5 Changes between 1.0.1 and 1.1.0 [xx XXX xxxx]
7 *) Enhance and tidy EC curve and point format TLS extension code. Use
8 static structures instead of allocation if default values are used.
9 New ctrls to set curves we wish to support and to retrieve shared curves.
10 Print out shared curves in s_server. New options to s_server and s_client
11 to set list of supported curves.
14 *) New ctrls to retrieve supported signature algorithms and
15 supported curve values as an array of NIDs. Extend openssl utility
16 to print out received values.
19 *) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert
20 between NIDs and the more common NIST names such as "P-256". Enhance
21 ecparam utility and ECC method to recognise the NIST names for curves.
24 *) Enhance SSL/TLS certificate chain handling to support different
25 chains for each certificate instead of one chain in the parent SSL_CTX.
28 *) Support for fixed DH ciphersuite client authentication: where both
29 server and client use DH certificates with common parameters.
32 *) Support for fixed DH ciphersuites: those requiring DH server
36 *) Transparently support X9.42 DH parameters when calling
37 PEM_read_bio_DHparameters. This means existing applications can handle
38 the new parameter format automatically.
41 *) Initial experimental support for X9.42 DH parameter format: mainly
42 to support use of 'q' parameter for RFC5114 parameters.
45 *) Add DH parameters from RFC5114 including test data to dhtest.
48 *) Update fips_test_suite to support multiple command line options. New
49 test to induce all self test errors in sequence and check expected
53 *) Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and
54 sign or verify all in one operation.
57 *) Add fips_algvs: a multicall fips utility incorporaing all the algorithm
58 test programs and fips_test_suite. Includes functionality to parse
59 the minimal script output of fipsalgest.pl directly.
62 *) Add authorisation parameter to FIPS_module_mode_set().
65 *) Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves.
68 *) Use separate DRBG fields for internal and external flags. New function
69 FIPS_drbg_health_check() to perform on demand health checking. Add
70 generation tests to fips_test_suite with reduced health check interval to
71 demonstrate periodic health checking. Add "nodh" option to
72 fips_test_suite to skip very slow DH test.
75 *) New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers
79 *) More extensive health check for DRBG checking many more failure modes.
80 New function FIPS_selftest_drbg_all() to handle every possible DRBG
81 combination: call this in fips_test_suite.
84 *) Add support for Dual EC DRBG from SP800-90. Update DRBG algorithm test
85 and POST to handle Dual EC cases.
88 *) Add support for canonical generation of DSA parameter 'g'. See
91 *) Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
92 POST to handle HMAC cases.
95 *) Add functions FIPS_module_version() and FIPS_module_version_text()
96 to return numberical and string versions of the FIPS module number.
99 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
100 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implmeneted
101 outside the validated module in the FIPS capable OpenSSL.
104 *) Minor change to DRBG entropy callback semantics. In some cases
105 there is no mutiple of the block length between min_len and
106 max_len. Allow the callback to return more than max_len bytes
107 of entropy but discard any extra: it is the callback's responsibility
108 to ensure that the extra data discarded does not impact the
109 requested amount of entropy.
112 *) Add PRNG security strength checks to RSA, DSA and ECDSA using
113 information in FIPS186-3, SP800-57 and SP800-131A.
116 *) CCM support via EVP. Interface is very similar to GCM case except we
117 must supply all data in one chunk (i.e. no update, final) and the
118 message length must be supplied if AAD is used. Add algorithm test
122 *) Initial version of POST overhaul. Add POST callback to allow the status
123 of POST to be monitored and/or failures induced. Modify fips_test_suite
124 to use callback. Always run all selftests even if one fails.
127 *) XTS support including algorithm test driver in the fips_gcmtest program.
128 Note: this does increase the maximum key length from 32 to 64 bytes but
129 there should be no binary compatibility issues as existing applications
130 will never use XTS mode.
133 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
134 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
135 performs algorithm blocking for unapproved PRNG types. Also do not
136 set PRNG type in FIPS_mode_set(): leave this to the application.
137 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
138 the standard OpenSSL PRNG: set additional data to a date time vector.
141 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
142 This shouldn't present any incompatibility problems because applications
143 shouldn't be using these directly and any that are will need to rethink
144 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
147 *) Extensive self tests and health checking required by SP800-90 DRBG.
148 Remove strength parameter from FIPS_drbg_instantiate and always
149 instantiate at maximum supported strength.
152 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
155 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
158 *) New function DH_compute_key_padded() to compute a DH key and pad with
159 leading zeroes if needed: this complies with SP800-56A et al.
162 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
163 anything, incomplete, subject to change and largely untested at present.
166 *) Modify fipscanisteronly build option to only build the necessary object
167 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
170 *) Add experimental option FIPSSYMS to give all symbols in
171 fipscanister.o and FIPS or fips prefix. This will avoid
172 conflicts with future versions of OpenSSL. Add perl script
173 util/fipsas.pl to preprocess assembly language source files
174 and rename any affected symbols.
177 *) Add selftest checks and algorithm block of non-fips algorithms in
178 FIPS mode. Remove DES2 from selftests.
181 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
182 return internal method without any ENGINE dependencies. Add new
183 tiny fips sign and verify functions.
186 *) New build option no-ec2m to disable characteristic 2 code.
189 *) New build option "fipscanisteronly". This only builds fipscanister.o
190 and (currently) associated fips utilities. Uses the file Makefile.fips
191 instead of Makefile.org as the prototype.
194 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
195 Update fips_gcmtest to use IV generator.
198 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
199 setting output buffer to NULL. The *Final function must be
200 called although it will not retrieve any additional data. The tag
201 can be set or retrieved with a ctrl. The IV length is by default 12
202 bytes (96 bits) but can be set to an alternative value. If the IV
203 length exceeds the maximum IV length (currently 16 bytes) it cannot be
207 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
208 underlying do_cipher function handles all cipher semantics itself
209 including padding and finalisation. This is useful if (for example)
210 an ENGINE cipher handles block padding itself. The behaviour of
211 do_cipher is subtly changed if this flag is set: the return value
212 is the number of characters written to the output buffer (zero is
213 no longer an error code) or a negative error code. Also if the
214 input buffer is NULL and length 0 finalisation should be performed.
217 *) If a candidate issuer certificate is already part of the constructed
218 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
221 *) Improve forward-security support: add functions
223 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
224 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
226 for use by SSL/TLS servers; the callback function will be called whenever a
227 new session is created, and gets to decide whether the session may be
228 cached to make it resumable (return 0) or not (return 1). (As by the
229 SSL/TLS protocol specifications, the session_id sent by the server will be
230 empty to indicate that the session is not resumable; also, the server will
231 not generate RFC 4507 (RFC 5077) session tickets.)
233 A simple reasonable callback implementation is to return is_forward_secure.
234 This parameter will be set to 1 or 0 depending on the ciphersuite selected
235 by the SSL/TLS server library, indicating whether it can provide forward
237 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
239 *) New function OPENSSL_gmtime_diff to find the difference in days
240 and seconds between two tm structures. This will be used to provide
241 additional functionality for ASN1_TIME.
244 *) Add -trusted_first option which attempts to find certificates in the
245 trusted store even if an untrusted chain is also supplied.
248 *) Initial experimental support for explicitly trusted non-root CAs.
249 OpenSSL still tries to build a complete chain to a root but if an
250 intermediate CA has a trust setting included that is used. The first
251 setting is used: whether to trust or reject.
254 *) New -verify_name option in command line utilities to set verification
258 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
259 Add CMAC pkey methods.
262 *) Experimental regnegotiation in s_server -www mode. If the client
263 browses /reneg connection is renegotiated. If /renegcert it is
264 renegotiated requesting a certificate.
267 *) Add an "external" session cache for debugging purposes to s_server. This
268 should help trace issues which normally are only apparent in deployed
269 multi-process servers.
272 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
273 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
274 BIO_set_cipher() and some obscure PEM functions were changed so they
275 can now return an error. The RAND changes required a change to the
276 RAND_METHOD structure.
279 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
280 a gcc attribute to warn if the result of a function is ignored. This
281 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
282 whose return value is often ignored.
285 Changes between 1.0.0f and 1.0.1 [xx XXX xxxx]
287 *) The format used for MDC2 RSA signatures is inconsistent between EVP
288 and the RSA_sign/RSA_verify functions. This was made more apparent when
289 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
290 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
291 the correct format in RSA_verify so both forms transparently work.
294 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET
295 STRING form instead of a DigestInfo.
298 *) Some servers which support TLS 1.0 can choke if we initially indicate
299 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
300 encrypted premaster secret. As a workaround use the maximum pemitted
301 client version in client hello, this should keep such servers happy
302 and still work with previous versions of OpenSSL.
305 *) Add support for TLS/DTLS heartbeats.
306 [Robin Seggelmann <seggelmann@fh-muenster.de>]
308 *) Add support for SCTP.
309 [Robin Seggelmann <seggelmann@fh-muenster.de>]
311 *) Improved PRNG seeding for VOS.
312 [Paul Green <Paul.Green@stratus.com>]
314 *) Extensive assembler packs updates, most notably:
316 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
317 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
318 - x86_64: bit-sliced AES implementation;
319 - ARM: NEON support, contemporary platforms optimizations;
320 - s390x: z196 support;
321 - *: GHASH and GF(2^m) multiplication implementations;
325 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
326 (removal of unnecessary code)
327 [Peter Sylvester <peter.sylvester@edelweb.fr>]
329 *) Add TLS key material exporter from RFC 5705.
332 *) Add DTLS-SRTP negotiation from RFC 5764.
335 *) Add Next Protocol Negotiation,
336 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
337 disabled with a no-npn flag to config or Configure. Code donated
339 [Adam Langley <agl@google.com> and Ben Laurie]
341 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
342 NIST-P256, NIST-P521, with constant-time single point multiplication on
343 typical inputs. Compiler support for the nonstandard type __uint128_t is
344 required to use this (present in gcc 4.4 and later, for 64-bit builds).
345 Code made available under Apache License version 2.0.
347 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
348 line to include this in your build of OpenSSL, and run "make depend" (or
349 "make update"). This enables the following EC_METHODs:
351 EC_GFp_nistp224_method()
352 EC_GFp_nistp256_method()
353 EC_GFp_nistp521_method()
355 EC_GROUP_new_by_curve_name() will automatically use these (while
356 EC_GROUP_new_curve_GFp() currently prefers the more flexible
358 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
360 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
361 all platforms. Move ssize_t definition from e_os.h to the public
362 header file e_os2.h as it now appears in public header file cms.h
365 *) New -sigopt option to the ca, req and x509 utilities. Additional
366 signature parameters can be passed using this option and in
370 *) Add RSA PSS signing function. This will generate and set the
371 appropriate AlgorithmIdentifiers for PSS based on those in the
372 corresponding EVP_MD_CTX structure. No application support yet.
375 *) Support for companion algorithm specific ASN1 signing routines.
376 New function ASN1_item_sign_ctx() signs a pre-initialised
377 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
378 the appropriate parameters.
381 *) Add new algorithm specific ASN1 verification initialisation function
382 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
383 handling will be the same no matter what EVP_PKEY_METHOD is used.
384 Add a PSS handler to support verification of PSS signatures: checked
385 against a number of sample certificates.
388 *) Add signature printing for PSS. Add PSS OIDs.
389 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
391 *) Add algorithm specific signature printing. An individual ASN1 method
392 can now print out signatures instead of the standard hex dump.
394 More complex signatures (e.g. PSS) can print out more meaningful
395 information. Include DSA version that prints out the signature
399 *) Password based recipient info support for CMS library: implementing
403 *) Split password based encryption into PBES2 and PBKDF2 functions. This
404 neatly separates the code into cipher and PBE sections and is required
405 for some algorithms that split PBES2 into separate pieces (such as
409 *) Session-handling fixes:
410 - Fix handling of connections that are resuming with a session ID,
411 but also support Session Tickets.
412 - Fix a bug that suppressed issuing of a new ticket if the client
413 presented a ticket with an expired session.
414 - Try to set the ticket lifetime hint to something reasonable.
415 - Make tickets shorter by excluding irrelevant information.
416 - On the client side, don't ignore renewed tickets.
417 [Adam Langley, Bodo Moeller (Google)]
419 *) Fix PSK session representation.
422 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
424 This work was sponsored by Intel.
427 *) Add GCM support to TLS library. Some custom code is needed to split
428 the IV between the fixed (from PRF) and explicit (from TLS record)
429 portions. This adds all GCM ciphersuites supported by RFC5288 and
430 RFC5289. Generalise some AES* cipherstrings to inlclude GCM and
431 add a special AESGCM string for GCM only.
434 *) Expand range of ctrls for AES GCM. Permit setting invocation
435 field on decrypt and retrieval of invocation field only on encrypt.
438 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
439 As required by RFC5289 these ciphersuites cannot be used if for
440 versions of TLS earlier than 1.2.
443 *) For FIPS capable OpenSSL interpret a NULL default public key method
444 as unset and return the appopriate default but do *not* set the default.
445 This means we can return the appopriate method in applications that
446 swicth between FIPS and non-FIPS modes.
449 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
450 ENGINE is used then we cannot handle that in the FIPS module so we
451 keep original code iff non-FIPS operations are allowed.
454 *) Add -attime option to openssl utilities.
455 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
457 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
460 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
461 FIPS EC methods unconditionally for now.
464 *) New build option no-ec2m to disable characteristic 2 code.
467 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
468 all cases can be covered as some introduce binary incompatibilities.
471 *) Redirect RSA operations to FIPS module including keygen,
472 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
475 *) Add similar low level API blocking to ciphers.
478 *) Low level digest APIs are not approved in FIPS mode: any attempt
479 to use these will cause a fatal error. Applications that *really* want
480 to use them can use the private_* version instead.
483 *) Redirect cipher operations to FIPS module for FIPS builds.
486 *) Redirect digest operations to FIPS module for FIPS builds.
489 *) Update build system to add "fips" flag which will link in fipscanister.o
490 for static and shared library builds embedding a signature if needed.
493 *) Output TLS supported curves in preference order instead of numerical
494 order. This is currently hardcoded for the highest order curves first.
495 This should be configurable so applications can judge speed vs strength.
498 *) Add TLS v1.2 server support for client authentication.
501 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
505 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
506 FIPS modules versions.
509 *) Add TLS v1.2 client side support for client authentication. Keep cache
510 of handshake records longer as we don't know the hash algorithm to use
511 until after the certificate request message is received.
514 *) Initial TLS v1.2 client support. Add a default signature algorithms
515 extension including all the algorithms we support. Parse new signature
516 format in client key exchange. Relax some ECC signing restrictions for
517 TLS v1.2 as indicated in RFC5246.
520 *) Add server support for TLS v1.2 signature algorithms extension. Switch
521 to new signature format when needed using client digest preference.
522 All server ciphersuites should now work correctly in TLS v1.2. No client
523 support yet and no support for client certificates.
526 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
527 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
528 ciphersuites. At present only RSA key exchange ciphersuites work with
529 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
530 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
531 and version checking.
534 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
535 with this defined it will not be affected by any changes to ssl internal
536 structures. Add several utility functions to allow openssl application
537 to work with OPENSSL_NO_SSL_INTERN defined.
541 [Tom Wu <tjw@cs.stanford.edu> and Ben Laurie]
543 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
546 *) Permit abbreviated handshakes when renegotiating using the function
547 SSL_renegotiate_abbreviated().
548 [Robin Seggelmann <seggelmann@fh-muenster.de>]
550 *) Add call to ENGINE_register_all_complete() to
551 ENGINE_load_builtin_engines(), so some implementations get used
552 automatically instead of needing explicit application support.
555 *) Add support for TLS key exporter as described in RFC5705.
556 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
558 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
559 a few changes are required:
561 Add SSL_OP_NO_TLSv1_1 flag.
563 Update version checking logic to handle version 1.1.
564 Add explicit IV handling (ported from DTLS code).
565 Add command line options to s_client/s_server.
568 Changes between 1.0.0g and 1.0.0h [xx XXX xxxx]
570 *) Fix CVE-2011-4619: make sure we really are receiving a
571 client hello before rejecting multiple SGC restarts. Thanks to
572 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
575 Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
577 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
578 Thanks to Antonio Martin, Enterprise Secure Access Research and
579 Development, Cisco Systems, Inc. for discovering this bug and
580 preparing a fix. (CVE-2012-0050)
583 Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
585 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
586 of the Vaudenay padding oracle attack on CBC mode encryption
587 which enables an efficient plaintext recovery attack against
588 the OpenSSL implementation of DTLS. Their attack exploits timing
589 differences arising during decryption processing. A research
590 paper describing this attack can be found at:
591 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
592 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
593 Security Group at Royal Holloway, University of London
594 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
595 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
596 for preparing the fix. (CVE-2011-4108)
597 [Robin Seggelmann, Michael Tuexen]
599 *) Clear bytes used for block padding of SSL 3.0 records.
