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. This also means that the
58 "-no_ecdhe" option has been removed from s_server.
61 *) SSL_{CTX}_set_tmp_ecdh() which can set 1 EC curve now internally calls
62 SSL_{CTX_}set1_curves() which can set a list.
65 *) Remove support for SSL_{CTX_}set_tmp_ecdh_callback(). You should set the
66 curve you want to support using SSL_{CTX_}set1_curves().
69 *) State machine rewrite. The state machine code has been significantly
70 refactored in order to remove much duplication of code and solve issues
71 with the old code (see ssl/statem/README for further details). This change
72 does have some associated API changes. Notably the SSL_state() function
73 has been removed and replaced by SSL_get_state which now returns an
74 "OSSL_HANDSHAKE_STATE" instead of an int. SSL_set_state() has been removed
75 altogether. The previous handshake states defined in ssl.h and ssl3.h have
79 *) All instances of the string "ssleay" in the public API were replaced
80 with OpenSSL (case-matching; e.g., OPENSSL_VERSION for #define's)
81 Some error codes related to internal RSA_eay API's were renamed.
84 *) The demo files in crypto/threads were moved to demo/threads.
87 *) Removed obsolete engines: 4758cca, aep, atalla, cswift, nuron, gmp,
89 [Matt Caswell, Rich Salz]
91 *) New ASN.1 embed macro.
93 New ASN.1 macro ASN1_EMBED. This is the same as ASN1_SIMPLE except the
94 structure is not allocated: it is part of the parent. That is instead of
102 This reduces memory fragmentation and make it impossible to accidentally
103 set a mandatory field to NULL.
105 This currently only works for some fields specifically a SEQUENCE, CHOICE,
106 or ASN1_STRING type which is part of a parent SEQUENCE. Since it is
107 equivalent to ASN1_SIMPLE it cannot be tagged, OPTIONAL, SET OF or
111 *) Remove EVP_CHECK_DES_KEY, a compile-time option that never compiled.
114 *) Removed DES and RC4 ciphersuites from DEFAULT. Also removed RC2 although
115 in 1.0.2 EXPORT was already removed and the only RC2 ciphersuite is also
116 an EXPORT one. COMPLEMENTOFDEFAULT has been updated accordingly to add
117 DES and RC4 ciphersuites.
120 *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
121 This changes the decoding behaviour for some invalid messages,
122 though the change is mostly in the more lenient direction, and
123 legacy behaviour is preserved as much as possible.
126 *) Fix no-stdio build.
127 [ David Woodhouse <David.Woodhouse@intel.com> and also
128 Ivan Nestlerode <ivan.nestlerode@sonos.com> ]
130 *) New testing framework
131 The testing framework has been largely rewritten and is now using
132 perl and the perl modules Test::Harness and an extended variant of
133 Test::More called OpenSSL::Test to do its work. All test scripts in
134 test/ have been rewritten into test recipes, and all direct calls to
135 executables in test/Makefile have become individual recipes using the
136 simplified testing OpenSSL::Test::Simple.
138 For documentation on our testing modules, do:
140 perldoc test/testlib/OpenSSL/Test/Simple.pm
141 perldoc test/testlib/OpenSSL/Test.pm
145 *) In DSA_generate_parameters_ex, if the provided seed is too short,
147 [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>]
149 *) Rewrite PSK to support ECDHE_PSK, DHE_PSK and RSA_PSK. Add ciphersuites
150 from RFC4279, RFC4785, RFC5487, RFC5489.
152 Thanks to Christian J. Dietrich and Giuseppe D'Angelo for the
153 original RSA_PSK patch.
156 *) Dropped support for the SSL3_FLAGS_DELAY_CLIENT_FINISHED flag. This SSLeay
157 era flag was never set throughout the codebase (only read). Also removed
158 SSL3_FLAGS_POP_BUFFER which was only used if
159 SSL3_FLAGS_DELAY_CLIENT_FINISHED was also set.
162 *) Changed the default name options in the "ca", "crl", "req" and "x509"
163 to be "oneline" instead of "compat".
166 *) Remove SSL_OP_TLS_BLOCK_PADDING_BUG. This is SSLeay legacy, we're
167 not aware of clients that still exhibit this bug, and the workaround
168 hasn't been working properly for a while.
171 *) The return type of BIO_number_read() and BIO_number_written() as well as
172 the corresponding num_read and num_write members in the BIO structure has
173 changed from unsigned long to uint64_t. On platforms where an unsigned
174 long is 32 bits (e.g. Windows) these counters could overflow if >4Gb is
178 *) Given the pervasive nature of TLS extensions it is inadvisable to run
179 OpenSSL without support for them. It also means that maintaining
180 the OPENSSL_NO_TLSEXT option within the code is very invasive (and probably
181 not well tested). Therefore the OPENSSL_NO_TLSEXT option has been removed.
184 *) Removed support for the two export grade static DH ciphersuites
185 EXP-DH-RSA-DES-CBC-SHA and EXP-DH-DSS-DES-CBC-SHA. These two ciphersuites
186 were newly added (along with a number of other static DH ciphersuites) to
187 1.0.2. However the two export ones have *never* worked since they were
188 introduced. It seems strange in any case to be adding new export
189 ciphersuites, and given "logjam" it also does not seem correct to fix them.
192 *) Version negotiation has been rewritten. In particular SSLv23_method(),
193 SSLv23_client_method() and SSLv23_server_method() have been deprecated,
194 and turned into macros which simply call the new preferred function names
195 TLS_method(), TLS_client_method() and TLS_server_method(). All new code
196 should use the new names instead. Also as part of this change the ssl23.h
197 header file has been removed.
200 *) Support for Kerberos ciphersuites in TLS (RFC2712) has been removed. This
201 code and the associated standard is no longer considered fit-for-purpose.
204 *) RT2547 was closed. When generating a private key, try to make the
205 output file readable only by the owner. This behavior change might
206 be noticeable when interacting with other software.
208 *) Documented all exdata functions. Added CRYPTO_free_ex_index.
212 *) Added HTTP GET support to the ocsp command.
215 *) Changed default digest for the dgst and enc commands from MD5 to
219 *) RAND_pseudo_bytes has been deprecated. Users should use RAND_bytes instead.
222 *) Added support for TLS extended master secret from
223 draft-ietf-tls-session-hash-03.txt. Thanks for Alfredo Pironti for an
224 initial patch which was a great help during development.
227 *) All libssl internal structures have been removed from the public header
228 files, and the OPENSSL_NO_SSL_INTERN option has been removed (since it is
229 now redundant). Users should not attempt to access internal structures
230 directly. Instead they should use the provided API functions.
233 *) config has been changed so that by default OPENSSL_NO_DEPRECATED is used.
234 Access to deprecated functions can be re-enabled by running config with
235 "enable-deprecated". In addition applications wishing to use deprecated
236 functions must define OPENSSL_USE_DEPRECATED. Note that this new behaviour
237 will, by default, disable some transitive includes that previously existed
238 in the header files (e.g. ec.h will no longer, by default, include bn.h)
241 *) Added support for OCB mode. OpenSSL has been granted a patent license
242 compatible with the OpenSSL license for use of OCB. Details are available
243 at https://www.openssl.org/source/OCB-patent-grant-OpenSSL.pdf. Support
244 for OCB can be removed by calling config with no-ocb.
247 *) SSLv2 support has been removed. It still supports receiving a SSLv2
248 compatible client hello.
251 *) Increased the minimal RSA keysize from 256 to 512 bits [Rich Salz],
252 done while fixing the error code for the key-too-small case.
253 [Annie Yousar <a.yousar@informatik.hu-berlin.de>]
255 *) CA.sh has been removmed; use CA.pl instead.
258 *) Removed old DES API.
261 *) Remove various unsupported platforms:
267 Sinix/ReliantUNIX RM400
272 16-bit platforms such as WIN16
275 *) Clean up OPENSSL_NO_xxx #define's
276 Use setbuf() and remove OPENSSL_NO_SETVBUF_IONBF
277 Rename OPENSSL_SYSNAME_xxx to OPENSSL_SYS_xxx
278 OPENSSL_NO_EC{DH,DSA} merged into OPENSSL_NO_EC
279 OPENSSL_NO_RIPEMD160, OPENSSL_NO_RIPEMD merged into OPENSSL_NO_RMD160
280 OPENSSL_NO_FP_API merged into OPENSSL_NO_STDIO
281 Remove OPENSSL_NO_BIO OPENSSL_NO_BUFFER OPENSSL_NO_CHAIN_VERIFY
282 OPENSSL_NO_EVP OPENSSL_NO_FIPS_ERR OPENSSL_NO_HASH_COMP
283 OPENSSL_NO_LHASH OPENSSL_NO_OBJECT OPENSSL_NO_SPEED OPENSSL_NO_STACK
284 OPENSSL_NO_X509 OPENSSL_NO_X509_VERIFY
285 Remove MS_STATIC; it's a relic from platforms <32 bits.
288 *) Cleaned up dead code
289 Remove all but one '#ifdef undef' which is to be looked at.
292 *) Clean up calling of xxx_free routines.
293 Just like free(), fix most of the xxx_free routines to accept
294 NULL. Remove the non-null checks from callers. Save much code.
297 *) Add secure heap for storage of private keys (when possible).
298 Add BIO_s_secmem(), CBIGNUM, etc.
299 Contributed by Akamai Technologies under our Corporate CLA.
302 *) Experimental support for a new, fast, unbiased prime candidate generator,
303 bn_probable_prime_dh_coprime(). Not currently used by any prime generator.
304 [Felix Laurie von Massenbach <felix@erbridge.co.uk>]
306 *) New output format NSS in the sess_id command line tool. This allows
307 exporting the session id and the master key in NSS keylog format.
308 [Martin Kaiser <martin@kaiser.cx>]
310 *) Harmonize version and its documentation. -f flag is used to display
312 [mancha <mancha1@zoho.com>]
314 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
315 in i2d_ECPrivateKey. Thanks to Ted Unangst for feedback on this issue.
316 [mancha <mancha1@zoho.com>]
318 *) Fix some double frees. These are not thought to be exploitable.
319 [mancha <mancha1@zoho.com>]
321 *) A missing bounds check in the handling of the TLS heartbeat extension
322 can be used to reveal up to 64k of memory to a connected client or
325 Thanks for Neel Mehta of Google Security for discovering this bug and to
326 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
327 preparing the fix (CVE-2014-0160)
328 [Adam Langley, Bodo Moeller]
330 *) Fix for the attack described in the paper "Recovering OpenSSL
331 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
332 by Yuval Yarom and Naomi Benger. Details can be obtained from:
333 http://eprint.iacr.org/2014/140
335 Thanks to Yuval Yarom and Naomi Benger for discovering this
336 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
337 [Yuval Yarom and Naomi Benger]
339 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
340 this fixes a limitation in previous versions of OpenSSL.
343 *) Experimental encrypt-then-mac support.
345 Experimental support for encrypt then mac from
346 draft-gutmann-tls-encrypt-then-mac-02.txt
348 To enable it set the appropriate extension number (0x42 for the test
349 server) using e.g. -DTLSEXT_TYPE_encrypt_then_mac=0x42
351 For non-compliant peers (i.e. just about everything) this should have no
354 WARNING: EXPERIMENTAL, SUBJECT TO CHANGE.
358 *) Add EVP support for key wrapping algorithms, to avoid problems with
359 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
360 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
361 algorithms and include tests cases.
364 *) Extend CMS code to support RSA-PSS signatures and RSA-OAEP for
368 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
369 MGF1 digest and OAEP label.
372 *) Make openssl verify return errors.
373 [Chris Palmer <palmer@google.com> and Ben Laurie]
375 *) New function ASN1_TIME_diff to calculate the difference between two
376 ASN1_TIME structures or one structure and the current time.
379 *) Update fips_test_suite to support multiple command line options. New
380 test to induce all self test errors in sequence and check expected
384 *) Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and
385 sign or verify all in one operation.
388 *) Add fips_algvs: a multicall fips utility incorporating all the algorithm
389 test programs and fips_test_suite. Includes functionality to parse
390 the minimal script output of fipsalgest.pl directly.
393 *) Add authorisation parameter to FIPS_module_mode_set().
396 *) Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves.
399 *) Use separate DRBG fields for internal and external flags. New function
400 FIPS_drbg_health_check() to perform on demand health checking. Add
401 generation tests to fips_test_suite with reduced health check interval to
402 demonstrate periodic health checking. Add "nodh" option to
403 fips_test_suite to skip very slow DH test.
406 *) New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers
410 *) More extensive health check for DRBG checking many more failure modes.
411 New function FIPS_selftest_drbg_all() to handle every possible DRBG
412 combination: call this in fips_test_suite.
415 *) Add support for Dual EC DRBG from SP800-90. Update DRBG algorithm test
416 and POST to handle Dual EC cases.
419 *) Add support for canonical generation of DSA parameter 'g'. See
422 *) Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
423 POST to handle HMAC cases.
426 *) Add functions FIPS_module_version() and FIPS_module_version_text()
427 to return numerical and string versions of the FIPS module number.
430 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
431 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implemented
432 outside the validated module in the FIPS capable OpenSSL.
435 *) Minor change to DRBG entropy callback semantics. In some cases
436 there is no multiple of the block length between min_len and
437 max_len. Allow the callback to return more than max_len bytes
438 of entropy but discard any extra: it is the callback's responsibility
439 to ensure that the extra data discarded does not impact the
440 requested amount of entropy.
443 *) Add PRNG security strength checks to RSA, DSA and ECDSA using
444 information in FIPS186-3, SP800-57 and SP800-131A.
447 *) CCM support via EVP. Interface is very similar to GCM case except we
448 must supply all data in one chunk (i.e. no update, final) and the
449 message length must be supplied if AAD is used. Add algorithm test
453 *) Initial version of POST overhaul. Add POST callback to allow the status
454 of POST to be monitored and/or failures induced. Modify fips_test_suite
455 to use callback. Always run all selftests even if one fails.
458 *) XTS support including algorithm test driver in the fips_gcmtest program.
459 Note: this does increase the maximum key length from 32 to 64 bytes but
460 there should be no binary compatibility issues as existing applications
461 will never use XTS mode.
464 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
465 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
466 performs algorithm blocking for unapproved PRNG types. Also do not
467 set PRNG type in FIPS_mode_set(): leave this to the application.
468 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
469 the standard OpenSSL PRNG: set additional data to a date time vector.
472 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
473 This shouldn't present any incompatibility problems because applications
474 shouldn't be using these directly and any that are will need to rethink
475 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
478 *) Extensive self tests and health checking required by SP800-90 DRBG.
479 Remove strength parameter from FIPS_drbg_instantiate and always
480 instantiate at maximum supported strength.
483 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
486 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
489 *) New function DH_compute_key_padded() to compute a DH key and pad with
490 leading zeroes if needed: this complies with SP800-56A et al.
493 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
494 anything, incomplete, subject to change and largely untested at present.
497 *) Modify fipscanisteronly build option to only build the necessary object
498 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
501 *) Add experimental option FIPSSYMS to give all symbols in
502 fipscanister.o and FIPS or fips prefix. This will avoid
503 conflicts with future versions of OpenSSL. Add perl script
504 util/fipsas.pl to preprocess assembly language source files
505 and rename any affected symbols.
508 *) Add selftest checks and algorithm block of non-fips algorithms in
509 FIPS mode. Remove DES2 from selftests.
512 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
513 return internal method without any ENGINE dependencies. Add new
514 tiny fips sign and verify functions.
517 *) New build option no-ec2m to disable characteristic 2 code.
520 *) New build option "fipscanisteronly". This only builds fipscanister.o
521 and (currently) associated fips utilities. Uses the file Makefile.fips
522 instead of Makefile.org as the prototype.
525 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
526 Update fips_gcmtest to use IV generator.
529 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
530 setting output buffer to NULL. The *Final function must be
531 called although it will not retrieve any additional data. The tag
532 can be set or retrieved with a ctrl. The IV length is by default 12
533 bytes (96 bits) but can be set to an alternative value. If the IV
534 length exceeds the maximum IV length (currently 16 bytes) it cannot be
538 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
539 underlying do_cipher function handles all cipher semantics itself
540 including padding and finalisation. This is useful if (for example)
541 an ENGINE cipher handles block padding itself. The behaviour of
542 do_cipher is subtly changed if this flag is set: the return value
543 is the number of characters written to the output buffer (zero is
544 no longer an error code) or a negative error code. Also if the
545 input buffer is NULL and length 0 finalisation should be performed.
548 *) If a candidate issuer certificate is already part of the constructed
549 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
552 *) Improve forward-security support: add functions
554 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
555 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
557 for use by SSL/TLS servers; the callback function will be called whenever a
558 new session is created, and gets to decide whether the session may be
559 cached to make it resumable (return 0) or not (return 1). (As by the
560 SSL/TLS protocol specifications, the session_id sent by the server will be
561 empty to indicate that the session is not resumable; also, the server will
562 not generate RFC 4507 (RFC 5077) session tickets.)
564 A simple reasonable callback implementation is to return is_forward_secure.
565 This parameter will be set to 1 or 0 depending on the ciphersuite selected
566 by the SSL/TLS server library, indicating whether it can provide forward
568 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
570 *) New -verify_name option in command line utilities to set verification
574 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
575 Add CMAC pkey methods.
578 *) Experimental renegotiation in s_server -www mode. If the client
579 browses /reneg connection is renegotiated. If /renegcert it is
580 renegotiated requesting a certificate.
583 *) Add an "external" session cache for debugging purposes to s_server. This
584 should help trace issues which normally are only apparent in deployed
585 multi-process servers.
588 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
589 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
590 BIO_set_cipher() and some obscure PEM functions were changed so they
591 can now return an error. The RAND changes required a change to the
592 RAND_METHOD structure.
595 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
596 a gcc attribute to warn if the result of a function is ignored. This
597 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
598 whose return value is often ignored.
601 Changes between 1.0.2d and 1.0.2e [3 Dec 2015]
603 *) BN_mod_exp may produce incorrect results on x86_64
605 There is a carry propagating bug in the x86_64 Montgomery squaring
606 procedure. No EC algorithms are affected. Analysis suggests that attacks
607 against RSA and DSA as a result of this defect would be very difficult to
608 perform and are not believed likely. Attacks against DH are considered just
609 feasible (although very difficult) because most of the work necessary to
610 deduce information about a private key may be performed offline. The amount
611 of resources required for such an attack would be very significant and
612 likely only accessible to a limited number of attackers. An attacker would
613 additionally need online access to an unpatched system using the target
614 private key in a scenario with persistent DH parameters and a private
615 key that is shared between multiple clients. For example this can occur by
616 default in OpenSSL DHE based SSL/TLS ciphersuites.
618 This issue was reported to OpenSSL by Hanno Böck.
622 *) Certificate verify crash with missing PSS parameter
624 The signature verification routines will crash with a NULL pointer
625 dereference if presented with an ASN.1 signature using the RSA PSS
626 algorithm and absent mask generation function parameter. Since these
627 routines are used to verify certificate signature algorithms this can be
628 used to crash any certificate verification operation and exploited in a
629 DoS attack. Any application which performs certificate verification is
630 vulnerable including OpenSSL clients and servers which enable client
633 This issue was reported to OpenSSL by Loïc Jonas Etienne (Qnective AG).
637 *) X509_ATTRIBUTE memory leak
639 When presented with a malformed X509_ATTRIBUTE structure OpenSSL will leak
640 memory. This structure is used by the PKCS#7 and CMS routines so any
641 application which reads PKCS#7 or CMS data from untrusted sources is
642 affected. SSL/TLS is not affected.
644 This issue was reported to OpenSSL by Adam Langley (Google/BoringSSL) using
649 *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
650 This changes the decoding behaviour for some invalid messages,
651 though the change is mostly in the more lenient direction, and
652 legacy behaviour is preserved as much as possible.
655 *) In DSA_generate_parameters_ex, if the provided seed is too short,
657 [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>]
659 Changes between 1.0.2c and 1.0.2d [9 Jul 2015]
661 *) Alternate chains certificate forgery
663 During certificate verfification, OpenSSL will attempt to find an
664 alternative certificate chain if the first attempt to build such a chain
665 fails. An error in the implementation of this logic can mean that an
666 attacker could cause certain checks on untrusted certificates to be
667 bypassed, such as the CA flag, enabling them to use a valid leaf
668 certificate to act as a CA and "issue" an invalid certificate.
670 This issue was reported to OpenSSL by Adam Langley/David Benjamin
674 Changes between 1.0.2b and 1.0.2c [12 Jun 2015]
676 *) Fix HMAC ABI incompatibility. The previous version introduced an ABI
677 incompatibility in the handling of HMAC. The previous ABI has now been
681 Changes between 1.0.2a and 1.0.2b [11 Jun 2015]
683 *) Malformed ECParameters causes infinite loop
685 When processing an ECParameters structure OpenSSL enters an infinite loop
686 if the curve specified is over a specially malformed binary polynomial
689 This can be used to perform denial of service against any
690 system which processes public keys, certificate requests or
691 certificates. This includes TLS clients and TLS servers with
692 client authentication enabled.
694 This issue was reported to OpenSSL by Joseph Barr-Pixton.
698 *) Exploitable out-of-bounds read in X509_cmp_time
700 X509_cmp_time does not properly check the length of the ASN1_TIME
701 string and can read a few bytes out of bounds. In addition,
702 X509_cmp_time accepts an arbitrary number of fractional seconds in the
705 An attacker can use this to craft malformed certificates and CRLs of
706 various sizes and potentially cause a segmentation fault, resulting in
707 a DoS on applications that verify certificates or CRLs. TLS clients
708 that verify CRLs are affected. TLS clients and servers with client
709 authentication enabled may be affected if they use custom verification
712 This issue was reported to OpenSSL by Robert Swiecki (Google), and
713 independently by Hanno Böck.
717 *) PKCS7 crash with missing EnvelopedContent
719 The PKCS#7 parsing code does not handle missing inner EncryptedContent
720 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs
721 with missing content and trigger a NULL pointer dereference on parsing.
723 Applications that decrypt PKCS#7 data or otherwise parse PKCS#7
724 structures from untrusted sources are affected. OpenSSL clients and
725 servers are not affected.
727 This issue was reported to OpenSSL by Michal Zalewski (Google).
731 *) CMS verify infinite loop with unknown hash function
733 When verifying a signedData message the CMS code can enter an infinite loop
734 if presented with an unknown hash function OID. This can be used to perform
735 denial of service against any system which verifies signedData messages using
737 This issue was reported to OpenSSL by Johannes Bauer.
741 *) Race condition handling NewSessionTicket
743 If a NewSessionTicket is received by a multi-threaded client when attempting to
744 reuse a previous ticket then a race condition can occur potentially leading to
745 a double free of the ticket data.
749 *) Only support 256-bit or stronger elliptic curves with the
750 'ecdh_auto' setting (server) or by default (client). Of supported
751 curves, prefer P-256 (both).
754 Changes between 1.0.2 and 1.0.2a [19 Mar 2015]
756 *) ClientHello sigalgs DoS fix
758 If a client connects to an OpenSSL 1.0.2 server and renegotiates with an
759 invalid signature algorithms extension a NULL pointer dereference will
760 occur. This can be exploited in a DoS attack against the server.
762 This issue was was reported to OpenSSL by David Ramos of Stanford
765 [Stephen Henson and Matt Caswell]
767 *) Multiblock corrupted pointer fix
769 OpenSSL 1.0.2 introduced the "multiblock" performance improvement. This
770 feature only applies on 64 bit x86 architecture platforms that support AES
771 NI instructions. A defect in the implementation of "multiblock" can cause
772 OpenSSL's internal write buffer to become incorrectly set to NULL when
773 using non-blocking IO. Typically, when the user application is using a
774 socket BIO for writing, this will only result in a failed connection.
775 However if some other BIO is used then it is likely that a segmentation
776 fault will be triggered, thus enabling a potential DoS attack.
778 This issue was reported to OpenSSL by Daniel Danner and Rainer Mueller.
782 *) Segmentation fault in DTLSv1_listen fix
784 The DTLSv1_listen function is intended to be stateless and processes the
785 initial ClientHello from many peers. It is common for user code to loop
786 over the call to DTLSv1_listen until a valid ClientHello is received with
787 an associated cookie. A defect in the implementation of DTLSv1_listen means
788 that state is preserved in the SSL object from one invocation to the next
789 that can lead to a segmentation fault. Errors processing the initial
790 ClientHello can trigger this scenario. An example of such an error could be
791 that a DTLS1.0 only client is attempting to connect to a DTLS1.2 only
794 This issue was reported to OpenSSL by Per Allansson.
798 *) Segmentation fault in ASN1_TYPE_cmp fix
800 The function ASN1_TYPE_cmp will crash with an invalid read if an attempt is
801 made to compare ASN.1 boolean types. Since ASN1_TYPE_cmp is used to check
802 certificate signature algorithm consistency this can be used to crash any
803 certificate verification operation and exploited in a DoS attack. Any
804 application which performs certificate verification is vulnerable including
805 OpenSSL clients and servers which enable client authentication.
809 *) Segmentation fault for invalid PSS parameters fix
811 The signature verification routines will crash with a NULL pointer
812 dereference if presented with an ASN.1 signature using the RSA PSS
813 algorithm and invalid parameters. Since these routines are used to verify
814 certificate signature algorithms this can be used to crash any
815 certificate verification operation and exploited in a DoS attack. Any
816 application which performs certificate verification is vulnerable including
817 OpenSSL clients and servers which enable client authentication.
819 This issue was was reported to OpenSSL by Brian Carpenter.
823 *) ASN.1 structure reuse memory corruption fix
825 Reusing a structure in ASN.1 parsing may allow an attacker to cause
826 memory corruption via an invalid write. Such reuse is and has been
827 strongly discouraged and is believed to be rare.
829 Applications that parse structures containing CHOICE or ANY DEFINED BY
830 components may be affected. Certificate parsing (d2i_X509 and related
831 functions) are however not affected. OpenSSL clients and servers are
836 *) PKCS7 NULL pointer dereferences fix
838 The PKCS#7 parsing code does not handle missing outer ContentInfo
839 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs with
840 missing content and trigger a NULL pointer dereference on parsing.
842 Applications that verify PKCS#7 signatures, decrypt PKCS#7 data or
843 otherwise parse PKCS#7 structures from untrusted sources are
844 affected. OpenSSL clients and servers are not affected.
846 This issue was reported to OpenSSL by Michal Zalewski (Google).
850 *) DoS via reachable assert in SSLv2 servers fix
852 A malicious client can trigger an OPENSSL_assert (i.e., an abort) in
853 servers that both support SSLv2 and enable export cipher suites by sending
854 a specially crafted SSLv2 CLIENT-MASTER-KEY message.
856 This issue was discovered by Sean Burford (Google) and Emilia Käsper
857 (OpenSSL development team).
861 *) Empty CKE with client auth and DHE fix
863 If client auth is used then a server can seg fault in the event of a DHE
864 ciphersuite being selected and a zero length ClientKeyExchange message
865 being sent by the client. This could be exploited in a DoS attack.
869 *) Handshake with unseeded PRNG fix
871 Under certain conditions an OpenSSL 1.0.2 client can complete a handshake
872 with an unseeded PRNG. The conditions are:
873 - The client is on a platform where the PRNG has not been seeded
874 automatically, and the user has not seeded manually
875 - A protocol specific client method version has been used (i.e. not
876 SSL_client_methodv23)
877 - A ciphersuite is used that does not require additional random data from
878 the PRNG beyond the initial ClientHello client random (e.g. PSK-RC4-SHA).
880 If the handshake succeeds then the client random that has been used will
881 have been generated from a PRNG with insufficient entropy and therefore the
882 output may be predictable.
884 For example using the following command with an unseeded openssl will
885 succeed on an unpatched platform:
887 openssl s_client -psk 1a2b3c4d -tls1_2 -cipher PSK-RC4-SHA
891 *) Use After Free following d2i_ECPrivatekey error fix
893 A malformed EC private key file consumed via the d2i_ECPrivateKey function
894 could cause a use after free condition. This, in turn, could cause a double
895 free in several private key parsing functions (such as d2i_PrivateKey
896 or EVP_PKCS82PKEY) and could lead to a DoS attack or memory corruption
897 for applications that receive EC private keys from untrusted
898 sources. This scenario is considered rare.
900 This issue was discovered by the BoringSSL project and fixed in their
905 *) X509_to_X509_REQ NULL pointer deref fix
907 The function X509_to_X509_REQ will crash with a NULL pointer dereference if
908 the certificate key is invalid. This function is rarely used in practice.
910 This issue was discovered by Brian Carpenter.
914 *) Removed the export ciphers from the DEFAULT ciphers
917 Changes between 1.0.1l and 1.0.2 [22 Jan 2015]
919 *) Facilitate "universal" ARM builds targeting range of ARM ISAs, e.g.
920 ARMv5 through ARMv8, as opposite to "locking" it to single one.
921 So far those who have to target multiple plaforms would compromise
922 and argue that binary targeting say ARMv5 would still execute on
923 ARMv8. "Universal" build resolves this compromise by providing
924 near-optimal performance even on newer platforms.
927 *) Accelerated NIST P-256 elliptic curve implementation for x86_64
928 (other platforms pending).
929 [Shay Gueron & Vlad Krasnov (Intel Corp), Andy Polyakov]
931 *) Add support for the SignedCertificateTimestampList certificate and
932 OCSP response extensions from RFC6962.
935 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
936 for corner cases. (Certain input points at infinity could lead to
937 bogus results, with non-infinity inputs mapped to infinity too.)
940 *) Initial support for PowerISA 2.0.7, first implemented in POWER8.
941 This covers AES, SHA256/512 and GHASH. "Initial" means that most
942 common cases are optimized and there still is room for further
943 improvements. Vector Permutation AES for Altivec is also added.
946 *) Add support for little-endian ppc64 Linux target.
947 [Marcelo Cerri (IBM)]
949 *) Initial support for AMRv8 ISA crypto extensions. This covers AES,
950 SHA1, SHA256 and GHASH. "Initial" means that most common cases
951 are optimized and there still is room for further improvements.
952 Both 32- and 64-bit modes are supported.
953 [Andy Polyakov, Ard Biesheuvel (Linaro)]
955 *) Improved ARMv7 NEON support.
958 *) Support for SPARC Architecture 2011 crypto extensions, first
959 implemented in SPARC T4. This covers AES, DES, Camellia, SHA1,
960 SHA256/512, MD5, GHASH and modular exponentiation.
961 [Andy Polyakov, David Miller]
963 *) Accelerated modular exponentiation for Intel processors, a.k.a.
965 [Shay Gueron & Vlad Krasnov (Intel Corp)]
967 *) Support for new and upcoming Intel processors, including AVX2,
968 BMI and SHA ISA extensions. This includes additional "stitched"
969 implementations, AESNI-SHA256 and GCM, and multi-buffer support
972 This work was sponsored by Intel Corp.
975 *) Support for DTLS 1.2. This adds two sets of DTLS methods: DTLS_*_method()
976 supports both DTLS 1.2 and 1.0 and should use whatever version the peer
977 supports and DTLSv1_2_*_method() which supports DTLS 1.2 only.
980 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
981 this fixes a limiation in previous versions of OpenSSL.
984 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
985 MGF1 digest and OAEP label.
988 *) Add EVP support for key wrapping algorithms, to avoid problems with
989 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
990 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
991 algorithms and include tests cases.
994 *) Add functions to allocate and set the fields of an ECDSA_METHOD
996 [Douglas E. Engert, Steve Henson]
998 *) New functions OPENSSL_gmtime_diff and ASN1_TIME_diff to find the
999 difference in days and seconds between two tm or ASN1_TIME structures.
1002 *) Add -rev test option to s_server to just reverse order of characters
1003 received by client and send back to server. Also prints an abbreviated
1004 summary of the connection parameters.
1007 *) New option -brief for s_client and s_server to print out a brief summary
1008 of connection parameters.
1011 *) Add callbacks for arbitrary TLS extensions.
1012 [Trevor Perrin <trevp@trevp.net> and Ben Laurie]
1014 *) New option -crl_download in several openssl utilities to download CRLs
1015 from CRLDP extension in certificates.
1018 *) New options -CRL and -CRLform for s_client and s_server for CRLs.
1021 *) New function X509_CRL_diff to generate a delta CRL from the difference
1022 of two full CRLs. Add support to "crl" utility.
1025 *) New functions to set lookup_crls function and to retrieve
1026 X509_STORE from X509_STORE_CTX.
1029 *) Print out deprecated issuer and subject unique ID fields in
1033 *) Extend OCSP I/O functions so they can be used for simple general purpose
1034 HTTP as well as OCSP. New wrapper function which can be used to download
1035 CRLs using the OCSP API.
1038 *) Delegate command line handling in s_client/s_server to SSL_CONF APIs.
1041 *) SSL_CONF* functions. These provide a common framework for application
1042 configuration using configuration files or command lines.
1045 *) SSL/TLS tracing code. This parses out SSL/TLS records using the
1046 message callback and prints the results. Needs compile time option
1047 "enable-ssl-trace". New options to s_client and s_server to enable
1051 *) New ctrl and macro to retrieve supported points extensions.
1052 Print out extension in s_server and s_client.
1055 *) New functions to retrieve certificate signature and signature
1059 *) Add functions to retrieve and manipulate the raw cipherlist sent by a
1063 *) New Suite B modes for TLS code. These use and enforce the requirements
1064 of RFC6460: restrict ciphersuites, only permit Suite B algorithms and
1065 only use Suite B curves. The Suite B modes can be set by using the
1066 strings "SUITEB128", "SUITEB192" or "SUITEB128ONLY" for the cipherstring.
1069 *) New chain verification flags for Suite B levels of security. Check
1070 algorithms are acceptable when flags are set in X509_verify_cert.
1073 *) Make tls1_check_chain return a set of flags indicating checks passed
1074 by a certificate chain. Add additional tests to handle client
1075 certificates: checks for matching certificate type and issuer name
1079 *) If an attempt is made to use a signature algorithm not in the peer
1080 preference list abort the handshake. If client has no suitable
1081 signature algorithms in response to a certificate request do not
1082 use the certificate.
1085 *) If server EC tmp key is not in client preference list abort handshake.
1088 *) Add support for certificate stores in CERT structure. This makes it
1089 possible to have different stores per SSL structure or one store in
1090 the parent SSL_CTX. Include distint stores for certificate chain
1091 verification and chain building. New ctrl SSL_CTRL_BUILD_CERT_CHAIN
1092 to build and store a certificate chain in CERT structure: returing
1093 an error if the chain cannot be built: this will allow applications
1094 to test if a chain is correctly configured.
1096 Note: if the CERT based stores are not set then the parent SSL_CTX
1097 store is used to retain compatibility with existing behaviour.
1101 *) New function ssl_set_client_disabled to set a ciphersuite disabled
1102 mask based on the current session, check mask when sending client
1103 hello and checking the requested ciphersuite.
1106 *) New ctrls to retrieve and set certificate types in a certificate
1107 request message. Print out received values in s_client. If certificate
1108 types is not set with custom values set sensible values based on
1109 supported signature algorithms.
1112 *) Support for distinct client and server supported signature algorithms.
1115 *) Add certificate callback. If set this is called whenever a certificate
1116 is required by client or server. An application can decide which
1117 certificate chain to present based on arbitrary criteria: for example
1118 supported signature algorithms. Add very simple example to s_server.
1119 This fixes many of the problems and restrictions of the existing client
1120 certificate callback: for example you can now clear an existing
1121 certificate and specify the whole chain.
1124 *) Add new "valid_flags" field to CERT_PKEY structure which determines what
1125 the certificate can be used for (if anything). Set valid_flags field
1126 in new tls1_check_chain function. Simplify ssl_set_cert_masks which used
1127 to have similar checks in it.
1129 Add new "cert_flags" field to CERT structure and include a "strict mode".
1130 This enforces some TLS certificate requirements (such as only permitting
1131 certificate signature algorithms contained in the supported algorithms
1132 extension) which some implementations ignore: this option should be used
1133 with caution as it could cause interoperability issues.
1136 *) Update and tidy signature algorithm extension processing. Work out
1137 shared signature algorithms based on preferences and peer algorithms
1138 and print them out in s_client and s_server. Abort handshake if no
1139 shared signature algorithms.
1142 *) Add new functions to allow customised supported signature algorithms
1143 for SSL and SSL_CTX structures. Add options to s_client and s_server
1147 *) New function SSL_certs_clear() to delete all references to certificates
1148 from an SSL structure. Before this once a certificate had been added
1149 it couldn't be removed.
1152 *) Integrate hostname, email address and IP address checking with certificate
1153 verification. New verify options supporting checking in opensl utility.
1156 *) Fixes and wildcard matching support to hostname and email checking
1157 functions. Add manual page.
1158 [Florian Weimer (Red Hat Product Security Team)]
1160 *) New functions to check a hostname email or IP address against a
1161 certificate. Add options x509 utility to print results of checks against
1165 *) Fix OCSP checking.
1166 [Rob Stradling <rob.stradling@comodo.com> and Ben Laurie]
1168 *) Initial experimental support for explicitly trusted non-root CAs.
1169 OpenSSL still tries to build a complete chain to a root but if an
1170 intermediate CA has a trust setting included that is used. The first
1171 setting is used: whether to trust (e.g., -addtrust option to the x509
1175 *) Add -trusted_first option which attempts to find certificates in the
1176 trusted store even if an untrusted chain is also supplied.
1179 *) MIPS assembly pack updates: support for MIPS32r2 and SmartMIPS ASE,
1180 platform support for Linux and Android.
1183 *) Support for linux-x32, ILP32 environment in x86_64 framework.
1186 *) Experimental multi-implementation support for FIPS capable OpenSSL.
1187 When in FIPS mode the approved implementations are used as normal,
1188 when not in FIPS mode the internal unapproved versions are used instead.
1189 This means that the FIPS capable OpenSSL isn't forced to use the
1190 (often lower performance) FIPS implementations outside FIPS mode.
1193 *) Transparently support X9.42 DH parameters when calling
1194 PEM_read_bio_DHparameters. This means existing applications can handle
1195 the new parameter format automatically.
1198 *) Initial experimental support for X9.42 DH parameter format: mainly
1199 to support use of 'q' parameter for RFC5114 parameters.
1202 *) Add DH parameters from RFC5114 including test data to dhtest.
1205 *) Support for automatic EC temporary key parameter selection. If enabled
1206 the most preferred EC parameters are automatically used instead of
1207 hardcoded fixed parameters. Now a server just has to call:
1208 SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically
1209 support ECDH and use the most appropriate parameters.
1212 *) Enhance and tidy EC curve and point format TLS extension code. Use
1213 static structures instead of allocation if default values are used.
1214 New ctrls to set curves we wish to support and to retrieve shared curves.
1215 Print out shared curves in s_server. New options to s_server and s_client
1216 to set list of supported curves.
1219 *) New ctrls to retrieve supported signature algorithms and
1220 supported curve values as an array of NIDs. Extend openssl utility
1221 to print out received values.
1224 *) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert
1225 between NIDs and the more common NIST names such as "P-256". Enhance
1226 ecparam utility and ECC method to recognise the NIST names for curves.
1229 *) Enhance SSL/TLS certificate chain handling to support different
1230 chains for each certificate instead of one chain in the parent SSL_CTX.
1233 *) Support for fixed DH ciphersuite client authentication: where both
1234 server and client use DH certificates with common parameters.
1237 *) Support for fixed DH ciphersuites: those requiring DH server
1241 *) New function i2d_re_X509_tbs for re-encoding the TBS portion of
1243 Note: Related 1.0.2-beta specific macros X509_get_cert_info,
1244 X509_CINF_set_modified, X509_CINF_get_issuer, X509_CINF_get_extensions and
1245 X509_CINF_get_signature were reverted post internal team review.
1247 Changes between 1.0.1k and 1.0.1l [15 Jan 2015]
1249 *) Build fixes for the Windows and OpenVMS platforms
1250 [Matt Caswell and Richard Levitte]
1252 Changes between 1.0.1j and 1.0.1k [8 Jan 2015]
1254 *) Fix DTLS segmentation fault in dtls1_get_record. A carefully crafted DTLS
1255 message can cause a segmentation fault in OpenSSL due to a NULL pointer
1256 dereference. This could lead to a Denial Of Service attack. Thanks to
1257 Markus Stenberg of Cisco Systems, Inc. for reporting this issue.
1261 *) Fix DTLS memory leak in dtls1_buffer_record. A memory leak can occur in the
1262 dtls1_buffer_record function under certain conditions. In particular this
1263 could occur if an attacker sent repeated DTLS records with the same
1264 sequence number but for the next epoch. The memory leak could be exploited
1265 by an attacker in a Denial of Service attack through memory exhaustion.
1266 Thanks to Chris Mueller for reporting this issue.
1270 *) Fix issue where no-ssl3 configuration sets method to NULL. When openssl is
1271 built with the no-ssl3 option and a SSL v3 ClientHello is received the ssl
1272 method would be set to NULL which could later result in a NULL pointer
1273 dereference. Thanks to Frank Schmirler for reporting this issue.
1277 *) Abort handshake if server key exchange message is omitted for ephemeral
1280 Thanks to Karthikeyan Bhargavan of the PROSECCO team at INRIA for
1281 reporting this issue.
1285 *) Remove non-export ephemeral RSA code on client and server. This code
1286 violated the TLS standard by allowing the use of temporary RSA keys in
1287 non-export ciphersuites and could be used by a server to effectively
1288 downgrade the RSA key length used to a value smaller than the server
1289 certificate. Thanks for Karthikeyan Bhargavan of the PROSECCO team at
1290 INRIA or reporting this issue.
1294 *) Fixed issue where DH client certificates are accepted without verification.
1295 An OpenSSL server will accept a DH certificate for client authentication
1296 without the certificate verify message. This effectively allows a client to
1297 authenticate without the use of a private key. This only affects servers
1298 which trust a client certificate authority which issues certificates
1299 containing DH keys: these are extremely rare and hardly ever encountered.
1300 Thanks for Karthikeyan Bhargavan of the PROSECCO team at INRIA or reporting
1305 *) Ensure that the session ID context of an SSL is updated when its
1306 SSL_CTX is updated via SSL_set_SSL_CTX.
1308 The session ID context is typically set from the parent SSL_CTX,
1309 and can vary with the CTX.
1312 *) Fix various certificate fingerprint issues.
1314 By using non-DER or invalid encodings outside the signed portion of a
1315 certificate the fingerprint can be changed without breaking the signature.
1316 Although no details of the signed portion of the certificate can be changed
1317 this can cause problems with some applications: e.g. those using the
1318 certificate fingerprint for blacklists.
1320 1. Reject signatures with non zero unused bits.
1322 If the BIT STRING containing the signature has non zero unused bits reject
1323 the signature. All current signature algorithms require zero unused bits.
1325 2. Check certificate algorithm consistency.
1327 Check the AlgorithmIdentifier inside TBS matches the one in the
1328 certificate signature. NB: this will result in signature failure
1329 errors for some broken certificates.
1331 Thanks to Konrad Kraszewski from Google for reporting this issue.
1333 3. Check DSA/ECDSA signatures use DER.
1335 Reencode DSA/ECDSA signatures and compare with the original received
1336 signature. Return an error if there is a mismatch.
1338 This will reject various cases including garbage after signature
1339 (thanks to Antti Karjalainen and Tuomo Untinen from the Codenomicon CROSS
1340 program for discovering this case) and use of BER or invalid ASN.1 INTEGERs
1341 (negative or with leading zeroes).
1343 Further analysis was conducted and fixes were developed by Stephen Henson
1344 of the OpenSSL core team.
1349 *) Correct Bignum squaring. Bignum squaring (BN_sqr) may produce incorrect
1350 results on some platforms, including x86_64. This bug occurs at random
1351 with a very low probability, and is not known to be exploitable in any
1352 way, though its exact impact is difficult to determine. Thanks to Pieter
1353 Wuille (Blockstream) who reported this issue and also suggested an initial
1354 fix. Further analysis was conducted by the OpenSSL development team and
1355 Adam Langley of Google. The final fix was developed by Andy Polyakov of
1356 the OpenSSL core team.
1360 *) Do not resume sessions on the server if the negotiated protocol
1361 version does not match the session's version. Resuming with a different
1362 version, while not strictly forbidden by the RFC, is of questionable
1363 sanity and breaks all known clients.
1364 [David Benjamin, Emilia Käsper]
1366 *) Tighten handling of the ChangeCipherSpec (CCS) message: reject
1367 early CCS messages during renegotiation. (Note that because
1368 renegotiation is encrypted, this early CCS was not exploitable.)
1371 *) Tighten client-side session ticket handling during renegotiation:
1372 ensure that the client only accepts a session ticket if the server sends
1373 the extension anew in the ServerHello. Previously, a TLS client would
1374 reuse the old extension state and thus accept a session ticket if one was
1375 announced in the initial ServerHello.
1377 Similarly, ensure that the client requires a session ticket if one
1378 was advertised in the ServerHello. Previously, a TLS client would
1379 ignore a missing NewSessionTicket message.
1382 Changes between 1.0.1i and 1.0.1j [15 Oct 2014]
1384 *) SRTP Memory Leak.
