSSL 0.9.3) the
8707 'default key' from SSL_CTX_set_tmp_dh would always be lost, meaning
8708 you effectivly got SSL_OP_SINGLE_DH_USE when using this macro.
8711 *) New s_client option -ign_eof: EOF at stdin is ignored, and
8712 'Q' and 'R' lose their special meanings (quit/renegotiate).
8713 This is part of what -quiet does; unlike -quiet, -ign_eof
8714 does not suppress any output.
8717 *) Add compatibility options to the purpose and trust code. The
8718 purpose X509_PURPOSE_ANY is "any purpose" which automatically
8719 accepts a certificate or CA, this was the previous behaviour,
8720 with all the associated security issues.
8722 X509_TRUST_COMPAT is the old trust behaviour: only and
8723 automatically trust self signed roots in certificate store. A
8724 new trust setting X509_TRUST_DEFAULT is used to specify that
8725 a purpose has no associated trust setting and it should instead
8726 use the value in the default purpose.
8729 *) Fix the PKCS#8 DSA private key code so it decodes keys again
8730 and fix a memory leak.
8733 *) In util/mkerr.pl (which implements 'make errors'), preserve
8734 reason strings from the previous version of the .c file, as
8735 the default to have only downcase letters (and digits) in
8736 automatically generated reasons codes is not always appropriate.
8739 *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
8740 using strerror. Previously, ERR_reason_error_string() returned
8741 library names as reason strings for SYSerr; but SYSerr is a special
8742 case where small numbers are errno values, not library numbers.
8745 *) Add '-dsaparam' option to 'openssl dhparam' application. This
8746 converts DSA parameters into DH parameters. (When creating parameters,
8747 DSA_generate_parameters is used.)
8750 *) Include 'length' (recommended exponent length) in C code generated
8751 by 'openssl dhparam -C'.
8754 *) The second argument to set_label in perlasm was already being used
8755 so couldn't be used as a "file scope" flag. Moved to third argument
8759 *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
8760 instead of RAND_bytes for encryption IVs and salts.
8763 *) Include RAND_status() into RAND_METHOD instead of implementing
8764 it only for md_rand.c Otherwise replacing the PRNG by calling
8765 RAND_set_rand_method would be impossible.
8768 *) Don't let DSA_generate_key() enter an infinite loop if the random
8769 number generation fails.
8772 *) New 'rand' application for creating pseudo-random output.
8775 *) Added configuration support for Linux/IA64
8776 [Rolf Haberrecker <rolf@suse.de>]
8778 *) Assembler module support for Mingw32.
8781 *) Shared library support for HPUX (in shlib/).
8782 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous]
8784 *) Shared library support for Solaris gcc.
8785 [Lutz Behnke <behnke@trustcenter.de>]
8787 Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
8789 *) PKCS7_encrypt() was adding text MIME headers twice because they
8790 were added manually and by SMIME_crlf_copy().
8793 *) In bntest.c don't call BN_rand with zero bits argument.
8794 [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>]
8796 *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
8797 case was implemented. This caused BN_div_recp() to fail occasionally.
8800 *) Add an optional second argument to the set_label() in the perl
8801 assembly language builder. If this argument exists and is set
8802 to 1 it signals that the assembler should use a symbol whose
8803 scope is the entire file, not just the current function. This
8804 is needed with MASM which uses the format label:: for this scope.
8805 [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>]
8807 *) Change the ASN1 types so they are typedefs by default. Before
8808 almost all types were #define'd to ASN1_STRING which was causing
8809 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
8813 *) Change names of new functions to the new get1/get0 naming
8814 convention: After 'get1', the caller owns a reference count
8815 and has to call ..._free; 'get0' returns a pointer to some
8816 data structure without incrementing reference counters.
8817 (Some of the existing 'get' functions increment a reference
8818 counter, some don't.)
8819 Similarly, 'set1' and 'add1' functions increase reference
8820 counters or duplicate objects.
8823 *) Allow for the possibility of temp RSA key generation failure:
8824 the code used to assume it always worked and crashed on failure.
8827 *) Fix potential buffer overrun problem in BIO_printf().
8828 [Ulf Möller, using public domain code by Patrick Powell; problem
8829 pointed out by David Sacerdote <das33@cornell.edu>]
8831 *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions
8832 RAND_egd() and RAND_status(). In the command line application,
8833 the EGD socket can be specified like a seed file using RANDFILE
8837 *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
8838 Some CAs (e.g. Verisign) distribute certificates in this form.
8841 *) Remove the SSL_ALLOW_ADH compile option and set the default cipher
8842 list to exclude them. This means that no special compilation option
8843 is needed to use anonymous DH: it just needs to be included in the
8847 *) Change the EVP_MD_CTX_type macro so its meaning consistent with
8848 EVP_MD_type. The old functionality is available in a new macro called
8849 EVP_MD_md(). Change code that uses it and update docs.
8852 *) ..._ctrl functions now have corresponding ..._callback_ctrl functions
8853 where the 'void *' argument is replaced by a function pointer argument.
8854 Previously 'void *' was abused to point to functions, which works on
8855 many platforms, but is not correct. As these functions are usually
8856 called by macros defined in OpenSSL header files, most source code
8857 should work without changes.
8860 *) <openssl/opensslconf.h> (which is created by Configure) now contains
8861 sections with information on -D... compiler switches used for
8862 compiling the library so that applications can see them. To enable
8863 one of these sections, a pre-processor symbol OPENSSL_..._DEFINES
8864 must be defined. E.g.,
8865 #define OPENSSL_ALGORITHM_DEFINES
8866 #include <openssl/opensslconf.h>
8867 defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc.
8868 [Richard Levitte, Ulf and Bodo Möller]
8870 *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
8874 *) Change the 'other' type in certificate aux info to a STACK_OF
8875 X509_ALGOR. Although not an AlgorithmIdentifier as such it has
8876 the required ASN1 format: arbitrary types determined by an OID.
8879 *) Add some PEM_write_X509_REQ_NEW() functions and a command line
8880 argument to 'req'. This is not because the function is newer or
8881 better than others it just uses the work 'NEW' in the certificate
8882 request header lines. Some software needs this.
8885 *) Reorganise password command line arguments: now passwords can be
8886 obtained from various sources. Delete the PEM_cb function and make
8887 it the default behaviour: i.e. if the callback is NULL and the
8888 usrdata argument is not NULL interpret it as a null terminated pass
8889 phrase. If usrdata and the callback are NULL then the pass phrase
8890 is prompted for as usual.
8893 *) Add support for the Compaq Atalla crypto accelerator. If it is installed,
8894 the support is automatically enabled. The resulting binaries will
8895 autodetect the card and use it if present.
8896 [Ben Laurie and Compaq Inc.]
8898 *) Work around for Netscape hang bug. This sends certificate request
8899 and server done in one record. Since this is perfectly legal in the
8900 SSL/TLS protocol it isn't a "bug" option and is on by default. See
8901 the bugs/SSLv3 entry for more info.
8904 *) HP-UX tune-up: new unified configs, HP C compiler bug workaround.
8907 *) Add -rand argument to smime and pkcs12 applications and read/write
8911 *) New 'passwd' tool for crypt(3) and apr1 password hashes.
8914 *) Add command line password options to the remaining applications.
8917 *) Bug fix for BN_div_recp() for numerators with an even number of
8921 *) More tests in bntest.c, and changed test_bn output.
8924 *) ./config recognizes MacOS X now.
8927 *) Bug fix for BN_div() when the first words of num and divsor are
8928 equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0).
8931 *) Add support for various broken PKCS#8 formats, and command line
8932 options to produce them.
8935 *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
8936 get temporary BIGNUMs from a BN_CTX.
8939 *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
8943 *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and
8944 include a #define from the old name to the new. The original intent
8945 was that statically linked binaries could for example just call
8946 SSLeay_add_all_ciphers() to just add ciphers to the table and not
8947 link with digests. This never worked because SSLeay_add_all_digests()
8948 and SSLeay_add_all_ciphers() were in the same source file so calling
8949 one would link with the other. They are now in separate source files.
8952 *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
8955 *) Use a less unusual form of the Miller-Rabin primality test (it used
8956 a binary algorithm for exponentiation integrated into the Miller-Rabin
8957 loop, our standard modexp algorithms are faster).
8960 *) Support for the EBCDIC character set completed.
8961 [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>]
8963 *) Source code cleanups: use const where appropriate, eliminate casts,
8964 use void * instead of char * in lhash.
8967 *) Bugfix: ssl3_send_server_key_exchange was not restartable
8968 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
8969 this the server could overwrite ephemeral keys that the client
8973 *) Turn DSA_is_prime into a macro that calls BN_is_prime,
8974 using 50 iterations of the Rabin-Miller test.
8976 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
8977 iterations of the Rabin-Miller test as required by the appendix
8978 to FIPS PUB 186[-1]) instead of DSA_is_prime.
8979 As BN_is_prime_fasttest includes trial division, DSA parameter
8980 generation becomes much faster.
8982 This implies a change for the callback functions in DSA_is_prime
8983 and DSA_generate_parameters: The callback function is called once
8984 for each positive witness in the Rabin-Miller test, not just
8985 occasionally in the inner loop; and the parameters to the
8986 callback function now provide an iteration count for the outer
8987 loop rather than for the current invocation of the inner loop.
8988 DSA_generate_parameters additionally can call the callback
8989 function with an 'iteration count' of -1, meaning that a
8990 candidate has passed the trial division test (when q is generated
8991 from an application-provided seed, trial division is skipped).
8994 *) New function BN_is_prime_fasttest that optionally does trial
8995 division before starting the Rabin-Miller test and has
8996 an additional BN_CTX * argument (whereas BN_is_prime always
8997 has to allocate at least one BN_CTX).
8998 'callback(1, -1, cb_arg)' is called when a number has passed the
8999 trial division stage.
9002 *) Fix for bug in CRL encoding. The validity dates weren't being handled
9006 *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
9009 *) New function BN_pseudo_rand().
9012 *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
9013 bignum version of BN_from_montgomery() with the working code from
9014 SSLeay 0.9.0 (the word based version is faster anyway), and clean up
9018 *) Avoid a race condition in s2_clnt.c (function get_server_hello) that
9019 made it impossible to use the same SSL_SESSION data structure in
9020 SSL2 clients in multiple threads.
9023 *) The return value of RAND_load_file() no longer counts bytes obtained
9024 by stat(). RAND_load_file(..., -1) is new and uses the complete file
9025 to seed the PRNG (previously an explicit byte count was required).
9026 [Ulf Möller, Bodo Möller]
9028 *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
9029 used (char *) instead of (void *) and had casts all over the place.
9032 *) Make BN_generate_prime() return NULL on error if ret!=NULL.
9035 *) Retain source code compatibility for BN_prime_checks macro:
9036 BN_is_prime(..., BN_prime_checks, ...) now uses
9037 BN_prime_checks_for_size to determine the appropriate number of
9038 Rabin-Miller iterations.
9041 *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
9042 DH_CHECK_P_NOT_SAFE_PRIME.
9043 (Check if this is true? OpenPGP calls them "strong".)
9046 *) Merge the functionality of "dh" and "gendh" programs into a new program
9047 "dhparam". The old programs are retained for now but will handle DH keys
9048 (instead of parameters) in future.
9051 *) Make the ciphers, s_server and s_client programs check the return values
9052 when a new cipher list is set.
