5 Changes between 1.0.1 and 1.1.0 [xx XXX xxxx]
7 *) Transparently support X9.42 DH parameters when calling
8 PEM_read_bio_DHparameters. This means existing applications can handle
9 the new parameter format automatically.
12 *) Initial experimental support for X9.42 DH parameter format: mainly
13 to support use of 'q' parameter for RFC5114 parameters.
16 *) Add DH parameters from RFC5114 including test data to dhtest.
19 *) Update fips_test_suite to support multiple command line options. New
20 test to induce all self test errors in sequence and check expected
24 *) Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and
25 sign or verify all in one operation.
28 *) Add fips_algvs: a multicall fips utility incorporaing all the algorithm
29 test programs and fips_test_suite. Includes functionality to parse
30 the minimal script output of fipsalgest.pl directly.
33 *) Add authorisation parameter to FIPS_module_mode_set().
36 *) Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves.
39 *) Use separate DRBG fields for internal and external flags. New function
40 FIPS_drbg_health_check() to perform on demand health checking. Add
41 generation tests to fips_test_suite with reduced health check interval to
42 demonstrate periodic health checking. Add "nodh" option to
43 fips_test_suite to skip very slow DH test.
46 *) New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers
50 *) More extensive health check for DRBG checking many more failure modes.
51 New function FIPS_selftest_drbg_all() to handle every possible DRBG
52 combination: call this in fips_test_suite.
55 *) Add support for Dual EC DRBG from SP800-90. Update DRBG algorithm test
56 and POST to handle Dual EC cases.
59 *) Add support for canonical generation of DSA parameter 'g'. See
62 *) Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
63 POST to handle HMAC cases.
66 *) Add functions FIPS_module_version() and FIPS_module_version_text()
67 to return numberical and string versions of the FIPS module number.
70 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
71 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implmeneted
72 outside the validated module in the FIPS capable OpenSSL.
75 *) Minor change to DRBG entropy callback semantics. In some cases
76 there is no mutiple of the block length between min_len and
77 max_len. Allow the callback to return more than max_len bytes
78 of entropy but discard any extra: it is the callback's responsibility
79 to ensure that the extra data discarded does not impact the
80 requested amount of entropy.
83 *) Add PRNG security strength checks to RSA, DSA and ECDSA using
84 information in FIPS186-3, SP800-57 and SP800-131A.
87 *) CCM support via EVP. Interface is very similar to GCM case except we
88 must supply all data in one chunk (i.e. no update, final) and the
89 message length must be supplied if AAD is used. Add algorithm test
93 *) Initial version of POST overhaul. Add POST callback to allow the status
94 of POST to be monitored and/or failures induced. Modify fips_test_suite
95 to use callback. Always run all selftests even if one fails.
98 *) XTS support including algorithm test driver in the fips_gcmtest program.
99 Note: this does increase the maximum key length from 32 to 64 bytes but
100 there should be no binary compatibility issues as existing applications
101 will never use XTS mode.
104 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
105 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
106 performs algorithm blocking for unapproved PRNG types. Also do not
107 set PRNG type in FIPS_mode_set(): leave this to the application.
108 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
109 the standard OpenSSL PRNG: set additional data to a date time vector.
112 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
113 This shouldn't present any incompatibility problems because applications
114 shouldn't be using these directly and any that are will need to rethink
115 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
118 *) Extensive self tests and health checking required by SP800-90 DRBG.
119 Remove strength parameter from FIPS_drbg_instantiate and always
120 instantiate at maximum supported strength.
123 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
126 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
129 *) New function DH_compute_key_padded() to compute a DH key and pad with
130 leading zeroes if needed: this complies with SP800-56A et al.
133 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
134 anything, incomplete, subject to change and largely untested at present.
137 *) Modify fipscanisteronly build option to only build the necessary object
138 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
141 *) Add experimental option FIPSSYMS to give all symbols in
142 fipscanister.o and FIPS or fips prefix. This will avoid
143 conflicts with future versions of OpenSSL. Add perl script
144 util/fipsas.pl to preprocess assembly language source files
145 and rename any affected symbols.
148 *) Add selftest checks and algorithm block of non-fips algorithms in
149 FIPS mode. Remove DES2 from selftests.
152 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
153 return internal method without any ENGINE dependencies. Add new
154 tiny fips sign and verify functions.
157 *) New build option no-ec2m to disable characteristic 2 code.
160 *) New build option "fipscanisteronly". This only builds fipscanister.o
161 and (currently) associated fips utilities. Uses the file Makefile.fips
162 instead of Makefile.org as the prototype.
165 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
166 Update fips_gcmtest to use IV generator.
169 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
170 setting output buffer to NULL. The *Final function must be
171 called although it will not retrieve any additional data. The tag
172 can be set or retrieved with a ctrl. The IV length is by default 12
173 bytes (96 bits) but can be set to an alternative value. If the IV
174 length exceeds the maximum IV length (currently 16 bytes) it cannot be
178 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
179 underlying do_cipher function handles all cipher semantics itself
180 including padding and finalisation. This is useful if (for example)
181 an ENGINE cipher handles block padding itself. The behaviour of
182 do_cipher is subtly changed if this flag is set: the return value
183 is the number of characters written to the output buffer (zero is
184 no longer an error code) or a negative error code. Also if the
185 input buffer is NULL and length 0 finalisation should be performed.
188 *) If a candidate issuer certificate is already part of the constructed
189 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
192 *) Improve forward-security support: add functions
194 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
195 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
197 for use by SSL/TLS servers; the callback function will be called whenever a
198 new session is created, and gets to decide whether the session may be
199 cached to make it resumable (return 0) or not (return 1). (As by the
200 SSL/TLS protocol specifications, the session_id sent by the server will be
201 empty to indicate that the session is not resumable; also, the server will
202 not generate RFC 4507 (RFC 5077) session tickets.)
204 A simple reasonable callback implementation is to return is_forward_secure.
205 This parameter will be set to 1 or 0 depending on the ciphersuite selected
206 by the SSL/TLS server library, indicating whether it can provide forward
208 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
210 *) New function OPENSSL_gmtime_diff to find the difference in days
211 and seconds between two tm structures. This will be used to provide
212 additional functionality for ASN1_TIME.
215 *) Add -trusted_first option which attempts to find certificates in the
216 trusted store even if an untrusted chain is also supplied.
219 *) Initial experimental support for explicitly trusted non-root CAs.
220 OpenSSL still tries to build a complete chain to a root but if an
221 intermediate CA has a trust setting included that is used. The first
222 setting is used: whether to trust or reject.
225 *) New -verify_name option in command line utilities to set verification
229 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
230 Add CMAC pkey methods.
233 *) Experimental regnegotiation in s_server -www mode. If the client
234 browses /reneg connection is renegotiated. If /renegcert it is
235 renegotiated requesting a certificate.
238 *) Add an "external" session cache for debugging purposes to s_server. This
239 should help trace issues which normally are only apparent in deployed
240 multi-process servers.
243 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
244 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
245 BIO_set_cipher() and some obscure PEM functions were changed so they
246 can now return an error. The RAND changes required a change to the
247 RAND_METHOD structure.
250 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
251 a gcc attribute to warn if the result of a function is ignored. This
252 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
253 whose return value is often ignored.
256 Changes between 1.0.0f and 1.0.1 [xx XXX xxxx]
258 *) Add support for TLS/DTLS heartbeats.
259 [Robin Seggelmann <seggelmann@fh-muenster.de>]
261 *) Add support for SCTP.
262 [Robin Seggelmann <seggelmann@fh-muenster.de>]
264 *) Improved PRNG seeding for VOS.
265 [Paul Green <Paul.Green@stratus.com>]
267 *) Extensive assembler packs updates, most notably:
269 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
270 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
271 - x86_64: bit-sliced AES implementation;
272 - ARM: NEON support, contemporary platforms optimizations;
273 - s390x: z196 support;
274 - *: GHASH and GF(2^m) multiplication implementations;
278 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
279 (removal of unnecessary code)
280 [Peter Sylvester <peter.sylvester@edelweb.fr>]
282 *) Add -attime option to openssl utilities.
283 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
285 *) Add TLS key material exporter from RFC 5705.
288 *) Add DTLS-SRTP negotiation from RFC 5764.
291 *) Add Next Protocol Negotiation,
292 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
293 disabled with a no-npn flag to config or Configure. Code donated
295 [Adam Langley <agl@google.com> and Ben Laurie]
297 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
298 NIST-P256, NIST-P521, with constant-time single point multiplication on
299 typical inputs. Compiler support for the nonstandard type __uint128_t is
300 required to use this (present in gcc 4.4 and later, for 64-bit builds).
301 Code made available under Apache License version 2.0.
303 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
304 line to include this in your build of OpenSSL, and run "make depend" (or
305 "make update"). This enables the following EC_METHODs:
307 EC_GFp_nistp224_method()
308 EC_GFp_nistp256_method()
309 EC_GFp_nistp521_method()
311 EC_GROUP_new_by_curve_name() will automatically use these (while
312 EC_GROUP_new_curve_GFp() currently prefers the more flexible
314 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
316 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
317 all platforms. Move ssize_t definition from e_os.h to the public
318 header file e_os2.h as it now appears in public header file cms.h
321 *) New -sigopt option to the ca, req and x509 utilities. Additional
322 signature parameters can be passed using this option and in
326 *) Add RSA PSS signing function. This will generate and set the
327 appropriate AlgorithmIdentifiers for PSS based on those in the
328 corresponding EVP_MD_CTX structure. No application support yet.
331 *) Support for companion algorithm specific ASN1 signing routines.
332 New function ASN1_item_sign_ctx() signs a pre-initialised
333 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
334 the appropriate parameters.
337 *) Add new algorithm specific ASN1 verification initialisation function
338 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
339 handling will be the same no matter what EVP_PKEY_METHOD is used.
340 Add a PSS handler to support verification of PSS signatures: checked
341 against a number of sample certificates.
344 *) Add signature printing for PSS. Add PSS OIDs.
345 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
347 *) Add algorithm specific signature printing. An individual ASN1 method
348 can now print out signatures instead of the standard hex dump.
350 More complex signatures (e.g. PSS) can print out more meaningful
351 information. Include DSA version that prints out the signature
355 *) Password based recipient info support for CMS library: implementing
359 *) Split password based encryption into PBES2 and PBKDF2 functions. This
360 neatly separates the code into cipher and PBE sections and is required
361 for some algorithms that split PBES2 into separate pieces (such as
365 *) Session-handling fixes:
366 - Fix handling of connections that are resuming with a session ID,
367 but also support Session Tickets.
368 - Fix a bug that suppressed issuing of a new ticket if the client
369 presented a ticket with an expired session.
370 - Try to set the ticket lifetime hint to something reasonable.
371 - Make tickets shorter by excluding irrelevant information.
372 - On the client side, don't ignore renewed tickets.
373 [Adam Langley, Bodo Moeller (Google)]
375 *) Fix PSK session representation.
378 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
380 This work was sponsored by Intel.
383 *) Add GCM support to TLS library. Some custom code is needed to split
384 the IV between the fixed (from PRF) and explicit (from TLS record)
385 portions. This adds all GCM ciphersuites supported by RFC5288 and
386 RFC5289. Generalise some AES* cipherstrings to inlclude GCM and
387 add a special AESGCM string for GCM only.
390 *) Expand range of ctrls for AES GCM. Permit setting invocation
391 field on decrypt and retrieval of invocation field only on encrypt.
394 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
395 As required by RFC5289 these ciphersuites cannot be used if for
396 versions of TLS earlier than 1.2.
399 *) For FIPS capable OpenSSL interpret a NULL default public key method
400 as unset and return the appopriate default but do *not* set the default.
401 This means we can return the appopriate method in applications that
402 swicth between FIPS and non-FIPS modes.
405 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
406 ENGINE is used then we cannot handle that in the FIPS module so we
407 keep original code iff non-FIPS operations are allowed.
410 *) Add -attime option to openssl verify.
411 [Peter Eckersley <pde@eff.org> and Ben Laurie]
413 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
416 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
417 FIPS EC methods unconditionally for now.
420 *) New build option no-ec2m to disable characteristic 2 code.
423 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
424 all cases can be covered as some introduce binary incompatibilities.
427 *) Redirect RSA operations to FIPS module including keygen,
428 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
431 *) Add similar low level API blocking to ciphers.
434 *) Low level digest APIs are not approved in FIPS mode: any attempt
435 to use these will cause a fatal error. Applications that *really* want
436 to use them can use the private_* version instead.
439 *) Redirect cipher operations to FIPS module for FIPS builds.
442 *) Redirect digest operations to FIPS module for FIPS builds.
445 *) Update build system to add "fips" flag which will link in fipscanister.o
446 for static and shared library builds embedding a signature if needed.
449 *) Output TLS supported curves in preference order instead of numerical
450 order. This is currently hardcoded for the highest order curves first.
451 This should be configurable so applications can judge speed vs strength.
454 *) Add TLS v1.2 server support for client authentication.
457 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
461 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
462 FIPS modules versions.
465 *) Add TLS v1.2 client side support for client authentication. Keep cache
466 of handshake records longer as we don't know the hash algorithm to use
467 until after the certificate request message is received.
470 *) Initial TLS v1.2 client support. Add a default signature algorithms
471 extension including all the algorithms we support. Parse new signature
472 format in client key exchange. Relax some ECC signing restrictions for
473 TLS v1.2 as indicated in RFC5246.
476 *) Add server support for TLS v1.2 signature algorithms extension. Switch
477 to new signature format when needed using client digest preference.
478 All server ciphersuites should now work correctly in TLS v1.2. No client
479 support yet and no support for client certificates.
482 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
483 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
484 ciphersuites. At present only RSA key exchange ciphersuites work with
485 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
486 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
487 and version checking.
490 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
491 with this defined it will not be affected by any changes to ssl internal
492 structures. Add several utility functions to allow openssl application
493 to work with OPENSSL_NO_SSL_INTERN defined.
497 [Tom Wu <tjw@cs.stanford.edu> and Ben Laurie]
499 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
502 *) Permit abbreviated handshakes when renegotiating using the function
503 SSL_renegotiate_abbreviated().
504 [Robin Seggelmann <seggelmann@fh-muenster.de>]
506 *) Add call to ENGINE_register_all_complete() to
507 ENGINE_load_builtin_engines(), so some implementations get used
508 automatically instead of needing explicit application support.
511 *) Add support for TLS key exporter as described in RFC5705.
512 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
514 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
515 a few changes are required:
517 Add SSL_OP_NO_TLSv1_1 flag.
519 Update version checking logic to handle version 1.1.
520 Add explicit IV handling (ported from DTLS code).
521 Add command line options to s_client/s_server.
524 Changes between 1.0.0e and 1.0.0f [xx XXX xxxx]
526 *) Only allow one SGC handshake restart for SSL/TLS. (CVE-2011-4619)
527 [Adam Langley (Google)]
529 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
530 [Andrey Kulikov <amdeich@gmail.com>]
532 *) Prevent malformed RFC3779 data triggering an assertion failure.
533 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
534 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
535 [Rob Austein <sra@hactrn.net>]
537 *) Fix ssl_ciph.c set-up race.
538 [Adam Langley (Google)]
540 *) Fix spurious failures in ecdsatest.c.
541 [Emilia Käsper (Google)]
543 *) Fix the BIO_f_buffer() implementation (which was mixing different
544 interpretations of the '..._len' fields).
545 [Adam Langley (Google)]
547 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
548 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
549 threads won't reuse the same blinding coefficients.
551 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
552 lock to call BN_BLINDING_invert_ex, and avoids one use of
553 BN_BLINDING_update for each BN_BLINDING structure (previously,
554 the last update always remained unused).
555 [Emilia Käsper (Google)]
557 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
558 [Bob Buckholz (Google)]
560 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
562 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
563 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
564 [Kaspar Brand <ossl@velox.ch>]
566 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
567 for multi-threaded use of ECDH. (CVE-2011-3210)
568 [Adam Langley (Google)]
570 *) Fix x509_name_ex_d2i memory leak on bad inputs.
573 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
574 signature public key algorithm by using OID xref utilities instead.
