5 Changes between 1.0.2 and 1.1.0 [xx XXX xxxx]
7 *) The demo files in crypto/threads were moved to demo/threads.
10 *) Removed obsolete engines: 4758cca, aep, atalla, cswift, nuron and sureware.
13 *) New ASN.1 embed macro.
15 New ASN.1 macro ASN1_EMBED. This is the same as ASN1_SIMPLE except the
16 structure is not allocated: it is part of the parent. That is instead of
24 This reduces memory fragmentation and make it impossible to accidentally
25 set a mandatory field to NULL.
27 This currently only works for some fields specifically a SEQUENCE, CHOICE,
28 or ASN1_STRING type which is part of a parent SEQUENCE. Since it is
29 equivalent to ASN1_SIMPLE it cannot be tagged, OPTIONAL, SET OF or
33 *) Remove EVP_CHECK_DES_KEY, a compile-time option that never compiled.
36 *) Removed DES and RC4 ciphersuites from DEFAULT. Also removed RC2 although
37 in 1.0.2 EXPORT was already removed and the only RC2 ciphersuite is also
38 an EXPORT one. COMPLEMENTOFDEFAULT has been updated accordingly to add
39 DES and RC4 ciphersuites.
42 *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
43 This changes the decoding behaviour for some invalid messages,
44 though the change is mostly in the more lenient direction, and
45 legacy behaviour is preserved as much as possible.
47 *) Fix no-stdio build.
48 [ David Woodhouse <David.Woodhouse@intel.com> and also
49 Ivan Nestlerode <ivan.nestlerode@sonos.com> ]
50 *) New testing framework
51 The testing framework has been largely rewritten and is now using
52 perl and the perl modules Test::Harness and an extended variant of
53 Test::More called OpenSSL::Test to do its work. All test scripts in
54 test/ have been rewritten into test recipes, and all direct calls to
55 executables in test/Makefile have become individual recipes using the
56 simplified testing OpenSSL::Test::Simple.
58 For documentation on our testing modules, do:
60 perldoc test/testlib/OpenSSL/Test/Simple.pm
61 perldoc test/testlib/OpenSSL/Test.pm
65 *) In DSA_generate_parameters_ex, if the provided seed is too short,
67 [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>]
69 *) Rewrite PSK to support ECDHE_PSK, DHE_PSK and RSA_PSK. Add ciphersuites
70 from RFC4279, RFC4785, RFC5487, RFC5489.
72 Thanks to Christian J. Dietrich and Giuseppe D'Angelo for the
73 original RSA_PSK patch.
76 *) Dropped support for the SSL3_FLAGS_DELAY_CLIENT_FINISHED flag. This SSLeay
77 era flag was never set throughout the codebase (only read). Also removed
78 SSL3_FLAGS_POP_BUFFER which was only used if
79 SSL3_FLAGS_DELAY_CLIENT_FINISHED was also set.
82 *) Changed the default name options in the "ca", "crl", "req" and "x509"
83 to be "oneline" instead of "compat".
86 *) Remove SSL_OP_TLS_BLOCK_PADDING_BUG. This is SSLeay legacy, we're
87 not aware of clients that still exhibit this bug, and the workaround
88 hasn't been working properly for a while.
91 *) The return type of BIO_number_read() and BIO_number_written() as well as
92 the corresponding num_read and num_write members in the BIO structure has
93 changed from unsigned long to uint64_t. On platforms where an unsigned
94 long is 32 bits (e.g. Windows) these counters could overflow if >4Gb is
98 *) Given the pervasive nature of TLS extensions it is inadvisable to run
99 OpenSSL without support for them. It also means that maintaining
100 the OPENSSL_NO_TLSEXT option within the code is very invasive (and probably
101 not well tested). Therefore the OPENSSL_NO_TLSEXT option has been removed.
104 *) Removed support for the two export grade static DH ciphersuites
105 EXP-DH-RSA-DES-CBC-SHA and EXP-DH-DSS-DES-CBC-SHA. These two ciphersuites
106 were newly added (along with a number of other static DH ciphersuites) to
107 1.0.2. However the two export ones have *never* worked since they were
108 introduced. It seems strange in any case to be adding new export
109 ciphersuites, and given "logjam" it also does not seem correct to fix them.
112 *) Version negotiation has been rewritten. In particular SSLv23_method(),
113 SSLv23_client_method() and SSLv23_server_method() have been deprecated,
114 and turned into macros which simply call the new preferred function names
115 TLS_method(), TLS_client_method() and TLS_server_method(). All new code
116 should use the new names instead. Also as part of this change the ssl23.h
117 header file has been removed.
120 *) Support for Kerberos ciphersuites in TLS (RFC2712) has been removed. This
121 code and the associated standard is no longer considered fit-for-purpose.
124 *) RT2547 was closed. When generating a private key, try to make the
125 output file readable only by the owner. This behavior change might
126 be noticeable when interacting with other software.
128 *) Added HTTP GET support to the ocsp command.
131 *) RAND_pseudo_bytes has been deprecated. Users should use RAND_bytes instead.
134 *) Added support for TLS extended master secret from
135 draft-ietf-tls-session-hash-03.txt. Thanks for Alfredo Pironti for an
136 initial patch which was a great help during development.
139 *) All libssl internal structures have been removed from the public header
140 files, and the OPENSSL_NO_SSL_INTERN option has been removed (since it is
141 now redundant). Users should not attempt to access internal structures
142 directly. Instead they should use the provided API functions.
145 *) config has been changed so that by default OPENSSL_NO_DEPRECATED is used.
146 Access to deprecated functions can be re-enabled by running config with
147 "enable-deprecated". In addition applications wishing to use deprecated
148 functions must define OPENSSL_USE_DEPRECATED. Note that this new behaviour
149 will, by default, disable some transitive includes that previously existed
150 in the header files (e.g. ec.h will no longer, by default, include bn.h)
153 *) Added support for OCB mode. OpenSSL has been granted a patent license
154 compatible with the OpenSSL license for use of OCB. Details are available
155 at https://www.openssl.org/docs/misc/OCB-patent-grant-OpenSSL.pdf. Support
156 for OCB can be removed by calling config with no-ocb.
159 *) SSLv2 support has been removed. It still supports receiving a SSLv2
160 compatible client hello.
163 *) Increased the minimal RSA keysize from 256 to 512 bits [Rich Salz],
164 done while fixing the error code for the key-too-small case.
165 [Annie Yousar <a.yousar@informatik.hu-berlin.de>]
167 *) CA.sh has been removmed; use CA.pl instead.
170 *) Removed old DES API.
173 *) Remove various unsupported platforms:
179 Sinix/ReliantUNIX RM400
184 16-bit platforms such as WIN16
187 *) Clean up OPENSSL_NO_xxx #define's
188 Use setbuf() and remove OPENSSL_NO_SETVBUF_IONBF
189 Rename OPENSSL_SYSNAME_xxx to OPENSSL_SYS_xxx
190 OPENSSL_NO_EC{DH,DSA} merged into OPENSSL_NO_EC
191 OPENSSL_NO_RIPEMD160, OPENSSL_NO_RIPEMD merged into OPENSSL_NO_RMD160
192 OPENSSL_NO_FP_API merged into OPENSSL_NO_STDIO
193 Remove OPENSSL_NO_BIO OPENSSL_NO_BUFFER OPENSSL_NO_CHAIN_VERIFY
194 OPENSSL_NO_EVP OPENSSL_NO_FIPS_ERR OPENSSL_NO_HASH_COMP
195 OPENSSL_NO_LHASH OPENSSL_NO_OBJECT OPENSSL_NO_SPEED OPENSSL_NO_STACK
196 OPENSSL_NO_X509 OPENSSL_NO_X509_VERIFY
197 Remove MS_STATIC; it's a relic from platforms <32 bits.
200 *) Cleaned up dead code
201 Remove all but one '#ifdef undef' which is to be looked at.
204 *) Clean up calling of xxx_free routines.
205 Just like free(), fix most of the xxx_free routines to accept
206 NULL. Remove the non-null checks from callers. Save much code.
209 *) Add secure heap for storage of private keys (when possible).
210 Add BIO_s_secmem(), CBIGNUM, etc.
211 Contributed by Akamai Technologies under our Corporate CLA.
214 *) Experimental support for a new, fast, unbiased prime candidate generator,
215 bn_probable_prime_dh_coprime(). Not currently used by any prime generator.
216 [Felix Laurie von Massenbach <felix@erbridge.co.uk>]
218 *) New output format NSS in the sess_id command line tool. This allows
219 exporting the session id and the master key in NSS keylog format.
220 [Martin Kaiser <martin@kaiser.cx>]
222 *) Harmonize version and its documentation. -f flag is used to display
224 [mancha <mancha1@zoho.com>]
226 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
227 in i2d_ECPrivateKey. Thanks to Ted Unangst for feedback on this issue.
228 [mancha <mancha1@zoho.com>]
230 *) Fix some double frees. These are not thought to be exploitable.
231 [mancha <mancha1@zoho.com>]
233 *) A missing bounds check in the handling of the TLS heartbeat extension
234 can be used to reveal up to 64k of memory to a connected client or
237 Thanks for Neel Mehta of Google Security for discovering this bug and to
238 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
239 preparing the fix (CVE-2014-0160)
240 [Adam Langley, Bodo Moeller]
242 *) Fix for the attack described in the paper "Recovering OpenSSL
243 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
244 by Yuval Yarom and Naomi Benger. Details can be obtained from:
245 http://eprint.iacr.org/2014/140
247 Thanks to Yuval Yarom and Naomi Benger for discovering this
248 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
249 [Yuval Yarom and Naomi Benger]
251 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
252 this fixes a limitation in previous versions of OpenSSL.
255 *) Experimental encrypt-then-mac support.
257 Experimental support for encrypt then mac from
258 draft-gutmann-tls-encrypt-then-mac-02.txt
260 To enable it set the appropriate extension number (0x42 for the test
261 server) using e.g. -DTLSEXT_TYPE_encrypt_then_mac=0x42
263 For non-compliant peers (i.e. just about everything) this should have no
266 WARNING: EXPERIMENTAL, SUBJECT TO CHANGE.
270 *) Add EVP support for key wrapping algorithms, to avoid problems with
271 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
272 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
273 algorithms and include tests cases.
276 *) Extend CMS code to support RSA-PSS signatures and RSA-OAEP for
280 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
281 MGF1 digest and OAEP label.
284 *) Make openssl verify return errors.
285 [Chris Palmer <palmer@google.com> and Ben Laurie]
287 *) New function ASN1_TIME_diff to calculate the difference between two
288 ASN1_TIME structures or one structure and the current time.
291 *) Update fips_test_suite to support multiple command line options. New
292 test to induce all self test errors in sequence and check expected
296 *) Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and
297 sign or verify all in one operation.
300 *) Add fips_algvs: a multicall fips utility incorporating all the algorithm
301 test programs and fips_test_suite. Includes functionality to parse
302 the minimal script output of fipsalgest.pl directly.
305 *) Add authorisation parameter to FIPS_module_mode_set().
308 *) Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves.
311 *) Use separate DRBG fields for internal and external flags. New function
312 FIPS_drbg_health_check() to perform on demand health checking. Add
313 generation tests to fips_test_suite with reduced health check interval to
314 demonstrate periodic health checking. Add "nodh" option to
315 fips_test_suite to skip very slow DH test.
318 *) New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers
322 *) More extensive health check for DRBG checking many more failure modes.
323 New function FIPS_selftest_drbg_all() to handle every possible DRBG
324 combination: call this in fips_test_suite.
327 *) Add support for Dual EC DRBG from SP800-90. Update DRBG algorithm test
328 and POST to handle Dual EC cases.
331 *) Add support for canonical generation of DSA parameter 'g'. See
334 *) Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
335 POST to handle HMAC cases.
338 *) Add functions FIPS_module_version() and FIPS_module_version_text()
339 to return numerical and string versions of the FIPS module number.
342 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
343 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implemented
344 outside the validated module in the FIPS capable OpenSSL.
347 *) Minor change to DRBG entropy callback semantics. In some cases
348 there is no multiple of the block length between min_len and
349 max_len. Allow the callback to return more than max_len bytes
350 of entropy but discard any extra: it is the callback's responsibility
351 to ensure that the extra data discarded does not impact the
352 requested amount of entropy.
355 *) Add PRNG security strength checks to RSA, DSA and ECDSA using
356 information in FIPS186-3, SP800-57 and SP800-131A.
359 *) CCM support via EVP. Interface is very similar to GCM case except we
360 must supply all data in one chunk (i.e. no update, final) and the
361 message length must be supplied if AAD is used. Add algorithm test
365 *) Initial version of POST overhaul. Add POST callback to allow the status
366 of POST to be monitored and/or failures induced. Modify fips_test_suite
367 to use callback. Always run all selftests even if one fails.
370 *) XTS support including algorithm test driver in the fips_gcmtest program.
371 Note: this does increase the maximum key length from 32 to 64 bytes but
372 there should be no binary compatibility issues as existing applications
373 will never use XTS mode.
376 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
377 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
378 performs algorithm blocking for unapproved PRNG types. Also do not
379 set PRNG type in FIPS_mode_set(): leave this to the application.
380 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
381 the standard OpenSSL PRNG: set additional data to a date time vector.
384 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
385 This shouldn't present any incompatibility problems because applications
386 shouldn't be using these directly and any that are will need to rethink
387 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
390 *) Extensive self tests and health checking required by SP800-90 DRBG.
391 Remove strength parameter from FIPS_drbg_instantiate and always
392 instantiate at maximum supported strength.
395 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
398 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
401 *) New function DH_compute_key_padded() to compute a DH key and pad with
402 leading zeroes if needed: this complies with SP800-56A et al.
405 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
406 anything, incomplete, subject to change and largely untested at present.
409 *) Modify fipscanisteronly build option to only build the necessary object
410 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
413 *) Add experimental option FIPSSYMS to give all symbols in
414 fipscanister.o and FIPS or fips prefix. This will avoid
415 conflicts with future versions of OpenSSL. Add perl script
416 util/fipsas.pl to preprocess assembly language source files
417 and rename any affected symbols.
420 *) Add selftest checks and algorithm block of non-fips algorithms in
421 FIPS mode. Remove DES2 from selftests.
424 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
425 return internal method without any ENGINE dependencies. Add new
426 tiny fips sign and verify functions.
429 *) New build option no-ec2m to disable characteristic 2 code.
432 *) New build option "fipscanisteronly". This only builds fipscanister.o
433 and (currently) associated fips utilities. Uses the file Makefile.fips
434 instead of Makefile.org as the prototype.
437 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
438 Update fips_gcmtest to use IV generator.
441 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
442 setting output buffer to NULL. The *Final function must be
443 called although it will not retrieve any additional data. The tag
444 can be set or retrieved with a ctrl. The IV length is by default 12
445 bytes (96 bits) but can be set to an alternative value. If the IV
446 length exceeds the maximum IV length (currently 16 bytes) it cannot be
450 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
451 underlying do_cipher function handles all cipher semantics itself
452 including padding and finalisation. This is useful if (for example)
453 an ENGINE cipher handles block padding itself. The behaviour of
454 do_cipher is subtly changed if this flag is set: the return value
455 is the number of characters written to the output buffer (zero is
456 no longer an error code) or a negative error code. Also if the
457 input buffer is NULL and length 0 finalisation should be performed.
460 *) If a candidate issuer certificate is already part of the constructed
461 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
464 *) Improve forward-security support: add functions
466 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
467 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
469 for use by SSL/TLS servers; the callback function will be called whenever a
470 new session is created, and gets to decide whether the session may be
471 cached to make it resumable (return 0) or not (return 1). (As by the
472 SSL/TLS protocol specifications, the session_id sent by the server will be
473 empty to indicate that the session is not resumable; also, the server will
474 not generate RFC 4507 (RFC 5077) session tickets.)
476 A simple reasonable callback implementation is to return is_forward_secure.
477 This parameter will be set to 1 or 0 depending on the ciphersuite selected
478 by the SSL/TLS server library, indicating whether it can provide forward
480 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
482 *) New -verify_name option in command line utilities to set verification
486 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
487 Add CMAC pkey methods.
490 *) Experimental renegotiation in s_server -www mode. If the client
491 browses /reneg connection is renegotiated. If /renegcert it is
492 renegotiated requesting a certificate.
495 *) Add an "external" session cache for debugging purposes to s_server. This
496 should help trace issues which normally are only apparent in deployed
497 multi-process servers.
500 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
501 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
502 BIO_set_cipher() and some obscure PEM functions were changed so they
503 can now return an error. The RAND changes required a change to the
504 RAND_METHOD structure.
507 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
508 a gcc attribute to warn if the result of a function is ignored. This
509 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
510 whose return value is often ignored.
513 Changes between 1.0.2c and 1.0.2d [9 Jul 2015]
515 *) Alternate chains certificate forgery
517 During certificate verfification, OpenSSL will attempt to find an
518 alternative certificate chain if the first attempt to build such a chain
519 fails. An error in the implementation of this logic can mean that an
520 attacker could cause certain checks on untrusted certificates to be
521 bypassed, such as the CA flag, enabling them to use a valid leaf
522 certificate to act as a CA and "issue" an invalid certificate.
524 This issue was reported to OpenSSL by Adam Langley/David Benjamin
528 Changes between 1.0.2b and 1.0.2c [12 Jun 2015]
530 *) Fix HMAC ABI incompatibility. The previous version introduced an ABI
531 incompatibility in the handling of HMAC. The previous ABI has now been
535 Changes between 1.0.2a and 1.0.2b [11 Jun 2015]
537 *) Malformed ECParameters causes infinite loop
539 When processing an ECParameters structure OpenSSL enters an infinite loop
540 if the curve specified is over a specially malformed binary polynomial
543 This can be used to perform denial of service against any
544 system which processes public keys, certificate requests or
545 certificates. This includes TLS clients and TLS servers with
546 client authentication enabled.
548 This issue was reported to OpenSSL by Joseph Barr-Pixton.
552 *) Exploitable out-of-bounds read in X509_cmp_time
554 X509_cmp_time does not properly check the length of the ASN1_TIME
555 string and can read a few bytes out of bounds. In addition,
556 X509_cmp_time accepts an arbitrary number of fractional seconds in the
559 An attacker can use this to craft malformed certificates and CRLs of
560 various sizes and potentially cause a segmentation fault, resulting in
561 a DoS on applications that verify certificates or CRLs. TLS clients
562 that verify CRLs are affected. TLS clients and servers with client
563 authentication enabled may be affected if they use custom verification
566 This issue was reported to OpenSSL by Robert Swiecki (Google), and
567 independently by Hanno Böck.
571 *) PKCS7 crash with missing EnvelopedContent
573 The PKCS#7 parsing code does not handle missing inner EncryptedContent
574 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs
575 with missing content and trigger a NULL pointer dereference on parsing.
577 Applications that decrypt PKCS#7 data or otherwise parse PKCS#7
578 structures from untrusted sources are affected. OpenSSL clients and
579 servers are not affected.
581 This issue was reported to OpenSSL by Michal Zalewski (Google).
585 *) CMS verify infinite loop with unknown hash function
587 When verifying a signedData message the CMS code can enter an infinite loop
588 if presented with an unknown hash function OID. This can be used to perform
589 denial of service against any system which verifies signedData messages using
591 This issue was reported to OpenSSL by Johannes Bauer.
595 *) Race condition handling NewSessionTicket
597 If a NewSessionTicket is received by a multi-threaded client when attempting to
598 reuse a previous ticket then a race condition can occur potentially leading to
599 a double free of the ticket data.
603 *) Only support 256-bit or stronger elliptic curves with the
604 'ecdh_auto' setting (server) or by default (client). Of supported
605 curves, prefer P-256 (both).
608 Changes between 1.0.2 and 1.0.2a [19 Mar 2015]
610 *) ClientHello sigalgs DoS fix
612 If a client connects to an OpenSSL 1.0.2 server and renegotiates with an
613 invalid signature algorithms extension a NULL pointer dereference will
614 occur. This can be exploited in a DoS attack against the server.
616 This issue was was reported to OpenSSL by David Ramos of Stanford
619 [Stephen Henson and Matt Caswell]
621 *) Multiblock corrupted pointer fix
623 OpenSSL 1.0.2 introduced the "multiblock" performance improvement. This
624 feature only applies on 64 bit x86 architecture platforms that support AES
625 NI instructions. A defect in the implementation of "multiblock" can cause
626 OpenSSL's internal write buffer to become incorrectly set to NULL when
627 using non-blocking IO. Typically, when the user application is using a
628 socket BIO for writing, this will only result in a failed connection.
629 However if some other BIO is used then it is likely that a segmentation
630 fault will be triggered, thus enabling a potential DoS attack.
632 This issue was reported to OpenSSL by Daniel Danner and Rainer Mueller.
636 *) Segmentation fault in DTLSv1_listen fix
638 The DTLSv1_listen function is intended to be stateless and processes the
639 initial ClientHello from many peers. It is common for user code to loop
640 over the call to DTLSv1_listen until a valid ClientHello is received with
641 an associated cookie. A defect in the implementation of DTLSv1_listen means
642 that state is preserved in the SSL object from one invocation to the next
643 that can lead to a segmentation fault. Errors processing the initial
644 ClientHello can trigger this scenario. An example of such an error could be
645 that a DTLS1.0 only client is attempting to connect to a DTLS1.2 only
648 This issue was reported to OpenSSL by Per Allansson.
652 *) Segmentation fault in ASN1_TYPE_cmp fix
654 The function ASN1_TYPE_cmp will crash with an invalid read if an attempt is
655 made to compare ASN.1 boolean types. Since ASN1_TYPE_cmp is used to check
656 certificate signature algorithm consistency this can be used to crash any
657 certificate verification operation and exploited in a DoS attack. Any
658 application which performs certificate verification is vulnerable including
659 OpenSSL clients and servers which enable client authentication.
663 *) Segmentation fault for invalid PSS parameters fix
665 The signature verification routines will crash with a NULL pointer
666 dereference if presented with an ASN.1 signature using the RSA PSS
667 algorithm and invalid parameters. Since these routines are used to verify
668 certificate signature algorithms this can be used to crash any
669 certificate verification operation and exploited in a DoS attack. Any
670 application which performs certificate verification is vulnerable including
671 OpenSSL clients and servers which enable client authentication.
673 This issue was was reported to OpenSSL by Brian Carpenter.
677 *) ASN.1 structure reuse memory corruption fix
679 Reusing a structure in ASN.1 parsing may allow an attacker to cause
680 memory corruption via an invalid write. Such reuse is and has been
681 strongly discouraged and is believed to be rare.
683 Applications that parse structures containing CHOICE or ANY DEFINED BY
684 components may be affected. Certificate parsing (d2i_X509 and related
685 functions) are however not affected. OpenSSL clients and servers are
690 *) PKCS7 NULL pointer dereferences fix
692 The PKCS#7 parsing code does not handle missing outer ContentInfo
693 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs with
694 missing content and trigger a NULL pointer dereference on parsing.
696 Applications that verify PKCS#7 signatures, decrypt PKCS#7 data or
697 otherwise parse PKCS#7 structures from untrusted sources are
698 affected. OpenSSL clients and servers are not affected.
700 This issue was reported to OpenSSL by Michal Zalewski (Google).
704 *) DoS via reachable assert in SSLv2 servers fix
706 A malicious client can trigger an OPENSSL_assert (i.e., an abort) in
707 servers that both support SSLv2 and enable export cipher suites by sending
708 a specially crafted SSLv2 CLIENT-MASTER-KEY message.
710 This issue was discovered by Sean Burford (Google) and Emilia Käsper
711 (OpenSSL development team).
715 *) Empty CKE with client auth and DHE fix
717 If client auth is used then a server can seg fault in the event of a DHE
718 ciphersuite being selected and a zero length ClientKeyExchange message
719 being sent by the client. This could be exploited in a DoS attack.
723 *) Handshake with unseeded PRNG fix
725 Under certain conditions an OpenSSL 1.0.2 client can complete a handshake
726 with an unseeded PRNG. The conditions are:
727 - The client is on a platform where the PRNG has not been seeded
728 automatically, and the user has not seeded manually
729 - A protocol specific client method version has been used (i.e. not
730 SSL_client_methodv23)
731 - A ciphersuite is used that does not require additional random data from
732 the PRNG beyond the initial ClientHello client random (e.g. PSK-RC4-SHA).
734 If the handshake succeeds then the client random that has been used will
735 have been generated from a PRNG with insufficient entropy and therefore the
736 output may be predictable.
738 For example using the following command with an unseeded openssl will
739 succeed on an unpatched platform:
741 openssl s_client -psk 1a2b3c4d -tls1_2 -cipher PSK-RC4-SHA
745 *) Use After Free following d2i_ECPrivatekey error fix
747 A malformed EC private key file consumed via the d2i_ECPrivateKey function
748 could cause a use after free condition. This, in turn, could cause a double
749 free in several private key parsing functions (such as d2i_PrivateKey
750 or EVP_PKCS82PKEY) and could lead to a DoS attack or memory corruption
751 for applications that receive EC private keys from untrusted
752 sources. This scenario is considered rare.
754 This issue was discovered by the BoringSSL project and fixed in their
759 *) X509_to_X509_REQ NULL pointer deref fix
761 The function X509_to_X509_REQ will crash with a NULL pointer dereference if
762 the certificate key is invalid. This function is rarely used in practice.
764 This issue was discovered by Brian Carpenter.
768 *) Removed the export ciphers from the DEFAULT ciphers
771 Changes between 1.0.1l and 1.0.2 [22 Jan 2015]
773 *) Facilitate "universal" ARM builds targeting range of ARM ISAs, e.g.
774 ARMv5 through ARMv8, as opposite to "locking" it to single one.
775 So far those who have to target multiple plaforms would compromise
776 and argue that binary targeting say ARMv5 would still execute on
777 ARMv8. "Universal" build resolves this compromise by providing
778 near-optimal performance even on newer platforms.
781 *) Accelerated NIST P-256 elliptic curve implementation for x86_64
782 (other platforms pending).
783 [Shay Gueron & Vlad Krasnov (Intel Corp), Andy Polyakov]
785 *) Add support for the SignedCertificateTimestampList certificate and
786 OCSP response extensions from RFC6962.
789 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
790 for corner cases. (Certain input points at infinity could lead to
791 bogus results, with non-infinity inputs mapped to infinity too.)
794 *) Initial support for PowerISA 2.0.7, first implemented in POWER8.
795 This covers AES, SHA256/512 and GHASH. "Initial" means that most
796 common cases are optimized and there still is room for further
797 improvements. Vector Permutation AES for Altivec is also added.
800 *) Add support for little-endian ppc64 Linux target.
801 [Marcelo Cerri (IBM)]
803 *) Initial support for AMRv8 ISA crypto extensions. This covers AES,
804 SHA1, SHA256 and GHASH. "Initial" means that most common cases
805 are optimized and there still is room for further improvements.
806 Both 32- and 64-bit modes are supported.
807 [Andy Polyakov, Ard Biesheuvel (Linaro)]
809 *) Improved ARMv7 NEON support.
812 *) Support for SPARC Architecture 2011 crypto extensions, first
813 implemented in SPARC T4. This covers AES, DES, Camellia, SHA1,
814 SHA256/512, MD5, GHASH and modular exponentiation.
815 [Andy Polyakov, David Miller]
817 *) Accelerated modular exponentiation for Intel processors, a.k.a.
819 [Shay Gueron & Vlad Krasnov (Intel Corp)]
821 *) Support for new and upcoming Intel processors, including AVX2,
822 BMI and SHA ISA extensions. This includes additional "stitched"
823 implementations, AESNI-SHA256 and GCM, and multi-buffer support
826 This work was sponsored by Intel Corp.
829 *) Support for DTLS 1.2. This adds two sets of DTLS methods: DTLS_*_method()
830 supports both DTLS 1.2 and 1.0 and should use whatever version the peer
831 supports and DTLSv1_2_*_method() which supports DTLS 1.2 only.
834 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
835 this fixes a limiation in previous versions of OpenSSL.
838 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
839 MGF1 digest and OAEP label.
842 *) Add EVP support for key wrapping algorithms, to avoid problems with
843 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
844 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
845 algorithms and include tests cases.
848 *) Add functions to allocate and set the fields of an ECDSA_METHOD
850 [Douglas E. Engert, Steve Henson]
852 *) New functions OPENSSL_gmtime_diff and ASN1_TIME_diff to find the
853 difference in days and seconds between two tm or ASN1_TIME structures.
856 *) Add -rev test option to s_server to just reverse order of characters
857 received by client and send back to server. Also prints an abbreviated
858 summary of the connection parameters.
861 *) New option -brief for s_client and s_server to print out a brief summary
862 of connection parameters.
865 *) Add callbacks for arbitrary TLS extensions.
866 [Trevor Perrin <trevp@trevp.net> and Ben Laurie]
868 *) New option -crl_download in several openssl utilities to download CRLs
869 from CRLDP extension in certificates.
872 *) New options -CRL and -CRLform for s_client and s_server for CRLs.
875 *) New function X509_CRL_diff to generate a delta CRL from the difference
876 of two full CRLs. Add support to "crl" utility.
879 *) New functions to set lookup_crls function and to retrieve
880 X509_STORE from X509_STORE_CTX.
883 *) Print out deprecated issuer and subject unique ID fields in
887 *) Extend OCSP I/O functions so they can be used for simple general purpose
888 HTTP as well as OCSP. New wrapper function which can be used to download
889 CRLs using the OCSP API.
892 *) Delegate command line handling in s_client/s_server to SSL_CONF APIs.
895 *) SSL_CONF* functions. These provide a common framework for application
896 configuration using configuration files or command lines.
899 *) SSL/TLS tracing code. This parses out SSL/TLS records using the
900 message callback and prints the results. Needs compile time option
901 "enable-ssl-trace". New options to s_client and s_server to enable
905 *) New ctrl and macro to retrieve supported points extensions.
906 Print out extension in s_server and s_client.
909 *) New functions to retrieve certificate signature and signature
913 *) Add functions to retrieve and manipulate the raw cipherlist sent by a
917 *) New Suite B modes for TLS code. These use and enforce the requirements
918 of RFC6460: restrict ciphersuites, only permit Suite B algorithms and
919 only use Suite B curves. The Suite B modes can be set by using the
920 strings "SUITEB128", "SUITEB192" or "SUITEB128ONLY" for the cipherstring.
923 *) New chain verification flags for Suite B levels of security. Check
924 algorithms are acceptable when flags are set in X509_verify_cert.
927 *) Make tls1_check_chain return a set of flags indicating checks passed
928 by a certificate chain. Add additional tests to handle client
929 certificates: checks for matching certificate type and issuer name
933 *) If an attempt is made to use a signature algorithm not in the peer
934 preference list abort the handshake. If client has no suitable
935 signature algorithms in response to a certificate request do not
939 *) If server EC tmp key is not in client preference list abort handshake.
942 *) Add support for certificate stores in CERT structure. This makes it
943 possible to have different stores per SSL structure or one store in
944 the parent SSL_CTX. Include distint stores for certificate chain
945 verification and chain building. New ctrl SSL_CTRL_BUILD_CERT_CHAIN
946 to build and store a certificate chain in CERT structure: returing
947 an error if the chain cannot be built: this will allow applications
948 to test if a chain is correctly configured.
950 Note: if the CERT based stores are not set then the parent SSL_CTX
951 store is used to retain compatibility with existing behaviour.
955 *) New function ssl_set_client_disabled to set a ciphersuite disabled
956 mask based on the current session, check mask when sending client
957 hello and checking the requested ciphersuite.
960 *) New ctrls to retrieve and set certificate types in a certificate
961 request message. Print out received values in s_client. If certificate
962 types is not set with custom values set sensible values based on
963 supported signature algorithms.
966 *) Support for distinct client and server supported signature algorithms.
969 *) Add certificate callback. If set this is called whenever a certificate
970 is required by client or server. An application can decide which
971 certificate chain to present based on arbitrary criteria: for example
972 supported signature algorithms. Add very simple example to s_server.
973 This fixes many of the problems and restrictions of the existing client
974 certificate callback: for example you can now clear an existing
975 certificate and specify the whole chain.
978 *) Add new "valid_flags" field to CERT_PKEY structure which determines what
979 the certificate can be used for (if anything). Set valid_flags field
980 in new tls1_check_chain function. Simplify ssl_set_cert_masks which used
981 to have similar checks in it.
983 Add new "cert_flags" field to CERT structure and include a "strict mode".
984 This enforces some TLS certificate requirements (such as only permitting
985 certificate signature algorithms contained in the supported algorithms
986 extension) which some implementations ignore: this option should be used
987 with caution as it could cause interoperability issues.
990 *) Update and tidy signature algorithm extension processing. Work out
991 shared signature algorithms based on preferences and peer algorithms
992 and print them out in s_client and s_server. Abort handshake if no
993 shared signature algorithms.
996 *) Add new functions to allow customised supported signature algorithms
997 for SSL and SSL_CTX structures. Add options to s_client and s_server
1001 *) New function SSL_certs_clear() to delete all references to certificates
1002 from an SSL structure. Before this once a certificate had been added
1003 it couldn't be removed.
1006 *) Integrate hostname, email address and IP address checking with certificate
1007 verification. New verify options supporting checking in opensl utility.
1010 *) Fixes and wildcard matching support to hostname and email checking
1011 functions. Add manual page.
1012 [Florian Weimer (Red Hat Product Security Team)]
1014 *) New functions to check a hostname email or IP address against a
1015 certificate. Add options x509 utility to print results of checks against
1019 *) Fix OCSP checking.
1020 [Rob Stradling <rob.stradling@comodo.com> and Ben Laurie]
1022 *) Initial experimental support for explicitly trusted non-root CAs.
1023 OpenSSL still tries to build a complete chain to a root but if an
1024 intermediate CA has a trust setting included that is used. The first
1025 setting is used: whether to trust (e.g., -addtrust option to the x509
1029 *) Add -trusted_first option which attempts to find certificates in the
1030 trusted store even if an untrusted chain is also supplied.
1033 *) MIPS assembly pack updates: support for MIPS32r2 and SmartMIPS ASE,
1034 platform support for Linux and Android.
1037 *) Support for linux-x32, ILP32 environment in x86_64 framework.
1040 *) Experimental multi-implementation support for FIPS capable OpenSSL.
1041 When in FIPS mode the approved implementations are used as normal,
1042 when not in FIPS mode the internal unapproved versions are used instead.
1043 This means that the FIPS capable OpenSSL isn't forced to use the
1044 (often lower performance) FIPS implementations outside FIPS mode.
1047 *) Transparently support X9.42 DH parameters when calling
1048 PEM_read_bio_DHparameters. This means existing applications can handle
1049 the new parameter format automatically.
1052 *) Initial experimental support for X9.42 DH parameter format: mainly
1053 to support use of 'q' parameter for RFC5114 parameters.
1056 *) Add DH parameters from RFC5114 including test data to dhtest.
1059 *) Support for automatic EC temporary key parameter selection. If enabled
1060 the most preferred EC parameters are automatically used instead of
1061 hardcoded fixed parameters. Now a server just has to call:
1062 SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically
1063 support ECDH and use the most appropriate parameters.
1066 *) Enhance and tidy EC curve and point format TLS extension code. Use
1067 static structures instead of allocation if default values are used.
1068 New ctrls to set curves we wish to support and to retrieve shared curves.
1069 Print out shared curves in s_server. New options to s_server and s_client
1070 to set list of supported curves.
1073 *) New ctrls to retrieve supported signature algorithms and
1074 supported curve values as an array of NIDs. Extend openssl utility
1075 to print out received values.
1078 *) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert
1079 between NIDs and the more common NIST names such as "P-256". Enhance
1080 ecparam utility and ECC method to recognise the NIST names for curves.
1083 *) Enhance SSL/TLS certificate chain handling to support different
1084 chains for each certificate instead of one chain in the parent SSL_CTX.
1087 *) Support for fixed DH ciphersuite client authentication: where both
1088 server and client use DH certificates with common parameters.
1091 *) Support for fixed DH ciphersuites: those requiring DH server
1095 *) New function i2d_re_X509_tbs for re-encoding the TBS portion of
1097 Note: Related 1.0.2-beta specific macros X509_get_cert_info,
1098 X509_CINF_set_modified, X509_CINF_get_issuer, X509_CINF_get_extensions and
1099 X509_CINF_get_signature were reverted post internal team review.
1101 Changes between 1.0.1k and 1.0.1l [15 Jan 2015]
1103 *) Build fixes for the Windows and OpenVMS platforms
1104 [Matt Caswell and Richard Levitte]
1106 Changes between 1.0.1j and 1.0.1k [8 Jan 2015]
1108 *) Fix DTLS segmentation fault in dtls1_get_record. A carefully crafted DTLS
1109 message can cause a segmentation fault in OpenSSL due to a NULL pointer
1110 dereference. This could lead to a Denial Of Service attack. Thanks to
1111 Markus Stenberg of Cisco Systems, Inc. for reporting this issue.
1115 *) Fix DTLS memory leak in dtls1_buffer_record. A memory leak can occur in the
1116 dtls1_buffer_record function under certain conditions. In particular this
1117 could occur if an attacker sent repeated DTLS records with the same
1118 sequence number but for the next epoch. The memory leak could be exploited
1119 by an attacker in a Denial of Service attack through memory exhaustion.
1120 Thanks to Chris Mueller for reporting this issue.
1124 *) Fix issue where no-ssl3 configuration sets method to NULL. When openssl is
1125 built with the no-ssl3 option and a SSL v3 ClientHello is received the ssl
1126 method would be set to NULL which could later result in a NULL pointer
1127 dereference. Thanks to Frank Schmirler for reporting this issue.
1131 *) Abort handshake if server key exchange message is omitted for ephemeral
1134 Thanks to Karthikeyan Bhargavan of the PROSECCO team at INRIA for
1135 reporting this issue.
1139 *) Remove non-export ephemeral RSA code on client and server. This code
1140 violated the TLS standard by allowing the use of temporary RSA keys in
1141 non-export ciphersuites and could be used by a server to effectively
1142 downgrade the RSA key length used to a value smaller than the server
1143 certificate. Thanks for Karthikeyan Bhargavan of the PROSECCO team at
1144 INRIA or reporting this issue.
1148 *) Fixed issue where DH client certificates are accepted without verification.
1149 An OpenSSL server will accept a DH certificate for client authentication
1150 without the certificate verify message. This effectively allows a client to
1151 authenticate without the use of a private key. This only affects servers
1152 which trust a client certificate authority which issues certificates
1153 containing DH keys: these are extremely rare and hardly ever encountered.
1154 Thanks for Karthikeyan Bhargavan of the PROSECCO team at INRIA or reporting
1159 *) Ensure that the session ID context of an SSL is updated when its
1160 SSL_CTX is updated via SSL_set_SSL_CTX.
1162 The session ID context is typically set from the parent SSL_CTX,
1163 and can vary with the CTX.
1166 *) Fix various certificate fingerprint issues.
1168 By using non-DER or invalid encodings outside the signed portion of a
1169 certificate the fingerprint can be changed without breaking the signature.
1170 Although no details of the signed portion of the certificate can be changed
1171 this can cause problems with some applications: e.g. those using the
1172 certificate fingerprint for blacklists.
1174 1. Reject signatures with non zero unused bits.
1176 If the BIT STRING containing the signature has non zero unused bits reject
1177 the signature. All current signature algorithms require zero unused bits.
1179 2. Check certificate algorithm consistency.
1181 Check the AlgorithmIdentifier inside TBS matches the one in the
1182 certificate signature. NB: this will result in signature failure
1183 errors for some broken certificates.
1185 Thanks to Konrad Kraszewski from Google for reporting this issue.
1187 3. Check DSA/ECDSA signatures use DER.
1189 Reencode DSA/ECDSA signatures and compare with the original received
1190 signature. Return an error if there is a mismatch.
1192 This will reject various cases including garbage after signature
1193 (thanks to Antti Karjalainen and Tuomo Untinen from the Codenomicon CROSS
1194 program for discovering this case) and use of BER or invalid ASN.1 INTEGERs
1195 (negative or with leading zeroes).
1197 Further analysis was conducted and fixes were developed by Stephen Henson
1198 of the OpenSSL core team.
1203 *) Correct Bignum squaring. Bignum squaring (BN_sqr) may produce incorrect
1204 results on some platforms, including x86_64. This bug occurs at random
1205 with a very low probability, and is not known to be exploitable in any
1206 way, though its exact impact is difficult to determine. Thanks to Pieter
1207 Wuille (Blockstream) who reported this issue and also suggested an initial
1208 fix. Further analysis was conducted by the OpenSSL development team and
1209 Adam Langley of Google. The final fix was developed by Andy Polyakov of
1210 the OpenSSL core team.
1214 *) Do not resume sessions on the server if the negotiated protocol
1215 version does not match the session's version. Resuming with a different
1216 version, while not strictly forbidden by the RFC, is of questionable
1217 sanity and breaks all known clients.
1218 [David Benjamin, Emilia Käsper]
1220 *) Tighten handling of the ChangeCipherSpec (CCS) message: reject
1221 early CCS messages during renegotiation. (Note that because
1222 renegotiation is encrypted, this early CCS was not exploitable.)
1225 *) Tighten client-side session ticket handling during renegotiation:
1226 ensure that the client only accepts a session ticket if the server sends
1227 the extension anew in the ServerHello. Previously, a TLS client would
1228 reuse the old extension state and thus accept a session ticket if one was
1229 announced in the initial ServerHello.
1231 Similarly, ensure that the client requires a session ticket if one
1232 was advertised in the ServerHello. Previously, a TLS client would
1233 ignore a missing NewSessionTicket message.
1236 Changes between 1.0.1i and 1.0.1j [15 Oct 2014]
1238 *) SRTP Memory Leak.
1240 A flaw in the DTLS SRTP extension parsing code allows an attacker, who
1241 sends a carefully crafted handshake message, to cause OpenSSL to fail
1242 to free up to 64k of memory causing a memory leak. This could be
1243 exploited in a Denial Of Service attack. This issue affects OpenSSL
1244 1.0.1 server implementations for both SSL/TLS and DTLS regardless of
1245 whether SRTP is used or configured. Implementations of OpenSSL that
1246 have been compiled with OPENSSL_NO_SRTP defined are not affected.
1248 The fix was developed by the OpenSSL team.
1252 *) Session Ticket Memory Leak.
1254 When an OpenSSL SSL/TLS/DTLS server receives a session ticket the
1255 integrity of that ticket is first verified. In the event of a session
1256 ticket integrity check failing, OpenSSL will fail to free memory
1257 causing a memory leak. By sending a large number of invalid session
1258 tickets an attacker could exploit this issue in a Denial Of Service
1263 *) Build option no-ssl3 is incomplete.
1265 When OpenSSL is configured with "no-ssl3" as a build option, servers
1266 could accept and complete a SSL 3.0 handshake, and clients could be
1267 configured to send them.
1269 [Akamai and the OpenSSL team]
1271 *) Add support for TLS_FALLBACK_SCSV.
1272 Client applications doing fallback retries should call
1273 SSL_set_mode(s, SSL_MODE_SEND_FALLBACK_SCSV).
1275 [Adam Langley, Bodo Moeller]
1277 *) Add additional DigestInfo checks.
1279 Reencode DigestInto in DER and check against the original when
1280 verifying RSA signature: this will reject any improperly encoded
1281 DigestInfo structures.
1283 Note: this is a precautionary measure and no attacks are currently known.
1287 Changes between 1.0.1h and 1.0.1i [6 Aug 2014]
1289 *) Fix SRP buffer overrun vulnerability. Invalid parameters passed to the
1290 SRP code can be overrun an internal buffer. Add sanity check that
1291 g, A, B < N to SRP code.
1293 Thanks to Sean Devlin and Watson Ladd of Cryptography Services, NCC
1294 Group for discovering this issue.
1298 *) A flaw in the OpenSSL SSL/TLS server code causes the server to negotiate
1299 TLS 1.0 instead of higher protocol versions when the ClientHello message
1300 is badly fragmented. This allows a man-in-the-middle attacker to force a
1301 downgrade to TLS 1.0 even if both the server and the client support a
1302 higher protocol version, by modifying the client's TLS records.
1304 Thanks to David Benjamin and Adam Langley (Google) for discovering and
1305 researching this issue.
1309 *) OpenSSL DTLS clients enabling anonymous (EC)DH ciphersuites are subject
1310 to a denial of service attack. A malicious server can crash the client
1311 with a null pointer dereference (read) by specifying an anonymous (EC)DH
1312 ciphersuite and sending carefully crafted handshake messages.
1314 Thanks to Felix Gröbert (Google) for discovering and researching this
1319 *) By sending carefully crafted DTLS packets an attacker could cause openssl
1320 to leak memory. This can be exploited through a Denial of Service attack.
