5 Changes between 1.0.2 and 1.1.0 [xx XXX xxxx]
7 *) State machine rewrite. The state machine code has been significantly
8 refactored in order to remove much duplication of code and solve issues
9 with the old code (see ssl/statem/README for further details). This change
10 does have some associated API changes. Notably the SSL_state() function
11 has been removed and replaced by SSL_get_state which now returns an
12 "OSSL_HANDSHAKE_STATE" instead of an int. SSL_set_state() has been removed
13 altogether. The previous handshake states defined in ssl.h and ssl3.h have
17 *) All instances of the string "ssleay" in the public API were replaced
18 with OpenSSL (case-matching; e.g., OPENSSL_VERSION for #define's)
19 Some error codes related to internal RSA_eay API's were renamed.
22 *) The demo files in crypto/threads were moved to demo/threads.
25 *) Removed obsolete engines: 4758cca, aep, atalla, cswift, nuron and sureware.
28 *) New ASN.1 embed macro.
30 New ASN.1 macro ASN1_EMBED. This is the same as ASN1_SIMPLE except the
31 structure is not allocated: it is part of the parent. That is instead of
39 This reduces memory fragmentation and make it impossible to accidentally
40 set a mandatory field to NULL.
42 This currently only works for some fields specifically a SEQUENCE, CHOICE,
43 or ASN1_STRING type which is part of a parent SEQUENCE. Since it is
44 equivalent to ASN1_SIMPLE it cannot be tagged, OPTIONAL, SET OF or
48 *) Remove EVP_CHECK_DES_KEY, a compile-time option that never compiled.
51 *) Removed DES and RC4 ciphersuites from DEFAULT. Also removed RC2 although
52 in 1.0.2 EXPORT was already removed and the only RC2 ciphersuite is also
53 an EXPORT one. COMPLEMENTOFDEFAULT has been updated accordingly to add
54 DES and RC4 ciphersuites.
57 *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
58 This changes the decoding behaviour for some invalid messages,
59 though the change is mostly in the more lenient direction, and
60 legacy behaviour is preserved as much as possible.
62 *) Fix no-stdio build.
63 [ David Woodhouse <David.Woodhouse@intel.com> and also
64 Ivan Nestlerode <ivan.nestlerode@sonos.com> ]
66 *) New testing framework
67 The testing framework has been largely rewritten and is now using
68 perl and the perl modules Test::Harness and an extended variant of
69 Test::More called OpenSSL::Test to do its work. All test scripts in
70 test/ have been rewritten into test recipes, and all direct calls to
71 executables in test/Makefile have become individual recipes using the
72 simplified testing OpenSSL::Test::Simple.
74 For documentation on our testing modules, do:
76 perldoc test/testlib/OpenSSL/Test/Simple.pm
77 perldoc test/testlib/OpenSSL/Test.pm
81 *) In DSA_generate_parameters_ex, if the provided seed is too short,
83 [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>]
85 *) Rewrite PSK to support ECDHE_PSK, DHE_PSK and RSA_PSK. Add ciphersuites
86 from RFC4279, RFC4785, RFC5487, RFC5489.
88 Thanks to Christian J. Dietrich and Giuseppe D'Angelo for the
89 original RSA_PSK patch.
92 *) Dropped support for the SSL3_FLAGS_DELAY_CLIENT_FINISHED flag. This SSLeay
93 era flag was never set throughout the codebase (only read). Also removed
94 SSL3_FLAGS_POP_BUFFER which was only used if
95 SSL3_FLAGS_DELAY_CLIENT_FINISHED was also set.
98 *) Changed the default name options in the "ca", "crl", "req" and "x509"
99 to be "oneline" instead of "compat".
102 *) Remove SSL_OP_TLS_BLOCK_PADDING_BUG. This is SSLeay legacy, we're
103 not aware of clients that still exhibit this bug, and the workaround
104 hasn't been working properly for a while.
107 *) The return type of BIO_number_read() and BIO_number_written() as well as
108 the corresponding num_read and num_write members in the BIO structure has
109 changed from unsigned long to uint64_t. On platforms where an unsigned
110 long is 32 bits (e.g. Windows) these counters could overflow if >4Gb is
114 *) Given the pervasive nature of TLS extensions it is inadvisable to run
115 OpenSSL without support for them. It also means that maintaining
116 the OPENSSL_NO_TLSEXT option within the code is very invasive (and probably
117 not well tested). Therefore the OPENSSL_NO_TLSEXT option has been removed.
120 *) Removed support for the two export grade static DH ciphersuites
121 EXP-DH-RSA-DES-CBC-SHA and EXP-DH-DSS-DES-CBC-SHA. These two ciphersuites
122 were newly added (along with a number of other static DH ciphersuites) to
123 1.0.2. However the two export ones have *never* worked since they were
124 introduced. It seems strange in any case to be adding new export
125 ciphersuites, and given "logjam" it also does not seem correct to fix them.
128 *) Version negotiation has been rewritten. In particular SSLv23_method(),
129 SSLv23_client_method() and SSLv23_server_method() have been deprecated,
130 and turned into macros which simply call the new preferred function names
131 TLS_method(), TLS_client_method() and TLS_server_method(). All new code
132 should use the new names instead. Also as part of this change the ssl23.h
133 header file has been removed.
136 *) Support for Kerberos ciphersuites in TLS (RFC2712) has been removed. This
137 code and the associated standard is no longer considered fit-for-purpose.
140 *) RT2547 was closed. When generating a private key, try to make the
141 output file readable only by the owner. This behavior change might
142 be noticeable when interacting with other software.
144 *) Added HTTP GET support to the ocsp command.
147 *) RAND_pseudo_bytes has been deprecated. Users should use RAND_bytes instead.
150 *) Added support for TLS extended master secret from
151 draft-ietf-tls-session-hash-03.txt. Thanks for Alfredo Pironti for an
152 initial patch which was a great help during development.
155 *) All libssl internal structures have been removed from the public header
156 files, and the OPENSSL_NO_SSL_INTERN option has been removed (since it is
157 now redundant). Users should not attempt to access internal structures
158 directly. Instead they should use the provided API functions.
161 *) config has been changed so that by default OPENSSL_NO_DEPRECATED is used.
162 Access to deprecated functions can be re-enabled by running config with
163 "enable-deprecated". In addition applications wishing to use deprecated
164 functions must define OPENSSL_USE_DEPRECATED. Note that this new behaviour
165 will, by default, disable some transitive includes that previously existed
166 in the header files (e.g. ec.h will no longer, by default, include bn.h)
169 *) Added support for OCB mode. OpenSSL has been granted a patent license
170 compatible with the OpenSSL license for use of OCB. Details are available
171 at https://www.openssl.org/docs/misc/OCB-patent-grant-OpenSSL.pdf. Support
172 for OCB can be removed by calling config with no-ocb.
175 *) SSLv2 support has been removed. It still supports receiving a SSLv2
176 compatible client hello.
179 *) Increased the minimal RSA keysize from 256 to 512 bits [Rich Salz],
180 done while fixing the error code for the key-too-small case.
181 [Annie Yousar <a.yousar@informatik.hu-berlin.de>]
183 *) CA.sh has been removmed; use CA.pl instead.
186 *) Removed old DES API.
189 *) Remove various unsupported platforms:
195 Sinix/ReliantUNIX RM400
200 16-bit platforms such as WIN16
203 *) Clean up OPENSSL_NO_xxx #define's
204 Use setbuf() and remove OPENSSL_NO_SETVBUF_IONBF
205 Rename OPENSSL_SYSNAME_xxx to OPENSSL_SYS_xxx
206 OPENSSL_NO_EC{DH,DSA} merged into OPENSSL_NO_EC
207 OPENSSL_NO_RIPEMD160, OPENSSL_NO_RIPEMD merged into OPENSSL_NO_RMD160
208 OPENSSL_NO_FP_API merged into OPENSSL_NO_STDIO
209 Remove OPENSSL_NO_BIO OPENSSL_NO_BUFFER OPENSSL_NO_CHAIN_VERIFY
210 OPENSSL_NO_EVP OPENSSL_NO_FIPS_ERR OPENSSL_NO_HASH_COMP
211 OPENSSL_NO_LHASH OPENSSL_NO_OBJECT OPENSSL_NO_SPEED OPENSSL_NO_STACK
212 OPENSSL_NO_X509 OPENSSL_NO_X509_VERIFY
213 Remove MS_STATIC; it's a relic from platforms <32 bits.
216 *) Cleaned up dead code
217 Remove all but one '#ifdef undef' which is to be looked at.
220 *) Clean up calling of xxx_free routines.
221 Just like free(), fix most of the xxx_free routines to accept
222 NULL. Remove the non-null checks from callers. Save much code.
225 *) Add secure heap for storage of private keys (when possible).
226 Add BIO_s_secmem(), CBIGNUM, etc.
227 Contributed by Akamai Technologies under our Corporate CLA.
230 *) Experimental support for a new, fast, unbiased prime candidate generator,
231 bn_probable_prime_dh_coprime(). Not currently used by any prime generator.
232 [Felix Laurie von Massenbach <felix@erbridge.co.uk>]
234 *) New output format NSS in the sess_id command line tool. This allows
235 exporting the session id and the master key in NSS keylog format.
236 [Martin Kaiser <martin@kaiser.cx>]
238 *) Harmonize version and its documentation. -f flag is used to display
240 [mancha <mancha1@zoho.com>]
242 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
243 in i2d_ECPrivateKey. Thanks to Ted Unangst for feedback on this issue.
244 [mancha <mancha1@zoho.com>]
246 *) Fix some double frees. These are not thought to be exploitable.
247 [mancha <mancha1@zoho.com>]
249 *) A missing bounds check in the handling of the TLS heartbeat extension
250 can be used to reveal up to 64k of memory to a connected client or
253 Thanks for Neel Mehta of Google Security for discovering this bug and to
254 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
255 preparing the fix (CVE-2014-0160)
256 [Adam Langley, Bodo Moeller]
258 *) Fix for the attack described in the paper "Recovering OpenSSL
259 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
260 by Yuval Yarom and Naomi Benger. Details can be obtained from:
261 http://eprint.iacr.org/2014/140
263 Thanks to Yuval Yarom and Naomi Benger for discovering this
264 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
265 [Yuval Yarom and Naomi Benger]
267 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
268 this fixes a limitation in previous versions of OpenSSL.
271 *) Experimental encrypt-then-mac support.
273 Experimental support for encrypt then mac from
274 draft-gutmann-tls-encrypt-then-mac-02.txt
276 To enable it set the appropriate extension number (0x42 for the test
277 server) using e.g. -DTLSEXT_TYPE_encrypt_then_mac=0x42
279 For non-compliant peers (i.e. just about everything) this should have no
282 WARNING: EXPERIMENTAL, SUBJECT TO CHANGE.
286 *) Add EVP support for key wrapping algorithms, to avoid problems with
287 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
288 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
289 algorithms and include tests cases.
292 *) Extend CMS code to support RSA-PSS signatures and RSA-OAEP for
296 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
297 MGF1 digest and OAEP label.
300 *) Make openssl verify return errors.
301 [Chris Palmer <palmer@google.com> and Ben Laurie]
303 *) New function ASN1_TIME_diff to calculate the difference between two
304 ASN1_TIME structures or one structure and the current time.
307 *) Update fips_test_suite to support multiple command line options. New
308 test to induce all self test errors in sequence and check expected
312 *) Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and
313 sign or verify all in one operation.
316 *) Add fips_algvs: a multicall fips utility incorporating all the algorithm
317 test programs and fips_test_suite. Includes functionality to parse
318 the minimal script output of fipsalgest.pl directly.
321 *) Add authorisation parameter to FIPS_module_mode_set().
324 *) Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves.
327 *) Use separate DRBG fields for internal and external flags. New function
328 FIPS_drbg_health_check() to perform on demand health checking. Add
329 generation tests to fips_test_suite with reduced health check interval to
330 demonstrate periodic health checking. Add "nodh" option to
331 fips_test_suite to skip very slow DH test.
334 *) New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers
338 *) More extensive health check for DRBG checking many more failure modes.
339 New function FIPS_selftest_drbg_all() to handle every possible DRBG
340 combination: call this in fips_test_suite.
343 *) Add support for Dual EC DRBG from SP800-90. Update DRBG algorithm test
344 and POST to handle Dual EC cases.
347 *) Add support for canonical generation of DSA parameter 'g'. See
350 *) Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
351 POST to handle HMAC cases.
354 *) Add functions FIPS_module_version() and FIPS_module_version_text()
355 to return numerical and string versions of the FIPS module number.
358 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
359 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implemented
360 outside the validated module in the FIPS capable OpenSSL.
363 *) Minor change to DRBG entropy callback semantics. In some cases
364 there is no multiple of the block length between min_len and
365 max_len. Allow the callback to return more than max_len bytes
366 of entropy but discard any extra: it is the callback's responsibility
367 to ensure that the extra data discarded does not impact the
368 requested amount of entropy.
371 *) Add PRNG security strength checks to RSA, DSA and ECDSA using
372 information in FIPS186-3, SP800-57 and SP800-131A.
375 *) CCM support via EVP. Interface is very similar to GCM case except we
376 must supply all data in one chunk (i.e. no update, final) and the
377 message length must be supplied if AAD is used. Add algorithm test
381 *) Initial version of POST overhaul. Add POST callback to allow the status
382 of POST to be monitored and/or failures induced. Modify fips_test_suite
383 to use callback. Always run all selftests even if one fails.
386 *) XTS support including algorithm test driver in the fips_gcmtest program.
387 Note: this does increase the maximum key length from 32 to 64 bytes but
388 there should be no binary compatibility issues as existing applications
389 will never use XTS mode.
392 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
393 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
394 performs algorithm blocking for unapproved PRNG types. Also do not
395 set PRNG type in FIPS_mode_set(): leave this to the application.
396 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
397 the standard OpenSSL PRNG: set additional data to a date time vector.
400 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
401 This shouldn't present any incompatibility problems because applications
402 shouldn't be using these directly and any that are will need to rethink
403 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
406 *) Extensive self tests and health checking required by SP800-90 DRBG.
407 Remove strength parameter from FIPS_drbg_instantiate and always
408 instantiate at maximum supported strength.
411 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
414 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
417 *) New function DH_compute_key_padded() to compute a DH key and pad with
418 leading zeroes if needed: this complies with SP800-56A et al.
421 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
422 anything, incomplete, subject to change and largely untested at present.
425 *) Modify fipscanisteronly build option to only build the necessary object
426 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
429 *) Add experimental option FIPSSYMS to give all symbols in
430 fipscanister.o and FIPS or fips prefix. This will avoid
431 conflicts with future versions of OpenSSL. Add perl script
432 util/fipsas.pl to preprocess assembly language source files
433 and rename any affected symbols.
436 *) Add selftest checks and algorithm block of non-fips algorithms in
437 FIPS mode. Remove DES2 from selftests.
440 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
441 return internal method without any ENGINE dependencies. Add new
442 tiny fips sign and verify functions.
445 *) New build option no-ec2m to disable characteristic 2 code.
448 *) New build option "fipscanisteronly". This only builds fipscanister.o
449 and (currently) associated fips utilities. Uses the file Makefile.fips
450 instead of Makefile.org as the prototype.
453 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
454 Update fips_gcmtest to use IV generator.
457 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
458 setting output buffer to NULL. The *Final function must be
459 called although it will not retrieve any additional data. The tag
460 can be set or retrieved with a ctrl. The IV length is by default 12
461 bytes (96 bits) but can be set to an alternative value. If the IV
462 length exceeds the maximum IV length (currently 16 bytes) it cannot be
466 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
467 underlying do_cipher function handles all cipher semantics itself
468 including padding and finalisation. This is useful if (for example)
469 an ENGINE cipher handles block padding itself. The behaviour of
470 do_cipher is subtly changed if this flag is set: the return value
471 is the number of characters written to the output buffer (zero is
472 no longer an error code) or a negative error code. Also if the
473 input buffer is NULL and length 0 finalisation should be performed.
476 *) If a candidate issuer certificate is already part of the constructed
477 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
480 *) Improve forward-security support: add functions
482 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
483 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
485 for use by SSL/TLS servers; the callback function will be called whenever a
486 new session is created, and gets to decide whether the session may be
487 cached to make it resumable (return 0) or not (return 1). (As by the
488 SSL/TLS protocol specifications, the session_id sent by the server will be
489 empty to indicate that the session is not resumable; also, the server will
490 not generate RFC 4507 (RFC 5077) session tickets.)
492 A simple reasonable callback implementation is to return is_forward_secure.
493 This parameter will be set to 1 or 0 depending on the ciphersuite selected
494 by the SSL/TLS server library, indicating whether it can provide forward
496 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
498 *) New -verify_name option in command line utilities to set verification
502 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
503 Add CMAC pkey methods.
506 *) Experimental renegotiation in s_server -www mode. If the client
507 browses /reneg connection is renegotiated. If /renegcert it is
508 renegotiated requesting a certificate.
511 *) Add an "external" session cache for debugging purposes to s_server. This
512 should help trace issues which normally are only apparent in deployed
513 multi-process servers.
516 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
517 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
518 BIO_set_cipher() and some obscure PEM functions were changed so they
519 can now return an error. The RAND changes required a change to the
520 RAND_METHOD structure.
523 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
524 a gcc attribute to warn if the result of a function is ignored. This
525 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
526 whose return value is often ignored.
529 Changes between 1.0.2c and 1.0.2d [9 Jul 2015]
531 *) Alternate chains certificate forgery
533 During certificate verfification, OpenSSL will attempt to find an
534 alternative certificate chain if the first attempt to build such a chain
535 fails. An error in the implementation of this logic can mean that an
536 attacker could cause certain checks on untrusted certificates to be
537 bypassed, such as the CA flag, enabling them to use a valid leaf
538 certificate to act as a CA and "issue" an invalid certificate.
540 This issue was reported to OpenSSL by Adam Langley/David Benjamin
544 Changes between 1.0.2b and 1.0.2c [12 Jun 2015]
546 *) Fix HMAC ABI incompatibility. The previous version introduced an ABI
547 incompatibility in the handling of HMAC. The previous ABI has now been
551 Changes between 1.0.2a and 1.0.2b [11 Jun 2015]
553 *) Malformed ECParameters causes infinite loop
555 When processing an ECParameters structure OpenSSL enters an infinite loop
556 if the curve specified is over a specially malformed binary polynomial
559 This can be used to perform denial of service against any
560 system which processes public keys, certificate requests or
561 certificates. This includes TLS clients and TLS servers with
562 client authentication enabled.
564 This issue was reported to OpenSSL by Joseph Barr-Pixton.
568 *) Exploitable out-of-bounds read in X509_cmp_time
570 X509_cmp_time does not properly check the length of the ASN1_TIME
571 string and can read a few bytes out of bounds. In addition,
572 X509_cmp_time accepts an arbitrary number of fractional seconds in the
575 An attacker can use this to craft malformed certificates and CRLs of
576 various sizes and potentially cause a segmentation fault, resulting in
577 a DoS on applications that verify certificates or CRLs. TLS clients
578 that verify CRLs are affected. TLS clients and servers with client
579 authentication enabled may be affected if they use custom verification
582 This issue was reported to OpenSSL by Robert Swiecki (Google), and
583 independently by Hanno Böck.
587 *) PKCS7 crash with missing EnvelopedContent
589 The PKCS#7 parsing code does not handle missing inner EncryptedContent
590 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs
591 with missing content and trigger a NULL pointer dereference on parsing.
593 Applications that decrypt PKCS#7 data or otherwise parse PKCS#7
594 structures from untrusted sources are affected. OpenSSL clients and
595 servers are not affected.
597 This issue was reported to OpenSSL by Michal Zalewski (Google).
601 *) CMS verify infinite loop with unknown hash function
603 When verifying a signedData message the CMS code can enter an infinite loop
604 if presented with an unknown hash function OID. This can be used to perform
605 denial of service against any system which verifies signedData messages using
607 This issue was reported to OpenSSL by Johannes Bauer.
611 *) Race condition handling NewSessionTicket
613 If a NewSessionTicket is received by a multi-threaded client when attempting to
614 reuse a previous ticket then a race condition can occur potentially leading to
615 a double free of the ticket data.
619 *) Only support 256-bit or stronger elliptic curves with the
620 'ecdh_auto' setting (server) or by default (client). Of supported
621 curves, prefer P-256 (both).
624 Changes between 1.0.2 and 1.0.2a [19 Mar 2015]
626 *) ClientHello sigalgs DoS fix
628 If a client connects to an OpenSSL 1.0.2 server and renegotiates with an
629 invalid signature algorithms extension a NULL pointer dereference will
630 occur. This can be exploited in a DoS attack against the server.
632 This issue was was reported to OpenSSL by David Ramos of Stanford
635 [Stephen Henson and Matt Caswell]
637 *) Multiblock corrupted pointer fix
639 OpenSSL 1.0.2 introduced the "multiblock" performance improvement. This
640 feature only applies on 64 bit x86 architecture platforms that support AES
641 NI instructions. A defect in the implementation of "multiblock" can cause
642 OpenSSL's internal write buffer to become incorrectly set to NULL when
643 using non-blocking IO. Typically, when the user application is using a
644 socket BIO for writing, this will only result in a failed connection.
645 However if some other BIO is used then it is likely that a segmentation
646 fault will be triggered, thus enabling a potential DoS attack.
648 This issue was reported to OpenSSL by Daniel Danner and Rainer Mueller.
652 *) Segmentation fault in DTLSv1_listen fix
654 The DTLSv1_listen function is intended to be stateless and processes the
655 initial ClientHello from many peers. It is common for user code to loop
656 over the call to DTLSv1_listen until a valid ClientHello is received with
657 an associated cookie. A defect in the implementation of DTLSv1_listen means
658 that state is preserved in the SSL object from one invocation to the next
659 that can lead to a segmentation fault. Errors processing the initial
660 ClientHello can trigger this scenario. An example of such an error could be
661 that a DTLS1.0 only client is attempting to connect to a DTLS1.2 only
664 This issue was reported to OpenSSL by Per Allansson.
668 *) Segmentation fault in ASN1_TYPE_cmp fix
670 The function ASN1_TYPE_cmp will crash with an invalid read if an attempt is
671 made to compare ASN.1 boolean types. Since ASN1_TYPE_cmp is used to check
672 certificate signature algorithm consistency this can be used to crash any
673 certificate verification operation and exploited in a DoS attack. Any
674 application which performs certificate verification is vulnerable including
675 OpenSSL clients and servers which enable client authentication.
679 *) Segmentation fault for invalid PSS parameters fix
681 The signature verification routines will crash with a NULL pointer
682 dereference if presented with an ASN.1 signature using the RSA PSS
683 algorithm and invalid parameters. Since these routines are used to verify
684 certificate signature algorithms this can be used to crash any
685 certificate verification operation and exploited in a DoS attack. Any
686 application which performs certificate verification is vulnerable including
687 OpenSSL clients and servers which enable client authentication.
689 This issue was was reported to OpenSSL by Brian Carpenter.
693 *) ASN.1 structure reuse memory corruption fix
695 Reusing a structure in ASN.1 parsing may allow an attacker to cause
696 memory corruption via an invalid write. Such reuse is and has been
697 strongly discouraged and is believed to be rare.
699 Applications that parse structures containing CHOICE or ANY DEFINED BY
700 components may be affected. Certificate parsing (d2i_X509 and related
701 functions) are however not affected. OpenSSL clients and servers are
706 *) PKCS7 NULL pointer dereferences fix
708 The PKCS#7 parsing code does not handle missing outer ContentInfo
709 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs with
710 missing content and trigger a NULL pointer dereference on parsing.
712 Applications that verify PKCS#7 signatures, decrypt PKCS#7 data or
713 otherwise parse PKCS#7 structures from untrusted sources are
714 affected. OpenSSL clients and servers are not affected.
716 This issue was reported to OpenSSL by Michal Zalewski (Google).
720 *) DoS via reachable assert in SSLv2 servers fix
722 A malicious client can trigger an OPENSSL_assert (i.e., an abort) in
723 servers that both support SSLv2 and enable export cipher suites by sending
724 a specially crafted SSLv2 CLIENT-MASTER-KEY message.
726 This issue was discovered by Sean Burford (Google) and Emilia Käsper
727 (OpenSSL development team).
731 *) Empty CKE with client auth and DHE fix
733 If client auth is used then a server can seg fault in the event of a DHE
734 ciphersuite being selected and a zero length ClientKeyExchange message
735 being sent by the client. This could be exploited in a DoS attack.
739 *) Handshake with unseeded PRNG fix
741 Under certain conditions an OpenSSL 1.0.2 client can complete a handshake
742 with an unseeded PRNG. The conditions are:
743 - The client is on a platform where the PRNG has not been seeded
744 automatically, and the user has not seeded manually
745 - A protocol specific client method version has been used (i.e. not
746 SSL_client_methodv23)
747 - A ciphersuite is used that does not require additional random data from
748 the PRNG beyond the initial ClientHello client random (e.g. PSK-RC4-SHA).
750 If the handshake succeeds then the client random that has been used will
751 have been generated from a PRNG with insufficient entropy and therefore the
752 output may be predictable.
754 For example using the following command with an unseeded openssl will
755 succeed on an unpatched platform:
757 openssl s_client -psk 1a2b3c4d -tls1_2 -cipher PSK-RC4-SHA
761 *) Use After Free following d2i_ECPrivatekey error fix
763 A malformed EC private key file consumed via the d2i_ECPrivateKey function
764 could cause a use after free condition. This, in turn, could cause a double
765 free in several private key parsing functions (such as d2i_PrivateKey
766 or EVP_PKCS82PKEY) and could lead to a DoS attack or memory corruption
767 for applications that receive EC private keys from untrusted
768 sources. This scenario is considered rare.
770 This issue was discovered by the BoringSSL project and fixed in their
775 *) X509_to_X509_REQ NULL pointer deref fix
777 The function X509_to_X509_REQ will crash with a NULL pointer dereference if
778 the certificate key is invalid. This function is rarely used in practice.
780 This issue was discovered by Brian Carpenter.
784 *) Removed the export ciphers from the DEFAULT ciphers
787 Changes between 1.0.1l and 1.0.2 [22 Jan 2015]
789 *) Facilitate "universal" ARM builds targeting range of ARM ISAs, e.g.
790 ARMv5 through ARMv8, as opposite to "locking" it to single one.
791 So far those who have to target multiple plaforms would compromise
792 and argue that binary targeting say ARMv5 would still execute on
793 ARMv8. "Universal" build resolves this compromise by providing
794 near-optimal performance even on newer platforms.
797 *) Accelerated NIST P-256 elliptic curve implementation for x86_64
798 (other platforms pending).
799 [Shay Gueron & Vlad Krasnov (Intel Corp), Andy Polyakov]
801 *) Add support for the SignedCertificateTimestampList certificate and
802 OCSP response extensions from RFC6962.
805 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
806 for corner cases. (Certain input points at infinity could lead to
807 bogus results, with non-infinity inputs mapped to infinity too.)
810 *) Initial support for PowerISA 2.0.7, first implemented in POWER8.
811 This covers AES, SHA256/512 and GHASH. "Initial" means that most
812 common cases are optimized and there still is room for further
813 improvements. Vector Permutation AES for Altivec is also added.
816 *) Add support for little-endian ppc64 Linux target.
817 [Marcelo Cerri (IBM)]
819 *) Initial support for AMRv8 ISA crypto extensions. This covers AES,
820 SHA1, SHA256 and GHASH. "Initial" means that most common cases
821 are optimized and there still is room for further improvements.
822 Both 32- and 64-bit modes are supported.
823 [Andy Polyakov, Ard Biesheuvel (Linaro)]
825 *) Improved ARMv7 NEON support.
828 *) Support for SPARC Architecture 2011 crypto extensions, first
829 implemented in SPARC T4. This covers AES, DES, Camellia, SHA1,
830 SHA256/512, MD5, GHASH and modular exponentiation.
831 [Andy Polyakov, David Miller]
833 *) Accelerated modular exponentiation for Intel processors, a.k.a.
835 [Shay Gueron & Vlad Krasnov (Intel Corp)]
837 *) Support for new and upcoming Intel processors, including AVX2,
838 BMI and SHA ISA extensions. This includes additional "stitched"
839 implementations, AESNI-SHA256 and GCM, and multi-buffer support
842 This work was sponsored by Intel Corp.
845 *) Support for DTLS 1.2. This adds two sets of DTLS methods: DTLS_*_method()
846 supports both DTLS 1.2 and 1.0 and should use whatever version the peer
847 supports and DTLSv1_2_*_method() which supports DTLS 1.2 only.
850 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
851 this fixes a limiation in previous versions of OpenSSL.
854 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
855 MGF1 digest and OAEP label.
858 *) Add EVP support for key wrapping algorithms, to avoid problems with
859 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
860 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
861 algorithms and include tests cases.
864 *) Add functions to allocate and set the fields of an ECDSA_METHOD
866 [Douglas E. Engert, Steve Henson]
868 *) New functions OPENSSL_gmtime_diff and ASN1_TIME_diff to find the
869 difference in days and seconds between two tm or ASN1_TIME structures.
872 *) Add -rev test option to s_server to just reverse order of characters
873 received by client and send back to server. Also prints an abbreviated
874 summary of the connection parameters.
877 *) New option -brief for s_client and s_server to print out a brief summary
878 of connection parameters.
881 *) Add callbacks for arbitrary TLS extensions.
882 [Trevor Perrin <trevp@trevp.net> and Ben Laurie]
884 *) New option -crl_download in several openssl utilities to download CRLs
885 from CRLDP extension in certificates.
888 *) New options -CRL and -CRLform for s_client and s_server for CRLs.
891 *) New function X509_CRL_diff to generate a delta CRL from the difference
892 of two full CRLs. Add support to "crl" utility.
895 *) New functions to set lookup_crls function and to retrieve
896 X509_STORE from X509_STORE_CTX.
899 *) Print out deprecated issuer and subject unique ID fields in
903 *) Extend OCSP I/O functions so they can be used for simple general purpose
904 HTTP as well as OCSP. New wrapper function which can be used to download
905 CRLs using the OCSP API.
908 *) Delegate command line handling in s_client/s_server to SSL_CONF APIs.
911 *) SSL_CONF* functions. These provide a common framework for application
912 configuration using configuration files or command lines.
915 *) SSL/TLS tracing code. This parses out SSL/TLS records using the
916 message callback and prints the results. Needs compile time option
917 "enable-ssl-trace". New options to s_client and s_server to enable
921 *) New ctrl and macro to retrieve supported points extensions.
922 Print out extension in s_server and s_client.
925 *) New functions to retrieve certificate signature and signature
929 *) Add functions to retrieve and manipulate the raw cipherlist sent by a
933 *) New Suite B modes for TLS code. These use and enforce the requirements
934 of RFC6460: restrict ciphersuites, only permit Suite B algorithms and
935 only use Suite B curves. The Suite B modes can be set by using the
936 strings "SUITEB128", "SUITEB192" or "SUITEB128ONLY" for the cipherstring.
939 *) New chain verification flags for Suite B levels of security. Check
940 algorithms are acceptable when flags are set in X509_verify_cert.
943 *) Make tls1_check_chain return a set of flags indicating checks passed
944 by a certificate chain. Add additional tests to handle client
945 certificates: checks for matching certificate type and issuer name
949 *) If an attempt is made to use a signature algorithm not in the peer
950 preference list abort the handshake. If client has no suitable
951 signature algorithms in response to a certificate request do not
955 *) If server EC tmp key is not in client preference list abort handshake.
958 *) Add support for certificate stores in CERT structure. This makes it
959 possible to have different stores per SSL structure or one store in
960 the parent SSL_CTX. Include distint stores for certificate chain
961 verification and chain building. New ctrl SSL_CTRL_BUILD_CERT_CHAIN
962 to build and store a certificate chain in CERT structure: returing
963 an error if the chain cannot be built: this will allow applications
964 to test if a chain is correctly configured.
966 Note: if the CERT based stores are not set then the parent SSL_CTX
967 store is used to retain compatibility with existing behaviour.
971 *) New function ssl_set_client_disabled to set a ciphersuite disabled
972 mask based on the current session, check mask when sending client
973 hello and checking the requested ciphersuite.
976 *) New ctrls to retrieve and set certificate types in a certificate
977 request message. Print out received values in s_client. If certificate
978 types is not set with custom values set sensible values based on
979 supported signature algorithms.
982 *) Support for distinct client and server supported signature algorithms.
985 *) Add certificate callback. If set this is called whenever a certificate
986 is required by client or server. An application can decide which
987 certificate chain to present based on arbitrary criteria: for example
988 supported signature algorithms. Add very simple example to s_server.
989 This fixes many of the problems and restrictions of the existing client
990 certificate callback: for example you can now clear an existing
991 certificate and specify the whole chain.
994 *) Add new "valid_flags" field to CERT_PKEY structure which determines what
995 the certificate can be used for (if anything). Set valid_flags field
996 in new tls1_check_chain function. Simplify ssl_set_cert_masks which used
997 to have similar checks in it.
999 Add new "cert_flags" field to CERT structure and include a "strict mode".
1000 This enforces some TLS certificate requirements (such as only permitting
1001 certificate signature algorithms contained in the supported algorithms
1002 extension) which some implementations ignore: this option should be used
1003 with caution as it could cause interoperability issues.
1006 *) Update and tidy signature algorithm extension processing. Work out
1007 shared signature algorithms based on preferences and peer algorithms
1008 and print them out in s_client and s_server. Abort handshake if no
1009 shared signature algorithms.
1012 *) Add new functions to allow customised supported signature algorithms
1013 for SSL and SSL_CTX structures. Add options to s_client and s_server
1017 *) New function SSL_certs_clear() to delete all references to certificates
1018 from an SSL structure. Before this once a certificate had been added
1019 it couldn't be removed.
1022 *) Integrate hostname, email address and IP address checking with certificate
1023 verification. New verify options supporting checking in opensl utility.
1026 *) Fixes and wildcard matching support to hostname and email checking
1027 functions. Add manual page.
1028 [Florian Weimer (Red Hat Product Security Team)]
1030 *) New functions to check a hostname email or IP address against a
1031 certificate. Add options x509 utility to print results of checks against
1035 *) Fix OCSP checking.
1036 [Rob Stradling <rob.stradling@comodo.com> and Ben Laurie]
1038 *) Initial experimental support for explicitly trusted non-root CAs.
1039 OpenSSL still tries to build a complete chain to a root but if an
1040 intermediate CA has a trust setting included that is used. The first
1041 setting is used: whether to trust (e.g., -addtrust option to the x509
1045 *) Add -trusted_first option which attempts to find certificates in the
1046 trusted store even if an untrusted chain is also supplied.
1049 *) MIPS assembly pack updates: support for MIPS32r2 and SmartMIPS ASE,
1050 platform support for Linux and Android.
1053 *) Support for linux-x32, ILP32 environment in x86_64 framework.
1056 *) Experimental multi-implementation support for FIPS capable OpenSSL.
1057 When in FIPS mode the approved implementations are used as normal,
1058 when not in FIPS mode the internal unapproved versions are used instead.
1059 This means that the FIPS capable OpenSSL isn't forced to use the
1060 (often lower performance) FIPS implementations outside FIPS mode.
1063 *) Transparently support X9.42 DH parameters when calling
1064 PEM_read_bio_DHparameters. This means existing applications can handle
1065 the new parameter format automatically.
1068 *) Initial experimental support for X9.42 DH parameter format: mainly
1069 to support use of 'q' parameter for RFC5114 parameters.
1072 *) Add DH parameters from RFC5114 including test data to dhtest.
1075 *) Support for automatic EC temporary key parameter selection. If enabled
1076 the most preferred EC parameters are automatically used instead of
1077 hardcoded fixed parameters. Now a server just has to call:
1078 SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically
1079 support ECDH and use the most appropriate parameters.
1082 *) Enhance and tidy EC curve and point format TLS extension code. Use
1083 static structures instead of allocation if default values are used.
1084 New ctrls to set curves we wish to support and to retrieve shared curves.
1085 Print out shared curves in s_server. New options to s_server and s_client
1086 to set list of supported curves.
1089 *) New ctrls to retrieve supported signature algorithms and
1090 supported curve values as an array of NIDs. Extend openssl utility
1091 to print out received values.
1094 *) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert
1095 between NIDs and the more common NIST names such as "P-256". Enhance
1096 ecparam utility and ECC method to recognise the NIST names for curves.
1099 *) Enhance SSL/TLS certificate chain handling to support different
1100 chains for each certificate instead of one chain in the parent SSL_CTX.
1103 *) Support for fixed DH ciphersuite client authentication: where both
1104 server and client use DH certificates with common parameters.
1107 *) Support for fixed DH ciphersuites: those requiring DH server
1111 *) New function i2d_re_X509_tbs for re-encoding the TBS portion of
1113 Note: Related 1.0.2-beta specific macros X509_get_cert_info,
1114 X509_CINF_set_modified, X509_CINF_get_issuer, X509_CINF_get_extensions and
1115 X509_CINF_get_signature were reverted post internal team review.
1117 Changes between 1.0.1k and 1.0.1l [15 Jan 2015]
1119 *) Build fixes for the Windows and OpenVMS platforms
1120 [Matt Caswell and Richard Levitte]
1122 Changes between 1.0.1j and 1.0.1k [8 Jan 2015]
1124 *) Fix DTLS segmentation fault in dtls1_get_record. A carefully crafted DTLS
1125 message can cause a segmentation fault in OpenSSL due to a NULL pointer
1126 dereference. This could lead to a Denial Of Service attack. Thanks to
1127 Markus Stenberg of Cisco Systems, Inc. for reporting this issue.
1131 *) Fix DTLS memory leak in dtls1_buffer_record. A memory leak can occur in the
1132 dtls1_buffer_record function under certain conditions. In particular this
1133 could occur if an attacker sent repeated DTLS records with the same
1134 sequence number but for the next epoch. The memory leak could be exploited
1135 by an attacker in a Denial of Service attack through memory exhaustion.
1136 Thanks to Chris Mueller for reporting this issue.
1140 *) Fix issue where no-ssl3 configuration sets method to NULL. When openssl is
1141 built with the no-ssl3 option and a SSL v3 ClientHello is received the ssl
1142 method would be set to NULL which could later result in a NULL pointer
1143 dereference. Thanks to Frank Schmirler for reporting this issue.
1147 *) Abort handshake if server key exchange message is omitted for ephemeral
1150 Thanks to Karthikeyan Bhargavan of the PROSECCO team at INRIA for
1151 reporting this issue.
1155 *) Remove non-export ephemeral RSA code on client and server. This code
1156 violated the TLS standard by allowing the use of temporary RSA keys in
1157 non-export ciphersuites and could be used by a server to effectively
1158 downgrade the RSA key length used to a value smaller than the server
1159 certificate. Thanks for Karthikeyan Bhargavan of the PROSECCO team at
1160 INRIA or reporting this issue.
1164 *) Fixed issue where DH client certificates are accepted without verification.
1165 An OpenSSL server will accept a DH certificate for client authentication
1166 without the certificate verify message. This effectively allows a client to
1167 authenticate without the use of a private key. This only affects servers
1168 which trust a client certificate authority which issues certificates
1169 containing DH keys: these are extremely rare and hardly ever encountered.
1170 Thanks for Karthikeyan Bhargavan of the PROSECCO team at INRIA or reporting
1175 *) Ensure that the session ID context of an SSL is updated when its
1176 SSL_CTX is updated via SSL_set_SSL_CTX.
1178 The session ID context is typically set from the parent SSL_CTX,
1179 and can vary with the CTX.
1182 *) Fix various certificate fingerprint issues.
1184 By using non-DER or invalid encodings outside the signed portion of a
1185 certificate the fingerprint can be changed without breaking the signature.
1186 Although no details of the signed portion of the certificate can be changed
1187 this can cause problems with some applications: e.g. those using the
1188 certificate fingerprint for blacklists.
1190 1. Reject signatures with non zero unused bits.
1192 If the BIT STRING containing the signature has non zero unused bits reject
1193 the signature. All current signature algorithms require zero unused bits.
1195 2. Check certificate algorithm consistency.
1197 Check the AlgorithmIdentifier inside TBS matches the one in the
1198 certificate signature. NB: this will result in signature failure
1199 errors for some broken certificates.
1201 Thanks to Konrad Kraszewski from Google for reporting this issue.
1203 3. Check DSA/ECDSA signatures use DER.
1205 Reencode DSA/ECDSA signatures and compare with the original received
1206 signature. Return an error if there is a mismatch.
1208 This will reject various cases including garbage after signature
1209 (thanks to Antti Karjalainen and Tuomo Untinen from the Codenomicon CROSS
1210 program for discovering this case) and use of BER or invalid ASN.1 INTEGERs
1211 (negative or with leading zeroes).
1213 Further analysis was conducted and fixes were developed by Stephen Henson
1214 of the OpenSSL core team.
1219 *) Correct Bignum squaring. Bignum squaring (BN_sqr) may produce incorrect
1220 results on some platforms, including x86_64. This bug occurs at random
1221 with a very low probability, and is not known to be exploitable in any
1222 way, though its exact impact is difficult to determine. Thanks to Pieter
1223 Wuille (Blockstream) who reported this issue and also suggested an initial
1224 fix. Further analysis was conducted by the OpenSSL development team and
1225 Adam Langley of Google. The final fix was developed by Andy Polyakov of
1226 the OpenSSL core team.
1230 *) Do not resume sessions on the server if the negotiated protocol
1231 version does not match the session's version. Resuming with a different
1232 version, while not strictly forbidden by the RFC, is of questionable
1233 sanity and breaks all known clients.
1234 [David Benjamin, Emilia Käsper]
1236 *) Tighten handling of the ChangeCipherSpec (CCS) message: reject
1237 early CCS messages during renegotiation. (Note that because
1238 renegotiation is encrypted, this early CCS was not exploitable.)
1241 *) Tighten client-side session ticket handling during renegotiation:
1242 ensure that the client only accepts a session ticket if the server sends
1243 the extension anew in the ServerHello. Previously, a TLS client would
1244 reuse the old extension state and thus accept a session ticket if one was
1245 announced in the initial ServerHello.
1247 Similarly, ensure that the client requires a session ticket if one
1248 was advertised in the ServerHello. Previously, a TLS client would
1249 ignore a missing NewSessionTicket message.
1252 Changes between 1.0.1i and 1.0.1j [15 Oct 2014]
1254 *) SRTP Memory Leak.
1256 A flaw in the DTLS SRTP extension parsing code allows an attacker, who
1257 sends a carefully crafted handshake message, to cause OpenSSL to fail
1258 to free up to 64k of memory causing a memory leak. This could be
1259 exploited in a Denial Of Service attack. This issue affects OpenSSL
1260 1.0.1 server implementations for both SSL/TLS and DTLS regardless of
1261 whether SRTP is used or configured. Implementations of OpenSSL that
1262 have been compiled with OPENSSL_NO_SRTP defined are not affected.
1264 The fix was developed by the OpenSSL team.
1268 *) Session Ticket Memory Leak.
1270 When an OpenSSL SSL/TLS/DTLS server receives a session ticket the
1271 integrity of that ticket is first verified. In the event of a session
1272 ticket integrity check failing, OpenSSL will fail to free memory
1273 causing a memory leak. By sending a large number of invalid session
1274 tickets an attacker could exploit this issue in a Denial Of Service
1279 *) Build option no-ssl3 is incomplete.
1281 When OpenSSL is configured with "no-ssl3" as a build option, servers
1282 could accept and complete a SSL 3.0 handshake, and clients could be
1283 configured to send them.
1285 [Akamai and the OpenSSL team]
1287 *) Add support for TLS_FALLBACK_SCSV.
1288 Client applications doing fallback retries should call
1289 SSL_set_mode(s, SSL_MODE_SEND_FALLBACK_SCSV).
1291 [Adam Langley, Bodo Moeller]
1293 *) Add additional DigestInfo checks.
1295 Reencode DigestInto in DER and check against the original when
1296 verifying RSA signature: this will reject any improperly encoded
1297 DigestInfo structures.
1299 Note: this is a precautionary measure and no attacks are currently known.
1303 Changes between 1.0.1h and 1.0.1i [6 Aug 2014]
1305 *) Fix SRP buffer overrun vulnerability. Invalid parameters passed to the
1306 SRP code can be overrun an internal buffer. Add sanity check that
1307 g, A, B < N to SRP code.
1309 Thanks to Sean Devlin and Watson Ladd of Cryptography Services, NCC
1310 Group for discovering this issue.
1314 *) A flaw in the OpenSSL SSL/TLS server code causes the server to negotiate
1315 TLS 1.0 instead of higher protocol versions when the ClientHello message
1316 is badly fragmented. This allows a man-in-the-middle attacker to force a
1317 downgrade to TLS 1.0 even if both the server and the client support a
1318 higher protocol version, by modifying the client's TLS records.
1320 Thanks to David Benjamin and Adam Langley (Google) for discovering and
1321 researching this issue.