575 Before this you could only use some ECC ciphersuites with SHA1 only.
578 *) Add protection against ECDSA timing attacks as mentioned in the paper
579 by Billy Bob Brumley and Nicola Tuveri, see:
581 http://eprint.iacr.org/2011/232.pdf
583 [Billy Bob Brumley and Nicola Tuveri]
585 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
587 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
588 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
590 *) Fix bug in string printing code: if *any* escaping is enabled we must
591 escape the escape character (backslash) or the resulting string is
595 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
597 *) Disable code workaround for ancient and obsolete Netscape browsers
598 and servers: an attacker can use it in a ciphersuite downgrade attack.
599 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
602 *) Fixed J-PAKE implementation error, originally discovered by
603 Sebastien Martini, further info and confirmation from Stefan
604 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
607 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
609 *) Fix extension code to avoid race conditions which can result in a buffer
610 overrun vulnerability: resumed sessions must not be modified as they can
611 be shared by multiple threads. CVE-2010-3864
614 *) Fix WIN32 build system to correctly link an ENGINE directory into
618 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
620 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
622 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
624 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
626 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
627 context. The operation can be customised via the ctrl mechanism in
628 case ENGINEs want to include additional functionality.
631 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
634 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
635 output hashes compatible with older versions of OpenSSL.
636 [Willy Weisz <weisz@vcpc.univie.ac.at>]
638 *) Fix compression algorithm handling: if resuming a session use the
639 compression algorithm of the resumed session instead of determining
640 it from client hello again. Don't allow server to change algorithm.
643 *) Add load_crls() function to apps tidying load_certs() too. Add option
644 to verify utility to allow additional CRLs to be included.
647 *) Update OCSP request code to permit adding custom headers to the request:
648 some responders need this.
651 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
653 [Julia Lawall <julia@diku.dk>]
655 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
656 needlessly dereferenced structures, used obsolete functions and
657 didn't handle all updated verify codes correctly.
660 *) Disable MD2 in the default configuration.
663 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
664 indicate the initial BIO being pushed or popped. This makes it possible
665 to determine whether the BIO is the one explicitly called or as a result
666 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
667 it handles reference counts correctly and doesn't zero out the I/O bio
668 when it is not being explicitly popped. WARNING: applications which
669 included workarounds for the old buggy behaviour will need to be modified
670 or they could free up already freed BIOs.
673 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
674 renaming to all platforms (within the 0.9.8 branch, this was
675 done conditionally on Netware platforms to avoid a name clash).
676 [Guenter <lists@gknw.net>]
678 *) Add ECDHE and PSK support to DTLS.
679 [Michael Tuexen <tuexen@fh-muenster.de>]
681 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
685 *) Add "missing" function EVP_MD_flags() (without this the only way to
686 retrieve a digest flags is by accessing the structure directly. Update
687 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
688 or cipher is registered as in the "from" argument. Print out all
689 registered digests in the dgst usage message instead of manually
690 attempting to work them out.
693 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
694 this allows the use of compression and extensions. Change default cipher
695 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
696 by default unless an application cipher string requests it.
699 *) Alter match criteria in PKCS12_parse(). It used to try to use local
700 key ids to find matching certificates and keys but some PKCS#12 files
701 don't follow the (somewhat unwritten) rules and this strategy fails.
702 Now just gather all certificates together and the first private key
703 then look for the first certificate that matches the key.
706 *) Support use of registered digest and cipher names for dgst and cipher
707 commands instead of having to add each one as a special case. So now
714 openssl dgst -sha256 foo
716 and this works for ENGINE based algorithms too.
720 *) Update Gost ENGINE to support parameter files.
721 [Victor B. Wagner <vitus@cryptocom.ru>]
723 *) Support GeneralizedTime in ca utility.
724 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
726 *) Enhance the hash format used for certificate directory links. The new
727 form uses the canonical encoding (meaning equivalent names will work
728 even if they aren't identical) and uses SHA1 instead of MD5. This form
729 is incompatible with the older format and as a result c_rehash should
730 be used to rebuild symbolic links.
733 *) Make PKCS#8 the default write format for private keys, replacing the
734 traditional format. This form is standardised, more secure and doesn't
735 include an implicit MD5 dependency.
738 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
739 committed to OpenSSL should pass this lot as a minimum.
742 *) Add session ticket override functionality for use by EAP-FAST.
743 [Jouni Malinen <j@w1.fi>]
745 *) Modify HMAC functions to return a value. Since these can be implemented
746 in an ENGINE errors can occur.
749 *) Type-checked OBJ_bsearch_ex.
752 *) Type-checked OBJ_bsearch. Also some constification necessitated
753 by type-checking. Still to come: TXT_DB, bsearch(?),
754 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
758 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
759 seconds to a tm structure directly, instead of going through OS
760 specific date routines. This avoids any issues with OS routines such
761 as the year 2038 bug. New *_adj() functions for ASN1 time structures
762 and X509_time_adj_ex() to cover the extended range. The existing
763 X509_time_adj() is still usable and will no longer have any date issues.
766 *) Delta CRL support. New use deltas option which will attempt to locate
767 and search any appropriate delta CRLs available.
769 This work was sponsored by Google.
772 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
773 code and add additional score elements. Validate alternate CRL paths
774 as part of the CRL checking and indicate a new error "CRL path validation
775 error" in this case. Applications wanting additional details can use
776 the verify callback and check the new "parent" field. If this is not
777 NULL CRL path validation is taking place. Existing applications wont
778 see this because it requires extended CRL support which is off by
781 This work was sponsored by Google.
784 *) Support for freshest CRL extension.
786 This work was sponsored by Google.
789 *) Initial indirect CRL support. Currently only supported in the CRLs
790 passed directly and not via lookup. Process certificate issuer
791 CRL entry extension and lookup CRL entries by bother issuer name
792 and serial number. Check and process CRL issuer entry in IDP extension.
794 This work was sponsored by Google.
797 *) Add support for distinct certificate and CRL paths. The CRL issuer
798 certificate is validated separately in this case. Only enabled if
799 an extended CRL support flag is set: this flag will enable additional
800 CRL functionality in future.
802 This work was sponsored by Google.
805 *) Add support for policy mappings extension.
807 This work was sponsored by Google.
810 *) Fixes to pathlength constraint, self issued certificate handling,
811 policy processing to align with RFC3280 and PKITS tests.
813 This work was sponsored by Google.
816 *) Support for name constraints certificate extension. DN, email, DNS
817 and URI types are currently supported.
819 This work was sponsored by Google.
822 *) To cater for systems that provide a pointer-based thread ID rather
823 than numeric, deprecate the current numeric thread ID mechanism and
824 replace it with a structure and associated callback type. This
825 mechanism allows a numeric "hash" to be extracted from a thread ID in
826 either case, and on platforms where pointers are larger than 'long',
827 mixing is done to help ensure the numeric 'hash' is usable even if it
828 can't be guaranteed unique. The default mechanism is to use "&errno"
829 as a pointer-based thread ID to distinguish between threads.
831 Applications that want to provide their own thread IDs should now use
832 CRYPTO_THREADID_set_callback() to register a callback that will call
833 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
835 Note that ERR_remove_state() is now deprecated, because it is tied
836 to the assumption that thread IDs are numeric. ERR_remove_state(0)
837 to free the current thread's error state should be replaced by
838 ERR_remove_thread_state(NULL).
840 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
841 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
842 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
843 application was previously providing a numeric thread callback that
844 was inappropriate for distinguishing threads, then uniqueness might
845 have been obtained with &errno that happened immediately in the
846 intermediate development versions of OpenSSL; this is no longer the
847 case, the numeric thread callback will now override the automatic use
849 [Geoff Thorpe, with help from Bodo Moeller]
851 *) Initial support for different CRL issuing certificates. This covers a
852 simple case where the self issued certificates in the chain exist and
853 the real CRL issuer is higher in the existing chain.
855 This work was sponsored by Google.
858 *) Removed effectively defunct crypto/store from the build.
861 *) Revamp of STACK to provide stronger type-checking. Still to come:
862 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
863 ASN1_STRING, CONF_VALUE.
866 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
867 RAM on SSL connections. This option can save about 34k per idle SSL.
870 *) Revamp of LHASH to provide stronger type-checking. Still to come:
871 STACK, TXT_DB, bsearch, qsort.
874 *) Initial support for Cryptographic Message Syntax (aka CMS) based
875 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
876 support for data, signedData, compressedData, digestedData and
877 encryptedData, envelopedData types included. Scripts to check against
878 RFC4134 examples draft and interop and consistency checks of many
879 content types and variants.
882 *) Add options to enc utility to support use of zlib compression BIO.
885 *) Extend mk1mf to support importing of options and assembly language
886 files from Configure script, currently only included in VC-WIN32.
887 The assembly language rules can now optionally generate the source
888 files from the associated perl scripts.
891 *) Implement remaining functionality needed to support GOST ciphersuites.
892 Interop testing has been performed using CryptoPro implementations.
893 [Victor B. Wagner <vitus@cryptocom.ru>]
895 *) s390x assembler pack.
898 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
902 *) Implement Opaque PRF Input TLS extension as specified in
903 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
904 official specification yet and no extension type assignment by
905 IANA exists, this extension (for now) will have to be explicitly
906 enabled when building OpenSSL by providing the extension number
907 to use. For example, specify an option
909 -DTLSEXT_TYPE_opaque_prf_input=0x9527
911 to the "config" or "Configure" script to enable the extension,
912 assuming extension number 0x9527 (which is a completely arbitrary
913 and unofficial assignment based on the MD5 hash of the Internet
914 Draft). Note that by doing so, you potentially lose
915 interoperability with other TLS implementations since these might
916 be using the same extension number for other purposes.
918 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
919 opaque PRF input value to use in the handshake. This will create
920 an interal copy of the length-'len' string at 'src', and will
921 return non-zero for success.
923 To get more control and flexibility, provide a callback function
926 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
927 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
931 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
934 Callback function 'cb' will be called in handshakes, and is
935 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
936 Argument 'arg' is for application purposes (the value as given to
937 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
938 be provided to the callback function). The callback function
939 has to return non-zero to report success: usually 1 to use opaque
940 PRF input just if possible, or 2 to enforce use of the opaque PRF
941 input. In the latter case, the library will abort the handshake
942 if opaque PRF input is not successfully negotiated.
944 Arguments 'peerinput' and 'len' given to the callback function
945 will always be NULL and 0 in the case of a client. A server will
946 see the client's opaque PRF input through these variables if
947 available (NULL and 0 otherwise). Note that if the server
948 provides an opaque PRF input, the length must be the same as the
949 length of the client's opaque PRF input.
951 Note that the callback function will only be called when creating
952 a new session (session resumption can resume whatever was
953 previously negotiated), and will not be called in SSL 2.0
954 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
955 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
956 for applications that need to enforce opaque PRF input.
960 *) Update ssl code to support digests other than SHA1+MD5 for handshake
963 [Victor B. Wagner <vitus@cryptocom.ru>]
965 *) Add RFC4507 support to OpenSSL. This includes the corrections in
966 RFC4507bis. The encrypted ticket format is an encrypted encoded
967 SSL_SESSION structure, that way new session features are automatically
970 If a client application caches session in an SSL_SESSION structure
971 support is transparent because tickets are now stored in the encoded
974 The SSL_CTX structure automatically generates keys for ticket
975 protection in servers so again support should be possible
976 with no application modification.
978 If a client or server wishes to disable RFC4507 support then the option
979 SSL_OP_NO_TICKET can be set.
981 Add a TLS extension debugging callback to allow the contents of any client
982 or server extensions to be examined.
984 This work was sponsored by Google.
987 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
988 OpenSSL should now compile cleanly on gcc 4.2
989 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
991 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
992 support including streaming MAC support: this is required for GOST
994 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
996 *) Add option -stream to use PKCS#7 streaming in smime utility. New
997 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
998 to output in BER and PEM format.
1001 *) Experimental support for use of HMAC via EVP_PKEY interface. This
1002 allows HMAC to be handled via the EVP_DigestSign*() interface. The
1003 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
1004 ENGINE support for HMAC keys which are unextractable. New -mac and
1005 -macopt options to dgst utility.
1008 *) New option -sigopt to dgst utility. Update dgst to use
1009 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
1010 alternative signing paramaters such as X9.31 or PSS in the dgst
1014 *) Change ssl_cipher_apply_rule(), the internal function that does
1015 the work each time a ciphersuite string requests enabling
1016 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
1017 removing ("!foo+bar") a class of ciphersuites: Now it maintains
1018 the order of disabled ciphersuites such that those ciphersuites
1019 that most recently went from enabled to disabled not only stay
1020 in order with respect to each other, but also have higher priority
1021 than other disabled ciphersuites the next time ciphersuites are
1024 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
1025 the same ciphersuites as with "HIGH" alone, but in a specific
1026 order where the PSK ciphersuites come first (since they are the
1027 most recently disabled ciphersuites when "HIGH" is parsed).
1029 Also, change ssl_create_cipher_list() (using this new
1030 funcionality) such that between otherwise identical
1031 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
1035 *) Change ssl_create_cipher_list() so that it automatically
1036 arranges the ciphersuites in reasonable order before starting
1037 to process the rule string. Thus, the definition for "DEFAULT"
1038 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
1039 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
1040 This makes it much easier to arrive at a reasonable default order
1041 in applications for which anonymous ciphers are OK (meaning
1042 that you can't actually use DEFAULT).
1043 [Bodo Moeller; suggested by Victor Duchovni]
1045 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
1046 processing) into multiple integers instead of setting
1047 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
1048 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
1049 (These masks as well as the individual bit definitions are hidden
1050 away into the non-exported interface ssl/ssl_locl.h, so this
1051 change to the definition of the SSL_CIPHER structure shouldn't
1052 affect applications.) This give us more bits for each of these
1053 categories, so there is no longer a need to coagulate AES128 and
1054 AES256 into a single algorithm bit, and to coagulate Camellia128
1055 and Camellia256 into a single algorithm bit, which has led to all
1058 Thus, among other things, the kludge introduced in 0.9.7m and
1059 0.9.8e for masking out AES256 independently of AES128 or masking
1060 out Camellia256 independently of AES256 is not needed here in 0.9.9.
1062 With the change, we also introduce new ciphersuite aliases that
1063 so far were missing: "AES128", "AES256", "CAMELLIA128", and
1067 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
1068 Use the leftmost N bytes of the signature input if the input is
1069 larger than the prime q (with N being the size in bytes of q).
1072 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
1073 it yet and it is largely untested.
1076 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
1079 *) Initial incomplete changes to avoid need for function casts in OpenSSL
1080 some compilers (gcc 4.2 and later) reject their use. Safestack is
1081 reimplemented. Update ASN1 to avoid use of legacy functions.
1084 *) Win32/64 targets are linked with Winsock2.
1087 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
1088 to external functions. This can be used to increase CRL handling
1089 efficiency especially when CRLs are very large by (for example) storing
1090 the CRL revoked certificates in a database.
1093 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
1094 new CRLs added to a directory can be used. New command line option
1095 -verify_return_error to s_client and s_server. This causes real errors
1096 to be returned by the verify callback instead of carrying on no matter
1097 what. This reflects the way a "real world" verify callback would behave.
1100 *) GOST engine, supporting several GOST algorithms and public key formats.
1101 Kindly donated by Cryptocom.
1104 *) Partial support for Issuing Distribution Point CRL extension. CRLs
1105 partitioned by DP are handled but no indirect CRL or reason partitioning
1106 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
1107 selected via a scoring technique which handles IDP and AKID in CRLs.
1110 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
1111 will ultimately be used for all verify operations: this will remove the
1112 X509_STORE dependency on certificate verification and allow alternative
1113 lookup methods. X509_STORE based implementations of these two callbacks.
1116 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
1117 Modify get_crl() to find a valid (unexpired) CRL if possible.
1120 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
1121 this would be called X509_CRL_cmp() but that name is already used by
1122 a function that just compares CRL issuer names. Cache several CRL
1123 extensions in X509_CRL structure and cache CRLDP in X509.
1126 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
1127 this maps equivalent X509_NAME structures into a consistent structure.
1128 Name comparison can then be performed rapidly using memcmp().
1131 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
1135 *) Allow digests to supply their own micalg string for S/MIME type using
1136 the ctrl EVP_MD_CTRL_MICALG.
1139 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
1140 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
1141 ctrl. It can then customise the structure before and/or after signing
1145 *) New function OBJ_add_sigid() to allow application defined signature OIDs
1146 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
1147 to free up any added signature OIDs.
