5 Changes between 1.0.2 and 1.1.0 [xx XXX xxxx]
7 *) Removed obsolete engines: 4758cca, aep, atalla, cswift, nuron and sureware.
10 *) New ASN.1 embed macro.
12 New ASN.1 macro ASN1_EMBED. This is the same as ASN1_SIMPLE except the
13 structure is not allocated: it is part of the parent. That is instead of
21 This reduces memory fragmentation and make it impossible to accidentally
22 set a mandatory field to NULL.
24 This currently only works for some fields specifically a SEQUENCE, CHOICE,
25 or ASN1_STRING type which is part of a parent SEQUENCE. Since it is
26 equivalent to ASN1_SIMPLE it cannot be tagged, OPTIONAL, SET OF or
30 *) Remove EVP_CHECK_DES_KEY, a compile-time option that never compiled.
33 *) Removed DES and RC4 ciphersuites from DEFAULT. Also removed RC2 although
34 in 1.0.2 EXPORT was already removed and the only RC2 ciphersuite is also
35 an EXPORT one. COMPLEMENTOFDEFAULT has been updated accordingly to add
36 DES and RC4 ciphersuites.
39 *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
40 This changes the decoding behaviour for some invalid messages,
41 though the change is mostly in the more lenient direction, and
42 legacy behaviour is preserved as much as possible.
44 *) Fix no-stdio build.
45 [ David Woodhouse <David.Woodhouse@intel.com> and also
46 Ivan Nestlerode <ivan.nestlerode@sonos.com> ]
47 *) New testing framework
48 The testing framework has been largely rewritten and is now using
49 perl and the perl modules Test::Harness and an extended variant of
50 Test::More called OpenSSL::Test to do its work. All test scripts in
51 test/ have been rewritten into test recipes, and all direct calls to
52 executables in test/Makefile have become individual recipes using the
53 simplified testing OpenSSL::Test::Simple.
55 For documentation on our testing modules, do:
57 perldoc test/testlib/OpenSSL/Test/Simple.pm
58 perldoc test/testlib/OpenSSL/Test.pm
62 *) In DSA_generate_parameters_ex, if the provided seed is too short,
64 [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>]
66 *) Rewrite PSK to support ECDHE_PSK, DHE_PSK and RSA_PSK. Add ciphersuites
67 from RFC4279, RFC4785, RFC5487, RFC5489.
69 Thanks to Christian J. Dietrich and Giuseppe D'Angelo for the
70 original RSA_PSK patch.
73 *) Dropped support for the SSL3_FLAGS_DELAY_CLIENT_FINISHED flag. This SSLeay
74 era flag was never set throughout the codebase (only read). Also removed
75 SSL3_FLAGS_POP_BUFFER which was only used if
76 SSL3_FLAGS_DELAY_CLIENT_FINISHED was also set.
79 *) Changed the default name options in the "ca", "crl", "req" and "x509"
80 to be "oneline" instead of "compat".
83 *) Remove SSL_OP_TLS_BLOCK_PADDING_BUG. This is SSLeay legacy, we're
84 not aware of clients that still exhibit this bug, and the workaround
85 hasn't been working properly for a while.
88 *) The return type of BIO_number_read() and BIO_number_written() as well as
89 the corresponding num_read and num_write members in the BIO structure has
90 changed from unsigned long to uint64_t. On platforms where an unsigned
91 long is 32 bits (e.g. Windows) these counters could overflow if >4Gb is
95 *) Given the pervasive nature of TLS extensions it is inadvisable to run
96 OpenSSL without support for them. It also means that maintaining
97 the OPENSSL_NO_TLSEXT option within the code is very invasive (and probably
98 not well tested). Therefore the OPENSSL_NO_TLSEXT option has been removed.
101 *) Removed support for the two export grade static DH ciphersuites
102 EXP-DH-RSA-DES-CBC-SHA and EXP-DH-DSS-DES-CBC-SHA. These two ciphersuites
103 were newly added (along with a number of other static DH ciphersuites) to
104 1.0.2. However the two export ones have *never* worked since they were
105 introduced. It seems strange in any case to be adding new export
106 ciphersuites, and given "logjam" it also does not seem correct to fix them.
109 *) Version negotiation has been rewritten. In particular SSLv23_method(),
110 SSLv23_client_method() and SSLv23_server_method() have been deprecated,
111 and turned into macros which simply call the new preferred function names
112 TLS_method(), TLS_client_method() and TLS_server_method(). All new code
113 should use the new names instead. Also as part of this change the ssl23.h
114 header file has been removed.
117 *) Support for Kerberos ciphersuites in TLS (RFC2712) has been removed. This
118 code and the associated standard is no longer considered fit-for-purpose.
121 *) RT2547 was closed. When generating a private key, try to make the
122 output file readable only by the owner. This behavior change might
123 be noticeable when interacting with other software.
125 *) Added HTTP GET support to the ocsp command.
128 *) RAND_pseudo_bytes has been deprecated. Users should use RAND_bytes instead.
131 *) Added support for TLS extended master secret from
132 draft-ietf-tls-session-hash-03.txt. Thanks for Alfredo Pironti for an
133 initial patch which was a great help during development.
136 *) All libssl internal structures have been removed from the public header
137 files, and the OPENSSL_NO_SSL_INTERN option has been removed (since it is
138 now redundant). Users should not attempt to access internal structures
139 directly. Instead they should use the provided API functions.
142 *) config has been changed so that by default OPENSSL_NO_DEPRECATED is used.
143 Access to deprecated functions can be re-enabled by running config with
144 "enable-deprecated". In addition applications wishing to use deprecated
145 functions must define OPENSSL_USE_DEPRECATED. Note that this new behaviour
146 will, by default, disable some transitive includes that previously existed
147 in the header files (e.g. ec.h will no longer, by default, include bn.h)
150 *) Added support for OCB mode. OpenSSL has been granted a patent license
151 compatible with the OpenSSL license for use of OCB. Details are available
152 at https://www.openssl.org/docs/misc/OCB-patent-grant-OpenSSL.pdf. Support
153 for OCB can be removed by calling config with no-ocb.
156 *) SSLv2 support has been removed. It still supports receiving a SSLv2
157 compatible client hello.
160 *) Increased the minimal RSA keysize from 256 to 512 bits [Rich Salz],
161 done while fixing the error code for the key-too-small case.
162 [Annie Yousar <a.yousar@informatik.hu-berlin.de>]
164 *) CA.sh has been removmed; use CA.pl instead.
167 *) Removed old DES API.
170 *) Remove various unsupported platforms:
176 Sinix/ReliantUNIX RM400
181 16-bit platforms such as WIN16
184 *) Clean up OPENSSL_NO_xxx #define's
185 Use setbuf() and remove OPENSSL_NO_SETVBUF_IONBF
186 Rename OPENSSL_SYSNAME_xxx to OPENSSL_SYS_xxx
187 OPENSSL_NO_EC{DH,DSA} merged into OPENSSL_NO_EC
188 OPENSSL_NO_RIPEMD160, OPENSSL_NO_RIPEMD merged into OPENSSL_NO_RMD160
189 OPENSSL_NO_FP_API merged into OPENSSL_NO_STDIO
190 Remove OPENSSL_NO_BIO OPENSSL_NO_BUFFER OPENSSL_NO_CHAIN_VERIFY
191 OPENSSL_NO_EVP OPENSSL_NO_FIPS_ERR OPENSSL_NO_HASH_COMP
192 OPENSSL_NO_LHASH OPENSSL_NO_OBJECT OPENSSL_NO_SPEED OPENSSL_NO_STACK
193 OPENSSL_NO_X509 OPENSSL_NO_X509_VERIFY
194 Remove MS_STATIC; it's a relic from platforms <32 bits.
197 *) Cleaned up dead code
198 Remove all but one '#ifdef undef' which is to be looked at.
201 *) Clean up calling of xxx_free routines.
202 Just like free(), fix most of the xxx_free routines to accept
203 NULL. Remove the non-null checks from callers. Save much code.
206 *) Add secure heap for storage of private keys (when possible).
207 Add BIO_s_secmem(), CBIGNUM, etc.
208 Contributed by Akamai Technologies under our Corporate CLA.
211 *) Experimental support for a new, fast, unbiased prime candidate generator,
212 bn_probable_prime_dh_coprime(). Not currently used by any prime generator.
213 [Felix Laurie von Massenbach <felix@erbridge.co.uk>]
215 *) New output format NSS in the sess_id command line tool. This allows
216 exporting the session id and the master key in NSS keylog format.
217 [Martin Kaiser <martin@kaiser.cx>]
219 *) Harmonize version and its documentation. -f flag is used to display
221 [mancha <mancha1@zoho.com>]
223 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
224 in i2d_ECPrivateKey. Thanks to Ted Unangst for feedback on this issue.
225 [mancha <mancha1@zoho.com>]
227 *) Fix some double frees. These are not thought to be exploitable.
228 [mancha <mancha1@zoho.com>]
230 *) A missing bounds check in the handling of the TLS heartbeat extension
231 can be used to reveal up to 64k of memory to a connected client or
234 Thanks for Neel Mehta of Google Security for discovering this bug and to
235 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
236 preparing the fix (CVE-2014-0160)
237 [Adam Langley, Bodo Moeller]
239 *) Fix for the attack described in the paper "Recovering OpenSSL
240 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
241 by Yuval Yarom and Naomi Benger. Details can be obtained from:
242 http://eprint.iacr.org/2014/140
244 Thanks to Yuval Yarom and Naomi Benger for discovering this
245 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
246 [Yuval Yarom and Naomi Benger]
248 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
249 this fixes a limitation in previous versions of OpenSSL.
252 *) Experimental encrypt-then-mac support.
254 Experimental support for encrypt then mac from
255 draft-gutmann-tls-encrypt-then-mac-02.txt
257 To enable it set the appropriate extension number (0x42 for the test
258 server) using e.g. -DTLSEXT_TYPE_encrypt_then_mac=0x42
260 For non-compliant peers (i.e. just about everything) this should have no
263 WARNING: EXPERIMENTAL, SUBJECT TO CHANGE.
267 *) Add EVP support for key wrapping algorithms, to avoid problems with
268 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
269 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
270 algorithms and include tests cases.
273 *) Extend CMS code to support RSA-PSS signatures and RSA-OAEP for
277 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
278 MGF1 digest and OAEP label.
281 *) Make openssl verify return errors.
282 [Chris Palmer <palmer@google.com> and Ben Laurie]
284 *) New function ASN1_TIME_diff to calculate the difference between two
285 ASN1_TIME structures or one structure and the current time.
288 *) Update fips_test_suite to support multiple command line options. New
289 test to induce all self test errors in sequence and check expected
293 *) Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and
294 sign or verify all in one operation.
297 *) Add fips_algvs: a multicall fips utility incorporating all the algorithm
298 test programs and fips_test_suite. Includes functionality to parse
299 the minimal script output of fipsalgest.pl directly.
302 *) Add authorisation parameter to FIPS_module_mode_set().
305 *) Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves.
308 *) Use separate DRBG fields for internal and external flags. New function
309 FIPS_drbg_health_check() to perform on demand health checking. Add
310 generation tests to fips_test_suite with reduced health check interval to
311 demonstrate periodic health checking. Add "nodh" option to
312 fips_test_suite to skip very slow DH test.
315 *) New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers
319 *) More extensive health check for DRBG checking many more failure modes.
320 New function FIPS_selftest_drbg_all() to handle every possible DRBG
321 combination: call this in fips_test_suite.
324 *) Add support for Dual EC DRBG from SP800-90. Update DRBG algorithm test
325 and POST to handle Dual EC cases.
328 *) Add support for canonical generation of DSA parameter 'g'. See
331 *) Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
332 POST to handle HMAC cases.
335 *) Add functions FIPS_module_version() and FIPS_module_version_text()
336 to return numerical and string versions of the FIPS module number.
339 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
340 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implemented
341 outside the validated module in the FIPS capable OpenSSL.
344 *) Minor change to DRBG entropy callback semantics. In some cases
345 there is no multiple of the block length between min_len and
346 max_len. Allow the callback to return more than max_len bytes
347 of entropy but discard any extra: it is the callback's responsibility
348 to ensure that the extra data discarded does not impact the
349 requested amount of entropy.
352 *) Add PRNG security strength checks to RSA, DSA and ECDSA using
353 information in FIPS186-3, SP800-57 and SP800-131A.
356 *) CCM support via EVP. Interface is very similar to GCM case except we
357 must supply all data in one chunk (i.e. no update, final) and the
358 message length must be supplied if AAD is used. Add algorithm test
362 *) Initial version of POST overhaul. Add POST callback to allow the status
363 of POST to be monitored and/or failures induced. Modify fips_test_suite
364 to use callback. Always run all selftests even if one fails.
367 *) XTS support including algorithm test driver in the fips_gcmtest program.
368 Note: this does increase the maximum key length from 32 to 64 bytes but
369 there should be no binary compatibility issues as existing applications
370 will never use XTS mode.
373 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
374 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
375 performs algorithm blocking for unapproved PRNG types. Also do not
376 set PRNG type in FIPS_mode_set(): leave this to the application.
377 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
378 the standard OpenSSL PRNG: set additional data to a date time vector.
381 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
382 This shouldn't present any incompatibility problems because applications
383 shouldn't be using these directly and any that are will need to rethink
384 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
387 *) Extensive self tests and health checking required by SP800-90 DRBG.
388 Remove strength parameter from FIPS_drbg_instantiate and always
389 instantiate at maximum supported strength.
392 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
395 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
398 *) New function DH_compute_key_padded() to compute a DH key and pad with
399 leading zeroes if needed: this complies with SP800-56A et al.
402 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
403 anything, incomplete, subject to change and largely untested at present.
406 *) Modify fipscanisteronly build option to only build the necessary object
407 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
410 *) Add experimental option FIPSSYMS to give all symbols in
411 fipscanister.o and FIPS or fips prefix. This will avoid
412 conflicts with future versions of OpenSSL. Add perl script
413 util/fipsas.pl to preprocess assembly language source files
414 and rename any affected symbols.
417 *) Add selftest checks and algorithm block of non-fips algorithms in
418 FIPS mode. Remove DES2 from selftests.
421 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
422 return internal method without any ENGINE dependencies. Add new
423 tiny fips sign and verify functions.
426 *) New build option no-ec2m to disable characteristic 2 code.
429 *) New build option "fipscanisteronly". This only builds fipscanister.o
430 and (currently) associated fips utilities. Uses the file Makefile.fips
431 instead of Makefile.org as the prototype.
434 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
435 Update fips_gcmtest to use IV generator.
438 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
439 setting output buffer to NULL. The *Final function must be
440 called although it will not retrieve any additional data. The tag
441 can be set or retrieved with a ctrl. The IV length is by default 12
442 bytes (96 bits) but can be set to an alternative value. If the IV
443 length exceeds the maximum IV length (currently 16 bytes) it cannot be
447 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
448 underlying do_cipher function handles all cipher semantics itself
449 including padding and finalisation. This is useful if (for example)
450 an ENGINE cipher handles block padding itself. The behaviour of
451 do_cipher is subtly changed if this flag is set: the return value
452 is the number of characters written to the output buffer (zero is
453 no longer an error code) or a negative error code. Also if the
454 input buffer is NULL and length 0 finalisation should be performed.
457 *) If a candidate issuer certificate is already part of the constructed
458 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
461 *) Improve forward-security support: add functions
463 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
464 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
466 for use by SSL/TLS servers; the callback function will be called whenever a
467 new session is created, and gets to decide whether the session may be
468 cached to make it resumable (return 0) or not (return 1). (As by the
469 SSL/TLS protocol specifications, the session_id sent by the server will be
470 empty to indicate that the session is not resumable; also, the server will
471 not generate RFC 4507 (RFC 5077) session tickets.)
473 A simple reasonable callback implementation is to return is_forward_secure.
474 This parameter will be set to 1 or 0 depending on the ciphersuite selected
475 by the SSL/TLS server library, indicating whether it can provide forward
477 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
479 *) New -verify_name option in command line utilities to set verification
483 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
484 Add CMAC pkey methods.
487 *) Experimental renegotiation in s_server -www mode. If the client
488 browses /reneg connection is renegotiated. If /renegcert it is
489 renegotiated requesting a certificate.
492 *) Add an "external" session cache for debugging purposes to s_server. This
493 should help trace issues which normally are only apparent in deployed
494 multi-process servers.
497 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
498 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
499 BIO_set_cipher() and some obscure PEM functions were changed so they
500 can now return an error. The RAND changes required a change to the
501 RAND_METHOD structure.
504 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
505 a gcc attribute to warn if the result of a function is ignored. This
506 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
507 whose return value is often ignored.
510 Changes between 1.0.2c and 1.0.2d [9 Jul 2015]
512 *) Alternate chains certificate forgery
514 During certificate verfification, OpenSSL will attempt to find an
515 alternative certificate chain if the first attempt to build such a chain
516 fails. An error in the implementation of this logic can mean that an
517 attacker could cause certain checks on untrusted certificates to be
518 bypassed, such as the CA flag, enabling them to use a valid leaf
519 certificate to act as a CA and "issue" an invalid certificate.
521 This issue was reported to OpenSSL by Adam Langley/David Benjamin
525 Changes between 1.0.2b and 1.0.2c [12 Jun 2015]
527 *) Fix HMAC ABI incompatibility. The previous version introduced an ABI
528 incompatibility in the handling of HMAC. The previous ABI has now been
532 Changes between 1.0.2a and 1.0.2b [11 Jun 2015]
534 *) Malformed ECParameters causes infinite loop
536 When processing an ECParameters structure OpenSSL enters an infinite loop
537 if the curve specified is over a specially malformed binary polynomial
540 This can be used to perform denial of service against any
541 system which processes public keys, certificate requests or
542 certificates. This includes TLS clients and TLS servers with
543 client authentication enabled.
545 This issue was reported to OpenSSL by Joseph Barr-Pixton.
549 *) Exploitable out-of-bounds read in X509_cmp_time
551 X509_cmp_time does not properly check the length of the ASN1_TIME
552 string and can read a few bytes out of bounds. In addition,
553 X509_cmp_time accepts an arbitrary number of fractional seconds in the
556 An attacker can use this to craft malformed certificates and CRLs of
557 various sizes and potentially cause a segmentation fault, resulting in
558 a DoS on applications that verify certificates or CRLs. TLS clients
559 that verify CRLs are affected. TLS clients and servers with client
560 authentication enabled may be affected if they use custom verification
563 This issue was reported to OpenSSL by Robert Swiecki (Google), and
564 independently by Hanno Böck.
568 *) PKCS7 crash with missing EnvelopedContent
570 The PKCS#7 parsing code does not handle missing inner EncryptedContent
571 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs
572 with missing content and trigger a NULL pointer dereference on parsing.
574 Applications that decrypt PKCS#7 data or otherwise parse PKCS#7
575 structures from untrusted sources are affected. OpenSSL clients and
576 servers are not affected.
578 This issue was reported to OpenSSL by Michal Zalewski (Google).
582 *) CMS verify infinite loop with unknown hash function
584 When verifying a signedData message the CMS code can enter an infinite loop
585 if presented with an unknown hash function OID. This can be used to perform
586 denial of service against any system which verifies signedData messages using
588 This issue was reported to OpenSSL by Johannes Bauer.
592 *) Race condition handling NewSessionTicket
594 If a NewSessionTicket is received by a multi-threaded client when attempting to
595 reuse a previous ticket then a race condition can occur potentially leading to
596 a double free of the ticket data.
600 *) Only support 256-bit or stronger elliptic curves with the
601 'ecdh_auto' setting (server) or by default (client). Of supported
602 curves, prefer P-256 (both).
605 Changes between 1.0.2 and 1.0.2a [19 Mar 2015]
607 *) ClientHello sigalgs DoS fix
609 If a client connects to an OpenSSL 1.0.2 server and renegotiates with an
610 invalid signature algorithms extension a NULL pointer dereference will
611 occur. This can be exploited in a DoS attack against the server.
613 This issue was was reported to OpenSSL by David Ramos of Stanford
616 [Stephen Henson and Matt Caswell]
618 *) Multiblock corrupted pointer fix
620 OpenSSL 1.0.2 introduced the "multiblock" performance improvement. This
621 feature only applies on 64 bit x86 architecture platforms that support AES
622 NI instructions. A defect in the implementation of "multiblock" can cause
623 OpenSSL's internal write buffer to become incorrectly set to NULL when
624 using non-blocking IO. Typically, when the user application is using a
625 socket BIO for writing, this will only result in a failed connection.
626 However if some other BIO is used then it is likely that a segmentation
627 fault will be triggered, thus enabling a potential DoS attack.
629 This issue was reported to OpenSSL by Daniel Danner and Rainer Mueller.
633 *) Segmentation fault in DTLSv1_listen fix
635 The DTLSv1_listen function is intended to be stateless and processes the
636 initial ClientHello from many peers. It is common for user code to loop
637 over the call to DTLSv1_listen until a valid ClientHello is received with
638 an associated cookie. A defect in the implementation of DTLSv1_listen means
639 that state is preserved in the SSL object from one invocation to the next
640 that can lead to a segmentation fault. Errors processing the initial
641 ClientHello can trigger this scenario. An example of such an error could be
642 that a DTLS1.0 only client is attempting to connect to a DTLS1.2 only
645 This issue was reported to OpenSSL by Per Allansson.
649 *) Segmentation fault in ASN1_TYPE_cmp fix
651 The function ASN1_TYPE_cmp will crash with an invalid read if an attempt is
652 made to compare ASN.1 boolean types. Since ASN1_TYPE_cmp is used to check
653 certificate signature algorithm consistency this can be used to crash any
654 certificate verification operation and exploited in a DoS attack. Any
655 application which performs certificate verification is vulnerable including
656 OpenSSL clients and servers which enable client authentication.
660 *) Segmentation fault for invalid PSS parameters fix
662 The signature verification routines will crash with a NULL pointer
663 dereference if presented with an ASN.1 signature using the RSA PSS
664 algorithm and invalid parameters. Since these routines are used to verify
665 certificate signature algorithms this can be used to crash any
666 certificate verification operation and exploited in a DoS attack. Any
667 application which performs certificate verification is vulnerable including
668 OpenSSL clients and servers which enable client authentication.
670 This issue was was reported to OpenSSL by Brian Carpenter.
674 *) ASN.1 structure reuse memory corruption fix
676 Reusing a structure in ASN.1 parsing may allow an attacker to cause
677 memory corruption via an invalid write. Such reuse is and has been
678 strongly discouraged and is believed to be rare.
680 Applications that parse structures containing CHOICE or ANY DEFINED BY
681 components may be affected. Certificate parsing (d2i_X509 and related
682 functions) are however not affected. OpenSSL clients and servers are
687 *) PKCS7 NULL pointer dereferences fix
689 The PKCS#7 parsing code does not handle missing outer ContentInfo
690 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs with
691 missing content and trigger a NULL pointer dereference on parsing.
693 Applications that verify PKCS#7 signatures, decrypt PKCS#7 data or
694 otherwise parse PKCS#7 structures from untrusted sources are
695 affected. OpenSSL clients and servers are not affected.
697 This issue was reported to OpenSSL by Michal Zalewski (Google).
701 *) DoS via reachable assert in SSLv2 servers fix
703 A malicious client can trigger an OPENSSL_assert (i.e., an abort) in
704 servers that both support SSLv2 and enable export cipher suites by sending
705 a specially crafted SSLv2 CLIENT-MASTER-KEY message.
707 This issue was discovered by Sean Burford (Google) and Emilia Käsper
708 (OpenSSL development team).
712 *) Empty CKE with client auth and DHE fix
714 If client auth is used then a server can seg fault in the event of a DHE
715 ciphersuite being selected and a zero length ClientKeyExchange message
716 being sent by the client. This could be exploited in a DoS attack.
720 *) Handshake with unseeded PRNG fix
722 Under certain conditions an OpenSSL 1.0.2 client can complete a handshake
723 with an unseeded PRNG. The conditions are:
724 - The client is on a platform where the PRNG has not been seeded
725 automatically, and the user has not seeded manually
726 - A protocol specific client method version has been used (i.e. not
727 SSL_client_methodv23)
728 - A ciphersuite is used that does not require additional random data from
729 the PRNG beyond the initial ClientHello client random (e.g. PSK-RC4-SHA).
731 If the handshake succeeds then the client random that has been used will
732 have been generated from a PRNG with insufficient entropy and therefore the
733 output may be predictable.
735 For example using the following command with an unseeded openssl will
736 succeed on an unpatched platform:
738 openssl s_client -psk 1a2b3c4d -tls1_2 -cipher PSK-RC4-SHA
742 *) Use After Free following d2i_ECPrivatekey error fix
744 A malformed EC private key file consumed via the d2i_ECPrivateKey function
745 could cause a use after free condition. This, in turn, could cause a double
746 free in several private key parsing functions (such as d2i_PrivateKey
747 or EVP_PKCS82PKEY) and could lead to a DoS attack or memory corruption
748 for applications that receive EC private keys from untrusted
749 sources. This scenario is considered rare.
751 This issue was discovered by the BoringSSL project and fixed in their
756 *) X509_to_X509_REQ NULL pointer deref fix
758 The function X509_to_X509_REQ will crash with a NULL pointer dereference if
759 the certificate key is invalid. This function is rarely used in practice.
761 This issue was discovered by Brian Carpenter.
765 *) Removed the export ciphers from the DEFAULT ciphers
768 Changes between 1.0.1l and 1.0.2 [22 Jan 2015]
770 *) Facilitate "universal" ARM builds targeting range of ARM ISAs, e.g.
771 ARMv5 through ARMv8, as opposite to "locking" it to single one.
772 So far those who have to target multiple plaforms would compromise
773 and argue that binary targeting say ARMv5 would still execute on
774 ARMv8. "Universal" build resolves this compromise by providing
775 near-optimal performance even on newer platforms.
778 *) Accelerated NIST P-256 elliptic curve implementation for x86_64
779 (other platforms pending).
780 [Shay Gueron & Vlad Krasnov (Intel Corp), Andy Polyakov]
782 *) Add support for the SignedCertificateTimestampList certificate and
783 OCSP response extensions from RFC6962.
786 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
787 for corner cases. (Certain input points at infinity could lead to
788 bogus results, with non-infinity inputs mapped to infinity too.)
791 *) Initial support for PowerISA 2.0.7, first implemented in POWER8.
792 This covers AES, SHA256/512 and GHASH. "Initial" means that most
793 common cases are optimized and there still is room for further
794 improvements. Vector Permutation AES for Altivec is also added.
797 *) Add support for little-endian ppc64 Linux target.
798 [Marcelo Cerri (IBM)]
800 *) Initial support for AMRv8 ISA crypto extensions. This covers AES,
801 SHA1, SHA256 and GHASH. "Initial" means that most common cases
802 are optimized and there still is room for further improvements.
803 Both 32- and 64-bit modes are supported.
804 [Andy Polyakov, Ard Biesheuvel (Linaro)]
806 *) Improved ARMv7 NEON support.
809 *) Support for SPARC Architecture 2011 crypto extensions, first
810 implemented in SPARC T4. This covers AES, DES, Camellia, SHA1,
811 SHA256/512, MD5, GHASH and modular exponentiation.
812 [Andy Polyakov, David Miller]
814 *) Accelerated modular exponentiation for Intel processors, a.k.a.
816 [Shay Gueron & Vlad Krasnov (Intel Corp)]
818 *) Support for new and upcoming Intel processors, including AVX2,
819 BMI and SHA ISA extensions. This includes additional "stitched"
820 implementations, AESNI-SHA256 and GCM, and multi-buffer support
823 This work was sponsored by Intel Corp.
826 *) Support for DTLS 1.2. This adds two sets of DTLS methods: DTLS_*_method()
827 supports both DTLS 1.2 and 1.0 and should use whatever version the peer
828 supports and DTLSv1_2_*_method() which supports DTLS 1.2 only.
831 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
832 this fixes a limiation in previous versions of OpenSSL.
835 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
836 MGF1 digest and OAEP label.
839 *) Add EVP support for key wrapping algorithms, to avoid problems with
840 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
841 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
842 algorithms and include tests cases.
845 *) Add functions to allocate and set the fields of an ECDSA_METHOD
847 [Douglas E. Engert, Steve Henson]
849 *) New functions OPENSSL_gmtime_diff and ASN1_TIME_diff to find the
850 difference in days and seconds between two tm or ASN1_TIME structures.
853 *) Add -rev test option to s_server to just reverse order of characters
854 received by client and send back to server. Also prints an abbreviated
855 summary of the connection parameters.
858 *) New option -brief for s_client and s_server to print out a brief summary
859 of connection parameters.
862 *) Add callbacks for arbitrary TLS extensions.
863 [Trevor Perrin <trevp@trevp.net> and Ben Laurie]
865 *) New option -crl_download in several openssl utilities to download CRLs
866 from CRLDP extension in certificates.
869 *) New options -CRL and -CRLform for s_client and s_server for CRLs.
872 *) New function X509_CRL_diff to generate a delta CRL from the difference
873 of two full CRLs. Add support to "crl" utility.
876 *) New functions to set lookup_crls function and to retrieve
877 X509_STORE from X509_STORE_CTX.
880 *) Print out deprecated issuer and subject unique ID fields in
884 *) Extend OCSP I/O functions so they can be used for simple general purpose
885 HTTP as well as OCSP. New wrapper function which can be used to download
886 CRLs using the OCSP API.
889 *) Delegate command line handling in s_client/s_server to SSL_CONF APIs.
892 *) SSL_CONF* functions. These provide a common framework for application
893 configuration using configuration files or command lines.
896 *) SSL/TLS tracing code. This parses out SSL/TLS records using the
897 message callback and prints the results. Needs compile time option
898 "enable-ssl-trace". New options to s_client and s_server to enable
902 *) New ctrl and macro to retrieve supported points extensions.
903 Print out extension in s_server and s_client.
906 *) New functions to retrieve certificate signature and signature
910 *) Add functions to retrieve and manipulate the raw cipherlist sent by a
914 *) New Suite B modes for TLS code. These use and enforce the requirements
915 of RFC6460: restrict ciphersuites, only permit Suite B algorithms and
916 only use Suite B curves. The Suite B modes can be set by using the
917 strings "SUITEB128", "SUITEB192" or "SUITEB128ONLY" for the cipherstring.
920 *) New chain verification flags for Suite B levels of security. Check
921 algorithms are acceptable when flags are set in X509_verify_cert.
924 *) Make tls1_check_chain return a set of flags indicating checks passed
925 by a certificate chain. Add additional tests to handle client
926 certificates: checks for matching certificate type and issuer name
930 *) If an attempt is made to use a signature algorithm not in the peer
931 preference list abort the handshake. If client has no suitable
932 signature algorithms in response to a certificate request do not
936 *) If server EC tmp key is not in client preference list abort handshake.
939 *) Add support for certificate stores in CERT structure. This makes it
940 possible to have different stores per SSL structure or one store in
941 the parent SSL_CTX. Include distint stores for certificate chain
942 verification and chain building. New ctrl SSL_CTRL_BUILD_CERT_CHAIN
943 to build and store a certificate chain in CERT structure: returing
944 an error if the chain cannot be built: this will allow applications
945 to test if a chain is correctly configured.
947 Note: if the CERT based stores are not set then the parent SSL_CTX
948 store is used to retain compatibility with existing behaviour.
952 *) New function ssl_set_client_disabled to set a ciphersuite disabled
953 mask based on the current session, check mask when sending client
954 hello and checking the requested ciphersuite.
957 *) New ctrls to retrieve and set certificate types in a certificate
958 request message. Print out received values in s_client. If certificate
959 types is not set with custom values set sensible values based on
960 supported signature algorithms.
963 *) Support for distinct client and server supported signature algorithms.
966 *) Add certificate callback. If set this is called whenever a certificate
967 is required by client or server. An application can decide which
968 certificate chain to present based on arbitrary criteria: for example
969 supported signature algorithms. Add very simple example to s_server.
970 This fixes many of the problems and restrictions of the existing client
971 certificate callback: for example you can now clear an existing
972 certificate and specify the whole chain.
975 *) Add new "valid_flags" field to CERT_PKEY structure which determines what
976 the certificate can be used for (if anything). Set valid_flags field
977 in new tls1_check_chain function. Simplify ssl_set_cert_masks which used
978 to have similar checks in it.
980 Add new "cert_flags" field to CERT structure and include a "strict mode".
981 This enforces some TLS certificate requirements (such as only permitting
982 certificate signature algorithms contained in the supported algorithms
983 extension) which some implementations ignore: this option should be used
984 with caution as it could cause interoperability issues.
987 *) Update and tidy signature algorithm extension processing. Work out
988 shared signature algorithms based on preferences and peer algorithms
989 and print them out in s_client and s_server. Abort handshake if no
990 shared signature algorithms.
993 *) Add new functions to allow customised supported signature algorithms
994 for SSL and SSL_CTX structures. Add options to s_client and s_server
998 *) New function SSL_certs_clear() to delete all references to certificates
999 from an SSL structure. Before this once a certificate had been added
1000 it couldn't be removed.
1003 *) Integrate hostname, email address and IP address checking with certificate
1004 verification. New verify options supporting checking in opensl utility.
1007 *) Fixes and wildcard matching support to hostname and email checking
1008 functions. Add manual page.
1009 [Florian Weimer (Red Hat Product Security Team)]
1011 *) New functions to check a hostname email or IP address against a
1012 certificate. Add options x509 utility to print results of checks against
1016 *) Fix OCSP checking.
1017 [Rob Stradling <rob.stradling@comodo.com> and Ben Laurie]
1019 *) Initial experimental support for explicitly trusted non-root CAs.
1020 OpenSSL still tries to build a complete chain to a root but if an
1021 intermediate CA has a trust setting included that is used. The first
1022 setting is used: whether to trust (e.g., -addtrust option to the x509
1026 *) Add -trusted_first option which attempts to find certificates in the
1027 trusted store even if an untrusted chain is also supplied.
1030 *) MIPS assembly pack updates: support for MIPS32r2 and SmartMIPS ASE,
1031 platform support for Linux and Android.
1034 *) Support for linux-x32, ILP32 environment in x86_64 framework.
1037 *) Experimental multi-implementation support for FIPS capable OpenSSL.
1038 When in FIPS mode the approved implementations are used as normal,
1039 when not in FIPS mode the internal unapproved versions are used instead.
1040 This means that the FIPS capable OpenSSL isn't forced to use the
1041 (often lower performance) FIPS implementations outside FIPS mode.
1044 *) Transparently support X9.42 DH parameters when calling
1045 PEM_read_bio_DHparameters. This means existing applications can handle
1046 the new parameter format automatically.
1049 *) Initial experimental support for X9.42 DH parameter format: mainly
1050 to support use of 'q' parameter for RFC5114 parameters.
1053 *) Add DH parameters from RFC5114 including test data to dhtest.
1056 *) Support for automatic EC temporary key parameter selection. If enabled
1057 the most preferred EC parameters are automatically used instead of
1058 hardcoded fixed parameters. Now a server just has to call:
1059 SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically
1060 support ECDH and use the most appropriate parameters.
1063 *) Enhance and tidy EC curve and point format TLS extension code. Use
1064 static structures instead of allocation if default values are used.
1065 New ctrls to set curves we wish to support and to retrieve shared curves.
1066 Print out shared curves in s_server. New options to s_server and s_client
1067 to set list of supported curves.
1070 *) New ctrls to retrieve supported signature algorithms and
1071 supported curve values as an array of NIDs. Extend openssl utility
1072 to print out received values.
1075 *) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert
1076 between NIDs and the more common NIST names such as "P-256". Enhance
1077 ecparam utility and ECC method to recognise the NIST names for curves.
1080 *) Enhance SSL/TLS certificate chain handling to support different
1081 chains for each certificate instead of one chain in the parent SSL_CTX.
1084 *) Support for fixed DH ciphersuite client authentication: where both
1085 server and client use DH certificates with common parameters.
1088 *) Support for fixed DH ciphersuites: those requiring DH server
1092 *) New function i2d_re_X509_tbs for re-encoding the TBS portion of
1094 Note: Related 1.0.2-beta specific macros X509_get_cert_info,
1095 X509_CINF_set_modified, X509_CINF_get_issuer, X509_CINF_get_extensions and
1096 X509_CINF_get_signature were reverted post internal team review.
1098 Changes between 1.0.1k and 1.0.1l [15 Jan 2015]
1100 *) Build fixes for the Windows and OpenVMS platforms
1101 [Matt Caswell and Richard Levitte]
1103 Changes between 1.0.1j and 1.0.1k [8 Jan 2015]
1105 *) Fix DTLS segmentation fault in dtls1_get_record. A carefully crafted DTLS
1106 message can cause a segmentation fault in OpenSSL due to a NULL pointer
1107 dereference. This could lead to a Denial Of Service attack. Thanks to
1108 Markus Stenberg of Cisco Systems, Inc. for reporting this issue.
1112 *) Fix DTLS memory leak in dtls1_buffer_record. A memory leak can occur in the
1113 dtls1_buffer_record function under certain conditions. In particular this
1114 could occur if an attacker sent repeated DTLS records with the same
1115 sequence number but for the next epoch. The memory leak could be exploited
1116 by an attacker in a Denial of Service attack through memory exhaustion.
1117 Thanks to Chris Mueller for reporting this issue.
1121 *) Fix issue where no-ssl3 configuration sets method to NULL. When openssl is
1122 built with the no-ssl3 option and a SSL v3 ClientHello is received the ssl
1123 method would be set to NULL which could later result in a NULL pointer
1124 dereference. Thanks to Frank Schmirler for reporting this issue.
1128 *) Abort handshake if server key exchange message is omitted for ephemeral
1131 Thanks to Karthikeyan Bhargavan of the PROSECCO team at INRIA for
1132 reporting this issue.
1136 *) Remove non-export ephemeral RSA code on client and server. This code
1137 violated the TLS standard by allowing the use of temporary RSA keys in
1138 non-export ciphersuites and could be used by a server to effectively
1139 downgrade the RSA key length used to a value smaller than the server
1140 certificate. Thanks for Karthikeyan Bhargavan of the PROSECCO team at
1141 INRIA or reporting this issue.
1145 *) Fixed issue where DH client certificates are accepted without verification.
1146 An OpenSSL server will accept a DH certificate for client authentication
1147 without the certificate verify message. This effectively allows a client to
1148 authenticate without the use of a private key. This only affects servers
1149 which trust a client certificate authority which issues certificates
1150 containing DH keys: these are extremely rare and hardly ever encountered.
1151 Thanks for Karthikeyan Bhargavan of the PROSECCO team at INRIA or reporting
1156 *) Ensure that the session ID context of an SSL is updated when its
1157 SSL_CTX is updated via SSL_set_SSL_CTX.
1159 The session ID context is typically set from the parent SSL_CTX,
1160 and can vary with the CTX.
1163 *) Fix various certificate fingerprint issues.
1165 By using non-DER or invalid encodings outside the signed portion of a
1166 certificate the fingerprint can be changed without breaking the signature.
1167 Although no details of the signed portion of the certificate can be changed
1168 this can cause problems with some applications: e.g. those using the
1169 certificate fingerprint for blacklists.
1171 1. Reject signatures with non zero unused bits.
1173 If the BIT STRING containing the signature has non zero unused bits reject
1174 the signature. All current signature algorithms require zero unused bits.
1176 2. Check certificate algorithm consistency.
1178 Check the AlgorithmIdentifier inside TBS matches the one in the
1179 certificate signature. NB: this will result in signature failure
1180 errors for some broken certificates.
1182 Thanks to Konrad Kraszewski from Google for reporting this issue.
1184 3. Check DSA/ECDSA signatures use DER.
1186 Reencode DSA/ECDSA signatures and compare with the original received
1187 signature. Return an error if there is a mismatch.
1189 This will reject various cases including garbage after signature
1190 (thanks to Antti Karjalainen and Tuomo Untinen from the Codenomicon CROSS
1191 program for discovering this case) and use of BER or invalid ASN.1 INTEGERs
1192 (negative or with leading zeroes).
1194 Further analysis was conducted and fixes were developed by Stephen Henson
1195 of the OpenSSL core team.
1200 *) Correct Bignum squaring. Bignum squaring (BN_sqr) may produce incorrect
1201 results on some platforms, including x86_64. This bug occurs at random
1202 with a very low probability, and is not known to be exploitable in any
1203 way, though its exact impact is difficult to determine. Thanks to Pieter
1204 Wuille (Blockstream) who reported this issue and also suggested an initial
1205 fix. Further analysis was conducted by the OpenSSL development team and
1206 Adam Langley of Google. The final fix was developed by Andy Polyakov of
1207 the OpenSSL core team.
1211 *) Do not resume sessions on the server if the negotiated protocol
1212 version does not match the session's version. Resuming with a different
1213 version, while not strictly forbidden by the RFC, is of questionable
1214 sanity and breaks all known clients.
1215 [David Benjamin, Emilia Käsper]
1217 *) Tighten handling of the ChangeCipherSpec (CCS) message: reject
1218 early CCS messages during renegotiation. (Note that because
1219 renegotiation is encrypted, this early CCS was not exploitable.)
1222 *) Tighten client-side session ticket handling during renegotiation:
1223 ensure that the client only accepts a session ticket if the server sends
1224 the extension anew in the ServerHello. Previously, a TLS client would
1225 reuse the old extension state and thus accept a session ticket if one was
1226 announced in the initial ServerHello.
1228 Similarly, ensure that the client requires a session ticket if one
1229 was advertised in the ServerHello. Previously, a TLS client would
1230 ignore a missing NewSessionTicket message.
1233 Changes between 1.0.1i and 1.0.1j [15 Oct 2014]
1235 *) SRTP Memory Leak.
1237 A flaw in the DTLS SRTP extension parsing code allows an attacker, who
1238 sends a carefully crafted handshake message, to cause OpenSSL to fail
1239 to free up to 64k of memory causing a memory leak. This could be
1240 exploited in a Denial Of Service attack. This issue affects OpenSSL
1241 1.0.1 server implementations for both SSL/TLS and DTLS regardless of
1242 whether SRTP is used or configured. Implementations of OpenSSL that
1243 have been compiled with OPENSSL_NO_SRTP defined are not affected.
1245 The fix was developed by the OpenSSL team.
1249 *) Session Ticket Memory Leak.
1251 When an OpenSSL SSL/TLS/DTLS server receives a session ticket the
1252 integrity of that ticket is first verified. In the event of a session
1253 ticket integrity check failing, OpenSSL will fail to free memory
1254 causing a memory leak. By sending a large number of invalid session
1255 tickets an attacker could exploit this issue in a Denial Of Service
1260 *) Build option no-ssl3 is incomplete.
1262 When OpenSSL is configured with "no-ssl3" as a build option, servers
1263 could accept and complete a SSL 3.0 handshake, and clients could be
1264 configured to send them.
1266 [Akamai and the OpenSSL team]
1268 *) Add support for TLS_FALLBACK_SCSV.
1269 Client applications doing fallback retries should call
1270 SSL_set_mode(s, SSL_MODE_SEND_FALLBACK_SCSV).
1272 [Adam Langley, Bodo Moeller]
1274 *) Add additional DigestInfo checks.
1276 Reencode DigestInto in DER and check against the original when
1277 verifying RSA signature: this will reject any improperly encoded
1278 DigestInfo structures.
1280 Note: this is a precautionary measure and no attacks are currently known.
1284 Changes between 1.0.1h and 1.0.1i [6 Aug 2014]
1286 *) Fix SRP buffer overrun vulnerability. Invalid parameters passed to the
1287 SRP code can be overrun an internal buffer. Add sanity check that
1288 g, A, B < N to SRP code.
1290 Thanks to Sean Devlin and Watson Ladd of Cryptography Services, NCC
1291 Group for discovering this issue.
1295 *) A flaw in the OpenSSL SSL/TLS server code causes the server to negotiate
1296 TLS 1.0 instead of higher protocol versions when the ClientHello message
1297 is badly fragmented. This allows a man-in-the-middle attacker to force a
1298 downgrade to TLS 1.0 even if both the server and the client support a
1299 higher protocol version, by modifying the client's TLS records.
1301 Thanks to David Benjamin and Adam Langley (Google) for discovering and
1302 researching this issue.
1306 *) OpenSSL DTLS clients enabling anonymous (EC)DH ciphersuites are subject
1307 to a denial of service attack. A malicious server can crash the client
1308 with a null pointer dereference (read) by specifying an anonymous (EC)DH
1309 ciphersuite and sending carefully crafted handshake messages.
1311 Thanks to Felix Gröbert (Google) for discovering and researching this
1316 *) By sending carefully crafted DTLS packets an attacker could cause openssl
1317 to leak memory. This can be exploited through a Denial of Service attack.