1386 A flaw in the DTLS SRTP extension parsing code allows an attacker, who
1387 sends a carefully crafted handshake message, to cause OpenSSL to fail
1388 to free up to 64k of memory causing a memory leak. This could be
1389 exploited in a Denial Of Service attack. This issue affects OpenSSL
1390 1.0.1 server implementations for both SSL/TLS and DTLS regardless of
1391 whether SRTP is used or configured. Implementations of OpenSSL that
1392 have been compiled with OPENSSL_NO_SRTP defined are not affected.
1394 The fix was developed by the OpenSSL team.
1398 *) Session Ticket Memory Leak.
1400 When an OpenSSL SSL/TLS/DTLS server receives a session ticket the
1401 integrity of that ticket is first verified. In the event of a session
1402 ticket integrity check failing, OpenSSL will fail to free memory
1403 causing a memory leak. By sending a large number of invalid session
1404 tickets an attacker could exploit this issue in a Denial Of Service
1409 *) Build option no-ssl3 is incomplete.
1411 When OpenSSL is configured with "no-ssl3" as a build option, servers
1412 could accept and complete a SSL 3.0 handshake, and clients could be
1413 configured to send them.
1415 [Akamai and the OpenSSL team]
1417 *) Add support for TLS_FALLBACK_SCSV.
1418 Client applications doing fallback retries should call
1419 SSL_set_mode(s, SSL_MODE_SEND_FALLBACK_SCSV).
1421 [Adam Langley, Bodo Moeller]
1423 *) Add additional DigestInfo checks.
1425 Reencode DigestInto in DER and check against the original when
1426 verifying RSA signature: this will reject any improperly encoded
1427 DigestInfo structures.
1429 Note: this is a precautionary measure and no attacks are currently known.
1433 Changes between 1.0.1h and 1.0.1i [6 Aug 2014]
1435 *) Fix SRP buffer overrun vulnerability. Invalid parameters passed to the
1436 SRP code can be overrun an internal buffer. Add sanity check that
1437 g, A, B < N to SRP code.
1439 Thanks to Sean Devlin and Watson Ladd of Cryptography Services, NCC
1440 Group for discovering this issue.
1444 *) A flaw in the OpenSSL SSL/TLS server code causes the server to negotiate
1445 TLS 1.0 instead of higher protocol versions when the ClientHello message
1446 is badly fragmented. This allows a man-in-the-middle attacker to force a
1447 downgrade to TLS 1.0 even if both the server and the client support a
1448 higher protocol version, by modifying the client's TLS records.
1450 Thanks to David Benjamin and Adam Langley (Google) for discovering and
1451 researching this issue.
1455 *) OpenSSL DTLS clients enabling anonymous (EC)DH ciphersuites are subject
1456 to a denial of service attack. A malicious server can crash the client
1457 with a null pointer dereference (read) by specifying an anonymous (EC)DH
1458 ciphersuite and sending carefully crafted handshake messages.
1460 Thanks to Felix Gröbert (Google) for discovering and researching this
1465 *) By sending carefully crafted DTLS packets an attacker could cause openssl
1466 to leak memory. This can be exploited through a Denial of Service attack.
1467 Thanks to Adam Langley for discovering and researching this issue.
1471 *) An attacker can force openssl to consume large amounts of memory whilst
1472 processing DTLS handshake messages. This can be exploited through a
1473 Denial of Service attack.
1474 Thanks to Adam Langley for discovering and researching this issue.
1478 *) An attacker can force an error condition which causes openssl to crash
1479 whilst processing DTLS packets due to memory being freed twice. This
1480 can be exploited through a Denial of Service attack.
1481 Thanks to Adam Langley and Wan-Teh Chang for discovering and researching
1486 *) If a multithreaded client connects to a malicious server using a resumed
1487 session and the server sends an ec point format extension it could write
1488 up to 255 bytes to freed memory.
1490 Thanks to Gabor Tyukasz (LogMeIn Inc) for discovering and researching this
1495 *) A malicious server can crash an OpenSSL client with a null pointer
1496 dereference (read) by specifying an SRP ciphersuite even though it was not
1497 properly negotiated with the client. This can be exploited through a
1498 Denial of Service attack.
1500 Thanks to Joonas Kuorilehto and Riku Hietamäki (Codenomicon) for
1501 discovering and researching this issue.
1505 *) A flaw in OBJ_obj2txt may cause pretty printing functions such as
1506 X509_name_oneline, X509_name_print_ex et al. to leak some information
1507 from the stack. Applications may be affected if they echo pretty printing
1508 output to the attacker.
1510 Thanks to Ivan Fratric (Google) for discovering this issue.
1512 [Emilia Käsper, and Steve Henson]
1514 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
1515 for corner cases. (Certain input points at infinity could lead to
1516 bogus results, with non-infinity inputs mapped to infinity too.)
1519 Changes between 1.0.1g and 1.0.1h [5 Jun 2014]
1521 *) Fix for SSL/TLS MITM flaw. An attacker using a carefully crafted
1522 handshake can force the use of weak keying material in OpenSSL
1523 SSL/TLS clients and servers.
1525 Thanks to KIKUCHI Masashi (Lepidum Co. Ltd.) for discovering and
1526 researching this issue. (CVE-2014-0224)
1527 [KIKUCHI Masashi, Steve Henson]
1529 *) Fix DTLS recursion flaw. By sending an invalid DTLS handshake to an
1530 OpenSSL DTLS client the code can be made to recurse eventually crashing
1533 Thanks to Imre Rad (Search-Lab Ltd.) for discovering this issue.
1535 [Imre Rad, Steve Henson]
1537 *) Fix DTLS invalid fragment vulnerability. A buffer overrun attack can
1538 be triggered by sending invalid DTLS fragments to an OpenSSL DTLS
1539 client or server. This is potentially exploitable to run arbitrary
1540 code on a vulnerable client or server.
1542 Thanks to Jüri Aedla for reporting this issue. (CVE-2014-0195)
1543 [Jüri Aedla, Steve Henson]
1545 *) Fix bug in TLS code where clients enable anonymous ECDH ciphersuites
1546 are subject to a denial of service attack.
1548 Thanks to Felix Gröbert and Ivan Fratric at Google for discovering
1549 this issue. (CVE-2014-3470)
1550 [Felix Gröbert, Ivan Fratric, Steve Henson]
1552 *) Harmonize version and its documentation. -f flag is used to display
1554 [mancha <mancha1@zoho.com>]
1556 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
1557 in i2d_ECPrivateKey.
1558 [mancha <mancha1@zoho.com>]
1560 *) Fix some double frees. These are not thought to be exploitable.
1561 [mancha <mancha1@zoho.com>]
1563 Changes between 1.0.1f and 1.0.1g [7 Apr 2014]
1565 *) A missing bounds check in the handling of the TLS heartbeat extension
1566 can be used to reveal up to 64k of memory to a connected client or
1569 Thanks for Neel Mehta of Google Security for discovering this bug and to
1570 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
1571 preparing the fix (CVE-2014-0160)
1572 [Adam Langley, Bodo Moeller]
1574 *) Fix for the attack described in the paper "Recovering OpenSSL
1575 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
1576 by Yuval Yarom and Naomi Benger. Details can be obtained from:
1577 http://eprint.iacr.org/2014/140
1579 Thanks to Yuval Yarom and Naomi Benger for discovering this
1580 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
1581 [Yuval Yarom and Naomi Benger]
1583 *) TLS pad extension: draft-agl-tls-padding-03
1585 Workaround for the "TLS hang bug" (see FAQ and PR#2771): if the
1586 TLS client Hello record length value would otherwise be > 255 and
1587 less that 512 pad with a dummy extension containing zeroes so it
1588 is at least 512 bytes long.
1590 [Adam Langley, Steve Henson]
1592 Changes between 1.0.1e and 1.0.1f [6 Jan 2014]
1594 *) Fix for TLS record tampering bug. A carefully crafted invalid
1595 handshake could crash OpenSSL with a NULL pointer exception.
1596 Thanks to Anton Johansson for reporting this issues.
1599 *) Keep original DTLS digest and encryption contexts in retransmission
1600 structures so we can use the previous session parameters if they need
1601 to be resent. (CVE-2013-6450)
1604 *) Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which
1605 avoids preferring ECDHE-ECDSA ciphers when the client appears to be
1606 Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for
1607 several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug
1608 is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing
1609 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer.
1610 [Rob Stradling, Adam Langley]
1612 Changes between 1.0.1d and 1.0.1e [11 Feb 2013]
1614 *) Correct fix for CVE-2013-0169. The original didn't work on AES-NI
1615 supporting platforms or when small records were transferred.
1616 [Andy Polyakov, Steve Henson]
1618 Changes between 1.0.1c and 1.0.1d [5 Feb 2013]
1620 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
1622 This addresses the flaw in CBC record processing discovered by
1623 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
1624 at: http://www.isg.rhul.ac.uk/tls/
1626 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
1627 Security Group at Royal Holloway, University of London
1628 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
1629 Emilia Käsper for the initial patch.
1631 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
1633 *) Fix flaw in AESNI handling of TLS 1.2 and 1.1 records for CBC mode
1634 ciphersuites which can be exploited in a denial of service attack.
1635 Thanks go to and to Adam Langley <agl@chromium.org> for discovering
1636 and detecting this bug and to Wolfgang Ettlinger
1637 <wolfgang.ettlinger@gmail.com> for independently discovering this issue.
1641 *) Return an error when checking OCSP signatures when key is NULL.
1642 This fixes a DoS attack. (CVE-2013-0166)
1645 *) Make openssl verify return errors.
1646 [Chris Palmer <palmer@google.com> and Ben Laurie]
1648 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
1649 the right response is stapled. Also change SSL_get_certificate()
1650 so it returns the certificate actually sent.
1651 See http://rt.openssl.org/Ticket/Display.html?id=2836.
1652 [Rob Stradling <rob.stradling@comodo.com>]
1654 *) Fix possible deadlock when decoding public keys.
1657 *) Don't use TLS 1.0 record version number in initial client hello
1661 Changes between 1.0.1b and 1.0.1c [10 May 2012]
1663 *) Sanity check record length before skipping explicit IV in TLS
1664 1.2, 1.1 and DTLS to fix DoS attack.
1666 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
1667 fuzzing as a service testing platform.
1671 *) Initialise tkeylen properly when encrypting CMS messages.
1672 Thanks to Solar Designer of Openwall for reporting this issue.
1675 *) In FIPS mode don't try to use composite ciphers as they are not
1679 Changes between 1.0.1a and 1.0.1b [26 Apr 2012]
1681 *) OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and
1682 1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately
1683 mean any application compiled against OpenSSL 1.0.0 headers setting
1684 SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disablng
1685 TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to
1686 0x10000000L Any application which was previously compiled against
1687 OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1
1688 will need to be recompiled as a result. Letting be results in
1689 inability to disable specifically TLS 1.1 and in client context,
1690 in unlike event, limit maximum offered version to TLS 1.0 [see below].
1693 *) In order to ensure interoperabilty SSL_OP_NO_protocolX does not
1694 disable just protocol X, but all protocols above X *if* there are
1695 protocols *below* X still enabled. In more practical terms it means
1696 that if application wants to disable TLS1.0 in favor of TLS1.1 and
1697 above, it's not sufficient to pass SSL_OP_NO_TLSv1, one has to pass
1698 SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2. This applies to
1702 Changes between 1.0.1 and 1.0.1a [19 Apr 2012]
1704 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
1705 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
1706 in CRYPTO_realloc_clean.
1708 Thanks to Tavis Ormandy, Google Security Team, for discovering this
1709 issue and to Adam Langley <agl@chromium.org> for fixing it.
1711 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
1713 *) Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections.
1716 *) Workarounds for some broken servers that "hang" if a client hello
1717 record length exceeds 255 bytes.
1719 1. Do not use record version number > TLS 1.0 in initial client
1720 hello: some (but not all) hanging servers will now work.
1721 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate
1722 the number of ciphers sent in the client hello. This should be
1723 set to an even number, such as 50, for example by passing:
1724 -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure.
1725 Most broken servers should now work.
1726 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable
1727 TLS 1.2 client support entirely.
1730 *) Fix SEGV in Vector Permutation AES module observed in OpenSSH.
1733 Changes between 1.0.0h and 1.0.1 [14 Mar 2012]
1735 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET
1736 STRING form instead of a DigestInfo.
1739 *) The format used for MDC2 RSA signatures is inconsistent between EVP
1740 and the RSA_sign/RSA_verify functions. This was made more apparent when
1741 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
1742 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
1743 the correct format in RSA_verify so both forms transparently work.
1746 *) Some servers which support TLS 1.0 can choke if we initially indicate
1747 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
1748 encrypted premaster secret. As a workaround use the maximum permitted
1749 client version in client hello, this should keep such servers happy
1750 and still work with previous versions of OpenSSL.
1753 *) Add support for TLS/DTLS heartbeats.
1754 [Robin Seggelmann <seggelmann@fh-muenster.de>]
1756 *) Add support for SCTP.
1757 [Robin Seggelmann <seggelmann@fh-muenster.de>]
1759 *) Improved PRNG seeding for VOS.
1760 [Paul Green <Paul.Green@stratus.com>]
1762 *) Extensive assembler packs updates, most notably:
1764 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
1765 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
1766 - x86_64: bit-sliced AES implementation;
1767 - ARM: NEON support, contemporary platforms optimizations;
1768 - s390x: z196 support;
1769 - *: GHASH and GF(2^m) multiplication implementations;
1773 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
1774 (removal of unnecessary code)
1775 [Peter Sylvester <peter.sylvester@edelweb.fr>]
1777 *) Add TLS key material exporter from RFC 5705.
1780 *) Add DTLS-SRTP negotiation from RFC 5764.
1783 *) Add Next Protocol Negotiation,
1784 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
1785 disabled with a no-npn flag to config or Configure. Code donated
1787 [Adam Langley <agl@google.com> and Ben Laurie]
1789 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
1790 NIST-P256, NIST-P521, with constant-time single point multiplication on
1791 typical inputs. Compiler support for the nonstandard type __uint128_t is
1792 required to use this (present in gcc 4.4 and later, for 64-bit builds).
1793 Code made available under Apache License version 2.0.
1795 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
1796 line to include this in your build of OpenSSL, and run "make depend" (or
1797 "make update"). This enables the following EC_METHODs:
1799 EC_GFp_nistp224_method()
1800 EC_GFp_nistp256_method()
1801 EC_GFp_nistp521_method()
1803 EC_GROUP_new_by_curve_name() will automatically use these (while
1804 EC_GROUP_new_curve_GFp() currently prefers the more flexible
1806 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
1808 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
1809 all platforms. Move ssize_t definition from e_os.h to the public
1810 header file e_os2.h as it now appears in public header file cms.h
1813 *) New -sigopt option to the ca, req and x509 utilities. Additional
1814 signature parameters can be passed using this option and in
1818 *) Add RSA PSS signing function. This will generate and set the
1819 appropriate AlgorithmIdentifiers for PSS based on those in the
1820 corresponding EVP_MD_CTX structure. No application support yet.
1823 *) Support for companion algorithm specific ASN1 signing routines.
1824 New function ASN1_item_sign_ctx() signs a pre-initialised
1825 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
1826 the appropriate parameters.
1829 *) Add new algorithm specific ASN1 verification initialisation function
1830 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
1831 handling will be the same no matter what EVP_PKEY_METHOD is used.
1832 Add a PSS handler to support verification of PSS signatures: checked
1833 against a number of sample certificates.
1836 *) Add signature printing for PSS. Add PSS OIDs.
1837 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
1839 *) Add algorithm specific signature printing. An individual ASN1 method
1840 can now print out signatures instead of the standard hex dump.
1842 More complex signatures (e.g. PSS) can print out more meaningful
1843 information. Include DSA version that prints out the signature
1847 *) Password based recipient info support for CMS library: implementing
1851 *) Split password based encryption into PBES2 and PBKDF2 functions. This
1852 neatly separates the code into cipher and PBE sections and is required
1853 for some algorithms that split PBES2 into separate pieces (such as
1854 password based CMS).
1857 *) Session-handling fixes:
1858 - Fix handling of connections that are resuming with a session ID,
1859 but also support Session Tickets.
1860 - Fix a bug that suppressed issuing of a new ticket if the client
1861 presented a ticket with an expired session.
1862 - Try to set the ticket lifetime hint to something reasonable.
1863 - Make tickets shorter by excluding irrelevant information.
1864 - On the client side, don't ignore renewed tickets.
1865 [Adam Langley, Bodo Moeller (Google)]
1867 *) Fix PSK session representation.
1870 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
1872 This work was sponsored by Intel.
1875 *) Add GCM support to TLS library. Some custom code is needed to split
1876 the IV between the fixed (from PRF) and explicit (from TLS record)
1877 portions. This adds all GCM ciphersuites supported by RFC5288 and
1878 RFC5289. Generalise some AES* cipherstrings to include GCM and
1879 add a special AESGCM string for GCM only.
1882 *) Expand range of ctrls for AES GCM. Permit setting invocation
1883 field on decrypt and retrieval of invocation field only on encrypt.
1886 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
1887 As required by RFC5289 these ciphersuites cannot be used if for
1888 versions of TLS earlier than 1.2.
1891 *) For FIPS capable OpenSSL interpret a NULL default public key method
1892 as unset and return the appropriate default but do *not* set the default.
1893 This means we can return the appropriate method in applications that
1894 switch between FIPS and non-FIPS modes.
1897 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
1898 ENGINE is used then we cannot handle that in the FIPS module so we
1899 keep original code iff non-FIPS operations are allowed.
1902 *) Add -attime option to openssl utilities.
1903 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
1905 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
1908 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
1909 FIPS EC methods unconditionally for now.
1912 *) New build option no-ec2m to disable characteristic 2 code.
1915 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
1916 all cases can be covered as some introduce binary incompatibilities.
1919 *) Redirect RSA operations to FIPS module including keygen,
1920 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
1923 *) Add similar low level API blocking to ciphers.
1926 *) Low level digest APIs are not approved in FIPS mode: any attempt
1927 to use these will cause a fatal error. Applications that *really* want
1928 to use them can use the private_* version instead.
1931 *) Redirect cipher operations to FIPS module for FIPS builds.
1934 *) Redirect digest operations to FIPS module for FIPS builds.
1937 *) Update build system to add "fips" flag which will link in fipscanister.o
1938 for static and shared library builds embedding a signature if needed.
1941 *) Output TLS supported curves in preference order instead of numerical
1942 order. This is currently hardcoded for the highest order curves first.
1943 This should be configurable so applications can judge speed vs strength.
1946 *) Add TLS v1.2 server support for client authentication.
1949 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
1953 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
1954 FIPS modules versions.
1957 *) Add TLS v1.2 client side support for client authentication. Keep cache
1958 of handshake records longer as we don't know the hash algorithm to use
1959 until after the certificate request message is received.
1962 *) Initial TLS v1.2 client support. Add a default signature algorithms
1963 extension including all the algorithms we support. Parse new signature
1964 format in client key exchange. Relax some ECC signing restrictions for
1965 TLS v1.2 as indicated in RFC5246.
1968 *) Add server support for TLS v1.2 signature algorithms extension. Switch
1969 to new signature format when needed using client digest preference.
1970 All server ciphersuites should now work correctly in TLS v1.2. No client
1971 support yet and no support for client certificates.
1974 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
1975 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
1976 ciphersuites. At present only RSA key exchange ciphersuites work with
1977 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
1978 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
1979 and version checking.
1982 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
1983 with this defined it will not be affected by any changes to ssl internal
1984 structures. Add several utility functions to allow openssl application
1985 to work with OPENSSL_NO_SSL_INTERN defined.
1989 [Tom Wu <tjw@cs.stanford.edu> and Ben Laurie]
1991 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
1994 *) Permit abbreviated handshakes when renegotiating using the function
1995 SSL_renegotiate_abbreviated().
1996 [Robin Seggelmann <seggelmann@fh-muenster.de>]
1998 *) Add call to ENGINE_register_all_complete() to
1999 ENGINE_load_builtin_engines(), so some implementations get used
2000 automatically instead of needing explicit application support.
2003 *) Add support for TLS key exporter as described in RFC5705.
2004 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
2006 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
2007 a few changes are required:
2009 Add SSL_OP_NO_TLSv1_1 flag.
2010 Add TLSv1_1 methods.
2011 Update version checking logic to handle version 1.1.
2012 Add explicit IV handling (ported from DTLS code).
2013 Add command line options to s_client/s_server.
2016 Changes between 1.0.0g and 1.0.0h [12 Mar 2012]
2018 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
2019 in CMS and PKCS7 code. When RSA decryption fails use a random key for
2020 content decryption and always return the same error. Note: this attack
2021 needs on average 2^20 messages so it only affects automated senders. The
2022 old behaviour can be reenabled in the CMS code by setting the
2023 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
2024 an MMA defence is not necessary.
2025 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
2026 this issue. (CVE-2012-0884)
2029 *) Fix CVE-2011-4619: make sure we really are receiving a
2030 client hello before rejecting multiple SGC restarts. Thanks to
2031 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
2034 Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
2036 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
2037 Thanks to Antonio Martin, Enterprise Secure Access Research and
2038 Development, Cisco Systems, Inc. for discovering this bug and
2039 preparing a fix. (CVE-2012-0050)
2042 Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
2044 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
2045 of the Vaudenay padding oracle attack on CBC mode encryption
2046 which enables an efficient plaintext recovery attack against
2047 the OpenSSL implementation of DTLS. Their attack exploits timing
2048 differences arising during decryption processing. A research
2049 paper describing this attack can be found at:
2050 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
2051 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
2052 Security Group at Royal Holloway, University of London
2053 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
2054 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
2055 for preparing the fix. (CVE-2011-4108)
2056 [Robin Seggelmann, Michael Tuexen]
2058 *) Clear bytes used for block padding of SSL 3.0 records.
2060 [Adam Langley (Google)]
2062 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
2063 Kadianakis <desnacked@gmail.com> for discovering this issue and
2064 Adam Langley for preparing the fix. (CVE-2011-4619)
2065 [Adam Langley (Google)]
2067 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
2068 [Andrey Kulikov <amdeich@gmail.com>]
2070 *) Prevent malformed RFC3779 data triggering an assertion failure.
2071 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
2072 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
2073 [Rob Austein <sra@hactrn.net>]
2075 *) Improved PRNG seeding for VOS.
2076 [Paul Green <Paul.Green@stratus.com>]
2078 *) Fix ssl_ciph.c set-up race.
2079 [Adam Langley (Google)]
2081 *) Fix spurious failures in ecdsatest.c.
2082 [Emilia Käsper (Google)]
2084 *) Fix the BIO_f_buffer() implementation (which was mixing different
2085 interpretations of the '..._len' fields).
2086 [Adam Langley (Google)]
2088 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
2089 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
2090 threads won't reuse the same blinding coefficients.
2092 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
2093 lock to call BN_BLINDING_invert_ex, and avoids one use of
2094 BN_BLINDING_update for each BN_BLINDING structure (previously,
2095 the last update always remained unused).
2096 [Emilia Käsper (Google)]
2098 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
2099 [Bob Buckholz (Google)]
2101 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
2103 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
2104 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
2105 [Kaspar Brand <ossl@velox.ch>]
2107 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
2108 for multi-threaded use of ECDH. (CVE-2011-3210)
2109 [Adam Langley (Google)]
2111 *) Fix x509_name_ex_d2i memory leak on bad inputs.
2114 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
2115 signature public key algorithm by using OID xref utilities instead.
2116 Before this you could only use some ECC ciphersuites with SHA1 only.
2119 *) Add protection against ECDSA timing attacks as mentioned in the paper
2120 by Billy Bob Brumley and Nicola Tuveri, see:
2122 http://eprint.iacr.org/2011/232.pdf
2124 [Billy Bob Brumley and Nicola Tuveri]
2126 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
2128 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
2129 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
2131 *) Fix bug in string printing code: if *any* escaping is enabled we must
2132 escape the escape character (backslash) or the resulting string is
2136 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
2138 *) Disable code workaround for ancient and obsolete Netscape browsers
2139 and servers: an attacker can use it in a ciphersuite downgrade attack.
2140 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
2143 *) Fixed J-PAKE implementation error, originally discovered by
2144 Sebastien Martini, further info and confirmation from Stefan
2145 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
2148 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
2150 *) Fix extension code to avoid race conditions which can result in a buffer
2151 overrun vulnerability: resumed sessions must not be modified as they can
2152 be shared by multiple threads. CVE-2010-3864
2155 *) Fix WIN32 build system to correctly link an ENGINE directory into
2159 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
2161 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
2163 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
2165 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
2167 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
2168 context. The operation can be customised via the ctrl mechanism in
2169 case ENGINEs want to include additional functionality.
2172 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
2175 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
2176 output hashes compatible with older versions of OpenSSL.
2177 [Willy Weisz <weisz@vcpc.univie.ac.at>]
2179 *) Fix compression algorithm handling: if resuming a session use the
2180 compression algorithm of the resumed session instead of determining
2181 it from client hello again. Don't allow server to change algorithm.
2184 *) Add load_crls() function to apps tidying load_certs() too. Add option
2185 to verify utility to allow additional CRLs to be included.
2188 *) Update OCSP request code to permit adding custom headers to the request:
2189 some responders need this.
2192 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
2194 [Julia Lawall <julia@diku.dk>]
2196 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
2197 needlessly dereferenced structures, used obsolete functions and
2198 didn't handle all updated verify codes correctly.
2201 *) Disable MD2 in the default configuration.
2204 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
2205 indicate the initial BIO being pushed or popped. This makes it possible
2206 to determine whether the BIO is the one explicitly called or as a result
2207 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
2208 it handles reference counts correctly and doesn't zero out the I/O bio
2209 when it is not being explicitly popped. WARNING: applications which
2210 included workarounds for the old buggy behaviour will need to be modified
2211 or they could free up already freed BIOs.
2214 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
2215 renaming to all platforms (within the 0.9.8 branch, this was
2216 done conditionally on Netware platforms to avoid a name clash).
2217 [Guenter <lists@gknw.net>]
2219 *) Add ECDHE and PSK support to DTLS.
2220 [Michael Tuexen <tuexen@fh-muenster.de>]
2222 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
2226 *) Add "missing" function EVP_MD_flags() (without this the only way to
2227 retrieve a digest flags is by accessing the structure directly. Update
2228 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
2229 or cipher is registered as in the "from" argument. Print out all
2230 registered digests in the dgst usage message instead of manually
2231 attempting to work them out.
2234 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
2235 this allows the use of compression and extensions. Change default cipher
2236 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
2237 by default unless an application cipher string requests it.
2240 *) Alter match criteria in PKCS12_parse(). It used to try to use local
2241 key ids to find matching certificates and keys but some PKCS#12 files
2242 don't follow the (somewhat unwritten) rules and this strategy fails.
2243 Now just gather all certificates together and the first private key
2244 then look for the first certificate that matches the key.
2247 *) Support use of registered digest and cipher names for dgst and cipher
2248 commands instead of having to add each one as a special case. So now
2255 openssl dgst -sha256 foo
2257 and this works for ENGINE based algorithms too.
2261 *) Update Gost ENGINE to support parameter files.
2262 [Victor B. Wagner <vitus@cryptocom.ru>]
2264 *) Support GeneralizedTime in ca utility.
2265 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
2267 *) Enhance the hash format used for certificate directory links. The new
2268 form uses the canonical encoding (meaning equivalent names will work
2269 even if they aren't identical) and uses SHA1 instead of MD5. This form
2270 is incompatible with the older format and as a result c_rehash should
2271 be used to rebuild symbolic links.
2274 *) Make PKCS#8 the default write format for private keys, replacing the
2275 traditional format. This form is standardised, more secure and doesn't
2276 include an implicit MD5 dependency.
2279 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
2280 committed to OpenSSL should pass this lot as a minimum.
2283 *) Add session ticket override functionality for use by EAP-FAST.
2284 [Jouni Malinen <j@w1.fi>]
2286 *) Modify HMAC functions to return a value. Since these can be implemented
2287 in an ENGINE errors can occur.
2290 *) Type-checked OBJ_bsearch_ex.
2293 *) Type-checked OBJ_bsearch. Also some constification necessitated
2294 by type-checking. Still to come: TXT_DB, bsearch(?),
2295 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
2299 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
2300 seconds to a tm structure directly, instead of going through OS
2301 specific date routines. This avoids any issues with OS routines such
2302 as the year 2038 bug. New *_adj() functions for ASN1 time structures
2303 and X509_time_adj_ex() to cover the extended range. The existing
2304 X509_time_adj() is still usable and will no longer have any date issues.
2307 *) Delta CRL support. New use deltas option which will attempt to locate
2308 and search any appropriate delta CRLs available.
2310 This work was sponsored by Google.
2313 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
2314 code and add additional score elements. Validate alternate CRL paths
2315 as part of the CRL checking and indicate a new error "CRL path validation
2316 error" in this case. Applications wanting additional details can use
2317 the verify callback and check the new "parent" field. If this is not
2318 NULL CRL path validation is taking place. Existing applications wont
2319 see this because it requires extended CRL support which is off by
2322 This work was sponsored by Google.
2325 *) Support for freshest CRL extension.
2327 This work was sponsored by Google.
2330 *) Initial indirect CRL support. Currently only supported in the CRLs
2331 passed directly and not via lookup. Process certificate issuer
2332 CRL entry extension and lookup CRL entries by bother issuer name
2333 and serial number. Check and process CRL issuer entry in IDP extension.
2335 This work was sponsored by Google.
2338 *) Add support for distinct certificate and CRL paths. The CRL issuer
2339 certificate is validated separately in this case. Only enabled if
2340 an extended CRL support flag is set: this flag will enable additional
2341 CRL functionality in future.
2343 This work was sponsored by Google.
2346 *) Add support for policy mappings extension.
2348 This work was sponsored by Google.
2351 *) Fixes to pathlength constraint, self issued certificate handling,
2352 policy processing to align with RFC3280 and PKITS tests.
2354 This work was sponsored by Google.
2357 *) Support for name constraints certificate extension. DN, email, DNS
2358 and URI types are currently supported.
2360 This work was sponsored by Google.
2363 *) To cater for systems that provide a pointer-based thread ID rather
2364 than numeric, deprecate the current numeric thread ID mechanism and
2365 replace it with a structure and associated callback type. This
2366 mechanism allows a numeric "hash" to be extracted from a thread ID in
2367 either case, and on platforms where pointers are larger than 'long',
2368 mixing is done to help ensure the numeric 'hash' is usable even if it
2369 can't be guaranteed unique. The default mechanism is to use "&errno"
2370 as a pointer-based thread ID to distinguish between threads.
2372 Applications that want to provide their own thread IDs should now use
2373 CRYPTO_THREADID_set_callback() to register a callback that will call
2374 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
2376 Note that ERR_remove_state() is now deprecated, because it is tied
2377 to the assumption that thread IDs are numeric. ERR_remove_state(0)
2378 to free the current thread's error state should be replaced by
2379 ERR_remove_thread_state(NULL).
2381 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
2382 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
2383 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
2384 application was previously providing a numeric thread callback that
2385 was inappropriate for distinguishing threads, then uniqueness might
2386 have been obtained with &errno that happened immediately in the
2387 intermediate development versions of OpenSSL; this is no longer the
2388 case, the numeric thread callback will now override the automatic use
2390 [Geoff Thorpe, with help from Bodo Moeller]
2392 *) Initial support for different CRL issuing certificates. This covers a
2393 simple case where the self issued certificates in the chain exist and
2394 the real CRL issuer is higher in the existing chain.
2396 This work was sponsored by Google.
2399 *) Removed effectively defunct crypto/store from the build.
2402 *) Revamp of STACK to provide stronger type-checking. Still to come:
2403 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
2404 ASN1_STRING, CONF_VALUE.
2407 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
2408 RAM on SSL connections. This option can save about 34k per idle SSL.
2411 *) Revamp of LHASH to provide stronger type-checking. Still to come:
2412 STACK, TXT_DB, bsearch, qsort.
2415 *) Initial support for Cryptographic Message Syntax (aka CMS) based
2416 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
2417 support for data, signedData, compressedData, digestedData and
2418 encryptedData, envelopedData types included. Scripts to check against
2419 RFC4134 examples draft and interop and consistency checks of many
2420 content types and variants.
2423 *) Add options to enc utility to support use of zlib compression BIO.
2426 *) Extend mk1mf to support importing of options and assembly language
2427 files from Configure script, currently only included in VC-WIN32.
2428 The assembly language rules can now optionally generate the source
2429 files from the associated perl scripts.
2432 *) Implement remaining functionality needed to support GOST ciphersuites.
2433 Interop testing has been performed using CryptoPro implementations.
2434 [Victor B. Wagner <vitus@cryptocom.ru>]
2436 *) s390x assembler pack.
2439 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
2443 *) Implement Opaque PRF Input TLS extension as specified in
2444 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
2445 official specification yet and no extension type assignment by
2446 IANA exists, this extension (for now) will have to be explicitly
2447 enabled when building OpenSSL by providing the extension number
2448 to use. For example, specify an option
2450 -DTLSEXT_TYPE_opaque_prf_input=0x9527
2452 to the "config" or "Configure" script to enable the extension,
2453 assuming extension number 0x9527 (which is a completely arbitrary
2454 and unofficial assignment based on the MD5 hash of the Internet
2455 Draft). Note that by doing so, you potentially lose
2456 interoperability with other TLS implementations since these might
2457 be using the same extension number for other purposes.
2459 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
2460 opaque PRF input value to use in the handshake. This will create
2461 an interal copy of the length-'len' string at 'src', and will
2462 return non-zero for success.
2464 To get more control and flexibility, provide a callback function
2467 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
2468 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
2472 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
2475 Callback function 'cb' will be called in handshakes, and is
2476 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
2477 Argument 'arg' is for application purposes (the value as given to
2478 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
2479 be provided to the callback function). The callback function
2480 has to return non-zero to report success: usually 1 to use opaque
2481 PRF input just if possible, or 2 to enforce use of the opaque PRF
2482 input. In the latter case, the library will abort the handshake
2483 if opaque PRF input is not successfully negotiated.
2485 Arguments 'peerinput' and 'len' given to the callback function
2486 will always be NULL and 0 in the case of a client. A server will
2487 see the client's opaque PRF input through these variables if
2488 available (NULL and 0 otherwise). Note that if the server
2489 provides an opaque PRF input, the length must be the same as the
2490 length of the client's opaque PRF input.
2492 Note that the callback function will only be called when creating
2493 a new session (session resumption can resume whatever was
2494 previously negotiated), and will not be called in SSL 2.0
2495 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
2496 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
2497 for applications that need to enforce opaque PRF input.
2501 *) Update ssl code to support digests other than SHA1+MD5 for handshake
2504 [Victor B. Wagner <vitus@cryptocom.ru>]
2506 *) Add RFC4507 support to OpenSSL. This includes the corrections in
2507 RFC4507bis. The encrypted ticket format is an encrypted encoded
2508 SSL_SESSION structure, that way new session features are automatically
2511 If a client application caches session in an SSL_SESSION structure
2512 support is transparent because tickets are now stored in the encoded
2515 The SSL_CTX structure automatically generates keys for ticket
2516 protection in servers so again support should be possible
2517 with no application modification.
2519 If a client or server wishes to disable RFC4507 support then the option
2520 SSL_OP_NO_TICKET can be set.
2522 Add a TLS extension debugging callback to allow the contents of any client
2523 or server extensions to be examined.
2525 This work was sponsored by Google.
2528 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
2529 OpenSSL should now compile cleanly on gcc 4.2
2530 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
2532 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
2533 support including streaming MAC support: this is required for GOST
2534 ciphersuite support.
2535 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
2537 *) Add option -stream to use PKCS#7 streaming in smime utility. New
2538 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
2539 to output in BER and PEM format.
2542 *) Experimental support for use of HMAC via EVP_PKEY interface. This
2543 allows HMAC to be handled via the EVP_DigestSign*() interface. The
2544 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
2545 ENGINE support for HMAC keys which are unextractable. New -mac and
2546 -macopt options to dgst utility.
2549 *) New option -sigopt to dgst utility. Update dgst to use
2550 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
2551 alternative signing paramaters such as X9.31 or PSS in the dgst
2555 *) Change ssl_cipher_apply_rule(), the internal function that does
2556 the work each time a ciphersuite string requests enabling
2557 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
2558 removing ("!foo+bar") a class of ciphersuites: Now it maintains
2559 the order of disabled ciphersuites such that those ciphersuites
2560 that most recently went from enabled to disabled not only stay
2561 in order with respect to each other, but also have higher priority
2562 than other disabled ciphersuites the next time ciphersuites are
2565 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
2566 the same ciphersuites as with "HIGH" alone, but in a specific
2567 order where the PSK ciphersuites come first (since they are the
2568 most recently disabled ciphersuites when "HIGH" is parsed).
2570 Also, change ssl_create_cipher_list() (using this new
2571 funcionality) such that between otherwise identical
2572 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
2576 *) Change ssl_create_cipher_list() so that it automatically
2577 arranges the ciphersuites in reasonable order before starting
2578 to process the rule string. Thus, the definition for "DEFAULT"
2579 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
2580 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
2581 This makes it much easier to arrive at a reasonable default order
2582 in applications for which anonymous ciphers are OK (meaning
2583 that you can't actually use DEFAULT).
2584 [Bodo Moeller; suggested by Victor Duchovni]
2586 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
2587 processing) into multiple integers instead of setting
2588 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
2589 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
2590 (These masks as well as the individual bit definitions are hidden
2591 away into the non-exported interface ssl/ssl_locl.h, so this
2592 change to the definition of the SSL_CIPHER structure shouldn't
2593 affect applications.) This give us more bits for each of these
2594 categories, so there is no longer a need to coagulate AES128 and
2595 AES256 into a single algorithm bit, and to coagulate Camellia128
2596 and Camellia256 into a single algorithm bit, which has led to all
2599 Thus, among other things, the kludge introduced in 0.9.7m and
2600 0.9.8e for masking out AES256 independently of AES128 or masking
2601 out Camellia256 independently of AES256 is not needed here in 0.9.9.
2603 With the change, we also introduce new ciphersuite aliases that
2604 so far were missing: "AES128", "AES256", "CAMELLIA128", and
2608 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
2609 Use the leftmost N bytes of the signature input if the input is
2610 larger than the prime q (with N being the size in bytes of q).
2613 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
2614 it yet and it is largely untested.
2617 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
2620 *) Initial incomplete changes to avoid need for function casts in OpenSSL
2621 some compilers (gcc 4.2 and later) reject their use. Safestack is
2622 reimplemented. Update ASN1 to avoid use of legacy functions.
2625 *) Win32/64 targets are linked with Winsock2.
2628 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
2629 to external functions. This can be used to increase CRL handling
2630 efficiency especially when CRLs are very large by (for example) storing
2631 the CRL revoked certificates in a database.
2634 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
2635 new CRLs added to a directory can be used. New command line option
2636 -verify_return_error to s_client and s_server. This causes real errors
2637 to be returned by the verify callback instead of carrying on no matter
2638 what. This reflects the way a "real world" verify callback would behave.
2641 *) GOST engine, supporting several GOST algorithms and public key formats.
2642 Kindly donated by Cryptocom.
2645 *) Partial support for Issuing Distribution Point CRL extension. CRLs
2646 partitioned by DP are handled but no indirect CRL or reason partitioning
2647 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
2648 selected via a scoring technique which handles IDP and AKID in CRLs.
2651 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
2652 will ultimately be used for all verify operations: this will remove the
2653 X509_STORE dependency on certificate verification and allow alternative
2654 lookup methods. X509_STORE based implementations of these two callbacks.
2657 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
2658 Modify get_crl() to find a valid (unexpired) CRL if possible.
2661 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
2662 this would be called X509_CRL_cmp() but that name is already used by
2663 a function that just compares CRL issuer names. Cache several CRL
2664 extensions in X509_CRL structure and cache CRLDP in X509.
2667 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
2668 this maps equivalent X509_NAME structures into a consistent structure.
2669 Name comparison can then be performed rapidly using memcmp().
2672 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
2676 *) Allow digests to supply their own micalg string for S/MIME type using
2677 the ctrl EVP_MD_CTRL_MICALG.
2680 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
2681 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
2682 ctrl. It can then customise the structure before and/or after signing
2686 *) New function OBJ_add_sigid() to allow application defined signature OIDs
2687 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
2688 to free up any added signature OIDs.
2691 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
2692 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
2693 digest and cipher tables. New options added to openssl utility:
2694 list-message-digest-algorithms and list-cipher-algorithms.
2697 *) Change the array representation of binary polynomials: the list
2698 of degrees of non-zero coefficients is now terminated with -1.
2699 Previously it was terminated with 0, which was also part of the
2700 value; thus, the array representation was not applicable to
2701 polynomials where t^0 has coefficient zero. This change makes
2702 the array representation useful in a more general context.
2705 *) Various modifications and fixes to SSL/TLS cipher string
2706 handling. For ECC, the code now distinguishes between fixed ECDH
2707 with RSA certificates on the one hand and with ECDSA certificates
2708 on the other hand, since these are separate ciphersuites. The
2709 unused code for Fortezza ciphersuites has been removed.
2711 For consistency with EDH, ephemeral ECDH is now called "EECDH"
2712 (not "ECDHE"). For consistency with the code for DH
2713 certificates, use of ECDH certificates is now considered ECDH
2714 authentication, not RSA or ECDSA authentication (the latter is
2715 merely the CA's signing algorithm and not actively used in the
2718 The temporary ciphersuite alias "ECCdraft" is no longer
2719 available, and ECC ciphersuites are no longer excluded from "ALL"
2720 and "DEFAULT". The following aliases now exist for RFC 4492
2721 ciphersuites, most of these by analogy with the DH case:
2723 kECDHr - ECDH cert, signed with RSA
2724 kECDHe - ECDH cert, signed with ECDSA
2725 kECDH - ECDH cert (signed with either RSA or ECDSA)
2726 kEECDH - ephemeral ECDH
2727 ECDH - ECDH cert or ephemeral ECDH
2733 AECDH - anonymous ECDH
2734 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
2738 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
2739 Use correct micalg parameters depending on digest(s) in signed message.
2742 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
2743 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
2746 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
2747 an engine to register a method. Add ENGINE lookups for methods and
2748 functional reference processing.
2751 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
2752 EVP_{Sign,Verify}* which allow an application to customise the signature
2756 *) New -resign option to smime utility. This adds one or more signers
2757 to an existing PKCS#7 signedData structure. Also -md option to use an
2758 alternative message digest algorithm for signing.
2761 *) Tidy up PKCS#7 routines and add new functions to make it easier to
2762 create PKCS7 structures containing multiple signers. Update smime
2763 application to support multiple signers.
2766 *) New -macalg option to pkcs12 utility to allow setting of an alternative
2770 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
2771 Reorganize PBE internals to lookup from a static table using NIDs,
2772 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
2773 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
2774 PRF which will be automatically used with PBES2.
2777 *) Replace the algorithm specific calls to generate keys in "req" with the
2781 *) Update PKCS#7 enveloped data routines to use new API. This is now
2782 supported by any public key method supporting the encrypt operation. A
2783 ctrl is added to allow the public key algorithm to examine or modify
2784 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
2788 *) Add a ctrl to asn1 method to allow a public key algorithm to express
2789 a default digest type to use. In most cases this will be SHA1 but some
2790 algorithms (such as GOST) need to specify an alternative digest. The
2791 return value indicates how strong the preference is 1 means optional and
2792 2 is mandatory (that is it is the only supported type). Modify
2793 ASN1_item_sign() to accept a NULL digest argument to indicate it should
2794 use the default md. Update openssl utilities to use the default digest
2795 type for signing if it is not explicitly indicated.
2798 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
2799 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
2800 signing method from the key type. This effectively removes the link
2801 between digests and public key types.
2804 *) Add an OID cross reference table and utility functions. Its purpose is to
2805 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
2806 rsaEncryption. This will allow some of the algorithm specific hackery
2807 needed to use the correct OID to be removed.
2810 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
2811 structures for PKCS7_sign(). They are now set up by the relevant public
2815 *) Add provisional EC pkey method with support for ECDSA and ECDH.
2818 *) Add support for key derivation (agreement) in the API, DH method and
2822 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
2823 public and private key formats. As a side effect these add additional
2824 command line functionality not previously available: DSA signatures can be
2825 generated and verified using pkeyutl and DH key support and generation in
2830 [Oliver Tappe <zooey@hirschkaefer.de>]
2832 *) New make target "install_html_docs" installs HTML renditions of the
2834 [Oliver Tappe <zooey@hirschkaefer.de>]
2836 *) New utility "genpkey" this is analogous to "genrsa" etc except it can
2837 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
2838 support key and parameter generation and add initial key generation
2839 functionality for RSA.
2842 *) Add functions for main EVP_PKEY_method operations. The undocumented
2843 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
2844 EVP_PKEY_{encrypt,decrypt}_old.
2847 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
2848 key API, doesn't do much yet.
2851 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
2852 public key algorithms. New option to openssl utility:
2853 "list-public-key-algorithms" to print out info.
2856 *) Implement the Supported Elliptic Curves Extension for
2857 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
2860 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
2861 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
2864 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
2865 utilities such as rsa, dsa, dsaparam etc except they process any key
2869 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
2870 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
2871 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
2875 *) Initial support for pluggable public key ASN1.