1150 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
1151 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
1152 digest and cipher tables. New options added to openssl utility:
1153 list-message-digest-algorithms and list-cipher-algorithms.
1156 *) Change the array representation of binary polynomials: the list
1157 of degrees of non-zero coefficients is now terminated with -1.
1158 Previously it was terminated with 0, which was also part of the
1159 value; thus, the array representation was not applicable to
1160 polynomials where t^0 has coefficient zero. This change makes
1161 the array representation useful in a more general context.
1164 *) Various modifications and fixes to SSL/TLS cipher string
1165 handling. For ECC, the code now distinguishes between fixed ECDH
1166 with RSA certificates on the one hand and with ECDSA certificates
1167 on the other hand, since these are separate ciphersuites. The
1168 unused code for Fortezza ciphersuites has been removed.
1170 For consistency with EDH, ephemeral ECDH is now called "EECDH"
1171 (not "ECDHE"). For consistency with the code for DH
1172 certificates, use of ECDH certificates is now considered ECDH
1173 authentication, not RSA or ECDSA authentication (the latter is
1174 merely the CA's signing algorithm and not actively used in the
1177 The temporary ciphersuite alias "ECCdraft" is no longer
1178 available, and ECC ciphersuites are no longer excluded from "ALL"
1179 and "DEFAULT". The following aliases now exist for RFC 4492
1180 ciphersuites, most of these by analogy with the DH case:
1182 kECDHr - ECDH cert, signed with RSA
1183 kECDHe - ECDH cert, signed with ECDSA
1184 kECDH - ECDH cert (signed with either RSA or ECDSA)
1185 kEECDH - ephemeral ECDH
1186 ECDH - ECDH cert or ephemeral ECDH
1192 AECDH - anonymous ECDH
1193 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
1197 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
1198 Use correct micalg parameters depending on digest(s) in signed message.
1201 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
1202 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
1205 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
1206 an engine to register a method. Add ENGINE lookups for methods and
1207 functional reference processing.
1210 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
1211 EVP_{Sign,Verify}* which allow an application to customise the signature
1215 *) New -resign option to smime utility. This adds one or more signers
1216 to an existing PKCS#7 signedData structure. Also -md option to use an
1217 alternative message digest algorithm for signing.
1220 *) Tidy up PKCS#7 routines and add new functions to make it easier to
1221 create PKCS7 structures containing multiple signers. Update smime
1222 application to support multiple signers.
1225 *) New -macalg option to pkcs12 utility to allow setting of an alternative
1229 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
1230 Reorganize PBE internals to lookup from a static table using NIDs,
1231 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
1232 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
1233 PRF which will be automatically used with PBES2.
1236 *) Replace the algorithm specific calls to generate keys in "req" with the
1240 *) Update PKCS#7 enveloped data routines to use new API. This is now
1241 supported by any public key method supporting the encrypt operation. A
1242 ctrl is added to allow the public key algorithm to examine or modify
1243 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
1247 *) Add a ctrl to asn1 method to allow a public key algorithm to express
1248 a default digest type to use. In most cases this will be SHA1 but some
1249 algorithms (such as GOST) need to specify an alternative digest. The
1250 return value indicates how strong the prefernce is 1 means optional and
1251 2 is mandatory (that is it is the only supported type). Modify
1252 ASN1_item_sign() to accept a NULL digest argument to indicate it should
1253 use the default md. Update openssl utilities to use the default digest
1254 type for signing if it is not explicitly indicated.
1257 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
1258 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
1259 signing method from the key type. This effectively removes the link
1260 between digests and public key types.
1263 *) Add an OID cross reference table and utility functions. Its purpose is to
1264 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
1265 rsaEncryption. This will allow some of the algorithm specific hackery
1266 needed to use the correct OID to be removed.
1269 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
1270 structures for PKCS7_sign(). They are now set up by the relevant public
1274 *) Add provisional EC pkey method with support for ECDSA and ECDH.
1277 *) Add support for key derivation (agreement) in the API, DH method and
1281 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
1282 public and private key formats. As a side effect these add additional
1283 command line functionality not previously available: DSA signatures can be
1284 generated and verified using pkeyutl and DH key support and generation in
1289 [Oliver Tappe <zooey@hirschkaefer.de>]
1291 *) New make target "install_html_docs" installs HTML renditions of the
1293 [Oliver Tappe <zooey@hirschkaefer.de>]
1295 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
1296 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
1297 support key and parameter generation and add initial key generation
1298 functionality for RSA.
1301 *) Add functions for main EVP_PKEY_method operations. The undocumented
1302 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
1303 EVP_PKEY_{encrypt,decrypt}_old.
1306 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
1307 key API, doesn't do much yet.
1310 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
1311 public key algorithms. New option to openssl utility:
1312 "list-public-key-algorithms" to print out info.
1315 *) Implement the Supported Elliptic Curves Extension for
1316 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1319 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
1320 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
1323 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
1324 utilities such as rsa, dsa, dsaparam etc except they process any key
1328 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
1329 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
1330 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
1334 *) Initial support for pluggable public key ASN1.
1335 De-spaghettify the public key ASN1 handling. Move public and private
1336 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
1337 algorithm specific handling to a single module within the relevant
1338 algorithm directory. Add functions to allow (near) opaque processing
1339 of public and private key structures.
1342 *) Implement the Supported Point Formats Extension for
1343 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1346 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
1347 for the psk identity [hint] and the psk callback functions to the
1348 SSL_SESSION, SSL and SSL_CTX structure.
1351 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
1355 SSL_CTX_use_psk_identity_hint
1356 SSL_get_psk_identity_hint
1357 SSL_get_psk_identity
1358 SSL_use_psk_identity_hint
1360 [Mika Kousa and Pasi Eronen of Nokia Corporation]
1362 *) Add RFC 3161 compliant time stamp request creation, response generation
1363 and response verification functionality.
1364 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
1366 *) Add initial support for TLS extensions, specifically for the server_name
1367 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1368 have new members for a host name. The SSL data structure has an
1369 additional member SSL_CTX *initial_ctx so that new sessions can be
1370 stored in that context to allow for session resumption, even after the
1371 SSL has been switched to a new SSL_CTX in reaction to a client's
1372 server_name extension.
1374 New functions (subject to change):
1376 SSL_get_servername()
1377 SSL_get_servername_type()
1380 New CTRL codes and macros (subject to change):
1382 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1383 - SSL_CTX_set_tlsext_servername_callback()
1384 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1385 - SSL_CTX_set_tlsext_servername_arg()
1386 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1388 openssl s_client has a new '-servername ...' option.
1390 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1391 '-key2 ...', '-servername_fatal' (subject to change). This allows
1392 testing the HostName extension for a specific single host name ('-cert'
1393 and '-key' remain fallbacks for handshakes without HostName
1394 negotiation). If the unrecogninzed_name alert has to be sent, this by
1395 default is a warning; it becomes fatal with the '-servername_fatal'
1398 [Peter Sylvester, Remy Allais, Christophe Renou]
1400 *) Whirlpool hash implementation is added.
1403 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
1404 bn(64,32). Because of instruction set limitations it doesn't have
1405 any negative impact on performance. This was done mostly in order
1406 to make it possible to share assembler modules, such as bn_mul_mont
1407 implementations, between 32- and 64-bit builds without hassle.
1410 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
1411 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
1415 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
1416 dedicated Montgomery multiplication procedure, is introduced.
1417 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
1418 "64-bit" performance on certain 32-bit targets.
1421 *) New option SSL_OP_NO_COMP to disable use of compression selectively
1422 in SSL structures. New SSL ctrl to set maximum send fragment size.
1423 Save memory by seeting the I/O buffer sizes dynamically instead of
1424 using the maximum available value.
1427 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
1428 in addition to the text details.
1431 *) Very, very preliminary EXPERIMENTAL support for printing of general
1432 ASN1 structures. This currently produces rather ugly output and doesn't
1433 handle several customised structures at all.
1436 *) Integrated support for PVK file format and some related formats such
1437 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
1438 these in the 'rsa' and 'dsa' utilities.
1441 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
1444 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
1445 place for the (very old) "NETSCAPE" format certificates which are now
1446 handled using new ASN1 code equivalents.
1449 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
1450 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
1451 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
1454 *) Modify CRL distribution points extension code to print out previously
1455 unsupported fields. Enhance extension setting code to allow setting of
1459 *) Add print and set support for Issuing Distribution Point CRL extension.
1462 *) Change 'Configure' script to enable Camellia by default.
1465 Changes between 0.9.8r and 0.9.8s [xx XXX xxxx]
1467 *) Fix ssl_ciph.c set-up race.
1468 [Adam Langley (Google)]
1470 *) Fix spurious failures in ecdsatest.c.
1471 [Emilia Käsper (Google)]
1473 *) Fix the BIO_f_buffer() implementation (which was mixing different
1474 interpretations of the '..._len' fields).
1475 [Adam Langley (Google)]
1477 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
1478 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
1479 threads won't reuse the same blinding coefficients.
1481 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
1482 lock to call BN_BLINDING_invert_ex, and avoids one use of
1483 BN_BLINDING_update for each BN_BLINDING structure (previously,
1484 the last update always remained unused).
1485 [Emilia Käsper (Google)]
1487 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
1488 for multi-threaded use of ECDH.
1489 [Adam Langley (Google)]
1491 *) Fix x509_name_ex_d2i memory leak on bad inputs.
1494 *) Add protection against ECDSA timing attacks as mentioned in the paper
1495 by Billy Bob Brumley and Nicola Tuveri, see:
1497 http://eprint.iacr.org/2011/232.pdf
1499 [Billy Bob Brumley and Nicola Tuveri]
1501 Changes between 0.9.8q and 0.9.8r [8 Feb 2011]
1503 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
1504 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
1506 *) Fix bug in string printing code: if *any* escaping is enabled we must
1507 escape the escape character (backslash) or the resulting string is
1511 Changes between 0.9.8p and 0.9.8q [2 Dec 2010]
1513 *) Disable code workaround for ancient and obsolete Netscape browsers
1514 and servers: an attacker can use it in a ciphersuite downgrade attack.
1515 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
1518 *) Fixed J-PAKE implementation error, originally discovered by
1519 Sebastien Martini, further info and confirmation from Stefan
1520 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
1523 Changes between 0.9.8o and 0.9.8p [16 Nov 2010]
1525 *) Fix extension code to avoid race conditions which can result in a buffer
1526 overrun vulnerability: resumed sessions must not be modified as they can
1527 be shared by multiple threads. CVE-2010-3864
1530 *) Fix for double free bug in ssl/s3_clnt.c CVE-2010-2939
1533 *) Don't reencode certificate when calculating signature: cache and use
1534 the original encoding instead. This makes signature verification of
1535 some broken encodings work correctly.
1538 *) ec2_GF2m_simple_mul bugfix: compute correct result if the output EC_POINT
1539 is also one of the inputs.
1540 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
1542 *) Don't repeatedly append PBE algorithms to table if they already exist.
1543 Sort table on each new add. This effectively makes the table read only
1544 after all algorithms are added and subsequent calls to PKCS12_pbe_add
1548 Changes between 0.9.8n and 0.9.8o [01 Jun 2010]
1550 [NB: OpenSSL 0.9.8o and later 0.9.8 patch levels were released after
1553 *) Correct a typo in the CMS ASN1 module which can result in invalid memory
1554 access or freeing data twice (CVE-2010-0742)
1555 [Steve Henson, Ronald Moesbergen <intercommit@gmail.com>]
1557 *) Add SHA2 algorithms to SSL_library_init(). SHA2 is becoming far more
1558 common in certificates and some applications which only call
1559 SSL_library_init and not OpenSSL_add_all_algorithms() will fail.
1563 Reduce copying into .apps and .test in makevms.com
1564 Don't try to use blank CA certificate in CA.com
1565 Allow use of C files from original directories in maketests.com
1566 [Steven M. Schweda" <sms@antinode.info>]
1568 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
1570 *) When rejecting SSL/TLS records due to an incorrect version number, never
1571 update s->server with a new major version number. As of
1572 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
1573 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
1574 the previous behavior could result in a read attempt at NULL when
1575 receiving specific incorrect SSL/TLS records once record payload
1576 protection is active. (CVE-2010-0740)
1577 [Bodo Moeller, Adam Langley <agl@chromium.org>]
1579 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
1580 could be crashed if the relevant tables were not present (e.g. chrooted).
1581 [Tomas Hoger <thoger@redhat.com>]
1583 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
1585 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
1586 [Martin Olsson, Neel Mehta]
1588 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
1589 accommodate for stack sorting, always a write lock!).
1592 *) On some versions of WIN32 Heap32Next is very slow. This can cause
1593 excessive delays in the RAND_poll(): over a minute. As a workaround
1594 include a time check in the inner Heap32Next loop too.
1597 *) The code that handled flushing of data in SSL/TLS originally used the
1598 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
1599 the problem outlined in PR#1949. The fix suggested there however can
1600 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
1601 of Apache). So instead simplify the code to flush unconditionally.
1602 This should be fine since flushing with no data to flush is a no op.
1605 *) Handle TLS versions 2.0 and later properly and correctly use the
1606 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
1607 off ancient servers have a habit of sticking around for a while...
1610 *) Modify compression code so it frees up structures without using the
1611 ex_data callbacks. This works around a problem where some applications
1612 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
1613 restarting) then use compression (e.g. SSL with compression) later.
1614 This results in significant per-connection memory leaks and
1615 has caused some security issues including CVE-2008-1678 and
1619 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
1620 change when encrypting or decrypting.
1623 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
1624 connect and renegotiate with servers which do not support RI.
1625 Until RI is more widely deployed this option is enabled by default.
1628 *) Add "missing" ssl ctrls to clear options and mode.
1631 *) If client attempts to renegotiate and doesn't support RI respond with
1632 a no_renegotiation alert as required by RFC5746. Some renegotiating
1633 TLS clients will continue a connection gracefully when they receive
1634 the alert. Unfortunately OpenSSL mishandled this alert and would hang
1635 waiting for a server hello which it will never receive. Now we treat a
1636 received no_renegotiation alert as a fatal error. This is because
1637 applications requesting a renegotiation might well expect it to succeed
1638 and would have no code in place to handle the server denying it so the
1639 only safe thing to do is to terminate the connection.
1642 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
1643 peer supports secure renegotiation and 0 otherwise. Print out peer
1644 renegotiation support in s_client/s_server.
1647 *) Replace the highly broken and deprecated SPKAC certification method with
1648 the updated NID creation version. This should correctly handle UTF8.
1651 *) Implement RFC5746. Re-enable renegotiation but require the extension
1652 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
1653 turns out to be a bad idea. It has been replaced by
1654 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
1655 SSL_CTX_set_options(). This is really not recommended unless you
1656 know what you are doing.
1657 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
1659 *) Fixes to stateless session resumption handling. Use initial_ctx when
1660 issuing and attempting to decrypt tickets in case it has changed during
1661 servername handling. Use a non-zero length session ID when attempting
1662 stateless session resumption: this makes it possible to determine if
1663 a resumption has occurred immediately after receiving server hello
1664 (several places in OpenSSL subtly assume this) instead of later in
1668 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
1669 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
1670 fixes for a few places where the return code is not checked
1672 [Julia Lawall <julia@diku.dk>]
1674 *) Add --strict-warnings option to Configure script to include devteam
1675 warnings in other configurations.
1678 *) Add support for --libdir option and LIBDIR variable in makefiles. This
1679 makes it possible to install openssl libraries in locations which
1680 have names other than "lib", for example "/usr/lib64" which some
1682 [Steve Henson, based on patch from Jeremy Utley]
1684 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
1685 X690 8.9.12 and can produce some misleading textual output of OIDs.
1686 [Steve Henson, reported by Dan Kaminsky]
1688 *) Delete MD2 from algorithm tables. This follows the recommendation in
1689 several standards that it is not used in new applications due to
1690 several cryptographic weaknesses. For binary compatibility reasons
1691 the MD2 API is still compiled in by default.
1694 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
1698 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
1699 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
1701 [Guenter <lists@gknw.net>]
1703 *) Fix the server certificate chain building code to use X509_verify_cert(),
1704 it used to have an ad-hoc builder which was unable to cope with anything
1705 other than a simple chain.
1706 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
1708 *) Don't check self signed certificate signatures in X509_verify_cert()
1709 by default (a flag can override this): it just wastes time without
1710 adding any security. As a useful side effect self signed root CAs
1711 with non-FIPS digests are now usable in FIPS mode.