1325 *) OpenSSL DTLS clients enabling anonymous (EC)DH ciphersuites are subject
1326 to a denial of service attack. A malicious server can crash the client
1327 with a null pointer dereference (read) by specifying an anonymous (EC)DH
1328 ciphersuite and sending carefully crafted handshake messages.
1330 Thanks to Felix Gröbert (Google) for discovering and researching this
1335 *) By sending carefully crafted DTLS packets an attacker could cause openssl
1336 to leak memory. This can be exploited through a Denial of Service attack.
1337 Thanks to Adam Langley for discovering and researching this issue.
1341 *) An attacker can force openssl to consume large amounts of memory whilst
1342 processing DTLS handshake messages. This can be exploited through a
1343 Denial of Service attack.
1344 Thanks to Adam Langley for discovering and researching this issue.
1348 *) An attacker can force an error condition which causes openssl to crash
1349 whilst processing DTLS packets due to memory being freed twice. This
1350 can be exploited through a Denial of Service attack.
1351 Thanks to Adam Langley and Wan-Teh Chang for discovering and researching
1356 *) If a multithreaded client connects to a malicious server using a resumed
1357 session and the server sends an ec point format extension it could write
1358 up to 255 bytes to freed memory.
1360 Thanks to Gabor Tyukasz (LogMeIn Inc) for discovering and researching this
1365 *) A malicious server can crash an OpenSSL client with a null pointer
1366 dereference (read) by specifying an SRP ciphersuite even though it was not
1367 properly negotiated with the client. This can be exploited through a
1368 Denial of Service attack.
1370 Thanks to Joonas Kuorilehto and Riku Hietamäki (Codenomicon) for
1371 discovering and researching this issue.
1375 *) A flaw in OBJ_obj2txt may cause pretty printing functions such as
1376 X509_name_oneline, X509_name_print_ex et al. to leak some information
1377 from the stack. Applications may be affected if they echo pretty printing
1378 output to the attacker.
1380 Thanks to Ivan Fratric (Google) for discovering this issue.
1382 [Emilia Käsper, and Steve Henson]
1384 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
1385 for corner cases. (Certain input points at infinity could lead to
1386 bogus results, with non-infinity inputs mapped to infinity too.)
1389 Changes between 1.0.1g and 1.0.1h [5 Jun 2014]
1391 *) Fix for SSL/TLS MITM flaw. An attacker using a carefully crafted
1392 handshake can force the use of weak keying material in OpenSSL
1393 SSL/TLS clients and servers.
1395 Thanks to KIKUCHI Masashi (Lepidum Co. Ltd.) for discovering and
1396 researching this issue. (CVE-2014-0224)
1397 [KIKUCHI Masashi, Steve Henson]
1399 *) Fix DTLS recursion flaw. By sending an invalid DTLS handshake to an
1400 OpenSSL DTLS client the code can be made to recurse eventually crashing
1403 Thanks to Imre Rad (Search-Lab Ltd.) for discovering this issue.
1405 [Imre Rad, Steve Henson]
1407 *) Fix DTLS invalid fragment vulnerability. A buffer overrun attack can
1408 be triggered by sending invalid DTLS fragments to an OpenSSL DTLS
1409 client or server. This is potentially exploitable to run arbitrary
1410 code on a vulnerable client or server.
1412 Thanks to Jüri Aedla for reporting this issue. (CVE-2014-0195)
1413 [Jüri Aedla, Steve Henson]
1415 *) Fix bug in TLS code where clients enable anonymous ECDH ciphersuites
1416 are subject to a denial of service attack.
1418 Thanks to Felix Gröbert and Ivan Fratric at Google for discovering
1419 this issue. (CVE-2014-3470)
1420 [Felix Gröbert, Ivan Fratric, Steve Henson]
1422 *) Harmonize version and its documentation. -f flag is used to display
1424 [mancha <mancha1@zoho.com>]
1426 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
1427 in i2d_ECPrivateKey.
1428 [mancha <mancha1@zoho.com>]
1430 *) Fix some double frees. These are not thought to be exploitable.
1431 [mancha <mancha1@zoho.com>]
1433 Changes between 1.0.1f and 1.0.1g [7 Apr 2014]
1435 *) A missing bounds check in the handling of the TLS heartbeat extension
1436 can be used to reveal up to 64k of memory to a connected client or
1439 Thanks for Neel Mehta of Google Security for discovering this bug and to
1440 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
1441 preparing the fix (CVE-2014-0160)
1442 [Adam Langley, Bodo Moeller]
1444 *) Fix for the attack described in the paper "Recovering OpenSSL
1445 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
1446 by Yuval Yarom and Naomi Benger. Details can be obtained from:
1447 http://eprint.iacr.org/2014/140
1449 Thanks to Yuval Yarom and Naomi Benger for discovering this
1450 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
1451 [Yuval Yarom and Naomi Benger]
1453 *) TLS pad extension: draft-agl-tls-padding-03
1455 Workaround for the "TLS hang bug" (see FAQ and PR#2771): if the
1456 TLS client Hello record length value would otherwise be > 255 and
1457 less that 512 pad with a dummy extension containing zeroes so it
1458 is at least 512 bytes long.
1460 [Adam Langley, Steve Henson]
1462 Changes between 1.0.1e and 1.0.1f [6 Jan 2014]
1464 *) Fix for TLS record tampering bug. A carefully crafted invalid
1465 handshake could crash OpenSSL with a NULL pointer exception.
1466 Thanks to Anton Johansson for reporting this issues.
1469 *) Keep original DTLS digest and encryption contexts in retransmission
1470 structures so we can use the previous session parameters if they need
1471 to be resent. (CVE-2013-6450)
1474 *) Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which
1475 avoids preferring ECDHE-ECDSA ciphers when the client appears to be
1476 Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for
1477 several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug
1478 is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing
1479 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer.
1480 [Rob Stradling, Adam Langley]
1482 Changes between 1.0.1d and 1.0.1e [11 Feb 2013]
1484 *) Correct fix for CVE-2013-0169. The original didn't work on AES-NI
1485 supporting platforms or when small records were transferred.
1486 [Andy Polyakov, Steve Henson]
1488 Changes between 1.0.1c and 1.0.1d [5 Feb 2013]
1490 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
1492 This addresses the flaw in CBC record processing discovered by
1493 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
1494 at: http://www.isg.rhul.ac.uk/tls/
1496 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
1497 Security Group at Royal Holloway, University of London
1498 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
1499 Emilia Käsper for the initial patch.
1501 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
1503 *) Fix flaw in AESNI handling of TLS 1.2 and 1.1 records for CBC mode
1504 ciphersuites which can be exploited in a denial of service attack.
1505 Thanks go to and to Adam Langley <agl@chromium.org> for discovering
1506 and detecting this bug and to Wolfgang Ettlinger
1507 <wolfgang.ettlinger@gmail.com> for independently discovering this issue.
1511 *) Return an error when checking OCSP signatures when key is NULL.
1512 This fixes a DoS attack. (CVE-2013-0166)
1515 *) Make openssl verify return errors.
1516 [Chris Palmer <palmer@google.com> and Ben Laurie]
1518 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
1519 the right response is stapled. Also change SSL_get_certificate()
1520 so it returns the certificate actually sent.
1521 See http://rt.openssl.org/Ticket/Display.html?id=2836.
1522 [Rob Stradling <rob.stradling@comodo.com>]
1524 *) Fix possible deadlock when decoding public keys.
1527 *) Don't use TLS 1.0 record version number in initial client hello
1531 Changes between 1.0.1b and 1.0.1c [10 May 2012]
1533 *) Sanity check record length before skipping explicit IV in TLS
1534 1.2, 1.1 and DTLS to fix DoS attack.
1536 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
1537 fuzzing as a service testing platform.
1541 *) Initialise tkeylen properly when encrypting CMS messages.
1542 Thanks to Solar Designer of Openwall for reporting this issue.
1545 *) In FIPS mode don't try to use composite ciphers as they are not
1549 Changes between 1.0.1a and 1.0.1b [26 Apr 2012]
1551 *) OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and
1552 1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately
1553 mean any application compiled against OpenSSL 1.0.0 headers setting
1554 SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disablng
1555 TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to
1556 0x10000000L Any application which was previously compiled against
1557 OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1
1558 will need to be recompiled as a result. Letting be results in
1559 inability to disable specifically TLS 1.1 and in client context,
1560 in unlike event, limit maximum offered version to TLS 1.0 [see below].
1563 *) In order to ensure interoperabilty SSL_OP_NO_protocolX does not
1564 disable just protocol X, but all protocols above X *if* there are
1565 protocols *below* X still enabled. In more practical terms it means
1566 that if application wants to disable TLS1.0 in favor of TLS1.1 and
1567 above, it's not sufficient to pass SSL_OP_NO_TLSv1, one has to pass
1568 SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2. This applies to
1572 Changes between 1.0.1 and 1.0.1a [19 Apr 2012]
1574 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
1575 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
1576 in CRYPTO_realloc_clean.
1578 Thanks to Tavis Ormandy, Google Security Team, for discovering this
1579 issue and to Adam Langley <agl@chromium.org> for fixing it.
1581 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
1583 *) Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections.
1586 *) Workarounds for some broken servers that "hang" if a client hello
1587 record length exceeds 255 bytes.
1589 1. Do not use record version number > TLS 1.0 in initial client
1590 hello: some (but not all) hanging servers will now work.
1591 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate
1592 the number of ciphers sent in the client hello. This should be
1593 set to an even number, such as 50, for example by passing:
1594 -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure.
1595 Most broken servers should now work.
1596 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable
1597 TLS 1.2 client support entirely.
1600 *) Fix SEGV in Vector Permutation AES module observed in OpenSSH.
1603 Changes between 1.0.0h and 1.0.1 [14 Mar 2012]
1605 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET
1606 STRING form instead of a DigestInfo.
1609 *) The format used for MDC2 RSA signatures is inconsistent between EVP
1610 and the RSA_sign/RSA_verify functions. This was made more apparent when
1611 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
1612 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
1613 the correct format in RSA_verify so both forms transparently work.
1616 *) Some servers which support TLS 1.0 can choke if we initially indicate
1617 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
1618 encrypted premaster secret. As a workaround use the maximum permitted
1619 client version in client hello, this should keep such servers happy
1620 and still work with previous versions of OpenSSL.
1623 *) Add support for TLS/DTLS heartbeats.
1624 [Robin Seggelmann <seggelmann@fh-muenster.de>]
1626 *) Add support for SCTP.
1627 [Robin Seggelmann <seggelmann@fh-muenster.de>]
1629 *) Improved PRNG seeding for VOS.
1630 [Paul Green <Paul.Green@stratus.com>]
1632 *) Extensive assembler packs updates, most notably:
1634 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
1635 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
1636 - x86_64: bit-sliced AES implementation;
1637 - ARM: NEON support, contemporary platforms optimizations;
1638 - s390x: z196 support;
1639 - *: GHASH and GF(2^m) multiplication implementations;
1643 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
1644 (removal of unnecessary code)
1645 [Peter Sylvester <peter.sylvester@edelweb.fr>]
1647 *) Add TLS key material exporter from RFC 5705.
1650 *) Add DTLS-SRTP negotiation from RFC 5764.
1653 *) Add Next Protocol Negotiation,
1654 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
1655 disabled with a no-npn flag to config or Configure. Code donated
1657 [Adam Langley <agl@google.com> and Ben Laurie]
1659 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
1660 NIST-P256, NIST-P521, with constant-time single point multiplication on
1661 typical inputs. Compiler support for the nonstandard type __uint128_t is
1662 required to use this (present in gcc 4.4 and later, for 64-bit builds).
1663 Code made available under Apache License version 2.0.
1665 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
1666 line to include this in your build of OpenSSL, and run "make depend" (or
1667 "make update"). This enables the following EC_METHODs:
1669 EC_GFp_nistp224_method()
1670 EC_GFp_nistp256_method()
1671 EC_GFp_nistp521_method()
1673 EC_GROUP_new_by_curve_name() will automatically use these (while
1674 EC_GROUP_new_curve_GFp() currently prefers the more flexible
1676 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
1678 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
1679 all platforms. Move ssize_t definition from e_os.h to the public
1680 header file e_os2.h as it now appears in public header file cms.h
1683 *) New -sigopt option to the ca, req and x509 utilities. Additional
1684 signature parameters can be passed using this option and in
1688 *) Add RSA PSS signing function. This will generate and set the
1689 appropriate AlgorithmIdentifiers for PSS based on those in the
1690 corresponding EVP_MD_CTX structure. No application support yet.
1693 *) Support for companion algorithm specific ASN1 signing routines.
1694 New function ASN1_item_sign_ctx() signs a pre-initialised
1695 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
1696 the appropriate parameters.
1699 *) Add new algorithm specific ASN1 verification initialisation function
1700 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
1701 handling will be the same no matter what EVP_PKEY_METHOD is used.
1702 Add a PSS handler to support verification of PSS signatures: checked
1703 against a number of sample certificates.
1706 *) Add signature printing for PSS. Add PSS OIDs.
1707 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
1709 *) Add algorithm specific signature printing. An individual ASN1 method
1710 can now print out signatures instead of the standard hex dump.
1712 More complex signatures (e.g. PSS) can print out more meaningful
1713 information. Include DSA version that prints out the signature
1717 *) Password based recipient info support for CMS library: implementing
1721 *) Split password based encryption into PBES2 and PBKDF2 functions. This
1722 neatly separates the code into cipher and PBE sections and is required
1723 for some algorithms that split PBES2 into separate pieces (such as
1724 password based CMS).
1727 *) Session-handling fixes:
1728 - Fix handling of connections that are resuming with a session ID,
1729 but also support Session Tickets.
1730 - Fix a bug that suppressed issuing of a new ticket if the client
1731 presented a ticket with an expired session.
1732 - Try to set the ticket lifetime hint to something reasonable.
1733 - Make tickets shorter by excluding irrelevant information.
1734 - On the client side, don't ignore renewed tickets.
1735 [Adam Langley, Bodo Moeller (Google)]
1737 *) Fix PSK session representation.
1740 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
1742 This work was sponsored by Intel.
1745 *) Add GCM support to TLS library. Some custom code is needed to split
1746 the IV between the fixed (from PRF) and explicit (from TLS record)
1747 portions. This adds all GCM ciphersuites supported by RFC5288 and
1748 RFC5289. Generalise some AES* cipherstrings to include GCM and
1749 add a special AESGCM string for GCM only.
1752 *) Expand range of ctrls for AES GCM. Permit setting invocation
1753 field on decrypt and retrieval of invocation field only on encrypt.
1756 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
1757 As required by RFC5289 these ciphersuites cannot be used if for
1758 versions of TLS earlier than 1.2.
1761 *) For FIPS capable OpenSSL interpret a NULL default public key method
1762 as unset and return the appropriate default but do *not* set the default.
1763 This means we can return the appropriate method in applications that
1764 switch between FIPS and non-FIPS modes.
1767 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
1768 ENGINE is used then we cannot handle that in the FIPS module so we
1769 keep original code iff non-FIPS operations are allowed.
1772 *) Add -attime option to openssl utilities.
1773 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
1775 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
1778 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
1779 FIPS EC methods unconditionally for now.
1782 *) New build option no-ec2m to disable characteristic 2 code.
1785 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
1786 all cases can be covered as some introduce binary incompatibilities.
1789 *) Redirect RSA operations to FIPS module including keygen,
1790 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
1793 *) Add similar low level API blocking to ciphers.
1796 *) Low level digest APIs are not approved in FIPS mode: any attempt
1797 to use these will cause a fatal error. Applications that *really* want
1798 to use them can use the private_* version instead.
1801 *) Redirect cipher operations to FIPS module for FIPS builds.
1804 *) Redirect digest operations to FIPS module for FIPS builds.
1807 *) Update build system to add "fips" flag which will link in fipscanister.o
1808 for static and shared library builds embedding a signature if needed.
1811 *) Output TLS supported curves in preference order instead of numerical
1812 order. This is currently hardcoded for the highest order curves first.
1813 This should be configurable so applications can judge speed vs strength.
1816 *) Add TLS v1.2 server support for client authentication.
1819 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
1823 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
1824 FIPS modules versions.
1827 *) Add TLS v1.2 client side support for client authentication. Keep cache
1828 of handshake records longer as we don't know the hash algorithm to use
1829 until after the certificate request message is received.
1832 *) Initial TLS v1.2 client support. Add a default signature algorithms
1833 extension including all the algorithms we support. Parse new signature
1834 format in client key exchange. Relax some ECC signing restrictions for
1835 TLS v1.2 as indicated in RFC5246.
1838 *) Add server support for TLS v1.2 signature algorithms extension. Switch
1839 to new signature format when needed using client digest preference.
1840 All server ciphersuites should now work correctly in TLS v1.2. No client
1841 support yet and no support for client certificates.
1844 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
1845 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
1846 ciphersuites. At present only RSA key exchange ciphersuites work with
1847 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
1848 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
1849 and version checking.
1852 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
1853 with this defined it will not be affected by any changes to ssl internal
1854 structures. Add several utility functions to allow openssl application
1855 to work with OPENSSL_NO_SSL_INTERN defined.
1859 [Tom Wu <tjw@cs.stanford.edu> and Ben Laurie]
1861 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
1864 *) Permit abbreviated handshakes when renegotiating using the function
1865 SSL_renegotiate_abbreviated().
1866 [Robin Seggelmann <seggelmann@fh-muenster.de>]
1868 *) Add call to ENGINE_register_all_complete() to
1869 ENGINE_load_builtin_engines(), so some implementations get used
1870 automatically instead of needing explicit application support.
1873 *) Add support for TLS key exporter as described in RFC5705.
1874 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
1876 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
1877 a few changes are required:
1879 Add SSL_OP_NO_TLSv1_1 flag.
1880 Add TLSv1_1 methods.
1881 Update version checking logic to handle version 1.1.
1882 Add explicit IV handling (ported from DTLS code).
1883 Add command line options to s_client/s_server.
1886 Changes between 1.0.0g and 1.0.0h [12 Mar 2012]
1888 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
1889 in CMS and PKCS7 code. When RSA decryption fails use a random key for
1890 content decryption and always return the same error. Note: this attack
1891 needs on average 2^20 messages so it only affects automated senders. The
1892 old behaviour can be reenabled in the CMS code by setting the
1893 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
1894 an MMA defence is not necessary.
1895 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
1896 this issue. (CVE-2012-0884)
1899 *) Fix CVE-2011-4619: make sure we really are receiving a
1900 client hello before rejecting multiple SGC restarts. Thanks to
1901 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
1904 Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
1906 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
1907 Thanks to Antonio Martin, Enterprise Secure Access Research and
1908 Development, Cisco Systems, Inc. for discovering this bug and
1909 preparing a fix. (CVE-2012-0050)
1912 Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
1914 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
1915 of the Vaudenay padding oracle attack on CBC mode encryption
1916 which enables an efficient plaintext recovery attack against
1917 the OpenSSL implementation of DTLS. Their attack exploits timing
1918 differences arising during decryption processing. A research
1919 paper describing this attack can be found at:
1920 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
1921 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
1922 Security Group at Royal Holloway, University of London
1923 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
1924 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
1925 for preparing the fix. (CVE-2011-4108)
1926 [Robin Seggelmann, Michael Tuexen]
1928 *) Clear bytes used for block padding of SSL 3.0 records.
1930 [Adam Langley (Google)]
1932 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
1933 Kadianakis <desnacked@gmail.com> for discovering this issue and
1934 Adam Langley for preparing the fix. (CVE-2011-4619)
1935 [Adam Langley (Google)]
1937 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
1938 [Andrey Kulikov <amdeich@gmail.com>]
1940 *) Prevent malformed RFC3779 data triggering an assertion failure.
1941 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
1942 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
1943 [Rob Austein <sra@hactrn.net>]
1945 *) Improved PRNG seeding for VOS.
1946 [Paul Green <Paul.Green@stratus.com>]
1948 *) Fix ssl_ciph.c set-up race.
1949 [Adam Langley (Google)]
1951 *) Fix spurious failures in ecdsatest.c.
1952 [Emilia Käsper (Google)]
1954 *) Fix the BIO_f_buffer() implementation (which was mixing different
1955 interpretations of the '..._len' fields).
1956 [Adam Langley (Google)]
1958 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
1959 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
1960 threads won't reuse the same blinding coefficients.
1962 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
1963 lock to call BN_BLINDING_invert_ex, and avoids one use of
1964 BN_BLINDING_update for each BN_BLINDING structure (previously,
1965 the last update always remained unused).
1966 [Emilia Käsper (Google)]
1968 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
1969 [Bob Buckholz (Google)]
1971 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
1973 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
1974 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
1975 [Kaspar Brand <ossl@velox.ch>]
1977 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
1978 for multi-threaded use of ECDH. (CVE-2011-3210)
1979 [Adam Langley (Google)]
1981 *) Fix x509_name_ex_d2i memory leak on bad inputs.
1984 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
1985 signature public key algorithm by using OID xref utilities instead.
1986 Before this you could only use some ECC ciphersuites with SHA1 only.
1989 *) Add protection against ECDSA timing attacks as mentioned in the paper
1990 by Billy Bob Brumley and Nicola Tuveri, see:
1992 http://eprint.iacr.org/2011/232.pdf
1994 [Billy Bob Brumley and Nicola Tuveri]
1996 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
1998 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
1999 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
2001 *) Fix bug in string printing code: if *any* escaping is enabled we must
2002 escape the escape character (backslash) or the resulting string is
2006 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
2008 *) Disable code workaround for ancient and obsolete Netscape browsers
2009 and servers: an attacker can use it in a ciphersuite downgrade attack.
2010 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
2013 *) Fixed J-PAKE implementation error, originally discovered by
2014 Sebastien Martini, further info and confirmation from Stefan
2015 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
2018 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
2020 *) Fix extension code to avoid race conditions which can result in a buffer
2021 overrun vulnerability: resumed sessions must not be modified as they can
2022 be shared by multiple threads. CVE-2010-3864
2025 *) Fix WIN32 build system to correctly link an ENGINE directory into
2029 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
2031 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
2033 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
2035 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
2037 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
2038 context. The operation can be customised via the ctrl mechanism in
2039 case ENGINEs want to include additional functionality.
2042 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
2045 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
2046 output hashes compatible with older versions of OpenSSL.
2047 [Willy Weisz <weisz@vcpc.univie.ac.at>]
2049 *) Fix compression algorithm handling: if resuming a session use the
2050 compression algorithm of the resumed session instead of determining
2051 it from client hello again. Don't allow server to change algorithm.
2054 *) Add load_crls() function to apps tidying load_certs() too. Add option
2055 to verify utility to allow additional CRLs to be included.
2058 *) Update OCSP request code to permit adding custom headers to the request:
2059 some responders need this.
2062 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
2064 [Julia Lawall <julia@diku.dk>]
2066 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
2067 needlessly dereferenced structures, used obsolete functions and
2068 didn't handle all updated verify codes correctly.
2071 *) Disable MD2 in the default configuration.
2074 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
2075 indicate the initial BIO being pushed or popped. This makes it possible
2076 to determine whether the BIO is the one explicitly called or as a result
2077 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
2078 it handles reference counts correctly and doesn't zero out the I/O bio
2079 when it is not being explicitly popped. WARNING: applications which
2080 included workarounds for the old buggy behaviour will need to be modified
2081 or they could free up already freed BIOs.
2084 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
2085 renaming to all platforms (within the 0.9.8 branch, this was
2086 done conditionally on Netware platforms to avoid a name clash).
2087 [Guenter <lists@gknw.net>]
2089 *) Add ECDHE and PSK support to DTLS.
2090 [Michael Tuexen <tuexen@fh-muenster.de>]
2092 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
2096 *) Add "missing" function EVP_MD_flags() (without this the only way to
2097 retrieve a digest flags is by accessing the structure directly. Update
2098 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
2099 or cipher is registered as in the "from" argument. Print out all
2100 registered digests in the dgst usage message instead of manually
2101 attempting to work them out.
2104 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
2105 this allows the use of compression and extensions. Change default cipher
2106 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
2107 by default unless an application cipher string requests it.
2110 *) Alter match criteria in PKCS12_parse(). It used to try to use local
2111 key ids to find matching certificates and keys but some PKCS#12 files
2112 don't follow the (somewhat unwritten) rules and this strategy fails.
2113 Now just gather all certificates together and the first private key
2114 then look for the first certificate that matches the key.
2117 *) Support use of registered digest and cipher names for dgst and cipher
2118 commands instead of having to add each one as a special case. So now
2125 openssl dgst -sha256 foo
2127 and this works for ENGINE based algorithms too.
2131 *) Update Gost ENGINE to support parameter files.
2132 [Victor B. Wagner <vitus@cryptocom.ru>]
2134 *) Support GeneralizedTime in ca utility.
2135 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
2137 *) Enhance the hash format used for certificate directory links. The new
2138 form uses the canonical encoding (meaning equivalent names will work
2139 even if they aren't identical) and uses SHA1 instead of MD5. This form
2140 is incompatible with the older format and as a result c_rehash should
2141 be used to rebuild symbolic links.
2144 *) Make PKCS#8 the default write format for private keys, replacing the
2145 traditional format. This form is standardised, more secure and doesn't
2146 include an implicit MD5 dependency.
2149 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
2150 committed to OpenSSL should pass this lot as a minimum.
2153 *) Add session ticket override functionality for use by EAP-FAST.
2154 [Jouni Malinen <j@w1.fi>]
2156 *) Modify HMAC functions to return a value. Since these can be implemented
2157 in an ENGINE errors can occur.
2160 *) Type-checked OBJ_bsearch_ex.
2163 *) Type-checked OBJ_bsearch. Also some constification necessitated
2164 by type-checking. Still to come: TXT_DB, bsearch(?),
2165 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
2169 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
2170 seconds to a tm structure directly, instead of going through OS
2171 specific date routines. This avoids any issues with OS routines such
2172 as the year 2038 bug. New *_adj() functions for ASN1 time structures
2173 and X509_time_adj_ex() to cover the extended range. The existing
2174 X509_time_adj() is still usable and will no longer have any date issues.
2177 *) Delta CRL support. New use deltas option which will attempt to locate
2178 and search any appropriate delta CRLs available.
2180 This work was sponsored by Google.
2183 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
2184 code and add additional score elements. Validate alternate CRL paths
2185 as part of the CRL checking and indicate a new error "CRL path validation
2186 error" in this case. Applications wanting additional details can use
2187 the verify callback and check the new "parent" field. If this is not
2188 NULL CRL path validation is taking place. Existing applications wont
2189 see this because it requires extended CRL support which is off by
2192 This work was sponsored by Google.
2195 *) Support for freshest CRL extension.
2197 This work was sponsored by Google.
2200 *) Initial indirect CRL support. Currently only supported in the CRLs
2201 passed directly and not via lookup. Process certificate issuer
2202 CRL entry extension and lookup CRL entries by bother issuer name
2203 and serial number. Check and process CRL issuer entry in IDP extension.
2205 This work was sponsored by Google.
2208 *) Add support for distinct certificate and CRL paths. The CRL issuer
2209 certificate is validated separately in this case. Only enabled if
2210 an extended CRL support flag is set: this flag will enable additional
2211 CRL functionality in future.
2213 This work was sponsored by Google.
2216 *) Add support for policy mappings extension.
2218 This work was sponsored by Google.
2221 *) Fixes to pathlength constraint, self issued certificate handling,
2222 policy processing to align with RFC3280 and PKITS tests.
2224 This work was sponsored by Google.
2227 *) Support for name constraints certificate extension. DN, email, DNS
2228 and URI types are currently supported.
2230 This work was sponsored by Google.
2233 *) To cater for systems that provide a pointer-based thread ID rather
2234 than numeric, deprecate the current numeric thread ID mechanism and
2235 replace it with a structure and associated callback type. This
2236 mechanism allows a numeric "hash" to be extracted from a thread ID in
2237 either case, and on platforms where pointers are larger than 'long',
2238 mixing is done to help ensure the numeric 'hash' is usable even if it
2239 can't be guaranteed unique. The default mechanism is to use "&errno"
2240 as a pointer-based thread ID to distinguish between threads.
2242 Applications that want to provide their own thread IDs should now use
2243 CRYPTO_THREADID_set_callback() to register a callback that will call
2244 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
2246 Note that ERR_remove_state() is now deprecated, because it is tied
2247 to the assumption that thread IDs are numeric. ERR_remove_state(0)
2248 to free the current thread's error state should be replaced by
2249 ERR_remove_thread_state(NULL).
2251 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
2252 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
2253 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
2254 application was previously providing a numeric thread callback that
2255 was inappropriate for distinguishing threads, then uniqueness might
2256 have been obtained with &errno that happened immediately in the
2257 intermediate development versions of OpenSSL; this is no longer the
2258 case, the numeric thread callback will now override the automatic use
2260 [Geoff Thorpe, with help from Bodo Moeller]
2262 *) Initial support for different CRL issuing certificates. This covers a
2263 simple case where the self issued certificates in the chain exist and
2264 the real CRL issuer is higher in the existing chain.
2266 This work was sponsored by Google.
2269 *) Removed effectively defunct crypto/store from the build.
2272 *) Revamp of STACK to provide stronger type-checking. Still to come:
2273 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
2274 ASN1_STRING, CONF_VALUE.
2277 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
2278 RAM on SSL connections. This option can save about 34k per idle SSL.
2281 *) Revamp of LHASH to provide stronger type-checking. Still to come:
2282 STACK, TXT_DB, bsearch, qsort.
2285 *) Initial support for Cryptographic Message Syntax (aka CMS) based
2286 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
2287 support for data, signedData, compressedData, digestedData and
2288 encryptedData, envelopedData types included. Scripts to check against
2289 RFC4134 examples draft and interop and consistency checks of many
2290 content types and variants.
2293 *) Add options to enc utility to support use of zlib compression BIO.
2296 *) Extend mk1mf to support importing of options and assembly language
2297 files from Configure script, currently only included in VC-WIN32.
2298 The assembly language rules can now optionally generate the source
2299 files from the associated perl scripts.
2302 *) Implement remaining functionality needed to support GOST ciphersuites.
2303 Interop testing has been performed using CryptoPro implementations.
2304 [Victor B. Wagner <vitus@cryptocom.ru>]
2306 *) s390x assembler pack.
2309 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
2313 *) Implement Opaque PRF Input TLS extension as specified in
2314 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
2315 official specification yet and no extension type assignment by
2316 IANA exists, this extension (for now) will have to be explicitly
2317 enabled when building OpenSSL by providing the extension number
2318 to use. For example, specify an option
2320 -DTLSEXT_TYPE_opaque_prf_input=0x9527
2322 to the "config" or "Configure" script to enable the extension,
2323 assuming extension number 0x9527 (which is a completely arbitrary
2324 and unofficial assignment based on the MD5 hash of the Internet
2325 Draft). Note that by doing so, you potentially lose
2326 interoperability with other TLS implementations since these might
2327 be using the same extension number for other purposes.
2329 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
2330 opaque PRF input value to use in the handshake. This will create
2331 an interal copy of the length-'len' string at 'src', and will
2332 return non-zero for success.
2334 To get more control and flexibility, provide a callback function
2337 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
2338 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
2342 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
2345 Callback function 'cb' will be called in handshakes, and is
2346 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
2347 Argument 'arg' is for application purposes (the value as given to
2348 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
2349 be provided to the callback function). The callback function
2350 has to return non-zero to report success: usually 1 to use opaque
2351 PRF input just if possible, or 2 to enforce use of the opaque PRF
2352 input. In the latter case, the library will abort the handshake
2353 if opaque PRF input is not successfully negotiated.
2355 Arguments 'peerinput' and 'len' given to the callback function
2356 will always be NULL and 0 in the case of a client. A server will
2357 see the client's opaque PRF input through these variables if
2358 available (NULL and 0 otherwise). Note that if the server
2359 provides an opaque PRF input, the length must be the same as the
2360 length of the client's opaque PRF input.
2362 Note that the callback function will only be called when creating
2363 a new session (session resumption can resume whatever was
2364 previously negotiated), and will not be called in SSL 2.0
2365 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
2366 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
2367 for applications that need to enforce opaque PRF input.
2371 *) Update ssl code to support digests other than SHA1+MD5 for handshake
2374 [Victor B. Wagner <vitus@cryptocom.ru>]
2376 *) Add RFC4507 support to OpenSSL. This includes the corrections in
2377 RFC4507bis. The encrypted ticket format is an encrypted encoded
2378 SSL_SESSION structure, that way new session features are automatically
2381 If a client application caches session in an SSL_SESSION structure
2382 support is transparent because tickets are now stored in the encoded
2385 The SSL_CTX structure automatically generates keys for ticket
2386 protection in servers so again support should be possible
2387 with no application modification.
2389 If a client or server wishes to disable RFC4507 support then the option
2390 SSL_OP_NO_TICKET can be set.
2392 Add a TLS extension debugging callback to allow the contents of any client
2393 or server extensions to be examined.
2395 This work was sponsored by Google.
2398 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
2399 OpenSSL should now compile cleanly on gcc 4.2
2400 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
2402 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
2403 support including streaming MAC support: this is required for GOST
2404 ciphersuite support.
2405 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
2407 *) Add option -stream to use PKCS#7 streaming in smime utility. New
2408 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
2409 to output in BER and PEM format.
2412 *) Experimental support for use of HMAC via EVP_PKEY interface. This
2413 allows HMAC to be handled via the EVP_DigestSign*() interface. The
2414 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
2415 ENGINE support for HMAC keys which are unextractable. New -mac and
2416 -macopt options to dgst utility.
2419 *) New option -sigopt to dgst utility. Update dgst to use
2420 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
2421 alternative signing paramaters such as X9.31 or PSS in the dgst
2425 *) Change ssl_cipher_apply_rule(), the internal function that does
2426 the work each time a ciphersuite string requests enabling
2427 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
2428 removing ("!foo+bar") a class of ciphersuites: Now it maintains
2429 the order of disabled ciphersuites such that those ciphersuites
2430 that most recently went from enabled to disabled not only stay
2431 in order with respect to each other, but also have higher priority
2432 than other disabled ciphersuites the next time ciphersuites are
2435 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
2436 the same ciphersuites as with "HIGH" alone, but in a specific
2437 order where the PSK ciphersuites come first (since they are the
2438 most recently disabled ciphersuites when "HIGH" is parsed).
2440 Also, change ssl_create_cipher_list() (using this new
2441 funcionality) such that between otherwise identical
2442 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
2446 *) Change ssl_create_cipher_list() so that it automatically
2447 arranges the ciphersuites in reasonable order before starting
2448 to process the rule string. Thus, the definition for "DEFAULT"
2449 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
2450 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
2451 This makes it much easier to arrive at a reasonable default order
2452 in applications for which anonymous ciphers are OK (meaning
2453 that you can't actually use DEFAULT).
2454 [Bodo Moeller; suggested by Victor Duchovni]
2456 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
2457 processing) into multiple integers instead of setting
2458 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
2459 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
2460 (These masks as well as the individual bit definitions are hidden
2461 away into the non-exported interface ssl/ssl_locl.h, so this
2462 change to the definition of the SSL_CIPHER structure shouldn't
2463 affect applications.) This give us more bits for each of these
2464 categories, so there is no longer a need to coagulate AES128 and
2465 AES256 into a single algorithm bit, and to coagulate Camellia128
2466 and Camellia256 into a single algorithm bit, which has led to all
2469 Thus, among other things, the kludge introduced in 0.9.7m and
2470 0.9.8e for masking out AES256 independently of AES128 or masking
2471 out Camellia256 independently of AES256 is not needed here in 0.9.9.
2473 With the change, we also introduce new ciphersuite aliases that
2474 so far were missing: "AES128", "AES256", "CAMELLIA128", and
2478 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
2479 Use the leftmost N bytes of the signature input if the input is
2480 larger than the prime q (with N being the size in bytes of q).
2483 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
2484 it yet and it is largely untested.
2487 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
2490 *) Initial incomplete changes to avoid need for function casts in OpenSSL
2491 some compilers (gcc 4.2 and later) reject their use. Safestack is
2492 reimplemented. Update ASN1 to avoid use of legacy functions.
2495 *) Win32/64 targets are linked with Winsock2.
2498 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
2499 to external functions. This can be used to increase CRL handling
2500 efficiency especially when CRLs are very large by (for example) storing
2501 the CRL revoked certificates in a database.
2504 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
2505 new CRLs added to a directory can be used. New command line option
2506 -verify_return_error to s_client and s_server. This causes real errors
2507 to be returned by the verify callback instead of carrying on no matter
2508 what. This reflects the way a "real world" verify callback would behave.
2511 *) GOST engine, supporting several GOST algorithms and public key formats.
2512 Kindly donated by Cryptocom.
2515 *) Partial support for Issuing Distribution Point CRL extension. CRLs
2516 partitioned by DP are handled but no indirect CRL or reason partitioning
2517 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
2518 selected via a scoring technique which handles IDP and AKID in CRLs.
2521 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
2522 will ultimately be used for all verify operations: this will remove the
2523 X509_STORE dependency on certificate verification and allow alternative
2524 lookup methods. X509_STORE based implementations of these two callbacks.
2527 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
2528 Modify get_crl() to find a valid (unexpired) CRL if possible.
2531 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
2532 this would be called X509_CRL_cmp() but that name is already used by
2533 a function that just compares CRL issuer names. Cache several CRL
2534 extensions in X509_CRL structure and cache CRLDP in X509.
2537 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
2538 this maps equivalent X509_NAME structures into a consistent structure.
2539 Name comparison can then be performed rapidly using memcmp().
2542 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
2546 *) Allow digests to supply their own micalg string for S/MIME type using
2547 the ctrl EVP_MD_CTRL_MICALG.
2550 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
2551 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
2552 ctrl. It can then customise the structure before and/or after signing
2556 *) New function OBJ_add_sigid() to allow application defined signature OIDs
2557 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
2558 to free up any added signature OIDs.
2561 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
2562 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
2563 digest and cipher tables. New options added to openssl utility:
2564 list-message-digest-algorithms and list-cipher-algorithms.
2567 *) Change the array representation of binary polynomials: the list
2568 of degrees of non-zero coefficients is now terminated with -1.
2569 Previously it was terminated with 0, which was also part of the
2570 value; thus, the array representation was not applicable to
2571 polynomials where t^0 has coefficient zero. This change makes
2572 the array representation useful in a more general context.
2575 *) Various modifications and fixes to SSL/TLS cipher string
2576 handling. For ECC, the code now distinguishes between fixed ECDH
2577 with RSA certificates on the one hand and with ECDSA certificates
2578 on the other hand, since these are separate ciphersuites. The
2579 unused code for Fortezza ciphersuites has been removed.
2581 For consistency with EDH, ephemeral ECDH is now called "EECDH"
2582 (not "ECDHE"). For consistency with the code for DH
2583 certificates, use of ECDH certificates is now considered ECDH
2584 authentication, not RSA or ECDSA authentication (the latter is
2585 merely the CA's signing algorithm and not actively used in the
2588 The temporary ciphersuite alias "ECCdraft" is no longer
2589 available, and ECC ciphersuites are no longer excluded from "ALL"
2590 and "DEFAULT". The following aliases now exist for RFC 4492
2591 ciphersuites, most of these by analogy with the DH case:
2593 kECDHr - ECDH cert, signed with RSA
2594 kECDHe - ECDH cert, signed with ECDSA
2595 kECDH - ECDH cert (signed with either RSA or ECDSA)
2596 kEECDH - ephemeral ECDH
2597 ECDH - ECDH cert or ephemeral ECDH
2603 AECDH - anonymous ECDH
2604 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
2608 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
2609 Use correct micalg parameters depending on digest(s) in signed message.
2612 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
2613 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
2616 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
2617 an engine to register a method. Add ENGINE lookups for methods and
2618 functional reference processing.
2621 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
2622 EVP_{Sign,Verify}* which allow an application to customise the signature
2626 *) New -resign option to smime utility. This adds one or more signers
2627 to an existing PKCS#7 signedData structure. Also -md option to use an
2628 alternative message digest algorithm for signing.
2631 *) Tidy up PKCS#7 routines and add new functions to make it easier to
2632 create PKCS7 structures containing multiple signers. Update smime
2633 application to support multiple signers.
2636 *) New -macalg option to pkcs12 utility to allow setting of an alternative
2640 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
2641 Reorganize PBE internals to lookup from a static table using NIDs,
2642 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
2643 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
2644 PRF which will be automatically used with PBES2.
2647 *) Replace the algorithm specific calls to generate keys in "req" with the
2651 *) Update PKCS#7 enveloped data routines to use new API. This is now
2652 supported by any public key method supporting the encrypt operation. A
2653 ctrl is added to allow the public key algorithm to examine or modify
2654 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
2658 *) Add a ctrl to asn1 method to allow a public key algorithm to express
2659 a default digest type to use. In most cases this will be SHA1 but some
2660 algorithms (such as GOST) need to specify an alternative digest. The
2661 return value indicates how strong the preference is 1 means optional and
2662 2 is mandatory (that is it is the only supported type). Modify
2663 ASN1_item_sign() to accept a NULL digest argument to indicate it should
2664 use the default md. Update openssl utilities to use the default digest
2665 type for signing if it is not explicitly indicated.
2668 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
2669 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
2670 signing method from the key type. This effectively removes the link
2671 between digests and public key types.
2674 *) Add an OID cross reference table and utility functions. Its purpose is to
2675 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
2676 rsaEncryption. This will allow some of the algorithm specific hackery
2677 needed to use the correct OID to be removed.
2680 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
2681 structures for PKCS7_sign(). They are now set up by the relevant public
2685 *) Add provisional EC pkey method with support for ECDSA and ECDH.
2688 *) Add support for key derivation (agreement) in the API, DH method and
2692 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
2693 public and private key formats. As a side effect these add additional
2694 command line functionality not previously available: DSA signatures can be
2695 generated and verified using pkeyutl and DH key support and generation in
2700 [Oliver Tappe <zooey@hirschkaefer.de>]
2702 *) New make target "install_html_docs" installs HTML renditions of the
2704 [Oliver Tappe <zooey@hirschkaefer.de>]
2706 *) New utility "genpkey" this is analogous to "genrsa" etc except it can
2707 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
2708 support key and parameter generation and add initial key generation
2709 functionality for RSA.
2712 *) Add functions for main EVP_PKEY_method operations. The undocumented
2713 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
2714 EVP_PKEY_{encrypt,decrypt}_old.
2717 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
2718 key API, doesn't do much yet.
2721 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
2722 public key algorithms. New option to openssl utility:
2723 "list-public-key-algorithms" to print out info.
2726 *) Implement the Supported Elliptic Curves Extension for
2727 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
2730 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
2731 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
2734 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
2735 utilities such as rsa, dsa, dsaparam etc except they process any key
2739 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
2740 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
2741 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
2745 *) Initial support for pluggable public key ASN1.
2746 De-spaghettify the public key ASN1 handling. Move public and private
2747 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
2748 algorithm specific handling to a single module within the relevant
2749 algorithm directory. Add functions to allow (near) opaque processing
2750 of public and private key structures.
2753 *) Implement the Supported Point Formats Extension for
2754 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
2757 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
2758 for the psk identity [hint] and the psk callback functions to the
2759 SSL_SESSION, SSL and SSL_CTX structure.
2762 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
2766 SSL_CTX_use_psk_identity_hint
2767 SSL_get_psk_identity_hint
2768 SSL_get_psk_identity
2769 SSL_use_psk_identity_hint
2771 [Mika Kousa and Pasi Eronen of Nokia Corporation]
2773 *) Add RFC 3161 compliant time stamp request creation, response generation
2774 and response verification functionality.
2775 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
2777 *) Add initial support for TLS extensions, specifically for the server_name
2778 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
2779 have new members for a host name. The SSL data structure has an
2780 additional member SSL_CTX *initial_ctx so that new sessions can be
2781 stored in that context to allow for session resumption, even after the
2782 SSL has been switched to a new SSL_CTX in reaction to a client's
2783 server_name extension.
2785 New functions (subject to change):
2787 SSL_get_servername()
2788 SSL_get_servername_type()
2791 New CTRL codes and macros (subject to change):
2793 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
2794 - SSL_CTX_set_tlsext_servername_callback()
2795 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
2796 - SSL_CTX_set_tlsext_servername_arg()
2797 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
2799 openssl s_client has a new '-servername ...' option.
2801 openssl s_server has new options '-servername_host ...', '-cert2 ...',
2802 '-key2 ...', '-servername_fatal' (subject to change). This allows
2803 testing the HostName extension for a specific single host name ('-cert'
2804 and '-key' remain fallbacks for handshakes without HostName
2805 negotiation). If the unrecognized_name alert has to be sent, this by
2806 default is a warning; it becomes fatal with the '-servername_fatal'
2809 [Peter Sylvester, Remy Allais, Christophe Renou]
2811 *) Whirlpool hash implementation is added.