9055 *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
9056 ciphers. Before when the 56bit ciphers were enabled the sorting was
9059 The syntax for the cipher sorting has been extended to support sorting by
9060 cipher-strength (using the strength_bits hard coded in the tables).
9061 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
9063 Fix a bug in the cipher-command parser: when supplying a cipher command
9064 string with an "undefined" symbol (neither command nor alphanumeric
9065 [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now
9066 an error is flagged.
9068 Due to the strength-sorting extension, the code of the
9069 ssl_create_cipher_list() function was completely rearranged. I hope that
9070 the readability was also increased :-)
9071 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
9073 *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1
9074 for the first serial number and places 2 in the serial number file. This
9075 avoids problems when the root CA is created with serial number zero and
9076 the first user certificate has the same issuer name and serial number
9080 *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
9081 the new code. Add documentation for this stuff.
9084 *) Changes to X509_ATTRIBUTE utilities. These have been renamed from
9085 X509_*() to X509at_*() on the grounds that they don't handle X509
9086 structures and behave in an analogous way to the X509v3 functions:
9087 they shouldn't be called directly but wrapper functions should be used
9090 So we also now have some wrapper functions that call the X509at functions
9091 when passed certificate requests. (TO DO: similar things can be done with
9092 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
9093 things. Some of these need some d2i or i2d and print functionality
9094 because they handle more complex structures.)
9097 *) Add missing #ifndefs that caused missing symbols when building libssl
9098 as a shared library without RSA. Use #ifndef NO_SSL2 instead of
9099 NO_RSA in ssl/s2*.c.
9100 [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller]
9102 *) Precautions against using the PRNG uninitialized: RAND_bytes() now
9103 has a return value which indicates the quality of the random data
9104 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
9105 error queue. New function RAND_pseudo_bytes() generates output that is
9106 guaranteed to be unique but not unpredictable. RAND_add is like
9107 RAND_seed, but takes an extra argument for an entropy estimate
9108 (RAND_seed always assumes full entropy).
9111 *) Do more iterations of Rabin-Miller probable prime test (specifically,
9112 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
9113 instead of only 2 for all lengths; see BN_prime_checks_for_size definition
9114 in crypto/bn/bn_prime.c for the complete table). This guarantees a
9115 false-positive rate of at most 2^-80 for random input.
9118 *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
9121 *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
9122 in the 0.9.5 release), this returns the chain
9123 from an X509_CTX structure with a dup of the stack and all
9124 the X509 reference counts upped: so the stack will exist
9125 after X509_CTX_cleanup() has been called. Modify pkcs12.c
9128 Also make SSL_SESSION_print() print out the verify return
9132 *) Add manpage for the pkcs12 command. Also change the default
9133 behaviour so MAC iteration counts are used unless the new
9134 -nomaciter option is used. This improves file security and
9135 only older versions of MSIE (4.0 for example) need it.
9138 *) Honor the no-xxx Configure options when creating .DEF files.
9141 *) Add PKCS#10 attributes to field table: challengePassword,
9142 unstructuredName and unstructuredAddress. These are taken from
9143 draft PKCS#9 v2.0 but are compatible with v1.2 provided no
9144 international characters are used.
9146 More changes to X509_ATTRIBUTE code: allow the setting of types
9147 based on strings. Remove the 'loc' parameter when adding
9148 attributes because these will be a SET OF encoding which is sorted
9152 *) Initial changes to the 'req' utility to allow request generation
9153 automation. This will allow an application to just generate a template
9154 file containing all the field values and have req construct the
9157 Initial support for X509_ATTRIBUTE handling. Stacks of these are
9158 used all over the place including certificate requests and PKCS#7
9159 structures. They are currently handled manually where necessary with
9160 some primitive wrappers for PKCS#7. The new functions behave in a
9161 manner analogous to the X509 extension functions: they allow
9162 attributes to be looked up by NID and added.
9164 Later something similar to the X509V3 code would be desirable to
9165 automatically handle the encoding, decoding and printing of the
9166 more complex types. The string types like challengePassword can
9167 be handled by the string table functions.
9169 Also modified the multi byte string table handling. Now there is
9170 a 'global mask' which masks out certain types. The table itself
9171 can use the flag STABLE_NO_MASK to ignore the mask setting: this
9172 is useful when for example there is only one permissible type
9173 (as in countryName) and using the mask might result in no valid
9177 *) Clean up 'Finished' handling, and add functions SSL_get_finished and
9178 SSL_get_peer_finished to allow applications to obtain the latest
9179 Finished messages sent to the peer or expected from the peer,
9180 respectively. (SSL_get_peer_finished is usually the Finished message
9181 actually received from the peer, otherwise the protocol will be aborted.)
9183 As the Finished message are message digests of the complete handshake
9184 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
9185 be used for external authentication procedures when the authentication
9186 provided by SSL/TLS is not desired or is not enough.
9189 *) Enhanced support for Alpha Linux is added. Now ./config checks if
9190 the host supports BWX extension and if Compaq C is present on the
9191 $PATH. Just exploiting of the BWX extension results in 20-30%
9192 performance kick for some algorithms, e.g. DES and RC4 to mention
9193 a couple. Compaq C in turn generates ~20% faster code for MD5 and
9197 *) Add support for MS "fast SGC". This is arguably a violation of the
9198 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
9199 weak crypto and after checking the certificate is SGC a second one
9200 with strong crypto. MS SGC stops the first handshake after receiving
9201 the server certificate message and sends a second client hello. Since
9202 a server will typically do all the time consuming operations before
9203 expecting any further messages from the client (server key exchange
9204 is the most expensive) there is little difference between the two.
9206 To get OpenSSL to support MS SGC we have to permit a second client
9207 hello message after we have sent server done. In addition we have to
9208 reset the MAC if we do get this second client hello.
9211 *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide
9212 if a DER encoded private key is RSA or DSA traditional format. Changed
9213 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
9214 format DER encoded private key. Newer code should use PKCS#8 format which
9215 has the key type encoded in the ASN1 structure. Added DER private key
9216 support to pkcs8 application.
9219 *) SSL 3/TLS 1 servers now don't request certificates when an anonymous
9220 ciphersuites has been selected (as required by the SSL 3/TLS 1
9221 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
9222 is set, we interpret this as a request to violate the specification
9223 (the worst that can happen is a handshake failure, and 'correct'
9224 behaviour would result in a handshake failure anyway).
9227 *) In SSL_CTX_add_session, take into account that there might be multiple
9228 SSL_SESSION structures with the same session ID (e.g. when two threads
9229 concurrently obtain them from an external cache).
9230 The internal cache can handle only one SSL_SESSION with a given ID,
9231 so if there's a conflict, we now throw out the old one to achieve
9235 *) Add OIDs for idea and blowfish in CBC mode. This will allow both
9236 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
9237 some routines that use cipher OIDs: some ciphers do not have OIDs
9238 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
9242 *) Simplify the trust setting structure and code. Now we just have
9243 two sequences of OIDs for trusted and rejected settings. These will
9244 typically have values the same as the extended key usage extension
9245 and any application specific purposes.
9247 The trust checking code now has a default behaviour: it will just
9248 check for an object with the same NID as the passed id. Functions can
9249 be provided to override either the default behaviour or the behaviour
9250 for a given id. SSL client, server and email already have functions
9251 in place for compatibility: they check the NID and also return "trusted"
9252 if the certificate is self signed.
9255 *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the
9256 traditional format into an EVP_PKEY structure.
9259 *) Add a password callback function PEM_cb() which either prompts for
9260 a password if usr_data is NULL or otherwise assumes it is a null
9261 terminated password. Allow passwords to be passed on command line
9262 environment or config files in a few more utilities.
9265 *) Add a bunch of DER and PEM functions to handle PKCS#8 format private
9266 keys. Add some short names for PKCS#8 PBE algorithms and allow them
9267 to be specified on the command line for the pkcs8 and pkcs12 utilities.
9268 Update documentation.
9271 *) Support for ASN1 "NULL" type. This could be handled before by using
9272 ASN1_TYPE but there wasn't any function that would try to read a NULL
9273 and produce an error if it couldn't. For compatibility we also have
9274 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
9275 don't allocate anything because they don't need to.
9278 *) Initial support for MacOS is now provided. Examine INSTALL.MacOS
9280 [Andy Polyakov, Roy Woods <roy@centicsystems.ca>]
9282 *) Rebuild of the memory allocation routines used by OpenSSL code and
9283 possibly others as well. The purpose is to make an interface that
9284 provide hooks so anyone can build a separate set of allocation and
9285 deallocation routines to be used by OpenSSL, for example memory
9286 pool implementations, or something else, which was previously hard
9287 since Malloc(), Realloc() and Free() were defined as macros having
9288 the values malloc, realloc and free, respectively (except for Win32
9289 compilations). The same is provided for memory debugging code.
9290 OpenSSL already comes with functionality to find memory leaks, but
9291 this gives people a chance to debug other memory problems.
9293 With these changes, a new set of functions and macros have appeared:
9295 CRYPTO_set_mem_debug_functions() [F]
9296 CRYPTO_get_mem_debug_functions() [F]
9297 CRYPTO_dbg_set_options() [F]
9298 CRYPTO_dbg_get_options() [F]
9299 CRYPTO_malloc_debug_init() [M]
9301 The memory debug functions are NULL by default, unless the library
9302 is compiled with CRYPTO_MDEBUG or friends is defined. If someone
9303 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
9304 gives the standard debugging functions that come with OpenSSL) or
9305 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
9306 provided by the library user) must be used. When the standard
9307 debugging functions are used, CRYPTO_dbg_set_options can be used to
9308 request additional information:
9309 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
9310 the CRYPTO_MDEBUG_xxx macro when compiling the library.
9312 Also, things like CRYPTO_set_mem_functions will always give the
9313 expected result (the new set of functions is used for allocation
9314 and deallocation) at all times, regardless of platform and compiler
9317 To finish it up, some functions that were never use in any other
9318 way than through macros have a new API and new semantic:
9321 CRYPTO_dbg_realloc()
9324 All macros of value have retained their old syntax.
9325 [Richard Levitte and Bodo Moeller]
9327 *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
9328 ordering of SMIMECapabilities wasn't in "strength order" and there
9329 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
9333 *) Some ASN1 types with illegal zero length encoding (INTEGER,
9334 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
9335 [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson]
9337 *) Merge in my S/MIME library for OpenSSL. This provides a simple
9338 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
9339 functionality to handle multipart/signed properly) and a utility
9340 called 'smime' to call all this stuff. This is based on code I
9341 originally wrote for Celo who have kindly allowed it to be
9342 included in OpenSSL.
9345 *) Add variants des_set_key_checked and des_set_key_unchecked of
9346 des_set_key (aka des_key_sched). Global variable des_check_key
9347 decides which of these is called by des_set_key; this way
9348 des_check_key behaves as it always did, but applications and
9349 the library itself, which was buggy for des_check_key == 1,
9350 have a cleaner way to pick the version they need.
9353 *) New function PKCS12_newpass() which changes the password of a
9357 *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and
9358 dynamic mix. In both cases the ids can be used as an index into the
9359 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
9360 functions so they accept a list of the field values and the
9361 application doesn't need to directly manipulate the X509_TRUST
9365 *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
9369 *) Modify the way the V3 extension code looks up extensions. This now
9370 works in a similar way to the object code: we have some "standard"
9371 extensions in a static table which is searched with OBJ_bsearch()
9372 and the application can add dynamic ones if needed. The file
9373 crypto/x509v3/ext_dat.h now has the info: this file needs to be
9374 updated whenever a new extension is added to the core code and kept
9375 in ext_nid order. There is a simple program 'tabtest.c' which checks
9376 this. New extensions are not added too often so this file can readily
9377 be maintained manually.