1714 *) In dtls1_process_out_of_seq_message() the check if the current message
1715 is already buffered was missing. For every new message was memory
1716 allocated, allowing an attacker to perform an denial of service attack
1717 with sending out of seq handshake messages until there is no memory
1718 left. Additionally every future messege was buffered, even if the
1719 sequence number made no sense and would be part of another handshake.
1720 So only messages with sequence numbers less than 10 in advance will be
1721 buffered. (CVE-2009-1378)
1722 [Robin Seggelmann, discovered by Daniel Mentz]
1724 *) Records are buffered if they arrive with a future epoch to be
1725 processed after finishing the corresponding handshake. There is
1726 currently no limitation to this buffer allowing an attacker to perform
1727 a DOS attack with sending records with future epochs until there is no
1728 memory left. This patch adds the pqueue_size() function to detemine
1729 the size of a buffer and limits the record buffer to 100 entries.
1731 [Robin Seggelmann, discovered by Daniel Mentz]
1733 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
1734 parent structure is freed. (CVE-2009-1379)
1737 *) Handle non-blocking I/O properly in SSL_shutdown() call.
1738 [Darryl Miles <darryl-mailinglists@netbauds.net>]
1741 [Ilya O. <vrghost@gmail.com>]
1743 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
1745 *) Disable renegotiation completely - this fixes a severe security
1746 problem (CVE-2009-3555) at the cost of breaking all
1747 renegotiation. Renegotiation can be re-enabled by setting
1748 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
1749 run-time. This is really not recommended unless you know what
1753 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
1755 *) Don't set val to NULL when freeing up structures, it is freed up by
1756 underlying code. If sizeof(void *) > sizeof(long) this can result in
1757 zeroing past the valid field. (CVE-2009-0789)
1758 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
1760 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
1761 checked correctly. This would allow some invalid signed attributes to
1762 appear to verify correctly. (CVE-2009-0591)
1763 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1765 *) Reject UniversalString and BMPString types with invalid lengths. This
1766 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
1767 a legal length. (CVE-2009-0590)
1770 *) Set S/MIME signing as the default purpose rather than setting it
1771 unconditionally. This allows applications to override it at the store
1775 *) Permit restricted recursion of ASN1 strings. This is needed in practice
1776 to handle some structures.
1779 *) Improve efficiency of mem_gets: don't search whole buffer each time
1781 [Jeremy Shapiro <jnshapir@us.ibm.com>]
1783 *) New -hex option for openssl rand.
1786 *) Print out UTF8String and NumericString when parsing ASN1.
1789 *) Support NumericString type for name components.
1792 *) Allow CC in the environment to override the automatically chosen
1793 compiler. Note that nothing is done to ensure flags work with the
1797 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
1799 *) Properly check EVP_VerifyFinal() and similar return values
1801 [Ben Laurie, Bodo Moeller, Google Security Team]
1803 *) Enable TLS extensions by default.
1806 *) Allow the CHIL engine to be loaded, whether the application is
1807 multithreaded or not. (This does not release the developer from the
1808 obligation to set up the dynamic locking callbacks.)
1809 [Sander Temme <sander@temme.net>]
1811 *) Use correct exit code if there is an error in dgst command.
1812 [Steve Henson; problem pointed out by Roland Dirlewanger]
1814 *) Tweak Configure so that you need to say "experimental-jpake" to enable
1815 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
1818 *) Add experimental JPAKE support, including demo authentication in
1819 s_client and s_server.
1822 *) Set the comparison function in v3_addr_canonize().
1823 [Rob Austein <sra@hactrn.net>]
1825 *) Add support for XMPP STARTTLS in s_client.
1826 [Philip Paeps <philip@freebsd.org>]
1828 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
1829 to ensure that even with this option, only ciphersuites in the
1830 server's preference list will be accepted. (Note that the option
1831 applies only when resuming a session, so the earlier behavior was
1832 just about the algorithm choice for symmetric cryptography.)
1835 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
1837 *) Fix NULL pointer dereference if a DTLS server received
1838 ChangeCipherSpec as first record (CVE-2009-1386).
1841 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
1842 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
1845 *) The fix in 0.9.8c that supposedly got rid of unsafe
1846 double-checked locking was incomplete for RSA blinding,
1847 addressing just one layer of what turns out to have been
1848 doubly unsafe triple-checked locking.
1850 So now fix this for real by retiring the MONT_HELPER macro
1851 in crypto/rsa/rsa_eay.c.
1853 [Bodo Moeller; problem pointed out by Marius Schilder]
1855 *) Various precautionary measures:
1857 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
1859 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
1860 (NB: This would require knowledge of the secret session ticket key
1861 to exploit, in which case you'd be SOL either way.)
1863 - Change bn_nist.c so that it will properly handle input BIGNUMs
1864 outside the expected range.
1866 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
1869 [Neel Mehta, Bodo Moeller]
1871 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
1872 the load fails. Useful for distros.
1873 [Ben Laurie and the FreeBSD team]
1875 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
1878 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
1881 *) Expand ENGINE to support engine supplied SSL client certificate functions.
1883 This work was sponsored by Logica.
1886 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
1887 keystores. Support for SSL/TLS client authentication too.
1888 Not compiled unless enable-capieng specified to Configure.
1890 This work was sponsored by Logica.
1893 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
1894 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
1895 attribute creation routines such as certifcate requests and PKCS#12
1899 Changes between 0.9.8g and 0.9.8h [28 May 2008]
1901 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
1902 handshake which could lead to a cilent crash as found using the
1903 Codenomicon TLS test suite (CVE-2008-1672)
1904 [Steve Henson, Mark Cox]
1906 *) Fix double free in TLS server name extensions which could lead to
1907 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
1910 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
1912 Clear the error queue to ensure that error entries left from
1913 older function calls do not interfere with the correct operation.
1914 [Lutz Jaenicke, Erik de Castro Lopo]
1916 *) Remove root CA certificates of commercial CAs:
1918 The OpenSSL project does not recommend any specific CA and does not
1919 have any policy with respect to including or excluding any CA.
1920 Therefore it does not make any sense to ship an arbitrary selection
1921 of root CA certificates with the OpenSSL software.
1924 *) RSA OAEP patches to fix two separate invalid memory reads.
1925 The first one involves inputs when 'lzero' is greater than
1926 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
1927 before the beginning of from). The second one involves inputs where
1928 the 'db' section contains nothing but zeroes (there is a one-byte
1929 invalid read after the end of 'db').
1930 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1932 *) Partial backport from 0.9.9-dev:
1934 Introduce bn_mul_mont (dedicated Montgomery multiplication
1935 procedure) as a candidate for BIGNUM assembler implementation.
1936 While 0.9.9-dev uses assembler for various architectures, only
1937 x86_64 is available by default here in the 0.9.8 branch, and
1938 32-bit x86 is available through a compile-time setting.
1940 To try the 32-bit x86 assembler implementation, use Configure
1941 option "enable-montasm" (which exists only for this backport).
1943 As "enable-montasm" for 32-bit x86 disclaims code stability
1944 anyway, in this constellation we activate additional code
1945 backported from 0.9.9-dev for further performance improvements,
1946 namely BN_from_montgomery_word. (To enable this otherwise,
1947 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
1949 [Andy Polyakov (backport partially by Bodo Moeller)]
1951 *) Add TLS session ticket callback. This allows an application to set
1952 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
1953 values. This is useful for key rollover for example where several key
1954 sets may exist with different names.
1957 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
1958 This was broken until now in 0.9.8 releases, such that the only way
1959 a registered ENGINE could be used (assuming it initialises
1960 successfully on the host) was to explicitly set it as the default
1961 for the relevant algorithms. This is in contradiction with 0.9.7
1962 behaviour and the documentation. With this fix, when an ENGINE is
1963 registered into a given algorithm's table of implementations, the
1964 'uptodate' flag is reset so that auto-discovery will be used next
1965 time a new context for that algorithm attempts to select an
1967 [Ian Lister (tweaked by Geoff Thorpe)]
1969 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
1970 implemention in the following ways:
1972 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
1975 Lack of BER streaming support means one pass streaming processing is
1976 only supported if data is detached: setting the streaming flag is
1977 ignored for embedded content.
1979 CMS support is disabled by default and must be explicitly enabled
1980 with the enable-cms configuration option.
1983 *) Update the GMP engine glue to do direct copies between BIGNUM and
1984 mpz_t when openssl and GMP use the same limb size. Otherwise the
1985 existing "conversion via a text string export" trick is still used.
1986 [Paul Sheer <paulsheer@gmail.com>]
1988 *) Zlib compression BIO. This is a filter BIO which compressed and
1989 uncompresses any data passed through it.
1992 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
1993 RFC3394 compatible AES key wrapping.
1996 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
1997 sets string data without copying. X509_ALGOR_set0() and
1998 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
1999 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
2000 from an X509_ATTRIBUTE structure optionally checking it occurs only
2001 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
2005 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
2006 to get the expected BN_FLG_CONSTTIME behavior.
2007 [Bodo Moeller (Google)]
2011 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
2012 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
2013 - added some more tests to do_tests.pl
2014 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
2015 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
2016 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
2017 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
2018 - various changes to netware.pl to enable gcc-cross builds on Win32
2020 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
2021 - various changes to fix missing prototype warnings
2022 - fixed x86nasm.pl to create correct asm files for NASM COFF output
2023 - added AES, WHIRLPOOL and CPUID assembler code to build files
2024 - added missing AES assembler make rules to mk1mf.pl
2025 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
2026 [Guenter Knauf <eflash@gmx.net>]
2028 *) Implement certificate status request TLS extension defined in RFC3546.
2029 A client can set the appropriate parameters and receive the encoded
2030 OCSP response via a callback. A server can query the supplied parameters
2031 and set the encoded OCSP response in the callback. Add simplified examples
2032 to s_client and s_server.
2035 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
2037 *) Fix various bugs:
2038 + Binary incompatibility of ssl_ctx_st structure
2039 + DTLS interoperation with non-compliant servers
2040 + Don't call get_session_cb() without proposed session
2041 + Fix ia64 assembler code
2042 [Andy Polyakov, Steve Henson]
2044 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
2046 *) DTLS Handshake overhaul. There were longstanding issues with
2047 OpenSSL DTLS implementation, which were making it impossible for
2048 RFC 4347 compliant client to communicate with OpenSSL server.
2049 Unfortunately just fixing these incompatibilities would "cut off"
2050 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
2051 server keeps tolerating non RFC compliant syntax. The opposite is
2052 not true, 0.9.8f client can not communicate with earlier server.
2053 This update even addresses CVE-2007-4995.
2056 *) Changes to avoid need for function casts in OpenSSL: some compilers
2057 (gcc 4.2 and later) reject their use.
2058 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
2061 *) Add RFC4507 support to OpenSSL. This includes the corrections in
2062 RFC4507bis. The encrypted ticket format is an encrypted encoded
2063 SSL_SESSION structure, that way new session features are automatically
2066 If a client application caches session in an SSL_SESSION structure
2067 support is transparent because tickets are now stored in the encoded
2070 The SSL_CTX structure automatically generates keys for ticket
2071 protection in servers so again support should be possible
2072 with no application modification.
2074 If a client or server wishes to disable RFC4507 support then the option
2075 SSL_OP_NO_TICKET can be set.
2077 Add a TLS extension debugging callback to allow the contents of any client
2078 or server extensions to be examined.
2080 This work was sponsored by Google.
2083 *) Add initial support for TLS extensions, specifically for the server_name
2084 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
2085 have new members for a host name. The SSL data structure has an
2086 additional member SSL_CTX *initial_ctx so that new sessions can be
2087 stored in that context to allow for session resumption, even after the
2088 SSL has been switched to a new SSL_CTX in reaction to a client's
2089 server_name extension.
2091 New functions (subject to change):
2093 SSL_get_servername()
2094 SSL_get_servername_type()
2097 New CTRL codes and macros (subject to change):
2099 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
2100 - SSL_CTX_set_tlsext_servername_callback()
2101 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
2102 - SSL_CTX_set_tlsext_servername_arg()
2103 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
2105 openssl s_client has a new '-servername ...' option.
2107 openssl s_server has new options '-servername_host ...', '-cert2 ...',
2108 '-key2 ...', '-servername_fatal' (subject to change). This allows
2109 testing the HostName extension for a specific single host name ('-cert'
2110 and '-key' remain fallbacks for handshakes without HostName
2111 negotiation). If the unrecogninzed_name alert has to be sent, this by
2112 default is a warning; it becomes fatal with the '-servername_fatal'
2115 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
2117 *) Add AES and SSE2 assembly language support to VC++ build.
2120 *) Mitigate attack on final subtraction in Montgomery reduction.
2123 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
2124 (which previously caused an internal error).
2127 *) Squeeze another 10% out of IGE mode when in != out.
2130 *) AES IGE mode speedup.
2131 [Dean Gaudet (Google)]
2133 *) Add the Korean symmetric 128-bit cipher SEED (see
2134 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
2135 add SEED ciphersuites from RFC 4162:
2137 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
2138 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
2139 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
2140 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
2142 To minimize changes between patchlevels in the OpenSSL 0.9.8
2143 series, SEED remains excluded from compilation unless OpenSSL
2144 is configured with 'enable-seed'.
2145 [KISA, Bodo Moeller]
2147 *) Mitigate branch prediction attacks, which can be practical if a
2148 single processor is shared, allowing a spy process to extract
2149 information. For detailed background information, see
2150 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
2151 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
2152 and Necessary Software Countermeasures"). The core of the change
2153 are new versions BN_div_no_branch() and
2154 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
2155 respectively, which are slower, but avoid the security-relevant
2156 conditional branches. These are automatically called by BN_div()
2157 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
2158 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
2159 remove a conditional branch.
2161 BN_FLG_CONSTTIME is the new name for the previous
2162 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
2163 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
2164 in the exponent causes BN_mod_exp_mont() to use the alternative
2165 implementation in BN_mod_exp_mont_consttime().) The old name
2166 remains as a deprecated alias.
2168 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
2169 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
2170 constant-time implementations for more than just exponentiation.
2171 Here too the old name is kept as a deprecated alias.
2173 BN_BLINDING_new() will now use BN_dup() for the modulus so that
2174 the BN_BLINDING structure gets an independent copy of the
2175 modulus. This means that the previous "BIGNUM *m" argument to
2176 BN_BLINDING_new() and to BN_BLINDING_create_param() now
2177 essentially becomes "const BIGNUM *m", although we can't actually
2178 change this in the header file before 0.9.9. It allows
2179 RSA_setup_blinding() to use BN_with_flags() on the modulus to
2180 enable BN_FLG_CONSTTIME.
2182 [Matthew D Wood (Intel Corp)]
2184 *) In the SSL/TLS server implementation, be strict about session ID
2185 context matching (which matters if an application uses a single
2186 external cache for different purposes). Previously,
2187 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
2188 set. This did ensure strict client verification, but meant that,
2189 with applications using a single external cache for quite
2190 different requirements, clients could circumvent ciphersuite
2191 restrictions for a given session ID context by starting a session
2192 in a different context.
2195 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2196 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2197 authentication-only ciphersuites.
2200 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
2201 not complete and could lead to a possible single byte overflow
2202 (CVE-2007-5135) [Ben Laurie]
2204 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
2206 *) Since AES128 and AES256 (and similarly Camellia128 and
2207 Camellia256) share a single mask bit in the logic of
2208 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2209 kludge to work properly if AES128 is available and AES256 isn't
2210 (or if Camellia128 is available and Camellia256 isn't).
2213 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
2214 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
2215 When a point or a seed is encoded in a BIT STRING, we need to
2216 prevent the removal of trailing zero bits to get the proper DER
2217 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
2218 of a NamedBitList, for which trailing 0 bits need to be removed.)
2221 *) Have SSL/TLS server implementation tolerate "mismatched" record
2222 protocol version while receiving ClientHello even if the
2223 ClientHello is fragmented. (The server can't insist on the
2224 particular protocol version it has chosen before the ServerHello
2225 message has informed the client about his choice.)
2228 *) Add RFC 3779 support.
2229 [Rob Austein for ARIN, Ben Laurie]
2231 *) Load error codes if they are not already present instead of using a
2232 static variable. This allows them to be cleanly unloaded and reloaded.
2233 Improve header file function name parsing.
2236 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
2237 or CAPABILITY handshake as required by RFCs.