2876 De-spaghettify the public key ASN1 handling. Move public and private
2877 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
2878 algorithm specific handling to a single module within the relevant
2879 algorithm directory. Add functions to allow (near) opaque processing
2880 of public and private key structures.
2883 *) Implement the Supported Point Formats Extension for
2884 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
2887 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
2888 for the psk identity [hint] and the psk callback functions to the
2889 SSL_SESSION, SSL and SSL_CTX structure.
2892 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
2896 SSL_CTX_use_psk_identity_hint
2897 SSL_get_psk_identity_hint
2898 SSL_get_psk_identity
2899 SSL_use_psk_identity_hint
2901 [Mika Kousa and Pasi Eronen of Nokia Corporation]
2903 *) Add RFC 3161 compliant time stamp request creation, response generation
2904 and response verification functionality.
2905 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
2907 *) Add initial support for TLS extensions, specifically for the server_name
2908 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
2909 have new members for a host name. The SSL data structure has an
2910 additional member SSL_CTX *initial_ctx so that new sessions can be
2911 stored in that context to allow for session resumption, even after the
2912 SSL has been switched to a new SSL_CTX in reaction to a client's
2913 server_name extension.
2915 New functions (subject to change):
2917 SSL_get_servername()
2918 SSL_get_servername_type()
2921 New CTRL codes and macros (subject to change):
2923 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
2924 - SSL_CTX_set_tlsext_servername_callback()
2925 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
2926 - SSL_CTX_set_tlsext_servername_arg()
2927 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
2929 openssl s_client has a new '-servername ...' option.
2931 openssl s_server has new options '-servername_host ...', '-cert2 ...',
2932 '-key2 ...', '-servername_fatal' (subject to change). This allows
2933 testing the HostName extension for a specific single host name ('-cert'
2934 and '-key' remain fallbacks for handshakes without HostName
2935 negotiation). If the unrecognized_name alert has to be sent, this by
2936 default is a warning; it becomes fatal with the '-servername_fatal'
2939 [Peter Sylvester, Remy Allais, Christophe Renou]
2941 *) Whirlpool hash implementation is added.
2944 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
2945 bn(64,32). Because of instruction set limitations it doesn't have
2946 any negative impact on performance. This was done mostly in order
2947 to make it possible to share assembler modules, such as bn_mul_mont
2948 implementations, between 32- and 64-bit builds without hassle.
2951 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
2952 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
2956 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
2957 dedicated Montgomery multiplication procedure, is introduced.
2958 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
2959 "64-bit" performance on certain 32-bit targets.
2962 *) New option SSL_OP_NO_COMP to disable use of compression selectively
2963 in SSL structures. New SSL ctrl to set maximum send fragment size.
2964 Save memory by seeting the I/O buffer sizes dynamically instead of
2965 using the maximum available value.
2968 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
2969 in addition to the text details.
2972 *) Very, very preliminary EXPERIMENTAL support for printing of general
2973 ASN1 structures. This currently produces rather ugly output and doesn't
2974 handle several customised structures at all.
2977 *) Integrated support for PVK file format and some related formats such
2978 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
2979 these in the 'rsa' and 'dsa' utilities.
2982 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
2985 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
2986 place for the (very old) "NETSCAPE" format certificates which are now
2987 handled using new ASN1 code equivalents.
2990 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
2991 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
2992 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
2995 *) Modify CRL distribution points extension code to print out previously
2996 unsupported fields. Enhance extension setting code to allow setting of
3000 *) Add print and set support for Issuing Distribution Point CRL extension.
3003 *) Change 'Configure' script to enable Camellia by default.
3006 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
3008 *) When rejecting SSL/TLS records due to an incorrect version number, never
3009 update s->server with a new major version number. As of
3010 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
3011 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
3012 the previous behavior could result in a read attempt at NULL when
3013 receiving specific incorrect SSL/TLS records once record payload
3014 protection is active. (CVE-2010-0740)
3015 [Bodo Moeller, Adam Langley <agl@chromium.org>]
3017 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
3018 could be crashed if the relevant tables were not present (e.g. chrooted).
3019 [Tomas Hoger <thoger@redhat.com>]
3021 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
3023 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
3024 [Martin Olsson, Neel Mehta]
3026 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
3027 accommodate for stack sorting, always a write lock!).
3030 *) On some versions of WIN32 Heap32Next is very slow. This can cause
3031 excessive delays in the RAND_poll(): over a minute. As a workaround
3032 include a time check in the inner Heap32Next loop too.
3035 *) The code that handled flushing of data in SSL/TLS originally used the
3036 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
3037 the problem outlined in PR#1949. The fix suggested there however can
3038 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
3039 of Apache). So instead simplify the code to flush unconditionally.
3040 This should be fine since flushing with no data to flush is a no op.
3043 *) Handle TLS versions 2.0 and later properly and correctly use the
3044 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
3045 off ancient servers have a habit of sticking around for a while...
3048 *) Modify compression code so it frees up structures without using the
3049 ex_data callbacks. This works around a problem where some applications
3050 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
3051 restarting) then use compression (e.g. SSL with compression) later.
3052 This results in significant per-connection memory leaks and
3053 has caused some security issues including CVE-2008-1678 and
3057 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
3058 change when encrypting or decrypting.
3061 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
3062 connect and renegotiate with servers which do not support RI.
3063 Until RI is more widely deployed this option is enabled by default.
3066 *) Add "missing" ssl ctrls to clear options and mode.
3069 *) If client attempts to renegotiate and doesn't support RI respond with
3070 a no_renegotiation alert as required by RFC5746. Some renegotiating
3071 TLS clients will continue a connection gracefully when they receive
3072 the alert. Unfortunately OpenSSL mishandled this alert and would hang
3073 waiting for a server hello which it will never receive. Now we treat a
3074 received no_renegotiation alert as a fatal error. This is because
3075 applications requesting a renegotiation might well expect it to succeed
3076 and would have no code in place to handle the server denying it so the
3077 only safe thing to do is to terminate the connection.
3080 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
3081 peer supports secure renegotiation and 0 otherwise. Print out peer
3082 renegotiation support in s_client/s_server.
3085 *) Replace the highly broken and deprecated SPKAC certification method with
3086 the updated NID creation version. This should correctly handle UTF8.
3089 *) Implement RFC5746. Re-enable renegotiation but require the extension
3090 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
3091 turns out to be a bad idea. It has been replaced by
3092 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
3093 SSL_CTX_set_options(). This is really not recommended unless you
3094 know what you are doing.
3095 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
3097 *) Fixes to stateless session resumption handling. Use initial_ctx when
3098 issuing and attempting to decrypt tickets in case it has changed during
3099 servername handling. Use a non-zero length session ID when attempting
3100 stateless session resumption: this makes it possible to determine if
3101 a resumption has occurred immediately after receiving server hello
3102 (several places in OpenSSL subtly assume this) instead of later in
3106 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
3107 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
3108 fixes for a few places where the return code is not checked
3110 [Julia Lawall <julia@diku.dk>]
3112 *) Add --strict-warnings option to Configure script to include devteam
3113 warnings in other configurations.
3116 *) Add support for --libdir option and LIBDIR variable in makefiles. This
3117 makes it possible to install openssl libraries in locations which
3118 have names other than "lib", for example "/usr/lib64" which some
3120 [Steve Henson, based on patch from Jeremy Utley]
3122 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
3123 X690 8.9.12 and can produce some misleading textual output of OIDs.
3124 [Steve Henson, reported by Dan Kaminsky]
3126 *) Delete MD2 from algorithm tables. This follows the recommendation in
3127 several standards that it is not used in new applications due to
3128 several cryptographic weaknesses. For binary compatibility reasons
3129 the MD2 API is still compiled in by default.
3132 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
3136 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
3137 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
3139 [Guenter <lists@gknw.net>]
3141 *) Fix the server certificate chain building code to use X509_verify_cert(),
3142 it used to have an ad-hoc builder which was unable to cope with anything
3143 other than a simple chain.
3144 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
3146 *) Don't check self signed certificate signatures in X509_verify_cert()
3147 by default (a flag can override this): it just wastes time without
3148 adding any security. As a useful side effect self signed root CAs
3149 with non-FIPS digests are now usable in FIPS mode.
3152 *) In dtls1_process_out_of_seq_message() the check if the current message
3153 is already buffered was missing. For every new message was memory
3154 allocated, allowing an attacker to perform an denial of service attack
3155 with sending out of seq handshake messages until there is no memory
3156 left. Additionally every future messege was buffered, even if the
3157 sequence number made no sense and would be part of another handshake.
3158 So only messages with sequence numbers less than 10 in advance will be
3159 buffered. (CVE-2009-1378)
3160 [Robin Seggelmann, discovered by Daniel Mentz]
3162 *) Records are buffered if they arrive with a future epoch to be
3163 processed after finishing the corresponding handshake. There is
3164 currently no limitation to this buffer allowing an attacker to perform
3165 a DOS attack with sending records with future epochs until there is no
3166 memory left. This patch adds the pqueue_size() function to determine
3167 the size of a buffer and limits the record buffer to 100 entries.
3169 [Robin Seggelmann, discovered by Daniel Mentz]
3171 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
3172 parent structure is freed. (CVE-2009-1379)
3175 *) Handle non-blocking I/O properly in SSL_shutdown() call.
3176 [Darryl Miles <darryl-mailinglists@netbauds.net>]
3179 [Ilya O. <vrghost@gmail.com>]
3181 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
3183 *) Disable renegotiation completely - this fixes a severe security
3184 problem (CVE-2009-3555) at the cost of breaking all
3185 renegotiation. Renegotiation can be re-enabled by setting
3186 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
3187 run-time. This is really not recommended unless you know what
3191 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
3193 *) Don't set val to NULL when freeing up structures, it is freed up by
3194 underlying code. If sizeof(void *) > sizeof(long) this can result in
3195 zeroing past the valid field. (CVE-2009-0789)
3196 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
3198 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
3199 checked correctly. This would allow some invalid signed attributes to
3200 appear to verify correctly. (CVE-2009-0591)
3201 [Ivan Nestlerode <inestlerode@us.ibm.com>]
3203 *) Reject UniversalString and BMPString types with invalid lengths. This
3204 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
3205 a legal length. (CVE-2009-0590)
3208 *) Set S/MIME signing as the default purpose rather than setting it
3209 unconditionally. This allows applications to override it at the store
3213 *) Permit restricted recursion of ASN1 strings. This is needed in practice
3214 to handle some structures.
3217 *) Improve efficiency of mem_gets: don't search whole buffer each time
3219 [Jeremy Shapiro <jnshapir@us.ibm.com>]
3221 *) New -hex option for openssl rand.
3224 *) Print out UTF8String and NumericString when parsing ASN1.
3227 *) Support NumericString type for name components.
3230 *) Allow CC in the environment to override the automatically chosen
3231 compiler. Note that nothing is done to ensure flags work with the
3235 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
3237 *) Properly check EVP_VerifyFinal() and similar return values
3239 [Ben Laurie, Bodo Moeller, Google Security Team]
3241 *) Enable TLS extensions by default.
3244 *) Allow the CHIL engine to be loaded, whether the application is
3245 multithreaded or not. (This does not release the developer from the
3246 obligation to set up the dynamic locking callbacks.)
3247 [Sander Temme <sander@temme.net>]
3249 *) Use correct exit code if there is an error in dgst command.
3250 [Steve Henson; problem pointed out by Roland Dirlewanger]
3252 *) Tweak Configure so that you need to say "experimental-jpake" to enable
3253 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
3256 *) Add experimental JPAKE support, including demo authentication in
3257 s_client and s_server.
3260 *) Set the comparison function in v3_addr_canonize().
3261 [Rob Austein <sra@hactrn.net>]
3263 *) Add support for XMPP STARTTLS in s_client.
3264 [Philip Paeps <philip@freebsd.org>]
3266 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
3267 to ensure that even with this option, only ciphersuites in the
3268 server's preference list will be accepted. (Note that the option
3269 applies only when resuming a session, so the earlier behavior was
3270 just about the algorithm choice for symmetric cryptography.)
3273 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
3275 *) Fix NULL pointer dereference if a DTLS server received
3276 ChangeCipherSpec as first record (CVE-2009-1386).
3279 *) Fix a state transition in s3_srvr.c and d1_srvr.c
3280 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
3283 *) The fix in 0.9.8c that supposedly got rid of unsafe
3284 double-checked locking was incomplete for RSA blinding,
3285 addressing just one layer of what turns out to have been
3286 doubly unsafe triple-checked locking.
3288 So now fix this for real by retiring the MONT_HELPER macro
3289 in crypto/rsa/rsa_eay.c.
3291 [Bodo Moeller; problem pointed out by Marius Schilder]
3293 *) Various precautionary measures:
3295 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
3297 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
3298 (NB: This would require knowledge of the secret session ticket key
3299 to exploit, in which case you'd be SOL either way.)
3301 - Change bn_nist.c so that it will properly handle input BIGNUMs
3302 outside the expected range.
3304 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
3307 [Neel Mehta, Bodo Moeller]
3309 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
3310 the load fails. Useful for distros.
3311 [Ben Laurie and the FreeBSD team]
3313 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
3316 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
3319 *) Expand ENGINE to support engine supplied SSL client certificate functions.
3321 This work was sponsored by Logica.
3324 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
3325 keystores. Support for SSL/TLS client authentication too.
3326 Not compiled unless enable-capieng specified to Configure.
3328 This work was sponsored by Logica.
3331 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
3332 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
3333 attribute creation routines such as certifcate requests and PKCS#12
3337 Changes between 0.9.8g and 0.9.8h [28 May 2008]
3339 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
3340 handshake which could lead to a cilent crash as found using the
3341 Codenomicon TLS test suite (CVE-2008-1672)
3342 [Steve Henson, Mark Cox]
3344 *) Fix double free in TLS server name extensions which could lead to
3345 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
3348 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
3350 Clear the error queue to ensure that error entries left from
3351 older function calls do not interfere with the correct operation.
3352 [Lutz Jaenicke, Erik de Castro Lopo]
3354 *) Remove root CA certificates of commercial CAs:
3356 The OpenSSL project does not recommend any specific CA and does not
3357 have any policy with respect to including or excluding any CA.
3358 Therefore it does not make any sense to ship an arbitrary selection
3359 of root CA certificates with the OpenSSL software.
3362 *) RSA OAEP patches to fix two separate invalid memory reads.
3363 The first one involves inputs when 'lzero' is greater than
3364 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
3365 before the beginning of from). The second one involves inputs where
3366 the 'db' section contains nothing but zeroes (there is a one-byte
3367 invalid read after the end of 'db').
3368 [Ivan Nestlerode <inestlerode@us.ibm.com>]
3370 *) Partial backport from 0.9.9-dev:
3372 Introduce bn_mul_mont (dedicated Montgomery multiplication
3373 procedure) as a candidate for BIGNUM assembler implementation.
3374 While 0.9.9-dev uses assembler for various architectures, only
3375 x86_64 is available by default here in the 0.9.8 branch, and
3376 32-bit x86 is available through a compile-time setting.
3378 To try the 32-bit x86 assembler implementation, use Configure
3379 option "enable-montasm" (which exists only for this backport).
3381 As "enable-montasm" for 32-bit x86 disclaims code stability
3382 anyway, in this constellation we activate additional code
3383 backported from 0.9.9-dev for further performance improvements,
3384 namely BN_from_montgomery_word. (To enable this otherwise,
3385 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
3387 [Andy Polyakov (backport partially by Bodo Moeller)]
3389 *) Add TLS session ticket callback. This allows an application to set
3390 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
3391 values. This is useful for key rollover for example where several key
3392 sets may exist with different names.
3395 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
3396 This was broken until now in 0.9.8 releases, such that the only way
3397 a registered ENGINE could be used (assuming it initialises
3398 successfully on the host) was to explicitly set it as the default
3399 for the relevant algorithms. This is in contradiction with 0.9.7
3400 behaviour and the documentation. With this fix, when an ENGINE is
3401 registered into a given algorithm's table of implementations, the
3402 'uptodate' flag is reset so that auto-discovery will be used next
3403 time a new context for that algorithm attempts to select an
3405 [Ian Lister (tweaked by Geoff Thorpe)]
3407 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
3408 implemention in the following ways:
3410 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
3413 Lack of BER streaming support means one pass streaming processing is
3414 only supported if data is detached: setting the streaming flag is
3415 ignored for embedded content.
3417 CMS support is disabled by default and must be explicitly enabled
3418 with the enable-cms configuration option.
3421 *) Update the GMP engine glue to do direct copies between BIGNUM and
3422 mpz_t when openssl and GMP use the same limb size. Otherwise the
3423 existing "conversion via a text string export" trick is still used.
3424 [Paul Sheer <paulsheer@gmail.com>]
3426 *) Zlib compression BIO. This is a filter BIO which compressed and
3427 uncompresses any data passed through it.
3430 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
3431 RFC3394 compatible AES key wrapping.
3434 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
3435 sets string data without copying. X509_ALGOR_set0() and
3436 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
3437 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
3438 from an X509_ATTRIBUTE structure optionally checking it occurs only
3439 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
3443 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
3444 to get the expected BN_FLG_CONSTTIME behavior.
3445 [Bodo Moeller (Google)]
3449 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
3450 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
3451 - added some more tests to do_tests.pl
3452 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
3453 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
3454 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
3455 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
3456 - various changes to netware.pl to enable gcc-cross builds on Win32
3458 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
3459 - various changes to fix missing prototype warnings
3460 - fixed x86nasm.pl to create correct asm files for NASM COFF output
3461 - added AES, WHIRLPOOL and CPUID assembler code to build files
3462 - added missing AES assembler make rules to mk1mf.pl
3463 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
3464 [Guenter Knauf <eflash@gmx.net>]
3466 *) Implement certificate status request TLS extension defined in RFC3546.
3467 A client can set the appropriate parameters and receive the encoded
3468 OCSP response via a callback. A server can query the supplied parameters
3469 and set the encoded OCSP response in the callback. Add simplified examples
3470 to s_client and s_server.
3473 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
3475 *) Fix various bugs:
3476 + Binary incompatibility of ssl_ctx_st structure
3477 + DTLS interoperation with non-compliant servers
3478 + Don't call get_session_cb() without proposed session
3479 + Fix ia64 assembler code
3480 [Andy Polyakov, Steve Henson]
3482 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
3484 *) DTLS Handshake overhaul. There were longstanding issues with
3485 OpenSSL DTLS implementation, which were making it impossible for
3486 RFC 4347 compliant client to communicate with OpenSSL server.
3487 Unfortunately just fixing these incompatibilities would "cut off"
3488 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
3489 server keeps tolerating non RFC compliant syntax. The opposite is
3490 not true, 0.9.8f client can not communicate with earlier server.
3491 This update even addresses CVE-2007-4995.
3494 *) Changes to avoid need for function casts in OpenSSL: some compilers
3495 (gcc 4.2 and later) reject their use.
3496 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
3499 *) Add RFC4507 support to OpenSSL. This includes the corrections in
3500 RFC4507bis. The encrypted ticket format is an encrypted encoded
3501 SSL_SESSION structure, that way new session features are automatically
3504 If a client application caches session in an SSL_SESSION structure
3505 support is transparent because tickets are now stored in the encoded
3508 The SSL_CTX structure automatically generates keys for ticket
3509 protection in servers so again support should be possible
3510 with no application modification.
3512 If a client or server wishes to disable RFC4507 support then the option
3513 SSL_OP_NO_TICKET can be set.
3515 Add a TLS extension debugging callback to allow the contents of any client
3516 or server extensions to be examined.
3518 This work was sponsored by Google.
3521 *) Add initial support for TLS extensions, specifically for the server_name
3522 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
3523 have new members for a host name. The SSL data structure has an
3524 additional member SSL_CTX *initial_ctx so that new sessions can be
3525 stored in that context to allow for session resumption, even after the
3526 SSL has been switched to a new SSL_CTX in reaction to a client's
3527 server_name extension.
3529 New functions (subject to change):
3531 SSL_get_servername()
3532 SSL_get_servername_type()
3535 New CTRL codes and macros (subject to change):
3537 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
3538 - SSL_CTX_set_tlsext_servername_callback()
3539 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
3540 - SSL_CTX_set_tlsext_servername_arg()
3541 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
3543 openssl s_client has a new '-servername ...' option.
3545 openssl s_server has new options '-servername_host ...', '-cert2 ...',
3546 '-key2 ...', '-servername_fatal' (subject to change). This allows
3547 testing the HostName extension for a specific single host name ('-cert'
3548 and '-key' remain fallbacks for handshakes without HostName
3549 negotiation). If the unrecognized_name alert has to be sent, this by
3550 default is a warning; it becomes fatal with the '-servername_fatal'
3553 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
3555 *) Add AES and SSE2 assembly language support to VC++ build.
3558 *) Mitigate attack on final subtraction in Montgomery reduction.
3561 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
3562 (which previously caused an internal error).
3565 *) Squeeze another 10% out of IGE mode when in != out.
3568 *) AES IGE mode speedup.
3569 [Dean Gaudet (Google)]
3571 *) Add the Korean symmetric 128-bit cipher SEED (see
3572 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
3573 add SEED ciphersuites from RFC 4162:
3575 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
3576 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
3577 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
3578 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
3580 To minimize changes between patchlevels in the OpenSSL 0.9.8
3581 series, SEED remains excluded from compilation unless OpenSSL
3582 is configured with 'enable-seed'.
3583 [KISA, Bodo Moeller]
3585 *) Mitigate branch prediction attacks, which can be practical if a
3586 single processor is shared, allowing a spy process to extract
3587 information. For detailed background information, see
3588 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
3589 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
3590 and Necessary Software Countermeasures"). The core of the change
3591 are new versions BN_div_no_branch() and
3592 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
3593 respectively, which are slower, but avoid the security-relevant
3594 conditional branches. These are automatically called by BN_div()
3595 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
3596 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
3597 remove a conditional branch.
3599 BN_FLG_CONSTTIME is the new name for the previous
3600 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
3601 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
3602 in the exponent causes BN_mod_exp_mont() to use the alternative
3603 implementation in BN_mod_exp_mont_consttime().) The old name
3604 remains as a deprecated alias.
3606 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
3607 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
3608 constant-time implementations for more than just exponentiation.
3609 Here too the old name is kept as a deprecated alias.
3611 BN_BLINDING_new() will now use BN_dup() for the modulus so that
3612 the BN_BLINDING structure gets an independent copy of the
3613 modulus. This means that the previous "BIGNUM *m" argument to
3614 BN_BLINDING_new() and to BN_BLINDING_create_param() now
3615 essentially becomes "const BIGNUM *m", although we can't actually
3616 change this in the header file before 0.9.9. It allows
3617 RSA_setup_blinding() to use BN_with_flags() on the modulus to
3618 enable BN_FLG_CONSTTIME.
3620 [Matthew D Wood (Intel Corp)]
3622 *) In the SSL/TLS server implementation, be strict about session ID
3623 context matching (which matters if an application uses a single
3624 external cache for different purposes). Previously,
3625 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
3626 set. This did ensure strict client verification, but meant that,
3627 with applications using a single external cache for quite
3628 different requirements, clients could circumvent ciphersuite
3629 restrictions for a given session ID context by starting a session
3630 in a different context.
3633 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
3634 a ciphersuite string such as "DEFAULT:RSA" cannot enable
3635 authentication-only ciphersuites.
3638 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
3639 not complete and could lead to a possible single byte overflow
3640 (CVE-2007-5135) [Ben Laurie]
3642 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
3644 *) Since AES128 and AES256 (and similarly Camellia128 and
3645 Camellia256) share a single mask bit in the logic of
3646 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
3647 kludge to work properly if AES128 is available and AES256 isn't
3648 (or if Camellia128 is available and Camellia256 isn't).
3651 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
3652 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
3653 When a point or a seed is encoded in a BIT STRING, we need to
3654 prevent the removal of trailing zero bits to get the proper DER
3655 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
3656 of a NamedBitList, for which trailing 0 bits need to be removed.)
3659 *) Have SSL/TLS server implementation tolerate "mismatched" record
3660 protocol version while receiving ClientHello even if the
3661 ClientHello is fragmented. (The server can't insist on the
3662 particular protocol version it has chosen before the ServerHello
3663 message has informed the client about his choice.)
3666 *) Add RFC 3779 support.
3667 [Rob Austein for ARIN, Ben Laurie]
3669 *) Load error codes if they are not already present instead of using a
3670 static variable. This allows them to be cleanly unloaded and reloaded.
3671 Improve header file function name parsing.
3674 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
3675 or CAPABILITY handshake as required by RFCs.
3678 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
3680 *) Introduce limits to prevent malicious keys being able to
3681 cause a denial of service. (CVE-2006-2940)
3682 [Steve Henson, Bodo Moeller]
3684 *) Fix ASN.1 parsing of certain invalid structures that can result
3685 in a denial of service. (CVE-2006-2937) [Steve Henson]
3687 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
3688 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
3690 *) Fix SSL client code which could crash if connecting to a
3691 malicious SSLv2 server. (CVE-2006-4343)
3692 [Tavis Ormandy and Will Drewry, Google Security Team]
3694 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
3695 match only those. Before that, "AES256-SHA" would be interpreted
3696 as a pattern and match "AES128-SHA" too (since AES128-SHA got
3697 the same strength classification in 0.9.7h) as we currently only
3698 have a single AES bit in the ciphersuite description bitmap.
3699 That change, however, also applied to ciphersuite strings such as
3700 "RC4-MD5" that intentionally matched multiple ciphersuites --
3701 namely, SSL 2.0 ciphersuites in addition to the more common ones
3702 from SSL 3.0/TLS 1.0.
3704 So we change the selection algorithm again: Naming an explicit
3705 ciphersuite selects this one ciphersuite, and any other similar
3706 ciphersuite (same bitmap) from *other* protocol versions.
3707 Thus, "RC4-MD5" again will properly select both the SSL 2.0
3708 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
3710 Since SSL 2.0 does not have any ciphersuites for which the
3711 128/256 bit distinction would be relevant, this works for now.
3712 The proper fix will be to use different bits for AES128 and
3713 AES256, which would have avoided the problems from the beginning;
3714 however, bits are scarce, so we can only do this in a new release
3715 (not just a patchlevel) when we can change the SSL_CIPHER
3716 definition to split the single 'unsigned long mask' bitmap into
3717 multiple values to extend the available space.
3721 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
3723 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
3724 (CVE-2006-4339) [Ben Laurie and Google Security Team]
3726 *) Add AES IGE and biIGE modes.
3729 *) Change the Unix randomness entropy gathering to use poll() when
3730 possible instead of select(), since the latter has some
3731 undesirable limitations.
3732 [Darryl Miles via Richard Levitte and Bodo Moeller]
3734 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
3735 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
3736 cannot be implicitly activated as part of, e.g., the "AES" alias.
3737 However, please upgrade to OpenSSL 0.9.9[-dev] for
3738 non-experimental use of the ECC ciphersuites to get TLS extension
3739 support, which is required for curve and point format negotiation
3740 to avoid potential handshake problems.
3743 *) Disable rogue ciphersuites:
3745 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
3746 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
3747 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
3749 The latter two were purportedly from
3750 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
3753 Also deactivate the remaining ciphersuites from
3754 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
3755 unofficial, and the ID has long expired.
3758 *) Fix RSA blinding Heisenbug (problems sometimes occured on
3759 dual-core machines) and other potential thread-safety issues.
3762 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
3763 versions), which is now available for royalty-free use
3764 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
3765 Also, add Camellia TLS ciphersuites from RFC 4132.
3767 To minimize changes between patchlevels in the OpenSSL 0.9.8
3768 series, Camellia remains excluded from compilation unless OpenSSL
3769 is configured with 'enable-camellia'.
3772 *) Disable the padding bug check when compression is in use. The padding
3773 bug check assumes the first packet is of even length, this is not
3774 necessarily true if compresssion is enabled and can result in false
3775 positives causing handshake failure. The actual bug test is ancient
3776 code so it is hoped that implementations will either have fixed it by
3777 now or any which still have the bug do not support compression.
3780 Changes between 0.9.8a and 0.9.8b [04 May 2006]
3782 *) When applying a cipher rule check to see if string match is an explicit
3783 cipher suite and only match that one cipher suite if it is.
3786 *) Link in manifests for VC++ if needed.
3787 [Austin Ziegler <halostatue@gmail.com>]
3789 *) Update support for ECC-based TLS ciphersuites according to
3790 draft-ietf-tls-ecc-12.txt with proposed changes (but without
3791 TLS extensions, which are supported starting with the 0.9.9
3792 branch, not in the OpenSSL 0.9.8 branch).
3795 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
3796 opaque EVP_CIPHER_CTX handling.
3799 *) Fixes and enhancements to zlib compression code. We now only use
3800 "zlib1.dll" and use the default __cdecl calling convention on Win32
3801 to conform with the standards mentioned here:
3802 http://www.zlib.net/DLL_FAQ.txt
3803 Static zlib linking now works on Windows and the new --with-zlib-include
3804 --with-zlib-lib options to Configure can be used to supply the location
3805 of the headers and library. Gracefully handle case where zlib library
3809 *) Several fixes and enhancements to the OID generation code. The old code
3810 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
3811 handle numbers larger than ULONG_MAX, truncated printing and had a
3812 non standard OBJ_obj2txt() behaviour.
3815 *) Add support for building of engines under engine/ as shared libraries
3816 under VC++ build system.
3819 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
3820 Hopefully, we will not see any false combination of paths any more.
3823 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
3825 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
3826 (part of SSL_OP_ALL). This option used to disable the
3827 countermeasure against man-in-the-middle protocol-version
3828 rollback in the SSL 2.0 server implementation, which is a bad
3829 idea. (CVE-2005-2969)
3831 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
3832 for Information Security, National Institute of Advanced Industrial
3833 Science and Technology [AIST], Japan)]
3835 *) Add two function to clear and return the verify parameter flags.
3838 *) Keep cipherlists sorted in the source instead of sorting them at
3839 runtime, thus removing the need for a lock.
3842 *) Avoid some small subgroup attacks in Diffie-Hellman.
3843 [Nick Mathewson and Ben Laurie]
3845 *) Add functions for well-known primes.
3848 *) Extended Windows CE support.
3849 [Satoshi Nakamura and Andy Polyakov]
3851 *) Initialize SSL_METHOD structures at compile time instead of during
3852 runtime, thus removing the need for a lock.
3855 *) Make PKCS7_decrypt() work even if no certificate is supplied by
3856 attempting to decrypt each encrypted key in turn. Add support to
3860 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
3862 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
3865 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
3868 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
3869 key into the same file any more.
3872 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
3875 *) Add -utf8 command line and config file option to 'ca'.
3876 [Stefan <stf@udoma.org]
3878 *) Removed the macro des_crypt(), as it seems to conflict with some
3879 libraries. Use DES_crypt().
3882 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
3883 involves renaming the source and generated shared-libs for
3884 both. The engines will accept the corrected or legacy ids
3885 ('ncipher' and '4758_cca' respectively) when binding. NB,
3886 this only applies when building 'shared'.
3887 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
3889 *) Add attribute functions to EVP_PKEY structure. Modify
3890 PKCS12_create() to recognize a CSP name attribute and
3891 use it. Make -CSP option work again in pkcs12 utility.
3894 *) Add new functionality to the bn blinding code:
3895 - automatic re-creation of the BN_BLINDING parameters after
3896 a fixed number of uses (currently 32)
3897 - add new function for parameter creation
3898 - introduce flags to control the update behaviour of the
3899 BN_BLINDING parameters
3900 - hide BN_BLINDING structure
3901 Add a second BN_BLINDING slot to the RSA structure to improve
3902 performance when a single RSA object is shared among several
3906 *) Add support for DTLS.
3907 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
3909 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
3910 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
3913 *) Remove buggy and incomplete DH cert support from
3914 ssl/ssl_rsa.c and ssl/s3_both.c
3917 *) Use SHA-1 instead of MD5 as the default digest algorithm for
3918 the apps/openssl applications.
3921 *) Compile clean with "-Wall -Wmissing-prototypes
3922 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
3923 DEBUG_SAFESTACK must also be set.
3926 *) Change ./Configure so that certain algorithms can be disabled by default.
3927 The new counterpiece to "no-xxx" is "enable-xxx".
3929 The patented RC5 and MDC2 algorithms will now be disabled unless
3930 "enable-rc5" and "enable-mdc2", respectively, are specified.
3932 (IDEA remains enabled despite being patented. This is because IDEA
3933 is frequently required for interoperability, and there is no license
3934 fee for non-commercial use. As before, "no-idea" can be used to
3935 avoid this algorithm.)
3939 *) Add processing of proxy certificates (see RFC 3820). This work was
3940 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
3941 EGEE (Enabling Grids for E-science in Europe).
3944 *) RC4 performance overhaul on modern architectures/implementations, such
3945 as Intel P4, IA-64 and AMD64.
3948 *) New utility extract-section.pl. This can be used specify an alternative
3949 section number in a pod file instead of having to treat each file as
3950 a separate case in Makefile. This can be done by adding two lines to the
3953 =for comment openssl_section:XXX
3955 The blank line is mandatory.
3959 *) New arguments -certform, -keyform and -pass for s_client and s_server
3960 to allow alternative format key and certificate files and passphrase
3964 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
3965 update associated structures and add various utility functions.
3967 Add new policy related verify parameters, include policy checking in
3968 standard verify code. Enhance 'smime' application with extra parameters
3969 to support policy checking and print out.
3972 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
3973 Nehemiah processors. These extensions support AES encryption in hardware
3974 as well as RNG (though RNG support is currently disabled).
3975 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
3977 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
3980 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
3981 [Andy Polyakov and a number of other people]
3983 *) Improved PowerPC platform support. Most notably BIGNUM assembler
3984 implementation contributed by IBM.
3985 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
3987 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
3988 exponent rather than 'unsigned long'. There is a corresponding change to
3989 the new 'rsa_keygen' element of the RSA_METHOD structure.
3990 [Jelte Jansen, Geoff Thorpe]
3992 *) Functionality for creating the initial serial number file is now
3993 moved from CA.pl to the 'ca' utility with a new option -create_serial.
3995 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
3996 number file to 1, which is bound to cause problems. To avoid
3997 the problems while respecting compatibility between different 0.9.7
3998 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
3999 CA.pl for serial number initialization. With the new release 0.9.8,
4000 we can fix the problem directly in the 'ca' utility.)
4003 *) Reduced header interdepencies by declaring more opaque objects in
4004 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
4005 give fewer recursive includes, which could break lazy source code - so
4006 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
4007 developers should define this symbol when building and using openssl to
4008 ensure they track the recommended behaviour, interfaces, [etc], but
4009 backwards-compatible behaviour prevails when this isn't defined.
4012 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
4015 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
4016 This will generate a random key of the appropriate length based on the
4017 cipher context. The EVP_CIPHER can provide its own random key generation
4018 routine to support keys of a specific form. This is used in the des and
4019 3des routines to generate a key of the correct parity. Update S/MIME
4020 code to use new functions and hence generate correct parity DES keys.
4021 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
4022 valid (weak or incorrect parity).
4025 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
4026 as looking them up. This is useful when the verified structure may contain
4027 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
4028 present unless the new PKCS7_NO_CRL flag is asserted.
4031 *) Extend ASN1 oid configuration module. It now additionally accepts the
4034 shortName = some long name, 1.2.3.4
4037 *) Reimplemented the BN_CTX implementation. There is now no more static
4038 limitation on the number of variables it can handle nor the depth of the
4039 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
4040 information can now expand as required, and rather than having a single
4041 static array of bignums, BN_CTX now uses a linked-list of such arrays
4042 allowing it to expand on demand whilst maintaining the usefulness of
4043 BN_CTX's "bundling".
4046 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
4047 to allow all RSA operations to function using a single BN_CTX.
4050 *) Preliminary support for certificate policy evaluation and checking. This
4051 is initially intended to pass the tests outlined in "Conformance Testing
4052 of Relying Party Client Certificate Path Processing Logic" v1.07.
4055 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
4056 remained unused and not that useful. A variety of other little bignum
4057 tweaks and fixes have also been made continuing on from the audit (see
4061 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
4062 associated ASN1, EVP and SSL functions and old ASN1 macros.
4065 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
4066 and this should never fail. So the return value from the use of
4067 BN_set_word() (which can fail due to needless expansion) is now deprecated;
4068 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
4071 *) BN_CTX_get() should return zero-valued bignums, providing the same
4072 initialised value as BN_new().
4073 [Geoff Thorpe, suggested by Ulf Möller]
4075 *) Support for inhibitAnyPolicy certificate extension.
4078 *) An audit of the BIGNUM code is underway, for which debugging code is
4079 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
4080 is considered valid when processing BIGNUMs, and causes execution to
4081 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
4082 further steps are taken to deliberately pollute unused data in BIGNUM
4083 structures to try and expose faulty code further on. For now, openssl will
4084 (in its default mode of operation) continue to tolerate the inconsistent
4085 forms that it has tolerated in the past, but authors and packagers should
4086 consider trying openssl and their own applications when compiled with
4087 these debugging symbols defined. It will help highlight potential bugs in
4088 their own code, and will improve the test coverage for OpenSSL itself. At
4089 some point, these tighter rules will become openssl's default to improve
4090 maintainability, though the assert()s and other overheads will remain only
4091 in debugging configurations. See bn.h for more details.
4092 [Geoff Thorpe, Nils Larsch, Ulf Möller]
4094 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
4095 that can only be obtained through BN_CTX_new() (which implicitly
4096 initialises it). The presence of this function only made it possible
4097 to overwrite an existing structure (and cause memory leaks).
4100 *) Because of the callback-based approach for implementing LHASH as a
4101 template type, lh_insert() adds opaque objects to hash-tables and
4102 lh_doall() or lh_doall_arg() are typically used with a destructor callback
4103 to clean up those corresponding objects before destroying the hash table
4104 (and losing the object pointers). So some over-zealous constifications in
4105 LHASH have been relaxed so that lh_insert() does not take (nor store) the
4106 objects as "const" and the lh_doall[_arg] callback wrappers are not
4107 prototyped to have "const" restrictions on the object pointers they are
4108 given (and so aren't required to cast them away any more).
4111 *) The tmdiff.h API was so ugly and minimal that our own timing utility
4112 (speed) prefers to use its own implementation. The two implementations
4113 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
4114 its object type properly exposed (MS_TM) instead of casting to/from "char
4115 *". This may still change yet if someone realises MS_TM and "ms_time_***"
4116 aren't necessarily the greatest nomenclatures - but this is what was used
4117 internally to the implementation so I've used that for now.
4120 *) Ensure that deprecated functions do not get compiled when
4121 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
4122 the self-tests were still using deprecated key-generation functions so
4123 these have been updated also.
4126 *) Reorganise PKCS#7 code to separate the digest location functionality
4127 into PKCS7_find_digest(), digest addition into PKCS7_bio_add_digest().
4128 New function PKCS7_set_digest() to set the digest type for PKCS#7
4129 digestedData type. Add additional code to correctly generate the
4130 digestedData type and add support for this type in PKCS7 initialization
4134 *) New function PKCS7_set0_type_other() this initializes a PKCS7
4135 structure of type "other".
4138 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
4139 sure the loop does correctly stop and breaking ("division by zero")
4140 modulus operations are not performed. The (pre-generated) prime
4141 table crypto/bn/bn_prime.h was already correct, but it could not be
4142 re-generated on some platforms because of the "division by zero"
4143 situation in the script.
4144 [Ralf S. Engelschall]
4146 *) Update support for ECC-based TLS ciphersuites according to
4147 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
4148 SHA-1 now is only used for "small" curves (where the
4149 representation of a field element takes up to 24 bytes); for
4150 larger curves, the field element resulting from ECDH is directly
4151 used as premaster secret.
4152 [Douglas Stebila (Sun Microsystems Laboratories)]
4154 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
4155 curve secp160r1 to the tests.
4156 [Douglas Stebila (Sun Microsystems Laboratories)]
4158 *) Add the possibility to load symbols globally with DSO.
4159 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
4161 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
4162 control of the error stack.
4165 *) Add support for STORE in ENGINE.
4168 *) Add the STORE type. The intention is to provide a common interface
4169 to certificate and key stores, be they simple file-based stores, or
4170 HSM-type store, or LDAP stores, or...
4171 NOTE: The code is currently UNTESTED and isn't really used anywhere.
4174 *) Add a generic structure called OPENSSL_ITEM. This can be used to
4175 pass a list of arguments to any function as well as provide a way
4176 for a function to pass data back to the caller.
4179 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
4180 works like BUF_strdup() but can be used to duplicate a portion of
4181 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
4185 *) Add the function sk_find_ex() which works like sk_find(), but will
4186 return an index to an element even if an exact match couldn't be
4187 found. The index is guaranteed to point at the element where the
4188 searched-for key would be inserted to preserve sorting order.
4191 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
4192 takes an extra flags argument for optional functionality. Currently,
4193 the following flags are defined:
4195 OBJ_BSEARCH_VALUE_ON_NOMATCH
4196 This one gets OBJ_bsearch_ex() to return a pointer to the first
4197 element where the comparing function returns a negative or zero
4200 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
4201 This one gets OBJ_bsearch_ex() to return a pointer to the first
4202 element where the comparing function returns zero. This is useful
4203 if there are more than one element where the comparing function
4207 *) Make it possible to create self-signed certificates with 'openssl ca'
4208 in such a way that the self-signed certificate becomes part of the
4209 CA database and uses the same mechanisms for serial number generation
4210 as all other certificate signing. The new flag '-selfsign' enables
4211 this functionality. Adapt CA.sh and CA.pl.in.
4214 *) Add functionality to check the public key of a certificate request
4215 against a given private. This is useful to check that a certificate
4216 request can be signed by that key (self-signing).
4219 *) Make it possible to have multiple active certificates with the same
4220 subject in the CA index file. This is done only if the keyword
4221 'unique_subject' is set to 'no' in the main CA section (default
4222 if 'CA_default') of the configuration file. The value is saved
4223 with the database itself in a separate index attribute file,
4224 named like the index file with '.attr' appended to the name.
4227 *) Generate muti valued AVAs using '+' notation in config files for
4231 *) Support for nameConstraints certificate extension.
4234 *) Support for policyConstraints certificate extension.
4237 *) Support for policyMappings certificate extension.
4240 *) Make sure the default DSA_METHOD implementation only uses its
4241 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
4242 and change its own handlers to be NULL so as to remove unnecessary
4243 indirection. This lets alternative implementations fallback to the
4244 default implementation more easily.
4247 *) Support for directoryName in GeneralName related extensions
4251 *) Make it possible to link applications using Makefile.shared.
4252 Make that possible even when linking against static libraries!
4255 *) Support for single pass processing for S/MIME signing. This now
4256 means that S/MIME signing can be done from a pipe, in addition
4257 cleartext signing (multipart/signed type) is effectively streaming
4258 and the signed data does not need to be all held in memory.
4260 This is done with a new flag PKCS7_STREAM. When this flag is set
4261 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
4262 is done after the data is output (and digests calculated) in
4263 SMIME_write_PKCS7().
4266 *) Add full support for -rpath/-R, both in shared libraries and
4267 applications, at least on the platforms where it's known how
4271 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
4272 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
4273 will now compute a table of multiples of the generator that
4274 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
4275 faster (notably in the case of a single point multiplication,
4276 scalar * generator).
4277 [Nils Larsch, Bodo Moeller]
4279 *) IPv6 support for certificate extensions. The various extensions
4280 which use the IP:a.b.c.d can now take IPv6 addresses using the
4281 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
4285 *) Added an ENGINE that implements RSA by performing private key
4286 exponentiations with the GMP library. The conversions to and from
4287 GMP's mpz_t format aren't optimised nor are any montgomery forms
4288 cached, and on x86 it appears OpenSSL's own performance has caught up.
4289 However there are likely to be other architectures where GMP could
4290 provide a boost. This ENGINE is not built in by default, but it can be
4291 specified at Configure time and should be accompanied by the necessary
4292 linker additions, eg;
4293 ./config -DOPENSSL_USE_GMP -lgmp
4296 *) "openssl engine" will not display ENGINE/DSO load failure errors when
4297 testing availability of engines with "-t" - the old behaviour is
4298 produced by increasing the feature's verbosity with "-tt".
4301 *) ECDSA routines: under certain error conditions uninitialized BN objects
4302 could be freed. Solution: make sure initialization is performed early
4303 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
4307 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
4308 and DH_METHOD (eg. by ENGINE implementations) to override the normal
4309 software implementations. For DSA and DH, parameter generation can
4310 also be overriden by providing the appropriate method callbacks.
4313 *) Change the "progress" mechanism used in key-generation and
4314 primality testing to functions that take a new BN_GENCB pointer in
4315 place of callback/argument pairs. The new API functions have "_ex"
4316 postfixes and the older functions are reimplemented as wrappers for
4317 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
4318 declarations of the old functions to help (graceful) attempts to
4319 migrate to the new functions. Also, the new key-generation API
4320 functions operate on a caller-supplied key-structure and return
4321 success/failure rather than returning a key or NULL - this is to
4322 help make "keygen" another member function of RSA_METHOD etc.
4324 Example for using the new callback interface:
4326 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
4330 BN_GENCB_set(&my_cb, my_callback, my_arg);
4332 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
4333 /* For the meaning of a, b in calls to my_callback(), see the
4334 * documentation of the function that calls the callback.