1318 Thanks to Adam Langley for discovering and researching this issue.
1322 *) An attacker can force openssl to consume large amounts of memory whilst
1323 processing DTLS handshake messages. This can be exploited through a
1324 Denial of Service attack.
1325 Thanks to Adam Langley for discovering and researching this issue.
1329 *) An attacker can force an error condition which causes openssl to crash
1330 whilst processing DTLS packets due to memory being freed twice. This
1331 can be exploited through a Denial of Service attack.
1332 Thanks to Adam Langley and Wan-Teh Chang for discovering and researching
1337 *) If a multithreaded client connects to a malicious server using a resumed
1338 session and the server sends an ec point format extension it could write
1339 up to 255 bytes to freed memory.
1341 Thanks to Gabor Tyukasz (LogMeIn Inc) for discovering and researching this
1346 *) A malicious server can crash an OpenSSL client with a null pointer
1347 dereference (read) by specifying an SRP ciphersuite even though it was not
1348 properly negotiated with the client. This can be exploited through a
1349 Denial of Service attack.
1351 Thanks to Joonas Kuorilehto and Riku Hietamäki (Codenomicon) for
1352 discovering and researching this issue.
1356 *) A flaw in OBJ_obj2txt may cause pretty printing functions such as
1357 X509_name_oneline, X509_name_print_ex et al. to leak some information
1358 from the stack. Applications may be affected if they echo pretty printing
1359 output to the attacker.
1361 Thanks to Ivan Fratric (Google) for discovering this issue.
1363 [Emilia Käsper, and Steve Henson]
1365 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
1366 for corner cases. (Certain input points at infinity could lead to
1367 bogus results, with non-infinity inputs mapped to infinity too.)
1370 Changes between 1.0.1g and 1.0.1h [5 Jun 2014]
1372 *) Fix for SSL/TLS MITM flaw. An attacker using a carefully crafted
1373 handshake can force the use of weak keying material in OpenSSL
1374 SSL/TLS clients and servers.
1376 Thanks to KIKUCHI Masashi (Lepidum Co. Ltd.) for discovering and
1377 researching this issue. (CVE-2014-0224)
1378 [KIKUCHI Masashi, Steve Henson]
1380 *) Fix DTLS recursion flaw. By sending an invalid DTLS handshake to an
1381 OpenSSL DTLS client the code can be made to recurse eventually crashing
1384 Thanks to Imre Rad (Search-Lab Ltd.) for discovering this issue.
1386 [Imre Rad, Steve Henson]
1388 *) Fix DTLS invalid fragment vulnerability. A buffer overrun attack can
1389 be triggered by sending invalid DTLS fragments to an OpenSSL DTLS
1390 client or server. This is potentially exploitable to run arbitrary
1391 code on a vulnerable client or server.
1393 Thanks to Jüri Aedla for reporting this issue. (CVE-2014-0195)
1394 [Jüri Aedla, Steve Henson]
1396 *) Fix bug in TLS code where clients enable anonymous ECDH ciphersuites
1397 are subject to a denial of service attack.
1399 Thanks to Felix Gröbert and Ivan Fratric at Google for discovering
1400 this issue. (CVE-2014-3470)
1401 [Felix Gröbert, Ivan Fratric, Steve Henson]
1403 *) Harmonize version and its documentation. -f flag is used to display
1405 [mancha <mancha1@zoho.com>]
1407 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
1408 in i2d_ECPrivateKey.
1409 [mancha <mancha1@zoho.com>]
1411 *) Fix some double frees. These are not thought to be exploitable.
1412 [mancha <mancha1@zoho.com>]
1414 Changes between 1.0.1f and 1.0.1g [7 Apr 2014]
1416 *) A missing bounds check in the handling of the TLS heartbeat extension
1417 can be used to reveal up to 64k of memory to a connected client or
1420 Thanks for Neel Mehta of Google Security for discovering this bug and to
1421 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
1422 preparing the fix (CVE-2014-0160)
1423 [Adam Langley, Bodo Moeller]
1425 *) Fix for the attack described in the paper "Recovering OpenSSL
1426 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
1427 by Yuval Yarom and Naomi Benger. Details can be obtained from:
1428 http://eprint.iacr.org/2014/140
1430 Thanks to Yuval Yarom and Naomi Benger for discovering this
1431 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
1432 [Yuval Yarom and Naomi Benger]
1434 *) TLS pad extension: draft-agl-tls-padding-03
1436 Workaround for the "TLS hang bug" (see FAQ and PR#2771): if the
1437 TLS client Hello record length value would otherwise be > 255 and
1438 less that 512 pad with a dummy extension containing zeroes so it
1439 is at least 512 bytes long.
1441 [Adam Langley, Steve Henson]
1443 Changes between 1.0.1e and 1.0.1f [6 Jan 2014]
1445 *) Fix for TLS record tampering bug. A carefully crafted invalid
1446 handshake could crash OpenSSL with a NULL pointer exception.
1447 Thanks to Anton Johansson for reporting this issues.
1450 *) Keep original DTLS digest and encryption contexts in retransmission
1451 structures so we can use the previous session parameters if they need
1452 to be resent. (CVE-2013-6450)
1455 *) Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which
1456 avoids preferring ECDHE-ECDSA ciphers when the client appears to be
1457 Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for
1458 several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug
1459 is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing
1460 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer.
1461 [Rob Stradling, Adam Langley]
1463 Changes between 1.0.1d and 1.0.1e [11 Feb 2013]
1465 *) Correct fix for CVE-2013-0169. The original didn't work on AES-NI
1466 supporting platforms or when small records were transferred.
1467 [Andy Polyakov, Steve Henson]
1469 Changes between 1.0.1c and 1.0.1d [5 Feb 2013]
1471 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
1473 This addresses the flaw in CBC record processing discovered by
1474 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
1475 at: http://www.isg.rhul.ac.uk/tls/
1477 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
1478 Security Group at Royal Holloway, University of London
1479 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
1480 Emilia Käsper for the initial patch.
1482 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
1484 *) Fix flaw in AESNI handling of TLS 1.2 and 1.1 records for CBC mode
1485 ciphersuites which can be exploited in a denial of service attack.
1486 Thanks go to and to Adam Langley <agl@chromium.org> for discovering
1487 and detecting this bug and to Wolfgang Ettlinger
1488 <wolfgang.ettlinger@gmail.com> for independently discovering this issue.
1492 *) Return an error when checking OCSP signatures when key is NULL.
1493 This fixes a DoS attack. (CVE-2013-0166)
1496 *) Make openssl verify return errors.
1497 [Chris Palmer <palmer@google.com> and Ben Laurie]
1499 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
1500 the right response is stapled. Also change SSL_get_certificate()
1501 so it returns the certificate actually sent.
1502 See http://rt.openssl.org/Ticket/Display.html?id=2836.
1503 [Rob Stradling <rob.stradling@comodo.com>]
1505 *) Fix possible deadlock when decoding public keys.
1508 *) Don't use TLS 1.0 record version number in initial client hello
1512 Changes between 1.0.1b and 1.0.1c [10 May 2012]
1514 *) Sanity check record length before skipping explicit IV in TLS
1515 1.2, 1.1 and DTLS to fix DoS attack.
1517 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
1518 fuzzing as a service testing platform.
1522 *) Initialise tkeylen properly when encrypting CMS messages.
1523 Thanks to Solar Designer of Openwall for reporting this issue.
1526 *) In FIPS mode don't try to use composite ciphers as they are not
1530 Changes between 1.0.1a and 1.0.1b [26 Apr 2012]
1532 *) OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and
1533 1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately
1534 mean any application compiled against OpenSSL 1.0.0 headers setting
1535 SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disablng
1536 TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to
1537 0x10000000L Any application which was previously compiled against
1538 OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1
1539 will need to be recompiled as a result. Letting be results in
1540 inability to disable specifically TLS 1.1 and in client context,
1541 in unlike event, limit maximum offered version to TLS 1.0 [see below].
1544 *) In order to ensure interoperabilty SSL_OP_NO_protocolX does not
1545 disable just protocol X, but all protocols above X *if* there are
1546 protocols *below* X still enabled. In more practical terms it means
1547 that if application wants to disable TLS1.0 in favor of TLS1.1 and
1548 above, it's not sufficient to pass SSL_OP_NO_TLSv1, one has to pass
1549 SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2. This applies to
1553 Changes between 1.0.1 and 1.0.1a [19 Apr 2012]
1555 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
1556 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
1557 in CRYPTO_realloc_clean.
1559 Thanks to Tavis Ormandy, Google Security Team, for discovering this
1560 issue and to Adam Langley <agl@chromium.org> for fixing it.
1562 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
1564 *) Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections.
1567 *) Workarounds for some broken servers that "hang" if a client hello
1568 record length exceeds 255 bytes.
1570 1. Do not use record version number > TLS 1.0 in initial client
1571 hello: some (but not all) hanging servers will now work.
1572 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate
1573 the number of ciphers sent in the client hello. This should be
1574 set to an even number, such as 50, for example by passing:
1575 -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure.
1576 Most broken servers should now work.
1577 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable
1578 TLS 1.2 client support entirely.
1581 *) Fix SEGV in Vector Permutation AES module observed in OpenSSH.
1584 Changes between 1.0.0h and 1.0.1 [14 Mar 2012]
1586 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET
1587 STRING form instead of a DigestInfo.
1590 *) The format used for MDC2 RSA signatures is inconsistent between EVP
1591 and the RSA_sign/RSA_verify functions. This was made more apparent when
1592 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
1593 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
1594 the correct format in RSA_verify so both forms transparently work.
1597 *) Some servers which support TLS 1.0 can choke if we initially indicate
1598 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
1599 encrypted premaster secret. As a workaround use the maximum permitted
1600 client version in client hello, this should keep such servers happy
1601 and still work with previous versions of OpenSSL.
1604 *) Add support for TLS/DTLS heartbeats.
1605 [Robin Seggelmann <seggelmann@fh-muenster.de>]
1607 *) Add support for SCTP.
1608 [Robin Seggelmann <seggelmann@fh-muenster.de>]
1610 *) Improved PRNG seeding for VOS.
1611 [Paul Green <Paul.Green@stratus.com>]
1613 *) Extensive assembler packs updates, most notably:
1615 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
1616 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
1617 - x86_64: bit-sliced AES implementation;
1618 - ARM: NEON support, contemporary platforms optimizations;
1619 - s390x: z196 support;
1620 - *: GHASH and GF(2^m) multiplication implementations;
1624 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
1625 (removal of unnecessary code)
1626 [Peter Sylvester <peter.sylvester@edelweb.fr>]
1628 *) Add TLS key material exporter from RFC 5705.
1631 *) Add DTLS-SRTP negotiation from RFC 5764.
1634 *) Add Next Protocol Negotiation,
1635 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
1636 disabled with a no-npn flag to config or Configure. Code donated
1638 [Adam Langley <agl@google.com> and Ben Laurie]
1640 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
1641 NIST-P256, NIST-P521, with constant-time single point multiplication on
1642 typical inputs. Compiler support for the nonstandard type __uint128_t is
1643 required to use this (present in gcc 4.4 and later, for 64-bit builds).
1644 Code made available under Apache License version 2.0.
1646 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
1647 line to include this in your build of OpenSSL, and run "make depend" (or
1648 "make update"). This enables the following EC_METHODs:
1650 EC_GFp_nistp224_method()
1651 EC_GFp_nistp256_method()
1652 EC_GFp_nistp521_method()
1654 EC_GROUP_new_by_curve_name() will automatically use these (while
1655 EC_GROUP_new_curve_GFp() currently prefers the more flexible
1657 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
1659 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
1660 all platforms. Move ssize_t definition from e_os.h to the public
1661 header file e_os2.h as it now appears in public header file cms.h
1664 *) New -sigopt option to the ca, req and x509 utilities. Additional
1665 signature parameters can be passed using this option and in
1669 *) Add RSA PSS signing function. This will generate and set the
1670 appropriate AlgorithmIdentifiers for PSS based on those in the
1671 corresponding EVP_MD_CTX structure. No application support yet.
1674 *) Support for companion algorithm specific ASN1 signing routines.
1675 New function ASN1_item_sign_ctx() signs a pre-initialised
1676 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
1677 the appropriate parameters.
1680 *) Add new algorithm specific ASN1 verification initialisation function
1681 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
1682 handling will be the same no matter what EVP_PKEY_METHOD is used.
1683 Add a PSS handler to support verification of PSS signatures: checked
1684 against a number of sample certificates.
1687 *) Add signature printing for PSS. Add PSS OIDs.
1688 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
1690 *) Add algorithm specific signature printing. An individual ASN1 method
1691 can now print out signatures instead of the standard hex dump.
1693 More complex signatures (e.g. PSS) can print out more meaningful
1694 information. Include DSA version that prints out the signature
1698 *) Password based recipient info support for CMS library: implementing
1702 *) Split password based encryption into PBES2 and PBKDF2 functions. This
1703 neatly separates the code into cipher and PBE sections and is required
1704 for some algorithms that split PBES2 into separate pieces (such as
1705 password based CMS).
1708 *) Session-handling fixes:
1709 - Fix handling of connections that are resuming with a session ID,
1710 but also support Session Tickets.
1711 - Fix a bug that suppressed issuing of a new ticket if the client
1712 presented a ticket with an expired session.
1713 - Try to set the ticket lifetime hint to something reasonable.
1714 - Make tickets shorter by excluding irrelevant information.
1715 - On the client side, don't ignore renewed tickets.
1716 [Adam Langley, Bodo Moeller (Google)]
1718 *) Fix PSK session representation.
1721 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
1723 This work was sponsored by Intel.
1726 *) Add GCM support to TLS library. Some custom code is needed to split
1727 the IV between the fixed (from PRF) and explicit (from TLS record)
1728 portions. This adds all GCM ciphersuites supported by RFC5288 and
1729 RFC5289. Generalise some AES* cipherstrings to include GCM and
1730 add a special AESGCM string for GCM only.
1733 *) Expand range of ctrls for AES GCM. Permit setting invocation
1734 field on decrypt and retrieval of invocation field only on encrypt.
1737 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
1738 As required by RFC5289 these ciphersuites cannot be used if for
1739 versions of TLS earlier than 1.2.
1742 *) For FIPS capable OpenSSL interpret a NULL default public key method
1743 as unset and return the appropriate default but do *not* set the default.
1744 This means we can return the appropriate method in applications that
1745 switch between FIPS and non-FIPS modes.
1748 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
1749 ENGINE is used then we cannot handle that in the FIPS module so we
1750 keep original code iff non-FIPS operations are allowed.
1753 *) Add -attime option to openssl utilities.
1754 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
1756 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
1759 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
1760 FIPS EC methods unconditionally for now.
1763 *) New build option no-ec2m to disable characteristic 2 code.
1766 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
1767 all cases can be covered as some introduce binary incompatibilities.
1770 *) Redirect RSA operations to FIPS module including keygen,
1771 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
1774 *) Add similar low level API blocking to ciphers.
1777 *) Low level digest APIs are not approved in FIPS mode: any attempt
1778 to use these will cause a fatal error. Applications that *really* want
1779 to use them can use the private_* version instead.
1782 *) Redirect cipher operations to FIPS module for FIPS builds.
1785 *) Redirect digest operations to FIPS module for FIPS builds.
1788 *) Update build system to add "fips" flag which will link in fipscanister.o
1789 for static and shared library builds embedding a signature if needed.
1792 *) Output TLS supported curves in preference order instead of numerical
1793 order. This is currently hardcoded for the highest order curves first.
1794 This should be configurable so applications can judge speed vs strength.
1797 *) Add TLS v1.2 server support for client authentication.
1800 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
1804 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
1805 FIPS modules versions.
1808 *) Add TLS v1.2 client side support for client authentication. Keep cache
1809 of handshake records longer as we don't know the hash algorithm to use
1810 until after the certificate request message is received.
1813 *) Initial TLS v1.2 client support. Add a default signature algorithms
1814 extension including all the algorithms we support. Parse new signature
1815 format in client key exchange. Relax some ECC signing restrictions for
1816 TLS v1.2 as indicated in RFC5246.
1819 *) Add server support for TLS v1.2 signature algorithms extension. Switch
1820 to new signature format when needed using client digest preference.
1821 All server ciphersuites should now work correctly in TLS v1.2. No client
1822 support yet and no support for client certificates.
1825 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
1826 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
1827 ciphersuites. At present only RSA key exchange ciphersuites work with
1828 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
1829 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
1830 and version checking.
1833 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
1834 with this defined it will not be affected by any changes to ssl internal
1835 structures. Add several utility functions to allow openssl application
1836 to work with OPENSSL_NO_SSL_INTERN defined.
1840 [Tom Wu <tjw@cs.stanford.edu> and Ben Laurie]
1842 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
1845 *) Permit abbreviated handshakes when renegotiating using the function
1846 SSL_renegotiate_abbreviated().
1847 [Robin Seggelmann <seggelmann@fh-muenster.de>]
1849 *) Add call to ENGINE_register_all_complete() to
1850 ENGINE_load_builtin_engines(), so some implementations get used
1851 automatically instead of needing explicit application support.
1854 *) Add support for TLS key exporter as described in RFC5705.
1855 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
1857 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
1858 a few changes are required:
1860 Add SSL_OP_NO_TLSv1_1 flag.
1861 Add TLSv1_1 methods.
1862 Update version checking logic to handle version 1.1.
1863 Add explicit IV handling (ported from DTLS code).
1864 Add command line options to s_client/s_server.
1867 Changes between 1.0.0g and 1.0.0h [12 Mar 2012]
1869 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
1870 in CMS and PKCS7 code. When RSA decryption fails use a random key for
1871 content decryption and always return the same error. Note: this attack
1872 needs on average 2^20 messages so it only affects automated senders. The
1873 old behaviour can be reenabled in the CMS code by setting the
1874 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
1875 an MMA defence is not necessary.
1876 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
1877 this issue. (CVE-2012-0884)
1880 *) Fix CVE-2011-4619: make sure we really are receiving a
1881 client hello before rejecting multiple SGC restarts. Thanks to
1882 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
1885 Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
1887 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
1888 Thanks to Antonio Martin, Enterprise Secure Access Research and
1889 Development, Cisco Systems, Inc. for discovering this bug and
1890 preparing a fix. (CVE-2012-0050)
1893 Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
1895 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
1896 of the Vaudenay padding oracle attack on CBC mode encryption
1897 which enables an efficient plaintext recovery attack against
1898 the OpenSSL implementation of DTLS. Their attack exploits timing
1899 differences arising during decryption processing. A research
1900 paper describing this attack can be found at:
1901 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
1902 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
1903 Security Group at Royal Holloway, University of London
1904 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
1905 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
1906 for preparing the fix. (CVE-2011-4108)
1907 [Robin Seggelmann, Michael Tuexen]
1909 *) Clear bytes used for block padding of SSL 3.0 records.
1911 [Adam Langley (Google)]
1913 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
1914 Kadianakis <desnacked@gmail.com> for discovering this issue and
1915 Adam Langley for preparing the fix. (CVE-2011-4619)
1916 [Adam Langley (Google)]
1918 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
1919 [Andrey Kulikov <amdeich@gmail.com>]
1921 *) Prevent malformed RFC3779 data triggering an assertion failure.
1922 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
1923 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
1924 [Rob Austein <sra@hactrn.net>]
1926 *) Improved PRNG seeding for VOS.
1927 [Paul Green <Paul.Green@stratus.com>]
1929 *) Fix ssl_ciph.c set-up race.
1930 [Adam Langley (Google)]
1932 *) Fix spurious failures in ecdsatest.c.
1933 [Emilia Käsper (Google)]
1935 *) Fix the BIO_f_buffer() implementation (which was mixing different
1936 interpretations of the '..._len' fields).
1937 [Adam Langley (Google)]
1939 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
1940 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
1941 threads won't reuse the same blinding coefficients.
1943 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
1944 lock to call BN_BLINDING_invert_ex, and avoids one use of
1945 BN_BLINDING_update for each BN_BLINDING structure (previously,
1946 the last update always remained unused).
1947 [Emilia Käsper (Google)]
1949 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
1950 [Bob Buckholz (Google)]
1952 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
1954 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
1955 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
1956 [Kaspar Brand <ossl@velox.ch>]
1958 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
1959 for multi-threaded use of ECDH. (CVE-2011-3210)
1960 [Adam Langley (Google)]
1962 *) Fix x509_name_ex_d2i memory leak on bad inputs.
1965 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
1966 signature public key algorithm by using OID xref utilities instead.
1967 Before this you could only use some ECC ciphersuites with SHA1 only.
1970 *) Add protection against ECDSA timing attacks as mentioned in the paper
1971 by Billy Bob Brumley and Nicola Tuveri, see:
1973 http://eprint.iacr.org/2011/232.pdf
1975 [Billy Bob Brumley and Nicola Tuveri]
1977 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
1979 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
1980 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
1982 *) Fix bug in string printing code: if *any* escaping is enabled we must
1983 escape the escape character (backslash) or the resulting string is
1987 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
1989 *) Disable code workaround for ancient and obsolete Netscape browsers
1990 and servers: an attacker can use it in a ciphersuite downgrade attack.
1991 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
1994 *) Fixed J-PAKE implementation error, originally discovered by
1995 Sebastien Martini, further info and confirmation from Stefan
1996 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
1999 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
2001 *) Fix extension code to avoid race conditions which can result in a buffer
2002 overrun vulnerability: resumed sessions must not be modified as they can
2003 be shared by multiple threads. CVE-2010-3864
2006 *) Fix WIN32 build system to correctly link an ENGINE directory into
2010 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
2012 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
2014 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
2016 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
2018 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
2019 context. The operation can be customised via the ctrl mechanism in
2020 case ENGINEs want to include additional functionality.
2023 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
2026 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
2027 output hashes compatible with older versions of OpenSSL.
2028 [Willy Weisz <weisz@vcpc.univie.ac.at>]
2030 *) Fix compression algorithm handling: if resuming a session use the
2031 compression algorithm of the resumed session instead of determining
2032 it from client hello again. Don't allow server to change algorithm.
2035 *) Add load_crls() function to apps tidying load_certs() too. Add option
2036 to verify utility to allow additional CRLs to be included.
2039 *) Update OCSP request code to permit adding custom headers to the request:
2040 some responders need this.
2043 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
2045 [Julia Lawall <julia@diku.dk>]
2047 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
2048 needlessly dereferenced structures, used obsolete functions and
2049 didn't handle all updated verify codes correctly.
2052 *) Disable MD2 in the default configuration.
2055 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
2056 indicate the initial BIO being pushed or popped. This makes it possible
2057 to determine whether the BIO is the one explicitly called or as a result
2058 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
2059 it handles reference counts correctly and doesn't zero out the I/O bio
2060 when it is not being explicitly popped. WARNING: applications which
2061 included workarounds for the old buggy behaviour will need to be modified
2062 or they could free up already freed BIOs.
2065 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
2066 renaming to all platforms (within the 0.9.8 branch, this was
2067 done conditionally on Netware platforms to avoid a name clash).
2068 [Guenter <lists@gknw.net>]
2070 *) Add ECDHE and PSK support to DTLS.
2071 [Michael Tuexen <tuexen@fh-muenster.de>]
2073 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
2077 *) Add "missing" function EVP_MD_flags() (without this the only way to
2078 retrieve a digest flags is by accessing the structure directly. Update
2079 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
2080 or cipher is registered as in the "from" argument. Print out all
2081 registered digests in the dgst usage message instead of manually
2082 attempting to work them out.
2085 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
2086 this allows the use of compression and extensions. Change default cipher
2087 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
2088 by default unless an application cipher string requests it.
2091 *) Alter match criteria in PKCS12_parse(). It used to try to use local
2092 key ids to find matching certificates and keys but some PKCS#12 files
2093 don't follow the (somewhat unwritten) rules and this strategy fails.
2094 Now just gather all certificates together and the first private key
2095 then look for the first certificate that matches the key.
2098 *) Support use of registered digest and cipher names for dgst and cipher
2099 commands instead of having to add each one as a special case. So now
2106 openssl dgst -sha256 foo
2108 and this works for ENGINE based algorithms too.
2112 *) Update Gost ENGINE to support parameter files.
2113 [Victor B. Wagner <vitus@cryptocom.ru>]
2115 *) Support GeneralizedTime in ca utility.
2116 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
2118 *) Enhance the hash format used for certificate directory links. The new
2119 form uses the canonical encoding (meaning equivalent names will work
2120 even if they aren't identical) and uses SHA1 instead of MD5. This form
2121 is incompatible with the older format and as a result c_rehash should
2122 be used to rebuild symbolic links.
2125 *) Make PKCS#8 the default write format for private keys, replacing the
2126 traditional format. This form is standardised, more secure and doesn't
2127 include an implicit MD5 dependency.
2130 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
2131 committed to OpenSSL should pass this lot as a minimum.
2134 *) Add session ticket override functionality for use by EAP-FAST.
2135 [Jouni Malinen <j@w1.fi>]
2137 *) Modify HMAC functions to return a value. Since these can be implemented
2138 in an ENGINE errors can occur.
2141 *) Type-checked OBJ_bsearch_ex.
2144 *) Type-checked OBJ_bsearch. Also some constification necessitated
2145 by type-checking. Still to come: TXT_DB, bsearch(?),
2146 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
2150 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
2151 seconds to a tm structure directly, instead of going through OS
2152 specific date routines. This avoids any issues with OS routines such
2153 as the year 2038 bug. New *_adj() functions for ASN1 time structures
2154 and X509_time_adj_ex() to cover the extended range. The existing
2155 X509_time_adj() is still usable and will no longer have any date issues.
2158 *) Delta CRL support. New use deltas option which will attempt to locate
2159 and search any appropriate delta CRLs available.
2161 This work was sponsored by Google.
2164 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
2165 code and add additional score elements. Validate alternate CRL paths
2166 as part of the CRL checking and indicate a new error "CRL path validation
2167 error" in this case. Applications wanting additional details can use
2168 the verify callback and check the new "parent" field. If this is not
2169 NULL CRL path validation is taking place. Existing applications wont
2170 see this because it requires extended CRL support which is off by
2173 This work was sponsored by Google.
2176 *) Support for freshest CRL extension.
2178 This work was sponsored by Google.
2181 *) Initial indirect CRL support. Currently only supported in the CRLs
2182 passed directly and not via lookup. Process certificate issuer
2183 CRL entry extension and lookup CRL entries by bother issuer name
2184 and serial number. Check and process CRL issuer entry in IDP extension.
2186 This work was sponsored by Google.
2189 *) Add support for distinct certificate and CRL paths. The CRL issuer
2190 certificate is validated separately in this case. Only enabled if
2191 an extended CRL support flag is set: this flag will enable additional
2192 CRL functionality in future.
2194 This work was sponsored by Google.
2197 *) Add support for policy mappings extension.
2199 This work was sponsored by Google.
2202 *) Fixes to pathlength constraint, self issued certificate handling,
2203 policy processing to align with RFC3280 and PKITS tests.
2205 This work was sponsored by Google.
2208 *) Support for name constraints certificate extension. DN, email, DNS
2209 and URI types are currently supported.
2211 This work was sponsored by Google.
2214 *) To cater for systems that provide a pointer-based thread ID rather
2215 than numeric, deprecate the current numeric thread ID mechanism and
2216 replace it with a structure and associated callback type. This
2217 mechanism allows a numeric "hash" to be extracted from a thread ID in
2218 either case, and on platforms where pointers are larger than 'long',
2219 mixing is done to help ensure the numeric 'hash' is usable even if it
2220 can't be guaranteed unique. The default mechanism is to use "&errno"
2221 as a pointer-based thread ID to distinguish between threads.
2223 Applications that want to provide their own thread IDs should now use
2224 CRYPTO_THREADID_set_callback() to register a callback that will call
2225 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
2227 Note that ERR_remove_state() is now deprecated, because it is tied
2228 to the assumption that thread IDs are numeric. ERR_remove_state(0)
2229 to free the current thread's error state should be replaced by
2230 ERR_remove_thread_state(NULL).
2232 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
2233 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
2234 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
2235 application was previously providing a numeric thread callback that
2236 was inappropriate for distinguishing threads, then uniqueness might
2237 have been obtained with &errno that happened immediately in the
2238 intermediate development versions of OpenSSL; this is no longer the
2239 case, the numeric thread callback will now override the automatic use
2241 [Geoff Thorpe, with help from Bodo Moeller]
2243 *) Initial support for different CRL issuing certificates. This covers a
2244 simple case where the self issued certificates in the chain exist and
2245 the real CRL issuer is higher in the existing chain.
2247 This work was sponsored by Google.
2250 *) Removed effectively defunct crypto/store from the build.
2253 *) Revamp of STACK to provide stronger type-checking. Still to come:
2254 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
2255 ASN1_STRING, CONF_VALUE.
2258 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
2259 RAM on SSL connections. This option can save about 34k per idle SSL.
2262 *) Revamp of LHASH to provide stronger type-checking. Still to come:
2263 STACK, TXT_DB, bsearch, qsort.
2266 *) Initial support for Cryptographic Message Syntax (aka CMS) based
2267 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
2268 support for data, signedData, compressedData, digestedData and
2269 encryptedData, envelopedData types included. Scripts to check against
2270 RFC4134 examples draft and interop and consistency checks of many
2271 content types and variants.
2274 *) Add options to enc utility to support use of zlib compression BIO.
2277 *) Extend mk1mf to support importing of options and assembly language
2278 files from Configure script, currently only included in VC-WIN32.
2279 The assembly language rules can now optionally generate the source
2280 files from the associated perl scripts.
2283 *) Implement remaining functionality needed to support GOST ciphersuites.
2284 Interop testing has been performed using CryptoPro implementations.
2285 [Victor B. Wagner <vitus@cryptocom.ru>]
2287 *) s390x assembler pack.
2290 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
2294 *) Implement Opaque PRF Input TLS extension as specified in
2295 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
2296 official specification yet and no extension type assignment by
2297 IANA exists, this extension (for now) will have to be explicitly
2298 enabled when building OpenSSL by providing the extension number
2299 to use. For example, specify an option
2301 -DTLSEXT_TYPE_opaque_prf_input=0x9527
2303 to the "config" or "Configure" script to enable the extension,
2304 assuming extension number 0x9527 (which is a completely arbitrary
2305 and unofficial assignment based on the MD5 hash of the Internet
2306 Draft). Note that by doing so, you potentially lose
2307 interoperability with other TLS implementations since these might
2308 be using the same extension number for other purposes.
2310 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
2311 opaque PRF input value to use in the handshake. This will create
2312 an interal copy of the length-'len' string at 'src', and will
2313 return non-zero for success.
2315 To get more control and flexibility, provide a callback function
2318 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
2319 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
2323 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
2326 Callback function 'cb' will be called in handshakes, and is
2327 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
2328 Argument 'arg' is for application purposes (the value as given to
2329 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
2330 be provided to the callback function). The callback function
2331 has to return non-zero to report success: usually 1 to use opaque
2332 PRF input just if possible, or 2 to enforce use of the opaque PRF
2333 input. In the latter case, the library will abort the handshake
2334 if opaque PRF input is not successfully negotiated.
2336 Arguments 'peerinput' and 'len' given to the callback function
2337 will always be NULL and 0 in the case of a client. A server will
2338 see the client's opaque PRF input through these variables if
2339 available (NULL and 0 otherwise). Note that if the server
2340 provides an opaque PRF input, the length must be the same as the
2341 length of the client's opaque PRF input.
2343 Note that the callback function will only be called when creating
2344 a new session (session resumption can resume whatever was
2345 previously negotiated), and will not be called in SSL 2.0
2346 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
2347 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
2348 for applications that need to enforce opaque PRF input.
2352 *) Update ssl code to support digests other than SHA1+MD5 for handshake
2355 [Victor B. Wagner <vitus@cryptocom.ru>]
2357 *) Add RFC4507 support to OpenSSL. This includes the corrections in
2358 RFC4507bis. The encrypted ticket format is an encrypted encoded
2359 SSL_SESSION structure, that way new session features are automatically
2362 If a client application caches session in an SSL_SESSION structure
2363 support is transparent because tickets are now stored in the encoded
2366 The SSL_CTX structure automatically generates keys for ticket
2367 protection in servers so again support should be possible
2368 with no application modification.
2370 If a client or server wishes to disable RFC4507 support then the option
2371 SSL_OP_NO_TICKET can be set.
2373 Add a TLS extension debugging callback to allow the contents of any client
2374 or server extensions to be examined.
2376 This work was sponsored by Google.
2379 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
2380 OpenSSL should now compile cleanly on gcc 4.2
2381 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
2383 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
2384 support including streaming MAC support: this is required for GOST
2385 ciphersuite support.
2386 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
2388 *) Add option -stream to use PKCS#7 streaming in smime utility. New
2389 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
2390 to output in BER and PEM format.
2393 *) Experimental support for use of HMAC via EVP_PKEY interface. This
2394 allows HMAC to be handled via the EVP_DigestSign*() interface. The
2395 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
2396 ENGINE support for HMAC keys which are unextractable. New -mac and
2397 -macopt options to dgst utility.
2400 *) New option -sigopt to dgst utility. Update dgst to use
2401 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
2402 alternative signing paramaters such as X9.31 or PSS in the dgst
2406 *) Change ssl_cipher_apply_rule(), the internal function that does
2407 the work each time a ciphersuite string requests enabling
2408 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
2409 removing ("!foo+bar") a class of ciphersuites: Now it maintains
2410 the order of disabled ciphersuites such that those ciphersuites
2411 that most recently went from enabled to disabled not only stay
2412 in order with respect to each other, but also have higher priority
2413 than other disabled ciphersuites the next time ciphersuites are
2416 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
2417 the same ciphersuites as with "HIGH" alone, but in a specific
2418 order where the PSK ciphersuites come first (since they are the
2419 most recently disabled ciphersuites when "HIGH" is parsed).
2421 Also, change ssl_create_cipher_list() (using this new
2422 funcionality) such that between otherwise identical
2423 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
2427 *) Change ssl_create_cipher_list() so that it automatically
2428 arranges the ciphersuites in reasonable order before starting
2429 to process the rule string. Thus, the definition for "DEFAULT"
2430 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
2431 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
2432 This makes it much easier to arrive at a reasonable default order
2433 in applications for which anonymous ciphers are OK (meaning
2434 that you can't actually use DEFAULT).
2435 [Bodo Moeller; suggested by Victor Duchovni]
2437 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
2438 processing) into multiple integers instead of setting
2439 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
2440 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
2441 (These masks as well as the individual bit definitions are hidden
2442 away into the non-exported interface ssl/ssl_locl.h, so this
2443 change to the definition of the SSL_CIPHER structure shouldn't
2444 affect applications.) This give us more bits for each of these
2445 categories, so there is no longer a need to coagulate AES128 and
2446 AES256 into a single algorithm bit, and to coagulate Camellia128
2447 and Camellia256 into a single algorithm bit, which has led to all
2450 Thus, among other things, the kludge introduced in 0.9.7m and
2451 0.9.8e for masking out AES256 independently of AES128 or masking
2452 out Camellia256 independently of AES256 is not needed here in 0.9.9.
2454 With the change, we also introduce new ciphersuite aliases that
2455 so far were missing: "AES128", "AES256", "CAMELLIA128", and
2459 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
2460 Use the leftmost N bytes of the signature input if the input is
2461 larger than the prime q (with N being the size in bytes of q).
2464 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
2465 it yet and it is largely untested.
2468 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
2471 *) Initial incomplete changes to avoid need for function casts in OpenSSL
2472 some compilers (gcc 4.2 and later) reject their use. Safestack is
2473 reimplemented. Update ASN1 to avoid use of legacy functions.
2476 *) Win32/64 targets are linked with Winsock2.
2479 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
2480 to external functions. This can be used to increase CRL handling
2481 efficiency especially when CRLs are very large by (for example) storing
2482 the CRL revoked certificates in a database.
2485 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
2486 new CRLs added to a directory can be used. New command line option
2487 -verify_return_error to s_client and s_server. This causes real errors
2488 to be returned by the verify callback instead of carrying on no matter
2489 what. This reflects the way a "real world" verify callback would behave.
2492 *) GOST engine, supporting several GOST algorithms and public key formats.
2493 Kindly donated by Cryptocom.
2496 *) Partial support for Issuing Distribution Point CRL extension. CRLs
2497 partitioned by DP are handled but no indirect CRL or reason partitioning
2498 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
2499 selected via a scoring technique which handles IDP and AKID in CRLs.
2502 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
2503 will ultimately be used for all verify operations: this will remove the
2504 X509_STORE dependency on certificate verification and allow alternative
2505 lookup methods. X509_STORE based implementations of these two callbacks.
2508 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
2509 Modify get_crl() to find a valid (unexpired) CRL if possible.
2512 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
2513 this would be called X509_CRL_cmp() but that name is already used by
2514 a function that just compares CRL issuer names. Cache several CRL
2515 extensions in X509_CRL structure and cache CRLDP in X509.
2518 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
2519 this maps equivalent X509_NAME structures into a consistent structure.
2520 Name comparison can then be performed rapidly using memcmp().
2523 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
2527 *) Allow digests to supply their own micalg string for S/MIME type using
2528 the ctrl EVP_MD_CTRL_MICALG.
2531 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
2532 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
2533 ctrl. It can then customise the structure before and/or after signing
2537 *) New function OBJ_add_sigid() to allow application defined signature OIDs
2538 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
2539 to free up any added signature OIDs.
2542 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
2543 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
2544 digest and cipher tables. New options added to openssl utility:
2545 list-message-digest-algorithms and list-cipher-algorithms.
2548 *) Change the array representation of binary polynomials: the list
2549 of degrees of non-zero coefficients is now terminated with -1.
2550 Previously it was terminated with 0, which was also part of the
2551 value; thus, the array representation was not applicable to
2552 polynomials where t^0 has coefficient zero. This change makes
2553 the array representation useful in a more general context.
2556 *) Various modifications and fixes to SSL/TLS cipher string
2557 handling. For ECC, the code now distinguishes between fixed ECDH
2558 with RSA certificates on the one hand and with ECDSA certificates
2559 on the other hand, since these are separate ciphersuites. The
2560 unused code for Fortezza ciphersuites has been removed.
2562 For consistency with EDH, ephemeral ECDH is now called "EECDH"
2563 (not "ECDHE"). For consistency with the code for DH
2564 certificates, use of ECDH certificates is now considered ECDH
2565 authentication, not RSA or ECDSA authentication (the latter is
2566 merely the CA's signing algorithm and not actively used in the
2569 The temporary ciphersuite alias "ECCdraft" is no longer
2570 available, and ECC ciphersuites are no longer excluded from "ALL"
2571 and "DEFAULT". The following aliases now exist for RFC 4492
2572 ciphersuites, most of these by analogy with the DH case:
2574 kECDHr - ECDH cert, signed with RSA
2575 kECDHe - ECDH cert, signed with ECDSA
2576 kECDH - ECDH cert (signed with either RSA or ECDSA)
2577 kEECDH - ephemeral ECDH
2578 ECDH - ECDH cert or ephemeral ECDH
2584 AECDH - anonymous ECDH
2585 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
2589 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
2590 Use correct micalg parameters depending on digest(s) in signed message.
2593 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
2594 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
2597 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
2598 an engine to register a method. Add ENGINE lookups for methods and
2599 functional reference processing.
2602 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
2603 EVP_{Sign,Verify}* which allow an application to customise the signature
2607 *) New -resign option to smime utility. This adds one or more signers
2608 to an existing PKCS#7 signedData structure. Also -md option to use an
2609 alternative message digest algorithm for signing.
2612 *) Tidy up PKCS#7 routines and add new functions to make it easier to
2613 create PKCS7 structures containing multiple signers. Update smime
2614 application to support multiple signers.
2617 *) New -macalg option to pkcs12 utility to allow setting of an alternative
2621 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
2622 Reorganize PBE internals to lookup from a static table using NIDs,
2623 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
2624 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
2625 PRF which will be automatically used with PBES2.
2628 *) Replace the algorithm specific calls to generate keys in "req" with the
2632 *) Update PKCS#7 enveloped data routines to use new API. This is now
2633 supported by any public key method supporting the encrypt operation. A
2634 ctrl is added to allow the public key algorithm to examine or modify
2635 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
2639 *) Add a ctrl to asn1 method to allow a public key algorithm to express
2640 a default digest type to use. In most cases this will be SHA1 but some
2641 algorithms (such as GOST) need to specify an alternative digest. The
2642 return value indicates how strong the preference is 1 means optional and
2643 2 is mandatory (that is it is the only supported type). Modify
2644 ASN1_item_sign() to accept a NULL digest argument to indicate it should
2645 use the default md. Update openssl utilities to use the default digest
2646 type for signing if it is not explicitly indicated.
2649 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
2650 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
2651 signing method from the key type. This effectively removes the link
2652 between digests and public key types.
2655 *) Add an OID cross reference table and utility functions. Its purpose is to
2656 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
2657 rsaEncryption. This will allow some of the algorithm specific hackery
2658 needed to use the correct OID to be removed.
2661 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
2662 structures for PKCS7_sign(). They are now set up by the relevant public
2666 *) Add provisional EC pkey method with support for ECDSA and ECDH.
2669 *) Add support for key derivation (agreement) in the API, DH method and
2673 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
2674 public and private key formats. As a side effect these add additional
2675 command line functionality not previously available: DSA signatures can be
2676 generated and verified using pkeyutl and DH key support and generation in
2681 [Oliver Tappe <zooey@hirschkaefer.de>]
2683 *) New make target "install_html_docs" installs HTML renditions of the
2685 [Oliver Tappe <zooey@hirschkaefer.de>]
2687 *) New utility "genpkey" this is analogous to "genrsa" etc except it can
2688 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
2689 support key and parameter generation and add initial key generation
2690 functionality for RSA.
2693 *) Add functions for main EVP_PKEY_method operations. The undocumented
2694 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
2695 EVP_PKEY_{encrypt,decrypt}_old.
2698 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
2699 key API, doesn't do much yet.
2702 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
2703 public key algorithms. New option to openssl utility:
2704 "list-public-key-algorithms" to print out info.
2707 *) Implement the Supported Elliptic Curves Extension for
2708 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
2711 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
2712 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
2715 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
2716 utilities such as rsa, dsa, dsaparam etc except they process any key
2720 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
2721 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
2722 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
2726 *) Initial support for pluggable public key ASN1.
2727 De-spaghettify the public key ASN1 handling. Move public and private
2728 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
2729 algorithm specific handling to a single module within the relevant
2730 algorithm directory. Add functions to allow (near) opaque processing
2731 of public and private key structures.
2734 *) Implement the Supported Point Formats Extension for
2735 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
2738 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
2739 for the psk identity [hint] and the psk callback functions to the
2740 SSL_SESSION, SSL and SSL_CTX structure.
2743 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
2747 SSL_CTX_use_psk_identity_hint
2748 SSL_get_psk_identity_hint
2749 SSL_get_psk_identity
2750 SSL_use_psk_identity_hint
2752 [Mika Kousa and Pasi Eronen of Nokia Corporation]
2754 *) Add RFC 3161 compliant time stamp request creation, response generation
2755 and response verification functionality.
2756 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
2758 *) Add initial support for TLS extensions, specifically for the server_name
2759 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
2760 have new members for a host name. The SSL data structure has an
2761 additional member SSL_CTX *initial_ctx so that new sessions can be
2762 stored in that context to allow for session resumption, even after the
2763 SSL has been switched to a new SSL_CTX in reaction to a client's
2764 server_name extension.
2766 New functions (subject to change):
2768 SSL_get_servername()
2769 SSL_get_servername_type()
2772 New CTRL codes and macros (subject to change):
2774 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
2775 - SSL_CTX_set_tlsext_servername_callback()
2776 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
2777 - SSL_CTX_set_tlsext_servername_arg()
2778 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
2780 openssl s_client has a new '-servername ...' option.
2782 openssl s_server has new options '-servername_host ...', '-cert2 ...',
2783 '-key2 ...', '-servername_fatal' (subject to change). This allows
2784 testing the HostName extension for a specific single host name ('-cert'
2785 and '-key' remain fallbacks for handshakes without HostName
2786 negotiation). If the unrecognized_name alert has to be sent, this by
2787 default is a warning; it becomes fatal with the '-servername_fatal'
2790 [Peter Sylvester, Remy Allais, Christophe Renou]
2792 *) Whirlpool hash implementation is added.
2795 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
2796 bn(64,32). Because of instruction set limitations it doesn't have
2797 any negative impact on performance. This was done mostly in order
2798 to make it possible to share assembler modules, such as bn_mul_mont
2799 implementations, between 32- and 64-bit builds without hassle.
2802 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
2803 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
2807 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
2808 dedicated Montgomery multiplication procedure, is introduced.
2809 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
2810 "64-bit" performance on certain 32-bit targets.
2813 *) New option SSL_OP_NO_COMP to disable use of compression selectively
2814 in SSL structures. New SSL ctrl to set maximum send fragment size.