2240 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
2242 *) Introduce limits to prevent malicious keys being able to
2243 cause a denial of service. (CVE-2006-2940)
2244 [Steve Henson, Bodo Moeller]
2246 *) Fix ASN.1 parsing of certain invalid structures that can result
2247 in a denial of service. (CVE-2006-2937) [Steve Henson]
2249 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2250 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2252 *) Fix SSL client code which could crash if connecting to a
2253 malicious SSLv2 server. (CVE-2006-4343)
2254 [Tavis Ormandy and Will Drewry, Google Security Team]
2256 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
2257 match only those. Before that, "AES256-SHA" would be interpreted
2258 as a pattern and match "AES128-SHA" too (since AES128-SHA got
2259 the same strength classification in 0.9.7h) as we currently only
2260 have a single AES bit in the ciphersuite description bitmap.
2261 That change, however, also applied to ciphersuite strings such as
2262 "RC4-MD5" that intentionally matched multiple ciphersuites --
2263 namely, SSL 2.0 ciphersuites in addition to the more common ones
2264 from SSL 3.0/TLS 1.0.
2266 So we change the selection algorithm again: Naming an explicit
2267 ciphersuite selects this one ciphersuite, and any other similar
2268 ciphersuite (same bitmap) from *other* protocol versions.
2269 Thus, "RC4-MD5" again will properly select both the SSL 2.0
2270 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
2272 Since SSL 2.0 does not have any ciphersuites for which the
2273 128/256 bit distinction would be relevant, this works for now.
2274 The proper fix will be to use different bits for AES128 and
2275 AES256, which would have avoided the problems from the beginning;
2276 however, bits are scarce, so we can only do this in a new release
2277 (not just a patchlevel) when we can change the SSL_CIPHER
2278 definition to split the single 'unsigned long mask' bitmap into
2279 multiple values to extend the available space.
2283 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
2285 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2286 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2288 *) Add AES IGE and biIGE modes.
2291 *) Change the Unix randomness entropy gathering to use poll() when
2292 possible instead of select(), since the latter has some
2293 undesirable limitations.
2294 [Darryl Miles via Richard Levitte and Bodo Moeller]
2296 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
2297 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
2298 cannot be implicitly activated as part of, e.g., the "AES" alias.
2299 However, please upgrade to OpenSSL 0.9.9[-dev] for
2300 non-experimental use of the ECC ciphersuites to get TLS extension
2301 support, which is required for curve and point format negotiation
2302 to avoid potential handshake problems.
2305 *) Disable rogue ciphersuites:
2307 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2308 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2309 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2311 The latter two were purportedly from
2312 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2315 Also deactivate the remaining ciphersuites from
2316 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2317 unofficial, and the ID has long expired.
2320 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2321 dual-core machines) and other potential thread-safety issues.
2324 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
2325 versions), which is now available for royalty-free use
2326 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
2327 Also, add Camellia TLS ciphersuites from RFC 4132.
2329 To minimize changes between patchlevels in the OpenSSL 0.9.8
2330 series, Camellia remains excluded from compilation unless OpenSSL
2331 is configured with 'enable-camellia'.
2334 *) Disable the padding bug check when compression is in use. The padding
2335 bug check assumes the first packet is of even length, this is not
2336 necessarily true if compresssion is enabled and can result in false
2337 positives causing handshake failure. The actual bug test is ancient
2338 code so it is hoped that implementations will either have fixed it by
2339 now or any which still have the bug do not support compression.
2342 Changes between 0.9.8a and 0.9.8b [04 May 2006]
2344 *) When applying a cipher rule check to see if string match is an explicit
2345 cipher suite and only match that one cipher suite if it is.
2348 *) Link in manifests for VC++ if needed.
2349 [Austin Ziegler <halostatue@gmail.com>]
2351 *) Update support for ECC-based TLS ciphersuites according to
2352 draft-ietf-tls-ecc-12.txt with proposed changes (but without
2353 TLS extensions, which are supported starting with the 0.9.9
2354 branch, not in the OpenSSL 0.9.8 branch).
2357 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
2358 opaque EVP_CIPHER_CTX handling.
2361 *) Fixes and enhancements to zlib compression code. We now only use
2362 "zlib1.dll" and use the default __cdecl calling convention on Win32
2363 to conform with the standards mentioned here:
2364 http://www.zlib.net/DLL_FAQ.txt
2365 Static zlib linking now works on Windows and the new --with-zlib-include
2366 --with-zlib-lib options to Configure can be used to supply the location
2367 of the headers and library. Gracefully handle case where zlib library
2371 *) Several fixes and enhancements to the OID generation code. The old code
2372 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
2373 handle numbers larger than ULONG_MAX, truncated printing and had a
2374 non standard OBJ_obj2txt() behaviour.
2377 *) Add support for building of engines under engine/ as shared libraries
2378 under VC++ build system.
2381 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
2382 Hopefully, we will not see any false combination of paths any more.
2385 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
2387 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2388 (part of SSL_OP_ALL). This option used to disable the
2389 countermeasure against man-in-the-middle protocol-version
2390 rollback in the SSL 2.0 server implementation, which is a bad
2391 idea. (CVE-2005-2969)
2393 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2394 for Information Security, National Institute of Advanced Industrial
2395 Science and Technology [AIST], Japan)]
2397 *) Add two function to clear and return the verify parameter flags.
2400 *) Keep cipherlists sorted in the source instead of sorting them at
2401 runtime, thus removing the need for a lock.
2404 *) Avoid some small subgroup attacks in Diffie-Hellman.
2405 [Nick Mathewson and Ben Laurie]
2407 *) Add functions for well-known primes.
2410 *) Extended Windows CE support.
2411 [Satoshi Nakamura and Andy Polyakov]
2413 *) Initialize SSL_METHOD structures at compile time instead of during
2414 runtime, thus removing the need for a lock.
2417 *) Make PKCS7_decrypt() work even if no certificate is supplied by
2418 attempting to decrypt each encrypted key in turn. Add support to
2422 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
2424 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
2427 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
2430 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
2431 key into the same file any more.
2434 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
2437 *) Add -utf8 command line and config file option to 'ca'.
2438 [Stefan <stf@udoma.org]
2440 *) Removed the macro des_crypt(), as it seems to conflict with some
2441 libraries. Use DES_crypt().
2444 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
2445 involves renaming the source and generated shared-libs for
2446 both. The engines will accept the corrected or legacy ids
2447 ('ncipher' and '4758_cca' respectively) when binding. NB,
2448 this only applies when building 'shared'.
2449 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
2451 *) Add attribute functions to EVP_PKEY structure. Modify
2452 PKCS12_create() to recognize a CSP name attribute and
2453 use it. Make -CSP option work again in pkcs12 utility.
2456 *) Add new functionality to the bn blinding code:
2457 - automatic re-creation of the BN_BLINDING parameters after
2458 a fixed number of uses (currently 32)
2459 - add new function for parameter creation
2460 - introduce flags to control the update behaviour of the
2461 BN_BLINDING parameters
2462 - hide BN_BLINDING structure
2463 Add a second BN_BLINDING slot to the RSA structure to improve
2464 performance when a single RSA object is shared among several
2468 *) Add support for DTLS.
2469 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
2471 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
2472 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
2475 *) Remove buggy and incompletet DH cert support from
2476 ssl/ssl_rsa.c and ssl/s3_both.c
2479 *) Use SHA-1 instead of MD5 as the default digest algorithm for
2480 the apps/openssl applications.
2483 *) Compile clean with "-Wall -Wmissing-prototypes
2484 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
2485 DEBUG_SAFESTACK must also be set.
2488 *) Change ./Configure so that certain algorithms can be disabled by default.
2489 The new counterpiece to "no-xxx" is "enable-xxx".
2491 The patented RC5 and MDC2 algorithms will now be disabled unless
2492 "enable-rc5" and "enable-mdc2", respectively, are specified.
2494 (IDEA remains enabled despite being patented. This is because IDEA
2495 is frequently required for interoperability, and there is no license
2496 fee for non-commercial use. As before, "no-idea" can be used to
2497 avoid this algorithm.)
2501 *) Add processing of proxy certificates (see RFC 3820). This work was
2502 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
2503 EGEE (Enabling Grids for E-science in Europe).
2506 *) RC4 performance overhaul on modern architectures/implementations, such
2507 as Intel P4, IA-64 and AMD64.
2510 *) New utility extract-section.pl. This can be used specify an alternative
2511 section number in a pod file instead of having to treat each file as
2512 a separate case in Makefile. This can be done by adding two lines to the
2515 =for comment openssl_section:XXX
2517 The blank line is mandatory.
2521 *) New arguments -certform, -keyform and -pass for s_client and s_server
2522 to allow alternative format key and certificate files and passphrase
2526 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
2527 update associated structures and add various utility functions.
2529 Add new policy related verify parameters, include policy checking in
2530 standard verify code. Enhance 'smime' application with extra parameters
2531 to support policy checking and print out.
2534 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
2535 Nehemiah processors. These extensions support AES encryption in hardware
2536 as well as RNG (though RNG support is currently disabled).
2537 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
2539 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
2542 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
2543 [Andy Polyakov and a number of other people]
2545 *) Improved PowerPC platform support. Most notably BIGNUM assembler
2546 implementation contributed by IBM.
2547 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
2549 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
2550 exponent rather than 'unsigned long'. There is a corresponding change to
2551 the new 'rsa_keygen' element of the RSA_METHOD structure.
2552 [Jelte Jansen, Geoff Thorpe]
2554 *) Functionality for creating the initial serial number file is now
2555 moved from CA.pl to the 'ca' utility with a new option -create_serial.
2557 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
2558 number file to 1, which is bound to cause problems. To avoid
2559 the problems while respecting compatibility between different 0.9.7
2560 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
2561 CA.pl for serial number initialization. With the new release 0.9.8,
2562 we can fix the problem directly in the 'ca' utility.)
2565 *) Reduced header interdepencies by declaring more opaque objects in
2566 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
2567 give fewer recursive includes, which could break lazy source code - so
2568 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
2569 developers should define this symbol when building and using openssl to
2570 ensure they track the recommended behaviour, interfaces, [etc], but
2571 backwards-compatible behaviour prevails when this isn't defined.
2574 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
2577 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
2578 This will generate a random key of the appropriate length based on the
2579 cipher context. The EVP_CIPHER can provide its own random key generation
2580 routine to support keys of a specific form. This is used in the des and
2581 3des routines to generate a key of the correct parity. Update S/MIME
2582 code to use new functions and hence generate correct parity DES keys.
2583 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
2584 valid (weak or incorrect parity).
2587 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
2588 as looking them up. This is useful when the verified structure may contain
2589 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
2590 present unless the new PKCS7_NO_CRL flag is asserted.
2593 *) Extend ASN1 oid configuration module. It now additionally accepts the
2596 shortName = some long name, 1.2.3.4
2599 *) Reimplemented the BN_CTX implementation. There is now no more static
2600 limitation on the number of variables it can handle nor the depth of the
2601 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
2602 information can now expand as required, and rather than having a single
2603 static array of bignums, BN_CTX now uses a linked-list of such arrays
2604 allowing it to expand on demand whilst maintaining the usefulness of
2605 BN_CTX's "bundling".
2608 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
2609 to allow all RSA operations to function using a single BN_CTX.
2612 *) Preliminary support for certificate policy evaluation and checking. This
2613 is initially intended to pass the tests outlined in "Conformance Testing
2614 of Relying Party Client Certificate Path Processing Logic" v1.07.
2617 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
2618 remained unused and not that useful. A variety of other little bignum
2619 tweaks and fixes have also been made continuing on from the audit (see
2623 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
2624 associated ASN1, EVP and SSL functions and old ASN1 macros.
2627 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
2628 and this should never fail. So the return value from the use of
2629 BN_set_word() (which can fail due to needless expansion) is now deprecated;
2630 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
2633 *) BN_CTX_get() should return zero-valued bignums, providing the same
2634 initialised value as BN_new().
2635 [Geoff Thorpe, suggested by Ulf Möller]
2637 *) Support for inhibitAnyPolicy certificate extension.
2640 *) An audit of the BIGNUM code is underway, for which debugging code is
2641 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
2642 is considered valid when processing BIGNUMs, and causes execution to
2643 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
2644 further steps are taken to deliberately pollute unused data in BIGNUM
2645 structures to try and expose faulty code further on. For now, openssl will
2646 (in its default mode of operation) continue to tolerate the inconsistent
2647 forms that it has tolerated in the past, but authors and packagers should
2648 consider trying openssl and their own applications when compiled with
2649 these debugging symbols defined. It will help highlight potential bugs in
2650 their own code, and will improve the test coverage for OpenSSL itself. At
2651 some point, these tighter rules will become openssl's default to improve
2652 maintainability, though the assert()s and other overheads will remain only
2653 in debugging configurations. See bn.h for more details.
2654 [Geoff Thorpe, Nils Larsch, Ulf Möller]
2656 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
2657 that can only be obtained through BN_CTX_new() (which implicitly
2658 initialises it). The presence of this function only made it possible
2659 to overwrite an existing structure (and cause memory leaks).
2662 *) Because of the callback-based approach for implementing LHASH as a
2663 template type, lh_insert() adds opaque objects to hash-tables and
2664 lh_doall() or lh_doall_arg() are typically used with a destructor callback
2665 to clean up those corresponding objects before destroying the hash table
2666 (and losing the object pointers). So some over-zealous constifications in
2667 LHASH have been relaxed so that lh_insert() does not take (nor store) the
2668 objects as "const" and the lh_doall[_arg] callback wrappers are not
2669 prototyped to have "const" restrictions on the object pointers they are
2670 given (and so aren't required to cast them away any more).
2673 *) The tmdiff.h API was so ugly and minimal that our own timing utility
2674 (speed) prefers to use its own implementation. The two implementations
2675 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
2676 its object type properly exposed (MS_TM) instead of casting to/from "char
2677 *". This may still change yet if someone realises MS_TM and "ms_time_***"
2678 aren't necessarily the greatest nomenclatures - but this is what was used
2679 internally to the implementation so I've used that for now.
2682 *) Ensure that deprecated functions do not get compiled when
2683 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
2684 the self-tests were still using deprecated key-generation functions so
2685 these have been updated also.
2688 *) Reorganise PKCS#7 code to separate the digest location functionality
2689 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
2690 New function PKCS7_set_digest() to set the digest type for PKCS#7
2691 digestedData type. Add additional code to correctly generate the
2692 digestedData type and add support for this type in PKCS7 initialization
2696 *) New function PKCS7_set0_type_other() this initializes a PKCS7
2697 structure of type "other".
2700 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
2701 sure the loop does correctly stop and breaking ("division by zero")
2702 modulus operations are not performed. The (pre-generated) prime
2703 table crypto/bn/bn_prime.h was already correct, but it could not be
2704 re-generated on some platforms because of the "division by zero"
2705 situation in the script.
2706 [Ralf S. Engelschall]
2708 *) Update support for ECC-based TLS ciphersuites according to
2709 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
2710 SHA-1 now is only used for "small" curves (where the
2711 representation of a field element takes up to 24 bytes); for
2712 larger curves, the field element resulting from ECDH is directly
2713 used as premaster secret.
2714 [Douglas Stebila (Sun Microsystems Laboratories)]
2716 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
2717 curve secp160r1 to the tests.
2718 [Douglas Stebila (Sun Microsystems Laboratories)]
2720 *) Add the possibility to load symbols globally with DSO.
2721 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
2723 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
2724 control of the error stack.
2727 *) Add support for STORE in ENGINE.
2730 *) Add the STORE type. The intention is to provide a common interface
2731 to certificate and key stores, be they simple file-based stores, or
2732 HSM-type store, or LDAP stores, or...
2733 NOTE: The code is currently UNTESTED and isn't really used anywhere.
2736 *) Add a generic structure called OPENSSL_ITEM. This can be used to
2737 pass a list of arguments to any function as well as provide a way
2738 for a function to pass data back to the caller.
2741 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
2742 works like BUF_strdup() but can be used to duplicate a portion of
2743 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
2747 *) Add the function sk_find_ex() which works like sk_find(), but will
2748 return an index to an element even if an exact match couldn't be
2749 found. The index is guaranteed to point at the element where the
2750 searched-for key would be inserted to preserve sorting order.