9379 There are two big advantages in doing things this way. The extensions
9380 can be looked up immediately and no longer need to be "added" using
9381 X509V3_add_standard_extensions(): this function now does nothing.
9382 [Side note: I get *lots* of email saying the extension code doesn't
9383 work because people forget to call this function]
9384 Also no dynamic allocation is done unless new extensions are added:
9385 so if we don't add custom extensions there is no need to call
9386 X509V3_EXT_cleanup().
9389 *) Modify enc utility's salting as follows: make salting the default. Add a
9390 magic header, so unsalted files fail gracefully instead of just decrypting
9391 to garbage. This is because not salting is a big security hole, so people
9392 should be discouraged from doing it.
9395 *) Fixes and enhancements to the 'x509' utility. It allowed a message
9396 digest to be passed on the command line but it only used this
9397 parameter when signing a certificate. Modified so all relevant
9398 operations are affected by the digest parameter including the
9399 -fingerprint and -x509toreq options. Also -x509toreq choked if a
9400 DSA key was used because it didn't fix the digest.
9403 *) Initial certificate chain verify code. Currently tests the untrusted
9404 certificates for consistency with the verify purpose (which is set
9405 when the X509_STORE_CTX structure is set up) and checks the pathlength.
9407 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
9408 this is because it will reject chains with invalid extensions whereas
9409 every previous version of OpenSSL and SSLeay made no checks at all.
9411 Trust code: checks the root CA for the relevant trust settings. Trust
9412 settings have an initial value consistent with the verify purpose: e.g.
9413 if the verify purpose is for SSL client use it expects the CA to be
9414 trusted for SSL client use. However the default value can be changed to
9415 permit custom trust settings: one example of this would be to only trust
9416 certificates from a specific "secure" set of CAs.
9418 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
9419 which should be used for version portability: especially since the
9420 verify structure is likely to change more often now.
9422 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
9423 to set them. If not set then assume SSL clients will verify SSL servers
9426 Two new options to the verify program: -untrusted allows a set of
9427 untrusted certificates to be passed in and -purpose which sets the
9428 intended purpose of the certificate. If a purpose is set then the
9429 new chain verify code is used to check extension consistency.
9432 *) Support for the authority information access extension.
9435 *) Modify RSA and DSA PEM read routines to transparently handle
9436 PKCS#8 format private keys. New *_PUBKEY_* functions that handle
9437 public keys in a format compatible with certificate
9438 SubjectPublicKeyInfo structures. Unfortunately there were already
9439 functions called *_PublicKey_* which used various odd formats so
9440 these are retained for compatibility: however the DSA variants were
9441 never in a public release so they have been deleted. Changed dsa/rsa
9442 utilities to handle the new format: note no releases ever handled public
9443 keys so we should be OK.
9445 The primary motivation for this change is to avoid the same fiasco
9446 that dogs private keys: there are several incompatible private key
9447 formats some of which are standard and some OpenSSL specific and
9448 require various evil hacks to allow partial transparent handling and
9449 even then it doesn't work with DER formats. Given the option anything
9450 other than PKCS#8 should be dumped: but the other formats have to
9451 stay in the name of compatibility.
9453 With public keys and the benefit of hindsight one standard format
9454 is used which works with EVP_PKEY, RSA or DSA structures: though
9455 it clearly returns an error if you try to read the wrong kind of key.
9457 Added a -pubkey option to the 'x509' utility to output the public key.
9458 Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*()
9459 (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add
9460 EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*())
9461 that do the same as the EVP_PKEY_assign_*() except they up the
9462 reference count of the added key (they don't "swallow" the
9466 *) Fixes to crypto/x509/by_file.c the code to read in certificates and
9467 CRLs would fail if the file contained no certificates or no CRLs:
9468 added a new function to read in both types and return the number
9469 read: this means that if none are read it will be an error. The
9470 DER versions of the certificate and CRL reader would always fail
9471 because it isn't possible to mix certificates and CRLs in DER format
9472 without choking one or the other routine. Changed this to just read
9473 a certificate: this is the best we can do. Also modified the code
9474 in apps/verify.c to take notice of return codes: it was previously
9475 attempting to read in certificates from NULL pointers and ignoring
9476 any errors: this is one reason why the cert and CRL reader seemed
9477 to work. It doesn't check return codes from the default certificate
9478 routines: these may well fail if the certificates aren't installed.
9481 *) Code to support otherName option in GeneralName.
9484 *) First update to verify code. Change the verify utility
9485 so it warns if it is passed a self signed certificate:
9486 for consistency with the normal behaviour. X509_verify
9487 has been modified to it will now verify a self signed
9488 certificate if *exactly* the same certificate appears
9489 in the store: it was previously impossible to trust a
9490 single self signed certificate. This means that:
9491 openssl verify ss.pem
9492 now gives a warning about a self signed certificate but
9493 openssl verify -CAfile ss.pem ss.pem
9497 *) For servers, store verify_result in SSL_SESSION data structure
9498 (and add it to external session representation).
9499 This is needed when client certificate verifications fails,
9500 but an application-provided verification callback (set by
9501 SSL_CTX_set_cert_verify_callback) allows accepting the session
9502 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
9503 but returns 1): When the session is reused, we have to set
9504 ssl->verify_result to the appropriate error code to avoid
9506 [Bodo Moeller, problem pointed out by Lutz Jaenicke]
9508 *) Fix a bug in the new PKCS#7 code: it didn't consider the
9509 case in PKCS7_dataInit() where the signed PKCS7 structure
9510 didn't contain any existing data because it was being created.
9511 [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson]
9513 *) Add a salt to the key derivation routines in enc.c. This
9514 forms the first 8 bytes of the encrypted file. Also add a
9515 -S option to allow a salt to be input on the command line.
9518 *) New function X509_cmp(). Oddly enough there wasn't a function
9519 to compare two certificates. We do this by working out the SHA1
9520 hash and comparing that. X509_cmp() will be needed by the trust
9524 *) SSL_get1_session() is like SSL_get_session(), but increments
9525 the reference count in the SSL_SESSION returned.
9526 [Geoff Thorpe <geoff@eu.c2.net>]
9528 *) Fix for 'req': it was adding a null to request attributes.
9529 Also change the X509_LOOKUP and X509_INFO code to handle
9530 certificate auxiliary information.
9533 *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document
9537 *) Add the possibility to add extra information to the memory leak
9538 detecting output, to form tracebacks, showing from where each
9539 allocation was originated: CRYPTO_push_info("constant string") adds
9540 the string plus current file name and line number to a per-thread
9541 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
9542 is like calling CYRPTO_pop_info() until the stack is empty.
9543 Also updated memory leak detection code to be multi-thread-safe.
9546 *) Add options -text and -noout to pkcs7 utility and delete the
9547 encryption options which never did anything. Update docs.
9550 *) Add options to some of the utilities to allow the pass phrase
9551 to be included on either the command line (not recommended on
9552 OSes like Unix) or read from the environment. Update the
9553 manpages and fix a few bugs.
9556 *) Add a few manpages for some of the openssl commands.
9559 *) Fix the -revoke option in ca. It was freeing up memory twice,
9560 leaking and not finding already revoked certificates.
9563 *) Extensive changes to support certificate auxiliary information.
9564 This involves the use of X509_CERT_AUX structure and X509_AUX
9565 functions. An X509_AUX function such as PEM_read_X509_AUX()
9566 can still read in a certificate file in the usual way but it
9567 will also read in any additional "auxiliary information". By
9568 doing things this way a fair degree of compatibility can be
9569 retained: existing certificates can have this information added
9570 using the new 'x509' options.
9572 Current auxiliary information includes an "alias" and some trust
9573 settings. The trust settings will ultimately be used in enhanced
9574 certificate chain verification routines: currently a certificate
9575 can only be trusted if it is self signed and then it is trusted
9579 *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD).
9580 The problem was that one of the replacement routines had not been working
9581 since SSLeay releases. For now the offending routine has been replaced
9582 with non-optimised assembler. Even so, this now gives around 95%
9583 performance improvement for 1024 bit RSA signs.
9586 *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2
9587 handling. Most clients have the effective key size in bits equal to
9588 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
9589 A few however don't do this and instead use the size of the decrypted key
9590 to determine the RC2 key length and the AlgorithmIdentifier to determine
9591 the effective key length. In this case the effective key length can still
9592 be 40 bits but the key length can be 168 bits for example. This is fixed
9593 by manually forcing an RC2 key into the EVP_PKEY structure because the
9594 EVP code can't currently handle unusual RC2 key sizes: it always assumes
9595 the key length and effective key length are equal.
9598 *) Add a bunch of functions that should simplify the creation of
9599 X509_NAME structures. Now you should be able to do:
9600 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
9601 and have it automatically work out the correct field type and fill in
9602 the structures. The more adventurous can try:
9603 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
9604 and it will (hopefully) work out the correct multibyte encoding.
9607 *) Change the 'req' utility to use the new field handling and multibyte
9608 copy routines. Before the DN field creation was handled in an ad hoc
9609 way in req, ca, and x509 which was rather broken and didn't support
9610 BMPStrings or UTF8Strings. Since some software doesn't implement
9611 BMPStrings or UTF8Strings yet, they can be enabled using the config file
9612 using the dirstring_type option. See the new comment in the default
9613 openssl.cnf for more info.
9616 *) Make crypto/rand/md_rand.c more robust:
9617 - Assure unique random numbers after fork().
9618 - Make sure that concurrent threads access the global counter and
9619 md serializably so that we never lose entropy in them
9620 or use exactly the same state in multiple threads.
9621 Access to the large state is not always serializable because
9622 the additional locking could be a performance killer, and
9623 md should be large enough anyway.
9626 *) New file apps/app_rand.c with commonly needed functionality
9627 for handling the random seed file.
9629 Use the random seed file in some applications that previously did not:
9631 dsaparam -genkey (which also ignored its '-rand' option),
9634 x509 (when signing).
9635 Except on systems with /dev/urandom, it is crucial to have a random
9636 seed file at least for key creation, DSA signing, and for DH exchanges;
9637 for RSA signatures we could do without one.
9639 gendh and gendsa (unlike genrsa) used to read only the first byte
9640 of each file listed in the '-rand' option. The function as previously
9641 found in genrsa is now in app_rand.c and is used by all programs
9642 that support '-rand'.
9645 *) In RAND_write_file, use mode 0600 for creating files;
9646 don't just chmod when it may be too late.
9649 *) Report an error from X509_STORE_load_locations
9650 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
9653 *) New function ASN1_mbstring_copy() this copies a string in either
9654 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
9655 into an ASN1_STRING type. A mask of permissible types is passed
9656 and it chooses the "minimal" type to use or an error if not type
9660 *) Add function equivalents to the various macros in asn1.h. The old
9661 macros are retained with an M_ prefix. Code inside the library can
9662 use the M_ macros. External code (including the openssl utility)
9663 should *NOT* in order to be "shared library friendly".
9666 *) Add various functions that can check a certificate's extensions
9667 to see if it usable for various purposes such as SSL client,
9668 server or S/MIME and CAs of these types. This is currently
9669 VERY EXPERIMENTAL but will ultimately be used for certificate chain
9670 verification. Also added a -purpose flag to x509 utility to
9671 print out all the purposes.
9674 *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated
9678 *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search
9679 for, obtain and decode and extension and obtain its critical flag.