601 [Adam Langley (Google)]
603 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
604 Kadianakis <desnacked@gmail.com> for discovering this issue and
605 Adam Langley for preparing the fix. (CVE-2011-4619)
606 [Adam Langley (Google)]
608 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
609 [Andrey Kulikov <amdeich@gmail.com>]
611 *) Prevent malformed RFC3779 data triggering an assertion failure.
612 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
613 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
614 [Rob Austein <sra@hactrn.net>]
616 *) Improved PRNG seeding for VOS.
617 [Paul Green <Paul.Green@stratus.com>]
619 *) Fix ssl_ciph.c set-up race.
620 [Adam Langley (Google)]
622 *) Fix spurious failures in ecdsatest.c.
623 [Emilia Käsper (Google)]
625 *) Fix the BIO_f_buffer() implementation (which was mixing different
626 interpretations of the '..._len' fields).
627 [Adam Langley (Google)]
629 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
630 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
631 threads won't reuse the same blinding coefficients.
633 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
634 lock to call BN_BLINDING_invert_ex, and avoids one use of
635 BN_BLINDING_update for each BN_BLINDING structure (previously,
636 the last update always remained unused).
637 [Emilia Käsper (Google)]
639 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
640 [Bob Buckholz (Google)]
642 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
644 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
645 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
646 [Kaspar Brand <ossl@velox.ch>]
648 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
649 for multi-threaded use of ECDH. (CVE-2011-3210)
650 [Adam Langley (Google)]
652 *) Fix x509_name_ex_d2i memory leak on bad inputs.
655 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
656 signature public key algorithm by using OID xref utilities instead.
657 Before this you could only use some ECC ciphersuites with SHA1 only.
660 *) Add protection against ECDSA timing attacks as mentioned in the paper
661 by Billy Bob Brumley and Nicola Tuveri, see:
663 http://eprint.iacr.org/2011/232.pdf
665 [Billy Bob Brumley and Nicola Tuveri]
667 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
669 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
670 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
672 *) Fix bug in string printing code: if *any* escaping is enabled we must
673 escape the escape character (backslash) or the resulting string is
677 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
679 *) Disable code workaround for ancient and obsolete Netscape browsers
680 and servers: an attacker can use it in a ciphersuite downgrade attack.
681 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
684 *) Fixed J-PAKE implementation error, originally discovered by
685 Sebastien Martini, further info and confirmation from Stefan
686 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
689 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
691 *) Fix extension code to avoid race conditions which can result in a buffer
692 overrun vulnerability: resumed sessions must not be modified as they can
693 be shared by multiple threads. CVE-2010-3864
696 *) Fix WIN32 build system to correctly link an ENGINE directory into
700 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
702 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
704 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
706 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
708 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
709 context. The operation can be customised via the ctrl mechanism in
710 case ENGINEs want to include additional functionality.
713 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
716 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
717 output hashes compatible with older versions of OpenSSL.
718 [Willy Weisz <weisz@vcpc.univie.ac.at>]
720 *) Fix compression algorithm handling: if resuming a session use the
721 compression algorithm of the resumed session instead of determining
722 it from client hello again. Don't allow server to change algorithm.
725 *) Add load_crls() function to apps tidying load_certs() too. Add option
726 to verify utility to allow additional CRLs to be included.
729 *) Update OCSP request code to permit adding custom headers to the request:
730 some responders need this.
733 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
735 [Julia Lawall <julia@diku.dk>]
737 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
738 needlessly dereferenced structures, used obsolete functions and
739 didn't handle all updated verify codes correctly.
742 *) Disable MD2 in the default configuration.
745 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
746 indicate the initial BIO being pushed or popped. This makes it possible
747 to determine whether the BIO is the one explicitly called or as a result
748 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
749 it handles reference counts correctly and doesn't zero out the I/O bio
750 when it is not being explicitly popped. WARNING: applications which
751 included workarounds for the old buggy behaviour will need to be modified
752 or they could free up already freed BIOs.
755 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
756 renaming to all platforms (within the 0.9.8 branch, this was
757 done conditionally on Netware platforms to avoid a name clash).
758 [Guenter <lists@gknw.net>]
760 *) Add ECDHE and PSK support to DTLS.
761 [Michael Tuexen <tuexen@fh-muenster.de>]
763 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
767 *) Add "missing" function EVP_MD_flags() (without this the only way to
768 retrieve a digest flags is by accessing the structure directly. Update
769 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
770 or cipher is registered as in the "from" argument. Print out all
771 registered digests in the dgst usage message instead of manually
772 attempting to work them out.
775 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
776 this allows the use of compression and extensions. Change default cipher
777 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
778 by default unless an application cipher string requests it.
781 *) Alter match criteria in PKCS12_parse(). It used to try to use local
782 key ids to find matching certificates and keys but some PKCS#12 files
783 don't follow the (somewhat unwritten) rules and this strategy fails.
784 Now just gather all certificates together and the first private key
785 then look for the first certificate that matches the key.
788 *) Support use of registered digest and cipher names for dgst and cipher
789 commands instead of having to add each one as a special case. So now
796 openssl dgst -sha256 foo
798 and this works for ENGINE based algorithms too.
802 *) Update Gost ENGINE to support parameter files.
803 [Victor B. Wagner <vitus@cryptocom.ru>]
805 *) Support GeneralizedTime in ca utility.
806 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
808 *) Enhance the hash format used for certificate directory links. The new
809 form uses the canonical encoding (meaning equivalent names will work
810 even if they aren't identical) and uses SHA1 instead of MD5. This form
811 is incompatible with the older format and as a result c_rehash should
812 be used to rebuild symbolic links.
815 *) Make PKCS#8 the default write format for private keys, replacing the
816 traditional format. This form is standardised, more secure and doesn't
817 include an implicit MD5 dependency.
820 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
821 committed to OpenSSL should pass this lot as a minimum.
824 *) Add session ticket override functionality for use by EAP-FAST.
825 [Jouni Malinen <j@w1.fi>]
827 *) Modify HMAC functions to return a value. Since these can be implemented
828 in an ENGINE errors can occur.
831 *) Type-checked OBJ_bsearch_ex.
834 *) Type-checked OBJ_bsearch. Also some constification necessitated
835 by type-checking. Still to come: TXT_DB, bsearch(?),
836 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
840 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
841 seconds to a tm structure directly, instead of going through OS
842 specific date routines. This avoids any issues with OS routines such
843 as the year 2038 bug. New *_adj() functions for ASN1 time structures
844 and X509_time_adj_ex() to cover the extended range. The existing
845 X509_time_adj() is still usable and will no longer have any date issues.
848 *) Delta CRL support. New use deltas option which will attempt to locate
849 and search any appropriate delta CRLs available.
851 This work was sponsored by Google.
854 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
855 code and add additional score elements. Validate alternate CRL paths
856 as part of the CRL checking and indicate a new error "CRL path validation
857 error" in this case. Applications wanting additional details can use
858 the verify callback and check the new "parent" field. If this is not
859 NULL CRL path validation is taking place. Existing applications wont
860 see this because it requires extended CRL support which is off by
863 This work was sponsored by Google.
866 *) Support for freshest CRL extension.
868 This work was sponsored by Google.
871 *) Initial indirect CRL support. Currently only supported in the CRLs
872 passed directly and not via lookup. Process certificate issuer
873 CRL entry extension and lookup CRL entries by bother issuer name
874 and serial number. Check and process CRL issuer entry in IDP extension.
876 This work was sponsored by Google.
879 *) Add support for distinct certificate and CRL paths. The CRL issuer
880 certificate is validated separately in this case. Only enabled if
881 an extended CRL support flag is set: this flag will enable additional
882 CRL functionality in future.
884 This work was sponsored by Google.
887 *) Add support for policy mappings extension.
889 This work was sponsored by Google.
892 *) Fixes to pathlength constraint, self issued certificate handling,
893 policy processing to align with RFC3280 and PKITS tests.
895 This work was sponsored by Google.
898 *) Support for name constraints certificate extension. DN, email, DNS
899 and URI types are currently supported.
901 This work was sponsored by Google.
904 *) To cater for systems that provide a pointer-based thread ID rather
905 than numeric, deprecate the current numeric thread ID mechanism and
906 replace it with a structure and associated callback type. This
907 mechanism allows a numeric "hash" to be extracted from a thread ID in
908 either case, and on platforms where pointers are larger than 'long',
909 mixing is done to help ensure the numeric 'hash' is usable even if it
910 can't be guaranteed unique. The default mechanism is to use "&errno"
911 as a pointer-based thread ID to distinguish between threads.
913 Applications that want to provide their own thread IDs should now use
914 CRYPTO_THREADID_set_callback() to register a callback that will call
915 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
917 Note that ERR_remove_state() is now deprecated, because it is tied
918 to the assumption that thread IDs are numeric. ERR_remove_state(0)
919 to free the current thread's error state should be replaced by
920 ERR_remove_thread_state(NULL).
922 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
923 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
924 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
925 application was previously providing a numeric thread callback that
926 was inappropriate for distinguishing threads, then uniqueness might
927 have been obtained with &errno that happened immediately in the
928 intermediate development versions of OpenSSL; this is no longer the
929 case, the numeric thread callback will now override the automatic use
931 [Geoff Thorpe, with help from Bodo Moeller]
933 *) Initial support for different CRL issuing certificates. This covers a
934 simple case where the self issued certificates in the chain exist and
935 the real CRL issuer is higher in the existing chain.
937 This work was sponsored by Google.
940 *) Removed effectively defunct crypto/store from the build.
943 *) Revamp of STACK to provide stronger type-checking. Still to come:
944 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
945 ASN1_STRING, CONF_VALUE.
948 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
949 RAM on SSL connections. This option can save about 34k per idle SSL.
952 *) Revamp of LHASH to provide stronger type-checking. Still to come:
953 STACK, TXT_DB, bsearch, qsort.
956 *) Initial support for Cryptographic Message Syntax (aka CMS) based
957 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
958 support for data, signedData, compressedData, digestedData and
959 encryptedData, envelopedData types included. Scripts to check against
960 RFC4134 examples draft and interop and consistency checks of many
961 content types and variants.
964 *) Add options to enc utility to support use of zlib compression BIO.
967 *) Extend mk1mf to support importing of options and assembly language
968 files from Configure script, currently only included in VC-WIN32.
969 The assembly language rules can now optionally generate the source
970 files from the associated perl scripts.
973 *) Implement remaining functionality needed to support GOST ciphersuites.
974 Interop testing has been performed using CryptoPro implementations.
975 [Victor B. Wagner <vitus@cryptocom.ru>]
977 *) s390x assembler pack.
980 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
984 *) Implement Opaque PRF Input TLS extension as specified in
985 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
986 official specification yet and no extension type assignment by
987 IANA exists, this extension (for now) will have to be explicitly
988 enabled when building OpenSSL by providing the extension number
989 to use. For example, specify an option
991 -DTLSEXT_TYPE_opaque_prf_input=0x9527
993 to the "config" or "Configure" script to enable the extension,
994 assuming extension number 0x9527 (which is a completely arbitrary
995 and unofficial assignment based on the MD5 hash of the Internet
996 Draft). Note that by doing so, you potentially lose
997 interoperability with other TLS implementations since these might
998 be using the same extension number for other purposes.
1000 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
1001 opaque PRF input value to use in the handshake. This will create
1002 an interal copy of the length-'len' string at 'src', and will
1003 return non-zero for success.
1005 To get more control and flexibility, provide a callback function
1008 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
1009 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
1013 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
1016 Callback function 'cb' will be called in handshakes, and is
1017 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
1018 Argument 'arg' is for application purposes (the value as given to
1019 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
1020 be provided to the callback function). The callback function
1021 has to return non-zero to report success: usually 1 to use opaque
1022 PRF input just if possible, or 2 to enforce use of the opaque PRF
1023 input. In the latter case, the library will abort the handshake
1024 if opaque PRF input is not successfully negotiated.
1026 Arguments 'peerinput' and 'len' given to the callback function
1027 will always be NULL and 0 in the case of a client. A server will
1028 see the client's opaque PRF input through these variables if
1029 available (NULL and 0 otherwise). Note that if the server
1030 provides an opaque PRF input, the length must be the same as the
1031 length of the client's opaque PRF input.
1033 Note that the callback function will only be called when creating
1034 a new session (session resumption can resume whatever was
1035 previously negotiated), and will not be called in SSL 2.0
1036 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
1037 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
1038 for applications that need to enforce opaque PRF input.
1042 *) Update ssl code to support digests other than SHA1+MD5 for handshake
1045 [Victor B. Wagner <vitus@cryptocom.ru>]
1047 *) Add RFC4507 support to OpenSSL. This includes the corrections in
1048 RFC4507bis. The encrypted ticket format is an encrypted encoded
1049 SSL_SESSION structure, that way new session features are automatically
1052 If a client application caches session in an SSL_SESSION structure
1053 support is transparent because tickets are now stored in the encoded
1056 The SSL_CTX structure automatically generates keys for ticket
1057 protection in servers so again support should be possible
1058 with no application modification.
1060 If a client or server wishes to disable RFC4507 support then the option
1061 SSL_OP_NO_TICKET can be set.
1063 Add a TLS extension debugging callback to allow the contents of any client
1064 or server extensions to be examined.
1066 This work was sponsored by Google.
1069 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
1070 OpenSSL should now compile cleanly on gcc 4.2
1071 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
1073 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
1074 support including streaming MAC support: this is required for GOST
1075 ciphersuite support.
1076 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
1078 *) Add option -stream to use PKCS#7 streaming in smime utility. New
1079 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
1080 to output in BER and PEM format.
1083 *) Experimental support for use of HMAC via EVP_PKEY interface. This
1084 allows HMAC to be handled via the EVP_DigestSign*() interface. The
1085 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
1086 ENGINE support for HMAC keys which are unextractable. New -mac and
1087 -macopt options to dgst utility.
1090 *) New option -sigopt to dgst utility. Update dgst to use
1091 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
1092 alternative signing paramaters such as X9.31 or PSS in the dgst
1096 *) Change ssl_cipher_apply_rule(), the internal function that does
1097 the work each time a ciphersuite string requests enabling
1098 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
1099 removing ("!foo+bar") a class of ciphersuites: Now it maintains
1100 the order of disabled ciphersuites such that those ciphersuites
1101 that most recently went from enabled to disabled not only stay
1102 in order with respect to each other, but also have higher priority
1103 than other disabled ciphersuites the next time ciphersuites are
1106 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
1107 the same ciphersuites as with "HIGH" alone, but in a specific
1108 order where the PSK ciphersuites come first (since they are the
1109 most recently disabled ciphersuites when "HIGH" is parsed).
1111 Also, change ssl_create_cipher_list() (using this new
1112 funcionality) such that between otherwise identical
1113 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
1117 *) Change ssl_create_cipher_list() so that it automatically
1118 arranges the ciphersuites in reasonable order before starting
1119 to process the rule string. Thus, the definition for "DEFAULT"
1120 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
1121 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
1122 This makes it much easier to arrive at a reasonable default order
1123 in applications for which anonymous ciphers are OK (meaning
1124 that you can't actually use DEFAULT).
1125 [Bodo Moeller; suggested by Victor Duchovni]
1127 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
1128 processing) into multiple integers instead of setting
1129 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
1130 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
1131 (These masks as well as the individual bit definitions are hidden
1132 away into the non-exported interface ssl/ssl_locl.h, so this
1133 change to the definition of the SSL_CIPHER structure shouldn't
1134 affect applications.) This give us more bits for each of these
1135 categories, so there is no longer a need to coagulate AES128 and
1136 AES256 into a single algorithm bit, and to coagulate Camellia128
1137 and Camellia256 into a single algorithm bit, which has led to all
1140 Thus, among other things, the kludge introduced in 0.9.7m and
1141 0.9.8e for masking out AES256 independently of AES128 or masking
1142 out Camellia256 independently of AES256 is not needed here in 0.9.9.
1144 With the change, we also introduce new ciphersuite aliases that
1145 so far were missing: "AES128", "AES256", "CAMELLIA128", and
1149 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
1150 Use the leftmost N bytes of the signature input if the input is
1151 larger than the prime q (with N being the size in bytes of q).
1154 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
1155 it yet and it is largely untested.
1158 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
1161 *) Initial incomplete changes to avoid need for function casts in OpenSSL
1162 some compilers (gcc 4.2 and later) reject their use. Safestack is
1163 reimplemented. Update ASN1 to avoid use of legacy functions.
1166 *) Win32/64 targets are linked with Winsock2.
1169 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
1170 to external functions. This can be used to increase CRL handling
1171 efficiency especially when CRLs are very large by (for example) storing
1172 the CRL revoked certificates in a database.