2814 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
2815 bn(64,32). Because of instruction set limitations it doesn't have
2816 any negative impact on performance. This was done mostly in order
2817 to make it possible to share assembler modules, such as bn_mul_mont
2818 implementations, between 32- and 64-bit builds without hassle.
2821 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
2822 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
2826 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
2827 dedicated Montgomery multiplication procedure, is introduced.
2828 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
2829 "64-bit" performance on certain 32-bit targets.
2832 *) New option SSL_OP_NO_COMP to disable use of compression selectively
2833 in SSL structures. New SSL ctrl to set maximum send fragment size.
2834 Save memory by seeting the I/O buffer sizes dynamically instead of
2835 using the maximum available value.
2838 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
2839 in addition to the text details.
2842 *) Very, very preliminary EXPERIMENTAL support for printing of general
2843 ASN1 structures. This currently produces rather ugly output and doesn't
2844 handle several customised structures at all.
2847 *) Integrated support for PVK file format and some related formats such
2848 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
2849 these in the 'rsa' and 'dsa' utilities.
2852 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
2855 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
2856 place for the (very old) "NETSCAPE" format certificates which are now
2857 handled using new ASN1 code equivalents.
2860 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
2861 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
2862 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
2865 *) Modify CRL distribution points extension code to print out previously
2866 unsupported fields. Enhance extension setting code to allow setting of
2870 *) Add print and set support for Issuing Distribution Point CRL extension.
2873 *) Change 'Configure' script to enable Camellia by default.
2876 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
2878 *) When rejecting SSL/TLS records due to an incorrect version number, never
2879 update s->server with a new major version number. As of
2880 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
2881 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
2882 the previous behavior could result in a read attempt at NULL when
2883 receiving specific incorrect SSL/TLS records once record payload
2884 protection is active. (CVE-2010-0740)
2885 [Bodo Moeller, Adam Langley <agl@chromium.org>]
2887 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
2888 could be crashed if the relevant tables were not present (e.g. chrooted).
2889 [Tomas Hoger <thoger@redhat.com>]
2891 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
2893 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
2894 [Martin Olsson, Neel Mehta]
2896 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
2897 accommodate for stack sorting, always a write lock!).
2900 *) On some versions of WIN32 Heap32Next is very slow. This can cause
2901 excessive delays in the RAND_poll(): over a minute. As a workaround
2902 include a time check in the inner Heap32Next loop too.
2905 *) The code that handled flushing of data in SSL/TLS originally used the
2906 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
2907 the problem outlined in PR#1949. The fix suggested there however can
2908 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
2909 of Apache). So instead simplify the code to flush unconditionally.
2910 This should be fine since flushing with no data to flush is a no op.
2913 *) Handle TLS versions 2.0 and later properly and correctly use the
2914 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
2915 off ancient servers have a habit of sticking around for a while...
2918 *) Modify compression code so it frees up structures without using the
2919 ex_data callbacks. This works around a problem where some applications
2920 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
2921 restarting) then use compression (e.g. SSL with compression) later.
2922 This results in significant per-connection memory leaks and
2923 has caused some security issues including CVE-2008-1678 and
2927 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
2928 change when encrypting or decrypting.
2931 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
2932 connect and renegotiate with servers which do not support RI.
2933 Until RI is more widely deployed this option is enabled by default.
2936 *) Add "missing" ssl ctrls to clear options and mode.
2939 *) If client attempts to renegotiate and doesn't support RI respond with
2940 a no_renegotiation alert as required by RFC5746. Some renegotiating
2941 TLS clients will continue a connection gracefully when they receive
2942 the alert. Unfortunately OpenSSL mishandled this alert and would hang
2943 waiting for a server hello which it will never receive. Now we treat a
2944 received no_renegotiation alert as a fatal error. This is because
2945 applications requesting a renegotiation might well expect it to succeed
2946 and would have no code in place to handle the server denying it so the
2947 only safe thing to do is to terminate the connection.
2950 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
2951 peer supports secure renegotiation and 0 otherwise. Print out peer
2952 renegotiation support in s_client/s_server.
2955 *) Replace the highly broken and deprecated SPKAC certification method with
2956 the updated NID creation version. This should correctly handle UTF8.
2959 *) Implement RFC5746. Re-enable renegotiation but require the extension
2960 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
2961 turns out to be a bad idea. It has been replaced by
2962 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
2963 SSL_CTX_set_options(). This is really not recommended unless you
2964 know what you are doing.
2965 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
2967 *) Fixes to stateless session resumption handling. Use initial_ctx when
2968 issuing and attempting to decrypt tickets in case it has changed during
2969 servername handling. Use a non-zero length session ID when attempting
2970 stateless session resumption: this makes it possible to determine if
2971 a resumption has occurred immediately after receiving server hello
2972 (several places in OpenSSL subtly assume this) instead of later in
2976 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
2977 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
2978 fixes for a few places where the return code is not checked
2980 [Julia Lawall <julia@diku.dk>]
2982 *) Add --strict-warnings option to Configure script to include devteam
2983 warnings in other configurations.
2986 *) Add support for --libdir option and LIBDIR variable in makefiles. This
2987 makes it possible to install openssl libraries in locations which
2988 have names other than "lib", for example "/usr/lib64" which some
2990 [Steve Henson, based on patch from Jeremy Utley]
2992 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
2993 X690 8.9.12 and can produce some misleading textual output of OIDs.
2994 [Steve Henson, reported by Dan Kaminsky]
2996 *) Delete MD2 from algorithm tables. This follows the recommendation in
2997 several standards that it is not used in new applications due to
2998 several cryptographic weaknesses. For binary compatibility reasons
2999 the MD2 API is still compiled in by default.
3002 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
3006 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
3007 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
3009 [Guenter <lists@gknw.net>]
3011 *) Fix the server certificate chain building code to use X509_verify_cert(),
3012 it used to have an ad-hoc builder which was unable to cope with anything
3013 other than a simple chain.
3014 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
3016 *) Don't check self signed certificate signatures in X509_verify_cert()
3017 by default (a flag can override this): it just wastes time without
3018 adding any security. As a useful side effect self signed root CAs
3019 with non-FIPS digests are now usable in FIPS mode.
3022 *) In dtls1_process_out_of_seq_message() the check if the current message
3023 is already buffered was missing. For every new message was memory
3024 allocated, allowing an attacker to perform an denial of service attack
3025 with sending out of seq handshake messages until there is no memory
3026 left. Additionally every future messege was buffered, even if the
3027 sequence number made no sense and would be part of another handshake.
3028 So only messages with sequence numbers less than 10 in advance will be
3029 buffered. (CVE-2009-1378)
3030 [Robin Seggelmann, discovered by Daniel Mentz]
3032 *) Records are buffered if they arrive with a future epoch to be
3033 processed after finishing the corresponding handshake. There is
3034 currently no limitation to this buffer allowing an attacker to perform
3035 a DOS attack with sending records with future epochs until there is no
3036 memory left. This patch adds the pqueue_size() function to determine
3037 the size of a buffer and limits the record buffer to 100 entries.
3039 [Robin Seggelmann, discovered by Daniel Mentz]
3041 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
3042 parent structure is freed. (CVE-2009-1379)
3045 *) Handle non-blocking I/O properly in SSL_shutdown() call.
3046 [Darryl Miles <darryl-mailinglists@netbauds.net>]
3049 [Ilya O. <vrghost@gmail.com>]
3051 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
3053 *) Disable renegotiation completely - this fixes a severe security
3054 problem (CVE-2009-3555) at the cost of breaking all
3055 renegotiation. Renegotiation can be re-enabled by setting
3056 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
3057 run-time. This is really not recommended unless you know what
3061 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
3063 *) Don't set val to NULL when freeing up structures, it is freed up by
3064 underlying code. If sizeof(void *) > sizeof(long) this can result in
3065 zeroing past the valid field. (CVE-2009-0789)
3066 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
3068 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
3069 checked correctly. This would allow some invalid signed attributes to
3070 appear to verify correctly. (CVE-2009-0591)
3071 [Ivan Nestlerode <inestlerode@us.ibm.com>]
3073 *) Reject UniversalString and BMPString types with invalid lengths. This
3074 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
3075 a legal length. (CVE-2009-0590)
3078 *) Set S/MIME signing as the default purpose rather than setting it
3079 unconditionally. This allows applications to override it at the store
3083 *) Permit restricted recursion of ASN1 strings. This is needed in practice
3084 to handle some structures.
3087 *) Improve efficiency of mem_gets: don't search whole buffer each time
3089 [Jeremy Shapiro <jnshapir@us.ibm.com>]
3091 *) New -hex option for openssl rand.
3094 *) Print out UTF8String and NumericString when parsing ASN1.
3097 *) Support NumericString type for name components.
3100 *) Allow CC in the environment to override the automatically chosen
3101 compiler. Note that nothing is done to ensure flags work with the
3105 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
3107 *) Properly check EVP_VerifyFinal() and similar return values
3109 [Ben Laurie, Bodo Moeller, Google Security Team]
3111 *) Enable TLS extensions by default.
3114 *) Allow the CHIL engine to be loaded, whether the application is
3115 multithreaded or not. (This does not release the developer from the
3116 obligation to set up the dynamic locking callbacks.)
3117 [Sander Temme <sander@temme.net>]
3119 *) Use correct exit code if there is an error in dgst command.
3120 [Steve Henson; problem pointed out by Roland Dirlewanger]
3122 *) Tweak Configure so that you need to say "experimental-jpake" to enable
3123 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
3126 *) Add experimental JPAKE support, including demo authentication in
3127 s_client and s_server.
3130 *) Set the comparison function in v3_addr_canonize().
3131 [Rob Austein <sra@hactrn.net>]
3133 *) Add support for XMPP STARTTLS in s_client.
3134 [Philip Paeps <philip@freebsd.org>]
3136 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
3137 to ensure that even with this option, only ciphersuites in the
3138 server's preference list will be accepted. (Note that the option
3139 applies only when resuming a session, so the earlier behavior was
3140 just about the algorithm choice for symmetric cryptography.)
3143 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
3145 *) Fix NULL pointer dereference if a DTLS server received
3146 ChangeCipherSpec as first record (CVE-2009-1386).
3149 *) Fix a state transition in s3_srvr.c and d1_srvr.c
3150 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
3153 *) The fix in 0.9.8c that supposedly got rid of unsafe
3154 double-checked locking was incomplete for RSA blinding,
3155 addressing just one layer of what turns out to have been
3156 doubly unsafe triple-checked locking.
3158 So now fix this for real by retiring the MONT_HELPER macro
3159 in crypto/rsa/rsa_eay.c.
3161 [Bodo Moeller; problem pointed out by Marius Schilder]
3163 *) Various precautionary measures:
3165 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
3167 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
3168 (NB: This would require knowledge of the secret session ticket key
3169 to exploit, in which case you'd be SOL either way.)
3171 - Change bn_nist.c so that it will properly handle input BIGNUMs
3172 outside the expected range.
3174 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
3177 [Neel Mehta, Bodo Moeller]
3179 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
3180 the load fails. Useful for distros.
3181 [Ben Laurie and the FreeBSD team]
3183 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
3186 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
3189 *) Expand ENGINE to support engine supplied SSL client certificate functions.
3191 This work was sponsored by Logica.
3194 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
3195 keystores. Support for SSL/TLS client authentication too.
3196 Not compiled unless enable-capieng specified to Configure.
3198 This work was sponsored by Logica.
3201 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
3202 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
3203 attribute creation routines such as certifcate requests and PKCS#12
3207 Changes between 0.9.8g and 0.9.8h [28 May 2008]
3209 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
3210 handshake which could lead to a cilent crash as found using the
3211 Codenomicon TLS test suite (CVE-2008-1672)
3212 [Steve Henson, Mark Cox]
3214 *) Fix double free in TLS server name extensions which could lead to
3215 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
3218 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
3220 Clear the error queue to ensure that error entries left from
3221 older function calls do not interfere with the correct operation.
3222 [Lutz Jaenicke, Erik de Castro Lopo]
3224 *) Remove root CA certificates of commercial CAs:
3226 The OpenSSL project does not recommend any specific CA and does not
3227 have any policy with respect to including or excluding any CA.
3228 Therefore it does not make any sense to ship an arbitrary selection
3229 of root CA certificates with the OpenSSL software.
3232 *) RSA OAEP patches to fix two separate invalid memory reads.
3233 The first one involves inputs when 'lzero' is greater than
3234 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
3235 before the beginning of from). The second one involves inputs where
3236 the 'db' section contains nothing but zeroes (there is a one-byte
3237 invalid read after the end of 'db').
3238 [Ivan Nestlerode <inestlerode@us.ibm.com>]
3240 *) Partial backport from 0.9.9-dev:
3242 Introduce bn_mul_mont (dedicated Montgomery multiplication
3243 procedure) as a candidate for BIGNUM assembler implementation.
3244 While 0.9.9-dev uses assembler for various architectures, only
3245 x86_64 is available by default here in the 0.9.8 branch, and
3246 32-bit x86 is available through a compile-time setting.
3248 To try the 32-bit x86 assembler implementation, use Configure
3249 option "enable-montasm" (which exists only for this backport).
3251 As "enable-montasm" for 32-bit x86 disclaims code stability
3252 anyway, in this constellation we activate additional code
3253 backported from 0.9.9-dev for further performance improvements,
3254 namely BN_from_montgomery_word. (To enable this otherwise,
3255 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
3257 [Andy Polyakov (backport partially by Bodo Moeller)]
3259 *) Add TLS session ticket callback. This allows an application to set
3260 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
3261 values. This is useful for key rollover for example where several key
3262 sets may exist with different names.
3265 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
3266 This was broken until now in 0.9.8 releases, such that the only way
3267 a registered ENGINE could be used (assuming it initialises
3268 successfully on the host) was to explicitly set it as the default
3269 for the relevant algorithms. This is in contradiction with 0.9.7
3270 behaviour and the documentation. With this fix, when an ENGINE is
3271 registered into a given algorithm's table of implementations, the
3272 'uptodate' flag is reset so that auto-discovery will be used next
3273 time a new context for that algorithm attempts to select an
3275 [Ian Lister (tweaked by Geoff Thorpe)]
3277 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
3278 implemention in the following ways:
3280 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
3283 Lack of BER streaming support means one pass streaming processing is
3284 only supported if data is detached: setting the streaming flag is
3285 ignored for embedded content.
3287 CMS support is disabled by default and must be explicitly enabled
3288 with the enable-cms configuration option.
3291 *) Update the GMP engine glue to do direct copies between BIGNUM and
3292 mpz_t when openssl and GMP use the same limb size. Otherwise the
3293 existing "conversion via a text string export" trick is still used.
3294 [Paul Sheer <paulsheer@gmail.com>]
3296 *) Zlib compression BIO. This is a filter BIO which compressed and
3297 uncompresses any data passed through it.
3300 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
3301 RFC3394 compatible AES key wrapping.
3304 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
3305 sets string data without copying. X509_ALGOR_set0() and
3306 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
3307 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
3308 from an X509_ATTRIBUTE structure optionally checking it occurs only
3309 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
3313 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
3314 to get the expected BN_FLG_CONSTTIME behavior.
3315 [Bodo Moeller (Google)]
3319 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
3320 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
3321 - added some more tests to do_tests.pl
3322 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
3323 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
3324 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
3325 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
3326 - various changes to netware.pl to enable gcc-cross builds on Win32
3328 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
3329 - various changes to fix missing prototype warnings
3330 - fixed x86nasm.pl to create correct asm files for NASM COFF output
3331 - added AES, WHIRLPOOL and CPUID assembler code to build files
3332 - added missing AES assembler make rules to mk1mf.pl
3333 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
3334 [Guenter Knauf <eflash@gmx.net>]
3336 *) Implement certificate status request TLS extension defined in RFC3546.
3337 A client can set the appropriate parameters and receive the encoded
3338 OCSP response via a callback. A server can query the supplied parameters
3339 and set the encoded OCSP response in the callback. Add simplified examples
3340 to s_client and s_server.
3343 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
3345 *) Fix various bugs:
3346 + Binary incompatibility of ssl_ctx_st structure
3347 + DTLS interoperation with non-compliant servers
3348 + Don't call get_session_cb() without proposed session
3349 + Fix ia64 assembler code
3350 [Andy Polyakov, Steve Henson]
3352 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
3354 *) DTLS Handshake overhaul. There were longstanding issues with
3355 OpenSSL DTLS implementation, which were making it impossible for
3356 RFC 4347 compliant client to communicate with OpenSSL server.
3357 Unfortunately just fixing these incompatibilities would "cut off"
3358 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
3359 server keeps tolerating non RFC compliant syntax. The opposite is
3360 not true, 0.9.8f client can not communicate with earlier server.
3361 This update even addresses CVE-2007-4995.
3364 *) Changes to avoid need for function casts in OpenSSL: some compilers
3365 (gcc 4.2 and later) reject their use.
3366 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
3369 *) Add RFC4507 support to OpenSSL. This includes the corrections in
3370 RFC4507bis. The encrypted ticket format is an encrypted encoded
3371 SSL_SESSION structure, that way new session features are automatically
3374 If a client application caches session in an SSL_SESSION structure
3375 support is transparent because tickets are now stored in the encoded
3378 The SSL_CTX structure automatically generates keys for ticket
3379 protection in servers so again support should be possible
3380 with no application modification.
3382 If a client or server wishes to disable RFC4507 support then the option
3383 SSL_OP_NO_TICKET can be set.
3385 Add a TLS extension debugging callback to allow the contents of any client
3386 or server extensions to be examined.
3388 This work was sponsored by Google.
3391 *) Add initial support for TLS extensions, specifically for the server_name
3392 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
3393 have new members for a host name. The SSL data structure has an
3394 additional member SSL_CTX *initial_ctx so that new sessions can be
3395 stored in that context to allow for session resumption, even after the
3396 SSL has been switched to a new SSL_CTX in reaction to a client's
3397 server_name extension.
3399 New functions (subject to change):
3401 SSL_get_servername()
3402 SSL_get_servername_type()
3405 New CTRL codes and macros (subject to change):
3407 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
3408 - SSL_CTX_set_tlsext_servername_callback()
3409 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
3410 - SSL_CTX_set_tlsext_servername_arg()
3411 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
3413 openssl s_client has a new '-servername ...' option.
3415 openssl s_server has new options '-servername_host ...', '-cert2 ...',
3416 '-key2 ...', '-servername_fatal' (subject to change). This allows
3417 testing the HostName extension for a specific single host name ('-cert'
3418 and '-key' remain fallbacks for handshakes without HostName
3419 negotiation). If the unrecognized_name alert has to be sent, this by
3420 default is a warning; it becomes fatal with the '-servername_fatal'
3423 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
3425 *) Add AES and SSE2 assembly language support to VC++ build.
3428 *) Mitigate attack on final subtraction in Montgomery reduction.
3431 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
3432 (which previously caused an internal error).
3435 *) Squeeze another 10% out of IGE mode when in != out.
3438 *) AES IGE mode speedup.
3439 [Dean Gaudet (Google)]
3441 *) Add the Korean symmetric 128-bit cipher SEED (see
3442 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
3443 add SEED ciphersuites from RFC 4162:
3445 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
3446 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
3447 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
3448 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
3450 To minimize changes between patchlevels in the OpenSSL 0.9.8
3451 series, SEED remains excluded from compilation unless OpenSSL
3452 is configured with 'enable-seed'.
3453 [KISA, Bodo Moeller]
3455 *) Mitigate branch prediction attacks, which can be practical if a
3456 single processor is shared, allowing a spy process to extract
3457 information. For detailed background information, see
3458 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
3459 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
3460 and Necessary Software Countermeasures"). The core of the change
3461 are new versions BN_div_no_branch() and
3462 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
3463 respectively, which are slower, but avoid the security-relevant
3464 conditional branches. These are automatically called by BN_div()
3465 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
3466 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
3467 remove a conditional branch.
3469 BN_FLG_CONSTTIME is the new name for the previous
3470 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
3471 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
3472 in the exponent causes BN_mod_exp_mont() to use the alternative
3473 implementation in BN_mod_exp_mont_consttime().) The old name
3474 remains as a deprecated alias.
3476 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
3477 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
3478 constant-time implementations for more than just exponentiation.
3479 Here too the old name is kept as a deprecated alias.
3481 BN_BLINDING_new() will now use BN_dup() for the modulus so that
3482 the BN_BLINDING structure gets an independent copy of the
3483 modulus. This means that the previous "BIGNUM *m" argument to
3484 BN_BLINDING_new() and to BN_BLINDING_create_param() now
3485 essentially becomes "const BIGNUM *m", although we can't actually
3486 change this in the header file before 0.9.9. It allows
3487 RSA_setup_blinding() to use BN_with_flags() on the modulus to
3488 enable BN_FLG_CONSTTIME.
3490 [Matthew D Wood (Intel Corp)]
3492 *) In the SSL/TLS server implementation, be strict about session ID
3493 context matching (which matters if an application uses a single
3494 external cache for different purposes). Previously,
3495 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
3496 set. This did ensure strict client verification, but meant that,
3497 with applications using a single external cache for quite
3498 different requirements, clients could circumvent ciphersuite
3499 restrictions for a given session ID context by starting a session
3500 in a different context.
3503 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
3504 a ciphersuite string such as "DEFAULT:RSA" cannot enable
3505 authentication-only ciphersuites.
3508 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
3509 not complete and could lead to a possible single byte overflow
3510 (CVE-2007-5135) [Ben Laurie]
3512 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
3514 *) Since AES128 and AES256 (and similarly Camellia128 and
3515 Camellia256) share a single mask bit in the logic of
3516 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
3517 kludge to work properly if AES128 is available and AES256 isn't
3518 (or if Camellia128 is available and Camellia256 isn't).
3521 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
3522 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
3523 When a point or a seed is encoded in a BIT STRING, we need to
3524 prevent the removal of trailing zero bits to get the proper DER
3525 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
3526 of a NamedBitList, for which trailing 0 bits need to be removed.)
3529 *) Have SSL/TLS server implementation tolerate "mismatched" record
3530 protocol version while receiving ClientHello even if the
3531 ClientHello is fragmented. (The server can't insist on the
3532 particular protocol version it has chosen before the ServerHello
3533 message has informed the client about his choice.)
3536 *) Add RFC 3779 support.
3537 [Rob Austein for ARIN, Ben Laurie]
3539 *) Load error codes if they are not already present instead of using a
3540 static variable. This allows them to be cleanly unloaded and reloaded.
3541 Improve header file function name parsing.
3544 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
3545 or CAPABILITY handshake as required by RFCs.
3548 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
3550 *) Introduce limits to prevent malicious keys being able to
3551 cause a denial of service. (CVE-2006-2940)
3552 [Steve Henson, Bodo Moeller]
3554 *) Fix ASN.1 parsing of certain invalid structures that can result
3555 in a denial of service. (CVE-2006-2937) [Steve Henson]
3557 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
3558 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
3560 *) Fix SSL client code which could crash if connecting to a
3561 malicious SSLv2 server. (CVE-2006-4343)
3562 [Tavis Ormandy and Will Drewry, Google Security Team]
3564 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
3565 match only those. Before that, "AES256-SHA" would be interpreted
3566 as a pattern and match "AES128-SHA" too (since AES128-SHA got
3567 the same strength classification in 0.9.7h) as we currently only
3568 have a single AES bit in the ciphersuite description bitmap.
3569 That change, however, also applied to ciphersuite strings such as
3570 "RC4-MD5" that intentionally matched multiple ciphersuites --
3571 namely, SSL 2.0 ciphersuites in addition to the more common ones
3572 from SSL 3.0/TLS 1.0.
3574 So we change the selection algorithm again: Naming an explicit
3575 ciphersuite selects this one ciphersuite, and any other similar
3576 ciphersuite (same bitmap) from *other* protocol versions.
3577 Thus, "RC4-MD5" again will properly select both the SSL 2.0
3578 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
3580 Since SSL 2.0 does not have any ciphersuites for which the
3581 128/256 bit distinction would be relevant, this works for now.
3582 The proper fix will be to use different bits for AES128 and
3583 AES256, which would have avoided the problems from the beginning;
3584 however, bits are scarce, so we can only do this in a new release
3585 (not just a patchlevel) when we can change the SSL_CIPHER
3586 definition to split the single 'unsigned long mask' bitmap into
3587 multiple values to extend the available space.
3591 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
3593 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
3594 (CVE-2006-4339) [Ben Laurie and Google Security Team]
3596 *) Add AES IGE and biIGE modes.
3599 *) Change the Unix randomness entropy gathering to use poll() when
3600 possible instead of select(), since the latter has some
3601 undesirable limitations.
3602 [Darryl Miles via Richard Levitte and Bodo Moeller]
3604 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
3605 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
3606 cannot be implicitly activated as part of, e.g., the "AES" alias.
3607 However, please upgrade to OpenSSL 0.9.9[-dev] for
3608 non-experimental use of the ECC ciphersuites to get TLS extension
3609 support, which is required for curve and point format negotiation
3610 to avoid potential handshake problems.
3613 *) Disable rogue ciphersuites:
3615 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
3616 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
3617 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
3619 The latter two were purportedly from
3620 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
3623 Also deactivate the remaining ciphersuites from
3624 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
3625 unofficial, and the ID has long expired.
3628 *) Fix RSA blinding Heisenbug (problems sometimes occured on
3629 dual-core machines) and other potential thread-safety issues.
3632 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
3633 versions), which is now available for royalty-free use
3634 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
3635 Also, add Camellia TLS ciphersuites from RFC 4132.
3637 To minimize changes between patchlevels in the OpenSSL 0.9.8
3638 series, Camellia remains excluded from compilation unless OpenSSL
3639 is configured with 'enable-camellia'.
3642 *) Disable the padding bug check when compression is in use. The padding
3643 bug check assumes the first packet is of even length, this is not
3644 necessarily true if compresssion is enabled and can result in false
3645 positives causing handshake failure. The actual bug test is ancient
3646 code so it is hoped that implementations will either have fixed it by
3647 now or any which still have the bug do not support compression.
3650 Changes between 0.9.8a and 0.9.8b [04 May 2006]
3652 *) When applying a cipher rule check to see if string match is an explicit
3653 cipher suite and only match that one cipher suite if it is.
3656 *) Link in manifests for VC++ if needed.
3657 [Austin Ziegler <halostatue@gmail.com>]
3659 *) Update support for ECC-based TLS ciphersuites according to
3660 draft-ietf-tls-ecc-12.txt with proposed changes (but without
3661 TLS extensions, which are supported starting with the 0.9.9
3662 branch, not in the OpenSSL 0.9.8 branch).
3665 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
3666 opaque EVP_CIPHER_CTX handling.
3669 *) Fixes and enhancements to zlib compression code. We now only use
3670 "zlib1.dll" and use the default __cdecl calling convention on Win32
3671 to conform with the standards mentioned here:
3672 http://www.zlib.net/DLL_FAQ.txt
3673 Static zlib linking now works on Windows and the new --with-zlib-include
3674 --with-zlib-lib options to Configure can be used to supply the location
3675 of the headers and library. Gracefully handle case where zlib library
3679 *) Several fixes and enhancements to the OID generation code. The old code
3680 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
3681 handle numbers larger than ULONG_MAX, truncated printing and had a
3682 non standard OBJ_obj2txt() behaviour.
3685 *) Add support for building of engines under engine/ as shared libraries
3686 under VC++ build system.
3689 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
3690 Hopefully, we will not see any false combination of paths any more.
3693 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
3695 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
3696 (part of SSL_OP_ALL). This option used to disable the
3697 countermeasure against man-in-the-middle protocol-version
3698 rollback in the SSL 2.0 server implementation, which is a bad
3699 idea. (CVE-2005-2969)
3701 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
3702 for Information Security, National Institute of Advanced Industrial
3703 Science and Technology [AIST], Japan)]
3705 *) Add two function to clear and return the verify parameter flags.
3708 *) Keep cipherlists sorted in the source instead of sorting them at
3709 runtime, thus removing the need for a lock.
3712 *) Avoid some small subgroup attacks in Diffie-Hellman.
3713 [Nick Mathewson and Ben Laurie]
3715 *) Add functions for well-known primes.
3718 *) Extended Windows CE support.
3719 [Satoshi Nakamura and Andy Polyakov]
3721 *) Initialize SSL_METHOD structures at compile time instead of during
3722 runtime, thus removing the need for a lock.
3725 *) Make PKCS7_decrypt() work even if no certificate is supplied by
3726 attempting to decrypt each encrypted key in turn. Add support to
3730 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
3732 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
3735 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
3738 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
3739 key into the same file any more.
3742 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
3745 *) Add -utf8 command line and config file option to 'ca'.
3746 [Stefan <stf@udoma.org]
3748 *) Removed the macro des_crypt(), as it seems to conflict with some
3749 libraries. Use DES_crypt().
3752 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
3753 involves renaming the source and generated shared-libs for
3754 both. The engines will accept the corrected or legacy ids
3755 ('ncipher' and '4758_cca' respectively) when binding. NB,
3756 this only applies when building 'shared'.
3757 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
3759 *) Add attribute functions to EVP_PKEY structure. Modify
3760 PKCS12_create() to recognize a CSP name attribute and
3761 use it. Make -CSP option work again in pkcs12 utility.
3764 *) Add new functionality to the bn blinding code:
3765 - automatic re-creation of the BN_BLINDING parameters after
3766 a fixed number of uses (currently 32)
3767 - add new function for parameter creation
3768 - introduce flags to control the update behaviour of the
3769 BN_BLINDING parameters
3770 - hide BN_BLINDING structure
3771 Add a second BN_BLINDING slot to the RSA structure to improve
3772 performance when a single RSA object is shared among several
3776 *) Add support for DTLS.
3777 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
3779 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
3780 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
3783 *) Remove buggy and incomplete DH cert support from
3784 ssl/ssl_rsa.c and ssl/s3_both.c
3787 *) Use SHA-1 instead of MD5 as the default digest algorithm for
3788 the apps/openssl applications.
3791 *) Compile clean with "-Wall -Wmissing-prototypes
3792 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
3793 DEBUG_SAFESTACK must also be set.
3796 *) Change ./Configure so that certain algorithms can be disabled by default.
3797 The new counterpiece to "no-xxx" is "enable-xxx".
3799 The patented RC5 and MDC2 algorithms will now be disabled unless
3800 "enable-rc5" and "enable-mdc2", respectively, are specified.
3802 (IDEA remains enabled despite being patented. This is because IDEA
3803 is frequently required for interoperability, and there is no license
3804 fee for non-commercial use. As before, "no-idea" can be used to
3805 avoid this algorithm.)
3809 *) Add processing of proxy certificates (see RFC 3820). This work was
3810 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
3811 EGEE (Enabling Grids for E-science in Europe).
3814 *) RC4 performance overhaul on modern architectures/implementations, such
3815 as Intel P4, IA-64 and AMD64.
3818 *) New utility extract-section.pl. This can be used specify an alternative
3819 section number in a pod file instead of having to treat each file as
3820 a separate case in Makefile. This can be done by adding two lines to the
3823 =for comment openssl_section:XXX
3825 The blank line is mandatory.
3829 *) New arguments -certform, -keyform and -pass for s_client and s_server
3830 to allow alternative format key and certificate files and passphrase
3834 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
3835 update associated structures and add various utility functions.
3837 Add new policy related verify parameters, include policy checking in
3838 standard verify code. Enhance 'smime' application with extra parameters
3839 to support policy checking and print out.
3842 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
3843 Nehemiah processors. These extensions support AES encryption in hardware
3844 as well as RNG (though RNG support is currently disabled).
3845 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
3847 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
3850 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
3851 [Andy Polyakov and a number of other people]
3853 *) Improved PowerPC platform support. Most notably BIGNUM assembler
3854 implementation contributed by IBM.
3855 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
3857 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
3858 exponent rather than 'unsigned long'. There is a corresponding change to
3859 the new 'rsa_keygen' element of the RSA_METHOD structure.
3860 [Jelte Jansen, Geoff Thorpe]
3862 *) Functionality for creating the initial serial number file is now
3863 moved from CA.pl to the 'ca' utility with a new option -create_serial.
3865 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
3866 number file to 1, which is bound to cause problems. To avoid
3867 the problems while respecting compatibility between different 0.9.7
3868 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
3869 CA.pl for serial number initialization. With the new release 0.9.8,
3870 we can fix the problem directly in the 'ca' utility.)
3873 *) Reduced header interdepencies by declaring more opaque objects in
3874 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
3875 give fewer recursive includes, which could break lazy source code - so
3876 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
3877 developers should define this symbol when building and using openssl to
3878 ensure they track the recommended behaviour, interfaces, [etc], but
3879 backwards-compatible behaviour prevails when this isn't defined.
3882 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
3885 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
3886 This will generate a random key of the appropriate length based on the
3887 cipher context. The EVP_CIPHER can provide its own random key generation
3888 routine to support keys of a specific form. This is used in the des and
3889 3des routines to generate a key of the correct parity. Update S/MIME
3890 code to use new functions and hence generate correct parity DES keys.
3891 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
3892 valid (weak or incorrect parity).
3895 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
3896 as looking them up. This is useful when the verified structure may contain
3897 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
3898 present unless the new PKCS7_NO_CRL flag is asserted.
3901 *) Extend ASN1 oid configuration module. It now additionally accepts the
3904 shortName = some long name, 1.2.3.4
3907 *) Reimplemented the BN_CTX implementation. There is now no more static
3908 limitation on the number of variables it can handle nor the depth of the
3909 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
3910 information can now expand as required, and rather than having a single
3911 static array of bignums, BN_CTX now uses a linked-list of such arrays
3912 allowing it to expand on demand whilst maintaining the usefulness of
3913 BN_CTX's "bundling".
3916 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
3917 to allow all RSA operations to function using a single BN_CTX.
3920 *) Preliminary support for certificate policy evaluation and checking. This
3921 is initially intended to pass the tests outlined in "Conformance Testing
3922 of Relying Party Client Certificate Path Processing Logic" v1.07.
3925 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
3926 remained unused and not that useful. A variety of other little bignum
3927 tweaks and fixes have also been made continuing on from the audit (see
3931 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
3932 associated ASN1, EVP and SSL functions and old ASN1 macros.
3935 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
3936 and this should never fail. So the return value from the use of
3937 BN_set_word() (which can fail due to needless expansion) is now deprecated;
3938 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
3941 *) BN_CTX_get() should return zero-valued bignums, providing the same
3942 initialised value as BN_new().
3943 [Geoff Thorpe, suggested by Ulf Möller]
3945 *) Support for inhibitAnyPolicy certificate extension.
3948 *) An audit of the BIGNUM code is underway, for which debugging code is
3949 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
3950 is considered valid when processing BIGNUMs, and causes execution to
3951 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
3952 further steps are taken to deliberately pollute unused data in BIGNUM
3953 structures to try and expose faulty code further on. For now, openssl will
3954 (in its default mode of operation) continue to tolerate the inconsistent
3955 forms that it has tolerated in the past, but authors and packagers should
3956 consider trying openssl and their own applications when compiled with
3957 these debugging symbols defined. It will help highlight potential bugs in
3958 their own code, and will improve the test coverage for OpenSSL itself. At
3959 some point, these tighter rules will become openssl's default to improve
3960 maintainability, though the assert()s and other overheads will remain only
3961 in debugging configurations. See bn.h for more details.
3962 [Geoff Thorpe, Nils Larsch, Ulf Möller]
3964 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
3965 that can only be obtained through BN_CTX_new() (which implicitly
3966 initialises it). The presence of this function only made it possible
3967 to overwrite an existing structure (and cause memory leaks).
3970 *) Because of the callback-based approach for implementing LHASH as a
3971 template type, lh_insert() adds opaque objects to hash-tables and
3972 lh_doall() or lh_doall_arg() are typically used with a destructor callback
3973 to clean up those corresponding objects before destroying the hash table
3974 (and losing the object pointers). So some over-zealous constifications in
3975 LHASH have been relaxed so that lh_insert() does not take (nor store) the
3976 objects as "const" and the lh_doall[_arg] callback wrappers are not
3977 prototyped to have "const" restrictions on the object pointers they are
3978 given (and so aren't required to cast them away any more).
3981 *) The tmdiff.h API was so ugly and minimal that our own timing utility
3982 (speed) prefers to use its own implementation. The two implementations
3983 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
3984 its object type properly exposed (MS_TM) instead of casting to/from "char
3985 *". This may still change yet if someone realises MS_TM and "ms_time_***"
3986 aren't necessarily the greatest nomenclatures - but this is what was used
3987 internally to the implementation so I've used that for now.
3990 *) Ensure that deprecated functions do not get compiled when
3991 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
3992 the self-tests were still using deprecated key-generation functions so
3993 these have been updated also.
3996 *) Reorganise PKCS#7 code to separate the digest location functionality
3997 into PKCS7_find_digest(), digest addition into PKCS7_bio_add_digest().
3998 New function PKCS7_set_digest() to set the digest type for PKCS#7
3999 digestedData type. Add additional code to correctly generate the
4000 digestedData type and add support for this type in PKCS7 initialization
4004 *) New function PKCS7_set0_type_other() this initializes a PKCS7
4005 structure of type "other".
4008 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
4009 sure the loop does correctly stop and breaking ("division by zero")
4010 modulus operations are not performed. The (pre-generated) prime
4011 table crypto/bn/bn_prime.h was already correct, but it could not be
4012 re-generated on some platforms because of the "division by zero"
4013 situation in the script.
4014 [Ralf S. Engelschall]
4016 *) Update support for ECC-based TLS ciphersuites according to
4017 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
4018 SHA-1 now is only used for "small" curves (where the
4019 representation of a field element takes up to 24 bytes); for
4020 larger curves, the field element resulting from ECDH is directly
4021 used as premaster secret.
4022 [Douglas Stebila (Sun Microsystems Laboratories)]
4024 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
4025 curve secp160r1 to the tests.
4026 [Douglas Stebila (Sun Microsystems Laboratories)]
4028 *) Add the possibility to load symbols globally with DSO.
4029 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
4031 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
4032 control of the error stack.
4035 *) Add support for STORE in ENGINE.
4038 *) Add the STORE type. The intention is to provide a common interface
4039 to certificate and key stores, be they simple file-based stores, or
4040 HSM-type store, or LDAP stores, or...
4041 NOTE: The code is currently UNTESTED and isn't really used anywhere.
4044 *) Add a generic structure called OPENSSL_ITEM. This can be used to
4045 pass a list of arguments to any function as well as provide a way
4046 for a function to pass data back to the caller.
4049 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
4050 works like BUF_strdup() but can be used to duplicate a portion of
4051 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
4055 *) Add the function sk_find_ex() which works like sk_find(), but will
4056 return an index to an element even if an exact match couldn't be
4057 found. The index is guaranteed to point at the element where the
4058 searched-for key would be inserted to preserve sorting order.
4061 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
4062 takes an extra flags argument for optional functionality. Currently,
4063 the following flags are defined:
4065 OBJ_BSEARCH_VALUE_ON_NOMATCH
4066 This one gets OBJ_bsearch_ex() to return a pointer to the first
4067 element where the comparing function returns a negative or zero
4070 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
4071 This one gets OBJ_bsearch_ex() to return a pointer to the first
4072 element where the comparing function returns zero. This is useful
4073 if there are more than one element where the comparing function
4077 *) Make it possible to create self-signed certificates with 'openssl ca'
4078 in such a way that the self-signed certificate becomes part of the
4079 CA database and uses the same mechanisms for serial number generation
4080 as all other certificate signing. The new flag '-selfsign' enables
4081 this functionality. Adapt CA.sh and CA.pl.in.
4084 *) Add functionality to check the public key of a certificate request
4085 against a given private. This is useful to check that a certificate
4086 request can be signed by that key (self-signing).
4089 *) Make it possible to have multiple active certificates with the same
4090 subject in the CA index file. This is done only if the keyword
4091 'unique_subject' is set to 'no' in the main CA section (default
4092 if 'CA_default') of the configuration file. The value is saved
4093 with the database itself in a separate index attribute file,
4094 named like the index file with '.attr' appended to the name.
4097 *) Generate muti valued AVAs using '+' notation in config files for
4101 *) Support for nameConstraints certificate extension.
4104 *) Support for policyConstraints certificate extension.
4107 *) Support for policyMappings certificate extension.
4110 *) Make sure the default DSA_METHOD implementation only uses its
4111 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
4112 and change its own handlers to be NULL so as to remove unnecessary
4113 indirection. This lets alternative implementations fallback to the
4114 default implementation more easily.
4117 *) Support for directoryName in GeneralName related extensions
4121 *) Make it possible to link applications using Makefile.shared.
4122 Make that possible even when linking against static libraries!
4125 *) Support for single pass processing for S/MIME signing. This now
4126 means that S/MIME signing can be done from a pipe, in addition
4127 cleartext signing (multipart/signed type) is effectively streaming
4128 and the signed data does not need to be all held in memory.
4130 This is done with a new flag PKCS7_STREAM. When this flag is set
4131 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
4132 is done after the data is output (and digests calculated) in
4133 SMIME_write_PKCS7().
4136 *) Add full support for -rpath/-R, both in shared libraries and
4137 applications, at least on the platforms where it's known how
4141 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
4142 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
4143 will now compute a table of multiples of the generator that
4144 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
4145 faster (notably in the case of a single point multiplication,
4146 scalar * generator).
4147 [Nils Larsch, Bodo Moeller]
4149 *) IPv6 support for certificate extensions. The various extensions
4150 which use the IP:a.b.c.d can now take IPv6 addresses using the
4151 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
4155 *) Added an ENGINE that implements RSA by performing private key
4156 exponentiations with the GMP library. The conversions to and from
4157 GMP's mpz_t format aren't optimised nor are any montgomery forms
4158 cached, and on x86 it appears OpenSSL's own performance has caught up.
4159 However there are likely to be other architectures where GMP could
4160 provide a boost. This ENGINE is not built in by default, but it can be
4161 specified at Configure time and should be accompanied by the necessary
4162 linker additions, eg;
4163 ./config -DOPENSSL_USE_GMP -lgmp
4166 *) "openssl engine" will not display ENGINE/DSO load failure errors when
4167 testing availability of engines with "-t" - the old behaviour is
4168 produced by increasing the feature's verbosity with "-tt".
4171 *) ECDSA routines: under certain error conditions uninitialized BN objects
4172 could be freed. Solution: make sure initialization is performed early
4173 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
4177 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
4178 and DH_METHOD (eg. by ENGINE implementations) to override the normal
4179 software implementations. For DSA and DH, parameter generation can
4180 also be overriden by providing the appropriate method callbacks.
4183 *) Change the "progress" mechanism used in key-generation and
4184 primality testing to functions that take a new BN_GENCB pointer in
4185 place of callback/argument pairs. The new API functions have "_ex"
4186 postfixes and the older functions are reimplemented as wrappers for
4187 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
4188 declarations of the old functions to help (graceful) attempts to
4189 migrate to the new functions. Also, the new key-generation API
4190 functions operate on a caller-supplied key-structure and return
4191 success/failure rather than returning a key or NULL - this is to
4192 help make "keygen" another member function of RSA_METHOD etc.
4194 Example for using the new callback interface:
4196 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
4200 BN_GENCB_set(&my_cb, my_callback, my_arg);
4202 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
4203 /* For the meaning of a, b in calls to my_callback(), see the
4204 * documentation of the function that calls the callback.
4205 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
4206 * my_callback should return 1 if it wants BN_is_prime_ex()
4207 * to continue, or 0 to stop.
4212 *) Change the ZLIB compression method to be stateful, and make it
4213 available to TLS with the number defined in
4214 draft-ietf-tls-compression-04.txt.
4217 *) Add the ASN.1 structures and functions for CertificatePair, which
4218 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
4220 CertificatePair ::= SEQUENCE {
4221 forward [0] Certificate OPTIONAL,
4222 reverse [1] Certificate OPTIONAL,
4223 -- at least one of the pair shall be present -- }
4225 Also implement the PEM functions to read and write certificate
4226 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
4228 This needed to be defined, mostly for the sake of the LDAP
4229 attribute crossCertificatePair, but may prove useful elsewhere as
4233 *) Make it possible to inhibit symlinking of shared libraries in
4234 Makefile.shared, for Cygwin's sake.
4237 *) Extend the BIGNUM API by creating a function
4238 void BN_set_negative(BIGNUM *a, int neg);
4239 and a macro that behave like
4240 int BN_is_negative(const BIGNUM *a);
4242 to avoid the need to access 'a->neg' directly in applications.
4245 *) Implement fast modular reduction for pseudo-Mersenne primes
4246 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
4247 EC_GROUP_new_curve_GFp() will now automatically use this
4249 [Nils Larsch <nla@trustcenter.de>]
4251 *) Add new lock type (CRYPTO_LOCK_BN).
4254 *) Change the ENGINE framework to automatically load engines
4255 dynamically from specific directories unless they could be
4256 found to already be built in or loaded. Move all the
4257 current engines except for the cryptodev one to a new
4259 The engines in engines/ are built as shared libraries if
4260 the "shared" options was given to ./Configure or ./config.