2815 Save memory by seeting the I/O buffer sizes dynamically instead of
2816 using the maximum available value.
2819 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
2820 in addition to the text details.
2823 *) Very, very preliminary EXPERIMENTAL support for printing of general
2824 ASN1 structures. This currently produces rather ugly output and doesn't
2825 handle several customised structures at all.
2828 *) Integrated support for PVK file format and some related formats such
2829 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
2830 these in the 'rsa' and 'dsa' utilities.
2833 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
2836 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
2837 place for the (very old) "NETSCAPE" format certificates which are now
2838 handled using new ASN1 code equivalents.
2841 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
2842 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
2843 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
2846 *) Modify CRL distribution points extension code to print out previously
2847 unsupported fields. Enhance extension setting code to allow setting of
2851 *) Add print and set support for Issuing Distribution Point CRL extension.
2854 *) Change 'Configure' script to enable Camellia by default.
2857 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
2859 *) When rejecting SSL/TLS records due to an incorrect version number, never
2860 update s->server with a new major version number. As of
2861 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
2862 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
2863 the previous behavior could result in a read attempt at NULL when
2864 receiving specific incorrect SSL/TLS records once record payload
2865 protection is active. (CVE-2010-0740)
2866 [Bodo Moeller, Adam Langley <agl@chromium.org>]
2868 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
2869 could be crashed if the relevant tables were not present (e.g. chrooted).
2870 [Tomas Hoger <thoger@redhat.com>]
2872 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
2874 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
2875 [Martin Olsson, Neel Mehta]
2877 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
2878 accommodate for stack sorting, always a write lock!).
2881 *) On some versions of WIN32 Heap32Next is very slow. This can cause
2882 excessive delays in the RAND_poll(): over a minute. As a workaround
2883 include a time check in the inner Heap32Next loop too.
2886 *) The code that handled flushing of data in SSL/TLS originally used the
2887 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
2888 the problem outlined in PR#1949. The fix suggested there however can
2889 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
2890 of Apache). So instead simplify the code to flush unconditionally.
2891 This should be fine since flushing with no data to flush is a no op.
2894 *) Handle TLS versions 2.0 and later properly and correctly use the
2895 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
2896 off ancient servers have a habit of sticking around for a while...
2899 *) Modify compression code so it frees up structures without using the
2900 ex_data callbacks. This works around a problem where some applications
2901 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
2902 restarting) then use compression (e.g. SSL with compression) later.
2903 This results in significant per-connection memory leaks and
2904 has caused some security issues including CVE-2008-1678 and
2908 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
2909 change when encrypting or decrypting.
2912 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
2913 connect and renegotiate with servers which do not support RI.
2914 Until RI is more widely deployed this option is enabled by default.
2917 *) Add "missing" ssl ctrls to clear options and mode.
2920 *) If client attempts to renegotiate and doesn't support RI respond with
2921 a no_renegotiation alert as required by RFC5746. Some renegotiating
2922 TLS clients will continue a connection gracefully when they receive
2923 the alert. Unfortunately OpenSSL mishandled this alert and would hang
2924 waiting for a server hello which it will never receive. Now we treat a
2925 received no_renegotiation alert as a fatal error. This is because
2926 applications requesting a renegotiation might well expect it to succeed
2927 and would have no code in place to handle the server denying it so the
2928 only safe thing to do is to terminate the connection.
2931 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
2932 peer supports secure renegotiation and 0 otherwise. Print out peer
2933 renegotiation support in s_client/s_server.
2936 *) Replace the highly broken and deprecated SPKAC certification method with
2937 the updated NID creation version. This should correctly handle UTF8.
2940 *) Implement RFC5746. Re-enable renegotiation but require the extension
2941 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
2942 turns out to be a bad idea. It has been replaced by
2943 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
2944 SSL_CTX_set_options(). This is really not recommended unless you
2945 know what you are doing.
2946 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
2948 *) Fixes to stateless session resumption handling. Use initial_ctx when
2949 issuing and attempting to decrypt tickets in case it has changed during
2950 servername handling. Use a non-zero length session ID when attempting
2951 stateless session resumption: this makes it possible to determine if
2952 a resumption has occurred immediately after receiving server hello
2953 (several places in OpenSSL subtly assume this) instead of later in
2957 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
2958 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
2959 fixes for a few places where the return code is not checked
2961 [Julia Lawall <julia@diku.dk>]
2963 *) Add --strict-warnings option to Configure script to include devteam
2964 warnings in other configurations.
2967 *) Add support for --libdir option and LIBDIR variable in makefiles. This
2968 makes it possible to install openssl libraries in locations which
2969 have names other than "lib", for example "/usr/lib64" which some
2971 [Steve Henson, based on patch from Jeremy Utley]
2973 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
2974 X690 8.9.12 and can produce some misleading textual output of OIDs.
2975 [Steve Henson, reported by Dan Kaminsky]
2977 *) Delete MD2 from algorithm tables. This follows the recommendation in
2978 several standards that it is not used in new applications due to
2979 several cryptographic weaknesses. For binary compatibility reasons
2980 the MD2 API is still compiled in by default.
2983 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
2987 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
2988 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
2990 [Guenter <lists@gknw.net>]
2992 *) Fix the server certificate chain building code to use X509_verify_cert(),
2993 it used to have an ad-hoc builder which was unable to cope with anything
2994 other than a simple chain.
2995 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
2997 *) Don't check self signed certificate signatures in X509_verify_cert()
2998 by default (a flag can override this): it just wastes time without
2999 adding any security. As a useful side effect self signed root CAs
3000 with non-FIPS digests are now usable in FIPS mode.
3003 *) In dtls1_process_out_of_seq_message() the check if the current message
3004 is already buffered was missing. For every new message was memory
3005 allocated, allowing an attacker to perform an denial of service attack
3006 with sending out of seq handshake messages until there is no memory
3007 left. Additionally every future messege was buffered, even if the
3008 sequence number made no sense and would be part of another handshake.
3009 So only messages with sequence numbers less than 10 in advance will be
3010 buffered. (CVE-2009-1378)
3011 [Robin Seggelmann, discovered by Daniel Mentz]
3013 *) Records are buffered if they arrive with a future epoch to be
3014 processed after finishing the corresponding handshake. There is
3015 currently no limitation to this buffer allowing an attacker to perform
3016 a DOS attack with sending records with future epochs until there is no
3017 memory left. This patch adds the pqueue_size() function to determine
3018 the size of a buffer and limits the record buffer to 100 entries.
3020 [Robin Seggelmann, discovered by Daniel Mentz]
3022 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
3023 parent structure is freed. (CVE-2009-1379)
3026 *) Handle non-blocking I/O properly in SSL_shutdown() call.
3027 [Darryl Miles <darryl-mailinglists@netbauds.net>]
3030 [Ilya O. <vrghost@gmail.com>]
3032 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
3034 *) Disable renegotiation completely - this fixes a severe security
3035 problem (CVE-2009-3555) at the cost of breaking all
3036 renegotiation. Renegotiation can be re-enabled by setting
3037 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
3038 run-time. This is really not recommended unless you know what
3042 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
3044 *) Don't set val to NULL when freeing up structures, it is freed up by
3045 underlying code. If sizeof(void *) > sizeof(long) this can result in
3046 zeroing past the valid field. (CVE-2009-0789)
3047 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
3049 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
3050 checked correctly. This would allow some invalid signed attributes to
3051 appear to verify correctly. (CVE-2009-0591)
3052 [Ivan Nestlerode <inestlerode@us.ibm.com>]
3054 *) Reject UniversalString and BMPString types with invalid lengths. This
3055 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
3056 a legal length. (CVE-2009-0590)
3059 *) Set S/MIME signing as the default purpose rather than setting it
3060 unconditionally. This allows applications to override it at the store
3064 *) Permit restricted recursion of ASN1 strings. This is needed in practice
3065 to handle some structures.
3068 *) Improve efficiency of mem_gets: don't search whole buffer each time
3070 [Jeremy Shapiro <jnshapir@us.ibm.com>]
3072 *) New -hex option for openssl rand.
3075 *) Print out UTF8String and NumericString when parsing ASN1.
3078 *) Support NumericString type for name components.
3081 *) Allow CC in the environment to override the automatically chosen
3082 compiler. Note that nothing is done to ensure flags work with the
3086 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
3088 *) Properly check EVP_VerifyFinal() and similar return values
3090 [Ben Laurie, Bodo Moeller, Google Security Team]
3092 *) Enable TLS extensions by default.
3095 *) Allow the CHIL engine to be loaded, whether the application is
3096 multithreaded or not. (This does not release the developer from the
3097 obligation to set up the dynamic locking callbacks.)
3098 [Sander Temme <sander@temme.net>]
3100 *) Use correct exit code if there is an error in dgst command.
3101 [Steve Henson; problem pointed out by Roland Dirlewanger]
3103 *) Tweak Configure so that you need to say "experimental-jpake" to enable
3104 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
3107 *) Add experimental JPAKE support, including demo authentication in
3108 s_client and s_server.
3111 *) Set the comparison function in v3_addr_canonize().
3112 [Rob Austein <sra@hactrn.net>]
3114 *) Add support for XMPP STARTTLS in s_client.
3115 [Philip Paeps <philip@freebsd.org>]
3117 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
3118 to ensure that even with this option, only ciphersuites in the
3119 server's preference list will be accepted. (Note that the option
3120 applies only when resuming a session, so the earlier behavior was
3121 just about the algorithm choice for symmetric cryptography.)
3124 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
3126 *) Fix NULL pointer dereference if a DTLS server received
3127 ChangeCipherSpec as first record (CVE-2009-1386).
3130 *) Fix a state transition in s3_srvr.c and d1_srvr.c
3131 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
3134 *) The fix in 0.9.8c that supposedly got rid of unsafe
3135 double-checked locking was incomplete for RSA blinding,
3136 addressing just one layer of what turns out to have been
3137 doubly unsafe triple-checked locking.
3139 So now fix this for real by retiring the MONT_HELPER macro
3140 in crypto/rsa/rsa_eay.c.
3142 [Bodo Moeller; problem pointed out by Marius Schilder]
3144 *) Various precautionary measures:
3146 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
3148 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
3149 (NB: This would require knowledge of the secret session ticket key
3150 to exploit, in which case you'd be SOL either way.)
3152 - Change bn_nist.c so that it will properly handle input BIGNUMs
3153 outside the expected range.
3155 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
3158 [Neel Mehta, Bodo Moeller]
3160 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
3161 the load fails. Useful for distros.
3162 [Ben Laurie and the FreeBSD team]
3164 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
3167 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
3170 *) Expand ENGINE to support engine supplied SSL client certificate functions.
3172 This work was sponsored by Logica.
3175 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
3176 keystores. Support for SSL/TLS client authentication too.
3177 Not compiled unless enable-capieng specified to Configure.
3179 This work was sponsored by Logica.
3182 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
3183 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
3184 attribute creation routines such as certifcate requests and PKCS#12
3188 Changes between 0.9.8g and 0.9.8h [28 May 2008]
3190 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
3191 handshake which could lead to a cilent crash as found using the
3192 Codenomicon TLS test suite (CVE-2008-1672)
3193 [Steve Henson, Mark Cox]
3195 *) Fix double free in TLS server name extensions which could lead to
3196 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
3199 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
3201 Clear the error queue to ensure that error entries left from
3202 older function calls do not interfere with the correct operation.
3203 [Lutz Jaenicke, Erik de Castro Lopo]
3205 *) Remove root CA certificates of commercial CAs:
3207 The OpenSSL project does not recommend any specific CA and does not
3208 have any policy with respect to including or excluding any CA.
3209 Therefore it does not make any sense to ship an arbitrary selection
3210 of root CA certificates with the OpenSSL software.
3213 *) RSA OAEP patches to fix two separate invalid memory reads.
3214 The first one involves inputs when 'lzero' is greater than
3215 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
3216 before the beginning of from). The second one involves inputs where
3217 the 'db' section contains nothing but zeroes (there is a one-byte
3218 invalid read after the end of 'db').
3219 [Ivan Nestlerode <inestlerode@us.ibm.com>]
3221 *) Partial backport from 0.9.9-dev:
3223 Introduce bn_mul_mont (dedicated Montgomery multiplication
3224 procedure) as a candidate for BIGNUM assembler implementation.
3225 While 0.9.9-dev uses assembler for various architectures, only
3226 x86_64 is available by default here in the 0.9.8 branch, and
3227 32-bit x86 is available through a compile-time setting.
3229 To try the 32-bit x86 assembler implementation, use Configure
3230 option "enable-montasm" (which exists only for this backport).
3232 As "enable-montasm" for 32-bit x86 disclaims code stability
3233 anyway, in this constellation we activate additional code
3234 backported from 0.9.9-dev for further performance improvements,
3235 namely BN_from_montgomery_word. (To enable this otherwise,
3236 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
3238 [Andy Polyakov (backport partially by Bodo Moeller)]
3240 *) Add TLS session ticket callback. This allows an application to set
3241 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
3242 values. This is useful for key rollover for example where several key
3243 sets may exist with different names.
3246 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
3247 This was broken until now in 0.9.8 releases, such that the only way
3248 a registered ENGINE could be used (assuming it initialises
3249 successfully on the host) was to explicitly set it as the default
3250 for the relevant algorithms. This is in contradiction with 0.9.7
3251 behaviour and the documentation. With this fix, when an ENGINE is
3252 registered into a given algorithm's table of implementations, the
3253 'uptodate' flag is reset so that auto-discovery will be used next
3254 time a new context for that algorithm attempts to select an
3256 [Ian Lister (tweaked by Geoff Thorpe)]
3258 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
3259 implemention in the following ways:
3261 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
3264 Lack of BER streaming support means one pass streaming processing is
3265 only supported if data is detached: setting the streaming flag is
3266 ignored for embedded content.
3268 CMS support is disabled by default and must be explicitly enabled
3269 with the enable-cms configuration option.
3272 *) Update the GMP engine glue to do direct copies between BIGNUM and
3273 mpz_t when openssl and GMP use the same limb size. Otherwise the
3274 existing "conversion via a text string export" trick is still used.
3275 [Paul Sheer <paulsheer@gmail.com>]
3277 *) Zlib compression BIO. This is a filter BIO which compressed and
3278 uncompresses any data passed through it.
3281 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
3282 RFC3394 compatible AES key wrapping.
3285 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
3286 sets string data without copying. X509_ALGOR_set0() and
3287 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
3288 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
3289 from an X509_ATTRIBUTE structure optionally checking it occurs only
3290 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
3294 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
3295 to get the expected BN_FLG_CONSTTIME behavior.
3296 [Bodo Moeller (Google)]
3300 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
3301 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
3302 - added some more tests to do_tests.pl
3303 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
3304 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
3305 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
3306 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
3307 - various changes to netware.pl to enable gcc-cross builds on Win32
3309 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
3310 - various changes to fix missing prototype warnings
3311 - fixed x86nasm.pl to create correct asm files for NASM COFF output
3312 - added AES, WHIRLPOOL and CPUID assembler code to build files
3313 - added missing AES assembler make rules to mk1mf.pl
3314 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
3315 [Guenter Knauf <eflash@gmx.net>]
3317 *) Implement certificate status request TLS extension defined in RFC3546.
3318 A client can set the appropriate parameters and receive the encoded
3319 OCSP response via a callback. A server can query the supplied parameters
3320 and set the encoded OCSP response in the callback. Add simplified examples
3321 to s_client and s_server.
3324 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
3326 *) Fix various bugs:
3327 + Binary incompatibility of ssl_ctx_st structure
3328 + DTLS interoperation with non-compliant servers
3329 + Don't call get_session_cb() without proposed session
3330 + Fix ia64 assembler code
3331 [Andy Polyakov, Steve Henson]
3333 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
3335 *) DTLS Handshake overhaul. There were longstanding issues with
3336 OpenSSL DTLS implementation, which were making it impossible for
3337 RFC 4347 compliant client to communicate with OpenSSL server.
3338 Unfortunately just fixing these incompatibilities would "cut off"
3339 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
3340 server keeps tolerating non RFC compliant syntax. The opposite is
3341 not true, 0.9.8f client can not communicate with earlier server.
3342 This update even addresses CVE-2007-4995.
3345 *) Changes to avoid need for function casts in OpenSSL: some compilers
3346 (gcc 4.2 and later) reject their use.
3347 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
3350 *) Add RFC4507 support to OpenSSL. This includes the corrections in
3351 RFC4507bis. The encrypted ticket format is an encrypted encoded
3352 SSL_SESSION structure, that way new session features are automatically
3355 If a client application caches session in an SSL_SESSION structure
3356 support is transparent because tickets are now stored in the encoded
3359 The SSL_CTX structure automatically generates keys for ticket
3360 protection in servers so again support should be possible
3361 with no application modification.
3363 If a client or server wishes to disable RFC4507 support then the option
3364 SSL_OP_NO_TICKET can be set.
3366 Add a TLS extension debugging callback to allow the contents of any client
3367 or server extensions to be examined.
3369 This work was sponsored by Google.
3372 *) Add initial support for TLS extensions, specifically for the server_name
3373 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
3374 have new members for a host name. The SSL data structure has an
3375 additional member SSL_CTX *initial_ctx so that new sessions can be
3376 stored in that context to allow for session resumption, even after the
3377 SSL has been switched to a new SSL_CTX in reaction to a client's
3378 server_name extension.
3380 New functions (subject to change):
3382 SSL_get_servername()
3383 SSL_get_servername_type()
3386 New CTRL codes and macros (subject to change):
3388 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
3389 - SSL_CTX_set_tlsext_servername_callback()
3390 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
3391 - SSL_CTX_set_tlsext_servername_arg()
3392 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
3394 openssl s_client has a new '-servername ...' option.
3396 openssl s_server has new options '-servername_host ...', '-cert2 ...',
3397 '-key2 ...', '-servername_fatal' (subject to change). This allows
3398 testing the HostName extension for a specific single host name ('-cert'
3399 and '-key' remain fallbacks for handshakes without HostName
3400 negotiation). If the unrecognized_name alert has to be sent, this by
3401 default is a warning; it becomes fatal with the '-servername_fatal'
3404 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
3406 *) Add AES and SSE2 assembly language support to VC++ build.
3409 *) Mitigate attack on final subtraction in Montgomery reduction.
3412 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
3413 (which previously caused an internal error).
3416 *) Squeeze another 10% out of IGE mode when in != out.
3419 *) AES IGE mode speedup.
3420 [Dean Gaudet (Google)]
3422 *) Add the Korean symmetric 128-bit cipher SEED (see
3423 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
3424 add SEED ciphersuites from RFC 4162:
3426 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
3427 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
3428 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
3429 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
3431 To minimize changes between patchlevels in the OpenSSL 0.9.8
3432 series, SEED remains excluded from compilation unless OpenSSL
3433 is configured with 'enable-seed'.
3434 [KISA, Bodo Moeller]
3436 *) Mitigate branch prediction attacks, which can be practical if a
3437 single processor is shared, allowing a spy process to extract
3438 information. For detailed background information, see
3439 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
3440 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
3441 and Necessary Software Countermeasures"). The core of the change
3442 are new versions BN_div_no_branch() and
3443 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
3444 respectively, which are slower, but avoid the security-relevant
3445 conditional branches. These are automatically called by BN_div()
3446 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
3447 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
3448 remove a conditional branch.
3450 BN_FLG_CONSTTIME is the new name for the previous
3451 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
3452 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
3453 in the exponent causes BN_mod_exp_mont() to use the alternative
3454 implementation in BN_mod_exp_mont_consttime().) The old name
3455 remains as a deprecated alias.
3457 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
3458 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
3459 constant-time implementations for more than just exponentiation.
3460 Here too the old name is kept as a deprecated alias.
3462 BN_BLINDING_new() will now use BN_dup() for the modulus so that
3463 the BN_BLINDING structure gets an independent copy of the
3464 modulus. This means that the previous "BIGNUM *m" argument to
3465 BN_BLINDING_new() and to BN_BLINDING_create_param() now
3466 essentially becomes "const BIGNUM *m", although we can't actually
3467 change this in the header file before 0.9.9. It allows
3468 RSA_setup_blinding() to use BN_with_flags() on the modulus to
3469 enable BN_FLG_CONSTTIME.
3471 [Matthew D Wood (Intel Corp)]
3473 *) In the SSL/TLS server implementation, be strict about session ID
3474 context matching (which matters if an application uses a single
3475 external cache for different purposes). Previously,
3476 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
3477 set. This did ensure strict client verification, but meant that,
3478 with applications using a single external cache for quite
3479 different requirements, clients could circumvent ciphersuite
3480 restrictions for a given session ID context by starting a session
3481 in a different context.
3484 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
3485 a ciphersuite string such as "DEFAULT:RSA" cannot enable
3486 authentication-only ciphersuites.
3489 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
3490 not complete and could lead to a possible single byte overflow
3491 (CVE-2007-5135) [Ben Laurie]
3493 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
3495 *) Since AES128 and AES256 (and similarly Camellia128 and
3496 Camellia256) share a single mask bit in the logic of
3497 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
3498 kludge to work properly if AES128 is available and AES256 isn't
3499 (or if Camellia128 is available and Camellia256 isn't).
3502 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
3503 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
3504 When a point or a seed is encoded in a BIT STRING, we need to
3505 prevent the removal of trailing zero bits to get the proper DER
3506 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
3507 of a NamedBitList, for which trailing 0 bits need to be removed.)
3510 *) Have SSL/TLS server implementation tolerate "mismatched" record
3511 protocol version while receiving ClientHello even if the
3512 ClientHello is fragmented. (The server can't insist on the
3513 particular protocol version it has chosen before the ServerHello
3514 message has informed the client about his choice.)
3517 *) Add RFC 3779 support.
3518 [Rob Austein for ARIN, Ben Laurie]
3520 *) Load error codes if they are not already present instead of using a
3521 static variable. This allows them to be cleanly unloaded and reloaded.
3522 Improve header file function name parsing.
3525 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
3526 or CAPABILITY handshake as required by RFCs.
3529 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
3531 *) Introduce limits to prevent malicious keys being able to
3532 cause a denial of service. (CVE-2006-2940)
3533 [Steve Henson, Bodo Moeller]
3535 *) Fix ASN.1 parsing of certain invalid structures that can result
3536 in a denial of service. (CVE-2006-2937) [Steve Henson]
3538 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
3539 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
3541 *) Fix SSL client code which could crash if connecting to a
3542 malicious SSLv2 server. (CVE-2006-4343)
3543 [Tavis Ormandy and Will Drewry, Google Security Team]
3545 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
3546 match only those. Before that, "AES256-SHA" would be interpreted
3547 as a pattern and match "AES128-SHA" too (since AES128-SHA got
3548 the same strength classification in 0.9.7h) as we currently only
3549 have a single AES bit in the ciphersuite description bitmap.
3550 That change, however, also applied to ciphersuite strings such as
3551 "RC4-MD5" that intentionally matched multiple ciphersuites --
3552 namely, SSL 2.0 ciphersuites in addition to the more common ones
3553 from SSL 3.0/TLS 1.0.
3555 So we change the selection algorithm again: Naming an explicit
3556 ciphersuite selects this one ciphersuite, and any other similar
3557 ciphersuite (same bitmap) from *other* protocol versions.
3558 Thus, "RC4-MD5" again will properly select both the SSL 2.0
3559 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
3561 Since SSL 2.0 does not have any ciphersuites for which the
3562 128/256 bit distinction would be relevant, this works for now.
3563 The proper fix will be to use different bits for AES128 and
3564 AES256, which would have avoided the problems from the beginning;
3565 however, bits are scarce, so we can only do this in a new release
3566 (not just a patchlevel) when we can change the SSL_CIPHER
3567 definition to split the single 'unsigned long mask' bitmap into
3568 multiple values to extend the available space.
3572 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
3574 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
3575 (CVE-2006-4339) [Ben Laurie and Google Security Team]
3577 *) Add AES IGE and biIGE modes.
3580 *) Change the Unix randomness entropy gathering to use poll() when
3581 possible instead of select(), since the latter has some
3582 undesirable limitations.
3583 [Darryl Miles via Richard Levitte and Bodo Moeller]
3585 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
3586 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
3587 cannot be implicitly activated as part of, e.g., the "AES" alias.
3588 However, please upgrade to OpenSSL 0.9.9[-dev] for
3589 non-experimental use of the ECC ciphersuites to get TLS extension
3590 support, which is required for curve and point format negotiation
3591 to avoid potential handshake problems.
3594 *) Disable rogue ciphersuites:
3596 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
3597 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
3598 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
3600 The latter two were purportedly from
3601 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
3604 Also deactivate the remaining ciphersuites from
3605 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
3606 unofficial, and the ID has long expired.
3609 *) Fix RSA blinding Heisenbug (problems sometimes occured on
3610 dual-core machines) and other potential thread-safety issues.
3613 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
3614 versions), which is now available for royalty-free use
3615 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
3616 Also, add Camellia TLS ciphersuites from RFC 4132.
3618 To minimize changes between patchlevels in the OpenSSL 0.9.8
3619 series, Camellia remains excluded from compilation unless OpenSSL
3620 is configured with 'enable-camellia'.
3623 *) Disable the padding bug check when compression is in use. The padding
3624 bug check assumes the first packet is of even length, this is not
3625 necessarily true if compresssion is enabled and can result in false
3626 positives causing handshake failure. The actual bug test is ancient
3627 code so it is hoped that implementations will either have fixed it by
3628 now or any which still have the bug do not support compression.
3631 Changes between 0.9.8a and 0.9.8b [04 May 2006]
3633 *) When applying a cipher rule check to see if string match is an explicit
3634 cipher suite and only match that one cipher suite if it is.
3637 *) Link in manifests for VC++ if needed.
3638 [Austin Ziegler <halostatue@gmail.com>]
3640 *) Update support for ECC-based TLS ciphersuites according to
3641 draft-ietf-tls-ecc-12.txt with proposed changes (but without
3642 TLS extensions, which are supported starting with the 0.9.9
3643 branch, not in the OpenSSL 0.9.8 branch).
3646 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
3647 opaque EVP_CIPHER_CTX handling.
3650 *) Fixes and enhancements to zlib compression code. We now only use
3651 "zlib1.dll" and use the default __cdecl calling convention on Win32
3652 to conform with the standards mentioned here:
3653 http://www.zlib.net/DLL_FAQ.txt
3654 Static zlib linking now works on Windows and the new --with-zlib-include
3655 --with-zlib-lib options to Configure can be used to supply the location
3656 of the headers and library. Gracefully handle case where zlib library
3660 *) Several fixes and enhancements to the OID generation code. The old code
3661 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
3662 handle numbers larger than ULONG_MAX, truncated printing and had a
3663 non standard OBJ_obj2txt() behaviour.
3666 *) Add support for building of engines under engine/ as shared libraries
3667 under VC++ build system.
3670 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
3671 Hopefully, we will not see any false combination of paths any more.
3674 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
3676 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
3677 (part of SSL_OP_ALL). This option used to disable the
3678 countermeasure against man-in-the-middle protocol-version
3679 rollback in the SSL 2.0 server implementation, which is a bad
3680 idea. (CVE-2005-2969)
3682 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
3683 for Information Security, National Institute of Advanced Industrial
3684 Science and Technology [AIST], Japan)]
3686 *) Add two function to clear and return the verify parameter flags.
3689 *) Keep cipherlists sorted in the source instead of sorting them at
3690 runtime, thus removing the need for a lock.
3693 *) Avoid some small subgroup attacks in Diffie-Hellman.
3694 [Nick Mathewson and Ben Laurie]
3696 *) Add functions for well-known primes.
3699 *) Extended Windows CE support.
3700 [Satoshi Nakamura and Andy Polyakov]
3702 *) Initialize SSL_METHOD structures at compile time instead of during
3703 runtime, thus removing the need for a lock.
3706 *) Make PKCS7_decrypt() work even if no certificate is supplied by
3707 attempting to decrypt each encrypted key in turn. Add support to
3711 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
3713 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
3716 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
3719 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
3720 key into the same file any more.
3723 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
3726 *) Add -utf8 command line and config file option to 'ca'.
3727 [Stefan <stf@udoma.org]
3729 *) Removed the macro des_crypt(), as it seems to conflict with some
3730 libraries. Use DES_crypt().
3733 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
3734 involves renaming the source and generated shared-libs for
3735 both. The engines will accept the corrected or legacy ids
3736 ('ncipher' and '4758_cca' respectively) when binding. NB,
3737 this only applies when building 'shared'.
3738 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
3740 *) Add attribute functions to EVP_PKEY structure. Modify
3741 PKCS12_create() to recognize a CSP name attribute and
3742 use it. Make -CSP option work again in pkcs12 utility.
3745 *) Add new functionality to the bn blinding code:
3746 - automatic re-creation of the BN_BLINDING parameters after
3747 a fixed number of uses (currently 32)
3748 - add new function for parameter creation
3749 - introduce flags to control the update behaviour of the
3750 BN_BLINDING parameters
3751 - hide BN_BLINDING structure
3752 Add a second BN_BLINDING slot to the RSA structure to improve
3753 performance when a single RSA object is shared among several
3757 *) Add support for DTLS.
3758 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
3760 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
3761 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
3764 *) Remove buggy and incomplete DH cert support from
3765 ssl/ssl_rsa.c and ssl/s3_both.c
3768 *) Use SHA-1 instead of MD5 as the default digest algorithm for
3769 the apps/openssl applications.
3772 *) Compile clean with "-Wall -Wmissing-prototypes
3773 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
3774 DEBUG_SAFESTACK must also be set.
3777 *) Change ./Configure so that certain algorithms can be disabled by default.
3778 The new counterpiece to "no-xxx" is "enable-xxx".
3780 The patented RC5 and MDC2 algorithms will now be disabled unless
3781 "enable-rc5" and "enable-mdc2", respectively, are specified.
3783 (IDEA remains enabled despite being patented. This is because IDEA
3784 is frequently required for interoperability, and there is no license
3785 fee for non-commercial use. As before, "no-idea" can be used to
3786 avoid this algorithm.)
3790 *) Add processing of proxy certificates (see RFC 3820). This work was
3791 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
3792 EGEE (Enabling Grids for E-science in Europe).
3795 *) RC4 performance overhaul on modern architectures/implementations, such
3796 as Intel P4, IA-64 and AMD64.
3799 *) New utility extract-section.pl. This can be used specify an alternative
3800 section number in a pod file instead of having to treat each file as
3801 a separate case in Makefile. This can be done by adding two lines to the
3804 =for comment openssl_section:XXX
3806 The blank line is mandatory.
3810 *) New arguments -certform, -keyform and -pass for s_client and s_server
3811 to allow alternative format key and certificate files and passphrase
3815 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
3816 update associated structures and add various utility functions.
3818 Add new policy related verify parameters, include policy checking in
3819 standard verify code. Enhance 'smime' application with extra parameters
3820 to support policy checking and print out.
3823 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
3824 Nehemiah processors. These extensions support AES encryption in hardware
3825 as well as RNG (though RNG support is currently disabled).
3826 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
3828 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
3831 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
3832 [Andy Polyakov and a number of other people]
3834 *) Improved PowerPC platform support. Most notably BIGNUM assembler
3835 implementation contributed by IBM.
3836 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
3838 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
3839 exponent rather than 'unsigned long'. There is a corresponding change to
3840 the new 'rsa_keygen' element of the RSA_METHOD structure.
3841 [Jelte Jansen, Geoff Thorpe]
3843 *) Functionality for creating the initial serial number file is now
3844 moved from CA.pl to the 'ca' utility with a new option -create_serial.
3846 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
3847 number file to 1, which is bound to cause problems. To avoid
3848 the problems while respecting compatibility between different 0.9.7
3849 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
3850 CA.pl for serial number initialization. With the new release 0.9.8,
3851 we can fix the problem directly in the 'ca' utility.)
3854 *) Reduced header interdepencies by declaring more opaque objects in
3855 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
3856 give fewer recursive includes, which could break lazy source code - so
3857 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
3858 developers should define this symbol when building and using openssl to
3859 ensure they track the recommended behaviour, interfaces, [etc], but
3860 backwards-compatible behaviour prevails when this isn't defined.
3863 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
3866 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
3867 This will generate a random key of the appropriate length based on the
3868 cipher context. The EVP_CIPHER can provide its own random key generation
3869 routine to support keys of a specific form. This is used in the des and
3870 3des routines to generate a key of the correct parity. Update S/MIME
3871 code to use new functions and hence generate correct parity DES keys.
3872 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
3873 valid (weak or incorrect parity).
3876 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
3877 as looking them up. This is useful when the verified structure may contain
3878 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
3879 present unless the new PKCS7_NO_CRL flag is asserted.
3882 *) Extend ASN1 oid configuration module. It now additionally accepts the
3885 shortName = some long name, 1.2.3.4
3888 *) Reimplemented the BN_CTX implementation. There is now no more static
3889 limitation on the number of variables it can handle nor the depth of the
3890 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
3891 information can now expand as required, and rather than having a single
3892 static array of bignums, BN_CTX now uses a linked-list of such arrays
3893 allowing it to expand on demand whilst maintaining the usefulness of
3894 BN_CTX's "bundling".
3897 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
3898 to allow all RSA operations to function using a single BN_CTX.
3901 *) Preliminary support for certificate policy evaluation and checking. This
3902 is initially intended to pass the tests outlined in "Conformance Testing
3903 of Relying Party Client Certificate Path Processing Logic" v1.07.
3906 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
3907 remained unused and not that useful. A variety of other little bignum
3908 tweaks and fixes have also been made continuing on from the audit (see
3912 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
3913 associated ASN1, EVP and SSL functions and old ASN1 macros.
3916 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
3917 and this should never fail. So the return value from the use of
3918 BN_set_word() (which can fail due to needless expansion) is now deprecated;
3919 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
3922 *) BN_CTX_get() should return zero-valued bignums, providing the same
3923 initialised value as BN_new().
3924 [Geoff Thorpe, suggested by Ulf Möller]
3926 *) Support for inhibitAnyPolicy certificate extension.
3929 *) An audit of the BIGNUM code is underway, for which debugging code is
3930 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
3931 is considered valid when processing BIGNUMs, and causes execution to
3932 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
3933 further steps are taken to deliberately pollute unused data in BIGNUM
3934 structures to try and expose faulty code further on. For now, openssl will
3935 (in its default mode of operation) continue to tolerate the inconsistent
3936 forms that it has tolerated in the past, but authors and packagers should
3937 consider trying openssl and their own applications when compiled with
3938 these debugging symbols defined. It will help highlight potential bugs in
3939 their own code, and will improve the test coverage for OpenSSL itself. At
3940 some point, these tighter rules will become openssl's default to improve
3941 maintainability, though the assert()s and other overheads will remain only
3942 in debugging configurations. See bn.h for more details.
3943 [Geoff Thorpe, Nils Larsch, Ulf Möller]
3945 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
3946 that can only be obtained through BN_CTX_new() (which implicitly
3947 initialises it). The presence of this function only made it possible
3948 to overwrite an existing structure (and cause memory leaks).
3951 *) Because of the callback-based approach for implementing LHASH as a
3952 template type, lh_insert() adds opaque objects to hash-tables and
3953 lh_doall() or lh_doall_arg() are typically used with a destructor callback
3954 to clean up those corresponding objects before destroying the hash table
3955 (and losing the object pointers). So some over-zealous constifications in
3956 LHASH have been relaxed so that lh_insert() does not take (nor store) the
3957 objects as "const" and the lh_doall[_arg] callback wrappers are not
3958 prototyped to have "const" restrictions on the object pointers they are
3959 given (and so aren't required to cast them away any more).
3962 *) The tmdiff.h API was so ugly and minimal that our own timing utility
3963 (speed) prefers to use its own implementation. The two implementations
3964 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
3965 its object type properly exposed (MS_TM) instead of casting to/from "char
3966 *". This may still change yet if someone realises MS_TM and "ms_time_***"
3967 aren't necessarily the greatest nomenclatures - but this is what was used
3968 internally to the implementation so I've used that for now.
3971 *) Ensure that deprecated functions do not get compiled when
3972 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
3973 the self-tests were still using deprecated key-generation functions so
3974 these have been updated also.
3977 *) Reorganise PKCS#7 code to separate the digest location functionality
3978 into PKCS7_find_digest(), digest addition into PKCS7_bio_add_digest().
3979 New function PKCS7_set_digest() to set the digest type for PKCS#7
3980 digestedData type. Add additional code to correctly generate the
3981 digestedData type and add support for this type in PKCS7 initialization
3985 *) New function PKCS7_set0_type_other() this initializes a PKCS7
3986 structure of type "other".
3989 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
3990 sure the loop does correctly stop and breaking ("division by zero")
3991 modulus operations are not performed. The (pre-generated) prime
3992 table crypto/bn/bn_prime.h was already correct, but it could not be
3993 re-generated on some platforms because of the "division by zero"
3994 situation in the script.
3995 [Ralf S. Engelschall]
3997 *) Update support for ECC-based TLS ciphersuites according to
3998 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
3999 SHA-1 now is only used for "small" curves (where the
4000 representation of a field element takes up to 24 bytes); for
4001 larger curves, the field element resulting from ECDH is directly
4002 used as premaster secret.
4003 [Douglas Stebila (Sun Microsystems Laboratories)]
4005 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
4006 curve secp160r1 to the tests.
4007 [Douglas Stebila (Sun Microsystems Laboratories)]
4009 *) Add the possibility to load symbols globally with DSO.
4010 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
4012 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
4013 control of the error stack.
4016 *) Add support for STORE in ENGINE.
4019 *) Add the STORE type. The intention is to provide a common interface
4020 to certificate and key stores, be they simple file-based stores, or
4021 HSM-type store, or LDAP stores, or...
4022 NOTE: The code is currently UNTESTED and isn't really used anywhere.
4025 *) Add a generic structure called OPENSSL_ITEM. This can be used to
4026 pass a list of arguments to any function as well as provide a way
4027 for a function to pass data back to the caller.
4030 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
4031 works like BUF_strdup() but can be used to duplicate a portion of
4032 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
4036 *) Add the function sk_find_ex() which works like sk_find(), but will
4037 return an index to an element even if an exact match couldn't be
4038 found. The index is guaranteed to point at the element where the
4039 searched-for key would be inserted to preserve sorting order.
4042 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
4043 takes an extra flags argument for optional functionality. Currently,
4044 the following flags are defined:
4046 OBJ_BSEARCH_VALUE_ON_NOMATCH
4047 This one gets OBJ_bsearch_ex() to return a pointer to the first
4048 element where the comparing function returns a negative or zero
4051 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
4052 This one gets OBJ_bsearch_ex() to return a pointer to the first
4053 element where the comparing function returns zero. This is useful
4054 if there are more than one element where the comparing function
4058 *) Make it possible to create self-signed certificates with 'openssl ca'
4059 in such a way that the self-signed certificate becomes part of the
4060 CA database and uses the same mechanisms for serial number generation
4061 as all other certificate signing. The new flag '-selfsign' enables
4062 this functionality. Adapt CA.sh and CA.pl.in.
4065 *) Add functionality to check the public key of a certificate request
4066 against a given private. This is useful to check that a certificate
4067 request can be signed by that key (self-signing).
4070 *) Make it possible to have multiple active certificates with the same
4071 subject in the CA index file. This is done only if the keyword
4072 'unique_subject' is set to 'no' in the main CA section (default
4073 if 'CA_default') of the configuration file. The value is saved
4074 with the database itself in a separate index attribute file,
4075 named like the index file with '.attr' appended to the name.
4078 *) Generate muti valued AVAs using '+' notation in config files for
4082 *) Support for nameConstraints certificate extension.
4085 *) Support for policyConstraints certificate extension.
4088 *) Support for policyMappings certificate extension.
4091 *) Make sure the default DSA_METHOD implementation only uses its
4092 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
4093 and change its own handlers to be NULL so as to remove unnecessary
4094 indirection. This lets alternative implementations fallback to the
4095 default implementation more easily.
4098 *) Support for directoryName in GeneralName related extensions
4102 *) Make it possible to link applications using Makefile.shared.
4103 Make that possible even when linking against static libraries!
4106 *) Support for single pass processing for S/MIME signing. This now
4107 means that S/MIME signing can be done from a pipe, in addition
4108 cleartext signing (multipart/signed type) is effectively streaming
4109 and the signed data does not need to be all held in memory.
4111 This is done with a new flag PKCS7_STREAM. When this flag is set
4112 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
4113 is done after the data is output (and digests calculated) in
4114 SMIME_write_PKCS7().
4117 *) Add full support for -rpath/-R, both in shared libraries and
4118 applications, at least on the platforms where it's known how
4122 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
4123 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
4124 will now compute a table of multiples of the generator that
4125 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
4126 faster (notably in the case of a single point multiplication,
4127 scalar * generator).
4128 [Nils Larsch, Bodo Moeller]
4130 *) IPv6 support for certificate extensions. The various extensions
4131 which use the IP:a.b.c.d can now take IPv6 addresses using the
4132 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
4136 *) Added an ENGINE that implements RSA by performing private key
4137 exponentiations with the GMP library. The conversions to and from
4138 GMP's mpz_t format aren't optimised nor are any montgomery forms
4139 cached, and on x86 it appears OpenSSL's own performance has caught up.
4140 However there are likely to be other architectures where GMP could
4141 provide a boost. This ENGINE is not built in by default, but it can be
4142 specified at Configure time and should be accompanied by the necessary
4143 linker additions, eg;
4144 ./config -DOPENSSL_USE_GMP -lgmp
4147 *) "openssl engine" will not display ENGINE/DSO load failure errors when
4148 testing availability of engines with "-t" - the old behaviour is
4149 produced by increasing the feature's verbosity with "-tt".
4152 *) ECDSA routines: under certain error conditions uninitialized BN objects
4153 could be freed. Solution: make sure initialization is performed early
4154 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
4158 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
4159 and DH_METHOD (eg. by ENGINE implementations) to override the normal
4160 software implementations. For DSA and DH, parameter generation can
4161 also be overriden by providing the appropriate method callbacks.
4164 *) Change the "progress" mechanism used in key-generation and
4165 primality testing to functions that take a new BN_GENCB pointer in
4166 place of callback/argument pairs. The new API functions have "_ex"
4167 postfixes and the older functions are reimplemented as wrappers for
4168 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
4169 declarations of the old functions to help (graceful) attempts to
4170 migrate to the new functions. Also, the new key-generation API
4171 functions operate on a caller-supplied key-structure and return
4172 success/failure rather than returning a key or NULL - this is to
4173 help make "keygen" another member function of RSA_METHOD etc.
4175 Example for using the new callback interface:
4177 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
4181 BN_GENCB_set(&my_cb, my_callback, my_arg);
4183 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
4184 /* For the meaning of a, b in calls to my_callback(), see the
4185 * documentation of the function that calls the callback.
4186 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
4187 * my_callback should return 1 if it wants BN_is_prime_ex()
4188 * to continue, or 0 to stop.
4193 *) Change the ZLIB compression method to be stateful, and make it
4194 available to TLS with the number defined in
4195 draft-ietf-tls-compression-04.txt.
4198 *) Add the ASN.1 structures and functions for CertificatePair, which
4199 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
4201 CertificatePair ::= SEQUENCE {
4202 forward [0] Certificate OPTIONAL,
4203 reverse [1] Certificate OPTIONAL,
4204 -- at least one of the pair shall be present -- }
4206 Also implement the PEM functions to read and write certificate
4207 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
4209 This needed to be defined, mostly for the sake of the LDAP
4210 attribute crossCertificatePair, but may prove useful elsewhere as
4214 *) Make it possible to inhibit symlinking of shared libraries in
4215 Makefile.shared, for Cygwin's sake.
4218 *) Extend the BIGNUM API by creating a function
4219 void BN_set_negative(BIGNUM *a, int neg);
4220 and a macro that behave like
4221 int BN_is_negative(const BIGNUM *a);
4223 to avoid the need to access 'a->neg' directly in applications.
4226 *) Implement fast modular reduction for pseudo-Mersenne primes
4227 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
4228 EC_GROUP_new_curve_GFp() will now automatically use this
4230 [Nils Larsch <nla@trustcenter.de>]
4232 *) Add new lock type (CRYPTO_LOCK_BN).
4235 *) Change the ENGINE framework to automatically load engines
4236 dynamically from specific directories unless they could be
4237 found to already be built in or loaded. Move all the
4238 current engines except for the cryptodev one to a new
4240 The engines in engines/ are built as shared libraries if
4241 the "shared" options was given to ./Configure or ./config.
4242 Otherwise, they are inserted in libcrypto.a.
4243 /usr/local/ssl/engines is the default directory for dynamic
4244 engines, but that can be overriden at configure time through
4245 the usual use of --prefix and/or --openssldir, and at run
4246 time with the environment variable OPENSSL_ENGINES.
4247 [Geoff Thorpe and Richard Levitte]
4249 *) Add Makefile.shared, a helper makefile to build shared
4250 libraries. Adapt Makefile.org.