1175 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
1176 new CRLs added to a directory can be used. New command line option
1177 -verify_return_error to s_client and s_server. This causes real errors
1178 to be returned by the verify callback instead of carrying on no matter
1179 what. This reflects the way a "real world" verify callback would behave.
1182 *) GOST engine, supporting several GOST algorithms and public key formats.
1183 Kindly donated by Cryptocom.
1186 *) Partial support for Issuing Distribution Point CRL extension. CRLs
1187 partitioned by DP are handled but no indirect CRL or reason partitioning
1188 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
1189 selected via a scoring technique which handles IDP and AKID in CRLs.
1192 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
1193 will ultimately be used for all verify operations: this will remove the
1194 X509_STORE dependency on certificate verification and allow alternative
1195 lookup methods. X509_STORE based implementations of these two callbacks.
1198 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
1199 Modify get_crl() to find a valid (unexpired) CRL if possible.
1202 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
1203 this would be called X509_CRL_cmp() but that name is already used by
1204 a function that just compares CRL issuer names. Cache several CRL
1205 extensions in X509_CRL structure and cache CRLDP in X509.
1208 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
1209 this maps equivalent X509_NAME structures into a consistent structure.
1210 Name comparison can then be performed rapidly using memcmp().
1213 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
1217 *) Allow digests to supply their own micalg string for S/MIME type using
1218 the ctrl EVP_MD_CTRL_MICALG.
1221 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
1222 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
1223 ctrl. It can then customise the structure before and/or after signing
1227 *) New function OBJ_add_sigid() to allow application defined signature OIDs
1228 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
1229 to free up any added signature OIDs.
1232 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
1233 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
1234 digest and cipher tables. New options added to openssl utility:
1235 list-message-digest-algorithms and list-cipher-algorithms.
1238 *) Change the array representation of binary polynomials: the list
1239 of degrees of non-zero coefficients is now terminated with -1.
1240 Previously it was terminated with 0, which was also part of the
1241 value; thus, the array representation was not applicable to
1242 polynomials where t^0 has coefficient zero. This change makes
1243 the array representation useful in a more general context.
1246 *) Various modifications and fixes to SSL/TLS cipher string
1247 handling. For ECC, the code now distinguishes between fixed ECDH
1248 with RSA certificates on the one hand and with ECDSA certificates
1249 on the other hand, since these are separate ciphersuites. The
1250 unused code for Fortezza ciphersuites has been removed.
1252 For consistency with EDH, ephemeral ECDH is now called "EECDH"
1253 (not "ECDHE"). For consistency with the code for DH
1254 certificates, use of ECDH certificates is now considered ECDH
1255 authentication, not RSA or ECDSA authentication (the latter is
1256 merely the CA's signing algorithm and not actively used in the
1259 The temporary ciphersuite alias "ECCdraft" is no longer
1260 available, and ECC ciphersuites are no longer excluded from "ALL"
1261 and "DEFAULT". The following aliases now exist for RFC 4492
1262 ciphersuites, most of these by analogy with the DH case:
1264 kECDHr - ECDH cert, signed with RSA
1265 kECDHe - ECDH cert, signed with ECDSA
1266 kECDH - ECDH cert (signed with either RSA or ECDSA)
1267 kEECDH - ephemeral ECDH
1268 ECDH - ECDH cert or ephemeral ECDH
1274 AECDH - anonymous ECDH
1275 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
1279 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
1280 Use correct micalg parameters depending on digest(s) in signed message.
1283 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
1284 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
1287 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
1288 an engine to register a method. Add ENGINE lookups for methods and
1289 functional reference processing.
1292 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
1293 EVP_{Sign,Verify}* which allow an application to customise the signature
1297 *) New -resign option to smime utility. This adds one or more signers
1298 to an existing PKCS#7 signedData structure. Also -md option to use an
1299 alternative message digest algorithm for signing.
1302 *) Tidy up PKCS#7 routines and add new functions to make it easier to
1303 create PKCS7 structures containing multiple signers. Update smime
1304 application to support multiple signers.
1307 *) New -macalg option to pkcs12 utility to allow setting of an alternative
1311 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
1312 Reorganize PBE internals to lookup from a static table using NIDs,
1313 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
1314 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
1315 PRF which will be automatically used with PBES2.
1318 *) Replace the algorithm specific calls to generate keys in "req" with the
1322 *) Update PKCS#7 enveloped data routines to use new API. This is now
1323 supported by any public key method supporting the encrypt operation. A
1324 ctrl is added to allow the public key algorithm to examine or modify
1325 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
1329 *) Add a ctrl to asn1 method to allow a public key algorithm to express
1330 a default digest type to use. In most cases this will be SHA1 but some
1331 algorithms (such as GOST) need to specify an alternative digest. The
1332 return value indicates how strong the prefernce is 1 means optional and
1333 2 is mandatory (that is it is the only supported type). Modify
1334 ASN1_item_sign() to accept a NULL digest argument to indicate it should
1335 use the default md. Update openssl utilities to use the default digest
1336 type for signing if it is not explicitly indicated.
1339 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
1340 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
1341 signing method from the key type. This effectively removes the link
1342 between digests and public key types.
1345 *) Add an OID cross reference table and utility functions. Its purpose is to
1346 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
1347 rsaEncryption. This will allow some of the algorithm specific hackery
1348 needed to use the correct OID to be removed.
1351 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
1352 structures for PKCS7_sign(). They are now set up by the relevant public
1356 *) Add provisional EC pkey method with support for ECDSA and ECDH.
1359 *) Add support for key derivation (agreement) in the API, DH method and
1363 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
1364 public and private key formats. As a side effect these add additional
1365 command line functionality not previously available: DSA signatures can be
1366 generated and verified using pkeyutl and DH key support and generation in
1371 [Oliver Tappe <zooey@hirschkaefer.de>]
1373 *) New make target "install_html_docs" installs HTML renditions of the
1375 [Oliver Tappe <zooey@hirschkaefer.de>]
1377 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
1378 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
1379 support key and parameter generation and add initial key generation
1380 functionality for RSA.
1383 *) Add functions for main EVP_PKEY_method operations. The undocumented
1384 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
1385 EVP_PKEY_{encrypt,decrypt}_old.
1388 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
1389 key API, doesn't do much yet.
1392 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
1393 public key algorithms. New option to openssl utility:
1394 "list-public-key-algorithms" to print out info.
1397 *) Implement the Supported Elliptic Curves Extension for
1398 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1401 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
1402 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
1405 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
1406 utilities such as rsa, dsa, dsaparam etc except they process any key
1410 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
1411 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
1412 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
1416 *) Initial support for pluggable public key ASN1.
1417 De-spaghettify the public key ASN1 handling. Move public and private
1418 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
1419 algorithm specific handling to a single module within the relevant
1420 algorithm directory. Add functions to allow (near) opaque processing
1421 of public and private key structures.
1424 *) Implement the Supported Point Formats Extension for
1425 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1428 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
1429 for the psk identity [hint] and the psk callback functions to the
1430 SSL_SESSION, SSL and SSL_CTX structure.
1433 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
1437 SSL_CTX_use_psk_identity_hint
1438 SSL_get_psk_identity_hint
1439 SSL_get_psk_identity
1440 SSL_use_psk_identity_hint
1442 [Mika Kousa and Pasi Eronen of Nokia Corporation]
1444 *) Add RFC 3161 compliant time stamp request creation, response generation
1445 and response verification functionality.
1446 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
1448 *) Add initial support for TLS extensions, specifically for the server_name
1449 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1450 have new members for a host name. The SSL data structure has an
1451 additional member SSL_CTX *initial_ctx so that new sessions can be
1452 stored in that context to allow for session resumption, even after the
1453 SSL has been switched to a new SSL_CTX in reaction to a client's
1454 server_name extension.
1456 New functions (subject to change):
1458 SSL_get_servername()
1459 SSL_get_servername_type()
1462 New CTRL codes and macros (subject to change):
1464 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1465 - SSL_CTX_set_tlsext_servername_callback()
1466 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1467 - SSL_CTX_set_tlsext_servername_arg()
1468 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1470 openssl s_client has a new '-servername ...' option.
1472 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1473 '-key2 ...', '-servername_fatal' (subject to change). This allows
1474 testing the HostName extension for a specific single host name ('-cert'
1475 and '-key' remain fallbacks for handshakes without HostName
1476 negotiation). If the unrecogninzed_name alert has to be sent, this by
1477 default is a warning; it becomes fatal with the '-servername_fatal'
1480 [Peter Sylvester, Remy Allais, Christophe Renou]
1482 *) Whirlpool hash implementation is added.
1485 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
1486 bn(64,32). Because of instruction set limitations it doesn't have
1487 any negative impact on performance. This was done mostly in order
1488 to make it possible to share assembler modules, such as bn_mul_mont
1489 implementations, between 32- and 64-bit builds without hassle.
1492 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
1493 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
1497 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
1498 dedicated Montgomery multiplication procedure, is introduced.
1499 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
1500 "64-bit" performance on certain 32-bit targets.
1503 *) New option SSL_OP_NO_COMP to disable use of compression selectively
1504 in SSL structures. New SSL ctrl to set maximum send fragment size.
1505 Save memory by seeting the I/O buffer sizes dynamically instead of
1506 using the maximum available value.
1509 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
1510 in addition to the text details.
1513 *) Very, very preliminary EXPERIMENTAL support for printing of general
1514 ASN1 structures. This currently produces rather ugly output and doesn't
1515 handle several customised structures at all.
1518 *) Integrated support for PVK file format and some related formats such
1519 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
1520 these in the 'rsa' and 'dsa' utilities.
1523 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
1526 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
1527 place for the (very old) "NETSCAPE" format certificates which are now
1528 handled using new ASN1 code equivalents.
1531 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
1532 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
1533 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
1536 *) Modify CRL distribution points extension code to print out previously
1537 unsupported fields. Enhance extension setting code to allow setting of
1541 *) Add print and set support for Issuing Distribution Point CRL extension.
1544 *) Change 'Configure' script to enable Camellia by default.
1547 Changes between 0.9.8s and 0.9.8t [18 Jan 2012]
1549 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
1550 Thanks to Antonio Martin, Enterprise Secure Access Research and
1551 Development, Cisco Systems, Inc. for discovering this bug and
1552 preparing a fix. (CVE-2012-0050)
1555 Changes between 0.9.8r and 0.9.8s [4 Jan 2012]
1557 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
1558 of the Vaudenay padding oracle attack on CBC mode encryption
1559 which enables an efficient plaintext recovery attack against
1560 the OpenSSL implementation of DTLS. Their attack exploits timing
1561 differences arising during decryption processing. A research
1562 paper describing this attack can be found at:
1563 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
1564 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
1565 Security Group at Royal Holloway, University of London
1566 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
1567 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
1568 for preparing the fix. (CVE-2011-4108)
1569 [Robin Seggelmann, Michael Tuexen]
1571 *) Stop policy check failure freeing same buffer twice. (CVE-2011-4109)
1572 [Ben Laurie, Kasper <ekasper@google.com>]
1574 *) Clear bytes used for block padding of SSL 3.0 records.
1576 [Adam Langley (Google)]
1578 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
1579 Kadianakis <desnacked@gmail.com> for discovering this issue and
1580 Adam Langley for preparing the fix. (CVE-2011-4619)
1581 [Adam Langley (Google)]
1583 *) Prevent malformed RFC3779 data triggering an assertion failure.
1584 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
1585 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
1586 [Rob Austein <sra@hactrn.net>]
1588 *) Fix ssl_ciph.c set-up race.
1589 [Adam Langley (Google)]
1591 *) Fix spurious failures in ecdsatest.c.
1592 [Emilia Käsper (Google)]
1594 *) Fix the BIO_f_buffer() implementation (which was mixing different
1595 interpretations of the '..._len' fields).
1596 [Adam Langley (Google)]
1598 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
1599 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
1600 threads won't reuse the same blinding coefficients.
1602 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
1603 lock to call BN_BLINDING_invert_ex, and avoids one use of
1604 BN_BLINDING_update for each BN_BLINDING structure (previously,
1605 the last update always remained unused).
1606 [Emilia Käsper (Google)]
1608 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
1609 for multi-threaded use of ECDH.
1610 [Adam Langley (Google)]
1612 *) Fix x509_name_ex_d2i memory leak on bad inputs.
1615 *) Add protection against ECDSA timing attacks as mentioned in the paper
1616 by Billy Bob Brumley and Nicola Tuveri, see:
1618 http://eprint.iacr.org/2011/232.pdf
1620 [Billy Bob Brumley and Nicola Tuveri]
1622 Changes between 0.9.8q and 0.9.8r [8 Feb 2011]
1624 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
1625 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
1627 *) Fix bug in string printing code: if *any* escaping is enabled we must
1628 escape the escape character (backslash) or the resulting string is
1632 Changes between 0.9.8p and 0.9.8q [2 Dec 2010]
1634 *) Disable code workaround for ancient and obsolete Netscape browsers
1635 and servers: an attacker can use it in a ciphersuite downgrade attack.
1636 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
1639 *) Fixed J-PAKE implementation error, originally discovered by
1640 Sebastien Martini, further info and confirmation from Stefan
1641 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
1644 Changes between 0.9.8o and 0.9.8p [16 Nov 2010]
1646 *) Fix extension code to avoid race conditions which can result in a buffer
1647 overrun vulnerability: resumed sessions must not be modified as they can
1648 be shared by multiple threads. CVE-2010-3864
1651 *) Fix for double free bug in ssl/s3_clnt.c CVE-2010-2939
1654 *) Don't reencode certificate when calculating signature: cache and use
1655 the original encoding instead. This makes signature verification of
1656 some broken encodings work correctly.
1659 *) ec2_GF2m_simple_mul bugfix: compute correct result if the output EC_POINT
1660 is also one of the inputs.
1661 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
1663 *) Don't repeatedly append PBE algorithms to table if they already exist.
1664 Sort table on each new add. This effectively makes the table read only
1665 after all algorithms are added and subsequent calls to PKCS12_pbe_add
1669 Changes between 0.9.8n and 0.9.8o [01 Jun 2010]
1671 [NB: OpenSSL 0.9.8o and later 0.9.8 patch levels were released after
1674 *) Correct a typo in the CMS ASN1 module which can result in invalid memory
1675 access or freeing data twice (CVE-2010-0742)
1676 [Steve Henson, Ronald Moesbergen <intercommit@gmail.com>]
1678 *) Add SHA2 algorithms to SSL_library_init(). SHA2 is becoming far more
1679 common in certificates and some applications which only call
1680 SSL_library_init and not OpenSSL_add_all_algorithms() will fail.
1684 Reduce copying into .apps and .test in makevms.com
1685 Don't try to use blank CA certificate in CA.com
1686 Allow use of C files from original directories in maketests.com
1687 [Steven M. Schweda" <sms@antinode.info>]
1689 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
1691 *) When rejecting SSL/TLS records due to an incorrect version number, never
1692 update s->server with a new major version number. As of
1693 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
1694 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
1695 the previous behavior could result in a read attempt at NULL when
1696 receiving specific incorrect SSL/TLS records once record payload
1697 protection is active. (CVE-2010-0740)
1698 [Bodo Moeller, Adam Langley <agl@chromium.org>]
1700 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
1701 could be crashed if the relevant tables were not present (e.g. chrooted).
1702 [Tomas Hoger <thoger@redhat.com>]
1704 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
1706 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
1707 [Martin Olsson, Neel Mehta]
1709 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
1710 accommodate for stack sorting, always a write lock!).
1713 *) On some versions of WIN32 Heap32Next is very slow. This can cause
1714 excessive delays in the RAND_poll(): over a minute. As a workaround
1715 include a time check in the inner Heap32Next loop too.
1718 *) The code that handled flushing of data in SSL/TLS originally used the
1719 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
1720 the problem outlined in PR#1949. The fix suggested there however can
1721 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
1722 of Apache). So instead simplify the code to flush unconditionally.
1723 This should be fine since flushing with no data to flush is a no op.
1726 *) Handle TLS versions 2.0 and later properly and correctly use the
1727 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
1728 off ancient servers have a habit of sticking around for a while...
1731 *) Modify compression code so it frees up structures without using the
1732 ex_data callbacks. This works around a problem where some applications
1733 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
1734 restarting) then use compression (e.g. SSL with compression) later.
1735 This results in significant per-connection memory leaks and
1736 has caused some security issues including CVE-2008-1678 and
1740 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
1741 change when encrypting or decrypting.
1744 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
1745 connect and renegotiate with servers which do not support RI.
1746 Until RI is more widely deployed this option is enabled by default.
1749 *) Add "missing" ssl ctrls to clear options and mode.