1321 Thanks to Adam Langley for discovering and researching this issue.
1325 *) An attacker can force openssl to consume large amounts of memory whilst
1326 processing DTLS handshake messages. This can be exploited through a
1327 Denial of Service attack.
1328 Thanks to Adam Langley for discovering and researching this issue.
1332 *) An attacker can force an error condition which causes openssl to crash
1333 whilst processing DTLS packets due to memory being freed twice. This
1334 can be exploited through a Denial of Service attack.
1335 Thanks to Adam Langley and Wan-Teh Chang for discovering and researching
1340 *) If a multithreaded client connects to a malicious server using a resumed
1341 session and the server sends an ec point format extension it could write
1342 up to 255 bytes to freed memory.
1344 Thanks to Gabor Tyukasz (LogMeIn Inc) for discovering and researching this
1349 *) A malicious server can crash an OpenSSL client with a null pointer
1350 dereference (read) by specifying an SRP ciphersuite even though it was not
1351 properly negotiated with the client. This can be exploited through a
1352 Denial of Service attack.
1354 Thanks to Joonas Kuorilehto and Riku Hietamäki (Codenomicon) for
1355 discovering and researching this issue.
1359 *) A flaw in OBJ_obj2txt may cause pretty printing functions such as
1360 X509_name_oneline, X509_name_print_ex et al. to leak some information
1361 from the stack. Applications may be affected if they echo pretty printing
1362 output to the attacker.
1364 Thanks to Ivan Fratric (Google) for discovering this issue.
1366 [Emilia Käsper, and Steve Henson]
1368 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
1369 for corner cases. (Certain input points at infinity could lead to
1370 bogus results, with non-infinity inputs mapped to infinity too.)
1373 Changes between 1.0.1g and 1.0.1h [5 Jun 2014]
1375 *) Fix for SSL/TLS MITM flaw. An attacker using a carefully crafted
1376 handshake can force the use of weak keying material in OpenSSL
1377 SSL/TLS clients and servers.
1379 Thanks to KIKUCHI Masashi (Lepidum Co. Ltd.) for discovering and
1380 researching this issue. (CVE-2014-0224)
1381 [KIKUCHI Masashi, Steve Henson]
1383 *) Fix DTLS recursion flaw. By sending an invalid DTLS handshake to an
1384 OpenSSL DTLS client the code can be made to recurse eventually crashing
1387 Thanks to Imre Rad (Search-Lab Ltd.) for discovering this issue.
1389 [Imre Rad, Steve Henson]
1391 *) Fix DTLS invalid fragment vulnerability. A buffer overrun attack can
1392 be triggered by sending invalid DTLS fragments to an OpenSSL DTLS
1393 client or server. This is potentially exploitable to run arbitrary
1394 code on a vulnerable client or server.
1396 Thanks to Jüri Aedla for reporting this issue. (CVE-2014-0195)
1397 [Jüri Aedla, Steve Henson]
1399 *) Fix bug in TLS code where clients enable anonymous ECDH ciphersuites
1400 are subject to a denial of service attack.
1402 Thanks to Felix Gröbert and Ivan Fratric at Google for discovering
1403 this issue. (CVE-2014-3470)
1404 [Felix Gröbert, Ivan Fratric, Steve Henson]
1406 *) Harmonize version and its documentation. -f flag is used to display
1408 [mancha <mancha1@zoho.com>]
1410 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
1411 in i2d_ECPrivateKey.
1412 [mancha <mancha1@zoho.com>]
1414 *) Fix some double frees. These are not thought to be exploitable.
1415 [mancha <mancha1@zoho.com>]
1417 Changes between 1.0.1f and 1.0.1g [7 Apr 2014]
1419 *) A missing bounds check in the handling of the TLS heartbeat extension
1420 can be used to reveal up to 64k of memory to a connected client or
1423 Thanks for Neel Mehta of Google Security for discovering this bug and to
1424 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
1425 preparing the fix (CVE-2014-0160)
1426 [Adam Langley, Bodo Moeller]
1428 *) Fix for the attack described in the paper "Recovering OpenSSL
1429 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
1430 by Yuval Yarom and Naomi Benger. Details can be obtained from:
1431 http://eprint.iacr.org/2014/140
1433 Thanks to Yuval Yarom and Naomi Benger for discovering this
1434 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
1435 [Yuval Yarom and Naomi Benger]
1437 *) TLS pad extension: draft-agl-tls-padding-03
1439 Workaround for the "TLS hang bug" (see FAQ and PR#2771): if the
1440 TLS client Hello record length value would otherwise be > 255 and
1441 less that 512 pad with a dummy extension containing zeroes so it
1442 is at least 512 bytes long.
1444 [Adam Langley, Steve Henson]
1446 Changes between 1.0.1e and 1.0.1f [6 Jan 2014]
1448 *) Fix for TLS record tampering bug. A carefully crafted invalid
1449 handshake could crash OpenSSL with a NULL pointer exception.
1450 Thanks to Anton Johansson for reporting this issues.
1453 *) Keep original DTLS digest and encryption contexts in retransmission
1454 structures so we can use the previous session parameters if they need
1455 to be resent. (CVE-2013-6450)
1458 *) Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which
1459 avoids preferring ECDHE-ECDSA ciphers when the client appears to be
1460 Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for
1461 several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug
1462 is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing
1463 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer.
1464 [Rob Stradling, Adam Langley]
1466 Changes between 1.0.1d and 1.0.1e [11 Feb 2013]
1468 *) Correct fix for CVE-2013-0169. The original didn't work on AES-NI
1469 supporting platforms or when small records were transferred.
1470 [Andy Polyakov, Steve Henson]
1472 Changes between 1.0.1c and 1.0.1d [5 Feb 2013]
1474 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
1476 This addresses the flaw in CBC record processing discovered by
1477 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
1478 at: http://www.isg.rhul.ac.uk/tls/
1480 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
1481 Security Group at Royal Holloway, University of London
1482 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
1483 Emilia Käsper for the initial patch.
1485 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
1487 *) Fix flaw in AESNI handling of TLS 1.2 and 1.1 records for CBC mode
1488 ciphersuites which can be exploited in a denial of service attack.
1489 Thanks go to and to Adam Langley <agl@chromium.org> for discovering
1490 and detecting this bug and to Wolfgang Ettlinger
1491 <wolfgang.ettlinger@gmail.com> for independently discovering this issue.
1495 *) Return an error when checking OCSP signatures when key is NULL.
1496 This fixes a DoS attack. (CVE-2013-0166)
1499 *) Make openssl verify return errors.
1500 [Chris Palmer <palmer@google.com> and Ben Laurie]
1502 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
1503 the right response is stapled. Also change SSL_get_certificate()
1504 so it returns the certificate actually sent.
1505 See http://rt.openssl.org/Ticket/Display.html?id=2836.
1506 [Rob Stradling <rob.stradling@comodo.com>]
1508 *) Fix possible deadlock when decoding public keys.
1511 *) Don't use TLS 1.0 record version number in initial client hello
1515 Changes between 1.0.1b and 1.0.1c [10 May 2012]
1517 *) Sanity check record length before skipping explicit IV in TLS
1518 1.2, 1.1 and DTLS to fix DoS attack.
1520 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
1521 fuzzing as a service testing platform.
1525 *) Initialise tkeylen properly when encrypting CMS messages.
1526 Thanks to Solar Designer of Openwall for reporting this issue.
1529 *) In FIPS mode don't try to use composite ciphers as they are not
1533 Changes between 1.0.1a and 1.0.1b [26 Apr 2012]
1535 *) OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and
1536 1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately
1537 mean any application compiled against OpenSSL 1.0.0 headers setting
1538 SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disablng
1539 TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to
1540 0x10000000L Any application which was previously compiled against
1541 OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1
1542 will need to be recompiled as a result. Letting be results in
1543 inability to disable specifically TLS 1.1 and in client context,
1544 in unlike event, limit maximum offered version to TLS 1.0 [see below].
1547 *) In order to ensure interoperabilty SSL_OP_NO_protocolX does not
1548 disable just protocol X, but all protocols above X *if* there are
1549 protocols *below* X still enabled. In more practical terms it means
1550 that if application wants to disable TLS1.0 in favor of TLS1.1 and
1551 above, it's not sufficient to pass SSL_OP_NO_TLSv1, one has to pass
1552 SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2. This applies to
1556 Changes between 1.0.1 and 1.0.1a [19 Apr 2012]
1558 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
1559 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
1560 in CRYPTO_realloc_clean.
1562 Thanks to Tavis Ormandy, Google Security Team, for discovering this
1563 issue and to Adam Langley <agl@chromium.org> for fixing it.
1565 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
1567 *) Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections.
1570 *) Workarounds for some broken servers that "hang" if a client hello
1571 record length exceeds 255 bytes.
1573 1. Do not use record version number > TLS 1.0 in initial client
1574 hello: some (but not all) hanging servers will now work.
1575 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate
1576 the number of ciphers sent in the client hello. This should be
1577 set to an even number, such as 50, for example by passing:
1578 -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure.
1579 Most broken servers should now work.
1580 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable
1581 TLS 1.2 client support entirely.
1584 *) Fix SEGV in Vector Permutation AES module observed in OpenSSH.
1587 Changes between 1.0.0h and 1.0.1 [14 Mar 2012]
1589 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET
1590 STRING form instead of a DigestInfo.
1593 *) The format used for MDC2 RSA signatures is inconsistent between EVP
1594 and the RSA_sign/RSA_verify functions. This was made more apparent when
1595 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
1596 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
1597 the correct format in RSA_verify so both forms transparently work.
1600 *) Some servers which support TLS 1.0 can choke if we initially indicate
1601 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
1602 encrypted premaster secret. As a workaround use the maximum permitted
1603 client version in client hello, this should keep such servers happy
1604 and still work with previous versions of OpenSSL.
1607 *) Add support for TLS/DTLS heartbeats.
1608 [Robin Seggelmann <seggelmann@fh-muenster.de>]
1610 *) Add support for SCTP.
1611 [Robin Seggelmann <seggelmann@fh-muenster.de>]
1613 *) Improved PRNG seeding for VOS.
1614 [Paul Green <Paul.Green@stratus.com>]
1616 *) Extensive assembler packs updates, most notably:
1618 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
1619 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
1620 - x86_64: bit-sliced AES implementation;
1621 - ARM: NEON support, contemporary platforms optimizations;
1622 - s390x: z196 support;
1623 - *: GHASH and GF(2^m) multiplication implementations;
1627 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
1628 (removal of unnecessary code)
1629 [Peter Sylvester <peter.sylvester@edelweb.fr>]
1631 *) Add TLS key material exporter from RFC 5705.
1634 *) Add DTLS-SRTP negotiation from RFC 5764.
1637 *) Add Next Protocol Negotiation,
1638 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
1639 disabled with a no-npn flag to config or Configure. Code donated
1641 [Adam Langley <agl@google.com> and Ben Laurie]
1643 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
1644 NIST-P256, NIST-P521, with constant-time single point multiplication on
1645 typical inputs. Compiler support for the nonstandard type __uint128_t is
1646 required to use this (present in gcc 4.4 and later, for 64-bit builds).
1647 Code made available under Apache License version 2.0.
1649 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
1650 line to include this in your build of OpenSSL, and run "make depend" (or
1651 "make update"). This enables the following EC_METHODs:
1653 EC_GFp_nistp224_method()
1654 EC_GFp_nistp256_method()
1655 EC_GFp_nistp521_method()
1657 EC_GROUP_new_by_curve_name() will automatically use these (while
1658 EC_GROUP_new_curve_GFp() currently prefers the more flexible
1660 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
1662 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
1663 all platforms. Move ssize_t definition from e_os.h to the public
1664 header file e_os2.h as it now appears in public header file cms.h
1667 *) New -sigopt option to the ca, req and x509 utilities. Additional
1668 signature parameters can be passed using this option and in
1672 *) Add RSA PSS signing function. This will generate and set the
1673 appropriate AlgorithmIdentifiers for PSS based on those in the
1674 corresponding EVP_MD_CTX structure. No application support yet.
1677 *) Support for companion algorithm specific ASN1 signing routines.
1678 New function ASN1_item_sign_ctx() signs a pre-initialised
1679 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
1680 the appropriate parameters.
1683 *) Add new algorithm specific ASN1 verification initialisation function
1684 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
1685 handling will be the same no matter what EVP_PKEY_METHOD is used.
1686 Add a PSS handler to support verification of PSS signatures: checked
1687 against a number of sample certificates.
1690 *) Add signature printing for PSS. Add PSS OIDs.
1691 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
1693 *) Add algorithm specific signature printing. An individual ASN1 method
1694 can now print out signatures instead of the standard hex dump.
1696 More complex signatures (e.g. PSS) can print out more meaningful
1697 information. Include DSA version that prints out the signature
1701 *) Password based recipient info support for CMS library: implementing
1705 *) Split password based encryption into PBES2 and PBKDF2 functions. This
1706 neatly separates the code into cipher and PBE sections and is required
1707 for some algorithms that split PBES2 into separate pieces (such as
1708 password based CMS).
1711 *) Session-handling fixes:
1712 - Fix handling of connections that are resuming with a session ID,
1713 but also support Session Tickets.
1714 - Fix a bug that suppressed issuing of a new ticket if the client
1715 presented a ticket with an expired session.
1716 - Try to set the ticket lifetime hint to something reasonable.
1717 - Make tickets shorter by excluding irrelevant information.
1718 - On the client side, don't ignore renewed tickets.
1719 [Adam Langley, Bodo Moeller (Google)]
1721 *) Fix PSK session representation.
1724 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
1726 This work was sponsored by Intel.
1729 *) Add GCM support to TLS library. Some custom code is needed to split
1730 the IV between the fixed (from PRF) and explicit (from TLS record)
1731 portions. This adds all GCM ciphersuites supported by RFC5288 and
1732 RFC5289. Generalise some AES* cipherstrings to include GCM and
1733 add a special AESGCM string for GCM only.
1736 *) Expand range of ctrls for AES GCM. Permit setting invocation
1737 field on decrypt and retrieval of invocation field only on encrypt.
1740 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
1741 As required by RFC5289 these ciphersuites cannot be used if for
1742 versions of TLS earlier than 1.2.
1745 *) For FIPS capable OpenSSL interpret a NULL default public key method
1746 as unset and return the appropriate default but do *not* set the default.
1747 This means we can return the appropriate method in applications that
1748 switch between FIPS and non-FIPS modes.
1751 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
1752 ENGINE is used then we cannot handle that in the FIPS module so we
1753 keep original code iff non-FIPS operations are allowed.
1756 *) Add -attime option to openssl utilities.
1757 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
1759 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
1762 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
1763 FIPS EC methods unconditionally for now.
1766 *) New build option no-ec2m to disable characteristic 2 code.
1769 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
1770 all cases can be covered as some introduce binary incompatibilities.
1773 *) Redirect RSA operations to FIPS module including keygen,
1774 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
1777 *) Add similar low level API blocking to ciphers.
1780 *) Low level digest APIs are not approved in FIPS mode: any attempt
1781 to use these will cause a fatal error. Applications that *really* want
1782 to use them can use the private_* version instead.
1785 *) Redirect cipher operations to FIPS module for FIPS builds.
1788 *) Redirect digest operations to FIPS module for FIPS builds.
1791 *) Update build system to add "fips" flag which will link in fipscanister.o
1792 for static and shared library builds embedding a signature if needed.
1795 *) Output TLS supported curves in preference order instead of numerical
1796 order. This is currently hardcoded for the highest order curves first.
1797 This should be configurable so applications can judge speed vs strength.
1800 *) Add TLS v1.2 server support for client authentication.
1803 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
1807 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
1808 FIPS modules versions.
1811 *) Add TLS v1.2 client side support for client authentication. Keep cache
1812 of handshake records longer as we don't know the hash algorithm to use
1813 until after the certificate request message is received.
1816 *) Initial TLS v1.2 client support. Add a default signature algorithms
1817 extension including all the algorithms we support. Parse new signature
1818 format in client key exchange. Relax some ECC signing restrictions for
1819 TLS v1.2 as indicated in RFC5246.
1822 *) Add server support for TLS v1.2 signature algorithms extension. Switch
1823 to new signature format when needed using client digest preference.
1824 All server ciphersuites should now work correctly in TLS v1.2. No client
1825 support yet and no support for client certificates.
1828 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
1829 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
1830 ciphersuites. At present only RSA key exchange ciphersuites work with
1831 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
1832 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
1833 and version checking.
1836 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
1837 with this defined it will not be affected by any changes to ssl internal
1838 structures. Add several utility functions to allow openssl application
1839 to work with OPENSSL_NO_SSL_INTERN defined.
1843 [Tom Wu <tjw@cs.stanford.edu> and Ben Laurie]
1845 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
1848 *) Permit abbreviated handshakes when renegotiating using the function
1849 SSL_renegotiate_abbreviated().
1850 [Robin Seggelmann <seggelmann@fh-muenster.de>]
1852 *) Add call to ENGINE_register_all_complete() to
1853 ENGINE_load_builtin_engines(), so some implementations get used
1854 automatically instead of needing explicit application support.
1857 *) Add support for TLS key exporter as described in RFC5705.
1858 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
1860 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
1861 a few changes are required:
1863 Add SSL_OP_NO_TLSv1_1 flag.
1864 Add TLSv1_1 methods.
1865 Update version checking logic to handle version 1.1.
1866 Add explicit IV handling (ported from DTLS code).
1867 Add command line options to s_client/s_server.
1870 Changes between 1.0.0g and 1.0.0h [12 Mar 2012]
1872 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
1873 in CMS and PKCS7 code. When RSA decryption fails use a random key for
1874 content decryption and always return the same error. Note: this attack
1875 needs on average 2^20 messages so it only affects automated senders. The
1876 old behaviour can be reenabled in the CMS code by setting the
1877 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
1878 an MMA defence is not necessary.
1879 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
1880 this issue. (CVE-2012-0884)
1883 *) Fix CVE-2011-4619: make sure we really are receiving a
1884 client hello before rejecting multiple SGC restarts. Thanks to
1885 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
1888 Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
1890 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
1891 Thanks to Antonio Martin, Enterprise Secure Access Research and
1892 Development, Cisco Systems, Inc. for discovering this bug and
1893 preparing a fix. (CVE-2012-0050)
1896 Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
1898 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
1899 of the Vaudenay padding oracle attack on CBC mode encryption
1900 which enables an efficient plaintext recovery attack against
1901 the OpenSSL implementation of DTLS. Their attack exploits timing
1902 differences arising during decryption processing. A research
1903 paper describing this attack can be found at:
1904 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
1905 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
1906 Security Group at Royal Holloway, University of London
1907 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
1908 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
1909 for preparing the fix. (CVE-2011-4108)
1910 [Robin Seggelmann, Michael Tuexen]
1912 *) Clear bytes used for block padding of SSL 3.0 records.
1914 [Adam Langley (Google)]
1916 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
1917 Kadianakis <desnacked@gmail.com> for discovering this issue and
1918 Adam Langley for preparing the fix. (CVE-2011-4619)
1919 [Adam Langley (Google)]
1921 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
1922 [Andrey Kulikov <amdeich@gmail.com>]
1924 *) Prevent malformed RFC3779 data triggering an assertion failure.
1925 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
1926 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
1927 [Rob Austein <sra@hactrn.net>]
1929 *) Improved PRNG seeding for VOS.
1930 [Paul Green <Paul.Green@stratus.com>]
1932 *) Fix ssl_ciph.c set-up race.
1933 [Adam Langley (Google)]
1935 *) Fix spurious failures in ecdsatest.c.
1936 [Emilia Käsper (Google)]
1938 *) Fix the BIO_f_buffer() implementation (which was mixing different
1939 interpretations of the '..._len' fields).
1940 [Adam Langley (Google)]
1942 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
1943 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
1944 threads won't reuse the same blinding coefficients.
1946 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
1947 lock to call BN_BLINDING_invert_ex, and avoids one use of
1948 BN_BLINDING_update for each BN_BLINDING structure (previously,
1949 the last update always remained unused).
1950 [Emilia Käsper (Google)]
1952 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
1953 [Bob Buckholz (Google)]
1955 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
1957 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
1958 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
1959 [Kaspar Brand <ossl@velox.ch>]
1961 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
1962 for multi-threaded use of ECDH. (CVE-2011-3210)
1963 [Adam Langley (Google)]
1965 *) Fix x509_name_ex_d2i memory leak on bad inputs.
1968 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
1969 signature public key algorithm by using OID xref utilities instead.
1970 Before this you could only use some ECC ciphersuites with SHA1 only.
1973 *) Add protection against ECDSA timing attacks as mentioned in the paper
1974 by Billy Bob Brumley and Nicola Tuveri, see:
1976 http://eprint.iacr.org/2011/232.pdf
1978 [Billy Bob Brumley and Nicola Tuveri]
1980 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
1982 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
1983 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
1985 *) Fix bug in string printing code: if *any* escaping is enabled we must
1986 escape the escape character (backslash) or the resulting string is
1990 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
1992 *) Disable code workaround for ancient and obsolete Netscape browsers
1993 and servers: an attacker can use it in a ciphersuite downgrade attack.
1994 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
1997 *) Fixed J-PAKE implementation error, originally discovered by
1998 Sebastien Martini, further info and confirmation from Stefan
1999 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
2002 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
2004 *) Fix extension code to avoid race conditions which can result in a buffer
2005 overrun vulnerability: resumed sessions must not be modified as they can
2006 be shared by multiple threads. CVE-2010-3864
2009 *) Fix WIN32 build system to correctly link an ENGINE directory into
2013 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
2015 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
2017 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
2019 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
2021 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
2022 context. The operation can be customised via the ctrl mechanism in
2023 case ENGINEs want to include additional functionality.
2026 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
2029 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
2030 output hashes compatible with older versions of OpenSSL.
2031 [Willy Weisz <weisz@vcpc.univie.ac.at>]
2033 *) Fix compression algorithm handling: if resuming a session use the
2034 compression algorithm of the resumed session instead of determining
2035 it from client hello again. Don't allow server to change algorithm.
2038 *) Add load_crls() function to apps tidying load_certs() too. Add option
2039 to verify utility to allow additional CRLs to be included.
2042 *) Update OCSP request code to permit adding custom headers to the request:
2043 some responders need this.
2046 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
2048 [Julia Lawall <julia@diku.dk>]
2050 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
2051 needlessly dereferenced structures, used obsolete functions and
2052 didn't handle all updated verify codes correctly.
2055 *) Disable MD2 in the default configuration.
2058 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
2059 indicate the initial BIO being pushed or popped. This makes it possible
2060 to determine whether the BIO is the one explicitly called or as a result
2061 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
2062 it handles reference counts correctly and doesn't zero out the I/O bio
2063 when it is not being explicitly popped. WARNING: applications which
2064 included workarounds for the old buggy behaviour will need to be modified
2065 or they could free up already freed BIOs.
2068 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
2069 renaming to all platforms (within the 0.9.8 branch, this was
2070 done conditionally on Netware platforms to avoid a name clash).
2071 [Guenter <lists@gknw.net>]
2073 *) Add ECDHE and PSK support to DTLS.
2074 [Michael Tuexen <tuexen@fh-muenster.de>]
2076 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
2080 *) Add "missing" function EVP_MD_flags() (without this the only way to
2081 retrieve a digest flags is by accessing the structure directly. Update
2082 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
2083 or cipher is registered as in the "from" argument. Print out all
2084 registered digests in the dgst usage message instead of manually
2085 attempting to work them out.
2088 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
2089 this allows the use of compression and extensions. Change default cipher
2090 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
2091 by default unless an application cipher string requests it.
2094 *) Alter match criteria in PKCS12_parse(). It used to try to use local
2095 key ids to find matching certificates and keys but some PKCS#12 files
2096 don't follow the (somewhat unwritten) rules and this strategy fails.
2097 Now just gather all certificates together and the first private key
2098 then look for the first certificate that matches the key.
2101 *) Support use of registered digest and cipher names for dgst and cipher
2102 commands instead of having to add each one as a special case. So now
2109 openssl dgst -sha256 foo
2111 and this works for ENGINE based algorithms too.
2115 *) Update Gost ENGINE to support parameter files.
2116 [Victor B. Wagner <vitus@cryptocom.ru>]
2118 *) Support GeneralizedTime in ca utility.
2119 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
2121 *) Enhance the hash format used for certificate directory links. The new
2122 form uses the canonical encoding (meaning equivalent names will work
2123 even if they aren't identical) and uses SHA1 instead of MD5. This form
2124 is incompatible with the older format and as a result c_rehash should
2125 be used to rebuild symbolic links.
2128 *) Make PKCS#8 the default write format for private keys, replacing the
2129 traditional format. This form is standardised, more secure and doesn't
2130 include an implicit MD5 dependency.
2133 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
2134 committed to OpenSSL should pass this lot as a minimum.
2137 *) Add session ticket override functionality for use by EAP-FAST.
2138 [Jouni Malinen <j@w1.fi>]
2140 *) Modify HMAC functions to return a value. Since these can be implemented
2141 in an ENGINE errors can occur.
2144 *) Type-checked OBJ_bsearch_ex.
2147 *) Type-checked OBJ_bsearch. Also some constification necessitated
2148 by type-checking. Still to come: TXT_DB, bsearch(?),
2149 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
2153 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
2154 seconds to a tm structure directly, instead of going through OS
2155 specific date routines. This avoids any issues with OS routines such
2156 as the year 2038 bug. New *_adj() functions for ASN1 time structures
2157 and X509_time_adj_ex() to cover the extended range. The existing
2158 X509_time_adj() is still usable and will no longer have any date issues.
2161 *) Delta CRL support. New use deltas option which will attempt to locate
2162 and search any appropriate delta CRLs available.
2164 This work was sponsored by Google.
2167 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
2168 code and add additional score elements. Validate alternate CRL paths
2169 as part of the CRL checking and indicate a new error "CRL path validation
2170 error" in this case. Applications wanting additional details can use
2171 the verify callback and check the new "parent" field. If this is not
2172 NULL CRL path validation is taking place. Existing applications wont
2173 see this because it requires extended CRL support which is off by
2176 This work was sponsored by Google.
2179 *) Support for freshest CRL extension.
2181 This work was sponsored by Google.
2184 *) Initial indirect CRL support. Currently only supported in the CRLs
2185 passed directly and not via lookup. Process certificate issuer
2186 CRL entry extension and lookup CRL entries by bother issuer name
2187 and serial number. Check and process CRL issuer entry in IDP extension.
2189 This work was sponsored by Google.
2192 *) Add support for distinct certificate and CRL paths. The CRL issuer
2193 certificate is validated separately in this case. Only enabled if
2194 an extended CRL support flag is set: this flag will enable additional
2195 CRL functionality in future.
2197 This work was sponsored by Google.
2200 *) Add support for policy mappings extension.
2202 This work was sponsored by Google.
2205 *) Fixes to pathlength constraint, self issued certificate handling,
2206 policy processing to align with RFC3280 and PKITS tests.
2208 This work was sponsored by Google.
2211 *) Support for name constraints certificate extension. DN, email, DNS
2212 and URI types are currently supported.
2214 This work was sponsored by Google.
2217 *) To cater for systems that provide a pointer-based thread ID rather
2218 than numeric, deprecate the current numeric thread ID mechanism and
2219 replace it with a structure and associated callback type. This
2220 mechanism allows a numeric "hash" to be extracted from a thread ID in
2221 either case, and on platforms where pointers are larger than 'long',
2222 mixing is done to help ensure the numeric 'hash' is usable even if it
2223 can't be guaranteed unique. The default mechanism is to use "&errno"
2224 as a pointer-based thread ID to distinguish between threads.
2226 Applications that want to provide their own thread IDs should now use
2227 CRYPTO_THREADID_set_callback() to register a callback that will call
2228 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
2230 Note that ERR_remove_state() is now deprecated, because it is tied
2231 to the assumption that thread IDs are numeric. ERR_remove_state(0)
2232 to free the current thread's error state should be replaced by
2233 ERR_remove_thread_state(NULL).
2235 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
2236 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
2237 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
2238 application was previously providing a numeric thread callback that
2239 was inappropriate for distinguishing threads, then uniqueness might
2240 have been obtained with &errno that happened immediately in the
2241 intermediate development versions of OpenSSL; this is no longer the
2242 case, the numeric thread callback will now override the automatic use
2244 [Geoff Thorpe, with help from Bodo Moeller]
2246 *) Initial support for different CRL issuing certificates. This covers a
2247 simple case where the self issued certificates in the chain exist and
2248 the real CRL issuer is higher in the existing chain.
2250 This work was sponsored by Google.
2253 *) Removed effectively defunct crypto/store from the build.
2256 *) Revamp of STACK to provide stronger type-checking. Still to come:
2257 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
2258 ASN1_STRING, CONF_VALUE.
2261 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
2262 RAM on SSL connections. This option can save about 34k per idle SSL.
2265 *) Revamp of LHASH to provide stronger type-checking. Still to come:
2266 STACK, TXT_DB, bsearch, qsort.
2269 *) Initial support for Cryptographic Message Syntax (aka CMS) based
2270 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
2271 support for data, signedData, compressedData, digestedData and
2272 encryptedData, envelopedData types included. Scripts to check against
2273 RFC4134 examples draft and interop and consistency checks of many
2274 content types and variants.
2277 *) Add options to enc utility to support use of zlib compression BIO.
2280 *) Extend mk1mf to support importing of options and assembly language
2281 files from Configure script, currently only included in VC-WIN32.
2282 The assembly language rules can now optionally generate the source
2283 files from the associated perl scripts.
2286 *) Implement remaining functionality needed to support GOST ciphersuites.
2287 Interop testing has been performed using CryptoPro implementations.
2288 [Victor B. Wagner <vitus@cryptocom.ru>]
2290 *) s390x assembler pack.
2293 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
2297 *) Implement Opaque PRF Input TLS extension as specified in
2298 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
2299 official specification yet and no extension type assignment by
2300 IANA exists, this extension (for now) will have to be explicitly
2301 enabled when building OpenSSL by providing the extension number
2302 to use. For example, specify an option
2304 -DTLSEXT_TYPE_opaque_prf_input=0x9527
2306 to the "config" or "Configure" script to enable the extension,
2307 assuming extension number 0x9527 (which is a completely arbitrary
2308 and unofficial assignment based on the MD5 hash of the Internet
2309 Draft). Note that by doing so, you potentially lose
2310 interoperability with other TLS implementations since these might
2311 be using the same extension number for other purposes.
2313 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
2314 opaque PRF input value to use in the handshake. This will create
2315 an interal copy of the length-'len' string at 'src', and will
2316 return non-zero for success.
2318 To get more control and flexibility, provide a callback function
2321 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
2322 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
2326 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
2329 Callback function 'cb' will be called in handshakes, and is
2330 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
2331 Argument 'arg' is for application purposes (the value as given to
2332 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
2333 be provided to the callback function). The callback function
2334 has to return non-zero to report success: usually 1 to use opaque
2335 PRF input just if possible, or 2 to enforce use of the opaque PRF
2336 input. In the latter case, the library will abort the handshake
2337 if opaque PRF input is not successfully negotiated.
2339 Arguments 'peerinput' and 'len' given to the callback function
2340 will always be NULL and 0 in the case of a client. A server will
2341 see the client's opaque PRF input through these variables if
2342 available (NULL and 0 otherwise). Note that if the server
2343 provides an opaque PRF input, the length must be the same as the
2344 length of the client's opaque PRF input.
2346 Note that the callback function will only be called when creating
2347 a new session (session resumption can resume whatever was
2348 previously negotiated), and will not be called in SSL 2.0
2349 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
2350 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
2351 for applications that need to enforce opaque PRF input.
2355 *) Update ssl code to support digests other than SHA1+MD5 for handshake
2358 [Victor B. Wagner <vitus@cryptocom.ru>]
2360 *) Add RFC4507 support to OpenSSL. This includes the corrections in
2361 RFC4507bis. The encrypted ticket format is an encrypted encoded
2362 SSL_SESSION structure, that way new session features are automatically
2365 If a client application caches session in an SSL_SESSION structure
2366 support is transparent because tickets are now stored in the encoded
2369 The SSL_CTX structure automatically generates keys for ticket
2370 protection in servers so again support should be possible
2371 with no application modification.
2373 If a client or server wishes to disable RFC4507 support then the option
2374 SSL_OP_NO_TICKET can be set.
2376 Add a TLS extension debugging callback to allow the contents of any client
2377 or server extensions to be examined.
2379 This work was sponsored by Google.
2382 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
2383 OpenSSL should now compile cleanly on gcc 4.2
2384 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
2386 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
2387 support including streaming MAC support: this is required for GOST
2388 ciphersuite support.
2389 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
2391 *) Add option -stream to use PKCS#7 streaming in smime utility. New
2392 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
2393 to output in BER and PEM format.
2396 *) Experimental support for use of HMAC via EVP_PKEY interface. This
2397 allows HMAC to be handled via the EVP_DigestSign*() interface. The
2398 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
2399 ENGINE support for HMAC keys which are unextractable. New -mac and
2400 -macopt options to dgst utility.
2403 *) New option -sigopt to dgst utility. Update dgst to use
2404 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
2405 alternative signing paramaters such as X9.31 or PSS in the dgst
2409 *) Change ssl_cipher_apply_rule(), the internal function that does
2410 the work each time a ciphersuite string requests enabling
2411 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
2412 removing ("!foo+bar") a class of ciphersuites: Now it maintains
2413 the order of disabled ciphersuites such that those ciphersuites
2414 that most recently went from enabled to disabled not only stay
2415 in order with respect to each other, but also have higher priority
2416 than other disabled ciphersuites the next time ciphersuites are
2419 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
2420 the same ciphersuites as with "HIGH" alone, but in a specific
2421 order where the PSK ciphersuites come first (since they are the
2422 most recently disabled ciphersuites when "HIGH" is parsed).
2424 Also, change ssl_create_cipher_list() (using this new
2425 funcionality) such that between otherwise identical
2426 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
2430 *) Change ssl_create_cipher_list() so that it automatically
2431 arranges the ciphersuites in reasonable order before starting
2432 to process the rule string. Thus, the definition for "DEFAULT"
2433 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
2434 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
2435 This makes it much easier to arrive at a reasonable default order
2436 in applications for which anonymous ciphers are OK (meaning
2437 that you can't actually use DEFAULT).
2438 [Bodo Moeller; suggested by Victor Duchovni]
2440 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
2441 processing) into multiple integers instead of setting
2442 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
2443 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
2444 (These masks as well as the individual bit definitions are hidden
2445 away into the non-exported interface ssl/ssl_locl.h, so this
2446 change to the definition of the SSL_CIPHER structure shouldn't
2447 affect applications.) This give us more bits for each of these
2448 categories, so there is no longer a need to coagulate AES128 and
2449 AES256 into a single algorithm bit, and to coagulate Camellia128
2450 and Camellia256 into a single algorithm bit, which has led to all
2453 Thus, among other things, the kludge introduced in 0.9.7m and
2454 0.9.8e for masking out AES256 independently of AES128 or masking
2455 out Camellia256 independently of AES256 is not needed here in 0.9.9.
2457 With the change, we also introduce new ciphersuite aliases that
2458 so far were missing: "AES128", "AES256", "CAMELLIA128", and
2462 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
2463 Use the leftmost N bytes of the signature input if the input is
2464 larger than the prime q (with N being the size in bytes of q).
2467 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
2468 it yet and it is largely untested.
2471 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
2474 *) Initial incomplete changes to avoid need for function casts in OpenSSL
2475 some compilers (gcc 4.2 and later) reject their use. Safestack is
2476 reimplemented. Update ASN1 to avoid use of legacy functions.
2479 *) Win32/64 targets are linked with Winsock2.
2482 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
2483 to external functions. This can be used to increase CRL handling
2484 efficiency especially when CRLs are very large by (for example) storing
2485 the CRL revoked certificates in a database.
2488 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
2489 new CRLs added to a directory can be used. New command line option
2490 -verify_return_error to s_client and s_server. This causes real errors
2491 to be returned by the verify callback instead of carrying on no matter
2492 what. This reflects the way a "real world" verify callback would behave.
2495 *) GOST engine, supporting several GOST algorithms and public key formats.
2496 Kindly donated by Cryptocom.
2499 *) Partial support for Issuing Distribution Point CRL extension. CRLs
2500 partitioned by DP are handled but no indirect CRL or reason partitioning
2501 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
2502 selected via a scoring technique which handles IDP and AKID in CRLs.
2505 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
2506 will ultimately be used for all verify operations: this will remove the
2507 X509_STORE dependency on certificate verification and allow alternative
2508 lookup methods. X509_STORE based implementations of these two callbacks.
2511 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
2512 Modify get_crl() to find a valid (unexpired) CRL if possible.
2515 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
2516 this would be called X509_CRL_cmp() but that name is already used by
2517 a function that just compares CRL issuer names. Cache several CRL
2518 extensions in X509_CRL structure and cache CRLDP in X509.
2521 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
2522 this maps equivalent X509_NAME structures into a consistent structure.
2523 Name comparison can then be performed rapidly using memcmp().
2526 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
2530 *) Allow digests to supply their own micalg string for S/MIME type using
2531 the ctrl EVP_MD_CTRL_MICALG.
2534 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
2535 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
2536 ctrl. It can then customise the structure before and/or after signing
2540 *) New function OBJ_add_sigid() to allow application defined signature OIDs
2541 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
2542 to free up any added signature OIDs.
2545 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
2546 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
2547 digest and cipher tables. New options added to openssl utility:
2548 list-message-digest-algorithms and list-cipher-algorithms.
2551 *) Change the array representation of binary polynomials: the list
2552 of degrees of non-zero coefficients is now terminated with -1.
2553 Previously it was terminated with 0, which was also part of the
2554 value; thus, the array representation was not applicable to
2555 polynomials where t^0 has coefficient zero. This change makes
2556 the array representation useful in a more general context.
2559 *) Various modifications and fixes to SSL/TLS cipher string
2560 handling. For ECC, the code now distinguishes between fixed ECDH
2561 with RSA certificates on the one hand and with ECDSA certificates
2562 on the other hand, since these are separate ciphersuites. The
2563 unused code for Fortezza ciphersuites has been removed.
2565 For consistency with EDH, ephemeral ECDH is now called "EECDH"
2566 (not "ECDHE"). For consistency with the code for DH
2567 certificates, use of ECDH certificates is now considered ECDH
2568 authentication, not RSA or ECDSA authentication (the latter is
2569 merely the CA's signing algorithm and not actively used in the
2572 The temporary ciphersuite alias "ECCdraft" is no longer
2573 available, and ECC ciphersuites are no longer excluded from "ALL"
2574 and "DEFAULT". The following aliases now exist for RFC 4492
2575 ciphersuites, most of these by analogy with the DH case:
2577 kECDHr - ECDH cert, signed with RSA
2578 kECDHe - ECDH cert, signed with ECDSA
2579 kECDH - ECDH cert (signed with either RSA or ECDSA)
2580 kEECDH - ephemeral ECDH
2581 ECDH - ECDH cert or ephemeral ECDH
2587 AECDH - anonymous ECDH
2588 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
2592 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
2593 Use correct micalg parameters depending on digest(s) in signed message.
2596 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
2597 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
2600 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
2601 an engine to register a method. Add ENGINE lookups for methods and
2602 functional reference processing.
2605 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
2606 EVP_{Sign,Verify}* which allow an application to customise the signature
2610 *) New -resign option to smime utility. This adds one or more signers
2611 to an existing PKCS#7 signedData structure. Also -md option to use an
2612 alternative message digest algorithm for signing.
2615 *) Tidy up PKCS#7 routines and add new functions to make it easier to
2616 create PKCS7 structures containing multiple signers. Update smime
2617 application to support multiple signers.
2620 *) New -macalg option to pkcs12 utility to allow setting of an alternative
2624 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
2625 Reorganize PBE internals to lookup from a static table using NIDs,
2626 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
2627 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
2628 PRF which will be automatically used with PBES2.
2631 *) Replace the algorithm specific calls to generate keys in "req" with the
2635 *) Update PKCS#7 enveloped data routines to use new API. This is now
2636 supported by any public key method supporting the encrypt operation. A
2637 ctrl is added to allow the public key algorithm to examine or modify
2638 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
2642 *) Add a ctrl to asn1 method to allow a public key algorithm to express
2643 a default digest type to use. In most cases this will be SHA1 but some
2644 algorithms (such as GOST) need to specify an alternative digest. The
2645 return value indicates how strong the preference is 1 means optional and
2646 2 is mandatory (that is it is the only supported type). Modify
2647 ASN1_item_sign() to accept a NULL digest argument to indicate it should
2648 use the default md. Update openssl utilities to use the default digest
2649 type for signing if it is not explicitly indicated.
2652 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
2653 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
2654 signing method from the key type. This effectively removes the link
2655 between digests and public key types.
2658 *) Add an OID cross reference table and utility functions. Its purpose is to
2659 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
2660 rsaEncryption. This will allow some of the algorithm specific hackery
2661 needed to use the correct OID to be removed.
2664 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
2665 structures for PKCS7_sign(). They are now set up by the relevant public
2669 *) Add provisional EC pkey method with support for ECDSA and ECDH.
2672 *) Add support for key derivation (agreement) in the API, DH method and
2676 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
2677 public and private key formats. As a side effect these add additional
2678 command line functionality not previously available: DSA signatures can be
2679 generated and verified using pkeyutl and DH key support and generation in
2684 [Oliver Tappe <zooey@hirschkaefer.de>]
2686 *) New make target "install_html_docs" installs HTML renditions of the
2688 [Oliver Tappe <zooey@hirschkaefer.de>]
2690 *) New utility "genpkey" this is analogous to "genrsa" etc except it can
2691 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
2692 support key and parameter generation and add initial key generation
2693 functionality for RSA.
2696 *) Add functions for main EVP_PKEY_method operations. The undocumented
2697 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
2698 EVP_PKEY_{encrypt,decrypt}_old.
2701 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
2702 key API, doesn't do much yet.
2705 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
2706 public key algorithms. New option to openssl utility:
2707 "list-public-key-algorithms" to print out info.
2710 *) Implement the Supported Elliptic Curves Extension for
2711 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
2714 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
2715 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
2718 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
2719 utilities such as rsa, dsa, dsaparam etc except they process any key
2723 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
2724 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
2725 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
2729 *) Initial support for pluggable public key ASN1.
2730 De-spaghettify the public key ASN1 handling. Move public and private
2731 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
2732 algorithm specific handling to a single module within the relevant
2733 algorithm directory. Add functions to allow (near) opaque processing
2734 of public and private key structures.
2737 *) Implement the Supported Point Formats Extension for
2738 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
2741 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
2742 for the psk identity [hint] and the psk callback functions to the
2743 SSL_SESSION, SSL and SSL_CTX structure.
2746 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
2750 SSL_CTX_use_psk_identity_hint
2751 SSL_get_psk_identity_hint
2752 SSL_get_psk_identity
2753 SSL_use_psk_identity_hint
2755 [Mika Kousa and Pasi Eronen of Nokia Corporation]
2757 *) Add RFC 3161 compliant time stamp request creation, response generation
2758 and response verification functionality.
2759 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
2761 *) Add initial support for TLS extensions, specifically for the server_name
2762 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
2763 have new members for a host name. The SSL data structure has an
2764 additional member SSL_CTX *initial_ctx so that new sessions can be
2765 stored in that context to allow for session resumption, even after the
2766 SSL has been switched to a new SSL_CTX in reaction to a client's
2767 server_name extension.
2769 New functions (subject to change):
2771 SSL_get_servername()
2772 SSL_get_servername_type()
2775 New CTRL codes and macros (subject to change):
2777 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
2778 - SSL_CTX_set_tlsext_servername_callback()
2779 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
2780 - SSL_CTX_set_tlsext_servername_arg()
2781 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
2783 openssl s_client has a new '-servername ...' option.
2785 openssl s_server has new options '-servername_host ...', '-cert2 ...',
2786 '-key2 ...', '-servername_fatal' (subject to change). This allows
2787 testing the HostName extension for a specific single host name ('-cert'
2788 and '-key' remain fallbacks for handshakes without HostName
2789 negotiation). If the unrecognized_name alert has to be sent, this by
2790 default is a warning; it becomes fatal with the '-servername_fatal'
2793 [Peter Sylvester, Remy Allais, Christophe Renou]
2795 *) Whirlpool hash implementation is added.
2798 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
2799 bn(64,32). Because of instruction set limitations it doesn't have
2800 any negative impact on performance. This was done mostly in order
2801 to make it possible to share assembler modules, such as bn_mul_mont
2802 implementations, between 32- and 64-bit builds without hassle.
2805 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
2806 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
2810 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
2811 dedicated Montgomery multiplication procedure, is introduced.
2812 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
2813 "64-bit" performance on certain 32-bit targets.
2816 *) New option SSL_OP_NO_COMP to disable use of compression selectively
2817 in SSL structures. New SSL ctrl to set maximum send fragment size.