9680 This allows all the necessary extension code to be handled in a
9681 single function call.
9684 *) RC4 tune-up featuring 30-40% performance improvement on most RISC
9685 platforms. See crypto/rc4/rc4_enc.c for further details.
9688 *) New -noout option to asn1parse. This causes no output to be produced
9689 its main use is when combined with -strparse and -out to extract data
9690 from a file (which may not be in ASN.1 format).
9693 *) Fix for pkcs12 program. It was hashing an invalid certificate pointer
9694 when producing the local key id.
9695 [Richard Levitte <levitte@stacken.kth.se>]
9697 *) New option -dhparam in s_server. This allows a DH parameter file to be
9698 stated explicitly. If it is not stated then it tries the first server
9699 certificate file. The previous behaviour hard coded the filename
9703 *) Add -pubin and -pubout options to the rsa and dsa commands. These allow
9704 a public key to be input or output. For example:
9705 openssl rsa -in key.pem -pubout -out pubkey.pem
9706 Also added necessary DSA public key functions to handle this.
9709 *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
9710 in the message. This was handled by allowing
9711 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
9712 [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>]
9714 *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
9715 to the end of the strings whereas this didn't. This would cause problems
9716 if strings read with d2i_ASN1_bytes() were later modified.
9717 [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>]
9719 *) Fix for base64 decode bug. When a base64 bio reads only one line of
9720 data and it contains EOF it will end up returning an error. This is
9721 caused by input 46 bytes long. The cause is due to the way base64
9722 BIOs find the start of base64 encoded data. They do this by trying a
9723 trial decode on each line until they find one that works. When they
9724 do a flag is set and it starts again knowing it can pass all the
9725 data directly through the decoder. Unfortunately it doesn't reset
9726 the context it uses. This means that if EOF is reached an attempt
9727 is made to pass two EOFs through the context and this causes the
9728 resulting error. This can also cause other problems as well. As is
9729 usual with these problems it takes *ages* to find and the fix is
9730 trivial: move one line.
9731 [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ]
9733 *) Ugly workaround to get s_client and s_server working under Windows. The
9734 old code wouldn't work because it needed to select() on sockets and the
9735 tty (for keypresses and to see if data could be written). Win32 only
9736 supports select() on sockets so we select() with a 1s timeout on the
9737 sockets and then see if any characters are waiting to be read, if none
9738 are present then we retry, we also assume we can always write data to
9739 the tty. This isn't nice because the code then blocks until we've
9740 received a complete line of data and it is effectively polling the
9741 keyboard at 1s intervals: however it's quite a bit better than not
9742 working at all :-) A dedicated Windows application might handle this
9743 with an event loop for example.
9746 *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
9747 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
9748 will be called when RSA_sign() and RSA_verify() are used. This is useful
9749 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
9750 For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
9751 should *not* be used: RSA_sign() and RSA_verify() must be used instead.
9752 This necessitated the support of an extra signature type NID_md5_sha1
9753 for SSL signatures and modifications to the SSL library to use it instead
9754 of calling RSA_public_decrypt() and RSA_private_encrypt().
9757 *) Add new -verify -CAfile and -CApath options to the crl program, these
9758 will lookup a CRL issuers certificate and verify the signature in a
9759 similar way to the verify program. Tidy up the crl program so it
9760 no longer accesses structures directly. Make the ASN1 CRL parsing a bit
9761 less strict. It will now permit CRL extensions even if it is not
9762 a V2 CRL: this will allow it to tolerate some broken CRLs.
9765 *) Initialize all non-automatic variables each time one of the openssl
9766 sub-programs is started (this is necessary as they may be started
9767 multiple times from the "OpenSSL>" prompt).
9768 [Lennart Bang, Bodo Moeller]
9770 *) Preliminary compilation option RSA_NULL which disables RSA crypto without
9771 removing all other RSA functionality (this is what NO_RSA does). This
9772 is so (for example) those in the US can disable those operations covered
9773 by the RSA patent while allowing storage and parsing of RSA keys and RSA
9777 *) Non-copying interface to BIO pairs.
9778 (still largely untested)
9781 *) New function ANS1_tag2str() to convert an ASN1 tag to a descriptive
9782 ASCII string. This was handled independently in various places before.
9785 *) New functions UTF8_getc() and UTF8_putc() that parse and generate
9786 UTF8 strings a character at a time.
9789 *) Use client_version from client hello to select the protocol
9790 (s23_srvr.c) and for RSA client key exchange verification
9791 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
9794 *) Add various utility functions to handle SPKACs, these were previously
9795 handled by poking round in the structure internals. Added new function
9796 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
9797 print, verify and generate SPKACs. Based on an original idea from
9798 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
9801 *) RIPEMD160 is operational on all platforms and is back in 'make test'.
9804 *) Allow the config file extension section to be overwritten on the
9805 command line. Based on an original idea from Massimiliano Pala
9806 <madwolf@comune.modena.it>. The new option is called -extensions
9807 and can be applied to ca, req and x509. Also -reqexts to override
9808 the request extensions in req and -crlexts to override the crl extensions
9812 *) Add new feature to the SPKAC handling in ca. Now you can include
9813 the same field multiple times by preceding it by "XXXX." for example:
9816 this is the same syntax as used in the req config file.
9819 *) Allow certificate extensions to be added to certificate requests. These
9820 are specified in a 'req_extensions' option of the req section of the
9821 config file. They can be printed out with the -text option to req but
9822 are otherwise ignored at present.
9825 *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
9826 data read consists of only the final block it would not decrypted because
9827 EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
9828 A misplaced 'break' also meant the decrypted final block might not be
9829 copied until the next read.
9832 *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
9833 a few extra parameters to the DH structure: these will be useful if
9834 for example we want the value of 'q' or implement X9.42 DH.
9837 *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and
9838 provides hooks that allow the default DSA functions or functions on a
9839 "per key" basis to be replaced. This allows hardware acceleration and
9840 hardware key storage to be handled without major modification to the
9841 library. Also added low level modexp hooks and CRYPTO_EX structure and
9842 associated functions.
9845 *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
9846 as "read only": it can't be written to and the buffer it points to will
9847 not be freed. Reading from a read only BIO is much more efficient than
9848 a normal memory BIO. This was added because there are several times when
9849 an area of memory needs to be read from a BIO. The previous method was
9850 to create a memory BIO and write the data to it, this results in two
9851 copies of the data and an O(n^2) reading algorithm. There is a new
9852 function BIO_new_mem_buf() which creates a read only memory BIO from
9853 an area of memory. Also modified the PKCS#7 routines to use read only
9857 *) Bugfix: ssl23_get_client_hello did not work properly when called in
9858 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
9859 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
9860 but a retry condition occured while trying to read the rest.
9863 *) The PKCS7_ENC_CONTENT_new() function was setting the content type as
9864 NID_pkcs7_encrypted by default: this was wrong since this should almost
9865 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
9866 the encrypted data type: this is a more sensible place to put it and it
9867 allows the PKCS#12 code to be tidied up that duplicated this
9871 *) Changed obj_dat.pl script so it takes its input and output files on
9872 the command line. This should avoid shell escape redirection problems
9876 *) Initial support for certificate extension requests, these are included
9877 in things like Xenroll certificate requests. Included functions to allow
9878 extensions to be obtained and added.
9881 *) -crlf option to s_client and s_server for sending newlines as
9882 CRLF (as required by many protocols).
9885 Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
9887 *) Install libRSAglue.a when OpenSSL is built with RSAref.
9888 [Ralf S. Engelschall]
9890 *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency.
9891 [Andrija Antonijevic <TheAntony2@bigfoot.com>]
9893 *) Fix -startdate and -enddate (which was missing) arguments to 'ca'
9897 *) New function DSA_dup_DH, which duplicates DSA parameters/keys as
9898 DH parameters/keys (q is lost during that conversion, but the resulting
9899 DH parameters contain its length).
9901 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
9902 much faster than DH_generate_parameters (which creates parameters
9903 where p = 2*q + 1), and also the smaller q makes DH computations
9904 much more efficient (160-bit exponentiation instead of 1024-bit
9905 exponentiation); so this provides a convenient way to support DHE
9906 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
9907 utter importance to use
9908 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
9910 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
9911 when such DH parameters are used, because otherwise small subgroup
9912 attacks may become possible!
9915 *) Avoid memory leak in i2d_DHparams.
9918 *) Allow the -k option to be used more than once in the enc program:
9919 this allows the same encrypted message to be read by multiple recipients.
9922 *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
9923 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
9924 it will always use the numerical form of the OID, even if it has a short
9928 *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
9929 method only got called if p,q,dmp1,dmq1,iqmp components were present,
9930 otherwise bn_mod_exp was called. In the case of hardware keys for example
9931 no private key components need be present and it might store extra data
9932 in the RSA structure, which cannot be accessed from bn_mod_exp.
9933 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
9934 private key operations.
9937 *) Added support for SPARC Linux.
9940 *) pem_password_cb function type incompatibly changed from
9941 typedef int pem_password_cb(char *buf, int size, int rwflag);
9943 ....(char *buf, int size, int rwflag, void *userdata);
9944 so that applications can pass data to their callbacks:
9945 The PEM[_ASN1]_{read,write}... functions and macros now take an
9946 additional void * argument, which is just handed through whenever
9947 the password callback is called.
9948 [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller]
9950 New function SSL_CTX_set_default_passwd_cb_userdata.
9952 Compatibility note: As many C implementations push function arguments
9953 onto the stack in reverse order, the new library version is likely to
9954 interoperate with programs that have been compiled with the old
9955 pem_password_cb definition (PEM_whatever takes some data that
9956 happens to be on the stack as its last argument, and the callback
9957 just ignores this garbage); but there is no guarantee whatsoever that
9960 *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
9961 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
9962 problems not only on Windows, but also on some Unix platforms.
9963 To avoid problematic command lines, these definitions are now in an
9964 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
9965 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
9968 *) MIPS III/IV assembler module is reimplemented.
9971 *) More DES library cleanups: remove references to srand/rand and
9972 delete an unused file.
9975 *) Add support for the the free Netwide assembler (NASM) under Win32,
9976 since not many people have MASM (ml) and it can be hard to obtain.
9977 This is currently experimental but it seems to work OK and pass all
9978 the tests. Check out INSTALL.W32 for info.
9981 *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
9982 without temporary keys kept an extra copy of the server key,
9983 and connections with temporary keys did not free everything in case
9987 *) New function RSA_check_key and new openssl rsa option -check
9988 for verifying the consistency of RSA keys.
9989 [Ulf Moeller, Bodo Moeller]
9991 *) Various changes to make Win32 compile work:
9992 1. Casts to avoid "loss of data" warnings in p5_crpt2.c
9993 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
9994 comparison" warnings.
9995 3. Add sk_<TYPE>_sort to DEF file generator and do make update.
9998 *) Add a debugging option to PKCS#5 v2 key generation function: when
9999 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
10000 derived keys are printed to stderr.
10003 *) Copy the flags in ASN1_STRING_dup().
10004 [Roman E. Pavlov <pre@mo.msk.ru>]
10006 *) The x509 application mishandled signing requests containing DSA
10007 keys when the signing key was also DSA and the parameters didn't match.
10009 It was supposed to omit the parameters when they matched the signing key:
10010 the verifying software was then supposed to automatically use the CA's
10011 parameters if they were absent from the end user certificate.