4335 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
4336 * my_callback should return 1 if it wants BN_is_prime_ex()
4337 * to continue, or 0 to stop.
4342 *) Change the ZLIB compression method to be stateful, and make it
4343 available to TLS with the number defined in
4344 draft-ietf-tls-compression-04.txt.
4347 *) Add the ASN.1 structures and functions for CertificatePair, which
4348 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
4350 CertificatePair ::= SEQUENCE {
4351 forward [0] Certificate OPTIONAL,
4352 reverse [1] Certificate OPTIONAL,
4353 -- at least one of the pair shall be present -- }
4355 Also implement the PEM functions to read and write certificate
4356 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
4358 This needed to be defined, mostly for the sake of the LDAP
4359 attribute crossCertificatePair, but may prove useful elsewhere as
4363 *) Make it possible to inhibit symlinking of shared libraries in
4364 Makefile.shared, for Cygwin's sake.
4367 *) Extend the BIGNUM API by creating a function
4368 void BN_set_negative(BIGNUM *a, int neg);
4369 and a macro that behave like
4370 int BN_is_negative(const BIGNUM *a);
4372 to avoid the need to access 'a->neg' directly in applications.
4375 *) Implement fast modular reduction for pseudo-Mersenne primes
4376 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
4377 EC_GROUP_new_curve_GFp() will now automatically use this
4379 [Nils Larsch <nla@trustcenter.de>]
4381 *) Add new lock type (CRYPTO_LOCK_BN).
4384 *) Change the ENGINE framework to automatically load engines
4385 dynamically from specific directories unless they could be
4386 found to already be built in or loaded. Move all the
4387 current engines except for the cryptodev one to a new
4389 The engines in engines/ are built as shared libraries if
4390 the "shared" options was given to ./Configure or ./config.
4391 Otherwise, they are inserted in libcrypto.a.
4392 /usr/local/ssl/engines is the default directory for dynamic
4393 engines, but that can be overriden at configure time through
4394 the usual use of --prefix and/or --openssldir, and at run
4395 time with the environment variable OPENSSL_ENGINES.
4396 [Geoff Thorpe and Richard Levitte]
4398 *) Add Makefile.shared, a helper makefile to build shared
4399 libraries. Adapt Makefile.org.
4402 *) Add version info to Win32 DLLs.
4403 [Peter 'Luna' Runestig" <peter@runestig.com>]
4405 *) Add new 'medium level' PKCS#12 API. Certificates and keys
4406 can be added using this API to created arbitrary PKCS#12
4407 files while avoiding the low level API.
4409 New options to PKCS12_create(), key or cert can be NULL and
4410 will then be omitted from the output file. The encryption
4411 algorithm NIDs can be set to -1 for no encryption, the mac
4412 iteration count can be set to 0 to omit the mac.
4414 Enhance pkcs12 utility by making the -nokeys and -nocerts
4415 options work when creating a PKCS#12 file. New option -nomac
4416 to omit the mac, NONE can be set for an encryption algorithm.
4417 New code is modified to use the enhanced PKCS12_create()
4418 instead of the low level API.
4421 *) Extend ASN1 encoder to support indefinite length constructed
4422 encoding. This can output sequences tags and octet strings in
4423 this form. Modify pk7_asn1.c to support indefinite length
4424 encoding. This is experimental and needs additional code to
4425 be useful, such as an ASN1 bio and some enhanced streaming
4428 Extend template encode functionality so that tagging is passed
4429 down to the template encoder.
4432 *) Let 'openssl req' fail if an argument to '-newkey' is not
4433 recognized instead of using RSA as a default.
4436 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
4437 As these are not official, they are not included in "ALL";
4438 the "ECCdraft" ciphersuite group alias can be used to select them.
4439 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
4441 *) Add ECDH engine support.
4442 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
4444 *) Add ECDH in new directory crypto/ecdh/.
4445 [Douglas Stebila (Sun Microsystems Laboratories)]
4447 *) Let BN_rand_range() abort with an error after 100 iterations
4448 without success (which indicates a broken PRNG).
4451 *) Change BN_mod_sqrt() so that it verifies that the input value
4452 is really the square of the return value. (Previously,
4453 BN_mod_sqrt would show GIGO behaviour.)
4456 *) Add named elliptic curves over binary fields from X9.62, SECG,
4457 and WAP/WTLS; add OIDs that were still missing.
4459 [Sheueling Chang Shantz and Douglas Stebila
4460 (Sun Microsystems Laboratories)]
4462 *) Extend the EC library for elliptic curves over binary fields
4463 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
4466 EC_GF2m_simple_method
4470 EC_GROUP_new_curve_GF2m
4471 EC_GROUP_set_curve_GF2m
4472 EC_GROUP_get_curve_GF2m
4473 EC_POINT_set_affine_coordinates_GF2m
4474 EC_POINT_get_affine_coordinates_GF2m
4475 EC_POINT_set_compressed_coordinates_GF2m
4477 Point compression for binary fields is disabled by default for
4478 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
4481 As binary polynomials are represented as BIGNUMs, various members
4482 of the EC_GROUP and EC_POINT data structures can be shared
4483 between the implementations for prime fields and binary fields;
4484 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
4485 are essentially identical to their ..._GFp counterparts.
4486 (For simplicity, the '..._GFp' prefix has been dropped from
4487 various internal method names.)
4489 An internal 'field_div' method (similar to 'field_mul' and
4490 'field_sqr') has been added; this is used only for binary fields.
4492 [Sheueling Chang Shantz and Douglas Stebila
4493 (Sun Microsystems Laboratories)]
4495 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
4496 through methods ('mul', 'precompute_mult').
4498 The generic implementations (now internally called 'ec_wNAF_mul'
4499 and 'ec_wNAF_precomputed_mult') remain the default if these
4500 methods are undefined.
4502 [Sheueling Chang Shantz and Douglas Stebila
4503 (Sun Microsystems Laboratories)]
4505 *) New function EC_GROUP_get_degree, which is defined through
4506 EC_METHOD. For curves over prime fields, this returns the bit
4507 length of the modulus.
4509 [Sheueling Chang Shantz and Douglas Stebila
4510 (Sun Microsystems Laboratories)]
4512 *) New functions EC_GROUP_dup, EC_POINT_dup.
4513 (These simply call ..._new and ..._copy).
4515 [Sheueling Chang Shantz and Douglas Stebila
4516 (Sun Microsystems Laboratories)]
4518 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
4519 Polynomials are represented as BIGNUMs (where the sign bit is not
4520 used) in the following functions [macros]:
4523 BN_GF2m_sub [= BN_GF2m_add]
4524 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
4525 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
4526 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
4528 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
4529 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
4530 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
4531 BN_GF2m_cmp [= BN_ucmp]
4533 (Note that only the 'mod' functions are actually for fields GF(2^m).
4534 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
4536 For some functions, an the irreducible polynomial defining a
4537 field can be given as an 'unsigned int[]' with strictly
4538 decreasing elements giving the indices of those bits that are set;
4539 i.e., p[] represents the polynomial
4540 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
4542 p[0] > p[1] > ... > p[k] = 0.
4543 This applies to the following functions:
4548 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
4549 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
4551 BN_GF2m_mod_sqrt_arr
4552 BN_GF2m_mod_solve_quad_arr
4556 Conversion can be performed by the following functions:
4561 bntest.c has additional tests for binary polynomial arithmetic.
4563 Two implementations for BN_GF2m_mod_div() are available.
4564 The default algorithm simply uses BN_GF2m_mod_inv() and
4565 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
4566 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
4567 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
4569 [Sheueling Chang Shantz and Douglas Stebila
4570 (Sun Microsystems Laboratories)]
4572 *) Add new error code 'ERR_R_DISABLED' that can be used when some
4573 functionality is disabled at compile-time.
4574 [Douglas Stebila <douglas.stebila@sun.com>]
4576 *) Change default behaviour of 'openssl asn1parse' so that more
4577 information is visible when viewing, e.g., a certificate:
4579 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
4580 mode the content of non-printable OCTET STRINGs is output in a
4581 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
4582 avoid the appearance of a printable string.
4583 [Nils Larsch <nla@trustcenter.de>]
4585 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
4587 EC_GROUP_set_asn1_flag()
4588 EC_GROUP_get_asn1_flag()
4589 EC_GROUP_set_point_conversion_form()
4590 EC_GROUP_get_point_conversion_form()
4591 These control ASN1 encoding details:
4592 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
4593 has been set to OPENSSL_EC_NAMED_CURVE.
4594 - Points are encoded in uncompressed form by default; options for
4595 asn1_for are as for point2oct, namely
4596 POINT_CONVERSION_COMPRESSED
4597 POINT_CONVERSION_UNCOMPRESSED
4598 POINT_CONVERSION_HYBRID
4600 Also add 'seed' and 'seed_len' members to EC_GROUP with access
4603 EC_GROUP_get0_seed()
4604 EC_GROUP_get_seed_len()
4605 This is used only for ASN1 purposes (so far).
4606 [Nils Larsch <nla@trustcenter.de>]
4608 *) Add 'field_type' member to EC_METHOD, which holds the NID
4609 of the appropriate field type OID. The new function
4610 EC_METHOD_get_field_type() returns this value.
4611 [Nils Larsch <nla@trustcenter.de>]
4616 EC_POINT_point2hex()
4617 EC_POINT_hex2point()
4618 providing useful interfaces to EC_POINT_point2oct() and
4619 EC_POINT_oct2point().
4620 [Nils Larsch <nla@trustcenter.de>]
4622 *) Change internals of the EC library so that the functions
4623 EC_GROUP_set_generator()
4624 EC_GROUP_get_generator()
4625 EC_GROUP_get_order()
4626 EC_GROUP_get_cofactor()
4627 are implemented directly in crypto/ec/ec_lib.c and not dispatched
4628 to methods, which would lead to unnecessary code duplication when
4629 adding different types of curves.
4630 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
4632 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
4633 arithmetic, and such that modified wNAFs are generated
4634 (which avoid length expansion in many cases).
4637 *) Add a function EC_GROUP_check_discriminant() (defined via
4638 EC_METHOD) that verifies that the curve discriminant is non-zero.
4640 Add a function EC_GROUP_check() that makes some sanity tests
4641 on a EC_GROUP, its generator and order. This includes
4642 EC_GROUP_check_discriminant().
4643 [Nils Larsch <nla@trustcenter.de>]
4645 *) Add ECDSA in new directory crypto/ecdsa/.
4647 Add applications 'openssl ecparam' and 'openssl ecdsa'
4648 (these are based on 'openssl dsaparam' and 'openssl dsa').
4650 ECDSA support is also included in various other files across the
4651 library. Most notably,
4652 - 'openssl req' now has a '-newkey ecdsa:file' option;
4653 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
4654 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
4655 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
4656 them suitable for ECDSA where domain parameters must be
4657 extracted before the specific public key;
4658 - ECDSA engine support has been added.
4659 [Nils Larsch <nla@trustcenter.de>]
4661 *) Include some named elliptic curves, and add OIDs from X9.62,
4662 SECG, and WAP/WTLS. Each curve can be obtained from the new
4664 EC_GROUP_new_by_curve_name(),
4665 and the list of available named curves can be obtained with
4666 EC_get_builtin_curves().
4667 Also add a 'curve_name' member to EC_GROUP objects, which can be
4669 EC_GROUP_set_curve_name()
4670 EC_GROUP_get_curve_name()
4671 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
4673 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
4674 was actually never needed) and in BN_mul(). The removal in BN_mul()
4675 required a small change in bn_mul_part_recursive() and the addition
4676 of the functions bn_cmp_part_words(), bn_sub_part_words() and
4677 bn_add_part_words(), which do the same thing as bn_cmp_words(),
4678 bn_sub_words() and bn_add_words() except they take arrays with
4682 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
4684 *) Cleanse PEM buffers before freeing them since they may contain
4686 [Benjamin Bennett <ben@psc.edu>]
4688 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
4689 a ciphersuite string such as "DEFAULT:RSA" cannot enable
4690 authentication-only ciphersuites.
4693 *) Since AES128 and AES256 share a single mask bit in the logic of
4694 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
4695 kludge to work properly if AES128 is available and AES256 isn't.
4698 *) Expand security boundary to match 1.1.1 module.
4701 *) Remove redundant features: hash file source, editing of test vectors
4702 modify fipsld to use external fips_premain.c signature.
4705 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
4706 run algorithm test programs.
4709 *) Make algorithm test programs more tolerant of whitespace.
4712 *) Have SSL/TLS server implementation tolerate "mismatched" record
4713 protocol version while receiving ClientHello even if the
4714 ClientHello is fragmented. (The server can't insist on the
4715 particular protocol version it has chosen before the ServerHello
4716 message has informed the client about his choice.)
4719 *) Load error codes if they are not already present instead of using a
4720 static variable. This allows them to be cleanly unloaded and reloaded.
4723 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
4725 *) Introduce limits to prevent malicious keys being able to
4726 cause a denial of service. (CVE-2006-2940)
4727 [Steve Henson, Bodo Moeller]
4729 *) Fix ASN.1 parsing of certain invalid structures that can result
4730 in a denial of service. (CVE-2006-2937) [Steve Henson]
4732 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
4733 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
4735 *) Fix SSL client code which could crash if connecting to a
4736 malicious SSLv2 server. (CVE-2006-4343)
4737 [Tavis Ormandy and Will Drewry, Google Security Team]
4739 *) Change ciphersuite string processing so that an explicit
4740 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
4741 will no longer include "AES128-SHA"), and any other similar
4742 ciphersuite (same bitmap) from *other* protocol versions (so that
4743 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
4744 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
4745 changes from 0.9.8b and 0.9.8d.
4748 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
4750 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
4751 (CVE-2006-4339) [Ben Laurie and Google Security Team]
4753 *) Change the Unix randomness entropy gathering to use poll() when
4754 possible instead of select(), since the latter has some
4755 undesirable limitations.
4756 [Darryl Miles via Richard Levitte and Bodo Moeller]
4758 *) Disable rogue ciphersuites:
4760 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
4761 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
4762 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
4764 The latter two were purportedly from
4765 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
4768 Also deactive the remaining ciphersuites from
4769 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
4770 unofficial, and the ID has long expired.
4773 *) Fix RSA blinding Heisenbug (problems sometimes occured on
4774 dual-core machines) and other potential thread-safety issues.
4777 Changes between 0.9.7i and 0.9.7j [04 May 2006]
4779 *) Adapt fipsld and the build system to link against the validated FIPS
4780 module in FIPS mode.
4783 *) Fixes for VC++ 2005 build under Windows.
4786 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
4787 from a Windows bash shell such as MSYS. It is autodetected from the
4788 "config" script when run from a VC++ environment. Modify standard VC++
4789 build to use fipscanister.o from the GNU make build.
4792 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
4794 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
4795 The value now differs depending on if you build for FIPS or not.
4796 BEWARE! A program linked with a shared FIPSed libcrypto can't be
4797 safely run with a non-FIPSed libcrypto, as it may crash because of
4798 the difference induced by this change.
4801 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
4803 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
4804 (part of SSL_OP_ALL). This option used to disable the
4805 countermeasure against man-in-the-middle protocol-version
4806 rollback in the SSL 2.0 server implementation, which is a bad
4807 idea. (CVE-2005-2969)
4809 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
4810 for Information Security, National Institute of Advanced Industrial
4811 Science and Technology [AIST], Japan)]
4813 *) Minimal support for X9.31 signatures and PSS padding modes. This is
4814 mainly for FIPS compliance and not fully integrated at this stage.
4817 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
4818 the exponentiation using a fixed-length exponent. (Otherwise,
4819 the information leaked through timing could expose the secret key
4820 after many signatures; cf. Bleichenbacher's attack on DSA with
4824 *) Make a new fixed-window mod_exp implementation the default for
4825 RSA, DSA, and DH private-key operations so that the sequence of
4826 squares and multiplies and the memory access pattern are
4827 independent of the particular secret key. This will mitigate
4828 cache-timing and potential related attacks.
4830 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
4831 and this is automatically used by BN_mod_exp_mont() if the new flag
4832 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
4833 will use this BN flag for private exponents unless the flag
4834 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
4835 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
4837 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
4839 *) Change the client implementation for SSLv23_method() and
4840 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
4841 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
4842 (Previously, the SSL 2.0 backwards compatible Client Hello
4843 message format would be used even with SSL_OP_NO_SSLv2.)
4846 *) Add support for smime-type MIME parameter in S/MIME messages which some
4850 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
4851 a threadsafe manner. Modify rsa code to use new function and add calls
4852 to dsa and dh code (which had race conditions before).
4855 *) Include the fixed error library code in the C error file definitions
4856 instead of fixing them up at runtime. This keeps the error code
4857 structures constant.
4860 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
4862 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
4865 *) Fixes for newer kerberos headers. NB: the casts are needed because
4866 the 'length' field is signed on one version and unsigned on another
4867 with no (?) obvious way to tell the difference, without these VC++
4868 complains. Also the "definition" of FAR (blank) is no longer included
4869 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
4870 some needed definitions.
4873 *) Undo Cygwin change.
4876 *) Added support for proxy certificates according to RFC 3820.
4877 Because they may be a security thread to unaware applications,
4878 they must be explicitely allowed in run-time. See
4879 docs/HOWTO/proxy_certificates.txt for further information.
4882 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
4884 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
4885 server and client random values. Previously
4886 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
4887 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
4889 This change has negligible security impact because:
4891 1. Server and client random values still have 24 bytes of pseudo random
4894 2. Server and client random values are sent in the clear in the initial
4897 3. The master secret is derived using the premaster secret (48 bytes in
4898 size for static RSA ciphersuites) as well as client server and random
4901 The OpenSSL team would like to thank the UK NISCC for bringing this issue
4904 [Stephen Henson, reported by UK NISCC]
4906 *) Use Windows randomness collection on Cygwin.
4909 *) Fix hang in EGD/PRNGD query when communication socket is closed
4910 prematurely by EGD/PRNGD.
4911 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
4913 *) Prompt for pass phrases when appropriate for PKCS12 input format.
4916 *) Back-port of selected performance improvements from development
4917 branch, as well as improved support for PowerPC platforms.
4920 *) Add lots of checks for memory allocation failure, error codes to indicate
4921 failure and freeing up memory if a failure occurs.
4922 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
4924 *) Add new -passin argument to dgst.
4927 *) Perform some character comparisons of different types in X509_NAME_cmp:
4928 this is needed for some certificates that reencode DNs into UTF8Strings
4929 (in violation of RFC3280) and can't or wont issue name rollover
4933 *) Make an explicit check during certificate validation to see that
4934 the CA setting in each certificate on the chain is correct. As a
4935 side effect always do the following basic checks on extensions,
4936 not just when there's an associated purpose to the check:
4938 - if there is an unhandled critical extension (unless the user
4939 has chosen to ignore this fault)
4940 - if the path length has been exceeded (if one is set at all)
4941 - that certain extensions fit the associated purpose (if one has
4945 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
4947 *) Avoid a race condition when CRLs are checked in a multi threaded
4948 environment. This would happen due to the reordering of the revoked
4949 entries during signature checking and serial number lookup. Now the
4950 encoding is cached and the serial number sort performed under a lock.
4951 Add new STACK function sk_is_sorted().
4954 *) Add Delta CRL to the extension code.
4957 *) Various fixes to s3_pkt.c so alerts are sent properly.
4958 [David Holmes <d.holmes@f5.com>]
4960 *) Reduce the chances of duplicate issuer name and serial numbers (in
4961 violation of RFC3280) using the OpenSSL certificate creation utilities.
4962 This is done by creating a random 64 bit value for the initial serial
4963 number when a serial number file is created or when a self signed
4964 certificate is created using 'openssl req -x509'. The initial serial
4965 number file is created using 'openssl x509 -next_serial' in CA.pl
4966 rather than being initialized to 1.
4969 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
4971 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
4972 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
4973 [Joe Orton, Steve Henson]
4975 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
4977 [Joe Orton, Steve Henson]
4979 *) Make it possible to have multiple active certificates with the same
4980 subject in the CA index file. This is done only if the keyword
4981 'unique_subject' is set to 'no' in the main CA section (default
4982 if 'CA_default') of the configuration file. The value is saved
4983 with the database itself in a separate index attribute file,
4984 named like the index file with '.attr' appended to the name.
4987 *) X509 verify fixes. Disable broken certificate workarounds when
4988 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
4989 keyUsage extension present. Don't accept CRLs with unhandled critical
4990 extensions: since verify currently doesn't process CRL extensions this
4991 rejects a CRL with *any* critical extensions. Add new verify error codes
4995 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
4996 A clarification of RFC2560 will require the use of OCTET STRINGs and
4997 some implementations cannot handle the current raw format. Since OpenSSL
4998 copies and compares OCSP nonces as opaque blobs without any attempt at
4999 parsing them this should not create any compatibility issues.
5002 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
5003 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
5004 this HMAC (and other) operations are several times slower than OpenSSL
5008 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
5009 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
5011 *) Use the correct content when signing type "other".
5014 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
5016 *) Fix various bugs revealed by running the NISCC test suite:
5018 Stop out of bounds reads in the ASN1 code when presented with
5019 invalid tags (CVE-2003-0543 and CVE-2003-0544).
5021 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
5023 If verify callback ignores invalid public key errors don't try to check
5024 certificate signature with the NULL public key.
5028 *) New -ignore_err option in ocsp application to stop the server
5029 exiting on the first error in a request.
5032 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
5033 if the server requested one: as stated in TLS 1.0 and SSL 3.0
5037 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
5038 extra data after the compression methods not only for TLS 1.0
5039 but also for SSL 3.0 (as required by the specification).
5040 [Bodo Moeller; problem pointed out by Matthias Loepfe]
5042 *) Change X509_certificate_type() to mark the key as exported/exportable
5043 when it's 512 *bits* long, not 512 bytes.
5046 *) Change AES_cbc_encrypt() so it outputs exact multiple of
5047 blocks during encryption.
5050 *) Various fixes to base64 BIO and non blocking I/O. On write
5051 flushes were not handled properly if the BIO retried. On read
5052 data was not being buffered properly and had various logic bugs.
5053 This also affects blocking I/O when the data being decoded is a
5057 *) Various S/MIME bugfixes and compatibility changes:
5058 output correct application/pkcs7 MIME type if
5059 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
5060 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
5061 of files as .eml work). Correctly handle very long lines in MIME
5065 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
5067 *) Countermeasure against the Klima-Pokorny-Rosa extension of
5068 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
5069 a protocol version number mismatch like a decryption error
5070 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
5073 *) Turn on RSA blinding by default in the default implementation
5074 to avoid a timing attack. Applications that don't want it can call
5075 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
5076 They would be ill-advised to do so in most cases.
5077 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
5079 *) Change RSA blinding code so that it works when the PRNG is not
5080 seeded (in this case, the secret RSA exponent is abused as
5081 an unpredictable seed -- if it is not unpredictable, there
5082 is no point in blinding anyway). Make RSA blinding thread-safe
5083 by remembering the creator's thread ID in rsa->blinding and
5084 having all other threads use local one-time blinding factors
5085 (this requires more computation than sharing rsa->blinding, but
5086 avoids excessive locking; and if an RSA object is not shared
5087 between threads, blinding will still be very fast).
5090 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
5091 ENGINE as defaults for all supported algorithms irrespective of
5092 the 'flags' parameter. 'flags' is now honoured, so applications
5093 should make sure they are passing it correctly.
5096 *) Target "mingw" now allows native Windows code to be generated in
5097 the Cygwin environment as well as with the MinGW compiler.
5100 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
5102 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
5103 via timing by performing a MAC computation even if incorrect
5104 block cipher padding has been found. This is a countermeasure
5105 against active attacks where the attacker has to distinguish
5106 between bad padding and a MAC verification error. (CVE-2003-0078)
5108 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
5109 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
5110 Martin Vuagnoux (EPFL, Ilion)]
5112 *) Make the no-err option work as intended. The intention with no-err
5113 is not to have the whole error stack handling routines removed from
5114 libcrypto, it's only intended to remove all the function name and
5115 reason texts, thereby removing some of the footprint that may not
5116 be interesting if those errors aren't displayed anyway.
5118 NOTE: it's still possible for any application or module to have it's
5119 own set of error texts inserted. The routines are there, just not
5120 used by default when no-err is given.
5123 *) Add support for FreeBSD on IA64.
5124 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
5126 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
5127 Kerberos function mit_des_cbc_cksum(). Before this change,
5128 the value returned by DES_cbc_cksum() was like the one from
5129 mit_des_cbc_cksum(), except the bytes were swapped.
5130 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
5132 *) Allow an application to disable the automatic SSL chain building.
5133 Before this a rather primitive chain build was always performed in
5134 ssl3_output_cert_chain(): an application had no way to send the
5135 correct chain if the automatic operation produced an incorrect result.
5137 Now the chain builder is disabled if either:
5139 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
5141 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
5143 The reasoning behind this is that an application would not want the
5144 auto chain building to take place if extra chain certificates are
5145 present and it might also want a means of sending no additional
5146 certificates (for example the chain has two certificates and the
5150 *) Add the possibility to build without the ENGINE framework.
5151 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
5153 *) Under Win32 gmtime() can return NULL: check return value in
5154 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
5157 *) DSA routines: under certain error conditions uninitialized BN objects
5158 could be freed. Solution: make sure initialization is performed early
5159 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
5160 Nils Larsch <nla@trustcenter.de> via PR#459)
5163 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
5164 checked on reconnect on the client side, therefore session resumption
5165 could still fail with a "ssl session id is different" error. This
5166 behaviour is masked when SSL_OP_ALL is used due to
5167 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
5168 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
5169 followup to PR #377.
5172 *) IA-32 assembler support enhancements: unified ELF targets, support
5173 for SCO/Caldera platforms, fix for Cygwin shared build.
5176 *) Add support for FreeBSD on sparc64. As a consequence, support for
5177 FreeBSD on non-x86 processors is separate from x86 processors on
5178 the config script, much like the NetBSD support.
5179 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
5181 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
5183 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
5186 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
5187 code (06) was taken as the first octet of the session ID and the last
5188 octet was ignored consequently. As a result SSLv2 client side session
5189 caching could not have worked due to the session ID mismatch between
5191 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
5195 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
5196 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
5200 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
5201 seems that in spite of existing for more than a year, many application
5202 author have done nothing to provide the necessary callbacks, which
5203 means that this particular engine will not work properly anywhere.
5204 This is a very unfortunate situation which forces us, in the name
5205 of usability, to give the hw_ncipher.c a static lock, which is part
5207 NOTE: This is for the 0.9.7 series ONLY. This hack will never
5208 appear in 0.9.8 or later. We EXPECT application authors to have
5209 dealt properly with this when 0.9.8 is released (unless we actually
5210 make such changes in the libcrypto locking code that changes will
5211 have to be made anyway).
5214 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
5215 octets have been read, EOF or an error occurs. Without this change
5216 some truncated ASN1 structures will not produce an error.
5219 *) Disable Heimdal support, since it hasn't been fully implemented.
5220 Still give the possibility to force the use of Heimdal, but with
5221 warnings and a request that patches get sent to openssl-dev.
5224 *) Add the VC-CE target, introduce the WINCE sysname, and add
5225 INSTALL.WCE and appropriate conditionals to make it build.
5226 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
5228 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
5229 cygssl-x.y.z.dll, where x, y and z are the major, minor and
5230 edit numbers of the version.
5231 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
5233 *) Introduce safe string copy and catenation functions
5234 (BUF_strlcpy() and BUF_strlcat()).
5235 [Ben Laurie (CHATS) and Richard Levitte]
5237 *) Avoid using fixed-size buffers for one-line DNs.
5238 [Ben Laurie (CHATS)]
5240 *) Add BUF_MEM_grow_clean() to avoid information leakage when
5241 resizing buffers containing secrets, and use where appropriate.
5242 [Ben Laurie (CHATS)]
5244 *) Avoid using fixed size buffers for configuration file location.
5245 [Ben Laurie (CHATS)]
5247 *) Avoid filename truncation for various CA files.
5248 [Ben Laurie (CHATS)]
5250 *) Use sizeof in preference to magic numbers.
5251 [Ben Laurie (CHATS)]
5253 *) Avoid filename truncation in cert requests.
5254 [Ben Laurie (CHATS)]
5256 *) Add assertions to check for (supposedly impossible) buffer
5258 [Ben Laurie (CHATS)]
5260 *) Don't cache truncated DNS entries in the local cache (this could
5261 potentially lead to a spoofing attack).
5262 [Ben Laurie (CHATS)]
5264 *) Fix various buffers to be large enough for hex/decimal
5265 representations in a platform independent manner.
5266 [Ben Laurie (CHATS)]
5268 *) Add CRYPTO_realloc_clean() to avoid information leakage when
5269 resizing buffers containing secrets, and use where appropriate.
5270 [Ben Laurie (CHATS)]
5272 *) Add BIO_indent() to avoid much slightly worrying code to do
5274 [Ben Laurie (CHATS)]
5276 *) Convert sprintf()/BIO_puts() to BIO_printf().
5277 [Ben Laurie (CHATS)]
5279 *) buffer_gets() could terminate with the buffer only half
5281 [Ben Laurie (CHATS)]
5283 *) Add assertions to prevent user-supplied crypto functions from
5284 overflowing internal buffers by having large block sizes, etc.
5285 [Ben Laurie (CHATS)]
5287 *) New OPENSSL_assert() macro (similar to assert(), but enabled
5289 [Ben Laurie (CHATS)]
5291 *) Eliminate unused copy of key in RC4.
5292 [Ben Laurie (CHATS)]
5294 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
5295 [Ben Laurie (CHATS)]
5297 *) Fix off-by-one error in EGD path.
5298 [Ben Laurie (CHATS)]
5300 *) If RANDFILE path is too long, ignore instead of truncating.
5301 [Ben Laurie (CHATS)]
5303 *) Eliminate unused and incorrectly sized X.509 structure
5305 [Ben Laurie (CHATS)]
5307 *) Eliminate unused and dangerous function knumber().
5308 [Ben Laurie (CHATS)]
5310 *) Eliminate unused and dangerous structure, KSSL_ERR.
5311 [Ben Laurie (CHATS)]
5313 *) Protect against overlong session ID context length in an encoded
5314 session object. Since these are local, this does not appear to be
5316 [Ben Laurie (CHATS)]
5318 *) Change from security patch (see 0.9.6e below) that did not affect
5319 the 0.9.6 release series:
5321 Remote buffer overflow in SSL3 protocol - an attacker could
5322 supply an oversized master key in Kerberos-enabled versions.
5324 [Ben Laurie (CHATS)]
5326 *) Change the SSL kerb5 codes to match RFC 2712.
5329 *) Make -nameopt work fully for req and add -reqopt switch.
5330 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
5332 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
5333 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
5335 *) Make sure tests can be performed even if the corresponding algorithms
5336 have been removed entirely. This was also the last step to make
5337 OpenSSL compilable with DJGPP under all reasonable conditions.
5338 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
5340 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
5341 to allow version independent disabling of normally unselected ciphers,
5342 which may be activated as a side-effect of selecting a single cipher.
5344 (E.g., cipher list string "RSA" enables ciphersuites that are left
5345 out of "ALL" because they do not provide symmetric encryption.
5346 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
5347 [Lutz Jaenicke, Bodo Moeller]
5349 *) Add appropriate support for separate platform-dependent build
5350 directories. The recommended way to make a platform-dependent
5351 build directory is the following (tested on Linux), maybe with
5354 # Place yourself outside of the OpenSSL source tree. In
5355 # this example, the environment variable OPENSSL_SOURCE
5356 # is assumed to contain the absolute OpenSSL source directory.
5357 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
5358 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
5359 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
5360 mkdir -p `dirname $F`
5361 ln -s $OPENSSL_SOURCE/$F $F
5364 To be absolutely sure not to disturb the source tree, a "make clean"
5365 is a good thing. If it isn't successful, don't worry about it,
5366 it probably means the source directory is very clean.
5369 *) Make sure any ENGINE control commands make local copies of string
5370 pointers passed to them whenever necessary. Otherwise it is possible
5371 the caller may have overwritten (or deallocated) the original string
5372 data when a later ENGINE operation tries to use the stored values.
5373 [Götz Babin-Ebell <babinebell@trustcenter.de>]
5375 *) Improve diagnostics in file reading and command-line digests.
5376 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
5378 *) Add AES modes CFB and OFB to the object database. Correct an
5379 error in AES-CFB decryption.
5382 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
5383 allows existing EVP_CIPHER_CTX structures to be reused after
5384 calling EVP_*Final(). This behaviour is used by encryption
5385 BIOs and some applications. This has the side effect that
5386 applications must explicitly clean up cipher contexts with
5387 EVP_CIPHER_CTX_cleanup() or they will leak memory.
5390 *) Check the values of dna and dnb in bn_mul_recursive before calling
5391 bn_mul_comba (a non zero value means the a or b arrays do not contain
5392 n2 elements) and fallback to bn_mul_normal if either is not zero.
5395 *) Fix escaping of non-ASCII characters when using the -subj option
5396 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
5399 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
5400 form for "surname", serialNumber has no short form.
5401 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
5402 therefore remove "mail" short name for "internet 7".
5403 The OID for unique identifiers in X509 certificates is
5404 x500UniqueIdentifier, not uniqueIdentifier.
5405 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
5408 *) Add an "init" command to the ENGINE config module and auto initialize
5409 ENGINEs. Without any "init" command the ENGINE will be initialized
5410 after all ctrl commands have been executed on it. If init=1 the
5411 ENGINE is initailized at that point (ctrls before that point are run
5412 on the uninitialized ENGINE and after on the initialized one). If
5413 init=0 then the ENGINE will not be iniatialized at all.
5416 *) Fix the 'app_verify_callback' interface so that the user-defined
5417 argument is actually passed to the callback: In the
5418 SSL_CTX_set_cert_verify_callback() prototype, the callback
5419 declaration has been changed from
5422 int (*cb)(X509_STORE_CTX *,void *);
5423 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
5424 i=s->ctx->app_verify_callback(&ctx)
5425 has been changed into
5426 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
5428 To update applications using SSL_CTX_set_cert_verify_callback(),
5429 a dummy argument can be added to their callback functions.
5430 [D. K. Smetters <smetters@parc.xerox.com>]
5432 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
5433 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
5435 *) Add and OPENSSL_LOAD_CONF define which will cause
5436 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
5437 This allows older applications to transparently support certain
5438 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
5439 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
5440 load the config file and OPENSSL_add_all_algorithms_conf() which will
5441 always load it have also been added.
5444 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
5445 Adjust NIDs and EVP layer.
5446 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
5448 *) Config modules support in openssl utility.
5450 Most commands now load modules from the config file,
5451 though in a few (such as version) this isn't done
5452 because it couldn't be used for anything.
5454 In the case of ca and req the config file used is
5455 the same as the utility itself: that is the -config
5456 command line option can be used to specify an
5460 *) Move default behaviour from OPENSSL_config(). If appname is NULL
5461 use "openssl_conf" if filename is NULL use default openssl config file.
5464 *) Add an argument to OPENSSL_config() to allow the use of an alternative
5465 config section name. Add a new flag to tolerate a missing config file
5466 and move code to CONF_modules_load_file().
5469 *) Support for crypto accelerator cards from Accelerated Encryption
5470 Processing, www.aep.ie. (Use engine 'aep')
5471 The support was copied from 0.9.6c [engine] and adapted/corrected
5472 to work with the new engine framework.
5473 [AEP Inc. and Richard Levitte]
5475 *) Support for SureWare crypto accelerator cards from Baltimore
5476 Technologies. (Use engine 'sureware')
5477 The support was copied from 0.9.6c [engine] and adapted
5478 to work with the new engine framework.
5481 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
5482 make the newer ENGINE framework commands for the CHIL engine work.
5483 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
5485 *) Make it possible to produce shared libraries on ReliantUNIX.
5486 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
5488 *) Add the configuration target debug-linux-ppro.
5489 Make 'openssl rsa' use the general key loading routines
5490 implemented in apps.c, and make those routines able to
5491 handle the key format FORMAT_NETSCAPE and the variant
5493 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
5495 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
5496 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
5498 *) Add -keyform to rsautl, and document -engine.
5499 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
5501 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
5502 BIO_R_NO_SUCH_FILE error code rather than the generic
5503 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
5506 *) Add new functions
5508 ERR_peek_last_error_line
5509 ERR_peek_last_error_line_data.
5510 These are similar to
5513 ERR_peek_error_line_data,
5514 but report on the latest error recorded rather than the first one
5515 still in the error queue.
5516 [Ben Laurie, Bodo Moeller]
5518 *) default_algorithms option in ENGINE config module. This allows things
5520 default_algorithms = ALL
5521 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
5524 *) Preliminary ENGINE config module.
5527 *) New experimental application configuration code.
5530 *) Change the AES code to follow the same name structure as all other
5531 symmetric ciphers, and behave the same way. Move everything to
5532 the directory crypto/aes, thereby obsoleting crypto/rijndael.
5533 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
5535 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
5536 [Ben Laurie and Theo de Raadt]
5538 *) Add option to output public keys in req command.
5539 [Massimiliano Pala madwolf@openca.org]
5541 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
5542 (up to about 10% better than before for P-192 and P-224).
5545 *) New functions/macros
5547 SSL_CTX_set_msg_callback(ctx, cb)
5548 SSL_CTX_set_msg_callback_arg(ctx, arg)
5549 SSL_set_msg_callback(ssl, cb)
5550 SSL_set_msg_callback_arg(ssl, arg)
5552 to request calling a callback function
5554 void cb(int write_p, int version, int content_type,
5555 const void *buf, size_t len, SSL *ssl, void *arg)
5557 whenever a protocol message has been completely received
5558 (write_p == 0) or sent (write_p == 1). Here 'version' is the
5559 protocol version according to which the SSL library interprets
5560 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
5561 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
5562 the content type as defined in the SSL 3.0/TLS 1.0 protocol
5563 specification (change_cipher_spec(20), alert(21), handshake(22)).
5564 'buf' and 'len' point to the actual message, 'ssl' to the
5565 SSL object, and 'arg' is the application-defined value set by
5566 SSL[_CTX]_set_msg_callback_arg().
5568 'openssl s_client' and 'openssl s_server' have new '-msg' options
5569 to enable a callback that displays all protocol messages.
5572 *) Change the shared library support so shared libraries are built as
5573 soon as the corresponding static library is finished, and thereby get
5574 openssl and the test programs linked against the shared library.
5575 This still only happens when the keyword "shard" has been given to
5576 the configuration scripts.
5578 NOTE: shared library support is still an experimental thing, and
5579 backward binary compatibility is still not guaranteed.
5580 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
5582 *) Add support for Subject Information Access extension.
5583 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
5585 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
5586 additional bytes when new memory had to be allocated, not just
5587 when reusing an existing buffer.
5590 *) New command line and configuration option 'utf8' for the req command.
5591 This allows field values to be specified as UTF8 strings.
5594 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
5595 runs for the former and machine-readable output for the latter.
5598 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
5599 of the e-mail address in the DN (i.e., it will go into a certificate
5600 extension only). The new configuration file option 'email_in_dn = no'
5601 has the same effect.
5602 [Massimiliano Pala madwolf@openca.org]
5604 *) Change all functions with names starting with des_ to be starting
5605 with DES_ instead. Add wrappers that are compatible with libdes,
5606 but are named _ossl_old_des_*. Finally, add macros that map the
5607 des_* symbols to the corresponding _ossl_old_des_* if libdes
5608 compatibility is desired. If OpenSSL 0.9.6c compatibility is
5609 desired, the des_* symbols will be mapped to DES_*, with one
5612 Since we provide two compatibility mappings, the user needs to
5613 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
5614 compatibility is desired. The default (i.e., when that macro
5615 isn't defined) is OpenSSL 0.9.6c compatibility.
5617 There are also macros that enable and disable the support of old
5618 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
5619 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
5620 are defined, the default will apply: to support the old des routines.
5622 In either case, one must include openssl/des.h to get the correct
5623 definitions. Do not try to just include openssl/des_old.h, that
5626 NOTE: This is a major break of an old API into a new one. Software
5627 authors are encouraged to switch to the DES_ style functions. Some
5628 time in the future, des_old.h and the libdes compatibility functions
5629 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
5630 default), and then completely removed.
5633 *) Test for certificates which contain unsupported critical extensions.
5634 If such a certificate is found during a verify operation it is
5635 rejected by default: this behaviour can be overridden by either
5636 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
5637 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
5638 X509_supported_extension() has also been added which returns 1 if a
5639 particular extension is supported.
5642 *) Modify the behaviour of EVP cipher functions in similar way to digests
5643 to retain compatibility with existing code.
5646 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
5647 compatibility with existing code. In particular the 'ctx' parameter does
5648 not have to be to be initialized before the call to EVP_DigestInit() and
5649 it is tidied up after a call to EVP_DigestFinal(). New function
5650 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
5651 EVP_MD_CTX_copy() changed to not require the destination to be
5652 initialized valid and new function EVP_MD_CTX_copy_ex() added which
5653 requires the destination to be valid.
5655 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
5656 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
5659 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
5660 so that complete 'Handshake' protocol structures are kept in memory
5661 instead of overwriting 'msg_type' and 'length' with 'body' data.
5664 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
5665 [Massimo Santin via Richard Levitte]
5667 *) Major restructuring to the underlying ENGINE code. This includes
5668 reduction of linker bloat, separation of pure "ENGINE" manipulation
5669 (initialisation, etc) from functionality dealing with implementations
5670 of specific crypto iterfaces. This change also introduces integrated
5671 support for symmetric ciphers and digest implementations - so ENGINEs
5672 can now accelerate these by providing EVP_CIPHER and EVP_MD
5673 implementations of their own. This is detailed in crypto/engine/README
5674 as it couldn't be adequately described here. However, there are a few
5675 API changes worth noting - some RSA, DSA, DH, and RAND functions that
5676 were changed in the original introduction of ENGINE code have now
5677 reverted back - the hooking from this code to ENGINE is now a good
5678 deal more passive and at run-time, operations deal directly with
5679 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
5680 dereferencing through an ENGINE pointer any more. Also, the ENGINE
5681 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
5682 they were not being used by the framework as there is no concept of a
5683 BIGNUM_METHOD and they could not be generalised to the new
5684 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
5685 ENGINE_cpy() has been removed as it cannot be consistently defined in
5689 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
5692 *) Change mkdef.pl to sort symbols that get the same entry number,
5693 and make sure the automatically generated functions ERR_load_*
5694 become part of libeay.num as well.
5697 *) New function SSL_renegotiate_pending(). This returns true once
5698 renegotiation has been requested (either SSL_renegotiate() call
5699 or HelloRequest/ClientHello received from the peer) and becomes
5700 false once a handshake has been completed.
5701 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
5702 sends a HelloRequest, but does not ensure that a handshake takes
5703 place. SSL_renegotiate_pending() is useful for checking if the
5704 client has followed the request.)
5707 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
5708 By default, clients may request session resumption even during
5709 renegotiation (if session ID contexts permit); with this option,
5710 session resumption is possible only in the first handshake.
5712 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
5713 more bits available for options that should not be part of
5714 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
5717 *) Add some demos for certificate and certificate request creation.
5720 *) Make maximum certificate chain size accepted from the peer application
5721 settable (SSL*_get/set_max_cert_list()), as proposed by
5722 "Douglas E. Engert" <deengert@anl.gov>.
5725 *) Add support for shared libraries for Unixware-7
5726 (Boyd Lynn Gerber <gerberb@zenez.com>).
5729 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
5730 be done prior to destruction. Use this to unload error strings from
5731 ENGINEs that load their own error strings. NB: This adds two new API
5732 functions to "get" and "set" this destroy handler in an ENGINE.
5735 *) Alter all existing ENGINE implementations (except "openssl" and
5736 "openbsd") to dynamically instantiate their own error strings. This
5737 makes them more flexible to be built both as statically-linked ENGINEs
5738 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
5739 Also, add stub code to each that makes building them as self-contained
5740 shared-libraries easier (see README.ENGINE).
5743 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
5744 implementations into applications that are completely implemented in
5745 self-contained shared-libraries. The "dynamic" ENGINE exposes control
5746 commands that can be used to configure what shared-library to load and
5747 to control aspects of the way it is handled. Also, made an update to
5748 the README.ENGINE file that brings its information up-to-date and
5749 provides some information and instructions on the "dynamic" ENGINE
5750 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
5753 *) Make it possible to unload ranges of ERR strings with a new
5754 "ERR_unload_strings" function.
5757 *) Add a copy() function to EVP_MD.
5760 *) Make EVP_MD routines take a context pointer instead of just the
5761 md_data void pointer.
5764 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
5765 that the digest can only process a single chunk of data
5766 (typically because it is provided by a piece of
5767 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
5768 is only going to provide a single chunk of data, and hence the
5769 framework needn't accumulate the data for oneshot drivers.
5772 *) As with "ERR", make it possible to replace the underlying "ex_data"
5773 functions. This change also alters the storage and management of global
5774 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
5775 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
5776 index counters. The API functions that use this state have been changed
5777 to take a "class_index" rather than pointers to the class's local STACK
5778 and counter, and there is now an API function to dynamically create new
5779 classes. This centralisation allows us to (a) plug a lot of the
5780 thread-safety problems that existed, and (b) makes it possible to clean
5781 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
5782 such data would previously have always leaked in application code and
5783 workarounds were in place to make the memory debugging turn a blind eye
5784 to it. Application code that doesn't use this new function will still
5785 leak as before, but their memory debugging output will announce it now
5786 rather than letting it slide.