2818 Save memory by seeting the I/O buffer sizes dynamically instead of
2819 using the maximum available value.
2822 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
2823 in addition to the text details.
2826 *) Very, very preliminary EXPERIMENTAL support for printing of general
2827 ASN1 structures. This currently produces rather ugly output and doesn't
2828 handle several customised structures at all.
2831 *) Integrated support for PVK file format and some related formats such
2832 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
2833 these in the 'rsa' and 'dsa' utilities.
2836 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
2839 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
2840 place for the (very old) "NETSCAPE" format certificates which are now
2841 handled using new ASN1 code equivalents.
2844 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
2845 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
2846 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
2849 *) Modify CRL distribution points extension code to print out previously
2850 unsupported fields. Enhance extension setting code to allow setting of
2854 *) Add print and set support for Issuing Distribution Point CRL extension.
2857 *) Change 'Configure' script to enable Camellia by default.
2860 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
2862 *) When rejecting SSL/TLS records due to an incorrect version number, never
2863 update s->server with a new major version number. As of
2864 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
2865 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
2866 the previous behavior could result in a read attempt at NULL when
2867 receiving specific incorrect SSL/TLS records once record payload
2868 protection is active. (CVE-2010-0740)
2869 [Bodo Moeller, Adam Langley <agl@chromium.org>]
2871 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
2872 could be crashed if the relevant tables were not present (e.g. chrooted).
2873 [Tomas Hoger <thoger@redhat.com>]
2875 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
2877 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
2878 [Martin Olsson, Neel Mehta]
2880 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
2881 accommodate for stack sorting, always a write lock!).
2884 *) On some versions of WIN32 Heap32Next is very slow. This can cause
2885 excessive delays in the RAND_poll(): over a minute. As a workaround
2886 include a time check in the inner Heap32Next loop too.
2889 *) The code that handled flushing of data in SSL/TLS originally used the
2890 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
2891 the problem outlined in PR#1949. The fix suggested there however can
2892 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
2893 of Apache). So instead simplify the code to flush unconditionally.
2894 This should be fine since flushing with no data to flush is a no op.
2897 *) Handle TLS versions 2.0 and later properly and correctly use the
2898 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
2899 off ancient servers have a habit of sticking around for a while...
2902 *) Modify compression code so it frees up structures without using the
2903 ex_data callbacks. This works around a problem where some applications
2904 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
2905 restarting) then use compression (e.g. SSL with compression) later.
2906 This results in significant per-connection memory leaks and
2907 has caused some security issues including CVE-2008-1678 and
2911 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
2912 change when encrypting or decrypting.
2915 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
2916 connect and renegotiate with servers which do not support RI.
2917 Until RI is more widely deployed this option is enabled by default.
2920 *) Add "missing" ssl ctrls to clear options and mode.
2923 *) If client attempts to renegotiate and doesn't support RI respond with
2924 a no_renegotiation alert as required by RFC5746. Some renegotiating
2925 TLS clients will continue a connection gracefully when they receive
2926 the alert. Unfortunately OpenSSL mishandled this alert and would hang
2927 waiting for a server hello which it will never receive. Now we treat a
2928 received no_renegotiation alert as a fatal error. This is because
2929 applications requesting a renegotiation might well expect it to succeed
2930 and would have no code in place to handle the server denying it so the
2931 only safe thing to do is to terminate the connection.
2934 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
2935 peer supports secure renegotiation and 0 otherwise. Print out peer
2936 renegotiation support in s_client/s_server.
2939 *) Replace the highly broken and deprecated SPKAC certification method with
2940 the updated NID creation version. This should correctly handle UTF8.
2943 *) Implement RFC5746. Re-enable renegotiation but require the extension
2944 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
2945 turns out to be a bad idea. It has been replaced by
2946 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
2947 SSL_CTX_set_options(). This is really not recommended unless you
2948 know what you are doing.
2949 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
2951 *) Fixes to stateless session resumption handling. Use initial_ctx when
2952 issuing and attempting to decrypt tickets in case it has changed during
2953 servername handling. Use a non-zero length session ID when attempting
2954 stateless session resumption: this makes it possible to determine if
2955 a resumption has occurred immediately after receiving server hello
2956 (several places in OpenSSL subtly assume this) instead of later in
2960 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
2961 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
2962 fixes for a few places where the return code is not checked
2964 [Julia Lawall <julia@diku.dk>]
2966 *) Add --strict-warnings option to Configure script to include devteam
2967 warnings in other configurations.
2970 *) Add support for --libdir option and LIBDIR variable in makefiles. This
2971 makes it possible to install openssl libraries in locations which
2972 have names other than "lib", for example "/usr/lib64" which some
2974 [Steve Henson, based on patch from Jeremy Utley]
2976 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
2977 X690 8.9.12 and can produce some misleading textual output of OIDs.
2978 [Steve Henson, reported by Dan Kaminsky]
2980 *) Delete MD2 from algorithm tables. This follows the recommendation in
2981 several standards that it is not used in new applications due to
2982 several cryptographic weaknesses. For binary compatibility reasons
2983 the MD2 API is still compiled in by default.
2986 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
2990 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
2991 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
2993 [Guenter <lists@gknw.net>]
2995 *) Fix the server certificate chain building code to use X509_verify_cert(),
2996 it used to have an ad-hoc builder which was unable to cope with anything
2997 other than a simple chain.
2998 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
3000 *) Don't check self signed certificate signatures in X509_verify_cert()
3001 by default (a flag can override this): it just wastes time without
3002 adding any security. As a useful side effect self signed root CAs
3003 with non-FIPS digests are now usable in FIPS mode.
3006 *) In dtls1_process_out_of_seq_message() the check if the current message
3007 is already buffered was missing. For every new message was memory
3008 allocated, allowing an attacker to perform an denial of service attack
3009 with sending out of seq handshake messages until there is no memory
3010 left. Additionally every future messege was buffered, even if the
3011 sequence number made no sense and would be part of another handshake.
3012 So only messages with sequence numbers less than 10 in advance will be
3013 buffered. (CVE-2009-1378)
3014 [Robin Seggelmann, discovered by Daniel Mentz]
3016 *) Records are buffered if they arrive with a future epoch to be
3017 processed after finishing the corresponding handshake. There is
3018 currently no limitation to this buffer allowing an attacker to perform
3019 a DOS attack with sending records with future epochs until there is no
3020 memory left. This patch adds the pqueue_size() function to determine
3021 the size of a buffer and limits the record buffer to 100 entries.
3023 [Robin Seggelmann, discovered by Daniel Mentz]
3025 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
3026 parent structure is freed. (CVE-2009-1379)
3029 *) Handle non-blocking I/O properly in SSL_shutdown() call.
3030 [Darryl Miles <darryl-mailinglists@netbauds.net>]
3033 [Ilya O. <vrghost@gmail.com>]
3035 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
3037 *) Disable renegotiation completely - this fixes a severe security
3038 problem (CVE-2009-3555) at the cost of breaking all
3039 renegotiation. Renegotiation can be re-enabled by setting
3040 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
3041 run-time. This is really not recommended unless you know what
3045 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
3047 *) Don't set val to NULL when freeing up structures, it is freed up by
3048 underlying code. If sizeof(void *) > sizeof(long) this can result in
3049 zeroing past the valid field. (CVE-2009-0789)
3050 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
3052 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
3053 checked correctly. This would allow some invalid signed attributes to
3054 appear to verify correctly. (CVE-2009-0591)
3055 [Ivan Nestlerode <inestlerode@us.ibm.com>]
3057 *) Reject UniversalString and BMPString types with invalid lengths. This
3058 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
3059 a legal length. (CVE-2009-0590)
3062 *) Set S/MIME signing as the default purpose rather than setting it
3063 unconditionally. This allows applications to override it at the store
3067 *) Permit restricted recursion of ASN1 strings. This is needed in practice
3068 to handle some structures.
3071 *) Improve efficiency of mem_gets: don't search whole buffer each time
3073 [Jeremy Shapiro <jnshapir@us.ibm.com>]
3075 *) New -hex option for openssl rand.
3078 *) Print out UTF8String and NumericString when parsing ASN1.
3081 *) Support NumericString type for name components.
3084 *) Allow CC in the environment to override the automatically chosen
3085 compiler. Note that nothing is done to ensure flags work with the
3089 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
3091 *) Properly check EVP_VerifyFinal() and similar return values
3093 [Ben Laurie, Bodo Moeller, Google Security Team]
3095 *) Enable TLS extensions by default.
3098 *) Allow the CHIL engine to be loaded, whether the application is
3099 multithreaded or not. (This does not release the developer from the
3100 obligation to set up the dynamic locking callbacks.)
3101 [Sander Temme <sander@temme.net>]
3103 *) Use correct exit code if there is an error in dgst command.
3104 [Steve Henson; problem pointed out by Roland Dirlewanger]
3106 *) Tweak Configure so that you need to say "experimental-jpake" to enable
3107 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
3110 *) Add experimental JPAKE support, including demo authentication in
3111 s_client and s_server.
3114 *) Set the comparison function in v3_addr_canonize().
3115 [Rob Austein <sra@hactrn.net>]
3117 *) Add support for XMPP STARTTLS in s_client.
3118 [Philip Paeps <philip@freebsd.org>]
3120 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
3121 to ensure that even with this option, only ciphersuites in the
3122 server's preference list will be accepted. (Note that the option
3123 applies only when resuming a session, so the earlier behavior was
3124 just about the algorithm choice for symmetric cryptography.)
3127 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
3129 *) Fix NULL pointer dereference if a DTLS server received
3130 ChangeCipherSpec as first record (CVE-2009-1386).
3133 *) Fix a state transition in s3_srvr.c and d1_srvr.c
3134 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
3137 *) The fix in 0.9.8c that supposedly got rid of unsafe
3138 double-checked locking was incomplete for RSA blinding,
3139 addressing just one layer of what turns out to have been
3140 doubly unsafe triple-checked locking.
3142 So now fix this for real by retiring the MONT_HELPER macro
3143 in crypto/rsa/rsa_eay.c.
3145 [Bodo Moeller; problem pointed out by Marius Schilder]
3147 *) Various precautionary measures:
3149 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
3151 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
3152 (NB: This would require knowledge of the secret session ticket key
3153 to exploit, in which case you'd be SOL either way.)
3155 - Change bn_nist.c so that it will properly handle input BIGNUMs
3156 outside the expected range.
3158 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
3161 [Neel Mehta, Bodo Moeller]
3163 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
3164 the load fails. Useful for distros.
3165 [Ben Laurie and the FreeBSD team]
3167 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
3170 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
3173 *) Expand ENGINE to support engine supplied SSL client certificate functions.
3175 This work was sponsored by Logica.
3178 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
3179 keystores. Support for SSL/TLS client authentication too.
3180 Not compiled unless enable-capieng specified to Configure.
3182 This work was sponsored by Logica.
3185 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
3186 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
3187 attribute creation routines such as certifcate requests and PKCS#12
3191 Changes between 0.9.8g and 0.9.8h [28 May 2008]
3193 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
3194 handshake which could lead to a cilent crash as found using the
3195 Codenomicon TLS test suite (CVE-2008-1672)
3196 [Steve Henson, Mark Cox]
3198 *) Fix double free in TLS server name extensions which could lead to
3199 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
3202 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
3204 Clear the error queue to ensure that error entries left from
3205 older function calls do not interfere with the correct operation.
3206 [Lutz Jaenicke, Erik de Castro Lopo]
3208 *) Remove root CA certificates of commercial CAs:
3210 The OpenSSL project does not recommend any specific CA and does not
3211 have any policy with respect to including or excluding any CA.
3212 Therefore it does not make any sense to ship an arbitrary selection
3213 of root CA certificates with the OpenSSL software.
3216 *) RSA OAEP patches to fix two separate invalid memory reads.
3217 The first one involves inputs when 'lzero' is greater than
3218 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
3219 before the beginning of from). The second one involves inputs where
3220 the 'db' section contains nothing but zeroes (there is a one-byte
3221 invalid read after the end of 'db').
3222 [Ivan Nestlerode <inestlerode@us.ibm.com>]
3224 *) Partial backport from 0.9.9-dev:
3226 Introduce bn_mul_mont (dedicated Montgomery multiplication
3227 procedure) as a candidate for BIGNUM assembler implementation.
3228 While 0.9.9-dev uses assembler for various architectures, only
3229 x86_64 is available by default here in the 0.9.8 branch, and
3230 32-bit x86 is available through a compile-time setting.
3232 To try the 32-bit x86 assembler implementation, use Configure
3233 option "enable-montasm" (which exists only for this backport).
3235 As "enable-montasm" for 32-bit x86 disclaims code stability
3236 anyway, in this constellation we activate additional code
3237 backported from 0.9.9-dev for further performance improvements,
3238 namely BN_from_montgomery_word. (To enable this otherwise,
3239 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
3241 [Andy Polyakov (backport partially by Bodo Moeller)]
3243 *) Add TLS session ticket callback. This allows an application to set
3244 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
3245 values. This is useful for key rollover for example where several key
3246 sets may exist with different names.
3249 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
3250 This was broken until now in 0.9.8 releases, such that the only way
3251 a registered ENGINE could be used (assuming it initialises
3252 successfully on the host) was to explicitly set it as the default
3253 for the relevant algorithms. This is in contradiction with 0.9.7
3254 behaviour and the documentation. With this fix, when an ENGINE is
3255 registered into a given algorithm's table of implementations, the
3256 'uptodate' flag is reset so that auto-discovery will be used next
3257 time a new context for that algorithm attempts to select an
3259 [Ian Lister (tweaked by Geoff Thorpe)]
3261 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
3262 implemention in the following ways:
3264 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
3267 Lack of BER streaming support means one pass streaming processing is
3268 only supported if data is detached: setting the streaming flag is
3269 ignored for embedded content.
3271 CMS support is disabled by default and must be explicitly enabled
3272 with the enable-cms configuration option.
3275 *) Update the GMP engine glue to do direct copies between BIGNUM and
3276 mpz_t when openssl and GMP use the same limb size. Otherwise the
3277 existing "conversion via a text string export" trick is still used.
3278 [Paul Sheer <paulsheer@gmail.com>]
3280 *) Zlib compression BIO. This is a filter BIO which compressed and
3281 uncompresses any data passed through it.
3284 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
3285 RFC3394 compatible AES key wrapping.
3288 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
3289 sets string data without copying. X509_ALGOR_set0() and
3290 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
3291 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
3292 from an X509_ATTRIBUTE structure optionally checking it occurs only
3293 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
3297 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
3298 to get the expected BN_FLG_CONSTTIME behavior.
3299 [Bodo Moeller (Google)]
3303 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
3304 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
3305 - added some more tests to do_tests.pl
3306 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
3307 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
3308 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
3309 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
3310 - various changes to netware.pl to enable gcc-cross builds on Win32
3312 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
3313 - various changes to fix missing prototype warnings
3314 - fixed x86nasm.pl to create correct asm files for NASM COFF output
3315 - added AES, WHIRLPOOL and CPUID assembler code to build files
3316 - added missing AES assembler make rules to mk1mf.pl
3317 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
3318 [Guenter Knauf <eflash@gmx.net>]
3320 *) Implement certificate status request TLS extension defined in RFC3546.
3321 A client can set the appropriate parameters and receive the encoded
3322 OCSP response via a callback. A server can query the supplied parameters
3323 and set the encoded OCSP response in the callback. Add simplified examples
3324 to s_client and s_server.
3327 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
3329 *) Fix various bugs:
3330 + Binary incompatibility of ssl_ctx_st structure
3331 + DTLS interoperation with non-compliant servers
3332 + Don't call get_session_cb() without proposed session
3333 + Fix ia64 assembler code
3334 [Andy Polyakov, Steve Henson]
3336 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
3338 *) DTLS Handshake overhaul. There were longstanding issues with
3339 OpenSSL DTLS implementation, which were making it impossible for
3340 RFC 4347 compliant client to communicate with OpenSSL server.
3341 Unfortunately just fixing these incompatibilities would "cut off"
3342 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
3343 server keeps tolerating non RFC compliant syntax. The opposite is
3344 not true, 0.9.8f client can not communicate with earlier server.
3345 This update even addresses CVE-2007-4995.
3348 *) Changes to avoid need for function casts in OpenSSL: some compilers
3349 (gcc 4.2 and later) reject their use.
3350 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
3353 *) Add RFC4507 support to OpenSSL. This includes the corrections in
3354 RFC4507bis. The encrypted ticket format is an encrypted encoded
3355 SSL_SESSION structure, that way new session features are automatically
3358 If a client application caches session in an SSL_SESSION structure
3359 support is transparent because tickets are now stored in the encoded
3362 The SSL_CTX structure automatically generates keys for ticket
3363 protection in servers so again support should be possible
3364 with no application modification.
3366 If a client or server wishes to disable RFC4507 support then the option
3367 SSL_OP_NO_TICKET can be set.
3369 Add a TLS extension debugging callback to allow the contents of any client
3370 or server extensions to be examined.
3372 This work was sponsored by Google.
3375 *) Add initial support for TLS extensions, specifically for the server_name
3376 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
3377 have new members for a host name. The SSL data structure has an
3378 additional member SSL_CTX *initial_ctx so that new sessions can be
3379 stored in that context to allow for session resumption, even after the
3380 SSL has been switched to a new SSL_CTX in reaction to a client's
3381 server_name extension.
3383 New functions (subject to change):
3385 SSL_get_servername()
3386 SSL_get_servername_type()
3389 New CTRL codes and macros (subject to change):
3391 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
3392 - SSL_CTX_set_tlsext_servername_callback()
3393 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
3394 - SSL_CTX_set_tlsext_servername_arg()
3395 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
3397 openssl s_client has a new '-servername ...' option.
3399 openssl s_server has new options '-servername_host ...', '-cert2 ...',
3400 '-key2 ...', '-servername_fatal' (subject to change). This allows
3401 testing the HostName extension for a specific single host name ('-cert'
3402 and '-key' remain fallbacks for handshakes without HostName
3403 negotiation). If the unrecognized_name alert has to be sent, this by
3404 default is a warning; it becomes fatal with the '-servername_fatal'
3407 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
3409 *) Add AES and SSE2 assembly language support to VC++ build.
3412 *) Mitigate attack on final subtraction in Montgomery reduction.
3415 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
3416 (which previously caused an internal error).
3419 *) Squeeze another 10% out of IGE mode when in != out.
3422 *) AES IGE mode speedup.
3423 [Dean Gaudet (Google)]
3425 *) Add the Korean symmetric 128-bit cipher SEED (see
3426 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
3427 add SEED ciphersuites from RFC 4162:
3429 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
3430 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
3431 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
3432 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
3434 To minimize changes between patchlevels in the OpenSSL 0.9.8
3435 series, SEED remains excluded from compilation unless OpenSSL
3436 is configured with 'enable-seed'.
3437 [KISA, Bodo Moeller]
3439 *) Mitigate branch prediction attacks, which can be practical if a
3440 single processor is shared, allowing a spy process to extract
3441 information. For detailed background information, see
3442 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
3443 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
3444 and Necessary Software Countermeasures"). The core of the change
3445 are new versions BN_div_no_branch() and
3446 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
3447 respectively, which are slower, but avoid the security-relevant
3448 conditional branches. These are automatically called by BN_div()
3449 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
3450 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
3451 remove a conditional branch.
3453 BN_FLG_CONSTTIME is the new name for the previous
3454 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
3455 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
3456 in the exponent causes BN_mod_exp_mont() to use the alternative
3457 implementation in BN_mod_exp_mont_consttime().) The old name
3458 remains as a deprecated alias.
3460 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
3461 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
3462 constant-time implementations for more than just exponentiation.
3463 Here too the old name is kept as a deprecated alias.
3465 BN_BLINDING_new() will now use BN_dup() for the modulus so that
3466 the BN_BLINDING structure gets an independent copy of the
3467 modulus. This means that the previous "BIGNUM *m" argument to
3468 BN_BLINDING_new() and to BN_BLINDING_create_param() now
3469 essentially becomes "const BIGNUM *m", although we can't actually
3470 change this in the header file before 0.9.9. It allows
3471 RSA_setup_blinding() to use BN_with_flags() on the modulus to
3472 enable BN_FLG_CONSTTIME.
3474 [Matthew D Wood (Intel Corp)]
3476 *) In the SSL/TLS server implementation, be strict about session ID
3477 context matching (which matters if an application uses a single
3478 external cache for different purposes). Previously,
3479 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
3480 set. This did ensure strict client verification, but meant that,
3481 with applications using a single external cache for quite
3482 different requirements, clients could circumvent ciphersuite
3483 restrictions for a given session ID context by starting a session
3484 in a different context.
3487 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
3488 a ciphersuite string such as "DEFAULT:RSA" cannot enable
3489 authentication-only ciphersuites.
3492 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
3493 not complete and could lead to a possible single byte overflow
3494 (CVE-2007-5135) [Ben Laurie]
3496 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
3498 *) Since AES128 and AES256 (and similarly Camellia128 and
3499 Camellia256) share a single mask bit in the logic of
3500 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
3501 kludge to work properly if AES128 is available and AES256 isn't
3502 (or if Camellia128 is available and Camellia256 isn't).
3505 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
3506 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
3507 When a point or a seed is encoded in a BIT STRING, we need to
3508 prevent the removal of trailing zero bits to get the proper DER
3509 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
3510 of a NamedBitList, for which trailing 0 bits need to be removed.)
3513 *) Have SSL/TLS server implementation tolerate "mismatched" record
3514 protocol version while receiving ClientHello even if the
3515 ClientHello is fragmented. (The server can't insist on the
3516 particular protocol version it has chosen before the ServerHello
3517 message has informed the client about his choice.)
3520 *) Add RFC 3779 support.
3521 [Rob Austein for ARIN, Ben Laurie]
3523 *) Load error codes if they are not already present instead of using a
3524 static variable. This allows them to be cleanly unloaded and reloaded.
3525 Improve header file function name parsing.
3528 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
3529 or CAPABILITY handshake as required by RFCs.
3532 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
3534 *) Introduce limits to prevent malicious keys being able to
3535 cause a denial of service. (CVE-2006-2940)
3536 [Steve Henson, Bodo Moeller]
3538 *) Fix ASN.1 parsing of certain invalid structures that can result
3539 in a denial of service. (CVE-2006-2937) [Steve Henson]
3541 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
3542 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
3544 *) Fix SSL client code which could crash if connecting to a
3545 malicious SSLv2 server. (CVE-2006-4343)
3546 [Tavis Ormandy and Will Drewry, Google Security Team]
3548 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
3549 match only those. Before that, "AES256-SHA" would be interpreted
3550 as a pattern and match "AES128-SHA" too (since AES128-SHA got
3551 the same strength classification in 0.9.7h) as we currently only
3552 have a single AES bit in the ciphersuite description bitmap.
3553 That change, however, also applied to ciphersuite strings such as
3554 "RC4-MD5" that intentionally matched multiple ciphersuites --
3555 namely, SSL 2.0 ciphersuites in addition to the more common ones
3556 from SSL 3.0/TLS 1.0.
3558 So we change the selection algorithm again: Naming an explicit
3559 ciphersuite selects this one ciphersuite, and any other similar
3560 ciphersuite (same bitmap) from *other* protocol versions.
3561 Thus, "RC4-MD5" again will properly select both the SSL 2.0
3562 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
3564 Since SSL 2.0 does not have any ciphersuites for which the
3565 128/256 bit distinction would be relevant, this works for now.
3566 The proper fix will be to use different bits for AES128 and
3567 AES256, which would have avoided the problems from the beginning;
3568 however, bits are scarce, so we can only do this in a new release
3569 (not just a patchlevel) when we can change the SSL_CIPHER
3570 definition to split the single 'unsigned long mask' bitmap into
3571 multiple values to extend the available space.
3575 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
3577 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
3578 (CVE-2006-4339) [Ben Laurie and Google Security Team]
3580 *) Add AES IGE and biIGE modes.
3583 *) Change the Unix randomness entropy gathering to use poll() when
3584 possible instead of select(), since the latter has some
3585 undesirable limitations.
3586 [Darryl Miles via Richard Levitte and Bodo Moeller]
3588 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
3589 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
3590 cannot be implicitly activated as part of, e.g., the "AES" alias.
3591 However, please upgrade to OpenSSL 0.9.9[-dev] for
3592 non-experimental use of the ECC ciphersuites to get TLS extension
3593 support, which is required for curve and point format negotiation
3594 to avoid potential handshake problems.
3597 *) Disable rogue ciphersuites:
3599 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
3600 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
3601 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
3603 The latter two were purportedly from
3604 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
3607 Also deactivate the remaining ciphersuites from
3608 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
3609 unofficial, and the ID has long expired.
3612 *) Fix RSA blinding Heisenbug (problems sometimes occured on
3613 dual-core machines) and other potential thread-safety issues.
3616 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
3617 versions), which is now available for royalty-free use
3618 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
3619 Also, add Camellia TLS ciphersuites from RFC 4132.
3621 To minimize changes between patchlevels in the OpenSSL 0.9.8
3622 series, Camellia remains excluded from compilation unless OpenSSL
3623 is configured with 'enable-camellia'.
3626 *) Disable the padding bug check when compression is in use. The padding
3627 bug check assumes the first packet is of even length, this is not
3628 necessarily true if compresssion is enabled and can result in false
3629 positives causing handshake failure. The actual bug test is ancient
3630 code so it is hoped that implementations will either have fixed it by
3631 now or any which still have the bug do not support compression.
3634 Changes between 0.9.8a and 0.9.8b [04 May 2006]
3636 *) When applying a cipher rule check to see if string match is an explicit
3637 cipher suite and only match that one cipher suite if it is.
3640 *) Link in manifests for VC++ if needed.
3641 [Austin Ziegler <halostatue@gmail.com>]
3643 *) Update support for ECC-based TLS ciphersuites according to
3644 draft-ietf-tls-ecc-12.txt with proposed changes (but without
3645 TLS extensions, which are supported starting with the 0.9.9
3646 branch, not in the OpenSSL 0.9.8 branch).
3649 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
3650 opaque EVP_CIPHER_CTX handling.
3653 *) Fixes and enhancements to zlib compression code. We now only use
3654 "zlib1.dll" and use the default __cdecl calling convention on Win32
3655 to conform with the standards mentioned here:
3656 http://www.zlib.net/DLL_FAQ.txt
3657 Static zlib linking now works on Windows and the new --with-zlib-include
3658 --with-zlib-lib options to Configure can be used to supply the location
3659 of the headers and library. Gracefully handle case where zlib library
3663 *) Several fixes and enhancements to the OID generation code. The old code
3664 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
3665 handle numbers larger than ULONG_MAX, truncated printing and had a
3666 non standard OBJ_obj2txt() behaviour.
3669 *) Add support for building of engines under engine/ as shared libraries
3670 under VC++ build system.
3673 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
3674 Hopefully, we will not see any false combination of paths any more.
3677 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
3679 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
3680 (part of SSL_OP_ALL). This option used to disable the
3681 countermeasure against man-in-the-middle protocol-version
3682 rollback in the SSL 2.0 server implementation, which is a bad
3683 idea. (CVE-2005-2969)
3685 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
3686 for Information Security, National Institute of Advanced Industrial
3687 Science and Technology [AIST], Japan)]
3689 *) Add two function to clear and return the verify parameter flags.
3692 *) Keep cipherlists sorted in the source instead of sorting them at
3693 runtime, thus removing the need for a lock.
3696 *) Avoid some small subgroup attacks in Diffie-Hellman.
3697 [Nick Mathewson and Ben Laurie]
3699 *) Add functions for well-known primes.
3702 *) Extended Windows CE support.
3703 [Satoshi Nakamura and Andy Polyakov]
3705 *) Initialize SSL_METHOD structures at compile time instead of during
3706 runtime, thus removing the need for a lock.
3709 *) Make PKCS7_decrypt() work even if no certificate is supplied by
3710 attempting to decrypt each encrypted key in turn. Add support to
3714 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
3716 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
3719 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
3722 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
3723 key into the same file any more.
3726 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
3729 *) Add -utf8 command line and config file option to 'ca'.
3730 [Stefan <stf@udoma.org]
3732 *) Removed the macro des_crypt(), as it seems to conflict with some
3733 libraries. Use DES_crypt().
3736 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
3737 involves renaming the source and generated shared-libs for
3738 both. The engines will accept the corrected or legacy ids
3739 ('ncipher' and '4758_cca' respectively) when binding. NB,
3740 this only applies when building 'shared'.
3741 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
3743 *) Add attribute functions to EVP_PKEY structure. Modify
3744 PKCS12_create() to recognize a CSP name attribute and
3745 use it. Make -CSP option work again in pkcs12 utility.
3748 *) Add new functionality to the bn blinding code:
3749 - automatic re-creation of the BN_BLINDING parameters after
3750 a fixed number of uses (currently 32)
3751 - add new function for parameter creation
3752 - introduce flags to control the update behaviour of the
3753 BN_BLINDING parameters
3754 - hide BN_BLINDING structure
3755 Add a second BN_BLINDING slot to the RSA structure to improve
3756 performance when a single RSA object is shared among several
3760 *) Add support for DTLS.
3761 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
3763 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
3764 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
3767 *) Remove buggy and incomplete DH cert support from
3768 ssl/ssl_rsa.c and ssl/s3_both.c
3771 *) Use SHA-1 instead of MD5 as the default digest algorithm for
3772 the apps/openssl applications.
3775 *) Compile clean with "-Wall -Wmissing-prototypes
3776 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
3777 DEBUG_SAFESTACK must also be set.
3780 *) Change ./Configure so that certain algorithms can be disabled by default.
3781 The new counterpiece to "no-xxx" is "enable-xxx".
3783 The patented RC5 and MDC2 algorithms will now be disabled unless
3784 "enable-rc5" and "enable-mdc2", respectively, are specified.
3786 (IDEA remains enabled despite being patented. This is because IDEA
3787 is frequently required for interoperability, and there is no license
3788 fee for non-commercial use. As before, "no-idea" can be used to
3789 avoid this algorithm.)
3793 *) Add processing of proxy certificates (see RFC 3820). This work was
3794 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
3795 EGEE (Enabling Grids for E-science in Europe).
3798 *) RC4 performance overhaul on modern architectures/implementations, such
3799 as Intel P4, IA-64 and AMD64.
3802 *) New utility extract-section.pl. This can be used specify an alternative
3803 section number in a pod file instead of having to treat each file as
3804 a separate case in Makefile. This can be done by adding two lines to the
3807 =for comment openssl_section:XXX
3809 The blank line is mandatory.
3813 *) New arguments -certform, -keyform and -pass for s_client and s_server
3814 to allow alternative format key and certificate files and passphrase
3818 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
3819 update associated structures and add various utility functions.
3821 Add new policy related verify parameters, include policy checking in
3822 standard verify code. Enhance 'smime' application with extra parameters
3823 to support policy checking and print out.
3826 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
3827 Nehemiah processors. These extensions support AES encryption in hardware
3828 as well as RNG (though RNG support is currently disabled).
3829 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
3831 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
3834 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
3835 [Andy Polyakov and a number of other people]
3837 *) Improved PowerPC platform support. Most notably BIGNUM assembler
3838 implementation contributed by IBM.
3839 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
3841 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
3842 exponent rather than 'unsigned long'. There is a corresponding change to
3843 the new 'rsa_keygen' element of the RSA_METHOD structure.
3844 [Jelte Jansen, Geoff Thorpe]
3846 *) Functionality for creating the initial serial number file is now
3847 moved from CA.pl to the 'ca' utility with a new option -create_serial.
3849 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
3850 number file to 1, which is bound to cause problems. To avoid
3851 the problems while respecting compatibility between different 0.9.7
3852 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
3853 CA.pl for serial number initialization. With the new release 0.9.8,
3854 we can fix the problem directly in the 'ca' utility.)
3857 *) Reduced header interdepencies by declaring more opaque objects in
3858 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
3859 give fewer recursive includes, which could break lazy source code - so
3860 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
3861 developers should define this symbol when building and using openssl to
3862 ensure they track the recommended behaviour, interfaces, [etc], but
3863 backwards-compatible behaviour prevails when this isn't defined.
3866 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
3869 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
3870 This will generate a random key of the appropriate length based on the
3871 cipher context. The EVP_CIPHER can provide its own random key generation
3872 routine to support keys of a specific form. This is used in the des and
3873 3des routines to generate a key of the correct parity. Update S/MIME
3874 code to use new functions and hence generate correct parity DES keys.
3875 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
3876 valid (weak or incorrect parity).
3879 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
3880 as looking them up. This is useful when the verified structure may contain
3881 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
3882 present unless the new PKCS7_NO_CRL flag is asserted.
3885 *) Extend ASN1 oid configuration module. It now additionally accepts the
3888 shortName = some long name, 1.2.3.4
3891 *) Reimplemented the BN_CTX implementation. There is now no more static
3892 limitation on the number of variables it can handle nor the depth of the
3893 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
3894 information can now expand as required, and rather than having a single
3895 static array of bignums, BN_CTX now uses a linked-list of such arrays
3896 allowing it to expand on demand whilst maintaining the usefulness of
3897 BN_CTX's "bundling".
3900 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
3901 to allow all RSA operations to function using a single BN_CTX.
3904 *) Preliminary support for certificate policy evaluation and checking. This
3905 is initially intended to pass the tests outlined in "Conformance Testing
3906 of Relying Party Client Certificate Path Processing Logic" v1.07.
3909 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
3910 remained unused and not that useful. A variety of other little bignum
3911 tweaks and fixes have also been made continuing on from the audit (see
3915 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
3916 associated ASN1, EVP and SSL functions and old ASN1 macros.
3919 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
3920 and this should never fail. So the return value from the use of
3921 BN_set_word() (which can fail due to needless expansion) is now deprecated;
3922 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
3925 *) BN_CTX_get() should return zero-valued bignums, providing the same
3926 initialised value as BN_new().
3927 [Geoff Thorpe, suggested by Ulf Möller]
3929 *) Support for inhibitAnyPolicy certificate extension.
3932 *) An audit of the BIGNUM code is underway, for which debugging code is
3933 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
3934 is considered valid when processing BIGNUMs, and causes execution to
3935 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
3936 further steps are taken to deliberately pollute unused data in BIGNUM
3937 structures to try and expose faulty code further on. For now, openssl will
3938 (in its default mode of operation) continue to tolerate the inconsistent
3939 forms that it has tolerated in the past, but authors and packagers should
3940 consider trying openssl and their own applications when compiled with
3941 these debugging symbols defined. It will help highlight potential bugs in
3942 their own code, and will improve the test coverage for OpenSSL itself. At
3943 some point, these tighter rules will become openssl's default to improve
3944 maintainability, though the assert()s and other overheads will remain only
3945 in debugging configurations. See bn.h for more details.
3946 [Geoff Thorpe, Nils Larsch, Ulf Möller]
3948 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
3949 that can only be obtained through BN_CTX_new() (which implicitly
3950 initialises it). The presence of this function only made it possible
3951 to overwrite an existing structure (and cause memory leaks).
3954 *) Because of the callback-based approach for implementing LHASH as a
3955 template type, lh_insert() adds opaque objects to hash-tables and
3956 lh_doall() or lh_doall_arg() are typically used with a destructor callback
3957 to clean up those corresponding objects before destroying the hash table
3958 (and losing the object pointers). So some over-zealous constifications in
3959 LHASH have been relaxed so that lh_insert() does not take (nor store) the
3960 objects as "const" and the lh_doall[_arg] callback wrappers are not
3961 prototyped to have "const" restrictions on the object pointers they are
3962 given (and so aren't required to cast them away any more).
3965 *) The tmdiff.h API was so ugly and minimal that our own timing utility
3966 (speed) prefers to use its own implementation. The two implementations
3967 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
3968 its object type properly exposed (MS_TM) instead of casting to/from "char
3969 *". This may still change yet if someone realises MS_TM and "ms_time_***"
3970 aren't necessarily the greatest nomenclatures - but this is what was used
3971 internally to the implementation so I've used that for now.
3974 *) Ensure that deprecated functions do not get compiled when
3975 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
3976 the self-tests were still using deprecated key-generation functions so
3977 these have been updated also.
3980 *) Reorganise PKCS#7 code to separate the digest location functionality
3981 into PKCS7_find_digest(), digest addition into PKCS7_bio_add_digest().
3982 New function PKCS7_set_digest() to set the digest type for PKCS#7
3983 digestedData type. Add additional code to correctly generate the
3984 digestedData type and add support for this type in PKCS7 initialization
3988 *) New function PKCS7_set0_type_other() this initializes a PKCS7
3989 structure of type "other".
3992 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
3993 sure the loop does correctly stop and breaking ("division by zero")
3994 modulus operations are not performed. The (pre-generated) prime
3995 table crypto/bn/bn_prime.h was already correct, but it could not be
3996 re-generated on some platforms because of the "division by zero"
3997 situation in the script.
3998 [Ralf S. Engelschall]
4000 *) Update support for ECC-based TLS ciphersuites according to
4001 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
4002 SHA-1 now is only used for "small" curves (where the
4003 representation of a field element takes up to 24 bytes); for
4004 larger curves, the field element resulting from ECDH is directly
4005 used as premaster secret.
4006 [Douglas Stebila (Sun Microsystems Laboratories)]
4008 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
4009 curve secp160r1 to the tests.
4010 [Douglas Stebila (Sun Microsystems Laboratories)]
4012 *) Add the possibility to load symbols globally with DSO.
4013 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
4015 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
4016 control of the error stack.
4019 *) Add support for STORE in ENGINE.
4022 *) Add the STORE type. The intention is to provide a common interface
4023 to certificate and key stores, be they simple file-based stores, or
4024 HSM-type store, or LDAP stores, or...
4025 NOTE: The code is currently UNTESTED and isn't really used anywhere.
4028 *) Add a generic structure called OPENSSL_ITEM. This can be used to
4029 pass a list of arguments to any function as well as provide a way
4030 for a function to pass data back to the caller.
4033 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
4034 works like BUF_strdup() but can be used to duplicate a portion of
4035 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
4039 *) Add the function sk_find_ex() which works like sk_find(), but will
4040 return an index to an element even if an exact match couldn't be
4041 found. The index is guaranteed to point at the element where the
4042 searched-for key would be inserted to preserve sorting order.
4045 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
4046 takes an extra flags argument for optional functionality. Currently,
4047 the following flags are defined:
4049 OBJ_BSEARCH_VALUE_ON_NOMATCH
4050 This one gets OBJ_bsearch_ex() to return a pointer to the first
4051 element where the comparing function returns a negative or zero
4054 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
4055 This one gets OBJ_bsearch_ex() to return a pointer to the first
4056 element where the comparing function returns zero. This is useful
4057 if there are more than one element where the comparing function
4061 *) Make it possible to create self-signed certificates with 'openssl ca'
4062 in such a way that the self-signed certificate becomes part of the
4063 CA database and uses the same mechanisms for serial number generation
4064 as all other certificate signing. The new flag '-selfsign' enables
4065 this functionality. Adapt CA.sh and CA.pl.in.
4068 *) Add functionality to check the public key of a certificate request
4069 against a given private. This is useful to check that a certificate
4070 request can be signed by that key (self-signing).
4073 *) Make it possible to have multiple active certificates with the same
4074 subject in the CA index file. This is done only if the keyword
4075 'unique_subject' is set to 'no' in the main CA section (default
4076 if 'CA_default') of the configuration file. The value is saved
4077 with the database itself in a separate index attribute file,
4078 named like the index file with '.attr' appended to the name.
4081 *) Generate muti valued AVAs using '+' notation in config files for
4085 *) Support for nameConstraints certificate extension.
4088 *) Support for policyConstraints certificate extension.
4091 *) Support for policyMappings certificate extension.
4094 *) Make sure the default DSA_METHOD implementation only uses its
4095 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
4096 and change its own handlers to be NULL so as to remove unnecessary
4097 indirection. This lets alternative implementations fallback to the
4098 default implementation more easily.
4101 *) Support for directoryName in GeneralName related extensions
4105 *) Make it possible to link applications using Makefile.shared.
4106 Make that possible even when linking against static libraries!
4109 *) Support for single pass processing for S/MIME signing. This now
4110 means that S/MIME signing can be done from a pipe, in addition
4111 cleartext signing (multipart/signed type) is effectively streaming
4112 and the signed data does not need to be all held in memory.
4114 This is done with a new flag PKCS7_STREAM. When this flag is set
4115 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
4116 is done after the data is output (and digests calculated) in
4117 SMIME_write_PKCS7().
4120 *) Add full support for -rpath/-R, both in shared libraries and
4121 applications, at least on the platforms where it's known how
4125 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
4126 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
4127 will now compute a table of multiples of the generator that
4128 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
4129 faster (notably in the case of a single point multiplication,
4130 scalar * generator).
4131 [Nils Larsch, Bodo Moeller]
4133 *) IPv6 support for certificate extensions. The various extensions
4134 which use the IP:a.b.c.d can now take IPv6 addresses using the
4135 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
4139 *) Added an ENGINE that implements RSA by performing private key
4140 exponentiations with the GMP library. The conversions to and from
4141 GMP's mpz_t format aren't optimised nor are any montgomery forms
4142 cached, and on x86 it appears OpenSSL's own performance has caught up.
4143 However there are likely to be other architectures where GMP could
4144 provide a boost. This ENGINE is not built in by default, but it can be
4145 specified at Configure time and should be accompanied by the necessary
4146 linker additions, eg;
4147 ./config -DOPENSSL_USE_GMP -lgmp
4150 *) "openssl engine" will not display ENGINE/DSO load failure errors when
4151 testing availability of engines with "-t" - the old behaviour is
4152 produced by increasing the feature's verbosity with "-tt".
4155 *) ECDSA routines: under certain error conditions uninitialized BN objects
4156 could be freed. Solution: make sure initialization is performed early
4157 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
4161 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
4162 and DH_METHOD (eg. by ENGINE implementations) to override the normal
4163 software implementations. For DSA and DH, parameter generation can
4164 also be overriden by providing the appropriate method callbacks.
4167 *) Change the "progress" mechanism used in key-generation and
4168 primality testing to functions that take a new BN_GENCB pointer in
4169 place of callback/argument pairs. The new API functions have "_ex"
4170 postfixes and the older functions are reimplemented as wrappers for
4171 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
4172 declarations of the old functions to help (graceful) attempts to
4173 migrate to the new functions. Also, the new key-generation API
4174 functions operate on a caller-supplied key-structure and return
4175 success/failure rather than returning a key or NULL - this is to
4176 help make "keygen" another member function of RSA_METHOD etc.
4178 Example for using the new callback interface:
4180 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
4184 BN_GENCB_set(&my_cb, my_callback, my_arg);
4186 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
4187 /* For the meaning of a, b in calls to my_callback(), see the
4188 * documentation of the function that calls the callback.
4189 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
4190 * my_callback should return 1 if it wants BN_is_prime_ex()
4191 * to continue, or 0 to stop.
4196 *) Change the ZLIB compression method to be stateful, and make it
4197 available to TLS with the number defined in
4198 draft-ietf-tls-compression-04.txt.
4201 *) Add the ASN.1 structures and functions for CertificatePair, which
4202 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
4204 CertificatePair ::= SEQUENCE {
4205 forward [0] Certificate OPTIONAL,
4206 reverse [1] Certificate OPTIONAL,
4207 -- at least one of the pair shall be present -- }
4209 Also implement the PEM functions to read and write certificate
4210 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
4212 This needed to be defined, mostly for the sake of the LDAP
4213 attribute crossCertificatePair, but may prove useful elsewhere as
4217 *) Make it possible to inhibit symlinking of shared libraries in
4218 Makefile.shared, for Cygwin's sake.
4221 *) Extend the BIGNUM API by creating a function
4222 void BN_set_negative(BIGNUM *a, int neg);
4223 and a macro that behave like
4224 int BN_is_negative(const BIGNUM *a);
4226 to avoid the need to access 'a->neg' directly in applications.
4229 *) Implement fast modular reduction for pseudo-Mersenne primes
4230 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
4231 EC_GROUP_new_curve_GFp() will now automatically use this
4233 [Nils Larsch <nla@trustcenter.de>]
4235 *) Add new lock type (CRYPTO_LOCK_BN).
4238 *) Change the ENGINE framework to automatically load engines
4239 dynamically from specific directories unless they could be
4240 found to already be built in or loaded. Move all the
4241 current engines except for the cryptodev one to a new
4243 The engines in engines/ are built as shared libraries if
4244 the "shared" options was given to ./Configure or ./config.
4245 Otherwise, they are inserted in libcrypto.a.
4246 /usr/local/ssl/engines is the default directory for dynamic
4247 engines, but that can be overriden at configure time through
4248 the usual use of --prefix and/or --openssldir, and at run
4249 time with the environment variable OPENSSL_ENGINES.