2753 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
2754 takes an extra flags argument for optional functionality. Currently,
2755 the following flags are defined:
2757 OBJ_BSEARCH_VALUE_ON_NOMATCH
2758 This one gets OBJ_bsearch_ex() to return a pointer to the first
2759 element where the comparing function returns a negative or zero
2762 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
2763 This one gets OBJ_bsearch_ex() to return a pointer to the first
2764 element where the comparing function returns zero. This is useful
2765 if there are more than one element where the comparing function
2769 *) Make it possible to create self-signed certificates with 'openssl ca'
2770 in such a way that the self-signed certificate becomes part of the
2771 CA database and uses the same mechanisms for serial number generation
2772 as all other certificate signing. The new flag '-selfsign' enables
2773 this functionality. Adapt CA.sh and CA.pl.in.
2776 *) Add functionality to check the public key of a certificate request
2777 against a given private. This is useful to check that a certificate
2778 request can be signed by that key (self-signing).
2781 *) Make it possible to have multiple active certificates with the same
2782 subject in the CA index file. This is done only if the keyword
2783 'unique_subject' is set to 'no' in the main CA section (default
2784 if 'CA_default') of the configuration file. The value is saved
2785 with the database itself in a separate index attribute file,
2786 named like the index file with '.attr' appended to the name.
2789 *) Generate muti valued AVAs using '+' notation in config files for
2793 *) Support for nameConstraints certificate extension.
2796 *) Support for policyConstraints certificate extension.
2799 *) Support for policyMappings certificate extension.
2802 *) Make sure the default DSA_METHOD implementation only uses its
2803 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
2804 and change its own handlers to be NULL so as to remove unnecessary
2805 indirection. This lets alternative implementations fallback to the
2806 default implementation more easily.
2809 *) Support for directoryName in GeneralName related extensions
2813 *) Make it possible to link applications using Makefile.shared.
2814 Make that possible even when linking against static libraries!
2817 *) Support for single pass processing for S/MIME signing. This now
2818 means that S/MIME signing can be done from a pipe, in addition
2819 cleartext signing (multipart/signed type) is effectively streaming
2820 and the signed data does not need to be all held in memory.
2822 This is done with a new flag PKCS7_STREAM. When this flag is set
2823 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
2824 is done after the data is output (and digests calculated) in
2825 SMIME_write_PKCS7().
2828 *) Add full support for -rpath/-R, both in shared libraries and
2829 applications, at least on the platforms where it's known how
2833 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
2834 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
2835 will now compute a table of multiples of the generator that
2836 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
2837 faster (notably in the case of a single point multiplication,
2838 scalar * generator).
2839 [Nils Larsch, Bodo Moeller]
2841 *) IPv6 support for certificate extensions. The various extensions
2842 which use the IP:a.b.c.d can now take IPv6 addresses using the
2843 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
2847 *) Added an ENGINE that implements RSA by performing private key
2848 exponentiations with the GMP library. The conversions to and from
2849 GMP's mpz_t format aren't optimised nor are any montgomery forms
2850 cached, and on x86 it appears OpenSSL's own performance has caught up.
2851 However there are likely to be other architectures where GMP could
2852 provide a boost. This ENGINE is not built in by default, but it can be
2853 specified at Configure time and should be accompanied by the necessary
2854 linker additions, eg;
2855 ./config -DOPENSSL_USE_GMP -lgmp
2858 *) "openssl engine" will not display ENGINE/DSO load failure errors when
2859 testing availability of engines with "-t" - the old behaviour is
2860 produced by increasing the feature's verbosity with "-tt".
2863 *) ECDSA routines: under certain error conditions uninitialized BN objects
2864 could be freed. Solution: make sure initialization is performed early
2865 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
2869 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
2870 and DH_METHOD (eg. by ENGINE implementations) to override the normal
2871 software implementations. For DSA and DH, parameter generation can
2872 also be overriden by providing the appropriate method callbacks.
2875 *) Change the "progress" mechanism used in key-generation and
2876 primality testing to functions that take a new BN_GENCB pointer in
2877 place of callback/argument pairs. The new API functions have "_ex"
2878 postfixes and the older functions are reimplemented as wrappers for
2879 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
2880 declarations of the old functions to help (graceful) attempts to
2881 migrate to the new functions. Also, the new key-generation API
2882 functions operate on a caller-supplied key-structure and return
2883 success/failure rather than returning a key or NULL - this is to
2884 help make "keygen" another member function of RSA_METHOD etc.
2886 Example for using the new callback interface:
2888 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
2892 BN_GENCB_set(&my_cb, my_callback, my_arg);
2894 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
2895 /* For the meaning of a, b in calls to my_callback(), see the
2896 * documentation of the function that calls the callback.
2897 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
2898 * my_callback should return 1 if it wants BN_is_prime_ex()
2899 * to continue, or 0 to stop.
2904 *) Change the ZLIB compression method to be stateful, and make it
2905 available to TLS with the number defined in
2906 draft-ietf-tls-compression-04.txt.
2909 *) Add the ASN.1 structures and functions for CertificatePair, which
2910 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
2912 CertificatePair ::= SEQUENCE {
2913 forward [0] Certificate OPTIONAL,
2914 reverse [1] Certificate OPTIONAL,
2915 -- at least one of the pair shall be present -- }
2917 Also implement the PEM functions to read and write certificate
2918 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
2920 This needed to be defined, mostly for the sake of the LDAP
2921 attribute crossCertificatePair, but may prove useful elsewhere as
2925 *) Make it possible to inhibit symlinking of shared libraries in
2926 Makefile.shared, for Cygwin's sake.
2929 *) Extend the BIGNUM API by creating a function
2930 void BN_set_negative(BIGNUM *a, int neg);
2931 and a macro that behave like
2932 int BN_is_negative(const BIGNUM *a);
2934 to avoid the need to access 'a->neg' directly in applications.
2937 *) Implement fast modular reduction for pseudo-Mersenne primes
2938 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
2939 EC_GROUP_new_curve_GFp() will now automatically use this
2941 [Nils Larsch <nla@trustcenter.de>]
2943 *) Add new lock type (CRYPTO_LOCK_BN).
2946 *) Change the ENGINE framework to automatically load engines
2947 dynamically from specific directories unless they could be
2948 found to already be built in or loaded. Move all the
2949 current engines except for the cryptodev one to a new
2951 The engines in engines/ are built as shared libraries if
2952 the "shared" options was given to ./Configure or ./config.
2953 Otherwise, they are inserted in libcrypto.a.
2954 /usr/local/ssl/engines is the default directory for dynamic
2955 engines, but that can be overriden at configure time through
2956 the usual use of --prefix and/or --openssldir, and at run
2957 time with the environment variable OPENSSL_ENGINES.
2958 [Geoff Thorpe and Richard Levitte]
2960 *) Add Makefile.shared, a helper makefile to build shared
2961 libraries. Addapt Makefile.org.
2964 *) Add version info to Win32 DLLs.
2965 [Peter 'Luna' Runestig" <peter@runestig.com>]
2967 *) Add new 'medium level' PKCS#12 API. Certificates and keys
2968 can be added using this API to created arbitrary PKCS#12
2969 files while avoiding the low level API.
2971 New options to PKCS12_create(), key or cert can be NULL and
2972 will then be omitted from the output file. The encryption
2973 algorithm NIDs can be set to -1 for no encryption, the mac
2974 iteration count can be set to 0 to omit the mac.
2976 Enhance pkcs12 utility by making the -nokeys and -nocerts
2977 options work when creating a PKCS#12 file. New option -nomac
2978 to omit the mac, NONE can be set for an encryption algorithm.
2979 New code is modified to use the enhanced PKCS12_create()
2980 instead of the low level API.
2983 *) Extend ASN1 encoder to support indefinite length constructed
2984 encoding. This can output sequences tags and octet strings in
2985 this form. Modify pk7_asn1.c to support indefinite length
2986 encoding. This is experimental and needs additional code to
2987 be useful, such as an ASN1 bio and some enhanced streaming
2990 Extend template encode functionality so that tagging is passed
2991 down to the template encoder.
2994 *) Let 'openssl req' fail if an argument to '-newkey' is not
2995 recognized instead of using RSA as a default.
2998 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
2999 As these are not official, they are not included in "ALL";
3000 the "ECCdraft" ciphersuite group alias can be used to select them.
3001 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
3003 *) Add ECDH engine support.
3004 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
3006 *) Add ECDH in new directory crypto/ecdh/.
3007 [Douglas Stebila (Sun Microsystems Laboratories)]
3009 *) Let BN_rand_range() abort with an error after 100 iterations
3010 without success (which indicates a broken PRNG).
3013 *) Change BN_mod_sqrt() so that it verifies that the input value
3014 is really the square of the return value. (Previously,
3015 BN_mod_sqrt would show GIGO behaviour.)
3018 *) Add named elliptic curves over binary fields from X9.62, SECG,
3019 and WAP/WTLS; add OIDs that were still missing.
3021 [Sheueling Chang Shantz and Douglas Stebila
3022 (Sun Microsystems Laboratories)]
3024 *) Extend the EC library for elliptic curves over binary fields
3025 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
3028 EC_GF2m_simple_method
3032 EC_GROUP_new_curve_GF2m
3033 EC_GROUP_set_curve_GF2m
3034 EC_GROUP_get_curve_GF2m
3035 EC_POINT_set_affine_coordinates_GF2m
3036 EC_POINT_get_affine_coordinates_GF2m
3037 EC_POINT_set_compressed_coordinates_GF2m
3039 Point compression for binary fields is disabled by default for
3040 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
3043 As binary polynomials are represented as BIGNUMs, various members
3044 of the EC_GROUP and EC_POINT data structures can be shared
3045 between the implementations for prime fields and binary fields;
3046 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
3047 are essentially identical to their ..._GFp counterparts.
3048 (For simplicity, the '..._GFp' prefix has been dropped from
3049 various internal method names.)
3051 An internal 'field_div' method (similar to 'field_mul' and
3052 'field_sqr') has been added; this is used only for binary fields.
3054 [Sheueling Chang Shantz and Douglas Stebila
3055 (Sun Microsystems Laboratories)]
3057 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
3058 through methods ('mul', 'precompute_mult').
3060 The generic implementations (now internally called 'ec_wNAF_mul'
3061 and 'ec_wNAF_precomputed_mult') remain the default if these
3062 methods are undefined.
3064 [Sheueling Chang Shantz and Douglas Stebila
3065 (Sun Microsystems Laboratories)]
3067 *) New function EC_GROUP_get_degree, which is defined through
3068 EC_METHOD. For curves over prime fields, this returns the bit
3069 length of the modulus.
3071 [Sheueling Chang Shantz and Douglas Stebila
3072 (Sun Microsystems Laboratories)]
3074 *) New functions EC_GROUP_dup, EC_POINT_dup.
3075 (These simply call ..._new and ..._copy).
3077 [Sheueling Chang Shantz and Douglas Stebila
3078 (Sun Microsystems Laboratories)]
3080 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
3081 Polynomials are represented as BIGNUMs (where the sign bit is not
3082 used) in the following functions [macros]:
3085 BN_GF2m_sub [= BN_GF2m_add]
3086 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
3087 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
3088 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
3090 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
3091 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
3092 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
3093 BN_GF2m_cmp [= BN_ucmp]
3095 (Note that only the 'mod' functions are actually for fields GF(2^m).
3096 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
3098 For some functions, an the irreducible polynomial defining a
3099 field can be given as an 'unsigned int[]' with strictly
3100 decreasing elements giving the indices of those bits that are set;
3101 i.e., p[] represents the polynomial
3102 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
3104 p[0] > p[1] > ... > p[k] = 0.
3105 This applies to the following functions:
3110 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
3111 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
3113 BN_GF2m_mod_sqrt_arr
3114 BN_GF2m_mod_solve_quad_arr
3118 Conversion can be performed by the following functions:
3123 bntest.c has additional tests for binary polynomial arithmetic.
3125 Two implementations for BN_GF2m_mod_div() are available.
3126 The default algorithm simply uses BN_GF2m_mod_inv() and
3127 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
3128 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
3129 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
3131 [Sheueling Chang Shantz and Douglas Stebila
3132 (Sun Microsystems Laboratories)]
3134 *) Add new error code 'ERR_R_DISABLED' that can be used when some
3135 functionality is disabled at compile-time.
3136 [Douglas Stebila <douglas.stebila@sun.com>]
3138 *) Change default behaviour of 'openssl asn1parse' so that more
3139 information is visible when viewing, e.g., a certificate:
3141 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
3142 mode the content of non-printable OCTET STRINGs is output in a
3143 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
3144 avoid the appearance of a printable string.
3145 [Nils Larsch <nla@trustcenter.de>]
3147 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
3149 EC_GROUP_set_asn1_flag()
3150 EC_GROUP_get_asn1_flag()
3151 EC_GROUP_set_point_conversion_form()
3152 EC_GROUP_get_point_conversion_form()
3153 These control ASN1 encoding details:
3154 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
3155 has been set to OPENSSL_EC_NAMED_CURVE.
3156 - Points are encoded in uncompressed form by default; options for
3157 asn1_for are as for point2oct, namely
3158 POINT_CONVERSION_COMPRESSED
3159 POINT_CONVERSION_UNCOMPRESSED
3160 POINT_CONVERSION_HYBRID
3162 Also add 'seed' and 'seed_len' members to EC_GROUP with access
3165 EC_GROUP_get0_seed()
3166 EC_GROUP_get_seed_len()
3167 This is used only for ASN1 purposes (so far).
3168 [Nils Larsch <nla@trustcenter.de>]
3170 *) Add 'field_type' member to EC_METHOD, which holds the NID
3171 of the appropriate field type OID. The new function
3172 EC_METHOD_get_field_type() returns this value.
3173 [Nils Larsch <nla@trustcenter.de>]
3178 EC_POINT_point2hex()
3179 EC_POINT_hex2point()
3180 providing useful interfaces to EC_POINT_point2oct() and
3181 EC_POINT_oct2point().
3182 [Nils Larsch <nla@trustcenter.de>]
3184 *) Change internals of the EC library so that the functions
3185 EC_GROUP_set_generator()
3186 EC_GROUP_get_generator()
3187 EC_GROUP_get_order()
3188 EC_GROUP_get_cofactor()
3189 are implemented directly in crypto/ec/ec_lib.c and not dispatched
3190 to methods, which would lead to unnecessary code duplication when
3191 adding different types of curves.
3192 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
3194 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
3195 arithmetic, and such that modified wNAFs are generated
3196 (which avoid length expansion in many cases).
3199 *) Add a function EC_GROUP_check_discriminant() (defined via
3200 EC_METHOD) that verifies that the curve discriminant is non-zero.
3202 Add a function EC_GROUP_check() that makes some sanity tests
3203 on a EC_GROUP, its generator and order. This includes
3204 EC_GROUP_check_discriminant().
3205 [Nils Larsch <nla@trustcenter.de>]
3207 *) Add ECDSA in new directory crypto/ecdsa/.
3209 Add applications 'openssl ecparam' and 'openssl ecdsa'
3210 (these are based on 'openssl dsaparam' and 'openssl dsa').
3212 ECDSA support is also included in various other files across the
3213 library. Most notably,
3214 - 'openssl req' now has a '-newkey ecdsa:file' option;
3215 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
3216 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
3217 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
3218 them suitable for ECDSA where domain parameters must be
3219 extracted before the specific public key;
3220 - ECDSA engine support has been added.
3221 [Nils Larsch <nla@trustcenter.de>]
3223 *) Include some named elliptic curves, and add OIDs from X9.62,
3224 SECG, and WAP/WTLS. Each curve can be obtained from the new
3226 EC_GROUP_new_by_curve_name(),
3227 and the list of available named curves can be obtained with
3228 EC_get_builtin_curves().
3229 Also add a 'curve_name' member to EC_GROUP objects, which can be
3231 EC_GROUP_set_curve_name()
3232 EC_GROUP_get_curve_name()
3233 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
3235 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
3236 was actually never needed) and in BN_mul(). The removal in BN_mul()
3237 required a small change in bn_mul_part_recursive() and the addition
3238 of the functions bn_cmp_part_words(), bn_sub_part_words() and
3239 bn_add_part_words(), which do the same thing as bn_cmp_words(),
3240 bn_sub_words() and bn_add_words() except they take arrays with
3244 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
3246 *) Cleanse PEM buffers before freeing them since they may contain
3248 [Benjamin Bennett <ben@psc.edu>]
3250 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
3251 a ciphersuite string such as "DEFAULT:RSA" cannot enable
3252 authentication-only ciphersuites.