10013 Omitting parameters is no longer recommended. The test was also
10014 the wrong way round! This was probably due to unusual behaviour in
10015 EVP_cmp_parameters() which returns 1 if the parameters match.
10016 This meant that parameters were omitted when they *didn't* match and
10017 the certificate was useless. Certificates signed with 'ca' didn't have
10019 [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>]
10021 *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
10022 The interface is as follows:
10023 Applications can use
10024 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
10025 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
10026 "off" is now the default.
10027 The library internally uses
10028 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
10029 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
10030 to disable memory-checking temporarily.
10032 Some inconsistent states that previously were possible (and were
10033 even the default) are now avoided.
10035 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
10036 with each memory chunk allocated; this is occasionally more helpful
10037 than just having a counter.
10039 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
10041 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
10045 *) Introduce "mode" for SSL structures (with defaults in SSL_CTX),
10046 which largely parallels "options", but is for changing API behaviour,
10047 whereas "options" are about protocol behaviour.
10048 Initial "mode" flags are:
10050 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when
10051 a single record has been written.
10052 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write
10053 retries use the same buffer location.
10054 (But all of the contents must be
10058 *) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options
10061 *) Fix problems with no-hmac etc.
10062 [Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>]
10064 *) New functions RSA_get_default_method(), RSA_set_method() and
10065 RSA_get_method(). These allows replacement of RSA_METHODs without having
10066 to mess around with the internals of an RSA structure.
10069 *) Fix memory leaks in DSA_do_sign and DSA_is_prime.
10070 Also really enable memory leak checks in openssl.c and in some
10072 [Chad C. Mulligan, Bodo Moeller]
10074 *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
10075 up the length of negative integers. This has now been simplified to just
10076 store the length when it is first determined and use it later, rather
10077 than trying to keep track of where data is copied and updating it to
10079 [Steve Henson, reported by Brien Wheeler
10080 <bwheeler@authentica-security.com>]
10082 *) Add a new function PKCS7_signatureVerify. This allows the verification
10083 of a PKCS#7 signature but with the signing certificate passed to the
10084 function itself. This contrasts with PKCS7_dataVerify which assumes the
10085 certificate is present in the PKCS#7 structure. This isn't always the
10086 case: certificates can be omitted from a PKCS#7 structure and be
10087 distributed by "out of band" means (such as a certificate database).
10090 *) Complete the PEM_* macros with DECLARE_PEM versions to replace the
10091 function prototypes in pem.h, also change util/mkdef.pl to add the
10092 necessary function names.
10095 *) mk1mf.pl (used by Windows builds) did not properly read the
10096 options set by Configure in the top level Makefile, and Configure
10097 was not even able to write more than one option correctly.
10098 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
10101 *) New functions CONF_load_bio() and CONF_load_fp() to allow a config
10102 file to be loaded from a BIO or FILE pointer. The BIO version will
10103 for example allow memory BIOs to contain config info.
10106 *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
10107 Whoever hopes to achieve shared-library compatibility across versions
10108 must use this, not the compile-time macro.
10109 (Exercise 0.9.4: Which is the minimum library version required by
10111 Note: All this applies only to multi-threaded programs, others don't
10115 *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests
10116 through a BIO pair triggered the default case, i.e.
10117 SSLerr(...,SSL_R_UNKNOWN_STATE).
10120 *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
10121 can use the SSL library even if none of the specific BIOs is
10125 *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
10126 for the encoded length.
10127 [Jeon KyoungHo <khjeon@sds.samsung.co.kr>]
10129 *) Add initial documentation of the X509V3 functions.
10132 *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and
10133 PEM_write_bio_PKCS8PrivateKey() that are equivalent to
10134 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
10135 secure PKCS#8 private key format with a high iteration count.
10138 *) Fix determination of Perl interpreter: A perl or perl5
10139 _directory_ in $PATH was also accepted as the interpreter.
10140 [Ralf S. Engelschall]
10142 *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking
10143 wrong with it but it was very old and did things like calling
10144 PEM_ASN1_read() directly and used MD5 for the hash not to mention some
10145 unusual formatting.
10148 *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed
10149 to use the new extension code.
10152 *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
10153 with macros. This should make it easier to change their form, add extra
10154 arguments etc. Fix a few PEM prototypes which didn't have cipher as a
10158 *) Add to configuration table a new entry that can specify an alternative
10159 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
10160 according to Mark Crispin <MRC@Panda.COM>.
10164 *) DES CBC did not update the IV. Weird.
10167 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
10168 Changing the behaviour of the former might break existing programs --
10169 where IV updating is needed, des_ncbc_encrypt can be used.
10172 *) When bntest is run from "make test" it drives bc to check its
10173 calculations, as well as internally checking them. If an internal check
10174 fails, it needs to cause bc to give a non-zero result or make test carries
10175 on without noticing the failure. Fixed.
10178 *) DES library cleanups.
10181 *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
10182 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
10183 ciphers. NOTE: although the key derivation function has been verified
10184 against some published test vectors it has not been extensively tested
10185 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
10189 *) Instead of "mkdir -p", which is not fully portable, use new
10190 Perl script "util/mkdir-p.pl".
10193 *) Rewrite the way password based encryption (PBE) is handled. It used to
10194 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
10195 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
10196 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
10197 the 'parameter' field of the AlgorithmIdentifier is passed to the
10198 underlying key generation function so it must do its own ASN1 parsing.
10199 This has also changed the EVP_PBE_CipherInit() function which now has a
10200 'parameter' argument instead of literal salt and iteration count values
10201 and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
10204 *) Support for PKCS#5 v1.5 compatible password based encryption algorithms
10205 and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
10206 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
10207 KEY" because this clashed with PKCS#8 unencrypted string. Since this
10208 value was just used as a "magic string" and not used directly its
10209 value doesn't matter.
10212 *) Introduce some semblance of const correctness to BN. Shame C doesn't
10216 *) "linux-sparc64" configuration (ultrapenguin).
10217 [Ray Miller <ray.miller@oucs.ox.ac.uk>]
10218 "linux-sparc" configuration.
10219 [Christian Forster <fo@hawo.stw.uni-erlangen.de>]
10221 *) config now generates no-xxx options for missing ciphers.
10224 *) Support the EBCDIC character set (work in progress).
10225 File ebcdic.c not yet included because it has a different license.
10226 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
10228 *) Support BS2000/OSD-POSIX.
10229 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
10231 *) Make callbacks for key generation use void * instead of char *.
10234 *) Make S/MIME samples compile (not yet tested).
10237 *) Additional typesafe stacks.
10240 *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
10244 Changes between 0.9.3 and 0.9.3a [29 May 1999]
10246 *) New configuration variant "sco5-gcc".
10248 *) Updated some demos.
10249 [Sean O Riordain, Wade Scholine]
10251 *) Add missing BIO_free at exit of pkcs12 application.
10254 *) Fix memory leak in conf.c.
10257 *) Updates for Win32 to assembler version of MD5.
10260 *) Set #! path to perl in apps/der_chop to where we found it
10261 instead of using a fixed path.
10264 *) SHA library changes for irix64-mips4-cc.
10267 *) Improvements for VMS support.
10271 Changes between 0.9.2b and 0.9.3 [24 May 1999]
10273 *) Bignum library bug fix. IRIX 6 passes "make test" now!
10274 This also avoids the problems with SC4.2 and unpatched SC5.
10275 [Andy Polyakov <appro@fy.chalmers.se>]
10277 *) New functions sk_num, sk_value and sk_set to replace the previous macros.
10278 These are required because of the typesafe stack would otherwise break
10279 existing code. If old code used a structure member which used to be STACK
10280 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
10281 sk_num or sk_value it would produce an error because the num, data members
10282 are not present in STACK_OF. Now it just produces a warning. sk_set
10283 replaces the old method of assigning a value to sk_value
10284 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
10285 that does this will no longer work (and should use sk_set instead) but
10286 this could be regarded as a "questionable" behaviour anyway.
10289 *) Fix most of the other PKCS#7 bugs. The "experimental" code can now
10290 correctly handle encrypted S/MIME data.
10293 *) Change type of various DES function arguments from des_cblock
10294 (which means, in function argument declarations, pointer to char)
10295 to des_cblock * (meaning pointer to array with 8 char elements),
10296 which allows the compiler to do more typechecking; it was like
10297 that back in SSLeay, but with lots of ugly casts.
10299 Introduce new type const_des_cblock.
10302 *) Reorganise the PKCS#7 library and get rid of some of the more obvious
10303 problems: find RecipientInfo structure that matches recipient certificate
10304 and initialise the ASN1 structures properly based on passed cipher.
10307 *) Belatedly make the BN tests actually check the results.
10310 *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
10311 to and from BNs: it was completely broken. New compilation option
10312 NEG_PUBKEY_BUG to allow for some broken certificates that encode public
10313 key elements as negative integers.
10316 *) Reorganize and speed up MD5.
10317 [Andy Polyakov <appro@fy.chalmers.se>]
10320 [Richard Levitte <richard@levitte.org>]
10322 *) New option -out to asn1parse to allow the parsed structure to be
10323 output to a file. This is most useful when combined with the -strparse
10324 option to examine the output of things like OCTET STRINGS.
10327 *) Make SSL library a little more fool-proof by not requiring any longer
10328 that SSL_set_{accept,connect}_state be called before
10329 SSL_{accept,connect} may be used (SSL_set_..._state is omitted
10330 in many applications because usually everything *appeared* to work as
10331 intended anyway -- now it really works as intended).
10334 *) Move openssl.cnf out of lib/.
10337 *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall
10338 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
10339 -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+
10340 [Ralf S. Engelschall]
10342 *) Various fixes to the EVP and PKCS#7 code. It may now be able to
10343 handle PKCS#7 enveloped data properly.
10344 [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve]
10346 *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
10347 copying pointers. The cert_st handling is changed by this in
10348 various ways (and thus what used to be known as ctx->default_cert
10349 is now called ctx->cert, since we don't resort to s->ctx->[default_]cert
10350 any longer when s->cert does not give us what we need).
10351 ssl_cert_instantiate becomes obsolete by this change.
10352 As soon as we've got the new code right (possibly it already is?),
10353 we have solved a couple of bugs of the earlier code where s->cert
10354 was used as if it could not have been shared with other SSL structures.
10356 Note that using the SSL API in certain dirty ways now will result
10357 in different behaviour than observed with earlier library versions:
10358 Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx)
10359 does not influence s as it used to.
10361 In order to clean up things more thoroughly, inside SSL_SESSION
10362 we don't use CERT any longer, but a new structure SESS_CERT
10363 that holds per-session data (if available); currently, this is
10364 the peer's certificate chain and, for clients, the server's certificate
10365 and temporary key. CERT holds only those values that can have
10366 meaningful defaults in an SSL_CTX.
10369 *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
10370 from the internal representation. Various PKCS#7 fixes: remove some
10371 evil casts and set the enc_dig_alg field properly based on the signing
10375 *) Allow PKCS#12 password to be set from the command line or the
10376 environment. Let 'ca' get its config file name from the environment
10377 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
10381 *) Allow certificate policies extension to use an IA5STRING for the
10382 organization field. This is contrary to the PKIX definition but
10383 VeriSign uses it and IE5 only recognises this form. Document 'x509'
10387 *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
10388 without disallowing inline assembler and the like for non-pedantic builds.
10391 *) Support Borland C++ builder.
10392 [Janez Jere <jj@void.si>, modified by Ulf Möller]
10394 *) Support Mingw32.
10397 *) SHA-1 cleanups and performance enhancements.