4253 *) Add version info to Win32 DLLs.
4254 [Peter 'Luna' Runestig" <peter@runestig.com>]
4256 *) Add new 'medium level' PKCS#12 API. Certificates and keys
4257 can be added using this API to created arbitrary PKCS#12
4258 files while avoiding the low level API.
4260 New options to PKCS12_create(), key or cert can be NULL and
4261 will then be omitted from the output file. The encryption
4262 algorithm NIDs can be set to -1 for no encryption, the mac
4263 iteration count can be set to 0 to omit the mac.
4265 Enhance pkcs12 utility by making the -nokeys and -nocerts
4266 options work when creating a PKCS#12 file. New option -nomac
4267 to omit the mac, NONE can be set for an encryption algorithm.
4268 New code is modified to use the enhanced PKCS12_create()
4269 instead of the low level API.
4272 *) Extend ASN1 encoder to support indefinite length constructed
4273 encoding. This can output sequences tags and octet strings in
4274 this form. Modify pk7_asn1.c to support indefinite length
4275 encoding. This is experimental and needs additional code to
4276 be useful, such as an ASN1 bio and some enhanced streaming
4279 Extend template encode functionality so that tagging is passed
4280 down to the template encoder.
4283 *) Let 'openssl req' fail if an argument to '-newkey' is not
4284 recognized instead of using RSA as a default.
4287 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
4288 As these are not official, they are not included in "ALL";
4289 the "ECCdraft" ciphersuite group alias can be used to select them.
4290 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
4292 *) Add ECDH engine support.
4293 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
4295 *) Add ECDH in new directory crypto/ecdh/.
4296 [Douglas Stebila (Sun Microsystems Laboratories)]
4298 *) Let BN_rand_range() abort with an error after 100 iterations
4299 without success (which indicates a broken PRNG).
4302 *) Change BN_mod_sqrt() so that it verifies that the input value
4303 is really the square of the return value. (Previously,
4304 BN_mod_sqrt would show GIGO behaviour.)
4307 *) Add named elliptic curves over binary fields from X9.62, SECG,
4308 and WAP/WTLS; add OIDs that were still missing.
4310 [Sheueling Chang Shantz and Douglas Stebila
4311 (Sun Microsystems Laboratories)]
4313 *) Extend the EC library for elliptic curves over binary fields
4314 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
4317 EC_GF2m_simple_method
4321 EC_GROUP_new_curve_GF2m
4322 EC_GROUP_set_curve_GF2m
4323 EC_GROUP_get_curve_GF2m
4324 EC_POINT_set_affine_coordinates_GF2m
4325 EC_POINT_get_affine_coordinates_GF2m
4326 EC_POINT_set_compressed_coordinates_GF2m
4328 Point compression for binary fields is disabled by default for
4329 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
4332 As binary polynomials are represented as BIGNUMs, various members
4333 of the EC_GROUP and EC_POINT data structures can be shared
4334 between the implementations for prime fields and binary fields;
4335 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
4336 are essentially identical to their ..._GFp counterparts.
4337 (For simplicity, the '..._GFp' prefix has been dropped from
4338 various internal method names.)
4340 An internal 'field_div' method (similar to 'field_mul' and
4341 'field_sqr') has been added; this is used only for binary fields.
4343 [Sheueling Chang Shantz and Douglas Stebila
4344 (Sun Microsystems Laboratories)]
4346 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
4347 through methods ('mul', 'precompute_mult').
4349 The generic implementations (now internally called 'ec_wNAF_mul'
4350 and 'ec_wNAF_precomputed_mult') remain the default if these
4351 methods are undefined.
4353 [Sheueling Chang Shantz and Douglas Stebila
4354 (Sun Microsystems Laboratories)]
4356 *) New function EC_GROUP_get_degree, which is defined through
4357 EC_METHOD. For curves over prime fields, this returns the bit
4358 length of the modulus.
4360 [Sheueling Chang Shantz and Douglas Stebila
4361 (Sun Microsystems Laboratories)]
4363 *) New functions EC_GROUP_dup, EC_POINT_dup.
4364 (These simply call ..._new and ..._copy).
4366 [Sheueling Chang Shantz and Douglas Stebila
4367 (Sun Microsystems Laboratories)]
4369 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
4370 Polynomials are represented as BIGNUMs (where the sign bit is not
4371 used) in the following functions [macros]:
4374 BN_GF2m_sub [= BN_GF2m_add]
4375 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
4376 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
4377 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
4379 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
4380 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
4381 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
4382 BN_GF2m_cmp [= BN_ucmp]
4384 (Note that only the 'mod' functions are actually for fields GF(2^m).
4385 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
4387 For some functions, an the irreducible polynomial defining a
4388 field can be given as an 'unsigned int[]' with strictly
4389 decreasing elements giving the indices of those bits that are set;
4390 i.e., p[] represents the polynomial
4391 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
4393 p[0] > p[1] > ... > p[k] = 0.
4394 This applies to the following functions:
4399 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
4400 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
4402 BN_GF2m_mod_sqrt_arr
4403 BN_GF2m_mod_solve_quad_arr
4407 Conversion can be performed by the following functions:
4412 bntest.c has additional tests for binary polynomial arithmetic.
4414 Two implementations for BN_GF2m_mod_div() are available.
4415 The default algorithm simply uses BN_GF2m_mod_inv() and
4416 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
4417 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
4418 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
4420 [Sheueling Chang Shantz and Douglas Stebila
4421 (Sun Microsystems Laboratories)]
4423 *) Add new error code 'ERR_R_DISABLED' that can be used when some
4424 functionality is disabled at compile-time.
4425 [Douglas Stebila <douglas.stebila@sun.com>]
4427 *) Change default behaviour of 'openssl asn1parse' so that more
4428 information is visible when viewing, e.g., a certificate:
4430 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
4431 mode the content of non-printable OCTET STRINGs is output in a
4432 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
4433 avoid the appearance of a printable string.
4434 [Nils Larsch <nla@trustcenter.de>]
4436 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
4438 EC_GROUP_set_asn1_flag()
4439 EC_GROUP_get_asn1_flag()
4440 EC_GROUP_set_point_conversion_form()
4441 EC_GROUP_get_point_conversion_form()
4442 These control ASN1 encoding details:
4443 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
4444 has been set to OPENSSL_EC_NAMED_CURVE.
4445 - Points are encoded in uncompressed form by default; options for
4446 asn1_for are as for point2oct, namely
4447 POINT_CONVERSION_COMPRESSED
4448 POINT_CONVERSION_UNCOMPRESSED
4449 POINT_CONVERSION_HYBRID
4451 Also add 'seed' and 'seed_len' members to EC_GROUP with access
4454 EC_GROUP_get0_seed()
4455 EC_GROUP_get_seed_len()
4456 This is used only for ASN1 purposes (so far).
4457 [Nils Larsch <nla@trustcenter.de>]
4459 *) Add 'field_type' member to EC_METHOD, which holds the NID
4460 of the appropriate field type OID. The new function
4461 EC_METHOD_get_field_type() returns this value.
4462 [Nils Larsch <nla@trustcenter.de>]
4467 EC_POINT_point2hex()
4468 EC_POINT_hex2point()
4469 providing useful interfaces to EC_POINT_point2oct() and
4470 EC_POINT_oct2point().
4471 [Nils Larsch <nla@trustcenter.de>]
4473 *) Change internals of the EC library so that the functions
4474 EC_GROUP_set_generator()
4475 EC_GROUP_get_generator()
4476 EC_GROUP_get_order()
4477 EC_GROUP_get_cofactor()
4478 are implemented directly in crypto/ec/ec_lib.c and not dispatched
4479 to methods, which would lead to unnecessary code duplication when
4480 adding different types of curves.
4481 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
4483 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
4484 arithmetic, and such that modified wNAFs are generated
4485 (which avoid length expansion in many cases).
4488 *) Add a function EC_GROUP_check_discriminant() (defined via
4489 EC_METHOD) that verifies that the curve discriminant is non-zero.
4491 Add a function EC_GROUP_check() that makes some sanity tests
4492 on a EC_GROUP, its generator and order. This includes
4493 EC_GROUP_check_discriminant().
4494 [Nils Larsch <nla@trustcenter.de>]
4496 *) Add ECDSA in new directory crypto/ecdsa/.
4498 Add applications 'openssl ecparam' and 'openssl ecdsa'
4499 (these are based on 'openssl dsaparam' and 'openssl dsa').
4501 ECDSA support is also included in various other files across the
4502 library. Most notably,
4503 - 'openssl req' now has a '-newkey ecdsa:file' option;
4504 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
4505 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
4506 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
4507 them suitable for ECDSA where domain parameters must be
4508 extracted before the specific public key;
4509 - ECDSA engine support has been added.
4510 [Nils Larsch <nla@trustcenter.de>]
4512 *) Include some named elliptic curves, and add OIDs from X9.62,
4513 SECG, and WAP/WTLS. Each curve can be obtained from the new
4515 EC_GROUP_new_by_curve_name(),
4516 and the list of available named curves can be obtained with
4517 EC_get_builtin_curves().
4518 Also add a 'curve_name' member to EC_GROUP objects, which can be
4520 EC_GROUP_set_curve_name()
4521 EC_GROUP_get_curve_name()
4522 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
4524 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
4525 was actually never needed) and in BN_mul(). The removal in BN_mul()
4526 required a small change in bn_mul_part_recursive() and the addition
4527 of the functions bn_cmp_part_words(), bn_sub_part_words() and
4528 bn_add_part_words(), which do the same thing as bn_cmp_words(),
4529 bn_sub_words() and bn_add_words() except they take arrays with
4533 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
4535 *) Cleanse PEM buffers before freeing them since they may contain
4537 [Benjamin Bennett <ben@psc.edu>]
4539 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
4540 a ciphersuite string such as "DEFAULT:RSA" cannot enable
4541 authentication-only ciphersuites.
4544 *) Since AES128 and AES256 share a single mask bit in the logic of
4545 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
4546 kludge to work properly if AES128 is available and AES256 isn't.
4549 *) Expand security boundary to match 1.1.1 module.
4552 *) Remove redundant features: hash file source, editing of test vectors
4553 modify fipsld to use external fips_premain.c signature.
4556 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
4557 run algorithm test programs.
4560 *) Make algorithm test programs more tolerant of whitespace.
4563 *) Have SSL/TLS server implementation tolerate "mismatched" record
4564 protocol version while receiving ClientHello even if the
4565 ClientHello is fragmented. (The server can't insist on the
4566 particular protocol version it has chosen before the ServerHello
4567 message has informed the client about his choice.)
4570 *) Load error codes if they are not already present instead of using a
4571 static variable. This allows them to be cleanly unloaded and reloaded.
4574 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
4576 *) Introduce limits to prevent malicious keys being able to
4577 cause a denial of service. (CVE-2006-2940)
4578 [Steve Henson, Bodo Moeller]
4580 *) Fix ASN.1 parsing of certain invalid structures that can result
4581 in a denial of service. (CVE-2006-2937) [Steve Henson]
4583 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
4584 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
4586 *) Fix SSL client code which could crash if connecting to a
4587 malicious SSLv2 server. (CVE-2006-4343)
4588 [Tavis Ormandy and Will Drewry, Google Security Team]
4590 *) Change ciphersuite string processing so that an explicit
4591 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
4592 will no longer include "AES128-SHA"), and any other similar
4593 ciphersuite (same bitmap) from *other* protocol versions (so that
4594 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
4595 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
4596 changes from 0.9.8b and 0.9.8d.
4599 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
4601 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
4602 (CVE-2006-4339) [Ben Laurie and Google Security Team]
4604 *) Change the Unix randomness entropy gathering to use poll() when
4605 possible instead of select(), since the latter has some
4606 undesirable limitations.
4607 [Darryl Miles via Richard Levitte and Bodo Moeller]
4609 *) Disable rogue ciphersuites:
4611 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
4612 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
4613 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
4615 The latter two were purportedly from
4616 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
4619 Also deactive the remaining ciphersuites from
4620 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
4621 unofficial, and the ID has long expired.
4624 *) Fix RSA blinding Heisenbug (problems sometimes occured on
4625 dual-core machines) and other potential thread-safety issues.
4628 Changes between 0.9.7i and 0.9.7j [04 May 2006]
4630 *) Adapt fipsld and the build system to link against the validated FIPS
4631 module in FIPS mode.
4634 *) Fixes for VC++ 2005 build under Windows.
4637 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
4638 from a Windows bash shell such as MSYS. It is autodetected from the
4639 "config" script when run from a VC++ environment. Modify standard VC++
4640 build to use fipscanister.o from the GNU make build.
4643 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
4645 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
4646 The value now differs depending on if you build for FIPS or not.
4647 BEWARE! A program linked with a shared FIPSed libcrypto can't be
4648 safely run with a non-FIPSed libcrypto, as it may crash because of
4649 the difference induced by this change.
4652 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
4654 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
4655 (part of SSL_OP_ALL). This option used to disable the
4656 countermeasure against man-in-the-middle protocol-version
4657 rollback in the SSL 2.0 server implementation, which is a bad
4658 idea. (CVE-2005-2969)
4660 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
4661 for Information Security, National Institute of Advanced Industrial
4662 Science and Technology [AIST], Japan)]
4664 *) Minimal support for X9.31 signatures and PSS padding modes. This is
4665 mainly for FIPS compliance and not fully integrated at this stage.
4668 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
4669 the exponentiation using a fixed-length exponent. (Otherwise,
4670 the information leaked through timing could expose the secret key
4671 after many signatures; cf. Bleichenbacher's attack on DSA with
4675 *) Make a new fixed-window mod_exp implementation the default for
4676 RSA, DSA, and DH private-key operations so that the sequence of
4677 squares and multiplies and the memory access pattern are
4678 independent of the particular secret key. This will mitigate
4679 cache-timing and potential related attacks.
4681 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
4682 and this is automatically used by BN_mod_exp_mont() if the new flag
4683 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
4684 will use this BN flag for private exponents unless the flag
4685 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
4686 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
4688 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
4690 *) Change the client implementation for SSLv23_method() and
4691 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
4692 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
4693 (Previously, the SSL 2.0 backwards compatible Client Hello
4694 message format would be used even with SSL_OP_NO_SSLv2.)
4697 *) Add support for smime-type MIME parameter in S/MIME messages which some
4701 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
4702 a threadsafe manner. Modify rsa code to use new function and add calls
4703 to dsa and dh code (which had race conditions before).
4706 *) Include the fixed error library code in the C error file definitions
4707 instead of fixing them up at runtime. This keeps the error code
4708 structures constant.
4711 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
4713 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
4716 *) Fixes for newer kerberos headers. NB: the casts are needed because
4717 the 'length' field is signed on one version and unsigned on another
4718 with no (?) obvious way to tell the difference, without these VC++
4719 complains. Also the "definition" of FAR (blank) is no longer included
4720 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
4721 some needed definitions.
4724 *) Undo Cygwin change.
4727 *) Added support for proxy certificates according to RFC 3820.
4728 Because they may be a security thread to unaware applications,
4729 they must be explicitely allowed in run-time. See
4730 docs/HOWTO/proxy_certificates.txt for further information.
4733 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
4735 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
4736 server and client random values. Previously
4737 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
4738 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
4740 This change has negligible security impact because:
4742 1. Server and client random values still have 24 bytes of pseudo random
4745 2. Server and client random values are sent in the clear in the initial
4748 3. The master secret is derived using the premaster secret (48 bytes in
4749 size for static RSA ciphersuites) as well as client server and random
4752 The OpenSSL team would like to thank the UK NISCC for bringing this issue
4755 [Stephen Henson, reported by UK NISCC]
4757 *) Use Windows randomness collection on Cygwin.
4760 *) Fix hang in EGD/PRNGD query when communication socket is closed
4761 prematurely by EGD/PRNGD.
4762 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
4764 *) Prompt for pass phrases when appropriate for PKCS12 input format.
4767 *) Back-port of selected performance improvements from development
4768 branch, as well as improved support for PowerPC platforms.
4771 *) Add lots of checks for memory allocation failure, error codes to indicate
4772 failure and freeing up memory if a failure occurs.
4773 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
4775 *) Add new -passin argument to dgst.
4778 *) Perform some character comparisons of different types in X509_NAME_cmp:
4779 this is needed for some certificates that reencode DNs into UTF8Strings
4780 (in violation of RFC3280) and can't or wont issue name rollover
4784 *) Make an explicit check during certificate validation to see that
4785 the CA setting in each certificate on the chain is correct. As a
4786 side effect always do the following basic checks on extensions,
4787 not just when there's an associated purpose to the check:
4789 - if there is an unhandled critical extension (unless the user
4790 has chosen to ignore this fault)
4791 - if the path length has been exceeded (if one is set at all)
4792 - that certain extensions fit the associated purpose (if one has
4796 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
4798 *) Avoid a race condition when CRLs are checked in a multi threaded
4799 environment. This would happen due to the reordering of the revoked
4800 entries during signature checking and serial number lookup. Now the
4801 encoding is cached and the serial number sort performed under a lock.
4802 Add new STACK function sk_is_sorted().
4805 *) Add Delta CRL to the extension code.
4808 *) Various fixes to s3_pkt.c so alerts are sent properly.
4809 [David Holmes <d.holmes@f5.com>]
4811 *) Reduce the chances of duplicate issuer name and serial numbers (in
4812 violation of RFC3280) using the OpenSSL certificate creation utilities.
4813 This is done by creating a random 64 bit value for the initial serial
4814 number when a serial number file is created or when a self signed
4815 certificate is created using 'openssl req -x509'. The initial serial
4816 number file is created using 'openssl x509 -next_serial' in CA.pl
4817 rather than being initialized to 1.
4820 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
4822 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
4823 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
4824 [Joe Orton, Steve Henson]
4826 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
4828 [Joe Orton, Steve Henson]
4830 *) Make it possible to have multiple active certificates with the same
4831 subject in the CA index file. This is done only if the keyword
4832 'unique_subject' is set to 'no' in the main CA section (default
4833 if 'CA_default') of the configuration file. The value is saved
4834 with the database itself in a separate index attribute file,
4835 named like the index file with '.attr' appended to the name.
4838 *) X509 verify fixes. Disable broken certificate workarounds when
4839 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
4840 keyUsage extension present. Don't accept CRLs with unhandled critical
4841 extensions: since verify currently doesn't process CRL extensions this
4842 rejects a CRL with *any* critical extensions. Add new verify error codes
4846 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
4847 A clarification of RFC2560 will require the use of OCTET STRINGs and
4848 some implementations cannot handle the current raw format. Since OpenSSL
4849 copies and compares OCSP nonces as opaque blobs without any attempt at
4850 parsing them this should not create any compatibility issues.
4853 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
4854 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
4855 this HMAC (and other) operations are several times slower than OpenSSL
4859 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
4860 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
4862 *) Use the correct content when signing type "other".
4865 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
4867 *) Fix various bugs revealed by running the NISCC test suite:
4869 Stop out of bounds reads in the ASN1 code when presented with
4870 invalid tags (CVE-2003-0543 and CVE-2003-0544).
4872 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
4874 If verify callback ignores invalid public key errors don't try to check
4875 certificate signature with the NULL public key.
4879 *) New -ignore_err option in ocsp application to stop the server
4880 exiting on the first error in a request.
4883 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
4884 if the server requested one: as stated in TLS 1.0 and SSL 3.0
4888 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
4889 extra data after the compression methods not only for TLS 1.0
4890 but also for SSL 3.0 (as required by the specification).
4891 [Bodo Moeller; problem pointed out by Matthias Loepfe]
4893 *) Change X509_certificate_type() to mark the key as exported/exportable
4894 when it's 512 *bits* long, not 512 bytes.
4897 *) Change AES_cbc_encrypt() so it outputs exact multiple of
4898 blocks during encryption.
4901 *) Various fixes to base64 BIO and non blocking I/O. On write
4902 flushes were not handled properly if the BIO retried. On read
4903 data was not being buffered properly and had various logic bugs.
4904 This also affects blocking I/O when the data being decoded is a
4908 *) Various S/MIME bugfixes and compatibility changes:
4909 output correct application/pkcs7 MIME type if
4910 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
4911 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
4912 of files as .eml work). Correctly handle very long lines in MIME
4916 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
4918 *) Countermeasure against the Klima-Pokorny-Rosa extension of
4919 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
4920 a protocol version number mismatch like a decryption error
4921 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
4924 *) Turn on RSA blinding by default in the default implementation
4925 to avoid a timing attack. Applications that don't want it can call
4926 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
4927 They would be ill-advised to do so in most cases.
4928 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
4930 *) Change RSA blinding code so that it works when the PRNG is not
4931 seeded (in this case, the secret RSA exponent is abused as
4932 an unpredictable seed -- if it is not unpredictable, there
4933 is no point in blinding anyway). Make RSA blinding thread-safe
4934 by remembering the creator's thread ID in rsa->blinding and
4935 having all other threads use local one-time blinding factors
4936 (this requires more computation than sharing rsa->blinding, but
4937 avoids excessive locking; and if an RSA object is not shared
4938 between threads, blinding will still be very fast).
4941 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
4942 ENGINE as defaults for all supported algorithms irrespective of
4943 the 'flags' parameter. 'flags' is now honoured, so applications
4944 should make sure they are passing it correctly.
4947 *) Target "mingw" now allows native Windows code to be generated in
4948 the Cygwin environment as well as with the MinGW compiler.
4951 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
4953 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
4954 via timing by performing a MAC computation even if incorrect
4955 block cipher padding has been found. This is a countermeasure
4956 against active attacks where the attacker has to distinguish
4957 between bad padding and a MAC verification error. (CVE-2003-0078)
4959 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
4960 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
4961 Martin Vuagnoux (EPFL, Ilion)]
4963 *) Make the no-err option work as intended. The intention with no-err
4964 is not to have the whole error stack handling routines removed from
4965 libcrypto, it's only intended to remove all the function name and
4966 reason texts, thereby removing some of the footprint that may not
4967 be interesting if those errors aren't displayed anyway.
4969 NOTE: it's still possible for any application or module to have it's
4970 own set of error texts inserted. The routines are there, just not
4971 used by default when no-err is given.
4974 *) Add support for FreeBSD on IA64.
4975 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
4977 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
4978 Kerberos function mit_des_cbc_cksum(). Before this change,
4979 the value returned by DES_cbc_cksum() was like the one from
4980 mit_des_cbc_cksum(), except the bytes were swapped.
4981 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
4983 *) Allow an application to disable the automatic SSL chain building.
4984 Before this a rather primitive chain build was always performed in
4985 ssl3_output_cert_chain(): an application had no way to send the
4986 correct chain if the automatic operation produced an incorrect result.
4988 Now the chain builder is disabled if either:
4990 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
4992 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
4994 The reasoning behind this is that an application would not want the
4995 auto chain building to take place if extra chain certificates are
4996 present and it might also want a means of sending no additional
4997 certificates (for example the chain has two certificates and the
5001 *) Add the possibility to build without the ENGINE framework.
5002 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
5004 *) Under Win32 gmtime() can return NULL: check return value in
5005 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
5008 *) DSA routines: under certain error conditions uninitialized BN objects
5009 could be freed. Solution: make sure initialization is performed early
5010 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
5011 Nils Larsch <nla@trustcenter.de> via PR#459)
5014 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
5015 checked on reconnect on the client side, therefore session resumption
5016 could still fail with a "ssl session id is different" error. This
5017 behaviour is masked when SSL_OP_ALL is used due to
5018 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
5019 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
5020 followup to PR #377.
5023 *) IA-32 assembler support enhancements: unified ELF targets, support
5024 for SCO/Caldera platforms, fix for Cygwin shared build.
5027 *) Add support for FreeBSD on sparc64. As a consequence, support for
5028 FreeBSD on non-x86 processors is separate from x86 processors on
5029 the config script, much like the NetBSD support.
5030 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
5032 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
5034 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
5037 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
5038 code (06) was taken as the first octet of the session ID and the last
5039 octet was ignored consequently. As a result SSLv2 client side session
5040 caching could not have worked due to the session ID mismatch between
5042 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
5046 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
5047 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
5051 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
5052 seems that in spite of existing for more than a year, many application
5053 author have done nothing to provide the necessary callbacks, which
5054 means that this particular engine will not work properly anywhere.
5055 This is a very unfortunate situation which forces us, in the name
5056 of usability, to give the hw_ncipher.c a static lock, which is part
5058 NOTE: This is for the 0.9.7 series ONLY. This hack will never
5059 appear in 0.9.8 or later. We EXPECT application authors to have
5060 dealt properly with this when 0.9.8 is released (unless we actually
5061 make such changes in the libcrypto locking code that changes will
5062 have to be made anyway).
5065 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
5066 octets have been read, EOF or an error occurs. Without this change
5067 some truncated ASN1 structures will not produce an error.
5070 *) Disable Heimdal support, since it hasn't been fully implemented.
5071 Still give the possibility to force the use of Heimdal, but with
5072 warnings and a request that patches get sent to openssl-dev.
5075 *) Add the VC-CE target, introduce the WINCE sysname, and add
5076 INSTALL.WCE and appropriate conditionals to make it build.
5077 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
5079 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
5080 cygssl-x.y.z.dll, where x, y and z are the major, minor and
5081 edit numbers of the version.
5082 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
5084 *) Introduce safe string copy and catenation functions
5085 (BUF_strlcpy() and BUF_strlcat()).
5086 [Ben Laurie (CHATS) and Richard Levitte]
5088 *) Avoid using fixed-size buffers for one-line DNs.
5089 [Ben Laurie (CHATS)]
5091 *) Add BUF_MEM_grow_clean() to avoid information leakage when
5092 resizing buffers containing secrets, and use where appropriate.
5093 [Ben Laurie (CHATS)]
5095 *) Avoid using fixed size buffers for configuration file location.
5096 [Ben Laurie (CHATS)]
5098 *) Avoid filename truncation for various CA files.
5099 [Ben Laurie (CHATS)]
5101 *) Use sizeof in preference to magic numbers.
5102 [Ben Laurie (CHATS)]
5104 *) Avoid filename truncation in cert requests.
5105 [Ben Laurie (CHATS)]
5107 *) Add assertions to check for (supposedly impossible) buffer
5109 [Ben Laurie (CHATS)]
5111 *) Don't cache truncated DNS entries in the local cache (this could
5112 potentially lead to a spoofing attack).
5113 [Ben Laurie (CHATS)]
5115 *) Fix various buffers to be large enough for hex/decimal
5116 representations in a platform independent manner.
5117 [Ben Laurie (CHATS)]
5119 *) Add CRYPTO_realloc_clean() to avoid information leakage when
5120 resizing buffers containing secrets, and use where appropriate.
5121 [Ben Laurie (CHATS)]
5123 *) Add BIO_indent() to avoid much slightly worrying code to do
5125 [Ben Laurie (CHATS)]
5127 *) Convert sprintf()/BIO_puts() to BIO_printf().
5128 [Ben Laurie (CHATS)]
5130 *) buffer_gets() could terminate with the buffer only half
5132 [Ben Laurie (CHATS)]
5134 *) Add assertions to prevent user-supplied crypto functions from
5135 overflowing internal buffers by having large block sizes, etc.
5136 [Ben Laurie (CHATS)]
5138 *) New OPENSSL_assert() macro (similar to assert(), but enabled
5140 [Ben Laurie (CHATS)]
5142 *) Eliminate unused copy of key in RC4.
5143 [Ben Laurie (CHATS)]
5145 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
5146 [Ben Laurie (CHATS)]
5148 *) Fix off-by-one error in EGD path.
5149 [Ben Laurie (CHATS)]
5151 *) If RANDFILE path is too long, ignore instead of truncating.
5152 [Ben Laurie (CHATS)]
5154 *) Eliminate unused and incorrectly sized X.509 structure
5156 [Ben Laurie (CHATS)]
5158 *) Eliminate unused and dangerous function knumber().
5159 [Ben Laurie (CHATS)]
5161 *) Eliminate unused and dangerous structure, KSSL_ERR.
5162 [Ben Laurie (CHATS)]
5164 *) Protect against overlong session ID context length in an encoded
5165 session object. Since these are local, this does not appear to be
5167 [Ben Laurie (CHATS)]
5169 *) Change from security patch (see 0.9.6e below) that did not affect
5170 the 0.9.6 release series:
5172 Remote buffer overflow in SSL3 protocol - an attacker could
5173 supply an oversized master key in Kerberos-enabled versions.
5175 [Ben Laurie (CHATS)]
5177 *) Change the SSL kerb5 codes to match RFC 2712.
5180 *) Make -nameopt work fully for req and add -reqopt switch.
5181 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
5183 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
5184 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
5186 *) Make sure tests can be performed even if the corresponding algorithms
5187 have been removed entirely. This was also the last step to make
5188 OpenSSL compilable with DJGPP under all reasonable conditions.
5189 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
5191 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
5192 to allow version independent disabling of normally unselected ciphers,
5193 which may be activated as a side-effect of selecting a single cipher.
5195 (E.g., cipher list string "RSA" enables ciphersuites that are left
5196 out of "ALL" because they do not provide symmetric encryption.
5197 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
5198 [Lutz Jaenicke, Bodo Moeller]
5200 *) Add appropriate support for separate platform-dependent build
5201 directories. The recommended way to make a platform-dependent
5202 build directory is the following (tested on Linux), maybe with
5205 # Place yourself outside of the OpenSSL source tree. In
5206 # this example, the environment variable OPENSSL_SOURCE
5207 # is assumed to contain the absolute OpenSSL source directory.
5208 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
5209 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
5210 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
5211 mkdir -p `dirname $F`
5212 ln -s $OPENSSL_SOURCE/$F $F
5215 To be absolutely sure not to disturb the source tree, a "make clean"
5216 is a good thing. If it isn't successful, don't worry about it,
5217 it probably means the source directory is very clean.
5220 *) Make sure any ENGINE control commands make local copies of string
5221 pointers passed to them whenever necessary. Otherwise it is possible
5222 the caller may have overwritten (or deallocated) the original string
5223 data when a later ENGINE operation tries to use the stored values.
5224 [Götz Babin-Ebell <babinebell@trustcenter.de>]
5226 *) Improve diagnostics in file reading and command-line digests.
5227 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
5229 *) Add AES modes CFB and OFB to the object database. Correct an
5230 error in AES-CFB decryption.
5233 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
5234 allows existing EVP_CIPHER_CTX structures to be reused after
5235 calling EVP_*Final(). This behaviour is used by encryption
5236 BIOs and some applications. This has the side effect that
5237 applications must explicitly clean up cipher contexts with
5238 EVP_CIPHER_CTX_cleanup() or they will leak memory.
5241 *) Check the values of dna and dnb in bn_mul_recursive before calling
5242 bn_mul_comba (a non zero value means the a or b arrays do not contain
5243 n2 elements) and fallback to bn_mul_normal if either is not zero.
5246 *) Fix escaping of non-ASCII characters when using the -subj option
5247 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
5250 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
5251 form for "surname", serialNumber has no short form.
5252 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
5253 therefore remove "mail" short name for "internet 7".
5254 The OID for unique identifiers in X509 certificates is
5255 x500UniqueIdentifier, not uniqueIdentifier.
5256 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
5259 *) Add an "init" command to the ENGINE config module and auto initialize
5260 ENGINEs. Without any "init" command the ENGINE will be initialized
5261 after all ctrl commands have been executed on it. If init=1 the
5262 ENGINE is initailized at that point (ctrls before that point are run
5263 on the uninitialized ENGINE and after on the initialized one). If
5264 init=0 then the ENGINE will not be iniatialized at all.
5267 *) Fix the 'app_verify_callback' interface so that the user-defined
5268 argument is actually passed to the callback: In the
5269 SSL_CTX_set_cert_verify_callback() prototype, the callback
5270 declaration has been changed from
5273 int (*cb)(X509_STORE_CTX *,void *);
5274 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
5275 i=s->ctx->app_verify_callback(&ctx)
5276 has been changed into
5277 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
5279 To update applications using SSL_CTX_set_cert_verify_callback(),
5280 a dummy argument can be added to their callback functions.
5281 [D. K. Smetters <smetters@parc.xerox.com>]
5283 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
5284 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
5286 *) Add and OPENSSL_LOAD_CONF define which will cause
5287 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
5288 This allows older applications to transparently support certain
5289 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
5290 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
5291 load the config file and OPENSSL_add_all_algorithms_conf() which will
5292 always load it have also been added.
5295 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
5296 Adjust NIDs and EVP layer.
5297 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
5299 *) Config modules support in openssl utility.
5301 Most commands now load modules from the config file,
5302 though in a few (such as version) this isn't done
5303 because it couldn't be used for anything.
5305 In the case of ca and req the config file used is
5306 the same as the utility itself: that is the -config
5307 command line option can be used to specify an
5311 *) Move default behaviour from OPENSSL_config(). If appname is NULL
5312 use "openssl_conf" if filename is NULL use default openssl config file.
5315 *) Add an argument to OPENSSL_config() to allow the use of an alternative
5316 config section name. Add a new flag to tolerate a missing config file
5317 and move code to CONF_modules_load_file().
5320 *) Support for crypto accelerator cards from Accelerated Encryption
5321 Processing, www.aep.ie. (Use engine 'aep')
5322 The support was copied from 0.9.6c [engine] and adapted/corrected
5323 to work with the new engine framework.
5324 [AEP Inc. and Richard Levitte]
5326 *) Support for SureWare crypto accelerator cards from Baltimore
5327 Technologies. (Use engine 'sureware')
5328 The support was copied from 0.9.6c [engine] and adapted
5329 to work with the new engine framework.
5332 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
5333 make the newer ENGINE framework commands for the CHIL engine work.
5334 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
5336 *) Make it possible to produce shared libraries on ReliantUNIX.
5337 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
5339 *) Add the configuration target debug-linux-ppro.
5340 Make 'openssl rsa' use the general key loading routines
5341 implemented in apps.c, and make those routines able to
5342 handle the key format FORMAT_NETSCAPE and the variant
5344 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
5346 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
5347 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
5349 *) Add -keyform to rsautl, and document -engine.
5350 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
5352 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
5353 BIO_R_NO_SUCH_FILE error code rather than the generic
5354 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
5357 *) Add new functions
5359 ERR_peek_last_error_line
5360 ERR_peek_last_error_line_data.
5361 These are similar to
5364 ERR_peek_error_line_data,
5365 but report on the latest error recorded rather than the first one
5366 still in the error queue.
5367 [Ben Laurie, Bodo Moeller]
5369 *) default_algorithms option in ENGINE config module. This allows things
5371 default_algorithms = ALL
5372 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
5375 *) Preliminary ENGINE config module.
5378 *) New experimental application configuration code.
5381 *) Change the AES code to follow the same name structure as all other
5382 symmetric ciphers, and behave the same way. Move everything to
5383 the directory crypto/aes, thereby obsoleting crypto/rijndael.
5384 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
5386 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
5387 [Ben Laurie and Theo de Raadt]
5389 *) Add option to output public keys in req command.
5390 [Massimiliano Pala madwolf@openca.org]
5392 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
5393 (up to about 10% better than before for P-192 and P-224).
5396 *) New functions/macros
5398 SSL_CTX_set_msg_callback(ctx, cb)
5399 SSL_CTX_set_msg_callback_arg(ctx, arg)
5400 SSL_set_msg_callback(ssl, cb)
5401 SSL_set_msg_callback_arg(ssl, arg)
5403 to request calling a callback function
5405 void cb(int write_p, int version, int content_type,
5406 const void *buf, size_t len, SSL *ssl, void *arg)
5408 whenever a protocol message has been completely received
5409 (write_p == 0) or sent (write_p == 1). Here 'version' is the
5410 protocol version according to which the SSL library interprets
5411 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
5412 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
5413 the content type as defined in the SSL 3.0/TLS 1.0 protocol
5414 specification (change_cipher_spec(20), alert(21), handshake(22)).
5415 'buf' and 'len' point to the actual message, 'ssl' to the
5416 SSL object, and 'arg' is the application-defined value set by
5417 SSL[_CTX]_set_msg_callback_arg().
5419 'openssl s_client' and 'openssl s_server' have new '-msg' options
5420 to enable a callback that displays all protocol messages.
5423 *) Change the shared library support so shared libraries are built as
5424 soon as the corresponding static library is finished, and thereby get
5425 openssl and the test programs linked against the shared library.
5426 This still only happens when the keyword "shard" has been given to
5427 the configuration scripts.
5429 NOTE: shared library support is still an experimental thing, and
5430 backward binary compatibility is still not guaranteed.
5431 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
5433 *) Add support for Subject Information Access extension.
5434 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
5436 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
5437 additional bytes when new memory had to be allocated, not just
5438 when reusing an existing buffer.
5441 *) New command line and configuration option 'utf8' for the req command.
5442 This allows field values to be specified as UTF8 strings.
5445 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
5446 runs for the former and machine-readable output for the latter.
5449 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
5450 of the e-mail address in the DN (i.e., it will go into a certificate
5451 extension only). The new configuration file option 'email_in_dn = no'
5452 has the same effect.
5453 [Massimiliano Pala madwolf@openca.org]
5455 *) Change all functions with names starting with des_ to be starting
5456 with DES_ instead. Add wrappers that are compatible with libdes,
5457 but are named _ossl_old_des_*. Finally, add macros that map the
5458 des_* symbols to the corresponding _ossl_old_des_* if libdes
5459 compatibility is desired. If OpenSSL 0.9.6c compatibility is
5460 desired, the des_* symbols will be mapped to DES_*, with one
5463 Since we provide two compatibility mappings, the user needs to
5464 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
5465 compatibility is desired. The default (i.e., when that macro
5466 isn't defined) is OpenSSL 0.9.6c compatibility.
5468 There are also macros that enable and disable the support of old
5469 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
5470 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
5471 are defined, the default will apply: to support the old des routines.
5473 In either case, one must include openssl/des.h to get the correct
5474 definitions. Do not try to just include openssl/des_old.h, that
5477 NOTE: This is a major break of an old API into a new one. Software
5478 authors are encouraged to switch to the DES_ style functions. Some
5479 time in the future, des_old.h and the libdes compatibility functions
5480 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
5481 default), and then completely removed.
5484 *) Test for certificates which contain unsupported critical extensions.
5485 If such a certificate is found during a verify operation it is
5486 rejected by default: this behaviour can be overridden by either
5487 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
5488 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
5489 X509_supported_extension() has also been added which returns 1 if a
5490 particular extension is supported.
5493 *) Modify the behaviour of EVP cipher functions in similar way to digests
5494 to retain compatibility with existing code.
5497 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
5498 compatibility with existing code. In particular the 'ctx' parameter does
5499 not have to be to be initialized before the call to EVP_DigestInit() and
5500 it is tidied up after a call to EVP_DigestFinal(). New function
5501 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
5502 EVP_MD_CTX_copy() changed to not require the destination to be
5503 initialized valid and new function EVP_MD_CTX_copy_ex() added which
5504 requires the destination to be valid.
5506 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
5507 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
5510 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
5511 so that complete 'Handshake' protocol structures are kept in memory
5512 instead of overwriting 'msg_type' and 'length' with 'body' data.
5515 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
5516 [Massimo Santin via Richard Levitte]
5518 *) Major restructuring to the underlying ENGINE code. This includes
5519 reduction of linker bloat, separation of pure "ENGINE" manipulation
5520 (initialisation, etc) from functionality dealing with implementations
5521 of specific crypto iterfaces. This change also introduces integrated
5522 support for symmetric ciphers and digest implementations - so ENGINEs
5523 can now accelerate these by providing EVP_CIPHER and EVP_MD
5524 implementations of their own. This is detailed in crypto/engine/README
5525 as it couldn't be adequately described here. However, there are a few
5526 API changes worth noting - some RSA, DSA, DH, and RAND functions that
5527 were changed in the original introduction of ENGINE code have now
5528 reverted back - the hooking from this code to ENGINE is now a good
5529 deal more passive and at run-time, operations deal directly with
5530 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
5531 dereferencing through an ENGINE pointer any more. Also, the ENGINE
5532 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
5533 they were not being used by the framework as there is no concept of a
5534 BIGNUM_METHOD and they could not be generalised to the new
5535 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
5536 ENGINE_cpy() has been removed as it cannot be consistently defined in
5540 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
5543 *) Change mkdef.pl to sort symbols that get the same entry number,
5544 and make sure the automatically generated functions ERR_load_*
5545 become part of libeay.num as well.
5548 *) New function SSL_renegotiate_pending(). This returns true once
5549 renegotiation has been requested (either SSL_renegotiate() call
5550 or HelloRequest/ClientHello received from the peer) and becomes
5551 false once a handshake has been completed.
5552 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
5553 sends a HelloRequest, but does not ensure that a handshake takes
5554 place. SSL_renegotiate_pending() is useful for checking if the
5555 client has followed the request.)
5558 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
5559 By default, clients may request session resumption even during
5560 renegotiation (if session ID contexts permit); with this option,
5561 session resumption is possible only in the first handshake.
5563 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
5564 more bits available for options that should not be part of
5565 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
5568 *) Add some demos for certificate and certificate request creation.
5571 *) Make maximum certificate chain size accepted from the peer application
5572 settable (SSL*_get/set_max_cert_list()), as proposed by
5573 "Douglas E. Engert" <deengert@anl.gov>.
5576 *) Add support for shared libraries for Unixware-7
5577 (Boyd Lynn Gerber <gerberb@zenez.com>).
5580 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
5581 be done prior to destruction. Use this to unload error strings from
5582 ENGINEs that load their own error strings. NB: This adds two new API
5583 functions to "get" and "set" this destroy handler in an ENGINE.
5586 *) Alter all existing ENGINE implementations (except "openssl" and
5587 "openbsd") to dynamically instantiate their own error strings. This
5588 makes them more flexible to be built both as statically-linked ENGINEs
5589 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
5590 Also, add stub code to each that makes building them as self-contained
5591 shared-libraries easier (see README.ENGINE).
5594 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
5595 implementations into applications that are completely implemented in
5596 self-contained shared-libraries. The "dynamic" ENGINE exposes control
5597 commands that can be used to configure what shared-library to load and
5598 to control aspects of the way it is handled. Also, made an update to
5599 the README.ENGINE file that brings its information up-to-date and
5600 provides some information and instructions on the "dynamic" ENGINE
5601 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
5604 *) Make it possible to unload ranges of ERR strings with a new
5605 "ERR_unload_strings" function.
5608 *) Add a copy() function to EVP_MD.
5611 *) Make EVP_MD routines take a context pointer instead of just the
5612 md_data void pointer.
5615 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
5616 that the digest can only process a single chunk of data
5617 (typically because it is provided by a piece of
5618 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
5619 is only going to provide a single chunk of data, and hence the
5620 framework needn't accumulate the data for oneshot drivers.
5623 *) As with "ERR", make it possible to replace the underlying "ex_data"
5624 functions. This change also alters the storage and management of global
5625 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
5626 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
5627 index counters. The API functions that use this state have been changed
5628 to take a "class_index" rather than pointers to the class's local STACK
5629 and counter, and there is now an API function to dynamically create new
5630 classes. This centralisation allows us to (a) plug a lot of the
5631 thread-safety problems that existed, and (b) makes it possible to clean
5632 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
5633 such data would previously have always leaked in application code and
5634 workarounds were in place to make the memory debugging turn a blind eye
5635 to it. Application code that doesn't use this new function will still
5636 leak as before, but their memory debugging output will announce it now
5637 rather than letting it slide.
5639 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
5640 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
5641 has a return value to indicate success or failure.
5644 *) Make it possible to replace the underlying "ERR" functions such that the
5645 global state (2 LHASH tables and 2 locks) is only used by the "default"
5646 implementation. This change also adds two functions to "get" and "set"
5647 the implementation prior to it being automatically set the first time
5648 any other ERR function takes place. Ie. an application can call "get",
5649 pass the return value to a module it has just loaded, and that module
5650 can call its own "set" function using that value. This means the
5651 module's "ERR" operations will use (and modify) the error state in the
5652 application and not in its own statically linked copy of OpenSSL code.
5655 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
5656 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
5657 the operation, and provides a more encapsulated way for external code
5658 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
5659 to use these functions rather than manually incrementing the counts.
5661 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
5664 *) Add EVP test program.
5667 *) Add symmetric cipher support to ENGINE. Expect the API to change!
5670 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
5671 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
5672 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
5673 These allow a CRL to be built without having to access X509_CRL fields
5674 directly. Modify 'ca' application to use new functions.
5677 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
5678 bug workarounds. Rollback attack detection is a security feature.
5679 The problem will only arise on OpenSSL servers when TLSv1 is not
5680 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
5681 Software authors not wanting to support TLSv1 will have special reasons
5682 for their choice and can explicitly enable this option.
5683 [Bodo Moeller, Lutz Jaenicke]
5685 *) Rationalise EVP so it can be extended: don't include a union of
5686 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
5687 (similar to those existing for EVP_CIPHER_CTX).