1752 *) If client attempts to renegotiate and doesn't support RI respond with
1753 a no_renegotiation alert as required by RFC5746. Some renegotiating
1754 TLS clients will continue a connection gracefully when they receive
1755 the alert. Unfortunately OpenSSL mishandled this alert and would hang
1756 waiting for a server hello which it will never receive. Now we treat a
1757 received no_renegotiation alert as a fatal error. This is because
1758 applications requesting a renegotiation might well expect it to succeed
1759 and would have no code in place to handle the server denying it so the
1760 only safe thing to do is to terminate the connection.
1763 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
1764 peer supports secure renegotiation and 0 otherwise. Print out peer
1765 renegotiation support in s_client/s_server.
1768 *) Replace the highly broken and deprecated SPKAC certification method with
1769 the updated NID creation version. This should correctly handle UTF8.
1772 *) Implement RFC5746. Re-enable renegotiation but require the extension
1773 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
1774 turns out to be a bad idea. It has been replaced by
1775 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
1776 SSL_CTX_set_options(). This is really not recommended unless you
1777 know what you are doing.
1778 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
1780 *) Fixes to stateless session resumption handling. Use initial_ctx when
1781 issuing and attempting to decrypt tickets in case it has changed during
1782 servername handling. Use a non-zero length session ID when attempting
1783 stateless session resumption: this makes it possible to determine if
1784 a resumption has occurred immediately after receiving server hello
1785 (several places in OpenSSL subtly assume this) instead of later in
1789 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
1790 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
1791 fixes for a few places where the return code is not checked
1793 [Julia Lawall <julia@diku.dk>]
1795 *) Add --strict-warnings option to Configure script to include devteam
1796 warnings in other configurations.
1799 *) Add support for --libdir option and LIBDIR variable in makefiles. This
1800 makes it possible to install openssl libraries in locations which
1801 have names other than "lib", for example "/usr/lib64" which some
1803 [Steve Henson, based on patch from Jeremy Utley]
1805 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
1806 X690 8.9.12 and can produce some misleading textual output of OIDs.
1807 [Steve Henson, reported by Dan Kaminsky]
1809 *) Delete MD2 from algorithm tables. This follows the recommendation in
1810 several standards that it is not used in new applications due to
1811 several cryptographic weaknesses. For binary compatibility reasons
1812 the MD2 API is still compiled in by default.
1815 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
1819 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
1820 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
1822 [Guenter <lists@gknw.net>]
1824 *) Fix the server certificate chain building code to use X509_verify_cert(),
1825 it used to have an ad-hoc builder which was unable to cope with anything
1826 other than a simple chain.
1827 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
1829 *) Don't check self signed certificate signatures in X509_verify_cert()
1830 by default (a flag can override this): it just wastes time without
1831 adding any security. As a useful side effect self signed root CAs
1832 with non-FIPS digests are now usable in FIPS mode.
1835 *) In dtls1_process_out_of_seq_message() the check if the current message
1836 is already buffered was missing. For every new message was memory
1837 allocated, allowing an attacker to perform an denial of service attack
1838 with sending out of seq handshake messages until there is no memory
1839 left. Additionally every future messege was buffered, even if the
1840 sequence number made no sense and would be part of another handshake.
1841 So only messages with sequence numbers less than 10 in advance will be
1842 buffered. (CVE-2009-1378)
1843 [Robin Seggelmann, discovered by Daniel Mentz]
1845 *) Records are buffered if they arrive with a future epoch to be
1846 processed after finishing the corresponding handshake. There is
1847 currently no limitation to this buffer allowing an attacker to perform
1848 a DOS attack with sending records with future epochs until there is no
1849 memory left. This patch adds the pqueue_size() function to detemine
1850 the size of a buffer and limits the record buffer to 100 entries.
1852 [Robin Seggelmann, discovered by Daniel Mentz]
1854 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
1855 parent structure is freed. (CVE-2009-1379)
1858 *) Handle non-blocking I/O properly in SSL_shutdown() call.
1859 [Darryl Miles <darryl-mailinglists@netbauds.net>]
1862 [Ilya O. <vrghost@gmail.com>]
1864 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
1866 *) Disable renegotiation completely - this fixes a severe security
1867 problem (CVE-2009-3555) at the cost of breaking all
1868 renegotiation. Renegotiation can be re-enabled by setting
1869 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
1870 run-time. This is really not recommended unless you know what
1874 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
1876 *) Don't set val to NULL when freeing up structures, it is freed up by
1877 underlying code. If sizeof(void *) > sizeof(long) this can result in
1878 zeroing past the valid field. (CVE-2009-0789)
1879 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
1881 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
1882 checked correctly. This would allow some invalid signed attributes to
1883 appear to verify correctly. (CVE-2009-0591)
1884 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1886 *) Reject UniversalString and BMPString types with invalid lengths. This
1887 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
1888 a legal length. (CVE-2009-0590)
1891 *) Set S/MIME signing as the default purpose rather than setting it
1892 unconditionally. This allows applications to override it at the store
1896 *) Permit restricted recursion of ASN1 strings. This is needed in practice
1897 to handle some structures.
1900 *) Improve efficiency of mem_gets: don't search whole buffer each time
1902 [Jeremy Shapiro <jnshapir@us.ibm.com>]
1904 *) New -hex option for openssl rand.
1907 *) Print out UTF8String and NumericString when parsing ASN1.
1910 *) Support NumericString type for name components.
1913 *) Allow CC in the environment to override the automatically chosen
1914 compiler. Note that nothing is done to ensure flags work with the
1918 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
1920 *) Properly check EVP_VerifyFinal() and similar return values
1922 [Ben Laurie, Bodo Moeller, Google Security Team]
1924 *) Enable TLS extensions by default.
1927 *) Allow the CHIL engine to be loaded, whether the application is
1928 multithreaded or not. (This does not release the developer from the
1929 obligation to set up the dynamic locking callbacks.)
1930 [Sander Temme <sander@temme.net>]
1932 *) Use correct exit code if there is an error in dgst command.
1933 [Steve Henson; problem pointed out by Roland Dirlewanger]
1935 *) Tweak Configure so that you need to say "experimental-jpake" to enable
1936 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
1939 *) Add experimental JPAKE support, including demo authentication in
1940 s_client and s_server.
1943 *) Set the comparison function in v3_addr_canonize().
1944 [Rob Austein <sra@hactrn.net>]
1946 *) Add support for XMPP STARTTLS in s_client.
1947 [Philip Paeps <philip@freebsd.org>]
1949 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
1950 to ensure that even with this option, only ciphersuites in the
1951 server's preference list will be accepted. (Note that the option
1952 applies only when resuming a session, so the earlier behavior was
1953 just about the algorithm choice for symmetric cryptography.)
1956 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
1958 *) Fix NULL pointer dereference if a DTLS server received
1959 ChangeCipherSpec as first record (CVE-2009-1386).
1962 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
1963 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
1966 *) The fix in 0.9.8c that supposedly got rid of unsafe
1967 double-checked locking was incomplete for RSA blinding,
1968 addressing just one layer of what turns out to have been
1969 doubly unsafe triple-checked locking.
1971 So now fix this for real by retiring the MONT_HELPER macro
1972 in crypto/rsa/rsa_eay.c.
1974 [Bodo Moeller; problem pointed out by Marius Schilder]
1976 *) Various precautionary measures:
1978 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
1980 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
1981 (NB: This would require knowledge of the secret session ticket key
1982 to exploit, in which case you'd be SOL either way.)
1984 - Change bn_nist.c so that it will properly handle input BIGNUMs
1985 outside the expected range.
1987 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
1990 [Neel Mehta, Bodo Moeller]
1992 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
1993 the load fails. Useful for distros.
1994 [Ben Laurie and the FreeBSD team]
1996 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
1999 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
2002 *) Expand ENGINE to support engine supplied SSL client certificate functions.
2004 This work was sponsored by Logica.
2007 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
2008 keystores. Support for SSL/TLS client authentication too.
2009 Not compiled unless enable-capieng specified to Configure.
2011 This work was sponsored by Logica.
2014 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
2015 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
2016 attribute creation routines such as certifcate requests and PKCS#12
2020 Changes between 0.9.8g and 0.9.8h [28 May 2008]
2022 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
2023 handshake which could lead to a cilent crash as found using the
2024 Codenomicon TLS test suite (CVE-2008-1672)
2025 [Steve Henson, Mark Cox]
2027 *) Fix double free in TLS server name extensions which could lead to
2028 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
2031 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
2033 Clear the error queue to ensure that error entries left from
2034 older function calls do not interfere with the correct operation.
2035 [Lutz Jaenicke, Erik de Castro Lopo]
2037 *) Remove root CA certificates of commercial CAs:
2039 The OpenSSL project does not recommend any specific CA and does not
2040 have any policy with respect to including or excluding any CA.
2041 Therefore it does not make any sense to ship an arbitrary selection
2042 of root CA certificates with the OpenSSL software.
2045 *) RSA OAEP patches to fix two separate invalid memory reads.
2046 The first one involves inputs when 'lzero' is greater than
2047 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
2048 before the beginning of from). The second one involves inputs where
2049 the 'db' section contains nothing but zeroes (there is a one-byte
2050 invalid read after the end of 'db').
2051 [Ivan Nestlerode <inestlerode@us.ibm.com>]
2053 *) Partial backport from 0.9.9-dev:
2055 Introduce bn_mul_mont (dedicated Montgomery multiplication
2056 procedure) as a candidate for BIGNUM assembler implementation.
2057 While 0.9.9-dev uses assembler for various architectures, only
2058 x86_64 is available by default here in the 0.9.8 branch, and
2059 32-bit x86 is available through a compile-time setting.
2061 To try the 32-bit x86 assembler implementation, use Configure
2062 option "enable-montasm" (which exists only for this backport).
2064 As "enable-montasm" for 32-bit x86 disclaims code stability
2065 anyway, in this constellation we activate additional code
2066 backported from 0.9.9-dev for further performance improvements,
2067 namely BN_from_montgomery_word. (To enable this otherwise,
2068 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
2070 [Andy Polyakov (backport partially by Bodo Moeller)]
2072 *) Add TLS session ticket callback. This allows an application to set
2073 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
2074 values. This is useful for key rollover for example where several key
2075 sets may exist with different names.
2078 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
2079 This was broken until now in 0.9.8 releases, such that the only way
2080 a registered ENGINE could be used (assuming it initialises
2081 successfully on the host) was to explicitly set it as the default
2082 for the relevant algorithms. This is in contradiction with 0.9.7
2083 behaviour and the documentation. With this fix, when an ENGINE is
2084 registered into a given algorithm's table of implementations, the
2085 'uptodate' flag is reset so that auto-discovery will be used next
2086 time a new context for that algorithm attempts to select an
2088 [Ian Lister (tweaked by Geoff Thorpe)]
2090 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
2091 implemention in the following ways:
2093 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
2096 Lack of BER streaming support means one pass streaming processing is
2097 only supported if data is detached: setting the streaming flag is
2098 ignored for embedded content.
2100 CMS support is disabled by default and must be explicitly enabled
2101 with the enable-cms configuration option.
2104 *) Update the GMP engine glue to do direct copies between BIGNUM and
2105 mpz_t when openssl and GMP use the same limb size. Otherwise the
2106 existing "conversion via a text string export" trick is still used.
2107 [Paul Sheer <paulsheer@gmail.com>]
2109 *) Zlib compression BIO. This is a filter BIO which compressed and
2110 uncompresses any data passed through it.
2113 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
2114 RFC3394 compatible AES key wrapping.
2117 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
2118 sets string data without copying. X509_ALGOR_set0() and
2119 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
2120 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
2121 from an X509_ATTRIBUTE structure optionally checking it occurs only
2122 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
2126 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
2127 to get the expected BN_FLG_CONSTTIME behavior.
2128 [Bodo Moeller (Google)]
2132 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
2133 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
2134 - added some more tests to do_tests.pl
2135 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
2136 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
2137 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
2138 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
2139 - various changes to netware.pl to enable gcc-cross builds on Win32
2141 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
2142 - various changes to fix missing prototype warnings
2143 - fixed x86nasm.pl to create correct asm files for NASM COFF output
2144 - added AES, WHIRLPOOL and CPUID assembler code to build files
2145 - added missing AES assembler make rules to mk1mf.pl
2146 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
2147 [Guenter Knauf <eflash@gmx.net>]
2149 *) Implement certificate status request TLS extension defined in RFC3546.
2150 A client can set the appropriate parameters and receive the encoded
2151 OCSP response via a callback. A server can query the supplied parameters
2152 and set the encoded OCSP response in the callback. Add simplified examples
2153 to s_client and s_server.
2156 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
2158 *) Fix various bugs:
2159 + Binary incompatibility of ssl_ctx_st structure
2160 + DTLS interoperation with non-compliant servers
2161 + Don't call get_session_cb() without proposed session
2162 + Fix ia64 assembler code
2163 [Andy Polyakov, Steve Henson]
2165 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
2167 *) DTLS Handshake overhaul. There were longstanding issues with
2168 OpenSSL DTLS implementation, which were making it impossible for
2169 RFC 4347 compliant client to communicate with OpenSSL server.
2170 Unfortunately just fixing these incompatibilities would "cut off"
2171 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
2172 server keeps tolerating non RFC compliant syntax. The opposite is
2173 not true, 0.9.8f client can not communicate with earlier server.
2174 This update even addresses CVE-2007-4995.
2177 *) Changes to avoid need for function casts in OpenSSL: some compilers
2178 (gcc 4.2 and later) reject their use.
2179 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
2182 *) Add RFC4507 support to OpenSSL. This includes the corrections in
2183 RFC4507bis. The encrypted ticket format is an encrypted encoded
2184 SSL_SESSION structure, that way new session features are automatically
2187 If a client application caches session in an SSL_SESSION structure
2188 support is transparent because tickets are now stored in the encoded
2191 The SSL_CTX structure automatically generates keys for ticket
2192 protection in servers so again support should be possible
2193 with no application modification.
2195 If a client or server wishes to disable RFC4507 support then the option
2196 SSL_OP_NO_TICKET can be set.
2198 Add a TLS extension debugging callback to allow the contents of any client
2199 or server extensions to be examined.
2201 This work was sponsored by Google.
2204 *) Add initial support for TLS extensions, specifically for the server_name
2205 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
2206 have new members for a host name. The SSL data structure has an
2207 additional member SSL_CTX *initial_ctx so that new sessions can be
2208 stored in that context to allow for session resumption, even after the
2209 SSL has been switched to a new SSL_CTX in reaction to a client's
2210 server_name extension.
2212 New functions (subject to change):
2214 SSL_get_servername()
2215 SSL_get_servername_type()
2218 New CTRL codes and macros (subject to change):
2220 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
2221 - SSL_CTX_set_tlsext_servername_callback()
2222 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
2223 - SSL_CTX_set_tlsext_servername_arg()
2224 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
2226 openssl s_client has a new '-servername ...' option.
2228 openssl s_server has new options '-servername_host ...', '-cert2 ...',
2229 '-key2 ...', '-servername_fatal' (subject to change). This allows
2230 testing the HostName extension for a specific single host name ('-cert'
2231 and '-key' remain fallbacks for handshakes without HostName
2232 negotiation). If the unrecogninzed_name alert has to be sent, this by
2233 default is a warning; it becomes fatal with the '-servername_fatal'
2236 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
2238 *) Add AES and SSE2 assembly language support to VC++ build.
2241 *) Mitigate attack on final subtraction in Montgomery reduction.
2244 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
2245 (which previously caused an internal error).
2248 *) Squeeze another 10% out of IGE mode when in != out.
2251 *) AES IGE mode speedup.
2252 [Dean Gaudet (Google)]
2254 *) Add the Korean symmetric 128-bit cipher SEED (see
2255 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
2256 add SEED ciphersuites from RFC 4162:
2258 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
2259 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
2260 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
2261 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
2263 To minimize changes between patchlevels in the OpenSSL 0.9.8
2264 series, SEED remains excluded from compilation unless OpenSSL
2265 is configured with 'enable-seed'.
2266 [KISA, Bodo Moeller]
2268 *) Mitigate branch prediction attacks, which can be practical if a
2269 single processor is shared, allowing a spy process to extract
2270 information. For detailed background information, see
2271 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
2272 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
2273 and Necessary Software Countermeasures"). The core of the change
2274 are new versions BN_div_no_branch() and
2275 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
2276 respectively, which are slower, but avoid the security-relevant
2277 conditional branches. These are automatically called by BN_div()
2278 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
2279 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
2280 remove a conditional branch.
2282 BN_FLG_CONSTTIME is the new name for the previous
2283 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
2284 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
2285 in the exponent causes BN_mod_exp_mont() to use the alternative
2286 implementation in BN_mod_exp_mont_consttime().) The old name
2287 remains as a deprecated alias.
2289 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
2290 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
2291 constant-time implementations for more than just exponentiation.