3255 *) Since AES128 and AES256 share a single mask bit in the logic of
3256 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
3257 kludge to work properly if AES128 is available and AES256 isn't.
3260 *) Expand security boundary to match 1.1.1 module.
3263 *) Remove redundant features: hash file source, editing of test vectors
3264 modify fipsld to use external fips_premain.c signature.
3267 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
3268 run algorithm test programs.
3271 *) Make algorithm test programs more tolerant of whitespace.
3274 *) Have SSL/TLS server implementation tolerate "mismatched" record
3275 protocol version while receiving ClientHello even if the
3276 ClientHello is fragmented. (The server can't insist on the
3277 particular protocol version it has chosen before the ServerHello
3278 message has informed the client about his choice.)
3281 *) Load error codes if they are not already present instead of using a
3282 static variable. This allows them to be cleanly unloaded and reloaded.
3285 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
3287 *) Introduce limits to prevent malicious keys being able to
3288 cause a denial of service. (CVE-2006-2940)
3289 [Steve Henson, Bodo Moeller]
3291 *) Fix ASN.1 parsing of certain invalid structures that can result
3292 in a denial of service. (CVE-2006-2937) [Steve Henson]
3294 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
3295 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
3297 *) Fix SSL client code which could crash if connecting to a
3298 malicious SSLv2 server. (CVE-2006-4343)
3299 [Tavis Ormandy and Will Drewry, Google Security Team]
3301 *) Change ciphersuite string processing so that an explicit
3302 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
3303 will no longer include "AES128-SHA"), and any other similar
3304 ciphersuite (same bitmap) from *other* protocol versions (so that
3305 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
3306 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
3307 changes from 0.9.8b and 0.9.8d.
3310 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
3312 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
3313 (CVE-2006-4339) [Ben Laurie and Google Security Team]
3315 *) Change the Unix randomness entropy gathering to use poll() when
3316 possible instead of select(), since the latter has some
3317 undesirable limitations.
3318 [Darryl Miles via Richard Levitte and Bodo Moeller]
3320 *) Disable rogue ciphersuites:
3322 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
3323 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
3324 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
3326 The latter two were purportedly from
3327 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
3330 Also deactive the remaining ciphersuites from
3331 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
3332 unofficial, and the ID has long expired.
3335 *) Fix RSA blinding Heisenbug (problems sometimes occured on
3336 dual-core machines) and other potential thread-safety issues.
3339 Changes between 0.9.7i and 0.9.7j [04 May 2006]
3341 *) Adapt fipsld and the build system to link against the validated FIPS
3342 module in FIPS mode.
3345 *) Fixes for VC++ 2005 build under Windows.
3348 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
3349 from a Windows bash shell such as MSYS. It is autodetected from the
3350 "config" script when run from a VC++ environment. Modify standard VC++
3351 build to use fipscanister.o from the GNU make build.
3354 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
3356 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
3357 The value now differs depending on if you build for FIPS or not.
3358 BEWARE! A program linked with a shared FIPSed libcrypto can't be
3359 safely run with a non-FIPSed libcrypto, as it may crash because of
3360 the difference induced by this change.
3363 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
3365 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
3366 (part of SSL_OP_ALL). This option used to disable the
3367 countermeasure against man-in-the-middle protocol-version
3368 rollback in the SSL 2.0 server implementation, which is a bad
3369 idea. (CVE-2005-2969)
3371 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
3372 for Information Security, National Institute of Advanced Industrial
3373 Science and Technology [AIST], Japan)]
3375 *) Minimal support for X9.31 signatures and PSS padding modes. This is
3376 mainly for FIPS compliance and not fully integrated at this stage.
3379 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
3380 the exponentiation using a fixed-length exponent. (Otherwise,
3381 the information leaked through timing could expose the secret key
3382 after many signatures; cf. Bleichenbacher's attack on DSA with
3386 *) Make a new fixed-window mod_exp implementation the default for
3387 RSA, DSA, and DH private-key operations so that the sequence of
3388 squares and multiplies and the memory access pattern are
3389 independent of the particular secret key. This will mitigate
3390 cache-timing and potential related attacks.
3392 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
3393 and this is automatically used by BN_mod_exp_mont() if the new flag
3394 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
3395 will use this BN flag for private exponents unless the flag
3396 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
3397 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
3399 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
3401 *) Change the client implementation for SSLv23_method() and
3402 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
3403 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
3404 (Previously, the SSL 2.0 backwards compatible Client Hello
3405 message format would be used even with SSL_OP_NO_SSLv2.)
3408 *) Add support for smime-type MIME parameter in S/MIME messages which some
3412 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
3413 a threadsafe manner. Modify rsa code to use new function and add calls
3414 to dsa and dh code (which had race conditions before).
3417 *) Include the fixed error library code in the C error file definitions
3418 instead of fixing them up at runtime. This keeps the error code
3419 structures constant.
3422 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
3424 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
3427 *) Fixes for newer kerberos headers. NB: the casts are needed because
3428 the 'length' field is signed on one version and unsigned on another
3429 with no (?) obvious way to tell the difference, without these VC++
3430 complains. Also the "definition" of FAR (blank) is no longer included
3431 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
3432 some needed definitions.
3435 *) Undo Cygwin change.
3438 *) Added support for proxy certificates according to RFC 3820.
3439 Because they may be a security thread to unaware applications,
3440 they must be explicitely allowed in run-time. See
3441 docs/HOWTO/proxy_certificates.txt for further information.
3444 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
3446 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
3447 server and client random values. Previously
3448 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
3449 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
3451 This change has negligible security impact because:
3453 1. Server and client random values still have 24 bytes of pseudo random
3456 2. Server and client random values are sent in the clear in the initial
3459 3. The master secret is derived using the premaster secret (48 bytes in
3460 size for static RSA ciphersuites) as well as client server and random
3463 The OpenSSL team would like to thank the UK NISCC for bringing this issue
3466 [Stephen Henson, reported by UK NISCC]
3468 *) Use Windows randomness collection on Cygwin.
3471 *) Fix hang in EGD/PRNGD query when communication socket is closed
3472 prematurely by EGD/PRNGD.
3473 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
3475 *) Prompt for pass phrases when appropriate for PKCS12 input format.
3478 *) Back-port of selected performance improvements from development
3479 branch, as well as improved support for PowerPC platforms.
3482 *) Add lots of checks for memory allocation failure, error codes to indicate
3483 failure and freeing up memory if a failure occurs.
3484 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
3486 *) Add new -passin argument to dgst.
3489 *) Perform some character comparisons of different types in X509_NAME_cmp:
3490 this is needed for some certificates that reencode DNs into UTF8Strings
3491 (in violation of RFC3280) and can't or wont issue name rollover
3495 *) Make an explicit check during certificate validation to see that
3496 the CA setting in each certificate on the chain is correct. As a
3497 side effect always do the following basic checks on extensions,
3498 not just when there's an associated purpose to the check:
3500 - if there is an unhandled critical extension (unless the user
3501 has chosen to ignore this fault)
3502 - if the path length has been exceeded (if one is set at all)
3503 - that certain extensions fit the associated purpose (if one has
3507 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
3509 *) Avoid a race condition when CRLs are checked in a multi threaded
3510 environment. This would happen due to the reordering of the revoked
3511 entries during signature checking and serial number lookup. Now the
3512 encoding is cached and the serial number sort performed under a lock.
3513 Add new STACK function sk_is_sorted().
3516 *) Add Delta CRL to the extension code.
3519 *) Various fixes to s3_pkt.c so alerts are sent properly.
3520 [David Holmes <d.holmes@f5.com>]
3522 *) Reduce the chances of duplicate issuer name and serial numbers (in
3523 violation of RFC3280) using the OpenSSL certificate creation utilities.
3524 This is done by creating a random 64 bit value for the initial serial
3525 number when a serial number file is created or when a self signed
3526 certificate is created using 'openssl req -x509'. The initial serial
3527 number file is created using 'openssl x509 -next_serial' in CA.pl
3528 rather than being initialized to 1.
3531 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
3533 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
3534 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
3535 [Joe Orton, Steve Henson]
3537 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
3539 [Joe Orton, Steve Henson]
3541 *) Make it possible to have multiple active certificates with the same
3542 subject in the CA index file. This is done only if the keyword
3543 'unique_subject' is set to 'no' in the main CA section (default
3544 if 'CA_default') of the configuration file. The value is saved
3545 with the database itself in a separate index attribute file,
3546 named like the index file with '.attr' appended to the name.
3549 *) X509 verify fixes. Disable broken certificate workarounds when
3550 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
3551 keyUsage extension present. Don't accept CRLs with unhandled critical
3552 extensions: since verify currently doesn't process CRL extensions this
3553 rejects a CRL with *any* critical extensions. Add new verify error codes
3557 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
3558 A clarification of RFC2560 will require the use of OCTET STRINGs and
3559 some implementations cannot handle the current raw format. Since OpenSSL
3560 copies and compares OCSP nonces as opaque blobs without any attempt at
3561 parsing them this should not create any compatibility issues.
3564 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
3565 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
3566 this HMAC (and other) operations are several times slower than OpenSSL
3570 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
3571 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3573 *) Use the correct content when signing type "other".
3576 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
3578 *) Fix various bugs revealed by running the NISCC test suite:
3580 Stop out of bounds reads in the ASN1 code when presented with
3581 invalid tags (CVE-2003-0543 and CVE-2003-0544).
3583 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
3585 If verify callback ignores invalid public key errors don't try to check
3586 certificate signature with the NULL public key.
3590 *) New -ignore_err option in ocsp application to stop the server
3591 exiting on the first error in a request.
3594 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
3595 if the server requested one: as stated in TLS 1.0 and SSL 3.0
3599 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
3600 extra data after the compression methods not only for TLS 1.0
3601 but also for SSL 3.0 (as required by the specification).
3602 [Bodo Moeller; problem pointed out by Matthias Loepfe]
3604 *) Change X509_certificate_type() to mark the key as exported/exportable
3605 when it's 512 *bits* long, not 512 bytes.
3608 *) Change AES_cbc_encrypt() so it outputs exact multiple of
3609 blocks during encryption.
3612 *) Various fixes to base64 BIO and non blocking I/O. On write
3613 flushes were not handled properly if the BIO retried. On read
3614 data was not being buffered properly and had various logic bugs.
3615 This also affects blocking I/O when the data being decoded is a
3619 *) Various S/MIME bugfixes and compatibility changes:
3620 output correct application/pkcs7 MIME type if
3621 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
3622 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
3623 of files as .eml work). Correctly handle very long lines in MIME
3627 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
3629 *) Countermeasure against the Klima-Pokorny-Rosa extension of
3630 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
3631 a protocol version number mismatch like a decryption error
3632 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
3635 *) Turn on RSA blinding by default in the default implementation
3636 to avoid a timing attack. Applications that don't want it can call
3637 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
3638 They would be ill-advised to do so in most cases.
3639 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
3641 *) Change RSA blinding code so that it works when the PRNG is not
3642 seeded (in this case, the secret RSA exponent is abused as
3643 an unpredictable seed -- if it is not unpredictable, there
3644 is no point in blinding anyway). Make RSA blinding thread-safe
3645 by remembering the creator's thread ID in rsa->blinding and
3646 having all other threads use local one-time blinding factors
3647 (this requires more computation than sharing rsa->blinding, but
3648 avoids excessive locking; and if an RSA object is not shared
3649 between threads, blinding will still be very fast).
3652 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
3653 ENGINE as defaults for all supported algorithms irrespective of
3654 the 'flags' parameter. 'flags' is now honoured, so applications
3655 should make sure they are passing it correctly.
3658 *) Target "mingw" now allows native Windows code to be generated in
3659 the Cygwin environment as well as with the MinGW compiler.
3662 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
3664 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
3665 via timing by performing a MAC computation even if incorrrect
3666 block cipher padding has been found. This is a countermeasure
3667 against active attacks where the attacker has to distinguish
3668 between bad padding and a MAC verification error. (CVE-2003-0078)
3670 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
3671 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
3672 Martin Vuagnoux (EPFL, Ilion)]
3674 *) Make the no-err option work as intended. The intention with no-err
3675 is not to have the whole error stack handling routines removed from
3676 libcrypto, it's only intended to remove all the function name and
3677 reason texts, thereby removing some of the footprint that may not
3678 be interesting if those errors aren't displayed anyway.
3680 NOTE: it's still possible for any application or module to have it's
3681 own set of error texts inserted. The routines are there, just not
3682 used by default when no-err is given.
3685 *) Add support for FreeBSD on IA64.
3686 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
3688 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
3689 Kerberos function mit_des_cbc_cksum(). Before this change,
3690 the value returned by DES_cbc_cksum() was like the one from
3691 mit_des_cbc_cksum(), except the bytes were swapped.
3692 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
3694 *) Allow an application to disable the automatic SSL chain building.
3695 Before this a rather primitive chain build was always performed in
3696 ssl3_output_cert_chain(): an application had no way to send the
3697 correct chain if the automatic operation produced an incorrect result.
3699 Now the chain builder is disabled if either:
3701 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
3703 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
3705 The reasoning behind this is that an application would not want the
3706 auto chain building to take place if extra chain certificates are
3707 present and it might also want a means of sending no additional
3708 certificates (for example the chain has two certificates and the
3712 *) Add the possibility to build without the ENGINE framework.
3713 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3715 *) Under Win32 gmtime() can return NULL: check return value in
3716 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
3719 *) DSA routines: under certain error conditions uninitialized BN objects
3720 could be freed. Solution: make sure initialization is performed early
3721 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
3722 Nils Larsch <nla@trustcenter.de> via PR#459)
3725 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
3726 checked on reconnect on the client side, therefore session resumption
3727 could still fail with a "ssl session id is different" error. This
3728 behaviour is masked when SSL_OP_ALL is used due to
3729 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
3730 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3731 followup to PR #377.
3734 *) IA-32 assembler support enhancements: unified ELF targets, support
3735 for SCO/Caldera platforms, fix for Cygwin shared build.
3738 *) Add support for FreeBSD on sparc64. As a consequence, support for
3739 FreeBSD on non-x86 processors is separate from x86 processors on
3740 the config script, much like the NetBSD support.
3741 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
3743 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
3745 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
3748 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
3749 code (06) was taken as the first octet of the session ID and the last
3750 octet was ignored consequently. As a result SSLv2 client side session
3751 caching could not have worked due to the session ID mismatch between
3753 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3757 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
3758 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
3762 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
3763 seems that in spite of existing for more than a year, many application
3764 author have done nothing to provide the necessary callbacks, which
3765 means that this particular engine will not work properly anywhere.
3766 This is a very unfortunate situation which forces us, in the name
3767 of usability, to give the hw_ncipher.c a static lock, which is part
3769 NOTE: This is for the 0.9.7 series ONLY. This hack will never
3770 appear in 0.9.8 or later. We EXPECT application authors to have
3771 dealt properly with this when 0.9.8 is released (unless we actually
3772 make such changes in the libcrypto locking code that changes will
3773 have to be made anyway).
3776 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
3777 octets have been read, EOF or an error occurs. Without this change
3778 some truncated ASN1 structures will not produce an error.
3781 *) Disable Heimdal support, since it hasn't been fully implemented.
3782 Still give the possibility to force the use of Heimdal, but with
3783 warnings and a request that patches get sent to openssl-dev.
3786 *) Add the VC-CE target, introduce the WINCE sysname, and add
3787 INSTALL.WCE and appropriate conditionals to make it build.
3788 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3790 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
3791 cygssl-x.y.z.dll, where x, y and z are the major, minor and
3792 edit numbers of the version.
3793 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
3795 *) Introduce safe string copy and catenation functions
3796 (BUF_strlcpy() and BUF_strlcat()).
3797 [Ben Laurie (CHATS) and Richard Levitte]
3799 *) Avoid using fixed-size buffers for one-line DNs.
3800 [Ben Laurie (CHATS)]
3802 *) Add BUF_MEM_grow_clean() to avoid information leakage when
3803 resizing buffers containing secrets, and use where appropriate.
3804 [Ben Laurie (CHATS)]
3806 *) Avoid using fixed size buffers for configuration file location.
3807 [Ben Laurie (CHATS)]
3809 *) Avoid filename truncation for various CA files.