5692 EVP_MD_CTX_init(&md); /* new function call */
5693 EVP_DigestInit(&md, EVP_sha1());
5694 EVP_DigestUpdate(&md, in, len);
5695 EVP_DigestFinal(&md, out, NULL);
5696 EVP_MD_CTX_cleanup(&md); /* new function call */
5700 *) Make DES key schedule conform to the usual scheme, as well as
5701 correcting its structure. This means that calls to DES functions
5702 now have to pass a pointer to a des_key_schedule instead of a
5703 plain des_key_schedule (which was actually always a pointer
5706 des_key_schedule ks;
5708 des_set_key_checked(..., &ks);
5709 des_ncbc_encrypt(..., &ks, ...);
5711 (Note that a later change renames 'des_...' into 'DES_...'.)
5714 *) Initial reduction of linker bloat: the use of some functions, such as
5715 PEM causes large amounts of unused functions to be linked in due to
5716 poor organisation. For example pem_all.c contains every PEM function
5717 which has a knock on effect of linking in large amounts of (unused)
5718 ASN1 code. Grouping together similar functions and splitting unrelated
5719 functions prevents this.
5722 *) Cleanup of EVP macros.
5725 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
5726 correct _ecb suffix.
5729 *) Add initial OCSP responder support to ocsp application. The
5730 revocation information is handled using the text based index
5731 use by the ca application. The responder can either handle
5732 requests generated internally, supplied in files (for example
5733 via a CGI script) or using an internal minimal server.
5736 *) Add configuration choices to get zlib compression for TLS.
5739 *) Changes to Kerberos SSL for RFC 2712 compliance:
5740 1. Implemented real KerberosWrapper, instead of just using
5741 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
5742 2. Implemented optional authenticator field of KerberosWrapper.
5744 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
5745 and authenticator structs; see crypto/krb5/.
5747 Generalized Kerberos calls to support multiple Kerberos libraries.
5748 [Vern Staats <staatsvr@asc.hpc.mil>,
5749 Jeffrey Altman <jaltman@columbia.edu>
5750 via Richard Levitte]
5752 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
5753 already does with RSA. testdsa.h now has 'priv_key/pub_key'
5754 values for each of the key sizes rather than having just
5755 parameters (and 'speed' generating keys each time).
5758 *) Speed up EVP routines.
5761 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
5762 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
5763 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
5764 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
5766 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
5767 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
5768 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
5771 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
5773 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
5776 *) Added the OS2-EMX target.
5777 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
5779 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
5780 to support NCONF routines in extension code. New function CONF_set_nconf()
5781 to allow functions which take an NCONF to also handle the old LHASH
5782 structure: this means that the old CONF compatible routines can be
5783 retained (in particular wrt extensions) without having to duplicate the
5784 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
5787 *) Enhance the general user interface with mechanisms for inner control
5788 and with possibilities to have yes/no kind of prompts.
5791 *) Change all calls to low level digest routines in the library and
5792 applications to use EVP. Add missing calls to HMAC_cleanup() and
5793 don't assume HMAC_CTX can be copied using memcpy().
5794 [Verdon Walker <VWalker@novell.com>, Steve Henson]
5796 *) Add the possibility to control engines through control names but with
5797 arbitrary arguments instead of just a string.
5798 Change the key loaders to take a UI_METHOD instead of a callback
5799 function pointer. NOTE: this breaks binary compatibility with earlier
5800 versions of OpenSSL [engine].
5801 Adapt the nCipher code for these new conditions and add a card insertion
5805 *) Enhance the general user interface with mechanisms to better support
5806 dialog box interfaces, application-defined prompts, the possibility
5807 to use defaults (for example default passwords from somewhere else)
5808 and interrupts/cancellations.
5811 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
5812 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
5815 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
5816 tidy up some unnecessarily weird code in 'sk_new()').
5817 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
5819 *) Change the key loading routines for ENGINEs to use the same kind
5820 callback (pem_password_cb) as all other routines that need this
5824 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
5825 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
5826 than this minimum value is recommended.
5829 *) New random seeder for OpenVMS, using the system process statistics
5830 that are easily reachable.
5833 *) Windows apparently can't transparently handle global
5834 variables defined in DLLs. Initialisations such as:
5836 const ASN1_ITEM *it = &ASN1_INTEGER_it;
5838 wont compile. This is used by the any applications that need to
5839 declare their own ASN1 modules. This was fixed by adding the option
5840 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
5841 needed for static libraries under Win32.
5844 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
5845 setting of purpose and trust fields. New X509_STORE trust and
5846 purpose functions and tidy up setting in other SSL functions.
5849 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
5850 structure. These are inherited by X509_STORE_CTX when it is
5851 initialised. This allows various defaults to be set in the
5852 X509_STORE structure (such as flags for CRL checking and custom
5853 purpose or trust settings) for functions which only use X509_STORE_CTX
5854 internally such as S/MIME.
5856 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
5857 trust settings if they are not set in X509_STORE. This allows X509_STORE
5858 purposes and trust (in S/MIME for example) to override any set by default.
5860 Add command line options for CRL checking to smime, s_client and s_server
5864 *) Initial CRL based revocation checking. If the CRL checking flag(s)
5865 are set then the CRL is looked up in the X509_STORE structure and
5866 its validity and signature checked, then if the certificate is found
5867 in the CRL the verify fails with a revoked error.
5869 Various new CRL related callbacks added to X509_STORE_CTX structure.
5871 Command line options added to 'verify' application to support this.
5873 This needs some additional work, such as being able to handle multiple
5874 CRLs with different times, extension based lookup (rather than just
5875 by subject name) and ultimately more complete V2 CRL extension
5879 *) Add a general user interface API (crypto/ui/). This is designed
5880 to replace things like des_read_password and friends (backward
5881 compatibility functions using this new API are provided).
5882 The purpose is to remove prompting functions from the DES code
5883 section as well as provide for prompting through dialog boxes in
5884 a window system and the like.
5887 *) Add "ex_data" support to ENGINE so implementations can add state at a
5888 per-structure level rather than having to store it globally.
5891 *) Make it possible for ENGINE structures to be copied when retrieved by
5892 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
5893 This causes the "original" ENGINE structure to act like a template,
5894 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
5895 operational state can be localised to each ENGINE structure, despite the
5896 fact they all share the same "methods". New ENGINE structures returned in
5897 this case have no functional references and the return value is the single
5898 structural reference. This matches the single structural reference returned
5899 by ENGINE_by_id() normally, when it is incremented on the pre-existing
5903 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
5904 needs to match any other type at all we need to manually clear the
5908 *) Changes to the "openssl engine" utility to include;
5909 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
5910 about an ENGINE's available control commands.
5911 - executing control commands from command line arguments using the
5912 '-pre' and '-post' switches. '-post' is only used if '-t' is
5913 specified and the ENGINE is successfully initialised. The syntax for
5914 the individual commands are colon-separated, for example;
5915 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
5918 *) New dynamic control command support for ENGINEs. ENGINEs can now
5919 declare their own commands (numbers), names (strings), descriptions,
5920 and input types for run-time discovery by calling applications. A
5921 subset of these commands are implicitly classed as "executable"
5922 depending on their input type, and only these can be invoked through
5923 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
5924 can be based on user input, config files, etc). The distinction is
5925 that "executable" commands cannot return anything other than a boolean
5926 result and can only support numeric or string input, whereas some
5927 discoverable commands may only be for direct use through
5928 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
5929 pointers, or other custom uses. The "executable" commands are to
5930 support parameterisations of ENGINE behaviour that can be
5931 unambiguously defined by ENGINEs and used consistently across any
5932 OpenSSL-based application. Commands have been added to all the
5933 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
5934 control over shared-library paths without source code alterations.
5937 *) Changed all ENGINE implementations to dynamically allocate their
5938 ENGINEs rather than declaring them statically. Apart from this being
5939 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
5940 this also allows the implementations to compile without using the
5941 internal engine_int.h header.
5944 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
5945 'const' value. Any code that should be able to modify a RAND_METHOD
5946 should already have non-const pointers to it (ie. they should only
5947 modify their own ones).
5950 *) Made a variety of little tweaks to the ENGINE code.
5951 - "atalla" and "ubsec" string definitions were moved from header files
5952 to C code. "nuron" string definitions were placed in variables
5953 rather than hard-coded - allowing parameterisation of these values
5954 later on via ctrl() commands.
5955 - Removed unused "#if 0"'d code.
5956 - Fixed engine list iteration code so it uses ENGINE_free() to release
5957 structural references.
5958 - Constified the RAND_METHOD element of ENGINE structures.
5959 - Constified various get/set functions as appropriate and added
5960 missing functions (including a catch-all ENGINE_cpy that duplicates
5961 all ENGINE values onto a new ENGINE except reference counts/state).
5962 - Removed NULL parameter checks in get/set functions. Setting a method
5963 or function to NULL is a way of cancelling out a previously set
5964 value. Passing a NULL ENGINE parameter is just plain stupid anyway
5965 and doesn't justify the extra error symbols and code.
5966 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
5967 flags from engine_int.h to engine.h.
5968 - Changed prototypes for ENGINE handler functions (init(), finish(),
5969 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
5972 *) Implement binary inversion algorithm for BN_mod_inverse in addition
5973 to the algorithm using long division. The binary algorithm can be
5974 used only if the modulus is odd. On 32-bit systems, it is faster
5975 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
5976 roughly 5-15% for 256-bit moduli), so we use it only for moduli
5977 up to 450 bits. In 64-bit environments, the binary algorithm
5978 appears to be advantageous for much longer moduli; here we use it
5979 for moduli up to 2048 bits.
5982 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
5983 could not support the combine flag in choice fields.
5986 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
5987 extensions from a certificate request to the certificate.
5990 *) Allow multiple 'certopt' and 'nameopt' options to be separated
5991 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
5992 file: this allows the display of the certificate about to be
5993 signed to be customised, to allow certain fields to be included
5994 or excluded and extension details. The old system didn't display
5995 multicharacter strings properly, omitted fields not in the policy
5996 and couldn't display additional details such as extensions.
5999 *) Function EC_POINTs_mul for multiple scalar multiplication
6000 of an arbitrary number of elliptic curve points
6001 \sum scalars[i]*points[i],
6002 optionally including the generator defined for the EC_GROUP:
6003 scalar*generator + \sum scalars[i]*points[i].
6005 EC_POINT_mul is a simple wrapper function for the typical case
6006 that the point list has just one item (besides the optional
6010 *) First EC_METHODs for curves over GF(p):
6012 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
6013 operations and provides various method functions that can also
6014 operate with faster implementations of modular arithmetic.
6016 EC_GFp_mont_method() reuses most functions that are part of
6017 EC_GFp_simple_method, but uses Montgomery arithmetic.
6019 [Bodo Moeller; point addition and point doubling
6020 implementation directly derived from source code provided by
6021 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
6023 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
6024 crypto/ec/ec_lib.c):
6026 Curves are EC_GROUP objects (with an optional group generator)
6027 based on EC_METHODs that are built into the library.
6029 Points are EC_POINT objects based on EC_GROUP objects.
6031 Most of the framework would be able to handle curves over arbitrary
6032 finite fields, but as there are no obvious types for fields other
6033 than GF(p), some functions are limited to that for now.
6036 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
6037 that the file contains a complete HTTP response.
6040 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
6041 change the def and num file printf format specifier from "%-40sXXX"
6042 to "%-39s XXX". The latter will always guarantee a space after the
6043 field while the former will cause them to run together if the field
6044 is 40 of more characters long.
6047 *) Constify the cipher and digest 'method' functions and structures
6048 and modify related functions to take constant EVP_MD and EVP_CIPHER
6052 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
6053 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
6056 *) Modify EVP_Digest*() routines so they now return values. Although the
6057 internal software routines can never fail additional hardware versions
6061 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
6063 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
6064 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
6067 ERR_R_NESTED_ASN1_ERROR
6069 ERR_R_MISSING_ASN1_EOS
6070 were 4 .. 9, conflicting with
6071 ERR_LIB_RSA (= ERR_R_RSA_LIB)
6073 ERR_LIB_PEM (= ERR_R_PEM_LIB).
6074 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
6076 Add new error code 'ERR_R_INTERNAL_ERROR'.
6079 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
6083 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
6084 sets the subject name for a new request or supersedes the
6085 subject name in a given request. Formats that can be parsed are
6086 'CN=Some Name, OU=myOU, C=IT'
6088 'CN=Some Name/OU=myOU/C=IT'.
6090 Add options '-batch' and '-verbose' to 'openssl req'.
6091 [Massimiliano Pala <madwolf@hackmasters.net>]
6093 *) Introduce the possibility to access global variables through
6094 functions on platform were that's the best way to handle exporting
6095 global variables in shared libraries. To enable this functionality,
6096 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
6097 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
6098 is normally done by Configure or something similar).
6100 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
6101 in the source file (foo.c) like this:
6103 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
6104 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
6106 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
6107 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
6109 OPENSSL_DECLARE_GLOBAL(int,foo);
6110 #define foo OPENSSL_GLOBAL_REF(foo)
6111 OPENSSL_DECLARE_GLOBAL(double,bar);
6112 #define bar OPENSSL_GLOBAL_REF(bar)
6114 The #defines are very important, and therefore so is including the
6115 header file everywhere where the defined globals are used.
6117 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
6118 of ASN.1 items, but that structure is a bit different.
6120 The largest change is in util/mkdef.pl which has been enhanced with
6121 better and easier to understand logic to choose which symbols should
6122 go into the Windows .def files as well as a number of fixes and code
6123 cleanup (among others, algorithm keywords are now sorted
6124 lexicographically to avoid constant rewrites).
6127 *) In BN_div() keep a copy of the sign of 'num' before writing the
6128 result to 'rm' because if rm==num the value will be overwritten
6129 and produce the wrong result if 'num' is negative: this caused
6130 problems with BN_mod() and BN_nnmod().
6133 *) Function OCSP_request_verify(). This checks the signature on an
6134 OCSP request and verifies the signer certificate. The signer
6135 certificate is just checked for a generic purpose and OCSP request
6139 *) Add OCSP_check_validity() function to check the validity of OCSP
6140 responses. OCSP responses are prepared in real time and may only
6141 be a few seconds old. Simply checking that the current time lies
6142 between thisUpdate and nextUpdate max reject otherwise valid responses
6143 caused by either OCSP responder or client clock inaccuracy. Instead
6144 we allow thisUpdate and nextUpdate to fall within a certain period of
6145 the current time. The age of the response can also optionally be
6146 checked. Two new options -validity_period and -status_age added to
6150 *) If signature or public key algorithm is unrecognized print out its
6151 OID rather that just UNKNOWN.
6154 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
6155 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
6156 ID to be generated from the issuer certificate alone which can then be
6157 passed to OCSP_id_issuer_cmp().
6160 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
6161 ASN1 modules to export functions returning ASN1_ITEM pointers
6162 instead of the ASN1_ITEM structures themselves. This adds several
6163 new macros which allow the underlying ASN1 function/structure to
6164 be accessed transparently. As a result code should not use ASN1_ITEM
6165 references directly (such as &X509_it) but instead use the relevant
6166 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
6167 use of the new ASN1 code on platforms where exporting structures
6168 is problematical (for example in shared libraries) but exporting
6169 functions returning pointers to structures is not.
6172 *) Add support for overriding the generation of SSL/TLS session IDs.
6173 These callbacks can be registered either in an SSL_CTX or per SSL.
6174 The purpose of this is to allow applications to control, if they wish,
6175 the arbitrary values chosen for use as session IDs, particularly as it
6176 can be useful for session caching in multiple-server environments. A
6177 command-line switch for testing this (and any client code that wishes
6178 to use such a feature) has been added to "s_server".
6179 [Geoff Thorpe, Lutz Jaenicke]
6181 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
6182 of the form '#if defined(...) || defined(...) || ...' and
6183 '#if !defined(...) && !defined(...) && ...'. This also avoids
6184 the growing number of special cases it was previously handling.
6187 *) Make all configuration macros available for application by making
6188 sure they are available in opensslconf.h, by giving them names starting
6189 with "OPENSSL_" to avoid conflicts with other packages and by making
6190 sure e_os2.h will cover all platform-specific cases together with
6192 Additionally, it is now possible to define configuration/platform-
6193 specific names (called "system identities"). In the C code, these
6194 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
6195 macro with the name beginning with "OPENSSL_SYS_", which is determined
6196 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
6200 *) New option -set_serial to 'req' and 'x509' this allows the serial
6201 number to use to be specified on the command line. Previously self
6202 signed certificates were hard coded with serial number 0 and the
6203 CA options of 'x509' had to use a serial number in a file which was
6207 *) New options to 'ca' utility to support V2 CRL entry extensions.
6208 Currently CRL reason, invalidity date and hold instruction are
6209 supported. Add new CRL extensions to V3 code and some new objects.
6212 *) New function EVP_CIPHER_CTX_set_padding() this is used to
6213 disable standard block padding (aka PKCS#5 padding) in the EVP
6214 API, which was previously mandatory. This means that the data is
6215 not padded in any way and so the total length much be a multiple
6216 of the block size, otherwise an error occurs.
6219 *) Initial (incomplete) OCSP SSL support.
6222 *) New function OCSP_parse_url(). This splits up a URL into its host,
6223 port and path components: primarily to parse OCSP URLs. New -url
6224 option to ocsp utility.
6227 *) New nonce behavior. The return value of OCSP_check_nonce() now
6228 reflects the various checks performed. Applications can decide
6229 whether to tolerate certain situations such as an absent nonce
6230 in a response when one was present in a request: the ocsp application
6231 just prints out a warning. New function OCSP_add1_basic_nonce()
6232 this is to allow responders to include a nonce in a response even if
6233 the request is nonce-less.
6236 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
6237 skipped when using openssl x509 multiple times on a single input file,
6238 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
6241 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
6242 set string type: to handle setting ASN1_TIME structures. Fix ca
6243 utility to correctly initialize revocation date of CRLs.
6246 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
6247 the clients preferred ciphersuites and rather use its own preferences.
6248 Should help to work around M$ SGC (Server Gated Cryptography) bug in
6249 Internet Explorer by ensuring unchanged hash method during stepup.
6250 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
6253 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
6254 to aes and add a new 'exist' option to print out symbols that don't
6258 *) Additional options to ocsp utility to allow flags to be set and
6259 additional certificates supplied.
6262 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
6263 OCSP client a number of certificate to only verify the response
6267 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
6268 handle the new API. Currently only ECB, CBC modes supported. Add new
6271 Add TLS AES ciphersuites as described in RFC3268, "Advanced
6272 Encryption Standard (AES) Ciphersuites for Transport Layer
6273 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
6274 not enabled by default and were not part of the "ALL" ciphersuite
6275 alias because they were not yet official; they could be
6276 explicitly requested by specifying the "AESdraft" ciphersuite
6277 group alias. In the final release of OpenSSL 0.9.7, the group
6278 alias is called "AES" and is part of "ALL".)
6279 [Ben Laurie, Steve Henson, Bodo Moeller]
6281 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
6282 request to response.
6285 *) Functions for OCSP responders. OCSP_request_onereq_count(),
6286 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
6287 extract information from a certificate request. OCSP_response_create()
6288 creates a response and optionally adds a basic response structure.
6289 OCSP_basic_add1_status() adds a complete single response to a basic
6290 response and returns the OCSP_SINGLERESP structure just added (to allow
6291 extensions to be included for example). OCSP_basic_add1_cert() adds a
6292 certificate to a basic response and OCSP_basic_sign() signs a basic
6293 response with various flags. New helper functions ASN1_TIME_check()
6294 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
6295 (converts ASN1_TIME to GeneralizedTime).
6298 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
6299 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
6300 structure from a certificate. X509_pubkey_digest() digests the public_key
6301 contents: this is used in various key identifiers.
6304 *) Make sk_sort() tolerate a NULL argument.
6305 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
6307 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
6308 passed by the function are trusted implicitly. If any of them signed the
6309 response then it is assumed to be valid and is not verified.
6312 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
6313 to data. This was previously part of the PKCS7 ASN1 code. This
6314 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
6315 [Steve Henson, reported by Kenneth R. Robinette
6316 <support@securenetterm.com>]
6318 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
6319 routines: without these tracing memory leaks is very painful.
6320 Fix leaks in PKCS12 and PKCS7 routines.
6323 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
6324 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
6325 effectively meant GeneralizedTime would never be used. Now it
6326 is initialised to -1 but X509_time_adj() now has to check the value
6327 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
6328 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
6329 [Steve Henson, reported by Kenneth R. Robinette
6330 <support@securenetterm.com>]
6332 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
6333 result in a zero length in the ASN1_INTEGER structure which was
6334 not consistent with the structure when d2i_ASN1_INTEGER() was used
6335 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
6336 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
6337 where it did not print out a minus for negative ASN1_INTEGER.
6340 *) Add summary printout to ocsp utility. The various functions which
6341 convert status values to strings have been renamed to:
6342 OCSP_response_status_str(), OCSP_cert_status_str() and
6343 OCSP_crl_reason_str() and are no longer static. New options
6344 to verify nonce values and to disable verification. OCSP response
6345 printout format cleaned up.
6348 *) Add additional OCSP certificate checks. These are those specified
6349 in RFC2560. This consists of two separate checks: the CA of the
6350 certificate being checked must either be the OCSP signer certificate
6351 or the issuer of the OCSP signer certificate. In the latter case the
6352 OCSP signer certificate must contain the OCSP signing extended key
6353 usage. This check is performed by attempting to match the OCSP
6354 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
6355 in the OCSP_CERTID structures of the response.
6358 *) Initial OCSP certificate verification added to OCSP_basic_verify()
6359 and related routines. This uses the standard OpenSSL certificate
6360 verify routines to perform initial checks (just CA validity) and
6361 to obtain the certificate chain. Then additional checks will be
6362 performed on the chain. Currently the root CA is checked to see
6363 if it is explicitly trusted for OCSP signing. This is used to set
6364 a root CA as a global signing root: that is any certificate that
6365 chains to that CA is an acceptable OCSP signing certificate.
6368 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
6369 extensions from a separate configuration file.
6370 As when reading extensions from the main configuration file,
6371 the '-extensions ...' option may be used for specifying the
6373 [Massimiliano Pala <madwolf@comune.modena.it>]
6375 *) New OCSP utility. Allows OCSP requests to be generated or
6376 read. The request can be sent to a responder and the output
6377 parsed, outputed or printed in text form. Not complete yet:
6378 still needs to check the OCSP response validity.
6381 *) New subcommands for 'openssl ca':
6382 'openssl ca -status <serial>' prints the status of the cert with
6383 the given serial number (according to the index file).
6384 'openssl ca -updatedb' updates the expiry status of certificates
6386 [Massimiliano Pala <madwolf@comune.modena.it>]
6388 *) New '-newreq-nodes' command option to CA.pl. This is like
6389 '-newreq', but calls 'openssl req' with the '-nodes' option
6390 so that the resulting key is not encrypted.
6391 [Damien Miller <djm@mindrot.org>]
6393 *) New configuration for the GNU Hurd.
6394 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
6396 *) Initial code to implement OCSP basic response verify. This
6397 is currently incomplete. Currently just finds the signer's
6398 certificate and verifies the signature on the response.
6401 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
6402 value of OPENSSLDIR. This is available via the new '-d' option
6403 to 'openssl version', and is also included in 'openssl version -a'.
6406 *) Allowing defining memory allocation callbacks that will be given
6407 file name and line number information in additional arguments
6408 (a const char* and an int). The basic functionality remains, as
6409 well as the original possibility to just replace malloc(),
6410 realloc() and free() by functions that do not know about these
6411 additional arguments. To register and find out the current
6412 settings for extended allocation functions, the following
6413 functions are provided:
6415 CRYPTO_set_mem_ex_functions
6416 CRYPTO_set_locked_mem_ex_functions
6417 CRYPTO_get_mem_ex_functions
6418 CRYPTO_get_locked_mem_ex_functions
6420 These work the same way as CRYPTO_set_mem_functions and friends.
6421 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
6422 extended allocation function is enabled.
6423 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
6424 a conventional allocation function is enabled.
6425 [Richard Levitte, Bodo Moeller]
6427 *) Finish off removing the remaining LHASH function pointer casts.
6428 There should no longer be any prototype-casting required when using
6429 the LHASH abstraction, and any casts that remain are "bugs". See
6430 the callback types and macros at the head of lhash.h for details
6431 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
6434 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
6435 If /dev/[u]random devices are not available or do not return enough
6436 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
6438 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
6439 /etc/entropy will be queried once each in this sequence, quering stops
6440 when enough entropy was collected without querying more sockets.
6443 *) Change the Unix RAND_poll() variant to be able to poll several
6444 random devices, as specified by DEVRANDOM, until a sufficient amount
6445 of data has been collected. We spend at most 10 ms on each file
6446 (select timeout) and read in non-blocking mode. DEVRANDOM now
6447 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
6448 (previously it was just the string "/dev/urandom"), so on typical
6449 platforms the 10 ms delay will never occur.
6450 Also separate out the Unix variant to its own file, rand_unix.c.
6451 For VMS, there's a currently-empty rand_vms.c.
6454 *) Move OCSP client related routines to ocsp_cl.c. These
6455 provide utility functions which an application needing
6456 to issue a request to an OCSP responder and analyse the
6457 response will typically need: as opposed to those which an
6458 OCSP responder itself would need which will be added later.
6460 OCSP_request_sign() signs an OCSP request with an API similar
6461 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
6462 response. OCSP_response_get1_basic() extracts basic response
6463 from response. OCSP_resp_find_status(): finds and extracts status
6464 information from an OCSP_CERTID structure (which will be created
6465 when the request structure is built). These are built from lower
6466 level functions which work on OCSP_SINGLERESP structures but
6467 wont normally be used unless the application wishes to examine
6468 extensions in the OCSP response for example.
6470 Replace nonce routines with a pair of functions.
6471 OCSP_request_add1_nonce() adds a nonce value and optionally
6472 generates a random value. OCSP_check_nonce() checks the
6473 validity of the nonce in an OCSP response.
6476 *) Change function OCSP_request_add() to OCSP_request_add0_id().
6477 This doesn't copy the supplied OCSP_CERTID and avoids the
6478 need to free up the newly created id. Change return type
6479 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
6480 This can then be used to add extensions to the request.
6481 Deleted OCSP_request_new(), since most of its functionality
6482 is now in OCSP_REQUEST_new() (and the case insensitive name
6483 clash) apart from the ability to set the request name which
6484 will be added elsewhere.
6487 *) Update OCSP API. Remove obsolete extensions argument from
6488 various functions. Extensions are now handled using the new
6489 OCSP extension code. New simple OCSP HTTP function which
6490 can be used to send requests and parse the response.
6493 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
6494 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
6495 uses the special reorder version of SET OF to sort the attributes
6496 and reorder them to match the encoded order. This resolves a long
6497 standing problem: a verify on a PKCS7 structure just after signing
6498 it used to fail because the attribute order did not match the
6499 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
6500 it uses the received order. This is necessary to tolerate some broken
6501 software that does not order SET OF. This is handled by encoding
6502 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
6503 to produce the required SET OF.
6506 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
6507 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
6508 files to get correct declarations of the ASN.1 item variables.
6511 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
6512 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
6513 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
6514 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
6515 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
6516 ASN1_ITEM and no wrapper functions.
6519 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
6520 replace the old function pointer based I/O routines. Change most of
6521 the *_d2i_bio() and *_d2i_fp() functions to use these.
6524 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
6525 lines, recognice more "algorithms" that can be deselected, and make
6526 it complain about algorithm deselection that isn't recognised.
6529 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
6530 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
6531 to use new functions. Add NO_ASN1_OLD which can be set to remove
6532 some old style ASN1 functions: this can be used to determine if old
6533 code will still work when these eventually go away.
6536 *) New extension functions for OCSP structures, these follow the
6537 same conventions as certificates and CRLs.
6540 *) New function X509V3_add1_i2d(). This automatically encodes and
6541 adds an extension. Its behaviour can be customised with various
6542 flags to append, replace or delete. Various wrappers added for
6543 certifcates and CRLs.
6546 *) Fix to avoid calling the underlying ASN1 print routine when
6547 an extension cannot be parsed. Correct a typo in the
6548 OCSP_SERVICELOC extension. Tidy up print OCSP format.
6551 *) Make mkdef.pl parse some of the ASN1 macros and add appropriate
6552 entries for variables.
6555 *) Add functionality to apps/openssl.c for detecting locking
6556 problems: As the program is single-threaded, all we have
6557 to do is register a locking callback using an array for
6558 storing which locks are currently held by the program.
6561 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
6562 SSL_get_ex_data_X509_STORE_idx(), which is used in
6563 ssl_verify_cert_chain() and thus can be called at any time
6564 during TLS/SSL handshakes so that thread-safety is essential.
6565 Unfortunately, the ex_data design is not at all suited
6566 for multi-threaded use, so it probably should be abolished.
6569 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
6570 [Broadcom, tweaked and integrated by Geoff Thorpe]
6572 *) Move common extension printing code to new function
6573 X509V3_print_extensions(). Reorganise OCSP print routines and
6574 implement some needed OCSP ASN1 functions. Add OCSP extensions.
6577 *) New function X509_signature_print() to remove duplication in some
6581 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
6582 set (this was treated exactly the same as SET OF previously). This
6583 is used to reorder the STACK representing the structure to match the
6584 encoding. This will be used to get round a problem where a PKCS7
6585 structure which was signed could not be verified because the STACK
6586 order did not reflect the encoded order.
6589 *) Reimplement the OCSP ASN1 module using the new code.
6592 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
6593 for its ASN1 operations. The old style function pointers still exist
6594 for now but they will eventually go away.
6597 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
6598 completely replaces the old ASN1 functionality with a table driven
6599 encoder and decoder which interprets an ASN1_ITEM structure describing
6600 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
6601 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
6602 has also been converted to the new form.
6605 *) Change BN_mod_exp_recp so that negative moduli are tolerated
6606 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
6607 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
6608 for negative moduli.
6611 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
6612 of not touching the result's sign bit.
6615 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
6619 *) Changed the LHASH code to use prototypes for callbacks, and created
6620 macros to declare and implement thin (optionally static) functions
6621 that provide type-safety and avoid function pointer casting for the
6622 type-specific callbacks.
6625 *) Added Kerberos Cipher Suites to be used with TLS, as written in
6627 [Veers Staats <staatsvr@asc.hpc.mil>,
6628 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
6630 *) Reformat the FAQ so the different questions and answers can be divided
6631 in sections depending on the subject.
6634 *) Have the zlib compression code load ZLIB.DLL dynamically under
6638 *) New function BN_mod_sqrt for computing square roots modulo a prime
6639 (using the probabilistic Tonelli-Shanks algorithm unless
6640 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
6641 be handled deterministically).
6642 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
6644 *) Make BN_mod_inverse faster by explicitly handling small quotients
6645 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
6646 512 bits], about 30% for larger ones [1024 or 2048 bits].)
6649 *) New function BN_kronecker.
6652 *) Fix BN_gcd so that it works on negative inputs; the result is
6653 positive unless both parameters are zero.
6654 Previously something reasonably close to an infinite loop was
6655 possible because numbers could be growing instead of shrinking
6656 in the implementation of Euclid's algorithm.
6659 *) Fix BN_is_word() and BN_is_one() macros to take into account the
6660 sign of the number in question.
6662 Fix BN_is_word(a,w) to work correctly for w == 0.
6664 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
6665 because its test if the absolute value of 'a' equals 'w'.
6666 Note that BN_abs_is_word does *not* handle w == 0 reliably;
6667 it exists mostly for use in the implementations of BN_is_zero(),
6668 BN_is_one(), and BN_is_word().
6671 *) New function BN_swap.
6674 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
6675 the exponentiation functions are more likely to produce reasonable
6676 results on negative inputs.
6679 *) Change BN_mod_mul so that the result is always non-negative.
6680 Previously, it could be negative if one of the factors was negative;
6681 I don't think anyone really wanted that behaviour.
6684 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
6685 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
6686 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
6687 and add new functions:
6696 BN_mod_lshift1_quick
6700 These functions always generate non-negative results.
6702 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
6703 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
6705 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
6706 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
6707 be reduced modulo m.
6708 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
6711 The following entry accidentally appeared in the CHANGES file
6712 distributed with OpenSSL 0.9.7. The modifications described in
6713 it do *not* apply to OpenSSL 0.9.7.
6715 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
6716 was actually never needed) and in BN_mul(). The removal in BN_mul()
6717 required a small change in bn_mul_part_recursive() and the addition
6718 of the functions bn_cmp_part_words(), bn_sub_part_words() and
6719 bn_add_part_words(), which do the same thing as bn_cmp_words(),
6720 bn_sub_words() and bn_add_words() except they take arrays with
6725 *) In 'openssl passwd', verify passwords read from the terminal
6726 unless the '-salt' option is used (which usually means that
6727 verification would just waste user's time since the resulting
6728 hash is going to be compared with some given password hash)
6729 or the new '-noverify' option is used.
6731 This is an incompatible change, but it does not affect
6732 non-interactive use of 'openssl passwd' (passwords on the command
6733 line, '-stdin' option, '-in ...' option) and thus should not
6737 *) Remove all references to RSAref, since there's no more need for it.
6740 *) Make DSO load along a path given through an environment variable
6741 (SHLIB_PATH) with shl_load().
6744 *) Constify the ENGINE code as a result of BIGNUM constification.
6745 Also constify the RSA code and most things related to it. In a
6746 few places, most notable in the depth of the ASN.1 code, ugly
6747 casts back to non-const were required (to be solved at a later
6751 *) Make it so the openssl application has all engines loaded by default.
6754 *) Constify the BIGNUM routines a little more.
6757 *) Add the following functions:
6759 ENGINE_load_cswift()
6761 ENGINE_load_atalla()
6763 ENGINE_load_builtin_engines()
6765 That way, an application can itself choose if external engines that
6766 are built-in in OpenSSL shall ever be used or not. The benefit is
6767 that applications won't have to be linked with libdl or other dso
6768 libraries unless it's really needed.
6770 Changed 'openssl engine' to load all engines on demand.
6771 Changed the engine header files to avoid the duplication of some
6772 declarations (they differed!).
6775 *) 'openssl engine' can now list capabilities.
6778 *) Better error reporting in 'openssl engine'.
6781 *) Never call load_dh_param(NULL) in s_server.
6784 *) Add engine application. It can currently list engines by name and
6785 identity, and test if they are actually available.
6788 *) Improve RPM specification file by forcing symbolic linking and making
6789 sure the installed documentation is also owned by root.root.
6790 [Damien Miller <djm@mindrot.org>]
6792 *) Give the OpenSSL applications more possibilities to make use of
6793 keys (public as well as private) handled by engines.
6796 *) Add OCSP code that comes from CertCo.
6799 *) Add VMS support for the Rijndael code.
6802 *) Added untested support for Nuron crypto accelerator.
6805 *) Add support for external cryptographic devices. This code was
6806 previously distributed separately as the "engine" branch.
6807 [Geoff Thorpe, Richard Levitte]
6809 *) Rework the filename-translation in the DSO code. It is now possible to
6810 have far greater control over how a "name" is turned into a filename
6811 depending on the operating environment and any oddities about the
6812 different shared library filenames on each system.
6815 *) Support threads on FreeBSD-elf in Configure.
6818 *) Fix for SHA1 assembly problem with MASM: it produces
6819 warnings about corrupt line number information when assembling
6820 with debugging information. This is caused by the overlapping
6822 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
6825 NCONF_get_number() has no error checking at all. As a replacement,
6826 NCONF_get_number_e() is defined (_e for "error checking") and is
6827 promoted strongly. The old NCONF_get_number is kept around for
6828 binary backward compatibility.
6829 Make it possible for methods to load from something other than a BIO,
6830 by providing a function pointer that is given a name instead of a BIO.
6831 For example, this could be used to load configuration data from an
6835 *) Fix for non blocking accept BIOs. Added new I/O special reason
6836 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
6837 with non blocking I/O was not possible because no retry code was
6838 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
6842 *) Added the beginnings of Rijndael support.
6845 *) Fix for bug in DirectoryString mask setting. Add support for
6846 X509_NAME_print_ex() in 'req' and X509_print_ex() function
6847 to allow certificate printing to more controllable, additional
6848 'certopt' option to 'x509' to allow new printing options to be
6852 *) Clean old EAY MD5 hack from e_os.h.
6855 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
6857 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
6858 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
6859 [Joe Orton, Steve Henson]
6861 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
6863 *) Fix additional bug revealed by the NISCC test suite:
6865 Stop bug triggering large recursion when presented with
6866 certain ASN.1 tags (CVE-2003-0851)
6869 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
6871 *) Fix various bugs revealed by running the NISCC test suite:
6873 Stop out of bounds reads in the ASN1 code when presented with
6874 invalid tags (CVE-2003-0543 and CVE-2003-0544).
6876 If verify callback ignores invalid public key errors don't try to check
6877 certificate signature with the NULL public key.
6881 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
6882 if the server requested one: as stated in TLS 1.0 and SSL 3.0
6886 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
6887 extra data after the compression methods not only for TLS 1.0
6888 but also for SSL 3.0 (as required by the specification).
6889 [Bodo Moeller; problem pointed out by Matthias Loepfe]
6891 *) Change X509_certificate_type() to mark the key as exported/exportable
6892 when it's 512 *bits* long, not 512 bytes.
6895 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
6897 *) Countermeasure against the Klima-Pokorny-Rosa extension of
6898 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
6899 a protocol version number mismatch like a decryption error
6900 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
6903 *) Turn on RSA blinding by default in the default implementation
6904 to avoid a timing attack. Applications that don't want it can call
6905 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
6906 They would be ill-advised to do so in most cases.
6907 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
6909 *) Change RSA blinding code so that it works when the PRNG is not
6910 seeded (in this case, the secret RSA exponent is abused as
6911 an unpredictable seed -- if it is not unpredictable, there
6912 is no point in blinding anyway). Make RSA blinding thread-safe
6913 by remembering the creator's thread ID in rsa->blinding and
6914 having all other threads use local one-time blinding factors
6915 (this requires more computation than sharing rsa->blinding, but
6916 avoids excessive locking; and if an RSA object is not shared
6917 between threads, blinding will still be very fast).
6920 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
6922 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
6923 via timing by performing a MAC computation even if incorrrect
6924 block cipher padding has been found. This is a countermeasure
6925 against active attacks where the attacker has to distinguish
6926 between bad padding and a MAC verification error. (CVE-2003-0078)
6928 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
6929 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
6930 Martin Vuagnoux (EPFL, Ilion)]
6932 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
6934 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
6935 memory from it's contents. This is done with a counter that will
6936 place alternating values in each byte. This can be used to solve
6937 two issues: 1) the removal of calls to memset() by highly optimizing
6938 compilers, and 2) cleansing with other values than 0, since those can
6939 be read through on certain media, for example a swap space on disk.
6942 *) Bugfix: client side session caching did not work with external caching,
6943 because the session->cipher setting was not restored when reloading
6944 from the external cache. This problem was masked, when
6945 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
6946 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
6949 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
6950 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
6951 [Zeev Lieber <zeev-l@yahoo.com>]
6953 *) Undo an undocumented change introduced in 0.9.6e which caused
6954 repeated calls to OpenSSL_add_all_ciphers() and
6955 OpenSSL_add_all_digests() to be ignored, even after calling
6959 *) Change the default configuration reader to deal with last line not
6960 being properly terminated.
6963 *) Change X509_NAME_cmp() so it applies the special rules on handling
6964 DN values that are of type PrintableString, as well as RDNs of type
6965 emailAddress where the value has the type ia5String.
6966 [stefank@valicert.com via Richard Levitte]
6968 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
6969 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
6970 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
6971 the bitwise-OR of the two for use by the majority of applications
6972 wanting this behaviour, and update the docs. The documented
6973 behaviour and actual behaviour were inconsistent and had been
6974 changing anyway, so this is more a bug-fix than a behavioural
6976 [Geoff Thorpe, diagnosed by Nadav Har'El]
6978 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
6979 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
6982 *) Fix initialization code race conditions in
6983 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
6984 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
6985 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
6986 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
6987 ssl2_get_cipher_by_char(),
6988 ssl3_get_cipher_by_char().
6989 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
6991 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
6992 the cached sessions are flushed, as the remove_cb() might use ex_data
6993 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
6994 (see [openssl.org #212]).
6995 [Geoff Thorpe, Lutz Jaenicke]
6997 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
6998 length, instead of the encoding length to d2i_ASN1_OBJECT.
7001 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
7003 *) [In 0.9.6g-engine release:]
7004 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
7005 [Lynn Gazis <lgazis@rainbow.com>]
7007 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
7009 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
7010 and get fix the header length calculation.
7011 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
7012 Alon Kantor <alonk@checkpoint.com> (and others),
7015 *) Use proper error handling instead of 'assertions' in buffer
7016 overflow checks added in 0.9.6e. This prevents DoS (the
7017 assertions could call abort()).
7018 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
7020 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
7022 *) Add various sanity checks to asn1_get_length() to reject
7023 the ASN1 length bytes if they exceed sizeof(long), will appear
7024 negative or the content length exceeds the length of the
7026 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
7028 *) Fix cipher selection routines: ciphers without encryption had no flags
7029 for the cipher strength set and where therefore not handled correctly
7030 by the selection routines (PR #130).
7033 *) Fix EVP_dsa_sha macro.
7037 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
7038 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
7039 that was added in OpenSSL 0.9.6d.
7041 As the countermeasure turned out to be incompatible with some
7042 broken SSL implementations, the new option is part of SSL_OP_ALL.
7043 SSL_OP_ALL is usually employed when compatibility with weird SSL
7044 implementations is desired (e.g. '-bugs' option to 's_client' and
7045 's_server'), so the new option is automatically set in many
7049 *) Changes in security patch:
7051 Changes marked "(CHATS)" were sponsored by the Defense Advanced
7052 Research Projects Agency (DARPA) and Air Force Research Laboratory,
7053 Air Force Materiel Command, USAF, under agreement number
7056 *) Add various sanity checks to asn1_get_length() to reject
7057 the ASN1 length bytes if they exceed sizeof(long), will appear
7058 negative or the content length exceeds the length of the
7059 supplied buffer. (CVE-2002-0659)
7060 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
7062 *) Assertions for various potential buffer overflows, not known to
7064 [Ben Laurie (CHATS)]
7066 *) Various temporary buffers to hold ASCII versions of integers were
7067 too small for 64 bit platforms. (CVE-2002-0655)
7068 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
7070 *) Remote buffer overflow in SSL3 protocol - an attacker could
7071 supply an oversized session ID to a client. (CVE-2002-0656)
7072 [Ben Laurie (CHATS)]
7074 *) Remote buffer overflow in SSL2 protocol - an attacker could
7075 supply an oversized client master key. (CVE-2002-0656)
7076 [Ben Laurie (CHATS)]
7078 Changes between 0.9.6c and 0.9.6d [9 May 2002]
7080 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
7081 encoded as NULL) with id-dsa-with-sha1.
7082 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
7084 *) Check various X509_...() return values in apps/req.c.
7085 [Nils Larsch <nla@trustcenter.de>]
7087 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
7088 an end-of-file condition would erronously be flagged, when the CRLF
7089 was just at the end of a processed block. The bug was discovered when
7090 processing data through a buffering memory BIO handing the data to a
7091 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
7092 <ptsekov@syntrex.com> and Nedelcho Stanev.
7095 *) Implement a countermeasure against a vulnerability recently found
7096 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
7097 before application data chunks to avoid the use of known IVs
7098 with data potentially chosen by the attacker.
7101 *) Fix length checks in ssl3_get_client_hello().
7104 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
7105 to prevent ssl3_read_internal() from incorrectly assuming that
7106 ssl3_read_bytes() found application data while handshake
7107 processing was enabled when in fact s->s3->in_read_app_data was
7108 merely automatically cleared during the initial handshake.
7109 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
7111 *) Fix object definitions for Private and Enterprise: they were not
7112 recognized in their shortname (=lowercase) representation. Extend
7113 obj_dat.pl to issue an error when using undefined keywords instead
7114 of silently ignoring the problem (Svenning Sorensen
7115 <sss@sss.dnsalias.net>).
7118 *) Fix DH_generate_parameters() so that it works for 'non-standard'
7119 generators, i.e. generators other than 2 and 5. (Previously, the
7120 code did not properly initialise the 'add' and 'rem' values to
7121 BN_generate_prime().)
7123 In the new general case, we do not insist that 'generator' is
7124 actually a primitive root: This requirement is rather pointless;
7125 a generator of the order-q subgroup is just as good, if not
7129 *) Map new X509 verification errors to alerts. Discovered and submitted by
7130 Tom Wu <tom@arcot.com>.
7133 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
7134 returning non-zero before the data has been completely received
7135 when using non-blocking I/O.