5788 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
5789 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
5790 has a return value to indicate success or failure.
5793 *) Make it possible to replace the underlying "ERR" functions such that the
5794 global state (2 LHASH tables and 2 locks) is only used by the "default"
5795 implementation. This change also adds two functions to "get" and "set"
5796 the implementation prior to it being automatically set the first time
5797 any other ERR function takes place. Ie. an application can call "get",
5798 pass the return value to a module it has just loaded, and that module
5799 can call its own "set" function using that value. This means the
5800 module's "ERR" operations will use (and modify) the error state in the
5801 application and not in its own statically linked copy of OpenSSL code.
5804 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
5805 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
5806 the operation, and provides a more encapsulated way for external code
5807 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
5808 to use these functions rather than manually incrementing the counts.
5810 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
5813 *) Add EVP test program.
5816 *) Add symmetric cipher support to ENGINE. Expect the API to change!
5819 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
5820 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
5821 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
5822 These allow a CRL to be built without having to access X509_CRL fields
5823 directly. Modify 'ca' application to use new functions.
5826 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
5827 bug workarounds. Rollback attack detection is a security feature.
5828 The problem will only arise on OpenSSL servers when TLSv1 is not
5829 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
5830 Software authors not wanting to support TLSv1 will have special reasons
5831 for their choice and can explicitly enable this option.
5832 [Bodo Moeller, Lutz Jaenicke]
5834 *) Rationalise EVP so it can be extended: don't include a union of
5835 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
5836 (similar to those existing for EVP_CIPHER_CTX).
5841 EVP_MD_CTX_init(&md); /* new function call */
5842 EVP_DigestInit(&md, EVP_sha1());
5843 EVP_DigestUpdate(&md, in, len);
5844 EVP_DigestFinal(&md, out, NULL);
5845 EVP_MD_CTX_cleanup(&md); /* new function call */
5849 *) Make DES key schedule conform to the usual scheme, as well as
5850 correcting its structure. This means that calls to DES functions
5851 now have to pass a pointer to a des_key_schedule instead of a
5852 plain des_key_schedule (which was actually always a pointer
5855 des_key_schedule ks;
5857 des_set_key_checked(..., &ks);
5858 des_ncbc_encrypt(..., &ks, ...);
5860 (Note that a later change renames 'des_...' into 'DES_...'.)
5863 *) Initial reduction of linker bloat: the use of some functions, such as
5864 PEM causes large amounts of unused functions to be linked in due to
5865 poor organisation. For example pem_all.c contains every PEM function
5866 which has a knock on effect of linking in large amounts of (unused)
5867 ASN1 code. Grouping together similar functions and splitting unrelated
5868 functions prevents this.
5871 *) Cleanup of EVP macros.
5874 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
5875 correct _ecb suffix.
5878 *) Add initial OCSP responder support to ocsp application. The
5879 revocation information is handled using the text based index
5880 use by the ca application. The responder can either handle
5881 requests generated internally, supplied in files (for example
5882 via a CGI script) or using an internal minimal server.
5885 *) Add configuration choices to get zlib compression for TLS.
5888 *) Changes to Kerberos SSL for RFC 2712 compliance:
5889 1. Implemented real KerberosWrapper, instead of just using
5890 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
5891 2. Implemented optional authenticator field of KerberosWrapper.
5893 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
5894 and authenticator structs; see crypto/krb5/.
5896 Generalized Kerberos calls to support multiple Kerberos libraries.
5897 [Vern Staats <staatsvr@asc.hpc.mil>,
5898 Jeffrey Altman <jaltman@columbia.edu>
5899 via Richard Levitte]
5901 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
5902 already does with RSA. testdsa.h now has 'priv_key/pub_key'
5903 values for each of the key sizes rather than having just
5904 parameters (and 'speed' generating keys each time).
5907 *) Speed up EVP routines.
5910 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
5911 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
5912 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
5913 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
5915 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
5916 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
5917 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
5920 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
5922 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
5925 *) Added the OS2-EMX target.
5926 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
5928 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
5929 to support NCONF routines in extension code. New function CONF_set_nconf()
5930 to allow functions which take an NCONF to also handle the old LHASH
5931 structure: this means that the old CONF compatible routines can be
5932 retained (in particular wrt extensions) without having to duplicate the
5933 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
5936 *) Enhance the general user interface with mechanisms for inner control
5937 and with possibilities to have yes/no kind of prompts.
5940 *) Change all calls to low level digest routines in the library and
5941 applications to use EVP. Add missing calls to HMAC_cleanup() and
5942 don't assume HMAC_CTX can be copied using memcpy().
5943 [Verdon Walker <VWalker@novell.com>, Steve Henson]
5945 *) Add the possibility to control engines through control names but with
5946 arbitrary arguments instead of just a string.
5947 Change the key loaders to take a UI_METHOD instead of a callback
5948 function pointer. NOTE: this breaks binary compatibility with earlier
5949 versions of OpenSSL [engine].
5950 Adapt the nCipher code for these new conditions and add a card insertion
5954 *) Enhance the general user interface with mechanisms to better support
5955 dialog box interfaces, application-defined prompts, the possibility
5956 to use defaults (for example default passwords from somewhere else)
5957 and interrupts/cancellations.
5960 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
5961 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
5964 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
5965 tidy up some unnecessarily weird code in 'sk_new()').
5966 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
5968 *) Change the key loading routines for ENGINEs to use the same kind
5969 callback (pem_password_cb) as all other routines that need this
5973 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
5974 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
5975 than this minimum value is recommended.
5978 *) New random seeder for OpenVMS, using the system process statistics
5979 that are easily reachable.
5982 *) Windows apparently can't transparently handle global
5983 variables defined in DLLs. Initialisations such as:
5985 const ASN1_ITEM *it = &ASN1_INTEGER_it;
5987 wont compile. This is used by the any applications that need to
5988 declare their own ASN1 modules. This was fixed by adding the option
5989 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
5990 needed for static libraries under Win32.
5993 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
5994 setting of purpose and trust fields. New X509_STORE trust and
5995 purpose functions and tidy up setting in other SSL functions.
5998 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
5999 structure. These are inherited by X509_STORE_CTX when it is
6000 initialised. This allows various defaults to be set in the
6001 X509_STORE structure (such as flags for CRL checking and custom
6002 purpose or trust settings) for functions which only use X509_STORE_CTX
6003 internally such as S/MIME.
6005 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
6006 trust settings if they are not set in X509_STORE. This allows X509_STORE
6007 purposes and trust (in S/MIME for example) to override any set by default.
6009 Add command line options for CRL checking to smime, s_client and s_server
6013 *) Initial CRL based revocation checking. If the CRL checking flag(s)
6014 are set then the CRL is looked up in the X509_STORE structure and
6015 its validity and signature checked, then if the certificate is found
6016 in the CRL the verify fails with a revoked error.
6018 Various new CRL related callbacks added to X509_STORE_CTX structure.
6020 Command line options added to 'verify' application to support this.
6022 This needs some additional work, such as being able to handle multiple
6023 CRLs with different times, extension based lookup (rather than just
6024 by subject name) and ultimately more complete V2 CRL extension
6028 *) Add a general user interface API (crypto/ui/). This is designed
6029 to replace things like des_read_password and friends (backward
6030 compatibility functions using this new API are provided).
6031 The purpose is to remove prompting functions from the DES code
6032 section as well as provide for prompting through dialog boxes in
6033 a window system and the like.
6036 *) Add "ex_data" support to ENGINE so implementations can add state at a
6037 per-structure level rather than having to store it globally.
6040 *) Make it possible for ENGINE structures to be copied when retrieved by
6041 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
6042 This causes the "original" ENGINE structure to act like a template,
6043 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
6044 operational state can be localised to each ENGINE structure, despite the
6045 fact they all share the same "methods". New ENGINE structures returned in
6046 this case have no functional references and the return value is the single
6047 structural reference. This matches the single structural reference returned
6048 by ENGINE_by_id() normally, when it is incremented on the pre-existing
6052 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
6053 needs to match any other type at all we need to manually clear the
6057 *) Changes to the "openssl engine" utility to include;
6058 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
6059 about an ENGINE's available control commands.
6060 - executing control commands from command line arguments using the
6061 '-pre' and '-post' switches. '-post' is only used if '-t' is
6062 specified and the ENGINE is successfully initialised. The syntax for
6063 the individual commands are colon-separated, for example;
6064 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
6067 *) New dynamic control command support for ENGINEs. ENGINEs can now
6068 declare their own commands (numbers), names (strings), descriptions,
6069 and input types for run-time discovery by calling applications. A
6070 subset of these commands are implicitly classed as "executable"
6071 depending on their input type, and only these can be invoked through
6072 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
6073 can be based on user input, config files, etc). The distinction is
6074 that "executable" commands cannot return anything other than a boolean
6075 result and can only support numeric or string input, whereas some
6076 discoverable commands may only be for direct use through
6077 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
6078 pointers, or other custom uses. The "executable" commands are to
6079 support parameterisations of ENGINE behaviour that can be
6080 unambiguously defined by ENGINEs and used consistently across any
6081 OpenSSL-based application. Commands have been added to all the
6082 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
6083 control over shared-library paths without source code alterations.
6086 *) Changed all ENGINE implementations to dynamically allocate their
6087 ENGINEs rather than declaring them statically. Apart from this being
6088 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
6089 this also allows the implementations to compile without using the
6090 internal engine_int.h header.
6093 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
6094 'const' value. Any code that should be able to modify a RAND_METHOD
6095 should already have non-const pointers to it (ie. they should only
6096 modify their own ones).
6099 *) Made a variety of little tweaks to the ENGINE code.
6100 - "atalla" and "ubsec" string definitions were moved from header files
6101 to C code. "nuron" string definitions were placed in variables
6102 rather than hard-coded - allowing parameterisation of these values
6103 later on via ctrl() commands.
6104 - Removed unused "#if 0"'d code.
6105 - Fixed engine list iteration code so it uses ENGINE_free() to release
6106 structural references.
6107 - Constified the RAND_METHOD element of ENGINE structures.
6108 - Constified various get/set functions as appropriate and added
6109 missing functions (including a catch-all ENGINE_cpy that duplicates
6110 all ENGINE values onto a new ENGINE except reference counts/state).
6111 - Removed NULL parameter checks in get/set functions. Setting a method
6112 or function to NULL is a way of cancelling out a previously set
6113 value. Passing a NULL ENGINE parameter is just plain stupid anyway
6114 and doesn't justify the extra error symbols and code.
6115 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
6116 flags from engine_int.h to engine.h.
6117 - Changed prototypes for ENGINE handler functions (init(), finish(),
6118 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
6121 *) Implement binary inversion algorithm for BN_mod_inverse in addition
6122 to the algorithm using long division. The binary algorithm can be
6123 used only if the modulus is odd. On 32-bit systems, it is faster
6124 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
6125 roughly 5-15% for 256-bit moduli), so we use it only for moduli
6126 up to 450 bits. In 64-bit environments, the binary algorithm
6127 appears to be advantageous for much longer moduli; here we use it
6128 for moduli up to 2048 bits.
6131 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
6132 could not support the combine flag in choice fields.
6135 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
6136 extensions from a certificate request to the certificate.
6139 *) Allow multiple 'certopt' and 'nameopt' options to be separated
6140 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
6141 file: this allows the display of the certificate about to be
6142 signed to be customised, to allow certain fields to be included
6143 or excluded and extension details. The old system didn't display
6144 multicharacter strings properly, omitted fields not in the policy
6145 and couldn't display additional details such as extensions.
6148 *) Function EC_POINTs_mul for multiple scalar multiplication
6149 of an arbitrary number of elliptic curve points
6150 \sum scalars[i]*points[i],
6151 optionally including the generator defined for the EC_GROUP:
6152 scalar*generator + \sum scalars[i]*points[i].
6154 EC_POINT_mul is a simple wrapper function for the typical case
6155 that the point list has just one item (besides the optional
6159 *) First EC_METHODs for curves over GF(p):
6161 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
6162 operations and provides various method functions that can also
6163 operate with faster implementations of modular arithmetic.
6165 EC_GFp_mont_method() reuses most functions that are part of
6166 EC_GFp_simple_method, but uses Montgomery arithmetic.
6168 [Bodo Moeller; point addition and point doubling
6169 implementation directly derived from source code provided by
6170 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
6172 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
6173 crypto/ec/ec_lib.c):
6175 Curves are EC_GROUP objects (with an optional group generator)
6176 based on EC_METHODs that are built into the library.
6178 Points are EC_POINT objects based on EC_GROUP objects.
6180 Most of the framework would be able to handle curves over arbitrary
6181 finite fields, but as there are no obvious types for fields other
6182 than GF(p), some functions are limited to that for now.
6185 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
6186 that the file contains a complete HTTP response.
6189 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
6190 change the def and num file printf format specifier from "%-40sXXX"
6191 to "%-39s XXX". The latter will always guarantee a space after the
6192 field while the former will cause them to run together if the field
6193 is 40 of more characters long.
6196 *) Constify the cipher and digest 'method' functions and structures
6197 and modify related functions to take constant EVP_MD and EVP_CIPHER
6201 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
6202 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
6205 *) Modify EVP_Digest*() routines so they now return values. Although the
6206 internal software routines can never fail additional hardware versions
6210 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
6212 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
6213 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
6216 ERR_R_NESTED_ASN1_ERROR
6218 ERR_R_MISSING_ASN1_EOS
6219 were 4 .. 9, conflicting with
6220 ERR_LIB_RSA (= ERR_R_RSA_LIB)
6222 ERR_LIB_PEM (= ERR_R_PEM_LIB).
6223 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
6225 Add new error code 'ERR_R_INTERNAL_ERROR'.
6228 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
6232 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
6233 sets the subject name for a new request or supersedes the
6234 subject name in a given request. Formats that can be parsed are
6235 'CN=Some Name, OU=myOU, C=IT'
6237 'CN=Some Name/OU=myOU/C=IT'.
6239 Add options '-batch' and '-verbose' to 'openssl req'.
6240 [Massimiliano Pala <madwolf@hackmasters.net>]
6242 *) Introduce the possibility to access global variables through
6243 functions on platform were that's the best way to handle exporting
6244 global variables in shared libraries. To enable this functionality,
6245 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
6246 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
6247 is normally done by Configure or something similar).
6249 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
6250 in the source file (foo.c) like this:
6252 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
6253 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
6255 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
6256 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
6258 OPENSSL_DECLARE_GLOBAL(int,foo);
6259 #define foo OPENSSL_GLOBAL_REF(foo)
6260 OPENSSL_DECLARE_GLOBAL(double,bar);
6261 #define bar OPENSSL_GLOBAL_REF(bar)
6263 The #defines are very important, and therefore so is including the
6264 header file everywhere where the defined globals are used.
6266 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
6267 of ASN.1 items, but that structure is a bit different.
6269 The largest change is in util/mkdef.pl which has been enhanced with
6270 better and easier to understand logic to choose which symbols should
6271 go into the Windows .def files as well as a number of fixes and code
6272 cleanup (among others, algorithm keywords are now sorted
6273 lexicographically to avoid constant rewrites).
6276 *) In BN_div() keep a copy of the sign of 'num' before writing the
6277 result to 'rm' because if rm==num the value will be overwritten
6278 and produce the wrong result if 'num' is negative: this caused
6279 problems with BN_mod() and BN_nnmod().
6282 *) Function OCSP_request_verify(). This checks the signature on an
6283 OCSP request and verifies the signer certificate. The signer
6284 certificate is just checked for a generic purpose and OCSP request
6288 *) Add OCSP_check_validity() function to check the validity of OCSP
6289 responses. OCSP responses are prepared in real time and may only
6290 be a few seconds old. Simply checking that the current time lies
6291 between thisUpdate and nextUpdate max reject otherwise valid responses
6292 caused by either OCSP responder or client clock inaccuracy. Instead
6293 we allow thisUpdate and nextUpdate to fall within a certain period of
6294 the current time. The age of the response can also optionally be
6295 checked. Two new options -validity_period and -status_age added to
6299 *) If signature or public key algorithm is unrecognized print out its
6300 OID rather that just UNKNOWN.
6303 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
6304 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
6305 ID to be generated from the issuer certificate alone which can then be
6306 passed to OCSP_id_issuer_cmp().
6309 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
6310 ASN1 modules to export functions returning ASN1_ITEM pointers
6311 instead of the ASN1_ITEM structures themselves. This adds several
6312 new macros which allow the underlying ASN1 function/structure to
6313 be accessed transparently. As a result code should not use ASN1_ITEM
6314 references directly (such as &X509_it) but instead use the relevant
6315 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
6316 use of the new ASN1 code on platforms where exporting structures
6317 is problematical (for example in shared libraries) but exporting
6318 functions returning pointers to structures is not.
6321 *) Add support for overriding the generation of SSL/TLS session IDs.
6322 These callbacks can be registered either in an SSL_CTX or per SSL.
6323 The purpose of this is to allow applications to control, if they wish,
6324 the arbitrary values chosen for use as session IDs, particularly as it
6325 can be useful for session caching in multiple-server environments. A
6326 command-line switch for testing this (and any client code that wishes
6327 to use such a feature) has been added to "s_server".
6328 [Geoff Thorpe, Lutz Jaenicke]
6330 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
6331 of the form '#if defined(...) || defined(...) || ...' and
6332 '#if !defined(...) && !defined(...) && ...'. This also avoids
6333 the growing number of special cases it was previously handling.
6336 *) Make all configuration macros available for application by making
6337 sure they are available in opensslconf.h, by giving them names starting
6338 with "OPENSSL_" to avoid conflicts with other packages and by making
6339 sure e_os2.h will cover all platform-specific cases together with
6341 Additionally, it is now possible to define configuration/platform-
6342 specific names (called "system identities"). In the C code, these
6343 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
6344 macro with the name beginning with "OPENSSL_SYS_", which is determined
6345 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
6349 *) New option -set_serial to 'req' and 'x509' this allows the serial
6350 number to use to be specified on the command line. Previously self
6351 signed certificates were hard coded with serial number 0 and the
6352 CA options of 'x509' had to use a serial number in a file which was
6356 *) New options to 'ca' utility to support V2 CRL entry extensions.
6357 Currently CRL reason, invalidity date and hold instruction are
6358 supported. Add new CRL extensions to V3 code and some new objects.
6361 *) New function EVP_CIPHER_CTX_set_padding() this is used to
6362 disable standard block padding (aka PKCS#5 padding) in the EVP
6363 API, which was previously mandatory. This means that the data is
6364 not padded in any way and so the total length much be a multiple
6365 of the block size, otherwise an error occurs.
6368 *) Initial (incomplete) OCSP SSL support.
6371 *) New function OCSP_parse_url(). This splits up a URL into its host,
6372 port and path components: primarily to parse OCSP URLs. New -url
6373 option to ocsp utility.
6376 *) New nonce behavior. The return value of OCSP_check_nonce() now
6377 reflects the various checks performed. Applications can decide
6378 whether to tolerate certain situations such as an absent nonce
6379 in a response when one was present in a request: the ocsp application
6380 just prints out a warning. New function OCSP_add1_basic_nonce()
6381 this is to allow responders to include a nonce in a response even if
6382 the request is nonce-less.
6385 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
6386 skipped when using openssl x509 multiple times on a single input file,
6387 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
6390 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
6391 set string type: to handle setting ASN1_TIME structures. Fix ca
6392 utility to correctly initialize revocation date of CRLs.
6395 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
6396 the clients preferred ciphersuites and rather use its own preferences.
6397 Should help to work around M$ SGC (Server Gated Cryptography) bug in
6398 Internet Explorer by ensuring unchanged hash method during stepup.
6399 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
6402 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
6403 to aes and add a new 'exist' option to print out symbols that don't
6407 *) Additional options to ocsp utility to allow flags to be set and
6408 additional certificates supplied.
6411 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
6412 OCSP client a number of certificate to only verify the response
6416 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
6417 handle the new API. Currently only ECB, CBC modes supported. Add new
6420 Add TLS AES ciphersuites as described in RFC3268, "Advanced
6421 Encryption Standard (AES) Ciphersuites for Transport Layer
6422 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
6423 not enabled by default and were not part of the "ALL" ciphersuite
6424 alias because they were not yet official; they could be
6425 explicitly requested by specifying the "AESdraft" ciphersuite
6426 group alias. In the final release of OpenSSL 0.9.7, the group
6427 alias is called "AES" and is part of "ALL".)
6428 [Ben Laurie, Steve Henson, Bodo Moeller]
6430 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
6431 request to response.
6434 *) Functions for OCSP responders. OCSP_request_onereq_count(),
6435 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
6436 extract information from a certificate request. OCSP_response_create()
6437 creates a response and optionally adds a basic response structure.
6438 OCSP_basic_add1_status() adds a complete single response to a basic
6439 response and returns the OCSP_SINGLERESP structure just added (to allow
6440 extensions to be included for example). OCSP_basic_add1_cert() adds a
6441 certificate to a basic response and OCSP_basic_sign() signs a basic
6442 response with various flags. New helper functions ASN1_TIME_check()
6443 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
6444 (converts ASN1_TIME to GeneralizedTime).
6447 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
6448 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
6449 structure from a certificate. X509_pubkey_digest() digests the public_key
6450 contents: this is used in various key identifiers.
6453 *) Make sk_sort() tolerate a NULL argument.
6454 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
6456 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
6457 passed by the function are trusted implicitly. If any of them signed the
6458 response then it is assumed to be valid and is not verified.
6461 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
6462 to data. This was previously part of the PKCS7 ASN1 code. This
6463 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
6464 [Steve Henson, reported by Kenneth R. Robinette
6465 <support@securenetterm.com>]
6467 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
6468 routines: without these tracing memory leaks is very painful.
6469 Fix leaks in PKCS12 and PKCS7 routines.
6472 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
6473 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
6474 effectively meant GeneralizedTime would never be used. Now it
6475 is initialised to -1 but X509_time_adj() now has to check the value
6476 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
6477 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
6478 [Steve Henson, reported by Kenneth R. Robinette
6479 <support@securenetterm.com>]
6481 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
6482 result in a zero length in the ASN1_INTEGER structure which was
6483 not consistent with the structure when d2i_ASN1_INTEGER() was used
6484 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
6485 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
6486 where it did not print out a minus for negative ASN1_INTEGER.
6489 *) Add summary printout to ocsp utility. The various functions which
6490 convert status values to strings have been renamed to:
6491 OCSP_response_status_str(), OCSP_cert_status_str() and
6492 OCSP_crl_reason_str() and are no longer static. New options
6493 to verify nonce values and to disable verification. OCSP response
6494 printout format cleaned up.
6497 *) Add additional OCSP certificate checks. These are those specified
6498 in RFC2560. This consists of two separate checks: the CA of the
6499 certificate being checked must either be the OCSP signer certificate
6500 or the issuer of the OCSP signer certificate. In the latter case the
6501 OCSP signer certificate must contain the OCSP signing extended key
6502 usage. This check is performed by attempting to match the OCSP
6503 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
6504 in the OCSP_CERTID structures of the response.
6507 *) Initial OCSP certificate verification added to OCSP_basic_verify()
6508 and related routines. This uses the standard OpenSSL certificate
6509 verify routines to perform initial checks (just CA validity) and
6510 to obtain the certificate chain. Then additional checks will be
6511 performed on the chain. Currently the root CA is checked to see
6512 if it is explicitly trusted for OCSP signing. This is used to set
6513 a root CA as a global signing root: that is any certificate that
6514 chains to that CA is an acceptable OCSP signing certificate.
6517 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
6518 extensions from a separate configuration file.
6519 As when reading extensions from the main configuration file,
6520 the '-extensions ...' option may be used for specifying the
6522 [Massimiliano Pala <madwolf@comune.modena.it>]
6524 *) New OCSP utility. Allows OCSP requests to be generated or
6525 read. The request can be sent to a responder and the output
6526 parsed, outputed or printed in text form. Not complete yet:
6527 still needs to check the OCSP response validity.
6530 *) New subcommands for 'openssl ca':
6531 'openssl ca -status <serial>' prints the status of the cert with
6532 the given serial number (according to the index file).
6533 'openssl ca -updatedb' updates the expiry status of certificates
6535 [Massimiliano Pala <madwolf@comune.modena.it>]
6537 *) New '-newreq-nodes' command option to CA.pl. This is like
6538 '-newreq', but calls 'openssl req' with the '-nodes' option
6539 so that the resulting key is not encrypted.
6540 [Damien Miller <djm@mindrot.org>]
6542 *) New configuration for the GNU Hurd.
6543 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
6545 *) Initial code to implement OCSP basic response verify. This
6546 is currently incomplete. Currently just finds the signer's
6547 certificate and verifies the signature on the response.
6550 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
6551 value of OPENSSLDIR. This is available via the new '-d' option
6552 to 'openssl version', and is also included in 'openssl version -a'.
6555 *) Allowing defining memory allocation callbacks that will be given
6556 file name and line number information in additional arguments
6557 (a const char* and an int). The basic functionality remains, as
6558 well as the original possibility to just replace malloc(),
6559 realloc() and free() by functions that do not know about these
6560 additional arguments. To register and find out the current
6561 settings for extended allocation functions, the following
6562 functions are provided:
6564 CRYPTO_set_mem_ex_functions
6565 CRYPTO_set_locked_mem_ex_functions
6566 CRYPTO_get_mem_ex_functions
6567 CRYPTO_get_locked_mem_ex_functions
6569 These work the same way as CRYPTO_set_mem_functions and friends.
6570 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
6571 extended allocation function is enabled.
6572 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
6573 a conventional allocation function is enabled.
6574 [Richard Levitte, Bodo Moeller]
6576 *) Finish off removing the remaining LHASH function pointer casts.
6577 There should no longer be any prototype-casting required when using
6578 the LHASH abstraction, and any casts that remain are "bugs". See
6579 the callback types and macros at the head of lhash.h for details
6580 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
6583 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
6584 If /dev/[u]random devices are not available or do not return enough
6585 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
6587 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
6588 /etc/entropy will be queried once each in this sequence, quering stops
6589 when enough entropy was collected without querying more sockets.
6592 *) Change the Unix RAND_poll() variant to be able to poll several
6593 random devices, as specified by DEVRANDOM, until a sufficient amount
6594 of data has been collected. We spend at most 10 ms on each file
6595 (select timeout) and read in non-blocking mode. DEVRANDOM now
6596 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
6597 (previously it was just the string "/dev/urandom"), so on typical
6598 platforms the 10 ms delay will never occur.
6599 Also separate out the Unix variant to its own file, rand_unix.c.
6600 For VMS, there's a currently-empty rand_vms.c.
6603 *) Move OCSP client related routines to ocsp_cl.c. These
6604 provide utility functions which an application needing
6605 to issue a request to an OCSP responder and analyse the
6606 response will typically need: as opposed to those which an
6607 OCSP responder itself would need which will be added later.
6609 OCSP_request_sign() signs an OCSP request with an API similar
6610 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
6611 response. OCSP_response_get1_basic() extracts basic response
6612 from response. OCSP_resp_find_status(): finds and extracts status
6613 information from an OCSP_CERTID structure (which will be created
6614 when the request structure is built). These are built from lower
6615 level functions which work on OCSP_SINGLERESP structures but
6616 wont normally be used unless the application wishes to examine
6617 extensions in the OCSP response for example.
6619 Replace nonce routines with a pair of functions.
6620 OCSP_request_add1_nonce() adds a nonce value and optionally
6621 generates a random value. OCSP_check_nonce() checks the
6622 validity of the nonce in an OCSP response.
6625 *) Change function OCSP_request_add() to OCSP_request_add0_id().
6626 This doesn't copy the supplied OCSP_CERTID and avoids the
6627 need to free up the newly created id. Change return type
6628 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
6629 This can then be used to add extensions to the request.
6630 Deleted OCSP_request_new(), since most of its functionality
6631 is now in OCSP_REQUEST_new() (and the case insensitive name
6632 clash) apart from the ability to set the request name which
6633 will be added elsewhere.
6636 *) Update OCSP API. Remove obsolete extensions argument from
6637 various functions. Extensions are now handled using the new
6638 OCSP extension code. New simple OCSP HTTP function which
6639 can be used to send requests and parse the response.
6642 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
6643 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
6644 uses the special reorder version of SET OF to sort the attributes
6645 and reorder them to match the encoded order. This resolves a long
6646 standing problem: a verify on a PKCS7 structure just after signing
6647 it used to fail because the attribute order did not match the
6648 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
6649 it uses the received order. This is necessary to tolerate some broken
6650 software that does not order SET OF. This is handled by encoding
6651 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
6652 to produce the required SET OF.
6655 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
6656 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
6657 files to get correct declarations of the ASN.1 item variables.
6660 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
6661 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
6662 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
6663 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
6664 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
6665 ASN1_ITEM and no wrapper functions.
6668 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
6669 replace the old function pointer based I/O routines. Change most of
6670 the *_d2i_bio() and *_d2i_fp() functions to use these.
6673 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
6674 lines, recognice more "algorithms" that can be deselected, and make
6675 it complain about algorithm deselection that isn't recognised.
6678 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
6679 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
6680 to use new functions. Add NO_ASN1_OLD which can be set to remove
6681 some old style ASN1 functions: this can be used to determine if old
6682 code will still work when these eventually go away.
6685 *) New extension functions for OCSP structures, these follow the
6686 same conventions as certificates and CRLs.
6689 *) New function X509V3_add1_i2d(). This automatically encodes and
6690 adds an extension. Its behaviour can be customised with various
6691 flags to append, replace or delete. Various wrappers added for
6692 certifcates and CRLs.
6695 *) Fix to avoid calling the underlying ASN1 print routine when
6696 an extension cannot be parsed. Correct a typo in the
6697 OCSP_SERVICELOC extension. Tidy up print OCSP format.
6700 *) Make mkdef.pl parse some of the ASN1 macros and add appropriate
6701 entries for variables.
6704 *) Add functionality to apps/openssl.c for detecting locking
6705 problems: As the program is single-threaded, all we have
6706 to do is register a locking callback using an array for
6707 storing which locks are currently held by the program.
6710 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
6711 SSL_get_ex_data_X509_STORE_idx(), which is used in
6712 ssl_verify_cert_chain() and thus can be called at any time
6713 during TLS/SSL handshakes so that thread-safety is essential.
6714 Unfortunately, the ex_data design is not at all suited
6715 for multi-threaded use, so it probably should be abolished.
6718 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
6719 [Broadcom, tweaked and integrated by Geoff Thorpe]
6721 *) Move common extension printing code to new function
6722 X509V3_print_extensions(). Reorganise OCSP print routines and
6723 implement some needed OCSP ASN1 functions. Add OCSP extensions.
6726 *) New function X509_signature_print() to remove duplication in some
6730 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
6731 set (this was treated exactly the same as SET OF previously). This
6732 is used to reorder the STACK representing the structure to match the
6733 encoding. This will be used to get round a problem where a PKCS7
6734 structure which was signed could not be verified because the STACK
6735 order did not reflect the encoded order.
6738 *) Reimplement the OCSP ASN1 module using the new code.
6741 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
6742 for its ASN1 operations. The old style function pointers still exist
6743 for now but they will eventually go away.
6746 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
6747 completely replaces the old ASN1 functionality with a table driven
6748 encoder and decoder which interprets an ASN1_ITEM structure describing
6749 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
6750 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
6751 has also been converted to the new form.
6754 *) Change BN_mod_exp_recp so that negative moduli are tolerated
6755 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
6756 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
6757 for negative moduli.
6760 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
6761 of not touching the result's sign bit.
6764 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
6768 *) Changed the LHASH code to use prototypes for callbacks, and created
6769 macros to declare and implement thin (optionally static) functions
6770 that provide type-safety and avoid function pointer casting for the
6771 type-specific callbacks.
6774 *) Added Kerberos Cipher Suites to be used with TLS, as written in
6776 [Veers Staats <staatsvr@asc.hpc.mil>,
6777 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
6779 *) Reformat the FAQ so the different questions and answers can be divided
6780 in sections depending on the subject.
6783 *) Have the zlib compression code load ZLIB.DLL dynamically under
6787 *) New function BN_mod_sqrt for computing square roots modulo a prime
6788 (using the probabilistic Tonelli-Shanks algorithm unless
6789 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
6790 be handled deterministically).
6791 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
6793 *) Make BN_mod_inverse faster by explicitly handling small quotients
6794 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
6795 512 bits], about 30% for larger ones [1024 or 2048 bits].)
6798 *) New function BN_kronecker.
6801 *) Fix BN_gcd so that it works on negative inputs; the result is
6802 positive unless both parameters are zero.
6803 Previously something reasonably close to an infinite loop was
6804 possible because numbers could be growing instead of shrinking
6805 in the implementation of Euclid's algorithm.
6808 *) Fix BN_is_word() and BN_is_one() macros to take into account the
6809 sign of the number in question.
6811 Fix BN_is_word(a,w) to work correctly for w == 0.
6813 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
6814 because its test if the absolute value of 'a' equals 'w'.
6815 Note that BN_abs_is_word does *not* handle w == 0 reliably;
6816 it exists mostly for use in the implementations of BN_is_zero(),
6817 BN_is_one(), and BN_is_word().
6820 *) New function BN_swap.
6823 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
6824 the exponentiation functions are more likely to produce reasonable
6825 results on negative inputs.
6828 *) Change BN_mod_mul so that the result is always non-negative.
6829 Previously, it could be negative if one of the factors was negative;
6830 I don't think anyone really wanted that behaviour.
6833 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
6834 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
6835 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
6836 and add new functions:
6845 BN_mod_lshift1_quick
6849 These functions always generate non-negative results.
6851 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
6852 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
6854 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
6855 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
6856 be reduced modulo m.
6857 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
6860 The following entry accidentally appeared in the CHANGES file
6861 distributed with OpenSSL 0.9.7. The modifications described in
6862 it do *not* apply to OpenSSL 0.9.7.
6864 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
6865 was actually never needed) and in BN_mul(). The removal in BN_mul()
6866 required a small change in bn_mul_part_recursive() and the addition
6867 of the functions bn_cmp_part_words(), bn_sub_part_words() and
6868 bn_add_part_words(), which do the same thing as bn_cmp_words(),
6869 bn_sub_words() and bn_add_words() except they take arrays with
6874 *) In 'openssl passwd', verify passwords read from the terminal
6875 unless the '-salt' option is used (which usually means that
6876 verification would just waste user's time since the resulting
6877 hash is going to be compared with some given password hash)
6878 or the new '-noverify' option is used.
6880 This is an incompatible change, but it does not affect
6881 non-interactive use of 'openssl passwd' (passwords on the command
6882 line, '-stdin' option, '-in ...' option) and thus should not
6886 *) Remove all references to RSAref, since there's no more need for it.
6889 *) Make DSO load along a path given through an environment variable
6890 (SHLIB_PATH) with shl_load().
6893 *) Constify the ENGINE code as a result of BIGNUM constification.
6894 Also constify the RSA code and most things related to it. In a
6895 few places, most notable in the depth of the ASN.1 code, ugly
6896 casts back to non-const were required (to be solved at a later
6900 *) Make it so the openssl application has all engines loaded by default.
6903 *) Constify the BIGNUM routines a little more.
6906 *) Add the following functions:
6908 ENGINE_load_cswift()
6910 ENGINE_load_atalla()
6912 ENGINE_load_builtin_engines()
6914 That way, an application can itself choose if external engines that
6915 are built-in in OpenSSL shall ever be used or not. The benefit is
6916 that applications won't have to be linked with libdl or other dso
6917 libraries unless it's really needed.
6919 Changed 'openssl engine' to load all engines on demand.
6920 Changed the engine header files to avoid the duplication of some
6921 declarations (they differed!).
6924 *) 'openssl engine' can now list capabilities.
6927 *) Better error reporting in 'openssl engine'.
6930 *) Never call load_dh_param(NULL) in s_server.
6933 *) Add engine application. It can currently list engines by name and
6934 identity, and test if they are actually available.
6937 *) Improve RPM specification file by forcing symbolic linking and making
6938 sure the installed documentation is also owned by root.root.
6939 [Damien Miller <djm@mindrot.org>]
6941 *) Give the OpenSSL applications more possibilities to make use of
6942 keys (public as well as private) handled by engines.
6945 *) Add OCSP code that comes from CertCo.
6948 *) Add VMS support for the Rijndael code.
6951 *) Added untested support for Nuron crypto accelerator.
6954 *) Add support for external cryptographic devices. This code was
6955 previously distributed separately as the "engine" branch.
6956 [Geoff Thorpe, Richard Levitte]
6958 *) Rework the filename-translation in the DSO code. It is now possible to
6959 have far greater control over how a "name" is turned into a filename
6960 depending on the operating environment and any oddities about the
6961 different shared library filenames on each system.
6964 *) Support threads on FreeBSD-elf in Configure.
6967 *) Fix for SHA1 assembly problem with MASM: it produces
6968 warnings about corrupt line number information when assembling
6969 with debugging information. This is caused by the overlapping
6971 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
6974 NCONF_get_number() has no error checking at all. As a replacement,
6975 NCONF_get_number_e() is defined (_e for "error checking") and is
6976 promoted strongly. The old NCONF_get_number is kept around for
6977 binary backward compatibility.
6978 Make it possible for methods to load from something other than a BIO,
6979 by providing a function pointer that is given a name instead of a BIO.
6980 For example, this could be used to load configuration data from an
6984 *) Fix for non blocking accept BIOs. Added new I/O special reason
6985 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
6986 with non blocking I/O was not possible because no retry code was
6987 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
6991 *) Added the beginnings of Rijndael support.
6994 *) Fix for bug in DirectoryString mask setting. Add support for
6995 X509_NAME_print_ex() in 'req' and X509_print_ex() function
6996 to allow certificate printing to more controllable, additional
6997 'certopt' option to 'x509' to allow new printing options to be
7001 *) Clean old EAY MD5 hack from e_os.h.
7004 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
7006 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
7007 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
7008 [Joe Orton, Steve Henson]
7010 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
7012 *) Fix additional bug revealed by the NISCC test suite:
7014 Stop bug triggering large recursion when presented with
7015 certain ASN.1 tags (CVE-2003-0851)
7018 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
7020 *) Fix various bugs revealed by running the NISCC test suite:
7022 Stop out of bounds reads in the ASN1 code when presented with
7023 invalid tags (CVE-2003-0543 and CVE-2003-0544).
7025 If verify callback ignores invalid public key errors don't try to check
7026 certificate signature with the NULL public key.
7030 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
7031 if the server requested one: as stated in TLS 1.0 and SSL 3.0
7035 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
7036 extra data after the compression methods not only for TLS 1.0
7037 but also for SSL 3.0 (as required by the specification).
7038 [Bodo Moeller; problem pointed out by Matthias Loepfe]
7040 *) Change X509_certificate_type() to mark the key as exported/exportable
7041 when it's 512 *bits* long, not 512 bytes.
7044 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
7046 *) Countermeasure against the Klima-Pokorny-Rosa extension of
7047 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
7048 a protocol version number mismatch like a decryption error
7049 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
7052 *) Turn on RSA blinding by default in the default implementation
7053 to avoid a timing attack. Applications that don't want it can call
7054 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
7055 They would be ill-advised to do so in most cases.
7056 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
7058 *) Change RSA blinding code so that it works when the PRNG is not
7059 seeded (in this case, the secret RSA exponent is abused as
7060 an unpredictable seed -- if it is not unpredictable, there
7061 is no point in blinding anyway). Make RSA blinding thread-safe
7062 by remembering the creator's thread ID in rsa->blinding and
7063 having all other threads use local one-time blinding factors
7064 (this requires more computation than sharing rsa->blinding, but
7065 avoids excessive locking; and if an RSA object is not shared
7066 between threads, blinding will still be very fast).
7069 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
7071 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
7072 via timing by performing a MAC computation even if incorrrect
7073 block cipher padding has been found. This is a countermeasure
7074 against active attacks where the attacker has to distinguish
7075 between bad padding and a MAC verification error. (CVE-2003-0078)
7077 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
7078 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
7079 Martin Vuagnoux (EPFL, Ilion)]
7081 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
7083 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
7084 memory from it's contents. This is done with a counter that will
7085 place alternating values in each byte. This can be used to solve
7086 two issues: 1) the removal of calls to memset() by highly optimizing
7087 compilers, and 2) cleansing with other values than 0, since those can
7088 be read through on certain media, for example a swap space on disk.
7091 *) Bugfix: client side session caching did not work with external caching,
7092 because the session->cipher setting was not restored when reloading
7093 from the external cache. This problem was masked, when
7094 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
7095 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
7098 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
7099 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
7100 [Zeev Lieber <zeev-l@yahoo.com>]
7102 *) Undo an undocumented change introduced in 0.9.6e which caused
7103 repeated calls to OpenSSL_add_all_ciphers() and
7104 OpenSSL_add_all_digests() to be ignored, even after calling
7108 *) Change the default configuration reader to deal with last line not
7109 being properly terminated.
7112 *) Change X509_NAME_cmp() so it applies the special rules on handling
7113 DN values that are of type PrintableString, as well as RDNs of type
7114 emailAddress where the value has the type ia5String.
7115 [stefank@valicert.com via Richard Levitte]
7117 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
7118 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
7119 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
7120 the bitwise-OR of the two for use by the majority of applications
7121 wanting this behaviour, and update the docs. The documented
7122 behaviour and actual behaviour were inconsistent and had been
7123 changing anyway, so this is more a bug-fix than a behavioural
7125 [Geoff Thorpe, diagnosed by Nadav Har'El]
7127 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
7128 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
7131 *) Fix initialization code race conditions in
7132 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
7133 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
7134 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
7135 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
7136 ssl2_get_cipher_by_char(),
7137 ssl3_get_cipher_by_char().
7138 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
7140 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
7141 the cached sessions are flushed, as the remove_cb() might use ex_data
7142 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
7143 (see [openssl.org #212]).
7144 [Geoff Thorpe, Lutz Jaenicke]
7146 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
7147 length, instead of the encoding length to d2i_ASN1_OBJECT.
7150 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
7152 *) [In 0.9.6g-engine release:]
7153 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
7154 [Lynn Gazis <lgazis@rainbow.com>]
7156 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
7158 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
7159 and get fix the header length calculation.
7160 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
7161 Alon Kantor <alonk@checkpoint.com> (and others),
7164 *) Use proper error handling instead of 'assertions' in buffer
7165 overflow checks added in 0.9.6e. This prevents DoS (the
7166 assertions could call abort()).
7167 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
7169 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
7171 *) Add various sanity checks to asn1_get_length() to reject
7172 the ASN1 length bytes if they exceed sizeof(long), will appear
7173 negative or the content length exceeds the length of the
7175 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
7177 *) Fix cipher selection routines: ciphers without encryption had no flags
7178 for the cipher strength set and where therefore not handled correctly
7179 by the selection routines (PR #130).
7182 *) Fix EVP_dsa_sha macro.
7186 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
7187 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
7188 that was added in OpenSSL 0.9.6d.
7190 As the countermeasure turned out to be incompatible with some
7191 broken SSL implementations, the new option is part of SSL_OP_ALL.
7192 SSL_OP_ALL is usually employed when compatibility with weird SSL
7193 implementations is desired (e.g. '-bugs' option to 's_client' and
7194 's_server'), so the new option is automatically set in many
7198 *) Changes in security patch:
7200 Changes marked "(CHATS)" were sponsored by the Defense Advanced
7201 Research Projects Agency (DARPA) and Air Force Research Laboratory,
7202 Air Force Materiel Command, USAF, under agreement number
7205 *) Add various sanity checks to asn1_get_length() to reject
7206 the ASN1 length bytes if they exceed sizeof(long), will appear
7207 negative or the content length exceeds the length of the
7208 supplied buffer. (CVE-2002-0659)
7209 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
7211 *) Assertions for various potential buffer overflows, not known to
7213 [Ben Laurie (CHATS)]
7215 *) Various temporary buffers to hold ASCII versions of integers were
7216 too small for 64 bit platforms. (CVE-2002-0655)
7217 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
7219 *) Remote buffer overflow in SSL3 protocol - an attacker could
7220 supply an oversized session ID to a client. (CVE-2002-0656)
7221 [Ben Laurie (CHATS)]
7223 *) Remote buffer overflow in SSL2 protocol - an attacker could
7224 supply an oversized client master key. (CVE-2002-0656)
7225 [Ben Laurie (CHATS)]
7227 Changes between 0.9.6c and 0.9.6d [9 May 2002]
7229 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
7230 encoded as NULL) with id-dsa-with-sha1.
7231 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
7233 *) Check various X509_...() return values in apps/req.c.
7234 [Nils Larsch <nla@trustcenter.de>]
7236 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
7237 an end-of-file condition would erronously be flagged, when the CRLF
7238 was just at the end of a processed block. The bug was discovered when
7239 processing data through a buffering memory BIO handing the data to a
7240 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
7241 <ptsekov@syntrex.com> and Nedelcho Stanev.