2292 Here too the old name is kept as a deprecated alias.
2294 BN_BLINDING_new() will now use BN_dup() for the modulus so that
2295 the BN_BLINDING structure gets an independent copy of the
2296 modulus. This means that the previous "BIGNUM *m" argument to
2297 BN_BLINDING_new() and to BN_BLINDING_create_param() now
2298 essentially becomes "const BIGNUM *m", although we can't actually
2299 change this in the header file before 0.9.9. It allows
2300 RSA_setup_blinding() to use BN_with_flags() on the modulus to
2301 enable BN_FLG_CONSTTIME.
2303 [Matthew D Wood (Intel Corp)]
2305 *) In the SSL/TLS server implementation, be strict about session ID
2306 context matching (which matters if an application uses a single
2307 external cache for different purposes). Previously,
2308 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
2309 set. This did ensure strict client verification, but meant that,
2310 with applications using a single external cache for quite
2311 different requirements, clients could circumvent ciphersuite
2312 restrictions for a given session ID context by starting a session
2313 in a different context.
2316 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2317 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2318 authentication-only ciphersuites.
2321 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
2322 not complete and could lead to a possible single byte overflow
2323 (CVE-2007-5135) [Ben Laurie]
2325 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
2327 *) Since AES128 and AES256 (and similarly Camellia128 and
2328 Camellia256) share a single mask bit in the logic of
2329 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2330 kludge to work properly if AES128 is available and AES256 isn't
2331 (or if Camellia128 is available and Camellia256 isn't).
2334 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
2335 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
2336 When a point or a seed is encoded in a BIT STRING, we need to
2337 prevent the removal of trailing zero bits to get the proper DER
2338 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
2339 of a NamedBitList, for which trailing 0 bits need to be removed.)
2342 *) Have SSL/TLS server implementation tolerate "mismatched" record
2343 protocol version while receiving ClientHello even if the
2344 ClientHello is fragmented. (The server can't insist on the
2345 particular protocol version it has chosen before the ServerHello
2346 message has informed the client about his choice.)
2349 *) Add RFC 3779 support.
2350 [Rob Austein for ARIN, Ben Laurie]
2352 *) Load error codes if they are not already present instead of using a
2353 static variable. This allows them to be cleanly unloaded and reloaded.
2354 Improve header file function name parsing.
2357 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
2358 or CAPABILITY handshake as required by RFCs.
2361 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
2363 *) Introduce limits to prevent malicious keys being able to
2364 cause a denial of service. (CVE-2006-2940)
2365 [Steve Henson, Bodo Moeller]
2367 *) Fix ASN.1 parsing of certain invalid structures that can result
2368 in a denial of service. (CVE-2006-2937) [Steve Henson]
2370 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2371 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2373 *) Fix SSL client code which could crash if connecting to a
2374 malicious SSLv2 server. (CVE-2006-4343)
2375 [Tavis Ormandy and Will Drewry, Google Security Team]
2377 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
2378 match only those. Before that, "AES256-SHA" would be interpreted
2379 as a pattern and match "AES128-SHA" too (since AES128-SHA got
2380 the same strength classification in 0.9.7h) as we currently only
2381 have a single AES bit in the ciphersuite description bitmap.
2382 That change, however, also applied to ciphersuite strings such as
2383 "RC4-MD5" that intentionally matched multiple ciphersuites --
2384 namely, SSL 2.0 ciphersuites in addition to the more common ones
2385 from SSL 3.0/TLS 1.0.
2387 So we change the selection algorithm again: Naming an explicit
2388 ciphersuite selects this one ciphersuite, and any other similar
2389 ciphersuite (same bitmap) from *other* protocol versions.
2390 Thus, "RC4-MD5" again will properly select both the SSL 2.0
2391 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
2393 Since SSL 2.0 does not have any ciphersuites for which the
2394 128/256 bit distinction would be relevant, this works for now.
2395 The proper fix will be to use different bits for AES128 and
2396 AES256, which would have avoided the problems from the beginning;
2397 however, bits are scarce, so we can only do this in a new release
2398 (not just a patchlevel) when we can change the SSL_CIPHER
2399 definition to split the single 'unsigned long mask' bitmap into
2400 multiple values to extend the available space.
2404 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
2406 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2407 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2409 *) Add AES IGE and biIGE modes.
2412 *) Change the Unix randomness entropy gathering to use poll() when
2413 possible instead of select(), since the latter has some
2414 undesirable limitations.
2415 [Darryl Miles via Richard Levitte and Bodo Moeller]
2417 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
2418 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
2419 cannot be implicitly activated as part of, e.g., the "AES" alias.
2420 However, please upgrade to OpenSSL 0.9.9[-dev] for
2421 non-experimental use of the ECC ciphersuites to get TLS extension
2422 support, which is required for curve and point format negotiation
2423 to avoid potential handshake problems.
2426 *) Disable rogue ciphersuites:
2428 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2429 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2430 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2432 The latter two were purportedly from
2433 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2436 Also deactivate the remaining ciphersuites from
2437 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2438 unofficial, and the ID has long expired.
2441 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2442 dual-core machines) and other potential thread-safety issues.
2445 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
2446 versions), which is now available for royalty-free use
2447 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
2448 Also, add Camellia TLS ciphersuites from RFC 4132.
2450 To minimize changes between patchlevels in the OpenSSL 0.9.8
2451 series, Camellia remains excluded from compilation unless OpenSSL
2452 is configured with 'enable-camellia'.
2455 *) Disable the padding bug check when compression is in use. The padding
2456 bug check assumes the first packet is of even length, this is not
2457 necessarily true if compresssion is enabled and can result in false
2458 positives causing handshake failure. The actual bug test is ancient
2459 code so it is hoped that implementations will either have fixed it by
2460 now or any which still have the bug do not support compression.
2463 Changes between 0.9.8a and 0.9.8b [04 May 2006]
2465 *) When applying a cipher rule check to see if string match is an explicit
2466 cipher suite and only match that one cipher suite if it is.
2469 *) Link in manifests for VC++ if needed.
2470 [Austin Ziegler <halostatue@gmail.com>]
2472 *) Update support for ECC-based TLS ciphersuites according to
2473 draft-ietf-tls-ecc-12.txt with proposed changes (but without
2474 TLS extensions, which are supported starting with the 0.9.9
2475 branch, not in the OpenSSL 0.9.8 branch).
2478 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
2479 opaque EVP_CIPHER_CTX handling.
2482 *) Fixes and enhancements to zlib compression code. We now only use
2483 "zlib1.dll" and use the default __cdecl calling convention on Win32
2484 to conform with the standards mentioned here:
2485 http://www.zlib.net/DLL_FAQ.txt
2486 Static zlib linking now works on Windows and the new --with-zlib-include
2487 --with-zlib-lib options to Configure can be used to supply the location
2488 of the headers and library. Gracefully handle case where zlib library
2492 *) Several fixes and enhancements to the OID generation code. The old code
2493 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
2494 handle numbers larger than ULONG_MAX, truncated printing and had a
2495 non standard OBJ_obj2txt() behaviour.
2498 *) Add support for building of engines under engine/ as shared libraries
2499 under VC++ build system.
2502 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
2503 Hopefully, we will not see any false combination of paths any more.
2506 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
2508 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2509 (part of SSL_OP_ALL). This option used to disable the
2510 countermeasure against man-in-the-middle protocol-version
2511 rollback in the SSL 2.0 server implementation, which is a bad
2512 idea. (CVE-2005-2969)
2514 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2515 for Information Security, National Institute of Advanced Industrial
2516 Science and Technology [AIST], Japan)]
2518 *) Add two function to clear and return the verify parameter flags.
2521 *) Keep cipherlists sorted in the source instead of sorting them at
2522 runtime, thus removing the need for a lock.
2525 *) Avoid some small subgroup attacks in Diffie-Hellman.
2526 [Nick Mathewson and Ben Laurie]
2528 *) Add functions for well-known primes.
2531 *) Extended Windows CE support.
2532 [Satoshi Nakamura and Andy Polyakov]
2534 *) Initialize SSL_METHOD structures at compile time instead of during
2535 runtime, thus removing the need for a lock.
2538 *) Make PKCS7_decrypt() work even if no certificate is supplied by
2539 attempting to decrypt each encrypted key in turn. Add support to
2543 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
2545 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
2548 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
2551 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
2552 key into the same file any more.
2555 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
2558 *) Add -utf8 command line and config file option to 'ca'.
2559 [Stefan <stf@udoma.org]
2561 *) Removed the macro des_crypt(), as it seems to conflict with some
2562 libraries. Use DES_crypt().
2565 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
2566 involves renaming the source and generated shared-libs for
2567 both. The engines will accept the corrected or legacy ids
2568 ('ncipher' and '4758_cca' respectively) when binding. NB,
2569 this only applies when building 'shared'.
2570 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
2572 *) Add attribute functions to EVP_PKEY structure. Modify
2573 PKCS12_create() to recognize a CSP name attribute and
2574 use it. Make -CSP option work again in pkcs12 utility.
2577 *) Add new functionality to the bn blinding code:
2578 - automatic re-creation of the BN_BLINDING parameters after
2579 a fixed number of uses (currently 32)
2580 - add new function for parameter creation
2581 - introduce flags to control the update behaviour of the
2582 BN_BLINDING parameters
2583 - hide BN_BLINDING structure
2584 Add a second BN_BLINDING slot to the RSA structure to improve
2585 performance when a single RSA object is shared among several
2589 *) Add support for DTLS.
2590 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
2592 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
2593 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
2596 *) Remove buggy and incompletet DH cert support from
2597 ssl/ssl_rsa.c and ssl/s3_both.c
2600 *) Use SHA-1 instead of MD5 as the default digest algorithm for
2601 the apps/openssl applications.
2604 *) Compile clean with "-Wall -Wmissing-prototypes
2605 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
2606 DEBUG_SAFESTACK must also be set.
2609 *) Change ./Configure so that certain algorithms can be disabled by default.
2610 The new counterpiece to "no-xxx" is "enable-xxx".
2612 The patented RC5 and MDC2 algorithms will now be disabled unless
2613 "enable-rc5" and "enable-mdc2", respectively, are specified.
2615 (IDEA remains enabled despite being patented. This is because IDEA
2616 is frequently required for interoperability, and there is no license
2617 fee for non-commercial use. As before, "no-idea" can be used to
2618 avoid this algorithm.)
2622 *) Add processing of proxy certificates (see RFC 3820). This work was
2623 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
2624 EGEE (Enabling Grids for E-science in Europe).
2627 *) RC4 performance overhaul on modern architectures/implementations, such
2628 as Intel P4, IA-64 and AMD64.
2631 *) New utility extract-section.pl. This can be used specify an alternative
2632 section number in a pod file instead of having to treat each file as
2633 a separate case in Makefile. This can be done by adding two lines to the
2636 =for comment openssl_section:XXX
2638 The blank line is mandatory.
2642 *) New arguments -certform, -keyform and -pass for s_client and s_server
2643 to allow alternative format key and certificate files and passphrase
2647 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
2648 update associated structures and add various utility functions.
2650 Add new policy related verify parameters, include policy checking in
2651 standard verify code. Enhance 'smime' application with extra parameters
2652 to support policy checking and print out.
2655 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
2656 Nehemiah processors. These extensions support AES encryption in hardware
2657 as well as RNG (though RNG support is currently disabled).
2658 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
2660 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
2663 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
2664 [Andy Polyakov and a number of other people]
2666 *) Improved PowerPC platform support. Most notably BIGNUM assembler
2667 implementation contributed by IBM.
2668 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
2670 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
2671 exponent rather than 'unsigned long'. There is a corresponding change to
2672 the new 'rsa_keygen' element of the RSA_METHOD structure.
2673 [Jelte Jansen, Geoff Thorpe]
2675 *) Functionality for creating the initial serial number file is now
2676 moved from CA.pl to the 'ca' utility with a new option -create_serial.
2678 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
2679 number file to 1, which is bound to cause problems. To avoid
2680 the problems while respecting compatibility between different 0.9.7
2681 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
2682 CA.pl for serial number initialization. With the new release 0.9.8,
2683 we can fix the problem directly in the 'ca' utility.)
2686 *) Reduced header interdepencies by declaring more opaque objects in
2687 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
2688 give fewer recursive includes, which could break lazy source code - so
2689 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
2690 developers should define this symbol when building and using openssl to
2691 ensure they track the recommended behaviour, interfaces, [etc], but
2692 backwards-compatible behaviour prevails when this isn't defined.
2695 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
2698 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
2699 This will generate a random key of the appropriate length based on the
2700 cipher context. The EVP_CIPHER can provide its own random key generation
2701 routine to support keys of a specific form. This is used in the des and
2702 3des routines to generate a key of the correct parity. Update S/MIME
2703 code to use new functions and hence generate correct parity DES keys.
2704 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
2705 valid (weak or incorrect parity).
2708 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
2709 as looking them up. This is useful when the verified structure may contain
2710 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
2711 present unless the new PKCS7_NO_CRL flag is asserted.
2714 *) Extend ASN1 oid configuration module. It now additionally accepts the
2717 shortName = some long name, 1.2.3.4
2720 *) Reimplemented the BN_CTX implementation. There is now no more static
2721 limitation on the number of variables it can handle nor the depth of the
2722 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
2723 information can now expand as required, and rather than having a single
2724 static array of bignums, BN_CTX now uses a linked-list of such arrays
2725 allowing it to expand on demand whilst maintaining the usefulness of
2726 BN_CTX's "bundling".
2729 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
2730 to allow all RSA operations to function using a single BN_CTX.
2733 *) Preliminary support for certificate policy evaluation and checking. This
2734 is initially intended to pass the tests outlined in "Conformance Testing
2735 of Relying Party Client Certificate Path Processing Logic" v1.07.
2738 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
2739 remained unused and not that useful. A variety of other little bignum
2740 tweaks and fixes have also been made continuing on from the audit (see
2744 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
2745 associated ASN1, EVP and SSL functions and old ASN1 macros.
2748 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
2749 and this should never fail. So the return value from the use of
2750 BN_set_word() (which can fail due to needless expansion) is now deprecated;
2751 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
2754 *) BN_CTX_get() should return zero-valued bignums, providing the same
2755 initialised value as BN_new().
2756 [Geoff Thorpe, suggested by Ulf Möller]
2758 *) Support for inhibitAnyPolicy certificate extension.
2761 *) An audit of the BIGNUM code is underway, for which debugging code is
2762 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
2763 is considered valid when processing BIGNUMs, and causes execution to
2764 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
2765 further steps are taken to deliberately pollute unused data in BIGNUM
2766 structures to try and expose faulty code further on. For now, openssl will
2767 (in its default mode of operation) continue to tolerate the inconsistent
2768 forms that it has tolerated in the past, but authors and packagers should
2769 consider trying openssl and their own applications when compiled with
2770 these debugging symbols defined. It will help highlight potential bugs in
2771 their own code, and will improve the test coverage for OpenSSL itself. At
2772 some point, these tighter rules will become openssl's default to improve
2773 maintainability, though the assert()s and other overheads will remain only
2774 in debugging configurations. See bn.h for more details.
2775 [Geoff Thorpe, Nils Larsch, Ulf Möller]
2777 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
2778 that can only be obtained through BN_CTX_new() (which implicitly
2779 initialises it). The presence of this function only made it possible
2780 to overwrite an existing structure (and cause memory leaks).
2783 *) Because of the callback-based approach for implementing LHASH as a
2784 template type, lh_insert() adds opaque objects to hash-tables and
2785 lh_doall() or lh_doall_arg() are typically used with a destructor callback
2786 to clean up those corresponding objects before destroying the hash table
2787 (and losing the object pointers). So some over-zealous constifications in
2788 LHASH have been relaxed so that lh_insert() does not take (nor store) the
2789 objects as "const" and the lh_doall[_arg] callback wrappers are not
2790 prototyped to have "const" restrictions on the object pointers they are
2791 given (and so aren't required to cast them away any more).
2794 *) The tmdiff.h API was so ugly and minimal that our own timing utility
2795 (speed) prefers to use its own implementation. The two implementations
2796 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
2797 its object type properly exposed (MS_TM) instead of casting to/from "char
2798 *". This may still change yet if someone realises MS_TM and "ms_time_***"
2799 aren't necessarily the greatest nomenclatures - but this is what was used
2800 internally to the implementation so I've used that for now.
2803 *) Ensure that deprecated functions do not get compiled when
2804 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
2805 the self-tests were still using deprecated key-generation functions so
2806 these have been updated also.
2809 *) Reorganise PKCS#7 code to separate the digest location functionality
2810 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
2811 New function PKCS7_set_digest() to set the digest type for PKCS#7
2812 digestedData type. Add additional code to correctly generate the
2813 digestedData type and add support for this type in PKCS7 initialization
2817 *) New function PKCS7_set0_type_other() this initializes a PKCS7
2818 structure of type "other".