4250 [Geoff Thorpe and Richard Levitte]
4252 *) Add Makefile.shared, a helper makefile to build shared
4253 libraries. Adapt Makefile.org.
4256 *) Add version info to Win32 DLLs.
4257 [Peter 'Luna' Runestig" <peter@runestig.com>]
4259 *) Add new 'medium level' PKCS#12 API. Certificates and keys
4260 can be added using this API to created arbitrary PKCS#12
4261 files while avoiding the low level API.
4263 New options to PKCS12_create(), key or cert can be NULL and
4264 will then be omitted from the output file. The encryption
4265 algorithm NIDs can be set to -1 for no encryption, the mac
4266 iteration count can be set to 0 to omit the mac.
4268 Enhance pkcs12 utility by making the -nokeys and -nocerts
4269 options work when creating a PKCS#12 file. New option -nomac
4270 to omit the mac, NONE can be set for an encryption algorithm.
4271 New code is modified to use the enhanced PKCS12_create()
4272 instead of the low level API.
4275 *) Extend ASN1 encoder to support indefinite length constructed
4276 encoding. This can output sequences tags and octet strings in
4277 this form. Modify pk7_asn1.c to support indefinite length
4278 encoding. This is experimental and needs additional code to
4279 be useful, such as an ASN1 bio and some enhanced streaming
4282 Extend template encode functionality so that tagging is passed
4283 down to the template encoder.
4286 *) Let 'openssl req' fail if an argument to '-newkey' is not
4287 recognized instead of using RSA as a default.
4290 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
4291 As these are not official, they are not included in "ALL";
4292 the "ECCdraft" ciphersuite group alias can be used to select them.
4293 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
4295 *) Add ECDH engine support.
4296 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
4298 *) Add ECDH in new directory crypto/ecdh/.
4299 [Douglas Stebila (Sun Microsystems Laboratories)]
4301 *) Let BN_rand_range() abort with an error after 100 iterations
4302 without success (which indicates a broken PRNG).
4305 *) Change BN_mod_sqrt() so that it verifies that the input value
4306 is really the square of the return value. (Previously,
4307 BN_mod_sqrt would show GIGO behaviour.)
4310 *) Add named elliptic curves over binary fields from X9.62, SECG,
4311 and WAP/WTLS; add OIDs that were still missing.
4313 [Sheueling Chang Shantz and Douglas Stebila
4314 (Sun Microsystems Laboratories)]
4316 *) Extend the EC library for elliptic curves over binary fields
4317 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
4320 EC_GF2m_simple_method
4324 EC_GROUP_new_curve_GF2m
4325 EC_GROUP_set_curve_GF2m
4326 EC_GROUP_get_curve_GF2m
4327 EC_POINT_set_affine_coordinates_GF2m
4328 EC_POINT_get_affine_coordinates_GF2m
4329 EC_POINT_set_compressed_coordinates_GF2m
4331 Point compression for binary fields is disabled by default for
4332 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
4335 As binary polynomials are represented as BIGNUMs, various members
4336 of the EC_GROUP and EC_POINT data structures can be shared
4337 between the implementations for prime fields and binary fields;
4338 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
4339 are essentially identical to their ..._GFp counterparts.
4340 (For simplicity, the '..._GFp' prefix has been dropped from
4341 various internal method names.)
4343 An internal 'field_div' method (similar to 'field_mul' and
4344 'field_sqr') has been added; this is used only for binary fields.
4346 [Sheueling Chang Shantz and Douglas Stebila
4347 (Sun Microsystems Laboratories)]
4349 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
4350 through methods ('mul', 'precompute_mult').
4352 The generic implementations (now internally called 'ec_wNAF_mul'
4353 and 'ec_wNAF_precomputed_mult') remain the default if these
4354 methods are undefined.
4356 [Sheueling Chang Shantz and Douglas Stebila
4357 (Sun Microsystems Laboratories)]
4359 *) New function EC_GROUP_get_degree, which is defined through
4360 EC_METHOD. For curves over prime fields, this returns the bit
4361 length of the modulus.
4363 [Sheueling Chang Shantz and Douglas Stebila
4364 (Sun Microsystems Laboratories)]
4366 *) New functions EC_GROUP_dup, EC_POINT_dup.
4367 (These simply call ..._new and ..._copy).
4369 [Sheueling Chang Shantz and Douglas Stebila
4370 (Sun Microsystems Laboratories)]
4372 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
4373 Polynomials are represented as BIGNUMs (where the sign bit is not
4374 used) in the following functions [macros]:
4377 BN_GF2m_sub [= BN_GF2m_add]
4378 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
4379 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
4380 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
4382 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
4383 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
4384 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
4385 BN_GF2m_cmp [= BN_ucmp]
4387 (Note that only the 'mod' functions are actually for fields GF(2^m).
4388 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
4390 For some functions, an the irreducible polynomial defining a
4391 field can be given as an 'unsigned int[]' with strictly
4392 decreasing elements giving the indices of those bits that are set;
4393 i.e., p[] represents the polynomial
4394 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
4396 p[0] > p[1] > ... > p[k] = 0.
4397 This applies to the following functions:
4402 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
4403 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
4405 BN_GF2m_mod_sqrt_arr
4406 BN_GF2m_mod_solve_quad_arr
4410 Conversion can be performed by the following functions:
4415 bntest.c has additional tests for binary polynomial arithmetic.
4417 Two implementations for BN_GF2m_mod_div() are available.
4418 The default algorithm simply uses BN_GF2m_mod_inv() and
4419 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
4420 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
4421 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
4423 [Sheueling Chang Shantz and Douglas Stebila
4424 (Sun Microsystems Laboratories)]
4426 *) Add new error code 'ERR_R_DISABLED' that can be used when some
4427 functionality is disabled at compile-time.
4428 [Douglas Stebila <douglas.stebila@sun.com>]
4430 *) Change default behaviour of 'openssl asn1parse' so that more
4431 information is visible when viewing, e.g., a certificate:
4433 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
4434 mode the content of non-printable OCTET STRINGs is output in a
4435 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
4436 avoid the appearance of a printable string.
4437 [Nils Larsch <nla@trustcenter.de>]
4439 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
4441 EC_GROUP_set_asn1_flag()
4442 EC_GROUP_get_asn1_flag()
4443 EC_GROUP_set_point_conversion_form()
4444 EC_GROUP_get_point_conversion_form()
4445 These control ASN1 encoding details:
4446 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
4447 has been set to OPENSSL_EC_NAMED_CURVE.
4448 - Points are encoded in uncompressed form by default; options for
4449 asn1_for are as for point2oct, namely
4450 POINT_CONVERSION_COMPRESSED
4451 POINT_CONVERSION_UNCOMPRESSED
4452 POINT_CONVERSION_HYBRID
4454 Also add 'seed' and 'seed_len' members to EC_GROUP with access
4457 EC_GROUP_get0_seed()
4458 EC_GROUP_get_seed_len()
4459 This is used only for ASN1 purposes (so far).
4460 [Nils Larsch <nla@trustcenter.de>]
4462 *) Add 'field_type' member to EC_METHOD, which holds the NID
4463 of the appropriate field type OID. The new function
4464 EC_METHOD_get_field_type() returns this value.
4465 [Nils Larsch <nla@trustcenter.de>]
4470 EC_POINT_point2hex()
4471 EC_POINT_hex2point()
4472 providing useful interfaces to EC_POINT_point2oct() and
4473 EC_POINT_oct2point().
4474 [Nils Larsch <nla@trustcenter.de>]
4476 *) Change internals of the EC library so that the functions
4477 EC_GROUP_set_generator()
4478 EC_GROUP_get_generator()
4479 EC_GROUP_get_order()
4480 EC_GROUP_get_cofactor()
4481 are implemented directly in crypto/ec/ec_lib.c and not dispatched
4482 to methods, which would lead to unnecessary code duplication when
4483 adding different types of curves.
4484 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
4486 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
4487 arithmetic, and such that modified wNAFs are generated
4488 (which avoid length expansion in many cases).
4491 *) Add a function EC_GROUP_check_discriminant() (defined via
4492 EC_METHOD) that verifies that the curve discriminant is non-zero.
4494 Add a function EC_GROUP_check() that makes some sanity tests
4495 on a EC_GROUP, its generator and order. This includes
4496 EC_GROUP_check_discriminant().
4497 [Nils Larsch <nla@trustcenter.de>]
4499 *) Add ECDSA in new directory crypto/ecdsa/.
4501 Add applications 'openssl ecparam' and 'openssl ecdsa'
4502 (these are based on 'openssl dsaparam' and 'openssl dsa').
4504 ECDSA support is also included in various other files across the
4505 library. Most notably,
4506 - 'openssl req' now has a '-newkey ecdsa:file' option;
4507 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
4508 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
4509 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
4510 them suitable for ECDSA where domain parameters must be
4511 extracted before the specific public key;
4512 - ECDSA engine support has been added.
4513 [Nils Larsch <nla@trustcenter.de>]
4515 *) Include some named elliptic curves, and add OIDs from X9.62,
4516 SECG, and WAP/WTLS. Each curve can be obtained from the new
4518 EC_GROUP_new_by_curve_name(),
4519 and the list of available named curves can be obtained with
4520 EC_get_builtin_curves().
4521 Also add a 'curve_name' member to EC_GROUP objects, which can be
4523 EC_GROUP_set_curve_name()
4524 EC_GROUP_get_curve_name()
4525 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
4527 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
4528 was actually never needed) and in BN_mul(). The removal in BN_mul()
4529 required a small change in bn_mul_part_recursive() and the addition
4530 of the functions bn_cmp_part_words(), bn_sub_part_words() and
4531 bn_add_part_words(), which do the same thing as bn_cmp_words(),
4532 bn_sub_words() and bn_add_words() except they take arrays with
4536 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
4538 *) Cleanse PEM buffers before freeing them since they may contain
4540 [Benjamin Bennett <ben@psc.edu>]
4542 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
4543 a ciphersuite string such as "DEFAULT:RSA" cannot enable
4544 authentication-only ciphersuites.
4547 *) Since AES128 and AES256 share a single mask bit in the logic of
4548 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
4549 kludge to work properly if AES128 is available and AES256 isn't.
4552 *) Expand security boundary to match 1.1.1 module.
4555 *) Remove redundant features: hash file source, editing of test vectors
4556 modify fipsld to use external fips_premain.c signature.
4559 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
4560 run algorithm test programs.
4563 *) Make algorithm test programs more tolerant of whitespace.
4566 *) Have SSL/TLS server implementation tolerate "mismatched" record
4567 protocol version while receiving ClientHello even if the
4568 ClientHello is fragmented. (The server can't insist on the
4569 particular protocol version it has chosen before the ServerHello
4570 message has informed the client about his choice.)
4573 *) Load error codes if they are not already present instead of using a
4574 static variable. This allows them to be cleanly unloaded and reloaded.
4577 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
4579 *) Introduce limits to prevent malicious keys being able to
4580 cause a denial of service. (CVE-2006-2940)
4581 [Steve Henson, Bodo Moeller]
4583 *) Fix ASN.1 parsing of certain invalid structures that can result
4584 in a denial of service. (CVE-2006-2937) [Steve Henson]
4586 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
4587 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
4589 *) Fix SSL client code which could crash if connecting to a
4590 malicious SSLv2 server. (CVE-2006-4343)
4591 [Tavis Ormandy and Will Drewry, Google Security Team]
4593 *) Change ciphersuite string processing so that an explicit
4594 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
4595 will no longer include "AES128-SHA"), and any other similar
4596 ciphersuite (same bitmap) from *other* protocol versions (so that
4597 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
4598 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
4599 changes from 0.9.8b and 0.9.8d.
4602 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
4604 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
4605 (CVE-2006-4339) [Ben Laurie and Google Security Team]
4607 *) Change the Unix randomness entropy gathering to use poll() when
4608 possible instead of select(), since the latter has some
4609 undesirable limitations.
4610 [Darryl Miles via Richard Levitte and Bodo Moeller]
4612 *) Disable rogue ciphersuites:
4614 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
4615 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
4616 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
4618 The latter two were purportedly from
4619 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
4622 Also deactive the remaining ciphersuites from
4623 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
4624 unofficial, and the ID has long expired.
4627 *) Fix RSA blinding Heisenbug (problems sometimes occured on
4628 dual-core machines) and other potential thread-safety issues.
4631 Changes between 0.9.7i and 0.9.7j [04 May 2006]
4633 *) Adapt fipsld and the build system to link against the validated FIPS
4634 module in FIPS mode.
4637 *) Fixes for VC++ 2005 build under Windows.
4640 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
4641 from a Windows bash shell such as MSYS. It is autodetected from the
4642 "config" script when run from a VC++ environment. Modify standard VC++
4643 build to use fipscanister.o from the GNU make build.
4646 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
4648 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
4649 The value now differs depending on if you build for FIPS or not.
4650 BEWARE! A program linked with a shared FIPSed libcrypto can't be
4651 safely run with a non-FIPSed libcrypto, as it may crash because of
4652 the difference induced by this change.
4655 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
4657 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
4658 (part of SSL_OP_ALL). This option used to disable the
4659 countermeasure against man-in-the-middle protocol-version
4660 rollback in the SSL 2.0 server implementation, which is a bad
4661 idea. (CVE-2005-2969)
4663 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
4664 for Information Security, National Institute of Advanced Industrial
4665 Science and Technology [AIST], Japan)]
4667 *) Minimal support for X9.31 signatures and PSS padding modes. This is
4668 mainly for FIPS compliance and not fully integrated at this stage.
4671 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
4672 the exponentiation using a fixed-length exponent. (Otherwise,
4673 the information leaked through timing could expose the secret key
4674 after many signatures; cf. Bleichenbacher's attack on DSA with
4678 *) Make a new fixed-window mod_exp implementation the default for
4679 RSA, DSA, and DH private-key operations so that the sequence of
4680 squares and multiplies and the memory access pattern are
4681 independent of the particular secret key. This will mitigate
4682 cache-timing and potential related attacks.
4684 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
4685 and this is automatically used by BN_mod_exp_mont() if the new flag
4686 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
4687 will use this BN flag for private exponents unless the flag
4688 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
4689 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
4691 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
4693 *) Change the client implementation for SSLv23_method() and
4694 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
4695 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
4696 (Previously, the SSL 2.0 backwards compatible Client Hello
4697 message format would be used even with SSL_OP_NO_SSLv2.)
4700 *) Add support for smime-type MIME parameter in S/MIME messages which some
4704 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
4705 a threadsafe manner. Modify rsa code to use new function and add calls
4706 to dsa and dh code (which had race conditions before).
4709 *) Include the fixed error library code in the C error file definitions
4710 instead of fixing them up at runtime. This keeps the error code
4711 structures constant.
4714 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
4716 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
4719 *) Fixes for newer kerberos headers. NB: the casts are needed because
4720 the 'length' field is signed on one version and unsigned on another
4721 with no (?) obvious way to tell the difference, without these VC++
4722 complains. Also the "definition" of FAR (blank) is no longer included
4723 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
4724 some needed definitions.
4727 *) Undo Cygwin change.
4730 *) Added support for proxy certificates according to RFC 3820.
4731 Because they may be a security thread to unaware applications,
4732 they must be explicitely allowed in run-time. See
4733 docs/HOWTO/proxy_certificates.txt for further information.
4736 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
4738 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
4739 server and client random values. Previously
4740 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
4741 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
4743 This change has negligible security impact because:
4745 1. Server and client random values still have 24 bytes of pseudo random
4748 2. Server and client random values are sent in the clear in the initial
4751 3. The master secret is derived using the premaster secret (48 bytes in
4752 size for static RSA ciphersuites) as well as client server and random
4755 The OpenSSL team would like to thank the UK NISCC for bringing this issue
4758 [Stephen Henson, reported by UK NISCC]
4760 *) Use Windows randomness collection on Cygwin.
4763 *) Fix hang in EGD/PRNGD query when communication socket is closed
4764 prematurely by EGD/PRNGD.
4765 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
4767 *) Prompt for pass phrases when appropriate for PKCS12 input format.
4770 *) Back-port of selected performance improvements from development
4771 branch, as well as improved support for PowerPC platforms.
4774 *) Add lots of checks for memory allocation failure, error codes to indicate
4775 failure and freeing up memory if a failure occurs.
4776 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
4778 *) Add new -passin argument to dgst.
4781 *) Perform some character comparisons of different types in X509_NAME_cmp:
4782 this is needed for some certificates that reencode DNs into UTF8Strings
4783 (in violation of RFC3280) and can't or wont issue name rollover
4787 *) Make an explicit check during certificate validation to see that
4788 the CA setting in each certificate on the chain is correct. As a
4789 side effect always do the following basic checks on extensions,
4790 not just when there's an associated purpose to the check:
4792 - if there is an unhandled critical extension (unless the user
4793 has chosen to ignore this fault)
4794 - if the path length has been exceeded (if one is set at all)
4795 - that certain extensions fit the associated purpose (if one has
4799 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
4801 *) Avoid a race condition when CRLs are checked in a multi threaded
4802 environment. This would happen due to the reordering of the revoked
4803 entries during signature checking and serial number lookup. Now the
4804 encoding is cached and the serial number sort performed under a lock.
4805 Add new STACK function sk_is_sorted().
4808 *) Add Delta CRL to the extension code.
4811 *) Various fixes to s3_pkt.c so alerts are sent properly.
4812 [David Holmes <d.holmes@f5.com>]
4814 *) Reduce the chances of duplicate issuer name and serial numbers (in
4815 violation of RFC3280) using the OpenSSL certificate creation utilities.
4816 This is done by creating a random 64 bit value for the initial serial
4817 number when a serial number file is created or when a self signed
4818 certificate is created using 'openssl req -x509'. The initial serial
4819 number file is created using 'openssl x509 -next_serial' in CA.pl
4820 rather than being initialized to 1.
4823 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
4825 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
4826 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
4827 [Joe Orton, Steve Henson]
4829 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
4831 [Joe Orton, Steve Henson]
4833 *) Make it possible to have multiple active certificates with the same
4834 subject in the CA index file. This is done only if the keyword
4835 'unique_subject' is set to 'no' in the main CA section (default
4836 if 'CA_default') of the configuration file. The value is saved
4837 with the database itself in a separate index attribute file,
4838 named like the index file with '.attr' appended to the name.
4841 *) X509 verify fixes. Disable broken certificate workarounds when
4842 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
4843 keyUsage extension present. Don't accept CRLs with unhandled critical
4844 extensions: since verify currently doesn't process CRL extensions this
4845 rejects a CRL with *any* critical extensions. Add new verify error codes
4849 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
4850 A clarification of RFC2560 will require the use of OCTET STRINGs and
4851 some implementations cannot handle the current raw format. Since OpenSSL
4852 copies and compares OCSP nonces as opaque blobs without any attempt at
4853 parsing them this should not create any compatibility issues.
4856 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
4857 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
4858 this HMAC (and other) operations are several times slower than OpenSSL
4862 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
4863 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
4865 *) Use the correct content when signing type "other".
4868 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
4870 *) Fix various bugs revealed by running the NISCC test suite:
4872 Stop out of bounds reads in the ASN1 code when presented with
4873 invalid tags (CVE-2003-0543 and CVE-2003-0544).
4875 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
4877 If verify callback ignores invalid public key errors don't try to check
4878 certificate signature with the NULL public key.
4882 *) New -ignore_err option in ocsp application to stop the server
4883 exiting on the first error in a request.
4886 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
4887 if the server requested one: as stated in TLS 1.0 and SSL 3.0
4891 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
4892 extra data after the compression methods not only for TLS 1.0
4893 but also for SSL 3.0 (as required by the specification).
4894 [Bodo Moeller; problem pointed out by Matthias Loepfe]
4896 *) Change X509_certificate_type() to mark the key as exported/exportable
4897 when it's 512 *bits* long, not 512 bytes.
4900 *) Change AES_cbc_encrypt() so it outputs exact multiple of
4901 blocks during encryption.
4904 *) Various fixes to base64 BIO and non blocking I/O. On write
4905 flushes were not handled properly if the BIO retried. On read
4906 data was not being buffered properly and had various logic bugs.
4907 This also affects blocking I/O when the data being decoded is a
4911 *) Various S/MIME bugfixes and compatibility changes:
4912 output correct application/pkcs7 MIME type if
4913 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
4914 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
4915 of files as .eml work). Correctly handle very long lines in MIME
4919 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
4921 *) Countermeasure against the Klima-Pokorny-Rosa extension of
4922 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
4923 a protocol version number mismatch like a decryption error
4924 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
4927 *) Turn on RSA blinding by default in the default implementation
4928 to avoid a timing attack. Applications that don't want it can call
4929 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
4930 They would be ill-advised to do so in most cases.
4931 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
4933 *) Change RSA blinding code so that it works when the PRNG is not
4934 seeded (in this case, the secret RSA exponent is abused as
4935 an unpredictable seed -- if it is not unpredictable, there
4936 is no point in blinding anyway). Make RSA blinding thread-safe
4937 by remembering the creator's thread ID in rsa->blinding and
4938 having all other threads use local one-time blinding factors
4939 (this requires more computation than sharing rsa->blinding, but
4940 avoids excessive locking; and if an RSA object is not shared
4941 between threads, blinding will still be very fast).
4944 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
4945 ENGINE as defaults for all supported algorithms irrespective of
4946 the 'flags' parameter. 'flags' is now honoured, so applications
4947 should make sure they are passing it correctly.
4950 *) Target "mingw" now allows native Windows code to be generated in
4951 the Cygwin environment as well as with the MinGW compiler.
4954 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
4956 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
4957 via timing by performing a MAC computation even if incorrect
4958 block cipher padding has been found. This is a countermeasure
4959 against active attacks where the attacker has to distinguish
4960 between bad padding and a MAC verification error. (CVE-2003-0078)
4962 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
4963 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
4964 Martin Vuagnoux (EPFL, Ilion)]
4966 *) Make the no-err option work as intended. The intention with no-err
4967 is not to have the whole error stack handling routines removed from
4968 libcrypto, it's only intended to remove all the function name and
4969 reason texts, thereby removing some of the footprint that may not
4970 be interesting if those errors aren't displayed anyway.
4972 NOTE: it's still possible for any application or module to have it's
4973 own set of error texts inserted. The routines are there, just not
4974 used by default when no-err is given.
4977 *) Add support for FreeBSD on IA64.
4978 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
4980 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
4981 Kerberos function mit_des_cbc_cksum(). Before this change,
4982 the value returned by DES_cbc_cksum() was like the one from
4983 mit_des_cbc_cksum(), except the bytes were swapped.
4984 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
4986 *) Allow an application to disable the automatic SSL chain building.
4987 Before this a rather primitive chain build was always performed in
4988 ssl3_output_cert_chain(): an application had no way to send the
4989 correct chain if the automatic operation produced an incorrect result.
4991 Now the chain builder is disabled if either:
4993 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
4995 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
4997 The reasoning behind this is that an application would not want the
4998 auto chain building to take place if extra chain certificates are
4999 present and it might also want a means of sending no additional
5000 certificates (for example the chain has two certificates and the
5004 *) Add the possibility to build without the ENGINE framework.
5005 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
5007 *) Under Win32 gmtime() can return NULL: check return value in
5008 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
5011 *) DSA routines: under certain error conditions uninitialized BN objects
5012 could be freed. Solution: make sure initialization is performed early
5013 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
5014 Nils Larsch <nla@trustcenter.de> via PR#459)
5017 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
5018 checked on reconnect on the client side, therefore session resumption
5019 could still fail with a "ssl session id is different" error. This
5020 behaviour is masked when SSL_OP_ALL is used due to
5021 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
5022 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
5023 followup to PR #377.
5026 *) IA-32 assembler support enhancements: unified ELF targets, support
5027 for SCO/Caldera platforms, fix for Cygwin shared build.
5030 *) Add support for FreeBSD on sparc64. As a consequence, support for
5031 FreeBSD on non-x86 processors is separate from x86 processors on
5032 the config script, much like the NetBSD support.
5033 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
5035 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
5037 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
5040 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
5041 code (06) was taken as the first octet of the session ID and the last
5042 octet was ignored consequently. As a result SSLv2 client side session
5043 caching could not have worked due to the session ID mismatch between
5045 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
5049 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
5050 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
5054 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
5055 seems that in spite of existing for more than a year, many application
5056 author have done nothing to provide the necessary callbacks, which
5057 means that this particular engine will not work properly anywhere.
5058 This is a very unfortunate situation which forces us, in the name
5059 of usability, to give the hw_ncipher.c a static lock, which is part
5061 NOTE: This is for the 0.9.7 series ONLY. This hack will never
5062 appear in 0.9.8 or later. We EXPECT application authors to have
5063 dealt properly with this when 0.9.8 is released (unless we actually
5064 make such changes in the libcrypto locking code that changes will
5065 have to be made anyway).
5068 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
5069 octets have been read, EOF or an error occurs. Without this change
5070 some truncated ASN1 structures will not produce an error.
5073 *) Disable Heimdal support, since it hasn't been fully implemented.
5074 Still give the possibility to force the use of Heimdal, but with
5075 warnings and a request that patches get sent to openssl-dev.
5078 *) Add the VC-CE target, introduce the WINCE sysname, and add
5079 INSTALL.WCE and appropriate conditionals to make it build.
5080 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
5082 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
5083 cygssl-x.y.z.dll, where x, y and z are the major, minor and
5084 edit numbers of the version.
5085 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
5087 *) Introduce safe string copy and catenation functions
5088 (BUF_strlcpy() and BUF_strlcat()).
5089 [Ben Laurie (CHATS) and Richard Levitte]
5091 *) Avoid using fixed-size buffers for one-line DNs.
5092 [Ben Laurie (CHATS)]
5094 *) Add BUF_MEM_grow_clean() to avoid information leakage when
5095 resizing buffers containing secrets, and use where appropriate.
5096 [Ben Laurie (CHATS)]
5098 *) Avoid using fixed size buffers for configuration file location.
5099 [Ben Laurie (CHATS)]
5101 *) Avoid filename truncation for various CA files.
5102 [Ben Laurie (CHATS)]
5104 *) Use sizeof in preference to magic numbers.
5105 [Ben Laurie (CHATS)]
5107 *) Avoid filename truncation in cert requests.
5108 [Ben Laurie (CHATS)]
5110 *) Add assertions to check for (supposedly impossible) buffer
5112 [Ben Laurie (CHATS)]
5114 *) Don't cache truncated DNS entries in the local cache (this could
5115 potentially lead to a spoofing attack).
5116 [Ben Laurie (CHATS)]
5118 *) Fix various buffers to be large enough for hex/decimal
5119 representations in a platform independent manner.
5120 [Ben Laurie (CHATS)]
5122 *) Add CRYPTO_realloc_clean() to avoid information leakage when
5123 resizing buffers containing secrets, and use where appropriate.
5124 [Ben Laurie (CHATS)]
5126 *) Add BIO_indent() to avoid much slightly worrying code to do
5128 [Ben Laurie (CHATS)]
5130 *) Convert sprintf()/BIO_puts() to BIO_printf().
5131 [Ben Laurie (CHATS)]
5133 *) buffer_gets() could terminate with the buffer only half
5135 [Ben Laurie (CHATS)]
5137 *) Add assertions to prevent user-supplied crypto functions from
5138 overflowing internal buffers by having large block sizes, etc.
5139 [Ben Laurie (CHATS)]
5141 *) New OPENSSL_assert() macro (similar to assert(), but enabled
5143 [Ben Laurie (CHATS)]
5145 *) Eliminate unused copy of key in RC4.
5146 [Ben Laurie (CHATS)]
5148 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
5149 [Ben Laurie (CHATS)]
5151 *) Fix off-by-one error in EGD path.
5152 [Ben Laurie (CHATS)]
5154 *) If RANDFILE path is too long, ignore instead of truncating.
5155 [Ben Laurie (CHATS)]
5157 *) Eliminate unused and incorrectly sized X.509 structure
5159 [Ben Laurie (CHATS)]
5161 *) Eliminate unused and dangerous function knumber().
5162 [Ben Laurie (CHATS)]
5164 *) Eliminate unused and dangerous structure, KSSL_ERR.
5165 [Ben Laurie (CHATS)]
5167 *) Protect against overlong session ID context length in an encoded
5168 session object. Since these are local, this does not appear to be
5170 [Ben Laurie (CHATS)]
5172 *) Change from security patch (see 0.9.6e below) that did not affect
5173 the 0.9.6 release series:
5175 Remote buffer overflow in SSL3 protocol - an attacker could
5176 supply an oversized master key in Kerberos-enabled versions.
5178 [Ben Laurie (CHATS)]
5180 *) Change the SSL kerb5 codes to match RFC 2712.
5183 *) Make -nameopt work fully for req and add -reqopt switch.
5184 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
5186 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
5187 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
5189 *) Make sure tests can be performed even if the corresponding algorithms
5190 have been removed entirely. This was also the last step to make
5191 OpenSSL compilable with DJGPP under all reasonable conditions.
5192 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
5194 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
5195 to allow version independent disabling of normally unselected ciphers,
5196 which may be activated as a side-effect of selecting a single cipher.
5198 (E.g., cipher list string "RSA" enables ciphersuites that are left
5199 out of "ALL" because they do not provide symmetric encryption.
5200 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
5201 [Lutz Jaenicke, Bodo Moeller]
5203 *) Add appropriate support for separate platform-dependent build
5204 directories. The recommended way to make a platform-dependent
5205 build directory is the following (tested on Linux), maybe with
5208 # Place yourself outside of the OpenSSL source tree. In
5209 # this example, the environment variable OPENSSL_SOURCE
5210 # is assumed to contain the absolute OpenSSL source directory.
5211 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
5212 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
5213 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
5214 mkdir -p `dirname $F`
5215 ln -s $OPENSSL_SOURCE/$F $F
5218 To be absolutely sure not to disturb the source tree, a "make clean"
5219 is a good thing. If it isn't successful, don't worry about it,
5220 it probably means the source directory is very clean.
5223 *) Make sure any ENGINE control commands make local copies of string
5224 pointers passed to them whenever necessary. Otherwise it is possible
5225 the caller may have overwritten (or deallocated) the original string
5226 data when a later ENGINE operation tries to use the stored values.
5227 [Götz Babin-Ebell <babinebell@trustcenter.de>]
5229 *) Improve diagnostics in file reading and command-line digests.
5230 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
5232 *) Add AES modes CFB and OFB to the object database. Correct an
5233 error in AES-CFB decryption.
5236 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
5237 allows existing EVP_CIPHER_CTX structures to be reused after
5238 calling EVP_*Final(). This behaviour is used by encryption
5239 BIOs and some applications. This has the side effect that
5240 applications must explicitly clean up cipher contexts with
5241 EVP_CIPHER_CTX_cleanup() or they will leak memory.
5244 *) Check the values of dna and dnb in bn_mul_recursive before calling
5245 bn_mul_comba (a non zero value means the a or b arrays do not contain
5246 n2 elements) and fallback to bn_mul_normal if either is not zero.
5249 *) Fix escaping of non-ASCII characters when using the -subj option
5250 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
5253 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
5254 form for "surname", serialNumber has no short form.
5255 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
5256 therefore remove "mail" short name for "internet 7".
5257 The OID for unique identifiers in X509 certificates is
5258 x500UniqueIdentifier, not uniqueIdentifier.
5259 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
5262 *) Add an "init" command to the ENGINE config module and auto initialize
5263 ENGINEs. Without any "init" command the ENGINE will be initialized
5264 after all ctrl commands have been executed on it. If init=1 the
5265 ENGINE is initailized at that point (ctrls before that point are run
5266 on the uninitialized ENGINE and after on the initialized one). If
5267 init=0 then the ENGINE will not be iniatialized at all.
5270 *) Fix the 'app_verify_callback' interface so that the user-defined
5271 argument is actually passed to the callback: In the
5272 SSL_CTX_set_cert_verify_callback() prototype, the callback
5273 declaration has been changed from
5276 int (*cb)(X509_STORE_CTX *,void *);
5277 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
5278 i=s->ctx->app_verify_callback(&ctx)
5279 has been changed into
5280 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
5282 To update applications using SSL_CTX_set_cert_verify_callback(),
5283 a dummy argument can be added to their callback functions.
5284 [D. K. Smetters <smetters@parc.xerox.com>]
5286 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
5287 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
5289 *) Add and OPENSSL_LOAD_CONF define which will cause
5290 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
5291 This allows older applications to transparently support certain
5292 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
5293 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
5294 load the config file and OPENSSL_add_all_algorithms_conf() which will
5295 always load it have also been added.
5298 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
5299 Adjust NIDs and EVP layer.
5300 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
5302 *) Config modules support in openssl utility.
5304 Most commands now load modules from the config file,
5305 though in a few (such as version) this isn't done
5306 because it couldn't be used for anything.
5308 In the case of ca and req the config file used is
5309 the same as the utility itself: that is the -config
5310 command line option can be used to specify an
5314 *) Move default behaviour from OPENSSL_config(). If appname is NULL
5315 use "openssl_conf" if filename is NULL use default openssl config file.
5318 *) Add an argument to OPENSSL_config() to allow the use of an alternative
5319 config section name. Add a new flag to tolerate a missing config file
5320 and move code to CONF_modules_load_file().
5323 *) Support for crypto accelerator cards from Accelerated Encryption
5324 Processing, www.aep.ie. (Use engine 'aep')
5325 The support was copied from 0.9.6c [engine] and adapted/corrected
5326 to work with the new engine framework.
5327 [AEP Inc. and Richard Levitte]
5329 *) Support for SureWare crypto accelerator cards from Baltimore
5330 Technologies. (Use engine 'sureware')
5331 The support was copied from 0.9.6c [engine] and adapted
5332 to work with the new engine framework.
5335 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
5336 make the newer ENGINE framework commands for the CHIL engine work.
5337 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
5339 *) Make it possible to produce shared libraries on ReliantUNIX.
5340 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
5342 *) Add the configuration target debug-linux-ppro.
5343 Make 'openssl rsa' use the general key loading routines
5344 implemented in apps.c, and make those routines able to
5345 handle the key format FORMAT_NETSCAPE and the variant
5347 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
5349 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
5350 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
5352 *) Add -keyform to rsautl, and document -engine.
5353 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
5355 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
5356 BIO_R_NO_SUCH_FILE error code rather than the generic
5357 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
5360 *) Add new functions
5362 ERR_peek_last_error_line
5363 ERR_peek_last_error_line_data.
5364 These are similar to
5367 ERR_peek_error_line_data,
5368 but report on the latest error recorded rather than the first one
5369 still in the error queue.
5370 [Ben Laurie, Bodo Moeller]
5372 *) default_algorithms option in ENGINE config module. This allows things
5374 default_algorithms = ALL
5375 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
5378 *) Preliminary ENGINE config module.
5381 *) New experimental application configuration code.
5384 *) Change the AES code to follow the same name structure as all other
5385 symmetric ciphers, and behave the same way. Move everything to
5386 the directory crypto/aes, thereby obsoleting crypto/rijndael.
5387 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
5389 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
5390 [Ben Laurie and Theo de Raadt]
5392 *) Add option to output public keys in req command.
5393 [Massimiliano Pala madwolf@openca.org]
5395 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
5396 (up to about 10% better than before for P-192 and P-224).
5399 *) New functions/macros
5401 SSL_CTX_set_msg_callback(ctx, cb)
5402 SSL_CTX_set_msg_callback_arg(ctx, arg)
5403 SSL_set_msg_callback(ssl, cb)
5404 SSL_set_msg_callback_arg(ssl, arg)
5406 to request calling a callback function
5408 void cb(int write_p, int version, int content_type,
5409 const void *buf, size_t len, SSL *ssl, void *arg)
5411 whenever a protocol message has been completely received
5412 (write_p == 0) or sent (write_p == 1). Here 'version' is the
5413 protocol version according to which the SSL library interprets
5414 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
5415 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
5416 the content type as defined in the SSL 3.0/TLS 1.0 protocol
5417 specification (change_cipher_spec(20), alert(21), handshake(22)).
5418 'buf' and 'len' point to the actual message, 'ssl' to the
5419 SSL object, and 'arg' is the application-defined value set by
5420 SSL[_CTX]_set_msg_callback_arg().
5422 'openssl s_client' and 'openssl s_server' have new '-msg' options
5423 to enable a callback that displays all protocol messages.
5426 *) Change the shared library support so shared libraries are built as
5427 soon as the corresponding static library is finished, and thereby get
5428 openssl and the test programs linked against the shared library.
5429 This still only happens when the keyword "shard" has been given to
5430 the configuration scripts.
5432 NOTE: shared library support is still an experimental thing, and
5433 backward binary compatibility is still not guaranteed.
5434 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
5436 *) Add support for Subject Information Access extension.
5437 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
5439 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
5440 additional bytes when new memory had to be allocated, not just
5441 when reusing an existing buffer.
5444 *) New command line and configuration option 'utf8' for the req command.
5445 This allows field values to be specified as UTF8 strings.
5448 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
5449 runs for the former and machine-readable output for the latter.
5452 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
5453 of the e-mail address in the DN (i.e., it will go into a certificate
5454 extension only). The new configuration file option 'email_in_dn = no'
5455 has the same effect.
5456 [Massimiliano Pala madwolf@openca.org]
5458 *) Change all functions with names starting with des_ to be starting
5459 with DES_ instead. Add wrappers that are compatible with libdes,
5460 but are named _ossl_old_des_*. Finally, add macros that map the
5461 des_* symbols to the corresponding _ossl_old_des_* if libdes
5462 compatibility is desired. If OpenSSL 0.9.6c compatibility is
5463 desired, the des_* symbols will be mapped to DES_*, with one
5466 Since we provide two compatibility mappings, the user needs to
5467 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
5468 compatibility is desired. The default (i.e., when that macro
5469 isn't defined) is OpenSSL 0.9.6c compatibility.
5471 There are also macros that enable and disable the support of old
5472 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
5473 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
5474 are defined, the default will apply: to support the old des routines.
5476 In either case, one must include openssl/des.h to get the correct
5477 definitions. Do not try to just include openssl/des_old.h, that
5480 NOTE: This is a major break of an old API into a new one. Software
5481 authors are encouraged to switch to the DES_ style functions. Some
5482 time in the future, des_old.h and the libdes compatibility functions
5483 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
5484 default), and then completely removed.
5487 *) Test for certificates which contain unsupported critical extensions.
5488 If such a certificate is found during a verify operation it is
5489 rejected by default: this behaviour can be overridden by either
5490 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
5491 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
5492 X509_supported_extension() has also been added which returns 1 if a
5493 particular extension is supported.
5496 *) Modify the behaviour of EVP cipher functions in similar way to digests
5497 to retain compatibility with existing code.
5500 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
5501 compatibility with existing code. In particular the 'ctx' parameter does
5502 not have to be to be initialized before the call to EVP_DigestInit() and
5503 it is tidied up after a call to EVP_DigestFinal(). New function
5504 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
5505 EVP_MD_CTX_copy() changed to not require the destination to be
5506 initialized valid and new function EVP_MD_CTX_copy_ex() added which
5507 requires the destination to be valid.
5509 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
5510 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
5513 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
5514 so that complete 'Handshake' protocol structures are kept in memory
5515 instead of overwriting 'msg_type' and 'length' with 'body' data.
5518 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
5519 [Massimo Santin via Richard Levitte]
5521 *) Major restructuring to the underlying ENGINE code. This includes
5522 reduction of linker bloat, separation of pure "ENGINE" manipulation
5523 (initialisation, etc) from functionality dealing with implementations
5524 of specific crypto iterfaces. This change also introduces integrated
5525 support for symmetric ciphers and digest implementations - so ENGINEs
5526 can now accelerate these by providing EVP_CIPHER and EVP_MD
5527 implementations of their own. This is detailed in crypto/engine/README
5528 as it couldn't be adequately described here. However, there are a few
5529 API changes worth noting - some RSA, DSA, DH, and RAND functions that
5530 were changed in the original introduction of ENGINE code have now
5531 reverted back - the hooking from this code to ENGINE is now a good
5532 deal more passive and at run-time, operations deal directly with
5533 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
5534 dereferencing through an ENGINE pointer any more. Also, the ENGINE
5535 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
5536 they were not being used by the framework as there is no concept of a
5537 BIGNUM_METHOD and they could not be generalised to the new
5538 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
5539 ENGINE_cpy() has been removed as it cannot be consistently defined in
5543 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
5546 *) Change mkdef.pl to sort symbols that get the same entry number,
5547 and make sure the automatically generated functions ERR_load_*
5548 become part of libeay.num as well.
5551 *) New function SSL_renegotiate_pending(). This returns true once
5552 renegotiation has been requested (either SSL_renegotiate() call
5553 or HelloRequest/ClientHello received from the peer) and becomes
5554 false once a handshake has been completed.
5555 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
5556 sends a HelloRequest, but does not ensure that a handshake takes
5557 place. SSL_renegotiate_pending() is useful for checking if the
5558 client has followed the request.)
5561 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
5562 By default, clients may request session resumption even during
5563 renegotiation (if session ID contexts permit); with this option,
5564 session resumption is possible only in the first handshake.
5566 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
5567 more bits available for options that should not be part of
5568 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
5571 *) Add some demos for certificate and certificate request creation.
5574 *) Make maximum certificate chain size accepted from the peer application
5575 settable (SSL*_get/set_max_cert_list()), as proposed by
5576 "Douglas E. Engert" <deengert@anl.gov>.
5579 *) Add support for shared libraries for Unixware-7
5580 (Boyd Lynn Gerber <gerberb@zenez.com>).
5583 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
5584 be done prior to destruction. Use this to unload error strings from
5585 ENGINEs that load their own error strings. NB: This adds two new API
5586 functions to "get" and "set" this destroy handler in an ENGINE.
5589 *) Alter all existing ENGINE implementations (except "openssl" and
5590 "openbsd") to dynamically instantiate their own error strings. This
5591 makes them more flexible to be built both as statically-linked ENGINEs
5592 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
5593 Also, add stub code to each that makes building them as self-contained
5594 shared-libraries easier (see README.ENGINE).
5597 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
5598 implementations into applications that are completely implemented in
5599 self-contained shared-libraries. The "dynamic" ENGINE exposes control
5600 commands that can be used to configure what shared-library to load and
5601 to control aspects of the way it is handled. Also, made an update to
5602 the README.ENGINE file that brings its information up-to-date and
5603 provides some information and instructions on the "dynamic" ENGINE
5604 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
5607 *) Make it possible to unload ranges of ERR strings with a new
5608 "ERR_unload_strings" function.
5611 *) Add a copy() function to EVP_MD.
5614 *) Make EVP_MD routines take a context pointer instead of just the
5615 md_data void pointer.
5618 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
5619 that the digest can only process a single chunk of data
5620 (typically because it is provided by a piece of
5621 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
5622 is only going to provide a single chunk of data, and hence the
5623 framework needn't accumulate the data for oneshot drivers.
5626 *) As with "ERR", make it possible to replace the underlying "ex_data"
5627 functions. This change also alters the storage and management of global
5628 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
5629 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
5630 index counters. The API functions that use this state have been changed
5631 to take a "class_index" rather than pointers to the class's local STACK
5632 and counter, and there is now an API function to dynamically create new
5633 classes. This centralisation allows us to (a) plug a lot of the
5634 thread-safety problems that existed, and (b) makes it possible to clean
5635 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
5636 such data would previously have always leaked in application code and
5637 workarounds were in place to make the memory debugging turn a blind eye
5638 to it. Application code that doesn't use this new function will still
5639 leak as before, but their memory debugging output will announce it now
5640 rather than letting it slide.
5642 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
5643 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
5644 has a return value to indicate success or failure.
5647 *) Make it possible to replace the underlying "ERR" functions such that the
5648 global state (2 LHASH tables and 2 locks) is only used by the "default"
5649 implementation. This change also adds two functions to "get" and "set"
5650 the implementation prior to it being automatically set the first time
5651 any other ERR function takes place. Ie. an application can call "get",
5652 pass the return value to a module it has just loaded, and that module
5653 can call its own "set" function using that value. This means the
5654 module's "ERR" operations will use (and modify) the error state in the
5655 application and not in its own statically linked copy of OpenSSL code.
5658 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
5659 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
5660 the operation, and provides a more encapsulated way for external code
5661 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
5662 to use these functions rather than manually incrementing the counts.
5664 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
5667 *) Add EVP test program.
5670 *) Add symmetric cipher support to ENGINE. Expect the API to change!
5673 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
5674 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
5675 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
5676 These allow a CRL to be built without having to access X509_CRL fields
5677 directly. Modify 'ca' application to use new functions.
5680 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
5681 bug workarounds. Rollback attack detection is a security feature.
5682 The problem will only arise on OpenSSL servers when TLSv1 is not
5683 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
5684 Software authors not wanting to support TLSv1 will have special reasons
5685 for their choice and can explicitly enable this option.