7244 *) Implement a countermeasure against a vulnerability recently found
7245 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
7246 before application data chunks to avoid the use of known IVs
7247 with data potentially chosen by the attacker.
7250 *) Fix length checks in ssl3_get_client_hello().
7253 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
7254 to prevent ssl3_read_internal() from incorrectly assuming that
7255 ssl3_read_bytes() found application data while handshake
7256 processing was enabled when in fact s->s3->in_read_app_data was
7257 merely automatically cleared during the initial handshake.
7258 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
7260 *) Fix object definitions for Private and Enterprise: they were not
7261 recognized in their shortname (=lowercase) representation. Extend
7262 obj_dat.pl to issue an error when using undefined keywords instead
7263 of silently ignoring the problem (Svenning Sorensen
7264 <sss@sss.dnsalias.net>).
7267 *) Fix DH_generate_parameters() so that it works for 'non-standard'
7268 generators, i.e. generators other than 2 and 5. (Previously, the
7269 code did not properly initialise the 'add' and 'rem' values to
7270 BN_generate_prime().)
7272 In the new general case, we do not insist that 'generator' is
7273 actually a primitive root: This requirement is rather pointless;
7274 a generator of the order-q subgroup is just as good, if not
7278 *) Map new X509 verification errors to alerts. Discovered and submitted by
7279 Tom Wu <tom@arcot.com>.
7282 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
7283 returning non-zero before the data has been completely received
7284 when using non-blocking I/O.
7285 [Bodo Moeller; problem pointed out by John Hughes]
7287 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
7288 [Ben Laurie, Lutz Jaenicke]
7290 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
7291 Yoram Zahavi <YoramZ@gilian.com>).
7294 *) Add information about CygWin 1.3 and on, and preserve proper
7295 configuration for the versions before that.
7296 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
7298 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
7299 check whether we deal with a copy of a session and do not delete from
7300 the cache in this case. Problem reported by "Izhar Shoshani Levi"
7301 <izhar@checkpoint.com>.
7304 *) Do not store session data into the internal session cache, if it
7305 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
7306 flag is set). Proposed by Aslam <aslam@funk.com>.
7309 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
7313 *) [In 0.9.6d-engine release:]
7314 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
7315 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
7317 *) Add the configuration target linux-s390x.
7318 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
7320 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
7321 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
7322 variable as an indication that a ClientHello message has been
7323 received. As the flag value will be lost between multiple
7324 invocations of ssl3_accept when using non-blocking I/O, the
7325 function may not be aware that a handshake has actually taken
7326 place, thus preventing a new session from being added to the
7329 To avoid this problem, we now set s->new_session to 2 instead of
7330 using a local variable.
7331 [Lutz Jaenicke, Bodo Moeller]
7333 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
7334 if the SSL_R_LENGTH_MISMATCH error is detected.
7335 [Geoff Thorpe, Bodo Moeller]
7337 *) New 'shared_ldflag' column in Configure platform table.
7340 *) Fix EVP_CIPHER_mode macro.
7341 ["Dan S. Camper" <dan@bti.net>]
7343 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
7344 type, we must throw them away by setting rr->length to 0.
7345 [D P Chang <dpc@qualys.com>]
7347 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
7349 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
7350 <Dominikus.Scherkl@biodata.com>. (The previous implementation
7351 worked incorrectly for those cases where range = 10..._2 and
7352 3*range is two bits longer than range.)
7355 *) Only add signing time to PKCS7 structures if it is not already
7359 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
7360 OBJ_ld_ce should be OBJ_id_ce.
7361 Also some ip-pda OIDs in crypto/objects/objects.txt were
7362 incorrect (cf. RFC 3039).
7363 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
7365 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
7366 returns early because it has nothing to do.
7367 [Andy Schneider <andy.schneider@bjss.co.uk>]
7369 *) [In 0.9.6c-engine release:]
7370 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
7371 [Andy Schneider <andy.schneider@bjss.co.uk>]
7373 *) [In 0.9.6c-engine release:]
7374 Add support for Cryptographic Appliance's keyserver technology.
7375 (Use engine 'keyclient')
7376 [Cryptographic Appliances and Geoff Thorpe]
7378 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
7379 is called via tools/c89.sh because arguments have to be
7380 rearranged (all '-L' options must appear before the first object
7382 [Richard Shapiro <rshapiro@abinitio.com>]
7384 *) [In 0.9.6c-engine release:]
7385 Add support for Broadcom crypto accelerator cards, backported
7387 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
7389 *) [In 0.9.6c-engine release:]
7390 Add support for SureWare crypto accelerator cards from
7391 Baltimore Technologies. (Use engine 'sureware')
7392 [Baltimore Technologies and Mark Cox]
7394 *) [In 0.9.6c-engine release:]
7395 Add support for crypto accelerator cards from Accelerated
7396 Encryption Processing, www.aep.ie. (Use engine 'aep')
7397 [AEP Inc. and Mark Cox]
7399 *) Add a configuration entry for gcc on UnixWare.
7400 [Gary Benson <gbenson@redhat.com>]
7402 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
7403 messages are stored in a single piece (fixed-length part and
7404 variable-length part combined) and fix various bugs found on the way.
7407 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
7408 instead. BIO_gethostbyname() does not know what timeouts are
7409 appropriate, so entries would stay in cache even when they have
7411 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
7413 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
7414 faced with a pathologically small ClientHello fragment that does
7415 not contain client_version: Instead of aborting with an error,
7416 simply choose the highest available protocol version (i.e.,
7417 TLS 1.0 unless it is disabled). In practice, ClientHello
7418 messages are never sent like this, but this change gives us
7419 strictly correct behaviour at least for TLS.
7422 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
7423 never resets s->method to s->ctx->method when called from within
7424 one of the SSL handshake functions.
7425 [Bodo Moeller; problem pointed out by Niko Baric]
7427 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
7428 (sent using the client's version number) if client_version is
7429 smaller than the protocol version in use. Also change
7430 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
7431 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
7432 the client will at least see that alert.
7435 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
7439 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
7440 client receives HelloRequest while in a handshake.
7441 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
7443 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
7444 should end in 'break', not 'goto end' which circumvents various
7445 cleanups done in state SSL_ST_OK. But session related stuff
7446 must be disabled for SSL_ST_OK in the case that we just sent a
7449 Also avoid some overhead by not calling ssl_init_wbio_buffer()
7450 before just sending a HelloRequest.
7451 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
7453 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
7454 reveal whether illegal block cipher padding was found or a MAC
7455 verification error occured. (Neither SSLerr() codes nor alerts
7456 are directly visible to potential attackers, but the information
7457 may leak via logfiles.)
7459 Similar changes are not required for the SSL 2.0 implementation
7460 because the number of padding bytes is sent in clear for SSL 2.0,
7461 and the extra bytes are just ignored. However ssl/s2_pkt.c
7462 failed to verify that the purported number of padding bytes is in
7466 *) Add OpenUNIX-8 support including shared libraries
7467 (Boyd Lynn Gerber <gerberb@zenez.com>).
7470 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
7471 'wristwatch attack' using huge encoding parameters (cf.
7472 James H. Manger's CRYPTO 2001 paper). Note that the
7473 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
7474 encoding parameters and hence was not vulnerable.
7477 *) BN_sqr() bug fix.
7478 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
7480 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
7481 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
7482 followed by modular reduction.
7483 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
7485 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
7486 equivalent based on BN_pseudo_rand() instead of BN_rand().
7489 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
7490 This function was broken, as the check for a new client hello message
7491 to handle SGC did not allow these large messages.
7492 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
7495 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
7498 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
7499 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
7502 *) Rework the configuration and shared library support for Tru64 Unix.
7503 The configuration part makes use of modern compiler features and
7504 still retains old compiler behavior for those that run older versions
7505 of the OS. The shared library support part includes a variant that
7506 uses the RPATH feature, and is available through the special
7507 configuration target "alpha-cc-rpath", which will never be selected
7509 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
7511 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
7512 with the same message size as in ssl3_get_certificate_request().
7513 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
7514 messages might inadvertently be reject as too long.
7515 [Petr Lampa <lampa@fee.vutbr.cz>]
7517 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
7520 *) Modified SSL library such that the verify_callback that has been set
7521 specificly for an SSL object with SSL_set_verify() is actually being
7522 used. Before the change, a verify_callback set with this function was
7523 ignored and the verify_callback() set in the SSL_CTX at the time of
7524 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
7525 to allow the necessary settings.
7528 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
7529 explicitly to NULL, as at least on Solaris 8 this seems not always to be
7530 done automatically (in contradiction to the requirements of the C
7531 standard). This made problems when used from OpenSSH.
7534 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
7535 dh->length and always used
7537 BN_rand_range(priv_key, dh->p).
7539 BN_rand_range() is not necessary for Diffie-Hellman, and this
7540 specific range makes Diffie-Hellman unnecessarily inefficient if
7541 dh->length (recommended exponent length) is much smaller than the
7542 length of dh->p. We could use BN_rand_range() if the order of
7543 the subgroup was stored in the DH structure, but we only have
7548 BN_rand(priv_key, l, ...)
7550 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
7556 RSA_eay_public_encrypt
7557 RSA_eay_private_decrypt
7558 RSA_eay_private_encrypt (signing)
7559 RSA_eay_public_decrypt (signature verification)
7561 (default implementations for RSA_public_encrypt,
7562 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
7563 always reject numbers >= n.
7566 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
7567 to synchronize access to 'locking_thread'. This is necessary on
7568 systems where access to 'locking_thread' (an 'unsigned long'
7569 variable) is not atomic.
7572 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
7573 *before* setting the 'crypto_lock_rand' flag. The previous code had
7574 a race condition if 0 is a valid thread ID.
7575 [Travis Vitek <vitek@roguewave.com>]
7577 *) Add support for shared libraries under Irix.
7578 [Albert Chin-A-Young <china@thewrittenword.com>]
7580 *) Add configuration option to build on Linux on both big-endian and
7582 [Ralf Baechle <ralf@uni-koblenz.de>]
7584 *) Add the possibility to create shared libraries on HP-UX.
7587 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
7589 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
7590 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
7591 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
7592 PRNG state recovery was possible based on the output of
7593 one PRNG request appropriately sized to gain knowledge on
7594 'md' followed by enough consecutive 1-byte PRNG requests
7595 to traverse all of 'state'.
7597 1. When updating 'md_local' (the current thread's copy of 'md')
7598 during PRNG output generation, hash all of the previous
7599 'md_local' value, not just the half used for PRNG output.
7601 2. Make the number of bytes from 'state' included into the hash
7602 independent from the number of PRNG bytes requested.
7604 The first measure alone would be sufficient to avoid
7605 Markku-Juhani's attack. (Actually it had never occurred
7606 to me that the half of 'md_local' used for chaining was the
7607 half from which PRNG output bytes were taken -- I had always
7608 assumed that the secret half would be used.) The second
7609 measure makes sure that additional data from 'state' is never
7610 mixed into 'md_local' in small portions; this heuristically
7611 further strengthens the PRNG.
7614 *) Fix crypto/bn/asm/mips3.s.
7617 *) When only the key is given to "enc", the IV is undefined. Print out
7618 an error message in this case.
7621 *) Handle special case when X509_NAME is empty in X509 printing routines.
7624 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
7625 positive and less than q.
7628 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
7629 used: it isn't thread safe and the add_lock_callback should handle
7631 [Paul Rose <Paul.Rose@bridge.com>]
7633 *) Verify that incoming data obeys the block size in
7634 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
7638 [Ulf Möller, Bodo Möller]
7640 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
7641 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
7642 when fixing the server behaviour for backwards-compatible 'client
7643 hello' messages. (Note that the attack is impractical against
7644 SSL 3.0 and TLS 1.0 anyway because length and version checking
7645 means that the probability of guessing a valid ciphertext is
7646 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
7649 Before 0.9.5, the countermeasure (hide the error by generating a
7650 random 'decryption result') did not work properly because
7651 ERR_clear_error() was missing, meaning that SSL_get_error() would
7652 detect the supposedly ignored error.
7654 Both problems are now fixed.
7657 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
7658 (previously it was 1024).
7661 *) Fix for compatibility mode trust settings: ignore trust settings
7662 unless some valid trust or reject settings are present.
7665 *) Fix for blowfish EVP: its a variable length cipher.
7668 *) Fix various bugs related to DSA S/MIME verification. Handle missing
7669 parameters in DSA public key structures and return an error in the
7670 DSA routines if parameters are absent.
7673 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
7674 in the current directory if neither $RANDFILE nor $HOME was set.
7675 RAND_file_name() in 0.9.6a returned NULL in this case. This has
7676 caused some confusion to Windows users who haven't defined $HOME.
7677 Thus RAND_file_name() is changed again: e_os.h can define a
7678 DEFAULT_HOME, which will be used if $HOME is not set.
7679 For Windows, we use "C:"; on other platforms, we still require
7680 environment variables.
7682 *) Move 'if (!initialized) RAND_poll()' into regions protected by
7683 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
7684 having multiple threads call RAND_poll() concurrently.
7687 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
7688 combination of a flag and a thread ID variable.
7689 Otherwise while one thread is in ssleay_rand_bytes (which sets the
7690 flag), *other* threads can enter ssleay_add_bytes without obeying
7691 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
7692 that they do not hold after the first thread unsets add_do_not_lock).
7695 *) Change bctest again: '-x' expressions are not available in all
7699 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
7701 *) Fix a couple of memory leaks in PKCS7_dataDecode()
7702 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
7704 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
7705 the default extension for executables, if any. Also, make the perl
7706 scripts that use symlink() to test if it really exists and use "cp"
7707 if it doesn't. All this made OpenSSL compilable and installable in
7711 *) Fix for asn1_GetSequence() for indefinite length constructed data.
7712 If SEQUENCE is length is indefinite just set c->slen to the total
7713 amount of data available.
7714 [Steve Henson, reported by shige@FreeBSD.org]
7715 [This change does not apply to 0.9.7.]
7717 *) Change bctest to avoid here-documents inside command substitution
7718 (workaround for FreeBSD /bin/sh bug).
7719 For compatibility with Ultrix, avoid shell functions (introduced
7720 in the bctest version that searches along $PATH).
7723 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
7724 with des_encrypt() defined on some operating systems, like Solaris
7728 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
7729 On the Importance of Eliminating Errors in Cryptographic
7730 Computations, J. Cryptology 14 (2001) 2, 101-119,
7731 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
7734 *) MIPS assembler BIGNUM division bug fix.
7737 *) Disabled incorrect Alpha assembler code.
7740 *) Fix PKCS#7 decode routines so they correctly update the length
7741 after reading an EOC for the EXPLICIT tag.
7743 [This change does not apply to 0.9.7.]
7745 *) Fix bug in PKCS#12 key generation routines. This was triggered
7746 if a 3DES key was generated with a 0 initial byte. Include
7747 PKCS12_BROKEN_KEYGEN compilation option to retain the old
7748 (but broken) behaviour.
7751 *) Enhance bctest to search for a working bc along $PATH and print
7753 [Tim Rice <tim@multitalents.net> via Richard Levitte]
7755 *) Fix memory leaks in err.c: free err_data string if necessary;
7756 don't write to the wrong index in ERR_set_error_data.
7759 *) Implement ssl23_peek (analogous to ssl23_read), which previously
7763 *) Replace rdtsc with _emit statements for VC++ version 5.
7764 [Jeremy Cooper <jeremy@baymoo.org>]
7766 *) Make it possible to reuse SSLv2 sessions.
7769 *) In copy_email() check for >= 0 as a return value for
7770 X509_NAME_get_index_by_NID() since 0 is a valid index.
7771 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
7773 *) Avoid coredump with unsupported or invalid public keys by checking if
7774 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
7775 PKCS7_verify() fails with non detached data.
7778 *) Don't use getenv in library functions when run as setuid/setgid.
7779 New function OPENSSL_issetugid().
7782 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
7783 due to incorrect handling of multi-threading:
7785 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
7787 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
7789 3. Count how many times MemCheck_off() has been called so that
7790 nested use can be treated correctly. This also avoids
7791 inband-signalling in the previous code (which relied on the
7792 assumption that thread ID 0 is impossible).
7795 *) Add "-rand" option also to s_client and s_server.
7798 *) Fix CPU detection on Irix 6.x.
7799 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
7800 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
7802 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
7805 [This change does not apply to 0.9.7.]
7807 *) Use the cached encoding of an X509_NAME structure rather than
7808 copying it. This is apparently the reason for the libsafe "errors"
7809 but the code is actually correct.
7812 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
7813 Bleichenbacher's DSA attack.
7814 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
7815 to be set and top=0 forces the highest bit to be set; top=-1 is new
7816 and leaves the highest bit random.
7817 [Ulf Moeller, Bodo Moeller]
7819 *) In the NCONF_...-based implementations for CONF_... queries
7820 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
7821 a temporary CONF structure with the data component set to NULL
7822 (which gives segmentation faults in lh_retrieve).
7823 Instead, use NULL for the CONF pointer in CONF_get_string and
7824 CONF_get_number (which may use environment variables) and directly
7825 return NULL from CONF_get_section.
7828 *) Fix potential buffer overrun for EBCDIC.
7831 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
7832 keyUsage if basicConstraints absent for a CA.
7835 *) Make SMIME_write_PKCS7() write mail header values with a format that
7836 is more generally accepted (no spaces before the semicolon), since
7837 some programs can't parse those values properly otherwise. Also make
7838 sure BIO's that break lines after each write do not create invalid
7842 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
7843 macros previously used would not encode an empty SEQUENCE OF
7844 and break the signature.
7846 [This change does not apply to 0.9.7.]
7848 *) Zero the premaster secret after deriving the master secret in
7852 *) Add some EVP_add_digest_alias registrations (as found in
7853 OpenSSL_add_all_digests()) to SSL_library_init()
7854 aka OpenSSL_add_ssl_algorithms(). This provides improved
7855 compatibility with peers using X.509 certificates
7856 with unconventional AlgorithmIdentifier OIDs.
7859 *) Fix for Irix with NO_ASM.
7860 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
7862 *) ./config script fixes.
7863 [Ulf Moeller, Richard Levitte]
7865 *) Fix 'openssl passwd -1'.
7868 *) Change PKCS12_key_gen_asc() so it can cope with non null
7869 terminated strings whose length is passed in the passlen
7870 parameter, for example from PEM callbacks. This was done
7871 by adding an extra length parameter to asc2uni().
7872 [Steve Henson, reported by <oddissey@samsung.co.kr>]
7874 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
7875 call failed, free the DSA structure.
7878 *) Fix to uni2asc() to cope with zero length Unicode strings.
7879 These are present in some PKCS#12 files.
7882 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
7883 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
7884 when writing a 32767 byte record.
7885 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
7887 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
7888 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
7890 (RSA objects have a reference count access to which is protected
7891 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
7892 so they are meant to be shared between threads.)
7893 [Bodo Moeller, Geoff Thorpe; original patch submitted by
7894 "Reddie, Steven" <Steven.Reddie@ca.com>]
7896 *) Fix a deadlock in CRYPTO_mem_leaks().
7899 *) Use better test patterns in bntest.
7902 *) rand_win.c fix for Borland C.
7905 *) BN_rshift bugfix for n == 0.
7908 *) Add a 'bctest' script that checks for some known 'bc' bugs
7909 so that 'make test' does not abort just because 'bc' is broken.
7912 *) Store verify_result within SSL_SESSION also for client side to
7913 avoid potential security hole. (Re-used sessions on the client side
7914 always resulted in verify_result==X509_V_OK, not using the original
7915 result of the server certificate verification.)
7918 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
7919 SSL3_RT_APPLICATION_DATA, return 0.
7920 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
7924 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
7925 releases, have been re-implemented by renaming the previous
7926 implementations of ssl2_read and ssl3_read to ssl2_read_internal
7927 and ssl3_read_internal, respectively, and adding 'peek' parameters
7928 to them. The new ssl[23]_{read,peek} functions are calls to
7929 ssl[23]_read_internal with the 'peek' flag set appropriately.
7930 A 'peek' parameter has also been added to ssl3_read_bytes, which
7931 does the actual work for ssl3_read_internal.
7934 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
7935 the method-specific "init()" handler. Also clean up ex_data after
7936 calling the method-specific "finish()" handler. Previously, this was
7937 happening the other way round.
7940 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
7941 The previous value, 12, was not always sufficient for BN_mod_exp().
7944 *) Make sure that shared libraries get the internal name engine with
7945 the full version number and not just 0. This should mark the
7946 shared libraries as not backward compatible. Of course, this should
7947 be changed again when we can guarantee backward binary compatibility.
7950 *) Fix typo in get_cert_by_subject() in by_dir.c
7951 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
7953 *) Rework the system to generate shared libraries:
7955 - Make note of the expected extension for the shared libraries and
7956 if there is a need for symbolic links from for example libcrypto.so.0
7957 to libcrypto.so.0.9.7. There is extended info in Configure for
7960 - Make as few rebuilds of the shared libraries as possible.
7962 - Still avoid linking the OpenSSL programs with the shared libraries.
7964 - When installing, install the shared libraries separately from the
7968 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
7970 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
7971 and not in SSL_clear because the latter is also used by the
7972 accept/connect functions; previously, the settings made by
7973 SSL_set_read_ahead would be lost during the handshake.
7974 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
7976 *) Correct util/mkdef.pl to be selective about disabled algorithms.
7977 Previously, it would create entries for disabled algorithms no
7981 *) Added several new manual pages for SSL_* function.
7984 Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
7986 *) In ssl23_get_client_hello, generate an error message when faced
7987 with an initial SSL 3.0/TLS record that is too small to contain the
7988 first two bytes of the ClientHello message, i.e. client_version.
7989 (Note that this is a pathologic case that probably has never happened
7990 in real life.) The previous approach was to use the version number
7991 from the record header as a substitute; but our protocol choice
7992 should not depend on that one because it is not authenticated
7993 by the Finished messages.
7996 *) More robust randomness gathering functions for Windows.
7997 [Jeffrey Altman <jaltman@columbia.edu>]
7999 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
8000 not set then we don't setup the error code for issuer check errors
8001 to avoid possibly overwriting other errors which the callback does
8002 handle. If an application does set the flag then we assume it knows
8003 what it is doing and can handle the new informational codes
8007 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
8008 a general "ANY" type, as such it should be able to decode anything
8009 including tagged types. However it didn't check the class so it would
8010 wrongly interpret tagged types in the same way as their universal
8011 counterpart and unknown types were just rejected. Changed so that the
8012 tagged and unknown types are handled in the same way as a SEQUENCE:
8013 that is the encoding is stored intact. There is also a new type
8014 "V_ASN1_OTHER" which is used when the class is not universal, in this
8015 case we have no idea what the actual type is so we just lump them all
8019 *) On VMS, stdout may very well lead to a file that is written to
8020 in a record-oriented fashion. That means that every write() will
8021 write a separate record, which will be read separately by the
8022 programs trying to read from it. This can be very confusing.
8024 The solution is to put a BIO filter in the way that will buffer
8025 text until a linefeed is reached, and then write everything a
8026 line at a time, so every record written will be an actual line,
8027 not chunks of lines and not (usually doesn't happen, but I've
8028 seen it once) several lines in one record. BIO_f_linebuffer() is
8031 Currently, it's a VMS-only method, because that's where it has
8032 been tested well enough.
8035 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
8036 it can return incorrect results.
8037 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
8038 but it was in 0.9.6-beta[12].)
8041 *) Disable the check for content being present when verifying detached
8042 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
8043 include zero length content when signing messages.
8046 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
8047 BIO_ctrl (for BIO pairs).
8050 *) Add DSO method for VMS.
8053 *) Bug fix: Montgomery multiplication could produce results with the
8057 *) Add RPM specification openssl.spec and modify it to build three
8058 packages. The default package contains applications, application
8059 documentation and run-time libraries. The devel package contains
8060 include files, static libraries and function documentation. The
8061 doc package contains the contents of the doc directory. The original
8062 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
8065 *) Add a large number of documentation files for many SSL routines.
8066 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
8068 *) Add a configuration entry for Sony News 4.
8069 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
8071 *) Don't set the two most significant bits to one when generating a
8072 random number < q in the DSA library.
8075 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
8076 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
8077 the underlying transport is blocking) if a handshake took place.
8078 (The default behaviour is needed by applications such as s_client
8079 and s_server that use select() to determine when to use SSL_read;
8080 but for applications that know in advance when to expect data, it
8081 just makes things more complicated.)
8084 *) Add RAND_egd_bytes(), which gives control over the number of bytes read
8088 *) Add a few more EBCDIC conditionals that make `req' and `x509'
8089 work better on such systems.
8090 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
8092 *) Add two demo programs for PKCS12_parse() and PKCS12_create().
8093 Update PKCS12_parse() so it copies the friendlyName and the
8094 keyid to the certificates aux info.
8097 *) Fix bug in PKCS7_verify() which caused an infinite loop
8098 if there was more than one signature.
8099 [Sven Uszpelkat <su@celocom.de>]
8101 *) Major change in util/mkdef.pl to include extra information
8102 about each symbol, as well as presenting variables as well
8103 as functions. This change means that there's n more need
8104 to rebuild the .num files when some algorithms are excluded.
8107 *) Allow the verify time to be set by an application,
8108 rather than always using the current time.
8111 *) Phase 2 verify code reorganisation. The certificate
8112 verify code now looks up an issuer certificate by a
8113 number of criteria: subject name, authority key id
8114 and key usage. It also verifies self signed certificates
8115 by the same criteria. The main comparison function is
8116 X509_check_issued() which performs these checks.
8118 Lot of changes were necessary in order to support this
8119 without completely rewriting the lookup code.
8121 Authority and subject key identifier are now cached.
8123 The LHASH 'certs' is X509_STORE has now been replaced
8124 by a STACK_OF(X509_OBJECT). This is mainly because an
8125 LHASH can't store or retrieve multiple objects with
8126 the same hash value.
8128 As a result various functions (which were all internal
8129 use only) have changed to handle the new X509_STORE
8130 structure. This will break anything that messed round
8131 with X509_STORE internally.
8133 The functions X509_STORE_add_cert() now checks for an
8134 exact match, rather than just subject name.
8136 The X509_STORE API doesn't directly support the retrieval
8137 of multiple certificates matching a given criteria, however
8138 this can be worked round by performing a lookup first
8139 (which will fill the cache with candidate certificates)
8140 and then examining the cache for matches. This is probably
8141 the best we can do without throwing out X509_LOOKUP
8142 entirely (maybe later...).
8144 The X509_VERIFY_CTX structure has been enhanced considerably.
8146 All certificate lookup operations now go via a get_issuer()
8147 callback. Although this currently uses an X509_STORE it
8148 can be replaced by custom lookups. This is a simple way
8149 to bypass the X509_STORE hackery necessary to make this
8150 work and makes it possible to use more efficient techniques
8151 in future. A very simple version which uses a simple
8152 STACK for its trusted certificate store is also provided
8153 using X509_STORE_CTX_trusted_stack().
8155 The verify_cb() and verify() callbacks now have equivalents
8156 in the X509_STORE_CTX structure.
8158 X509_STORE_CTX also has a 'flags' field which can be used
8159 to customise the verify behaviour.
8162 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
8163 excludes S/MIME capabilities.
8166 *) When a certificate request is read in keep a copy of the
8167 original encoding of the signed data and use it when outputing
8168 again. Signatures then use the original encoding rather than
8169 a decoded, encoded version which may cause problems if the
8170 request is improperly encoded.
8173 *) For consistency with other BIO_puts implementations, call
8174 buffer_write(b, ...) directly in buffer_puts instead of calling
8177 In BIO_puts, increment b->num_write as in BIO_write.
8178 [Peter.Sylvester@EdelWeb.fr]
8180 *) Fix BN_mul_word for the case where the word is 0. (We have to use
8181 BN_zero, we may not return a BIGNUM with an array consisting of
8185 *) Avoid calling abort() from within the library when problems are
8186 detected, except if preprocessor symbols have been defined
8187 (such as REF_CHECK, BN_DEBUG etc.).
8190 *) New openssl application 'rsautl'. This utility can be
8191 used for low level RSA operations. DER public key
8192 BIO/fp routines also added.
8195 *) New Configure entry and patches for compiling on QNX 4.
8196 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
8198 *) A demo state-machine implementation was sponsored by
8199 Nuron (http://www.nuron.com/) and is now available in
8200 demos/state_machine.
8203 *) New options added to the 'dgst' utility for signature
8204 generation and verification.
8207 *) Unrecognized PKCS#7 content types are now handled via a
8208 catch all ASN1_TYPE structure. This allows unsupported
8209 types to be stored as a "blob" and an application can
8210 encode and decode it manually.
8213 *) Fix various signed/unsigned issues to make a_strex.c
8215 [Oscar Jacobsson <oscar.jacobsson@celocom.com>]
8217 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
8218 length if passed a buffer. ASN1_INTEGER_to_BN failed
8219 if passed a NULL BN and its argument was negative.
8220 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
8222 *) Modification to PKCS#7 encoding routines to output definite
8223 length encoding. Since currently the whole structures are in
8224 memory there's not real point in using indefinite length
8225 constructed encoding. However if OpenSSL is compiled with
8226 the flag PKCS7_INDEFINITE_ENCODING the old form is used.
8229 *) Added BIO_vprintf() and BIO_vsnprintf().
8232 *) Added more prefixes to parse for in the the strings written
8233 through a logging bio, to cover all the levels that are available
8234 through syslog. The prefixes are now:
8236 PANIC, EMERG, EMR => LOG_EMERG
8237 ALERT, ALR => LOG_ALERT
8238 CRIT, CRI => LOG_CRIT
8239 ERROR, ERR => LOG_ERR
8240 WARNING, WARN, WAR => LOG_WARNING
8241 NOTICE, NOTE, NOT => LOG_NOTICE
8242 INFO, INF => LOG_INFO
8243 DEBUG, DBG => LOG_DEBUG
8245 and as before, if none of those prefixes are present at the
8246 beginning of the string, LOG_ERR is chosen.
8248 On Win32, the LOG_* levels are mapped according to this:
8250 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
8251 LOG_WARNING => EVENTLOG_WARNING_TYPE
8252 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
8256 *) Made it possible to reconfigure with just the configuration
8257 argument "reconf" or "reconfigure". The command line arguments
8258 are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
8259 and are retrieved from there when reconfiguring.
8263 [Assar Westerlund <assar@sics.se>, Richard Levitte]
8265 *) Add the arguments -CAfile and -CApath to the pkcs12 utility.
8268 *) The obj_dat.pl script was messing up the sorting of object
8269 names. The reason was that it compared the quoted version
8270 of strings as a result "OCSP" > "OCSP Signing" because
8271 " > SPACE. Changed script to store unquoted versions of
8272 names and add quotes on output. It was also omitting some
8273 names from the lookup table if they were given a default
8274 value (that is if SN is missing it is given the same
8275 value as LN and vice versa), these are now added on the
8276 grounds that if an object has a name we should be able to
8277 look it up. Finally added warning output when duplicate
8278 short or long names are found.
8281 *) Changes needed for Tandem NSK.
8282 [Scott Uroff <scott@xypro.com>]
8284 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
8285 RSA_padding_check_SSLv23(), special padding was never detected
8286 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
8287 version rollback attacks was not effective.
8289 In s23_clnt.c, don't use special rollback-attack detection padding
8290 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
8291 client; similarly, in s23_srvr.c, don't do the rollback check if
8292 SSL 2.0 is the only protocol enabled in the server.
8295 *) Make it possible to get hexdumps of unprintable data with 'openssl
8296 asn1parse'. By implication, the functions ASN1_parse_dump() and
8297 BIO_dump_indent() are added.
8300 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
8301 these print out strings and name structures based on various
8302 flags including RFC2253 support and proper handling of
8303 multibyte characters. Added options to the 'x509' utility
8304 to allow the various flags to be set.
8307 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
8308 Also change the functions X509_cmp_current_time() and
8309 X509_gmtime_adj() work with an ASN1_TIME structure,
8310 this will enable certificates using GeneralizedTime in validity
8311 dates to be checked.
8314 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid
8315 negative public key encodings) on by default,
8316 NO_NEG_PUBKEY_BUG can be set to disable it.
8319 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
8320 content octets. An i2c_ASN1_OBJECT is unnecessary because
8321 the encoding can be trivially obtained from the structure.
8324 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
8325 not read locks (CRYPTO_r_[un]lock).
8328 *) A first attempt at creating official support for shared
8329 libraries through configuration. I've kept it so the
8330 default is static libraries only, and the OpenSSL programs
8331 are always statically linked for now, but there are
8332 preparations for dynamic linking in place.
8333 This has been tested on Linux and Tru64.
8336 *) Randomness polling function for Win9x, as described in:
8337 Peter Gutmann, Software Generation of Practically Strong
8341 *) Fix so PRNG is seeded in req if using an already existing
8345 *) New options to smime application. -inform and -outform
8346 allow alternative formats for the S/MIME message including
8347 PEM and DER. The -content option allows the content to be
8348 specified separately. This should allow things like Netscape
8349 form signing output easier to verify.
8352 *) Fix the ASN1 encoding of tags using the 'long form'.
8355 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
8356 STRING types. These convert content octets to and from the
8357 underlying type. The actual tag and length octets are
8358 already assumed to have been read in and checked. These
8359 are needed because all other string types have virtually
8360 identical handling apart from the tag. By having versions
8361 of the ASN1 functions that just operate on content octets
8362 IMPLICIT tagging can be handled properly. It also allows
8363 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
8364 and ASN1_INTEGER are identical apart from the tag.
8367 *) Change the handling of OID objects as follows:
8369 - New object identifiers are inserted in objects.txt, following
8370 the syntax given in objects.README.
8371 - objects.pl is used to process obj_mac.num and create a new
8373 - obj_dat.pl is used to create a new obj_dat.h, using the data in
8376 This is currently kind of a hack, and the perl code in objects.pl
8377 isn't very elegant, but it works as I intended. The simplest way
8378 to check that it worked correctly is to look in obj_dat.h and
8379 check the array nid_objs and make sure the objects haven't moved
8380 around (this is important!). Additions are OK, as well as
8381 consistent name changes.
8384 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
8387 *) Addition of the command line parameter '-rand file' to 'openssl req'.
8388 The given file adds to whatever has already been seeded into the
8389 random pool through the RANDFILE configuration file option or
8390 environment variable, or the default random state file.
8393 *) mkstack.pl now sorts each macro group into lexical order.
8394 Previously the output order depended on the order the files
8395 appeared in the directory, resulting in needless rewriting
8399 *) Patches to make OpenSSL compile under Win32 again. Mostly
8400 work arounds for the VC++ problem that it treats func() as
8401 func(void). Also stripped out the parts of mkdef.pl that
8402 added extra typesafe functions: these no longer exist.
8405 *) Reorganisation of the stack code. The macros are now all
8406 collected in safestack.h . Each macro is defined in terms of
8407 a "stack macro" of the form SKM_<name>(type, a, b). The
8408 DEBUG_SAFESTACK is now handled in terms of function casts,
8409 this has the advantage of retaining type safety without the
8410 use of additional functions. If DEBUG_SAFESTACK is not defined
8411 then the non typesafe macros are used instead. Also modified the
8412 mkstack.pl script to handle the new form. Needs testing to see
8413 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
8414 the default if no major problems. Similar behaviour for ASN1_SET_OF
8415 and PKCS12_STACK_OF.
8418 *) When some versions of IIS use the 'NET' form of private key the
8419 key derivation algorithm is different. Normally MD5(password) is
8420 used as a 128 bit RC4 key. In the modified case
8421 MD5(MD5(password) + "SGCKEYSALT") is used instead. Added some
8422 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
8423 as the old Netscape_RSA functions except they have an additional
8424 'sgckey' parameter which uses the modified algorithm. Also added
8425 an -sgckey command line option to the rsa utility. Thanks to
8426 Adrian Peck <bertie@ncipher.com> for posting details of the modified
8427 algorithm to openssl-dev.
8430 *) The evp_local.h macros were using 'c.##kname' which resulted in
8431 invalid expansion on some systems (SCO 5.0.5 for example).
8432 Corrected to 'c.kname'.
8433 [Phillip Porch <root@theporch.com>]
8435 *) New X509_get1_email() and X509_REQ_get1_email() functions that return
8436 a STACK of email addresses from a certificate or request, these look
8437 in the subject name and the subject alternative name extensions and
8438 omit any duplicate addresses.
8441 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows.
8442 This makes DSA verification about 2 % faster.
8445 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
8446 (meaning that now 2^5 values will be precomputed, which is only 4 KB
8447 plus overhead for 1024 bit moduli).
8448 This makes exponentiations about 0.5 % faster for 1024 bit
8449 exponents (as measured by "openssl speed rsa2048").
8452 *) Rename memory handling macros to avoid conflicts with other
8454 Malloc => OPENSSL_malloc
8455 Malloc_locked => OPENSSL_malloc_locked
8456 Realloc => OPENSSL_realloc
8457 Free => OPENSSL_free
8460 *) New function BN_mod_exp_mont_word for small bases (roughly 15%
8461 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
8464 *) CygWin32 support.
8465 [John Jarvie <jjarvie@newsguy.com>]
8467 *) The type-safe stack code has been rejigged. It is now only compiled
8468 in when OpenSSL is configured with the DEBUG_SAFESTACK option and
8469 by default all type-specific stack functions are "#define"d back to
8470 standard stack functions. This results in more streamlined output
8471 but retains the type-safety checking possibilities of the original
8475 *) The STACK code has been cleaned up, and certain type declarations
8476 that didn't make a lot of sense have been brought in line. This has
8477 also involved a cleanup of sorts in safestack.h to more correctly
8478 map type-safe stack functions onto their plain stack counterparts.
8479 This work has also resulted in a variety of "const"ifications of
8480 lots of the code, especially "_cmp" operations which should normally
8481 be prototyped with "const" parameters anyway.
8484 *) When generating bytes for the first time in md_rand.c, 'stir the pool'
8485 by seeding with STATE_SIZE dummy bytes (with zero entropy count).
8486 (The PRNG state consists of two parts, the large pool 'state' and 'md',
8487 where all of 'md' is used each time the PRNG is used, but 'state'
8488 is used only indexed by a cyclic counter. As entropy may not be
8489 well distributed from the beginning, 'md' is important as a
8490 chaining variable. However, the output function chains only half
8491 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
8492 all of 'md', and seeding with STATE_SIZE dummy bytes will result
8493 in all of 'state' being rewritten, with the new values depending
8494 on virtually all of 'md'. This overcomes the 80 bit limitation.)
8497 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
8498 the handshake is continued after ssl_verify_cert_chain();
8499 otherwise, if SSL_VERIFY_NONE is set, remaining error codes
8500 can lead to 'unexplainable' connection aborts later.
8501 [Bodo Moeller; problem tracked down by Lutz Jaenicke]
8503 *) Major EVP API cipher revision.
8504 Add hooks for extra EVP features. This allows various cipher
8505 parameters to be set in the EVP interface. Support added for variable
8506 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
8507 setting of RC2 and RC5 parameters.
8509 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
8512 Remove lots of duplicated code from the EVP library. For example *every*
8513 cipher init() function handles the 'iv' in the same way according to the
8514 cipher mode. They also all do nothing if the 'key' parameter is NULL and
8515 for CFB and OFB modes they zero ctx->num.
8517 New functionality allows removal of S/MIME code RC2 hack.
8519 Most of the routines have the same form and so can be declared in terms
8522 By shifting this to the top level EVP_CipherInit() it can be removed from
8523 all individual ciphers. If the cipher wants to handle IVs or keys
8524 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
8527 Change lots of functions like EVP_EncryptUpdate() to now return a
8528 value: although software versions of the algorithms cannot fail
8529 any installed hardware versions can.
8532 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
8533 this option is set, tolerate broken clients that send the negotiated
8534 protocol version number instead of the requested protocol version
8538 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag;
8539 i.e. non-zero for export ciphersuites, zero otherwise.
8540 Previous versions had this flag inverted, inconsistent with
8541 rsa_tmp_cb (..._TMP_RSA_CB).
8542 [Bodo Moeller; problem reported by Amit Chopra]
8544 *) Add missing DSA library text string. Work around for some IIS
8545 key files with invalid SEQUENCE encoding.
8548 *) Add a document (doc/standards.txt) that list all kinds of standards
8549 and so on that are implemented in OpenSSL.
8552 *) Enhance c_rehash script. Old version would mishandle certificates
8553 with the same subject name hash and wouldn't handle CRLs at all.
8554 Added -fingerprint option to crl utility, to support new c_rehash
8558 *) Eliminate non-ANSI declarations in crypto.h and stack.h.
8561 *) Fix for SSL server purpose checking. Server checking was
8562 rejecting certificates which had extended key usage present
8563 but no ssl client purpose.
8564 [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>]
8566 *) Make PKCS#12 code work with no password. The PKCS#12 spec
8567 is a little unclear about how a blank password is handled.
8568 Since the password in encoded as a BMPString with terminating
8569 double NULL a zero length password would end up as just the
8570 double NULL. However no password at all is different and is
8571 handled differently in the PKCS#12 key generation code. NS
8572 treats a blank password as zero length. MSIE treats it as no
8573 password on export: but it will try both on import. We now do
8574 the same: PKCS12_parse() tries zero length and no password if
8575 the password is set to "" or NULL (NULL is now a valid password:
8576 it wasn't before) as does the pkcs12 application.
8579 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
8580 perror when PEM_read_bio_X509_REQ fails, the error message must
8581 be obtained from the error queue.
8584 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
8585 it in ERR_remove_state if appropriate, and change ERR_get_state
8586 accordingly to avoid race conditions (this is necessary because
8587 thread_hash is no longer constant once set).
8590 *) Bugfix for linux-elf makefile.one.
8593 *) RSA_get_default_method() will now cause a default
8594 RSA_METHOD to be chosen if one doesn't exist already.
8595 Previously this was only set during a call to RSA_new()
8596 or RSA_new_method(NULL) meaning it was possible for
8597 RSA_get_default_method() to return NULL.
8600 *) Added native name translation to the existing DSO code
8601 that will convert (if the flag to do so is set) filenames
8602 that are sufficiently small and have no path information
8603 into a canonical native form. Eg. "blah" converted to
8604 "libblah.so" or "blah.dll" etc.
8607 *) New function ERR_error_string_n(e, buf, len) which is like
8608 ERR_error_string(e, buf), but writes at most 'len' bytes
8609 including the 0 terminator. For ERR_error_string_n, 'buf'
8611 [Damien Miller <djm@mindrot.org>, Bodo Moeller]
8613 *) CONF library reworked to become more general. A new CONF
8614 configuration file reader "class" is implemented as well as a
8615 new functions (NCONF_*, for "New CONF") to handle it. The now
8616 old CONF_* functions are still there, but are reimplemented to
8617 work in terms of the new functions. Also, a set of functions
8618 to handle the internal storage of the configuration data is
8619 provided to make it easier to write new configuration file
8620 reader "classes" (I can definitely see something reading a
8621 configuration file in XML format, for example), called _CONF_*,
8622 or "the configuration storage API"...
8624 The new configuration file reading functions are:
8626 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
8627 NCONF_get_section, NCONF_get_string, NCONF_get_numbre
8629 NCONF_default, NCONF_WIN32
8631 NCONF_dump_fp, NCONF_dump_bio
8633 NCONF_default and NCONF_WIN32 are method (or "class") choosers,
8634 NCONF_new creates a new CONF object. This works in the same way
8635 as other interfaces in OpenSSL, like the BIO interface.
8636 NCONF_dump_* dump the internal storage of the configuration file,
8637 which is useful for debugging. All other functions take the same
8638 arguments as the old CONF_* functions wth the exception of the
8639 first that must be a `CONF *' instead of a `LHASH *'.
8641 To make it easer to use the new classes with the old CONF_* functions,
8642 the function CONF_set_default_method is provided.
8645 *) Add '-tls1' option to 'openssl ciphers', which was already
8646 mentioned in the documentation but had not been implemented.
8647 (This option is not yet really useful because even the additional
8648 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
8651 *) Initial DSO code added into libcrypto for letting OpenSSL (and
8652 OpenSSL-based applications) load shared libraries and bind to
8653 them in a portable way.
8654 [Geoff Thorpe, with contributions from Richard Levitte]
8656 Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
8658 *) Make sure _lrotl and _lrotr are only used with MSVC.
8660 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
8661 (the default implementation of RAND_status).
8663 *) Rename openssl x509 option '-crlext', which was added in 0.9.5,
8664 to '-clrext' (= clear extensions), as intended and documented.
8665 [Bodo Moeller; inconsistency pointed out by Michael Attili
8668 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length
8669 was larger than the MD block size.
8670 [Steve Henson, pointed out by Yost William <YostW@tce.com>]
8672 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
8673 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
8674 using the passed key: if the passed key was a private key the result
8675 of X509_print(), for example, would be to print out all the private key
8679 *) des_quad_cksum() byte order bug fix.
8680 [Ulf Möller, using the problem description in krb4-0.9.7, where
8681 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>]
8683 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
8685 [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>]
8687 *) For easily testing in shell scripts whether some command
8688 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
8689 returns with exit code 0 iff no command of the given name is available.
8690 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
8691 the output goes to stdout and nothing is printed to stderr.
8692 Additional arguments are always ignored.
8694 Since for each cipher there is a command of the same name,
8695 the 'no-cipher' compilation switches can be tested this way.