4261 Otherwise, they are inserted in libcrypto.a.
4262 /usr/local/ssl/engines is the default directory for dynamic
4263 engines, but that can be overriden at configure time through
4264 the usual use of --prefix and/or --openssldir, and at run
4265 time with the environment variable OPENSSL_ENGINES.
4266 [Geoff Thorpe and Richard Levitte]
4268 *) Add Makefile.shared, a helper makefile to build shared
4269 libraries. Adapt Makefile.org.
4272 *) Add version info to Win32 DLLs.
4273 [Peter 'Luna' Runestig" <peter@runestig.com>]
4275 *) Add new 'medium level' PKCS#12 API. Certificates and keys
4276 can be added using this API to created arbitrary PKCS#12
4277 files while avoiding the low level API.
4279 New options to PKCS12_create(), key or cert can be NULL and
4280 will then be omitted from the output file. The encryption
4281 algorithm NIDs can be set to -1 for no encryption, the mac
4282 iteration count can be set to 0 to omit the mac.
4284 Enhance pkcs12 utility by making the -nokeys and -nocerts
4285 options work when creating a PKCS#12 file. New option -nomac
4286 to omit the mac, NONE can be set for an encryption algorithm.
4287 New code is modified to use the enhanced PKCS12_create()
4288 instead of the low level API.
4291 *) Extend ASN1 encoder to support indefinite length constructed
4292 encoding. This can output sequences tags and octet strings in
4293 this form. Modify pk7_asn1.c to support indefinite length
4294 encoding. This is experimental and needs additional code to
4295 be useful, such as an ASN1 bio and some enhanced streaming
4298 Extend template encode functionality so that tagging is passed
4299 down to the template encoder.
4302 *) Let 'openssl req' fail if an argument to '-newkey' is not
4303 recognized instead of using RSA as a default.
4306 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
4307 As these are not official, they are not included in "ALL";
4308 the "ECCdraft" ciphersuite group alias can be used to select them.
4309 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
4311 *) Add ECDH engine support.
4312 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
4314 *) Add ECDH in new directory crypto/ecdh/.
4315 [Douglas Stebila (Sun Microsystems Laboratories)]
4317 *) Let BN_rand_range() abort with an error after 100 iterations
4318 without success (which indicates a broken PRNG).
4321 *) Change BN_mod_sqrt() so that it verifies that the input value
4322 is really the square of the return value. (Previously,
4323 BN_mod_sqrt would show GIGO behaviour.)
4326 *) Add named elliptic curves over binary fields from X9.62, SECG,
4327 and WAP/WTLS; add OIDs that were still missing.
4329 [Sheueling Chang Shantz and Douglas Stebila
4330 (Sun Microsystems Laboratories)]
4332 *) Extend the EC library for elliptic curves over binary fields
4333 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
4336 EC_GF2m_simple_method
4340 EC_GROUP_new_curve_GF2m
4341 EC_GROUP_set_curve_GF2m
4342 EC_GROUP_get_curve_GF2m
4343 EC_POINT_set_affine_coordinates_GF2m
4344 EC_POINT_get_affine_coordinates_GF2m
4345 EC_POINT_set_compressed_coordinates_GF2m
4347 Point compression for binary fields is disabled by default for
4348 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
4351 As binary polynomials are represented as BIGNUMs, various members
4352 of the EC_GROUP and EC_POINT data structures can be shared
4353 between the implementations for prime fields and binary fields;
4354 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
4355 are essentially identical to their ..._GFp counterparts.
4356 (For simplicity, the '..._GFp' prefix has been dropped from
4357 various internal method names.)
4359 An internal 'field_div' method (similar to 'field_mul' and
4360 'field_sqr') has been added; this is used only for binary fields.
4362 [Sheueling Chang Shantz and Douglas Stebila
4363 (Sun Microsystems Laboratories)]
4365 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
4366 through methods ('mul', 'precompute_mult').
4368 The generic implementations (now internally called 'ec_wNAF_mul'
4369 and 'ec_wNAF_precomputed_mult') remain the default if these
4370 methods are undefined.
4372 [Sheueling Chang Shantz and Douglas Stebila
4373 (Sun Microsystems Laboratories)]
4375 *) New function EC_GROUP_get_degree, which is defined through
4376 EC_METHOD. For curves over prime fields, this returns the bit
4377 length of the modulus.
4379 [Sheueling Chang Shantz and Douglas Stebila
4380 (Sun Microsystems Laboratories)]
4382 *) New functions EC_GROUP_dup, EC_POINT_dup.
4383 (These simply call ..._new and ..._copy).
4385 [Sheueling Chang Shantz and Douglas Stebila
4386 (Sun Microsystems Laboratories)]
4388 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
4389 Polynomials are represented as BIGNUMs (where the sign bit is not
4390 used) in the following functions [macros]:
4393 BN_GF2m_sub [= BN_GF2m_add]
4394 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
4395 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
4396 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
4398 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
4399 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
4400 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
4401 BN_GF2m_cmp [= BN_ucmp]
4403 (Note that only the 'mod' functions are actually for fields GF(2^m).
4404 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
4406 For some functions, an the irreducible polynomial defining a
4407 field can be given as an 'unsigned int[]' with strictly
4408 decreasing elements giving the indices of those bits that are set;
4409 i.e., p[] represents the polynomial
4410 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
4412 p[0] > p[1] > ... > p[k] = 0.
4413 This applies to the following functions:
4418 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
4419 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
4421 BN_GF2m_mod_sqrt_arr
4422 BN_GF2m_mod_solve_quad_arr
4426 Conversion can be performed by the following functions:
4431 bntest.c has additional tests for binary polynomial arithmetic.
4433 Two implementations for BN_GF2m_mod_div() are available.
4434 The default algorithm simply uses BN_GF2m_mod_inv() and
4435 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
4436 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
4437 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
4439 [Sheueling Chang Shantz and Douglas Stebila
4440 (Sun Microsystems Laboratories)]
4442 *) Add new error code 'ERR_R_DISABLED' that can be used when some
4443 functionality is disabled at compile-time.
4444 [Douglas Stebila <douglas.stebila@sun.com>]
4446 *) Change default behaviour of 'openssl asn1parse' so that more
4447 information is visible when viewing, e.g., a certificate:
4449 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
4450 mode the content of non-printable OCTET STRINGs is output in a
4451 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
4452 avoid the appearance of a printable string.
4453 [Nils Larsch <nla@trustcenter.de>]
4455 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
4457 EC_GROUP_set_asn1_flag()
4458 EC_GROUP_get_asn1_flag()
4459 EC_GROUP_set_point_conversion_form()
4460 EC_GROUP_get_point_conversion_form()
4461 These control ASN1 encoding details:
4462 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
4463 has been set to OPENSSL_EC_NAMED_CURVE.
4464 - Points are encoded in uncompressed form by default; options for
4465 asn1_for are as for point2oct, namely
4466 POINT_CONVERSION_COMPRESSED
4467 POINT_CONVERSION_UNCOMPRESSED
4468 POINT_CONVERSION_HYBRID
4470 Also add 'seed' and 'seed_len' members to EC_GROUP with access
4473 EC_GROUP_get0_seed()
4474 EC_GROUP_get_seed_len()
4475 This is used only for ASN1 purposes (so far).
4476 [Nils Larsch <nla@trustcenter.de>]
4478 *) Add 'field_type' member to EC_METHOD, which holds the NID
4479 of the appropriate field type OID. The new function
4480 EC_METHOD_get_field_type() returns this value.
4481 [Nils Larsch <nla@trustcenter.de>]
4486 EC_POINT_point2hex()
4487 EC_POINT_hex2point()
4488 providing useful interfaces to EC_POINT_point2oct() and
4489 EC_POINT_oct2point().
4490 [Nils Larsch <nla@trustcenter.de>]
4492 *) Change internals of the EC library so that the functions
4493 EC_GROUP_set_generator()
4494 EC_GROUP_get_generator()
4495 EC_GROUP_get_order()
4496 EC_GROUP_get_cofactor()
4497 are implemented directly in crypto/ec/ec_lib.c and not dispatched
4498 to methods, which would lead to unnecessary code duplication when
4499 adding different types of curves.
4500 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
4502 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
4503 arithmetic, and such that modified wNAFs are generated
4504 (which avoid length expansion in many cases).
4507 *) Add a function EC_GROUP_check_discriminant() (defined via
4508 EC_METHOD) that verifies that the curve discriminant is non-zero.
4510 Add a function EC_GROUP_check() that makes some sanity tests
4511 on a EC_GROUP, its generator and order. This includes
4512 EC_GROUP_check_discriminant().
4513 [Nils Larsch <nla@trustcenter.de>]
4515 *) Add ECDSA in new directory crypto/ecdsa/.
4517 Add applications 'openssl ecparam' and 'openssl ecdsa'
4518 (these are based on 'openssl dsaparam' and 'openssl dsa').
4520 ECDSA support is also included in various other files across the
4521 library. Most notably,
4522 - 'openssl req' now has a '-newkey ecdsa:file' option;
4523 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
4524 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
4525 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
4526 them suitable for ECDSA where domain parameters must be
4527 extracted before the specific public key;
4528 - ECDSA engine support has been added.
4529 [Nils Larsch <nla@trustcenter.de>]
4531 *) Include some named elliptic curves, and add OIDs from X9.62,
4532 SECG, and WAP/WTLS. Each curve can be obtained from the new
4534 EC_GROUP_new_by_curve_name(),
4535 and the list of available named curves can be obtained with
4536 EC_get_builtin_curves().
4537 Also add a 'curve_name' member to EC_GROUP objects, which can be
4539 EC_GROUP_set_curve_name()
4540 EC_GROUP_get_curve_name()
4541 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
4543 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
4544 was actually never needed) and in BN_mul(). The removal in BN_mul()
4545 required a small change in bn_mul_part_recursive() and the addition
4546 of the functions bn_cmp_part_words(), bn_sub_part_words() and
4547 bn_add_part_words(), which do the same thing as bn_cmp_words(),
4548 bn_sub_words() and bn_add_words() except they take arrays with
4552 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
4554 *) Cleanse PEM buffers before freeing them since they may contain
4556 [Benjamin Bennett <ben@psc.edu>]
4558 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
4559 a ciphersuite string such as "DEFAULT:RSA" cannot enable
4560 authentication-only ciphersuites.
4563 *) Since AES128 and AES256 share a single mask bit in the logic of
4564 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
4565 kludge to work properly if AES128 is available and AES256 isn't.
4568 *) Expand security boundary to match 1.1.1 module.
4571 *) Remove redundant features: hash file source, editing of test vectors
4572 modify fipsld to use external fips_premain.c signature.
4575 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
4576 run algorithm test programs.
4579 *) Make algorithm test programs more tolerant of whitespace.
4582 *) Have SSL/TLS server implementation tolerate "mismatched" record
4583 protocol version while receiving ClientHello even if the
4584 ClientHello is fragmented. (The server can't insist on the
4585 particular protocol version it has chosen before the ServerHello
4586 message has informed the client about his choice.)
4589 *) Load error codes if they are not already present instead of using a
4590 static variable. This allows them to be cleanly unloaded and reloaded.
4593 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
4595 *) Introduce limits to prevent malicious keys being able to
4596 cause a denial of service. (CVE-2006-2940)
4597 [Steve Henson, Bodo Moeller]
4599 *) Fix ASN.1 parsing of certain invalid structures that can result
4600 in a denial of service. (CVE-2006-2937) [Steve Henson]
4602 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
4603 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
4605 *) Fix SSL client code which could crash if connecting to a
4606 malicious SSLv2 server. (CVE-2006-4343)
4607 [Tavis Ormandy and Will Drewry, Google Security Team]
4609 *) Change ciphersuite string processing so that an explicit
4610 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
4611 will no longer include "AES128-SHA"), and any other similar
4612 ciphersuite (same bitmap) from *other* protocol versions (so that
4613 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
4614 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
4615 changes from 0.9.8b and 0.9.8d.
4618 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
4620 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
4621 (CVE-2006-4339) [Ben Laurie and Google Security Team]
4623 *) Change the Unix randomness entropy gathering to use poll() when
4624 possible instead of select(), since the latter has some
4625 undesirable limitations.
4626 [Darryl Miles via Richard Levitte and Bodo Moeller]
4628 *) Disable rogue ciphersuites:
4630 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
4631 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
4632 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
4634 The latter two were purportedly from
4635 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
4638 Also deactive the remaining ciphersuites from
4639 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
4640 unofficial, and the ID has long expired.
4643 *) Fix RSA blinding Heisenbug (problems sometimes occured on
4644 dual-core machines) and other potential thread-safety issues.
4647 Changes between 0.9.7i and 0.9.7j [04 May 2006]
4649 *) Adapt fipsld and the build system to link against the validated FIPS
4650 module in FIPS mode.
4653 *) Fixes for VC++ 2005 build under Windows.
4656 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
4657 from a Windows bash shell such as MSYS. It is autodetected from the
4658 "config" script when run from a VC++ environment. Modify standard VC++
4659 build to use fipscanister.o from the GNU make build.
4662 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
4664 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
4665 The value now differs depending on if you build for FIPS or not.
4666 BEWARE! A program linked with a shared FIPSed libcrypto can't be
4667 safely run with a non-FIPSed libcrypto, as it may crash because of
4668 the difference induced by this change.
4671 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
4673 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
4674 (part of SSL_OP_ALL). This option used to disable the
4675 countermeasure against man-in-the-middle protocol-version
4676 rollback in the SSL 2.0 server implementation, which is a bad
4677 idea. (CVE-2005-2969)
4679 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
4680 for Information Security, National Institute of Advanced Industrial
4681 Science and Technology [AIST], Japan)]
4683 *) Minimal support for X9.31 signatures and PSS padding modes. This is
4684 mainly for FIPS compliance and not fully integrated at this stage.
4687 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
4688 the exponentiation using a fixed-length exponent. (Otherwise,
4689 the information leaked through timing could expose the secret key
4690 after many signatures; cf. Bleichenbacher's attack on DSA with
4694 *) Make a new fixed-window mod_exp implementation the default for
4695 RSA, DSA, and DH private-key operations so that the sequence of
4696 squares and multiplies and the memory access pattern are
4697 independent of the particular secret key. This will mitigate
4698 cache-timing and potential related attacks.
4700 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
4701 and this is automatically used by BN_mod_exp_mont() if the new flag
4702 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
4703 will use this BN flag for private exponents unless the flag
4704 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
4705 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
4707 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
4709 *) Change the client implementation for SSLv23_method() and
4710 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
4711 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
4712 (Previously, the SSL 2.0 backwards compatible Client Hello
4713 message format would be used even with SSL_OP_NO_SSLv2.)
4716 *) Add support for smime-type MIME parameter in S/MIME messages which some
4720 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
4721 a threadsafe manner. Modify rsa code to use new function and add calls
4722 to dsa and dh code (which had race conditions before).
4725 *) Include the fixed error library code in the C error file definitions
4726 instead of fixing them up at runtime. This keeps the error code
4727 structures constant.
4730 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
4732 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
4735 *) Fixes for newer kerberos headers. NB: the casts are needed because
4736 the 'length' field is signed on one version and unsigned on another
4737 with no (?) obvious way to tell the difference, without these VC++
4738 complains. Also the "definition" of FAR (blank) is no longer included
4739 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
4740 some needed definitions.
4743 *) Undo Cygwin change.
4746 *) Added support for proxy certificates according to RFC 3820.
4747 Because they may be a security thread to unaware applications,
4748 they must be explicitely allowed in run-time. See
4749 docs/HOWTO/proxy_certificates.txt for further information.
4752 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
4754 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
4755 server and client random values. Previously
4756 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
4757 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
4759 This change has negligible security impact because:
4761 1. Server and client random values still have 24 bytes of pseudo random
4764 2. Server and client random values are sent in the clear in the initial
4767 3. The master secret is derived using the premaster secret (48 bytes in
4768 size for static RSA ciphersuites) as well as client server and random
4771 The OpenSSL team would like to thank the UK NISCC for bringing this issue
4774 [Stephen Henson, reported by UK NISCC]
4776 *) Use Windows randomness collection on Cygwin.
4779 *) Fix hang in EGD/PRNGD query when communication socket is closed
4780 prematurely by EGD/PRNGD.
4781 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
4783 *) Prompt for pass phrases when appropriate for PKCS12 input format.
4786 *) Back-port of selected performance improvements from development
4787 branch, as well as improved support for PowerPC platforms.
4790 *) Add lots of checks for memory allocation failure, error codes to indicate
4791 failure and freeing up memory if a failure occurs.
4792 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
4794 *) Add new -passin argument to dgst.
4797 *) Perform some character comparisons of different types in X509_NAME_cmp:
4798 this is needed for some certificates that reencode DNs into UTF8Strings
4799 (in violation of RFC3280) and can't or wont issue name rollover
4803 *) Make an explicit check during certificate validation to see that
4804 the CA setting in each certificate on the chain is correct. As a
4805 side effect always do the following basic checks on extensions,
4806 not just when there's an associated purpose to the check:
4808 - if there is an unhandled critical extension (unless the user
4809 has chosen to ignore this fault)
4810 - if the path length has been exceeded (if one is set at all)
4811 - that certain extensions fit the associated purpose (if one has
4815 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
4817 *) Avoid a race condition when CRLs are checked in a multi threaded
4818 environment. This would happen due to the reordering of the revoked
4819 entries during signature checking and serial number lookup. Now the
4820 encoding is cached and the serial number sort performed under a lock.
4821 Add new STACK function sk_is_sorted().
4824 *) Add Delta CRL to the extension code.
4827 *) Various fixes to s3_pkt.c so alerts are sent properly.
4828 [David Holmes <d.holmes@f5.com>]
4830 *) Reduce the chances of duplicate issuer name and serial numbers (in
4831 violation of RFC3280) using the OpenSSL certificate creation utilities.
4832 This is done by creating a random 64 bit value for the initial serial
4833 number when a serial number file is created or when a self signed
4834 certificate is created using 'openssl req -x509'. The initial serial
4835 number file is created using 'openssl x509 -next_serial' in CA.pl
4836 rather than being initialized to 1.
4839 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
4841 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
4842 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
4843 [Joe Orton, Steve Henson]
4845 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
4847 [Joe Orton, Steve Henson]
4849 *) Make it possible to have multiple active certificates with the same
4850 subject in the CA index file. This is done only if the keyword
4851 'unique_subject' is set to 'no' in the main CA section (default
4852 if 'CA_default') of the configuration file. The value is saved
4853 with the database itself in a separate index attribute file,
4854 named like the index file with '.attr' appended to the name.
4857 *) X509 verify fixes. Disable broken certificate workarounds when
4858 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
4859 keyUsage extension present. Don't accept CRLs with unhandled critical
4860 extensions: since verify currently doesn't process CRL extensions this
4861 rejects a CRL with *any* critical extensions. Add new verify error codes
4865 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
4866 A clarification of RFC2560 will require the use of OCTET STRINGs and
4867 some implementations cannot handle the current raw format. Since OpenSSL
4868 copies and compares OCSP nonces as opaque blobs without any attempt at
4869 parsing them this should not create any compatibility issues.
4872 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
4873 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
4874 this HMAC (and other) operations are several times slower than OpenSSL
4878 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
4879 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
4881 *) Use the correct content when signing type "other".
4884 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
4886 *) Fix various bugs revealed by running the NISCC test suite:
4888 Stop out of bounds reads in the ASN1 code when presented with
4889 invalid tags (CVE-2003-0543 and CVE-2003-0544).
4891 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
4893 If verify callback ignores invalid public key errors don't try to check
4894 certificate signature with the NULL public key.
4898 *) New -ignore_err option in ocsp application to stop the server
4899 exiting on the first error in a request.
4902 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
4903 if the server requested one: as stated in TLS 1.0 and SSL 3.0
4907 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
4908 extra data after the compression methods not only for TLS 1.0
4909 but also for SSL 3.0 (as required by the specification).
4910 [Bodo Moeller; problem pointed out by Matthias Loepfe]
4912 *) Change X509_certificate_type() to mark the key as exported/exportable
4913 when it's 512 *bits* long, not 512 bytes.
4916 *) Change AES_cbc_encrypt() so it outputs exact multiple of
4917 blocks during encryption.
4920 *) Various fixes to base64 BIO and non blocking I/O. On write
4921 flushes were not handled properly if the BIO retried. On read
4922 data was not being buffered properly and had various logic bugs.
4923 This also affects blocking I/O when the data being decoded is a
4927 *) Various S/MIME bugfixes and compatibility changes:
4928 output correct application/pkcs7 MIME type if
4929 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
4930 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
4931 of files as .eml work). Correctly handle very long lines in MIME
4935 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
4937 *) Countermeasure against the Klima-Pokorny-Rosa extension of
4938 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
4939 a protocol version number mismatch like a decryption error
4940 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
4943 *) Turn on RSA blinding by default in the default implementation
4944 to avoid a timing attack. Applications that don't want it can call
4945 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
4946 They would be ill-advised to do so in most cases.
4947 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
4949 *) Change RSA blinding code so that it works when the PRNG is not
4950 seeded (in this case, the secret RSA exponent is abused as
4951 an unpredictable seed -- if it is not unpredictable, there
4952 is no point in blinding anyway). Make RSA blinding thread-safe
4953 by remembering the creator's thread ID in rsa->blinding and
4954 having all other threads use local one-time blinding factors
4955 (this requires more computation than sharing rsa->blinding, but
4956 avoids excessive locking; and if an RSA object is not shared
4957 between threads, blinding will still be very fast).
4960 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
4961 ENGINE as defaults for all supported algorithms irrespective of
4962 the 'flags' parameter. 'flags' is now honoured, so applications
4963 should make sure they are passing it correctly.
4966 *) Target "mingw" now allows native Windows code to be generated in
4967 the Cygwin environment as well as with the MinGW compiler.
4970 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
4972 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
4973 via timing by performing a MAC computation even if incorrect
4974 block cipher padding has been found. This is a countermeasure
4975 against active attacks where the attacker has to distinguish
4976 between bad padding and a MAC verification error. (CVE-2003-0078)
4978 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
4979 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
4980 Martin Vuagnoux (EPFL, Ilion)]
4982 *) Make the no-err option work as intended. The intention with no-err
4983 is not to have the whole error stack handling routines removed from
4984 libcrypto, it's only intended to remove all the function name and
4985 reason texts, thereby removing some of the footprint that may not
4986 be interesting if those errors aren't displayed anyway.
4988 NOTE: it's still possible for any application or module to have it's
4989 own set of error texts inserted. The routines are there, just not
4990 used by default when no-err is given.
4993 *) Add support for FreeBSD on IA64.
4994 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
4996 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
4997 Kerberos function mit_des_cbc_cksum(). Before this change,
4998 the value returned by DES_cbc_cksum() was like the one from
4999 mit_des_cbc_cksum(), except the bytes were swapped.
5000 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
5002 *) Allow an application to disable the automatic SSL chain building.
5003 Before this a rather primitive chain build was always performed in
5004 ssl3_output_cert_chain(): an application had no way to send the
5005 correct chain if the automatic operation produced an incorrect result.
5007 Now the chain builder is disabled if either:
5009 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
5011 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
5013 The reasoning behind this is that an application would not want the
5014 auto chain building to take place if extra chain certificates are
5015 present and it might also want a means of sending no additional
5016 certificates (for example the chain has two certificates and the
5020 *) Add the possibility to build without the ENGINE framework.
5021 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
5023 *) Under Win32 gmtime() can return NULL: check return value in
5024 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
5027 *) DSA routines: under certain error conditions uninitialized BN objects
5028 could be freed. Solution: make sure initialization is performed early
5029 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
5030 Nils Larsch <nla@trustcenter.de> via PR#459)
5033 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
5034 checked on reconnect on the client side, therefore session resumption
5035 could still fail with a "ssl session id is different" error. This
5036 behaviour is masked when SSL_OP_ALL is used due to
5037 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
5038 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
5039 followup to PR #377.
5042 *) IA-32 assembler support enhancements: unified ELF targets, support
5043 for SCO/Caldera platforms, fix for Cygwin shared build.
5046 *) Add support for FreeBSD on sparc64. As a consequence, support for
5047 FreeBSD on non-x86 processors is separate from x86 processors on
5048 the config script, much like the NetBSD support.
5049 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
5051 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
5053 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
5056 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
5057 code (06) was taken as the first octet of the session ID and the last
5058 octet was ignored consequently. As a result SSLv2 client side session
5059 caching could not have worked due to the session ID mismatch between
5061 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
5065 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
5066 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
5070 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
5071 seems that in spite of existing for more than a year, many application
5072 author have done nothing to provide the necessary callbacks, which
5073 means that this particular engine will not work properly anywhere.
5074 This is a very unfortunate situation which forces us, in the name
5075 of usability, to give the hw_ncipher.c a static lock, which is part
5077 NOTE: This is for the 0.9.7 series ONLY. This hack will never
5078 appear in 0.9.8 or later. We EXPECT application authors to have
5079 dealt properly with this when 0.9.8 is released (unless we actually
5080 make such changes in the libcrypto locking code that changes will
5081 have to be made anyway).
5084 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
5085 octets have been read, EOF or an error occurs. Without this change
5086 some truncated ASN1 structures will not produce an error.
5089 *) Disable Heimdal support, since it hasn't been fully implemented.
5090 Still give the possibility to force the use of Heimdal, but with
5091 warnings and a request that patches get sent to openssl-dev.
5094 *) Add the VC-CE target, introduce the WINCE sysname, and add
5095 INSTALL.WCE and appropriate conditionals to make it build.
5096 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
5098 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
5099 cygssl-x.y.z.dll, where x, y and z are the major, minor and
5100 edit numbers of the version.
5101 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
5103 *) Introduce safe string copy and catenation functions
5104 (BUF_strlcpy() and BUF_strlcat()).
5105 [Ben Laurie (CHATS) and Richard Levitte]
5107 *) Avoid using fixed-size buffers for one-line DNs.
5108 [Ben Laurie (CHATS)]
5110 *) Add BUF_MEM_grow_clean() to avoid information leakage when
5111 resizing buffers containing secrets, and use where appropriate.
5112 [Ben Laurie (CHATS)]
5114 *) Avoid using fixed size buffers for configuration file location.
5115 [Ben Laurie (CHATS)]
5117 *) Avoid filename truncation for various CA files.
5118 [Ben Laurie (CHATS)]
5120 *) Use sizeof in preference to magic numbers.
5121 [Ben Laurie (CHATS)]
5123 *) Avoid filename truncation in cert requests.
5124 [Ben Laurie (CHATS)]
5126 *) Add assertions to check for (supposedly impossible) buffer
5128 [Ben Laurie (CHATS)]
5130 *) Don't cache truncated DNS entries in the local cache (this could
5131 potentially lead to a spoofing attack).
5132 [Ben Laurie (CHATS)]
5134 *) Fix various buffers to be large enough for hex/decimal
5135 representations in a platform independent manner.
5136 [Ben Laurie (CHATS)]
5138 *) Add CRYPTO_realloc_clean() to avoid information leakage when
5139 resizing buffers containing secrets, and use where appropriate.
5140 [Ben Laurie (CHATS)]
5142 *) Add BIO_indent() to avoid much slightly worrying code to do
5144 [Ben Laurie (CHATS)]
5146 *) Convert sprintf()/BIO_puts() to BIO_printf().
5147 [Ben Laurie (CHATS)]
5149 *) buffer_gets() could terminate with the buffer only half
5151 [Ben Laurie (CHATS)]
5153 *) Add assertions to prevent user-supplied crypto functions from
5154 overflowing internal buffers by having large block sizes, etc.
5155 [Ben Laurie (CHATS)]
5157 *) New OPENSSL_assert() macro (similar to assert(), but enabled
5159 [Ben Laurie (CHATS)]
5161 *) Eliminate unused copy of key in RC4.
5162 [Ben Laurie (CHATS)]
5164 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
5165 [Ben Laurie (CHATS)]
5167 *) Fix off-by-one error in EGD path.
5168 [Ben Laurie (CHATS)]
5170 *) If RANDFILE path is too long, ignore instead of truncating.
5171 [Ben Laurie (CHATS)]
5173 *) Eliminate unused and incorrectly sized X.509 structure
5175 [Ben Laurie (CHATS)]
5177 *) Eliminate unused and dangerous function knumber().
5178 [Ben Laurie (CHATS)]
5180 *) Eliminate unused and dangerous structure, KSSL_ERR.
5181 [Ben Laurie (CHATS)]
5183 *) Protect against overlong session ID context length in an encoded
5184 session object. Since these are local, this does not appear to be
5186 [Ben Laurie (CHATS)]
5188 *) Change from security patch (see 0.9.6e below) that did not affect
5189 the 0.9.6 release series:
5191 Remote buffer overflow in SSL3 protocol - an attacker could
5192 supply an oversized master key in Kerberos-enabled versions.
5194 [Ben Laurie (CHATS)]
5196 *) Change the SSL kerb5 codes to match RFC 2712.
5199 *) Make -nameopt work fully for req and add -reqopt switch.
5200 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
5202 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
5203 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
5205 *) Make sure tests can be performed even if the corresponding algorithms
5206 have been removed entirely. This was also the last step to make
5207 OpenSSL compilable with DJGPP under all reasonable conditions.
5208 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
5210 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
5211 to allow version independent disabling of normally unselected ciphers,
5212 which may be activated as a side-effect of selecting a single cipher.
5214 (E.g., cipher list string "RSA" enables ciphersuites that are left
5215 out of "ALL" because they do not provide symmetric encryption.
5216 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
5217 [Lutz Jaenicke, Bodo Moeller]
5219 *) Add appropriate support for separate platform-dependent build
5220 directories. The recommended way to make a platform-dependent
5221 build directory is the following (tested on Linux), maybe with
5224 # Place yourself outside of the OpenSSL source tree. In
5225 # this example, the environment variable OPENSSL_SOURCE
5226 # is assumed to contain the absolute OpenSSL source directory.
5227 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
5228 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
5229 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
5230 mkdir -p `dirname $F`
5231 ln -s $OPENSSL_SOURCE/$F $F
5234 To be absolutely sure not to disturb the source tree, a "make clean"
5235 is a good thing. If it isn't successful, don't worry about it,
5236 it probably means the source directory is very clean.
5239 *) Make sure any ENGINE control commands make local copies of string
5240 pointers passed to them whenever necessary. Otherwise it is possible
5241 the caller may have overwritten (or deallocated) the original string
5242 data when a later ENGINE operation tries to use the stored values.
5243 [Götz Babin-Ebell <babinebell@trustcenter.de>]
5245 *) Improve diagnostics in file reading and command-line digests.
5246 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
5248 *) Add AES modes CFB and OFB to the object database. Correct an
5249 error in AES-CFB decryption.
5252 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
5253 allows existing EVP_CIPHER_CTX structures to be reused after
5254 calling EVP_*Final(). This behaviour is used by encryption
5255 BIOs and some applications. This has the side effect that
5256 applications must explicitly clean up cipher contexts with
5257 EVP_CIPHER_CTX_cleanup() or they will leak memory.
5260 *) Check the values of dna and dnb in bn_mul_recursive before calling
5261 bn_mul_comba (a non zero value means the a or b arrays do not contain
5262 n2 elements) and fallback to bn_mul_normal if either is not zero.
5265 *) Fix escaping of non-ASCII characters when using the -subj option
5266 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
5269 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
5270 form for "surname", serialNumber has no short form.
5271 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
5272 therefore remove "mail" short name for "internet 7".
5273 The OID for unique identifiers in X509 certificates is
5274 x500UniqueIdentifier, not uniqueIdentifier.
5275 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
5278 *) Add an "init" command to the ENGINE config module and auto initialize
5279 ENGINEs. Without any "init" command the ENGINE will be initialized
5280 after all ctrl commands have been executed on it. If init=1 the
5281 ENGINE is initailized at that point (ctrls before that point are run
5282 on the uninitialized ENGINE and after on the initialized one). If
5283 init=0 then the ENGINE will not be iniatialized at all.
5286 *) Fix the 'app_verify_callback' interface so that the user-defined
5287 argument is actually passed to the callback: In the
5288 SSL_CTX_set_cert_verify_callback() prototype, the callback
5289 declaration has been changed from
5292 int (*cb)(X509_STORE_CTX *,void *);
5293 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
5294 i=s->ctx->app_verify_callback(&ctx)
5295 has been changed into
5296 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
5298 To update applications using SSL_CTX_set_cert_verify_callback(),
5299 a dummy argument can be added to their callback functions.
5300 [D. K. Smetters <smetters@parc.xerox.com>]
5302 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
5303 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
5305 *) Add and OPENSSL_LOAD_CONF define which will cause
5306 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
5307 This allows older applications to transparently support certain
5308 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
5309 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
5310 load the config file and OPENSSL_add_all_algorithms_conf() which will
5311 always load it have also been added.
5314 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
5315 Adjust NIDs and EVP layer.
5316 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
5318 *) Config modules support in openssl utility.
5320 Most commands now load modules from the config file,
5321 though in a few (such as version) this isn't done
5322 because it couldn't be used for anything.
5324 In the case of ca and req the config file used is
5325 the same as the utility itself: that is the -config
5326 command line option can be used to specify an
5330 *) Move default behaviour from OPENSSL_config(). If appname is NULL
5331 use "openssl_conf" if filename is NULL use default openssl config file.
5334 *) Add an argument to OPENSSL_config() to allow the use of an alternative
5335 config section name. Add a new flag to tolerate a missing config file
5336 and move code to CONF_modules_load_file().
5339 *) Support for crypto accelerator cards from Accelerated Encryption
5340 Processing, www.aep.ie. (Use engine 'aep')
5341 The support was copied from 0.9.6c [engine] and adapted/corrected
5342 to work with the new engine framework.
5343 [AEP Inc. and Richard Levitte]
5345 *) Support for SureWare crypto accelerator cards from Baltimore
5346 Technologies. (Use engine 'sureware')
5347 The support was copied from 0.9.6c [engine] and adapted
5348 to work with the new engine framework.
5351 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
5352 make the newer ENGINE framework commands for the CHIL engine work.
5353 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
5355 *) Make it possible to produce shared libraries on ReliantUNIX.
5356 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
5358 *) Add the configuration target debug-linux-ppro.
5359 Make 'openssl rsa' use the general key loading routines
5360 implemented in apps.c, and make those routines able to
5361 handle the key format FORMAT_NETSCAPE and the variant
5363 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
5365 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
5366 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
5368 *) Add -keyform to rsautl, and document -engine.
5369 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
5371 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
5372 BIO_R_NO_SUCH_FILE error code rather than the generic
5373 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
5376 *) Add new functions
5378 ERR_peek_last_error_line
5379 ERR_peek_last_error_line_data.
5380 These are similar to
5383 ERR_peek_error_line_data,
5384 but report on the latest error recorded rather than the first one
5385 still in the error queue.
5386 [Ben Laurie, Bodo Moeller]
5388 *) default_algorithms option in ENGINE config module. This allows things
5390 default_algorithms = ALL
5391 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
5394 *) Preliminary ENGINE config module.
5397 *) New experimental application configuration code.
5400 *) Change the AES code to follow the same name structure as all other
5401 symmetric ciphers, and behave the same way. Move everything to
5402 the directory crypto/aes, thereby obsoleting crypto/rijndael.
5403 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
5405 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
5406 [Ben Laurie and Theo de Raadt]
5408 *) Add option to output public keys in req command.
5409 [Massimiliano Pala madwolf@openca.org]
5411 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
5412 (up to about 10% better than before for P-192 and P-224).
5415 *) New functions/macros
5417 SSL_CTX_set_msg_callback(ctx, cb)
5418 SSL_CTX_set_msg_callback_arg(ctx, arg)
5419 SSL_set_msg_callback(ssl, cb)
5420 SSL_set_msg_callback_arg(ssl, arg)
5422 to request calling a callback function
5424 void cb(int write_p, int version, int content_type,
5425 const void *buf, size_t len, SSL *ssl, void *arg)
5427 whenever a protocol message has been completely received
5428 (write_p == 0) or sent (write_p == 1). Here 'version' is the
5429 protocol version according to which the SSL library interprets
5430 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
5431 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
5432 the content type as defined in the SSL 3.0/TLS 1.0 protocol
5433 specification (change_cipher_spec(20), alert(21), handshake(22)).
5434 'buf' and 'len' point to the actual message, 'ssl' to the
5435 SSL object, and 'arg' is the application-defined value set by
5436 SSL[_CTX]_set_msg_callback_arg().
5438 'openssl s_client' and 'openssl s_server' have new '-msg' options
5439 to enable a callback that displays all protocol messages.
5442 *) Change the shared library support so shared libraries are built as
5443 soon as the corresponding static library is finished, and thereby get
5444 openssl and the test programs linked against the shared library.
5445 This still only happens when the keyword "shard" has been given to
5446 the configuration scripts.
5448 NOTE: shared library support is still an experimental thing, and
5449 backward binary compatibility is still not guaranteed.
5450 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
5452 *) Add support for Subject Information Access extension.
5453 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
5455 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
5456 additional bytes when new memory had to be allocated, not just
5457 when reusing an existing buffer.
5460 *) New command line and configuration option 'utf8' for the req command.
5461 This allows field values to be specified as UTF8 strings.
5464 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
5465 runs for the former and machine-readable output for the latter.
5468 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
5469 of the e-mail address in the DN (i.e., it will go into a certificate
5470 extension only). The new configuration file option 'email_in_dn = no'
5471 has the same effect.
5472 [Massimiliano Pala madwolf@openca.org]
5474 *) Change all functions with names starting with des_ to be starting
5475 with DES_ instead. Add wrappers that are compatible with libdes,
5476 but are named _ossl_old_des_*. Finally, add macros that map the
5477 des_* symbols to the corresponding _ossl_old_des_* if libdes
5478 compatibility is desired. If OpenSSL 0.9.6c compatibility is
5479 desired, the des_* symbols will be mapped to DES_*, with one
5482 Since we provide two compatibility mappings, the user needs to
5483 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
5484 compatibility is desired. The default (i.e., when that macro
5485 isn't defined) is OpenSSL 0.9.6c compatibility.
5487 There are also macros that enable and disable the support of old
5488 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
5489 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
5490 are defined, the default will apply: to support the old des routines.
5492 In either case, one must include openssl/des.h to get the correct
5493 definitions. Do not try to just include openssl/des_old.h, that
5496 NOTE: This is a major break of an old API into a new one. Software
5497 authors are encouraged to switch to the DES_ style functions. Some
5498 time in the future, des_old.h and the libdes compatibility functions
5499 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
5500 default), and then completely removed.
5503 *) Test for certificates which contain unsupported critical extensions.
5504 If such a certificate is found during a verify operation it is
5505 rejected by default: this behaviour can be overridden by either
5506 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
5507 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
5508 X509_supported_extension() has also been added which returns 1 if a
5509 particular extension is supported.
5512 *) Modify the behaviour of EVP cipher functions in similar way to digests
5513 to retain compatibility with existing code.
5516 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
5517 compatibility with existing code. In particular the 'ctx' parameter does
5518 not have to be to be initialized before the call to EVP_DigestInit() and
5519 it is tidied up after a call to EVP_DigestFinal(). New function
5520 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
5521 EVP_MD_CTX_copy() changed to not require the destination to be
5522 initialized valid and new function EVP_MD_CTX_copy_ex() added which
5523 requires the destination to be valid.
5525 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
5526 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
5529 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
5530 so that complete 'Handshake' protocol structures are kept in memory
5531 instead of overwriting 'msg_type' and 'length' with 'body' data.
5534 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
5535 [Massimo Santin via Richard Levitte]
5537 *) Major restructuring to the underlying ENGINE code. This includes
5538 reduction of linker bloat, separation of pure "ENGINE" manipulation
5539 (initialisation, etc) from functionality dealing with implementations
5540 of specific crypto iterfaces. This change also introduces integrated
5541 support for symmetric ciphers and digest implementations - so ENGINEs
5542 can now accelerate these by providing EVP_CIPHER and EVP_MD
5543 implementations of their own. This is detailed in crypto/engine/README
5544 as it couldn't be adequately described here. However, there are a few
5545 API changes worth noting - some RSA, DSA, DH, and RAND functions that
5546 were changed in the original introduction of ENGINE code have now
5547 reverted back - the hooking from this code to ENGINE is now a good
5548 deal more passive and at run-time, operations deal directly with
5549 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
5550 dereferencing through an ENGINE pointer any more. Also, the ENGINE
5551 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
5552 they were not being used by the framework as there is no concept of a
5553 BIGNUM_METHOD and they could not be generalised to the new
5554 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
5555 ENGINE_cpy() has been removed as it cannot be consistently defined in
5559 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
5562 *) Change mkdef.pl to sort symbols that get the same entry number,
5563 and make sure the automatically generated functions ERR_load_*
5564 become part of libeay.num as well.
5567 *) New function SSL_renegotiate_pending(). This returns true once
5568 renegotiation has been requested (either SSL_renegotiate() call
5569 or HelloRequest/ClientHello received from the peer) and becomes
5570 false once a handshake has been completed.
5571 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
5572 sends a HelloRequest, but does not ensure that a handshake takes
5573 place. SSL_renegotiate_pending() is useful for checking if the
5574 client has followed the request.)
5577 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
5578 By default, clients may request session resumption even during
5579 renegotiation (if session ID contexts permit); with this option,
5580 session resumption is possible only in the first handshake.
5582 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
5583 more bits available for options that should not be part of
5584 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
5587 *) Add some demos for certificate and certificate request creation.
5590 *) Make maximum certificate chain size accepted from the peer application
5591 settable (SSL*_get/set_max_cert_list()), as proposed by
5592 "Douglas E. Engert" <deengert@anl.gov>.
5595 *) Add support for shared libraries for Unixware-7
5596 (Boyd Lynn Gerber <gerberb@zenez.com>).
5599 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
5600 be done prior to destruction. Use this to unload error strings from
5601 ENGINEs that load their own error strings. NB: This adds two new API
5602 functions to "get" and "set" this destroy handler in an ENGINE.
5605 *) Alter all existing ENGINE implementations (except "openssl" and
5606 "openbsd") to dynamically instantiate their own error strings. This
5607 makes them more flexible to be built both as statically-linked ENGINEs
5608 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
5609 Also, add stub code to each that makes building them as self-contained
5610 shared-libraries easier (see README.ENGINE).
5613 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
5614 implementations into applications that are completely implemented in
5615 self-contained shared-libraries. The "dynamic" ENGINE exposes control
5616 commands that can be used to configure what shared-library to load and
5617 to control aspects of the way it is handled. Also, made an update to
5618 the README.ENGINE file that brings its information up-to-date and
5619 provides some information and instructions on the "dynamic" ENGINE
5620 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
5623 *) Make it possible to unload ranges of ERR strings with a new
5624 "ERR_unload_strings" function.
5627 *) Add a copy() function to EVP_MD.
5630 *) Make EVP_MD routines take a context pointer instead of just the
5631 md_data void pointer.
5634 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
5635 that the digest can only process a single chunk of data
5636 (typically because it is provided by a piece of
5637 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
5638 is only going to provide a single chunk of data, and hence the
5639 framework needn't accumulate the data for oneshot drivers.
5642 *) As with "ERR", make it possible to replace the underlying "ex_data"
5643 functions. This change also alters the storage and management of global
5644 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
5645 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
5646 index counters. The API functions that use this state have been changed
5647 to take a "class_index" rather than pointers to the class's local STACK
5648 and counter, and there is now an API function to dynamically create new
5649 classes. This centralisation allows us to (a) plug a lot of the
5650 thread-safety problems that existed, and (b) makes it possible to clean
5651 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
5652 such data would previously have always leaked in application code and
5653 workarounds were in place to make the memory debugging turn a blind eye
5654 to it. Application code that doesn't use this new function will still
5655 leak as before, but their memory debugging output will announce it now
5656 rather than letting it slide.
5658 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
5659 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
5660 has a return value to indicate success or failure.
5663 *) Make it possible to replace the underlying "ERR" functions such that the
5664 global state (2 LHASH tables and 2 locks) is only used by the "default"
5665 implementation. This change also adds two functions to "get" and "set"
5666 the implementation prior to it being automatically set the first time
5667 any other ERR function takes place. Ie. an application can call "get",
5668 pass the return value to a module it has just loaded, and that module
5669 can call its own "set" function using that value. This means the
5670 module's "ERR" operations will use (and modify) the error state in the
5671 application and not in its own statically linked copy of OpenSSL code.
5674 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
5675 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
5676 the operation, and provides a more encapsulated way for external code
5677 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
5678 to use these functions rather than manually incrementing the counts.
5680 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
5683 *) Add EVP test program.
5686 *) Add symmetric cipher support to ENGINE. Expect the API to change!
5689 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
5690 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
5691 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
5692 These allow a CRL to be built without having to access X509_CRL fields
5693 directly. Modify 'ca' application to use new functions.