5686 [Bodo Moeller, Lutz Jaenicke]
5688 *) Rationalise EVP so it can be extended: don't include a union of
5689 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
5690 (similar to those existing for EVP_CIPHER_CTX).
5695 EVP_MD_CTX_init(&md); /* new function call */
5696 EVP_DigestInit(&md, EVP_sha1());
5697 EVP_DigestUpdate(&md, in, len);
5698 EVP_DigestFinal(&md, out, NULL);
5699 EVP_MD_CTX_cleanup(&md); /* new function call */
5703 *) Make DES key schedule conform to the usual scheme, as well as
5704 correcting its structure. This means that calls to DES functions
5705 now have to pass a pointer to a des_key_schedule instead of a
5706 plain des_key_schedule (which was actually always a pointer
5709 des_key_schedule ks;
5711 des_set_key_checked(..., &ks);
5712 des_ncbc_encrypt(..., &ks, ...);
5714 (Note that a later change renames 'des_...' into 'DES_...'.)
5717 *) Initial reduction of linker bloat: the use of some functions, such as
5718 PEM causes large amounts of unused functions to be linked in due to
5719 poor organisation. For example pem_all.c contains every PEM function
5720 which has a knock on effect of linking in large amounts of (unused)
5721 ASN1 code. Grouping together similar functions and splitting unrelated
5722 functions prevents this.
5725 *) Cleanup of EVP macros.
5728 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
5729 correct _ecb suffix.
5732 *) Add initial OCSP responder support to ocsp application. The
5733 revocation information is handled using the text based index
5734 use by the ca application. The responder can either handle
5735 requests generated internally, supplied in files (for example
5736 via a CGI script) or using an internal minimal server.
5739 *) Add configuration choices to get zlib compression for TLS.
5742 *) Changes to Kerberos SSL for RFC 2712 compliance:
5743 1. Implemented real KerberosWrapper, instead of just using
5744 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
5745 2. Implemented optional authenticator field of KerberosWrapper.
5747 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
5748 and authenticator structs; see crypto/krb5/.
5750 Generalized Kerberos calls to support multiple Kerberos libraries.
5751 [Vern Staats <staatsvr@asc.hpc.mil>,
5752 Jeffrey Altman <jaltman@columbia.edu>
5753 via Richard Levitte]
5755 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
5756 already does with RSA. testdsa.h now has 'priv_key/pub_key'
5757 values for each of the key sizes rather than having just
5758 parameters (and 'speed' generating keys each time).
5761 *) Speed up EVP routines.
5764 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
5765 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
5766 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
5767 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
5769 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
5770 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
5771 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
5774 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
5776 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
5779 *) Added the OS2-EMX target.
5780 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
5782 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
5783 to support NCONF routines in extension code. New function CONF_set_nconf()
5784 to allow functions which take an NCONF to also handle the old LHASH
5785 structure: this means that the old CONF compatible routines can be
5786 retained (in particular wrt extensions) without having to duplicate the
5787 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
5790 *) Enhance the general user interface with mechanisms for inner control
5791 and with possibilities to have yes/no kind of prompts.
5794 *) Change all calls to low level digest routines in the library and
5795 applications to use EVP. Add missing calls to HMAC_cleanup() and
5796 don't assume HMAC_CTX can be copied using memcpy().
5797 [Verdon Walker <VWalker@novell.com>, Steve Henson]
5799 *) Add the possibility to control engines through control names but with
5800 arbitrary arguments instead of just a string.
5801 Change the key loaders to take a UI_METHOD instead of a callback
5802 function pointer. NOTE: this breaks binary compatibility with earlier
5803 versions of OpenSSL [engine].
5804 Adapt the nCipher code for these new conditions and add a card insertion
5808 *) Enhance the general user interface with mechanisms to better support
5809 dialog box interfaces, application-defined prompts, the possibility
5810 to use defaults (for example default passwords from somewhere else)
5811 and interrupts/cancellations.
5814 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
5815 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
5818 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
5819 tidy up some unnecessarily weird code in 'sk_new()').
5820 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
5822 *) Change the key loading routines for ENGINEs to use the same kind
5823 callback (pem_password_cb) as all other routines that need this
5827 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
5828 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
5829 than this minimum value is recommended.
5832 *) New random seeder for OpenVMS, using the system process statistics
5833 that are easily reachable.
5836 *) Windows apparently can't transparently handle global
5837 variables defined in DLLs. Initialisations such as:
5839 const ASN1_ITEM *it = &ASN1_INTEGER_it;
5841 wont compile. This is used by the any applications that need to
5842 declare their own ASN1 modules. This was fixed by adding the option
5843 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
5844 needed for static libraries under Win32.
5847 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
5848 setting of purpose and trust fields. New X509_STORE trust and
5849 purpose functions and tidy up setting in other SSL functions.
5852 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
5853 structure. These are inherited by X509_STORE_CTX when it is
5854 initialised. This allows various defaults to be set in the
5855 X509_STORE structure (such as flags for CRL checking and custom
5856 purpose or trust settings) for functions which only use X509_STORE_CTX
5857 internally such as S/MIME.
5859 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
5860 trust settings if they are not set in X509_STORE. This allows X509_STORE
5861 purposes and trust (in S/MIME for example) to override any set by default.
5863 Add command line options for CRL checking to smime, s_client and s_server
5867 *) Initial CRL based revocation checking. If the CRL checking flag(s)
5868 are set then the CRL is looked up in the X509_STORE structure and
5869 its validity and signature checked, then if the certificate is found
5870 in the CRL the verify fails with a revoked error.
5872 Various new CRL related callbacks added to X509_STORE_CTX structure.
5874 Command line options added to 'verify' application to support this.
5876 This needs some additional work, such as being able to handle multiple
5877 CRLs with different times, extension based lookup (rather than just
5878 by subject name) and ultimately more complete V2 CRL extension
5882 *) Add a general user interface API (crypto/ui/). This is designed
5883 to replace things like des_read_password and friends (backward
5884 compatibility functions using this new API are provided).
5885 The purpose is to remove prompting functions from the DES code
5886 section as well as provide for prompting through dialog boxes in
5887 a window system and the like.
5890 *) Add "ex_data" support to ENGINE so implementations can add state at a
5891 per-structure level rather than having to store it globally.
5894 *) Make it possible for ENGINE structures to be copied when retrieved by
5895 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
5896 This causes the "original" ENGINE structure to act like a template,
5897 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
5898 operational state can be localised to each ENGINE structure, despite the
5899 fact they all share the same "methods". New ENGINE structures returned in
5900 this case have no functional references and the return value is the single
5901 structural reference. This matches the single structural reference returned
5902 by ENGINE_by_id() normally, when it is incremented on the pre-existing
5906 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
5907 needs to match any other type at all we need to manually clear the
5911 *) Changes to the "openssl engine" utility to include;
5912 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
5913 about an ENGINE's available control commands.
5914 - executing control commands from command line arguments using the
5915 '-pre' and '-post' switches. '-post' is only used if '-t' is
5916 specified and the ENGINE is successfully initialised. The syntax for
5917 the individual commands are colon-separated, for example;
5918 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
5921 *) New dynamic control command support for ENGINEs. ENGINEs can now
5922 declare their own commands (numbers), names (strings), descriptions,
5923 and input types for run-time discovery by calling applications. A
5924 subset of these commands are implicitly classed as "executable"
5925 depending on their input type, and only these can be invoked through
5926 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
5927 can be based on user input, config files, etc). The distinction is
5928 that "executable" commands cannot return anything other than a boolean
5929 result and can only support numeric or string input, whereas some
5930 discoverable commands may only be for direct use through
5931 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
5932 pointers, or other custom uses. The "executable" commands are to
5933 support parameterisations of ENGINE behaviour that can be
5934 unambiguously defined by ENGINEs and used consistently across any
5935 OpenSSL-based application. Commands have been added to all the
5936 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
5937 control over shared-library paths without source code alterations.
5940 *) Changed all ENGINE implementations to dynamically allocate their
5941 ENGINEs rather than declaring them statically. Apart from this being
5942 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
5943 this also allows the implementations to compile without using the
5944 internal engine_int.h header.
5947 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
5948 'const' value. Any code that should be able to modify a RAND_METHOD
5949 should already have non-const pointers to it (ie. they should only
5950 modify their own ones).
5953 *) Made a variety of little tweaks to the ENGINE code.
5954 - "atalla" and "ubsec" string definitions were moved from header files
5955 to C code. "nuron" string definitions were placed in variables
5956 rather than hard-coded - allowing parameterisation of these values
5957 later on via ctrl() commands.
5958 - Removed unused "#if 0"'d code.
5959 - Fixed engine list iteration code so it uses ENGINE_free() to release
5960 structural references.
5961 - Constified the RAND_METHOD element of ENGINE structures.
5962 - Constified various get/set functions as appropriate and added
5963 missing functions (including a catch-all ENGINE_cpy that duplicates
5964 all ENGINE values onto a new ENGINE except reference counts/state).
5965 - Removed NULL parameter checks in get/set functions. Setting a method
5966 or function to NULL is a way of cancelling out a previously set
5967 value. Passing a NULL ENGINE parameter is just plain stupid anyway
5968 and doesn't justify the extra error symbols and code.
5969 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
5970 flags from engine_int.h to engine.h.
5971 - Changed prototypes for ENGINE handler functions (init(), finish(),
5972 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
5975 *) Implement binary inversion algorithm for BN_mod_inverse in addition
5976 to the algorithm using long division. The binary algorithm can be
5977 used only if the modulus is odd. On 32-bit systems, it is faster
5978 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
5979 roughly 5-15% for 256-bit moduli), so we use it only for moduli
5980 up to 450 bits. In 64-bit environments, the binary algorithm
5981 appears to be advantageous for much longer moduli; here we use it
5982 for moduli up to 2048 bits.
5985 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
5986 could not support the combine flag in choice fields.
5989 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
5990 extensions from a certificate request to the certificate.
5993 *) Allow multiple 'certopt' and 'nameopt' options to be separated
5994 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
5995 file: this allows the display of the certificate about to be
5996 signed to be customised, to allow certain fields to be included
5997 or excluded and extension details. The old system didn't display
5998 multicharacter strings properly, omitted fields not in the policy
5999 and couldn't display additional details such as extensions.
6002 *) Function EC_POINTs_mul for multiple scalar multiplication
6003 of an arbitrary number of elliptic curve points
6004 \sum scalars[i]*points[i],
6005 optionally including the generator defined for the EC_GROUP:
6006 scalar*generator + \sum scalars[i]*points[i].
6008 EC_POINT_mul is a simple wrapper function for the typical case
6009 that the point list has just one item (besides the optional
6013 *) First EC_METHODs for curves over GF(p):
6015 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
6016 operations and provides various method functions that can also
6017 operate with faster implementations of modular arithmetic.
6019 EC_GFp_mont_method() reuses most functions that are part of
6020 EC_GFp_simple_method, but uses Montgomery arithmetic.
6022 [Bodo Moeller; point addition and point doubling
6023 implementation directly derived from source code provided by
6024 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
6026 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
6027 crypto/ec/ec_lib.c):
6029 Curves are EC_GROUP objects (with an optional group generator)
6030 based on EC_METHODs that are built into the library.
6032 Points are EC_POINT objects based on EC_GROUP objects.
6034 Most of the framework would be able to handle curves over arbitrary
6035 finite fields, but as there are no obvious types for fields other
6036 than GF(p), some functions are limited to that for now.
6039 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
6040 that the file contains a complete HTTP response.
6043 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
6044 change the def and num file printf format specifier from "%-40sXXX"
6045 to "%-39s XXX". The latter will always guarantee a space after the
6046 field while the former will cause them to run together if the field
6047 is 40 of more characters long.
6050 *) Constify the cipher and digest 'method' functions and structures
6051 and modify related functions to take constant EVP_MD and EVP_CIPHER
6055 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
6056 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
6059 *) Modify EVP_Digest*() routines so they now return values. Although the
6060 internal software routines can never fail additional hardware versions
6064 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
6066 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
6067 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
6070 ERR_R_NESTED_ASN1_ERROR
6072 ERR_R_MISSING_ASN1_EOS
6073 were 4 .. 9, conflicting with
6074 ERR_LIB_RSA (= ERR_R_RSA_LIB)
6076 ERR_LIB_PEM (= ERR_R_PEM_LIB).
6077 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
6079 Add new error code 'ERR_R_INTERNAL_ERROR'.
6082 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
6086 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
6087 sets the subject name for a new request or supersedes the
6088 subject name in a given request. Formats that can be parsed are
6089 'CN=Some Name, OU=myOU, C=IT'
6091 'CN=Some Name/OU=myOU/C=IT'.
6093 Add options '-batch' and '-verbose' to 'openssl req'.
6094 [Massimiliano Pala <madwolf@hackmasters.net>]
6096 *) Introduce the possibility to access global variables through
6097 functions on platform were that's the best way to handle exporting
6098 global variables in shared libraries. To enable this functionality,
6099 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
6100 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
6101 is normally done by Configure or something similar).
6103 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
6104 in the source file (foo.c) like this:
6106 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
6107 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
6109 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
6110 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
6112 OPENSSL_DECLARE_GLOBAL(int,foo);
6113 #define foo OPENSSL_GLOBAL_REF(foo)
6114 OPENSSL_DECLARE_GLOBAL(double,bar);
6115 #define bar OPENSSL_GLOBAL_REF(bar)
6117 The #defines are very important, and therefore so is including the
6118 header file everywhere where the defined globals are used.
6120 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
6121 of ASN.1 items, but that structure is a bit different.
6123 The largest change is in util/mkdef.pl which has been enhanced with
6124 better and easier to understand logic to choose which symbols should
6125 go into the Windows .def files as well as a number of fixes and code
6126 cleanup (among others, algorithm keywords are now sorted
6127 lexicographically to avoid constant rewrites).
6130 *) In BN_div() keep a copy of the sign of 'num' before writing the
6131 result to 'rm' because if rm==num the value will be overwritten
6132 and produce the wrong result if 'num' is negative: this caused
6133 problems with BN_mod() and BN_nnmod().
6136 *) Function OCSP_request_verify(). This checks the signature on an
6137 OCSP request and verifies the signer certificate. The signer
6138 certificate is just checked for a generic purpose and OCSP request
6142 *) Add OCSP_check_validity() function to check the validity of OCSP
6143 responses. OCSP responses are prepared in real time and may only
6144 be a few seconds old. Simply checking that the current time lies
6145 between thisUpdate and nextUpdate max reject otherwise valid responses
6146 caused by either OCSP responder or client clock inaccuracy. Instead
6147 we allow thisUpdate and nextUpdate to fall within a certain period of
6148 the current time. The age of the response can also optionally be
6149 checked. Two new options -validity_period and -status_age added to
6153 *) If signature or public key algorithm is unrecognized print out its
6154 OID rather that just UNKNOWN.
6157 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
6158 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
6159 ID to be generated from the issuer certificate alone which can then be
6160 passed to OCSP_id_issuer_cmp().
6163 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
6164 ASN1 modules to export functions returning ASN1_ITEM pointers
6165 instead of the ASN1_ITEM structures themselves. This adds several
6166 new macros which allow the underlying ASN1 function/structure to
6167 be accessed transparently. As a result code should not use ASN1_ITEM
6168 references directly (such as &X509_it) but instead use the relevant
6169 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
6170 use of the new ASN1 code on platforms where exporting structures
6171 is problematical (for example in shared libraries) but exporting
6172 functions returning pointers to structures is not.
6175 *) Add support for overriding the generation of SSL/TLS session IDs.
6176 These callbacks can be registered either in an SSL_CTX or per SSL.
6177 The purpose of this is to allow applications to control, if they wish,
6178 the arbitrary values chosen for use as session IDs, particularly as it
6179 can be useful for session caching in multiple-server environments. A
6180 command-line switch for testing this (and any client code that wishes
6181 to use such a feature) has been added to "s_server".
6182 [Geoff Thorpe, Lutz Jaenicke]
6184 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
6185 of the form '#if defined(...) || defined(...) || ...' and
6186 '#if !defined(...) && !defined(...) && ...'. This also avoids
6187 the growing number of special cases it was previously handling.
6190 *) Make all configuration macros available for application by making
6191 sure they are available in opensslconf.h, by giving them names starting
6192 with "OPENSSL_" to avoid conflicts with other packages and by making
6193 sure e_os2.h will cover all platform-specific cases together with
6195 Additionally, it is now possible to define configuration/platform-
6196 specific names (called "system identities"). In the C code, these
6197 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
6198 macro with the name beginning with "OPENSSL_SYS_", which is determined
6199 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
6203 *) New option -set_serial to 'req' and 'x509' this allows the serial
6204 number to use to be specified on the command line. Previously self
6205 signed certificates were hard coded with serial number 0 and the
6206 CA options of 'x509' had to use a serial number in a file which was
6210 *) New options to 'ca' utility to support V2 CRL entry extensions.
6211 Currently CRL reason, invalidity date and hold instruction are
6212 supported. Add new CRL extensions to V3 code and some new objects.
6215 *) New function EVP_CIPHER_CTX_set_padding() this is used to
6216 disable standard block padding (aka PKCS#5 padding) in the EVP
6217 API, which was previously mandatory. This means that the data is
6218 not padded in any way and so the total length much be a multiple
6219 of the block size, otherwise an error occurs.
6222 *) Initial (incomplete) OCSP SSL support.
6225 *) New function OCSP_parse_url(). This splits up a URL into its host,
6226 port and path components: primarily to parse OCSP URLs. New -url
6227 option to ocsp utility.
6230 *) New nonce behavior. The return value of OCSP_check_nonce() now
6231 reflects the various checks performed. Applications can decide
6232 whether to tolerate certain situations such as an absent nonce
6233 in a response when one was present in a request: the ocsp application
6234 just prints out a warning. New function OCSP_add1_basic_nonce()
6235 this is to allow responders to include a nonce in a response even if
6236 the request is nonce-less.
6239 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
6240 skipped when using openssl x509 multiple times on a single input file,
6241 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
6244 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
6245 set string type: to handle setting ASN1_TIME structures. Fix ca
6246 utility to correctly initialize revocation date of CRLs.
6249 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
6250 the clients preferred ciphersuites and rather use its own preferences.
6251 Should help to work around M$ SGC (Server Gated Cryptography) bug in
6252 Internet Explorer by ensuring unchanged hash method during stepup.
6253 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
6256 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
6257 to aes and add a new 'exist' option to print out symbols that don't
6261 *) Additional options to ocsp utility to allow flags to be set and
6262 additional certificates supplied.
6265 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
6266 OCSP client a number of certificate to only verify the response
6270 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
6271 handle the new API. Currently only ECB, CBC modes supported. Add new
6274 Add TLS AES ciphersuites as described in RFC3268, "Advanced
6275 Encryption Standard (AES) Ciphersuites for Transport Layer
6276 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
6277 not enabled by default and were not part of the "ALL" ciphersuite
6278 alias because they were not yet official; they could be
6279 explicitly requested by specifying the "AESdraft" ciphersuite
6280 group alias. In the final release of OpenSSL 0.9.7, the group
6281 alias is called "AES" and is part of "ALL".)
6282 [Ben Laurie, Steve Henson, Bodo Moeller]
6284 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
6285 request to response.
6288 *) Functions for OCSP responders. OCSP_request_onereq_count(),
6289 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
6290 extract information from a certificate request. OCSP_response_create()
6291 creates a response and optionally adds a basic response structure.
6292 OCSP_basic_add1_status() adds a complete single response to a basic
6293 response and returns the OCSP_SINGLERESP structure just added (to allow
6294 extensions to be included for example). OCSP_basic_add1_cert() adds a
6295 certificate to a basic response and OCSP_basic_sign() signs a basic
6296 response with various flags. New helper functions ASN1_TIME_check()
6297 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
6298 (converts ASN1_TIME to GeneralizedTime).
6301 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
6302 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
6303 structure from a certificate. X509_pubkey_digest() digests the public_key
6304 contents: this is used in various key identifiers.
6307 *) Make sk_sort() tolerate a NULL argument.
6308 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
6310 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
6311 passed by the function are trusted implicitly. If any of them signed the
6312 response then it is assumed to be valid and is not verified.
6315 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
6316 to data. This was previously part of the PKCS7 ASN1 code. This
6317 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
6318 [Steve Henson, reported by Kenneth R. Robinette
6319 <support@securenetterm.com>]
6321 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
6322 routines: without these tracing memory leaks is very painful.
6323 Fix leaks in PKCS12 and PKCS7 routines.
6326 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
6327 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
6328 effectively meant GeneralizedTime would never be used. Now it
6329 is initialised to -1 but X509_time_adj() now has to check the value
6330 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
6331 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
6332 [Steve Henson, reported by Kenneth R. Robinette
6333 <support@securenetterm.com>]
6335 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
6336 result in a zero length in the ASN1_INTEGER structure which was
6337 not consistent with the structure when d2i_ASN1_INTEGER() was used
6338 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
6339 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
6340 where it did not print out a minus for negative ASN1_INTEGER.
6343 *) Add summary printout to ocsp utility. The various functions which
6344 convert status values to strings have been renamed to:
6345 OCSP_response_status_str(), OCSP_cert_status_str() and
6346 OCSP_crl_reason_str() and are no longer static. New options
6347 to verify nonce values and to disable verification. OCSP response
6348 printout format cleaned up.
6351 *) Add additional OCSP certificate checks. These are those specified
6352 in RFC2560. This consists of two separate checks: the CA of the
6353 certificate being checked must either be the OCSP signer certificate
6354 or the issuer of the OCSP signer certificate. In the latter case the
6355 OCSP signer certificate must contain the OCSP signing extended key
6356 usage. This check is performed by attempting to match the OCSP
6357 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
6358 in the OCSP_CERTID structures of the response.
6361 *) Initial OCSP certificate verification added to OCSP_basic_verify()
6362 and related routines. This uses the standard OpenSSL certificate
6363 verify routines to perform initial checks (just CA validity) and
6364 to obtain the certificate chain. Then additional checks will be
6365 performed on the chain. Currently the root CA is checked to see
6366 if it is explicitly trusted for OCSP signing. This is used to set
6367 a root CA as a global signing root: that is any certificate that
6368 chains to that CA is an acceptable OCSP signing certificate.
6371 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
6372 extensions from a separate configuration file.
6373 As when reading extensions from the main configuration file,
6374 the '-extensions ...' option may be used for specifying the
6376 [Massimiliano Pala <madwolf@comune.modena.it>]
6378 *) New OCSP utility. Allows OCSP requests to be generated or
6379 read. The request can be sent to a responder and the output
6380 parsed, outputed or printed in text form. Not complete yet:
6381 still needs to check the OCSP response validity.
6384 *) New subcommands for 'openssl ca':
6385 'openssl ca -status <serial>' prints the status of the cert with
6386 the given serial number (according to the index file).
6387 'openssl ca -updatedb' updates the expiry status of certificates
6389 [Massimiliano Pala <madwolf@comune.modena.it>]
6391 *) New '-newreq-nodes' command option to CA.pl. This is like
6392 '-newreq', but calls 'openssl req' with the '-nodes' option
6393 so that the resulting key is not encrypted.
6394 [Damien Miller <djm@mindrot.org>]
6396 *) New configuration for the GNU Hurd.
6397 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
6399 *) Initial code to implement OCSP basic response verify. This
6400 is currently incomplete. Currently just finds the signer's
6401 certificate and verifies the signature on the response.
6404 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
6405 value of OPENSSLDIR. This is available via the new '-d' option
6406 to 'openssl version', and is also included in 'openssl version -a'.
6409 *) Allowing defining memory allocation callbacks that will be given
6410 file name and line number information in additional arguments
6411 (a const char* and an int). The basic functionality remains, as
6412 well as the original possibility to just replace malloc(),
6413 realloc() and free() by functions that do not know about these
6414 additional arguments. To register and find out the current
6415 settings for extended allocation functions, the following
6416 functions are provided:
6418 CRYPTO_set_mem_ex_functions
6419 CRYPTO_set_locked_mem_ex_functions
6420 CRYPTO_get_mem_ex_functions
6421 CRYPTO_get_locked_mem_ex_functions
6423 These work the same way as CRYPTO_set_mem_functions and friends.
6424 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
6425 extended allocation function is enabled.
6426 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
6427 a conventional allocation function is enabled.
6428 [Richard Levitte, Bodo Moeller]
6430 *) Finish off removing the remaining LHASH function pointer casts.
6431 There should no longer be any prototype-casting required when using
6432 the LHASH abstraction, and any casts that remain are "bugs". See
6433 the callback types and macros at the head of lhash.h for details
6434 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
6437 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
6438 If /dev/[u]random devices are not available or do not return enough
6439 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
6441 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
6442 /etc/entropy will be queried once each in this sequence, quering stops
6443 when enough entropy was collected without querying more sockets.
6446 *) Change the Unix RAND_poll() variant to be able to poll several
6447 random devices, as specified by DEVRANDOM, until a sufficient amount
6448 of data has been collected. We spend at most 10 ms on each file
6449 (select timeout) and read in non-blocking mode. DEVRANDOM now
6450 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
6451 (previously it was just the string "/dev/urandom"), so on typical
6452 platforms the 10 ms delay will never occur.
6453 Also separate out the Unix variant to its own file, rand_unix.c.
6454 For VMS, there's a currently-empty rand_vms.c.
6457 *) Move OCSP client related routines to ocsp_cl.c. These
6458 provide utility functions which an application needing
6459 to issue a request to an OCSP responder and analyse the
6460 response will typically need: as opposed to those which an
6461 OCSP responder itself would need which will be added later.
6463 OCSP_request_sign() signs an OCSP request with an API similar
6464 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
6465 response. OCSP_response_get1_basic() extracts basic response
6466 from response. OCSP_resp_find_status(): finds and extracts status
6467 information from an OCSP_CERTID structure (which will be created
6468 when the request structure is built). These are built from lower
6469 level functions which work on OCSP_SINGLERESP structures but
6470 wont normally be used unless the application wishes to examine
6471 extensions in the OCSP response for example.
6473 Replace nonce routines with a pair of functions.
6474 OCSP_request_add1_nonce() adds a nonce value and optionally
6475 generates a random value. OCSP_check_nonce() checks the
6476 validity of the nonce in an OCSP response.
6479 *) Change function OCSP_request_add() to OCSP_request_add0_id().
6480 This doesn't copy the supplied OCSP_CERTID and avoids the
6481 need to free up the newly created id. Change return type
6482 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
6483 This can then be used to add extensions to the request.
6484 Deleted OCSP_request_new(), since most of its functionality
6485 is now in OCSP_REQUEST_new() (and the case insensitive name
6486 clash) apart from the ability to set the request name which
6487 will be added elsewhere.
6490 *) Update OCSP API. Remove obsolete extensions argument from
6491 various functions. Extensions are now handled using the new
6492 OCSP extension code. New simple OCSP HTTP function which
6493 can be used to send requests and parse the response.
6496 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
6497 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
6498 uses the special reorder version of SET OF to sort the attributes
6499 and reorder them to match the encoded order. This resolves a long
6500 standing problem: a verify on a PKCS7 structure just after signing
6501 it used to fail because the attribute order did not match the
6502 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
6503 it uses the received order. This is necessary to tolerate some broken
6504 software that does not order SET OF. This is handled by encoding
6505 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
6506 to produce the required SET OF.
6509 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
6510 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
6511 files to get correct declarations of the ASN.1 item variables.
6514 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
6515 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
6516 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
6517 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
6518 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
6519 ASN1_ITEM and no wrapper functions.
6522 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
6523 replace the old function pointer based I/O routines. Change most of
6524 the *_d2i_bio() and *_d2i_fp() functions to use these.
6527 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
6528 lines, recognice more "algorithms" that can be deselected, and make
6529 it complain about algorithm deselection that isn't recognised.
6532 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
6533 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
6534 to use new functions. Add NO_ASN1_OLD which can be set to remove
6535 some old style ASN1 functions: this can be used to determine if old
6536 code will still work when these eventually go away.
6539 *) New extension functions for OCSP structures, these follow the
6540 same conventions as certificates and CRLs.
6543 *) New function X509V3_add1_i2d(). This automatically encodes and
6544 adds an extension. Its behaviour can be customised with various
6545 flags to append, replace or delete. Various wrappers added for
6546 certifcates and CRLs.
6549 *) Fix to avoid calling the underlying ASN1 print routine when
6550 an extension cannot be parsed. Correct a typo in the
6551 OCSP_SERVICELOC extension. Tidy up print OCSP format.
6554 *) Make mkdef.pl parse some of the ASN1 macros and add appropriate
6555 entries for variables.
6558 *) Add functionality to apps/openssl.c for detecting locking
6559 problems: As the program is single-threaded, all we have
6560 to do is register a locking callback using an array for
6561 storing which locks are currently held by the program.
6564 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
6565 SSL_get_ex_data_X509_STORE_idx(), which is used in
6566 ssl_verify_cert_chain() and thus can be called at any time
6567 during TLS/SSL handshakes so that thread-safety is essential.
6568 Unfortunately, the ex_data design is not at all suited
6569 for multi-threaded use, so it probably should be abolished.
6572 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
6573 [Broadcom, tweaked and integrated by Geoff Thorpe]
6575 *) Move common extension printing code to new function
6576 X509V3_print_extensions(). Reorganise OCSP print routines and
6577 implement some needed OCSP ASN1 functions. Add OCSP extensions.
6580 *) New function X509_signature_print() to remove duplication in some
6584 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
6585 set (this was treated exactly the same as SET OF previously). This
6586 is used to reorder the STACK representing the structure to match the
6587 encoding. This will be used to get round a problem where a PKCS7
6588 structure which was signed could not be verified because the STACK
6589 order did not reflect the encoded order.
6592 *) Reimplement the OCSP ASN1 module using the new code.
6595 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
6596 for its ASN1 operations. The old style function pointers still exist
6597 for now but they will eventually go away.
6600 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
6601 completely replaces the old ASN1 functionality with a table driven
6602 encoder and decoder which interprets an ASN1_ITEM structure describing
6603 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
6604 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
6605 has also been converted to the new form.
6608 *) Change BN_mod_exp_recp so that negative moduli are tolerated
6609 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
6610 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
6611 for negative moduli.
6614 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
6615 of not touching the result's sign bit.
6618 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
6622 *) Changed the LHASH code to use prototypes for callbacks, and created
6623 macros to declare and implement thin (optionally static) functions
6624 that provide type-safety and avoid function pointer casting for the
6625 type-specific callbacks.
6628 *) Added Kerberos Cipher Suites to be used with TLS, as written in
6630 [Veers Staats <staatsvr@asc.hpc.mil>,
6631 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
6633 *) Reformat the FAQ so the different questions and answers can be divided
6634 in sections depending on the subject.
6637 *) Have the zlib compression code load ZLIB.DLL dynamically under
6641 *) New function BN_mod_sqrt for computing square roots modulo a prime
6642 (using the probabilistic Tonelli-Shanks algorithm unless
6643 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
6644 be handled deterministically).
6645 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
6647 *) Make BN_mod_inverse faster by explicitly handling small quotients
6648 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
6649 512 bits], about 30% for larger ones [1024 or 2048 bits].)
6652 *) New function BN_kronecker.
6655 *) Fix BN_gcd so that it works on negative inputs; the result is
6656 positive unless both parameters are zero.
6657 Previously something reasonably close to an infinite loop was
6658 possible because numbers could be growing instead of shrinking
6659 in the implementation of Euclid's algorithm.
6662 *) Fix BN_is_word() and BN_is_one() macros to take into account the
6663 sign of the number in question.
6665 Fix BN_is_word(a,w) to work correctly for w == 0.
6667 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
6668 because its test if the absolute value of 'a' equals 'w'.
6669 Note that BN_abs_is_word does *not* handle w == 0 reliably;
6670 it exists mostly for use in the implementations of BN_is_zero(),
6671 BN_is_one(), and BN_is_word().
6674 *) New function BN_swap.
6677 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
6678 the exponentiation functions are more likely to produce reasonable
6679 results on negative inputs.
6682 *) Change BN_mod_mul so that the result is always non-negative.
6683 Previously, it could be negative if one of the factors was negative;
6684 I don't think anyone really wanted that behaviour.
6687 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
6688 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
6689 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
6690 and add new functions:
6699 BN_mod_lshift1_quick
6703 These functions always generate non-negative results.
6705 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
6706 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
6708 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
6709 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
6710 be reduced modulo m.
6711 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
6714 The following entry accidentally appeared in the CHANGES file
6715 distributed with OpenSSL 0.9.7. The modifications described in
6716 it do *not* apply to OpenSSL 0.9.7.
6718 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
6719 was actually never needed) and in BN_mul(). The removal in BN_mul()
6720 required a small change in bn_mul_part_recursive() and the addition
6721 of the functions bn_cmp_part_words(), bn_sub_part_words() and
6722 bn_add_part_words(), which do the same thing as bn_cmp_words(),
6723 bn_sub_words() and bn_add_words() except they take arrays with
6728 *) In 'openssl passwd', verify passwords read from the terminal
6729 unless the '-salt' option is used (which usually means that
6730 verification would just waste user's time since the resulting
6731 hash is going to be compared with some given password hash)
6732 or the new '-noverify' option is used.
6734 This is an incompatible change, but it does not affect
6735 non-interactive use of 'openssl passwd' (passwords on the command
6736 line, '-stdin' option, '-in ...' option) and thus should not
6740 *) Remove all references to RSAref, since there's no more need for it.
6743 *) Make DSO load along a path given through an environment variable
6744 (SHLIB_PATH) with shl_load().
6747 *) Constify the ENGINE code as a result of BIGNUM constification.
6748 Also constify the RSA code and most things related to it. In a
6749 few places, most notable in the depth of the ASN.1 code, ugly
6750 casts back to non-const were required (to be solved at a later
6754 *) Make it so the openssl application has all engines loaded by default.
6757 *) Constify the BIGNUM routines a little more.
6760 *) Add the following functions:
6762 ENGINE_load_cswift()
6764 ENGINE_load_atalla()
6766 ENGINE_load_builtin_engines()
6768 That way, an application can itself choose if external engines that
6769 are built-in in OpenSSL shall ever be used or not. The benefit is
6770 that applications won't have to be linked with libdl or other dso
6771 libraries unless it's really needed.
6773 Changed 'openssl engine' to load all engines on demand.
6774 Changed the engine header files to avoid the duplication of some
6775 declarations (they differed!).
6778 *) 'openssl engine' can now list capabilities.
6781 *) Better error reporting in 'openssl engine'.
6784 *) Never call load_dh_param(NULL) in s_server.
6787 *) Add engine application. It can currently list engines by name and
6788 identity, and test if they are actually available.
6791 *) Improve RPM specification file by forcing symbolic linking and making
6792 sure the installed documentation is also owned by root.root.
6793 [Damien Miller <djm@mindrot.org>]
6795 *) Give the OpenSSL applications more possibilities to make use of
6796 keys (public as well as private) handled by engines.
6799 *) Add OCSP code that comes from CertCo.
6802 *) Add VMS support for the Rijndael code.
6805 *) Added untested support for Nuron crypto accelerator.
6808 *) Add support for external cryptographic devices. This code was
6809 previously distributed separately as the "engine" branch.
6810 [Geoff Thorpe, Richard Levitte]
6812 *) Rework the filename-translation in the DSO code. It is now possible to
6813 have far greater control over how a "name" is turned into a filename
6814 depending on the operating environment and any oddities about the
6815 different shared library filenames on each system.
6818 *) Support threads on FreeBSD-elf in Configure.
6821 *) Fix for SHA1 assembly problem with MASM: it produces
6822 warnings about corrupt line number information when assembling
6823 with debugging information. This is caused by the overlapping
6825 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
6828 NCONF_get_number() has no error checking at all. As a replacement,
6829 NCONF_get_number_e() is defined (_e for "error checking") and is
6830 promoted strongly. The old NCONF_get_number is kept around for
6831 binary backward compatibility.
6832 Make it possible for methods to load from something other than a BIO,
6833 by providing a function pointer that is given a name instead of a BIO.
6834 For example, this could be used to load configuration data from an
6838 *) Fix for non blocking accept BIOs. Added new I/O special reason
6839 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
6840 with non blocking I/O was not possible because no retry code was
6841 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
6845 *) Added the beginnings of Rijndael support.
6848 *) Fix for bug in DirectoryString mask setting. Add support for
6849 X509_NAME_print_ex() in 'req' and X509_print_ex() function
6850 to allow certificate printing to more controllable, additional
6851 'certopt' option to 'x509' to allow new printing options to be
6855 *) Clean old EAY MD5 hack from e_os.h.
6858 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
6860 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
6861 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
6862 [Joe Orton, Steve Henson]
6864 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
6866 *) Fix additional bug revealed by the NISCC test suite:
6868 Stop bug triggering large recursion when presented with
6869 certain ASN.1 tags (CVE-2003-0851)
6872 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
6874 *) Fix various bugs revealed by running the NISCC test suite:
6876 Stop out of bounds reads in the ASN1 code when presented with
6877 invalid tags (CVE-2003-0543 and CVE-2003-0544).
6879 If verify callback ignores invalid public key errors don't try to check
6880 certificate signature with the NULL public key.
6884 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
6885 if the server requested one: as stated in TLS 1.0 and SSL 3.0
6889 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
6890 extra data after the compression methods not only for TLS 1.0
6891 but also for SSL 3.0 (as required by the specification).
6892 [Bodo Moeller; problem pointed out by Matthias Loepfe]
6894 *) Change X509_certificate_type() to mark the key as exported/exportable
6895 when it's 512 *bits* long, not 512 bytes.
6898 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
6900 *) Countermeasure against the Klima-Pokorny-Rosa extension of
6901 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
6902 a protocol version number mismatch like a decryption error
6903 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
6906 *) Turn on RSA blinding by default in the default implementation
6907 to avoid a timing attack. Applications that don't want it can call
6908 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
6909 They would be ill-advised to do so in most cases.
6910 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
6912 *) Change RSA blinding code so that it works when the PRNG is not
6913 seeded (in this case, the secret RSA exponent is abused as
6914 an unpredictable seed -- if it is not unpredictable, there
6915 is no point in blinding anyway). Make RSA blinding thread-safe
6916 by remembering the creator's thread ID in rsa->blinding and
6917 having all other threads use local one-time blinding factors
6918 (this requires more computation than sharing rsa->blinding, but
6919 avoids excessive locking; and if an RSA object is not shared
6920 between threads, blinding will still be very fast).
6923 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
6925 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
6926 via timing by performing a MAC computation even if incorrrect
6927 block cipher padding has been found. This is a countermeasure
6928 against active attacks where the attacker has to distinguish
6929 between bad padding and a MAC verification error. (CVE-2003-0078)
6931 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
6932 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
6933 Martin Vuagnoux (EPFL, Ilion)]
6935 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
6937 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
6938 memory from it's contents. This is done with a counter that will
6939 place alternating values in each byte. This can be used to solve
6940 two issues: 1) the removal of calls to memset() by highly optimizing
6941 compilers, and 2) cleansing with other values than 0, since those can
6942 be read through on certain media, for example a swap space on disk.
6945 *) Bugfix: client side session caching did not work with external caching,
6946 because the session->cipher setting was not restored when reloading
6947 from the external cache. This problem was masked, when
6948 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
6949 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
6952 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
6953 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
6954 [Zeev Lieber <zeev-l@yahoo.com>]
6956 *) Undo an undocumented change introduced in 0.9.6e which caused
6957 repeated calls to OpenSSL_add_all_ciphers() and
6958 OpenSSL_add_all_digests() to be ignored, even after calling
6962 *) Change the default configuration reader to deal with last line not
6963 being properly terminated.
6966 *) Change X509_NAME_cmp() so it applies the special rules on handling
6967 DN values that are of type PrintableString, as well as RDNs of type
6968 emailAddress where the value has the type ia5String.
6969 [stefank@valicert.com via Richard Levitte]
6971 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
6972 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
6973 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
6974 the bitwise-OR of the two for use by the majority of applications
6975 wanting this behaviour, and update the docs. The documented
6976 behaviour and actual behaviour were inconsistent and had been
6977 changing anyway, so this is more a bug-fix than a behavioural
6979 [Geoff Thorpe, diagnosed by Nadav Har'El]
6981 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
6982 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
6985 *) Fix initialization code race conditions in
6986 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
6987 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
6988 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
6989 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
6990 ssl2_get_cipher_by_char(),
6991 ssl3_get_cipher_by_char().
6992 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
6994 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
6995 the cached sessions are flushed, as the remove_cb() might use ex_data
6996 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
6997 (see [openssl.org #212]).
6998 [Geoff Thorpe, Lutz Jaenicke]
7000 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
7001 length, instead of the encoding length to d2i_ASN1_OBJECT.
7004 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
7006 *) [In 0.9.6g-engine release:]
7007 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
7008 [Lynn Gazis <lgazis@rainbow.com>]
7010 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
7012 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
7013 and get fix the header length calculation.
7014 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
7015 Alon Kantor <alonk@checkpoint.com> (and others),
7018 *) Use proper error handling instead of 'assertions' in buffer
7019 overflow checks added in 0.9.6e. This prevents DoS (the
7020 assertions could call abort()).
7021 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
7023 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
7025 *) Add various sanity checks to asn1_get_length() to reject
7026 the ASN1 length bytes if they exceed sizeof(long), will appear
7027 negative or the content length exceeds the length of the
7029 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
7031 *) Fix cipher selection routines: ciphers without encryption had no flags
7032 for the cipher strength set and where therefore not handled correctly
7033 by the selection routines (PR #130).
7036 *) Fix EVP_dsa_sha macro.
7040 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
7041 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
7042 that was added in OpenSSL 0.9.6d.
7044 As the countermeasure turned out to be incompatible with some
7045 broken SSL implementations, the new option is part of SSL_OP_ALL.
7046 SSL_OP_ALL is usually employed when compatibility with weird SSL
7047 implementations is desired (e.g. '-bugs' option to 's_client' and
7048 's_server'), so the new option is automatically set in many
7052 *) Changes in security patch:
7054 Changes marked "(CHATS)" were sponsored by the Defense Advanced
7055 Research Projects Agency (DARPA) and Air Force Research Laboratory,
7056 Air Force Materiel Command, USAF, under agreement number
7059 *) Add various sanity checks to asn1_get_length() to reject
7060 the ASN1 length bytes if they exceed sizeof(long), will appear
7061 negative or the content length exceeds the length of the
7062 supplied buffer. (CVE-2002-0659)
7063 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
7065 *) Assertions for various potential buffer overflows, not known to
7067 [Ben Laurie (CHATS)]
7069 *) Various temporary buffers to hold ASCII versions of integers were
7070 too small for 64 bit platforms. (CVE-2002-0655)
7071 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
7073 *) Remote buffer overflow in SSL3 protocol - an attacker could
7074 supply an oversized session ID to a client. (CVE-2002-0656)
7075 [Ben Laurie (CHATS)]
7077 *) Remote buffer overflow in SSL2 protocol - an attacker could
7078 supply an oversized client master key. (CVE-2002-0656)
7079 [Ben Laurie (CHATS)]
7081 Changes between 0.9.6c and 0.9.6d [9 May 2002]
7083 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
7084 encoded as NULL) with id-dsa-with-sha1.
7085 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
7087 *) Check various X509_...() return values in apps/req.c.
7088 [Nils Larsch <nla@trustcenter.de>]
7090 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
7091 an end-of-file condition would erronously be flagged, when the CRLF
7092 was just at the end of a processed block. The bug was discovered when
7093 processing data through a buffering memory BIO handing the data to a
7094 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
7095 <ptsekov@syntrex.com> and Nedelcho Stanev.
7098 *) Implement a countermeasure against a vulnerability recently found
7099 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
7100 before application data chunks to avoid the use of known IVs
7101 with data potentially chosen by the attacker.
7104 *) Fix length checks in ssl3_get_client_hello().
7107 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
7108 to prevent ssl3_read_internal() from incorrectly assuming that
7109 ssl3_read_bytes() found application data while handshake
7110 processing was enabled when in fact s->s3->in_read_app_data was
7111 merely automatically cleared during the initial handshake.
7112 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
7114 *) Fix object definitions for Private and Enterprise: they were not
7115 recognized in their shortname (=lowercase) representation. Extend
7116 obj_dat.pl to issue an error when using undefined keywords instead
7117 of silently ignoring the problem (Svenning Sorensen
7118 <sss@sss.dnsalias.net>).
7121 *) Fix DH_generate_parameters() so that it works for 'non-standard'
7122 generators, i.e. generators other than 2 and 5. (Previously, the
7123 code did not properly initialise the 'add' and 'rem' values to
7124 BN_generate_prime().)
7126 In the new general case, we do not insist that 'generator' is
7127 actually a primitive root: This requirement is rather pointless;
7128 a generator of the order-q subgroup is just as good, if not
7132 *) Map new X509 verification errors to alerts. Discovered and submitted by
7133 Tom Wu <tom@arcot.com>.
7136 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
7137 returning non-zero before the data has been completely received
7138 when using non-blocking I/O.