8697 ('openssl no-XXX' is not able to detect pseudo-commands such
8698 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
8701 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
8704 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
8705 is set; it will be thrown away anyway because each handshake creates
8707 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
8708 to parameters -- in previous versions (since OpenSSL 0.9.3) the
8709 'default key' from SSL_CTX_set_tmp_dh would always be lost, meaning
8710 you effectivly got SSL_OP_SINGLE_DH_USE when using this macro.
8713 *) New s_client option -ign_eof: EOF at stdin is ignored, and
8714 'Q' and 'R' lose their special meanings (quit/renegotiate).
8715 This is part of what -quiet does; unlike -quiet, -ign_eof
8716 does not suppress any output.
8719 *) Add compatibility options to the purpose and trust code. The
8720 purpose X509_PURPOSE_ANY is "any purpose" which automatically
8721 accepts a certificate or CA, this was the previous behaviour,
8722 with all the associated security issues.
8724 X509_TRUST_COMPAT is the old trust behaviour: only and
8725 automatically trust self signed roots in certificate store. A
8726 new trust setting X509_TRUST_DEFAULT is used to specify that
8727 a purpose has no associated trust setting and it should instead
8728 use the value in the default purpose.
8731 *) Fix the PKCS#8 DSA private key code so it decodes keys again
8732 and fix a memory leak.
8735 *) In util/mkerr.pl (which implements 'make errors'), preserve
8736 reason strings from the previous version of the .c file, as
8737 the default to have only downcase letters (and digits) in
8738 automatically generated reasons codes is not always appropriate.
8741 *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
8742 using strerror. Previously, ERR_reason_error_string() returned
8743 library names as reason strings for SYSerr; but SYSerr is a special
8744 case where small numbers are errno values, not library numbers.
8747 *) Add '-dsaparam' option to 'openssl dhparam' application. This
8748 converts DSA parameters into DH parameters. (When creating parameters,
8749 DSA_generate_parameters is used.)
8752 *) Include 'length' (recommended exponent length) in C code generated
8753 by 'openssl dhparam -C'.
8756 *) The second argument to set_label in perlasm was already being used
8757 so couldn't be used as a "file scope" flag. Moved to third argument
8761 *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
8762 instead of RAND_bytes for encryption IVs and salts.
8765 *) Include RAND_status() into RAND_METHOD instead of implementing
8766 it only for md_rand.c Otherwise replacing the PRNG by calling
8767 RAND_set_rand_method would be impossible.
8770 *) Don't let DSA_generate_key() enter an infinite loop if the random
8771 number generation fails.
8774 *) New 'rand' application for creating pseudo-random output.
8777 *) Added configuration support for Linux/IA64
8778 [Rolf Haberrecker <rolf@suse.de>]
8780 *) Assembler module support for Mingw32.
8783 *) Shared library support for HPUX (in shlib/).
8784 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous]
8786 *) Shared library support for Solaris gcc.
8787 [Lutz Behnke <behnke@trustcenter.de>]
8789 Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
8791 *) PKCS7_encrypt() was adding text MIME headers twice because they
8792 were added manually and by SMIME_crlf_copy().
8795 *) In bntest.c don't call BN_rand with zero bits argument.
8796 [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>]
8798 *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
8799 case was implemented. This caused BN_div_recp() to fail occasionally.
8802 *) Add an optional second argument to the set_label() in the perl
8803 assembly language builder. If this argument exists and is set
8804 to 1 it signals that the assembler should use a symbol whose
8805 scope is the entire file, not just the current function. This
8806 is needed with MASM which uses the format label:: for this scope.
8807 [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>]
8809 *) Change the ASN1 types so they are typedefs by default. Before
8810 almost all types were #define'd to ASN1_STRING which was causing
8811 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
8815 *) Change names of new functions to the new get1/get0 naming
8816 convention: After 'get1', the caller owns a reference count
8817 and has to call ..._free; 'get0' returns a pointer to some
8818 data structure without incrementing reference counters.
8819 (Some of the existing 'get' functions increment a reference
8820 counter, some don't.)
8821 Similarly, 'set1' and 'add1' functions increase reference
8822 counters or duplicate objects.
8825 *) Allow for the possibility of temp RSA key generation failure:
8826 the code used to assume it always worked and crashed on failure.
8829 *) Fix potential buffer overrun problem in BIO_printf().
8830 [Ulf Möller, using public domain code by Patrick Powell; problem
8831 pointed out by David Sacerdote <das33@cornell.edu>]
8833 *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions
8834 RAND_egd() and RAND_status(). In the command line application,
8835 the EGD socket can be specified like a seed file using RANDFILE
8839 *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
8840 Some CAs (e.g. Verisign) distribute certificates in this form.
8843 *) Remove the SSL_ALLOW_ADH compile option and set the default cipher
8844 list to exclude them. This means that no special compilation option
8845 is needed to use anonymous DH: it just needs to be included in the
8849 *) Change the EVP_MD_CTX_type macro so its meaning consistent with
8850 EVP_MD_type. The old functionality is available in a new macro called
8851 EVP_MD_md(). Change code that uses it and update docs.
8854 *) ..._ctrl functions now have corresponding ..._callback_ctrl functions
8855 where the 'void *' argument is replaced by a function pointer argument.
8856 Previously 'void *' was abused to point to functions, which works on
8857 many platforms, but is not correct. As these functions are usually
8858 called by macros defined in OpenSSL header files, most source code
8859 should work without changes.
8862 *) <openssl/opensslconf.h> (which is created by Configure) now contains
8863 sections with information on -D... compiler switches used for
8864 compiling the library so that applications can see them. To enable
8865 one of these sections, a pre-processor symbol OPENSSL_..._DEFINES
8866 must be defined. E.g.,
8867 #define OPENSSL_ALGORITHM_DEFINES
8868 #include <openssl/opensslconf.h>
8869 defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc.
8870 [Richard Levitte, Ulf and Bodo Möller]
8872 *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
8876 *) Change the 'other' type in certificate aux info to a STACK_OF
8877 X509_ALGOR. Although not an AlgorithmIdentifier as such it has
8878 the required ASN1 format: arbitrary types determined by an OID.
8881 *) Add some PEM_write_X509_REQ_NEW() functions and a command line
8882 argument to 'req'. This is not because the function is newer or
8883 better than others it just uses the work 'NEW' in the certificate
8884 request header lines. Some software needs this.
8887 *) Reorganise password command line arguments: now passwords can be
8888 obtained from various sources. Delete the PEM_cb function and make
8889 it the default behaviour: i.e. if the callback is NULL and the
8890 usrdata argument is not NULL interpret it as a null terminated pass
8891 phrase. If usrdata and the callback are NULL then the pass phrase
8892 is prompted for as usual.
8895 *) Add support for the Compaq Atalla crypto accelerator. If it is installed,
8896 the support is automatically enabled. The resulting binaries will
8897 autodetect the card and use it if present.
8898 [Ben Laurie and Compaq Inc.]
8900 *) Work around for Netscape hang bug. This sends certificate request
8901 and server done in one record. Since this is perfectly legal in the
8902 SSL/TLS protocol it isn't a "bug" option and is on by default. See
8903 the bugs/SSLv3 entry for more info.
8906 *) HP-UX tune-up: new unified configs, HP C compiler bug workaround.
8909 *) Add -rand argument to smime and pkcs12 applications and read/write
8913 *) New 'passwd' tool for crypt(3) and apr1 password hashes.
8916 *) Add command line password options to the remaining applications.
8919 *) Bug fix for BN_div_recp() for numerators with an even number of
8923 *) More tests in bntest.c, and changed test_bn output.
8926 *) ./config recognizes MacOS X now.
8929 *) Bug fix for BN_div() when the first words of num and divsor are
8930 equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0).
8933 *) Add support for various broken PKCS#8 formats, and command line
8934 options to produce them.
8937 *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
8938 get temporary BIGNUMs from a BN_CTX.
8941 *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
8945 *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and
8946 include a #define from the old name to the new. The original intent
8947 was that statically linked binaries could for example just call
8948 SSLeay_add_all_ciphers() to just add ciphers to the table and not
8949 link with digests. This never worked because SSLeay_add_all_digests()
8950 and SSLeay_add_all_ciphers() were in the same source file so calling
8951 one would link with the other. They are now in separate source files.
8954 *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
8957 *) Use a less unusual form of the Miller-Rabin primality test (it used
8958 a binary algorithm for exponentiation integrated into the Miller-Rabin
8959 loop, our standard modexp algorithms are faster).
8962 *) Support for the EBCDIC character set completed.
8963 [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>]
8965 *) Source code cleanups: use const where appropriate, eliminate casts,
8966 use void * instead of char * in lhash.
8969 *) Bugfix: ssl3_send_server_key_exchange was not restartable
8970 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
8971 this the server could overwrite ephemeral keys that the client
8975 *) Turn DSA_is_prime into a macro that calls BN_is_prime,
8976 using 50 iterations of the Rabin-Miller test.
8978 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
8979 iterations of the Rabin-Miller test as required by the appendix
8980 to FIPS PUB 186[-1]) instead of DSA_is_prime.
8981 As BN_is_prime_fasttest includes trial division, DSA parameter
8982 generation becomes much faster.
8984 This implies a change for the callback functions in DSA_is_prime
8985 and DSA_generate_parameters: The callback function is called once
8986 for each positive witness in the Rabin-Miller test, not just
8987 occasionally in the inner loop; and the parameters to the
8988 callback function now provide an iteration count for the outer
8989 loop rather than for the current invocation of the inner loop.
8990 DSA_generate_parameters additionally can call the callback
8991 function with an 'iteration count' of -1, meaning that a
8992 candidate has passed the trial division test (when q is generated
8993 from an application-provided seed, trial division is skipped).
8996 *) New function BN_is_prime_fasttest that optionally does trial
8997 division before starting the Rabin-Miller test and has
8998 an additional BN_CTX * argument (whereas BN_is_prime always
8999 has to allocate at least one BN_CTX).
9000 'callback(1, -1, cb_arg)' is called when a number has passed the
9001 trial division stage.
9004 *) Fix for bug in CRL encoding. The validity dates weren't being handled
9008 *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
9011 *) New function BN_pseudo_rand().
9014 *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
9015 bignum version of BN_from_montgomery() with the working code from
9016 SSLeay 0.9.0 (the word based version is faster anyway), and clean up
9020 *) Avoid a race condition in s2_clnt.c (function get_server_hello) that
9021 made it impossible to use the same SSL_SESSION data structure in
9022 SSL2 clients in multiple threads.
9025 *) The return value of RAND_load_file() no longer counts bytes obtained
9026 by stat(). RAND_load_file(..., -1) is new and uses the complete file
9027 to seed the PRNG (previously an explicit byte count was required).
9028 [Ulf Möller, Bodo Möller]
9030 *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
9031 used (char *) instead of (void *) and had casts all over the place.
9034 *) Make BN_generate_prime() return NULL on error if ret!=NULL.
9037 *) Retain source code compatibility for BN_prime_checks macro:
9038 BN_is_prime(..., BN_prime_checks, ...) now uses
9039 BN_prime_checks_for_size to determine the appropriate number of
9040 Rabin-Miller iterations.
9043 *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
9044 DH_CHECK_P_NOT_SAFE_PRIME.
9045 (Check if this is true? OpenPGP calls them "strong".)
9048 *) Merge the functionality of "dh" and "gendh" programs into a new program
9049 "dhparam". The old programs are retained for now but will handle DH keys
9050 (instead of parameters) in future.
9053 *) Make the ciphers, s_server and s_client programs check the return values
9054 when a new cipher list is set.
9057 *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
9058 ciphers. Before when the 56bit ciphers were enabled the sorting was
9061 The syntax for the cipher sorting has been extended to support sorting by
9062 cipher-strength (using the strength_bits hard coded in the tables).
9063 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
9065 Fix a bug in the cipher-command parser: when supplying a cipher command
9066 string with an "undefined" symbol (neither command nor alphanumeric
9067 [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now
9068 an error is flagged.
9070 Due to the strength-sorting extension, the code of the
9071 ssl_create_cipher_list() function was completely rearranged. I hope that
9072 the readability was also increased :-)
9073 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
9075 *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1
9076 for the first serial number and places 2 in the serial number file. This
9077 avoids problems when the root CA is created with serial number zero and
9078 the first user certificate has the same issuer name and serial number
9082 *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
9083 the new code. Add documentation for this stuff.
9086 *) Changes to X509_ATTRIBUTE utilities. These have been renamed from
9087 X509_*() to X509at_*() on the grounds that they don't handle X509
9088 structures and behave in an analogous way to the X509v3 functions:
9089 they shouldn't be called directly but wrapper functions should be used
9092 So we also now have some wrapper functions that call the X509at functions
9093 when passed certificate requests. (TO DO: similar things can be done with
9094 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
9095 things. Some of these need some d2i or i2d and print functionality
9096 because they handle more complex structures.)
9099 *) Add missing #ifndefs that caused missing symbols when building libssl
9100 as a shared library without RSA. Use #ifndef NO_SSL2 instead of
9101 NO_RSA in ssl/s2*.c.
9102 [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller]
9104 *) Precautions against using the PRNG uninitialized: RAND_bytes() now
9105 has a return value which indicates the quality of the random data
9106 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
9107 error queue. New function RAND_pseudo_bytes() generates output that is
9108 guaranteed to be unique but not unpredictable. RAND_add is like
9109 RAND_seed, but takes an extra argument for an entropy estimate
9110 (RAND_seed always assumes full entropy).
9113 *) Do more iterations of Rabin-Miller probable prime test (specifically,
9114 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
9115 instead of only 2 for all lengths; see BN_prime_checks_for_size definition
9116 in crypto/bn/bn_prime.c for the complete table). This guarantees a
9117 false-positive rate of at most 2^-80 for random input.
9120 *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
9123 *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
9124 in the 0.9.5 release), this returns the chain
9125 from an X509_CTX structure with a dup of the stack and all
9126 the X509 reference counts upped: so the stack will exist
9127 after X509_CTX_cleanup() has been called. Modify pkcs12.c
9130 Also make SSL_SESSION_print() print out the verify return
9134 *) Add manpage for the pkcs12 command. Also change the default
9135 behaviour so MAC iteration counts are used unless the new
9136 -nomaciter option is used. This improves file security and
9137 only older versions of MSIE (4.0 for example) need it.
9140 *) Honor the no-xxx Configure options when creating .DEF files.
9143 *) Add PKCS#10 attributes to field table: challengePassword,
9144 unstructuredName and unstructuredAddress. These are taken from
9145 draft PKCS#9 v2.0 but are compatible with v1.2 provided no
9146 international characters are used.
9148 More changes to X509_ATTRIBUTE code: allow the setting of types
9149 based on strings. Remove the 'loc' parameter when adding
9150 attributes because these will be a SET OF encoding which is sorted
9154 *) Initial changes to the 'req' utility to allow request generation
9155 automation. This will allow an application to just generate a template
9156 file containing all the field values and have req construct the
9159 Initial support for X509_ATTRIBUTE handling. Stacks of these are
9160 used all over the place including certificate requests and PKCS#7
9161 structures. They are currently handled manually where necessary with
9162 some primitive wrappers for PKCS#7. The new functions behave in a
9163 manner analogous to the X509 extension functions: they allow
9164 attributes to be looked up by NID and added.
9166 Later something similar to the X509V3 code would be desirable to
9167 automatically handle the encoding, decoding and printing of the
9168 more complex types. The string types like challengePassword can
9169 be handled by the string table functions.
9171 Also modified the multi byte string table handling. Now there is
9172 a 'global mask' which masks out certain types. The table itself
9173 can use the flag STABLE_NO_MASK to ignore the mask setting: this
9174 is useful when for example there is only one permissible type
9175 (as in countryName) and using the mask might result in no valid
9179 *) Clean up 'Finished' handling, and add functions SSL_get_finished and
9180 SSL_get_peer_finished to allow applications to obtain the latest
9181 Finished messages sent to the peer or expected from the peer,
9182 respectively. (SSL_get_peer_finished is usually the Finished message
9183 actually received from the peer, otherwise the protocol will be aborted.)
9185 As the Finished message are message digests of the complete handshake
9186 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
9187 be used for external authentication procedures when the authentication
9188 provided by SSL/TLS is not desired or is not enough.
9191 *) Enhanced support for Alpha Linux is added. Now ./config checks if
9192 the host supports BWX extension and if Compaq C is present on the
9193 $PATH. Just exploiting of the BWX extension results in 20-30%
9194 performance kick for some algorithms, e.g. DES and RC4 to mention
9195 a couple. Compaq C in turn generates ~20% faster code for MD5 and
9199 *) Add support for MS "fast SGC". This is arguably a violation of the
9200 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
9201 weak crypto and after checking the certificate is SGC a second one
9202 with strong crypto. MS SGC stops the first handshake after receiving
9203 the server certificate message and sends a second client hello. Since
9204 a server will typically do all the time consuming operations before
9205 expecting any further messages from the client (server key exchange
9206 is the most expensive) there is little difference between the two.
9208 To get OpenSSL to support MS SGC we have to permit a second client
9209 hello message after we have sent server done. In addition we have to
9210 reset the MAC if we do get this second client hello.
9213 *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide
9214 if a DER encoded private key is RSA or DSA traditional format. Changed
9215 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
9216 format DER encoded private key. Newer code should use PKCS#8 format which
9217 has the key type encoded in the ASN1 structure. Added DER private key
9218 support to pkcs8 application.
9221 *) SSL 3/TLS 1 servers now don't request certificates when an anonymous
9222 ciphersuites has been selected (as required by the SSL 3/TLS 1
9223 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
9224 is set, we interpret this as a request to violate the specification
9225 (the worst that can happen is a handshake failure, and 'correct'
9226 behaviour would result in a handshake failure anyway).
9229 *) In SSL_CTX_add_session, take into account that there might be multiple
9230 SSL_SESSION structures with the same session ID (e.g. when two threads
9231 concurrently obtain them from an external cache).
9232 The internal cache can handle only one SSL_SESSION with a given ID,
9233 so if there's a conflict, we now throw out the old one to achieve
9237 *) Add OIDs for idea and blowfish in CBC mode. This will allow both
9238 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
9239 some routines that use cipher OIDs: some ciphers do not have OIDs
9240 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
9244 *) Simplify the trust setting structure and code. Now we just have
9245 two sequences of OIDs for trusted and rejected settings. These will
9246 typically have values the same as the extended key usage extension
9247 and any application specific purposes.
9249 The trust checking code now has a default behaviour: it will just
9250 check for an object with the same NID as the passed id. Functions can
9251 be provided to override either the default behaviour or the behaviour
9252 for a given id. SSL client, server and email already have functions
9253 in place for compatibility: they check the NID and also return "trusted"
9254 if the certificate is self signed.
9257 *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the
9258 traditional format into an EVP_PKEY structure.
9261 *) Add a password callback function PEM_cb() which either prompts for
9262 a password if usr_data is NULL or otherwise assumes it is a null
9263 terminated password. Allow passwords to be passed on command line
9264 environment or config files in a few more utilities.
9267 *) Add a bunch of DER and PEM functions to handle PKCS#8 format private
9268 keys. Add some short names for PKCS#8 PBE algorithms and allow them
9269 to be specified on the command line for the pkcs8 and pkcs12 utilities.
9270 Update documentation.
9273 *) Support for ASN1 "NULL" type. This could be handled before by using
9274 ASN1_TYPE but there wasn't any function that would try to read a NULL
9275 and produce an error if it couldn't. For compatibility we also have
9276 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
9277 don't allocate anything because they don't need to.
9280 *) Initial support for MacOS is now provided. Examine INSTALL.MacOS
9282 [Andy Polyakov, Roy Woods <roy@centicsystems.ca>]
9284 *) Rebuild of the memory allocation routines used by OpenSSL code and
9285 possibly others as well. The purpose is to make an interface that
9286 provide hooks so anyone can build a separate set of allocation and
9287 deallocation routines to be used by OpenSSL, for example memory
9288 pool implementations, or something else, which was previously hard
9289 since Malloc(), Realloc() and Free() were defined as macros having
9290 the values malloc, realloc and free, respectively (except for Win32
9291 compilations). The same is provided for memory debugging code.
9292 OpenSSL already comes with functionality to find memory leaks, but
9293 this gives people a chance to debug other memory problems.
9295 With these changes, a new set of functions and macros have appeared:
9297 CRYPTO_set_mem_debug_functions() [F]
9298 CRYPTO_get_mem_debug_functions() [F]
9299 CRYPTO_dbg_set_options() [F]
9300 CRYPTO_dbg_get_options() [F]
9301 CRYPTO_malloc_debug_init() [M]
9303 The memory debug functions are NULL by default, unless the library
9304 is compiled with CRYPTO_MDEBUG or friends is defined. If someone
9305 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
9306 gives the standard debugging functions that come with OpenSSL) or
9307 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
9308 provided by the library user) must be used. When the standard
9309 debugging functions are used, CRYPTO_dbg_set_options can be used to
9310 request additional information:
9311 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
9312 the CRYPTO_MDEBUG_xxx macro when compiling the library.
9314 Also, things like CRYPTO_set_mem_functions will always give the
9315 expected result (the new set of functions is used for allocation
9316 and deallocation) at all times, regardless of platform and compiler
9319 To finish it up, some functions that were never use in any other
9320 way than through macros have a new API and new semantic:
9323 CRYPTO_dbg_realloc()
9326 All macros of value have retained their old syntax.
9327 [Richard Levitte and Bodo Moeller]
9329 *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
9330 ordering of SMIMECapabilities wasn't in "strength order" and there
9331 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
9335 *) Some ASN1 types with illegal zero length encoding (INTEGER,
9336 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
9337 [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson]
9339 *) Merge in my S/MIME library for OpenSSL. This provides a simple
9340 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
9341 functionality to handle multipart/signed properly) and a utility
9342 called 'smime' to call all this stuff. This is based on code I
9343 originally wrote for Celo who have kindly allowed it to be
9344 included in OpenSSL.
9347 *) Add variants des_set_key_checked and des_set_key_unchecked of
9348 des_set_key (aka des_key_sched). Global variable des_check_key
9349 decides which of these is called by des_set_key; this way
9350 des_check_key behaves as it always did, but applications and
9351 the library itself, which was buggy for des_check_key == 1,
9352 have a cleaner way to pick the version they need.
9355 *) New function PKCS12_newpass() which changes the password of a
9359 *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and
9360 dynamic mix. In both cases the ids can be used as an index into the
9361 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
9362 functions so they accept a list of the field values and the
9363 application doesn't need to directly manipulate the X509_TRUST
9367 *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
9371 *) Modify the way the V3 extension code looks up extensions. This now
9372 works in a similar way to the object code: we have some "standard"
9373 extensions in a static table which is searched with OBJ_bsearch()
9374 and the application can add dynamic ones if needed. The file
9375 crypto/x509v3/ext_dat.h now has the info: this file needs to be
9376 updated whenever a new extension is added to the core code and kept
9377 in ext_nid order. There is a simple program 'tabtest.c' which checks
9378 this. New extensions are not added too often so this file can readily
9379 be maintained manually.
9381 There are two big advantages in doing things this way. The extensions
9382 can be looked up immediately and no longer need to be "added" using
9383 X509V3_add_standard_extensions(): this function now does nothing.
9384 [Side note: I get *lots* of email saying the extension code doesn't
9385 work because people forget to call this function]
9386 Also no dynamic allocation is done unless new extensions are added:
9387 so if we don't add custom extensions there is no need to call
9388 X509V3_EXT_cleanup().
9391 *) Modify enc utility's salting as follows: make salting the default. Add a
9392 magic header, so unsalted files fail gracefully instead of just decrypting
9393 to garbage. This is because not salting is a big security hole, so people
9394 should be discouraged from doing it.
9397 *) Fixes and enhancements to the 'x509' utility. It allowed a message
9398 digest to be passed on the command line but it only used this
9399 parameter when signing a certificate. Modified so all relevant
9400 operations are affected by the digest parameter including the
9401 -fingerprint and -x509toreq options. Also -x509toreq choked if a
9402 DSA key was used because it didn't fix the digest.
9405 *) Initial certificate chain verify code. Currently tests the untrusted
9406 certificates for consistency with the verify purpose (which is set
9407 when the X509_STORE_CTX structure is set up) and checks the pathlength.
9409 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
9410 this is because it will reject chains with invalid extensions whereas
9411 every previous version of OpenSSL and SSLeay made no checks at all.
9413 Trust code: checks the root CA for the relevant trust settings. Trust
9414 settings have an initial value consistent with the verify purpose: e.g.
9415 if the verify purpose is for SSL client use it expects the CA to be
9416 trusted for SSL client use. However the default value can be changed to
9417 permit custom trust settings: one example of this would be to only trust
9418 certificates from a specific "secure" set of CAs.
9420 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
9421 which should be used for version portability: especially since the
9422 verify structure is likely to change more often now.
9424 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
9425 to set them. If not set then assume SSL clients will verify SSL servers
9428 Two new options to the verify program: -untrusted allows a set of
9429 untrusted certificates to be passed in and -purpose which sets the
9430 intended purpose of the certificate. If a purpose is set then the
9431 new chain verify code is used to check extension consistency.
9434 *) Support for the authority information access extension.
9437 *) Modify RSA and DSA PEM read routines to transparently handle
9438 PKCS#8 format private keys. New *_PUBKEY_* functions that handle
9439 public keys in a format compatible with certificate
9440 SubjectPublicKeyInfo structures. Unfortunately there were already
9441 functions called *_PublicKey_* which used various odd formats so
9442 these are retained for compatibility: however the DSA variants were
9443 never in a public release so they have been deleted. Changed dsa/rsa
9444 utilities to handle the new format: note no releases ever handled public
9445 keys so we should be OK.
9447 The primary motivation for this change is to avoid the same fiasco
9448 that dogs private keys: there are several incompatible private key
9449 formats some of which are standard and some OpenSSL specific and
9450 require various evil hacks to allow partial transparent handling and
9451 even then it doesn't work with DER formats. Given the option anything
9452 other than PKCS#8 should be dumped: but the other formats have to
9453 stay in the name of compatibility.
9455 With public keys and the benefit of hindsight one standard format
9456 is used which works with EVP_PKEY, RSA or DSA structures: though
9457 it clearly returns an error if you try to read the wrong kind of key.
9459 Added a -pubkey option to the 'x509' utility to output the public key.
9460 Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*()
9461 (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add
9462 EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*())
9463 that do the same as the EVP_PKEY_assign_*() except they up the
9464 reference count of the added key (they don't "swallow" the
9468 *) Fixes to crypto/x509/by_file.c the code to read in certificates and
9469 CRLs would fail if the file contained no certificates or no CRLs:
9470 added a new function to read in both types and return the number
9471 read: this means that if none are read it will be an error. The
9472 DER versions of the certificate and CRL reader would always fail
9473 because it isn't possible to mix certificates and CRLs in DER format
9474 without choking one or the other routine. Changed this to just read
9475 a certificate: this is the best we can do. Also modified the code
9476 in apps/verify.c to take notice of return codes: it was previously
9477 attempting to read in certificates from NULL pointers and ignoring
9478 any errors: this is one reason why the cert and CRL reader seemed
9479 to work. It doesn't check return codes from the default certificate
9480 routines: these may well fail if the certificates aren't installed.
9483 *) Code to support otherName option in GeneralName.
9486 *) First update to verify code. Change the verify utility
9487 so it warns if it is passed a self signed certificate:
9488 for consistency with the normal behaviour. X509_verify
9489 has been modified to it will now verify a self signed
9490 certificate if *exactly* the same certificate appears
9491 in the store: it was previously impossible to trust a
9492 single self signed certificate. This means that:
9493 openssl verify ss.pem
9494 now gives a warning about a self signed certificate but
9495 openssl verify -CAfile ss.pem ss.pem
9499 *) For servers, store verify_result in SSL_SESSION data structure
9500 (and add it to external session representation).
9501 This is needed when client certificate verifications fails,
9502 but an application-provided verification callback (set by
9503 SSL_CTX_set_cert_verify_callback) allows accepting the session
9504 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
9505 but returns 1): When the session is reused, we have to set
9506 ssl->verify_result to the appropriate error code to avoid
9508 [Bodo Moeller, problem pointed out by Lutz Jaenicke]
9510 *) Fix a bug in the new PKCS#7 code: it didn't consider the
9511 case in PKCS7_dataInit() where the signed PKCS7 structure
9512 didn't contain any existing data because it was being created.
9513 [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson]
9515 *) Add a salt to the key derivation routines in enc.c. This
9516 forms the first 8 bytes of the encrypted file. Also add a
9517 -S option to allow a salt to be input on the command line.
9520 *) New function X509_cmp(). Oddly enough there wasn't a function
9521 to compare two certificates. We do this by working out the SHA1
9522 hash and comparing that. X509_cmp() will be needed by the trust
9526 *) SSL_get1_session() is like SSL_get_session(), but increments
9527 the reference count in the SSL_SESSION returned.
9528 [Geoff Thorpe <geoff@eu.c2.net>]
9530 *) Fix for 'req': it was adding a null to request attributes.
9531 Also change the X509_LOOKUP and X509_INFO code to handle
9532 certificate auxiliary information.
9535 *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document
9539 *) Add the possibility to add extra information to the memory leak
9540 detecting output, to form tracebacks, showing from where each
9541 allocation was originated: CRYPTO_push_info("constant string") adds
9542 the string plus current file name and line number to a per-thread
9543 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
9544 is like calling CYRPTO_pop_info() until the stack is empty.
9545 Also updated memory leak detection code to be multi-thread-safe.
9548 *) Add options -text and -noout to pkcs7 utility and delete the
9549 encryption options which never did anything. Update docs.
9552 *) Add options to some of the utilities to allow the pass phrase
9553 to be included on either the command line (not recommended on
9554 OSes like Unix) or read from the environment. Update the
9555 manpages and fix a few bugs.
9558 *) Add a few manpages for some of the openssl commands.
9561 *) Fix the -revoke option in ca. It was freeing up memory twice,
9562 leaking and not finding already revoked certificates.
9565 *) Extensive changes to support certificate auxiliary information.
9566 This involves the use of X509_CERT_AUX structure and X509_AUX
9567 functions. An X509_AUX function such as PEM_read_X509_AUX()
9568 can still read in a certificate file in the usual way but it
9569 will also read in any additional "auxiliary information". By
9570 doing things this way a fair degree of compatibility can be
9571 retained: existing certificates can have this information added
9572 using the new 'x509' options.
9574 Current auxiliary information includes an "alias" and some trust
9575 settings. The trust settings will ultimately be used in enhanced
9576 certificate chain verification routines: currently a certificate
9577 can only be trusted if it is self signed and then it is trusted
9581 *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD).
9582 The problem was that one of the replacement routines had not been working
9583 since SSLeay releases. For now the offending routine has been replaced
9584 with non-optimised assembler. Even so, this now gives around 95%
9585 performance improvement for 1024 bit RSA signs.
9588 *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2
9589 handling. Most clients have the effective key size in bits equal to
9590 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
9591 A few however don't do this and instead use the size of the decrypted key
9592 to determine the RC2 key length and the AlgorithmIdentifier to determine
9593 the effective key length. In this case the effective key length can still
9594 be 40 bits but the key length can be 168 bits for example. This is fixed
9595 by manually forcing an RC2 key into the EVP_PKEY structure because the
9596 EVP code can't currently handle unusual RC2 key sizes: it always assumes
9597 the key length and effective key length are equal.
9600 *) Add a bunch of functions that should simplify the creation of
9601 X509_NAME structures. Now you should be able to do:
9602 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
9603 and have it automatically work out the correct field type and fill in
9604 the structures. The more adventurous can try:
9605 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
9606 and it will (hopefully) work out the correct multibyte encoding.
9609 *) Change the 'req' utility to use the new field handling and multibyte
9610 copy routines. Before the DN field creation was handled in an ad hoc
9611 way in req, ca, and x509 which was rather broken and didn't support
9612 BMPStrings or UTF8Strings. Since some software doesn't implement
9613 BMPStrings or UTF8Strings yet, they can be enabled using the config file
9614 using the dirstring_type option. See the new comment in the default
9615 openssl.cnf for more info.
9618 *) Make crypto/rand/md_rand.c more robust:
9619 - Assure unique random numbers after fork().
9620 - Make sure that concurrent threads access the global counter and
9621 md serializably so that we never lose entropy in them
9622 or use exactly the same state in multiple threads.
9623 Access to the large state is not always serializable because
9624 the additional locking could be a performance killer, and
9625 md should be large enough anyway.
9628 *) New file apps/app_rand.c with commonly needed functionality
9629 for handling the random seed file.
9631 Use the random seed file in some applications that previously did not:
9633 dsaparam -genkey (which also ignored its '-rand' option),
9636 x509 (when signing).
9637 Except on systems with /dev/urandom, it is crucial to have a random
9638 seed file at least for key creation, DSA signing, and for DH exchanges;
9639 for RSA signatures we could do without one.
9641 gendh and gendsa (unlike genrsa) used to read only the first byte
9642 of each file listed in the '-rand' option. The function as previously
9643 found in genrsa is now in app_rand.c and is used by all programs
9644 that support '-rand'.
9647 *) In RAND_write_file, use mode 0600 for creating files;
9648 don't just chmod when it may be too late.
9651 *) Report an error from X509_STORE_load_locations
9652 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
9655 *) New function ASN1_mbstring_copy() this copies a string in either
9656 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
9657 into an ASN1_STRING type. A mask of permissible types is passed
9658 and it chooses the "minimal" type to use or an error if not type
9662 *) Add function equivalents to the various macros in asn1.h. The old
9663 macros are retained with an M_ prefix. Code inside the library can
9664 use the M_ macros. External code (including the openssl utility)
9665 should *NOT* in order to be "shared library friendly".
9668 *) Add various functions that can check a certificate's extensions
9669 to see if it usable for various purposes such as SSL client,
9670 server or S/MIME and CAs of these types. This is currently
9671 VERY EXPERIMENTAL but will ultimately be used for certificate chain
9672 verification. Also added a -purpose flag to x509 utility to
9673 print out all the purposes.
9676 *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated
9680 *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search
9681 for, obtain and decode and extension and obtain its critical flag.
9682 This allows all the necessary extension code to be handled in a
9683 single function call.
9686 *) RC4 tune-up featuring 30-40% performance improvement on most RISC
9687 platforms. See crypto/rc4/rc4_enc.c for further details.
9690 *) New -noout option to asn1parse. This causes no output to be produced
9691 its main use is when combined with -strparse and -out to extract data
9692 from a file (which may not be in ASN.1 format).
9695 *) Fix for pkcs12 program. It was hashing an invalid certificate pointer
9696 when producing the local key id.
9697 [Richard Levitte <levitte@stacken.kth.se>]
9699 *) New option -dhparam in s_server. This allows a DH parameter file to be
9700 stated explicitly. If it is not stated then it tries the first server
9701 certificate file. The previous behaviour hard coded the filename
9705 *) Add -pubin and -pubout options to the rsa and dsa commands. These allow
9706 a public key to be input or output. For example:
9707 openssl rsa -in key.pem -pubout -out pubkey.pem
9708 Also added necessary DSA public key functions to handle this.
9711 *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
9712 in the message. This was handled by allowing
9713 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
9714 [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>]
9716 *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
9717 to the end of the strings whereas this didn't. This would cause problems
9718 if strings read with d2i_ASN1_bytes() were later modified.
9719 [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>]
9721 *) Fix for base64 decode bug. When a base64 bio reads only one line of
9722 data and it contains EOF it will end up returning an error. This is
9723 caused by input 46 bytes long. The cause is due to the way base64
9724 BIOs find the start of base64 encoded data. They do this by trying a
9725 trial decode on each line until they find one that works. When they
9726 do a flag is set and it starts again knowing it can pass all the
9727 data directly through the decoder. Unfortunately it doesn't reset
9728 the context it uses. This means that if EOF is reached an attempt
9729 is made to pass two EOFs through the context and this causes the
9730 resulting error. This can also cause other problems as well. As is
9731 usual with these problems it takes *ages* to find and the fix is
9732 trivial: move one line.
9733 [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ]
9735 *) Ugly workaround to get s_client and s_server working under Windows. The
9736 old code wouldn't work because it needed to select() on sockets and the
9737 tty (for keypresses and to see if data could be written). Win32 only
9738 supports select() on sockets so we select() with a 1s timeout on the
9739 sockets and then see if any characters are waiting to be read, if none
9740 are present then we retry, we also assume we can always write data to
9741 the tty. This isn't nice because the code then blocks until we've
9742 received a complete line of data and it is effectively polling the
9743 keyboard at 1s intervals: however it's quite a bit better than not
9744 working at all :-) A dedicated Windows application might handle this
9745 with an event loop for example.
9748 *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
9749 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
9750 will be called when RSA_sign() and RSA_verify() are used. This is useful
9751 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
9752 For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
9753 should *not* be used: RSA_sign() and RSA_verify() must be used instead.
9754 This necessitated the support of an extra signature type NID_md5_sha1
9755 for SSL signatures and modifications to the SSL library to use it instead
9756 of calling RSA_public_decrypt() and RSA_private_encrypt().
9759 *) Add new -verify -CAfile and -CApath options to the crl program, these
9760 will lookup a CRL issuers certificate and verify the signature in a
9761 similar way to the verify program. Tidy up the crl program so it
9762 no longer accesses structures directly. Make the ASN1 CRL parsing a bit
9763 less strict. It will now permit CRL extensions even if it is not
9764 a V2 CRL: this will allow it to tolerate some broken CRLs.
9767 *) Initialize all non-automatic variables each time one of the openssl
9768 sub-programs is started (this is necessary as they may be started
9769 multiple times from the "OpenSSL>" prompt).
9770 [Lennart Bang, Bodo Moeller]
9772 *) Preliminary compilation option RSA_NULL which disables RSA crypto without
9773 removing all other RSA functionality (this is what NO_RSA does). This
9774 is so (for example) those in the US can disable those operations covered
9775 by the RSA patent while allowing storage and parsing of RSA keys and RSA
9779 *) Non-copying interface to BIO pairs.
9780 (still largely untested)
9783 *) New function ANS1_tag2str() to convert an ASN1 tag to a descriptive
9784 ASCII string. This was handled independently in various places before.
9787 *) New functions UTF8_getc() and UTF8_putc() that parse and generate
9788 UTF8 strings a character at a time.
9791 *) Use client_version from client hello to select the protocol
9792 (s23_srvr.c) and for RSA client key exchange verification
9793 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
9796 *) Add various utility functions to handle SPKACs, these were previously
9797 handled by poking round in the structure internals. Added new function
9798 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
9799 print, verify and generate SPKACs. Based on an original idea from
9800 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
9803 *) RIPEMD160 is operational on all platforms and is back in 'make test'.
9806 *) Allow the config file extension section to be overwritten on the
9807 command line. Based on an original idea from Massimiliano Pala
9808 <madwolf@comune.modena.it>. The new option is called -extensions
9809 and can be applied to ca, req and x509. Also -reqexts to override
9810 the request extensions in req and -crlexts to override the crl extensions
9814 *) Add new feature to the SPKAC handling in ca. Now you can include
9815 the same field multiple times by preceding it by "XXXX." for example:
9818 this is the same syntax as used in the req config file.
9821 *) Allow certificate extensions to be added to certificate requests. These
9822 are specified in a 'req_extensions' option of the req section of the
9823 config file. They can be printed out with the -text option to req but
9824 are otherwise ignored at present.
9827 *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
9828 data read consists of only the final block it would not decrypted because
9829 EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
9830 A misplaced 'break' also meant the decrypted final block might not be
9831 copied until the next read.
9834 *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
9835 a few extra parameters to the DH structure: these will be useful if
9836 for example we want the value of 'q' or implement X9.42 DH.
9839 *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and
9840 provides hooks that allow the default DSA functions or functions on a
9841 "per key" basis to be replaced. This allows hardware acceleration and
9842 hardware key storage to be handled without major modification to the
9843 library. Also added low level modexp hooks and CRYPTO_EX structure and
9844 associated functions.
9847 *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
9848 as "read only": it can't be written to and the buffer it points to will
9849 not be freed. Reading from a read only BIO is much more efficient than
9850 a normal memory BIO. This was added because there are several times when
9851 an area of memory needs to be read from a BIO. The previous method was
9852 to create a memory BIO and write the data to it, this results in two
9853 copies of the data and an O(n^2) reading algorithm. There is a new
9854 function BIO_new_mem_buf() which creates a read only memory BIO from
9855 an area of memory. Also modified the PKCS#7 routines to use read only
9859 *) Bugfix: ssl23_get_client_hello did not work properly when called in
9860 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
9861 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
9862 but a retry condition occured while trying to read the rest.
9865 *) The PKCS7_ENC_CONTENT_new() function was setting the content type as
9866 NID_pkcs7_encrypted by default: this was wrong since this should almost
9867 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
9868 the encrypted data type: this is a more sensible place to put it and it
9869 allows the PKCS#12 code to be tidied up that duplicated this
9873 *) Changed obj_dat.pl script so it takes its input and output files on
9874 the command line. This should avoid shell escape redirection problems
9878 *) Initial support for certificate extension requests, these are included
9879 in things like Xenroll certificate requests. Included functions to allow
9880 extensions to be obtained and added.
9883 *) -crlf option to s_client and s_server for sending newlines as
9884 CRLF (as required by many protocols).
9887 Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
9889 *) Install libRSAglue.a when OpenSSL is built with RSAref.
9890 [Ralf S. Engelschall]
9892 *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency.
9893 [Andrija Antonijevic <TheAntony2@bigfoot.com>]
9895 *) Fix -startdate and -enddate (which was missing) arguments to 'ca'
9899 *) New function DSA_dup_DH, which duplicates DSA parameters/keys as
9900 DH parameters/keys (q is lost during that conversion, but the resulting
9901 DH parameters contain its length).
9903 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
9904 much faster than DH_generate_parameters (which creates parameters
9905 where p = 2*q + 1), and also the smaller q makes DH computations
9906 much more efficient (160-bit exponentiation instead of 1024-bit
9907 exponentiation); so this provides a convenient way to support DHE
9908 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
9909 utter importance to use
9910 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
9912 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
9913 when such DH parameters are used, because otherwise small subgroup
9914 attacks may become possible!
9917 *) Avoid memory leak in i2d_DHparams.
9920 *) Allow the -k option to be used more than once in the enc program:
9921 this allows the same encrypted message to be read by multiple recipients.
9924 *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
9925 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
9926 it will always use the numerical form of the OID, even if it has a short
9930 *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
9931 method only got called if p,q,dmp1,dmq1,iqmp components were present,
9932 otherwise bn_mod_exp was called. In the case of hardware keys for example
9933 no private key components need be present and it might store extra data
9934 in the RSA structure, which cannot be accessed from bn_mod_exp.
9935 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
9936 private key operations.
9939 *) Added support for SPARC Linux.
9942 *) pem_password_cb function type incompatibly changed from
9943 typedef int pem_password_cb(char *buf, int size, int rwflag);
9945 ....(char *buf, int size, int rwflag, void *userdata);
9946 so that applications can pass data to their callbacks:
9947 The PEM[_ASN1]_{read,write}... functions and macros now take an
9948 additional void * argument, which is just handed through whenever
9949 the password callback is called.
9950 [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller]
9952 New function SSL_CTX_set_default_passwd_cb_userdata.
9954 Compatibility note: As many C implementations push function arguments
9955 onto the stack in reverse order, the new library version is likely to
9956 interoperate with programs that have been compiled with the old
9957 pem_password_cb definition (PEM_whatever takes some data that
9958 happens to be on the stack as its last argument, and the callback
9959 just ignores this garbage); but there is no guarantee whatsoever that
9962 *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
9963 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
9964 problems not only on Windows, but also on some Unix platforms.
9965 To avoid problematic command lines, these definitions are now in an
9966 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
9967 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
9970 *) MIPS III/IV assembler module is reimplemented.
9973 *) More DES library cleanups: remove references to srand/rand and
9974 delete an unused file.
9977 *) Add support for the the free Netwide assembler (NASM) under Win32,
9978 since not many people have MASM (ml) and it can be hard to obtain.
9979 This is currently experimental but it seems to work OK and pass all
9980 the tests. Check out INSTALL.W32 for info.
9983 *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
9984 without temporary keys kept an extra copy of the server key,
9985 and connections with temporary keys did not free everything in case
9989 *) New function RSA_check_key and new openssl rsa option -check
9990 for verifying the consistency of RSA keys.
9991 [Ulf Moeller, Bodo Moeller]
9993 *) Various changes to make Win32 compile work:
9994 1. Casts to avoid "loss of data" warnings in p5_crpt2.c
9995 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
9996 comparison" warnings.
9997 3. Add sk_<TYPE>_sort to DEF file generator and do make update.
10000 *) Add a debugging option to PKCS#5 v2 key generation function: when
10001 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
10002 derived keys are printed to stderr.
10005 *) Copy the flags in ASN1_STRING_dup().
10006 [Roman E. Pavlov <pre@mo.msk.ru>]
10008 *) The x509 application mishandled signing requests containing DSA
10009 keys when the signing key was also DSA and the parameters didn't match.
10011 It was supposed to omit the parameters when they matched the signing key:
10012 the verifying software was then supposed to automatically use the CA's
10013 parameters if they were absent from the end user certificate.