5696 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
5697 bug workarounds. Rollback attack detection is a security feature.
5698 The problem will only arise on OpenSSL servers when TLSv1 is not
5699 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
5700 Software authors not wanting to support TLSv1 will have special reasons
5701 for their choice and can explicitly enable this option.
5702 [Bodo Moeller, Lutz Jaenicke]
5704 *) Rationalise EVP so it can be extended: don't include a union of
5705 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
5706 (similar to those existing for EVP_CIPHER_CTX).
5711 EVP_MD_CTX_init(&md); /* new function call */
5712 EVP_DigestInit(&md, EVP_sha1());
5713 EVP_DigestUpdate(&md, in, len);
5714 EVP_DigestFinal(&md, out, NULL);
5715 EVP_MD_CTX_cleanup(&md); /* new function call */
5719 *) Make DES key schedule conform to the usual scheme, as well as
5720 correcting its structure. This means that calls to DES functions
5721 now have to pass a pointer to a des_key_schedule instead of a
5722 plain des_key_schedule (which was actually always a pointer
5725 des_key_schedule ks;
5727 des_set_key_checked(..., &ks);
5728 des_ncbc_encrypt(..., &ks, ...);
5730 (Note that a later change renames 'des_...' into 'DES_...'.)
5733 *) Initial reduction of linker bloat: the use of some functions, such as
5734 PEM causes large amounts of unused functions to be linked in due to
5735 poor organisation. For example pem_all.c contains every PEM function
5736 which has a knock on effect of linking in large amounts of (unused)
5737 ASN1 code. Grouping together similar functions and splitting unrelated
5738 functions prevents this.
5741 *) Cleanup of EVP macros.
5744 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
5745 correct _ecb suffix.
5748 *) Add initial OCSP responder support to ocsp application. The
5749 revocation information is handled using the text based index
5750 use by the ca application. The responder can either handle
5751 requests generated internally, supplied in files (for example
5752 via a CGI script) or using an internal minimal server.
5755 *) Add configuration choices to get zlib compression for TLS.
5758 *) Changes to Kerberos SSL for RFC 2712 compliance:
5759 1. Implemented real KerberosWrapper, instead of just using
5760 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
5761 2. Implemented optional authenticator field of KerberosWrapper.
5763 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
5764 and authenticator structs; see crypto/krb5/.
5766 Generalized Kerberos calls to support multiple Kerberos libraries.
5767 [Vern Staats <staatsvr@asc.hpc.mil>,
5768 Jeffrey Altman <jaltman@columbia.edu>
5769 via Richard Levitte]
5771 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
5772 already does with RSA. testdsa.h now has 'priv_key/pub_key'
5773 values for each of the key sizes rather than having just
5774 parameters (and 'speed' generating keys each time).
5777 *) Speed up EVP routines.
5780 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
5781 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
5782 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
5783 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
5785 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
5786 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
5787 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
5790 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
5792 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
5795 *) Added the OS2-EMX target.
5796 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
5798 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
5799 to support NCONF routines in extension code. New function CONF_set_nconf()
5800 to allow functions which take an NCONF to also handle the old LHASH
5801 structure: this means that the old CONF compatible routines can be
5802 retained (in particular wrt extensions) without having to duplicate the
5803 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
5806 *) Enhance the general user interface with mechanisms for inner control
5807 and with possibilities to have yes/no kind of prompts.
5810 *) Change all calls to low level digest routines in the library and
5811 applications to use EVP. Add missing calls to HMAC_cleanup() and
5812 don't assume HMAC_CTX can be copied using memcpy().
5813 [Verdon Walker <VWalker@novell.com>, Steve Henson]
5815 *) Add the possibility to control engines through control names but with
5816 arbitrary arguments instead of just a string.
5817 Change the key loaders to take a UI_METHOD instead of a callback
5818 function pointer. NOTE: this breaks binary compatibility with earlier
5819 versions of OpenSSL [engine].
5820 Adapt the nCipher code for these new conditions and add a card insertion
5824 *) Enhance the general user interface with mechanisms to better support
5825 dialog box interfaces, application-defined prompts, the possibility
5826 to use defaults (for example default passwords from somewhere else)
5827 and interrupts/cancellations.
5830 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
5831 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
5834 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
5835 tidy up some unnecessarily weird code in 'sk_new()').
5836 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
5838 *) Change the key loading routines for ENGINEs to use the same kind
5839 callback (pem_password_cb) as all other routines that need this
5843 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
5844 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
5845 than this minimum value is recommended.
5848 *) New random seeder for OpenVMS, using the system process statistics
5849 that are easily reachable.
5852 *) Windows apparently can't transparently handle global
5853 variables defined in DLLs. Initialisations such as:
5855 const ASN1_ITEM *it = &ASN1_INTEGER_it;
5857 wont compile. This is used by the any applications that need to
5858 declare their own ASN1 modules. This was fixed by adding the option
5859 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
5860 needed for static libraries under Win32.
5863 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
5864 setting of purpose and trust fields. New X509_STORE trust and
5865 purpose functions and tidy up setting in other SSL functions.
5868 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
5869 structure. These are inherited by X509_STORE_CTX when it is
5870 initialised. This allows various defaults to be set in the
5871 X509_STORE structure (such as flags for CRL checking and custom
5872 purpose or trust settings) for functions which only use X509_STORE_CTX
5873 internally such as S/MIME.
5875 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
5876 trust settings if they are not set in X509_STORE. This allows X509_STORE
5877 purposes and trust (in S/MIME for example) to override any set by default.
5879 Add command line options for CRL checking to smime, s_client and s_server
5883 *) Initial CRL based revocation checking. If the CRL checking flag(s)
5884 are set then the CRL is looked up in the X509_STORE structure and
5885 its validity and signature checked, then if the certificate is found
5886 in the CRL the verify fails with a revoked error.
5888 Various new CRL related callbacks added to X509_STORE_CTX structure.
5890 Command line options added to 'verify' application to support this.
5892 This needs some additional work, such as being able to handle multiple
5893 CRLs with different times, extension based lookup (rather than just
5894 by subject name) and ultimately more complete V2 CRL extension
5898 *) Add a general user interface API (crypto/ui/). This is designed
5899 to replace things like des_read_password and friends (backward
5900 compatibility functions using this new API are provided).
5901 The purpose is to remove prompting functions from the DES code
5902 section as well as provide for prompting through dialog boxes in
5903 a window system and the like.
5906 *) Add "ex_data" support to ENGINE so implementations can add state at a
5907 per-structure level rather than having to store it globally.
5910 *) Make it possible for ENGINE structures to be copied when retrieved by
5911 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
5912 This causes the "original" ENGINE structure to act like a template,
5913 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
5914 operational state can be localised to each ENGINE structure, despite the
5915 fact they all share the same "methods". New ENGINE structures returned in
5916 this case have no functional references and the return value is the single
5917 structural reference. This matches the single structural reference returned
5918 by ENGINE_by_id() normally, when it is incremented on the pre-existing
5922 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
5923 needs to match any other type at all we need to manually clear the
5927 *) Changes to the "openssl engine" utility to include;
5928 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
5929 about an ENGINE's available control commands.
5930 - executing control commands from command line arguments using the
5931 '-pre' and '-post' switches. '-post' is only used if '-t' is
5932 specified and the ENGINE is successfully initialised. The syntax for
5933 the individual commands are colon-separated, for example;
5934 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
5937 *) New dynamic control command support for ENGINEs. ENGINEs can now
5938 declare their own commands (numbers), names (strings), descriptions,
5939 and input types for run-time discovery by calling applications. A
5940 subset of these commands are implicitly classed as "executable"
5941 depending on their input type, and only these can be invoked through
5942 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
5943 can be based on user input, config files, etc). The distinction is
5944 that "executable" commands cannot return anything other than a boolean
5945 result and can only support numeric or string input, whereas some
5946 discoverable commands may only be for direct use through
5947 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
5948 pointers, or other custom uses. The "executable" commands are to
5949 support parameterisations of ENGINE behaviour that can be
5950 unambiguously defined by ENGINEs and used consistently across any
5951 OpenSSL-based application. Commands have been added to all the
5952 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
5953 control over shared-library paths without source code alterations.
5956 *) Changed all ENGINE implementations to dynamically allocate their
5957 ENGINEs rather than declaring them statically. Apart from this being
5958 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
5959 this also allows the implementations to compile without using the
5960 internal engine_int.h header.
5963 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
5964 'const' value. Any code that should be able to modify a RAND_METHOD
5965 should already have non-const pointers to it (ie. they should only
5966 modify their own ones).
5969 *) Made a variety of little tweaks to the ENGINE code.
5970 - "atalla" and "ubsec" string definitions were moved from header files
5971 to C code. "nuron" string definitions were placed in variables
5972 rather than hard-coded - allowing parameterisation of these values
5973 later on via ctrl() commands.
5974 - Removed unused "#if 0"'d code.
5975 - Fixed engine list iteration code so it uses ENGINE_free() to release
5976 structural references.
5977 - Constified the RAND_METHOD element of ENGINE structures.
5978 - Constified various get/set functions as appropriate and added
5979 missing functions (including a catch-all ENGINE_cpy that duplicates
5980 all ENGINE values onto a new ENGINE except reference counts/state).
5981 - Removed NULL parameter checks in get/set functions. Setting a method
5982 or function to NULL is a way of cancelling out a previously set
5983 value. Passing a NULL ENGINE parameter is just plain stupid anyway
5984 and doesn't justify the extra error symbols and code.
5985 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
5986 flags from engine_int.h to engine.h.
5987 - Changed prototypes for ENGINE handler functions (init(), finish(),
5988 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
5991 *) Implement binary inversion algorithm for BN_mod_inverse in addition
5992 to the algorithm using long division. The binary algorithm can be
5993 used only if the modulus is odd. On 32-bit systems, it is faster
5994 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
5995 roughly 5-15% for 256-bit moduli), so we use it only for moduli
5996 up to 450 bits. In 64-bit environments, the binary algorithm
5997 appears to be advantageous for much longer moduli; here we use it
5998 for moduli up to 2048 bits.
6001 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
6002 could not support the combine flag in choice fields.
6005 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
6006 extensions from a certificate request to the certificate.
6009 *) Allow multiple 'certopt' and 'nameopt' options to be separated
6010 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
6011 file: this allows the display of the certificate about to be
6012 signed to be customised, to allow certain fields to be included
6013 or excluded and extension details. The old system didn't display
6014 multicharacter strings properly, omitted fields not in the policy
6015 and couldn't display additional details such as extensions.
6018 *) Function EC_POINTs_mul for multiple scalar multiplication
6019 of an arbitrary number of elliptic curve points
6020 \sum scalars[i]*points[i],
6021 optionally including the generator defined for the EC_GROUP:
6022 scalar*generator + \sum scalars[i]*points[i].
6024 EC_POINT_mul is a simple wrapper function for the typical case
6025 that the point list has just one item (besides the optional
6029 *) First EC_METHODs for curves over GF(p):
6031 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
6032 operations and provides various method functions that can also
6033 operate with faster implementations of modular arithmetic.
6035 EC_GFp_mont_method() reuses most functions that are part of
6036 EC_GFp_simple_method, but uses Montgomery arithmetic.
6038 [Bodo Moeller; point addition and point doubling
6039 implementation directly derived from source code provided by
6040 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
6042 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
6043 crypto/ec/ec_lib.c):
6045 Curves are EC_GROUP objects (with an optional group generator)
6046 based on EC_METHODs that are built into the library.
6048 Points are EC_POINT objects based on EC_GROUP objects.
6050 Most of the framework would be able to handle curves over arbitrary
6051 finite fields, but as there are no obvious types for fields other
6052 than GF(p), some functions are limited to that for now.
6055 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
6056 that the file contains a complete HTTP response.
6059 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
6060 change the def and num file printf format specifier from "%-40sXXX"
6061 to "%-39s XXX". The latter will always guarantee a space after the
6062 field while the former will cause them to run together if the field
6063 is 40 of more characters long.
6066 *) Constify the cipher and digest 'method' functions and structures
6067 and modify related functions to take constant EVP_MD and EVP_CIPHER
6071 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
6072 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
6075 *) Modify EVP_Digest*() routines so they now return values. Although the
6076 internal software routines can never fail additional hardware versions
6080 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
6082 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
6083 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
6086 ERR_R_NESTED_ASN1_ERROR
6088 ERR_R_MISSING_ASN1_EOS
6089 were 4 .. 9, conflicting with
6090 ERR_LIB_RSA (= ERR_R_RSA_LIB)
6092 ERR_LIB_PEM (= ERR_R_PEM_LIB).
6093 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
6095 Add new error code 'ERR_R_INTERNAL_ERROR'.
6098 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
6102 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
6103 sets the subject name for a new request or supersedes the
6104 subject name in a given request. Formats that can be parsed are
6105 'CN=Some Name, OU=myOU, C=IT'
6107 'CN=Some Name/OU=myOU/C=IT'.
6109 Add options '-batch' and '-verbose' to 'openssl req'.
6110 [Massimiliano Pala <madwolf@hackmasters.net>]
6112 *) Introduce the possibility to access global variables through
6113 functions on platform were that's the best way to handle exporting
6114 global variables in shared libraries. To enable this functionality,
6115 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
6116 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
6117 is normally done by Configure or something similar).
6119 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
6120 in the source file (foo.c) like this:
6122 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
6123 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
6125 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
6126 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
6128 OPENSSL_DECLARE_GLOBAL(int,foo);
6129 #define foo OPENSSL_GLOBAL_REF(foo)
6130 OPENSSL_DECLARE_GLOBAL(double,bar);
6131 #define bar OPENSSL_GLOBAL_REF(bar)
6133 The #defines are very important, and therefore so is including the
6134 header file everywhere where the defined globals are used.
6136 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
6137 of ASN.1 items, but that structure is a bit different.
6139 The largest change is in util/mkdef.pl which has been enhanced with
6140 better and easier to understand logic to choose which symbols should
6141 go into the Windows .def files as well as a number of fixes and code
6142 cleanup (among others, algorithm keywords are now sorted
6143 lexicographically to avoid constant rewrites).
6146 *) In BN_div() keep a copy of the sign of 'num' before writing the
6147 result to 'rm' because if rm==num the value will be overwritten
6148 and produce the wrong result if 'num' is negative: this caused
6149 problems with BN_mod() and BN_nnmod().
6152 *) Function OCSP_request_verify(). This checks the signature on an
6153 OCSP request and verifies the signer certificate. The signer
6154 certificate is just checked for a generic purpose and OCSP request
6158 *) Add OCSP_check_validity() function to check the validity of OCSP
6159 responses. OCSP responses are prepared in real time and may only
6160 be a few seconds old. Simply checking that the current time lies
6161 between thisUpdate and nextUpdate max reject otherwise valid responses
6162 caused by either OCSP responder or client clock inaccuracy. Instead
6163 we allow thisUpdate and nextUpdate to fall within a certain period of
6164 the current time. The age of the response can also optionally be
6165 checked. Two new options -validity_period and -status_age added to
6169 *) If signature or public key algorithm is unrecognized print out its
6170 OID rather that just UNKNOWN.
6173 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
6174 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
6175 ID to be generated from the issuer certificate alone which can then be
6176 passed to OCSP_id_issuer_cmp().
6179 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
6180 ASN1 modules to export functions returning ASN1_ITEM pointers
6181 instead of the ASN1_ITEM structures themselves. This adds several
6182 new macros which allow the underlying ASN1 function/structure to
6183 be accessed transparently. As a result code should not use ASN1_ITEM
6184 references directly (such as &X509_it) but instead use the relevant
6185 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
6186 use of the new ASN1 code on platforms where exporting structures
6187 is problematical (for example in shared libraries) but exporting
6188 functions returning pointers to structures is not.
6191 *) Add support for overriding the generation of SSL/TLS session IDs.
6192 These callbacks can be registered either in an SSL_CTX or per SSL.
6193 The purpose of this is to allow applications to control, if they wish,
6194 the arbitrary values chosen for use as session IDs, particularly as it
6195 can be useful for session caching in multiple-server environments. A
6196 command-line switch for testing this (and any client code that wishes
6197 to use such a feature) has been added to "s_server".
6198 [Geoff Thorpe, Lutz Jaenicke]
6200 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
6201 of the form '#if defined(...) || defined(...) || ...' and
6202 '#if !defined(...) && !defined(...) && ...'. This also avoids
6203 the growing number of special cases it was previously handling.
6206 *) Make all configuration macros available for application by making
6207 sure they are available in opensslconf.h, by giving them names starting
6208 with "OPENSSL_" to avoid conflicts with other packages and by making
6209 sure e_os2.h will cover all platform-specific cases together with
6211 Additionally, it is now possible to define configuration/platform-
6212 specific names (called "system identities"). In the C code, these
6213 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
6214 macro with the name beginning with "OPENSSL_SYS_", which is determined
6215 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
6219 *) New option -set_serial to 'req' and 'x509' this allows the serial
6220 number to use to be specified on the command line. Previously self
6221 signed certificates were hard coded with serial number 0 and the
6222 CA options of 'x509' had to use a serial number in a file which was
6226 *) New options to 'ca' utility to support V2 CRL entry extensions.
6227 Currently CRL reason, invalidity date and hold instruction are
6228 supported. Add new CRL extensions to V3 code and some new objects.
6231 *) New function EVP_CIPHER_CTX_set_padding() this is used to
6232 disable standard block padding (aka PKCS#5 padding) in the EVP
6233 API, which was previously mandatory. This means that the data is
6234 not padded in any way and so the total length much be a multiple
6235 of the block size, otherwise an error occurs.
6238 *) Initial (incomplete) OCSP SSL support.
6241 *) New function OCSP_parse_url(). This splits up a URL into its host,
6242 port and path components: primarily to parse OCSP URLs. New -url
6243 option to ocsp utility.
6246 *) New nonce behavior. The return value of OCSP_check_nonce() now
6247 reflects the various checks performed. Applications can decide
6248 whether to tolerate certain situations such as an absent nonce
6249 in a response when one was present in a request: the ocsp application
6250 just prints out a warning. New function OCSP_add1_basic_nonce()
6251 this is to allow responders to include a nonce in a response even if
6252 the request is nonce-less.
6255 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
6256 skipped when using openssl x509 multiple times on a single input file,
6257 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
6260 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
6261 set string type: to handle setting ASN1_TIME structures. Fix ca
6262 utility to correctly initialize revocation date of CRLs.
6265 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
6266 the clients preferred ciphersuites and rather use its own preferences.
6267 Should help to work around M$ SGC (Server Gated Cryptography) bug in
6268 Internet Explorer by ensuring unchanged hash method during stepup.
6269 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
6272 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
6273 to aes and add a new 'exist' option to print out symbols that don't
6277 *) Additional options to ocsp utility to allow flags to be set and
6278 additional certificates supplied.
6281 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
6282 OCSP client a number of certificate to only verify the response
6286 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
6287 handle the new API. Currently only ECB, CBC modes supported. Add new
6290 Add TLS AES ciphersuites as described in RFC3268, "Advanced
6291 Encryption Standard (AES) Ciphersuites for Transport Layer
6292 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
6293 not enabled by default and were not part of the "ALL" ciphersuite
6294 alias because they were not yet official; they could be
6295 explicitly requested by specifying the "AESdraft" ciphersuite
6296 group alias. In the final release of OpenSSL 0.9.7, the group
6297 alias is called "AES" and is part of "ALL".)
6298 [Ben Laurie, Steve Henson, Bodo Moeller]
6300 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
6301 request to response.
6304 *) Functions for OCSP responders. OCSP_request_onereq_count(),
6305 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
6306 extract information from a certificate request. OCSP_response_create()
6307 creates a response and optionally adds a basic response structure.
6308 OCSP_basic_add1_status() adds a complete single response to a basic
6309 response and returns the OCSP_SINGLERESP structure just added (to allow
6310 extensions to be included for example). OCSP_basic_add1_cert() adds a
6311 certificate to a basic response and OCSP_basic_sign() signs a basic
6312 response with various flags. New helper functions ASN1_TIME_check()
6313 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
6314 (converts ASN1_TIME to GeneralizedTime).
6317 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
6318 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
6319 structure from a certificate. X509_pubkey_digest() digests the public_key
6320 contents: this is used in various key identifiers.
6323 *) Make sk_sort() tolerate a NULL argument.
6324 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
6326 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
6327 passed by the function are trusted implicitly. If any of them signed the
6328 response then it is assumed to be valid and is not verified.
6331 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
6332 to data. This was previously part of the PKCS7 ASN1 code. This
6333 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
6334 [Steve Henson, reported by Kenneth R. Robinette
6335 <support@securenetterm.com>]
6337 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
6338 routines: without these tracing memory leaks is very painful.
6339 Fix leaks in PKCS12 and PKCS7 routines.
6342 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
6343 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
6344 effectively meant GeneralizedTime would never be used. Now it
6345 is initialised to -1 but X509_time_adj() now has to check the value
6346 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
6347 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
6348 [Steve Henson, reported by Kenneth R. Robinette
6349 <support@securenetterm.com>]
6351 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
6352 result in a zero length in the ASN1_INTEGER structure which was
6353 not consistent with the structure when d2i_ASN1_INTEGER() was used
6354 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
6355 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
6356 where it did not print out a minus for negative ASN1_INTEGER.
6359 *) Add summary printout to ocsp utility. The various functions which
6360 convert status values to strings have been renamed to:
6361 OCSP_response_status_str(), OCSP_cert_status_str() and
6362 OCSP_crl_reason_str() and are no longer static. New options
6363 to verify nonce values and to disable verification. OCSP response
6364 printout format cleaned up.
6367 *) Add additional OCSP certificate checks. These are those specified
6368 in RFC2560. This consists of two separate checks: the CA of the
6369 certificate being checked must either be the OCSP signer certificate
6370 or the issuer of the OCSP signer certificate. In the latter case the
6371 OCSP signer certificate must contain the OCSP signing extended key
6372 usage. This check is performed by attempting to match the OCSP
6373 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
6374 in the OCSP_CERTID structures of the response.
6377 *) Initial OCSP certificate verification added to OCSP_basic_verify()
6378 and related routines. This uses the standard OpenSSL certificate
6379 verify routines to perform initial checks (just CA validity) and
6380 to obtain the certificate chain. Then additional checks will be
6381 performed on the chain. Currently the root CA is checked to see
6382 if it is explicitly trusted for OCSP signing. This is used to set
6383 a root CA as a global signing root: that is any certificate that
6384 chains to that CA is an acceptable OCSP signing certificate.
6387 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
6388 extensions from a separate configuration file.
6389 As when reading extensions from the main configuration file,
6390 the '-extensions ...' option may be used for specifying the
6392 [Massimiliano Pala <madwolf@comune.modena.it>]
6394 *) New OCSP utility. Allows OCSP requests to be generated or
6395 read. The request can be sent to a responder and the output
6396 parsed, outputed or printed in text form. Not complete yet:
6397 still needs to check the OCSP response validity.
6400 *) New subcommands for 'openssl ca':
6401 'openssl ca -status <serial>' prints the status of the cert with
6402 the given serial number (according to the index file).
6403 'openssl ca -updatedb' updates the expiry status of certificates
6405 [Massimiliano Pala <madwolf@comune.modena.it>]
6407 *) New '-newreq-nodes' command option to CA.pl. This is like
6408 '-newreq', but calls 'openssl req' with the '-nodes' option
6409 so that the resulting key is not encrypted.
6410 [Damien Miller <djm@mindrot.org>]
6412 *) New configuration for the GNU Hurd.
6413 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
6415 *) Initial code to implement OCSP basic response verify. This
6416 is currently incomplete. Currently just finds the signer's
6417 certificate and verifies the signature on the response.
6420 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
6421 value of OPENSSLDIR. This is available via the new '-d' option
6422 to 'openssl version', and is also included in 'openssl version -a'.
6425 *) Allowing defining memory allocation callbacks that will be given
6426 file name and line number information in additional arguments
6427 (a const char* and an int). The basic functionality remains, as
6428 well as the original possibility to just replace malloc(),
6429 realloc() and free() by functions that do not know about these
6430 additional arguments. To register and find out the current
6431 settings for extended allocation functions, the following
6432 functions are provided:
6434 CRYPTO_set_mem_ex_functions
6435 CRYPTO_set_locked_mem_ex_functions
6436 CRYPTO_get_mem_ex_functions
6437 CRYPTO_get_locked_mem_ex_functions
6439 These work the same way as CRYPTO_set_mem_functions and friends.
6440 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
6441 extended allocation function is enabled.
6442 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
6443 a conventional allocation function is enabled.
6444 [Richard Levitte, Bodo Moeller]
6446 *) Finish off removing the remaining LHASH function pointer casts.
6447 There should no longer be any prototype-casting required when using
6448 the LHASH abstraction, and any casts that remain are "bugs". See
6449 the callback types and macros at the head of lhash.h for details
6450 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
6453 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
6454 If /dev/[u]random devices are not available or do not return enough
6455 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
6457 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
6458 /etc/entropy will be queried once each in this sequence, quering stops
6459 when enough entropy was collected without querying more sockets.
6462 *) Change the Unix RAND_poll() variant to be able to poll several
6463 random devices, as specified by DEVRANDOM, until a sufficient amount
6464 of data has been collected. We spend at most 10 ms on each file
6465 (select timeout) and read in non-blocking mode. DEVRANDOM now
6466 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
6467 (previously it was just the string "/dev/urandom"), so on typical
6468 platforms the 10 ms delay will never occur.
6469 Also separate out the Unix variant to its own file, rand_unix.c.
6470 For VMS, there's a currently-empty rand_vms.c.
6473 *) Move OCSP client related routines to ocsp_cl.c. These
6474 provide utility functions which an application needing
6475 to issue a request to an OCSP responder and analyse the
6476 response will typically need: as opposed to those which an
6477 OCSP responder itself would need which will be added later.
6479 OCSP_request_sign() signs an OCSP request with an API similar
6480 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
6481 response. OCSP_response_get1_basic() extracts basic response
6482 from response. OCSP_resp_find_status(): finds and extracts status
6483 information from an OCSP_CERTID structure (which will be created
6484 when the request structure is built). These are built from lower
6485 level functions which work on OCSP_SINGLERESP structures but
6486 wont normally be used unless the application wishes to examine
6487 extensions in the OCSP response for example.
6489 Replace nonce routines with a pair of functions.
6490 OCSP_request_add1_nonce() adds a nonce value and optionally
6491 generates a random value. OCSP_check_nonce() checks the
6492 validity of the nonce in an OCSP response.
6495 *) Change function OCSP_request_add() to OCSP_request_add0_id().
6496 This doesn't copy the supplied OCSP_CERTID and avoids the
6497 need to free up the newly created id. Change return type
6498 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
6499 This can then be used to add extensions to the request.
6500 Deleted OCSP_request_new(), since most of its functionality
6501 is now in OCSP_REQUEST_new() (and the case insensitive name
6502 clash) apart from the ability to set the request name which
6503 will be added elsewhere.
6506 *) Update OCSP API. Remove obsolete extensions argument from
6507 various functions. Extensions are now handled using the new
6508 OCSP extension code. New simple OCSP HTTP function which
6509 can be used to send requests and parse the response.
6512 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
6513 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
6514 uses the special reorder version of SET OF to sort the attributes
6515 and reorder them to match the encoded order. This resolves a long
6516 standing problem: a verify on a PKCS7 structure just after signing
6517 it used to fail because the attribute order did not match the
6518 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
6519 it uses the received order. This is necessary to tolerate some broken
6520 software that does not order SET OF. This is handled by encoding
6521 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
6522 to produce the required SET OF.
6525 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
6526 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
6527 files to get correct declarations of the ASN.1 item variables.
6530 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
6531 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
6532 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
6533 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
6534 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
6535 ASN1_ITEM and no wrapper functions.
6538 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
6539 replace the old function pointer based I/O routines. Change most of
6540 the *_d2i_bio() and *_d2i_fp() functions to use these.
6543 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
6544 lines, recognice more "algorithms" that can be deselected, and make
6545 it complain about algorithm deselection that isn't recognised.
6548 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
6549 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
6550 to use new functions. Add NO_ASN1_OLD which can be set to remove
6551 some old style ASN1 functions: this can be used to determine if old
6552 code will still work when these eventually go away.
6555 *) New extension functions for OCSP structures, these follow the
6556 same conventions as certificates and CRLs.
6559 *) New function X509V3_add1_i2d(). This automatically encodes and
6560 adds an extension. Its behaviour can be customised with various
6561 flags to append, replace or delete. Various wrappers added for
6562 certifcates and CRLs.
6565 *) Fix to avoid calling the underlying ASN1 print routine when
6566 an extension cannot be parsed. Correct a typo in the
6567 OCSP_SERVICELOC extension. Tidy up print OCSP format.
6570 *) Make mkdef.pl parse some of the ASN1 macros and add appropriate
6571 entries for variables.
6574 *) Add functionality to apps/openssl.c for detecting locking
6575 problems: As the program is single-threaded, all we have
6576 to do is register a locking callback using an array for
6577 storing which locks are currently held by the program.
6580 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
6581 SSL_get_ex_data_X509_STORE_idx(), which is used in
6582 ssl_verify_cert_chain() and thus can be called at any time
6583 during TLS/SSL handshakes so that thread-safety is essential.
6584 Unfortunately, the ex_data design is not at all suited
6585 for multi-threaded use, so it probably should be abolished.
6588 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
6589 [Broadcom, tweaked and integrated by Geoff Thorpe]
6591 *) Move common extension printing code to new function
6592 X509V3_print_extensions(). Reorganise OCSP print routines and
6593 implement some needed OCSP ASN1 functions. Add OCSP extensions.
6596 *) New function X509_signature_print() to remove duplication in some
6600 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
6601 set (this was treated exactly the same as SET OF previously). This
6602 is used to reorder the STACK representing the structure to match the
6603 encoding. This will be used to get round a problem where a PKCS7
6604 structure which was signed could not be verified because the STACK
6605 order did not reflect the encoded order.
6608 *) Reimplement the OCSP ASN1 module using the new code.
6611 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
6612 for its ASN1 operations. The old style function pointers still exist
6613 for now but they will eventually go away.
6616 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
6617 completely replaces the old ASN1 functionality with a table driven
6618 encoder and decoder which interprets an ASN1_ITEM structure describing
6619 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
6620 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
6621 has also been converted to the new form.
6624 *) Change BN_mod_exp_recp so that negative moduli are tolerated
6625 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
6626 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
6627 for negative moduli.
6630 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
6631 of not touching the result's sign bit.
6634 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
6638 *) Changed the LHASH code to use prototypes for callbacks, and created
6639 macros to declare and implement thin (optionally static) functions
6640 that provide type-safety and avoid function pointer casting for the
6641 type-specific callbacks.
6644 *) Added Kerberos Cipher Suites to be used with TLS, as written in
6646 [Veers Staats <staatsvr@asc.hpc.mil>,
6647 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
6649 *) Reformat the FAQ so the different questions and answers can be divided
6650 in sections depending on the subject.
6653 *) Have the zlib compression code load ZLIB.DLL dynamically under
6657 *) New function BN_mod_sqrt for computing square roots modulo a prime
6658 (using the probabilistic Tonelli-Shanks algorithm unless
6659 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
6660 be handled deterministically).
6661 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
6663 *) Make BN_mod_inverse faster by explicitly handling small quotients
6664 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
6665 512 bits], about 30% for larger ones [1024 or 2048 bits].)
6668 *) New function BN_kronecker.
6671 *) Fix BN_gcd so that it works on negative inputs; the result is
6672 positive unless both parameters are zero.
6673 Previously something reasonably close to an infinite loop was
6674 possible because numbers could be growing instead of shrinking
6675 in the implementation of Euclid's algorithm.
6678 *) Fix BN_is_word() and BN_is_one() macros to take into account the
6679 sign of the number in question.
6681 Fix BN_is_word(a,w) to work correctly for w == 0.
6683 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
6684 because its test if the absolute value of 'a' equals 'w'.
6685 Note that BN_abs_is_word does *not* handle w == 0 reliably;
6686 it exists mostly for use in the implementations of BN_is_zero(),
6687 BN_is_one(), and BN_is_word().
6690 *) New function BN_swap.
6693 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
6694 the exponentiation functions are more likely to produce reasonable
6695 results on negative inputs.
6698 *) Change BN_mod_mul so that the result is always non-negative.
6699 Previously, it could be negative if one of the factors was negative;
6700 I don't think anyone really wanted that behaviour.
6703 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
6704 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
6705 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
6706 and add new functions:
6715 BN_mod_lshift1_quick
6719 These functions always generate non-negative results.
6721 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
6722 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
6724 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
6725 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
6726 be reduced modulo m.
6727 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
6730 The following entry accidentally appeared in the CHANGES file
6731 distributed with OpenSSL 0.9.7. The modifications described in
6732 it do *not* apply to OpenSSL 0.9.7.
6734 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
6735 was actually never needed) and in BN_mul(). The removal in BN_mul()
6736 required a small change in bn_mul_part_recursive() and the addition
6737 of the functions bn_cmp_part_words(), bn_sub_part_words() and
6738 bn_add_part_words(), which do the same thing as bn_cmp_words(),
6739 bn_sub_words() and bn_add_words() except they take arrays with
6744 *) In 'openssl passwd', verify passwords read from the terminal
6745 unless the '-salt' option is used (which usually means that
6746 verification would just waste user's time since the resulting
6747 hash is going to be compared with some given password hash)
6748 or the new '-noverify' option is used.
6750 This is an incompatible change, but it does not affect
6751 non-interactive use of 'openssl passwd' (passwords on the command
6752 line, '-stdin' option, '-in ...' option) and thus should not
6756 *) Remove all references to RSAref, since there's no more need for it.
6759 *) Make DSO load along a path given through an environment variable
6760 (SHLIB_PATH) with shl_load().
6763 *) Constify the ENGINE code as a result of BIGNUM constification.
6764 Also constify the RSA code and most things related to it. In a
6765 few places, most notable in the depth of the ASN.1 code, ugly
6766 casts back to non-const were required (to be solved at a later
6770 *) Make it so the openssl application has all engines loaded by default.
6773 *) Constify the BIGNUM routines a little more.
6776 *) Add the following functions:
6778 ENGINE_load_cswift()
6780 ENGINE_load_atalla()
6782 ENGINE_load_builtin_engines()
6784 That way, an application can itself choose if external engines that
6785 are built-in in OpenSSL shall ever be used or not. The benefit is
6786 that applications won't have to be linked with libdl or other dso
6787 libraries unless it's really needed.
6789 Changed 'openssl engine' to load all engines on demand.
6790 Changed the engine header files to avoid the duplication of some
6791 declarations (they differed!).
6794 *) 'openssl engine' can now list capabilities.
6797 *) Better error reporting in 'openssl engine'.
6800 *) Never call load_dh_param(NULL) in s_server.
6803 *) Add engine application. It can currently list engines by name and
6804 identity, and test if they are actually available.
6807 *) Improve RPM specification file by forcing symbolic linking and making
6808 sure the installed documentation is also owned by root.root.
6809 [Damien Miller <djm@mindrot.org>]
6811 *) Give the OpenSSL applications more possibilities to make use of
6812 keys (public as well as private) handled by engines.
6815 *) Add OCSP code that comes from CertCo.
6818 *) Add VMS support for the Rijndael code.
6821 *) Added untested support for Nuron crypto accelerator.
6824 *) Add support for external cryptographic devices. This code was
6825 previously distributed separately as the "engine" branch.
6826 [Geoff Thorpe, Richard Levitte]
6828 *) Rework the filename-translation in the DSO code. It is now possible to
6829 have far greater control over how a "name" is turned into a filename
6830 depending on the operating environment and any oddities about the
6831 different shared library filenames on each system.
6834 *) Support threads on FreeBSD-elf in Configure.
6837 *) Fix for SHA1 assembly problem with MASM: it produces
6838 warnings about corrupt line number information when assembling
6839 with debugging information. This is caused by the overlapping
6841 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
6844 NCONF_get_number() has no error checking at all. As a replacement,
6845 NCONF_get_number_e() is defined (_e for "error checking") and is
6846 promoted strongly. The old NCONF_get_number is kept around for
6847 binary backward compatibility.
6848 Make it possible for methods to load from something other than a BIO,
6849 by providing a function pointer that is given a name instead of a BIO.
6850 For example, this could be used to load configuration data from an
6854 *) Fix for non blocking accept BIOs. Added new I/O special reason
6855 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
6856 with non blocking I/O was not possible because no retry code was
6857 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
6861 *) Added the beginnings of Rijndael support.
6864 *) Fix for bug in DirectoryString mask setting. Add support for
6865 X509_NAME_print_ex() in 'req' and X509_print_ex() function
6866 to allow certificate printing to more controllable, additional
6867 'certopt' option to 'x509' to allow new printing options to be
6871 *) Clean old EAY MD5 hack from e_os.h.
6874 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
6876 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
6877 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
6878 [Joe Orton, Steve Henson]
6880 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
6882 *) Fix additional bug revealed by the NISCC test suite:
6884 Stop bug triggering large recursion when presented with
6885 certain ASN.1 tags (CVE-2003-0851)
6888 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
6890 *) Fix various bugs revealed by running the NISCC test suite:
6892 Stop out of bounds reads in the ASN1 code when presented with
6893 invalid tags (CVE-2003-0543 and CVE-2003-0544).
6895 If verify callback ignores invalid public key errors don't try to check
6896 certificate signature with the NULL public key.
6900 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
6901 if the server requested one: as stated in TLS 1.0 and SSL 3.0
6905 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
6906 extra data after the compression methods not only for TLS 1.0
6907 but also for SSL 3.0 (as required by the specification).
6908 [Bodo Moeller; problem pointed out by Matthias Loepfe]
6910 *) Change X509_certificate_type() to mark the key as exported/exportable
6911 when it's 512 *bits* long, not 512 bytes.
6914 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
6916 *) Countermeasure against the Klima-Pokorny-Rosa extension of
6917 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
6918 a protocol version number mismatch like a decryption error
6919 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
6922 *) Turn on RSA blinding by default in the default implementation
6923 to avoid a timing attack. Applications that don't want it can call
6924 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
6925 They would be ill-advised to do so in most cases.
6926 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
6928 *) Change RSA blinding code so that it works when the PRNG is not
6929 seeded (in this case, the secret RSA exponent is abused as
6930 an unpredictable seed -- if it is not unpredictable, there
6931 is no point in blinding anyway). Make RSA blinding thread-safe
6932 by remembering the creator's thread ID in rsa->blinding and
6933 having all other threads use local one-time blinding factors
6934 (this requires more computation than sharing rsa->blinding, but
6935 avoids excessive locking; and if an RSA object is not shared
6936 between threads, blinding will still be very fast).
6939 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
6941 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
6942 via timing by performing a MAC computation even if incorrrect
6943 block cipher padding has been found. This is a countermeasure
6944 against active attacks where the attacker has to distinguish
6945 between bad padding and a MAC verification error. (CVE-2003-0078)
6947 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
6948 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
6949 Martin Vuagnoux (EPFL, Ilion)]
6951 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
6953 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
6954 memory from it's contents. This is done with a counter that will
6955 place alternating values in each byte. This can be used to solve
6956 two issues: 1) the removal of calls to memset() by highly optimizing
6957 compilers, and 2) cleansing with other values than 0, since those can
6958 be read through on certain media, for example a swap space on disk.
6961 *) Bugfix: client side session caching did not work with external caching,
6962 because the session->cipher setting was not restored when reloading
6963 from the external cache. This problem was masked, when
6964 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
6965 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
6968 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
6969 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
6970 [Zeev Lieber <zeev-l@yahoo.com>]
6972 *) Undo an undocumented change introduced in 0.9.6e which caused
6973 repeated calls to OpenSSL_add_all_ciphers() and
6974 OpenSSL_add_all_digests() to be ignored, even after calling
6978 *) Change the default configuration reader to deal with last line not
6979 being properly terminated.
6982 *) Change X509_NAME_cmp() so it applies the special rules on handling
6983 DN values that are of type PrintableString, as well as RDNs of type
6984 emailAddress where the value has the type ia5String.
6985 [stefank@valicert.com via Richard Levitte]
6987 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
6988 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
6989 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
6990 the bitwise-OR of the two for use by the majority of applications
6991 wanting this behaviour, and update the docs. The documented
6992 behaviour and actual behaviour were inconsistent and had been
6993 changing anyway, so this is more a bug-fix than a behavioural
6995 [Geoff Thorpe, diagnosed by Nadav Har'El]
6997 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
6998 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
7001 *) Fix initialization code race conditions in
7002 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
7003 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
7004 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
7005 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
7006 ssl2_get_cipher_by_char(),
7007 ssl3_get_cipher_by_char().
7008 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
7010 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
7011 the cached sessions are flushed, as the remove_cb() might use ex_data
7012 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
7013 (see [openssl.org #212]).
7014 [Geoff Thorpe, Lutz Jaenicke]
7016 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
7017 length, instead of the encoding length to d2i_ASN1_OBJECT.
7020 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
7022 *) [In 0.9.6g-engine release:]
7023 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
7024 [Lynn Gazis <lgazis@rainbow.com>]
7026 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
7028 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
7029 and get fix the header length calculation.
7030 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
7031 Alon Kantor <alonk@checkpoint.com> (and others),
7034 *) Use proper error handling instead of 'assertions' in buffer
7035 overflow checks added in 0.9.6e. This prevents DoS (the
7036 assertions could call abort()).
7037 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
7039 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
7041 *) Add various sanity checks to asn1_get_length() to reject
7042 the ASN1 length bytes if they exceed sizeof(long), will appear
7043 negative or the content length exceeds the length of the
7045 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
7047 *) Fix cipher selection routines: ciphers without encryption had no flags
7048 for the cipher strength set and where therefore not handled correctly
7049 by the selection routines (PR #130).
7052 *) Fix EVP_dsa_sha macro.
7056 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
7057 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
7058 that was added in OpenSSL 0.9.6d.
7060 As the countermeasure turned out to be incompatible with some
7061 broken SSL implementations, the new option is part of SSL_OP_ALL.
7062 SSL_OP_ALL is usually employed when compatibility with weird SSL
7063 implementations is desired (e.g. '-bugs' option to 's_client' and
7064 's_server'), so the new option is automatically set in many
7068 *) Changes in security patch:
7070 Changes marked "(CHATS)" were sponsored by the Defense Advanced
7071 Research Projects Agency (DARPA) and Air Force Research Laboratory,
7072 Air Force Materiel Command, USAF, under agreement number
7075 *) Add various sanity checks to asn1_get_length() to reject
7076 the ASN1 length bytes if they exceed sizeof(long), will appear
7077 negative or the content length exceeds the length of the
7078 supplied buffer. (CVE-2002-0659)
7079 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
7081 *) Assertions for various potential buffer overflows, not known to
7083 [Ben Laurie (CHATS)]
7085 *) Various temporary buffers to hold ASCII versions of integers were
7086 too small for 64 bit platforms. (CVE-2002-0655)
7087 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
7089 *) Remote buffer overflow in SSL3 protocol - an attacker could
7090 supply an oversized session ID to a client. (CVE-2002-0656)
7091 [Ben Laurie (CHATS)]
7093 *) Remote buffer overflow in SSL2 protocol - an attacker could
7094 supply an oversized client master key. (CVE-2002-0656)
7095 [Ben Laurie (CHATS)]
7097 Changes between 0.9.6c and 0.9.6d [9 May 2002]
7099 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
7100 encoded as NULL) with id-dsa-with-sha1.
7101 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
7103 *) Check various X509_...() return values in apps/req.c.
7104 [Nils Larsch <nla@trustcenter.de>]
7106 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
7107 an end-of-file condition would erronously be flagged, when the CRLF
7108 was just at the end of a processed block. The bug was discovered when
7109 processing data through a buffering memory BIO handing the data to a
7110 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
7111 <ptsekov@syntrex.com> and Nedelcho Stanev.
7114 *) Implement a countermeasure against a vulnerability recently found
7115 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
7116 before application data chunks to avoid the use of known IVs
7117 with data potentially chosen by the attacker.
7120 *) Fix length checks in ssl3_get_client_hello().
7123 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
7124 to prevent ssl3_read_internal() from incorrectly assuming that
7125 ssl3_read_bytes() found application data while handshake
7126 processing was enabled when in fact s->s3->in_read_app_data was
7127 merely automatically cleared during the initial handshake.
7128 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
7130 *) Fix object definitions for Private and Enterprise: they were not
7131 recognized in their shortname (=lowercase) representation. Extend
7132 obj_dat.pl to issue an error when using undefined keywords instead
7133 of silently ignoring the problem (Svenning Sorensen
7134 <sss@sss.dnsalias.net>).