7139 [Bodo Moeller; problem pointed out by John Hughes]
7141 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
7142 [Ben Laurie, Lutz Jaenicke]
7144 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
7145 Yoram Zahavi <YoramZ@gilian.com>).
7148 *) Add information about CygWin 1.3 and on, and preserve proper
7149 configuration for the versions before that.
7150 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
7152 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
7153 check whether we deal with a copy of a session and do not delete from
7154 the cache in this case. Problem reported by "Izhar Shoshani Levi"
7155 <izhar@checkpoint.com>.
7158 *) Do not store session data into the internal session cache, if it
7159 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
7160 flag is set). Proposed by Aslam <aslam@funk.com>.
7163 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
7167 *) [In 0.9.6d-engine release:]
7168 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
7169 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
7171 *) Add the configuration target linux-s390x.
7172 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
7174 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
7175 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
7176 variable as an indication that a ClientHello message has been
7177 received. As the flag value will be lost between multiple
7178 invocations of ssl3_accept when using non-blocking I/O, the
7179 function may not be aware that a handshake has actually taken
7180 place, thus preventing a new session from being added to the
7183 To avoid this problem, we now set s->new_session to 2 instead of
7184 using a local variable.
7185 [Lutz Jaenicke, Bodo Moeller]
7187 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
7188 if the SSL_R_LENGTH_MISMATCH error is detected.
7189 [Geoff Thorpe, Bodo Moeller]
7191 *) New 'shared_ldflag' column in Configure platform table.
7194 *) Fix EVP_CIPHER_mode macro.
7195 ["Dan S. Camper" <dan@bti.net>]
7197 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
7198 type, we must throw them away by setting rr->length to 0.
7199 [D P Chang <dpc@qualys.com>]
7201 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
7203 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
7204 <Dominikus.Scherkl@biodata.com>. (The previous implementation
7205 worked incorrectly for those cases where range = 10..._2 and
7206 3*range is two bits longer than range.)
7209 *) Only add signing time to PKCS7 structures if it is not already
7213 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
7214 OBJ_ld_ce should be OBJ_id_ce.
7215 Also some ip-pda OIDs in crypto/objects/objects.txt were
7216 incorrect (cf. RFC 3039).
7217 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
7219 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
7220 returns early because it has nothing to do.
7221 [Andy Schneider <andy.schneider@bjss.co.uk>]
7223 *) [In 0.9.6c-engine release:]
7224 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
7225 [Andy Schneider <andy.schneider@bjss.co.uk>]
7227 *) [In 0.9.6c-engine release:]
7228 Add support for Cryptographic Appliance's keyserver technology.
7229 (Use engine 'keyclient')
7230 [Cryptographic Appliances and Geoff Thorpe]
7232 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
7233 is called via tools/c89.sh because arguments have to be
7234 rearranged (all '-L' options must appear before the first object
7236 [Richard Shapiro <rshapiro@abinitio.com>]
7238 *) [In 0.9.6c-engine release:]
7239 Add support for Broadcom crypto accelerator cards, backported
7241 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
7243 *) [In 0.9.6c-engine release:]
7244 Add support for SureWare crypto accelerator cards from
7245 Baltimore Technologies. (Use engine 'sureware')
7246 [Baltimore Technologies and Mark Cox]
7248 *) [In 0.9.6c-engine release:]
7249 Add support for crypto accelerator cards from Accelerated
7250 Encryption Processing, www.aep.ie. (Use engine 'aep')
7251 [AEP Inc. and Mark Cox]
7253 *) Add a configuration entry for gcc on UnixWare.
7254 [Gary Benson <gbenson@redhat.com>]
7256 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
7257 messages are stored in a single piece (fixed-length part and
7258 variable-length part combined) and fix various bugs found on the way.
7261 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
7262 instead. BIO_gethostbyname() does not know what timeouts are
7263 appropriate, so entries would stay in cache even when they have
7265 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
7267 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
7268 faced with a pathologically small ClientHello fragment that does
7269 not contain client_version: Instead of aborting with an error,
7270 simply choose the highest available protocol version (i.e.,
7271 TLS 1.0 unless it is disabled). In practice, ClientHello
7272 messages are never sent like this, but this change gives us
7273 strictly correct behaviour at least for TLS.
7276 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
7277 never resets s->method to s->ctx->method when called from within
7278 one of the SSL handshake functions.
7279 [Bodo Moeller; problem pointed out by Niko Baric]
7281 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
7282 (sent using the client's version number) if client_version is
7283 smaller than the protocol version in use. Also change
7284 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
7285 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
7286 the client will at least see that alert.
7289 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
7293 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
7294 client receives HelloRequest while in a handshake.
7295 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
7297 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
7298 should end in 'break', not 'goto end' which circumvents various
7299 cleanups done in state SSL_ST_OK. But session related stuff
7300 must be disabled for SSL_ST_OK in the case that we just sent a
7303 Also avoid some overhead by not calling ssl_init_wbio_buffer()
7304 before just sending a HelloRequest.
7305 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
7307 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
7308 reveal whether illegal block cipher padding was found or a MAC
7309 verification error occured. (Neither SSLerr() codes nor alerts
7310 are directly visible to potential attackers, but the information
7311 may leak via logfiles.)
7313 Similar changes are not required for the SSL 2.0 implementation
7314 because the number of padding bytes is sent in clear for SSL 2.0,
7315 and the extra bytes are just ignored. However ssl/s2_pkt.c
7316 failed to verify that the purported number of padding bytes is in
7320 *) Add OpenUNIX-8 support including shared libraries
7321 (Boyd Lynn Gerber <gerberb@zenez.com>).
7324 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
7325 'wristwatch attack' using huge encoding parameters (cf.
7326 James H. Manger's CRYPTO 2001 paper). Note that the
7327 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
7328 encoding parameters and hence was not vulnerable.
7331 *) BN_sqr() bug fix.
7332 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
7334 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
7335 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
7336 followed by modular reduction.
7337 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
7339 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
7340 equivalent based on BN_pseudo_rand() instead of BN_rand().
7343 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
7344 This function was broken, as the check for a new client hello message
7345 to handle SGC did not allow these large messages.
7346 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
7349 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
7352 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
7353 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
7356 *) Rework the configuration and shared library support for Tru64 Unix.
7357 The configuration part makes use of modern compiler features and
7358 still retains old compiler behavior for those that run older versions
7359 of the OS. The shared library support part includes a variant that
7360 uses the RPATH feature, and is available through the special
7361 configuration target "alpha-cc-rpath", which will never be selected
7363 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
7365 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
7366 with the same message size as in ssl3_get_certificate_request().
7367 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
7368 messages might inadvertently be reject as too long.
7369 [Petr Lampa <lampa@fee.vutbr.cz>]
7371 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
7374 *) Modified SSL library such that the verify_callback that has been set
7375 specificly for an SSL object with SSL_set_verify() is actually being
7376 used. Before the change, a verify_callback set with this function was
7377 ignored and the verify_callback() set in the SSL_CTX at the time of
7378 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
7379 to allow the necessary settings.
7382 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
7383 explicitly to NULL, as at least on Solaris 8 this seems not always to be
7384 done automatically (in contradiction to the requirements of the C
7385 standard). This made problems when used from OpenSSH.
7388 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
7389 dh->length and always used
7391 BN_rand_range(priv_key, dh->p).
7393 BN_rand_range() is not necessary for Diffie-Hellman, and this
7394 specific range makes Diffie-Hellman unnecessarily inefficient if
7395 dh->length (recommended exponent length) is much smaller than the
7396 length of dh->p. We could use BN_rand_range() if the order of
7397 the subgroup was stored in the DH structure, but we only have
7402 BN_rand(priv_key, l, ...)
7404 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
7410 RSA_eay_public_encrypt
7411 RSA_eay_private_decrypt
7412 RSA_eay_private_encrypt (signing)
7413 RSA_eay_public_decrypt (signature verification)
7415 (default implementations for RSA_public_encrypt,
7416 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
7417 always reject numbers >= n.
7420 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
7421 to synchronize access to 'locking_thread'. This is necessary on
7422 systems where access to 'locking_thread' (an 'unsigned long'
7423 variable) is not atomic.
7426 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
7427 *before* setting the 'crypto_lock_rand' flag. The previous code had
7428 a race condition if 0 is a valid thread ID.
7429 [Travis Vitek <vitek@roguewave.com>]
7431 *) Add support for shared libraries under Irix.
7432 [Albert Chin-A-Young <china@thewrittenword.com>]
7434 *) Add configuration option to build on Linux on both big-endian and
7436 [Ralf Baechle <ralf@uni-koblenz.de>]
7438 *) Add the possibility to create shared libraries on HP-UX.
7441 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
7443 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
7444 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
7445 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
7446 PRNG state recovery was possible based on the output of
7447 one PRNG request appropriately sized to gain knowledge on
7448 'md' followed by enough consecutive 1-byte PRNG requests
7449 to traverse all of 'state'.
7451 1. When updating 'md_local' (the current thread's copy of 'md')
7452 during PRNG output generation, hash all of the previous
7453 'md_local' value, not just the half used for PRNG output.
7455 2. Make the number of bytes from 'state' included into the hash
7456 independent from the number of PRNG bytes requested.
7458 The first measure alone would be sufficient to avoid
7459 Markku-Juhani's attack. (Actually it had never occurred
7460 to me that the half of 'md_local' used for chaining was the
7461 half from which PRNG output bytes were taken -- I had always
7462 assumed that the secret half would be used.) The second
7463 measure makes sure that additional data from 'state' is never
7464 mixed into 'md_local' in small portions; this heuristically
7465 further strengthens the PRNG.
7468 *) Fix crypto/bn/asm/mips3.s.
7471 *) When only the key is given to "enc", the IV is undefined. Print out
7472 an error message in this case.
7475 *) Handle special case when X509_NAME is empty in X509 printing routines.
7478 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
7479 positive and less than q.
7482 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
7483 used: it isn't thread safe and the add_lock_callback should handle
7485 [Paul Rose <Paul.Rose@bridge.com>]
7487 *) Verify that incoming data obeys the block size in
7488 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
7492 [Ulf Möller, Bodo Möller]
7494 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
7495 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
7496 when fixing the server behaviour for backwards-compatible 'client
7497 hello' messages. (Note that the attack is impractical against
7498 SSL 3.0 and TLS 1.0 anyway because length and version checking
7499 means that the probability of guessing a valid ciphertext is
7500 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
7503 Before 0.9.5, the countermeasure (hide the error by generating a
7504 random 'decryption result') did not work properly because
7505 ERR_clear_error() was missing, meaning that SSL_get_error() would
7506 detect the supposedly ignored error.
7508 Both problems are now fixed.
7511 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
7512 (previously it was 1024).
7515 *) Fix for compatibility mode trust settings: ignore trust settings
7516 unless some valid trust or reject settings are present.
7519 *) Fix for blowfish EVP: its a variable length cipher.
7522 *) Fix various bugs related to DSA S/MIME verification. Handle missing
7523 parameters in DSA public key structures and return an error in the
7524 DSA routines if parameters are absent.
7527 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
7528 in the current directory if neither $RANDFILE nor $HOME was set.
7529 RAND_file_name() in 0.9.6a returned NULL in this case. This has
7530 caused some confusion to Windows users who haven't defined $HOME.
7531 Thus RAND_file_name() is changed again: e_os.h can define a
7532 DEFAULT_HOME, which will be used if $HOME is not set.
7533 For Windows, we use "C:"; on other platforms, we still require
7534 environment variables.
7536 *) Move 'if (!initialized) RAND_poll()' into regions protected by
7537 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
7538 having multiple threads call RAND_poll() concurrently.
7541 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
7542 combination of a flag and a thread ID variable.
7543 Otherwise while one thread is in ssleay_rand_bytes (which sets the
7544 flag), *other* threads can enter ssleay_add_bytes without obeying
7545 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
7546 that they do not hold after the first thread unsets add_do_not_lock).
7549 *) Change bctest again: '-x' expressions are not available in all
7553 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
7555 *) Fix a couple of memory leaks in PKCS7_dataDecode()
7556 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
7558 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
7559 the default extension for executables, if any. Also, make the perl
7560 scripts that use symlink() to test if it really exists and use "cp"
7561 if it doesn't. All this made OpenSSL compilable and installable in
7565 *) Fix for asn1_GetSequence() for indefinite length constructed data.
7566 If SEQUENCE is length is indefinite just set c->slen to the total
7567 amount of data available.
7568 [Steve Henson, reported by shige@FreeBSD.org]
7569 [This change does not apply to 0.9.7.]
7571 *) Change bctest to avoid here-documents inside command substitution
7572 (workaround for FreeBSD /bin/sh bug).
7573 For compatibility with Ultrix, avoid shell functions (introduced
7574 in the bctest version that searches along $PATH).
7577 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
7578 with des_encrypt() defined on some operating systems, like Solaris
7582 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
7583 On the Importance of Eliminating Errors in Cryptographic
7584 Computations, J. Cryptology 14 (2001) 2, 101-119,
7585 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
7588 *) MIPS assembler BIGNUM division bug fix.
7591 *) Disabled incorrect Alpha assembler code.
7594 *) Fix PKCS#7 decode routines so they correctly update the length
7595 after reading an EOC for the EXPLICIT tag.
7597 [This change does not apply to 0.9.7.]
7599 *) Fix bug in PKCS#12 key generation routines. This was triggered
7600 if a 3DES key was generated with a 0 initial byte. Include
7601 PKCS12_BROKEN_KEYGEN compilation option to retain the old
7602 (but broken) behaviour.
7605 *) Enhance bctest to search for a working bc along $PATH and print
7607 [Tim Rice <tim@multitalents.net> via Richard Levitte]
7609 *) Fix memory leaks in err.c: free err_data string if necessary;
7610 don't write to the wrong index in ERR_set_error_data.
7613 *) Implement ssl23_peek (analogous to ssl23_read), which previously
7617 *) Replace rdtsc with _emit statements for VC++ version 5.
7618 [Jeremy Cooper <jeremy@baymoo.org>]
7620 *) Make it possible to reuse SSLv2 sessions.
7623 *) In copy_email() check for >= 0 as a return value for
7624 X509_NAME_get_index_by_NID() since 0 is a valid index.
7625 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
7627 *) Avoid coredump with unsupported or invalid public keys by checking if
7628 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
7629 PKCS7_verify() fails with non detached data.
7632 *) Don't use getenv in library functions when run as setuid/setgid.
7633 New function OPENSSL_issetugid().
7636 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
7637 due to incorrect handling of multi-threading:
7639 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
7641 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
7643 3. Count how many times MemCheck_off() has been called so that
7644 nested use can be treated correctly. This also avoids
7645 inband-signalling in the previous code (which relied on the
7646 assumption that thread ID 0 is impossible).
7649 *) Add "-rand" option also to s_client and s_server.
7652 *) Fix CPU detection on Irix 6.x.
7653 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
7654 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
7656 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
7659 [This change does not apply to 0.9.7.]
7661 *) Use the cached encoding of an X509_NAME structure rather than
7662 copying it. This is apparently the reason for the libsafe "errors"
7663 but the code is actually correct.
7666 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
7667 Bleichenbacher's DSA attack.
7668 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
7669 to be set and top=0 forces the highest bit to be set; top=-1 is new
7670 and leaves the highest bit random.
7671 [Ulf Moeller, Bodo Moeller]
7673 *) In the NCONF_...-based implementations for CONF_... queries
7674 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
7675 a temporary CONF structure with the data component set to NULL
7676 (which gives segmentation faults in lh_retrieve).
7677 Instead, use NULL for the CONF pointer in CONF_get_string and
7678 CONF_get_number (which may use environment variables) and directly
7679 return NULL from CONF_get_section.
7682 *) Fix potential buffer overrun for EBCDIC.
7685 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
7686 keyUsage if basicConstraints absent for a CA.
7689 *) Make SMIME_write_PKCS7() write mail header values with a format that
7690 is more generally accepted (no spaces before the semicolon), since
7691 some programs can't parse those values properly otherwise. Also make
7692 sure BIO's that break lines after each write do not create invalid
7696 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
7697 macros previously used would not encode an empty SEQUENCE OF
7698 and break the signature.
7700 [This change does not apply to 0.9.7.]
7702 *) Zero the premaster secret after deriving the master secret in
7706 *) Add some EVP_add_digest_alias registrations (as found in
7707 OpenSSL_add_all_digests()) to SSL_library_init()
7708 aka OpenSSL_add_ssl_algorithms(). This provides improved
7709 compatibility with peers using X.509 certificates
7710 with unconventional AlgorithmIdentifier OIDs.
7713 *) Fix for Irix with NO_ASM.
7714 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
7716 *) ./config script fixes.
7717 [Ulf Moeller, Richard Levitte]
7719 *) Fix 'openssl passwd -1'.
7722 *) Change PKCS12_key_gen_asc() so it can cope with non null
7723 terminated strings whose length is passed in the passlen
7724 parameter, for example from PEM callbacks. This was done
7725 by adding an extra length parameter to asc2uni().
7726 [Steve Henson, reported by <oddissey@samsung.co.kr>]
7728 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
7729 call failed, free the DSA structure.
7732 *) Fix to uni2asc() to cope with zero length Unicode strings.
7733 These are present in some PKCS#12 files.
7736 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
7737 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
7738 when writing a 32767 byte record.
7739 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
7741 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
7742 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
7744 (RSA objects have a reference count access to which is protected
7745 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
7746 so they are meant to be shared between threads.)
7747 [Bodo Moeller, Geoff Thorpe; original patch submitted by
7748 "Reddie, Steven" <Steven.Reddie@ca.com>]
7750 *) Fix a deadlock in CRYPTO_mem_leaks().
7753 *) Use better test patterns in bntest.
7756 *) rand_win.c fix for Borland C.
7759 *) BN_rshift bugfix for n == 0.
7762 *) Add a 'bctest' script that checks for some known 'bc' bugs
7763 so that 'make test' does not abort just because 'bc' is broken.
7766 *) Store verify_result within SSL_SESSION also for client side to
7767 avoid potential security hole. (Re-used sessions on the client side
7768 always resulted in verify_result==X509_V_OK, not using the original
7769 result of the server certificate verification.)
7772 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
7773 SSL3_RT_APPLICATION_DATA, return 0.
7774 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
7778 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
7779 releases, have been re-implemented by renaming the previous
7780 implementations of ssl2_read and ssl3_read to ssl2_read_internal
7781 and ssl3_read_internal, respectively, and adding 'peek' parameters
7782 to them. The new ssl[23]_{read,peek} functions are calls to
7783 ssl[23]_read_internal with the 'peek' flag set appropriately.
7784 A 'peek' parameter has also been added to ssl3_read_bytes, which
7785 does the actual work for ssl3_read_internal.
7788 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
7789 the method-specific "init()" handler. Also clean up ex_data after
7790 calling the method-specific "finish()" handler. Previously, this was
7791 happening the other way round.
7794 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
7795 The previous value, 12, was not always sufficient for BN_mod_exp().
7798 *) Make sure that shared libraries get the internal name engine with
7799 the full version number and not just 0. This should mark the
7800 shared libraries as not backward compatible. Of course, this should
7801 be changed again when we can guarantee backward binary compatibility.
7804 *) Fix typo in get_cert_by_subject() in by_dir.c
7805 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
7807 *) Rework the system to generate shared libraries:
7809 - Make note of the expected extension for the shared libraries and
7810 if there is a need for symbolic links from for example libcrypto.so.0
7811 to libcrypto.so.0.9.7. There is extended info in Configure for
7814 - Make as few rebuilds of the shared libraries as possible.
7816 - Still avoid linking the OpenSSL programs with the shared libraries.
7818 - When installing, install the shared libraries separately from the
7822 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
7824 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
7825 and not in SSL_clear because the latter is also used by the
7826 accept/connect functions; previously, the settings made by
7827 SSL_set_read_ahead would be lost during the handshake.
7828 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
7830 *) Correct util/mkdef.pl to be selective about disabled algorithms.
7831 Previously, it would create entries for disabled algorithms no
7835 *) Added several new manual pages for SSL_* function.
7838 Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
7840 *) In ssl23_get_client_hello, generate an error message when faced
7841 with an initial SSL 3.0/TLS record that is too small to contain the
7842 first two bytes of the ClientHello message, i.e. client_version.
7843 (Note that this is a pathologic case that probably has never happened
7844 in real life.) The previous approach was to use the version number
7845 from the record header as a substitute; but our protocol choice
7846 should not depend on that one because it is not authenticated
7847 by the Finished messages.
7850 *) More robust randomness gathering functions for Windows.
7851 [Jeffrey Altman <jaltman@columbia.edu>]
7853 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
7854 not set then we don't setup the error code for issuer check errors
7855 to avoid possibly overwriting other errors which the callback does
7856 handle. If an application does set the flag then we assume it knows
7857 what it is doing and can handle the new informational codes
7861 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
7862 a general "ANY" type, as such it should be able to decode anything
7863 including tagged types. However it didn't check the class so it would
7864 wrongly interpret tagged types in the same way as their universal
7865 counterpart and unknown types were just rejected. Changed so that the
7866 tagged and unknown types are handled in the same way as a SEQUENCE:
7867 that is the encoding is stored intact. There is also a new type
7868 "V_ASN1_OTHER" which is used when the class is not universal, in this
7869 case we have no idea what the actual type is so we just lump them all
7873 *) On VMS, stdout may very well lead to a file that is written to
7874 in a record-oriented fashion. That means that every write() will
7875 write a separate record, which will be read separately by the
7876 programs trying to read from it. This can be very confusing.
7878 The solution is to put a BIO filter in the way that will buffer
7879 text until a linefeed is reached, and then write everything a
7880 line at a time, so every record written will be an actual line,
7881 not chunks of lines and not (usually doesn't happen, but I've
7882 seen it once) several lines in one record. BIO_f_linebuffer() is
7885 Currently, it's a VMS-only method, because that's where it has
7886 been tested well enough.
7889 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
7890 it can return incorrect results.
7891 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
7892 but it was in 0.9.6-beta[12].)
7895 *) Disable the check for content being present when verifying detached
7896 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
7897 include zero length content when signing messages.
7900 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
7901 BIO_ctrl (for BIO pairs).
7904 *) Add DSO method for VMS.
7907 *) Bug fix: Montgomery multiplication could produce results with the
7911 *) Add RPM specification openssl.spec and modify it to build three
7912 packages. The default package contains applications, application
7913 documentation and run-time libraries. The devel package contains
7914 include files, static libraries and function documentation. The
7915 doc package contains the contents of the doc directory. The original
7916 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
7919 *) Add a large number of documentation files for many SSL routines.
7920 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
7922 *) Add a configuration entry for Sony News 4.
7923 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
7925 *) Don't set the two most significant bits to one when generating a
7926 random number < q in the DSA library.
7929 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
7930 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
7931 the underlying transport is blocking) if a handshake took place.
7932 (The default behaviour is needed by applications such as s_client
7933 and s_server that use select() to determine when to use SSL_read;
7934 but for applications that know in advance when to expect data, it
7935 just makes things more complicated.)
7938 *) Add RAND_egd_bytes(), which gives control over the number of bytes read
7942 *) Add a few more EBCDIC conditionals that make `req' and `x509'
7943 work better on such systems.
7944 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
7946 *) Add two demo programs for PKCS12_parse() and PKCS12_create().
7947 Update PKCS12_parse() so it copies the friendlyName and the
7948 keyid to the certificates aux info.
7951 *) Fix bug in PKCS7_verify() which caused an infinite loop
7952 if there was more than one signature.
7953 [Sven Uszpelkat <su@celocom.de>]
7955 *) Major change in util/mkdef.pl to include extra information
7956 about each symbol, as well as presenting variables as well
7957 as functions. This change means that there's n more need
7958 to rebuild the .num files when some algorithms are excluded.
7961 *) Allow the verify time to be set by an application,
7962 rather than always using the current time.
7965 *) Phase 2 verify code reorganisation. The certificate
7966 verify code now looks up an issuer certificate by a
7967 number of criteria: subject name, authority key id
7968 and key usage. It also verifies self signed certificates
7969 by the same criteria. The main comparison function is
7970 X509_check_issued() which performs these checks.
7972 Lot of changes were necessary in order to support this
7973 without completely rewriting the lookup code.
7975 Authority and subject key identifier are now cached.
7977 The LHASH 'certs' is X509_STORE has now been replaced
7978 by a STACK_OF(X509_OBJECT). This is mainly because an
7979 LHASH can't store or retrieve multiple objects with
7980 the same hash value.
7982 As a result various functions (which were all internal
7983 use only) have changed to handle the new X509_STORE
7984 structure. This will break anything that messed round
7985 with X509_STORE internally.
7987 The functions X509_STORE_add_cert() now checks for an
7988 exact match, rather than just subject name.
7990 The X509_STORE API doesn't directly support the retrieval
7991 of multiple certificates matching a given criteria, however
7992 this can be worked round by performing a lookup first
7993 (which will fill the cache with candidate certificates)
7994 and then examining the cache for matches. This is probably
7995 the best we can do without throwing out X509_LOOKUP
7996 entirely (maybe later...).
7998 The X509_VERIFY_CTX structure has been enhanced considerably.
8000 All certificate lookup operations now go via a get_issuer()
8001 callback. Although this currently uses an X509_STORE it
8002 can be replaced by custom lookups. This is a simple way
8003 to bypass the X509_STORE hackery necessary to make this
8004 work and makes it possible to use more efficient techniques
8005 in future. A very simple version which uses a simple
8006 STACK for its trusted certificate store is also provided
8007 using X509_STORE_CTX_trusted_stack().
8009 The verify_cb() and verify() callbacks now have equivalents
8010 in the X509_STORE_CTX structure.
8012 X509_STORE_CTX also has a 'flags' field which can be used
8013 to customise the verify behaviour.
8016 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
8017 excludes S/MIME capabilities.
8020 *) When a certificate request is read in keep a copy of the
8021 original encoding of the signed data and use it when outputing
8022 again. Signatures then use the original encoding rather than
8023 a decoded, encoded version which may cause problems if the
8024 request is improperly encoded.
8027 *) For consistency with other BIO_puts implementations, call
8028 buffer_write(b, ...) directly in buffer_puts instead of calling
8031 In BIO_puts, increment b->num_write as in BIO_write.
8032 [Peter.Sylvester@EdelWeb.fr]
8034 *) Fix BN_mul_word for the case where the word is 0. (We have to use
8035 BN_zero, we may not return a BIGNUM with an array consisting of
8039 *) Avoid calling abort() from within the library when problems are
8040 detected, except if preprocessor symbols have been defined
8041 (such as REF_CHECK, BN_DEBUG etc.).
8044 *) New openssl application 'rsautl'. This utility can be
8045 used for low level RSA operations. DER public key
8046 BIO/fp routines also added.
8049 *) New Configure entry and patches for compiling on QNX 4.
8050 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
8052 *) A demo state-machine implementation was sponsored by
8053 Nuron (http://www.nuron.com/) and is now available in
8054 demos/state_machine.
8057 *) New options added to the 'dgst' utility for signature
8058 generation and verification.
8061 *) Unrecognized PKCS#7 content types are now handled via a
8062 catch all ASN1_TYPE structure. This allows unsupported
8063 types to be stored as a "blob" and an application can
8064 encode and decode it manually.
8067 *) Fix various signed/unsigned issues to make a_strex.c
8069 [Oscar Jacobsson <oscar.jacobsson@celocom.com>]
8071 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
8072 length if passed a buffer. ASN1_INTEGER_to_BN failed
8073 if passed a NULL BN and its argument was negative.
8074 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
8076 *) Modification to PKCS#7 encoding routines to output definite
8077 length encoding. Since currently the whole structures are in
8078 memory there's not real point in using indefinite length
8079 constructed encoding. However if OpenSSL is compiled with
8080 the flag PKCS7_INDEFINITE_ENCODING the old form is used.
8083 *) Added BIO_vprintf() and BIO_vsnprintf().
8086 *) Added more prefixes to parse for in the the strings written
8087 through a logging bio, to cover all the levels that are available
8088 through syslog. The prefixes are now:
8090 PANIC, EMERG, EMR => LOG_EMERG
8091 ALERT, ALR => LOG_ALERT
8092 CRIT, CRI => LOG_CRIT
8093 ERROR, ERR => LOG_ERR
8094 WARNING, WARN, WAR => LOG_WARNING
8095 NOTICE, NOTE, NOT => LOG_NOTICE
8096 INFO, INF => LOG_INFO
8097 DEBUG, DBG => LOG_DEBUG
8099 and as before, if none of those prefixes are present at the
8100 beginning of the string, LOG_ERR is chosen.
8102 On Win32, the LOG_* levels are mapped according to this:
8104 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
8105 LOG_WARNING => EVENTLOG_WARNING_TYPE
8106 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
8110 *) Made it possible to reconfigure with just the configuration
8111 argument "reconf" or "reconfigure". The command line arguments
8112 are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
8113 and are retrieved from there when reconfiguring.
8117 [Assar Westerlund <assar@sics.se>, Richard Levitte]
8119 *) Add the arguments -CAfile and -CApath to the pkcs12 utility.
8122 *) The obj_dat.pl script was messing up the sorting of object
8123 names. The reason was that it compared the quoted version
8124 of strings as a result "OCSP" > "OCSP Signing" because
8125 " > SPACE. Changed script to store unquoted versions of
8126 names and add quotes on output. It was also omitting some
8127 names from the lookup table if they were given a default
8128 value (that is if SN is missing it is given the same
8129 value as LN and vice versa), these are now added on the
8130 grounds that if an object has a name we should be able to
8131 look it up. Finally added warning output when duplicate
8132 short or long names are found.
8135 *) Changes needed for Tandem NSK.
8136 [Scott Uroff <scott@xypro.com>]
8138 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
8139 RSA_padding_check_SSLv23(), special padding was never detected
8140 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
8141 version rollback attacks was not effective.
8143 In s23_clnt.c, don't use special rollback-attack detection padding
8144 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
8145 client; similarly, in s23_srvr.c, don't do the rollback check if
8146 SSL 2.0 is the only protocol enabled in the server.
8149 *) Make it possible to get hexdumps of unprintable data with 'openssl
8150 asn1parse'. By implication, the functions ASN1_parse_dump() and
8151 BIO_dump_indent() are added.
8154 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
8155 these print out strings and name structures based on various
8156 flags including RFC2253 support and proper handling of
8157 multibyte characters. Added options to the 'x509' utility
8158 to allow the various flags to be set.
8161 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
8162 Also change the functions X509_cmp_current_time() and
8163 X509_gmtime_adj() work with an ASN1_TIME structure,
8164 this will enable certificates using GeneralizedTime in validity
8165 dates to be checked.
8168 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid
8169 negative public key encodings) on by default,
8170 NO_NEG_PUBKEY_BUG can be set to disable it.
8173 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
8174 content octets. An i2c_ASN1_OBJECT is unnecessary because
8175 the encoding can be trivially obtained from the structure.
8178 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
8179 not read locks (CRYPTO_r_[un]lock).
8182 *) A first attempt at creating official support for shared
8183 libraries through configuration. I've kept it so the
8184 default is static libraries only, and the OpenSSL programs
8185 are always statically linked for now, but there are
8186 preparations for dynamic linking in place.
8187 This has been tested on Linux and Tru64.
8190 *) Randomness polling function for Win9x, as described in:
8191 Peter Gutmann, Software Generation of Practically Strong
8195 *) Fix so PRNG is seeded in req if using an already existing
8199 *) New options to smime application. -inform and -outform
8200 allow alternative formats for the S/MIME message including
8201 PEM and DER. The -content option allows the content to be
8202 specified separately. This should allow things like Netscape
8203 form signing output easier to verify.
8206 *) Fix the ASN1 encoding of tags using the 'long form'.
8209 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
8210 STRING types. These convert content octets to and from the
8211 underlying type. The actual tag and length octets are
8212 already assumed to have been read in and checked. These
8213 are needed because all other string types have virtually
8214 identical handling apart from the tag. By having versions
8215 of the ASN1 functions that just operate on content octets
8216 IMPLICIT tagging can be handled properly. It also allows
8217 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
8218 and ASN1_INTEGER are identical apart from the tag.
8221 *) Change the handling of OID objects as follows:
8223 - New object identifiers are inserted in objects.txt, following
8224 the syntax given in objects.README.
8225 - objects.pl is used to process obj_mac.num and create a new
8227 - obj_dat.pl is used to create a new obj_dat.h, using the data in
8230 This is currently kind of a hack, and the perl code in objects.pl
8231 isn't very elegant, but it works as I intended. The simplest way
8232 to check that it worked correctly is to look in obj_dat.h and
8233 check the array nid_objs and make sure the objects haven't moved
8234 around (this is important!). Additions are OK, as well as
8235 consistent name changes.
8238 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
8241 *) Addition of the command line parameter '-rand file' to 'openssl req'.
8242 The given file adds to whatever has already been seeded into the
8243 random pool through the RANDFILE configuration file option or
8244 environment variable, or the default random state file.
8247 *) mkstack.pl now sorts each macro group into lexical order.
8248 Previously the output order depended on the order the files
8249 appeared in the directory, resulting in needless rewriting
8253 *) Patches to make OpenSSL compile under Win32 again. Mostly
8254 work arounds for the VC++ problem that it treats func() as
8255 func(void). Also stripped out the parts of mkdef.pl that
8256 added extra typesafe functions: these no longer exist.
8259 *) Reorganisation of the stack code. The macros are now all
8260 collected in safestack.h . Each macro is defined in terms of
8261 a "stack macro" of the form SKM_<name>(type, a, b). The
8262 DEBUG_SAFESTACK is now handled in terms of function casts,
8263 this has the advantage of retaining type safety without the
8264 use of additional functions. If DEBUG_SAFESTACK is not defined
8265 then the non typesafe macros are used instead. Also modified the
8266 mkstack.pl script to handle the new form. Needs testing to see
8267 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
8268 the default if no major problems. Similar behaviour for ASN1_SET_OF
8269 and PKCS12_STACK_OF.
8272 *) When some versions of IIS use the 'NET' form of private key the
8273 key derivation algorithm is different. Normally MD5(password) is
8274 used as a 128 bit RC4 key. In the modified case
8275 MD5(MD5(password) + "SGCKEYSALT") is used instead. Added some
8276 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
8277 as the old Netscape_RSA functions except they have an additional
8278 'sgckey' parameter which uses the modified algorithm. Also added
8279 an -sgckey command line option to the rsa utility. Thanks to
8280 Adrian Peck <bertie@ncipher.com> for posting details of the modified
8281 algorithm to openssl-dev.
8284 *) The evp_local.h macros were using 'c.##kname' which resulted in
8285 invalid expansion on some systems (SCO 5.0.5 for example).
8286 Corrected to 'c.kname'.
8287 [Phillip Porch <root@theporch.com>]
8289 *) New X509_get1_email() and X509_REQ_get1_email() functions that return
8290 a STACK of email addresses from a certificate or request, these look
8291 in the subject name and the subject alternative name extensions and
8292 omit any duplicate addresses.
8295 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows.
8296 This makes DSA verification about 2 % faster.
8299 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
8300 (meaning that now 2^5 values will be precomputed, which is only 4 KB
8301 plus overhead for 1024 bit moduli).
8302 This makes exponentiations about 0.5 % faster for 1024 bit
8303 exponents (as measured by "openssl speed rsa2048").
8306 *) Rename memory handling macros to avoid conflicts with other
8308 Malloc => OPENSSL_malloc
8309 Malloc_locked => OPENSSL_malloc_locked
8310 Realloc => OPENSSL_realloc
8311 Free => OPENSSL_free
8314 *) New function BN_mod_exp_mont_word for small bases (roughly 15%
8315 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
8318 *) CygWin32 support.
8319 [John Jarvie <jjarvie@newsguy.com>]
8321 *) The type-safe stack code has been rejigged. It is now only compiled
8322 in when OpenSSL is configured with the DEBUG_SAFESTACK option and
8323 by default all type-specific stack functions are "#define"d back to
8324 standard stack functions. This results in more streamlined output
8325 but retains the type-safety checking possibilities of the original
8329 *) The STACK code has been cleaned up, and certain type declarations
8330 that didn't make a lot of sense have been brought in line. This has
8331 also involved a cleanup of sorts in safestack.h to more correctly
8332 map type-safe stack functions onto their plain stack counterparts.
8333 This work has also resulted in a variety of "const"ifications of
8334 lots of the code, especially "_cmp" operations which should normally
8335 be prototyped with "const" parameters anyway.
8338 *) When generating bytes for the first time in md_rand.c, 'stir the pool'
8339 by seeding with STATE_SIZE dummy bytes (with zero entropy count).
8340 (The PRNG state consists of two parts, the large pool 'state' and 'md',
8341 where all of 'md' is used each time the PRNG is used, but 'state'
8342 is used only indexed by a cyclic counter. As entropy may not be
8343 well distributed from the beginning, 'md' is important as a
8344 chaining variable. However, the output function chains only half
8345 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
8346 all of 'md', and seeding with STATE_SIZE dummy bytes will result
8347 in all of 'state' being rewritten, with the new values depending
8348 on virtually all of 'md'. This overcomes the 80 bit limitation.)
8351 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
8352 the handshake is continued after ssl_verify_cert_chain();
8353 otherwise, if SSL_VERIFY_NONE is set, remaining error codes
8354 can lead to 'unexplainable' connection aborts later.
8355 [Bodo Moeller; problem tracked down by Lutz Jaenicke]
8357 *) Major EVP API cipher revision.
8358 Add hooks for extra EVP features. This allows various cipher
8359 parameters to be set in the EVP interface. Support added for variable
8360 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
8361 setting of RC2 and RC5 parameters.
8363 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
8366 Remove lots of duplicated code from the EVP library. For example *every*
8367 cipher init() function handles the 'iv' in the same way according to the
8368 cipher mode. They also all do nothing if the 'key' parameter is NULL and
8369 for CFB and OFB modes they zero ctx->num.
8371 New functionality allows removal of S/MIME code RC2 hack.
8373 Most of the routines have the same form and so can be declared in terms
8376 By shifting this to the top level EVP_CipherInit() it can be removed from
8377 all individual ciphers. If the cipher wants to handle IVs or keys
8378 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
8381 Change lots of functions like EVP_EncryptUpdate() to now return a
8382 value: although software versions of the algorithms cannot fail
8383 any installed hardware versions can.
8386 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
8387 this option is set, tolerate broken clients that send the negotiated
8388 protocol version number instead of the requested protocol version
8392 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag;
8393 i.e. non-zero for export ciphersuites, zero otherwise.
8394 Previous versions had this flag inverted, inconsistent with
8395 rsa_tmp_cb (..._TMP_RSA_CB).
8396 [Bodo Moeller; problem reported by Amit Chopra]
8398 *) Add missing DSA library text string. Work around for some IIS
8399 key files with invalid SEQUENCE encoding.
8402 *) Add a document (doc/standards.txt) that list all kinds of standards
8403 and so on that are implemented in OpenSSL.
8406 *) Enhance c_rehash script. Old version would mishandle certificates
8407 with the same subject name hash and wouldn't handle CRLs at all.
8408 Added -fingerprint option to crl utility, to support new c_rehash
8412 *) Eliminate non-ANSI declarations in crypto.h and stack.h.
8415 *) Fix for SSL server purpose checking. Server checking was
8416 rejecting certificates which had extended key usage present
8417 but no ssl client purpose.
8418 [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>]
8420 *) Make PKCS#12 code work with no password. The PKCS#12 spec
8421 is a little unclear about how a blank password is handled.
8422 Since the password in encoded as a BMPString with terminating
8423 double NULL a zero length password would end up as just the
8424 double NULL. However no password at all is different and is
8425 handled differently in the PKCS#12 key generation code. NS
8426 treats a blank password as zero length. MSIE treats it as no
8427 password on export: but it will try both on import. We now do
8428 the same: PKCS12_parse() tries zero length and no password if
8429 the password is set to "" or NULL (NULL is now a valid password:
8430 it wasn't before) as does the pkcs12 application.
8433 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
8434 perror when PEM_read_bio_X509_REQ fails, the error message must
8435 be obtained from the error queue.
8438 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
8439 it in ERR_remove_state if appropriate, and change ERR_get_state
8440 accordingly to avoid race conditions (this is necessary because
8441 thread_hash is no longer constant once set).
8444 *) Bugfix for linux-elf makefile.one.
8447 *) RSA_get_default_method() will now cause a default
8448 RSA_METHOD to be chosen if one doesn't exist already.
8449 Previously this was only set during a call to RSA_new()
8450 or RSA_new_method(NULL) meaning it was possible for
8451 RSA_get_default_method() to return NULL.
8454 *) Added native name translation to the existing DSO code
8455 that will convert (if the flag to do so is set) filenames
8456 that are sufficiently small and have no path information
8457 into a canonical native form. Eg. "blah" converted to
8458 "libblah.so" or "blah.dll" etc.
8461 *) New function ERR_error_string_n(e, buf, len) which is like
8462 ERR_error_string(e, buf), but writes at most 'len' bytes
8463 including the 0 terminator. For ERR_error_string_n, 'buf'
8465 [Damien Miller <djm@mindrot.org>, Bodo Moeller]
8467 *) CONF library reworked to become more general. A new CONF
8468 configuration file reader "class" is implemented as well as a
8469 new functions (NCONF_*, for "New CONF") to handle it. The now
8470 old CONF_* functions are still there, but are reimplemented to
8471 work in terms of the new functions. Also, a set of functions
8472 to handle the internal storage of the configuration data is
8473 provided to make it easier to write new configuration file
8474 reader "classes" (I can definitely see something reading a
8475 configuration file in XML format, for example), called _CONF_*,
8476 or "the configuration storage API"...
8478 The new configuration file reading functions are:
8480 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
8481 NCONF_get_section, NCONF_get_string, NCONF_get_numbre
8483 NCONF_default, NCONF_WIN32
8485 NCONF_dump_fp, NCONF_dump_bio
8487 NCONF_default and NCONF_WIN32 are method (or "class") choosers,
8488 NCONF_new creates a new CONF object. This works in the same way
8489 as other interfaces in OpenSSL, like the BIO interface.
8490 NCONF_dump_* dump the internal storage of the configuration file,
8491 which is useful for debugging. All other functions take the same
8492 arguments as the old CONF_* functions wth the exception of the
8493 first that must be a `CONF *' instead of a `LHASH *'.
8495 To make it easer to use the new classes with the old CONF_* functions,
8496 the function CONF_set_default_method is provided.
8499 *) Add '-tls1' option to 'openssl ciphers', which was already
8500 mentioned in the documentation but had not been implemented.
8501 (This option is not yet really useful because even the additional
8502 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
8505 *) Initial DSO code added into libcrypto for letting OpenSSL (and
8506 OpenSSL-based applications) load shared libraries and bind to
8507 them in a portable way.
8508 [Geoff Thorpe, with contributions from Richard Levitte]
8510 Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
8512 *) Make sure _lrotl and _lrotr are only used with MSVC.
8514 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
8515 (the default implementation of RAND_status).
8517 *) Rename openssl x509 option '-crlext', which was added in 0.9.5,
8518 to '-clrext' (= clear extensions), as intended and documented.
8519 [Bodo Moeller; inconsistency pointed out by Michael Attili
8522 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length
8523 was larger than the MD block size.
8524 [Steve Henson, pointed out by Yost William <YostW@tce.com>]
8526 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
8527 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
8528 using the passed key: if the passed key was a private key the result
8529 of X509_print(), for example, would be to print out all the private key
8533 *) des_quad_cksum() byte order bug fix.
8534 [Ulf Möller, using the problem description in krb4-0.9.7, where
8535 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>]
8537 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
8539 [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>]
8541 *) For easily testing in shell scripts whether some command
8542 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
8543 returns with exit code 0 iff no command of the given name is available.
8544 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
8545 the output goes to stdout and nothing is printed to stderr.
8546 Additional arguments are always ignored.
8548 Since for each cipher there is a command of the same name,
8549 the 'no-cipher' compilation switches can be tested this way.
8551 ('openssl no-XXX' is not able to detect pseudo-commands such
8552 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
8555 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
8558 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
8559 is set; it will be thrown away anyway because each handshake creates
8561 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
8562 to parameters -- in previous versions (since OpenSSL 0.9.3) the
8563 'default key' from SSL_CTX_set_tmp_dh would always be lost, meaning
8564 you effectivly got SSL_OP_SINGLE_DH_USE when using this macro.
8567 *) New s_client option -ign_eof: EOF at stdin is ignored, and
8568 'Q' and 'R' lose their special meanings (quit/renegotiate).
8569 This is part of what -quiet does; unlike -quiet, -ign_eof
8570 does not suppress any output.
8573 *) Add compatibility options to the purpose and trust code. The
8574 purpose X509_PURPOSE_ANY is "any purpose" which automatically
8575 accepts a certificate or CA, this was the previous behaviour,
8576 with all the associated security issues.