2821 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
2822 sure the loop does correctly stop and breaking ("division by zero")
2823 modulus operations are not performed. The (pre-generated) prime
2824 table crypto/bn/bn_prime.h was already correct, but it could not be
2825 re-generated on some platforms because of the "division by zero"
2826 situation in the script.
2827 [Ralf S. Engelschall]
2829 *) Update support for ECC-based TLS ciphersuites according to
2830 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
2831 SHA-1 now is only used for "small" curves (where the
2832 representation of a field element takes up to 24 bytes); for
2833 larger curves, the field element resulting from ECDH is directly
2834 used as premaster secret.
2835 [Douglas Stebila (Sun Microsystems Laboratories)]
2837 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
2838 curve secp160r1 to the tests.
2839 [Douglas Stebila (Sun Microsystems Laboratories)]
2841 *) Add the possibility to load symbols globally with DSO.
2842 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
2844 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
2845 control of the error stack.
2848 *) Add support for STORE in ENGINE.
2851 *) Add the STORE type. The intention is to provide a common interface
2852 to certificate and key stores, be they simple file-based stores, or
2853 HSM-type store, or LDAP stores, or...
2854 NOTE: The code is currently UNTESTED and isn't really used anywhere.
2857 *) Add a generic structure called OPENSSL_ITEM. This can be used to
2858 pass a list of arguments to any function as well as provide a way
2859 for a function to pass data back to the caller.
2862 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
2863 works like BUF_strdup() but can be used to duplicate a portion of
2864 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
2868 *) Add the function sk_find_ex() which works like sk_find(), but will
2869 return an index to an element even if an exact match couldn't be
2870 found. The index is guaranteed to point at the element where the
2871 searched-for key would be inserted to preserve sorting order.
2874 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
2875 takes an extra flags argument for optional functionality. Currently,
2876 the following flags are defined:
2878 OBJ_BSEARCH_VALUE_ON_NOMATCH
2879 This one gets OBJ_bsearch_ex() to return a pointer to the first
2880 element where the comparing function returns a negative or zero
2883 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
2884 This one gets OBJ_bsearch_ex() to return a pointer to the first
2885 element where the comparing function returns zero. This is useful
2886 if there are more than one element where the comparing function
2890 *) Make it possible to create self-signed certificates with 'openssl ca'
2891 in such a way that the self-signed certificate becomes part of the
2892 CA database and uses the same mechanisms for serial number generation
2893 as all other certificate signing. The new flag '-selfsign' enables
2894 this functionality. Adapt CA.sh and CA.pl.in.
2897 *) Add functionality to check the public key of a certificate request
2898 against a given private. This is useful to check that a certificate
2899 request can be signed by that key (self-signing).
2902 *) Make it possible to have multiple active certificates with the same
2903 subject in the CA index file. This is done only if the keyword
2904 'unique_subject' is set to 'no' in the main CA section (default
2905 if 'CA_default') of the configuration file. The value is saved
2906 with the database itself in a separate index attribute file,
2907 named like the index file with '.attr' appended to the name.
2910 *) Generate muti valued AVAs using '+' notation in config files for
2914 *) Support for nameConstraints certificate extension.
2917 *) Support for policyConstraints certificate extension.
2920 *) Support for policyMappings certificate extension.
2923 *) Make sure the default DSA_METHOD implementation only uses its
2924 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
2925 and change its own handlers to be NULL so as to remove unnecessary
2926 indirection. This lets alternative implementations fallback to the
2927 default implementation more easily.
2930 *) Support for directoryName in GeneralName related extensions
2934 *) Make it possible to link applications using Makefile.shared.
2935 Make that possible even when linking against static libraries!
2938 *) Support for single pass processing for S/MIME signing. This now
2939 means that S/MIME signing can be done from a pipe, in addition
2940 cleartext signing (multipart/signed type) is effectively streaming
2941 and the signed data does not need to be all held in memory.
2943 This is done with a new flag PKCS7_STREAM. When this flag is set
2944 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
2945 is done after the data is output (and digests calculated) in
2946 SMIME_write_PKCS7().
2949 *) Add full support for -rpath/-R, both in shared libraries and
2950 applications, at least on the platforms where it's known how
2954 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
2955 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
2956 will now compute a table of multiples of the generator that
2957 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
2958 faster (notably in the case of a single point multiplication,
2959 scalar * generator).
2960 [Nils Larsch, Bodo Moeller]
2962 *) IPv6 support for certificate extensions. The various extensions
2963 which use the IP:a.b.c.d can now take IPv6 addresses using the
2964 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
2968 *) Added an ENGINE that implements RSA by performing private key
2969 exponentiations with the GMP library. The conversions to and from
2970 GMP's mpz_t format aren't optimised nor are any montgomery forms
2971 cached, and on x86 it appears OpenSSL's own performance has caught up.
2972 However there are likely to be other architectures where GMP could
2973 provide a boost. This ENGINE is not built in by default, but it can be
2974 specified at Configure time and should be accompanied by the necessary
2975 linker additions, eg;
2976 ./config -DOPENSSL_USE_GMP -lgmp
2979 *) "openssl engine" will not display ENGINE/DSO load failure errors when
2980 testing availability of engines with "-t" - the old behaviour is
2981 produced by increasing the feature's verbosity with "-tt".
2984 *) ECDSA routines: under certain error conditions uninitialized BN objects
2985 could be freed. Solution: make sure initialization is performed early
2986 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
2990 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
2991 and DH_METHOD (eg. by ENGINE implementations) to override the normal
2992 software implementations. For DSA and DH, parameter generation can
2993 also be overriden by providing the appropriate method callbacks.
2996 *) Change the "progress" mechanism used in key-generation and
2997 primality testing to functions that take a new BN_GENCB pointer in
2998 place of callback/argument pairs. The new API functions have "_ex"
2999 postfixes and the older functions are reimplemented as wrappers for
3000 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
3001 declarations of the old functions to help (graceful) attempts to
3002 migrate to the new functions. Also, the new key-generation API
3003 functions operate on a caller-supplied key-structure and return
3004 success/failure rather than returning a key or NULL - this is to
3005 help make "keygen" another member function of RSA_METHOD etc.
3007 Example for using the new callback interface:
3009 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
3013 BN_GENCB_set(&my_cb, my_callback, my_arg);
3015 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
3016 /* For the meaning of a, b in calls to my_callback(), see the
3017 * documentation of the function that calls the callback.
3018 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
3019 * my_callback should return 1 if it wants BN_is_prime_ex()
3020 * to continue, or 0 to stop.
3025 *) Change the ZLIB compression method to be stateful, and make it
3026 available to TLS with the number defined in
3027 draft-ietf-tls-compression-04.txt.
3030 *) Add the ASN.1 structures and functions for CertificatePair, which
3031 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
3033 CertificatePair ::= SEQUENCE {
3034 forward [0] Certificate OPTIONAL,
3035 reverse [1] Certificate OPTIONAL,
3036 -- at least one of the pair shall be present -- }
3038 Also implement the PEM functions to read and write certificate
3039 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
3041 This needed to be defined, mostly for the sake of the LDAP
3042 attribute crossCertificatePair, but may prove useful elsewhere as
3046 *) Make it possible to inhibit symlinking of shared libraries in
3047 Makefile.shared, for Cygwin's sake.
3050 *) Extend the BIGNUM API by creating a function
3051 void BN_set_negative(BIGNUM *a, int neg);
3052 and a macro that behave like
3053 int BN_is_negative(const BIGNUM *a);
3055 to avoid the need to access 'a->neg' directly in applications.
3058 *) Implement fast modular reduction for pseudo-Mersenne primes
3059 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
3060 EC_GROUP_new_curve_GFp() will now automatically use this
3062 [Nils Larsch <nla@trustcenter.de>]
3064 *) Add new lock type (CRYPTO_LOCK_BN).
3067 *) Change the ENGINE framework to automatically load engines
3068 dynamically from specific directories unless they could be
3069 found to already be built in or loaded. Move all the
3070 current engines except for the cryptodev one to a new
3072 The engines in engines/ are built as shared libraries if
3073 the "shared" options was given to ./Configure or ./config.
3074 Otherwise, they are inserted in libcrypto.a.
3075 /usr/local/ssl/engines is the default directory for dynamic
3076 engines, but that can be overriden at configure time through
3077 the usual use of --prefix and/or --openssldir, and at run
3078 time with the environment variable OPENSSL_ENGINES.
3079 [Geoff Thorpe and Richard Levitte]
3081 *) Add Makefile.shared, a helper makefile to build shared
3082 libraries. Addapt Makefile.org.
3085 *) Add version info to Win32 DLLs.
3086 [Peter 'Luna' Runestig" <peter@runestig.com>]
3088 *) Add new 'medium level' PKCS#12 API. Certificates and keys
3089 can be added using this API to created arbitrary PKCS#12
3090 files while avoiding the low level API.
3092 New options to PKCS12_create(), key or cert can be NULL and
3093 will then be omitted from the output file. The encryption
3094 algorithm NIDs can be set to -1 for no encryption, the mac
3095 iteration count can be set to 0 to omit the mac.
3097 Enhance pkcs12 utility by making the -nokeys and -nocerts
3098 options work when creating a PKCS#12 file. New option -nomac
3099 to omit the mac, NONE can be set for an encryption algorithm.
3100 New code is modified to use the enhanced PKCS12_create()
3101 instead of the low level API.
3104 *) Extend ASN1 encoder to support indefinite length constructed
3105 encoding. This can output sequences tags and octet strings in
3106 this form. Modify pk7_asn1.c to support indefinite length
3107 encoding. This is experimental and needs additional code to
3108 be useful, such as an ASN1 bio and some enhanced streaming
3111 Extend template encode functionality so that tagging is passed
3112 down to the template encoder.
3115 *) Let 'openssl req' fail if an argument to '-newkey' is not
3116 recognized instead of using RSA as a default.
3119 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
3120 As these are not official, they are not included in "ALL";
3121 the "ECCdraft" ciphersuite group alias can be used to select them.
3122 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
3124 *) Add ECDH engine support.
3125 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
3127 *) Add ECDH in new directory crypto/ecdh/.
3128 [Douglas Stebila (Sun Microsystems Laboratories)]
3130 *) Let BN_rand_range() abort with an error after 100 iterations
3131 without success (which indicates a broken PRNG).
3134 *) Change BN_mod_sqrt() so that it verifies that the input value
3135 is really the square of the return value. (Previously,
3136 BN_mod_sqrt would show GIGO behaviour.)
3139 *) Add named elliptic curves over binary fields from X9.62, SECG,
3140 and WAP/WTLS; add OIDs that were still missing.
3142 [Sheueling Chang Shantz and Douglas Stebila
3143 (Sun Microsystems Laboratories)]
3145 *) Extend the EC library for elliptic curves over binary fields
3146 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
3149 EC_GF2m_simple_method
3153 EC_GROUP_new_curve_GF2m
3154 EC_GROUP_set_curve_GF2m
3155 EC_GROUP_get_curve_GF2m
3156 EC_POINT_set_affine_coordinates_GF2m
3157 EC_POINT_get_affine_coordinates_GF2m
3158 EC_POINT_set_compressed_coordinates_GF2m
3160 Point compression for binary fields is disabled by default for
3161 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
3164 As binary polynomials are represented as BIGNUMs, various members
3165 of the EC_GROUP and EC_POINT data structures can be shared
3166 between the implementations for prime fields and binary fields;
3167 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
3168 are essentially identical to their ..._GFp counterparts.
3169 (For simplicity, the '..._GFp' prefix has been dropped from
3170 various internal method names.)
3172 An internal 'field_div' method (similar to 'field_mul' and
3173 'field_sqr') has been added; this is used only for binary fields.
3175 [Sheueling Chang Shantz and Douglas Stebila
3176 (Sun Microsystems Laboratories)]
3178 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
3179 through methods ('mul', 'precompute_mult').
3181 The generic implementations (now internally called 'ec_wNAF_mul'
3182 and 'ec_wNAF_precomputed_mult') remain the default if these
3183 methods are undefined.
3185 [Sheueling Chang Shantz and Douglas Stebila
3186 (Sun Microsystems Laboratories)]
3188 *) New function EC_GROUP_get_degree, which is defined through
3189 EC_METHOD. For curves over prime fields, this returns the bit
3190 length of the modulus.
3192 [Sheueling Chang Shantz and Douglas Stebila
3193 (Sun Microsystems Laboratories)]
3195 *) New functions EC_GROUP_dup, EC_POINT_dup.
3196 (These simply call ..._new and ..._copy).
3198 [Sheueling Chang Shantz and Douglas Stebila
3199 (Sun Microsystems Laboratories)]
3201 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
3202 Polynomials are represented as BIGNUMs (where the sign bit is not
3203 used) in the following functions [macros]:
3206 BN_GF2m_sub [= BN_GF2m_add]
3207 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
3208 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
3209 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
3211 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
3212 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
3213 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
3214 BN_GF2m_cmp [= BN_ucmp]
3216 (Note that only the 'mod' functions are actually for fields GF(2^m).
3217 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
3219 For some functions, an the irreducible polynomial defining a
3220 field can be given as an 'unsigned int[]' with strictly
3221 decreasing elements giving the indices of those bits that are set;
3222 i.e., p[] represents the polynomial
3223 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
3225 p[0] > p[1] > ... > p[k] = 0.
3226 This applies to the following functions:
3231 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
3232 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
3234 BN_GF2m_mod_sqrt_arr
3235 BN_GF2m_mod_solve_quad_arr
3239 Conversion can be performed by the following functions:
3244 bntest.c has additional tests for binary polynomial arithmetic.
3246 Two implementations for BN_GF2m_mod_div() are available.
3247 The default algorithm simply uses BN_GF2m_mod_inv() and
3248 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
3249 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
3250 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
3252 [Sheueling Chang Shantz and Douglas Stebila
3253 (Sun Microsystems Laboratories)]
3255 *) Add new error code 'ERR_R_DISABLED' that can be used when some
3256 functionality is disabled at compile-time.
3257 [Douglas Stebila <douglas.stebila@sun.com>]
3259 *) Change default behaviour of 'openssl asn1parse' so that more
3260 information is visible when viewing, e.g., a certificate:
3262 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
3263 mode the content of non-printable OCTET STRINGs is output in a
3264 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
3265 avoid the appearance of a printable string.
3266 [Nils Larsch <nla@trustcenter.de>]
3268 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
3270 EC_GROUP_set_asn1_flag()
3271 EC_GROUP_get_asn1_flag()
3272 EC_GROUP_set_point_conversion_form()
3273 EC_GROUP_get_point_conversion_form()
3274 These control ASN1 encoding details:
3275 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
3276 has been set to OPENSSL_EC_NAMED_CURVE.
3277 - Points are encoded in uncompressed form by default; options for
3278 asn1_for are as for point2oct, namely
3279 POINT_CONVERSION_COMPRESSED
3280 POINT_CONVERSION_UNCOMPRESSED
3281 POINT_CONVERSION_HYBRID
3283 Also add 'seed' and 'seed_len' members to EC_GROUP with access
3286 EC_GROUP_get0_seed()
3287 EC_GROUP_get_seed_len()
3288 This is used only for ASN1 purposes (so far).
3289 [Nils Larsch <nla@trustcenter.de>]
3291 *) Add 'field_type' member to EC_METHOD, which holds the NID
3292 of the appropriate field type OID. The new function
3293 EC_METHOD_get_field_type() returns this value.
3294 [Nils Larsch <nla@trustcenter.de>]
3299 EC_POINT_point2hex()
3300 EC_POINT_hex2point()
3301 providing useful interfaces to EC_POINT_point2oct() and
3302 EC_POINT_oct2point().
3303 [Nils Larsch <nla@trustcenter.de>]
3305 *) Change internals of the EC library so that the functions
3306 EC_GROUP_set_generator()
3307 EC_GROUP_get_generator()
3308 EC_GROUP_get_order()
3309 EC_GROUP_get_cofactor()
3310 are implemented directly in crypto/ec/ec_lib.c and not dispatched
3311 to methods, which would lead to unnecessary code duplication when
3312 adding different types of curves.
3313 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
3315 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
3316 arithmetic, and such that modified wNAFs are generated
3317 (which avoid length expansion in many cases).
3320 *) Add a function EC_GROUP_check_discriminant() (defined via
3321 EC_METHOD) that verifies that the curve discriminant is non-zero.
3323 Add a function EC_GROUP_check() that makes some sanity tests
3324 on a EC_GROUP, its generator and order. This includes
3325 EC_GROUP_check_discriminant().
3326 [Nils Larsch <nla@trustcenter.de>]
3328 *) Add ECDSA in new directory crypto/ecdsa/.
3330 Add applications 'openssl ecparam' and 'openssl ecdsa'
3331 (these are based on 'openssl dsaparam' and 'openssl dsa').