10398 [Andy Polyakov <appro@fy.chalmers.se>]
10400 *) Sparc v8plus assembler for the bignum library.
10401 [Andy Polyakov <appro@fy.chalmers.se>]
10403 *) Accept any -xxx and +xxx compiler options in Configure.
10406 *) Update HPUX configuration.
10409 *) Add missing sk_<type>_unshift() function to safestack.h
10410 [Ralf S. Engelschall]
10412 *) New function SSL_CTX_use_certificate_chain_file that sets the
10413 "extra_cert"s in addition to the certificate. (This makes sense
10414 only for "PEM" format files, as chains as a whole are not
10418 *) Support verify_depth from the SSL API.
10419 x509_vfy.c had what can be considered an off-by-one-error:
10420 Its depth (which was not part of the external interface)
10421 was actually counting the number of certificates in a chain;
10422 now it really counts the depth.
10425 *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
10426 instead of X509err, which often resulted in confusing error
10427 messages since the error codes are not globally unique
10428 (e.g. an alleged error in ssl3_accept when a certificate
10429 didn't match the private key).
10431 *) New function SSL_CTX_set_session_id_context that allows to set a default
10432 value (so that you don't need SSL_set_session_id_context for each
10433 connection using the SSL_CTX).
10436 *) OAEP decoding bug fix.
10439 *) Support INSTALL_PREFIX for package builders, as proposed by
10443 *) New Configure options "threads" and "no-threads". For systems
10444 where the proper compiler options are known (currently Solaris
10445 and Linux), "threads" is the default.
10448 *) New script util/mklink.pl as a faster substitute for util/mklink.sh.
10451 *) Install various scripts to $(OPENSSLDIR)/misc, not to
10452 $(INSTALLTOP)/bin -- they shouldn't clutter directories
10453 such as /usr/local/bin.
10456 *) "make linux-shared" to build shared libraries.
10457 [Niels Poppe <niels@netbox.org>]
10459 *) New Configure option no-<cipher> (rsa, idea, rc5, ...).
10462 *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
10463 extension adding in x509 utility.
10466 *) Remove NOPROTO sections and error code comments.
10469 *) Partial rewrite of the DEF file generator to now parse the ANSI
10473 *) New Configure options --prefix=DIR and --openssldir=DIR.
10476 *) Complete rewrite of the error code script(s). It is all now handled
10477 by one script at the top level which handles error code gathering,
10478 header rewriting and C source file generation. It should be much better
10479 than the old method: it now uses a modified version of Ulf's parser to
10480 read the ANSI prototypes in all header files (thus the old K&R definitions
10481 aren't needed for error creation any more) and do a better job of
10482 translating function codes into names. The old 'ASN1 error code imbedded
10483 in a comment' is no longer necessary and it doesn't use .err files which
10484 have now been deleted. Also the error code call doesn't have to appear all
10485 on one line (which resulted in some large lines...).
10488 *) Change #include filenames from <foo.h> to <openssl/foo.h>.
10491 *) Change behaviour of ssl2_read when facing length-0 packets: Don't return
10492 0 (which usually indicates a closed connection), but continue reading.
10495 *) Fix some race conditions.
10498 *) Add support for CRL distribution points extension. Add Certificate
10499 Policies and CRL distribution points documentation.
10502 *) Move the autogenerated header file parts to crypto/opensslconf.h.
10505 *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
10506 8 of keying material. Merlin has also confirmed interop with this fix
10507 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
10508 [Merlin Hughes <merlin@baltimore.ie>]
10510 *) Fix lots of warnings.
10511 [Richard Levitte <levitte@stacken.kth.se>]
10513 *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
10514 the directory spec didn't end with a LIST_SEPARATOR_CHAR.
10515 [Richard Levitte <levitte@stacken.kth.se>]
10517 *) Fix problems with sizeof(long) == 8.
10518 [Andy Polyakov <appro@fy.chalmers.se>]
10520 *) Change functions to ANSI C.
10523 *) Fix typos in error codes.
10524 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller]
10526 *) Remove defunct assembler files from Configure.
10529 *) SPARC v8 assembler BIGNUM implementation.
10530 [Andy Polyakov <appro@fy.chalmers.se>]
10532 *) Support for Certificate Policies extension: both print and set.
10533 Various additions to support the r2i method this uses.
10536 *) A lot of constification, and fix a bug in X509_NAME_oneline() that could
10537 return a const string when you are expecting an allocated buffer.
10540 *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
10541 types DirectoryString and DisplayText.
10544 *) Add code to allow r2i extensions to access the configuration database,
10545 add an LHASH database driver and add several ctx helper functions.
10548 *) Fix an evil bug in bn_expand2() which caused various BN functions to
10549 fail when they extended the size of a BIGNUM.
10552 *) Various utility functions to handle SXNet extension. Modify mkdef.pl to
10553 support typesafe stack.
10556 *) Fix typo in SSL_[gs]et_options().
10557 [Nils Frostberg <nils@medcom.se>]
10559 *) Delete various functions and files that belonged to the (now obsolete)
10560 old X509V3 handling code.
10563 *) New Configure option "rsaref".
10566 *) Don't auto-generate pem.h.
10569 *) Introduce type-safe ASN.1 SETs.
10572 *) Convert various additional casted stacks to type-safe STACK_OF() variants.
10573 [Ben Laurie, Ralf S. Engelschall, Steve Henson]
10575 *) Introduce type-safe STACKs. This will almost certainly break lots of code
10576 that links with OpenSSL (well at least cause lots of warnings), but fear
10577 not: the conversion is trivial, and it eliminates loads of evil casts. A
10578 few STACKed things have been converted already. Feel free to convert more.
10579 In the fullness of time, I'll do away with the STACK type altogether.
10582 *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate
10583 specified in <certfile> by updating the entry in the index.txt file.
10584 This way one no longer has to edit the index.txt file manually for
10585 revoking a certificate. The -revoke option does the gory details now.
10586 [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall]
10588 *) Fix `openssl crl -noout -text' combination where `-noout' killed the
10589 `-text' option at all and this way the `-noout -text' combination was
10590 inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'.
10591 [Ralf S. Engelschall]
10593 *) Make sure a corresponding plain text error message exists for the
10594 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
10595 verify callback function determined that a certificate was revoked.
10596 [Ralf S. Engelschall]
10598 *) Bugfix: In test/testenc, don't test "openssl <cipher>" for
10599 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test
10600 all available cipers including rc5, which was forgotten until now.
10601 In order to let the testing shell script know which algorithms
10602 are available, a new (up to now undocumented) command
10603 "openssl list-cipher-commands" is used.
10606 *) Bugfix: s_client occasionally would sleep in select() when
10607 it should have checked SSL_pending() first.
10610 *) New functions DSA_do_sign and DSA_do_verify to provide access to
10611 the raw DSA values prior to ASN.1 encoding.
10614 *) Tweaks to Configure
10615 [Niels Poppe <niels@netbox.org>]
10617 *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
10621 *) New variables $(RANLIB) and $(PERL) in the Makefiles.
10624 *) New config option to avoid instructions that are illegal on the 80386.
10625 The default code is faster, but requires at least a 486.
10628 *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
10629 SSL2_SERVER_VERSION (not used at all) macros, which are now the
10630 same as SSL2_VERSION anyway.
10633 *) New "-showcerts" option for s_client.
10636 *) Still more PKCS#12 integration. Add pkcs12 application to openssl
10637 application. Various cleanups and fixes.
10640 *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
10641 modify error routines to work internally. Add error codes and PBE init
10642 to library startup routines.
10645 *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and
10646 packing functions to asn1 and evp. Changed function names and error
10647 codes along the way.
10650 *) PKCS12 integration: and so it begins... First of several patches to
10651 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
10652 objects to objects.h
10655 *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1
10656 and display support for Thawte strong extranet extension.
10659 *) Add LinuxPPC support.
10660 [Jeff Dubrule <igor@pobox.org>]
10662 *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
10663 bn_div_words in alpha.s.
10664 [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie]
10666 *) Make sure the RSA OAEP test is skipped under -DRSAref because
10667 OAEP isn't supported when OpenSSL is built with RSAref.
10668 [Ulf Moeller <ulf@fitug.de>]
10670 *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
10671 so they no longer are missing under -DNOPROTO.
10672 [Soren S. Jorvang <soren@t.dk>]
10675 Changes between 0.9.1c and 0.9.2b [22 Mar 1999]
10677 *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
10678 doesn't work when the session is reused. Coming soon!
10681 *) Fix a security hole, that allows sessions to be reused in the wrong
10682 context thus bypassing client cert protection! All software that uses
10683 client certs and session caches in multiple contexts NEEDS PATCHING to
10684 allow session reuse! A fuller solution is in the works.
10685 [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)]
10687 *) Some more source tree cleanups (removed obsolete files
10688 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
10689 permission on "config" script to be executable) and a fix for the INSTALL
10691 [Ulf Moeller <ulf@fitug.de>]
10693 *) Remove some legacy and erroneous uses of malloc, free instead of
10695 [Lennart Bang <lob@netstream.se>, with minor changes by Steve]
10697 *) Make rsa_oaep_test return non-zero on error.
10698 [Ulf Moeller <ulf@fitug.de>]
10700 *) Add support for native Solaris shared libraries. Configure
10701 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
10702 if someone would make that last step automatic.
10703 [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>]
10705 *) ctx_size was not built with the right compiler during "make links". Fixed.
10708 *) Change the meaning of 'ALL' in the cipher list. It now means "everything
10709 except NULL ciphers". This means the default cipher list will no longer
10710 enable NULL ciphers. They need to be specifically enabled e.g. with
10711 the string "DEFAULT:eNULL".
10714 *) Fix to RSA private encryption routines: if p < q then it would
10715 occasionally produce an invalid result. This will only happen with
10716 externally generated keys because OpenSSL (and SSLeay) ensure p > q.
10719 *) Be less restrictive and allow also `perl util/perlpath.pl
10720 /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin',
10721 because this way one can also use an interpreter named `perl5' (which is
10722 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
10723 installed as `perl').
10724 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
10726 *) Let util/clean-depend.pl work also with older Perl 5.00x versions.
10727 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
10729 *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
10730 advapi32.lib to Win32 build and change the pem test comparison
10731 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
10732 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
10733 and crypto/des/ede_cbcm_enc.c.
10736 *) DES quad checksum was broken on big-endian architectures. Fixed.
10739 *) Comment out two functions in bio.h that aren't implemented. Fix up the
10740 Win32 test batch file so it (might) work again. The Win32 test batch file
10741 is horrible: I feel ill....
10744 *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
10745 in e_os.h. Audit of header files to check ANSI and non ANSI
10746 sections: 10 functions were absent from non ANSI section and not exported
10747 from Windows DLLs. Fixed up libeay.num for new functions.
10750 *) Make `openssl version' output lines consistent.
10751 [Ralf S. Engelschall]
10753 *) Fix Win32 symbol export lists for BIO functions: Added
10754 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
10755 to ms/libeay{16,32}.def.
10756 [Ralf S. Engelschall]
10758 *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
10759 fine under Unix and passes some trivial tests I've now added. But the
10760 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
10761 added to make sure no one expects that this stuff really works in the
10762 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources
10763 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
10765 [Ralf S. Engelschall]
10767 *) Fix the generation of two part addresses in perl.
10768 [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie]
10770 *) Add config entry for Linux on MIPS.
10771 [John Tobey <jtobey@channel1.com>]
10773 *) Make links whenever Configure is run, unless we are on Windoze.