8578 X509_TRUST_COMPAT is the old trust behaviour: only and
8579 automatically trust self signed roots in certificate store. A
8580 new trust setting X509_TRUST_DEFAULT is used to specify that
8581 a purpose has no associated trust setting and it should instead
8582 use the value in the default purpose.
8585 *) Fix the PKCS#8 DSA private key code so it decodes keys again
8586 and fix a memory leak.
8589 *) In util/mkerr.pl (which implements 'make errors'), preserve
8590 reason strings from the previous version of the .c file, as
8591 the default to have only downcase letters (and digits) in
8592 automatically generated reasons codes is not always appropriate.
8595 *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
8596 using strerror. Previously, ERR_reason_error_string() returned
8597 library names as reason strings for SYSerr; but SYSerr is a special
8598 case where small numbers are errno values, not library numbers.
8601 *) Add '-dsaparam' option to 'openssl dhparam' application. This
8602 converts DSA parameters into DH parameters. (When creating parameters,
8603 DSA_generate_parameters is used.)
8606 *) Include 'length' (recommended exponent length) in C code generated
8607 by 'openssl dhparam -C'.
8610 *) The second argument to set_label in perlasm was already being used
8611 so couldn't be used as a "file scope" flag. Moved to third argument
8615 *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
8616 instead of RAND_bytes for encryption IVs and salts.
8619 *) Include RAND_status() into RAND_METHOD instead of implementing
8620 it only for md_rand.c Otherwise replacing the PRNG by calling
8621 RAND_set_rand_method would be impossible.
8624 *) Don't let DSA_generate_key() enter an infinite loop if the random
8625 number generation fails.
8628 *) New 'rand' application for creating pseudo-random output.
8631 *) Added configuration support for Linux/IA64
8632 [Rolf Haberrecker <rolf@suse.de>]
8634 *) Assembler module support for Mingw32.
8637 *) Shared library support for HPUX (in shlib/).
8638 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous]
8640 *) Shared library support for Solaris gcc.
8641 [Lutz Behnke <behnke@trustcenter.de>]
8643 Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
8645 *) PKCS7_encrypt() was adding text MIME headers twice because they
8646 were added manually and by SMIME_crlf_copy().
8649 *) In bntest.c don't call BN_rand with zero bits argument.
8650 [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>]
8652 *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
8653 case was implemented. This caused BN_div_recp() to fail occasionally.
8656 *) Add an optional second argument to the set_label() in the perl
8657 assembly language builder. If this argument exists and is set
8658 to 1 it signals that the assembler should use a symbol whose
8659 scope is the entire file, not just the current function. This
8660 is needed with MASM which uses the format label:: for this scope.
8661 [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>]
8663 *) Change the ASN1 types so they are typedefs by default. Before
8664 almost all types were #define'd to ASN1_STRING which was causing
8665 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
8669 *) Change names of new functions to the new get1/get0 naming
8670 convention: After 'get1', the caller owns a reference count
8671 and has to call ..._free; 'get0' returns a pointer to some
8672 data structure without incrementing reference counters.
8673 (Some of the existing 'get' functions increment a reference
8674 counter, some don't.)
8675 Similarly, 'set1' and 'add1' functions increase reference
8676 counters or duplicate objects.
8679 *) Allow for the possibility of temp RSA key generation failure:
8680 the code used to assume it always worked and crashed on failure.
8683 *) Fix potential buffer overrun problem in BIO_printf().
8684 [Ulf Möller, using public domain code by Patrick Powell; problem
8685 pointed out by David Sacerdote <das33@cornell.edu>]
8687 *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions
8688 RAND_egd() and RAND_status(). In the command line application,
8689 the EGD socket can be specified like a seed file using RANDFILE
8693 *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
8694 Some CAs (e.g. Verisign) distribute certificates in this form.
8697 *) Remove the SSL_ALLOW_ADH compile option and set the default cipher
8698 list to exclude them. This means that no special compilation option
8699 is needed to use anonymous DH: it just needs to be included in the
8703 *) Change the EVP_MD_CTX_type macro so its meaning consistent with
8704 EVP_MD_type. The old functionality is available in a new macro called
8705 EVP_MD_md(). Change code that uses it and update docs.
8708 *) ..._ctrl functions now have corresponding ..._callback_ctrl functions
8709 where the 'void *' argument is replaced by a function pointer argument.
8710 Previously 'void *' was abused to point to functions, which works on
8711 many platforms, but is not correct. As these functions are usually
8712 called by macros defined in OpenSSL header files, most source code
8713 should work without changes.
8716 *) <openssl/opensslconf.h> (which is created by Configure) now contains
8717 sections with information on -D... compiler switches used for
8718 compiling the library so that applications can see them. To enable
8719 one of these sections, a pre-processor symbol OPENSSL_..._DEFINES
8720 must be defined. E.g.,
8721 #define OPENSSL_ALGORITHM_DEFINES
8722 #include <openssl/opensslconf.h>
8723 defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc.
8724 [Richard Levitte, Ulf and Bodo Möller]
8726 *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
8730 *) Change the 'other' type in certificate aux info to a STACK_OF
8731 X509_ALGOR. Although not an AlgorithmIdentifier as such it has
8732 the required ASN1 format: arbitrary types determined by an OID.
8735 *) Add some PEM_write_X509_REQ_NEW() functions and a command line
8736 argument to 'req'. This is not because the function is newer or
8737 better than others it just uses the work 'NEW' in the certificate
8738 request header lines. Some software needs this.
8741 *) Reorganise password command line arguments: now passwords can be
8742 obtained from various sources. Delete the PEM_cb function and make
8743 it the default behaviour: i.e. if the callback is NULL and the
8744 usrdata argument is not NULL interpret it as a null terminated pass
8745 phrase. If usrdata and the callback are NULL then the pass phrase
8746 is prompted for as usual.
8749 *) Add support for the Compaq Atalla crypto accelerator. If it is installed,
8750 the support is automatically enabled. The resulting binaries will
8751 autodetect the card and use it if present.
8752 [Ben Laurie and Compaq Inc.]
8754 *) Work around for Netscape hang bug. This sends certificate request
8755 and server done in one record. Since this is perfectly legal in the
8756 SSL/TLS protocol it isn't a "bug" option and is on by default. See
8757 the bugs/SSLv3 entry for more info.
8760 *) HP-UX tune-up: new unified configs, HP C compiler bug workaround.
8763 *) Add -rand argument to smime and pkcs12 applications and read/write
8767 *) New 'passwd' tool for crypt(3) and apr1 password hashes.
8770 *) Add command line password options to the remaining applications.
8773 *) Bug fix for BN_div_recp() for numerators with an even number of
8777 *) More tests in bntest.c, and changed test_bn output.
8780 *) ./config recognizes MacOS X now.
8783 *) Bug fix for BN_div() when the first words of num and divsor are
8784 equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0).
8787 *) Add support for various broken PKCS#8 formats, and command line
8788 options to produce them.
8791 *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
8792 get temporary BIGNUMs from a BN_CTX.
8795 *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
8799 *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and
8800 include a #define from the old name to the new. The original intent
8801 was that statically linked binaries could for example just call
8802 SSLeay_add_all_ciphers() to just add ciphers to the table and not
8803 link with digests. This never worked because SSLeay_add_all_digests()
8804 and SSLeay_add_all_ciphers() were in the same source file so calling
8805 one would link with the other. They are now in separate source files.
8808 *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
8811 *) Use a less unusual form of the Miller-Rabin primality test (it used
8812 a binary algorithm for exponentiation integrated into the Miller-Rabin
8813 loop, our standard modexp algorithms are faster).
8816 *) Support for the EBCDIC character set completed.
8817 [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>]
8819 *) Source code cleanups: use const where appropriate, eliminate casts,
8820 use void * instead of char * in lhash.
8823 *) Bugfix: ssl3_send_server_key_exchange was not restartable
8824 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
8825 this the server could overwrite ephemeral keys that the client
8829 *) Turn DSA_is_prime into a macro that calls BN_is_prime,
8830 using 50 iterations of the Rabin-Miller test.
8832 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
8833 iterations of the Rabin-Miller test as required by the appendix
8834 to FIPS PUB 186[-1]) instead of DSA_is_prime.
8835 As BN_is_prime_fasttest includes trial division, DSA parameter
8836 generation becomes much faster.
8838 This implies a change for the callback functions in DSA_is_prime
8839 and DSA_generate_parameters: The callback function is called once
8840 for each positive witness in the Rabin-Miller test, not just
8841 occasionally in the inner loop; and the parameters to the
8842 callback function now provide an iteration count for the outer
8843 loop rather than for the current invocation of the inner loop.
8844 DSA_generate_parameters additionally can call the callback
8845 function with an 'iteration count' of -1, meaning that a
8846 candidate has passed the trial division test (when q is generated
8847 from an application-provided seed, trial division is skipped).
8850 *) New function BN_is_prime_fasttest that optionally does trial
8851 division before starting the Rabin-Miller test and has
8852 an additional BN_CTX * argument (whereas BN_is_prime always
8853 has to allocate at least one BN_CTX).
8854 'callback(1, -1, cb_arg)' is called when a number has passed the
8855 trial division stage.
8858 *) Fix for bug in CRL encoding. The validity dates weren't being handled
8862 *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
8865 *) New function BN_pseudo_rand().
8868 *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
8869 bignum version of BN_from_montgomery() with the working code from
8870 SSLeay 0.9.0 (the word based version is faster anyway), and clean up
8874 *) Avoid a race condition in s2_clnt.c (function get_server_hello) that
8875 made it impossible to use the same SSL_SESSION data structure in
8876 SSL2 clients in multiple threads.
8879 *) The return value of RAND_load_file() no longer counts bytes obtained
8880 by stat(). RAND_load_file(..., -1) is new and uses the complete file
8881 to seed the PRNG (previously an explicit byte count was required).
8882 [Ulf Möller, Bodo Möller]
8884 *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
8885 used (char *) instead of (void *) and had casts all over the place.
8888 *) Make BN_generate_prime() return NULL on error if ret!=NULL.
8891 *) Retain source code compatibility for BN_prime_checks macro:
8892 BN_is_prime(..., BN_prime_checks, ...) now uses
8893 BN_prime_checks_for_size to determine the appropriate number of
8894 Rabin-Miller iterations.
8897 *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
8898 DH_CHECK_P_NOT_SAFE_PRIME.
8899 (Check if this is true? OpenPGP calls them "strong".)
8902 *) Merge the functionality of "dh" and "gendh" programs into a new program
8903 "dhparam". The old programs are retained for now but will handle DH keys
8904 (instead of parameters) in future.
8907 *) Make the ciphers, s_server and s_client programs check the return values
8908 when a new cipher list is set.
8911 *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
8912 ciphers. Before when the 56bit ciphers were enabled the sorting was
8915 The syntax for the cipher sorting has been extended to support sorting by
8916 cipher-strength (using the strength_bits hard coded in the tables).
8917 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
8919 Fix a bug in the cipher-command parser: when supplying a cipher command
8920 string with an "undefined" symbol (neither command nor alphanumeric
8921 [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now
8922 an error is flagged.
8924 Due to the strength-sorting extension, the code of the
8925 ssl_create_cipher_list() function was completely rearranged. I hope that
8926 the readability was also increased :-)
8927 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
8929 *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1
8930 for the first serial number and places 2 in the serial number file. This
8931 avoids problems when the root CA is created with serial number zero and
8932 the first user certificate has the same issuer name and serial number
8936 *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
8937 the new code. Add documentation for this stuff.
8940 *) Changes to X509_ATTRIBUTE utilities. These have been renamed from
8941 X509_*() to X509at_*() on the grounds that they don't handle X509
8942 structures and behave in an analogous way to the X509v3 functions:
8943 they shouldn't be called directly but wrapper functions should be used
8946 So we also now have some wrapper functions that call the X509at functions
8947 when passed certificate requests. (TO DO: similar things can be done with
8948 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
8949 things. Some of these need some d2i or i2d and print functionality
8950 because they handle more complex structures.)
8953 *) Add missing #ifndefs that caused missing symbols when building libssl
8954 as a shared library without RSA. Use #ifndef NO_SSL2 instead of
8955 NO_RSA in ssl/s2*.c.
8956 [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller]
8958 *) Precautions against using the PRNG uninitialized: RAND_bytes() now
8959 has a return value which indicates the quality of the random data
8960 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
8961 error queue. New function RAND_pseudo_bytes() generates output that is
8962 guaranteed to be unique but not unpredictable. RAND_add is like
8963 RAND_seed, but takes an extra argument for an entropy estimate
8964 (RAND_seed always assumes full entropy).
8967 *) Do more iterations of Rabin-Miller probable prime test (specifically,
8968 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
8969 instead of only 2 for all lengths; see BN_prime_checks_for_size definition
8970 in crypto/bn/bn_prime.c for the complete table). This guarantees a
8971 false-positive rate of at most 2^-80 for random input.
8974 *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
8977 *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
8978 in the 0.9.5 release), this returns the chain
8979 from an X509_CTX structure with a dup of the stack and all
8980 the X509 reference counts upped: so the stack will exist
8981 after X509_CTX_cleanup() has been called. Modify pkcs12.c
8984 Also make SSL_SESSION_print() print out the verify return
8988 *) Add manpage for the pkcs12 command. Also change the default
8989 behaviour so MAC iteration counts are used unless the new
8990 -nomaciter option is used. This improves file security and
8991 only older versions of MSIE (4.0 for example) need it.
8994 *) Honor the no-xxx Configure options when creating .DEF files.
8997 *) Add PKCS#10 attributes to field table: challengePassword,
8998 unstructuredName and unstructuredAddress. These are taken from
8999 draft PKCS#9 v2.0 but are compatible with v1.2 provided no
9000 international characters are used.
9002 More changes to X509_ATTRIBUTE code: allow the setting of types
9003 based on strings. Remove the 'loc' parameter when adding
9004 attributes because these will be a SET OF encoding which is sorted
9008 *) Initial changes to the 'req' utility to allow request generation
9009 automation. This will allow an application to just generate a template
9010 file containing all the field values and have req construct the
9013 Initial support for X509_ATTRIBUTE handling. Stacks of these are
9014 used all over the place including certificate requests and PKCS#7
9015 structures. They are currently handled manually where necessary with
9016 some primitive wrappers for PKCS#7. The new functions behave in a
9017 manner analogous to the X509 extension functions: they allow
9018 attributes to be looked up by NID and added.
9020 Later something similar to the X509V3 code would be desirable to
9021 automatically handle the encoding, decoding and printing of the
9022 more complex types. The string types like challengePassword can
9023 be handled by the string table functions.
9025 Also modified the multi byte string table handling. Now there is
9026 a 'global mask' which masks out certain types. The table itself
9027 can use the flag STABLE_NO_MASK to ignore the mask setting: this
9028 is useful when for example there is only one permissible type
9029 (as in countryName) and using the mask might result in no valid
9033 *) Clean up 'Finished' handling, and add functions SSL_get_finished and
9034 SSL_get_peer_finished to allow applications to obtain the latest
9035 Finished messages sent to the peer or expected from the peer,
9036 respectively. (SSL_get_peer_finished is usually the Finished message
9037 actually received from the peer, otherwise the protocol will be aborted.)
9039 As the Finished message are message digests of the complete handshake
9040 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
9041 be used for external authentication procedures when the authentication
9042 provided by SSL/TLS is not desired or is not enough.
9045 *) Enhanced support for Alpha Linux is added. Now ./config checks if
9046 the host supports BWX extension and if Compaq C is present on the
9047 $PATH. Just exploiting of the BWX extension results in 20-30%
9048 performance kick for some algorithms, e.g. DES and RC4 to mention
9049 a couple. Compaq C in turn generates ~20% faster code for MD5 and
9053 *) Add support for MS "fast SGC". This is arguably a violation of the
9054 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
9055 weak crypto and after checking the certificate is SGC a second one
9056 with strong crypto. MS SGC stops the first handshake after receiving
9057 the server certificate message and sends a second client hello. Since
9058 a server will typically do all the time consuming operations before
9059 expecting any further messages from the client (server key exchange
9060 is the most expensive) there is little difference between the two.
9062 To get OpenSSL to support MS SGC we have to permit a second client
9063 hello message after we have sent server done. In addition we have to
9064 reset the MAC if we do get this second client hello.
9067 *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide
9068 if a DER encoded private key is RSA or DSA traditional format. Changed
9069 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
9070 format DER encoded private key. Newer code should use PKCS#8 format which
9071 has the key type encoded in the ASN1 structure. Added DER private key
9072 support to pkcs8 application.
9075 *) SSL 3/TLS 1 servers now don't request certificates when an anonymous
9076 ciphersuites has been selected (as required by the SSL 3/TLS 1
9077 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
9078 is set, we interpret this as a request to violate the specification
9079 (the worst that can happen is a handshake failure, and 'correct'
9080 behaviour would result in a handshake failure anyway).
9083 *) In SSL_CTX_add_session, take into account that there might be multiple
9084 SSL_SESSION structures with the same session ID (e.g. when two threads
9085 concurrently obtain them from an external cache).
9086 The internal cache can handle only one SSL_SESSION with a given ID,
9087 so if there's a conflict, we now throw out the old one to achieve
9091 *) Add OIDs for idea and blowfish in CBC mode. This will allow both
9092 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
9093 some routines that use cipher OIDs: some ciphers do not have OIDs
9094 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
9098 *) Simplify the trust setting structure and code. Now we just have
9099 two sequences of OIDs for trusted and rejected settings. These will
9100 typically have values the same as the extended key usage extension
9101 and any application specific purposes.
9103 The trust checking code now has a default behaviour: it will just
9104 check for an object with the same NID as the passed id. Functions can
9105 be provided to override either the default behaviour or the behaviour
9106 for a given id. SSL client, server and email already have functions
9107 in place for compatibility: they check the NID and also return "trusted"
9108 if the certificate is self signed.
9111 *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the
9112 traditional format into an EVP_PKEY structure.
9115 *) Add a password callback function PEM_cb() which either prompts for
9116 a password if usr_data is NULL or otherwise assumes it is a null
9117 terminated password. Allow passwords to be passed on command line
9118 environment or config files in a few more utilities.
9121 *) Add a bunch of DER and PEM functions to handle PKCS#8 format private
9122 keys. Add some short names for PKCS#8 PBE algorithms and allow them
9123 to be specified on the command line for the pkcs8 and pkcs12 utilities.
9124 Update documentation.
9127 *) Support for ASN1 "NULL" type. This could be handled before by using
9128 ASN1_TYPE but there wasn't any function that would try to read a NULL
9129 and produce an error if it couldn't. For compatibility we also have
9130 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
9131 don't allocate anything because they don't need to.
9134 *) Initial support for MacOS is now provided. Examine INSTALL.MacOS
9136 [Andy Polyakov, Roy Woods <roy@centicsystems.ca>]
9138 *) Rebuild of the memory allocation routines used by OpenSSL code and
9139 possibly others as well. The purpose is to make an interface that
9140 provide hooks so anyone can build a separate set of allocation and
9141 deallocation routines to be used by OpenSSL, for example memory
9142 pool implementations, or something else, which was previously hard
9143 since Malloc(), Realloc() and Free() were defined as macros having
9144 the values malloc, realloc and free, respectively (except for Win32
9145 compilations). The same is provided for memory debugging code.
9146 OpenSSL already comes with functionality to find memory leaks, but
9147 this gives people a chance to debug other memory problems.
9149 With these changes, a new set of functions and macros have appeared:
9151 CRYPTO_set_mem_debug_functions() [F]
9152 CRYPTO_get_mem_debug_functions() [F]
9153 CRYPTO_dbg_set_options() [F]
9154 CRYPTO_dbg_get_options() [F]
9155 CRYPTO_malloc_debug_init() [M]
9157 The memory debug functions are NULL by default, unless the library
9158 is compiled with CRYPTO_MDEBUG or friends is defined. If someone
9159 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
9160 gives the standard debugging functions that come with OpenSSL) or
9161 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
9162 provided by the library user) must be used. When the standard
9163 debugging functions are used, CRYPTO_dbg_set_options can be used to
9164 request additional information:
9165 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
9166 the CRYPTO_MDEBUG_xxx macro when compiling the library.
9168 Also, things like CRYPTO_set_mem_functions will always give the
9169 expected result (the new set of functions is used for allocation
9170 and deallocation) at all times, regardless of platform and compiler
9173 To finish it up, some functions that were never use in any other
9174 way than through macros have a new API and new semantic:
9177 CRYPTO_dbg_realloc()
9180 All macros of value have retained their old syntax.
9181 [Richard Levitte and Bodo Moeller]
9183 *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
9184 ordering of SMIMECapabilities wasn't in "strength order" and there
9185 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
9189 *) Some ASN1 types with illegal zero length encoding (INTEGER,
9190 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
9191 [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson]
9193 *) Merge in my S/MIME library for OpenSSL. This provides a simple
9194 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
9195 functionality to handle multipart/signed properly) and a utility
9196 called 'smime' to call all this stuff. This is based on code I
9197 originally wrote for Celo who have kindly allowed it to be
9198 included in OpenSSL.
9201 *) Add variants des_set_key_checked and des_set_key_unchecked of
9202 des_set_key (aka des_key_sched). Global variable des_check_key
9203 decides which of these is called by des_set_key; this way
9204 des_check_key behaves as it always did, but applications and
9205 the library itself, which was buggy for des_check_key == 1,
9206 have a cleaner way to pick the version they need.
9209 *) New function PKCS12_newpass() which changes the password of a
9213 *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and
9214 dynamic mix. In both cases the ids can be used as an index into the
9215 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
9216 functions so they accept a list of the field values and the
9217 application doesn't need to directly manipulate the X509_TRUST
9221 *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
9225 *) Modify the way the V3 extension code looks up extensions. This now
9226 works in a similar way to the object code: we have some "standard"
9227 extensions in a static table which is searched with OBJ_bsearch()
9228 and the application can add dynamic ones if needed. The file
9229 crypto/x509v3/ext_dat.h now has the info: this file needs to be
9230 updated whenever a new extension is added to the core code and kept
9231 in ext_nid order. There is a simple program 'tabtest.c' which checks
9232 this. New extensions are not added too often so this file can readily
9233 be maintained manually.
9235 There are two big advantages in doing things this way. The extensions
9236 can be looked up immediately and no longer need to be "added" using
9237 X509V3_add_standard_extensions(): this function now does nothing.
9238 [Side note: I get *lots* of email saying the extension code doesn't
9239 work because people forget to call this function]
9240 Also no dynamic allocation is done unless new extensions are added:
9241 so if we don't add custom extensions there is no need to call
9242 X509V3_EXT_cleanup().
9245 *) Modify enc utility's salting as follows: make salting the default. Add a
9246 magic header, so unsalted files fail gracefully instead of just decrypting
9247 to garbage. This is because not salting is a big security hole, so people
9248 should be discouraged from doing it.
9251 *) Fixes and enhancements to the 'x509' utility. It allowed a message
9252 digest to be passed on the command line but it only used this
9253 parameter when signing a certificate. Modified so all relevant
9254 operations are affected by the digest parameter including the
9255 -fingerprint and -x509toreq options. Also -x509toreq choked if a
9256 DSA key was used because it didn't fix the digest.
9259 *) Initial certificate chain verify code. Currently tests the untrusted
9260 certificates for consistency with the verify purpose (which is set
9261 when the X509_STORE_CTX structure is set up) and checks the pathlength.
9263 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
9264 this is because it will reject chains with invalid extensions whereas
9265 every previous version of OpenSSL and SSLeay made no checks at all.
9267 Trust code: checks the root CA for the relevant trust settings. Trust
9268 settings have an initial value consistent with the verify purpose: e.g.
9269 if the verify purpose is for SSL client use it expects the CA to be
9270 trusted for SSL client use. However the default value can be changed to
9271 permit custom trust settings: one example of this would be to only trust
9272 certificates from a specific "secure" set of CAs.
9274 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
9275 which should be used for version portability: especially since the
9276 verify structure is likely to change more often now.
9278 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
9279 to set them. If not set then assume SSL clients will verify SSL servers
9282 Two new options to the verify program: -untrusted allows a set of
9283 untrusted certificates to be passed in and -purpose which sets the
9284 intended purpose of the certificate. If a purpose is set then the
9285 new chain verify code is used to check extension consistency.
9288 *) Support for the authority information access extension.
9291 *) Modify RSA and DSA PEM read routines to transparently handle
9292 PKCS#8 format private keys. New *_PUBKEY_* functions that handle
9293 public keys in a format compatible with certificate
9294 SubjectPublicKeyInfo structures. Unfortunately there were already
9295 functions called *_PublicKey_* which used various odd formats so
9296 these are retained for compatibility: however the DSA variants were
9297 never in a public release so they have been deleted. Changed dsa/rsa
9298 utilities to handle the new format: note no releases ever handled public
9299 keys so we should be OK.
9301 The primary motivation for this change is to avoid the same fiasco
9302 that dogs private keys: there are several incompatible private key
9303 formats some of which are standard and some OpenSSL specific and
9304 require various evil hacks to allow partial transparent handling and
9305 even then it doesn't work with DER formats. Given the option anything
9306 other than PKCS#8 should be dumped: but the other formats have to
9307 stay in the name of compatibility.
9309 With public keys and the benefit of hindsight one standard format
9310 is used which works with EVP_PKEY, RSA or DSA structures: though
9311 it clearly returns an error if you try to read the wrong kind of key.
9313 Added a -pubkey option to the 'x509' utility to output the public key.
9314 Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*()
9315 (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add
9316 EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*())
9317 that do the same as the EVP_PKEY_assign_*() except they up the
9318 reference count of the added key (they don't "swallow" the
9322 *) Fixes to crypto/x509/by_file.c the code to read in certificates and
9323 CRLs would fail if the file contained no certificates or no CRLs:
9324 added a new function to read in both types and return the number
9325 read: this means that if none are read it will be an error. The
9326 DER versions of the certificate and CRL reader would always fail
9327 because it isn't possible to mix certificates and CRLs in DER format
9328 without choking one or the other routine. Changed this to just read
9329 a certificate: this is the best we can do. Also modified the code
9330 in apps/verify.c to take notice of return codes: it was previously
9331 attempting to read in certificates from NULL pointers and ignoring
9332 any errors: this is one reason why the cert and CRL reader seemed
9333 to work. It doesn't check return codes from the default certificate
9334 routines: these may well fail if the certificates aren't installed.
9337 *) Code to support otherName option in GeneralName.
9340 *) First update to verify code. Change the verify utility
9341 so it warns if it is passed a self signed certificate:
9342 for consistency with the normal behaviour. X509_verify
9343 has been modified to it will now verify a self signed
9344 certificate if *exactly* the same certificate appears
9345 in the store: it was previously impossible to trust a
9346 single self signed certificate. This means that:
9347 openssl verify ss.pem
9348 now gives a warning about a self signed certificate but
9349 openssl verify -CAfile ss.pem ss.pem
9353 *) For servers, store verify_result in SSL_SESSION data structure
9354 (and add it to external session representation).
9355 This is needed when client certificate verifications fails,
9356 but an application-provided verification callback (set by
9357 SSL_CTX_set_cert_verify_callback) allows accepting the session
9358 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
9359 but returns 1): When the session is reused, we have to set
9360 ssl->verify_result to the appropriate error code to avoid
9362 [Bodo Moeller, problem pointed out by Lutz Jaenicke]
9364 *) Fix a bug in the new PKCS#7 code: it didn't consider the
9365 case in PKCS7_dataInit() where the signed PKCS7 structure
9366 didn't contain any existing data because it was being created.
9367 [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson]
9369 *) Add a salt to the key derivation routines in enc.c. This
9370 forms the first 8 bytes of the encrypted file. Also add a
9371 -S option to allow a salt to be input on the command line.
9374 *) New function X509_cmp(). Oddly enough there wasn't a function
9375 to compare two certificates. We do this by working out the SHA1
9376 hash and comparing that. X509_cmp() will be needed by the trust
9380 *) SSL_get1_session() is like SSL_get_session(), but increments
9381 the reference count in the SSL_SESSION returned.
9382 [Geoff Thorpe <geoff@eu.c2.net>]
9384 *) Fix for 'req': it was adding a null to request attributes.
9385 Also change the X509_LOOKUP and X509_INFO code to handle
9386 certificate auxiliary information.
9389 *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document
9393 *) Add the possibility to add extra information to the memory leak
9394 detecting output, to form tracebacks, showing from where each
9395 allocation was originated: CRYPTO_push_info("constant string") adds
9396 the string plus current file name and line number to a per-thread
9397 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
9398 is like calling CYRPTO_pop_info() until the stack is empty.
9399 Also updated memory leak detection code to be multi-thread-safe.
9402 *) Add options -text and -noout to pkcs7 utility and delete the
9403 encryption options which never did anything. Update docs.
9406 *) Add options to some of the utilities to allow the pass phrase
9407 to be included on either the command line (not recommended on
9408 OSes like Unix) or read from the environment. Update the
9409 manpages and fix a few bugs.
9412 *) Add a few manpages for some of the openssl commands.
9415 *) Fix the -revoke option in ca. It was freeing up memory twice,
9416 leaking and not finding already revoked certificates.
9419 *) Extensive changes to support certificate auxiliary information.
9420 This involves the use of X509_CERT_AUX structure and X509_AUX
9421 functions. An X509_AUX function such as PEM_read_X509_AUX()
9422 can still read in a certificate file in the usual way but it
9423 will also read in any additional "auxiliary information". By
9424 doing things this way a fair degree of compatibility can be
9425 retained: existing certificates can have this information added
9426 using the new 'x509' options.
9428 Current auxiliary information includes an "alias" and some trust
9429 settings. The trust settings will ultimately be used in enhanced
9430 certificate chain verification routines: currently a certificate
9431 can only be trusted if it is self signed and then it is trusted
9435 *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD).
9436 The problem was that one of the replacement routines had not been working
9437 since SSLeay releases. For now the offending routine has been replaced
9438 with non-optimised assembler. Even so, this now gives around 95%
9439 performance improvement for 1024 bit RSA signs.
9442 *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2
9443 handling. Most clients have the effective key size in bits equal to
9444 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
9445 A few however don't do this and instead use the size of the decrypted key
9446 to determine the RC2 key length and the AlgorithmIdentifier to determine
9447 the effective key length. In this case the effective key length can still
9448 be 40 bits but the key length can be 168 bits for example. This is fixed
9449 by manually forcing an RC2 key into the EVP_PKEY structure because the
9450 EVP code can't currently handle unusual RC2 key sizes: it always assumes
9451 the key length and effective key length are equal.
9454 *) Add a bunch of functions that should simplify the creation of
9455 X509_NAME structures. Now you should be able to do:
9456 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
9457 and have it automatically work out the correct field type and fill in
9458 the structures. The more adventurous can try:
9459 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
9460 and it will (hopefully) work out the correct multibyte encoding.
9463 *) Change the 'req' utility to use the new field handling and multibyte
9464 copy routines. Before the DN field creation was handled in an ad hoc
9465 way in req, ca, and x509 which was rather broken and didn't support
9466 BMPStrings or UTF8Strings. Since some software doesn't implement
9467 BMPStrings or UTF8Strings yet, they can be enabled using the config file
9468 using the dirstring_type option. See the new comment in the default
9469 openssl.cnf for more info.
9472 *) Make crypto/rand/md_rand.c more robust:
9473 - Assure unique random numbers after fork().
9474 - Make sure that concurrent threads access the global counter and
9475 md serializably so that we never lose entropy in them
9476 or use exactly the same state in multiple threads.
9477 Access to the large state is not always serializable because
9478 the additional locking could be a performance killer, and
9479 md should be large enough anyway.
9482 *) New file apps/app_rand.c with commonly needed functionality
9483 for handling the random seed file.
9485 Use the random seed file in some applications that previously did not:
9487 dsaparam -genkey (which also ignored its '-rand' option),
9490 x509 (when signing).
9491 Except on systems with /dev/urandom, it is crucial to have a random
9492 seed file at least for key creation, DSA signing, and for DH exchanges;
9493 for RSA signatures we could do without one.
9495 gendh and gendsa (unlike genrsa) used to read only the first byte
9496 of each file listed in the '-rand' option. The function as previously
9497 found in genrsa is now in app_rand.c and is used by all programs
9498 that support '-rand'.
9501 *) In RAND_write_file, use mode 0600 for creating files;
9502 don't just chmod when it may be too late.
9505 *) Report an error from X509_STORE_load_locations
9506 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
9509 *) New function ASN1_mbstring_copy() this copies a string in either
9510 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
9511 into an ASN1_STRING type. A mask of permissible types is passed
9512 and it chooses the "minimal" type to use or an error if not type
9516 *) Add function equivalents to the various macros in asn1.h. The old
9517 macros are retained with an M_ prefix. Code inside the library can
9518 use the M_ macros. External code (including the openssl utility)
9519 should *NOT* in order to be "shared library friendly".
9522 *) Add various functions that can check a certificate's extensions
9523 to see if it usable for various purposes such as SSL client,
9524 server or S/MIME and CAs of these types. This is currently
9525 VERY EXPERIMENTAL but will ultimately be used for certificate chain
9526 verification. Also added a -purpose flag to x509 utility to
9527 print out all the purposes.
9530 *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated
9534 *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search
9535 for, obtain and decode and extension and obtain its critical flag.
9536 This allows all the necessary extension code to be handled in a
9537 single function call.
9540 *) RC4 tune-up featuring 30-40% performance improvement on most RISC
9541 platforms. See crypto/rc4/rc4_enc.c for further details.
9544 *) New -noout option to asn1parse. This causes no output to be produced
9545 its main use is when combined with -strparse and -out to extract data
9546 from a file (which may not be in ASN.1 format).
9549 *) Fix for pkcs12 program. It was hashing an invalid certificate pointer
9550 when producing the local key id.
9551 [Richard Levitte <levitte@stacken.kth.se>]
9553 *) New option -dhparam in s_server. This allows a DH parameter file to be
9554 stated explicitly. If it is not stated then it tries the first server
9555 certificate file. The previous behaviour hard coded the filename
9559 *) Add -pubin and -pubout options to the rsa and dsa commands. These allow
9560 a public key to be input or output. For example:
9561 openssl rsa -in key.pem -pubout -out pubkey.pem
9562 Also added necessary DSA public key functions to handle this.
9565 *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
9566 in the message. This was handled by allowing
9567 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
9568 [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>]
9570 *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
9571 to the end of the strings whereas this didn't. This would cause problems
9572 if strings read with d2i_ASN1_bytes() were later modified.
9573 [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>]
9575 *) Fix for base64 decode bug. When a base64 bio reads only one line of
9576 data and it contains EOF it will end up returning an error. This is
9577 caused by input 46 bytes long. The cause is due to the way base64
9578 BIOs find the start of base64 encoded data. They do this by trying a
9579 trial decode on each line until they find one that works. When they
9580 do a flag is set and it starts again knowing it can pass all the
9581 data directly through the decoder. Unfortunately it doesn't reset
9582 the context it uses. This means that if EOF is reached an attempt
9583 is made to pass two EOFs through the context and this causes the
9584 resulting error. This can also cause other problems as well. As is
9585 usual with these problems it takes *ages* to find and the fix is
9586 trivial: move one line.
9587 [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ]
9589 *) Ugly workaround to get s_client and s_server working under Windows. The
9590 old code wouldn't work because it needed to select() on sockets and the
9591 tty (for keypresses and to see if data could be written). Win32 only
9592 supports select() on sockets so we select() with a 1s timeout on the
9593 sockets and then see if any characters are waiting to be read, if none
9594 are present then we retry, we also assume we can always write data to
9595 the tty. This isn't nice because the code then blocks until we've
9596 received a complete line of data and it is effectively polling the
9597 keyboard at 1s intervals: however it's quite a bit better than not
9598 working at all :-) A dedicated Windows application might handle this
9599 with an event loop for example.
9602 *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
9603 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
9604 will be called when RSA_sign() and RSA_verify() are used. This is useful
9605 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
9606 For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
9607 should *not* be used: RSA_sign() and RSA_verify() must be used instead.
9608 This necessitated the support of an extra signature type NID_md5_sha1
9609 for SSL signatures and modifications to the SSL library to use it instead
9610 of calling RSA_public_decrypt() and RSA_private_encrypt().
9613 *) Add new -verify -CAfile and -CApath options to the crl program, these
9614 will lookup a CRL issuers certificate and verify the signature in a
9615 similar way to the verify program. Tidy up the crl program so it
9616 no longer accesses structures directly. Make the ASN1 CRL parsing a bit
9617 less strict. It will now permit CRL extensions even if it is not
9618 a V2 CRL: this will allow it to tolerate some broken CRLs.
9621 *) Initialize all non-automatic variables each time one of the openssl
9622 sub-programs is started (this is necessary as they may be started
9623 multiple times from the "OpenSSL>" prompt).
9624 [Lennart Bang, Bodo Moeller]
9626 *) Preliminary compilation option RSA_NULL which disables RSA crypto without
9627 removing all other RSA functionality (this is what NO_RSA does). This
9628 is so (for example) those in the US can disable those operations covered
9629 by the RSA patent while allowing storage and parsing of RSA keys and RSA
9633 *) Non-copying interface to BIO pairs.
9634 (still largely untested)
9637 *) New function ANS1_tag2str() to convert an ASN1 tag to a descriptive
9638 ASCII string. This was handled independently in various places before.
9641 *) New functions UTF8_getc() and UTF8_putc() that parse and generate
9642 UTF8 strings a character at a time.
9645 *) Use client_version from client hello to select the protocol
9646 (s23_srvr.c) and for RSA client key exchange verification
9647 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
9650 *) Add various utility functions to handle SPKACs, these were previously
9651 handled by poking round in the structure internals. Added new function
9652 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
9653 print, verify and generate SPKACs. Based on an original idea from
9654 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
9657 *) RIPEMD160 is operational on all platforms and is back in 'make test'.
9660 *) Allow the config file extension section to be overwritten on the
9661 command line. Based on an original idea from Massimiliano Pala
9662 <madwolf@comune.modena.it>. The new option is called -extensions
9663 and can be applied to ca, req and x509. Also -reqexts to override
9664 the request extensions in req and -crlexts to override the crl extensions
9668 *) Add new feature to the SPKAC handling in ca. Now you can include
9669 the same field multiple times by preceding it by "XXXX." for example:
9672 this is the same syntax as used in the req config file.
9675 *) Allow certificate extensions to be added to certificate requests. These
9676 are specified in a 'req_extensions' option of the req section of the
9677 config file. They can be printed out with the -text option to req but
9678 are otherwise ignored at present.
9681 *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
9682 data read consists of only the final block it would not decrypted because
9683 EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
9684 A misplaced 'break' also meant the decrypted final block might not be
9685 copied until the next read.
9688 *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
9689 a few extra parameters to the DH structure: these will be useful if
9690 for example we want the value of 'q' or implement X9.42 DH.
9693 *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and
9694 provides hooks that allow the default DSA functions or functions on a
9695 "per key" basis to be replaced. This allows hardware acceleration and
9696 hardware key storage to be handled without major modification to the
9697 library. Also added low level modexp hooks and CRYPTO_EX structure and
9698 associated functions.
9701 *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
9702 as "read only": it can't be written to and the buffer it points to will
9703 not be freed. Reading from a read only BIO is much more efficient than
9704 a normal memory BIO. This was added because there are several times when
9705 an area of memory needs to be read from a BIO. The previous method was
9706 to create a memory BIO and write the data to it, this results in two
9707 copies of the data and an O(n^2) reading algorithm. There is a new
9708 function BIO_new_mem_buf() which creates a read only memory BIO from
9709 an area of memory. Also modified the PKCS#7 routines to use read only
9713 *) Bugfix: ssl23_get_client_hello did not work properly when called in
9714 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
9715 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
9716 but a retry condition occured while trying to read the rest.
9719 *) The PKCS7_ENC_CONTENT_new() function was setting the content type as
9720 NID_pkcs7_encrypted by default: this was wrong since this should almost
9721 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
9722 the encrypted data type: this is a more sensible place to put it and it
9723 allows the PKCS#12 code to be tidied up that duplicated this
9727 *) Changed obj_dat.pl script so it takes its input and output files on
9728 the command line. This should avoid shell escape redirection problems
9732 *) Initial support for certificate extension requests, these are included
9733 in things like Xenroll certificate requests. Included functions to allow
9734 extensions to be obtained and added.
9737 *) -crlf option to s_client and s_server for sending newlines as
9738 CRLF (as required by many protocols).
9741 Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
9743 *) Install libRSAglue.a when OpenSSL is built with RSAref.
9744 [Ralf S. Engelschall]
9746 *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency.
9747 [Andrija Antonijevic <TheAntony2@bigfoot.com>]
9749 *) Fix -startdate and -enddate (which was missing) arguments to 'ca'
9753 *) New function DSA_dup_DH, which duplicates DSA parameters/keys as
9754 DH parameters/keys (q is lost during that conversion, but the resulting
9755 DH parameters contain its length).
9757 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
9758 much faster than DH_generate_parameters (which creates parameters
9759 where p = 2*q + 1), and also the smaller q makes DH computations
9760 much more efficient (160-bit exponentiation instead of 1024-bit
9761 exponentiation); so this provides a convenient way to support DHE
9762 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
9763 utter importance to use
9764 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
9766 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
9767 when such DH parameters are used, because otherwise small subgroup
9768 attacks may become possible!
9771 *) Avoid memory leak in i2d_DHparams.
9774 *) Allow the -k option to be used more than once in the enc program:
9775 this allows the same encrypted message to be read by multiple recipients.
9778 *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
9779 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
9780 it will always use the numerical form of the OID, even if it has a short
9784 *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
9785 method only got called if p,q,dmp1,dmq1,iqmp components were present,
9786 otherwise bn_mod_exp was called. In the case of hardware keys for example
9787 no private key components need be present and it might store extra data
9788 in the RSA structure, which cannot be accessed from bn_mod_exp.
9789 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
9790 private key operations.
9793 *) Added support for SPARC Linux.
9796 *) pem_password_cb function type incompatibly changed from
9797 typedef int pem_password_cb(char *buf, int size, int rwflag);
9799 ....(char *buf, int size, int rwflag, void *userdata);
9800 so that applications can pass data to their callbacks:
9801 The PEM[_ASN1]_{read,write}... functions and macros now take an
9802 additional void * argument, which is just handed through whenever
9803 the password callback is called.
9804 [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller]
9806 New function SSL_CTX_set_default_passwd_cb_userdata.
9808 Compatibility note: As many C implementations push function arguments
9809 onto the stack in reverse order, the new library version is likely to
9810 interoperate with programs that have been compiled with the old
9811 pem_password_cb definition (PEM_whatever takes some data that
9812 happens to be on the stack as its last argument, and the callback
9813 just ignores this garbage); but there is no guarantee whatsoever that
9816 *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
9817 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
9818 problems not only on Windows, but also on some Unix platforms.
9819 To avoid problematic command lines, these definitions are now in an
9820 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
9821 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
9824 *) MIPS III/IV assembler module is reimplemented.
9827 *) More DES library cleanups: remove references to srand/rand and
9828 delete an unused file.
9831 *) Add support for the the free Netwide assembler (NASM) under Win32,
9832 since not many people have MASM (ml) and it can be hard to obtain.
9833 This is currently experimental but it seems to work OK and pass all
9834 the tests. Check out INSTALL.W32 for info.
9837 *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
9838 without temporary keys kept an extra copy of the server key,
9839 and connections with temporary keys did not free everything in case
9843 *) New function RSA_check_key and new openssl rsa option -check
9844 for verifying the consistency of RSA keys.
9845 [Ulf Moeller, Bodo Moeller]
9847 *) Various changes to make Win32 compile work:
9848 1. Casts to avoid "loss of data" warnings in p5_crpt2.c
9849 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
9850 comparison" warnings.
9851 3. Add sk_<TYPE>_sort to DEF file generator and do make update.
9854 *) Add a debugging option to PKCS#5 v2 key generation function: when
9855 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
9856 derived keys are printed to stderr.
9859 *) Copy the flags in ASN1_STRING_dup().
9860 [Roman E. Pavlov <pre@mo.msk.ru>]
9862 *) The x509 application mishandled signing requests containing DSA
9863 keys when the signing key was also DSA and the parameters didn't match.
9865 It was supposed to omit the parameters when they matched the signing key:
9866 the verifying software was then supposed to automatically use the CA's
9867 parameters if they were absent from the end user certificate.
9869 Omitting parameters is no longer recommended. The test was also
9870 the wrong way round! This was probably due to unusual behaviour in
9871 EVP_cmp_parameters() which returns 1 if the parameters match.
9872 This meant that parameters were omitted when they *didn't* match and
9873 the certificate was useless. Certificates signed with 'ca' didn't have
9875 [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>]
9877 *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
9878 The interface is as follows:
9879 Applications can use
9880 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
9881 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
9882 "off" is now the default.