3333 ECDSA support is also included in various other files across the
3334 library. Most notably,
3335 - 'openssl req' now has a '-newkey ecdsa:file' option;
3336 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
3337 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
3338 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
3339 them suitable for ECDSA where domain parameters must be
3340 extracted before the specific public key;
3341 - ECDSA engine support has been added.
3342 [Nils Larsch <nla@trustcenter.de>]
3344 *) Include some named elliptic curves, and add OIDs from X9.62,
3345 SECG, and WAP/WTLS. Each curve can be obtained from the new
3347 EC_GROUP_new_by_curve_name(),
3348 and the list of available named curves can be obtained with
3349 EC_get_builtin_curves().
3350 Also add a 'curve_name' member to EC_GROUP objects, which can be
3352 EC_GROUP_set_curve_name()
3353 EC_GROUP_get_curve_name()
3354 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
3356 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
3357 was actually never needed) and in BN_mul(). The removal in BN_mul()
3358 required a small change in bn_mul_part_recursive() and the addition
3359 of the functions bn_cmp_part_words(), bn_sub_part_words() and
3360 bn_add_part_words(), which do the same thing as bn_cmp_words(),
3361 bn_sub_words() and bn_add_words() except they take arrays with
3365 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
3367 *) Cleanse PEM buffers before freeing them since they may contain
3369 [Benjamin Bennett <ben@psc.edu>]
3371 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
3372 a ciphersuite string such as "DEFAULT:RSA" cannot enable
3373 authentication-only ciphersuites.
3376 *) Since AES128 and AES256 share a single mask bit in the logic of
3377 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
3378 kludge to work properly if AES128 is available and AES256 isn't.
3381 *) Expand security boundary to match 1.1.1 module.
3384 *) Remove redundant features: hash file source, editing of test vectors
3385 modify fipsld to use external fips_premain.c signature.
3388 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
3389 run algorithm test programs.
3392 *) Make algorithm test programs more tolerant of whitespace.
3395 *) Have SSL/TLS server implementation tolerate "mismatched" record
3396 protocol version while receiving ClientHello even if the
3397 ClientHello is fragmented. (The server can't insist on the
3398 particular protocol version it has chosen before the ServerHello
3399 message has informed the client about his choice.)
3402 *) Load error codes if they are not already present instead of using a
3403 static variable. This allows them to be cleanly unloaded and reloaded.
3406 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
3408 *) Introduce limits to prevent malicious keys being able to
3409 cause a denial of service. (CVE-2006-2940)
3410 [Steve Henson, Bodo Moeller]
3412 *) Fix ASN.1 parsing of certain invalid structures that can result
3413 in a denial of service. (CVE-2006-2937) [Steve Henson]
3415 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
3416 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
3418 *) Fix SSL client code which could crash if connecting to a
3419 malicious SSLv2 server. (CVE-2006-4343)
3420 [Tavis Ormandy and Will Drewry, Google Security Team]
3422 *) Change ciphersuite string processing so that an explicit
3423 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
3424 will no longer include "AES128-SHA"), and any other similar
3425 ciphersuite (same bitmap) from *other* protocol versions (so that
3426 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
3427 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
3428 changes from 0.9.8b and 0.9.8d.
3431 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
3433 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
3434 (CVE-2006-4339) [Ben Laurie and Google Security Team]
3436 *) Change the Unix randomness entropy gathering to use poll() when
3437 possible instead of select(), since the latter has some
3438 undesirable limitations.
3439 [Darryl Miles via Richard Levitte and Bodo Moeller]
3441 *) Disable rogue ciphersuites:
3443 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
3444 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
3445 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
3447 The latter two were purportedly from
3448 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
3451 Also deactive the remaining ciphersuites from
3452 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
3453 unofficial, and the ID has long expired.
3456 *) Fix RSA blinding Heisenbug (problems sometimes occured on
3457 dual-core machines) and other potential thread-safety issues.
3460 Changes between 0.9.7i and 0.9.7j [04 May 2006]
3462 *) Adapt fipsld and the build system to link against the validated FIPS
3463 module in FIPS mode.
3466 *) Fixes for VC++ 2005 build under Windows.
3469 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
3470 from a Windows bash shell such as MSYS. It is autodetected from the
3471 "config" script when run from a VC++ environment. Modify standard VC++
3472 build to use fipscanister.o from the GNU make build.
3475 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
3477 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
3478 The value now differs depending on if you build for FIPS or not.
3479 BEWARE! A program linked with a shared FIPSed libcrypto can't be
3480 safely run with a non-FIPSed libcrypto, as it may crash because of
3481 the difference induced by this change.
3484 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
3486 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
3487 (part of SSL_OP_ALL). This option used to disable the
3488 countermeasure against man-in-the-middle protocol-version
3489 rollback in the SSL 2.0 server implementation, which is a bad
3490 idea. (CVE-2005-2969)
3492 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
3493 for Information Security, National Institute of Advanced Industrial
3494 Science and Technology [AIST], Japan)]
3496 *) Minimal support for X9.31 signatures and PSS padding modes. This is
3497 mainly for FIPS compliance and not fully integrated at this stage.
3500 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
3501 the exponentiation using a fixed-length exponent. (Otherwise,
3502 the information leaked through timing could expose the secret key
3503 after many signatures; cf. Bleichenbacher's attack on DSA with
3507 *) Make a new fixed-window mod_exp implementation the default for
3508 RSA, DSA, and DH private-key operations so that the sequence of
3509 squares and multiplies and the memory access pattern are
3510 independent of the particular secret key. This will mitigate
3511 cache-timing and potential related attacks.
3513 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
3514 and this is automatically used by BN_mod_exp_mont() if the new flag
3515 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
3516 will use this BN flag for private exponents unless the flag
3517 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
3518 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
3520 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
3522 *) Change the client implementation for SSLv23_method() and
3523 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
3524 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
3525 (Previously, the SSL 2.0 backwards compatible Client Hello
3526 message format would be used even with SSL_OP_NO_SSLv2.)
3529 *) Add support for smime-type MIME parameter in S/MIME messages which some
3533 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
3534 a threadsafe manner. Modify rsa code to use new function and add calls
3535 to dsa and dh code (which had race conditions before).
3538 *) Include the fixed error library code in the C error file definitions
3539 instead of fixing them up at runtime. This keeps the error code
3540 structures constant.
3543 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
3545 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
3548 *) Fixes for newer kerberos headers. NB: the casts are needed because
3549 the 'length' field is signed on one version and unsigned on another
3550 with no (?) obvious way to tell the difference, without these VC++
3551 complains. Also the "definition" of FAR (blank) is no longer included
3552 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
3553 some needed definitions.
3556 *) Undo Cygwin change.
3559 *) Added support for proxy certificates according to RFC 3820.
3560 Because they may be a security thread to unaware applications,
3561 they must be explicitely allowed in run-time. See
3562 docs/HOWTO/proxy_certificates.txt for further information.
3565 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
3567 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
3568 server and client random values. Previously
3569 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
3570 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
3572 This change has negligible security impact because:
3574 1. Server and client random values still have 24 bytes of pseudo random
3577 2. Server and client random values are sent in the clear in the initial
3580 3. The master secret is derived using the premaster secret (48 bytes in
3581 size for static RSA ciphersuites) as well as client server and random
3584 The OpenSSL team would like to thank the UK NISCC for bringing this issue
3587 [Stephen Henson, reported by UK NISCC]
3589 *) Use Windows randomness collection on Cygwin.
3592 *) Fix hang in EGD/PRNGD query when communication socket is closed
3593 prematurely by EGD/PRNGD.
3594 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
3596 *) Prompt for pass phrases when appropriate for PKCS12 input format.
3599 *) Back-port of selected performance improvements from development
3600 branch, as well as improved support for PowerPC platforms.
3603 *) Add lots of checks for memory allocation failure, error codes to indicate
3604 failure and freeing up memory if a failure occurs.
3605 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
3607 *) Add new -passin argument to dgst.
3610 *) Perform some character comparisons of different types in X509_NAME_cmp:
3611 this is needed for some certificates that reencode DNs into UTF8Strings
3612 (in violation of RFC3280) and can't or wont issue name rollover
3616 *) Make an explicit check during certificate validation to see that
3617 the CA setting in each certificate on the chain is correct. As a
3618 side effect always do the following basic checks on extensions,
3619 not just when there's an associated purpose to the check:
3621 - if there is an unhandled critical extension (unless the user
3622 has chosen to ignore this fault)
3623 - if the path length has been exceeded (if one is set at all)
3624 - that certain extensions fit the associated purpose (if one has
3628 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
3630 *) Avoid a race condition when CRLs are checked in a multi threaded
3631 environment. This would happen due to the reordering of the revoked
3632 entries during signature checking and serial number lookup. Now the
3633 encoding is cached and the serial number sort performed under a lock.
3634 Add new STACK function sk_is_sorted().
3637 *) Add Delta CRL to the extension code.
3640 *) Various fixes to s3_pkt.c so alerts are sent properly.
3641 [David Holmes <d.holmes@f5.com>]
3643 *) Reduce the chances of duplicate issuer name and serial numbers (in
3644 violation of RFC3280) using the OpenSSL certificate creation utilities.
3645 This is done by creating a random 64 bit value for the initial serial
3646 number when a serial number file is created or when a self signed
3647 certificate is created using 'openssl req -x509'. The initial serial
3648 number file is created using 'openssl x509 -next_serial' in CA.pl
3649 rather than being initialized to 1.
3652 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
3654 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
3655 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
3656 [Joe Orton, Steve Henson]
3658 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
3660 [Joe Orton, Steve Henson]
3662 *) Make it possible to have multiple active certificates with the same
3663 subject in the CA index file. This is done only if the keyword
3664 'unique_subject' is set to 'no' in the main CA section (default
3665 if 'CA_default') of the configuration file. The value is saved
3666 with the database itself in a separate index attribute file,
3667 named like the index file with '.attr' appended to the name.
3670 *) X509 verify fixes. Disable broken certificate workarounds when
3671 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
3672 keyUsage extension present. Don't accept CRLs with unhandled critical
3673 extensions: since verify currently doesn't process CRL extensions this
3674 rejects a CRL with *any* critical extensions. Add new verify error codes
3678 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
3679 A clarification of RFC2560 will require the use of OCTET STRINGs and
3680 some implementations cannot handle the current raw format. Since OpenSSL
3681 copies and compares OCSP nonces as opaque blobs without any attempt at
3682 parsing them this should not create any compatibility issues.
3685 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
3686 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
3687 this HMAC (and other) operations are several times slower than OpenSSL
3691 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
3692 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3694 *) Use the correct content when signing type "other".
3697 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
3699 *) Fix various bugs revealed by running the NISCC test suite:
3701 Stop out of bounds reads in the ASN1 code when presented with
3702 invalid tags (CVE-2003-0543 and CVE-2003-0544).
3704 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
3706 If verify callback ignores invalid public key errors don't try to check
3707 certificate signature with the NULL public key.
3711 *) New -ignore_err option in ocsp application to stop the server
3712 exiting on the first error in a request.
3715 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
3716 if the server requested one: as stated in TLS 1.0 and SSL 3.0
3720 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
3721 extra data after the compression methods not only for TLS 1.0
3722 but also for SSL 3.0 (as required by the specification).
3723 [Bodo Moeller; problem pointed out by Matthias Loepfe]
3725 *) Change X509_certificate_type() to mark the key as exported/exportable
3726 when it's 512 *bits* long, not 512 bytes.
3729 *) Change AES_cbc_encrypt() so it outputs exact multiple of
3730 blocks during encryption.
3733 *) Various fixes to base64 BIO and non blocking I/O. On write
3734 flushes were not handled properly if the BIO retried. On read
3735 data was not being buffered properly and had various logic bugs.
3736 This also affects blocking I/O when the data being decoded is a
3740 *) Various S/MIME bugfixes and compatibility changes:
3741 output correct application/pkcs7 MIME type if
3742 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
3743 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
3744 of files as .eml work). Correctly handle very long lines in MIME
3748 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
3750 *) Countermeasure against the Klima-Pokorny-Rosa extension of
3751 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
3752 a protocol version number mismatch like a decryption error
3753 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
3756 *) Turn on RSA blinding by default in the default implementation
3757 to avoid a timing attack. Applications that don't want it can call
3758 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
3759 They would be ill-advised to do so in most cases.
3760 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
3762 *) Change RSA blinding code so that it works when the PRNG is not
3763 seeded (in this case, the secret RSA exponent is abused as
3764 an unpredictable seed -- if it is not unpredictable, there
3765 is no point in blinding anyway). Make RSA blinding thread-safe
3766 by remembering the creator's thread ID in rsa->blinding and
3767 having all other threads use local one-time blinding factors
3768 (this requires more computation than sharing rsa->blinding, but
3769 avoids excessive locking; and if an RSA object is not shared
3770 between threads, blinding will still be very fast).
3773 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
3774 ENGINE as defaults for all supported algorithms irrespective of
3775 the 'flags' parameter. 'flags' is now honoured, so applications
3776 should make sure they are passing it correctly.
3779 *) Target "mingw" now allows native Windows code to be generated in
3780 the Cygwin environment as well as with the MinGW compiler.
3783 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
3785 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
3786 via timing by performing a MAC computation even if incorrrect
3787 block cipher padding has been found. This is a countermeasure
3788 against active attacks where the attacker has to distinguish
3789 between bad padding and a MAC verification error. (CVE-2003-0078)
3791 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
3792 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
3793 Martin Vuagnoux (EPFL, Ilion)]
3795 *) Make the no-err option work as intended. The intention with no-err
3796 is not to have the whole error stack handling routines removed from
3797 libcrypto, it's only intended to remove all the function name and
3798 reason texts, thereby removing some of the footprint that may not
3799 be interesting if those errors aren't displayed anyway.
3801 NOTE: it's still possible for any application or module to have it's
3802 own set of error texts inserted. The routines are there, just not
3803 used by default when no-err is given.
3806 *) Add support for FreeBSD on IA64.
3807 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
3809 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
3810 Kerberos function mit_des_cbc_cksum(). Before this change,
3811 the value returned by DES_cbc_cksum() was like the one from
3812 mit_des_cbc_cksum(), except the bytes were swapped.
3813 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
3815 *) Allow an application to disable the automatic SSL chain building.
3816 Before this a rather primitive chain build was always performed in
3817 ssl3_output_cert_chain(): an application had no way to send the
3818 correct chain if the automatic operation produced an incorrect result.
3820 Now the chain builder is disabled if either:
3822 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
3824 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
3826 The reasoning behind this is that an application would not want the
3827 auto chain building to take place if extra chain certificates are
3828 present and it might also want a means of sending no additional
3829 certificates (for example the chain has two certificates and the
3833 *) Add the possibility to build without the ENGINE framework.
3834 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3836 *) Under Win32 gmtime() can return NULL: check return value in
3837 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
3840 *) DSA routines: under certain error conditions uninitialized BN objects
3841 could be freed. Solution: make sure initialization is performed early
3842 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
3843 Nils Larsch <nla@trustcenter.de> via PR#459)
3846 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
3847 checked on reconnect on the client side, therefore session resumption
3848 could still fail with a "ssl session id is different" error. This
3849 behaviour is masked when SSL_OP_ALL is used due to
3850 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
3851 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3852 followup to PR #377.
3855 *) IA-32 assembler support enhancements: unified ELF targets, support
3856 for SCO/Caldera platforms, fix for Cygwin shared build.
3859 *) Add support for FreeBSD on sparc64. As a consequence, support for
3860 FreeBSD on non-x86 processors is separate from x86 processors on
3861 the config script, much like the NetBSD support.
3862 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
3864 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
3866 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
3869 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
3870 code (06) was taken as the first octet of the session ID and the last
3871 octet was ignored consequently. As a result SSLv2 client side session
3872 caching could not have worked due to the session ID mismatch between
3874 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3878 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
3879 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
3883 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
3884 seems that in spite of existing for more than a year, many application
3885 author have done nothing to provide the necessary callbacks, which
3886 means that this particular engine will not work properly anywhere.
3887 This is a very unfortunate situation which forces us, in the name
3888 of usability, to give the hw_ncipher.c a static lock, which is part
3890 NOTE: This is for the 0.9.7 series ONLY. This hack will never
3891 appear in 0.9.8 or later. We EXPECT application authors to have
3892 dealt properly with this when 0.9.8 is released (unless we actually
3893 make such changes in the libcrypto locking code that changes will
3894 have to be made anyway).
3897 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
3898 octets have been read, EOF or an error occurs. Without this change
3899 some truncated ASN1 structures will not produce an error.
3902 *) Disable Heimdal support, since it hasn't been fully implemented.
3903 Still give the possibility to force the use of Heimdal, but with
3904 warnings and a request that patches get sent to openssl-dev.