7137 *) Fix DH_generate_parameters() so that it works for 'non-standard'
7138 generators, i.e. generators other than 2 and 5. (Previously, the
7139 code did not properly initialise the 'add' and 'rem' values to
7140 BN_generate_prime().)
7142 In the new general case, we do not insist that 'generator' is
7143 actually a primitive root: This requirement is rather pointless;
7144 a generator of the order-q subgroup is just as good, if not
7148 *) Map new X509 verification errors to alerts. Discovered and submitted by
7149 Tom Wu <tom@arcot.com>.
7152 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
7153 returning non-zero before the data has been completely received
7154 when using non-blocking I/O.
7155 [Bodo Moeller; problem pointed out by John Hughes]
7157 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
7158 [Ben Laurie, Lutz Jaenicke]
7160 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
7161 Yoram Zahavi <YoramZ@gilian.com>).
7164 *) Add information about CygWin 1.3 and on, and preserve proper
7165 configuration for the versions before that.
7166 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
7168 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
7169 check whether we deal with a copy of a session and do not delete from
7170 the cache in this case. Problem reported by "Izhar Shoshani Levi"
7171 <izhar@checkpoint.com>.
7174 *) Do not store session data into the internal session cache, if it
7175 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
7176 flag is set). Proposed by Aslam <aslam@funk.com>.
7179 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
7183 *) [In 0.9.6d-engine release:]
7184 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
7185 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
7187 *) Add the configuration target linux-s390x.
7188 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
7190 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
7191 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
7192 variable as an indication that a ClientHello message has been
7193 received. As the flag value will be lost between multiple
7194 invocations of ssl3_accept when using non-blocking I/O, the
7195 function may not be aware that a handshake has actually taken
7196 place, thus preventing a new session from being added to the
7199 To avoid this problem, we now set s->new_session to 2 instead of
7200 using a local variable.
7201 [Lutz Jaenicke, Bodo Moeller]
7203 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
7204 if the SSL_R_LENGTH_MISMATCH error is detected.
7205 [Geoff Thorpe, Bodo Moeller]
7207 *) New 'shared_ldflag' column in Configure platform table.
7210 *) Fix EVP_CIPHER_mode macro.
7211 ["Dan S. Camper" <dan@bti.net>]
7213 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
7214 type, we must throw them away by setting rr->length to 0.
7215 [D P Chang <dpc@qualys.com>]
7217 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
7219 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
7220 <Dominikus.Scherkl@biodata.com>. (The previous implementation
7221 worked incorrectly for those cases where range = 10..._2 and
7222 3*range is two bits longer than range.)
7225 *) Only add signing time to PKCS7 structures if it is not already
7229 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
7230 OBJ_ld_ce should be OBJ_id_ce.
7231 Also some ip-pda OIDs in crypto/objects/objects.txt were
7232 incorrect (cf. RFC 3039).
7233 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
7235 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
7236 returns early because it has nothing to do.
7237 [Andy Schneider <andy.schneider@bjss.co.uk>]
7239 *) [In 0.9.6c-engine release:]
7240 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
7241 [Andy Schneider <andy.schneider@bjss.co.uk>]
7243 *) [In 0.9.6c-engine release:]
7244 Add support for Cryptographic Appliance's keyserver technology.
7245 (Use engine 'keyclient')
7246 [Cryptographic Appliances and Geoff Thorpe]
7248 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
7249 is called via tools/c89.sh because arguments have to be
7250 rearranged (all '-L' options must appear before the first object
7252 [Richard Shapiro <rshapiro@abinitio.com>]
7254 *) [In 0.9.6c-engine release:]
7255 Add support for Broadcom crypto accelerator cards, backported
7257 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
7259 *) [In 0.9.6c-engine release:]
7260 Add support for SureWare crypto accelerator cards from
7261 Baltimore Technologies. (Use engine 'sureware')
7262 [Baltimore Technologies and Mark Cox]
7264 *) [In 0.9.6c-engine release:]
7265 Add support for crypto accelerator cards from Accelerated
7266 Encryption Processing, www.aep.ie. (Use engine 'aep')
7267 [AEP Inc. and Mark Cox]
7269 *) Add a configuration entry for gcc on UnixWare.
7270 [Gary Benson <gbenson@redhat.com>]
7272 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
7273 messages are stored in a single piece (fixed-length part and
7274 variable-length part combined) and fix various bugs found on the way.
7277 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
7278 instead. BIO_gethostbyname() does not know what timeouts are
7279 appropriate, so entries would stay in cache even when they have
7281 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
7283 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
7284 faced with a pathologically small ClientHello fragment that does
7285 not contain client_version: Instead of aborting with an error,
7286 simply choose the highest available protocol version (i.e.,
7287 TLS 1.0 unless it is disabled). In practice, ClientHello
7288 messages are never sent like this, but this change gives us
7289 strictly correct behaviour at least for TLS.
7292 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
7293 never resets s->method to s->ctx->method when called from within
7294 one of the SSL handshake functions.
7295 [Bodo Moeller; problem pointed out by Niko Baric]
7297 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
7298 (sent using the client's version number) if client_version is
7299 smaller than the protocol version in use. Also change
7300 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
7301 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
7302 the client will at least see that alert.
7305 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
7309 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
7310 client receives HelloRequest while in a handshake.
7311 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
7313 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
7314 should end in 'break', not 'goto end' which circumvents various
7315 cleanups done in state SSL_ST_OK. But session related stuff
7316 must be disabled for SSL_ST_OK in the case that we just sent a
7319 Also avoid some overhead by not calling ssl_init_wbio_buffer()
7320 before just sending a HelloRequest.
7321 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
7323 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
7324 reveal whether illegal block cipher padding was found or a MAC
7325 verification error occured. (Neither SSLerr() codes nor alerts
7326 are directly visible to potential attackers, but the information
7327 may leak via logfiles.)
7329 Similar changes are not required for the SSL 2.0 implementation
7330 because the number of padding bytes is sent in clear for SSL 2.0,
7331 and the extra bytes are just ignored. However ssl/s2_pkt.c
7332 failed to verify that the purported number of padding bytes is in
7336 *) Add OpenUNIX-8 support including shared libraries
7337 (Boyd Lynn Gerber <gerberb@zenez.com>).
7340 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
7341 'wristwatch attack' using huge encoding parameters (cf.
7342 James H. Manger's CRYPTO 2001 paper). Note that the
7343 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
7344 encoding parameters and hence was not vulnerable.
7347 *) BN_sqr() bug fix.
7348 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
7350 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
7351 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
7352 followed by modular reduction.
7353 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
7355 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
7356 equivalent based on BN_pseudo_rand() instead of BN_rand().
7359 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
7360 This function was broken, as the check for a new client hello message
7361 to handle SGC did not allow these large messages.
7362 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
7365 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
7368 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
7369 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
7372 *) Rework the configuration and shared library support for Tru64 Unix.
7373 The configuration part makes use of modern compiler features and
7374 still retains old compiler behavior for those that run older versions
7375 of the OS. The shared library support part includes a variant that
7376 uses the RPATH feature, and is available through the special
7377 configuration target "alpha-cc-rpath", which will never be selected
7379 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
7381 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
7382 with the same message size as in ssl3_get_certificate_request().
7383 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
7384 messages might inadvertently be reject as too long.
7385 [Petr Lampa <lampa@fee.vutbr.cz>]
7387 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
7390 *) Modified SSL library such that the verify_callback that has been set
7391 specificly for an SSL object with SSL_set_verify() is actually being
7392 used. Before the change, a verify_callback set with this function was
7393 ignored and the verify_callback() set in the SSL_CTX at the time of
7394 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
7395 to allow the necessary settings.
7398 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
7399 explicitly to NULL, as at least on Solaris 8 this seems not always to be
7400 done automatically (in contradiction to the requirements of the C
7401 standard). This made problems when used from OpenSSH.
7404 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
7405 dh->length and always used
7407 BN_rand_range(priv_key, dh->p).
7409 BN_rand_range() is not necessary for Diffie-Hellman, and this
7410 specific range makes Diffie-Hellman unnecessarily inefficient if
7411 dh->length (recommended exponent length) is much smaller than the
7412 length of dh->p. We could use BN_rand_range() if the order of
7413 the subgroup was stored in the DH structure, but we only have
7418 BN_rand(priv_key, l, ...)
7420 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
7426 RSA_eay_public_encrypt
7427 RSA_eay_private_decrypt
7428 RSA_eay_private_encrypt (signing)
7429 RSA_eay_public_decrypt (signature verification)
7431 (default implementations for RSA_public_encrypt,
7432 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
7433 always reject numbers >= n.
7436 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
7437 to synchronize access to 'locking_thread'. This is necessary on
7438 systems where access to 'locking_thread' (an 'unsigned long'
7439 variable) is not atomic.
7442 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
7443 *before* setting the 'crypto_lock_rand' flag. The previous code had
7444 a race condition if 0 is a valid thread ID.
7445 [Travis Vitek <vitek@roguewave.com>]
7447 *) Add support for shared libraries under Irix.
7448 [Albert Chin-A-Young <china@thewrittenword.com>]
7450 *) Add configuration option to build on Linux on both big-endian and
7452 [Ralf Baechle <ralf@uni-koblenz.de>]
7454 *) Add the possibility to create shared libraries on HP-UX.
7457 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
7459 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
7460 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
7461 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
7462 PRNG state recovery was possible based on the output of
7463 one PRNG request appropriately sized to gain knowledge on
7464 'md' followed by enough consecutive 1-byte PRNG requests
7465 to traverse all of 'state'.
7467 1. When updating 'md_local' (the current thread's copy of 'md')
7468 during PRNG output generation, hash all of the previous
7469 'md_local' value, not just the half used for PRNG output.
7471 2. Make the number of bytes from 'state' included into the hash
7472 independent from the number of PRNG bytes requested.
7474 The first measure alone would be sufficient to avoid
7475 Markku-Juhani's attack. (Actually it had never occurred
7476 to me that the half of 'md_local' used for chaining was the
7477 half from which PRNG output bytes were taken -- I had always
7478 assumed that the secret half would be used.) The second
7479 measure makes sure that additional data from 'state' is never
7480 mixed into 'md_local' in small portions; this heuristically
7481 further strengthens the PRNG.
7484 *) Fix crypto/bn/asm/mips3.s.
7487 *) When only the key is given to "enc", the IV is undefined. Print out
7488 an error message in this case.
7491 *) Handle special case when X509_NAME is empty in X509 printing routines.
7494 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
7495 positive and less than q.
7498 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
7499 used: it isn't thread safe and the add_lock_callback should handle
7501 [Paul Rose <Paul.Rose@bridge.com>]
7503 *) Verify that incoming data obeys the block size in
7504 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
7508 [Ulf Möller, Bodo Möller]
7510 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
7511 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
7512 when fixing the server behaviour for backwards-compatible 'client
7513 hello' messages. (Note that the attack is impractical against
7514 SSL 3.0 and TLS 1.0 anyway because length and version checking
7515 means that the probability of guessing a valid ciphertext is
7516 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
7519 Before 0.9.5, the countermeasure (hide the error by generating a
7520 random 'decryption result') did not work properly because
7521 ERR_clear_error() was missing, meaning that SSL_get_error() would
7522 detect the supposedly ignored error.
7524 Both problems are now fixed.
7527 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
7528 (previously it was 1024).
7531 *) Fix for compatibility mode trust settings: ignore trust settings
7532 unless some valid trust or reject settings are present.
7535 *) Fix for blowfish EVP: its a variable length cipher.
7538 *) Fix various bugs related to DSA S/MIME verification. Handle missing
7539 parameters in DSA public key structures and return an error in the
7540 DSA routines if parameters are absent.
7543 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
7544 in the current directory if neither $RANDFILE nor $HOME was set.
7545 RAND_file_name() in 0.9.6a returned NULL in this case. This has
7546 caused some confusion to Windows users who haven't defined $HOME.
7547 Thus RAND_file_name() is changed again: e_os.h can define a
7548 DEFAULT_HOME, which will be used if $HOME is not set.
7549 For Windows, we use "C:"; on other platforms, we still require
7550 environment variables.
7552 *) Move 'if (!initialized) RAND_poll()' into regions protected by
7553 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
7554 having multiple threads call RAND_poll() concurrently.
7557 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
7558 combination of a flag and a thread ID variable.
7559 Otherwise while one thread is in ssleay_rand_bytes (which sets the
7560 flag), *other* threads can enter ssleay_add_bytes without obeying
7561 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
7562 that they do not hold after the first thread unsets add_do_not_lock).
7565 *) Change bctest again: '-x' expressions are not available in all
7569 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
7571 *) Fix a couple of memory leaks in PKCS7_dataDecode()
7572 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
7574 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
7575 the default extension for executables, if any. Also, make the perl
7576 scripts that use symlink() to test if it really exists and use "cp"
7577 if it doesn't. All this made OpenSSL compilable and installable in
7581 *) Fix for asn1_GetSequence() for indefinite length constructed data.
7582 If SEQUENCE is length is indefinite just set c->slen to the total
7583 amount of data available.
7584 [Steve Henson, reported by shige@FreeBSD.org]
7585 [This change does not apply to 0.9.7.]
7587 *) Change bctest to avoid here-documents inside command substitution
7588 (workaround for FreeBSD /bin/sh bug).
7589 For compatibility with Ultrix, avoid shell functions (introduced
7590 in the bctest version that searches along $PATH).
7593 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
7594 with des_encrypt() defined on some operating systems, like Solaris
7598 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
7599 On the Importance of Eliminating Errors in Cryptographic
7600 Computations, J. Cryptology 14 (2001) 2, 101-119,
7601 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
7604 *) MIPS assembler BIGNUM division bug fix.
7607 *) Disabled incorrect Alpha assembler code.
7610 *) Fix PKCS#7 decode routines so they correctly update the length
7611 after reading an EOC for the EXPLICIT tag.
7613 [This change does not apply to 0.9.7.]
7615 *) Fix bug in PKCS#12 key generation routines. This was triggered
7616 if a 3DES key was generated with a 0 initial byte. Include
7617 PKCS12_BROKEN_KEYGEN compilation option to retain the old
7618 (but broken) behaviour.
7621 *) Enhance bctest to search for a working bc along $PATH and print
7623 [Tim Rice <tim@multitalents.net> via Richard Levitte]
7625 *) Fix memory leaks in err.c: free err_data string if necessary;
7626 don't write to the wrong index in ERR_set_error_data.
7629 *) Implement ssl23_peek (analogous to ssl23_read), which previously
7633 *) Replace rdtsc with _emit statements for VC++ version 5.
7634 [Jeremy Cooper <jeremy@baymoo.org>]
7636 *) Make it possible to reuse SSLv2 sessions.
7639 *) In copy_email() check for >= 0 as a return value for
7640 X509_NAME_get_index_by_NID() since 0 is a valid index.
7641 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
7643 *) Avoid coredump with unsupported or invalid public keys by checking if
7644 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
7645 PKCS7_verify() fails with non detached data.
7648 *) Don't use getenv in library functions when run as setuid/setgid.
7649 New function OPENSSL_issetugid().
7652 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
7653 due to incorrect handling of multi-threading:
7655 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
7657 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
7659 3. Count how many times MemCheck_off() has been called so that
7660 nested use can be treated correctly. This also avoids
7661 inband-signalling in the previous code (which relied on the
7662 assumption that thread ID 0 is impossible).
7665 *) Add "-rand" option also to s_client and s_server.
7668 *) Fix CPU detection on Irix 6.x.
7669 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
7670 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
7672 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
7675 [This change does not apply to 0.9.7.]
7677 *) Use the cached encoding of an X509_NAME structure rather than
7678 copying it. This is apparently the reason for the libsafe "errors"
7679 but the code is actually correct.
7682 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
7683 Bleichenbacher's DSA attack.
7684 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
7685 to be set and top=0 forces the highest bit to be set; top=-1 is new
7686 and leaves the highest bit random.
7687 [Ulf Moeller, Bodo Moeller]
7689 *) In the NCONF_...-based implementations for CONF_... queries
7690 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
7691 a temporary CONF structure with the data component set to NULL
7692 (which gives segmentation faults in lh_retrieve).
7693 Instead, use NULL for the CONF pointer in CONF_get_string and
7694 CONF_get_number (which may use environment variables) and directly
7695 return NULL from CONF_get_section.
7698 *) Fix potential buffer overrun for EBCDIC.
7701 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
7702 keyUsage if basicConstraints absent for a CA.
7705 *) Make SMIME_write_PKCS7() write mail header values with a format that
7706 is more generally accepted (no spaces before the semicolon), since
7707 some programs can't parse those values properly otherwise. Also make
7708 sure BIO's that break lines after each write do not create invalid
7712 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
7713 macros previously used would not encode an empty SEQUENCE OF
7714 and break the signature.
7716 [This change does not apply to 0.9.7.]
7718 *) Zero the premaster secret after deriving the master secret in
7722 *) Add some EVP_add_digest_alias registrations (as found in
7723 OpenSSL_add_all_digests()) to SSL_library_init()
7724 aka OpenSSL_add_ssl_algorithms(). This provides improved
7725 compatibility with peers using X.509 certificates
7726 with unconventional AlgorithmIdentifier OIDs.
7729 *) Fix for Irix with NO_ASM.
7730 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
7732 *) ./config script fixes.
7733 [Ulf Moeller, Richard Levitte]
7735 *) Fix 'openssl passwd -1'.
7738 *) Change PKCS12_key_gen_asc() so it can cope with non null
7739 terminated strings whose length is passed in the passlen
7740 parameter, for example from PEM callbacks. This was done
7741 by adding an extra length parameter to asc2uni().
7742 [Steve Henson, reported by <oddissey@samsung.co.kr>]
7744 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
7745 call failed, free the DSA structure.
7748 *) Fix to uni2asc() to cope with zero length Unicode strings.
7749 These are present in some PKCS#12 files.
7752 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
7753 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
7754 when writing a 32767 byte record.
7755 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
7757 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
7758 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
7760 (RSA objects have a reference count access to which is protected
7761 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
7762 so they are meant to be shared between threads.)
7763 [Bodo Moeller, Geoff Thorpe; original patch submitted by
7764 "Reddie, Steven" <Steven.Reddie@ca.com>]
7766 *) Fix a deadlock in CRYPTO_mem_leaks().
7769 *) Use better test patterns in bntest.
7772 *) rand_win.c fix for Borland C.
7775 *) BN_rshift bugfix for n == 0.
7778 *) Add a 'bctest' script that checks for some known 'bc' bugs
7779 so that 'make test' does not abort just because 'bc' is broken.
7782 *) Store verify_result within SSL_SESSION also for client side to
7783 avoid potential security hole. (Re-used sessions on the client side
7784 always resulted in verify_result==X509_V_OK, not using the original
7785 result of the server certificate verification.)
7788 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
7789 SSL3_RT_APPLICATION_DATA, return 0.
7790 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
7794 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
7795 releases, have been re-implemented by renaming the previous
7796 implementations of ssl2_read and ssl3_read to ssl2_read_internal
7797 and ssl3_read_internal, respectively, and adding 'peek' parameters
7798 to them. The new ssl[23]_{read,peek} functions are calls to
7799 ssl[23]_read_internal with the 'peek' flag set appropriately.
7800 A 'peek' parameter has also been added to ssl3_read_bytes, which
7801 does the actual work for ssl3_read_internal.
7804 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
7805 the method-specific "init()" handler. Also clean up ex_data after
7806 calling the method-specific "finish()" handler. Previously, this was
7807 happening the other way round.
7810 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
7811 The previous value, 12, was not always sufficient for BN_mod_exp().
7814 *) Make sure that shared libraries get the internal name engine with
7815 the full version number and not just 0. This should mark the
7816 shared libraries as not backward compatible. Of course, this should
7817 be changed again when we can guarantee backward binary compatibility.
7820 *) Fix typo in get_cert_by_subject() in by_dir.c
7821 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
7823 *) Rework the system to generate shared libraries:
7825 - Make note of the expected extension for the shared libraries and
7826 if there is a need for symbolic links from for example libcrypto.so.0
7827 to libcrypto.so.0.9.7. There is extended info in Configure for
7830 - Make as few rebuilds of the shared libraries as possible.
7832 - Still avoid linking the OpenSSL programs with the shared libraries.
7834 - When installing, install the shared libraries separately from the
7838 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
7840 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
7841 and not in SSL_clear because the latter is also used by the
7842 accept/connect functions; previously, the settings made by
7843 SSL_set_read_ahead would be lost during the handshake.
7844 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
7846 *) Correct util/mkdef.pl to be selective about disabled algorithms.
7847 Previously, it would create entries for disabled algorithms no
7851 *) Added several new manual pages for SSL_* function.
7854 Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
7856 *) In ssl23_get_client_hello, generate an error message when faced
7857 with an initial SSL 3.0/TLS record that is too small to contain the
7858 first two bytes of the ClientHello message, i.e. client_version.
7859 (Note that this is a pathologic case that probably has never happened
7860 in real life.) The previous approach was to use the version number
7861 from the record header as a substitute; but our protocol choice
7862 should not depend on that one because it is not authenticated
7863 by the Finished messages.
7866 *) More robust randomness gathering functions for Windows.
7867 [Jeffrey Altman <jaltman@columbia.edu>]
7869 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
7870 not set then we don't setup the error code for issuer check errors
7871 to avoid possibly overwriting other errors which the callback does
7872 handle. If an application does set the flag then we assume it knows
7873 what it is doing and can handle the new informational codes
7877 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
7878 a general "ANY" type, as such it should be able to decode anything
7879 including tagged types. However it didn't check the class so it would
7880 wrongly interpret tagged types in the same way as their universal
7881 counterpart and unknown types were just rejected. Changed so that the
7882 tagged and unknown types are handled in the same way as a SEQUENCE:
7883 that is the encoding is stored intact. There is also a new type
7884 "V_ASN1_OTHER" which is used when the class is not universal, in this
7885 case we have no idea what the actual type is so we just lump them all
7889 *) On VMS, stdout may very well lead to a file that is written to
7890 in a record-oriented fashion. That means that every write() will
7891 write a separate record, which will be read separately by the
7892 programs trying to read from it. This can be very confusing.
7894 The solution is to put a BIO filter in the way that will buffer
7895 text until a linefeed is reached, and then write everything a
7896 line at a time, so every record written will be an actual line,
7897 not chunks of lines and not (usually doesn't happen, but I've
7898 seen it once) several lines in one record. BIO_f_linebuffer() is
7901 Currently, it's a VMS-only method, because that's where it has
7902 been tested well enough.
7905 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
7906 it can return incorrect results.
7907 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
7908 but it was in 0.9.6-beta[12].)
7911 *) Disable the check for content being present when verifying detached
7912 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
7913 include zero length content when signing messages.
7916 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
7917 BIO_ctrl (for BIO pairs).
7920 *) Add DSO method for VMS.
7923 *) Bug fix: Montgomery multiplication could produce results with the
7927 *) Add RPM specification openssl.spec and modify it to build three
7928 packages. The default package contains applications, application
7929 documentation and run-time libraries. The devel package contains
7930 include files, static libraries and function documentation. The
7931 doc package contains the contents of the doc directory. The original
7932 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
7935 *) Add a large number of documentation files for many SSL routines.
7936 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
7938 *) Add a configuration entry for Sony News 4.
7939 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
7941 *) Don't set the two most significant bits to one when generating a
7942 random number < q in the DSA library.
7945 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
7946 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
7947 the underlying transport is blocking) if a handshake took place.
7948 (The default behaviour is needed by applications such as s_client
7949 and s_server that use select() to determine when to use SSL_read;
7950 but for applications that know in advance when to expect data, it
7951 just makes things more complicated.)
7954 *) Add RAND_egd_bytes(), which gives control over the number of bytes read
7958 *) Add a few more EBCDIC conditionals that make `req' and `x509'
7959 work better on such systems.
7960 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
7962 *) Add two demo programs for PKCS12_parse() and PKCS12_create().
7963 Update PKCS12_parse() so it copies the friendlyName and the
7964 keyid to the certificates aux info.
7967 *) Fix bug in PKCS7_verify() which caused an infinite loop
7968 if there was more than one signature.
7969 [Sven Uszpelkat <su@celocom.de>]
7971 *) Major change in util/mkdef.pl to include extra information
7972 about each symbol, as well as presenting variables as well
7973 as functions. This change means that there's n more need
7974 to rebuild the .num files when some algorithms are excluded.
7977 *) Allow the verify time to be set by an application,
7978 rather than always using the current time.
7981 *) Phase 2 verify code reorganisation. The certificate
7982 verify code now looks up an issuer certificate by a
7983 number of criteria: subject name, authority key id
7984 and key usage. It also verifies self signed certificates
7985 by the same criteria. The main comparison function is
7986 X509_check_issued() which performs these checks.
7988 Lot of changes were necessary in order to support this
7989 without completely rewriting the lookup code.
7991 Authority and subject key identifier are now cached.
7993 The LHASH 'certs' is X509_STORE has now been replaced
7994 by a STACK_OF(X509_OBJECT). This is mainly because an
7995 LHASH can't store or retrieve multiple objects with
7996 the same hash value.
7998 As a result various functions (which were all internal
7999 use only) have changed to handle the new X509_STORE
8000 structure. This will break anything that messed round
8001 with X509_STORE internally.
8003 The functions X509_STORE_add_cert() now checks for an
8004 exact match, rather than just subject name.
8006 The X509_STORE API doesn't directly support the retrieval
8007 of multiple certificates matching a given criteria, however
8008 this can be worked round by performing a lookup first
8009 (which will fill the cache with candidate certificates)
8010 and then examining the cache for matches. This is probably
8011 the best we can do without throwing out X509_LOOKUP
8012 entirely (maybe later...).
8014 The X509_VERIFY_CTX structure has been enhanced considerably.
8016 All certificate lookup operations now go via a get_issuer()
8017 callback. Although this currently uses an X509_STORE it
8018 can be replaced by custom lookups. This is a simple way
8019 to bypass the X509_STORE hackery necessary to make this
8020 work and makes it possible to use more efficient techniques
8021 in future. A very simple version which uses a simple
8022 STACK for its trusted certificate store is also provided
8023 using X509_STORE_CTX_trusted_stack().
8025 The verify_cb() and verify() callbacks now have equivalents
8026 in the X509_STORE_CTX structure.
8028 X509_STORE_CTX also has a 'flags' field which can be used
8029 to customise the verify behaviour.
8032 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
8033 excludes S/MIME capabilities.
8036 *) When a certificate request is read in keep a copy of the
8037 original encoding of the signed data and use it when outputing
8038 again. Signatures then use the original encoding rather than
8039 a decoded, encoded version which may cause problems if the
8040 request is improperly encoded.
8043 *) For consistency with other BIO_puts implementations, call
8044 buffer_write(b, ...) directly in buffer_puts instead of calling
8047 In BIO_puts, increment b->num_write as in BIO_write.
8048 [Peter.Sylvester@EdelWeb.fr]
8050 *) Fix BN_mul_word for the case where the word is 0. (We have to use
8051 BN_zero, we may not return a BIGNUM with an array consisting of
8055 *) Avoid calling abort() from within the library when problems are
8056 detected, except if preprocessor symbols have been defined
8057 (such as REF_CHECK, BN_DEBUG etc.).
8060 *) New openssl application 'rsautl'. This utility can be
8061 used for low level RSA operations. DER public key
8062 BIO/fp routines also added.
8065 *) New Configure entry and patches for compiling on QNX 4.
8066 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
8068 *) A demo state-machine implementation was sponsored by
8069 Nuron (http://www.nuron.com/) and is now available in
8070 demos/state_machine.
8073 *) New options added to the 'dgst' utility for signature
8074 generation and verification.
8077 *) Unrecognized PKCS#7 content types are now handled via a
8078 catch all ASN1_TYPE structure. This allows unsupported
8079 types to be stored as a "blob" and an application can
8080 encode and decode it manually.
8083 *) Fix various signed/unsigned issues to make a_strex.c
8085 [Oscar Jacobsson <oscar.jacobsson@celocom.com>]
8087 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
8088 length if passed a buffer. ASN1_INTEGER_to_BN failed
8089 if passed a NULL BN and its argument was negative.
8090 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
8092 *) Modification to PKCS#7 encoding routines to output definite
8093 length encoding. Since currently the whole structures are in
8094 memory there's not real point in using indefinite length
8095 constructed encoding. However if OpenSSL is compiled with
8096 the flag PKCS7_INDEFINITE_ENCODING the old form is used.
8099 *) Added BIO_vprintf() and BIO_vsnprintf().
8102 *) Added more prefixes to parse for in the the strings written
8103 through a logging bio, to cover all the levels that are available
8104 through syslog. The prefixes are now:
8106 PANIC, EMERG, EMR => LOG_EMERG
8107 ALERT, ALR => LOG_ALERT
8108 CRIT, CRI => LOG_CRIT
8109 ERROR, ERR => LOG_ERR
8110 WARNING, WARN, WAR => LOG_WARNING
8111 NOTICE, NOTE, NOT => LOG_NOTICE
8112 INFO, INF => LOG_INFO
8113 DEBUG, DBG => LOG_DEBUG
8115 and as before, if none of those prefixes are present at the
8116 beginning of the string, LOG_ERR is chosen.
8118 On Win32, the LOG_* levels are mapped according to this:
8120 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
8121 LOG_WARNING => EVENTLOG_WARNING_TYPE
8122 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
8126 *) Made it possible to reconfigure with just the configuration
8127 argument "reconf" or "reconfigure". The command line arguments
8128 are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
8129 and are retrieved from there when reconfiguring.
8133 [Assar Westerlund <assar@sics.se>, Richard Levitte]
8135 *) Add the arguments -CAfile and -CApath to the pkcs12 utility.
8138 *) The obj_dat.pl script was messing up the sorting of object
8139 names. The reason was that it compared the quoted version
8140 of strings as a result "OCSP" > "OCSP Signing" because
8141 " > SPACE. Changed script to store unquoted versions of
8142 names and add quotes on output. It was also omitting some
8143 names from the lookup table if they were given a default
8144 value (that is if SN is missing it is given the same
8145 value as LN and vice versa), these are now added on the
8146 grounds that if an object has a name we should be able to
8147 look it up. Finally added warning output when duplicate
8148 short or long names are found.
8151 *) Changes needed for Tandem NSK.
8152 [Scott Uroff <scott@xypro.com>]
8154 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
8155 RSA_padding_check_SSLv23(), special padding was never detected
8156 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
8157 version rollback attacks was not effective.
8159 In s23_clnt.c, don't use special rollback-attack detection padding
8160 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
8161 client; similarly, in s23_srvr.c, don't do the rollback check if
8162 SSL 2.0 is the only protocol enabled in the server.
8165 *) Make it possible to get hexdumps of unprintable data with 'openssl
8166 asn1parse'. By implication, the functions ASN1_parse_dump() and
8167 BIO_dump_indent() are added.
8170 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
8171 these print out strings and name structures based on various
8172 flags including RFC2253 support and proper handling of
8173 multibyte characters. Added options to the 'x509' utility
8174 to allow the various flags to be set.
8177 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
8178 Also change the functions X509_cmp_current_time() and
8179 X509_gmtime_adj() work with an ASN1_TIME structure,
8180 this will enable certificates using GeneralizedTime in validity
8181 dates to be checked.
8184 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid
8185 negative public key encodings) on by default,
8186 NO_NEG_PUBKEY_BUG can be set to disable it.
8189 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
8190 content octets. An i2c_ASN1_OBJECT is unnecessary because
8191 the encoding can be trivially obtained from the structure.
8194 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
8195 not read locks (CRYPTO_r_[un]lock).
8198 *) A first attempt at creating official support for shared
8199 libraries through configuration. I've kept it so the
8200 default is static libraries only, and the OpenSSL programs
8201 are always statically linked for now, but there are
8202 preparations for dynamic linking in place.
8203 This has been tested on Linux and Tru64.
8206 *) Randomness polling function for Win9x, as described in:
8207 Peter Gutmann, Software Generation of Practically Strong
8211 *) Fix so PRNG is seeded in req if using an already existing
8215 *) New options to smime application. -inform and -outform
8216 allow alternative formats for the S/MIME message including
8217 PEM and DER. The -content option allows the content to be
8218 specified separately. This should allow things like Netscape
8219 form signing output easier to verify.
8222 *) Fix the ASN1 encoding of tags using the 'long form'.
8225 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
8226 STRING types. These convert content octets to and from the
8227 underlying type. The actual tag and length octets are
8228 already assumed to have been read in and checked. These
8229 are needed because all other string types have virtually
8230 identical handling apart from the tag. By having versions
8231 of the ASN1 functions that just operate on content octets
8232 IMPLICIT tagging can be handled properly. It also allows
8233 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
8234 and ASN1_INTEGER are identical apart from the tag.
8237 *) Change the handling of OID objects as follows:
8239 - New object identifiers are inserted in objects.txt, following
8240 the syntax given in objects.README.
8241 - objects.pl is used to process obj_mac.num and create a new
8243 - obj_dat.pl is used to create a new obj_dat.h, using the data in
8246 This is currently kind of a hack, and the perl code in objects.pl
8247 isn't very elegant, but it works as I intended. The simplest way
8248 to check that it worked correctly is to look in obj_dat.h and
8249 check the array nid_objs and make sure the objects haven't moved
8250 around (this is important!). Additions are OK, as well as
8251 consistent name changes.
8254 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
8257 *) Addition of the command line parameter '-rand file' to 'openssl req'.
8258 The given file adds to whatever has already been seeded into the
8259 random pool through the RANDFILE configuration file option or
8260 environment variable, or the default random state file.
8263 *) mkstack.pl now sorts each macro group into lexical order.
8264 Previously the output order depended on the order the files
8265 appeared in the directory, resulting in needless rewriting
8269 *) Patches to make OpenSSL compile under Win32 again. Mostly
8270 work arounds for the VC++ problem that it treats func() as
8271 func(void). Also stripped out the parts of mkdef.pl that
8272 added extra typesafe functions: these no longer exist.
8275 *) Reorganisation of the stack code. The macros are now all
8276 collected in safestack.h . Each macro is defined in terms of
8277 a "stack macro" of the form SKM_<name>(type, a, b). The
8278 DEBUG_SAFESTACK is now handled in terms of function casts,
8279 this has the advantage of retaining type safety without the
8280 use of additional functions. If DEBUG_SAFESTACK is not defined
8281 then the non typesafe macros are used instead. Also modified the
8282 mkstack.pl script to handle the new form. Needs testing to see
8283 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
8284 the default if no major problems. Similar behaviour for ASN1_SET_OF
8285 and PKCS12_STACK_OF.
8288 *) When some versions of IIS use the 'NET' form of private key the
8289 key derivation algorithm is different. Normally MD5(password) is
8290 used as a 128 bit RC4 key. In the modified case
8291 MD5(MD5(password) + "SGCKEYSALT") is used instead. Added some
8292 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
8293 as the old Netscape_RSA functions except they have an additional
8294 'sgckey' parameter which uses the modified algorithm. Also added
8295 an -sgckey command line option to the rsa utility. Thanks to
8296 Adrian Peck <bertie@ncipher.com> for posting details of the modified
8297 algorithm to openssl-dev.
8300 *) The evp_local.h macros were using 'c.##kname' which resulted in
8301 invalid expansion on some systems (SCO 5.0.5 for example).
8302 Corrected to 'c.kname'.
8303 [Phillip Porch <root@theporch.com>]
8305 *) New X509_get1_email() and X509_REQ_get1_email() functions that return
8306 a STACK of email addresses from a certificate or request, these look
8307 in the subject name and the subject alternative name extensions and
8308 omit any duplicate addresses.
8311 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows.
8312 This makes DSA verification about 2 % faster.
8315 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
8316 (meaning that now 2^5 values will be precomputed, which is only 4 KB
8317 plus overhead for 1024 bit moduli).
8318 This makes exponentiations about 0.5 % faster for 1024 bit
8319 exponents (as measured by "openssl speed rsa2048").
8322 *) Rename memory handling macros to avoid conflicts with other
8324 Malloc => OPENSSL_malloc
8325 Malloc_locked => OPENSSL_malloc_locked
8326 Realloc => OPENSSL_realloc
8327 Free => OPENSSL_free
8330 *) New function BN_mod_exp_mont_word for small bases (roughly 15%
8331 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
8334 *) CygWin32 support.
8335 [John Jarvie <jjarvie@newsguy.com>]
8337 *) The type-safe stack code has been rejigged. It is now only compiled
8338 in when OpenSSL is configured with the DEBUG_SAFESTACK option and
8339 by default all type-specific stack functions are "#define"d back to
8340 standard stack functions. This results in more streamlined output
8341 but retains the type-safety checking possibilities of the original
8345 *) The STACK code has been cleaned up, and certain type declarations
8346 that didn't make a lot of sense have been brought in line. This has
8347 also involved a cleanup of sorts in safestack.h to more correctly
8348 map type-safe stack functions onto their plain stack counterparts.
8349 This work has also resulted in a variety of "const"ifications of
8350 lots of the code, especially "_cmp" operations which should normally
8351 be prototyped with "const" parameters anyway.
8354 *) When generating bytes for the first time in md_rand.c, 'stir the pool'
8355 by seeding with STATE_SIZE dummy bytes (with zero entropy count).
8356 (The PRNG state consists of two parts, the large pool 'state' and 'md',
8357 where all of 'md' is used each time the PRNG is used, but 'state'
8358 is used only indexed by a cyclic counter. As entropy may not be
8359 well distributed from the beginning, 'md' is important as a
8360 chaining variable. However, the output function chains only half
8361 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
8362 all of 'md', and seeding with STATE_SIZE dummy bytes will result
8363 in all of 'state' being rewritten, with the new values depending
8364 on virtually all of 'md'. This overcomes the 80 bit limitation.)
8367 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
8368 the handshake is continued after ssl_verify_cert_chain();
8369 otherwise, if SSL_VERIFY_NONE is set, remaining error codes
8370 can lead to 'unexplainable' connection aborts later.
8371 [Bodo Moeller; problem tracked down by Lutz Jaenicke]
8373 *) Major EVP API cipher revision.
8374 Add hooks for extra EVP features. This allows various cipher
8375 parameters to be set in the EVP interface. Support added for variable
8376 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
8377 setting of RC2 and RC5 parameters.
8379 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
8382 Remove lots of duplicated code from the EVP library. For example *every*
8383 cipher init() function handles the 'iv' in the same way according to the
8384 cipher mode. They also all do nothing if the 'key' parameter is NULL and
8385 for CFB and OFB modes they zero ctx->num.
8387 New functionality allows removal of S/MIME code RC2 hack.
8389 Most of the routines have the same form and so can be declared in terms
8392 By shifting this to the top level EVP_CipherInit() it can be removed from
8393 all individual ciphers. If the cipher wants to handle IVs or keys
8394 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
8397 Change lots of functions like EVP_EncryptUpdate() to now return a
8398 value: although software versions of the algorithms cannot fail
8399 any installed hardware versions can.
8402 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
8403 this option is set, tolerate broken clients that send the negotiated
8404 protocol version number instead of the requested protocol version
8408 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag;
8409 i.e. non-zero for export ciphersuites, zero otherwise.
8410 Previous versions had this flag inverted, inconsistent with
8411 rsa_tmp_cb (..._TMP_RSA_CB).
8412 [Bodo Moeller; problem reported by Amit Chopra]
8414 *) Add missing DSA library text string. Work around for some IIS
8415 key files with invalid SEQUENCE encoding.
8418 *) Add a document (doc/standards.txt) that list all kinds of standards
8419 and so on that are implemented in OpenSSL.
8422 *) Enhance c_rehash script. Old version would mishandle certificates
8423 with the same subject name hash and wouldn't handle CRLs at all.
8424 Added -fingerprint option to crl utility, to support new c_rehash
8428 *) Eliminate non-ANSI declarations in crypto.h and stack.h.
8431 *) Fix for SSL server purpose checking. Server checking was
8432 rejecting certificates which had extended key usage present
8433 but no ssl client purpose.
8434 [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>]
8436 *) Make PKCS#12 code work with no password. The PKCS#12 spec
8437 is a little unclear about how a blank password is handled.
8438 Since the password in encoded as a BMPString with terminating
8439 double NULL a zero length password would end up as just the
8440 double NULL. However no password at all is different and is
8441 handled differently in the PKCS#12 key generation code. NS
8442 treats a blank password as zero length. MSIE treats it as no
8443 password on export: but it will try both on import. We now do
8444 the same: PKCS12_parse() tries zero length and no password if
8445 the password is set to "" or NULL (NULL is now a valid password:
8446 it wasn't before) as does the pkcs12 application.
8449 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
8450 perror when PEM_read_bio_X509_REQ fails, the error message must
8451 be obtained from the error queue.
8454 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
8455 it in ERR_remove_state if appropriate, and change ERR_get_state
8456 accordingly to avoid race conditions (this is necessary because
8457 thread_hash is no longer constant once set).
8460 *) Bugfix for linux-elf makefile.one.
8463 *) RSA_get_default_method() will now cause a default
8464 RSA_METHOD to be chosen if one doesn't exist already.
8465 Previously this was only set during a call to RSA_new()
8466 or RSA_new_method(NULL) meaning it was possible for
8467 RSA_get_default_method() to return NULL.
8470 *) Added native name translation to the existing DSO code
8471 that will convert (if the flag to do so is set) filenames
8472 that are sufficiently small and have no path information
8473 into a canonical native form. Eg. "blah" converted to
8474 "libblah.so" or "blah.dll" etc.
8477 *) New function ERR_error_string_n(e, buf, len) which is like
8478 ERR_error_string(e, buf), but writes at most 'len' bytes
8479 including the 0 terminator. For ERR_error_string_n, 'buf'
8481 [Damien Miller <djm@mindrot.org>, Bodo Moeller]
8483 *) CONF library reworked to become more general. A new CONF
8484 configuration file reader "class" is implemented as well as a
8485 new functions (NCONF_*, for "New CONF") to handle it. The now
8486 old CONF_* functions are still there, but are reimplemented to
8487 work in terms of the new functions. Also, a set of functions
8488 to handle the internal storage of the configuration data is
8489 provided to make it easier to write new configuration file
8490 reader "classes" (I can definitely see something reading a
8491 configuration file in XML format, for example), called _CONF_*,
8492 or "the configuration storage API"...
8494 The new configuration file reading functions are:
8496 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
8497 NCONF_get_section, NCONF_get_string, NCONF_get_numbre
8499 NCONF_default, NCONF_WIN32
8501 NCONF_dump_fp, NCONF_dump_bio
8503 NCONF_default and NCONF_WIN32 are method (or "class") choosers,
8504 NCONF_new creates a new CONF object. This works in the same way
8505 as other interfaces in OpenSSL, like the BIO interface.
8506 NCONF_dump_* dump the internal storage of the configuration file,
8507 which is useful for debugging. All other functions take the same
8508 arguments as the old CONF_* functions wth the exception of the
8509 first that must be a `CONF *' instead of a `LHASH *'.
8511 To make it easer to use the new classes with the old CONF_* functions,
8512 the function CONF_set_default_method is provided.
8515 *) Add '-tls1' option to 'openssl ciphers', which was already
8516 mentioned in the documentation but had not been implemented.
8517 (This option is not yet really useful because even the additional
8518 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
8521 *) Initial DSO code added into libcrypto for letting OpenSSL (and
8522 OpenSSL-based applications) load shared libraries and bind to
8523 them in a portable way.
8524 [Geoff Thorpe, with contributions from Richard Levitte]
8526 Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
8528 *) Make sure _lrotl and _lrotr are only used with MSVC.
8530 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
8531 (the default implementation of RAND_status).
8533 *) Rename openssl x509 option '-crlext', which was added in 0.9.5,
8534 to '-clrext' (= clear extensions), as intended and documented.
8535 [Bodo Moeller; inconsistency pointed out by Michael Attili
8538 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length
8539 was larger than the MD block size.
8540 [Steve Henson, pointed out by Yost William <YostW@tce.com>]
8542 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
8543 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
8544 using the passed key: if the passed key was a private key the result
8545 of X509_print(), for example, would be to print out all the private key
8549 *) des_quad_cksum() byte order bug fix.
8550 [Ulf Möller, using the problem description in krb4-0.9.7, where
8551 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>]
8553 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
8555 [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>]
8557 *) For easily testing in shell scripts whether some command
8558 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
8559 returns with exit code 0 iff no command of the given name is available.
8560 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
8561 the output goes to stdout and nothing is printed to stderr.
8562 Additional arguments are always ignored.
8564 Since for each cipher there is a command of the same name,
8565 the 'no-cipher' compilation switches can be tested this way.
8567 ('openssl no-XXX' is not able to detect pseudo-commands such
8568 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
8571 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
8574 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
8575 is set; it will be thrown away anyway because each handshake creates
8577 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
8578 to parameters -- in previous versions (since OpenSSL 0.9.3) the
8579 'default key' from SSL_CTX_set_tmp_dh would always be lost, meaning
8580 you effectivly got SSL_OP_SINGLE_DH_USE when using this macro.
8583 *) New s_client option -ign_eof: EOF at stdin is ignored, and
8584 'Q' and 'R' lose their special meanings (quit/renegotiate).
8585 This is part of what -quiet does; unlike -quiet, -ign_eof
8586 does not suppress any output.