10776 *) Permit extensions to be added to CRLs using crl_section in openssl.cnf.
10777 Currently only issuerAltName and AuthorityKeyIdentifier make any sense
10781 *) Add a useful kludge to allow package maintainers to specify compiler and
10782 other platforms details on the command line without having to patch the
10783 Configure script everytime: One now can use ``perl Configure
10784 <id>:<details>'', i.e. platform ids are allowed to have details appended
10785 to them (separated by colons). This is treated as there would be a static
10786 pre-configured entry in Configure's %table under key <id> with value
10787 <details> and ``perl Configure <id>'' is called. So, when you want to
10788 perform a quick test-compile under FreeBSD 3.1 with pgcc and without
10789 assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"''
10790 now, which overrides the FreeBSD-elf entry on-the-fly.
10791 [Ralf S. Engelschall]
10793 *) Disable new TLS1 ciphersuites by default: they aren't official yet.
10796 *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
10797 on the `perl Configure ...' command line. This way one can compile
10798 OpenSSL libraries with Position Independent Code (PIC) which is needed
10799 for linking it into DSOs.
10800 [Ralf S. Engelschall]
10802 *) Remarkably, export ciphers were totally broken and no-one had noticed!
10806 *) Cleaned up the LICENSE document: The official contact for any license
10807 questions now is the OpenSSL core team under openssl-core@openssl.org.
10808 And add a paragraph about the dual-license situation to make sure people
10809 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
10810 to the OpenSSL toolkit.
10811 [Ralf S. Engelschall]
10813 *) General source tree makefile cleanups: Made `making xxx in yyy...'
10814 display consistent in the source tree and replaced `/bin/rm' by `rm'.
10815 Additionally cleaned up the `make links' target: Remove unnecessary
10816 semicolons, subsequent redundant removes, inline point.sh into mklink.sh
10817 to speed processing and no longer clutter the display with confusing
10818 stuff. Instead only the actually done links are displayed.
10819 [Ralf S. Engelschall]
10821 *) Permit null encryption ciphersuites, used for authentication only. It used
10822 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
10823 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
10827 *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
10828 signed attributes when verifying signatures (this would break them),
10829 the detached data encoding was wrong and public keys obtained using
10830 X509_get_pubkey() weren't freed.
10833 *) Add text documentation for the BUFFER functions. Also added a work around
10834 to a Win95 console bug. This was triggered by the password read stuff: the
10835 last character typed gets carried over to the next fread(). If you were
10836 generating a new cert request using 'req' for example then the last
10837 character of the passphrase would be CR which would then enter the first
10841 *) Added the new `Includes OpenSSL Cryptography Software' button as
10842 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
10843 button and can be used by applications based on OpenSSL to show the
10844 relationship to the OpenSSL project.
10845 [Ralf S. Engelschall]
10847 *) Remove confusing variables in function signatures in files
10848 ssl/ssl_lib.c and ssl/ssl.h.
10849 [Lennart Bong <lob@kulthea.stacken.kth.se>]
10851 *) Don't install bss_file.c under PREFIX/include/
10852 [Lennart Bong <lob@kulthea.stacken.kth.se>]
10854 *) Get the Win32 compile working again. Modify mkdef.pl so it can handle
10855 functions that return function pointers and has support for NT specific
10856 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
10857 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
10858 unsigned to signed types: this was killing the Win32 compile.
10861 *) Add new certificate file to stack functions,
10862 SSL_add_dir_cert_subjects_to_stack() and
10863 SSL_add_file_cert_subjects_to_stack(). These largely supplant
10864 SSL_load_client_CA_file(), and can be used to add multiple certs easily
10865 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
10866 This means that Apache-SSL and similar packages don't have to mess around
10867 to add as many CAs as they want to the preferred list.
10870 *) Experiment with doxygen documentation. Currently only partially applied to
10872 See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with
10873 openssl.doxy as the configuration file.
10876 *) Get rid of remaining C++-style comments which strict C compilers hate.
10877 [Ralf S. Engelschall, pointed out by Carlos Amengual]
10879 *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
10880 compiled in by default: it has problems with large keys.
10883 *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
10884 DH private keys and/or callback functions which directly correspond to
10885 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
10886 is needed for applications which have to configure certificates on a
10887 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
10889 For the RSA certificate situation is makes no difference, but
10890 for the DSA certificate situation this fixes the "no shared cipher"
10891 problem where the OpenSSL cipher selection procedure failed because the
10892 temporary keys were not overtaken from the context and the API provided
10893 no way to reconfigure them.
10894 The new functions now let applications reconfigure the stuff and they
10895 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
10896 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new
10897 non-public-API function ssl_cert_instantiate() is used as a helper
10898 function and also to reduce code redundancy inside ssl_rsa.c.
10899 [Ralf S. Engelschall]
10901 *) Move s_server -dcert and -dkey options out of the undocumented feature
10902 area because they are useful for the DSA situation and should be
10903 recognized by the users.
10904 [Ralf S. Engelschall]
10906 *) Fix the cipher decision scheme for export ciphers: the export bits are
10907 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
10908 SSL_EXP_MASK. So, the original variable has to be used instead of the
10909 already masked variable.
10910 [Richard Levitte <levitte@stacken.kth.se>]
10912 *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c
10913 [Richard Levitte <levitte@stacken.kth.se>]
10915 *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
10916 from `int' to `unsigned int' because it's a length and initialized by
10917 EVP_DigestFinal() which expects an `unsigned int *'.
10918 [Richard Levitte <levitte@stacken.kth.se>]
10920 *) Don't hard-code path to Perl interpreter on shebang line of Configure
10921 script. Instead use the usual Shell->Perl transition trick.
10922 [Ralf S. Engelschall]
10924 *) Make `openssl x509 -noout -modulus' functional also for DSA certificates
10925 (in addition to RSA certificates) to match the behaviour of `openssl dsa
10926 -noout -modulus' as it's already the case for `openssl rsa -noout
10927 -modulus'. For RSA the -modulus is the real "modulus" while for DSA
10928 currently the public key is printed (a decision which was already done by
10929 `openssl dsa -modulus' in the past) which serves a similar purpose.
10930 Additionally the NO_RSA no longer completely removes the whole -modulus
10931 option; it now only avoids using the RSA stuff. Same applies to NO_DSA
10933 [Ralf S. Engelschall]
10935 *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
10936 BIO. See the source (crypto/evp/bio_ok.c) for more info.
10937 [Arne Ansper <arne@ats.cyber.ee>]
10939 *) Dump the old yucky req code that tried (and failed) to allow raw OIDs
10940 to be added. Now both 'req' and 'ca' can use new objects defined in the
10944 *) Add cool BIO that does syslog (or event log on NT).
10945 [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie]
10947 *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
10948 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
10949 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
10950 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
10953 *) Add preliminary config info for new extension code.
10956 *) Make RSA_NO_PADDING really use no padding.
10957 [Ulf Moeller <ulf@fitug.de>]
10959 *) Generate errors when private/public key check is done.
10962 *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
10963 for some CRL extensions and new objects added.
10966 *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private
10967 key usage extension and fuller support for authority key id.
10970 *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
10971 padding method for RSA, which is recommended for new applications in PKCS
10972 #1 v2.0 (RFC 2437, October 1998).
10973 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
10974 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
10975 against Bleichbacher's attack on RSA.
10976 [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
10979 *) Updates to the new SSL compression code
10980 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
10982 *) Fix so that the version number in the master secret, when passed
10983 via RSA, checks that if TLS was proposed, but we roll back to SSLv3
10984 (because the server will not accept higher), that the version number
10985 is 0x03,0x01, not 0x03,0x00
10986 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
10988 *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
10989 leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
10990 in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
10993 *) Support for RAW extensions where an arbitrary extension can be
10994 created by including its DER encoding. See apps/openssl.cnf for
10998 *) Make sure latest Perl versions don't interpret some generated C array
10999 code as Perl array code in the crypto/err/err_genc.pl script.
11000 [Lars Weber <3weber@informatik.uni-hamburg.de>]
11002 *) Modify ms/do_ms.bat to not generate assembly language makefiles since
11003 not many people have the assembler. Various Win32 compilation fixes and
11004 update to the INSTALL.W32 file with (hopefully) more accurate Win32
11005 build instructions.
11008 *) Modify configure script 'Configure' to automatically create crypto/date.h
11009 file under Win32 and also build pem.h from pem.org. New script
11010 util/mkfiles.pl to create the MINFO file on environments that can't do a
11011 'make files': perl util/mkfiles.pl >MINFO should work.
11014 *) Major rework of DES function declarations, in the pursuit of correctness
11015 and purity. As a result, many evil casts evaporated, and some weirdness,
11016 too. You may find this causes warnings in your code. Zapping your evil
11017 casts will probably fix them. Mostly.
11020 *) Fix for a typo in asn1.h. Bug fix to object creation script
11021 obj_dat.pl. It considered a zero in an object definition to mean
11022 "end of object": none of the objects in objects.h have any zeros
11023 so it wasn't spotted.
11024 [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>]
11026 *) Add support for Triple DES Cipher Block Chaining with Output Feedback
11027 Masking (CBCM). In the absence of test vectors, the best I have been able
11028 to do is check that the decrypt undoes the encrypt, so far. Send me test
11029 vectors if you have them.
11032 *) Correct calculation of key length for export ciphers (too much space was
11033 allocated for null ciphers). This has not been tested!
11036 *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage
11037 message is now correct (it understands "crypto" and "ssl" on its
11038 command line). There is also now an "update" option. This will update
11039 the util/ssleay.num and util/libeay.num files with any new functions.
11041 perl util/mkdef.pl crypto ssl update
11042 it will update them.
11045 *) Overhauled the Perl interface (perl/*):
11046 - ported BN stuff to OpenSSL's different BN library
11047 - made the perl/ source tree CVS-aware
11048 - renamed the package from SSLeay to OpenSSL (the files still contain
11049 their history because I've copied them in the repository)
11050 - removed obsolete files (the test scripts will be replaced
11051 by better Test::Harness variants in the future)
11052 [Ralf S. Engelschall]
11054 *) First cut for a very conservative source tree cleanup:
11055 1. merge various obsolete readme texts into doc/ssleay.txt
11056 where we collect the old documents and readme texts.
11057 2. remove the first part of files where I'm already sure that we no
11058 longer need them because of three reasons: either they are just temporary
11059 files which were left by Eric or they are preserved original files where
11060 I've verified that the diff is also available in the CVS via "cvs diff
11061 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
11062 the crypto/md/ stuff).
11063 [Ralf S. Engelschall]
11065 *) More extension code. Incomplete support for subject and issuer alt
11066 name, issuer and authority key id. Change the i2v function parameters
11067 and add an extra 'crl' parameter in the X509V3_CTX structure: guess
11068 what that's for :-) Fix to ASN1 macro which messed up
11069 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
11072 *) Preliminary support for ENUMERATED type. This is largely copied from the
11076 *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
11077 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
11079 *) Make sure `make rehash' target really finds the `openssl' program.
11080 [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
11082 *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
11083 like to hear about it if this slows down other processors.
11086 *) Add CygWin32 platform information to Configure script.
11087 [Alan Batie <batie@aahz.jf.intel.com>]
11089 *) Fixed ms/32all.bat script: `no_asm' -> `no-asm'
11090 [Rainer W. Gerling <gerling@mpg-gv.mpg.de>]
11092 *) New program nseq to manipulate netscape certificate sequences
11095 *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
11099 *) Fixes to BN code. Previously the default was to define BN_RECURSION
11100 but the BN code had some problems that would cause failures when
11101 doing certificate verification and some other functions.