10015 Omitting parameters is no longer recommended. The test was also
10016 the wrong way round! This was probably due to unusual behaviour in
10017 EVP_cmp_parameters() which returns 1 if the parameters match.
10018 This meant that parameters were omitted when they *didn't* match and
10019 the certificate was useless. Certificates signed with 'ca' didn't have
10021 [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>]
10023 *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
10024 The interface is as follows:
10025 Applications can use
10026 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
10027 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
10028 "off" is now the default.
10029 The library internally uses
10030 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
10031 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
10032 to disable memory-checking temporarily.
10034 Some inconsistent states that previously were possible (and were
10035 even the default) are now avoided.
10037 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
10038 with each memory chunk allocated; this is occasionally more helpful
10039 than just having a counter.
10041 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
10043 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
10047 *) Introduce "mode" for SSL structures (with defaults in SSL_CTX),
10048 which largely parallels "options", but is for changing API behaviour,
10049 whereas "options" are about protocol behaviour.
10050 Initial "mode" flags are:
10052 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when
10053 a single record has been written.
10054 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write
10055 retries use the same buffer location.
10056 (But all of the contents must be
10060 *) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options
10063 *) Fix problems with no-hmac etc.
10064 [Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>]
10066 *) New functions RSA_get_default_method(), RSA_set_method() and
10067 RSA_get_method(). These allows replacement of RSA_METHODs without having
10068 to mess around with the internals of an RSA structure.
10071 *) Fix memory leaks in DSA_do_sign and DSA_is_prime.
10072 Also really enable memory leak checks in openssl.c and in some
10074 [Chad C. Mulligan, Bodo Moeller]
10076 *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
10077 up the length of negative integers. This has now been simplified to just
10078 store the length when it is first determined and use it later, rather
10079 than trying to keep track of where data is copied and updating it to
10081 [Steve Henson, reported by Brien Wheeler
10082 <bwheeler@authentica-security.com>]
10084 *) Add a new function PKCS7_signatureVerify. This allows the verification
10085 of a PKCS#7 signature but with the signing certificate passed to the
10086 function itself. This contrasts with PKCS7_dataVerify which assumes the
10087 certificate is present in the PKCS#7 structure. This isn't always the
10088 case: certificates can be omitted from a PKCS#7 structure and be
10089 distributed by "out of band" means (such as a certificate database).
10092 *) Complete the PEM_* macros with DECLARE_PEM versions to replace the
10093 function prototypes in pem.h, also change util/mkdef.pl to add the
10094 necessary function names.
10097 *) mk1mf.pl (used by Windows builds) did not properly read the
10098 options set by Configure in the top level Makefile, and Configure
10099 was not even able to write more than one option correctly.
10100 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
10103 *) New functions CONF_load_bio() and CONF_load_fp() to allow a config
10104 file to be loaded from a BIO or FILE pointer. The BIO version will
10105 for example allow memory BIOs to contain config info.
10108 *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
10109 Whoever hopes to achieve shared-library compatibility across versions
10110 must use this, not the compile-time macro.
10111 (Exercise 0.9.4: Which is the minimum library version required by
10113 Note: All this applies only to multi-threaded programs, others don't
10117 *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests
10118 through a BIO pair triggered the default case, i.e.
10119 SSLerr(...,SSL_R_UNKNOWN_STATE).
10122 *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
10123 can use the SSL library even if none of the specific BIOs is
10127 *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
10128 for the encoded length.
10129 [Jeon KyoungHo <khjeon@sds.samsung.co.kr>]
10131 *) Add initial documentation of the X509V3 functions.
10134 *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and
10135 PEM_write_bio_PKCS8PrivateKey() that are equivalent to
10136 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
10137 secure PKCS#8 private key format with a high iteration count.
10140 *) Fix determination of Perl interpreter: A perl or perl5
10141 _directory_ in $PATH was also accepted as the interpreter.
10142 [Ralf S. Engelschall]
10144 *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking
10145 wrong with it but it was very old and did things like calling
10146 PEM_ASN1_read() directly and used MD5 for the hash not to mention some
10147 unusual formatting.
10150 *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed
10151 to use the new extension code.
10154 *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
10155 with macros. This should make it easier to change their form, add extra
10156 arguments etc. Fix a few PEM prototypes which didn't have cipher as a
10160 *) Add to configuration table a new entry that can specify an alternative
10161 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
10162 according to Mark Crispin <MRC@Panda.COM>.
10166 *) DES CBC did not update the IV. Weird.
10169 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
10170 Changing the behaviour of the former might break existing programs --
10171 where IV updating is needed, des_ncbc_encrypt can be used.
10174 *) When bntest is run from "make test" it drives bc to check its
10175 calculations, as well as internally checking them. If an internal check
10176 fails, it needs to cause bc to give a non-zero result or make test carries
10177 on without noticing the failure. Fixed.
10180 *) DES library cleanups.
10183 *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
10184 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
10185 ciphers. NOTE: although the key derivation function has been verified
10186 against some published test vectors it has not been extensively tested
10187 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
10191 *) Instead of "mkdir -p", which is not fully portable, use new
10192 Perl script "util/mkdir-p.pl".
10195 *) Rewrite the way password based encryption (PBE) is handled. It used to
10196 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
10197 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
10198 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
10199 the 'parameter' field of the AlgorithmIdentifier is passed to the
10200 underlying key generation function so it must do its own ASN1 parsing.
10201 This has also changed the EVP_PBE_CipherInit() function which now has a
10202 'parameter' argument instead of literal salt and iteration count values
10203 and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
10206 *) Support for PKCS#5 v1.5 compatible password based encryption algorithms
10207 and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
10208 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
10209 KEY" because this clashed with PKCS#8 unencrypted string. Since this
10210 value was just used as a "magic string" and not used directly its
10211 value doesn't matter.
10214 *) Introduce some semblance of const correctness to BN. Shame C doesn't
10218 *) "linux-sparc64" configuration (ultrapenguin).
10219 [Ray Miller <ray.miller@oucs.ox.ac.uk>]
10220 "linux-sparc" configuration.
10221 [Christian Forster <fo@hawo.stw.uni-erlangen.de>]
10223 *) config now generates no-xxx options for missing ciphers.
10226 *) Support the EBCDIC character set (work in progress).
10227 File ebcdic.c not yet included because it has a different license.
10228 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
10230 *) Support BS2000/OSD-POSIX.
10231 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
10233 *) Make callbacks for key generation use void * instead of char *.
10236 *) Make S/MIME samples compile (not yet tested).
10239 *) Additional typesafe stacks.
10242 *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
10246 Changes between 0.9.3 and 0.9.3a [29 May 1999]
10248 *) New configuration variant "sco5-gcc".
10250 *) Updated some demos.
10251 [Sean O Riordain, Wade Scholine]
10253 *) Add missing BIO_free at exit of pkcs12 application.
10256 *) Fix memory leak in conf.c.
10259 *) Updates for Win32 to assembler version of MD5.
10262 *) Set #! path to perl in apps/der_chop to where we found it
10263 instead of using a fixed path.
10266 *) SHA library changes for irix64-mips4-cc.
10269 *) Improvements for VMS support.
10273 Changes between 0.9.2b and 0.9.3 [24 May 1999]
10275 *) Bignum library bug fix. IRIX 6 passes "make test" now!
10276 This also avoids the problems with SC4.2 and unpatched SC5.
10277 [Andy Polyakov <appro@fy.chalmers.se>]
10279 *) New functions sk_num, sk_value and sk_set to replace the previous macros.
10280 These are required because of the typesafe stack would otherwise break
10281 existing code. If old code used a structure member which used to be STACK
10282 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
10283 sk_num or sk_value it would produce an error because the num, data members
10284 are not present in STACK_OF. Now it just produces a warning. sk_set
10285 replaces the old method of assigning a value to sk_value
10286 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
10287 that does this will no longer work (and should use sk_set instead) but
10288 this could be regarded as a "questionable" behaviour anyway.
10291 *) Fix most of the other PKCS#7 bugs. The "experimental" code can now
10292 correctly handle encrypted S/MIME data.
10295 *) Change type of various DES function arguments from des_cblock
10296 (which means, in function argument declarations, pointer to char)
10297 to des_cblock * (meaning pointer to array with 8 char elements),
10298 which allows the compiler to do more typechecking; it was like
10299 that back in SSLeay, but with lots of ugly casts.
10301 Introduce new type const_des_cblock.
10304 *) Reorganise the PKCS#7 library and get rid of some of the more obvious
10305 problems: find RecipientInfo structure that matches recipient certificate
10306 and initialise the ASN1 structures properly based on passed cipher.
10309 *) Belatedly make the BN tests actually check the results.
10312 *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
10313 to and from BNs: it was completely broken. New compilation option
10314 NEG_PUBKEY_BUG to allow for some broken certificates that encode public
10315 key elements as negative integers.
10318 *) Reorganize and speed up MD5.
10319 [Andy Polyakov <appro@fy.chalmers.se>]
10322 [Richard Levitte <richard@levitte.org>]
10324 *) New option -out to asn1parse to allow the parsed structure to be
10325 output to a file. This is most useful when combined with the -strparse
10326 option to examine the output of things like OCTET STRINGS.
10329 *) Make SSL library a little more fool-proof by not requiring any longer
10330 that SSL_set_{accept,connect}_state be called before
10331 SSL_{accept,connect} may be used (SSL_set_..._state is omitted
10332 in many applications because usually everything *appeared* to work as
10333 intended anyway -- now it really works as intended).
10336 *) Move openssl.cnf out of lib/.
10339 *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall
10340 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
10341 -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+
10342 [Ralf S. Engelschall]
10344 *) Various fixes to the EVP and PKCS#7 code. It may now be able to
10345 handle PKCS#7 enveloped data properly.
10346 [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve]
10348 *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
10349 copying pointers. The cert_st handling is changed by this in
10350 various ways (and thus what used to be known as ctx->default_cert
10351 is now called ctx->cert, since we don't resort to s->ctx->[default_]cert
10352 any longer when s->cert does not give us what we need).
10353 ssl_cert_instantiate becomes obsolete by this change.
10354 As soon as we've got the new code right (possibly it already is?),
10355 we have solved a couple of bugs of the earlier code where s->cert
10356 was used as if it could not have been shared with other SSL structures.
10358 Note that using the SSL API in certain dirty ways now will result
10359 in different behaviour than observed with earlier library versions:
10360 Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx)
10361 does not influence s as it used to.
10363 In order to clean up things more thoroughly, inside SSL_SESSION
10364 we don't use CERT any longer, but a new structure SESS_CERT
10365 that holds per-session data (if available); currently, this is
10366 the peer's certificate chain and, for clients, the server's certificate
10367 and temporary key. CERT holds only those values that can have
10368 meaningful defaults in an SSL_CTX.
10371 *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
10372 from the internal representation. Various PKCS#7 fixes: remove some
10373 evil casts and set the enc_dig_alg field properly based on the signing
10377 *) Allow PKCS#12 password to be set from the command line or the
10378 environment. Let 'ca' get its config file name from the environment
10379 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
10383 *) Allow certificate policies extension to use an IA5STRING for the
10384 organization field. This is contrary to the PKIX definition but
10385 VeriSign uses it and IE5 only recognises this form. Document 'x509'
10389 *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
10390 without disallowing inline assembler and the like for non-pedantic builds.
10393 *) Support Borland C++ builder.
10394 [Janez Jere <jj@void.si>, modified by Ulf Möller]
10396 *) Support Mingw32.
10399 *) SHA-1 cleanups and performance enhancements.
10400 [Andy Polyakov <appro@fy.chalmers.se>]
10402 *) Sparc v8plus assembler for the bignum library.
10403 [Andy Polyakov <appro@fy.chalmers.se>]
10405 *) Accept any -xxx and +xxx compiler options in Configure.
10408 *) Update HPUX configuration.
10411 *) Add missing sk_<type>_unshift() function to safestack.h
10412 [Ralf S. Engelschall]
10414 *) New function SSL_CTX_use_certificate_chain_file that sets the
10415 "extra_cert"s in addition to the certificate. (This makes sense
10416 only for "PEM" format files, as chains as a whole are not
10420 *) Support verify_depth from the SSL API.
10421 x509_vfy.c had what can be considered an off-by-one-error:
10422 Its depth (which was not part of the external interface)
10423 was actually counting the number of certificates in a chain;
10424 now it really counts the depth.
10427 *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
10428 instead of X509err, which often resulted in confusing error
10429 messages since the error codes are not globally unique
10430 (e.g. an alleged error in ssl3_accept when a certificate
10431 didn't match the private key).
10433 *) New function SSL_CTX_set_session_id_context that allows to set a default
10434 value (so that you don't need SSL_set_session_id_context for each
10435 connection using the SSL_CTX).
10438 *) OAEP decoding bug fix.
10441 *) Support INSTALL_PREFIX for package builders, as proposed by
10445 *) New Configure options "threads" and "no-threads". For systems
10446 where the proper compiler options are known (currently Solaris
10447 and Linux), "threads" is the default.
10450 *) New script util/mklink.pl as a faster substitute for util/mklink.sh.
10453 *) Install various scripts to $(OPENSSLDIR)/misc, not to
10454 $(INSTALLTOP)/bin -- they shouldn't clutter directories
10455 such as /usr/local/bin.
10458 *) "make linux-shared" to build shared libraries.
10459 [Niels Poppe <niels@netbox.org>]
10461 *) New Configure option no-<cipher> (rsa, idea, rc5, ...).
10464 *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
10465 extension adding in x509 utility.
10468 *) Remove NOPROTO sections and error code comments.
10471 *) Partial rewrite of the DEF file generator to now parse the ANSI
10475 *) New Configure options --prefix=DIR and --openssldir=DIR.
10478 *) Complete rewrite of the error code script(s). It is all now handled
10479 by one script at the top level which handles error code gathering,
10480 header rewriting and C source file generation. It should be much better
10481 than the old method: it now uses a modified version of Ulf's parser to
10482 read the ANSI prototypes in all header files (thus the old K&R definitions
10483 aren't needed for error creation any more) and do a better job of
10484 translating function codes into names. The old 'ASN1 error code imbedded
10485 in a comment' is no longer necessary and it doesn't use .err files which
10486 have now been deleted. Also the error code call doesn't have to appear all
10487 on one line (which resulted in some large lines...).
10490 *) Change #include filenames from <foo.h> to <openssl/foo.h>.
10493 *) Change behaviour of ssl2_read when facing length-0 packets: Don't return
10494 0 (which usually indicates a closed connection), but continue reading.
10497 *) Fix some race conditions.
10500 *) Add support for CRL distribution points extension. Add Certificate
10501 Policies and CRL distribution points documentation.
10504 *) Move the autogenerated header file parts to crypto/opensslconf.h.
10507 *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
10508 8 of keying material. Merlin has also confirmed interop with this fix
10509 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
10510 [Merlin Hughes <merlin@baltimore.ie>]
10512 *) Fix lots of warnings.
10513 [Richard Levitte <levitte@stacken.kth.se>]
10515 *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
10516 the directory spec didn't end with a LIST_SEPARATOR_CHAR.
10517 [Richard Levitte <levitte@stacken.kth.se>]
10519 *) Fix problems with sizeof(long) == 8.
10520 [Andy Polyakov <appro@fy.chalmers.se>]
10522 *) Change functions to ANSI C.
10525 *) Fix typos in error codes.
10526 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller]
10528 *) Remove defunct assembler files from Configure.
10531 *) SPARC v8 assembler BIGNUM implementation.
10532 [Andy Polyakov <appro@fy.chalmers.se>]
10534 *) Support for Certificate Policies extension: both print and set.
10535 Various additions to support the r2i method this uses.
10538 *) A lot of constification, and fix a bug in X509_NAME_oneline() that could
10539 return a const string when you are expecting an allocated buffer.
10542 *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
10543 types DirectoryString and DisplayText.
10546 *) Add code to allow r2i extensions to access the configuration database,
10547 add an LHASH database driver and add several ctx helper functions.
10550 *) Fix an evil bug in bn_expand2() which caused various BN functions to
10551 fail when they extended the size of a BIGNUM.
10554 *) Various utility functions to handle SXNet extension. Modify mkdef.pl to
10555 support typesafe stack.
10558 *) Fix typo in SSL_[gs]et_options().
10559 [Nils Frostberg <nils@medcom.se>]
10561 *) Delete various functions and files that belonged to the (now obsolete)
10562 old X509V3 handling code.
10565 *) New Configure option "rsaref".
10568 *) Don't auto-generate pem.h.
10571 *) Introduce type-safe ASN.1 SETs.
10574 *) Convert various additional casted stacks to type-safe STACK_OF() variants.
10575 [Ben Laurie, Ralf S. Engelschall, Steve Henson]
10577 *) Introduce type-safe STACKs. This will almost certainly break lots of code
10578 that links with OpenSSL (well at least cause lots of warnings), but fear
10579 not: the conversion is trivial, and it eliminates loads of evil casts. A
10580 few STACKed things have been converted already. Feel free to convert more.
10581 In the fullness of time, I'll do away with the STACK type altogether.
10584 *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate
10585 specified in <certfile> by updating the entry in the index.txt file.
10586 This way one no longer has to edit the index.txt file manually for
10587 revoking a certificate. The -revoke option does the gory details now.
10588 [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall]
10590 *) Fix `openssl crl -noout -text' combination where `-noout' killed the
10591 `-text' option at all and this way the `-noout -text' combination was
10592 inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'.
10593 [Ralf S. Engelschall]
10595 *) Make sure a corresponding plain text error message exists for the
10596 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
10597 verify callback function determined that a certificate was revoked.
10598 [Ralf S. Engelschall]
10600 *) Bugfix: In test/testenc, don't test "openssl <cipher>" for
10601 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test
10602 all available cipers including rc5, which was forgotten until now.
10603 In order to let the testing shell script know which algorithms
10604 are available, a new (up to now undocumented) command
10605 "openssl list-cipher-commands" is used.
10608 *) Bugfix: s_client occasionally would sleep in select() when
10609 it should have checked SSL_pending() first.
10612 *) New functions DSA_do_sign and DSA_do_verify to provide access to
10613 the raw DSA values prior to ASN.1 encoding.
10616 *) Tweaks to Configure
10617 [Niels Poppe <niels@netbox.org>]
10619 *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
10623 *) New variables $(RANLIB) and $(PERL) in the Makefiles.
10626 *) New config option to avoid instructions that are illegal on the 80386.
10627 The default code is faster, but requires at least a 486.
10630 *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
10631 SSL2_SERVER_VERSION (not used at all) macros, which are now the
10632 same as SSL2_VERSION anyway.
10635 *) New "-showcerts" option for s_client.
10638 *) Still more PKCS#12 integration. Add pkcs12 application to openssl
10639 application. Various cleanups and fixes.
10642 *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
10643 modify error routines to work internally. Add error codes and PBE init
10644 to library startup routines.
10647 *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and
10648 packing functions to asn1 and evp. Changed function names and error
10649 codes along the way.
10652 *) PKCS12 integration: and so it begins... First of several patches to
10653 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
10654 objects to objects.h
10657 *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1
10658 and display support for Thawte strong extranet extension.
10661 *) Add LinuxPPC support.
10662 [Jeff Dubrule <igor@pobox.org>]
10664 *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
10665 bn_div_words in alpha.s.
10666 [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie]
10668 *) Make sure the RSA OAEP test is skipped under -DRSAref because
10669 OAEP isn't supported when OpenSSL is built with RSAref.
10670 [Ulf Moeller <ulf@fitug.de>]
10672 *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
10673 so they no longer are missing under -DNOPROTO.
10674 [Soren S. Jorvang <soren@t.dk>]
10677 Changes between 0.9.1c and 0.9.2b [22 Mar 1999]
10679 *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
10680 doesn't work when the session is reused. Coming soon!
10683 *) Fix a security hole, that allows sessions to be reused in the wrong
10684 context thus bypassing client cert protection! All software that uses
10685 client certs and session caches in multiple contexts NEEDS PATCHING to
10686 allow session reuse! A fuller solution is in the works.
10687 [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)]
10689 *) Some more source tree cleanups (removed obsolete files
10690 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
10691 permission on "config" script to be executable) and a fix for the INSTALL
10693 [Ulf Moeller <ulf@fitug.de>]
10695 *) Remove some legacy and erroneous uses of malloc, free instead of
10697 [Lennart Bang <lob@netstream.se>, with minor changes by Steve]
10699 *) Make rsa_oaep_test return non-zero on error.
10700 [Ulf Moeller <ulf@fitug.de>]
10702 *) Add support for native Solaris shared libraries. Configure
10703 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
10704 if someone would make that last step automatic.
10705 [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>]
10707 *) ctx_size was not built with the right compiler during "make links". Fixed.
10710 *) Change the meaning of 'ALL' in the cipher list. It now means "everything
10711 except NULL ciphers". This means the default cipher list will no longer
10712 enable NULL ciphers. They need to be specifically enabled e.g. with
10713 the string "DEFAULT:eNULL".
10716 *) Fix to RSA private encryption routines: if p < q then it would
10717 occasionally produce an invalid result. This will only happen with
10718 externally generated keys because OpenSSL (and SSLeay) ensure p > q.
10721 *) Be less restrictive and allow also `perl util/perlpath.pl
10722 /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin',
10723 because this way one can also use an interpreter named `perl5' (which is
10724 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
10725 installed as `perl').
10726 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
10728 *) Let util/clean-depend.pl work also with older Perl 5.00x versions.
10729 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
10731 *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
10732 advapi32.lib to Win32 build and change the pem test comparison
10733 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
10734 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
10735 and crypto/des/ede_cbcm_enc.c.
10738 *) DES quad checksum was broken on big-endian architectures. Fixed.
10741 *) Comment out two functions in bio.h that aren't implemented. Fix up the
10742 Win32 test batch file so it (might) work again. The Win32 test batch file
10743 is horrible: I feel ill....
10746 *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
10747 in e_os.h. Audit of header files to check ANSI and non ANSI
10748 sections: 10 functions were absent from non ANSI section and not exported
10749 from Windows DLLs. Fixed up libeay.num for new functions.
10752 *) Make `openssl version' output lines consistent.
10753 [Ralf S. Engelschall]
10755 *) Fix Win32 symbol export lists for BIO functions: Added
10756 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
10757 to ms/libeay{16,32}.def.
10758 [Ralf S. Engelschall]
10760 *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
10761 fine under Unix and passes some trivial tests I've now added. But the
10762 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
10763 added to make sure no one expects that this stuff really works in the
10764 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources
10765 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
10767 [Ralf S. Engelschall]
10769 *) Fix the generation of two part addresses in perl.
10770 [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie]
10772 *) Add config entry for Linux on MIPS.
10773 [John Tobey <jtobey@channel1.com>]
10775 *) Make links whenever Configure is run, unless we are on Windoze.
10778 *) Permit extensions to be added to CRLs using crl_section in openssl.cnf.
10779 Currently only issuerAltName and AuthorityKeyIdentifier make any sense
10783 *) Add a useful kludge to allow package maintainers to specify compiler and
10784 other platforms details on the command line without having to patch the
10785 Configure script everytime: One now can use ``perl Configure
10786 <id>:<details>'', i.e. platform ids are allowed to have details appended
10787 to them (separated by colons). This is treated as there would be a static
10788 pre-configured entry in Configure's %table under key <id> with value
10789 <details> and ``perl Configure <id>'' is called. So, when you want to
10790 perform a quick test-compile under FreeBSD 3.1 with pgcc and without
10791 assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"''
10792 now, which overrides the FreeBSD-elf entry on-the-fly.
10793 [Ralf S. Engelschall]
10795 *) Disable new TLS1 ciphersuites by default: they aren't official yet.
10798 *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
10799 on the `perl Configure ...' command line. This way one can compile
10800 OpenSSL libraries with Position Independent Code (PIC) which is needed
10801 for linking it into DSOs.
10802 [Ralf S. Engelschall]
10804 *) Remarkably, export ciphers were totally broken and no-one had noticed!
10808 *) Cleaned up the LICENSE document: The official contact for any license
10809 questions now is the OpenSSL core team under openssl-core@openssl.org.
10810 And add a paragraph about the dual-license situation to make sure people
10811 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
10812 to the OpenSSL toolkit.
10813 [Ralf S. Engelschall]
10815 *) General source tree makefile cleanups: Made `making xxx in yyy...'
10816 display consistent in the source tree and replaced `/bin/rm' by `rm'.
10817 Additionally cleaned up the `make links' target: Remove unnecessary
10818 semicolons, subsequent redundant removes, inline point.sh into mklink.sh
10819 to speed processing and no longer clutter the display with confusing
10820 stuff. Instead only the actually done links are displayed.
10821 [Ralf S. Engelschall]
10823 *) Permit null encryption ciphersuites, used for authentication only. It used
10824 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
10825 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
10829 *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
10830 signed attributes when verifying signatures (this would break them),
10831 the detached data encoding was wrong and public keys obtained using
10832 X509_get_pubkey() weren't freed.
10835 *) Add text documentation for the BUFFER functions. Also added a work around
10836 to a Win95 console bug. This was triggered by the password read stuff: the
10837 last character typed gets carried over to the next fread(). If you were
10838 generating a new cert request using 'req' for example then the last
10839 character of the passphrase would be CR which would then enter the first
10843 *) Added the new `Includes OpenSSL Cryptography Software' button as
10844 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
10845 button and can be used by applications based on OpenSSL to show the
10846 relationship to the OpenSSL project.
10847 [Ralf S. Engelschall]
10849 *) Remove confusing variables in function signatures in files
10850 ssl/ssl_lib.c and ssl/ssl.h.
10851 [Lennart Bong <lob@kulthea.stacken.kth.se>]
10853 *) Don't install bss_file.c under PREFIX/include/
10854 [Lennart Bong <lob@kulthea.stacken.kth.se>]
10856 *) Get the Win32 compile working again. Modify mkdef.pl so it can handle
10857 functions that return function pointers and has support for NT specific
10858 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
10859 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
10860 unsigned to signed types: this was killing the Win32 compile.
10863 *) Add new certificate file to stack functions,
10864 SSL_add_dir_cert_subjects_to_stack() and
10865 SSL_add_file_cert_subjects_to_stack(). These largely supplant
10866 SSL_load_client_CA_file(), and can be used to add multiple certs easily
10867 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
10868 This means that Apache-SSL and similar packages don't have to mess around
10869 to add as many CAs as they want to the preferred list.
10872 *) Experiment with doxygen documentation. Currently only partially applied to
10874 See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with
10875 openssl.doxy as the configuration file.
10878 *) Get rid of remaining C++-style comments which strict C compilers hate.
10879 [Ralf S. Engelschall, pointed out by Carlos Amengual]
10881 *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
10882 compiled in by default: it has problems with large keys.
10885 *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
10886 DH private keys and/or callback functions which directly correspond to
10887 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
10888 is needed for applications which have to configure certificates on a
10889 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
10891 For the RSA certificate situation is makes no difference, but
10892 for the DSA certificate situation this fixes the "no shared cipher"
10893 problem where the OpenSSL cipher selection procedure failed because the
10894 temporary keys were not overtaken from the context and the API provided
10895 no way to reconfigure them.
10896 The new functions now let applications reconfigure the stuff and they
10897 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
10898 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new
10899 non-public-API function ssl_cert_instantiate() is used as a helper
10900 function and also to reduce code redundancy inside ssl_rsa.c.
10901 [Ralf S. Engelschall]
10903 *) Move s_server -dcert and -dkey options out of the undocumented feature
10904 area because they are useful for the DSA situation and should be
10905 recognized by the users.
10906 [Ralf S. Engelschall]
10908 *) Fix the cipher decision scheme for export ciphers: the export bits are
10909 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
10910 SSL_EXP_MASK. So, the original variable has to be used instead of the
10911 already masked variable.
10912 [Richard Levitte <levitte@stacken.kth.se>]
10914 *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c
10915 [Richard Levitte <levitte@stacken.kth.se>]
10917 *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
10918 from `int' to `unsigned int' because it's a length and initialized by
10919 EVP_DigestFinal() which expects an `unsigned int *'.
10920 [Richard Levitte <levitte@stacken.kth.se>]
10922 *) Don't hard-code path to Perl interpreter on shebang line of Configure
10923 script. Instead use the usual Shell->Perl transition trick.
10924 [Ralf S. Engelschall]
10926 *) Make `openssl x509 -noout -modulus' functional also for DSA certificates
10927 (in addition to RSA certificates) to match the behaviour of `openssl dsa
10928 -noout -modulus' as it's already the case for `openssl rsa -noout
10929 -modulus'. For RSA the -modulus is the real "modulus" while for DSA
10930 currently the public key is printed (a decision which was already done by
10931 `openssl dsa -modulus' in the past) which serves a similar purpose.
10932 Additionally the NO_RSA no longer completely removes the whole -modulus
10933 option; it now only avoids using the RSA stuff. Same applies to NO_DSA
10935 [Ralf S. Engelschall]
10937 *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
10938 BIO. See the source (crypto/evp/bio_ok.c) for more info.
10939 [Arne Ansper <arne@ats.cyber.ee>]
10941 *) Dump the old yucky req code that tried (and failed) to allow raw OIDs
10942 to be added. Now both 'req' and 'ca' can use new objects defined in the
10946 *) Add cool BIO that does syslog (or event log on NT).
10947 [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie]
10949 *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
10950 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
10951 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
10952 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
10955 *) Add preliminary config info for new extension code.
10958 *) Make RSA_NO_PADDING really use no padding.
10959 [Ulf Moeller <ulf@fitug.de>]
10961 *) Generate errors when private/public key check is done.
10964 *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
10965 for some CRL extensions and new objects added.
10968 *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private
10969 key usage extension and fuller support for authority key id.
10972 *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
10973 padding method for RSA, which is recommended for new applications in PKCS
10974 #1 v2.0 (RFC 2437, October 1998).
10975 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
10976 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
10977 against Bleichbacher's attack on RSA.
10978 [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
10981 *) Updates to the new SSL compression code
10982 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
10984 *) Fix so that the version number in the master secret, when passed
10985 via RSA, checks that if TLS was proposed, but we roll back to SSLv3
10986 (because the server will not accept higher), that the version number
10987 is 0x03,0x01, not 0x03,0x00
10988 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
10990 *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
10991 leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
10992 in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
10995 *) Support for RAW extensions where an arbitrary extension can be
10996 created by including its DER encoding. See apps/openssl.cnf for
11000 *) Make sure latest Perl versions don't interpret some generated C array
11001 code as Perl array code in the crypto/err/err_genc.pl script.
11002 [Lars Weber <3weber@informatik.uni-hamburg.de>]
11004 *) Modify ms/do_ms.bat to not generate assembly language makefiles since
11005 not many people have the assembler. Various Win32 compilation fixes and
11006 update to the INSTALL.W32 file with (hopefully) more accurate Win32
11007 build instructions.
11010 *) Modify configure script 'Configure' to automatically create crypto/date.h
11011 file under Win32 and also build pem.h from pem.org. New script
11012 util/mkfiles.pl to create the MINFO file on environments that can't do a
11013 'make files': perl util/mkfiles.pl >MINFO should work.
11016 *) Major rework of DES function declarations, in the pursuit of correctness
11017 and purity. As a result, many evil casts evaporated, and some weirdness,
11018 too. You may find this causes warnings in your code. Zapping your evil
11019 casts will probably fix them. Mostly.
11022 *) Fix for a typo in asn1.h. Bug fix to object creation script
11023 obj_dat.pl. It considered a zero in an object definition to mean
11024 "end of object": none of the objects in objects.h have any zeros
11025 so it wasn't spotted.
11026 [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>]
11028 *) Add support for Triple DES Cipher Block Chaining with Output Feedback
11029 Masking (CBCM). In the absence of test vectors, the best I have been able
11030 to do is check that the decrypt undoes the encrypt, so far. Send me test
11031 vectors if you have them.
11034 *) Correct calculation of key length for export ciphers (too much space was
11035 allocated for null ciphers). This has not been tested!
11038 *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage
11039 message is now correct (it understands "crypto" and "ssl" on its
11040 command line). There is also now an "update" option. This will update
11041 the util/ssleay.num and util/libeay.num files with any new functions.
11043 perl util/mkdef.pl crypto ssl update
11044 it will update them.
11047 *) Overhauled the Perl interface (perl/*):
11048 - ported BN stuff to OpenSSL's different BN library
11049 - made the perl/ source tree CVS-aware
11050 - renamed the package from SSLeay to OpenSSL (the files still contain
11051 their history because I've copied them in the repository)
11052 - removed obsolete files (the test scripts will be replaced
11053 by better Test::Harness variants in the future)
11054 [Ralf S. Engelschall]
11056 *) First cut for a very conservative source tree cleanup:
11057 1. merge various obsolete readme texts into doc/ssleay.txt
11058 where we collect the old documents and readme texts.
11059 2. remove the first part of files where I'm already sure that we no
11060 longer need them because of three reasons: either they are just temporary
11061 files which were left by Eric or they are preserved original files where
11062 I've verified that the diff is also available in the CVS via "cvs diff
11063 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
11064 the crypto/md/ stuff).
11065 [Ralf S. Engelschall]
11067 *) More extension code. Incomplete support for subject and issuer alt
11068 name, issuer and authority key id. Change the i2v function parameters
11069 and add an extra 'crl' parameter in the X509V3_CTX structure: guess
11070 what that's for :-) Fix to ASN1 macro which messed up
11071 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
11074 *) Preliminary support for ENUMERATED type. This is largely copied from the
11078 *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
11079 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
11081 *) Make sure `make rehash' target really finds the `openssl' program.
11082 [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
11084 *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
11085 like to hear about it if this slows down other processors.
11088 *) Add CygWin32 platform information to Configure script.
11089 [Alan Batie <batie@aahz.jf.intel.com>]
11091 *) Fixed ms/32all.bat script: `no_asm' -> `no-asm'
11092 [Rainer W. Gerling <gerling@mpg-gv.mpg.de>]
11094 *) New program nseq to manipulate netscape certificate sequences
11097 *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
11101 *) Fixes to BN code. Previously the default was to define BN_RECURSION
11102 but the BN code had some problems that would cause failures when
11103 doing certificate verification and some other functions.
11104 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
11106 *) Add ASN1 and PEM code to support netscape certificate sequences.
11109 *) Add ASN1 and PEM code to support netscape certificate sequences.
11112 *) Add several PKIX and private extended key usage OIDs.
11115 *) Modify the 'ca' program to handle the new extension code. Modify
11116 openssl.cnf for new extension format, add comments.
11119 *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
11120 and add a sample to openssl.cnf so req -x509 now adds appropriate
11124 *) Continued X509 V3 changes. Add to other makefiles, integrate with the
11125 error code, add initial support to X509_print() and x509 application.
11128 *) Takes a deep breath and start adding X509 V3 extension support code. Add
11129 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
11130 stuff is currently isolated and isn't even compiled yet.
11133 *) Continuing patches for GeneralizedTime. Fix up certificate and CRL
11134 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
11135 Removed the versions check from X509 routines when loading extensions:
11136 this allows certain broken certificates that don't set the version
11137 properly to be processed.
11140 *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
11141 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
11142 can still be regenerated with "make depend".
11145 *) Spelling mistake in C version of CAST-128.
11146 [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>]
11148 *) Changes to the error generation code. The perl script err-code.pl
11149 now reads in the old error codes and retains the old numbers, only
11150 adding new ones if necessary. It also only changes the .err files if new
11151 codes are added. The makefiles have been modified to only insert errors
11152 when needed (to avoid needlessly modifying header files). This is done
11153 by only inserting errors if the .err file is newer than the auto generated
11154 C file. To rebuild all the error codes from scratch (the old behaviour)
11155 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
11156 or delete all the .err files.
11159 *) CAST-128 was incorrectly implemented for short keys. The C version has
11160 been fixed, but is untested. The assembler versions are also fixed, but
11161 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
11162 to regenerate it if needed.
11163 [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
11164 Hagino <itojun@kame.net>]
11166 *) File was opened incorrectly in randfile.c.
11167 [Ulf Möller <ulf@fitug.de>]
11169 *) Beginning of support for GeneralizedTime. d2i, i2d, check and print
11170 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
11171 GeneralizedTime. ASN1_TIME is the proper type used in certificates et
11172 al: it's just almost always a UTCTime. Note this patch adds new error
11173 codes so do a "make errors" if there are problems.
11176 *) Correct Linux 1 recognition in config.
11177 [Ulf Möller <ulf@fitug.de>]
11179 *) Remove pointless MD5 hash when using DSA keys in ca.
11180 [Anonymous <nobody@replay.com>]
11182 *) Generate an error if given an empty string as a cert directory. Also
11183 generate an error if handed NULL (previously returned 0 to indicate an
11184 error, but didn't set one).
11185 [Ben Laurie, reported by Anonymous <nobody@replay.com>]
11187 *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
11190 *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
11191 parameters. This was causing a warning which killed off the Win32 compile.
11194 *) Remove C++ style comments from crypto/bn/bn_local.h.
11195 [Neil Costigan <neil.costigan@celocom.com>]
11197 *) The function OBJ_txt2nid was broken. It was supposed to return a nid
11198 based on a text string, looking up short and long names and finally
11199 "dot" format. The "dot" format stuff didn't work. Added new function
11200 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
11201 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
11202 OID is not part of the table.
11205 *) Add prototypes to X509 lookup/verify methods, fixing a bug in
11206 X509_LOOKUP_by_alias().
11209 *) Sort openssl functions by name.
11212 *) Get the gendsa program working (hopefully) and add it to app list. Remove
11213 encryption from sample DSA keys (in case anyone is interested the password
11217 *) Make _all_ *_free functions accept a NULL pointer.
11218 [Frans Heymans <fheymans@isaserver.be>]
11220 *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use
11222 [Anonymous <nobody@replay.com>]
11224 *) s_server should send the CAfile as acceptable CAs, not its own cert.
11225 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
11227 *) Don't blow it for numeric -newkey arguments to apps/req.
11228 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
11230 *) Temp key "for export" tests were wrong in s3_srvr.c.
11231 [Anonymous <nobody@replay.com>]
11233 *) Add prototype for temp key callback functions
11234 SSL_CTX_set_tmp_{rsa,dh}_callback().
11237 *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
11238 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
11241 *) X509_name_add_entry() freed the wrong thing after an error.
11242 [Arne Ansper <arne@ats.cyber.ee>]
11244 *) rsa_eay.c would attempt to free a NULL context.
11245 [Arne Ansper <arne@ats.cyber.ee>]
11247 *) BIO_s_socket() had a broken should_retry() on Windoze.
11248 [Arne Ansper <arne@ats.cyber.ee>]
11250 *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
11251 [Arne Ansper <arne@ats.cyber.ee>]
11253 *) Make sure the already existing X509_STORE->depth variable is initialized
11254 in X509_STORE_new(), but document the fact that this variable is still
11255 unused in the certificate verification process.
11256 [Ralf S. Engelschall]
11258 *) Fix the various library and apps files to free up pkeys obtained from
11259 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
11262 *) Fix reference counting in X509_PUBKEY_get(). This makes
11263 demos/maurice/example2.c work, amongst others, probably.
11264 [Steve Henson and Ben Laurie]
11266 *) First cut of a cleanup for apps/. First the `ssleay' program is now named
11267 `openssl' and second, the shortcut symlinks for the `openssl <command>'
11268 are no longer created. This way we have a single and consistent command
11269 line interface `openssl <command>', similar to `cvs <command>'.
11270 [Ralf S. Engelschall, Paul Sutton and Ben Laurie]
11272 *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
11273 BIT STRING wrapper always have zero unused bits.
11276 *) Add CA.pl, perl version of CA.sh, add extended key usage OID.
11279 *) Make the top-level INSTALL documentation easier to understand.
11282 *) Makefiles updated to exit if an error occurs in a sub-directory
11283 make (including if user presses ^C) [Paul Sutton]
11285 *) Make Montgomery context stuff explicit in RSA data structure.
11288 *) Fix build order of pem and err to allow for generated pem.h.
11291 *) Fix renumbering bug in X509_NAME_delete_entry().
11294 *) Enhanced the err-ins.pl script so it makes the error library number
11295 global and can add a library name. This is needed for external ASN1 and
11296 other error libraries.
11299 *) Fixed sk_insert which never worked properly.
11302 *) Fix ASN1 macros so they can handle indefinite length constructed
11303 EXPLICIT tags. Some non standard certificates use these: they can now
11307 *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
11308 into a single doc/ssleay.txt bundle. This way the information is still
11309 preserved but no longer messes up this directory. Now it's new room for
11310 the new set of documentation files.
11311 [Ralf S. Engelschall]
11313 *) SETs were incorrectly DER encoded. This was a major pain, because they
11314 shared code with SEQUENCEs, which aren't coded the same. This means that
11315 almost everything to do with SETs or SEQUENCEs has either changed name or
11316 number of arguments.
11317 [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>]
11319 *) Fix test data to work with the above.
11322 *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
11323 was already fixed by Eric for 0.9.1 it seems.
11324 [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>]
11326 *) Autodetect FreeBSD3.
11329 *) Fix various bugs in Configure. This affects the following platforms:
11333 unixware-2.0-pentium
11337 *) Eliminate generated files from CVS. Reorder tests to regenerate files
11338 before they are needed.
11341 *) Generate Makefile.ssl from Makefile.org (to keep CVS happy).
11345 Changes between 0.9.1b and 0.9.1c [23-Dec-1998]
11347 *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
11348 changed SSLeay to OpenSSL in version strings.
11349 [Ralf S. Engelschall]
11351 *) Some fixups to the top-level documents.
11354 *) Fixed the nasty bug where rsaref.h was not found under compile-time
11355 because the symlink to include/ was missing.
11356 [Ralf S. Engelschall]
11358 *) Incorporated the popular no-RSA/DSA-only patches
11359 which allow to compile a RSA-free SSLeay.
11360 [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall]
11362 *) Fixed nasty rehash problem under `make -f Makefile.ssl links'
11363 when "ssleay" is still not found.
11364 [Ralf S. Engelschall]
11366 *) Added more platforms to Configure: Cray T3E, HPUX 11,
11367 [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>]
11369 *) Updated the README file.
11370 [Ralf S. Engelschall]
11372 *) Added various .cvsignore files in the CVS repository subdirs
11373 to make a "cvs update" really silent.
11374 [Ralf S. Engelschall]
11376 *) Recompiled the error-definition header files and added
11377 missing symbols to the Win32 linker tables.
11378 [Ralf S. Engelschall]
11380 *) Cleaned up the top-level documents;
11381 o new files: CHANGES and LICENSE
11382 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
11383 o merged COPYRIGHT into LICENSE
11384 o removed obsolete TODO file
11385 o renamed MICROSOFT to INSTALL.W32
11386 [Ralf S. Engelschall]
11388 *) Removed dummy files from the 0.9.1b source tree:
11389 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
11390 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
11391 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
11392 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
11393 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
11394 [Ralf S. Engelschall]
11396 *) Added various platform portability fixes.
11399 *) The Genesis of the OpenSSL rpject:
11400 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
11401 Young and Tim J. Hudson created while they were working for C2Net until
11403 [The OpenSSL Project]
11406 Changes between 0.9.0b and 0.9.1b [not released]
11408 *) Updated a few CA certificates under certs/
11411 *) Changed some BIGNUM api stuff.
11414 *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
11415 DGUX x86, Linux Alpha, etc.
11418 *) New COMP library [crypto/comp/] for SSL Record Layer Compression:
11419 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
11423 *) Add -strparse option to asn1pars program which parses nested
11425 [Dr Stephen Henson <shenson@bigfoot.com>]
11427 *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
11430 *) DSA fix for "ca" program.
11433 *) Added "-genkey" option to "dsaparam" program.
11436 *) Added RIPE MD160 (rmd160) message digest.
11439 *) Added -a (all) option to "ssleay version" command.
11442 *) Added PLATFORM define which is the id given to Configure.
11445 *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
11448 *) Extended the ASN.1 parser routines.
11451 *) Extended BIO routines to support REUSEADDR, seek, tell, etc.
11454 *) Added a BN_CTX to the BN library.
11457 *) Fixed the weak key values in DES library
11460 *) Changed API in EVP library for cipher aliases.
11463 *) Added support for RC2/64bit cipher.
11466 *) Converted the lhash library to the crypto/mem.c functions.
11469 *) Added more recognized ASN.1 object ids.
11472 *) Added more RSA padding checks for SSL/TLS.
11475 *) Added BIO proxy/filter functionality.
11478 *) Added extra_certs to SSL_CTX which can be used
11479 send extra CA certificates to the client in the CA cert chain sending
11480 process. It can be configured with SSL_CTX_add_extra_chain_cert().
11483 *) Now Fortezza is denied in the authentication phase because
11484 this is key exchange mechanism is not supported by SSLeay at all.
11487 *) Additional PKCS1 checks.
11490 *) Support the string "TLSv1" for all TLS v1 ciphers.
11493 *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
11494 ex_data index of the SSL context in the X509_STORE_CTX ex_data.
11497 *) Fixed a few memory leaks.
11500 *) Fixed various code and comment typos.
11503 *) A minor bug in ssl/s3_clnt.c where there would always be 4 0
11504 bytes sent in the client random.
11505 [Edward Bishop <ebishop@spyglass.com>]