8589 *) Add compatibility options to the purpose and trust code. The
8590 purpose X509_PURPOSE_ANY is "any purpose" which automatically
8591 accepts a certificate or CA, this was the previous behaviour,
8592 with all the associated security issues.
8594 X509_TRUST_COMPAT is the old trust behaviour: only and
8595 automatically trust self signed roots in certificate store. A
8596 new trust setting X509_TRUST_DEFAULT is used to specify that
8597 a purpose has no associated trust setting and it should instead
8598 use the value in the default purpose.
8601 *) Fix the PKCS#8 DSA private key code so it decodes keys again
8602 and fix a memory leak.
8605 *) In util/mkerr.pl (which implements 'make errors'), preserve
8606 reason strings from the previous version of the .c file, as
8607 the default to have only downcase letters (and digits) in
8608 automatically generated reasons codes is not always appropriate.
8611 *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
8612 using strerror. Previously, ERR_reason_error_string() returned
8613 library names as reason strings for SYSerr; but SYSerr is a special
8614 case where small numbers are errno values, not library numbers.
8617 *) Add '-dsaparam' option to 'openssl dhparam' application. This
8618 converts DSA parameters into DH parameters. (When creating parameters,
8619 DSA_generate_parameters is used.)
8622 *) Include 'length' (recommended exponent length) in C code generated
8623 by 'openssl dhparam -C'.
8626 *) The second argument to set_label in perlasm was already being used
8627 so couldn't be used as a "file scope" flag. Moved to third argument
8631 *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
8632 instead of RAND_bytes for encryption IVs and salts.
8635 *) Include RAND_status() into RAND_METHOD instead of implementing
8636 it only for md_rand.c Otherwise replacing the PRNG by calling
8637 RAND_set_rand_method would be impossible.
8640 *) Don't let DSA_generate_key() enter an infinite loop if the random
8641 number generation fails.
8644 *) New 'rand' application for creating pseudo-random output.
8647 *) Added configuration support for Linux/IA64
8648 [Rolf Haberrecker <rolf@suse.de>]
8650 *) Assembler module support for Mingw32.
8653 *) Shared library support for HPUX (in shlib/).
8654 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous]
8656 *) Shared library support for Solaris gcc.
8657 [Lutz Behnke <behnke@trustcenter.de>]
8659 Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
8661 *) PKCS7_encrypt() was adding text MIME headers twice because they
8662 were added manually and by SMIME_crlf_copy().
8665 *) In bntest.c don't call BN_rand with zero bits argument.
8666 [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>]
8668 *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
8669 case was implemented. This caused BN_div_recp() to fail occasionally.
8672 *) Add an optional second argument to the set_label() in the perl
8673 assembly language builder. If this argument exists and is set
8674 to 1 it signals that the assembler should use a symbol whose
8675 scope is the entire file, not just the current function. This
8676 is needed with MASM which uses the format label:: for this scope.
8677 [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>]
8679 *) Change the ASN1 types so they are typedefs by default. Before
8680 almost all types were #define'd to ASN1_STRING which was causing
8681 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
8685 *) Change names of new functions to the new get1/get0 naming
8686 convention: After 'get1', the caller owns a reference count
8687 and has to call ..._free; 'get0' returns a pointer to some
8688 data structure without incrementing reference counters.
8689 (Some of the existing 'get' functions increment a reference
8690 counter, some don't.)
8691 Similarly, 'set1' and 'add1' functions increase reference
8692 counters or duplicate objects.
8695 *) Allow for the possibility of temp RSA key generation failure:
8696 the code used to assume it always worked and crashed on failure.
8699 *) Fix potential buffer overrun problem in BIO_printf().
8700 [Ulf Möller, using public domain code by Patrick Powell; problem
8701 pointed out by David Sacerdote <das33@cornell.edu>]
8703 *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions
8704 RAND_egd() and RAND_status(). In the command line application,
8705 the EGD socket can be specified like a seed file using RANDFILE
8709 *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
8710 Some CAs (e.g. Verisign) distribute certificates in this form.
8713 *) Remove the SSL_ALLOW_ADH compile option and set the default cipher
8714 list to exclude them. This means that no special compilation option
8715 is needed to use anonymous DH: it just needs to be included in the
8719 *) Change the EVP_MD_CTX_type macro so its meaning consistent with
8720 EVP_MD_type. The old functionality is available in a new macro called
8721 EVP_MD_md(). Change code that uses it and update docs.
8724 *) ..._ctrl functions now have corresponding ..._callback_ctrl functions
8725 where the 'void *' argument is replaced by a function pointer argument.
8726 Previously 'void *' was abused to point to functions, which works on
8727 many platforms, but is not correct. As these functions are usually
8728 called by macros defined in OpenSSL header files, most source code
8729 should work without changes.
8732 *) <openssl/opensslconf.h> (which is created by Configure) now contains
8733 sections with information on -D... compiler switches used for
8734 compiling the library so that applications can see them. To enable
8735 one of these sections, a pre-processor symbol OPENSSL_..._DEFINES
8736 must be defined. E.g.,
8737 #define OPENSSL_ALGORITHM_DEFINES
8738 #include <openssl/opensslconf.h>
8739 defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc.
8740 [Richard Levitte, Ulf and Bodo Möller]
8742 *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
8746 *) Change the 'other' type in certificate aux info to a STACK_OF
8747 X509_ALGOR. Although not an AlgorithmIdentifier as such it has
8748 the required ASN1 format: arbitrary types determined by an OID.
8751 *) Add some PEM_write_X509_REQ_NEW() functions and a command line
8752 argument to 'req'. This is not because the function is newer or
8753 better than others it just uses the work 'NEW' in the certificate
8754 request header lines. Some software needs this.
8757 *) Reorganise password command line arguments: now passwords can be
8758 obtained from various sources. Delete the PEM_cb function and make
8759 it the default behaviour: i.e. if the callback is NULL and the
8760 usrdata argument is not NULL interpret it as a null terminated pass
8761 phrase. If usrdata and the callback are NULL then the pass phrase
8762 is prompted for as usual.
8765 *) Add support for the Compaq Atalla crypto accelerator. If it is installed,
8766 the support is automatically enabled. The resulting binaries will
8767 autodetect the card and use it if present.
8768 [Ben Laurie and Compaq Inc.]
8770 *) Work around for Netscape hang bug. This sends certificate request
8771 and server done in one record. Since this is perfectly legal in the
8772 SSL/TLS protocol it isn't a "bug" option and is on by default. See
8773 the bugs/SSLv3 entry for more info.
8776 *) HP-UX tune-up: new unified configs, HP C compiler bug workaround.
8779 *) Add -rand argument to smime and pkcs12 applications and read/write
8783 *) New 'passwd' tool for crypt(3) and apr1 password hashes.
8786 *) Add command line password options to the remaining applications.
8789 *) Bug fix for BN_div_recp() for numerators with an even number of
8793 *) More tests in bntest.c, and changed test_bn output.
8796 *) ./config recognizes MacOS X now.
8799 *) Bug fix for BN_div() when the first words of num and divsor are
8800 equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0).
8803 *) Add support for various broken PKCS#8 formats, and command line
8804 options to produce them.
8807 *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
8808 get temporary BIGNUMs from a BN_CTX.
8811 *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
8815 *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and
8816 include a #define from the old name to the new. The original intent
8817 was that statically linked binaries could for example just call
8818 SSLeay_add_all_ciphers() to just add ciphers to the table and not
8819 link with digests. This never worked because SSLeay_add_all_digests()
8820 and SSLeay_add_all_ciphers() were in the same source file so calling
8821 one would link with the other. They are now in separate source files.
8824 *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
8827 *) Use a less unusual form of the Miller-Rabin primality test (it used
8828 a binary algorithm for exponentiation integrated into the Miller-Rabin
8829 loop, our standard modexp algorithms are faster).
8832 *) Support for the EBCDIC character set completed.
8833 [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>]
8835 *) Source code cleanups: use const where appropriate, eliminate casts,
8836 use void * instead of char * in lhash.
8839 *) Bugfix: ssl3_send_server_key_exchange was not restartable
8840 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
8841 this the server could overwrite ephemeral keys that the client
8845 *) Turn DSA_is_prime into a macro that calls BN_is_prime,
8846 using 50 iterations of the Rabin-Miller test.
8848 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
8849 iterations of the Rabin-Miller test as required by the appendix
8850 to FIPS PUB 186[-1]) instead of DSA_is_prime.
8851 As BN_is_prime_fasttest includes trial division, DSA parameter
8852 generation becomes much faster.
8854 This implies a change for the callback functions in DSA_is_prime
8855 and DSA_generate_parameters: The callback function is called once
8856 for each positive witness in the Rabin-Miller test, not just
8857 occasionally in the inner loop; and the parameters to the
8858 callback function now provide an iteration count for the outer
8859 loop rather than for the current invocation of the inner loop.
8860 DSA_generate_parameters additionally can call the callback
8861 function with an 'iteration count' of -1, meaning that a
8862 candidate has passed the trial division test (when q is generated
8863 from an application-provided seed, trial division is skipped).
8866 *) New function BN_is_prime_fasttest that optionally does trial
8867 division before starting the Rabin-Miller test and has
8868 an additional BN_CTX * argument (whereas BN_is_prime always
8869 has to allocate at least one BN_CTX).
8870 'callback(1, -1, cb_arg)' is called when a number has passed the
8871 trial division stage.
8874 *) Fix for bug in CRL encoding. The validity dates weren't being handled
8878 *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
8881 *) New function BN_pseudo_rand().
8884 *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
8885 bignum version of BN_from_montgomery() with the working code from
8886 SSLeay 0.9.0 (the word based version is faster anyway), and clean up
8890 *) Avoid a race condition in s2_clnt.c (function get_server_hello) that
8891 made it impossible to use the same SSL_SESSION data structure in
8892 SSL2 clients in multiple threads.
8895 *) The return value of RAND_load_file() no longer counts bytes obtained
8896 by stat(). RAND_load_file(..., -1) is new and uses the complete file
8897 to seed the PRNG (previously an explicit byte count was required).
8898 [Ulf Möller, Bodo Möller]
8900 *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
8901 used (char *) instead of (void *) and had casts all over the place.
8904 *) Make BN_generate_prime() return NULL on error if ret!=NULL.
8907 *) Retain source code compatibility for BN_prime_checks macro:
8908 BN_is_prime(..., BN_prime_checks, ...) now uses
8909 BN_prime_checks_for_size to determine the appropriate number of
8910 Rabin-Miller iterations.
8913 *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
8914 DH_CHECK_P_NOT_SAFE_PRIME.
8915 (Check if this is true? OpenPGP calls them "strong".)
8918 *) Merge the functionality of "dh" and "gendh" programs into a new program
8919 "dhparam". The old programs are retained for now but will handle DH keys
8920 (instead of parameters) in future.
8923 *) Make the ciphers, s_server and s_client programs check the return values
8924 when a new cipher list is set.
8927 *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
8928 ciphers. Before when the 56bit ciphers were enabled the sorting was
8931 The syntax for the cipher sorting has been extended to support sorting by
8932 cipher-strength (using the strength_bits hard coded in the tables).
8933 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
8935 Fix a bug in the cipher-command parser: when supplying a cipher command
8936 string with an "undefined" symbol (neither command nor alphanumeric
8937 [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now
8938 an error is flagged.
8940 Due to the strength-sorting extension, the code of the
8941 ssl_create_cipher_list() function was completely rearranged. I hope that
8942 the readability was also increased :-)
8943 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
8945 *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1
8946 for the first serial number and places 2 in the serial number file. This
8947 avoids problems when the root CA is created with serial number zero and
8948 the first user certificate has the same issuer name and serial number
8952 *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
8953 the new code. Add documentation for this stuff.
8956 *) Changes to X509_ATTRIBUTE utilities. These have been renamed from
8957 X509_*() to X509at_*() on the grounds that they don't handle X509
8958 structures and behave in an analogous way to the X509v3 functions:
8959 they shouldn't be called directly but wrapper functions should be used
8962 So we also now have some wrapper functions that call the X509at functions
8963 when passed certificate requests. (TO DO: similar things can be done with
8964 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
8965 things. Some of these need some d2i or i2d and print functionality
8966 because they handle more complex structures.)
8969 *) Add missing #ifndefs that caused missing symbols when building libssl
8970 as a shared library without RSA. Use #ifndef NO_SSL2 instead of
8971 NO_RSA in ssl/s2*.c.
8972 [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller]
8974 *) Precautions against using the PRNG uninitialized: RAND_bytes() now
8975 has a return value which indicates the quality of the random data
8976 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
8977 error queue. New function RAND_pseudo_bytes() generates output that is
8978 guaranteed to be unique but not unpredictable. RAND_add is like
8979 RAND_seed, but takes an extra argument for an entropy estimate
8980 (RAND_seed always assumes full entropy).
8983 *) Do more iterations of Rabin-Miller probable prime test (specifically,
8984 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
8985 instead of only 2 for all lengths; see BN_prime_checks_for_size definition
8986 in crypto/bn/bn_prime.c for the complete table). This guarantees a
8987 false-positive rate of at most 2^-80 for random input.
8990 *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
8993 *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
8994 in the 0.9.5 release), this returns the chain
8995 from an X509_CTX structure with a dup of the stack and all
8996 the X509 reference counts upped: so the stack will exist
8997 after X509_CTX_cleanup() has been called. Modify pkcs12.c
9000 Also make SSL_SESSION_print() print out the verify return
9004 *) Add manpage for the pkcs12 command. Also change the default
9005 behaviour so MAC iteration counts are used unless the new
9006 -nomaciter option is used. This improves file security and
9007 only older versions of MSIE (4.0 for example) need it.
9010 *) Honor the no-xxx Configure options when creating .DEF files.
9013 *) Add PKCS#10 attributes to field table: challengePassword,
9014 unstructuredName and unstructuredAddress. These are taken from
9015 draft PKCS#9 v2.0 but are compatible with v1.2 provided no
9016 international characters are used.
9018 More changes to X509_ATTRIBUTE code: allow the setting of types
9019 based on strings. Remove the 'loc' parameter when adding
9020 attributes because these will be a SET OF encoding which is sorted
9024 *) Initial changes to the 'req' utility to allow request generation
9025 automation. This will allow an application to just generate a template
9026 file containing all the field values and have req construct the
9029 Initial support for X509_ATTRIBUTE handling. Stacks of these are
9030 used all over the place including certificate requests and PKCS#7
9031 structures. They are currently handled manually where necessary with
9032 some primitive wrappers for PKCS#7. The new functions behave in a
9033 manner analogous to the X509 extension functions: they allow
9034 attributes to be looked up by NID and added.
9036 Later something similar to the X509V3 code would be desirable to
9037 automatically handle the encoding, decoding and printing of the
9038 more complex types. The string types like challengePassword can
9039 be handled by the string table functions.
9041 Also modified the multi byte string table handling. Now there is
9042 a 'global mask' which masks out certain types. The table itself
9043 can use the flag STABLE_NO_MASK to ignore the mask setting: this
9044 is useful when for example there is only one permissible type
9045 (as in countryName) and using the mask might result in no valid
9049 *) Clean up 'Finished' handling, and add functions SSL_get_finished and
9050 SSL_get_peer_finished to allow applications to obtain the latest
9051 Finished messages sent to the peer or expected from the peer,
9052 respectively. (SSL_get_peer_finished is usually the Finished message
9053 actually received from the peer, otherwise the protocol will be aborted.)
9055 As the Finished message are message digests of the complete handshake
9056 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
9057 be used for external authentication procedures when the authentication
9058 provided by SSL/TLS is not desired or is not enough.
9061 *) Enhanced support for Alpha Linux is added. Now ./config checks if
9062 the host supports BWX extension and if Compaq C is present on the
9063 $PATH. Just exploiting of the BWX extension results in 20-30%
9064 performance kick for some algorithms, e.g. DES and RC4 to mention
9065 a couple. Compaq C in turn generates ~20% faster code for MD5 and
9069 *) Add support for MS "fast SGC". This is arguably a violation of the
9070 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
9071 weak crypto and after checking the certificate is SGC a second one
9072 with strong crypto. MS SGC stops the first handshake after receiving
9073 the server certificate message and sends a second client hello. Since
9074 a server will typically do all the time consuming operations before
9075 expecting any further messages from the client (server key exchange
9076 is the most expensive) there is little difference between the two.
9078 To get OpenSSL to support MS SGC we have to permit a second client
9079 hello message after we have sent server done. In addition we have to
9080 reset the MAC if we do get this second client hello.
9083 *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide
9084 if a DER encoded private key is RSA or DSA traditional format. Changed
9085 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
9086 format DER encoded private key. Newer code should use PKCS#8 format which
9087 has the key type encoded in the ASN1 structure. Added DER private key
9088 support to pkcs8 application.
9091 *) SSL 3/TLS 1 servers now don't request certificates when an anonymous
9092 ciphersuites has been selected (as required by the SSL 3/TLS 1
9093 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
9094 is set, we interpret this as a request to violate the specification
9095 (the worst that can happen is a handshake failure, and 'correct'
9096 behaviour would result in a handshake failure anyway).
9099 *) In SSL_CTX_add_session, take into account that there might be multiple
9100 SSL_SESSION structures with the same session ID (e.g. when two threads
9101 concurrently obtain them from an external cache).
9102 The internal cache can handle only one SSL_SESSION with a given ID,
9103 so if there's a conflict, we now throw out the old one to achieve
9107 *) Add OIDs for idea and blowfish in CBC mode. This will allow both
9108 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
9109 some routines that use cipher OIDs: some ciphers do not have OIDs
9110 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
9114 *) Simplify the trust setting structure and code. Now we just have
9115 two sequences of OIDs for trusted and rejected settings. These will
9116 typically have values the same as the extended key usage extension
9117 and any application specific purposes.
9119 The trust checking code now has a default behaviour: it will just
9120 check for an object with the same NID as the passed id. Functions can
9121 be provided to override either the default behaviour or the behaviour
9122 for a given id. SSL client, server and email already have functions
9123 in place for compatibility: they check the NID and also return "trusted"
9124 if the certificate is self signed.
9127 *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the
9128 traditional format into an EVP_PKEY structure.
9131 *) Add a password callback function PEM_cb() which either prompts for
9132 a password if usr_data is NULL or otherwise assumes it is a null
9133 terminated password. Allow passwords to be passed on command line
9134 environment or config files in a few more utilities.
9137 *) Add a bunch of DER and PEM functions to handle PKCS#8 format private
9138 keys. Add some short names for PKCS#8 PBE algorithms and allow them
9139 to be specified on the command line for the pkcs8 and pkcs12 utilities.
9140 Update documentation.
9143 *) Support for ASN1 "NULL" type. This could be handled before by using
9144 ASN1_TYPE but there wasn't any function that would try to read a NULL
9145 and produce an error if it couldn't. For compatibility we also have
9146 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
9147 don't allocate anything because they don't need to.
9150 *) Initial support for MacOS is now provided. Examine INSTALL.MacOS
9152 [Andy Polyakov, Roy Woods <roy@centicsystems.ca>]
9154 *) Rebuild of the memory allocation routines used by OpenSSL code and
9155 possibly others as well. The purpose is to make an interface that
9156 provide hooks so anyone can build a separate set of allocation and
9157 deallocation routines to be used by OpenSSL, for example memory
9158 pool implementations, or something else, which was previously hard
9159 since Malloc(), Realloc() and Free() were defined as macros having
9160 the values malloc, realloc and free, respectively (except for Win32
9161 compilations). The same is provided for memory debugging code.
9162 OpenSSL already comes with functionality to find memory leaks, but
9163 this gives people a chance to debug other memory problems.
9165 With these changes, a new set of functions and macros have appeared:
9167 CRYPTO_set_mem_debug_functions() [F]
9168 CRYPTO_get_mem_debug_functions() [F]
9169 CRYPTO_dbg_set_options() [F]
9170 CRYPTO_dbg_get_options() [F]
9171 CRYPTO_malloc_debug_init() [M]
9173 The memory debug functions are NULL by default, unless the library
9174 is compiled with CRYPTO_MDEBUG or friends is defined. If someone
9175 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
9176 gives the standard debugging functions that come with OpenSSL) or
9177 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
9178 provided by the library user) must be used. When the standard
9179 debugging functions are used, CRYPTO_dbg_set_options can be used to
9180 request additional information:
9181 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
9182 the CRYPTO_MDEBUG_xxx macro when compiling the library.
9184 Also, things like CRYPTO_set_mem_functions will always give the
9185 expected result (the new set of functions is used for allocation
9186 and deallocation) at all times, regardless of platform and compiler
9189 To finish it up, some functions that were never use in any other
9190 way than through macros have a new API and new semantic:
9193 CRYPTO_dbg_realloc()
9196 All macros of value have retained their old syntax.
9197 [Richard Levitte and Bodo Moeller]
9199 *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
9200 ordering of SMIMECapabilities wasn't in "strength order" and there
9201 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
9205 *) Some ASN1 types with illegal zero length encoding (INTEGER,
9206 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
9207 [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson]
9209 *) Merge in my S/MIME library for OpenSSL. This provides a simple
9210 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
9211 functionality to handle multipart/signed properly) and a utility
9212 called 'smime' to call all this stuff. This is based on code I
9213 originally wrote for Celo who have kindly allowed it to be
9214 included in OpenSSL.
9217 *) Add variants des_set_key_checked and des_set_key_unchecked of
9218 des_set_key (aka des_key_sched). Global variable des_check_key
9219 decides which of these is called by des_set_key; this way
9220 des_check_key behaves as it always did, but applications and
9221 the library itself, which was buggy for des_check_key == 1,
9222 have a cleaner way to pick the version they need.
9225 *) New function PKCS12_newpass() which changes the password of a
9229 *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and
9230 dynamic mix. In both cases the ids can be used as an index into the
9231 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
9232 functions so they accept a list of the field values and the
9233 application doesn't need to directly manipulate the X509_TRUST
9237 *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
9241 *) Modify the way the V3 extension code looks up extensions. This now
9242 works in a similar way to the object code: we have some "standard"
9243 extensions in a static table which is searched with OBJ_bsearch()
9244 and the application can add dynamic ones if needed. The file
9245 crypto/x509v3/ext_dat.h now has the info: this file needs to be
9246 updated whenever a new extension is added to the core code and kept
9247 in ext_nid order. There is a simple program 'tabtest.c' which checks
9248 this. New extensions are not added too often so this file can readily
9249 be maintained manually.
9251 There are two big advantages in doing things this way. The extensions
9252 can be looked up immediately and no longer need to be "added" using
9253 X509V3_add_standard_extensions(): this function now does nothing.
9254 [Side note: I get *lots* of email saying the extension code doesn't
9255 work because people forget to call this function]
9256 Also no dynamic allocation is done unless new extensions are added:
9257 so if we don't add custom extensions there is no need to call
9258 X509V3_EXT_cleanup().
9261 *) Modify enc utility's salting as follows: make salting the default. Add a
9262 magic header, so unsalted files fail gracefully instead of just decrypting
9263 to garbage. This is because not salting is a big security hole, so people
9264 should be discouraged from doing it.
9267 *) Fixes and enhancements to the 'x509' utility. It allowed a message
9268 digest to be passed on the command line but it only used this
9269 parameter when signing a certificate. Modified so all relevant
9270 operations are affected by the digest parameter including the
9271 -fingerprint and -x509toreq options. Also -x509toreq choked if a
9272 DSA key was used because it didn't fix the digest.
9275 *) Initial certificate chain verify code. Currently tests the untrusted
9276 certificates for consistency with the verify purpose (which is set
9277 when the X509_STORE_CTX structure is set up) and checks the pathlength.
9279 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
9280 this is because it will reject chains with invalid extensions whereas
9281 every previous version of OpenSSL and SSLeay made no checks at all.
9283 Trust code: checks the root CA for the relevant trust settings. Trust
9284 settings have an initial value consistent with the verify purpose: e.g.
9285 if the verify purpose is for SSL client use it expects the CA to be
9286 trusted for SSL client use. However the default value can be changed to
9287 permit custom trust settings: one example of this would be to only trust
9288 certificates from a specific "secure" set of CAs.
9290 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
9291 which should be used for version portability: especially since the
9292 verify structure is likely to change more often now.
9294 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
9295 to set them. If not set then assume SSL clients will verify SSL servers
9298 Two new options to the verify program: -untrusted allows a set of
9299 untrusted certificates to be passed in and -purpose which sets the
9300 intended purpose of the certificate. If a purpose is set then the
9301 new chain verify code is used to check extension consistency.
9304 *) Support for the authority information access extension.
9307 *) Modify RSA and DSA PEM read routines to transparently handle
9308 PKCS#8 format private keys. New *_PUBKEY_* functions that handle
9309 public keys in a format compatible with certificate
9310 SubjectPublicKeyInfo structures. Unfortunately there were already
9311 functions called *_PublicKey_* which used various odd formats so
9312 these are retained for compatibility: however the DSA variants were
9313 never in a public release so they have been deleted. Changed dsa/rsa
9314 utilities to handle the new format: note no releases ever handled public
9315 keys so we should be OK.
9317 The primary motivation for this change is to avoid the same fiasco
9318 that dogs private keys: there are several incompatible private key
9319 formats some of which are standard and some OpenSSL specific and
9320 require various evil hacks to allow partial transparent handling and
9321 even then it doesn't work with DER formats. Given the option anything
9322 other than PKCS#8 should be dumped: but the other formats have to
9323 stay in the name of compatibility.
9325 With public keys and the benefit of hindsight one standard format
9326 is used which works with EVP_PKEY, RSA or DSA structures: though
9327 it clearly returns an error if you try to read the wrong kind of key.
9329 Added a -pubkey option to the 'x509' utility to output the public key.
9330 Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*()
9331 (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add
9332 EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*())
9333 that do the same as the EVP_PKEY_assign_*() except they up the
9334 reference count of the added key (they don't "swallow" the
9338 *) Fixes to crypto/x509/by_file.c the code to read in certificates and
9339 CRLs would fail if the file contained no certificates or no CRLs:
9340 added a new function to read in both types and return the number
9341 read: this means that if none are read it will be an error. The
9342 DER versions of the certificate and CRL reader would always fail
9343 because it isn't possible to mix certificates and CRLs in DER format
9344 without choking one or the other routine. Changed this to just read
9345 a certificate: this is the best we can do. Also modified the code
9346 in apps/verify.c to take notice of return codes: it was previously
9347 attempting to read in certificates from NULL pointers and ignoring
9348 any errors: this is one reason why the cert and CRL reader seemed
9349 to work. It doesn't check return codes from the default certificate
9350 routines: these may well fail if the certificates aren't installed.
9353 *) Code to support otherName option in GeneralName.
9356 *) First update to verify code. Change the verify utility
9357 so it warns if it is passed a self signed certificate:
9358 for consistency with the normal behaviour. X509_verify
9359 has been modified to it will now verify a self signed
9360 certificate if *exactly* the same certificate appears
9361 in the store: it was previously impossible to trust a
9362 single self signed certificate. This means that:
9363 openssl verify ss.pem
9364 now gives a warning about a self signed certificate but
9365 openssl verify -CAfile ss.pem ss.pem
9369 *) For servers, store verify_result in SSL_SESSION data structure
9370 (and add it to external session representation).
9371 This is needed when client certificate verifications fails,
9372 but an application-provided verification callback (set by
9373 SSL_CTX_set_cert_verify_callback) allows accepting the session
9374 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
9375 but returns 1): When the session is reused, we have to set
9376 ssl->verify_result to the appropriate error code to avoid
9378 [Bodo Moeller, problem pointed out by Lutz Jaenicke]
9380 *) Fix a bug in the new PKCS#7 code: it didn't consider the
9381 case in PKCS7_dataInit() where the signed PKCS7 structure
9382 didn't contain any existing data because it was being created.
9383 [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson]
9385 *) Add a salt to the key derivation routines in enc.c. This
9386 forms the first 8 bytes of the encrypted file. Also add a
9387 -S option to allow a salt to be input on the command line.
9390 *) New function X509_cmp(). Oddly enough there wasn't a function
9391 to compare two certificates. We do this by working out the SHA1
9392 hash and comparing that. X509_cmp() will be needed by the trust
9396 *) SSL_get1_session() is like SSL_get_session(), but increments
9397 the reference count in the SSL_SESSION returned.
9398 [Geoff Thorpe <geoff@eu.c2.net>]
9400 *) Fix for 'req': it was adding a null to request attributes.
9401 Also change the X509_LOOKUP and X509_INFO code to handle
9402 certificate auxiliary information.
9405 *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document
9409 *) Add the possibility to add extra information to the memory leak
9410 detecting output, to form tracebacks, showing from where each
9411 allocation was originated: CRYPTO_push_info("constant string") adds
9412 the string plus current file name and line number to a per-thread
9413 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
9414 is like calling CYRPTO_pop_info() until the stack is empty.
9415 Also updated memory leak detection code to be multi-thread-safe.
9418 *) Add options -text and -noout to pkcs7 utility and delete the
9419 encryption options which never did anything. Update docs.
9422 *) Add options to some of the utilities to allow the pass phrase
9423 to be included on either the command line (not recommended on
9424 OSes like Unix) or read from the environment. Update the
9425 manpages and fix a few bugs.
9428 *) Add a few manpages for some of the openssl commands.
9431 *) Fix the -revoke option in ca. It was freeing up memory twice,
9432 leaking and not finding already revoked certificates.
9435 *) Extensive changes to support certificate auxiliary information.
9436 This involves the use of X509_CERT_AUX structure and X509_AUX
9437 functions. An X509_AUX function such as PEM_read_X509_AUX()
9438 can still read in a certificate file in the usual way but it
9439 will also read in any additional "auxiliary information". By
9440 doing things this way a fair degree of compatibility can be
9441 retained: existing certificates can have this information added
9442 using the new 'x509' options.
9444 Current auxiliary information includes an "alias" and some trust
9445 settings. The trust settings will ultimately be used in enhanced
9446 certificate chain verification routines: currently a certificate
9447 can only be trusted if it is self signed and then it is trusted
9451 *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD).
9452 The problem was that one of the replacement routines had not been working
9453 since SSLeay releases. For now the offending routine has been replaced
9454 with non-optimised assembler. Even so, this now gives around 95%
9455 performance improvement for 1024 bit RSA signs.
9458 *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2
9459 handling. Most clients have the effective key size in bits equal to
9460 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
9461 A few however don't do this and instead use the size of the decrypted key
9462 to determine the RC2 key length and the AlgorithmIdentifier to determine
9463 the effective key length. In this case the effective key length can still
9464 be 40 bits but the key length can be 168 bits for example. This is fixed
9465 by manually forcing an RC2 key into the EVP_PKEY structure because the
9466 EVP code can't currently handle unusual RC2 key sizes: it always assumes
9467 the key length and effective key length are equal.
9470 *) Add a bunch of functions that should simplify the creation of
9471 X509_NAME structures. Now you should be able to do:
9472 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
9473 and have it automatically work out the correct field type and fill in
9474 the structures. The more adventurous can try:
9475 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
9476 and it will (hopefully) work out the correct multibyte encoding.
9479 *) Change the 'req' utility to use the new field handling and multibyte
9480 copy routines. Before the DN field creation was handled in an ad hoc
9481 way in req, ca, and x509 which was rather broken and didn't support
9482 BMPStrings or UTF8Strings. Since some software doesn't implement
9483 BMPStrings or UTF8Strings yet, they can be enabled using the config file
9484 using the dirstring_type option. See the new comment in the default
9485 openssl.cnf for more info.
9488 *) Make crypto/rand/md_rand.c more robust:
9489 - Assure unique random numbers after fork().
9490 - Make sure that concurrent threads access the global counter and
9491 md serializably so that we never lose entropy in them
9492 or use exactly the same state in multiple threads.
9493 Access to the large state is not always serializable because
9494 the additional locking could be a performance killer, and
9495 md should be large enough anyway.
9498 *) New file apps/app_rand.c with commonly needed functionality
9499 for handling the random seed file.
9501 Use the random seed file in some applications that previously did not:
9503 dsaparam -genkey (which also ignored its '-rand' option),
9506 x509 (when signing).
9507 Except on systems with /dev/urandom, it is crucial to have a random
9508 seed file at least for key creation, DSA signing, and for DH exchanges;
9509 for RSA signatures we could do without one.
9511 gendh and gendsa (unlike genrsa) used to read only the first byte
9512 of each file listed in the '-rand' option. The function as previously
9513 found in genrsa is now in app_rand.c and is used by all programs
9514 that support '-rand'.
9517 *) In RAND_write_file, use mode 0600 for creating files;
9518 don't just chmod when it may be too late.
9521 *) Report an error from X509_STORE_load_locations
9522 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
9525 *) New function ASN1_mbstring_copy() this copies a string in either
9526 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
9527 into an ASN1_STRING type. A mask of permissible types is passed
9528 and it chooses the "minimal" type to use or an error if not type
9532 *) Add function equivalents to the various macros in asn1.h. The old
9533 macros are retained with an M_ prefix. Code inside the library can
9534 use the M_ macros. External code (including the openssl utility)
9535 should *NOT* in order to be "shared library friendly".
9538 *) Add various functions that can check a certificate's extensions
9539 to see if it usable for various purposes such as SSL client,
9540 server or S/MIME and CAs of these types. This is currently
9541 VERY EXPERIMENTAL but will ultimately be used for certificate chain
9542 verification. Also added a -purpose flag to x509 utility to
9543 print out all the purposes.
9546 *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated
9550 *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search
9551 for, obtain and decode and extension and obtain its critical flag.
9552 This allows all the necessary extension code to be handled in a
9553 single function call.
9556 *) RC4 tune-up featuring 30-40% performance improvement on most RISC
9557 platforms. See crypto/rc4/rc4_enc.c for further details.
9560 *) New -noout option to asn1parse. This causes no output to be produced
9561 its main use is when combined with -strparse and -out to extract data
9562 from a file (which may not be in ASN.1 format).
9565 *) Fix for pkcs12 program. It was hashing an invalid certificate pointer
9566 when producing the local key id.
9567 [Richard Levitte <levitte@stacken.kth.se>]
9569 *) New option -dhparam in s_server. This allows a DH parameter file to be
9570 stated explicitly. If it is not stated then it tries the first server
9571 certificate file. The previous behaviour hard coded the filename
9575 *) Add -pubin and -pubout options to the rsa and dsa commands. These allow
9576 a public key to be input or output. For example:
9577 openssl rsa -in key.pem -pubout -out pubkey.pem
9578 Also added necessary DSA public key functions to handle this.
9581 *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
9582 in the message. This was handled by allowing
9583 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
9584 [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>]
9586 *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
9587 to the end of the strings whereas this didn't. This would cause problems
9588 if strings read with d2i_ASN1_bytes() were later modified.
9589 [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>]
9591 *) Fix for base64 decode bug. When a base64 bio reads only one line of
9592 data and it contains EOF it will end up returning an error. This is
9593 caused by input 46 bytes long. The cause is due to the way base64
9594 BIOs find the start of base64 encoded data. They do this by trying a
9595 trial decode on each line until they find one that works. When they
9596 do a flag is set and it starts again knowing it can pass all the
9597 data directly through the decoder. Unfortunately it doesn't reset
9598 the context it uses. This means that if EOF is reached an attempt
9599 is made to pass two EOFs through the context and this causes the
9600 resulting error. This can also cause other problems as well. As is
9601 usual with these problems it takes *ages* to find and the fix is
9602 trivial: move one line.
9603 [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ]
9605 *) Ugly workaround to get s_client and s_server working under Windows. The
9606 old code wouldn't work because it needed to select() on sockets and the
9607 tty (for keypresses and to see if data could be written). Win32 only
9608 supports select() on sockets so we select() with a 1s timeout on the
9609 sockets and then see if any characters are waiting to be read, if none
9610 are present then we retry, we also assume we can always write data to
9611 the tty. This isn't nice because the code then blocks until we've
9612 received a complete line of data and it is effectively polling the
9613 keyboard at 1s intervals: however it's quite a bit better than not
9614 working at all :-) A dedicated Windows application might handle this
9615 with an event loop for example.
9618 *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
9619 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
9620 will be called when RSA_sign() and RSA_verify() are used. This is useful
9621 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
9622 For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
9623 should *not* be used: RSA_sign() and RSA_verify() must be used instead.
9624 This necessitated the support of an extra signature type NID_md5_sha1
9625 for SSL signatures and modifications to the SSL library to use it instead
9626 of calling RSA_public_decrypt() and RSA_private_encrypt().
9629 *) Add new -verify -CAfile and -CApath options to the crl program, these
9630 will lookup a CRL issuers certificate and verify the signature in a
9631 similar way to the verify program. Tidy up the crl program so it
9632 no longer accesses structures directly. Make the ASN1 CRL parsing a bit
9633 less strict. It will now permit CRL extensions even if it is not
9634 a V2 CRL: this will allow it to tolerate some broken CRLs.
9637 *) Initialize all non-automatic variables each time one of the openssl
9638 sub-programs is started (this is necessary as they may be started
9639 multiple times from the "OpenSSL>" prompt).
9640 [Lennart Bang, Bodo Moeller]
9642 *) Preliminary compilation option RSA_NULL which disables RSA crypto without
9643 removing all other RSA functionality (this is what NO_RSA does). This
9644 is so (for example) those in the US can disable those operations covered
9645 by the RSA patent while allowing storage and parsing of RSA keys and RSA
9649 *) Non-copying interface to BIO pairs.
9650 (still largely untested)
9653 *) New function ANS1_tag2str() to convert an ASN1 tag to a descriptive
9654 ASCII string. This was handled independently in various places before.
9657 *) New functions UTF8_getc() and UTF8_putc() that parse and generate
9658 UTF8 strings a character at a time.
9661 *) Use client_version from client hello to select the protocol
9662 (s23_srvr.c) and for RSA client key exchange verification
9663 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
9666 *) Add various utility functions to handle SPKACs, these were previously
9667 handled by poking round in the structure internals. Added new function
9668 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
9669 print, verify and generate SPKACs. Based on an original idea from
9670 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
9673 *) RIPEMD160 is operational on all platforms and is back in 'make test'.
9676 *) Allow the config file extension section to be overwritten on the
9677 command line. Based on an original idea from Massimiliano Pala
9678 <madwolf@comune.modena.it>. The new option is called -extensions
9679 and can be applied to ca, req and x509. Also -reqexts to override
9680 the request extensions in req and -crlexts to override the crl extensions
9684 *) Add new feature to the SPKAC handling in ca. Now you can include
9685 the same field multiple times by preceding it by "XXXX." for example:
9688 this is the same syntax as used in the req config file.
9691 *) Allow certificate extensions to be added to certificate requests. These
9692 are specified in a 'req_extensions' option of the req section of the
9693 config file. They can be printed out with the -text option to req but
9694 are otherwise ignored at present.
9697 *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
9698 data read consists of only the final block it would not decrypted because
9699 EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
9700 A misplaced 'break' also meant the decrypted final block might not be
9701 copied until the next read.
9704 *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
9705 a few extra parameters to the DH structure: these will be useful if
9706 for example we want the value of 'q' or implement X9.42 DH.
9709 *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and
9710 provides hooks that allow the default DSA functions or functions on a
9711 "per key" basis to be replaced. This allows hardware acceleration and
9712 hardware key storage to be handled without major modification to the
9713 library. Also added low level modexp hooks and CRYPTO_EX structure and
9714 associated functions.
9717 *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
9718 as "read only": it can't be written to and the buffer it points to will
9719 not be freed. Reading from a read only BIO is much more efficient than
9720 a normal memory BIO. This was added because there are several times when
9721 an area of memory needs to be read from a BIO. The previous method was
9722 to create a memory BIO and write the data to it, this results in two
9723 copies of the data and an O(n^2) reading algorithm. There is a new
9724 function BIO_new_mem_buf() which creates a read only memory BIO from
9725 an area of memory. Also modified the PKCS#7 routines to use read only
9729 *) Bugfix: ssl23_get_client_hello did not work properly when called in
9730 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
9731 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
9732 but a retry condition occured while trying to read the rest.
9735 *) The PKCS7_ENC_CONTENT_new() function was setting the content type as
9736 NID_pkcs7_encrypted by default: this was wrong since this should almost
9737 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
9738 the encrypted data type: this is a more sensible place to put it and it
9739 allows the PKCS#12 code to be tidied up that duplicated this
9743 *) Changed obj_dat.pl script so it takes its input and output files on
9744 the command line. This should avoid shell escape redirection problems
9748 *) Initial support for certificate extension requests, these are included
9749 in things like Xenroll certificate requests. Included functions to allow
9750 extensions to be obtained and added.
9753 *) -crlf option to s_client and s_server for sending newlines as
9754 CRLF (as required by many protocols).
9757 Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
9759 *) Install libRSAglue.a when OpenSSL is built with RSAref.
9760 [Ralf S. Engelschall]
9762 *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency.
9763 [Andrija Antonijevic <TheAntony2@bigfoot.com>]
9765 *) Fix -startdate and -enddate (which was missing) arguments to 'ca'
9769 *) New function DSA_dup_DH, which duplicates DSA parameters/keys as
9770 DH parameters/keys (q is lost during that conversion, but the resulting
9771 DH parameters contain its length).
9773 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
9774 much faster than DH_generate_parameters (which creates parameters
9775 where p = 2*q + 1), and also the smaller q makes DH computations
9776 much more efficient (160-bit exponentiation instead of 1024-bit
9777 exponentiation); so this provides a convenient way to support DHE
9778 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
9779 utter importance to use
9780 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
9782 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
9783 when such DH parameters are used, because otherwise small subgroup
9784 attacks may become possible!
9787 *) Avoid memory leak in i2d_DHparams.
9790 *) Allow the -k option to be used more than once in the enc program:
9791 this allows the same encrypted message to be read by multiple recipients.
9794 *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
9795 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
9796 it will always use the numerical form of the OID, even if it has a short
9800 *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
9801 method only got called if p,q,dmp1,dmq1,iqmp components were present,
9802 otherwise bn_mod_exp was called. In the case of hardware keys for example
9803 no private key components need be present and it might store extra data
9804 in the RSA structure, which cannot be accessed from bn_mod_exp.
9805 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
9806 private key operations.
9809 *) Added support for SPARC Linux.
9812 *) pem_password_cb function type incompatibly changed from
9813 typedef int pem_password_cb(char *buf, int size, int rwflag);
9815 ....(char *buf, int size, int rwflag, void *userdata);
9816 so that applications can pass data to their callbacks:
9817 The PEM[_ASN1]_{read,write}... functions and macros now take an
9818 additional void * argument, which is just handed through whenever
9819 the password callback is called.
9820 [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller]
9822 New function SSL_CTX_set_default_passwd_cb_userdata.
9824 Compatibility note: As many C implementations push function arguments
9825 onto the stack in reverse order, the new library version is likely to
9826 interoperate with programs that have been compiled with the old
9827 pem_password_cb definition (PEM_whatever takes some data that
9828 happens to be on the stack as its last argument, and the callback
9829 just ignores this garbage); but there is no guarantee whatsoever that
9832 *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
9833 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
9834 problems not only on Windows, but also on some Unix platforms.
9835 To avoid problematic command lines, these definitions are now in an
9836 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
9837 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
9840 *) MIPS III/IV assembler module is reimplemented.
9843 *) More DES library cleanups: remove references to srand/rand and
9844 delete an unused file.
9847 *) Add support for the the free Netwide assembler (NASM) under Win32,
9848 since not many people have MASM (ml) and it can be hard to obtain.
9849 This is currently experimental but it seems to work OK and pass all
9850 the tests. Check out INSTALL.W32 for info.
9853 *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
9854 without temporary keys kept an extra copy of the server key,
9855 and connections with temporary keys did not free everything in case
9859 *) New function RSA_check_key and new openssl rsa option -check
9860 for verifying the consistency of RSA keys.
9861 [Ulf Moeller, Bodo Moeller]
9863 *) Various changes to make Win32 compile work:
9864 1. Casts to avoid "loss of data" warnings in p5_crpt2.c
9865 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
9866 comparison" warnings.
9867 3. Add sk_<TYPE>_sort to DEF file generator and do make update.
9870 *) Add a debugging option to PKCS#5 v2 key generation function: when
9871 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
9872 derived keys are printed to stderr.
9875 *) Copy the flags in ASN1_STRING_dup().
9876 [Roman E. Pavlov <pre@mo.msk.ru>]
9878 *) The x509 application mishandled signing requests containing DSA
9879 keys when the signing key was also DSA and the parameters didn't match.
9881 It was supposed to omit the parameters when they matched the signing key:
9882 the verifying software was then supposed to automatically use the CA's
9883 parameters if they were absent from the end user certificate.
9885 Omitting parameters is no longer recommended. The test was also
9886 the wrong way round! This was probably due to unusual behaviour in
9887 EVP_cmp_parameters() which returns 1 if the parameters match.
9888 This meant that parameters were omitted when they *didn't* match and
9889 the certificate was useless. Certificates signed with 'ca' didn't have
9891 [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>]
9893 *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
9894 The interface is as follows:
9895 Applications can use
9896 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
9897 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
9898 "off" is now the default.