7136 [Bodo Moeller; problem pointed out by John Hughes]
7138 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
7139 [Ben Laurie, Lutz Jaenicke]
7141 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
7142 Yoram Zahavi <YoramZ@gilian.com>).
7145 *) Add information about CygWin 1.3 and on, and preserve proper
7146 configuration for the versions before that.
7147 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
7149 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
7150 check whether we deal with a copy of a session and do not delete from
7151 the cache in this case. Problem reported by "Izhar Shoshani Levi"
7152 <izhar@checkpoint.com>.
7155 *) Do not store session data into the internal session cache, if it
7156 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
7157 flag is set). Proposed by Aslam <aslam@funk.com>.
7160 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
7164 *) [In 0.9.6d-engine release:]
7165 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
7166 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
7168 *) Add the configuration target linux-s390x.
7169 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
7171 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
7172 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
7173 variable as an indication that a ClientHello message has been
7174 received. As the flag value will be lost between multiple
7175 invocations of ssl3_accept when using non-blocking I/O, the
7176 function may not be aware that a handshake has actually taken
7177 place, thus preventing a new session from being added to the
7180 To avoid this problem, we now set s->new_session to 2 instead of
7181 using a local variable.
7182 [Lutz Jaenicke, Bodo Moeller]
7184 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
7185 if the SSL_R_LENGTH_MISMATCH error is detected.
7186 [Geoff Thorpe, Bodo Moeller]
7188 *) New 'shared_ldflag' column in Configure platform table.
7191 *) Fix EVP_CIPHER_mode macro.
7192 ["Dan S. Camper" <dan@bti.net>]
7194 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
7195 type, we must throw them away by setting rr->length to 0.
7196 [D P Chang <dpc@qualys.com>]
7198 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
7200 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
7201 <Dominikus.Scherkl@biodata.com>. (The previous implementation
7202 worked incorrectly for those cases where range = 10..._2 and
7203 3*range is two bits longer than range.)
7206 *) Only add signing time to PKCS7 structures if it is not already
7210 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
7211 OBJ_ld_ce should be OBJ_id_ce.
7212 Also some ip-pda OIDs in crypto/objects/objects.txt were
7213 incorrect (cf. RFC 3039).
7214 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
7216 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
7217 returns early because it has nothing to do.
7218 [Andy Schneider <andy.schneider@bjss.co.uk>]
7220 *) [In 0.9.6c-engine release:]
7221 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
7222 [Andy Schneider <andy.schneider@bjss.co.uk>]
7224 *) [In 0.9.6c-engine release:]
7225 Add support for Cryptographic Appliance's keyserver technology.
7226 (Use engine 'keyclient')
7227 [Cryptographic Appliances and Geoff Thorpe]
7229 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
7230 is called via tools/c89.sh because arguments have to be
7231 rearranged (all '-L' options must appear before the first object
7233 [Richard Shapiro <rshapiro@abinitio.com>]
7235 *) [In 0.9.6c-engine release:]
7236 Add support for Broadcom crypto accelerator cards, backported
7238 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
7240 *) [In 0.9.6c-engine release:]
7241 Add support for SureWare crypto accelerator cards from
7242 Baltimore Technologies. (Use engine 'sureware')
7243 [Baltimore Technologies and Mark Cox]
7245 *) [In 0.9.6c-engine release:]
7246 Add support for crypto accelerator cards from Accelerated
7247 Encryption Processing, www.aep.ie. (Use engine 'aep')
7248 [AEP Inc. and Mark Cox]
7250 *) Add a configuration entry for gcc on UnixWare.
7251 [Gary Benson <gbenson@redhat.com>]
7253 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
7254 messages are stored in a single piece (fixed-length part and
7255 variable-length part combined) and fix various bugs found on the way.
7258 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
7259 instead. BIO_gethostbyname() does not know what timeouts are
7260 appropriate, so entries would stay in cache even when they have
7262 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
7264 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
7265 faced with a pathologically small ClientHello fragment that does
7266 not contain client_version: Instead of aborting with an error,
7267 simply choose the highest available protocol version (i.e.,
7268 TLS 1.0 unless it is disabled). In practice, ClientHello
7269 messages are never sent like this, but this change gives us
7270 strictly correct behaviour at least for TLS.
7273 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
7274 never resets s->method to s->ctx->method when called from within
7275 one of the SSL handshake functions.
7276 [Bodo Moeller; problem pointed out by Niko Baric]
7278 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
7279 (sent using the client's version number) if client_version is
7280 smaller than the protocol version in use. Also change
7281 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
7282 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
7283 the client will at least see that alert.
7286 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
7290 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
7291 client receives HelloRequest while in a handshake.
7292 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
7294 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
7295 should end in 'break', not 'goto end' which circumvents various
7296 cleanups done in state SSL_ST_OK. But session related stuff
7297 must be disabled for SSL_ST_OK in the case that we just sent a
7300 Also avoid some overhead by not calling ssl_init_wbio_buffer()
7301 before just sending a HelloRequest.
7302 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
7304 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
7305 reveal whether illegal block cipher padding was found or a MAC
7306 verification error occured. (Neither SSLerr() codes nor alerts
7307 are directly visible to potential attackers, but the information
7308 may leak via logfiles.)
7310 Similar changes are not required for the SSL 2.0 implementation
7311 because the number of padding bytes is sent in clear for SSL 2.0,
7312 and the extra bytes are just ignored. However ssl/s2_pkt.c
7313 failed to verify that the purported number of padding bytes is in
7317 *) Add OpenUNIX-8 support including shared libraries
7318 (Boyd Lynn Gerber <gerberb@zenez.com>).
7321 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
7322 'wristwatch attack' using huge encoding parameters (cf.
7323 James H. Manger's CRYPTO 2001 paper). Note that the
7324 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
7325 encoding parameters and hence was not vulnerable.
7328 *) BN_sqr() bug fix.
7329 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
7331 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
7332 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
7333 followed by modular reduction.
7334 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
7336 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
7337 equivalent based on BN_pseudo_rand() instead of BN_rand().
7340 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
7341 This function was broken, as the check for a new client hello message
7342 to handle SGC did not allow these large messages.
7343 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
7346 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
7349 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
7350 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
7353 *) Rework the configuration and shared library support for Tru64 Unix.
7354 The configuration part makes use of modern compiler features and
7355 still retains old compiler behavior for those that run older versions
7356 of the OS. The shared library support part includes a variant that
7357 uses the RPATH feature, and is available through the special
7358 configuration target "alpha-cc-rpath", which will never be selected
7360 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
7362 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
7363 with the same message size as in ssl3_get_certificate_request().
7364 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
7365 messages might inadvertently be reject as too long.
7366 [Petr Lampa <lampa@fee.vutbr.cz>]
7368 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
7371 *) Modified SSL library such that the verify_callback that has been set
7372 specificly for an SSL object with SSL_set_verify() is actually being
7373 used. Before the change, a verify_callback set with this function was
7374 ignored and the verify_callback() set in the SSL_CTX at the time of
7375 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
7376 to allow the necessary settings.
7379 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
7380 explicitly to NULL, as at least on Solaris 8 this seems not always to be
7381 done automatically (in contradiction to the requirements of the C
7382 standard). This made problems when used from OpenSSH.
7385 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
7386 dh->length and always used
7388 BN_rand_range(priv_key, dh->p).
7390 BN_rand_range() is not necessary for Diffie-Hellman, and this
7391 specific range makes Diffie-Hellman unnecessarily inefficient if
7392 dh->length (recommended exponent length) is much smaller than the
7393 length of dh->p. We could use BN_rand_range() if the order of
7394 the subgroup was stored in the DH structure, but we only have
7399 BN_rand(priv_key, l, ...)
7401 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
7407 RSA_eay_public_encrypt
7408 RSA_eay_private_decrypt
7409 RSA_eay_private_encrypt (signing)
7410 RSA_eay_public_decrypt (signature verification)
7412 (default implementations for RSA_public_encrypt,
7413 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
7414 always reject numbers >= n.
7417 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
7418 to synchronize access to 'locking_thread'. This is necessary on
7419 systems where access to 'locking_thread' (an 'unsigned long'
7420 variable) is not atomic.
7423 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
7424 *before* setting the 'crypto_lock_rand' flag. The previous code had
7425 a race condition if 0 is a valid thread ID.
7426 [Travis Vitek <vitek@roguewave.com>]
7428 *) Add support for shared libraries under Irix.
7429 [Albert Chin-A-Young <china@thewrittenword.com>]
7431 *) Add configuration option to build on Linux on both big-endian and
7433 [Ralf Baechle <ralf@uni-koblenz.de>]
7435 *) Add the possibility to create shared libraries on HP-UX.
7438 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
7440 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
7441 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
7442 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
7443 PRNG state recovery was possible based on the output of
7444 one PRNG request appropriately sized to gain knowledge on
7445 'md' followed by enough consecutive 1-byte PRNG requests
7446 to traverse all of 'state'.
7448 1. When updating 'md_local' (the current thread's copy of 'md')
7449 during PRNG output generation, hash all of the previous
7450 'md_local' value, not just the half used for PRNG output.
7452 2. Make the number of bytes from 'state' included into the hash
7453 independent from the number of PRNG bytes requested.
7455 The first measure alone would be sufficient to avoid
7456 Markku-Juhani's attack. (Actually it had never occurred
7457 to me that the half of 'md_local' used for chaining was the
7458 half from which PRNG output bytes were taken -- I had always
7459 assumed that the secret half would be used.) The second
7460 measure makes sure that additional data from 'state' is never
7461 mixed into 'md_local' in small portions; this heuristically
7462 further strengthens the PRNG.
7465 *) Fix crypto/bn/asm/mips3.s.
7468 *) When only the key is given to "enc", the IV is undefined. Print out
7469 an error message in this case.
7472 *) Handle special case when X509_NAME is empty in X509 printing routines.
7475 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
7476 positive and less than q.
7479 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
7480 used: it isn't thread safe and the add_lock_callback should handle
7482 [Paul Rose <Paul.Rose@bridge.com>]
7484 *) Verify that incoming data obeys the block size in
7485 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
7489 [Ulf Möller, Bodo Möller]
7491 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
7492 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
7493 when fixing the server behaviour for backwards-compatible 'client
7494 hello' messages. (Note that the attack is impractical against
7495 SSL 3.0 and TLS 1.0 anyway because length and version checking
7496 means that the probability of guessing a valid ciphertext is
7497 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
7500 Before 0.9.5, the countermeasure (hide the error by generating a
7501 random 'decryption result') did not work properly because
7502 ERR_clear_error() was missing, meaning that SSL_get_error() would
7503 detect the supposedly ignored error.
7505 Both problems are now fixed.
7508 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
7509 (previously it was 1024).
7512 *) Fix for compatibility mode trust settings: ignore trust settings
7513 unless some valid trust or reject settings are present.
7516 *) Fix for blowfish EVP: its a variable length cipher.
7519 *) Fix various bugs related to DSA S/MIME verification. Handle missing
7520 parameters in DSA public key structures and return an error in the
7521 DSA routines if parameters are absent.
7524 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
7525 in the current directory if neither $RANDFILE nor $HOME was set.
7526 RAND_file_name() in 0.9.6a returned NULL in this case. This has
7527 caused some confusion to Windows users who haven't defined $HOME.
7528 Thus RAND_file_name() is changed again: e_os.h can define a
7529 DEFAULT_HOME, which will be used if $HOME is not set.
7530 For Windows, we use "C:"; on other platforms, we still require
7531 environment variables.
7533 *) Move 'if (!initialized) RAND_poll()' into regions protected by
7534 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
7535 having multiple threads call RAND_poll() concurrently.
7538 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
7539 combination of a flag and a thread ID variable.
7540 Otherwise while one thread is in ssleay_rand_bytes (which sets the
7541 flag), *other* threads can enter ssleay_add_bytes without obeying
7542 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
7543 that they do not hold after the first thread unsets add_do_not_lock).
7546 *) Change bctest again: '-x' expressions are not available in all
7550 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
7552 *) Fix a couple of memory leaks in PKCS7_dataDecode()
7553 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
7555 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
7556 the default extension for executables, if any. Also, make the perl
7557 scripts that use symlink() to test if it really exists and use "cp"
7558 if it doesn't. All this made OpenSSL compilable and installable in
7562 *) Fix for asn1_GetSequence() for indefinite length constructed data.
7563 If SEQUENCE is length is indefinite just set c->slen to the total
7564 amount of data available.
7565 [Steve Henson, reported by shige@FreeBSD.org]
7566 [This change does not apply to 0.9.7.]
7568 *) Change bctest to avoid here-documents inside command substitution
7569 (workaround for FreeBSD /bin/sh bug).
7570 For compatibility with Ultrix, avoid shell functions (introduced
7571 in the bctest version that searches along $PATH).
7574 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
7575 with des_encrypt() defined on some operating systems, like Solaris
7579 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
7580 On the Importance of Eliminating Errors in Cryptographic
7581 Computations, J. Cryptology 14 (2001) 2, 101-119,
7582 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
7585 *) MIPS assembler BIGNUM division bug fix.
7588 *) Disabled incorrect Alpha assembler code.
7591 *) Fix PKCS#7 decode routines so they correctly update the length
7592 after reading an EOC for the EXPLICIT tag.
7594 [This change does not apply to 0.9.7.]
7596 *) Fix bug in PKCS#12 key generation routines. This was triggered
7597 if a 3DES key was generated with a 0 initial byte. Include
7598 PKCS12_BROKEN_KEYGEN compilation option to retain the old
7599 (but broken) behaviour.
7602 *) Enhance bctest to search for a working bc along $PATH and print
7604 [Tim Rice <tim@multitalents.net> via Richard Levitte]
7606 *) Fix memory leaks in err.c: free err_data string if necessary;
7607 don't write to the wrong index in ERR_set_error_data.
7610 *) Implement ssl23_peek (analogous to ssl23_read), which previously
7614 *) Replace rdtsc with _emit statements for VC++ version 5.
7615 [Jeremy Cooper <jeremy@baymoo.org>]
7617 *) Make it possible to reuse SSLv2 sessions.
7620 *) In copy_email() check for >= 0 as a return value for
7621 X509_NAME_get_index_by_NID() since 0 is a valid index.
7622 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
7624 *) Avoid coredump with unsupported or invalid public keys by checking if
7625 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
7626 PKCS7_verify() fails with non detached data.
7629 *) Don't use getenv in library functions when run as setuid/setgid.
7630 New function OPENSSL_issetugid().
7633 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
7634 due to incorrect handling of multi-threading:
7636 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
7638 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
7640 3. Count how many times MemCheck_off() has been called so that
7641 nested use can be treated correctly. This also avoids
7642 inband-signalling in the previous code (which relied on the
7643 assumption that thread ID 0 is impossible).
7646 *) Add "-rand" option also to s_client and s_server.
7649 *) Fix CPU detection on Irix 6.x.
7650 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
7651 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
7653 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
7656 [This change does not apply to 0.9.7.]
7658 *) Use the cached encoding of an X509_NAME structure rather than
7659 copying it. This is apparently the reason for the libsafe "errors"
7660 but the code is actually correct.
7663 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
7664 Bleichenbacher's DSA attack.
7665 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
7666 to be set and top=0 forces the highest bit to be set; top=-1 is new
7667 and leaves the highest bit random.
7668 [Ulf Moeller, Bodo Moeller]
7670 *) In the NCONF_...-based implementations for CONF_... queries
7671 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
7672 a temporary CONF structure with the data component set to NULL
7673 (which gives segmentation faults in lh_retrieve).
7674 Instead, use NULL for the CONF pointer in CONF_get_string and
7675 CONF_get_number (which may use environment variables) and directly
7676 return NULL from CONF_get_section.
7679 *) Fix potential buffer overrun for EBCDIC.
7682 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
7683 keyUsage if basicConstraints absent for a CA.
7686 *) Make SMIME_write_PKCS7() write mail header values with a format that
7687 is more generally accepted (no spaces before the semicolon), since
7688 some programs can't parse those values properly otherwise. Also make
7689 sure BIO's that break lines after each write do not create invalid
7693 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
7694 macros previously used would not encode an empty SEQUENCE OF
7695 and break the signature.
7697 [This change does not apply to 0.9.7.]
7699 *) Zero the premaster secret after deriving the master secret in
7703 *) Add some EVP_add_digest_alias registrations (as found in
7704 OpenSSL_add_all_digests()) to SSL_library_init()
7705 aka OpenSSL_add_ssl_algorithms(). This provides improved
7706 compatibility with peers using X.509 certificates
7707 with unconventional AlgorithmIdentifier OIDs.
7710 *) Fix for Irix with NO_ASM.
7711 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
7713 *) ./config script fixes.
7714 [Ulf Moeller, Richard Levitte]
7716 *) Fix 'openssl passwd -1'.
7719 *) Change PKCS12_key_gen_asc() so it can cope with non null
7720 terminated strings whose length is passed in the passlen
7721 parameter, for example from PEM callbacks. This was done
7722 by adding an extra length parameter to asc2uni().
7723 [Steve Henson, reported by <oddissey@samsung.co.kr>]
7725 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
7726 call failed, free the DSA structure.
7729 *) Fix to uni2asc() to cope with zero length Unicode strings.
7730 These are present in some PKCS#12 files.
7733 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
7734 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
7735 when writing a 32767 byte record.
7736 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
7738 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
7739 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
7741 (RSA objects have a reference count access to which is protected
7742 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
7743 so they are meant to be shared between threads.)
7744 [Bodo Moeller, Geoff Thorpe; original patch submitted by
7745 "Reddie, Steven" <Steven.Reddie@ca.com>]
7747 *) Fix a deadlock in CRYPTO_mem_leaks().
7750 *) Use better test patterns in bntest.
7753 *) rand_win.c fix for Borland C.
7756 *) BN_rshift bugfix for n == 0.
7759 *) Add a 'bctest' script that checks for some known 'bc' bugs
7760 so that 'make test' does not abort just because 'bc' is broken.
7763 *) Store verify_result within SSL_SESSION also for client side to
7764 avoid potential security hole. (Re-used sessions on the client side
7765 always resulted in verify_result==X509_V_OK, not using the original
7766 result of the server certificate verification.)
7769 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
7770 SSL3_RT_APPLICATION_DATA, return 0.
7771 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
7775 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
7776 releases, have been re-implemented by renaming the previous
7777 implementations of ssl2_read and ssl3_read to ssl2_read_internal
7778 and ssl3_read_internal, respectively, and adding 'peek' parameters
7779 to them. The new ssl[23]_{read,peek} functions are calls to
7780 ssl[23]_read_internal with the 'peek' flag set appropriately.
7781 A 'peek' parameter has also been added to ssl3_read_bytes, which
7782 does the actual work for ssl3_read_internal.
7785 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
7786 the method-specific "init()" handler. Also clean up ex_data after
7787 calling the method-specific "finish()" handler. Previously, this was
7788 happening the other way round.
7791 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
7792 The previous value, 12, was not always sufficient for BN_mod_exp().
7795 *) Make sure that shared libraries get the internal name engine with
7796 the full version number and not just 0. This should mark the
7797 shared libraries as not backward compatible. Of course, this should
7798 be changed again when we can guarantee backward binary compatibility.
7801 *) Fix typo in get_cert_by_subject() in by_dir.c
7802 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
7804 *) Rework the system to generate shared libraries:
7806 - Make note of the expected extension for the shared libraries and
7807 if there is a need for symbolic links from for example libcrypto.so.0
7808 to libcrypto.so.0.9.7. There is extended info in Configure for
7811 - Make as few rebuilds of the shared libraries as possible.
7813 - Still avoid linking the OpenSSL programs with the shared libraries.
7815 - When installing, install the shared libraries separately from the
7819 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
7821 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
7822 and not in SSL_clear because the latter is also used by the
7823 accept/connect functions; previously, the settings made by
7824 SSL_set_read_ahead would be lost during the handshake.
7825 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
7827 *) Correct util/mkdef.pl to be selective about disabled algorithms.
7828 Previously, it would create entries for disabled algorithms no
7832 *) Added several new manual pages for SSL_* function.
7835 Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
7837 *) In ssl23_get_client_hello, generate an error message when faced
7838 with an initial SSL 3.0/TLS record that is too small to contain the
7839 first two bytes of the ClientHello message, i.e. client_version.
7840 (Note that this is a pathologic case that probably has never happened
7841 in real life.) The previous approach was to use the version number
7842 from the record header as a substitute; but our protocol choice
7843 should not depend on that one because it is not authenticated
7844 by the Finished messages.
7847 *) More robust randomness gathering functions for Windows.
7848 [Jeffrey Altman <jaltman@columbia.edu>]
7850 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
7851 not set then we don't setup the error code for issuer check errors
7852 to avoid possibly overwriting other errors which the callback does
7853 handle. If an application does set the flag then we assume it knows
7854 what it is doing and can handle the new informational codes
7858 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
7859 a general "ANY" type, as such it should be able to decode anything
7860 including tagged types. However it didn't check the class so it would
7861 wrongly interpret tagged types in the same way as their universal
7862 counterpart and unknown types were just rejected. Changed so that the
7863 tagged and unknown types are handled in the same way as a SEQUENCE:
7864 that is the encoding is stored intact. There is also a new type
7865 "V_ASN1_OTHER" which is used when the class is not universal, in this
7866 case we have no idea what the actual type is so we just lump them all
7870 *) On VMS, stdout may very well lead to a file that is written to
7871 in a record-oriented fashion. That means that every write() will
7872 write a separate record, which will be read separately by the
7873 programs trying to read from it. This can be very confusing.
7875 The solution is to put a BIO filter in the way that will buffer
7876 text until a linefeed is reached, and then write everything a
7877 line at a time, so every record written will be an actual line,
7878 not chunks of lines and not (usually doesn't happen, but I've
7879 seen it once) several lines in one record. BIO_f_linebuffer() is
7882 Currently, it's a VMS-only method, because that's where it has
7883 been tested well enough.
7886 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
7887 it can return incorrect results.
7888 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
7889 but it was in 0.9.6-beta[12].)
7892 *) Disable the check for content being present when verifying detached
7893 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
7894 include zero length content when signing messages.
7897 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
7898 BIO_ctrl (for BIO pairs).
7901 *) Add DSO method for VMS.
7904 *) Bug fix: Montgomery multiplication could produce results with the
7908 *) Add RPM specification openssl.spec and modify it to build three
7909 packages. The default package contains applications, application
7910 documentation and run-time libraries. The devel package contains
7911 include files, static libraries and function documentation. The
7912 doc package contains the contents of the doc directory. The original
7913 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
7916 *) Add a large number of documentation files for many SSL routines.
7917 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
7919 *) Add a configuration entry for Sony News 4.
7920 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
7922 *) Don't set the two most significant bits to one when generating a
7923 random number < q in the DSA library.
7926 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
7927 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
7928 the underlying transport is blocking) if a handshake took place.
7929 (The default behaviour is needed by applications such as s_client
7930 and s_server that use select() to determine when to use SSL_read;
7931 but for applications that know in advance when to expect data, it
7932 just makes things more complicated.)
7935 *) Add RAND_egd_bytes(), which gives control over the number of bytes read
7939 *) Add a few more EBCDIC conditionals that make `req' and `x509'
7940 work better on such systems.
7941 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
7943 *) Add two demo programs for PKCS12_parse() and PKCS12_create().
7944 Update PKCS12_parse() so it copies the friendlyName and the
7945 keyid to the certificates aux info.
7948 *) Fix bug in PKCS7_verify() which caused an infinite loop
7949 if there was more than one signature.
7950 [Sven Uszpelkat <su@celocom.de>]
7952 *) Major change in util/mkdef.pl to include extra information
7953 about each symbol, as well as presenting variables as well
7954 as functions. This change means that there's n more need
7955 to rebuild the .num files when some algorithms are excluded.
7958 *) Allow the verify time to be set by an application,
7959 rather than always using the current time.
7962 *) Phase 2 verify code reorganisation. The certificate
7963 verify code now looks up an issuer certificate by a
7964 number of criteria: subject name, authority key id
7965 and key usage. It also verifies self signed certificates
7966 by the same criteria. The main comparison function is
7967 X509_check_issued() which performs these checks.
7969 Lot of changes were necessary in order to support this
7970 without completely rewriting the lookup code.
7972 Authority and subject key identifier are now cached.
7974 The LHASH 'certs' is X509_STORE has now been replaced
7975 by a STACK_OF(X509_OBJECT). This is mainly because an
7976 LHASH can't store or retrieve multiple objects with
7977 the same hash value.
7979 As a result various functions (which were all internal
7980 use only) have changed to handle the new X509_STORE
7981 structure. This will break anything that messed round
7982 with X509_STORE internally.
7984 The functions X509_STORE_add_cert() now checks for an
7985 exact match, rather than just subject name.
7987 The X509_STORE API doesn't directly support the retrieval
7988 of multiple certificates matching a given criteria, however
7989 this can be worked round by performing a lookup first
7990 (which will fill the cache with candidate certificates)
7991 and then examining the cache for matches. This is probably
7992 the best we can do without throwing out X509_LOOKUP
7993 entirely (maybe later...).
7995 The X509_VERIFY_CTX structure has been enhanced considerably.
7997 All certificate lookup operations now go via a get_issuer()
7998 callback. Although this currently uses an X509_STORE it
7999 can be replaced by custom lookups. This is a simple way
8000 to bypass the X509_STORE hackery necessary to make this
8001 work and makes it possible to use more efficient techniques
8002 in future. A very simple version which uses a simple
8003 STACK for its trusted certificate store is also provided
8004 using X509_STORE_CTX_trusted_stack().
8006 The verify_cb() and verify() callbacks now have equivalents
8007 in the X509_STORE_CTX structure.
8009 X509_STORE_CTX also has a 'flags' field which can be used
8010 to customise the verify behaviour.
8013 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
8014 excludes S/MIME capabilities.
8017 *) When a certificate request is read in keep a copy of the
8018 original encoding of the signed data and use it when outputing
8019 again. Signatures then use the original encoding rather than
8020 a decoded, encoded version which may cause problems if the
8021 request is improperly encoded.
8024 *) For consistency with other BIO_puts implementations, call
8025 buffer_write(b, ...) directly in buffer_puts instead of calling
8028 In BIO_puts, increment b->num_write as in BIO_write.
8029 [Peter.Sylvester@EdelWeb.fr]
8031 *) Fix BN_mul_word for the case where the word is 0. (We have to use
8032 BN_zero, we may not return a BIGNUM with an array consisting of
8036 *) Avoid calling abort() from within the library when problems are
8037 detected, except if preprocessor symbols have been defined
8038 (such as REF_CHECK, BN_DEBUG etc.).
8041 *) New openssl application 'rsautl'. This utility can be
8042 used for low level RSA operations. DER public key
8043 BIO/fp routines also added.
8046 *) New Configure entry and patches for compiling on QNX 4.
8047 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
8049 *) A demo state-machine implementation was sponsored by
8050 Nuron (http://www.nuron.com/) and is now available in
8051 demos/state_machine.
8054 *) New options added to the 'dgst' utility for signature
8055 generation and verification.
8058 *) Unrecognized PKCS#7 content types are now handled via a
8059 catch all ASN1_TYPE structure. This allows unsupported
8060 types to be stored as a "blob" and an application can
8061 encode and decode it manually.
8064 *) Fix various signed/unsigned issues to make a_strex.c
8066 [Oscar Jacobsson <oscar.jacobsson@celocom.com>]
8068 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
8069 length if passed a buffer. ASN1_INTEGER_to_BN failed
8070 if passed a NULL BN and its argument was negative.
8071 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
8073 *) Modification to PKCS#7 encoding routines to output definite
8074 length encoding. Since currently the whole structures are in
8075 memory there's not real point in using indefinite length
8076 constructed encoding. However if OpenSSL is compiled with
8077 the flag PKCS7_INDEFINITE_ENCODING the old form is used.
8080 *) Added BIO_vprintf() and BIO_vsnprintf().
8083 *) Added more prefixes to parse for in the the strings written
8084 through a logging bio, to cover all the levels that are available
8085 through syslog. The prefixes are now:
8087 PANIC, EMERG, EMR => LOG_EMERG
8088 ALERT, ALR => LOG_ALERT
8089 CRIT, CRI => LOG_CRIT
8090 ERROR, ERR => LOG_ERR
8091 WARNING, WARN, WAR => LOG_WARNING
8092 NOTICE, NOTE, NOT => LOG_NOTICE
8093 INFO, INF => LOG_INFO
8094 DEBUG, DBG => LOG_DEBUG
8096 and as before, if none of those prefixes are present at the
8097 beginning of the string, LOG_ERR is chosen.
8099 On Win32, the LOG_* levels are mapped according to this:
8101 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
8102 LOG_WARNING => EVENTLOG_WARNING_TYPE
8103 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
8107 *) Made it possible to reconfigure with just the configuration
8108 argument "reconf" or "reconfigure". The command line arguments
8109 are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
8110 and are retrieved from there when reconfiguring.
8114 [Assar Westerlund <assar@sics.se>, Richard Levitte]
8116 *) Add the arguments -CAfile and -CApath to the pkcs12 utility.
8119 *) The obj_dat.pl script was messing up the sorting of object
8120 names. The reason was that it compared the quoted version
8121 of strings as a result "OCSP" > "OCSP Signing" because
8122 " > SPACE. Changed script to store unquoted versions of
8123 names and add quotes on output. It was also omitting some
8124 names from the lookup table if they were given a default
8125 value (that is if SN is missing it is given the same
8126 value as LN and vice versa), these are now added on the
8127 grounds that if an object has a name we should be able to
8128 look it up. Finally added warning output when duplicate
8129 short or long names are found.
8132 *) Changes needed for Tandem NSK.
8133 [Scott Uroff <scott@xypro.com>]
8135 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
8136 RSA_padding_check_SSLv23(), special padding was never detected
8137 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
8138 version rollback attacks was not effective.
8140 In s23_clnt.c, don't use special rollback-attack detection padding
8141 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
8142 client; similarly, in s23_srvr.c, don't do the rollback check if
8143 SSL 2.0 is the only protocol enabled in the server.
8146 *) Make it possible to get hexdumps of unprintable data with 'openssl
8147 asn1parse'. By implication, the functions ASN1_parse_dump() and
8148 BIO_dump_indent() are added.
8151 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
8152 these print out strings and name structures based on various
8153 flags including RFC2253 support and proper handling of
8154 multibyte characters. Added options to the 'x509' utility
8155 to allow the various flags to be set.
8158 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
8159 Also change the functions X509_cmp_current_time() and
8160 X509_gmtime_adj() work with an ASN1_TIME structure,
8161 this will enable certificates using GeneralizedTime in validity
8162 dates to be checked.
8165 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid
8166 negative public key encodings) on by default,
8167 NO_NEG_PUBKEY_BUG can be set to disable it.
8170 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
8171 content octets. An i2c_ASN1_OBJECT is unnecessary because
8172 the encoding can be trivially obtained from the structure.
8175 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
8176 not read locks (CRYPTO_r_[un]lock).
8179 *) A first attempt at creating official support for shared
8180 libraries through configuration. I've kept it so the
8181 default is static libraries only, and the OpenSSL programs
8182 are always statically linked for now, but there are
8183 preparations for dynamic linking in place.
8184 This has been tested on Linux and Tru64.
8187 *) Randomness polling function for Win9x, as described in:
8188 Peter Gutmann, Software Generation of Practically Strong
8192 *) Fix so PRNG is seeded in req if using an already existing
8196 *) New options to smime application. -inform and -outform
8197 allow alternative formats for the S/MIME message including
8198 PEM and DER. The -content option allows the content to be
8199 specified separately. This should allow things like Netscape
8200 form signing output easier to verify.
8203 *) Fix the ASN1 encoding of tags using the 'long form'.
8206 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
8207 STRING types. These convert content octets to and from the
8208 underlying type. The actual tag and length octets are
8209 already assumed to have been read in and checked. These
8210 are needed because all other string types have virtually
8211 identical handling apart from the tag. By having versions
8212 of the ASN1 functions that just operate on content octets
8213 IMPLICIT tagging can be handled properly. It also allows
8214 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
8215 and ASN1_INTEGER are identical apart from the tag.
8218 *) Change the handling of OID objects as follows:
8220 - New object identifiers are inserted in objects.txt, following
8221 the syntax given in objects.README.
8222 - objects.pl is used to process obj_mac.num and create a new
8224 - obj_dat.pl is used to create a new obj_dat.h, using the data in
8227 This is currently kind of a hack, and the perl code in objects.pl
8228 isn't very elegant, but it works as I intended. The simplest way
8229 to check that it worked correctly is to look in obj_dat.h and
8230 check the array nid_objs and make sure the objects haven't moved
8231 around (this is important!). Additions are OK, as well as
8232 consistent name changes.
8235 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
8238 *) Addition of the command line parameter '-rand file' to 'openssl req'.
8239 The given file adds to whatever has already been seeded into the
8240 random pool through the RANDFILE configuration file option or
8241 environment variable, or the default random state file.
8244 *) mkstack.pl now sorts each macro group into lexical order.
8245 Previously the output order depended on the order the files
8246 appeared in the directory, resulting in needless rewriting
8250 *) Patches to make OpenSSL compile under Win32 again. Mostly
8251 work arounds for the VC++ problem that it treats func() as
8252 func(void). Also stripped out the parts of mkdef.pl that
8253 added extra typesafe functions: these no longer exist.
8256 *) Reorganisation of the stack code. The macros are now all
8257 collected in safestack.h . Each macro is defined in terms of
8258 a "stack macro" of the form SKM_<name>(type, a, b). The
8259 DEBUG_SAFESTACK is now handled in terms of function casts,
8260 this has the advantage of retaining type safety without the
8261 use of additional functions. If DEBUG_SAFESTACK is not defined
8262 then the non typesafe macros are used instead. Also modified the
8263 mkstack.pl script to handle the new form. Needs testing to see
8264 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
8265 the default if no major problems. Similar behaviour for ASN1_SET_OF
8266 and PKCS12_STACK_OF.
8269 *) When some versions of IIS use the 'NET' form of private key the
8270 key derivation algorithm is different. Normally MD5(password) is
8271 used as a 128 bit RC4 key. In the modified case
8272 MD5(MD5(password) + "SGCKEYSALT") is used instead. Added some
8273 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
8274 as the old Netscape_RSA functions except they have an additional
8275 'sgckey' parameter which uses the modified algorithm. Also added
8276 an -sgckey command line option to the rsa utility. Thanks to
8277 Adrian Peck <bertie@ncipher.com> for posting details of the modified
8278 algorithm to openssl-dev.
8281 *) The evp_local.h macros were using 'c.##kname' which resulted in
8282 invalid expansion on some systems (SCO 5.0.5 for example).
8283 Corrected to 'c.kname'.
8284 [Phillip Porch <root@theporch.com>]
8286 *) New X509_get1_email() and X509_REQ_get1_email() functions that return
8287 a STACK of email addresses from a certificate or request, these look
8288 in the subject name and the subject alternative name extensions and
8289 omit any duplicate addresses.
8292 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows.
8293 This makes DSA verification about 2 % faster.
8296 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
8297 (meaning that now 2^5 values will be precomputed, which is only 4 KB
8298 plus overhead for 1024 bit moduli).
8299 This makes exponentiations about 0.5 % faster for 1024 bit
8300 exponents (as measured by "openssl speed rsa2048").
8303 *) Rename memory handling macros to avoid conflicts with other
8305 Malloc => OPENSSL_malloc
8306 Malloc_locked => OPENSSL_malloc_locked
8307 Realloc => OPENSSL_realloc
8308 Free => OPENSSL_free
8311 *) New function BN_mod_exp_mont_word for small bases (roughly 15%
8312 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
8315 *) CygWin32 support.
8316 [John Jarvie <jjarvie@newsguy.com>]
8318 *) The type-safe stack code has been rejigged. It is now only compiled
8319 in when OpenSSL is configured with the DEBUG_SAFESTACK option and
8320 by default all type-specific stack functions are "#define"d back to
8321 standard stack functions. This results in more streamlined output
8322 but retains the type-safety checking possibilities of the original
8326 *) The STACK code has been cleaned up, and certain type declarations
8327 that didn't make a lot of sense have been brought in line. This has
8328 also involved a cleanup of sorts in safestack.h to more correctly
8329 map type-safe stack functions onto their plain stack counterparts.
8330 This work has also resulted in a variety of "const"ifications of
8331 lots of the code, especially "_cmp" operations which should normally
8332 be prototyped with "const" parameters anyway.
8335 *) When generating bytes for the first time in md_rand.c, 'stir the pool'
8336 by seeding with STATE_SIZE dummy bytes (with zero entropy count).
8337 (The PRNG state consists of two parts, the large pool 'state' and 'md',
8338 where all of 'md' is used each time the PRNG is used, but 'state'
8339 is used only indexed by a cyclic counter. As entropy may not be
8340 well distributed from the beginning, 'md' is important as a
8341 chaining variable. However, the output function chains only half
8342 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
8343 all of 'md', and seeding with STATE_SIZE dummy bytes will result
8344 in all of 'state' being rewritten, with the new values depending
8345 on virtually all of 'md'. This overcomes the 80 bit limitation.)
8348 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
8349 the handshake is continued after ssl_verify_cert_chain();
8350 otherwise, if SSL_VERIFY_NONE is set, remaining error codes
8351 can lead to 'unexplainable' connection aborts later.
8352 [Bodo Moeller; problem tracked down by Lutz Jaenicke]
8354 *) Major EVP API cipher revision.
8355 Add hooks for extra EVP features. This allows various cipher
8356 parameters to be set in the EVP interface. Support added for variable
8357 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
8358 setting of RC2 and RC5 parameters.
8360 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
8363 Remove lots of duplicated code from the EVP library. For example *every*
8364 cipher init() function handles the 'iv' in the same way according to the
8365 cipher mode. They also all do nothing if the 'key' parameter is NULL and
8366 for CFB and OFB modes they zero ctx->num.
8368 New functionality allows removal of S/MIME code RC2 hack.
8370 Most of the routines have the same form and so can be declared in terms
8373 By shifting this to the top level EVP_CipherInit() it can be removed from
8374 all individual ciphers. If the cipher wants to handle IVs or keys
8375 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
8378 Change lots of functions like EVP_EncryptUpdate() to now return a
8379 value: although software versions of the algorithms cannot fail
8380 any installed hardware versions can.
8383 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
8384 this option is set, tolerate broken clients that send the negotiated
8385 protocol version number instead of the requested protocol version
8389 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag;
8390 i.e. non-zero for export ciphersuites, zero otherwise.
8391 Previous versions had this flag inverted, inconsistent with
8392 rsa_tmp_cb (..._TMP_RSA_CB).
8393 [Bodo Moeller; problem reported by Amit Chopra]
8395 *) Add missing DSA library text string. Work around for some IIS
8396 key files with invalid SEQUENCE encoding.
8399 *) Add a document (doc/standards.txt) that list all kinds of standards
8400 and so on that are implemented in OpenSSL.
8403 *) Enhance c_rehash script. Old version would mishandle certificates
8404 with the same subject name hash and wouldn't handle CRLs at all.
8405 Added -fingerprint option to crl utility, to support new c_rehash
8409 *) Eliminate non-ANSI declarations in crypto.h and stack.h.
8412 *) Fix for SSL server purpose checking. Server checking was
8413 rejecting certificates which had extended key usage present
8414 but no ssl client purpose.
8415 [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>]
8417 *) Make PKCS#12 code work with no password. The PKCS#12 spec
8418 is a little unclear about how a blank password is handled.
8419 Since the password in encoded as a BMPString with terminating
8420 double NULL a zero length password would end up as just the
8421 double NULL. However no password at all is different and is
8422 handled differently in the PKCS#12 key generation code. NS
8423 treats a blank password as zero length. MSIE treats it as no
8424 password on export: but it will try both on import. We now do
8425 the same: PKCS12_parse() tries zero length and no password if
8426 the password is set to "" or NULL (NULL is now a valid password:
8427 it wasn't before) as does the pkcs12 application.
8430 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
8431 perror when PEM_read_bio_X509_REQ fails, the error message must
8432 be obtained from the error queue.
8435 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
8436 it in ERR_remove_state if appropriate, and change ERR_get_state
8437 accordingly to avoid race conditions (this is necessary because
8438 thread_hash is no longer constant once set).
8441 *) Bugfix for linux-elf makefile.one.
8444 *) RSA_get_default_method() will now cause a default
8445 RSA_METHOD to be chosen if one doesn't exist already.
8446 Previously this was only set during a call to RSA_new()
8447 or RSA_new_method(NULL) meaning it was possible for
8448 RSA_get_default_method() to return NULL.
8451 *) Added native name translation to the existing DSO code
8452 that will convert (if the flag to do so is set) filenames
8453 that are sufficiently small and have no path information
8454 into a canonical native form. Eg. "blah" converted to
8455 "libblah.so" or "blah.dll" etc.
8458 *) New function ERR_error_string_n(e, buf, len) which is like
8459 ERR_error_string(e, buf), but writes at most 'len' bytes
8460 including the 0 terminator. For ERR_error_string_n, 'buf'
8462 [Damien Miller <djm@mindrot.org>, Bodo Moeller]
8464 *) CONF library reworked to become more general. A new CONF
8465 configuration file reader "class" is implemented as well as a
8466 new functions (NCONF_*, for "New CONF") to handle it. The now
8467 old CONF_* functions are still there, but are reimplemented to
8468 work in terms of the new functions. Also, a set of functions
8469 to handle the internal storage of the configuration data is
8470 provided to make it easier to write new configuration file
8471 reader "classes" (I can definitely see something reading a
8472 configuration file in XML format, for example), called _CONF_*,
8473 or "the configuration storage API"...
8475 The new configuration file reading functions are:
8477 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
8478 NCONF_get_section, NCONF_get_string, NCONF_get_numbre
8480 NCONF_default, NCONF_WIN32
8482 NCONF_dump_fp, NCONF_dump_bio
8484 NCONF_default and NCONF_WIN32 are method (or "class") choosers,
8485 NCONF_new creates a new CONF object. This works in the same way
8486 as other interfaces in OpenSSL, like the BIO interface.
8487 NCONF_dump_* dump the internal storage of the configuration file,
8488 which is useful for debugging. All other functions take the same
8489 arguments as the old CONF_* functions wth the exception of the
8490 first that must be a `CONF *' instead of a `LHASH *'.
8492 To make it easer to use the new classes with the old CONF_* functions,
8493 the function CONF_set_default_method is provided.
8496 *) Add '-tls1' option to 'openssl ciphers', which was already
8497 mentioned in the documentation but had not been implemented.
8498 (This option is not yet really useful because even the additional
8499 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
8502 *) Initial DSO code added into libcrypto for letting OpenSSL (and
8503 OpenSSL-based applications) load shared libraries and bind to
8504 them in a portable way.
8505 [Geoff Thorpe, with contributions from Richard Levitte]
8507 Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
8509 *) Make sure _lrotl and _lrotr are only used with MSVC.
8511 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
8512 (the default implementation of RAND_status).
8514 *) Rename openssl x509 option '-crlext', which was added in 0.9.5,
8515 to '-clrext' (= clear extensions), as intended and documented.
8516 [Bodo Moeller; inconsistency pointed out by Michael Attili
8519 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length
8520 was larger than the MD block size.
8521 [Steve Henson, pointed out by Yost William <YostW@tce.com>]
8523 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
8524 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
8525 using the passed key: if the passed key was a private key the result
8526 of X509_print(), for example, would be to print out all the private key
8530 *) des_quad_cksum() byte order bug fix.
8531 [Ulf Möller, using the problem description in krb4-0.9.7, where
8532 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>]
8534 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
8536 [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>]
8538 *) For easily testing in shell scripts whether some command
8539 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
8540 returns with exit code 0 iff no command of the given name is available.
8541 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
8542 the output goes to stdout and nothing is printed to stderr.
8543 Additional arguments are always ignored.
8545 Since for each cipher there is a command of the same name,
8546 the 'no-cipher' compilation switches can be tested this way.
8548 ('openssl no-XXX' is not able to detect pseudo-commands such
8549 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
8552 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
8555 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
8556 is set; it will be thrown away anyway because each handshake creates
8558 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
8559 to parameters -- in previous versions (since OpenSSL 0.9.3) the
8560 'default key' from SSL_CTX_set_tmp_dh would always be lost, meaning
8561 you effectivly got SSL_OP_SINGLE_DH_USE when using this macro.
8564 *) New s_client option -ign_eof: EOF at stdin is ignored, and
8565 'Q' and 'R' lose their special meanings (quit/renegotiate).
8566 This is part of what -quiet does; unlike -quiet, -ign_eof
8567 does not suppress any output.
8570 *) Add compatibility options to the purpose and trust code. The
8571 purpose X509_PURPOSE_ANY is "any purpose" which automatically
8572 accepts a certificate or CA, this was the previous behaviour,
8573 with all the associated security issues.