9883 The library internally uses
9884 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
9885 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
9886 to disable memory-checking temporarily.
9888 Some inconsistent states that previously were possible (and were
9889 even the default) are now avoided.
9891 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
9892 with each memory chunk allocated; this is occasionally more helpful
9893 than just having a counter.
9895 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
9897 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
9901 *) Introduce "mode" for SSL structures (with defaults in SSL_CTX),
9902 which largely parallels "options", but is for changing API behaviour,
9903 whereas "options" are about protocol behaviour.
9904 Initial "mode" flags are:
9906 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when
9907 a single record has been written.
9908 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write
9909 retries use the same buffer location.
9910 (But all of the contents must be
9914 *) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options
9917 *) Fix problems with no-hmac etc.
9918 [Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>]
9920 *) New functions RSA_get_default_method(), RSA_set_method() and
9921 RSA_get_method(). These allows replacement of RSA_METHODs without having
9922 to mess around with the internals of an RSA structure.
9925 *) Fix memory leaks in DSA_do_sign and DSA_is_prime.
9926 Also really enable memory leak checks in openssl.c and in some
9928 [Chad C. Mulligan, Bodo Moeller]
9930 *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
9931 up the length of negative integers. This has now been simplified to just
9932 store the length when it is first determined and use it later, rather
9933 than trying to keep track of where data is copied and updating it to
9935 [Steve Henson, reported by Brien Wheeler
9936 <bwheeler@authentica-security.com>]
9938 *) Add a new function PKCS7_signatureVerify. This allows the verification
9939 of a PKCS#7 signature but with the signing certificate passed to the
9940 function itself. This contrasts with PKCS7_dataVerify which assumes the
9941 certificate is present in the PKCS#7 structure. This isn't always the
9942 case: certificates can be omitted from a PKCS#7 structure and be
9943 distributed by "out of band" means (such as a certificate database).
9946 *) Complete the PEM_* macros with DECLARE_PEM versions to replace the
9947 function prototypes in pem.h, also change util/mkdef.pl to add the
9948 necessary function names.
9951 *) mk1mf.pl (used by Windows builds) did not properly read the
9952 options set by Configure in the top level Makefile, and Configure
9953 was not even able to write more than one option correctly.
9954 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
9957 *) New functions CONF_load_bio() and CONF_load_fp() to allow a config
9958 file to be loaded from a BIO or FILE pointer. The BIO version will
9959 for example allow memory BIOs to contain config info.
9962 *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
9963 Whoever hopes to achieve shared-library compatibility across versions
9964 must use this, not the compile-time macro.
9965 (Exercise 0.9.4: Which is the minimum library version required by
9967 Note: All this applies only to multi-threaded programs, others don't
9971 *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests
9972 through a BIO pair triggered the default case, i.e.
9973 SSLerr(...,SSL_R_UNKNOWN_STATE).
9976 *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
9977 can use the SSL library even if none of the specific BIOs is
9981 *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
9982 for the encoded length.
9983 [Jeon KyoungHo <khjeon@sds.samsung.co.kr>]
9985 *) Add initial documentation of the X509V3 functions.
9988 *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and
9989 PEM_write_bio_PKCS8PrivateKey() that are equivalent to
9990 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
9991 secure PKCS#8 private key format with a high iteration count.
9994 *) Fix determination of Perl interpreter: A perl or perl5
9995 _directory_ in $PATH was also accepted as the interpreter.
9996 [Ralf S. Engelschall]
9998 *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking
9999 wrong with it but it was very old and did things like calling
10000 PEM_ASN1_read() directly and used MD5 for the hash not to mention some
10001 unusual formatting.
10004 *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed
10005 to use the new extension code.
10008 *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
10009 with macros. This should make it easier to change their form, add extra
10010 arguments etc. Fix a few PEM prototypes which didn't have cipher as a
10014 *) Add to configuration table a new entry that can specify an alternative
10015 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
10016 according to Mark Crispin <MRC@Panda.COM>.
10020 *) DES CBC did not update the IV. Weird.
10023 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
10024 Changing the behaviour of the former might break existing programs --
10025 where IV updating is needed, des_ncbc_encrypt can be used.
10028 *) When bntest is run from "make test" it drives bc to check its
10029 calculations, as well as internally checking them. If an internal check
10030 fails, it needs to cause bc to give a non-zero result or make test carries
10031 on without noticing the failure. Fixed.
10034 *) DES library cleanups.
10037 *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
10038 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
10039 ciphers. NOTE: although the key derivation function has been verified
10040 against some published test vectors it has not been extensively tested
10041 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
10045 *) Instead of "mkdir -p", which is not fully portable, use new
10046 Perl script "util/mkdir-p.pl".
10049 *) Rewrite the way password based encryption (PBE) is handled. It used to
10050 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
10051 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
10052 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
10053 the 'parameter' field of the AlgorithmIdentifier is passed to the
10054 underlying key generation function so it must do its own ASN1 parsing.
10055 This has also changed the EVP_PBE_CipherInit() function which now has a
10056 'parameter' argument instead of literal salt and iteration count values
10057 and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
10060 *) Support for PKCS#5 v1.5 compatible password based encryption algorithms
10061 and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
10062 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
10063 KEY" because this clashed with PKCS#8 unencrypted string. Since this
10064 value was just used as a "magic string" and not used directly its
10065 value doesn't matter.
10068 *) Introduce some semblance of const correctness to BN. Shame C doesn't
10072 *) "linux-sparc64" configuration (ultrapenguin).
10073 [Ray Miller <ray.miller@oucs.ox.ac.uk>]
10074 "linux-sparc" configuration.
10075 [Christian Forster <fo@hawo.stw.uni-erlangen.de>]
10077 *) config now generates no-xxx options for missing ciphers.
10080 *) Support the EBCDIC character set (work in progress).
10081 File ebcdic.c not yet included because it has a different license.
10082 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
10084 *) Support BS2000/OSD-POSIX.
10085 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
10087 *) Make callbacks for key generation use void * instead of char *.
10090 *) Make S/MIME samples compile (not yet tested).
10093 *) Additional typesafe stacks.
10096 *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
10100 Changes between 0.9.3 and 0.9.3a [29 May 1999]
10102 *) New configuration variant "sco5-gcc".
10104 *) Updated some demos.
10105 [Sean O Riordain, Wade Scholine]
10107 *) Add missing BIO_free at exit of pkcs12 application.
10110 *) Fix memory leak in conf.c.
10113 *) Updates for Win32 to assembler version of MD5.
10116 *) Set #! path to perl in apps/der_chop to where we found it
10117 instead of using a fixed path.
10120 *) SHA library changes for irix64-mips4-cc.
10123 *) Improvements for VMS support.
10127 Changes between 0.9.2b and 0.9.3 [24 May 1999]
10129 *) Bignum library bug fix. IRIX 6 passes "make test" now!
10130 This also avoids the problems with SC4.2 and unpatched SC5.
10131 [Andy Polyakov <appro@fy.chalmers.se>]
10133 *) New functions sk_num, sk_value and sk_set to replace the previous macros.
10134 These are required because of the typesafe stack would otherwise break
10135 existing code. If old code used a structure member which used to be STACK
10136 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
10137 sk_num or sk_value it would produce an error because the num, data members
10138 are not present in STACK_OF. Now it just produces a warning. sk_set
10139 replaces the old method of assigning a value to sk_value
10140 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
10141 that does this will no longer work (and should use sk_set instead) but
10142 this could be regarded as a "questionable" behaviour anyway.
10145 *) Fix most of the other PKCS#7 bugs. The "experimental" code can now
10146 correctly handle encrypted S/MIME data.
10149 *) Change type of various DES function arguments from des_cblock
10150 (which means, in function argument declarations, pointer to char)
10151 to des_cblock * (meaning pointer to array with 8 char elements),
10152 which allows the compiler to do more typechecking; it was like
10153 that back in SSLeay, but with lots of ugly casts.
10155 Introduce new type const_des_cblock.
10158 *) Reorganise the PKCS#7 library and get rid of some of the more obvious
10159 problems: find RecipientInfo structure that matches recipient certificate
10160 and initialise the ASN1 structures properly based on passed cipher.
10163 *) Belatedly make the BN tests actually check the results.
10166 *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
10167 to and from BNs: it was completely broken. New compilation option
10168 NEG_PUBKEY_BUG to allow for some broken certificates that encode public
10169 key elements as negative integers.
10172 *) Reorganize and speed up MD5.
10173 [Andy Polyakov <appro@fy.chalmers.se>]
10176 [Richard Levitte <richard@levitte.org>]
10178 *) New option -out to asn1parse to allow the parsed structure to be
10179 output to a file. This is most useful when combined with the -strparse
10180 option to examine the output of things like OCTET STRINGS.
10183 *) Make SSL library a little more fool-proof by not requiring any longer
10184 that SSL_set_{accept,connect}_state be called before
10185 SSL_{accept,connect} may be used (SSL_set_..._state is omitted
10186 in many applications because usually everything *appeared* to work as
10187 intended anyway -- now it really works as intended).
10190 *) Move openssl.cnf out of lib/.
10193 *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall
10194 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
10195 -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+
10196 [Ralf S. Engelschall]
10198 *) Various fixes to the EVP and PKCS#7 code. It may now be able to
10199 handle PKCS#7 enveloped data properly.
10200 [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve]
10202 *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
10203 copying pointers. The cert_st handling is changed by this in
10204 various ways (and thus what used to be known as ctx->default_cert
10205 is now called ctx->cert, since we don't resort to s->ctx->[default_]cert
10206 any longer when s->cert does not give us what we need).
10207 ssl_cert_instantiate becomes obsolete by this change.
10208 As soon as we've got the new code right (possibly it already is?),
10209 we have solved a couple of bugs of the earlier code where s->cert
10210 was used as if it could not have been shared with other SSL structures.
10212 Note that using the SSL API in certain dirty ways now will result
10213 in different behaviour than observed with earlier library versions:
10214 Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx)
10215 does not influence s as it used to.
10217 In order to clean up things more thoroughly, inside SSL_SESSION
10218 we don't use CERT any longer, but a new structure SESS_CERT
10219 that holds per-session data (if available); currently, this is
10220 the peer's certificate chain and, for clients, the server's certificate
10221 and temporary key. CERT holds only those values that can have
10222 meaningful defaults in an SSL_CTX.
10225 *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
10226 from the internal representation. Various PKCS#7 fixes: remove some
10227 evil casts and set the enc_dig_alg field properly based on the signing
10231 *) Allow PKCS#12 password to be set from the command line or the
10232 environment. Let 'ca' get its config file name from the environment
10233 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
10237 *) Allow certificate policies extension to use an IA5STRING for the
10238 organization field. This is contrary to the PKIX definition but
10239 VeriSign uses it and IE5 only recognises this form. Document 'x509'
10243 *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
10244 without disallowing inline assembler and the like for non-pedantic builds.
10247 *) Support Borland C++ builder.
10248 [Janez Jere <jj@void.si>, modified by Ulf Möller]
10250 *) Support Mingw32.
10253 *) SHA-1 cleanups and performance enhancements.
10254 [Andy Polyakov <appro@fy.chalmers.se>]
10256 *) Sparc v8plus assembler for the bignum library.
10257 [Andy Polyakov <appro@fy.chalmers.se>]
10259 *) Accept any -xxx and +xxx compiler options in Configure.
10262 *) Update HPUX configuration.
10265 *) Add missing sk_<type>_unshift() function to safestack.h
10266 [Ralf S. Engelschall]
10268 *) New function SSL_CTX_use_certificate_chain_file that sets the
10269 "extra_cert"s in addition to the certificate. (This makes sense
10270 only for "PEM" format files, as chains as a whole are not
10274 *) Support verify_depth from the SSL API.
10275 x509_vfy.c had what can be considered an off-by-one-error:
10276 Its depth (which was not part of the external interface)
10277 was actually counting the number of certificates in a chain;
10278 now it really counts the depth.
10281 *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
10282 instead of X509err, which often resulted in confusing error
10283 messages since the error codes are not globally unique
10284 (e.g. an alleged error in ssl3_accept when a certificate
10285 didn't match the private key).
10287 *) New function SSL_CTX_set_session_id_context that allows to set a default
10288 value (so that you don't need SSL_set_session_id_context for each
10289 connection using the SSL_CTX).
10292 *) OAEP decoding bug fix.
10295 *) Support INSTALL_PREFIX for package builders, as proposed by
10299 *) New Configure options "threads" and "no-threads". For systems
10300 where the proper compiler options are known (currently Solaris
10301 and Linux), "threads" is the default.
10304 *) New script util/mklink.pl as a faster substitute for util/mklink.sh.
10307 *) Install various scripts to $(OPENSSLDIR)/misc, not to
10308 $(INSTALLTOP)/bin -- they shouldn't clutter directories
10309 such as /usr/local/bin.
10312 *) "make linux-shared" to build shared libraries.
10313 [Niels Poppe <niels@netbox.org>]
10315 *) New Configure option no-<cipher> (rsa, idea, rc5, ...).
10318 *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
10319 extension adding in x509 utility.
10322 *) Remove NOPROTO sections and error code comments.
10325 *) Partial rewrite of the DEF file generator to now parse the ANSI
10329 *) New Configure options --prefix=DIR and --openssldir=DIR.
10332 *) Complete rewrite of the error code script(s). It is all now handled
10333 by one script at the top level which handles error code gathering,
10334 header rewriting and C source file generation. It should be much better
10335 than the old method: it now uses a modified version of Ulf's parser to
10336 read the ANSI prototypes in all header files (thus the old K&R definitions
10337 aren't needed for error creation any more) and do a better job of
10338 translating function codes into names. The old 'ASN1 error code imbedded
10339 in a comment' is no longer necessary and it doesn't use .err files which
10340 have now been deleted. Also the error code call doesn't have to appear all
10341 on one line (which resulted in some large lines...).
10344 *) Change #include filenames from <foo.h> to <openssl/foo.h>.
10347 *) Change behaviour of ssl2_read when facing length-0 packets: Don't return
10348 0 (which usually indicates a closed connection), but continue reading.
10351 *) Fix some race conditions.
10354 *) Add support for CRL distribution points extension. Add Certificate
10355 Policies and CRL distribution points documentation.
10358 *) Move the autogenerated header file parts to crypto/opensslconf.h.
10361 *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
10362 8 of keying material. Merlin has also confirmed interop with this fix
10363 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
10364 [Merlin Hughes <merlin@baltimore.ie>]
10366 *) Fix lots of warnings.
10367 [Richard Levitte <levitte@stacken.kth.se>]
10369 *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
10370 the directory spec didn't end with a LIST_SEPARATOR_CHAR.
10371 [Richard Levitte <levitte@stacken.kth.se>]
10373 *) Fix problems with sizeof(long) == 8.
10374 [Andy Polyakov <appro@fy.chalmers.se>]
10376 *) Change functions to ANSI C.
10379 *) Fix typos in error codes.
10380 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller]
10382 *) Remove defunct assembler files from Configure.
10385 *) SPARC v8 assembler BIGNUM implementation.
10386 [Andy Polyakov <appro@fy.chalmers.se>]
10388 *) Support for Certificate Policies extension: both print and set.
10389 Various additions to support the r2i method this uses.
10392 *) A lot of constification, and fix a bug in X509_NAME_oneline() that could
10393 return a const string when you are expecting an allocated buffer.
10396 *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
10397 types DirectoryString and DisplayText.
10400 *) Add code to allow r2i extensions to access the configuration database,
10401 add an LHASH database driver and add several ctx helper functions.
10404 *) Fix an evil bug in bn_expand2() which caused various BN functions to
10405 fail when they extended the size of a BIGNUM.
10408 *) Various utility functions to handle SXNet extension. Modify mkdef.pl to
10409 support typesafe stack.
10412 *) Fix typo in SSL_[gs]et_options().
10413 [Nils Frostberg <nils@medcom.se>]
10415 *) Delete various functions and files that belonged to the (now obsolete)
10416 old X509V3 handling code.
10419 *) New Configure option "rsaref".
10422 *) Don't auto-generate pem.h.
10425 *) Introduce type-safe ASN.1 SETs.
10428 *) Convert various additional casted stacks to type-safe STACK_OF() variants.
10429 [Ben Laurie, Ralf S. Engelschall, Steve Henson]
10431 *) Introduce type-safe STACKs. This will almost certainly break lots of code
10432 that links with OpenSSL (well at least cause lots of warnings), but fear
10433 not: the conversion is trivial, and it eliminates loads of evil casts. A
10434 few STACKed things have been converted already. Feel free to convert more.
10435 In the fullness of time, I'll do away with the STACK type altogether.
10438 *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate
10439 specified in <certfile> by updating the entry in the index.txt file.
10440 This way one no longer has to edit the index.txt file manually for
10441 revoking a certificate. The -revoke option does the gory details now.
10442 [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall]
10444 *) Fix `openssl crl -noout -text' combination where `-noout' killed the
10445 `-text' option at all and this way the `-noout -text' combination was
10446 inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'.
10447 [Ralf S. Engelschall]
10449 *) Make sure a corresponding plain text error message exists for the
10450 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
10451 verify callback function determined that a certificate was revoked.
10452 [Ralf S. Engelschall]
10454 *) Bugfix: In test/testenc, don't test "openssl <cipher>" for
10455 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test
10456 all available cipers including rc5, which was forgotten until now.
10457 In order to let the testing shell script know which algorithms
10458 are available, a new (up to now undocumented) command
10459 "openssl list-cipher-commands" is used.
10462 *) Bugfix: s_client occasionally would sleep in select() when
10463 it should have checked SSL_pending() first.
10466 *) New functions DSA_do_sign and DSA_do_verify to provide access to
10467 the raw DSA values prior to ASN.1 encoding.
10470 *) Tweaks to Configure
10471 [Niels Poppe <niels@netbox.org>]
10473 *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
10477 *) New variables $(RANLIB) and $(PERL) in the Makefiles.
10480 *) New config option to avoid instructions that are illegal on the 80386.
10481 The default code is faster, but requires at least a 486.
10484 *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
10485 SSL2_SERVER_VERSION (not used at all) macros, which are now the
10486 same as SSL2_VERSION anyway.
10489 *) New "-showcerts" option for s_client.
10492 *) Still more PKCS#12 integration. Add pkcs12 application to openssl
10493 application. Various cleanups and fixes.
10496 *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
10497 modify error routines to work internally. Add error codes and PBE init
10498 to library startup routines.
10501 *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and
10502 packing functions to asn1 and evp. Changed function names and error
10503 codes along the way.
10506 *) PKCS12 integration: and so it begins... First of several patches to
10507 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
10508 objects to objects.h
10511 *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1
10512 and display support for Thawte strong extranet extension.
10515 *) Add LinuxPPC support.
10516 [Jeff Dubrule <igor@pobox.org>]
10518 *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
10519 bn_div_words in alpha.s.
10520 [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie]
10522 *) Make sure the RSA OAEP test is skipped under -DRSAref because
10523 OAEP isn't supported when OpenSSL is built with RSAref.
10524 [Ulf Moeller <ulf@fitug.de>]
10526 *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
10527 so they no longer are missing under -DNOPROTO.
10528 [Soren S. Jorvang <soren@t.dk>]
10531 Changes between 0.9.1c and 0.9.2b [22 Mar 1999]
10533 *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
10534 doesn't work when the session is reused. Coming soon!
10537 *) Fix a security hole, that allows sessions to be reused in the wrong
10538 context thus bypassing client cert protection! All software that uses
10539 client certs and session caches in multiple contexts NEEDS PATCHING to
10540 allow session reuse! A fuller solution is in the works.
10541 [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)]
10543 *) Some more source tree cleanups (removed obsolete files
10544 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
10545 permission on "config" script to be executable) and a fix for the INSTALL
10547 [Ulf Moeller <ulf@fitug.de>]
10549 *) Remove some legacy and erroneous uses of malloc, free instead of
10551 [Lennart Bang <lob@netstream.se>, with minor changes by Steve]
10553 *) Make rsa_oaep_test return non-zero on error.
10554 [Ulf Moeller <ulf@fitug.de>]
10556 *) Add support for native Solaris shared libraries. Configure
10557 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
10558 if someone would make that last step automatic.
10559 [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>]
10561 *) ctx_size was not built with the right compiler during "make links". Fixed.
10564 *) Change the meaning of 'ALL' in the cipher list. It now means "everything
10565 except NULL ciphers". This means the default cipher list will no longer
10566 enable NULL ciphers. They need to be specifically enabled e.g. with
10567 the string "DEFAULT:eNULL".
10570 *) Fix to RSA private encryption routines: if p < q then it would
10571 occasionally produce an invalid result. This will only happen with
10572 externally generated keys because OpenSSL (and SSLeay) ensure p > q.
10575 *) Be less restrictive and allow also `perl util/perlpath.pl
10576 /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin',
10577 because this way one can also use an interpreter named `perl5' (which is
10578 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
10579 installed as `perl').
10580 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
10582 *) Let util/clean-depend.pl work also with older Perl 5.00x versions.
10583 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
10585 *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
10586 advapi32.lib to Win32 build and change the pem test comparison
10587 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
10588 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
10589 and crypto/des/ede_cbcm_enc.c.
10592 *) DES quad checksum was broken on big-endian architectures. Fixed.
10595 *) Comment out two functions in bio.h that aren't implemented. Fix up the
10596 Win32 test batch file so it (might) work again. The Win32 test batch file
10597 is horrible: I feel ill....
10600 *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
10601 in e_os.h. Audit of header files to check ANSI and non ANSI
10602 sections: 10 functions were absent from non ANSI section and not exported
10603 from Windows DLLs. Fixed up libeay.num for new functions.
10606 *) Make `openssl version' output lines consistent.
10607 [Ralf S. Engelschall]
10609 *) Fix Win32 symbol export lists for BIO functions: Added
10610 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
10611 to ms/libeay{16,32}.def.
10612 [Ralf S. Engelschall]
10614 *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
10615 fine under Unix and passes some trivial tests I've now added. But the
10616 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
10617 added to make sure no one expects that this stuff really works in the
10618 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources
10619 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
10621 [Ralf S. Engelschall]
10623 *) Fix the generation of two part addresses in perl.
10624 [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie]
10626 *) Add config entry for Linux on MIPS.
10627 [John Tobey <jtobey@channel1.com>]
10629 *) Make links whenever Configure is run, unless we are on Windoze.
10632 *) Permit extensions to be added to CRLs using crl_section in openssl.cnf.
10633 Currently only issuerAltName and AuthorityKeyIdentifier make any sense
10637 *) Add a useful kludge to allow package maintainers to specify compiler and
10638 other platforms details on the command line without having to patch the
10639 Configure script everytime: One now can use ``perl Configure
10640 <id>:<details>'', i.e. platform ids are allowed to have details appended
10641 to them (separated by colons). This is treated as there would be a static
10642 pre-configured entry in Configure's %table under key <id> with value
10643 <details> and ``perl Configure <id>'' is called. So, when you want to
10644 perform a quick test-compile under FreeBSD 3.1 with pgcc and without
10645 assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"''
10646 now, which overrides the FreeBSD-elf entry on-the-fly.
10647 [Ralf S. Engelschall]
10649 *) Disable new TLS1 ciphersuites by default: they aren't official yet.
10652 *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
10653 on the `perl Configure ...' command line. This way one can compile
10654 OpenSSL libraries with Position Independent Code (PIC) which is needed
10655 for linking it into DSOs.
10656 [Ralf S. Engelschall]
10658 *) Remarkably, export ciphers were totally broken and no-one had noticed!
10662 *) Cleaned up the LICENSE document: The official contact for any license
10663 questions now is the OpenSSL core team under openssl-core@openssl.org.
10664 And add a paragraph about the dual-license situation to make sure people
10665 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
10666 to the OpenSSL toolkit.
10667 [Ralf S. Engelschall]
10669 *) General source tree makefile cleanups: Made `making xxx in yyy...'
10670 display consistent in the source tree and replaced `/bin/rm' by `rm'.
10671 Additionally cleaned up the `make links' target: Remove unnecessary
10672 semicolons, subsequent redundant removes, inline point.sh into mklink.sh
10673 to speed processing and no longer clutter the display with confusing
10674 stuff. Instead only the actually done links are displayed.
10675 [Ralf S. Engelschall]
10677 *) Permit null encryption ciphersuites, used for authentication only. It used
10678 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
10679 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
10683 *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
10684 signed attributes when verifying signatures (this would break them),
10685 the detached data encoding was wrong and public keys obtained using
10686 X509_get_pubkey() weren't freed.
10689 *) Add text documentation for the BUFFER functions. Also added a work around
10690 to a Win95 console bug. This was triggered by the password read stuff: the
10691 last character typed gets carried over to the next fread(). If you were
10692 generating a new cert request using 'req' for example then the last
10693 character of the passphrase would be CR which would then enter the first
10697 *) Added the new `Includes OpenSSL Cryptography Software' button as
10698 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
10699 button and can be used by applications based on OpenSSL to show the
10700 relationship to the OpenSSL project.
10701 [Ralf S. Engelschall]
10703 *) Remove confusing variables in function signatures in files
10704 ssl/ssl_lib.c and ssl/ssl.h.
10705 [Lennart Bong <lob@kulthea.stacken.kth.se>]
10707 *) Don't install bss_file.c under PREFIX/include/
10708 [Lennart Bong <lob@kulthea.stacken.kth.se>]
10710 *) Get the Win32 compile working again. Modify mkdef.pl so it can handle
10711 functions that return function pointers and has support for NT specific
10712 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
10713 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
10714 unsigned to signed types: this was killing the Win32 compile.
10717 *) Add new certificate file to stack functions,
10718 SSL_add_dir_cert_subjects_to_stack() and
10719 SSL_add_file_cert_subjects_to_stack(). These largely supplant
10720 SSL_load_client_CA_file(), and can be used to add multiple certs easily
10721 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
10722 This means that Apache-SSL and similar packages don't have to mess around
10723 to add as many CAs as they want to the preferred list.
10726 *) Experiment with doxygen documentation. Currently only partially applied to
10728 See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with
10729 openssl.doxy as the configuration file.
10732 *) Get rid of remaining C++-style comments which strict C compilers hate.
10733 [Ralf S. Engelschall, pointed out by Carlos Amengual]
10735 *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
10736 compiled in by default: it has problems with large keys.
10739 *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
10740 DH private keys and/or callback functions which directly correspond to
10741 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
10742 is needed for applications which have to configure certificates on a
10743 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
10745 For the RSA certificate situation is makes no difference, but
10746 for the DSA certificate situation this fixes the "no shared cipher"
10747 problem where the OpenSSL cipher selection procedure failed because the
10748 temporary keys were not overtaken from the context and the API provided
10749 no way to reconfigure them.
10750 The new functions now let applications reconfigure the stuff and they
10751 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
10752 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new
10753 non-public-API function ssl_cert_instantiate() is used as a helper
10754 function and also to reduce code redundancy inside ssl_rsa.c.
10755 [Ralf S. Engelschall]
10757 *) Move s_server -dcert and -dkey options out of the undocumented feature
10758 area because they are useful for the DSA situation and should be
10759 recognized by the users.
10760 [Ralf S. Engelschall]
10762 *) Fix the cipher decision scheme for export ciphers: the export bits are
10763 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
10764 SSL_EXP_MASK. So, the original variable has to be used instead of the
10765 already masked variable.
10766 [Richard Levitte <levitte@stacken.kth.se>]
10768 *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c
10769 [Richard Levitte <levitte@stacken.kth.se>]
10771 *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
10772 from `int' to `unsigned int' because it's a length and initialized by
10773 EVP_DigestFinal() which expects an `unsigned int *'.
10774 [Richard Levitte <levitte@stacken.kth.se>]
10776 *) Don't hard-code path to Perl interpreter on shebang line of Configure
10777 script. Instead use the usual Shell->Perl transition trick.
10778 [Ralf S. Engelschall]
10780 *) Make `openssl x509 -noout -modulus' functional also for DSA certificates
10781 (in addition to RSA certificates) to match the behaviour of `openssl dsa
10782 -noout -modulus' as it's already the case for `openssl rsa -noout
10783 -modulus'. For RSA the -modulus is the real "modulus" while for DSA
10784 currently the public key is printed (a decision which was already done by
10785 `openssl dsa -modulus' in the past) which serves a similar purpose.
10786 Additionally the NO_RSA no longer completely removes the whole -modulus
10787 option; it now only avoids using the RSA stuff. Same applies to NO_DSA
10789 [Ralf S. Engelschall]
10791 *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
10792 BIO. See the source (crypto/evp/bio_ok.c) for more info.
10793 [Arne Ansper <arne@ats.cyber.ee>]
10795 *) Dump the old yucky req code that tried (and failed) to allow raw OIDs
10796 to be added. Now both 'req' and 'ca' can use new objects defined in the
10800 *) Add cool BIO that does syslog (or event log on NT).
10801 [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie]
10803 *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
10804 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
10805 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
10806 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
10809 *) Add preliminary config info for new extension code.
10812 *) Make RSA_NO_PADDING really use no padding.
10813 [Ulf Moeller <ulf@fitug.de>]
10815 *) Generate errors when private/public key check is done.
10818 *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
10819 for some CRL extensions and new objects added.
10822 *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private
10823 key usage extension and fuller support for authority key id.
10826 *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
10827 padding method for RSA, which is recommended for new applications in PKCS
10828 #1 v2.0 (RFC 2437, October 1998).
10829 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
10830 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
10831 against Bleichbacher's attack on RSA.
10832 [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
10835 *) Updates to the new SSL compression code
10836 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
10838 *) Fix so that the version number in the master secret, when passed
10839 via RSA, checks that if TLS was proposed, but we roll back to SSLv3
10840 (because the server will not accept higher), that the version number
10841 is 0x03,0x01, not 0x03,0x00
10842 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
10844 *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
10845 leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
10846 in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
10849 *) Support for RAW extensions where an arbitrary extension can be
10850 created by including its DER encoding. See apps/openssl.cnf for
10854 *) Make sure latest Perl versions don't interpret some generated C array
10855 code as Perl array code in the crypto/err/err_genc.pl script.
10856 [Lars Weber <3weber@informatik.uni-hamburg.de>]
10858 *) Modify ms/do_ms.bat to not generate assembly language makefiles since
10859 not many people have the assembler. Various Win32 compilation fixes and
10860 update to the INSTALL.W32 file with (hopefully) more accurate Win32
10861 build instructions.
10864 *) Modify configure script 'Configure' to automatically create crypto/date.h
10865 file under Win32 and also build pem.h from pem.org. New script
10866 util/mkfiles.pl to create the MINFO file on environments that can't do a
10867 'make files': perl util/mkfiles.pl >MINFO should work.
10870 *) Major rework of DES function declarations, in the pursuit of correctness
10871 and purity. As a result, many evil casts evaporated, and some weirdness,
10872 too. You may find this causes warnings in your code. Zapping your evil
10873 casts will probably fix them. Mostly.
10876 *) Fix for a typo in asn1.h. Bug fix to object creation script
10877 obj_dat.pl. It considered a zero in an object definition to mean
10878 "end of object": none of the objects in objects.h have any zeros
10879 so it wasn't spotted.
10880 [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>]
10882 *) Add support for Triple DES Cipher Block Chaining with Output Feedback
10883 Masking (CBCM). In the absence of test vectors, the best I have been able
10884 to do is check that the decrypt undoes the encrypt, so far. Send me test
10885 vectors if you have them.
10888 *) Correct calculation of key length for export ciphers (too much space was
10889 allocated for null ciphers). This has not been tested!
10892 *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage
10893 message is now correct (it understands "crypto" and "ssl" on its
10894 command line). There is also now an "update" option. This will update
10895 the util/ssleay.num and util/libeay.num files with any new functions.
10897 perl util/mkdef.pl crypto ssl update
10898 it will update them.
10901 *) Overhauled the Perl interface (perl/*):
10902 - ported BN stuff to OpenSSL's different BN library
10903 - made the perl/ source tree CVS-aware
10904 - renamed the package from SSLeay to OpenSSL (the files still contain
10905 their history because I've copied them in the repository)
10906 - removed obsolete files (the test scripts will be replaced
10907 by better Test::Harness variants in the future)
10908 [Ralf S. Engelschall]
10910 *) First cut for a very conservative source tree cleanup:
10911 1. merge various obsolete readme texts into doc/ssleay.txt
10912 where we collect the old documents and readme texts.
10913 2. remove the first part of files where I'm already sure that we no
10914 longer need them because of three reasons: either they are just temporary
10915 files which were left by Eric or they are preserved original files where
10916 I've verified that the diff is also available in the CVS via "cvs diff
10917 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
10918 the crypto/md/ stuff).
10919 [Ralf S. Engelschall]
10921 *) More extension code. Incomplete support for subject and issuer alt
10922 name, issuer and authority key id. Change the i2v function parameters
10923 and add an extra 'crl' parameter in the X509V3_CTX structure: guess
10924 what that's for :-) Fix to ASN1 macro which messed up
10925 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
10928 *) Preliminary support for ENUMERATED type. This is largely copied from the
10932 *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
10933 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
10935 *) Make sure `make rehash' target really finds the `openssl' program.
10936 [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
10938 *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
10939 like to hear about it if this slows down other processors.
10942 *) Add CygWin32 platform information to Configure script.
10943 [Alan Batie <batie@aahz.jf.intel.com>]
10945 *) Fixed ms/32all.bat script: `no_asm' -> `no-asm'
10946 [Rainer W. Gerling <gerling@mpg-gv.mpg.de>]
10948 *) New program nseq to manipulate netscape certificate sequences
10951 *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
10955 *) Fixes to BN code. Previously the default was to define BN_RECURSION
10956 but the BN code had some problems that would cause failures when
10957 doing certificate verification and some other functions.
10958 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
10960 *) Add ASN1 and PEM code to support netscape certificate sequences.
10963 *) Add ASN1 and PEM code to support netscape certificate sequences.
10966 *) Add several PKIX and private extended key usage OIDs.
10969 *) Modify the 'ca' program to handle the new extension code. Modify
10970 openssl.cnf for new extension format, add comments.
10973 *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
10974 and add a sample to openssl.cnf so req -x509 now adds appropriate
10978 *) Continued X509 V3 changes. Add to other makefiles, integrate with the
10979 error code, add initial support to X509_print() and x509 application.
10982 *) Takes a deep breath and start adding X509 V3 extension support code. Add
10983 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
10984 stuff is currently isolated and isn't even compiled yet.
10987 *) Continuing patches for GeneralizedTime. Fix up certificate and CRL
10988 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
10989 Removed the versions check from X509 routines when loading extensions:
10990 this allows certain broken certificates that don't set the version
10991 properly to be processed.
10994 *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
10995 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
10996 can still be regenerated with "make depend".
10999 *) Spelling mistake in C version of CAST-128.
11000 [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>]
11002 *) Changes to the error generation code. The perl script err-code.pl
11003 now reads in the old error codes and retains the old numbers, only
11004 adding new ones if necessary. It also only changes the .err files if new
11005 codes are added. The makefiles have been modified to only insert errors
11006 when needed (to avoid needlessly modifying header files). This is done
11007 by only inserting errors if the .err file is newer than the auto generated
11008 C file. To rebuild all the error codes from scratch (the old behaviour)
11009 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
11010 or delete all the .err files.
11013 *) CAST-128 was incorrectly implemented for short keys. The C version has
11014 been fixed, but is untested. The assembler versions are also fixed, but
11015 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
11016 to regenerate it if needed.
11017 [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
11018 Hagino <itojun@kame.net>]
11020 *) File was opened incorrectly in randfile.c.
11021 [Ulf Möller <ulf@fitug.de>]
11023 *) Beginning of support for GeneralizedTime. d2i, i2d, check and print
11024 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
11025 GeneralizedTime. ASN1_TIME is the proper type used in certificates et
11026 al: it's just almost always a UTCTime. Note this patch adds new error
11027 codes so do a "make errors" if there are problems.
11030 *) Correct Linux 1 recognition in config.
11031 [Ulf Möller <ulf@fitug.de>]
11033 *) Remove pointless MD5 hash when using DSA keys in ca.
11034 [Anonymous <nobody@replay.com>]
11036 *) Generate an error if given an empty string as a cert directory. Also
11037 generate an error if handed NULL (previously returned 0 to indicate an
11038 error, but didn't set one).
11039 [Ben Laurie, reported by Anonymous <nobody@replay.com>]
11041 *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
11044 *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
11045 parameters. This was causing a warning which killed off the Win32 compile.
11048 *) Remove C++ style comments from crypto/bn/bn_local.h.
11049 [Neil Costigan <neil.costigan@celocom.com>]
11051 *) The function OBJ_txt2nid was broken. It was supposed to return a nid
11052 based on a text string, looking up short and long names and finally
11053 "dot" format. The "dot" format stuff didn't work. Added new function
11054 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
11055 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
11056 OID is not part of the table.
11059 *) Add prototypes to X509 lookup/verify methods, fixing a bug in
11060 X509_LOOKUP_by_alias().
11063 *) Sort openssl functions by name.
11066 *) Get the gendsa program working (hopefully) and add it to app list. Remove
11067 encryption from sample DSA keys (in case anyone is interested the password
11071 *) Make _all_ *_free functions accept a NULL pointer.
11072 [Frans Heymans <fheymans@isaserver.be>]
11074 *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use
11076 [Anonymous <nobody@replay.com>]
11078 *) s_server should send the CAfile as acceptable CAs, not its own cert.
11079 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
11081 *) Don't blow it for numeric -newkey arguments to apps/req.
11082 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
11084 *) Temp key "for export" tests were wrong in s3_srvr.c.
11085 [Anonymous <nobody@replay.com>]
11087 *) Add prototype for temp key callback functions
11088 SSL_CTX_set_tmp_{rsa,dh}_callback().
11091 *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
11092 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
11095 *) X509_name_add_entry() freed the wrong thing after an error.
11096 [Arne Ansper <arne@ats.cyber.ee>]
11098 *) rsa_eay.c would attempt to free a NULL context.
11099 [Arne Ansper <arne@ats.cyber.ee>]
11101 *) BIO_s_socket() had a broken should_retry() on Windoze.
11102 [Arne Ansper <arne@ats.cyber.ee>]
11104 *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
11105 [Arne Ansper <arne@ats.cyber.ee>]
11107 *) Make sure the already existing X509_STORE->depth variable is initialized
11108 in X509_STORE_new(), but document the fact that this variable is still
11109 unused in the certificate verification process.
11110 [Ralf S. Engelschall]
11112 *) Fix the various library and apps files to free up pkeys obtained from
11113 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
11116 *) Fix reference counting in X509_PUBKEY_get(). This makes
11117 demos/maurice/example2.c work, amongst others, probably.
11118 [Steve Henson and Ben Laurie]
11120 *) First cut of a cleanup for apps/. First the `ssleay' program is now named
11121 `openssl' and second, the shortcut symlinks for the `openssl <command>'
11122 are no longer created. This way we have a single and consistent command
11123 line interface `openssl <command>', similar to `cvs <command>'.
11124 [Ralf S. Engelschall, Paul Sutton and Ben Laurie]
11126 *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
11127 BIT STRING wrapper always have zero unused bits.
11130 *) Add CA.pl, perl version of CA.sh, add extended key usage OID.
11133 *) Make the top-level INSTALL documentation easier to understand.
11136 *) Makefiles updated to exit if an error occurs in a sub-directory
11137 make (including if user presses ^C) [Paul Sutton]
11139 *) Make Montgomery context stuff explicit in RSA data structure.
11142 *) Fix build order of pem and err to allow for generated pem.h.
11145 *) Fix renumbering bug in X509_NAME_delete_entry().
11148 *) Enhanced the err-ins.pl script so it makes the error library number
11149 global and can add a library name. This is needed for external ASN1 and
11150 other error libraries.
11153 *) Fixed sk_insert which never worked properly.
11156 *) Fix ASN1 macros so they can handle indefinite length constructed
11157 EXPLICIT tags. Some non standard certificates use these: they can now
11161 *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
11162 into a single doc/ssleay.txt bundle. This way the information is still
11163 preserved but no longer messes up this directory. Now it's new room for
11164 the new set of documentation files.
11165 [Ralf S. Engelschall]
11167 *) SETs were incorrectly DER encoded. This was a major pain, because they
11168 shared code with SEQUENCEs, which aren't coded the same. This means that
11169 almost everything to do with SETs or SEQUENCEs has either changed name or
11170 number of arguments.
11171 [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>]
11173 *) Fix test data to work with the above.
11176 *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
11177 was already fixed by Eric for 0.9.1 it seems.
11178 [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>]
11180 *) Autodetect FreeBSD3.
11183 *) Fix various bugs in Configure. This affects the following platforms:
11187 unixware-2.0-pentium
11191 *) Eliminate generated files from CVS. Reorder tests to regenerate files
11192 before they are needed.
11195 *) Generate Makefile.ssl from Makefile.org (to keep CVS happy).
11199 Changes between 0.9.1b and 0.9.1c [23-Dec-1998]
11201 *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
11202 changed SSLeay to OpenSSL in version strings.
11203 [Ralf S. Engelschall]
11205 *) Some fixups to the top-level documents.
11208 *) Fixed the nasty bug where rsaref.h was not found under compile-time
11209 because the symlink to include/ was missing.
11210 [Ralf S. Engelschall]
11212 *) Incorporated the popular no-RSA/DSA-only patches
11213 which allow to compile a RSA-free SSLeay.
11214 [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall]
11216 *) Fixed nasty rehash problem under `make -f Makefile.ssl links'
11217 when "ssleay" is still not found.
11218 [Ralf S. Engelschall]
11220 *) Added more platforms to Configure: Cray T3E, HPUX 11,
11221 [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>]
11223 *) Updated the README file.
11224 [Ralf S. Engelschall]
11226 *) Added various .cvsignore files in the CVS repository subdirs
11227 to make a "cvs update" really silent.
11228 [Ralf S. Engelschall]
11230 *) Recompiled the error-definition header files and added
11231 missing symbols to the Win32 linker tables.
11232 [Ralf S. Engelschall]
11234 *) Cleaned up the top-level documents;
11235 o new files: CHANGES and LICENSE
11236 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
11237 o merged COPYRIGHT into LICENSE
11238 o removed obsolete TODO file
11239 o renamed MICROSOFT to INSTALL.W32
11240 [Ralf S. Engelschall]
11242 *) Removed dummy files from the 0.9.1b source tree:
11243 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
11244 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
11245 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
11246 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
11247 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
11248 [Ralf S. Engelschall]
11250 *) Added various platform portability fixes.
11253 *) The Genesis of the OpenSSL rpject:
11254 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
11255 Young and Tim J. Hudson created while they were working for C2Net until
11257 [The OpenSSL Project]
11260 Changes between 0.9.0b and 0.9.1b [not released]
11262 *) Updated a few CA certificates under certs/
11265 *) Changed some BIGNUM api stuff.
11268 *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
11269 DGUX x86, Linux Alpha, etc.
11272 *) New COMP library [crypto/comp/] for SSL Record Layer Compression:
11273 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
11277 *) Add -strparse option to asn1pars program which parses nested
11279 [Dr Stephen Henson <shenson@bigfoot.com>]
11281 *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
11284 *) DSA fix for "ca" program.
11287 *) Added "-genkey" option to "dsaparam" program.
11290 *) Added RIPE MD160 (rmd160) message digest.
11293 *) Added -a (all) option to "ssleay version" command.
11296 *) Added PLATFORM define which is the id given to Configure.
11299 *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
11302 *) Extended the ASN.1 parser routines.
11305 *) Extended BIO routines to support REUSEADDR, seek, tell, etc.
11308 *) Added a BN_CTX to the BN library.
11311 *) Fixed the weak key values in DES library
11314 *) Changed API in EVP library for cipher aliases.
11317 *) Added support for RC2/64bit cipher.
11320 *) Converted the lhash library to the crypto/mem.c functions.
11323 *) Added more recognized ASN.1 object ids.
11326 *) Added more RSA padding checks for SSL/TLS.
11329 *) Added BIO proxy/filter functionality.
11332 *) Added extra_certs to SSL_CTX which can be used
11333 send extra CA certificates to the client in the CA cert chain sending
11334 process. It can be configured with SSL_CTX_add_extra_chain_cert().
11337 *) Now Fortezza is denied in the authentication phase because
11338 this is key exchange mechanism is not supported by SSLeay at all.
11341 *) Additional PKCS1 checks.
11344 *) Support the string "TLSv1" for all TLS v1 ciphers.
11347 *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
11348 ex_data index of the SSL context in the X509_STORE_CTX ex_data.
11351 *) Fixed a few memory leaks.
11354 *) Fixed various code and comment typos.
11357 *) A minor bug in ssl/s3_clnt.c where there would always be 4 0
11358 bytes sent in the client random.
11359 [Edward Bishop <ebishop@spyglass.com>]