9899 The library internally uses
9900 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
9901 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
9902 to disable memory-checking temporarily.
9904 Some inconsistent states that previously were possible (and were
9905 even the default) are now avoided.
9907 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
9908 with each memory chunk allocated; this is occasionally more helpful
9909 than just having a counter.
9911 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
9913 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
9917 *) Introduce "mode" for SSL structures (with defaults in SSL_CTX),
9918 which largely parallels "options", but is for changing API behaviour,
9919 whereas "options" are about protocol behaviour.
9920 Initial "mode" flags are:
9922 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when
9923 a single record has been written.
9924 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write
9925 retries use the same buffer location.
9926 (But all of the contents must be
9930 *) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options
9933 *) Fix problems with no-hmac etc.
9934 [Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>]
9936 *) New functions RSA_get_default_method(), RSA_set_method() and
9937 RSA_get_method(). These allows replacement of RSA_METHODs without having
9938 to mess around with the internals of an RSA structure.
9941 *) Fix memory leaks in DSA_do_sign and DSA_is_prime.
9942 Also really enable memory leak checks in openssl.c and in some
9944 [Chad C. Mulligan, Bodo Moeller]
9946 *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
9947 up the length of negative integers. This has now been simplified to just
9948 store the length when it is first determined and use it later, rather
9949 than trying to keep track of where data is copied and updating it to
9951 [Steve Henson, reported by Brien Wheeler
9952 <bwheeler@authentica-security.com>]
9954 *) Add a new function PKCS7_signatureVerify. This allows the verification
9955 of a PKCS#7 signature but with the signing certificate passed to the
9956 function itself. This contrasts with PKCS7_dataVerify which assumes the
9957 certificate is present in the PKCS#7 structure. This isn't always the
9958 case: certificates can be omitted from a PKCS#7 structure and be
9959 distributed by "out of band" means (such as a certificate database).
9962 *) Complete the PEM_* macros with DECLARE_PEM versions to replace the
9963 function prototypes in pem.h, also change util/mkdef.pl to add the
9964 necessary function names.
9967 *) mk1mf.pl (used by Windows builds) did not properly read the
9968 options set by Configure in the top level Makefile, and Configure
9969 was not even able to write more than one option correctly.
9970 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
9973 *) New functions CONF_load_bio() and CONF_load_fp() to allow a config
9974 file to be loaded from a BIO or FILE pointer. The BIO version will
9975 for example allow memory BIOs to contain config info.
9978 *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
9979 Whoever hopes to achieve shared-library compatibility across versions
9980 must use this, not the compile-time macro.
9981 (Exercise 0.9.4: Which is the minimum library version required by
9983 Note: All this applies only to multi-threaded programs, others don't
9987 *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests
9988 through a BIO pair triggered the default case, i.e.
9989 SSLerr(...,SSL_R_UNKNOWN_STATE).
9992 *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
9993 can use the SSL library even if none of the specific BIOs is
9997 *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
9998 for the encoded length.
9999 [Jeon KyoungHo <khjeon@sds.samsung.co.kr>]
10001 *) Add initial documentation of the X509V3 functions.
10004 *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and
10005 PEM_write_bio_PKCS8PrivateKey() that are equivalent to
10006 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
10007 secure PKCS#8 private key format with a high iteration count.
10010 *) Fix determination of Perl interpreter: A perl or perl5
10011 _directory_ in $PATH was also accepted as the interpreter.
10012 [Ralf S. Engelschall]
10014 *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking
10015 wrong with it but it was very old and did things like calling
10016 PEM_ASN1_read() directly and used MD5 for the hash not to mention some
10017 unusual formatting.
10020 *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed
10021 to use the new extension code.
10024 *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
10025 with macros. This should make it easier to change their form, add extra
10026 arguments etc. Fix a few PEM prototypes which didn't have cipher as a
10030 *) Add to configuration table a new entry that can specify an alternative
10031 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
10032 according to Mark Crispin <MRC@Panda.COM>.
10036 *) DES CBC did not update the IV. Weird.
10039 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
10040 Changing the behaviour of the former might break existing programs --
10041 where IV updating is needed, des_ncbc_encrypt can be used.
10044 *) When bntest is run from "make test" it drives bc to check its
10045 calculations, as well as internally checking them. If an internal check
10046 fails, it needs to cause bc to give a non-zero result or make test carries
10047 on without noticing the failure. Fixed.
10050 *) DES library cleanups.
10053 *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
10054 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
10055 ciphers. NOTE: although the key derivation function has been verified
10056 against some published test vectors it has not been extensively tested
10057 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
10061 *) Instead of "mkdir -p", which is not fully portable, use new
10062 Perl script "util/mkdir-p.pl".
10065 *) Rewrite the way password based encryption (PBE) is handled. It used to
10066 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
10067 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
10068 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
10069 the 'parameter' field of the AlgorithmIdentifier is passed to the
10070 underlying key generation function so it must do its own ASN1 parsing.
10071 This has also changed the EVP_PBE_CipherInit() function which now has a
10072 'parameter' argument instead of literal salt and iteration count values
10073 and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
10076 *) Support for PKCS#5 v1.5 compatible password based encryption algorithms
10077 and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
10078 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
10079 KEY" because this clashed with PKCS#8 unencrypted string. Since this
10080 value was just used as a "magic string" and not used directly its
10081 value doesn't matter.
10084 *) Introduce some semblance of const correctness to BN. Shame C doesn't
10088 *) "linux-sparc64" configuration (ultrapenguin).
10089 [Ray Miller <ray.miller@oucs.ox.ac.uk>]
10090 "linux-sparc" configuration.
10091 [Christian Forster <fo@hawo.stw.uni-erlangen.de>]
10093 *) config now generates no-xxx options for missing ciphers.
10096 *) Support the EBCDIC character set (work in progress).
10097 File ebcdic.c not yet included because it has a different license.
10098 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
10100 *) Support BS2000/OSD-POSIX.
10101 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
10103 *) Make callbacks for key generation use void * instead of char *.
10106 *) Make S/MIME samples compile (not yet tested).
10109 *) Additional typesafe stacks.
10112 *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
10116 Changes between 0.9.3 and 0.9.3a [29 May 1999]
10118 *) New configuration variant "sco5-gcc".
10120 *) Updated some demos.
10121 [Sean O Riordain, Wade Scholine]
10123 *) Add missing BIO_free at exit of pkcs12 application.
10126 *) Fix memory leak in conf.c.
10129 *) Updates for Win32 to assembler version of MD5.
10132 *) Set #! path to perl in apps/der_chop to where we found it
10133 instead of using a fixed path.
10136 *) SHA library changes for irix64-mips4-cc.
10139 *) Improvements for VMS support.
10143 Changes between 0.9.2b and 0.9.3 [24 May 1999]
10145 *) Bignum library bug fix. IRIX 6 passes "make test" now!
10146 This also avoids the problems with SC4.2 and unpatched SC5.
10147 [Andy Polyakov <appro@fy.chalmers.se>]
10149 *) New functions sk_num, sk_value and sk_set to replace the previous macros.
10150 These are required because of the typesafe stack would otherwise break
10151 existing code. If old code used a structure member which used to be STACK
10152 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
10153 sk_num or sk_value it would produce an error because the num, data members
10154 are not present in STACK_OF. Now it just produces a warning. sk_set
10155 replaces the old method of assigning a value to sk_value
10156 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
10157 that does this will no longer work (and should use sk_set instead) but
10158 this could be regarded as a "questionable" behaviour anyway.
10161 *) Fix most of the other PKCS#7 bugs. The "experimental" code can now
10162 correctly handle encrypted S/MIME data.
10165 *) Change type of various DES function arguments from des_cblock
10166 (which means, in function argument declarations, pointer to char)
10167 to des_cblock * (meaning pointer to array with 8 char elements),
10168 which allows the compiler to do more typechecking; it was like
10169 that back in SSLeay, but with lots of ugly casts.
10171 Introduce new type const_des_cblock.
10174 *) Reorganise the PKCS#7 library and get rid of some of the more obvious
10175 problems: find RecipientInfo structure that matches recipient certificate
10176 and initialise the ASN1 structures properly based on passed cipher.
10179 *) Belatedly make the BN tests actually check the results.
10182 *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
10183 to and from BNs: it was completely broken. New compilation option
10184 NEG_PUBKEY_BUG to allow for some broken certificates that encode public
10185 key elements as negative integers.
10188 *) Reorganize and speed up MD5.
10189 [Andy Polyakov <appro@fy.chalmers.se>]
10192 [Richard Levitte <richard@levitte.org>]
10194 *) New option -out to asn1parse to allow the parsed structure to be
10195 output to a file. This is most useful when combined with the -strparse
10196 option to examine the output of things like OCTET STRINGS.
10199 *) Make SSL library a little more fool-proof by not requiring any longer
10200 that SSL_set_{accept,connect}_state be called before
10201 SSL_{accept,connect} may be used (SSL_set_..._state is omitted
10202 in many applications because usually everything *appeared* to work as
10203 intended anyway -- now it really works as intended).
10206 *) Move openssl.cnf out of lib/.
10209 *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall
10210 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
10211 -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+
10212 [Ralf S. Engelschall]
10214 *) Various fixes to the EVP and PKCS#7 code. It may now be able to
10215 handle PKCS#7 enveloped data properly.
10216 [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve]
10218 *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
10219 copying pointers. The cert_st handling is changed by this in
10220 various ways (and thus what used to be known as ctx->default_cert
10221 is now called ctx->cert, since we don't resort to s->ctx->[default_]cert
10222 any longer when s->cert does not give us what we need).
10223 ssl_cert_instantiate becomes obsolete by this change.
10224 As soon as we've got the new code right (possibly it already is?),
10225 we have solved a couple of bugs of the earlier code where s->cert
10226 was used as if it could not have been shared with other SSL structures.
10228 Note that using the SSL API in certain dirty ways now will result
10229 in different behaviour than observed with earlier library versions:
10230 Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx)
10231 does not influence s as it used to.
10233 In order to clean up things more thoroughly, inside SSL_SESSION
10234 we don't use CERT any longer, but a new structure SESS_CERT
10235 that holds per-session data (if available); currently, this is
10236 the peer's certificate chain and, for clients, the server's certificate
10237 and temporary key. CERT holds only those values that can have
10238 meaningful defaults in an SSL_CTX.
10241 *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
10242 from the internal representation. Various PKCS#7 fixes: remove some
10243 evil casts and set the enc_dig_alg field properly based on the signing
10247 *) Allow PKCS#12 password to be set from the command line or the
10248 environment. Let 'ca' get its config file name from the environment
10249 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
10253 *) Allow certificate policies extension to use an IA5STRING for the
10254 organization field. This is contrary to the PKIX definition but
10255 VeriSign uses it and IE5 only recognises this form. Document 'x509'
10259 *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
10260 without disallowing inline assembler and the like for non-pedantic builds.
10263 *) Support Borland C++ builder.
10264 [Janez Jere <jj@void.si>, modified by Ulf Möller]
10266 *) Support Mingw32.
10269 *) SHA-1 cleanups and performance enhancements.
10270 [Andy Polyakov <appro@fy.chalmers.se>]
10272 *) Sparc v8plus assembler for the bignum library.
10273 [Andy Polyakov <appro@fy.chalmers.se>]
10275 *) Accept any -xxx and +xxx compiler options in Configure.
10278 *) Update HPUX configuration.
10281 *) Add missing sk_<type>_unshift() function to safestack.h
10282 [Ralf S. Engelschall]
10284 *) New function SSL_CTX_use_certificate_chain_file that sets the
10285 "extra_cert"s in addition to the certificate. (This makes sense
10286 only for "PEM" format files, as chains as a whole are not
10290 *) Support verify_depth from the SSL API.
10291 x509_vfy.c had what can be considered an off-by-one-error:
10292 Its depth (which was not part of the external interface)
10293 was actually counting the number of certificates in a chain;
10294 now it really counts the depth.
10297 *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
10298 instead of X509err, which often resulted in confusing error
10299 messages since the error codes are not globally unique
10300 (e.g. an alleged error in ssl3_accept when a certificate
10301 didn't match the private key).
10303 *) New function SSL_CTX_set_session_id_context that allows to set a default
10304 value (so that you don't need SSL_set_session_id_context for each
10305 connection using the SSL_CTX).
10308 *) OAEP decoding bug fix.
10311 *) Support INSTALL_PREFIX for package builders, as proposed by
10315 *) New Configure options "threads" and "no-threads". For systems
10316 where the proper compiler options are known (currently Solaris
10317 and Linux), "threads" is the default.
10320 *) New script util/mklink.pl as a faster substitute for util/mklink.sh.
10323 *) Install various scripts to $(OPENSSLDIR)/misc, not to
10324 $(INSTALLTOP)/bin -- they shouldn't clutter directories
10325 such as /usr/local/bin.
10328 *) "make linux-shared" to build shared libraries.
10329 [Niels Poppe <niels@netbox.org>]
10331 *) New Configure option no-<cipher> (rsa, idea, rc5, ...).
10334 *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
10335 extension adding in x509 utility.
10338 *) Remove NOPROTO sections and error code comments.
10341 *) Partial rewrite of the DEF file generator to now parse the ANSI
10345 *) New Configure options --prefix=DIR and --openssldir=DIR.
10348 *) Complete rewrite of the error code script(s). It is all now handled
10349 by one script at the top level which handles error code gathering,
10350 header rewriting and C source file generation. It should be much better
10351 than the old method: it now uses a modified version of Ulf's parser to
10352 read the ANSI prototypes in all header files (thus the old K&R definitions
10353 aren't needed for error creation any more) and do a better job of
10354 translating function codes into names. The old 'ASN1 error code imbedded
10355 in a comment' is no longer necessary and it doesn't use .err files which
10356 have now been deleted. Also the error code call doesn't have to appear all
10357 on one line (which resulted in some large lines...).
10360 *) Change #include filenames from <foo.h> to <openssl/foo.h>.
10363 *) Change behaviour of ssl2_read when facing length-0 packets: Don't return
10364 0 (which usually indicates a closed connection), but continue reading.
10367 *) Fix some race conditions.
10370 *) Add support for CRL distribution points extension. Add Certificate
10371 Policies and CRL distribution points documentation.
10374 *) Move the autogenerated header file parts to crypto/opensslconf.h.
10377 *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
10378 8 of keying material. Merlin has also confirmed interop with this fix
10379 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
10380 [Merlin Hughes <merlin@baltimore.ie>]
10382 *) Fix lots of warnings.
10383 [Richard Levitte <levitte@stacken.kth.se>]
10385 *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
10386 the directory spec didn't end with a LIST_SEPARATOR_CHAR.
10387 [Richard Levitte <levitte@stacken.kth.se>]
10389 *) Fix problems with sizeof(long) == 8.
10390 [Andy Polyakov <appro@fy.chalmers.se>]
10392 *) Change functions to ANSI C.
10395 *) Fix typos in error codes.
10396 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller]
10398 *) Remove defunct assembler files from Configure.
10401 *) SPARC v8 assembler BIGNUM implementation.
10402 [Andy Polyakov <appro@fy.chalmers.se>]
10404 *) Support for Certificate Policies extension: both print and set.
10405 Various additions to support the r2i method this uses.
10408 *) A lot of constification, and fix a bug in X509_NAME_oneline() that could
10409 return a const string when you are expecting an allocated buffer.
10412 *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
10413 types DirectoryString and DisplayText.
10416 *) Add code to allow r2i extensions to access the configuration database,
10417 add an LHASH database driver and add several ctx helper functions.
10420 *) Fix an evil bug in bn_expand2() which caused various BN functions to
10421 fail when they extended the size of a BIGNUM.
10424 *) Various utility functions to handle SXNet extension. Modify mkdef.pl to
10425 support typesafe stack.
10428 *) Fix typo in SSL_[gs]et_options().
10429 [Nils Frostberg <nils@medcom.se>]
10431 *) Delete various functions and files that belonged to the (now obsolete)
10432 old X509V3 handling code.
10435 *) New Configure option "rsaref".
10438 *) Don't auto-generate pem.h.
10441 *) Introduce type-safe ASN.1 SETs.
10444 *) Convert various additional casted stacks to type-safe STACK_OF() variants.
10445 [Ben Laurie, Ralf S. Engelschall, Steve Henson]
10447 *) Introduce type-safe STACKs. This will almost certainly break lots of code
10448 that links with OpenSSL (well at least cause lots of warnings), but fear
10449 not: the conversion is trivial, and it eliminates loads of evil casts. A
10450 few STACKed things have been converted already. Feel free to convert more.
10451 In the fullness of time, I'll do away with the STACK type altogether.
10454 *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate
10455 specified in <certfile> by updating the entry in the index.txt file.
10456 This way one no longer has to edit the index.txt file manually for
10457 revoking a certificate. The -revoke option does the gory details now.
10458 [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall]
10460 *) Fix `openssl crl -noout -text' combination where `-noout' killed the
10461 `-text' option at all and this way the `-noout -text' combination was
10462 inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'.
10463 [Ralf S. Engelschall]
10465 *) Make sure a corresponding plain text error message exists for the
10466 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
10467 verify callback function determined that a certificate was revoked.
10468 [Ralf S. Engelschall]
10470 *) Bugfix: In test/testenc, don't test "openssl <cipher>" for
10471 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test
10472 all available cipers including rc5, which was forgotten until now.
10473 In order to let the testing shell script know which algorithms
10474 are available, a new (up to now undocumented) command
10475 "openssl list-cipher-commands" is used.
10478 *) Bugfix: s_client occasionally would sleep in select() when
10479 it should have checked SSL_pending() first.
10482 *) New functions DSA_do_sign and DSA_do_verify to provide access to
10483 the raw DSA values prior to ASN.1 encoding.
10486 *) Tweaks to Configure
10487 [Niels Poppe <niels@netbox.org>]
10489 *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
10493 *) New variables $(RANLIB) and $(PERL) in the Makefiles.
10496 *) New config option to avoid instructions that are illegal on the 80386.
10497 The default code is faster, but requires at least a 486.
10500 *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
10501 SSL2_SERVER_VERSION (not used at all) macros, which are now the
10502 same as SSL2_VERSION anyway.
10505 *) New "-showcerts" option for s_client.
10508 *) Still more PKCS#12 integration. Add pkcs12 application to openssl
10509 application. Various cleanups and fixes.
10512 *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
10513 modify error routines to work internally. Add error codes and PBE init
10514 to library startup routines.
10517 *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and
10518 packing functions to asn1 and evp. Changed function names and error
10519 codes along the way.
10522 *) PKCS12 integration: and so it begins... First of several patches to
10523 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
10524 objects to objects.h
10527 *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1
10528 and display support for Thawte strong extranet extension.
10531 *) Add LinuxPPC support.
10532 [Jeff Dubrule <igor@pobox.org>]
10534 *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
10535 bn_div_words in alpha.s.
10536 [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie]
10538 *) Make sure the RSA OAEP test is skipped under -DRSAref because
10539 OAEP isn't supported when OpenSSL is built with RSAref.
10540 [Ulf Moeller <ulf@fitug.de>]
10542 *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
10543 so they no longer are missing under -DNOPROTO.
10544 [Soren S. Jorvang <soren@t.dk>]
10547 Changes between 0.9.1c and 0.9.2b [22 Mar 1999]
10549 *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
10550 doesn't work when the session is reused. Coming soon!
10553 *) Fix a security hole, that allows sessions to be reused in the wrong
10554 context thus bypassing client cert protection! All software that uses
10555 client certs and session caches in multiple contexts NEEDS PATCHING to
10556 allow session reuse! A fuller solution is in the works.
10557 [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)]
10559 *) Some more source tree cleanups (removed obsolete files
10560 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
10561 permission on "config" script to be executable) and a fix for the INSTALL
10563 [Ulf Moeller <ulf@fitug.de>]
10565 *) Remove some legacy and erroneous uses of malloc, free instead of
10567 [Lennart Bang <lob@netstream.se>, with minor changes by Steve]
10569 *) Make rsa_oaep_test return non-zero on error.
10570 [Ulf Moeller <ulf@fitug.de>]
10572 *) Add support for native Solaris shared libraries. Configure
10573 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
10574 if someone would make that last step automatic.
10575 [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>]
10577 *) ctx_size was not built with the right compiler during "make links". Fixed.
10580 *) Change the meaning of 'ALL' in the cipher list. It now means "everything
10581 except NULL ciphers". This means the default cipher list will no longer
10582 enable NULL ciphers. They need to be specifically enabled e.g. with
10583 the string "DEFAULT:eNULL".
10586 *) Fix to RSA private encryption routines: if p < q then it would
10587 occasionally produce an invalid result. This will only happen with
10588 externally generated keys because OpenSSL (and SSLeay) ensure p > q.
10591 *) Be less restrictive and allow also `perl util/perlpath.pl
10592 /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin',
10593 because this way one can also use an interpreter named `perl5' (which is
10594 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
10595 installed as `perl').
10596 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
10598 *) Let util/clean-depend.pl work also with older Perl 5.00x versions.
10599 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
10601 *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
10602 advapi32.lib to Win32 build and change the pem test comparison
10603 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
10604 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
10605 and crypto/des/ede_cbcm_enc.c.
10608 *) DES quad checksum was broken on big-endian architectures. Fixed.
10611 *) Comment out two functions in bio.h that aren't implemented. Fix up the
10612 Win32 test batch file so it (might) work again. The Win32 test batch file
10613 is horrible: I feel ill....
10616 *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
10617 in e_os.h. Audit of header files to check ANSI and non ANSI
10618 sections: 10 functions were absent from non ANSI section and not exported
10619 from Windows DLLs. Fixed up libeay.num for new functions.
10622 *) Make `openssl version' output lines consistent.
10623 [Ralf S. Engelschall]
10625 *) Fix Win32 symbol export lists for BIO functions: Added
10626 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
10627 to ms/libeay{16,32}.def.
10628 [Ralf S. Engelschall]
10630 *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
10631 fine under Unix and passes some trivial tests I've now added. But the
10632 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
10633 added to make sure no one expects that this stuff really works in the
10634 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources
10635 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
10637 [Ralf S. Engelschall]
10639 *) Fix the generation of two part addresses in perl.
10640 [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie]
10642 *) Add config entry for Linux on MIPS.
10643 [John Tobey <jtobey@channel1.com>]
10645 *) Make links whenever Configure is run, unless we are on Windoze.
10648 *) Permit extensions to be added to CRLs using crl_section in openssl.cnf.
10649 Currently only issuerAltName and AuthorityKeyIdentifier make any sense
10653 *) Add a useful kludge to allow package maintainers to specify compiler and
10654 other platforms details on the command line without having to patch the
10655 Configure script everytime: One now can use ``perl Configure
10656 <id>:<details>'', i.e. platform ids are allowed to have details appended
10657 to them (separated by colons). This is treated as there would be a static
10658 pre-configured entry in Configure's %table under key <id> with value
10659 <details> and ``perl Configure <id>'' is called. So, when you want to
10660 perform a quick test-compile under FreeBSD 3.1 with pgcc and without
10661 assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"''
10662 now, which overrides the FreeBSD-elf entry on-the-fly.
10663 [Ralf S. Engelschall]
10665 *) Disable new TLS1 ciphersuites by default: they aren't official yet.
10668 *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
10669 on the `perl Configure ...' command line. This way one can compile
10670 OpenSSL libraries with Position Independent Code (PIC) which is needed
10671 for linking it into DSOs.
10672 [Ralf S. Engelschall]
10674 *) Remarkably, export ciphers were totally broken and no-one had noticed!
10678 *) Cleaned up the LICENSE document: The official contact for any license
10679 questions now is the OpenSSL core team under openssl-core@openssl.org.
10680 And add a paragraph about the dual-license situation to make sure people
10681 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
10682 to the OpenSSL toolkit.
10683 [Ralf S. Engelschall]
10685 *) General source tree makefile cleanups: Made `making xxx in yyy...'
10686 display consistent in the source tree and replaced `/bin/rm' by `rm'.
10687 Additionally cleaned up the `make links' target: Remove unnecessary
10688 semicolons, subsequent redundant removes, inline point.sh into mklink.sh
10689 to speed processing and no longer clutter the display with confusing
10690 stuff. Instead only the actually done links are displayed.
10691 [Ralf S. Engelschall]
10693 *) Permit null encryption ciphersuites, used for authentication only. It used
10694 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
10695 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
10699 *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
10700 signed attributes when verifying signatures (this would break them),
10701 the detached data encoding was wrong and public keys obtained using
10702 X509_get_pubkey() weren't freed.
10705 *) Add text documentation for the BUFFER functions. Also added a work around
10706 to a Win95 console bug. This was triggered by the password read stuff: the
10707 last character typed gets carried over to the next fread(). If you were
10708 generating a new cert request using 'req' for example then the last
10709 character of the passphrase would be CR which would then enter the first
10713 *) Added the new `Includes OpenSSL Cryptography Software' button as
10714 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
10715 button and can be used by applications based on OpenSSL to show the
10716 relationship to the OpenSSL project.
10717 [Ralf S. Engelschall]
10719 *) Remove confusing variables in function signatures in files
10720 ssl/ssl_lib.c and ssl/ssl.h.
10721 [Lennart Bong <lob@kulthea.stacken.kth.se>]
10723 *) Don't install bss_file.c under PREFIX/include/
10724 [Lennart Bong <lob@kulthea.stacken.kth.se>]
10726 *) Get the Win32 compile working again. Modify mkdef.pl so it can handle
10727 functions that return function pointers and has support for NT specific
10728 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
10729 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
10730 unsigned to signed types: this was killing the Win32 compile.
10733 *) Add new certificate file to stack functions,
10734 SSL_add_dir_cert_subjects_to_stack() and
10735 SSL_add_file_cert_subjects_to_stack(). These largely supplant
10736 SSL_load_client_CA_file(), and can be used to add multiple certs easily
10737 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
10738 This means that Apache-SSL and similar packages don't have to mess around
10739 to add as many CAs as they want to the preferred list.
10742 *) Experiment with doxygen documentation. Currently only partially applied to
10744 See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with
10745 openssl.doxy as the configuration file.
10748 *) Get rid of remaining C++-style comments which strict C compilers hate.
10749 [Ralf S. Engelschall, pointed out by Carlos Amengual]
10751 *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
10752 compiled in by default: it has problems with large keys.
10755 *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
10756 DH private keys and/or callback functions which directly correspond to
10757 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
10758 is needed for applications which have to configure certificates on a
10759 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
10761 For the RSA certificate situation is makes no difference, but
10762 for the DSA certificate situation this fixes the "no shared cipher"
10763 problem where the OpenSSL cipher selection procedure failed because the
10764 temporary keys were not overtaken from the context and the API provided
10765 no way to reconfigure them.
10766 The new functions now let applications reconfigure the stuff and they
10767 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
10768 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new
10769 non-public-API function ssl_cert_instantiate() is used as a helper
10770 function and also to reduce code redundancy inside ssl_rsa.c.
10771 [Ralf S. Engelschall]
10773 *) Move s_server -dcert and -dkey options out of the undocumented feature
10774 area because they are useful for the DSA situation and should be
10775 recognized by the users.
10776 [Ralf S. Engelschall]
10778 *) Fix the cipher decision scheme for export ciphers: the export bits are
10779 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
10780 SSL_EXP_MASK. So, the original variable has to be used instead of the
10781 already masked variable.
10782 [Richard Levitte <levitte@stacken.kth.se>]
10784 *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c
10785 [Richard Levitte <levitte@stacken.kth.se>]
10787 *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
10788 from `int' to `unsigned int' because it's a length and initialized by
10789 EVP_DigestFinal() which expects an `unsigned int *'.
10790 [Richard Levitte <levitte@stacken.kth.se>]
10792 *) Don't hard-code path to Perl interpreter on shebang line of Configure
10793 script. Instead use the usual Shell->Perl transition trick.
10794 [Ralf S. Engelschall]
10796 *) Make `openssl x509 -noout -modulus' functional also for DSA certificates
10797 (in addition to RSA certificates) to match the behaviour of `openssl dsa
10798 -noout -modulus' as it's already the case for `openssl rsa -noout
10799 -modulus'. For RSA the -modulus is the real "modulus" while for DSA
10800 currently the public key is printed (a decision which was already done by
10801 `openssl dsa -modulus' in the past) which serves a similar purpose.
10802 Additionally the NO_RSA no longer completely removes the whole -modulus
10803 option; it now only avoids using the RSA stuff. Same applies to NO_DSA
10805 [Ralf S. Engelschall]
10807 *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
10808 BIO. See the source (crypto/evp/bio_ok.c) for more info.
10809 [Arne Ansper <arne@ats.cyber.ee>]
10811 *) Dump the old yucky req code that tried (and failed) to allow raw OIDs
10812 to be added. Now both 'req' and 'ca' can use new objects defined in the
10816 *) Add cool BIO that does syslog (or event log on NT).
10817 [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie]
10819 *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
10820 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
10821 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
10822 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
10825 *) Add preliminary config info for new extension code.
10828 *) Make RSA_NO_PADDING really use no padding.
10829 [Ulf Moeller <ulf@fitug.de>]
10831 *) Generate errors when private/public key check is done.
10834 *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
10835 for some CRL extensions and new objects added.
10838 *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private
10839 key usage extension and fuller support for authority key id.
10842 *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
10843 padding method for RSA, which is recommended for new applications in PKCS
10844 #1 v2.0 (RFC 2437, October 1998).
10845 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
10846 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
10847 against Bleichbacher's attack on RSA.
10848 [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
10851 *) Updates to the new SSL compression code
10852 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
10854 *) Fix so that the version number in the master secret, when passed
10855 via RSA, checks that if TLS was proposed, but we roll back to SSLv3
10856 (because the server will not accept higher), that the version number
10857 is 0x03,0x01, not 0x03,0x00
10858 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
10860 *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
10861 leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
10862 in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
10865 *) Support for RAW extensions where an arbitrary extension can be
10866 created by including its DER encoding. See apps/openssl.cnf for
10870 *) Make sure latest Perl versions don't interpret some generated C array
10871 code as Perl array code in the crypto/err/err_genc.pl script.
10872 [Lars Weber <3weber@informatik.uni-hamburg.de>]
10874 *) Modify ms/do_ms.bat to not generate assembly language makefiles since
10875 not many people have the assembler. Various Win32 compilation fixes and
10876 update to the INSTALL.W32 file with (hopefully) more accurate Win32
10877 build instructions.
10880 *) Modify configure script 'Configure' to automatically create crypto/date.h
10881 file under Win32 and also build pem.h from pem.org. New script
10882 util/mkfiles.pl to create the MINFO file on environments that can't do a
10883 'make files': perl util/mkfiles.pl >MINFO should work.
10886 *) Major rework of DES function declarations, in the pursuit of correctness
10887 and purity. As a result, many evil casts evaporated, and some weirdness,
10888 too. You may find this causes warnings in your code. Zapping your evil
10889 casts will probably fix them. Mostly.
10892 *) Fix for a typo in asn1.h. Bug fix to object creation script
10893 obj_dat.pl. It considered a zero in an object definition to mean
10894 "end of object": none of the objects in objects.h have any zeros
10895 so it wasn't spotted.
10896 [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>]
10898 *) Add support for Triple DES Cipher Block Chaining with Output Feedback
10899 Masking (CBCM). In the absence of test vectors, the best I have been able
10900 to do is check that the decrypt undoes the encrypt, so far. Send me test
10901 vectors if you have them.
10904 *) Correct calculation of key length for export ciphers (too much space was
10905 allocated for null ciphers). This has not been tested!
10908 *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage
10909 message is now correct (it understands "crypto" and "ssl" on its
10910 command line). There is also now an "update" option. This will update
10911 the util/ssleay.num and util/libeay.num files with any new functions.
10913 perl util/mkdef.pl crypto ssl update
10914 it will update them.
10917 *) Overhauled the Perl interface (perl/*):
10918 - ported BN stuff to OpenSSL's different BN library
10919 - made the perl/ source tree CVS-aware
10920 - renamed the package from SSLeay to OpenSSL (the files still contain
10921 their history because I've copied them in the repository)
10922 - removed obsolete files (the test scripts will be replaced
10923 by better Test::Harness variants in the future)
10924 [Ralf S. Engelschall]
10926 *) First cut for a very conservative source tree cleanup:
10927 1. merge various obsolete readme texts into doc/ssleay.txt
10928 where we collect the old documents and readme texts.
10929 2. remove the first part of files where I'm already sure that we no
10930 longer need them because of three reasons: either they are just temporary
10931 files which were left by Eric or they are preserved original files where
10932 I've verified that the diff is also available in the CVS via "cvs diff
10933 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
10934 the crypto/md/ stuff).
10935 [Ralf S. Engelschall]
10937 *) More extension code. Incomplete support for subject and issuer alt
10938 name, issuer and authority key id. Change the i2v function parameters
10939 and add an extra 'crl' parameter in the X509V3_CTX structure: guess
10940 what that's for :-) Fix to ASN1 macro which messed up
10941 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
10944 *) Preliminary support for ENUMERATED type. This is largely copied from the
10948 *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
10949 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
10951 *) Make sure `make rehash' target really finds the `openssl' program.
10952 [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
10954 *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
10955 like to hear about it if this slows down other processors.
10958 *) Add CygWin32 platform information to Configure script.
10959 [Alan Batie <batie@aahz.jf.intel.com>]
10961 *) Fixed ms/32all.bat script: `no_asm' -> `no-asm'
10962 [Rainer W. Gerling <gerling@mpg-gv.mpg.de>]
10964 *) New program nseq to manipulate netscape certificate sequences
10967 *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
10971 *) Fixes to BN code. Previously the default was to define BN_RECURSION
10972 but the BN code had some problems that would cause failures when
10973 doing certificate verification and some other functions.
10974 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
10976 *) Add ASN1 and PEM code to support netscape certificate sequences.
10979 *) Add ASN1 and PEM code to support netscape certificate sequences.
10982 *) Add several PKIX and private extended key usage OIDs.
10985 *) Modify the 'ca' program to handle the new extension code. Modify
10986 openssl.cnf for new extension format, add comments.
10989 *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
10990 and add a sample to openssl.cnf so req -x509 now adds appropriate
10994 *) Continued X509 V3 changes. Add to other makefiles, integrate with the
10995 error code, add initial support to X509_print() and x509 application.
10998 *) Takes a deep breath and start adding X509 V3 extension support code. Add
10999 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
11000 stuff is currently isolated and isn't even compiled yet.
11003 *) Continuing patches for GeneralizedTime. Fix up certificate and CRL
11004 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
11005 Removed the versions check from X509 routines when loading extensions:
11006 this allows certain broken certificates that don't set the version
11007 properly to be processed.
11010 *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
11011 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
11012 can still be regenerated with "make depend".
11015 *) Spelling mistake in C version of CAST-128.
11016 [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>]
11018 *) Changes to the error generation code. The perl script err-code.pl
11019 now reads in the old error codes and retains the old numbers, only
11020 adding new ones if necessary. It also only changes the .err files if new
11021 codes are added. The makefiles have been modified to only insert errors
11022 when needed (to avoid needlessly modifying header files). This is done
11023 by only inserting errors if the .err file is newer than the auto generated
11024 C file. To rebuild all the error codes from scratch (the old behaviour)
11025 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
11026 or delete all the .err files.
11029 *) CAST-128 was incorrectly implemented for short keys. The C version has
11030 been fixed, but is untested. The assembler versions are also fixed, but
11031 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
11032 to regenerate it if needed.
11033 [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
11034 Hagino <itojun@kame.net>]
11036 *) File was opened incorrectly in randfile.c.
11037 [Ulf Möller <ulf@fitug.de>]
11039 *) Beginning of support for GeneralizedTime. d2i, i2d, check and print
11040 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
11041 GeneralizedTime. ASN1_TIME is the proper type used in certificates et
11042 al: it's just almost always a UTCTime. Note this patch adds new error
11043 codes so do a "make errors" if there are problems.
11046 *) Correct Linux 1 recognition in config.
11047 [Ulf Möller <ulf@fitug.de>]
11049 *) Remove pointless MD5 hash when using DSA keys in ca.
11050 [Anonymous <nobody@replay.com>]
11052 *) Generate an error if given an empty string as a cert directory. Also
11053 generate an error if handed NULL (previously returned 0 to indicate an
11054 error, but didn't set one).
11055 [Ben Laurie, reported by Anonymous <nobody@replay.com>]
11057 *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
11060 *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
11061 parameters. This was causing a warning which killed off the Win32 compile.
11064 *) Remove C++ style comments from crypto/bn/bn_local.h.
11065 [Neil Costigan <neil.costigan@celocom.com>]
11067 *) The function OBJ_txt2nid was broken. It was supposed to return a nid
11068 based on a text string, looking up short and long names and finally
11069 "dot" format. The "dot" format stuff didn't work. Added new function
11070 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
11071 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
11072 OID is not part of the table.
11075 *) Add prototypes to X509 lookup/verify methods, fixing a bug in
11076 X509_LOOKUP_by_alias().
11079 *) Sort openssl functions by name.
11082 *) Get the gendsa program working (hopefully) and add it to app list. Remove
11083 encryption from sample DSA keys (in case anyone is interested the password
11087 *) Make _all_ *_free functions accept a NULL pointer.
11088 [Frans Heymans <fheymans@isaserver.be>]
11090 *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use
11092 [Anonymous <nobody@replay.com>]
11094 *) s_server should send the CAfile as acceptable CAs, not its own cert.
11095 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
11097 *) Don't blow it for numeric -newkey arguments to apps/req.
11098 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
11100 *) Temp key "for export" tests were wrong in s3_srvr.c.
11101 [Anonymous <nobody@replay.com>]
11103 *) Add prototype for temp key callback functions
11104 SSL_CTX_set_tmp_{rsa,dh}_callback().
11107 *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
11108 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
11111 *) X509_name_add_entry() freed the wrong thing after an error.
11112 [Arne Ansper <arne@ats.cyber.ee>]
11114 *) rsa_eay.c would attempt to free a NULL context.
11115 [Arne Ansper <arne@ats.cyber.ee>]
11117 *) BIO_s_socket() had a broken should_retry() on Windoze.
11118 [Arne Ansper <arne@ats.cyber.ee>]
11120 *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
11121 [Arne Ansper <arne@ats.cyber.ee>]
11123 *) Make sure the already existing X509_STORE->depth variable is initialized
11124 in X509_STORE_new(), but document the fact that this variable is still
11125 unused in the certificate verification process.
11126 [Ralf S. Engelschall]
11128 *) Fix the various library and apps files to free up pkeys obtained from
11129 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
11132 *) Fix reference counting in X509_PUBKEY_get(). This makes
11133 demos/maurice/example2.c work, amongst others, probably.
11134 [Steve Henson and Ben Laurie]
11136 *) First cut of a cleanup for apps/. First the `ssleay' program is now named
11137 `openssl' and second, the shortcut symlinks for the `openssl <command>'
11138 are no longer created. This way we have a single and consistent command
11139 line interface `openssl <command>', similar to `cvs <command>'.
11140 [Ralf S. Engelschall, Paul Sutton and Ben Laurie]
11142 *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
11143 BIT STRING wrapper always have zero unused bits.
11146 *) Add CA.pl, perl version of CA.sh, add extended key usage OID.
11149 *) Make the top-level INSTALL documentation easier to understand.
11152 *) Makefiles updated to exit if an error occurs in a sub-directory
11153 make (including if user presses ^C) [Paul Sutton]
11155 *) Make Montgomery context stuff explicit in RSA data structure.
11158 *) Fix build order of pem and err to allow for generated pem.h.
11161 *) Fix renumbering bug in X509_NAME_delete_entry().
11164 *) Enhanced the err-ins.pl script so it makes the error library number
11165 global and can add a library name. This is needed for external ASN1 and
11166 other error libraries.
11169 *) Fixed sk_insert which never worked properly.
11172 *) Fix ASN1 macros so they can handle indefinite length constructed
11173 EXPLICIT tags. Some non standard certificates use these: they can now
11177 *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
11178 into a single doc/ssleay.txt bundle. This way the information is still
11179 preserved but no longer messes up this directory. Now it's new room for
11180 the new set of documentation files.
11181 [Ralf S. Engelschall]
11183 *) SETs were incorrectly DER encoded. This was a major pain, because they
11184 shared code with SEQUENCEs, which aren't coded the same. This means that
11185 almost everything to do with SETs or SEQUENCEs has either changed name or
11186 number of arguments.
11187 [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>]
11189 *) Fix test data to work with the above.
11192 *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
11193 was already fixed by Eric for 0.9.1 it seems.
11194 [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>]
11196 *) Autodetect FreeBSD3.
11199 *) Fix various bugs in Configure. This affects the following platforms:
11203 unixware-2.0-pentium
11207 *) Eliminate generated files from CVS. Reorder tests to regenerate files
11208 before they are needed.
11211 *) Generate Makefile.ssl from Makefile.org (to keep CVS happy).
11215 Changes between 0.9.1b and 0.9.1c [23-Dec-1998]
11217 *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
11218 changed SSLeay to OpenSSL in version strings.
11219 [Ralf S. Engelschall]
11221 *) Some fixups to the top-level documents.
11224 *) Fixed the nasty bug where rsaref.h was not found under compile-time
11225 because the symlink to include/ was missing.
11226 [Ralf S. Engelschall]
11228 *) Incorporated the popular no-RSA/DSA-only patches
11229 which allow to compile a RSA-free SSLeay.
11230 [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall]
11232 *) Fixed nasty rehash problem under `make -f Makefile.ssl links'
11233 when "ssleay" is still not found.
11234 [Ralf S. Engelschall]
11236 *) Added more platforms to Configure: Cray T3E, HPUX 11,
11237 [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>]
11239 *) Updated the README file.
11240 [Ralf S. Engelschall]
11242 *) Added various .cvsignore files in the CVS repository subdirs
11243 to make a "cvs update" really silent.
11244 [Ralf S. Engelschall]
11246 *) Recompiled the error-definition header files and added
11247 missing symbols to the Win32 linker tables.
11248 [Ralf S. Engelschall]
11250 *) Cleaned up the top-level documents;
11251 o new files: CHANGES and LICENSE
11252 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
11253 o merged COPYRIGHT into LICENSE
11254 o removed obsolete TODO file
11255 o renamed MICROSOFT to INSTALL.W32
11256 [Ralf S. Engelschall]
11258 *) Removed dummy files from the 0.9.1b source tree:
11259 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
11260 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
11261 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
11262 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
11263 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
11264 [Ralf S. Engelschall]
11266 *) Added various platform portability fixes.
11269 *) The Genesis of the OpenSSL rpject:
11270 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
11271 Young and Tim J. Hudson created while they were working for C2Net until
11273 [The OpenSSL Project]
11276 Changes between 0.9.0b and 0.9.1b [not released]
11278 *) Updated a few CA certificates under certs/
11281 *) Changed some BIGNUM api stuff.
11284 *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
11285 DGUX x86, Linux Alpha, etc.
11288 *) New COMP library [crypto/comp/] for SSL Record Layer Compression:
11289 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
11293 *) Add -strparse option to asn1pars program which parses nested
11295 [Dr Stephen Henson <shenson@bigfoot.com>]
11297 *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
11300 *) DSA fix for "ca" program.
11303 *) Added "-genkey" option to "dsaparam" program.
11306 *) Added RIPE MD160 (rmd160) message digest.
11309 *) Added -a (all) option to "ssleay version" command.
11312 *) Added PLATFORM define which is the id given to Configure.
11315 *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
11318 *) Extended the ASN.1 parser routines.
11321 *) Extended BIO routines to support REUSEADDR, seek, tell, etc.
11324 *) Added a BN_CTX to the BN library.
11327 *) Fixed the weak key values in DES library
11330 *) Changed API in EVP library for cipher aliases.
11333 *) Added support for RC2/64bit cipher.
11336 *) Converted the lhash library to the crypto/mem.c functions.
11339 *) Added more recognized ASN.1 object ids.
11342 *) Added more RSA padding checks for SSL/TLS.
11345 *) Added BIO proxy/filter functionality.
11348 *) Added extra_certs to SSL_CTX which can be used
11349 send extra CA certificates to the client in the CA cert chain sending
11350 process. It can be configured with SSL_CTX_add_extra_chain_cert().
11353 *) Now Fortezza is denied in the authentication phase because
11354 this is key exchange mechanism is not supported by SSLeay at all.
11357 *) Additional PKCS1 checks.
11360 *) Support the string "TLSv1" for all TLS v1 ciphers.
11363 *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
11364 ex_data index of the SSL context in the X509_STORE_CTX ex_data.
11367 *) Fixed a few memory leaks.
11370 *) Fixed various code and comment typos.
11373 *) A minor bug in ssl/s3_clnt.c where there would always be 4 0
11374 bytes sent in the client random.
11375 [Edward Bishop <ebishop@spyglass.com>]