8575 X509_TRUST_COMPAT is the old trust behaviour: only and
8576 automatically trust self signed roots in certificate store. A
8577 new trust setting X509_TRUST_DEFAULT is used to specify that
8578 a purpose has no associated trust setting and it should instead
8579 use the value in the default purpose.
8582 *) Fix the PKCS#8 DSA private key code so it decodes keys again
8583 and fix a memory leak.
8586 *) In util/mkerr.pl (which implements 'make errors'), preserve
8587 reason strings from the previous version of the .c file, as
8588 the default to have only downcase letters (and digits) in
8589 automatically generated reasons codes is not always appropriate.
8592 *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
8593 using strerror. Previously, ERR_reason_error_string() returned
8594 library names as reason strings for SYSerr; but SYSerr is a special
8595 case where small numbers are errno values, not library numbers.
8598 *) Add '-dsaparam' option to 'openssl dhparam' application. This
8599 converts DSA parameters into DH parameters. (When creating parameters,
8600 DSA_generate_parameters is used.)
8603 *) Include 'length' (recommended exponent length) in C code generated
8604 by 'openssl dhparam -C'.
8607 *) The second argument to set_label in perlasm was already being used
8608 so couldn't be used as a "file scope" flag. Moved to third argument
8612 *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
8613 instead of RAND_bytes for encryption IVs and salts.
8616 *) Include RAND_status() into RAND_METHOD instead of implementing
8617 it only for md_rand.c Otherwise replacing the PRNG by calling
8618 RAND_set_rand_method would be impossible.
8621 *) Don't let DSA_generate_key() enter an infinite loop if the random
8622 number generation fails.
8625 *) New 'rand' application for creating pseudo-random output.
8628 *) Added configuration support for Linux/IA64
8629 [Rolf Haberrecker <rolf@suse.de>]
8631 *) Assembler module support for Mingw32.
8634 *) Shared library support for HPUX (in shlib/).
8635 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous]
8637 *) Shared library support for Solaris gcc.
8638 [Lutz Behnke <behnke@trustcenter.de>]
8640 Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
8642 *) PKCS7_encrypt() was adding text MIME headers twice because they
8643 were added manually and by SMIME_crlf_copy().
8646 *) In bntest.c don't call BN_rand with zero bits argument.
8647 [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>]
8649 *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
8650 case was implemented. This caused BN_div_recp() to fail occasionally.
8653 *) Add an optional second argument to the set_label() in the perl
8654 assembly language builder. If this argument exists and is set
8655 to 1 it signals that the assembler should use a symbol whose
8656 scope is the entire file, not just the current function. This
8657 is needed with MASM which uses the format label:: for this scope.
8658 [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>]
8660 *) Change the ASN1 types so they are typedefs by default. Before
8661 almost all types were #define'd to ASN1_STRING which was causing
8662 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
8666 *) Change names of new functions to the new get1/get0 naming
8667 convention: After 'get1', the caller owns a reference count
8668 and has to call ..._free; 'get0' returns a pointer to some
8669 data structure without incrementing reference counters.
8670 (Some of the existing 'get' functions increment a reference
8671 counter, some don't.)
8672 Similarly, 'set1' and 'add1' functions increase reference
8673 counters or duplicate objects.
8676 *) Allow for the possibility of temp RSA key generation failure:
8677 the code used to assume it always worked and crashed on failure.
8680 *) Fix potential buffer overrun problem in BIO_printf().
8681 [Ulf Möller, using public domain code by Patrick Powell; problem
8682 pointed out by David Sacerdote <das33@cornell.edu>]
8684 *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions
8685 RAND_egd() and RAND_status(). In the command line application,
8686 the EGD socket can be specified like a seed file using RANDFILE
8690 *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
8691 Some CAs (e.g. Verisign) distribute certificates in this form.
8694 *) Remove the SSL_ALLOW_ADH compile option and set the default cipher
8695 list to exclude them. This means that no special compilation option
8696 is needed to use anonymous DH: it just needs to be included in the
8700 *) Change the EVP_MD_CTX_type macro so its meaning consistent with
8701 EVP_MD_type. The old functionality is available in a new macro called
8702 EVP_MD_md(). Change code that uses it and update docs.
8705 *) ..._ctrl functions now have corresponding ..._callback_ctrl functions
8706 where the 'void *' argument is replaced by a function pointer argument.
8707 Previously 'void *' was abused to point to functions, which works on
8708 many platforms, but is not correct. As these functions are usually
8709 called by macros defined in OpenSSL header files, most source code
8710 should work without changes.
8713 *) <openssl/opensslconf.h> (which is created by Configure) now contains
8714 sections with information on -D... compiler switches used for
8715 compiling the library so that applications can see them. To enable
8716 one of these sections, a pre-processor symbol OPENSSL_..._DEFINES
8717 must be defined. E.g.,
8718 #define OPENSSL_ALGORITHM_DEFINES
8719 #include <openssl/opensslconf.h>
8720 defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc.
8721 [Richard Levitte, Ulf and Bodo Möller]
8723 *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
8727 *) Change the 'other' type in certificate aux info to a STACK_OF
8728 X509_ALGOR. Although not an AlgorithmIdentifier as such it has
8729 the required ASN1 format: arbitrary types determined by an OID.
8732 *) Add some PEM_write_X509_REQ_NEW() functions and a command line
8733 argument to 'req'. This is not because the function is newer or
8734 better than others it just uses the work 'NEW' in the certificate
8735 request header lines. Some software needs this.
8738 *) Reorganise password command line arguments: now passwords can be
8739 obtained from various sources. Delete the PEM_cb function and make
8740 it the default behaviour: i.e. if the callback is NULL and the
8741 usrdata argument is not NULL interpret it as a null terminated pass
8742 phrase. If usrdata and the callback are NULL then the pass phrase
8743 is prompted for as usual.
8746 *) Add support for the Compaq Atalla crypto accelerator. If it is installed,
8747 the support is automatically enabled. The resulting binaries will
8748 autodetect the card and use it if present.
8749 [Ben Laurie and Compaq Inc.]
8751 *) Work around for Netscape hang bug. This sends certificate request
8752 and server done in one record. Since this is perfectly legal in the
8753 SSL/TLS protocol it isn't a "bug" option and is on by default. See
8754 the bugs/SSLv3 entry for more info.
8757 *) HP-UX tune-up: new unified configs, HP C compiler bug workaround.
8760 *) Add -rand argument to smime and pkcs12 applications and read/write
8764 *) New 'passwd' tool for crypt(3) and apr1 password hashes.
8767 *) Add command line password options to the remaining applications.
8770 *) Bug fix for BN_div_recp() for numerators with an even number of
8774 *) More tests in bntest.c, and changed test_bn output.
8777 *) ./config recognizes MacOS X now.
8780 *) Bug fix for BN_div() when the first words of num and divsor are
8781 equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0).
8784 *) Add support for various broken PKCS#8 formats, and command line
8785 options to produce them.
8788 *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
8789 get temporary BIGNUMs from a BN_CTX.
8792 *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
8796 *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and
8797 include a #define from the old name to the new. The original intent
8798 was that statically linked binaries could for example just call
8799 SSLeay_add_all_ciphers() to just add ciphers to the table and not
8800 link with digests. This never worked because SSLeay_add_all_digests()
8801 and SSLeay_add_all_ciphers() were in the same source file so calling
8802 one would link with the other. They are now in separate source files.
8805 *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
8808 *) Use a less unusual form of the Miller-Rabin primality test (it used
8809 a binary algorithm for exponentiation integrated into the Miller-Rabin
8810 loop, our standard modexp algorithms are faster).
8813 *) Support for the EBCDIC character set completed.
8814 [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>]
8816 *) Source code cleanups: use const where appropriate, eliminate casts,
8817 use void * instead of char * in lhash.
8820 *) Bugfix: ssl3_send_server_key_exchange was not restartable
8821 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
8822 this the server could overwrite ephemeral keys that the client
8826 *) Turn DSA_is_prime into a macro that calls BN_is_prime,
8827 using 50 iterations of the Rabin-Miller test.
8829 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
8830 iterations of the Rabin-Miller test as required by the appendix
8831 to FIPS PUB 186[-1]) instead of DSA_is_prime.
8832 As BN_is_prime_fasttest includes trial division, DSA parameter
8833 generation becomes much faster.
8835 This implies a change for the callback functions in DSA_is_prime
8836 and DSA_generate_parameters: The callback function is called once
8837 for each positive witness in the Rabin-Miller test, not just
8838 occasionally in the inner loop; and the parameters to the
8839 callback function now provide an iteration count for the outer
8840 loop rather than for the current invocation of the inner loop.
8841 DSA_generate_parameters additionally can call the callback
8842 function with an 'iteration count' of -1, meaning that a
8843 candidate has passed the trial division test (when q is generated
8844 from an application-provided seed, trial division is skipped).
8847 *) New function BN_is_prime_fasttest that optionally does trial
8848 division before starting the Rabin-Miller test and has
8849 an additional BN_CTX * argument (whereas BN_is_prime always
8850 has to allocate at least one BN_CTX).
8851 'callback(1, -1, cb_arg)' is called when a number has passed the
8852 trial division stage.
8855 *) Fix for bug in CRL encoding. The validity dates weren't being handled
8859 *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
8862 *) New function BN_pseudo_rand().
8865 *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
8866 bignum version of BN_from_montgomery() with the working code from
8867 SSLeay 0.9.0 (the word based version is faster anyway), and clean up
8871 *) Avoid a race condition in s2_clnt.c (function get_server_hello) that
8872 made it impossible to use the same SSL_SESSION data structure in
8873 SSL2 clients in multiple threads.
8876 *) The return value of RAND_load_file() no longer counts bytes obtained
8877 by stat(). RAND_load_file(..., -1) is new and uses the complete file
8878 to seed the PRNG (previously an explicit byte count was required).
8879 [Ulf Möller, Bodo Möller]
8881 *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
8882 used (char *) instead of (void *) and had casts all over the place.
8885 *) Make BN_generate_prime() return NULL on error if ret!=NULL.
8888 *) Retain source code compatibility for BN_prime_checks macro:
8889 BN_is_prime(..., BN_prime_checks, ...) now uses
8890 BN_prime_checks_for_size to determine the appropriate number of
8891 Rabin-Miller iterations.
8894 *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
8895 DH_CHECK_P_NOT_SAFE_PRIME.
8896 (Check if this is true? OpenPGP calls them "strong".)
8899 *) Merge the functionality of "dh" and "gendh" programs into a new program
8900 "dhparam". The old programs are retained for now but will handle DH keys
8901 (instead of parameters) in future.
8904 *) Make the ciphers, s_server and s_client programs check the return values
8905 when a new cipher list is set.
8908 *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
8909 ciphers. Before when the 56bit ciphers were enabled the sorting was
8912 The syntax for the cipher sorting has been extended to support sorting by
8913 cipher-strength (using the strength_bits hard coded in the tables).
8914 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
8916 Fix a bug in the cipher-command parser: when supplying a cipher command
8917 string with an "undefined" symbol (neither command nor alphanumeric
8918 [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now
8919 an error is flagged.
8921 Due to the strength-sorting extension, the code of the
8922 ssl_create_cipher_list() function was completely rearranged. I hope that
8923 the readability was also increased :-)
8924 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
8926 *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1
8927 for the first serial number and places 2 in the serial number file. This
8928 avoids problems when the root CA is created with serial number zero and
8929 the first user certificate has the same issuer name and serial number
8933 *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
8934 the new code. Add documentation for this stuff.
8937 *) Changes to X509_ATTRIBUTE utilities. These have been renamed from
8938 X509_*() to X509at_*() on the grounds that they don't handle X509
8939 structures and behave in an analogous way to the X509v3 functions:
8940 they shouldn't be called directly but wrapper functions should be used
8943 So we also now have some wrapper functions that call the X509at functions
8944 when passed certificate requests. (TO DO: similar things can be done with
8945 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
8946 things. Some of these need some d2i or i2d and print functionality
8947 because they handle more complex structures.)
8950 *) Add missing #ifndefs that caused missing symbols when building libssl
8951 as a shared library without RSA. Use #ifndef NO_SSL2 instead of
8952 NO_RSA in ssl/s2*.c.
8953 [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller]
8955 *) Precautions against using the PRNG uninitialized: RAND_bytes() now
8956 has a return value which indicates the quality of the random data
8957 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
8958 error queue. New function RAND_pseudo_bytes() generates output that is
8959 guaranteed to be unique but not unpredictable. RAND_add is like
8960 RAND_seed, but takes an extra argument for an entropy estimate
8961 (RAND_seed always assumes full entropy).
8964 *) Do more iterations of Rabin-Miller probable prime test (specifically,
8965 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
8966 instead of only 2 for all lengths; see BN_prime_checks_for_size definition
8967 in crypto/bn/bn_prime.c for the complete table). This guarantees a
8968 false-positive rate of at most 2^-80 for random input.
8971 *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
8974 *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
8975 in the 0.9.5 release), this returns the chain
8976 from an X509_CTX structure with a dup of the stack and all
8977 the X509 reference counts upped: so the stack will exist
8978 after X509_CTX_cleanup() has been called. Modify pkcs12.c
8981 Also make SSL_SESSION_print() print out the verify return
8985 *) Add manpage for the pkcs12 command. Also change the default
8986 behaviour so MAC iteration counts are used unless the new
8987 -nomaciter option is used. This improves file security and
8988 only older versions of MSIE (4.0 for example) need it.
8991 *) Honor the no-xxx Configure options when creating .DEF files.
8994 *) Add PKCS#10 attributes to field table: challengePassword,
8995 unstructuredName and unstructuredAddress. These are taken from
8996 draft PKCS#9 v2.0 but are compatible with v1.2 provided no
8997 international characters are used.
8999 More changes to X509_ATTRIBUTE code: allow the setting of types
9000 based on strings. Remove the 'loc' parameter when adding
9001 attributes because these will be a SET OF encoding which is sorted
9005 *) Initial changes to the 'req' utility to allow request generation
9006 automation. This will allow an application to just generate a template
9007 file containing all the field values and have req construct the
9010 Initial support for X509_ATTRIBUTE handling. Stacks of these are
9011 used all over the place including certificate requests and PKCS#7
9012 structures. They are currently handled manually where necessary with
9013 some primitive wrappers for PKCS#7. The new functions behave in a
9014 manner analogous to the X509 extension functions: they allow
9015 attributes to be looked up by NID and added.
9017 Later something similar to the X509V3 code would be desirable to
9018 automatically handle the encoding, decoding and printing of the
9019 more complex types. The string types like challengePassword can
9020 be handled by the string table functions.
9022 Also modified the multi byte string table handling. Now there is
9023 a 'global mask' which masks out certain types. The table itself
9024 can use the flag STABLE_NO_MASK to ignore the mask setting: this
9025 is useful when for example there is only one permissible type
9026 (as in countryName) and using the mask might result in no valid
9030 *) Clean up 'Finished' handling, and add functions SSL_get_finished and
9031 SSL_get_peer_finished to allow applications to obtain the latest
9032 Finished messages sent to the peer or expected from the peer,
9033 respectively. (SSL_get_peer_finished is usually the Finished message
9034 actually received from the peer, otherwise the protocol will be aborted.)
9036 As the Finished message are message digests of the complete handshake
9037 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
9038 be used for external authentication procedures when the authentication
9039 provided by SSL/TLS is not desired or is not enough.
9042 *) Enhanced support for Alpha Linux is added. Now ./config checks if
9043 the host supports BWX extension and if Compaq C is present on the
9044 $PATH. Just exploiting of the BWX extension results in 20-30%
9045 performance kick for some algorithms, e.g. DES and RC4 to mention
9046 a couple. Compaq C in turn generates ~20% faster code for MD5 and
9050 *) Add support for MS "fast SGC". This is arguably a violation of the
9051 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
9052 weak crypto and after checking the certificate is SGC a second one
9053 with strong crypto. MS SGC stops the first handshake after receiving
9054 the server certificate message and sends a second client hello. Since
9055 a server will typically do all the time consuming operations before
9056 expecting any further messages from the client (server key exchange
9057 is the most expensive) there is little difference between the two.
9059 To get OpenSSL to support MS SGC we have to permit a second client
9060 hello message after we have sent server done. In addition we have to
9061 reset the MAC if we do get this second client hello.
9064 *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide
9065 if a DER encoded private key is RSA or DSA traditional format. Changed
9066 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
9067 format DER encoded private key. Newer code should use PKCS#8 format which
9068 has the key type encoded in the ASN1 structure. Added DER private key
9069 support to pkcs8 application.
9072 *) SSL 3/TLS 1 servers now don't request certificates when an anonymous
9073 ciphersuites has been selected (as required by the SSL 3/TLS 1
9074 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
9075 is set, we interpret this as a request to violate the specification
9076 (the worst that can happen is a handshake failure, and 'correct'
9077 behaviour would result in a handshake failure anyway).
9080 *) In SSL_CTX_add_session, take into account that there might be multiple
9081 SSL_SESSION structures with the same session ID (e.g. when two threads
9082 concurrently obtain them from an external cache).
9083 The internal cache can handle only one SSL_SESSION with a given ID,
9084 so if there's a conflict, we now throw out the old one to achieve
9088 *) Add OIDs for idea and blowfish in CBC mode. This will allow both
9089 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
9090 some routines that use cipher OIDs: some ciphers do not have OIDs
9091 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
9095 *) Simplify the trust setting structure and code. Now we just have
9096 two sequences of OIDs for trusted and rejected settings. These will
9097 typically have values the same as the extended key usage extension
9098 and any application specific purposes.
9100 The trust checking code now has a default behaviour: it will just
9101 check for an object with the same NID as the passed id. Functions can
9102 be provided to override either the default behaviour or the behaviour
9103 for a given id. SSL client, server and email already have functions
9104 in place for compatibility: they check the NID and also return "trusted"
9105 if the certificate is self signed.
9108 *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the
9109 traditional format into an EVP_PKEY structure.
9112 *) Add a password callback function PEM_cb() which either prompts for
9113 a password if usr_data is NULL or otherwise assumes it is a null
9114 terminated password. Allow passwords to be passed on command line
9115 environment or config files in a few more utilities.
9118 *) Add a bunch of DER and PEM functions to handle PKCS#8 format private
9119 keys. Add some short names for PKCS#8 PBE algorithms and allow them
9120 to be specified on the command line for the pkcs8 and pkcs12 utilities.
9121 Update documentation.
9124 *) Support for ASN1 "NULL" type. This could be handled before by using
9125 ASN1_TYPE but there wasn't any function that would try to read a NULL
9126 and produce an error if it couldn't. For compatibility we also have
9127 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
9128 don't allocate anything because they don't need to.
9131 *) Initial support for MacOS is now provided. Examine INSTALL.MacOS
9133 [Andy Polyakov, Roy Woods <roy@centicsystems.ca>]
9135 *) Rebuild of the memory allocation routines used by OpenSSL code and
9136 possibly others as well. The purpose is to make an interface that
9137 provide hooks so anyone can build a separate set of allocation and
9138 deallocation routines to be used by OpenSSL, for example memory
9139 pool implementations, or something else, which was previously hard
9140 since Malloc(), Realloc() and Free() were defined as macros having
9141 the values malloc, realloc and free, respectively (except for Win32
9142 compilations). The same is provided for memory debugging code.
9143 OpenSSL already comes with functionality to find memory leaks, but
9144 this gives people a chance to debug other memory problems.
9146 With these changes, a new set of functions and macros have appeared:
9148 CRYPTO_set_mem_debug_functions() [F]
9149 CRYPTO_get_mem_debug_functions() [F]
9150 CRYPTO_dbg_set_options() [F]
9151 CRYPTO_dbg_get_options() [F]
9152 CRYPTO_malloc_debug_init() [M]
9154 The memory debug functions are NULL by default, unless the library
9155 is compiled with CRYPTO_MDEBUG or friends is defined. If someone
9156 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
9157 gives the standard debugging functions that come with OpenSSL) or
9158 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
9159 provided by the library user) must be used. When the standard
9160 debugging functions are used, CRYPTO_dbg_set_options can be used to
9161 request additional information:
9162 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
9163 the CRYPTO_MDEBUG_xxx macro when compiling the library.
9165 Also, things like CRYPTO_set_mem_functions will always give the
9166 expected result (the new set of functions is used for allocation
9167 and deallocation) at all times, regardless of platform and compiler
9170 To finish it up, some functions that were never use in any other
9171 way than through macros have a new API and new semantic:
9174 CRYPTO_dbg_realloc()
9177 All macros of value have retained their old syntax.
9178 [Richard Levitte and Bodo Moeller]
9180 *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
9181 ordering of SMIMECapabilities wasn't in "strength order" and there
9182 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
9186 *) Some ASN1 types with illegal zero length encoding (INTEGER,
9187 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
9188 [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson]
9190 *) Merge in my S/MIME library for OpenSSL. This provides a simple
9191 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
9192 functionality to handle multipart/signed properly) and a utility
9193 called 'smime' to call all this stuff. This is based on code I
9194 originally wrote for Celo who have kindly allowed it to be
9195 included in OpenSSL.
9198 *) Add variants des_set_key_checked and des_set_key_unchecked of
9199 des_set_key (aka des_key_sched). Global variable des_check_key
9200 decides which of these is called by des_set_key; this way
9201 des_check_key behaves as it always did, but applications and
9202 the library itself, which was buggy for des_check_key == 1,
9203 have a cleaner way to pick the version they need.
9206 *) New function PKCS12_newpass() which changes the password of a
9210 *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and
9211 dynamic mix. In both cases the ids can be used as an index into the
9212 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
9213 functions so they accept a list of the field values and the
9214 application doesn't need to directly manipulate the X509_TRUST
9218 *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
9222 *) Modify the way the V3 extension code looks up extensions. This now
9223 works in a similar way to the object code: we have some "standard"
9224 extensions in a static table which is searched with OBJ_bsearch()
9225 and the application can add dynamic ones if needed. The file
9226 crypto/x509v3/ext_dat.h now has the info: this file needs to be
9227 updated whenever a new extension is added to the core code and kept
9228 in ext_nid order. There is a simple program 'tabtest.c' which checks
9229 this. New extensions are not added too often so this file can readily
9230 be maintained manually.
9232 There are two big advantages in doing things this way. The extensions
9233 can be looked up immediately and no longer need to be "added" using
9234 X509V3_add_standard_extensions(): this function now does nothing.
9235 [Side note: I get *lots* of email saying the extension code doesn't
9236 work because people forget to call this function]
9237 Also no dynamic allocation is done unless new extensions are added:
9238 so if we don't add custom extensions there is no need to call
9239 X509V3_EXT_cleanup().
9242 *) Modify enc utility's salting as follows: make salting the default. Add a
9243 magic header, so unsalted files fail gracefully instead of just decrypting
9244 to garbage. This is because not salting is a big security hole, so people
9245 should be discouraged from doing it.
9248 *) Fixes and enhancements to the 'x509' utility. It allowed a message
9249 digest to be passed on the command line but it only used this
9250 parameter when signing a certificate. Modified so all relevant
9251 operations are affected by the digest parameter including the
9252 -fingerprint and -x509toreq options. Also -x509toreq choked if a
9253 DSA key was used because it didn't fix the digest.
9256 *) Initial certificate chain verify code. Currently tests the untrusted
9257 certificates for consistency with the verify purpose (which is set
9258 when the X509_STORE_CTX structure is set up) and checks the pathlength.
9260 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
9261 this is because it will reject chains with invalid extensions whereas
9262 every previous version of OpenSSL and SSLeay made no checks at all.
9264 Trust code: checks the root CA for the relevant trust settings. Trust
9265 settings have an initial value consistent with the verify purpose: e.g.
9266 if the verify purpose is for SSL client use it expects the CA to be
9267 trusted for SSL client use. However the default value can be changed to
9268 permit custom trust settings: one example of this would be to only trust
9269 certificates from a specific "secure" set of CAs.
9271 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
9272 which should be used for version portability: especially since the
9273 verify structure is likely to change more often now.
9275 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
9276 to set them. If not set then assume SSL clients will verify SSL servers
9279 Two new options to the verify program: -untrusted allows a set of
9280 untrusted certificates to be passed in and -purpose which sets the
9281 intended purpose of the certificate. If a purpose is set then the
9282 new chain verify code is used to check extension consistency.
9285 *) Support for the authority information access extension.
9288 *) Modify RSA and DSA PEM read routines to transparently handle
9289 PKCS#8 format private keys. New *_PUBKEY_* functions that handle
9290 public keys in a format compatible with certificate
9291 SubjectPublicKeyInfo structures. Unfortunately there were already
9292 functions called *_PublicKey_* which used various odd formats so
9293 these are retained for compatibility: however the DSA variants were
9294 never in a public release so they have been deleted. Changed dsa/rsa
9295 utilities to handle the new format: note no releases ever handled public
9296 keys so we should be OK.
9298 The primary motivation for this change is to avoid the same fiasco
9299 that dogs private keys: there are several incompatible private key
9300 formats some of which are standard and some OpenSSL specific and
9301 require various evil hacks to allow partial transparent handling and
9302 even then it doesn't work with DER formats. Given the option anything
9303 other than PKCS#8 should be dumped: but the other formats have to
9304 stay in the name of compatibility.
9306 With public keys and the benefit of hindsight one standard format
9307 is used which works with EVP_PKEY, RSA or DSA structures: though
9308 it clearly returns an error if you try to read the wrong kind of key.
9310 Added a -pubkey option to the 'x509' utility to output the public key.
9311 Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*()
9312 (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add
9313 EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*())
9314 that do the same as the EVP_PKEY_assign_*() except they up the
9315 reference count of the added key (they don't "swallow" the
9319 *) Fixes to crypto/x509/by_file.c the code to read in certificates and
9320 CRLs would fail if the file contained no certificates or no CRLs:
9321 added a new function to read in both types and return the number
9322 read: this means that if none are read it will be an error. The
9323 DER versions of the certificate and CRL reader would always fail
9324 because it isn't possible to mix certificates and CRLs in DER format
9325 without choking one or the other routine. Changed this to just read
9326 a certificate: this is the best we can do. Also modified the code
9327 in apps/verify.c to take notice of return codes: it was previously
9328 attempting to read in certificates from NULL pointers and ignoring
9329 any errors: this is one reason why the cert and CRL reader seemed
9330 to work. It doesn't check return codes from the default certificate
9331 routines: these may well fail if the certificates aren't installed.
9334 *) Code to support otherName option in GeneralName.
9337 *) First update to verify code. Change the verify utility
9338 so it warns if it is passed a self signed certificate:
9339 for consistency with the normal behaviour. X509_verify
9340 has been modified to it will now verify a self signed
9341 certificate if *exactly* the same certificate appears
9342 in the store: it was previously impossible to trust a
9343 single self signed certificate. This means that:
9344 openssl verify ss.pem
9345 now gives a warning about a self signed certificate but
9346 openssl verify -CAfile ss.pem ss.pem
9350 *) For servers, store verify_result in SSL_SESSION data structure
9351 (and add it to external session representation).
9352 This is needed when client certificate verifications fails,
9353 but an application-provided verification callback (set by
9354 SSL_CTX_set_cert_verify_callback) allows accepting the session
9355 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
9356 but returns 1): When the session is reused, we have to set
9357 ssl->verify_result to the appropriate error code to avoid
9359 [Bodo Moeller, problem pointed out by Lutz Jaenicke]
9361 *) Fix a bug in the new PKCS#7 code: it didn't consider the
9362 case in PKCS7_dataInit() where the signed PKCS7 structure
9363 didn't contain any existing data because it was being created.
9364 [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson]
9366 *) Add a salt to the key derivation routines in enc.c. This
9367 forms the first 8 bytes of the encrypted file. Also add a
9368 -S option to allow a salt to be input on the command line.
9371 *) New function X509_cmp(). Oddly enough there wasn't a function
9372 to compare two certificates. We do this by working out the SHA1
9373 hash and comparing that. X509_cmp() will be needed by the trust
9377 *) SSL_get1_session() is like SSL_get_session(), but increments
9378 the reference count in the SSL_SESSION returned.
9379 [Geoff Thorpe <geoff@eu.c2.net>]
9381 *) Fix for 'req': it was adding a null to request attributes.
9382 Also change the X509_LOOKUP and X509_INFO code to handle
9383 certificate auxiliary information.
9386 *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document
9390 *) Add the possibility to add extra information to the memory leak
9391 detecting output, to form tracebacks, showing from where each
9392 allocation was originated: CRYPTO_push_info("constant string") adds
9393 the string plus current file name and line number to a per-thread
9394 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
9395 is like calling CYRPTO_pop_info() until the stack is empty.
9396 Also updated memory leak detection code to be multi-thread-safe.
9399 *) Add options -text and -noout to pkcs7 utility and delete the
9400 encryption options which never did anything. Update docs.
9403 *) Add options to some of the utilities to allow the pass phrase
9404 to be included on either the command line (not recommended on
9405 OSes like Unix) or read from the environment. Update the
9406 manpages and fix a few bugs.
9409 *) Add a few manpages for some of the openssl commands.
9412 *) Fix the -revoke option in ca. It was freeing up memory twice,
9413 leaking and not finding already revoked certificates.
9416 *) Extensive changes to support certificate auxiliary information.
9417 This involves the use of X509_CERT_AUX structure and X509_AUX
9418 functions. An X509_AUX function such as PEM_read_X509_AUX()
9419 can still read in a certificate file in the usual way but it
9420 will also read in any additional "auxiliary information". By
9421 doing things this way a fair degree of compatibility can be
9422 retained: existing certificates can have this information added
9423 using the new 'x509' options.
9425 Current auxiliary information includes an "alias" and some trust
9426 settings. The trust settings will ultimately be used in enhanced
9427 certificate chain verification routines: currently a certificate
9428 can only be trusted if it is self signed and then it is trusted
9432 *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD).
9433 The problem was that one of the replacement routines had not been working
9434 since SSLeay releases. For now the offending routine has been replaced
9435 with non-optimised assembler. Even so, this now gives around 95%
9436 performance improvement for 1024 bit RSA signs.
9439 *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2
9440 handling. Most clients have the effective key size in bits equal to
9441 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
9442 A few however don't do this and instead use the size of the decrypted key
9443 to determine the RC2 key length and the AlgorithmIdentifier to determine
9444 the effective key length. In this case the effective key length can still
9445 be 40 bits but the key length can be 168 bits for example. This is fixed
9446 by manually forcing an RC2 key into the EVP_PKEY structure because the
9447 EVP code can't currently handle unusual RC2 key sizes: it always assumes
9448 the key length and effective key length are equal.
9451 *) Add a bunch of functions that should simplify the creation of
9452 X509_NAME structures. Now you should be able to do:
9453 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
9454 and have it automatically work out the correct field type and fill in
9455 the structures. The more adventurous can try:
9456 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
9457 and it will (hopefully) work out the correct multibyte encoding.
9460 *) Change the 'req' utility to use the new field handling and multibyte
9461 copy routines. Before the DN field creation was handled in an ad hoc
9462 way in req, ca, and x509 which was rather broken and didn't support
9463 BMPStrings or UTF8Strings. Since some software doesn't implement
9464 BMPStrings or UTF8Strings yet, they can be enabled using the config file
9465 using the dirstring_type option. See the new comment in the default
9466 openssl.cnf for more info.
9469 *) Make crypto/rand/md_rand.c more robust:
9470 - Assure unique random numbers after fork().
9471 - Make sure that concurrent threads access the global counter and
9472 md serializably so that we never lose entropy in them
9473 or use exactly the same state in multiple threads.
9474 Access to the large state is not always serializable because
9475 the additional locking could be a performance killer, and
9476 md should be large enough anyway.
9479 *) New file apps/app_rand.c with commonly needed functionality
9480 for handling the random seed file.
9482 Use the random seed file in some applications that previously did not:
9484 dsaparam -genkey (which also ignored its '-rand' option),
9487 x509 (when signing).
9488 Except on systems with /dev/urandom, it is crucial to have a random
9489 seed file at least for key creation, DSA signing, and for DH exchanges;
9490 for RSA signatures we could do without one.
9492 gendh and gendsa (unlike genrsa) used to read only the first byte
9493 of each file listed in the '-rand' option. The function as previously
9494 found in genrsa is now in app_rand.c and is used by all programs
9495 that support '-rand'.
9498 *) In RAND_write_file, use mode 0600 for creating files;
9499 don't just chmod when it may be too late.
9502 *) Report an error from X509_STORE_load_locations
9503 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
9506 *) New function ASN1_mbstring_copy() this copies a string in either
9507 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
9508 into an ASN1_STRING type. A mask of permissible types is passed
9509 and it chooses the "minimal" type to use or an error if not type
9513 *) Add function equivalents to the various macros in asn1.h. The old
9514 macros are retained with an M_ prefix. Code inside the library can
9515 use the M_ macros. External code (including the openssl utility)
9516 should *NOT* in order to be "shared library friendly".
9519 *) Add various functions that can check a certificate's extensions
9520 to see if it usable for various purposes such as SSL client,
9521 server or S/MIME and CAs of these types. This is currently
9522 VERY EXPERIMENTAL but will ultimately be used for certificate chain
9523 verification. Also added a -purpose flag to x509 utility to
9524 print out all the purposes.
9527 *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated
9531 *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search
9532 for, obtain and decode and extension and obtain its critical flag.
9533 This allows all the necessary extension code to be handled in a
9534 single function call.
9537 *) RC4 tune-up featuring 30-40% performance improvement on most RISC
9538 platforms. See crypto/rc4/rc4_enc.c for further details.
9541 *) New -noout option to asn1parse. This causes no output to be produced
9542 its main use is when combined with -strparse and -out to extract data
9543 from a file (which may not be in ASN.1 format).
9546 *) Fix for pkcs12 program. It was hashing an invalid certificate pointer
9547 when producing the local key id.
9548 [Richard Levitte <levitte@stacken.kth.se>]
9550 *) New option -dhparam in s_server. This allows a DH parameter file to be
9551 stated explicitly. If it is not stated then it tries the first server
9552 certificate file. The previous behaviour hard coded the filename
9556 *) Add -pubin and -pubout options to the rsa and dsa commands. These allow
9557 a public key to be input or output. For example:
9558 openssl rsa -in key.pem -pubout -out pubkey.pem
9559 Also added necessary DSA public key functions to handle this.
9562 *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
9563 in the message. This was handled by allowing
9564 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
9565 [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>]
9567 *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
9568 to the end of the strings whereas this didn't. This would cause problems
9569 if strings read with d2i_ASN1_bytes() were later modified.
9570 [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>]
9572 *) Fix for base64 decode bug. When a base64 bio reads only one line of
9573 data and it contains EOF it will end up returning an error. This is
9574 caused by input 46 bytes long. The cause is due to the way base64
9575 BIOs find the start of base64 encoded data. They do this by trying a
9576 trial decode on each line until they find one that works. When they
9577 do a flag is set and it starts again knowing it can pass all the
9578 data directly through the decoder. Unfortunately it doesn't reset
9579 the context it uses. This means that if EOF is reached an attempt
9580 is made to pass two EOFs through the context and this causes the
9581 resulting error. This can also cause other problems as well. As is
9582 usual with these problems it takes *ages* to find and the fix is
9583 trivial: move one line.
9584 [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ]
9586 *) Ugly workaround to get s_client and s_server working under Windows. The
9587 old code wouldn't work because it needed to select() on sockets and the
9588 tty (for keypresses and to see if data could be written). Win32 only
9589 supports select() on sockets so we select() with a 1s timeout on the
9590 sockets and then see if any characters are waiting to be read, if none
9591 are present then we retry, we also assume we can always write data to
9592 the tty. This isn't nice because the code then blocks until we've
9593 received a complete line of data and it is effectively polling the
9594 keyboard at 1s intervals: however it's quite a bit better than not
9595 working at all :-) A dedicated Windows application might handle this
9596 with an event loop for example.
9599 *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
9600 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
9601 will be called when RSA_sign() and RSA_verify() are used. This is useful
9602 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
9603 For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
9604 should *not* be used: RSA_sign() and RSA_verify() must be used instead.
9605 This necessitated the support of an extra signature type NID_md5_sha1
9606 for SSL signatures and modifications to the SSL library to use it instead
9607 of calling RSA_public_decrypt() and RSA_private_encrypt().
9610 *) Add new -verify -CAfile and -CApath options to the crl program, these
9611 will lookup a CRL issuers certificate and verify the signature in a
9612 similar way to the verify program. Tidy up the crl program so it
9613 no longer accesses structures directly. Make the ASN1 CRL parsing a bit
9614 less strict. It will now permit CRL extensions even if it is not
9615 a V2 CRL: this will allow it to tolerate some broken CRLs.
9618 *) Initialize all non-automatic variables each time one of the openssl
9619 sub-programs is started (this is necessary as they may be started
9620 multiple times from the "OpenSSL>" prompt).
9621 [Lennart Bang, Bodo Moeller]
9623 *) Preliminary compilation option RSA_NULL which disables RSA crypto without
9624 removing all other RSA functionality (this is what NO_RSA does). This
9625 is so (for example) those in the US can disable those operations covered
9626 by the RSA patent while allowing storage and parsing of RSA keys and RSA
9630 *) Non-copying interface to BIO pairs.
9631 (still largely untested)
9634 *) New function ANS1_tag2str() to convert an ASN1 tag to a descriptive
9635 ASCII string. This was handled independently in various places before.
9638 *) New functions UTF8_getc() and UTF8_putc() that parse and generate
9639 UTF8 strings a character at a time.
9642 *) Use client_version from client hello to select the protocol
9643 (s23_srvr.c) and for RSA client key exchange verification
9644 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
9647 *) Add various utility functions to handle SPKACs, these were previously
9648 handled by poking round in the structure internals. Added new function
9649 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
9650 print, verify and generate SPKACs. Based on an original idea from
9651 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
9654 *) RIPEMD160 is operational on all platforms and is back in 'make test'.
9657 *) Allow the config file extension section to be overwritten on the
9658 command line. Based on an original idea from Massimiliano Pala
9659 <madwolf@comune.modena.it>. The new option is called -extensions
9660 and can be applied to ca, req and x509. Also -reqexts to override
9661 the request extensions in req and -crlexts to override the crl extensions
9665 *) Add new feature to the SPKAC handling in ca. Now you can include
9666 the same field multiple times by preceding it by "XXXX." for example:
9669 this is the same syntax as used in the req config file.
9672 *) Allow certificate extensions to be added to certificate requests. These
9673 are specified in a 'req_extensions' option of the req section of the
9674 config file. They can be printed out with the -text option to req but
9675 are otherwise ignored at present.
9678 *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
9679 data read consists of only the final block it would not decrypted because
9680 EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
9681 A misplaced 'break' also meant the decrypted final block might not be
9682 copied until the next read.
9685 *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
9686 a few extra parameters to the DH structure: these will be useful if
9687 for example we want the value of 'q' or implement X9.42 DH.
9690 *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and
9691 provides hooks that allow the default DSA functions or functions on a
9692 "per key" basis to be replaced. This allows hardware acceleration and
9693 hardware key storage to be handled without major modification to the
9694 library. Also added low level modexp hooks and CRYPTO_EX structure and
9695 associated functions.
9698 *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
9699 as "read only": it can't be written to and the buffer it points to will
9700 not be freed. Reading from a read only BIO is much more efficient than
9701 a normal memory BIO. This was added because there are several times when
9702 an area of memory needs to be read from a BIO. The previous method was
9703 to create a memory BIO and write the data to it, this results in two
9704 copies of the data and an O(n^2) reading algorithm. There is a new
9705 function BIO_new_mem_buf() which creates a read only memory BIO from
9706 an area of memory. Also modified the PKCS#7 routines to use read only
9710 *) Bugfix: ssl23_get_client_hello did not work properly when called in
9711 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
9712 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
9713 but a retry condition occured while trying to read the rest.
9716 *) The PKCS7_ENC_CONTENT_new() function was setting the content type as
9717 NID_pkcs7_encrypted by default: this was wrong since this should almost
9718 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
9719 the encrypted data type: this is a more sensible place to put it and it
9720 allows the PKCS#12 code to be tidied up that duplicated this
9724 *) Changed obj_dat.pl script so it takes its input and output files on
9725 the command line. This should avoid shell escape redirection problems
9729 *) Initial support for certificate extension requests, these are included
9730 in things like Xenroll certificate requests. Included functions to allow
9731 extensions to be obtained and added.
9734 *) -crlf option to s_client and s_server for sending newlines as
9735 CRLF (as required by many protocols).
9738 Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
9740 *) Install libRSAglue.a when OpenSSL is built with RSAref.
9741 [Ralf S. Engelschall]
9743 *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency.
9744 [Andrija Antonijevic <TheAntony2@bigfoot.com>]
9746 *) Fix -startdate and -enddate (which was missing) arguments to 'ca'
9750 *) New function DSA_dup_DH, which duplicates DSA parameters/keys as
9751 DH parameters/keys (q is lost during that conversion, but the resulting
9752 DH parameters contain its length).
9754 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
9755 much faster than DH_generate_parameters (which creates parameters
9756 where p = 2*q + 1), and also the smaller q makes DH computations
9757 much more efficient (160-bit exponentiation instead of 1024-bit
9758 exponentiation); so this provides a convenient way to support DHE
9759 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
9760 utter importance to use
9761 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
9763 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
9764 when such DH parameters are used, because otherwise small subgroup
9765 attacks may become possible!
9768 *) Avoid memory leak in i2d_DHparams.
9771 *) Allow the -k option to be used more than once in the enc program:
9772 this allows the same encrypted message to be read by multiple recipients.
9775 *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
9776 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
9777 it will always use the numerical form of the OID, even if it has a short
9781 *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
9782 method only got called if p,q,dmp1,dmq1,iqmp components were present,
9783 otherwise bn_mod_exp was called. In the case of hardware keys for example
9784 no private key components need be present and it might store extra data
9785 in the RSA structure, which cannot be accessed from bn_mod_exp.
9786 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
9787 private key operations.
9790 *) Added support for SPARC Linux.
9793 *) pem_password_cb function type incompatibly changed from
9794 typedef int pem_password_cb(char *buf, int size, int rwflag);
9796 ....(char *buf, int size, int rwflag, void *userdata);
9797 so that applications can pass data to their callbacks:
9798 The PEM[_ASN1]_{read,write}... functions and macros now take an
9799 additional void * argument, which is just handed through whenever
9800 the password callback is called.
9801 [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller]
9803 New function SSL_CTX_set_default_passwd_cb_userdata.
9805 Compatibility note: As many C implementations push function arguments
9806 onto the stack in reverse order, the new library version is likely to
9807 interoperate with programs that have been compiled with the old
9808 pem_password_cb definition (PEM_whatever takes some data that
9809 happens to be on the stack as its last argument, and the callback
9810 just ignores this garbage); but there is no guarantee whatsoever that
9813 *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
9814 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
9815 problems not only on Windows, but also on some Unix platforms.
9816 To avoid problematic command lines, these definitions are now in an
9817 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
9818 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
9821 *) MIPS III/IV assembler module is reimplemented.
9824 *) More DES library cleanups: remove references to srand/rand and
9825 delete an unused file.
9828 *) Add support for the the free Netwide assembler (NASM) under Win32,
9829 since not many people have MASM (ml) and it can be hard to obtain.
9830 This is currently experimental but it seems to work OK and pass all
9831 the tests. Check out INSTALL.W32 for info.
9834 *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
9835 without temporary keys kept an extra copy of the server key,
9836 and connections with temporary keys did not free everything in case
9840 *) New function RSA_check_key and new openssl rsa option -check
9841 for verifying the consistency of RSA keys.
9842 [Ulf Moeller, Bodo Moeller]
9844 *) Various changes to make Win32 compile work:
9845 1. Casts to avoid "loss of data" warnings in p5_crpt2.c
9846 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
9847 comparison" warnings.
9848 3. Add sk_<TYPE>_sort to DEF file generator and do make update.
9851 *) Add a debugging option to PKCS#5 v2 key generation function: when
9852 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
9853 derived keys are printed to stderr.
9856 *) Copy the flags in ASN1_STRING_dup().
9857 [Roman E. Pavlov <pre@mo.msk.ru>]
9859 *) The x509 application mishandled signing requests containing DSA
9860 keys when the signing key was also DSA and the parameters didn't match.
9862 It was supposed to omit the parameters when they matched the signing key:
9863 the verifying software was then supposed to automatically use the CA's
9864 parameters if they were absent from the end user certificate.
9866 Omitting parameters is no longer recommended. The test was also
9867 the wrong way round! This was probably due to unusual behaviour in
9868 EVP_cmp_parameters() which returns 1 if the parameters match.
9869 This meant that parameters were omitted when they *didn't* match and
9870 the certificate was useless. Certificates signed with 'ca' didn't have
9872 [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>]
9874 *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
9875 The interface is as follows:
9876 Applications can use
9877 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
9878 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
9879 "off" is now the default.