11102 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
11104 *) Add ASN1 and PEM code to support netscape certificate sequences.
11107 *) Add ASN1 and PEM code to support netscape certificate sequences.
11110 *) Add several PKIX and private extended key usage OIDs.
11113 *) Modify the 'ca' program to handle the new extension code. Modify
11114 openssl.cnf for new extension format, add comments.
11117 *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
11118 and add a sample to openssl.cnf so req -x509 now adds appropriate
11122 *) Continued X509 V3 changes. Add to other makefiles, integrate with the
11123 error code, add initial support to X509_print() and x509 application.
11126 *) Takes a deep breath and start adding X509 V3 extension support code. Add
11127 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
11128 stuff is currently isolated and isn't even compiled yet.
11131 *) Continuing patches for GeneralizedTime. Fix up certificate and CRL
11132 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
11133 Removed the versions check from X509 routines when loading extensions:
11134 this allows certain broken certificates that don't set the version
11135 properly to be processed.
11138 *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
11139 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
11140 can still be regenerated with "make depend".
11143 *) Spelling mistake in C version of CAST-128.
11144 [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>]
11146 *) Changes to the error generation code. The perl script err-code.pl
11147 now reads in the old error codes and retains the old numbers, only
11148 adding new ones if necessary. It also only changes the .err files if new
11149 codes are added. The makefiles have been modified to only insert errors
11150 when needed (to avoid needlessly modifying header files). This is done
11151 by only inserting errors if the .err file is newer than the auto generated
11152 C file. To rebuild all the error codes from scratch (the old behaviour)
11153 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
11154 or delete all the .err files.
11157 *) CAST-128 was incorrectly implemented for short keys. The C version has
11158 been fixed, but is untested. The assembler versions are also fixed, but
11159 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
11160 to regenerate it if needed.
11161 [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
11162 Hagino <itojun@kame.net>]
11164 *) File was opened incorrectly in randfile.c.
11165 [Ulf Möller <ulf@fitug.de>]
11167 *) Beginning of support for GeneralizedTime. d2i, i2d, check and print
11168 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
11169 GeneralizedTime. ASN1_TIME is the proper type used in certificates et
11170 al: it's just almost always a UTCTime. Note this patch adds new error
11171 codes so do a "make errors" if there are problems.
11174 *) Correct Linux 1 recognition in config.
11175 [Ulf Möller <ulf@fitug.de>]
11177 *) Remove pointless MD5 hash when using DSA keys in ca.
11178 [Anonymous <nobody@replay.com>]
11180 *) Generate an error if given an empty string as a cert directory. Also
11181 generate an error if handed NULL (previously returned 0 to indicate an
11182 error, but didn't set one).
11183 [Ben Laurie, reported by Anonymous <nobody@replay.com>]
11185 *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
11188 *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
11189 parameters. This was causing a warning which killed off the Win32 compile.
11192 *) Remove C++ style comments from crypto/bn/bn_local.h.
11193 [Neil Costigan <neil.costigan@celocom.com>]
11195 *) The function OBJ_txt2nid was broken. It was supposed to return a nid
11196 based on a text string, looking up short and long names and finally
11197 "dot" format. The "dot" format stuff didn't work. Added new function
11198 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
11199 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
11200 OID is not part of the table.
11203 *) Add prototypes to X509 lookup/verify methods, fixing a bug in
11204 X509_LOOKUP_by_alias().
11207 *) Sort openssl functions by name.
11210 *) Get the gendsa program working (hopefully) and add it to app list. Remove
11211 encryption from sample DSA keys (in case anyone is interested the password
11215 *) Make _all_ *_free functions accept a NULL pointer.
11216 [Frans Heymans <fheymans@isaserver.be>]
11218 *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use
11220 [Anonymous <nobody@replay.com>]
11222 *) s_server should send the CAfile as acceptable CAs, not its own cert.
11223 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
11225 *) Don't blow it for numeric -newkey arguments to apps/req.
11226 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
11228 *) Temp key "for export" tests were wrong in s3_srvr.c.
11229 [Anonymous <nobody@replay.com>]
11231 *) Add prototype for temp key callback functions
11232 SSL_CTX_set_tmp_{rsa,dh}_callback().
11235 *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
11236 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
11239 *) X509_name_add_entry() freed the wrong thing after an error.
11240 [Arne Ansper <arne@ats.cyber.ee>]
11242 *) rsa_eay.c would attempt to free a NULL context.
11243 [Arne Ansper <arne@ats.cyber.ee>]
11245 *) BIO_s_socket() had a broken should_retry() on Windoze.
11246 [Arne Ansper <arne@ats.cyber.ee>]
11248 *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
11249 [Arne Ansper <arne@ats.cyber.ee>]
11251 *) Make sure the already existing X509_STORE->depth variable is initialized
11252 in X509_STORE_new(), but document the fact that this variable is still
11253 unused in the certificate verification process.
11254 [Ralf S. Engelschall]
11256 *) Fix the various library and apps files to free up pkeys obtained from
11257 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
11260 *) Fix reference counting in X509_PUBKEY_get(). This makes
11261 demos/maurice/example2.c work, amongst others, probably.
11262 [Steve Henson and Ben Laurie]
11264 *) First cut of a cleanup for apps/. First the `ssleay' program is now named
11265 `openssl' and second, the shortcut symlinks for the `openssl <command>'
11266 are no longer created. This way we have a single and consistent command
11267 line interface `openssl <command>', similar to `cvs <command>'.
11268 [Ralf S. Engelschall, Paul Sutton and Ben Laurie]
11270 *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
11271 BIT STRING wrapper always have zero unused bits.
11274 *) Add CA.pl, perl version of CA.sh, add extended key usage OID.
11277 *) Make the top-level INSTALL documentation easier to understand.
11280 *) Makefiles updated to exit if an error occurs in a sub-directory
11281 make (including if user presses ^C) [Paul Sutton]
11283 *) Make Montgomery context stuff explicit in RSA data structure.
11286 *) Fix build order of pem and err to allow for generated pem.h.
11289 *) Fix renumbering bug in X509_NAME_delete_entry().
11292 *) Enhanced the err-ins.pl script so it makes the error library number
11293 global and can add a library name. This is needed for external ASN1 and
11294 other error libraries.
11297 *) Fixed sk_insert which never worked properly.
11300 *) Fix ASN1 macros so they can handle indefinite length constructed
11301 EXPLICIT tags. Some non standard certificates use these: they can now
11305 *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
11306 into a single doc/ssleay.txt bundle. This way the information is still
11307 preserved but no longer messes up this directory. Now it's new room for
11308 the new set of documentation files.
11309 [Ralf S. Engelschall]
11311 *) SETs were incorrectly DER encoded. This was a major pain, because they
11312 shared code with SEQUENCEs, which aren't coded the same. This means that
11313 almost everything to do with SETs or SEQUENCEs has either changed name or
11314 number of arguments.
11315 [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>]
11317 *) Fix test data to work with the above.
11320 *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
11321 was already fixed by Eric for 0.9.1 it seems.
11322 [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>]
11324 *) Autodetect FreeBSD3.
11327 *) Fix various bugs in Configure. This affects the following platforms:
11331 unixware-2.0-pentium
11335 *) Eliminate generated files from CVS. Reorder tests to regenerate files
11336 before they are needed.
11339 *) Generate Makefile.ssl from Makefile.org (to keep CVS happy).
11343 Changes between 0.9.1b and 0.9.1c [23-Dec-1998]
11345 *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
11346 changed SSLeay to OpenSSL in version strings.
11347 [Ralf S. Engelschall]
11349 *) Some fixups to the top-level documents.
11352 *) Fixed the nasty bug where rsaref.h was not found under compile-time
11353 because the symlink to include/ was missing.
11354 [Ralf S. Engelschall]
11356 *) Incorporated the popular no-RSA/DSA-only patches
11357 which allow to compile a RSA-free SSLeay.
11358 [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall]
11360 *) Fixed nasty rehash problem under `make -f Makefile.ssl links'
11361 when "ssleay" is still not found.
11362 [Ralf S. Engelschall]
11364 *) Added more platforms to Configure: Cray T3E, HPUX 11,
11365 [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>]
11367 *) Updated the README file.
11368 [Ralf S. Engelschall]
11370 *) Added various .cvsignore files in the CVS repository subdirs
11371 to make a "cvs update" really silent.
11372 [Ralf S. Engelschall]
11374 *) Recompiled the error-definition header files and added
11375 missing symbols to the Win32 linker tables.
11376 [Ralf S. Engelschall]
11378 *) Cleaned up the top-level documents;
11379 o new files: CHANGES and LICENSE
11380 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
11381 o merged COPYRIGHT into LICENSE
11382 o removed obsolete TODO file
11383 o renamed MICROSOFT to INSTALL.W32
11384 [Ralf S. Engelschall]
11386 *) Removed dummy files from the 0.9.1b source tree:
11387 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
11388 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
11389 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
11390 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
11391 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
11392 [Ralf S. Engelschall]
11394 *) Added various platform portability fixes.
11397 *) The Genesis of the OpenSSL rpject:
11398 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
11399 Young and Tim J. Hudson created while they were working for C2Net until
11401 [The OpenSSL Project]
11404 Changes between 0.9.0b and 0.9.1b [not released]
11406 *) Updated a few CA certificates under certs/
11409 *) Changed some BIGNUM api stuff.
11412 *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
11413 DGUX x86, Linux Alpha, etc.
11416 *) New COMP library [crypto/comp/] for SSL Record Layer Compression:
11417 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
11421 *) Add -strparse option to asn1pars program which parses nested
11423 [Dr Stephen Henson <shenson@bigfoot.com>]
11425 *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
11428 *) DSA fix for "ca" program.
11431 *) Added "-genkey" option to "dsaparam" program.
11434 *) Added RIPE MD160 (rmd160) message digest.
11437 *) Added -a (all) option to "ssleay version" command.
11440 *) Added PLATFORM define which is the id given to Configure.
11443 *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
11446 *) Extended the ASN.1 parser routines.
11449 *) Extended BIO routines to support REUSEADDR, seek, tell, etc.
11452 *) Added a BN_CTX to the BN library.
11455 *) Fixed the weak key values in DES library
11458 *) Changed API in EVP library for cipher aliases.
11461 *) Added support for RC2/64bit cipher.
11464 *) Converted the lhash library to the crypto/mem.c functions.
11467 *) Added more recognized ASN.1 object ids.
11470 *) Added more RSA padding checks for SSL/TLS.
11473 *) Added BIO proxy/filter functionality.
11476 *) Added extra_certs to SSL_CTX which can be used
11477 send extra CA certificates to the client in the CA cert chain sending
11478 process. It can be configured with SSL_CTX_add_extra_chain_cert().
11481 *) Now Fortezza is denied in the authentication phase because
11482 this is key exchange mechanism is not supported by SSLeay at all.
11485 *) Additional PKCS1 checks.
11488 *) Support the string "TLSv1" for all TLS v1 ciphers.
11491 *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
11492 ex_data index of the SSL context in the X509_STORE_CTX ex_data.
11495 *) Fixed a few memory leaks.
11498 *) Fixed various code and comment typos.
11501 *) A minor bug in ssl/s3_clnt.c where there would always be 4 0
11502 bytes sent in the client random.
11503 [Edward Bishop <ebishop@spyglass.com>]