3907 *) Add the VC-CE target, introduce the WINCE sysname, and add
3908 INSTALL.WCE and appropriate conditionals to make it build.
3909 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3911 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
3912 cygssl-x.y.z.dll, where x, y and z are the major, minor and
3913 edit numbers of the version.
3914 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
3916 *) Introduce safe string copy and catenation functions
3917 (BUF_strlcpy() and BUF_strlcat()).
3918 [Ben Laurie (CHATS) and Richard Levitte]
3920 *) Avoid using fixed-size buffers for one-line DNs.
3921 [Ben Laurie (CHATS)]
3923 *) Add BUF_MEM_grow_clean() to avoid information leakage when
3924 resizing buffers containing secrets, and use where appropriate.
3925 [Ben Laurie (CHATS)]
3927 *) Avoid using fixed size buffers for configuration file location.
3928 [Ben Laurie (CHATS)]
3930 *) Avoid filename truncation for various CA files.
3931 [Ben Laurie (CHATS)]
3933 *) Use sizeof in preference to magic numbers.
3934 [Ben Laurie (CHATS)]
3936 *) Avoid filename truncation in cert requests.
3937 [Ben Laurie (CHATS)]
3939 *) Add assertions to check for (supposedly impossible) buffer
3941 [Ben Laurie (CHATS)]
3943 *) Don't cache truncated DNS entries in the local cache (this could
3944 potentially lead to a spoofing attack).
3945 [Ben Laurie (CHATS)]
3947 *) Fix various buffers to be large enough for hex/decimal
3948 representations in a platform independent manner.
3949 [Ben Laurie (CHATS)]
3951 *) Add CRYPTO_realloc_clean() to avoid information leakage when
3952 resizing buffers containing secrets, and use where appropriate.
3953 [Ben Laurie (CHATS)]
3955 *) Add BIO_indent() to avoid much slightly worrying code to do
3957 [Ben Laurie (CHATS)]
3959 *) Convert sprintf()/BIO_puts() to BIO_printf().
3960 [Ben Laurie (CHATS)]
3962 *) buffer_gets() could terminate with the buffer only half
3964 [Ben Laurie (CHATS)]
3966 *) Add assertions to prevent user-supplied crypto functions from
3967 overflowing internal buffers by having large block sizes, etc.
3968 [Ben Laurie (CHATS)]
3970 *) New OPENSSL_assert() macro (similar to assert(), but enabled
3972 [Ben Laurie (CHATS)]
3974 *) Eliminate unused copy of key in RC4.
3975 [Ben Laurie (CHATS)]
3977 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
3978 [Ben Laurie (CHATS)]
3980 *) Fix off-by-one error in EGD path.
3981 [Ben Laurie (CHATS)]
3983 *) If RANDFILE path is too long, ignore instead of truncating.
3984 [Ben Laurie (CHATS)]
3986 *) Eliminate unused and incorrectly sized X.509 structure
3988 [Ben Laurie (CHATS)]
3990 *) Eliminate unused and dangerous function knumber().
3991 [Ben Laurie (CHATS)]
3993 *) Eliminate unused and dangerous structure, KSSL_ERR.
3994 [Ben Laurie (CHATS)]
3996 *) Protect against overlong session ID context length in an encoded
3997 session object. Since these are local, this does not appear to be
3999 [Ben Laurie (CHATS)]
4001 *) Change from security patch (see 0.9.6e below) that did not affect
4002 the 0.9.6 release series:
4004 Remote buffer overflow in SSL3 protocol - an attacker could
4005 supply an oversized master key in Kerberos-enabled versions.
4007 [Ben Laurie (CHATS)]
4009 *) Change the SSL kerb5 codes to match RFC 2712.
4012 *) Make -nameopt work fully for req and add -reqopt switch.
4013 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
4015 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
4016 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
4018 *) Make sure tests can be performed even if the corresponding algorithms
4019 have been removed entirely. This was also the last step to make
4020 OpenSSL compilable with DJGPP under all reasonable conditions.
4021 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
4023 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
4024 to allow version independent disabling of normally unselected ciphers,
4025 which may be activated as a side-effect of selecting a single cipher.
4027 (E.g., cipher list string "RSA" enables ciphersuites that are left
4028 out of "ALL" because they do not provide symmetric encryption.
4029 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
4030 [Lutz Jaenicke, Bodo Moeller]
4032 *) Add appropriate support for separate platform-dependent build
4033 directories. The recommended way to make a platform-dependent
4034 build directory is the following (tested on Linux), maybe with
4037 # Place yourself outside of the OpenSSL source tree. In
4038 # this example, the environment variable OPENSSL_SOURCE
4039 # is assumed to contain the absolute OpenSSL source directory.
4040 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
4041 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
4042 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
4043 mkdir -p `dirname $F`
4044 ln -s $OPENSSL_SOURCE/$F $F
4047 To be absolutely sure not to disturb the source tree, a "make clean"
4048 is a good thing. If it isn't successfull, don't worry about it,
4049 it probably means the source directory is very clean.
4052 *) Make sure any ENGINE control commands make local copies of string
4053 pointers passed to them whenever necessary. Otherwise it is possible
4054 the caller may have overwritten (or deallocated) the original string
4055 data when a later ENGINE operation tries to use the stored values.
4056 [Götz Babin-Ebell <babinebell@trustcenter.de>]
4058 *) Improve diagnostics in file reading and command-line digests.
4059 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
4061 *) Add AES modes CFB and OFB to the object database. Correct an
4062 error in AES-CFB decryption.
4065 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
4066 allows existing EVP_CIPHER_CTX structures to be reused after
4067 calling EVP_*Final(). This behaviour is used by encryption
4068 BIOs and some applications. This has the side effect that
4069 applications must explicitly clean up cipher contexts with
4070 EVP_CIPHER_CTX_cleanup() or they will leak memory.
4073 *) Check the values of dna and dnb in bn_mul_recursive before calling
4074 bn_mul_comba (a non zero value means the a or b arrays do not contain
4075 n2 elements) and fallback to bn_mul_normal if either is not zero.
4078 *) Fix escaping of non-ASCII characters when using the -subj option
4079 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
4082 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
4083 form for "surname", serialNumber has no short form.
4084 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
4085 therefore remove "mail" short name for "internet 7".
4086 The OID for unique identifiers in X509 certificates is
4087 x500UniqueIdentifier, not uniqueIdentifier.
4088 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
4091 *) Add an "init" command to the ENGINE config module and auto initialize
4092 ENGINEs. Without any "init" command the ENGINE will be initialized
4093 after all ctrl commands have been executed on it. If init=1 the
4094 ENGINE is initailized at that point (ctrls before that point are run
4095 on the uninitialized ENGINE and after on the initialized one). If
4096 init=0 then the ENGINE will not be iniatialized at all.
4099 *) Fix the 'app_verify_callback' interface so that the user-defined
4100 argument is actually passed to the callback: In the
4101 SSL_CTX_set_cert_verify_callback() prototype, the callback
4102 declaration has been changed from
4105 int (*cb)(X509_STORE_CTX *,void *);
4106 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
4107 i=s->ctx->app_verify_callback(&ctx)
4108 has been changed into
4109 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
4111 To update applications using SSL_CTX_set_cert_verify_callback(),
4112 a dummy argument can be added to their callback functions.
4113 [D. K. Smetters <smetters@parc.xerox.com>]
4115 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
4116 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
4118 *) Add and OPENSSL_LOAD_CONF define which will cause
4119 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
4120 This allows older applications to transparently support certain
4121 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
4122 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
4123 load the config file and OPENSSL_add_all_algorithms_conf() which will
4124 always load it have also been added.
4127 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
4128 Adjust NIDs and EVP layer.
4129 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
4131 *) Config modules support in openssl utility.
4133 Most commands now load modules from the config file,
4134 though in a few (such as version) this isn't done
4135 because it couldn't be used for anything.
4137 In the case of ca and req the config file used is
4138 the same as the utility itself: that is the -config
4139 command line option can be used to specify an
4143 *) Move default behaviour from OPENSSL_config(). If appname is NULL
4144 use "openssl_conf" if filename is NULL use default openssl config file.
4147 *) Add an argument to OPENSSL_config() to allow the use of an alternative
4148 config section name. Add a new flag to tolerate a missing config file
4149 and move code to CONF_modules_load_file().
4152 *) Support for crypto accelerator cards from Accelerated Encryption
4153 Processing, www.aep.ie. (Use engine 'aep')
4154 The support was copied from 0.9.6c [engine] and adapted/corrected
4155 to work with the new engine framework.
4156 [AEP Inc. and Richard Levitte]
4158 *) Support for SureWare crypto accelerator cards from Baltimore
4159 Technologies. (Use engine 'sureware')
4160 The support was copied from 0.9.6c [engine] and adapted
4161 to work with the new engine framework.
4164 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
4165 make the newer ENGINE framework commands for the CHIL engine work.
4166 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
4168 *) Make it possible to produce shared libraries on ReliantUNIX.
4169 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
4171 *) Add the configuration target debug-linux-ppro.
4172 Make 'openssl rsa' use the general key loading routines
4173 implemented in apps.c, and make those routines able to
4174 handle the key format FORMAT_NETSCAPE and the variant
4176 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
4178 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
4179 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
4181 *) Add -keyform to rsautl, and document -engine.
4182 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
4184 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
4185 BIO_R_NO_SUCH_FILE error code rather than the generic
4186 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
4189 *) Add new functions
4191 ERR_peek_last_error_line
4192 ERR_peek_last_error_line_data.
4193 These are similar to
4196 ERR_peek_error_line_data,
4197 but report on the latest error recorded rather than the first one
4198 still in the error queue.
4199 [Ben Laurie, Bodo Moeller]
4201 *) default_algorithms option in ENGINE config module. This allows things
4203 default_algorithms = ALL
4204 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
4207 *) Prelminary ENGINE config module.
4210 *) New experimental application configuration code.
4213 *) Change the AES code to follow the same name structure as all other
4214 symmetric ciphers, and behave the same way. Move everything to
4215 the directory crypto/aes, thereby obsoleting crypto/rijndael.
4216 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
4218 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
4219 [Ben Laurie and Theo de Raadt]
4221 *) Add option to output public keys in req command.
4222 [Massimiliano Pala madwolf@openca.org]
4224 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
4225 (up to about 10% better than before for P-192 and P-224).
4228 *) New functions/macros
4230 SSL_CTX_set_msg_callback(ctx, cb)
4231 SSL_CTX_set_msg_callback_arg(ctx, arg)
4232 SSL_set_msg_callback(ssl, cb)
4233 SSL_set_msg_callback_arg(ssl, arg)
4235 to request calling a callback function
4237 void cb(int write_p, int version, int content_type,
4238 const void *buf, size_t len, SSL *ssl, void *arg)
4240 whenever a protocol message has been completely received
4241 (write_p == 0) or sent (write_p == 1). Here 'version' is the
4242 protocol version according to which the SSL library interprets
4243 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
4244 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
4245 the content type as defined in the SSL 3.0/TLS 1.0 protocol
4246 specification (change_cipher_spec(20), alert(21), handshake(22)).
4247 'buf' and 'len' point to the actual message, 'ssl' to the
4248 SSL object, and 'arg' is the application-defined value set by
4249 SSL[_CTX]_set_msg_callback_arg().
4251 'openssl s_client' and 'openssl s_server' have new '-msg' options
4252 to enable a callback that displays all protocol messages.
4255 *) Change the shared library support so shared libraries are built as
4256 soon as the corresponding static library is finished, and thereby get
4257 openssl and the test programs linked against the shared library.
4258 This still only happens when the keyword "shard" has been given to
4259 the configuration scripts.
4261 NOTE: shared library support is still an experimental thing, and
4262 backward binary compatibility is still not guaranteed.
4263 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
4265 *) Add support for Subject Information Access extension.
4266 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
4268 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
4269 additional bytes when new memory had to be allocated, not just
4270 when reusing an existing buffer.
4273 *) New command line and configuration option 'utf8' for the req command.
4274 This allows field values to be specified as UTF8 strings.
4277 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
4278 runs for the former and machine-readable output for the latter.
4281 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
4282 of the e-mail address in the DN (i.e., it will go into a certificate
4283 extension only). The new configuration file option 'email_in_dn = no'
4284 has the same effect.
4285 [Massimiliano Pala madwolf@openca.org]
4287 *) Change all functions with names starting with des_ to be starting
4288 with DES_ instead. Add wrappers that are compatible with libdes,
4289 but are named _ossl_old_des_*. Finally, add macros that map the
4290 des_* symbols to the corresponding _ossl_old_des_* if libdes
4291 compatibility is desired. If OpenSSL 0.9.6c compatibility is
4292 desired, the des_* symbols will be mapped to DES_*, with one
4295 Since we provide two compatibility mappings, the user needs to
4296 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
4297 compatibility is desired. The default (i.e., when that macro
4298 isn't defined) is OpenSSL 0.9.6c compatibility.
4300 There are also macros that enable and disable the support of old
4301 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
4302 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
4303 are defined, the default will apply: to support the old des routines.
4305 In either case, one must include openssl/des.h to get the correct
4306 definitions. Do not try to just include openssl/des_old.h, that
4309 NOTE: This is a major break of an old API into a new one. Software
4310 authors are encouraged to switch to the DES_ style functions. Some
4311 time in the future, des_old.h and the libdes compatibility functions
4312 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
4313 default), and then completely removed.
4316 *) Test for certificates which contain unsupported critical extensions.
4317 If such a certificate is found during a verify operation it is
4318 rejected by default: this behaviour can be overridden by either
4319 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
4320 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
4321 X509_supported_extension() has also been added which returns 1 if a
4322 particular extension is supported.
4325 *) Modify the behaviour of EVP cipher functions in similar way to digests
4326 to retain compatibility with existing code.
4329 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
4330 compatibility with existing code. In particular the 'ctx' parameter does
4331 not have to be to be initialized before the call to EVP_DigestInit() and
4332 it is tidied up after a call to EVP_DigestFinal(). New function
4333 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
4334 EVP_MD_CTX_copy() changed to not require the destination to be
4335 initialized valid and new function EVP_MD_CTX_copy_ex() added which
4336 requires the destination to be valid.
4338 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
4339 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
4342 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
4343 so that complete 'Handshake' protocol structures are kept in memory
4344 instead of overwriting 'msg_type' and 'length' with 'body' data.
4347 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
4348 [Massimo Santin via Richard Levitte]
4350 *) Major restructuring to the underlying ENGINE code. This includes
4351 reduction of linker bloat, separation of pure "ENGINE" manipulation
4352 (initialisation, etc) from functionality dealing with implementations
4353 of specific crypto iterfaces. This change also introduces integrated
4354 support for symmetric ciphers and digest implementations - so ENGINEs
4355 can now accelerate these by providing EVP_CIPHER and EVP_MD
4356 implementations of their own. This is detailed in crypto/engine/README
4357 as it couldn't be adequately described here. However, there are a few
4358 API changes worth noting - some RSA, DSA, DH, and RAND functions that
4359 were changed in the original introduction of ENGINE code have now
4360 reverted back - the hooking from this code to ENGINE is now a good
4361 deal more passive and at run-time, operations deal directly with
4362 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
4363 dereferencing through an ENGINE pointer any more. Also, the ENGINE
4364 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
4365 they were not being used by the framework as there is no concept of a
4366 BIGNUM_METHOD and they could not be generalised to the new
4367 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
4368 ENGINE_cpy() has been removed as it cannot be consistently defined in
4372 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
4375 *) Change mkdef.pl to sort symbols that get the same entry number,
4376 and make sure the automatically generated functions ERR_load_*
4377 become part of libeay.num as well.
4380 *) New function SSL_renegotiate_pending(). This returns true once
4381 renegotiation has been requested (either SSL_renegotiate() call
4382 or HelloRequest/ClientHello receveived from the peer) and becomes
4383 false once a handshake has been completed.
4384 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
4385 sends a HelloRequest, but does not ensure that a handshake takes
4386 place. SSL_renegotiate_pending() is useful for checking if the
4387 client has followed the request.)
4390 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
4391 By default, clients may request session resumption even during
4392 renegotiation (if session ID contexts permit); with this option,
4393 session resumption is possible only in the first handshake.
4395 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
4396 more bits available for options that should not be part of
4397 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
4400 *) Add some demos for certificate and certificate request creation.
4403 *) Make maximum certificate chain size accepted from the peer application
4404 settable (SSL*_get/set_max_cert_list()), as proposed by
4405 "Douglas E. Engert" <deengert@anl.gov>.
4408 *) Add support for shared libraries for Unixware-7
4409 (Boyd Lynn Gerber <gerberb@zenez.com>).
4412 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
4413 be done prior to destruction. Use this to unload error strings from
4414 ENGINEs that load their own error strings. NB: This adds two new API
4415 functions to "get" and "set" this destroy handler in an ENGINE.
projects / openssl.git / blob