9880 The library internally uses
9881 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
9882 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
9883 to disable memory-checking temporarily.
9885 Some inconsistent states that previously were possible (and were
9886 even the default) are now avoided.
9888 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
9889 with each memory chunk allocated; this is occasionally more helpful
9890 than just having a counter.
9892 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
9894 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
9898 *) Introduce "mode" for SSL structures (with defaults in SSL_CTX),
9899 which largely parallels "options", but is for changing API behaviour,
9900 whereas "options" are about protocol behaviour.
9901 Initial "mode" flags are:
9903 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when
9904 a single record has been written.
9905 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write
9906 retries use the same buffer location.
9907 (But all of the contents must be
9911 *) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options
9914 *) Fix problems with no-hmac etc.
9915 [Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>]
9917 *) New functions RSA_get_default_method(), RSA_set_method() and
9918 RSA_get_method(). These allows replacement of RSA_METHODs without having
9919 to mess around with the internals of an RSA structure.
9922 *) Fix memory leaks in DSA_do_sign and DSA_is_prime.
9923 Also really enable memory leak checks in openssl.c and in some
9925 [Chad C. Mulligan, Bodo Moeller]
9927 *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
9928 up the length of negative integers. This has now been simplified to just
9929 store the length when it is first determined and use it later, rather
9930 than trying to keep track of where data is copied and updating it to
9932 [Steve Henson, reported by Brien Wheeler
9933 <bwheeler@authentica-security.com>]
9935 *) Add a new function PKCS7_signatureVerify. This allows the verification
9936 of a PKCS#7 signature but with the signing certificate passed to the
9937 function itself. This contrasts with PKCS7_dataVerify which assumes the
9938 certificate is present in the PKCS#7 structure. This isn't always the
9939 case: certificates can be omitted from a PKCS#7 structure and be
9940 distributed by "out of band" means (such as a certificate database).
9943 *) Complete the PEM_* macros with DECLARE_PEM versions to replace the
9944 function prototypes in pem.h, also change util/mkdef.pl to add the
9945 necessary function names.
9948 *) mk1mf.pl (used by Windows builds) did not properly read the
9949 options set by Configure in the top level Makefile, and Configure
9950 was not even able to write more than one option correctly.
9951 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
9954 *) New functions CONF_load_bio() and CONF_load_fp() to allow a config
9955 file to be loaded from a BIO or FILE pointer. The BIO version will
9956 for example allow memory BIOs to contain config info.
9959 *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
9960 Whoever hopes to achieve shared-library compatibility across versions
9961 must use this, not the compile-time macro.
9962 (Exercise 0.9.4: Which is the minimum library version required by
9964 Note: All this applies only to multi-threaded programs, others don't
9968 *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests
9969 through a BIO pair triggered the default case, i.e.
9970 SSLerr(...,SSL_R_UNKNOWN_STATE).
9973 *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
9974 can use the SSL library even if none of the specific BIOs is
9978 *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
9979 for the encoded length.
9980 [Jeon KyoungHo <khjeon@sds.samsung.co.kr>]
9982 *) Add initial documentation of the X509V3 functions.
9985 *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and
9986 PEM_write_bio_PKCS8PrivateKey() that are equivalent to
9987 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
9988 secure PKCS#8 private key format with a high iteration count.
9991 *) Fix determination of Perl interpreter: A perl or perl5
9992 _directory_ in $PATH was also accepted as the interpreter.
9993 [Ralf S. Engelschall]
9995 *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking
9996 wrong with it but it was very old and did things like calling
9997 PEM_ASN1_read() directly and used MD5 for the hash not to mention some
10001 *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed
10002 to use the new extension code.
10005 *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
10006 with macros. This should make it easier to change their form, add extra
10007 arguments etc. Fix a few PEM prototypes which didn't have cipher as a
10011 *) Add to configuration table a new entry that can specify an alternative
10012 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
10013 according to Mark Crispin <MRC@Panda.COM>.
10017 *) DES CBC did not update the IV. Weird.
10020 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
10021 Changing the behaviour of the former might break existing programs --
10022 where IV updating is needed, des_ncbc_encrypt can be used.
10025 *) When bntest is run from "make test" it drives bc to check its
10026 calculations, as well as internally checking them. If an internal check
10027 fails, it needs to cause bc to give a non-zero result or make test carries
10028 on without noticing the failure. Fixed.
10031 *) DES library cleanups.
10034 *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
10035 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
10036 ciphers. NOTE: although the key derivation function has been verified
10037 against some published test vectors it has not been extensively tested
10038 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
10042 *) Instead of "mkdir -p", which is not fully portable, use new
10043 Perl script "util/mkdir-p.pl".
10046 *) Rewrite the way password based encryption (PBE) is handled. It used to
10047 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
10048 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
10049 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
10050 the 'parameter' field of the AlgorithmIdentifier is passed to the
10051 underlying key generation function so it must do its own ASN1 parsing.
10052 This has also changed the EVP_PBE_CipherInit() function which now has a
10053 'parameter' argument instead of literal salt and iteration count values
10054 and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
10057 *) Support for PKCS#5 v1.5 compatible password based encryption algorithms
10058 and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
10059 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
10060 KEY" because this clashed with PKCS#8 unencrypted string. Since this
10061 value was just used as a "magic string" and not used directly its
10062 value doesn't matter.
10065 *) Introduce some semblance of const correctness to BN. Shame C doesn't
10069 *) "linux-sparc64" configuration (ultrapenguin).
10070 [Ray Miller <ray.miller@oucs.ox.ac.uk>]
10071 "linux-sparc" configuration.
10072 [Christian Forster <fo@hawo.stw.uni-erlangen.de>]
10074 *) config now generates no-xxx options for missing ciphers.
10077 *) Support the EBCDIC character set (work in progress).
10078 File ebcdic.c not yet included because it has a different license.
10079 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
10081 *) Support BS2000/OSD-POSIX.
10082 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
10084 *) Make callbacks for key generation use void * instead of char *.
10087 *) Make S/MIME samples compile (not yet tested).
10090 *) Additional typesafe stacks.
10093 *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
10097 Changes between 0.9.3 and 0.9.3a [29 May 1999]
10099 *) New configuration variant "sco5-gcc".
10101 *) Updated some demos.
10102 [Sean O Riordain, Wade Scholine]
10104 *) Add missing BIO_free at exit of pkcs12 application.
10107 *) Fix memory leak in conf.c.
10110 *) Updates for Win32 to assembler version of MD5.
10113 *) Set #! path to perl in apps/der_chop to where we found it
10114 instead of using a fixed path.
10117 *) SHA library changes for irix64-mips4-cc.
10120 *) Improvements for VMS support.
10124 Changes between 0.9.2b and 0.9.3 [24 May 1999]
10126 *) Bignum library bug fix. IRIX 6 passes "make test" now!
10127 This also avoids the problems with SC4.2 and unpatched SC5.
10128 [Andy Polyakov <appro@fy.chalmers.se>]
10130 *) New functions sk_num, sk_value and sk_set to replace the previous macros.
10131 These are required because of the typesafe stack would otherwise break
10132 existing code. If old code used a structure member which used to be STACK
10133 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
10134 sk_num or sk_value it would produce an error because the num, data members
10135 are not present in STACK_OF. Now it just produces a warning. sk_set
10136 replaces the old method of assigning a value to sk_value
10137 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
10138 that does this will no longer work (and should use sk_set instead) but
10139 this could be regarded as a "questionable" behaviour anyway.
10142 *) Fix most of the other PKCS#7 bugs. The "experimental" code can now
10143 correctly handle encrypted S/MIME data.
10146 *) Change type of various DES function arguments from des_cblock
10147 (which means, in function argument declarations, pointer to char)
10148 to des_cblock * (meaning pointer to array with 8 char elements),
10149 which allows the compiler to do more typechecking; it was like
10150 that back in SSLeay, but with lots of ugly casts.
10152 Introduce new type const_des_cblock.
10155 *) Reorganise the PKCS#7 library and get rid of some of the more obvious
10156 problems: find RecipientInfo structure that matches recipient certificate
10157 and initialise the ASN1 structures properly based on passed cipher.
10160 *) Belatedly make the BN tests actually check the results.
10163 *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
10164 to and from BNs: it was completely broken. New compilation option
10165 NEG_PUBKEY_BUG to allow for some broken certificates that encode public
10166 key elements as negative integers.
10169 *) Reorganize and speed up MD5.
10170 [Andy Polyakov <appro@fy.chalmers.se>]
10173 [Richard Levitte <richard@levitte.org>]
10175 *) New option -out to asn1parse to allow the parsed structure to be
10176 output to a file. This is most useful when combined with the -strparse
10177 option to examine the output of things like OCTET STRINGS.
10180 *) Make SSL library a little more fool-proof by not requiring any longer
10181 that SSL_set_{accept,connect}_state be called before
10182 SSL_{accept,connect} may be used (SSL_set_..._state is omitted
10183 in many applications because usually everything *appeared* to work as
10184 intended anyway -- now it really works as intended).
10187 *) Move openssl.cnf out of lib/.
10190 *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall
10191 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
10192 -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+
10193 [Ralf S. Engelschall]
10195 *) Various fixes to the EVP and PKCS#7 code. It may now be able to
10196 handle PKCS#7 enveloped data properly.
10197 [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve]
10199 *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
10200 copying pointers. The cert_st handling is changed by this in
10201 various ways (and thus what used to be known as ctx->default_cert
10202 is now called ctx->cert, since we don't resort to s->ctx->[default_]cert
10203 any longer when s->cert does not give us what we need).
10204 ssl_cert_instantiate becomes obsolete by this change.
10205 As soon as we've got the new code right (possibly it already is?),
10206 we have solved a couple of bugs of the earlier code where s->cert
10207 was used as if it could not have been shared with other SSL structures.
10209 Note that using the SSL API in certain dirty ways now will result
10210 in different behaviour than observed with earlier library versions:
10211 Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx)
10212 does not influence s as it used to.
10214 In order to clean up things more thoroughly, inside SSL_SESSION
10215 we don't use CERT any longer, but a new structure SESS_CERT
10216 that holds per-session data (if available); currently, this is
10217 the peer's certificate chain and, for clients, the server's certificate
10218 and temporary key. CERT holds only those values that can have
10219 meaningful defaults in an SSL_CTX.
10222 *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
10223 from the internal representation. Various PKCS#7 fixes: remove some
10224 evil casts and set the enc_dig_alg field properly based on the signing
10228 *) Allow PKCS#12 password to be set from the command line or the
10229 environment. Let 'ca' get its config file name from the environment
10230 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
10234 *) Allow certificate policies extension to use an IA5STRING for the
10235 organization field. This is contrary to the PKIX definition but
10236 VeriSign uses it and IE5 only recognises this form. Document 'x509'
10240 *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
10241 without disallowing inline assembler and the like for non-pedantic builds.
10244 *) Support Borland C++ builder.
10245 [Janez Jere <jj@void.si>, modified by Ulf Möller]
10247 *) Support Mingw32.
10250 *) SHA-1 cleanups and performance enhancements.
10251 [Andy Polyakov <appro@fy.chalmers.se>]
10253 *) Sparc v8plus assembler for the bignum library.
10254 [Andy Polyakov <appro@fy.chalmers.se>]
10256 *) Accept any -xxx and +xxx compiler options in Configure.
10259 *) Update HPUX configuration.
10262 *) Add missing sk_<type>_unshift() function to safestack.h
10263 [Ralf S. Engelschall]
10265 *) New function SSL_CTX_use_certificate_chain_file that sets the
10266 "extra_cert"s in addition to the certificate. (This makes sense
10267 only for "PEM" format files, as chains as a whole are not
10271 *) Support verify_depth from the SSL API.
10272 x509_vfy.c had what can be considered an off-by-one-error:
10273 Its depth (which was not part of the external interface)
10274 was actually counting the number of certificates in a chain;
10275 now it really counts the depth.
10278 *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
10279 instead of X509err, which often resulted in confusing error
10280 messages since the error codes are not globally unique
10281 (e.g. an alleged error in ssl3_accept when a certificate
10282 didn't match the private key).
10284 *) New function SSL_CTX_set_session_id_context that allows to set a default
10285 value (so that you don't need SSL_set_session_id_context for each
10286 connection using the SSL_CTX).
10289 *) OAEP decoding bug fix.
10292 *) Support INSTALL_PREFIX for package builders, as proposed by
10296 *) New Configure options "threads" and "no-threads". For systems
10297 where the proper compiler options are known (currently Solaris
10298 and Linux), "threads" is the default.
10301 *) New script util/mklink.pl as a faster substitute for util/mklink.sh.
10304 *) Install various scripts to $(OPENSSLDIR)/misc, not to
10305 $(INSTALLTOP)/bin -- they shouldn't clutter directories
10306 such as /usr/local/bin.
10309 *) "make linux-shared" to build shared libraries.
10310 [Niels Poppe <niels@netbox.org>]
10312 *) New Configure option no-<cipher> (rsa, idea, rc5, ...).
10315 *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
10316 extension adding in x509 utility.
10319 *) Remove NOPROTO sections and error code comments.
10322 *) Partial rewrite of the DEF file generator to now parse the ANSI
10326 *) New Configure options --prefix=DIR and --openssldir=DIR.
10329 *) Complete rewrite of the error code script(s). It is all now handled
10330 by one script at the top level which handles error code gathering,
10331 header rewriting and C source file generation. It should be much better
10332 than the old method: it now uses a modified version of Ulf's parser to
10333 read the ANSI prototypes in all header files (thus the old K&R definitions
10334 aren't needed for error creation any more) and do a better job of
10335 translating function codes into names. The old 'ASN1 error code imbedded
10336 in a comment' is no longer necessary and it doesn't use .err files which
10337 have now been deleted. Also the error code call doesn't have to appear all
10338 on one line (which resulted in some large lines...).
10341 *) Change #include filenames from <foo.h> to <openssl/foo.h>.
10344 *) Change behaviour of ssl2_read when facing length-0 packets: Don't return
10345 0 (which usually indicates a closed connection), but continue reading.
10348 *) Fix some race conditions.
10351 *) Add support for CRL distribution points extension. Add Certificate
10352 Policies and CRL distribution points documentation.
10355 *) Move the autogenerated header file parts to crypto/opensslconf.h.
10358 *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
10359 8 of keying material. Merlin has also confirmed interop with this fix
10360 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
10361 [Merlin Hughes <merlin@baltimore.ie>]
10363 *) Fix lots of warnings.
10364 [Richard Levitte <levitte@stacken.kth.se>]
10366 *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
10367 the directory spec didn't end with a LIST_SEPARATOR_CHAR.
10368 [Richard Levitte <levitte@stacken.kth.se>]
10370 *) Fix problems with sizeof(long) == 8.
10371 [Andy Polyakov <appro@fy.chalmers.se>]
10373 *) Change functions to ANSI C.
10376 *) Fix typos in error codes.
10377 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller]
10379 *) Remove defunct assembler files from Configure.
10382 *) SPARC v8 assembler BIGNUM implementation.
10383 [Andy Polyakov <appro@fy.chalmers.se>]
10385 *) Support for Certificate Policies extension: both print and set.
10386 Various additions to support the r2i method this uses.
10389 *) A lot of constification, and fix a bug in X509_NAME_oneline() that could
10390 return a const string when you are expecting an allocated buffer.
10393 *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
10394 types DirectoryString and DisplayText.
10397 *) Add code to allow r2i extensions to access the configuration database,
10398 add an LHASH database driver and add several ctx helper functions.
10401 *) Fix an evil bug in bn_expand2() which caused various BN functions to
10402 fail when they extended the size of a BIGNUM.
10405 *) Various utility functions to handle SXNet extension. Modify mkdef.pl to
10406 support typesafe stack.
10409 *) Fix typo in SSL_[gs]et_options().
10410 [Nils Frostberg <nils@medcom.se>]
10412 *) Delete various functions and files that belonged to the (now obsolete)
10413 old X509V3 handling code.
10416 *) New Configure option "rsaref".
10419 *) Don't auto-generate pem.h.
10422 *) Introduce type-safe ASN.1 SETs.
10425 *) Convert various additional casted stacks to type-safe STACK_OF() variants.
10426 [Ben Laurie, Ralf S. Engelschall, Steve Henson]
10428 *) Introduce type-safe STACKs. This will almost certainly break lots of code
10429 that links with OpenSSL (well at least cause lots of warnings), but fear
10430 not: the conversion is trivial, and it eliminates loads of evil casts. A
10431 few STACKed things have been converted already. Feel free to convert more.
10432 In the fullness of time, I'll do away with the STACK type altogether.
10435 *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate
10436 specified in <certfile> by updating the entry in the index.txt file.
10437 This way one no longer has to edit the index.txt file manually for
10438 revoking a certificate. The -revoke option does the gory details now.
10439 [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall]
10441 *) Fix `openssl crl -noout -text' combination where `-noout' killed the
10442 `-text' option at all and this way the `-noout -text' combination was
10443 inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'.
10444 [Ralf S. Engelschall]
10446 *) Make sure a corresponding plain text error message exists for the
10447 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
10448 verify callback function determined that a certificate was revoked.
10449 [Ralf S. Engelschall]
10451 *) Bugfix: In test/testenc, don't test "openssl <cipher>" for
10452 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test
10453 all available cipers including rc5, which was forgotten until now.
10454 In order to let the testing shell script know which algorithms
10455 are available, a new (up to now undocumented) command
10456 "openssl list-cipher-commands" is used.
10459 *) Bugfix: s_client occasionally would sleep in select() when
10460 it should have checked SSL_pending() first.
10463 *) New functions DSA_do_sign and DSA_do_verify to provide access to
10464 the raw DSA values prior to ASN.1 encoding.
10467 *) Tweaks to Configure
10468 [Niels Poppe <niels@netbox.org>]
10470 *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
10474 *) New variables $(RANLIB) and $(PERL) in the Makefiles.
10477 *) New config option to avoid instructions that are illegal on the 80386.
10478 The default code is faster, but requires at least a 486.
10481 *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
10482 SSL2_SERVER_VERSION (not used at all) macros, which are now the
10483 same as SSL2_VERSION anyway.
10486 *) New "-showcerts" option for s_client.
10489 *) Still more PKCS#12 integration. Add pkcs12 application to openssl
10490 application. Various cleanups and fixes.
10493 *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
10494 modify error routines to work internally. Add error codes and PBE init
10495 to library startup routines.
10498 *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and
10499 packing functions to asn1 and evp. Changed function names and error
10500 codes along the way.
10503 *) PKCS12 integration: and so it begins... First of several patches to
10504 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
10505 objects to objects.h
10508 *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1
10509 and display support for Thawte strong extranet extension.
10512 *) Add LinuxPPC support.
10513 [Jeff Dubrule <igor@pobox.org>]
10515 *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
10516 bn_div_words in alpha.s.
10517 [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie]
10519 *) Make sure the RSA OAEP test is skipped under -DRSAref because
10520 OAEP isn't supported when OpenSSL is built with RSAref.
10521 [Ulf Moeller <ulf@fitug.de>]
10523 *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
10524 so they no longer are missing under -DNOPROTO.
10525 [Soren S. Jorvang <soren@t.dk>]
10528 Changes between 0.9.1c and 0.9.2b [22 Mar 1999]
10530 *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
10531 doesn't work when the session is reused. Coming soon!
10534 *) Fix a security hole, that allows sessions to be reused in the wrong
10535 context thus bypassing client cert protection! All software that uses
10536 client certs and session caches in multiple contexts NEEDS PATCHING to
10537 allow session reuse! A fuller solution is in the works.
10538 [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)]
10540 *) Some more source tree cleanups (removed obsolete files
10541 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
10542 permission on "config" script to be executable) and a fix for the INSTALL
10544 [Ulf Moeller <ulf@fitug.de>]
10546 *) Remove some legacy and erroneous uses of malloc, free instead of
10548 [Lennart Bang <lob@netstream.se>, with minor changes by Steve]
10550 *) Make rsa_oaep_test return non-zero on error.
10551 [Ulf Moeller <ulf@fitug.de>]
10553 *) Add support for native Solaris shared libraries. Configure
10554 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
10555 if someone would make that last step automatic.
10556 [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>]
10558 *) ctx_size was not built with the right compiler during "make links". Fixed.
10561 *) Change the meaning of 'ALL' in the cipher list. It now means "everything
10562 except NULL ciphers". This means the default cipher list will no longer
10563 enable NULL ciphers. They need to be specifically enabled e.g. with
10564 the string "DEFAULT:eNULL".
10567 *) Fix to RSA private encryption routines: if p < q then it would
10568 occasionally produce an invalid result. This will only happen with
10569 externally generated keys because OpenSSL (and SSLeay) ensure p > q.
10572 *) Be less restrictive and allow also `perl util/perlpath.pl
10573 /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin',
10574 because this way one can also use an interpreter named `perl5' (which is
10575 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
10576 installed as `perl').
10577 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
10579 *) Let util/clean-depend.pl work also with older Perl 5.00x versions.
10580 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
10582 *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
10583 advapi32.lib to Win32 build and change the pem test comparison
10584 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
10585 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
10586 and crypto/des/ede_cbcm_enc.c.
10589 *) DES quad checksum was broken on big-endian architectures. Fixed.
10592 *) Comment out two functions in bio.h that aren't implemented. Fix up the
10593 Win32 test batch file so it (might) work again. The Win32 test batch file
10594 is horrible: I feel ill....
10597 *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
10598 in e_os.h. Audit of header files to check ANSI and non ANSI
10599 sections: 10 functions were absent from non ANSI section and not exported
10600 from Windows DLLs. Fixed up libeay.num for new functions.
10603 *) Make `openssl version' output lines consistent.
10604 [Ralf S. Engelschall]
10606 *) Fix Win32 symbol export lists for BIO functions: Added
10607 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
10608 to ms/libeay{16,32}.def.
10609 [Ralf S. Engelschall]
10611 *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
10612 fine under Unix and passes some trivial tests I've now added. But the
10613 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
10614 added to make sure no one expects that this stuff really works in the
10615 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources
10616 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
10618 [Ralf S. Engelschall]
10620 *) Fix the generation of two part addresses in perl.
10621 [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie]
10623 *) Add config entry for Linux on MIPS.
10624 [John Tobey <jtobey@channel1.com>]
10626 *) Make links whenever Configure is run, unless we are on Windoze.
10629 *) Permit extensions to be added to CRLs using crl_section in openssl.cnf.
10630 Currently only issuerAltName and AuthorityKeyIdentifier make any sense
10634 *) Add a useful kludge to allow package maintainers to specify compiler and
10635 other platforms details on the command line without having to patch the
10636 Configure script everytime: One now can use ``perl Configure
10637 <id>:<details>'', i.e. platform ids are allowed to have details appended
10638 to them (separated by colons). This is treated as there would be a static
10639 pre-configured entry in Configure's %table under key <id> with value
10640 <details> and ``perl Configure <id>'' is called. So, when you want to
10641 perform a quick test-compile under FreeBSD 3.1 with pgcc and without
10642 assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"''
10643 now, which overrides the FreeBSD-elf entry on-the-fly.
10644 [Ralf S. Engelschall]
10646 *) Disable new TLS1 ciphersuites by default: they aren't official yet.
10649 *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
10650 on the `perl Configure ...' command line. This way one can compile
10651 OpenSSL libraries with Position Independent Code (PIC) which is needed
10652 for linking it into DSOs.
10653 [Ralf S. Engelschall]
10655 *) Remarkably, export ciphers were totally broken and no-one had noticed!
10659 *) Cleaned up the LICENSE document: The official contact for any license
10660 questions now is the OpenSSL core team under openssl-core@openssl.org.
10661 And add a paragraph about the dual-license situation to make sure people
10662 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
10663 to the OpenSSL toolkit.
10664 [Ralf S. Engelschall]
10666 *) General source tree makefile cleanups: Made `making xxx in yyy...'
10667 display consistent in the source tree and replaced `/bin/rm' by `rm'.
10668 Additionally cleaned up the `make links' target: Remove unnecessary
10669 semicolons, subsequent redundant removes, inline point.sh into mklink.sh
10670 to speed processing and no longer clutter the display with confusing
10671 stuff. Instead only the actually done links are displayed.
10672 [Ralf S. Engelschall]
10674 *) Permit null encryption ciphersuites, used for authentication only. It used
10675 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
10676 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
10680 *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
10681 signed attributes when verifying signatures (this would break them),
10682 the detached data encoding was wrong and public keys obtained using
10683 X509_get_pubkey() weren't freed.
10686 *) Add text documentation for the BUFFER functions. Also added a work around
10687 to a Win95 console bug. This was triggered by the password read stuff: the
10688 last character typed gets carried over to the next fread(). If you were
10689 generating a new cert request using 'req' for example then the last
10690 character of the passphrase would be CR which would then enter the first
10694 *) Added the new `Includes OpenSSL Cryptography Software' button as
10695 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
10696 button and can be used by applications based on OpenSSL to show the
10697 relationship to the OpenSSL project.
10698 [Ralf S. Engelschall]
10700 *) Remove confusing variables in function signatures in files
10701 ssl/ssl_lib.c and ssl/ssl.h.
10702 [Lennart Bong <lob@kulthea.stacken.kth.se>]
10704 *) Don't install bss_file.c under PREFIX/include/
10705 [Lennart Bong <lob@kulthea.stacken.kth.se>]
10707 *) Get the Win32 compile working again. Modify mkdef.pl so it can handle
10708 functions that return function pointers and has support for NT specific
10709 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
10710 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
10711 unsigned to signed types: this was killing the Win32 compile.
10714 *) Add new certificate file to stack functions,
10715 SSL_add_dir_cert_subjects_to_stack() and
10716 SSL_add_file_cert_subjects_to_stack(). These largely supplant
10717 SSL_load_client_CA_file(), and can be used to add multiple certs easily
10718 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
10719 This means that Apache-SSL and similar packages don't have to mess around
10720 to add as many CAs as they want to the preferred list.
10723 *) Experiment with doxygen documentation. Currently only partially applied to
10725 See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with
10726 openssl.doxy as the configuration file.
10729 *) Get rid of remaining C++-style comments which strict C compilers hate.
10730 [Ralf S. Engelschall, pointed out by Carlos Amengual]
10732 *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
10733 compiled in by default: it has problems with large keys.
10736 *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
10737 DH private keys and/or callback functions which directly correspond to
10738 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
10739 is needed for applications which have to configure certificates on a
10740 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
10742 For the RSA certificate situation is makes no difference, but
10743 for the DSA certificate situation this fixes the "no shared cipher"
10744 problem where the OpenSSL cipher selection procedure failed because the
10745 temporary keys were not overtaken from the context and the API provided
10746 no way to reconfigure them.
10747 The new functions now let applications reconfigure the stuff and they
10748 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
10749 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new
10750 non-public-API function ssl_cert_instantiate() is used as a helper
10751 function and also to reduce code redundancy inside ssl_rsa.c.
10752 [Ralf S. Engelschall]
10754 *) Move s_server -dcert and -dkey options out of the undocumented feature
10755 area because they are useful for the DSA situation and should be
10756 recognized by the users.
10757 [Ralf S. Engelschall]
10759 *) Fix the cipher decision scheme for export ciphers: the export bits are
10760 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
10761 SSL_EXP_MASK. So, the original variable has to be used instead of the
10762 already masked variable.
10763 [Richard Levitte <levitte@stacken.kth.se>]
10765 *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c
10766 [Richard Levitte <levitte@stacken.kth.se>]
10768 *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
10769 from `int' to `unsigned int' because it's a length and initialized by
10770 EVP_DigestFinal() which expects an `unsigned int *'.
10771 [Richard Levitte <levitte@stacken.kth.se>]
10773 *) Don't hard-code path to Perl interpreter on shebang line of Configure
10774 script. Instead use the usual Shell->Perl transition trick.
10775 [Ralf S. Engelschall]
10777 *) Make `openssl x509 -noout -modulus' functional also for DSA certificates
10778 (in addition to RSA certificates) to match the behaviour of `openssl dsa
10779 -noout -modulus' as it's already the case for `openssl rsa -noout
10780 -modulus'. For RSA the -modulus is the real "modulus" while for DSA
10781 currently the public key is printed (a decision which was already done by
10782 `openssl dsa -modulus' in the past) which serves a similar purpose.
10783 Additionally the NO_RSA no longer completely removes the whole -modulus
10784 option; it now only avoids using the RSA stuff. Same applies to NO_DSA
10786 [Ralf S. Engelschall]
10788 *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
10789 BIO. See the source (crypto/evp/bio_ok.c) for more info.
10790 [Arne Ansper <arne@ats.cyber.ee>]
10792 *) Dump the old yucky req code that tried (and failed) to allow raw OIDs
10793 to be added. Now both 'req' and 'ca' can use new objects defined in the
10797 *) Add cool BIO that does syslog (or event log on NT).
10798 [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie]
10800 *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
10801 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
10802 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
10803 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
10806 *) Add preliminary config info for new extension code.
10809 *) Make RSA_NO_PADDING really use no padding.
10810 [Ulf Moeller <ulf@fitug.de>]
10812 *) Generate errors when private/public key check is done.
10815 *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
10816 for some CRL extensions and new objects added.
10819 *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private
10820 key usage extension and fuller support for authority key id.
10823 *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
10824 padding method for RSA, which is recommended for new applications in PKCS
10825 #1 v2.0 (RFC 2437, October 1998).
10826 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
10827 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
10828 against Bleichbacher's attack on RSA.
10829 [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
10832 *) Updates to the new SSL compression code
10833 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
10835 *) Fix so that the version number in the master secret, when passed
10836 via RSA, checks that if TLS was proposed, but we roll back to SSLv3
10837 (because the server will not accept higher), that the version number
10838 is 0x03,0x01, not 0x03,0x00
10839 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
10841 *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
10842 leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
10843 in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
10846 *) Support for RAW extensions where an arbitrary extension can be
10847 created by including its DER encoding. See apps/openssl.cnf for
10851 *) Make sure latest Perl versions don't interpret some generated C array
10852 code as Perl array code in the crypto/err/err_genc.pl script.
10853 [Lars Weber <3weber@informatik.uni-hamburg.de>]
10855 *) Modify ms/do_ms.bat to not generate assembly language makefiles since
10856 not many people have the assembler. Various Win32 compilation fixes and
10857 update to the INSTALL.W32 file with (hopefully) more accurate Win32
10858 build instructions.
10861 *) Modify configure script 'Configure' to automatically create crypto/date.h
10862 file under Win32 and also build pem.h from pem.org. New script
10863 util/mkfiles.pl to create the MINFO file on environments that can't do a
10864 'make files': perl util/mkfiles.pl >MINFO should work.
10867 *) Major rework of DES function declarations, in the pursuit of correctness
10868 and purity. As a result, many evil casts evaporated, and some weirdness,
10869 too. You may find this causes warnings in your code. Zapping your evil
10870 casts will probably fix them. Mostly.
10873 *) Fix for a typo in asn1.h. Bug fix to object creation script
10874 obj_dat.pl. It considered a zero in an object definition to mean
10875 "end of object": none of the objects in objects.h have any zeros
10876 so it wasn't spotted.
10877 [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>]
10879 *) Add support for Triple DES Cipher Block Chaining with Output Feedback
10880 Masking (CBCM). In the absence of test vectors, the best I have been able
10881 to do is check that the decrypt undoes the encrypt, so far. Send me test
10882 vectors if you have them.
10885 *) Correct calculation of key length for export ciphers (too much space was
10886 allocated for null ciphers). This has not been tested!
10889 *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage
10890 message is now correct (it understands "crypto" and "ssl" on its
10891 command line). There is also now an "update" option. This will update
10892 the util/ssleay.num and util/libeay.num files with any new functions.
10894 perl util/mkdef.pl crypto ssl update
10895 it will update them.
10898 *) Overhauled the Perl interface (perl/*):
10899 - ported BN stuff to OpenSSL's different BN library
10900 - made the perl/ source tree CVS-aware
10901 - renamed the package from SSLeay to OpenSSL (the files still contain
10902 their history because I've copied them in the repository)
10903 - removed obsolete files (the test scripts will be replaced
10904 by better Test::Harness variants in the future)
10905 [Ralf S. Engelschall]
10907 *) First cut for a very conservative source tree cleanup:
10908 1. merge various obsolete readme texts into doc/ssleay.txt
10909 where we collect the old documents and readme texts.
10910 2. remove the first part of files where I'm already sure that we no
10911 longer need them because of three reasons: either they are just temporary
10912 files which were left by Eric or they are preserved original files where
10913 I've verified that the diff is also available in the CVS via "cvs diff
10914 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
10915 the crypto/md/ stuff).
10916 [Ralf S. Engelschall]
10918 *) More extension code. Incomplete support for subject and issuer alt
10919 name, issuer and authority key id. Change the i2v function parameters
10920 and add an extra 'crl' parameter in the X509V3_CTX structure: guess
10921 what that's for :-) Fix to ASN1 macro which messed up
10922 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
10925 *) Preliminary support for ENUMERATED type. This is largely copied from the
10929 *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
10930 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
10932 *) Make sure `make rehash' target really finds the `openssl' program.
10933 [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
10935 *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
10936 like to hear about it if this slows down other processors.
10939 *) Add CygWin32 platform information to Configure script.
10940 [Alan Batie <batie@aahz.jf.intel.com>]
10942 *) Fixed ms/32all.bat script: `no_asm' -> `no-asm'
10943 [Rainer W. Gerling <gerling@mpg-gv.mpg.de>]
10945 *) New program nseq to manipulate netscape certificate sequences
10948 *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
10952 *) Fixes to BN code. Previously the default was to define BN_RECURSION
10953 but the BN code had some problems that would cause failures when
10954 doing certificate verification and some other functions.
10955 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
10957 *) Add ASN1 and PEM code to support netscape certificate sequences.
10960 *) Add ASN1 and PEM code to support netscape certificate sequences.
10963 *) Add several PKIX and private extended key usage OIDs.
10966 *) Modify the 'ca' program to handle the new extension code. Modify
10967 openssl.cnf for new extension format, add comments.
10970 *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
10971 and add a sample to openssl.cnf so req -x509 now adds appropriate
10975 *) Continued X509 V3 changes. Add to other makefiles, integrate with the
10976 error code, add initial support to X509_print() and x509 application.
10979 *) Takes a deep breath and start adding X509 V3 extension support code. Add
10980 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
10981 stuff is currently isolated and isn't even compiled yet.
10984 *) Continuing patches for GeneralizedTime. Fix up certificate and CRL
10985 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
10986 Removed the versions check from X509 routines when loading extensions:
10987 this allows certain broken certificates that don't set the version
10988 properly to be processed.
10991 *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
10992 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
10993 can still be regenerated with "make depend".
10996 *) Spelling mistake in C version of CAST-128.
10997 [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>]
10999 *) Changes to the error generation code. The perl script err-code.pl
11000 now reads in the old error codes and retains the old numbers, only
11001 adding new ones if necessary. It also only changes the .err files if new
11002 codes are added. The makefiles have been modified to only insert errors
11003 when needed (to avoid needlessly modifying header files). This is done
11004 by only inserting errors if the .err file is newer than the auto generated
11005 C file. To rebuild all the error codes from scratch (the old behaviour)
11006 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
11007 or delete all the .err files.
11010 *) CAST-128 was incorrectly implemented for short keys. The C version has
11011 been fixed, but is untested. The assembler versions are also fixed, but
11012 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
11013 to regenerate it if needed.
11014 [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
11015 Hagino <itojun@kame.net>]
11017 *) File was opened incorrectly in randfile.c.
11018 [Ulf Möller <ulf@fitug.de>]
11020 *) Beginning of support for GeneralizedTime. d2i, i2d, check and print
11021 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
11022 GeneralizedTime. ASN1_TIME is the proper type used in certificates et
11023 al: it's just almost always a UTCTime. Note this patch adds new error
11024 codes so do a "make errors" if there are problems.
11027 *) Correct Linux 1 recognition in config.
11028 [Ulf Möller <ulf@fitug.de>]
11030 *) Remove pointless MD5 hash when using DSA keys in ca.
11031 [Anonymous <nobody@replay.com>]
11033 *) Generate an error if given an empty string as a cert directory. Also
11034 generate an error if handed NULL (previously returned 0 to indicate an
11035 error, but didn't set one).
11036 [Ben Laurie, reported by Anonymous <nobody@replay.com>]
11038 *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
11041 *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
11042 parameters. This was causing a warning which killed off the Win32 compile.
11045 *) Remove C++ style comments from crypto/bn/bn_local.h.
11046 [Neil Costigan <neil.costigan@celocom.com>]
11048 *) The function OBJ_txt2nid was broken. It was supposed to return a nid
11049 based on a text string, looking up short and long names and finally
11050 "dot" format. The "dot" format stuff didn't work. Added new function
11051 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
11052 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
11053 OID is not part of the table.
11056 *) Add prototypes to X509 lookup/verify methods, fixing a bug in
11057 X509_LOOKUP_by_alias().
11060 *) Sort openssl functions by name.
11063 *) Get the gendsa program working (hopefully) and add it to app list. Remove
11064 encryption from sample DSA keys (in case anyone is interested the password
11068 *) Make _all_ *_free functions accept a NULL pointer.
11069 [Frans Heymans <fheymans@isaserver.be>]
11071 *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use
11073 [Anonymous <nobody@replay.com>]
11075 *) s_server should send the CAfile as acceptable CAs, not its own cert.
11076 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
11078 *) Don't blow it for numeric -newkey arguments to apps/req.
11079 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
11081 *) Temp key "for export" tests were wrong in s3_srvr.c.
11082 [Anonymous <nobody@replay.com>]
11084 *) Add prototype for temp key callback functions
11085 SSL_CTX_set_tmp_{rsa,dh}_callback().
11088 *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
11089 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
11092 *) X509_name_add_entry() freed the wrong thing after an error.
11093 [Arne Ansper <arne@ats.cyber.ee>]
11095 *) rsa_eay.c would attempt to free a NULL context.
11096 [Arne Ansper <arne@ats.cyber.ee>]
11098 *) BIO_s_socket() had a broken should_retry() on Windoze.
11099 [Arne Ansper <arne@ats.cyber.ee>]
11101 *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
11102 [Arne Ansper <arne@ats.cyber.ee>]
11104 *) Make sure the already existing X509_STORE->depth variable is initialized
11105 in X509_STORE_new(), but document the fact that this variable is still
11106 unused in the certificate verification process.
11107 [Ralf S. Engelschall]
11109 *) Fix the various library and apps files to free up pkeys obtained from
11110 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
11113 *) Fix reference counting in X509_PUBKEY_get(). This makes
11114 demos/maurice/example2.c work, amongst others, probably.
11115 [Steve Henson and Ben Laurie]
11117 *) First cut of a cleanup for apps/. First the `ssleay' program is now named
11118 `openssl' and second, the shortcut symlinks for the `openssl <command>'
11119 are no longer created. This way we have a single and consistent command
11120 line interface `openssl <command>', similar to `cvs <command>'.
11121 [Ralf S. Engelschall, Paul Sutton and Ben Laurie]
11123 *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
11124 BIT STRING wrapper always have zero unused bits.
11127 *) Add CA.pl, perl version of CA.sh, add extended key usage OID.
11130 *) Make the top-level INSTALL documentation easier to understand.
11133 *) Makefiles updated to exit if an error occurs in a sub-directory
11134 make (including if user presses ^C) [Paul Sutton]
11136 *) Make Montgomery context stuff explicit in RSA data structure.
11139 *) Fix build order of pem and err to allow for generated pem.h.
11142 *) Fix renumbering bug in X509_NAME_delete_entry().
11145 *) Enhanced the err-ins.pl script so it makes the error library number
11146 global and can add a library name. This is needed for external ASN1 and
11147 other error libraries.
11150 *) Fixed sk_insert which never worked properly.
11153 *) Fix ASN1 macros so they can handle indefinite length constructed
11154 EXPLICIT tags. Some non standard certificates use these: they can now
11158 *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
11159 into a single doc/ssleay.txt bundle. This way the information is still
11160 preserved but no longer messes up this directory. Now it's new room for
11161 the new set of documentation files.
11162 [Ralf S. Engelschall]
11164 *) SETs were incorrectly DER encoded. This was a major pain, because they
11165 shared code with SEQUENCEs, which aren't coded the same. This means that
11166 almost everything to do with SETs or SEQUENCEs has either changed name or
11167 number of arguments.
11168 [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>]
11170 *) Fix test data to work with the above.
11173 *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
11174 was already fixed by Eric for 0.9.1 it seems.
11175 [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>]
11177 *) Autodetect FreeBSD3.
11180 *) Fix various bugs in Configure. This affects the following platforms:
11184 unixware-2.0-pentium
11188 *) Eliminate generated files from CVS. Reorder tests to regenerate files
11189 before they are needed.
11192 *) Generate Makefile.ssl from Makefile.org (to keep CVS happy).
11196 Changes between 0.9.1b and 0.9.1c [23-Dec-1998]
11198 *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
11199 changed SSLeay to OpenSSL in version strings.
11200 [Ralf S. Engelschall]
11202 *) Some fixups to the top-level documents.
11205 *) Fixed the nasty bug where rsaref.h was not found under compile-time
11206 because the symlink to include/ was missing.
11207 [Ralf S. Engelschall]
11209 *) Incorporated the popular no-RSA/DSA-only patches
11210 which allow to compile a RSA-free SSLeay.
11211 [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall]
11213 *) Fixed nasty rehash problem under `make -f Makefile.ssl links'
11214 when "ssleay" is still not found.
11215 [Ralf S. Engelschall]
11217 *) Added more platforms to Configure: Cray T3E, HPUX 11,
11218 [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>]
11220 *) Updated the README file.
11221 [Ralf S. Engelschall]
11223 *) Added various .cvsignore files in the CVS repository subdirs
11224 to make a "cvs update" really silent.
11225 [Ralf S. Engelschall]
11227 *) Recompiled the error-definition header files and added
11228 missing symbols to the Win32 linker tables.
11229 [Ralf S. Engelschall]
11231 *) Cleaned up the top-level documents;
11232 o new files: CHANGES and LICENSE
11233 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
11234 o merged COPYRIGHT into LICENSE
11235 o removed obsolete TODO file
11236 o renamed MICROSOFT to INSTALL.W32
11237 [Ralf S. Engelschall]
11239 *) Removed dummy files from the 0.9.1b source tree:
11240 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
11241 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
11242 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
11243 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
11244 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
11245 [Ralf S. Engelschall]
11247 *) Added various platform portability fixes.
11250 *) The Genesis of the OpenSSL rpject:
11251 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
11252 Young and Tim J. Hudson created while they were working for C2Net until
11254 [The OpenSSL Project]
11257 Changes between 0.9.0b and 0.9.1b [not released]
11259 *) Updated a few CA certificates under certs/
11262 *) Changed some BIGNUM api stuff.
11265 *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
11266 DGUX x86, Linux Alpha, etc.
11269 *) New COMP library [crypto/comp/] for SSL Record Layer Compression:
11270 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
11274 *) Add -strparse option to asn1pars program which parses nested
11276 [Dr Stephen Henson <shenson@bigfoot.com>]
11278 *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
11281 *) DSA fix for "ca" program.
11284 *) Added "-genkey" option to "dsaparam" program.
11287 *) Added RIPE MD160 (rmd160) message digest.
11290 *) Added -a (all) option to "ssleay version" command.
11293 *) Added PLATFORM define which is the id given to Configure.
11296 *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
11299 *) Extended the ASN.1 parser routines.
11302 *) Extended BIO routines to support REUSEADDR, seek, tell, etc.
11305 *) Added a BN_CTX to the BN library.
11308 *) Fixed the weak key values in DES library
11311 *) Changed API in EVP library for cipher aliases.
11314 *) Added support for RC2/64bit cipher.
11317 *) Converted the lhash library to the crypto/mem.c functions.
11320 *) Added more recognized ASN.1 object ids.
11323 *) Added more RSA padding checks for SSL/TLS.
11326 *) Added BIO proxy/filter functionality.
11329 *) Added extra_certs to SSL_CTX which can be used
11330 send extra CA certificates to the client in the CA cert chain sending
11331 process. It can be configured with SSL_CTX_add_extra_chain_cert().
11334 *) Now Fortezza is denied in the authentication phase because
11335 this is key exchange mechanism is not supported by SSLeay at all.
11338 *) Additional PKCS1 checks.
11341 *) Support the string "TLSv1" for all TLS v1 ciphers.
11344 *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
11345 ex_data index of the SSL context in the X509_STORE_CTX ex_data.
11348 *) Fixed a few memory leaks.
11351 *) Fixed various code and comment typos.
11354 *) A minor bug in ssl/s3_clnt.c where there would always be 4 0
11355 bytes sent in the client random.
11356 [Edward Bishop <ebishop@spyglass.com>]
projects / oweals / openssl.git / blob