3810 [Ben Laurie (CHATS)]
3812 *) Use sizeof in preference to magic numbers.
3813 [Ben Laurie (CHATS)]
3815 *) Avoid filename truncation in cert requests.
3816 [Ben Laurie (CHATS)]
3818 *) Add assertions to check for (supposedly impossible) buffer
3820 [Ben Laurie (CHATS)]
3822 *) Don't cache truncated DNS entries in the local cache (this could
3823 potentially lead to a spoofing attack).
3824 [Ben Laurie (CHATS)]
3826 *) Fix various buffers to be large enough for hex/decimal
3827 representations in a platform independent manner.
3828 [Ben Laurie (CHATS)]
3830 *) Add CRYPTO_realloc_clean() to avoid information leakage when
3831 resizing buffers containing secrets, and use where appropriate.
3832 [Ben Laurie (CHATS)]
3834 *) Add BIO_indent() to avoid much slightly worrying code to do
3836 [Ben Laurie (CHATS)]
3838 *) Convert sprintf()/BIO_puts() to BIO_printf().
3839 [Ben Laurie (CHATS)]
3841 *) buffer_gets() could terminate with the buffer only half
3843 [Ben Laurie (CHATS)]
3845 *) Add assertions to prevent user-supplied crypto functions from
3846 overflowing internal buffers by having large block sizes, etc.
3847 [Ben Laurie (CHATS)]
3849 *) New OPENSSL_assert() macro (similar to assert(), but enabled
3851 [Ben Laurie (CHATS)]
3853 *) Eliminate unused copy of key in RC4.
3854 [Ben Laurie (CHATS)]
3856 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
3857 [Ben Laurie (CHATS)]
3859 *) Fix off-by-one error in EGD path.
3860 [Ben Laurie (CHATS)]
3862 *) If RANDFILE path is too long, ignore instead of truncating.
3863 [Ben Laurie (CHATS)]
3865 *) Eliminate unused and incorrectly sized X.509 structure
3867 [Ben Laurie (CHATS)]
3869 *) Eliminate unused and dangerous function knumber().
3870 [Ben Laurie (CHATS)]
3872 *) Eliminate unused and dangerous structure, KSSL_ERR.
3873 [Ben Laurie (CHATS)]
3875 *) Protect against overlong session ID context length in an encoded
3876 session object. Since these are local, this does not appear to be
3878 [Ben Laurie (CHATS)]
3880 *) Change from security patch (see 0.9.6e below) that did not affect
3881 the 0.9.6 release series:
3883 Remote buffer overflow in SSL3 protocol - an attacker could
3884 supply an oversized master key in Kerberos-enabled versions.
3886 [Ben Laurie (CHATS)]
3888 *) Change the SSL kerb5 codes to match RFC 2712.
3891 *) Make -nameopt work fully for req and add -reqopt switch.
3892 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
3894 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
3895 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
3897 *) Make sure tests can be performed even if the corresponding algorithms
3898 have been removed entirely. This was also the last step to make
3899 OpenSSL compilable with DJGPP under all reasonable conditions.
3900 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
3902 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
3903 to allow version independent disabling of normally unselected ciphers,
3904 which may be activated as a side-effect of selecting a single cipher.
3906 (E.g., cipher list string "RSA" enables ciphersuites that are left
3907 out of "ALL" because they do not provide symmetric encryption.
3908 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
3909 [Lutz Jaenicke, Bodo Moeller]
3911 *) Add appropriate support for separate platform-dependent build
3912 directories. The recommended way to make a platform-dependent
3913 build directory is the following (tested on Linux), maybe with
3916 # Place yourself outside of the OpenSSL source tree. In
3917 # this example, the environment variable OPENSSL_SOURCE
3918 # is assumed to contain the absolute OpenSSL source directory.
3919 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
3920 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
3921 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
3922 mkdir -p `dirname $F`
3923 ln -s $OPENSSL_SOURCE/$F $F
3926 To be absolutely sure not to disturb the source tree, a "make clean"
3927 is a good thing. If it isn't successfull, don't worry about it,
3928 it probably means the source directory is very clean.
3931 *) Make sure any ENGINE control commands make local copies of string
3932 pointers passed to them whenever necessary. Otherwise it is possible
3933 the caller may have overwritten (or deallocated) the original string
3934 data when a later ENGINE operation tries to use the stored values.
3935 [Götz Babin-Ebell <babinebell@trustcenter.de>]
3937 *) Improve diagnostics in file reading and command-line digests.
3938 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
3940 *) Add AES modes CFB and OFB to the object database. Correct an
3941 error in AES-CFB decryption.
3944 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
3945 allows existing EVP_CIPHER_CTX structures to be reused after
3946 calling EVP_*Final(). This behaviour is used by encryption
3947 BIOs and some applications. This has the side effect that
3948 applications must explicitly clean up cipher contexts with
3949 EVP_CIPHER_CTX_cleanup() or they will leak memory.
3952 *) Check the values of dna and dnb in bn_mul_recursive before calling
3953 bn_mul_comba (a non zero value means the a or b arrays do not contain
3954 n2 elements) and fallback to bn_mul_normal if either is not zero.
3957 *) Fix escaping of non-ASCII characters when using the -subj option
3958 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
3961 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
3962 form for "surname", serialNumber has no short form.
3963 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
3964 therefore remove "mail" short name for "internet 7".
3965 The OID for unique identifiers in X509 certificates is
3966 x500UniqueIdentifier, not uniqueIdentifier.
3967 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
3970 *) Add an "init" command to the ENGINE config module and auto initialize
3971 ENGINEs. Without any "init" command the ENGINE will be initialized
3972 after all ctrl commands have been executed on it. If init=1 the
3973 ENGINE is initailized at that point (ctrls before that point are run
3974 on the uninitialized ENGINE and after on the initialized one). If
3975 init=0 then the ENGINE will not be iniatialized at all.
3978 *) Fix the 'app_verify_callback' interface so that the user-defined
3979 argument is actually passed to the callback: In the
3980 SSL_CTX_set_cert_verify_callback() prototype, the callback
3981 declaration has been changed from
3984 int (*cb)(X509_STORE_CTX *,void *);
3985 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
3986 i=s->ctx->app_verify_callback(&ctx)
3987 has been changed into
3988 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
3990 To update applications using SSL_CTX_set_cert_verify_callback(),
3991 a dummy argument can be added to their callback functions.
3992 [D. K. Smetters <smetters@parc.xerox.com>]
3994 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
3995 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
3997 *) Add and OPENSSL_LOAD_CONF define which will cause
3998 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
3999 This allows older applications to transparently support certain
4000 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
4001 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
4002 load the config file and OPENSSL_add_all_algorithms_conf() which will
4003 always load it have also been added.
4006 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
4007 Adjust NIDs and EVP layer.
4008 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
4010 *) Config modules support in openssl utility.
4012 Most commands now load modules from the config file,
4013 though in a few (such as version) this isn't done
4014 because it couldn't be used for anything.
4016 In the case of ca and req the config file used is
4017 the same as the utility itself: that is the -config
4018 command line option can be used to specify an
4022 *) Move default behaviour from OPENSSL_config(). If appname is NULL
4023 use "openssl_conf" if filename is NULL use default openssl config file.
4026 *) Add an argument to OPENSSL_config() to allow the use of an alternative
4027 config section name. Add a new flag to tolerate a missing config file
4028 and move code to CONF_modules_load_file().
4031 *) Support for crypto accelerator cards from Accelerated Encryption
4032 Processing, www.aep.ie. (Use engine 'aep')
4033 The support was copied from 0.9.6c [engine] and adapted/corrected
4034 to work with the new engine framework.
4035 [AEP Inc. and Richard Levitte]
4037 *) Support for SureWare crypto accelerator cards from Baltimore
4038 Technologies. (Use engine 'sureware')
4039 The support was copied from 0.9.6c [engine] and adapted
4040 to work with the new engine framework.
4043 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
4044 make the newer ENGINE framework commands for the CHIL engine work.
4045 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
4047 *) Make it possible to produce shared libraries on ReliantUNIX.
4048 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
4050 *) Add the configuration target debug-linux-ppro.
4051 Make 'openssl rsa' use the general key loading routines
4052 implemented in apps.c, and make those routines able to
4053 handle the key format FORMAT_NETSCAPE and the variant
4055 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
4057 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
4058 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
4060 *) Add -keyform to rsautl, and document -engine.
4061 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
4063 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
4064 BIO_R_NO_SUCH_FILE error code rather than the generic
4065 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
4068 *) Add new functions
4070 ERR_peek_last_error_line
4071 ERR_peek_last_error_line_data.
4072 These are similar to
4075 ERR_peek_error_line_data,
4076 but report on the latest error recorded rather than the first one
4077 still in the error queue.
4078 [Ben Laurie, Bodo Moeller]
4080 *) default_algorithms option in ENGINE config module. This allows things
4082 default_algorithms = ALL
4083 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
4086 *) Prelminary ENGINE config module.
4089 *) New experimental application configuration code.
4092 *) Change the AES code to follow the same name structure as all other
4093 symmetric ciphers, and behave the same way. Move everything to
4094 the directory crypto/aes, thereby obsoleting crypto/rijndael.
4095 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
4097 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
4098 [Ben Laurie and Theo de Raadt]
4100 *) Add option to output public keys in req command.
4101 [Massimiliano Pala madwolf@openca.org]
4103 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
4104 (up to about 10% better than before for P-192 and P-224).
4107 *) New functions/macros
4109 SSL_CTX_set_msg_callback(ctx, cb)
4110 SSL_CTX_set_msg_callback_arg(ctx, arg)
4111 SSL_set_msg_callback(ssl, cb)
4112 SSL_set_msg_callback_arg(ssl, arg)
4114 to request calling a callback function
4116 void cb(int write_p, int version, int content_type,
4117 const void *buf, size_t len, SSL *ssl, void *arg)
4119 whenever a protocol message has been completely received
4120 (write_p == 0) or sent (write_p == 1). Here 'version' is the
4121 protocol version according to which the SSL library interprets
4122 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
4123 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
4124 the content type as defined in the SSL 3.0/TLS 1.0 protocol
4125 specification (change_cipher_spec(20), alert(21), handshake(22)).
4126 'buf' and 'len' point to the actual message, 'ssl' to the
4127 SSL object, and 'arg' is the application-defined value set by
4128 SSL[_CTX]_set_msg_callback_arg().
4130 'openssl s_client' and 'openssl s_server' have new '-msg' options
4131 to enable a callback that displays all protocol messages.
4134 *) Change the shared library support so shared libraries are built as
4135 soon as the corresponding static library is finished, and thereby get
4136 openssl and the test programs linked against the shared library.
4137 This still only happens when the keyword "shard" has been given to
4138 the configuration scripts.
4140 NOTE: shared library support is still an experimental thing, and
4141 backward binary compatibility is still not guaranteed.
4142 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
4144 *) Add support for Subject Information Access extension.
4145 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
4147 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
4148 additional bytes when new memory had to be allocated, not just
4149 when reusing an existing buffer.
4152 *) New command line and configuration option 'utf8' for the req command.
4153 This allows field values to be specified as UTF8 strings.
4156 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
4157 runs for the former and machine-readable output for the latter.
4160 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
4161 of the e-mail address in the DN (i.e., it will go into a certificate
4162 extension only). The new configuration file option 'email_in_dn = no'
4163 has the same effect.
4164 [Massimiliano Pala madwolf@openca.org]
4166 *) Change all functions with names starting with des_ to be starting
4167 with DES_ instead. Add wrappers that are compatible with libdes,
4168 but are named _ossl_old_des_*. Finally, add macros that map the
4169 des_* symbols to the corresponding _ossl_old_des_* if libdes
4170 compatibility is desired. If OpenSSL 0.9.6c compatibility is
4171 desired, the des_* symbols will be mapped to DES_*, with one
4174 Since we provide two compatibility mappings, the user needs to
4175 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
4176 compatibility is desired. The default (i.e., when that macro
4177 isn't defined) is OpenSSL 0.9.6c compatibility.
4179 There are also macros that enable and disable the support of old
4180 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
4181 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
4182 are defined, the default will apply: to support the old des routines.
4184 In either case, one must include openssl/des.h to get the correct
4185 definitions. Do not try to just include openssl/des_old.h, that
4188 NOTE: This is a major break of an old API into a new one. Software
4189 authors are encouraged to switch to the DES_ style functions. Some
4190 time in the future, des_old.h and the libdes compatibility functions
4191 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
4192 default), and then completely removed.
4195 *) Test for certificates which contain unsupported critical extensions.
4196 If such a certificate is found during a verify operation it is
4197 rejected by default: this behaviour can be overridden by either
4198 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
4199 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
4200 X509_supported_extension() has also been added which returns 1 if a
4201 particular extension is supported.
4204 *) Modify the behaviour of EVP cipher functions in similar way to digests
4205 to retain compatibility with existing code.
4208 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
4209 compatibility with existing code. In particular the 'ctx' parameter does
4210 not have to be to be initialized before the call to EVP_DigestInit() and
4211 it is tidied up after a call to EVP_DigestFinal(). New function
4212 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
4213 EVP_MD_CTX_copy() changed to not require the destination to be
4214 initialized valid and new function EVP_MD_CTX_copy_ex() added which
4215 requires the destination to be valid.
4217 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
4218 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
4221 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
4222 so that complete 'Handshake' protocol structures are kept in memory
4223 instead of overwriting 'msg_type' and 'length' with 'body' data.
4226 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
4227 [Massimo Santin via Richard Levitte]
4229 *) Major restructuring to the underlying ENGINE code. This includes
4230 reduction of linker bloat, separation of pure "ENGINE" manipulation
4231 (initialisation, etc) from functionality dealing with implementations
4232 of specific crypto iterfaces. This change also introduces integrated
4233 support for symmetric ciphers and digest implementations - so ENGINEs
4234 can now accelerate these by providing EVP_CIPHER and EVP_MD
4235 implementations of their own. This is detailed in crypto/engine/README
4236 as it couldn't be adequately described here. However, there are a few
4237 API changes worth noting - some RSA, DSA, DH, and RAND functions that
4238 were changed in the original introduction of ENGINE code have now
4239 reverted back - the hooking from this code to ENGINE is now a good
4240 deal more passive and at run-time, operations deal directly with
4241 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
4242 dereferencing through an ENGINE pointer any more. Also, the ENGINE
4243 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
4244 they were not being used by the framework as there is no concept of a
4245 BIGNUM_METHOD and they could not be generalised to the new
4246 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
4247 ENGINE_cpy() has been removed as it cannot be consistently defined in
4251 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
4254 *) Change mkdef.pl to sort symbols that get the same entry number,
4255 and make sure the automatically generated functions ERR_load_*
4256 become part of libeay.num as well.
4259 *) New function SSL_renegotiate_pending(). This returns true once
4260 renegotiation has been requested (either SSL_renegotiate() call
4261 or HelloRequest/ClientHello receveived from the peer) and becomes
4262 false once a handshake has been completed.
4263 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
4264 sends a HelloRequest, but does not ensure that a handshake takes
4265 place. SSL_renegotiate_pending() is useful for checking if the
4266 client has followed the request.)
4269 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
4270 By default, clients may request session resumption even during
4271 renegotiation (if session ID contexts permit); with this option,
4272 session resumption is possible only in the first handshake.
4274 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
4275 more bits available for options that should not be part of
4276 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
4279 *) Add some demos for certificate and certificate request creation.
4282 *) Make maximum certificate chain size accepted from the peer application
4283 settable (SSL*_get/set_max_cert_list()), as proposed by
4284 "Douglas E. Engert" <deengert@anl.gov>.
4287 *) Add support for shared libraries for Unixware-7
4288 (Boyd Lynn Gerber <gerberb@zenez.com>).
4291 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
4292 be done prior to destruction. Use this to unload error strings from
4293 ENGINEs that load their own error strings. NB: This adds two new API
4294 functions to "get" and "set" this destroy handler in an ENGINE.
4297 *) Alter all existing ENGINE implementations (except "openssl" and
4298 "openbsd") to dynamically instantiate their own error strings. This
4299 makes them more flexible to be built both as statically-linked ENGINEs
4300 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
4301 Also, add stub code to each that makes building them as self-contained
4302 shared-libraries easier (see README.ENGINE).
4305 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
4306 implementations into applications that are completely implemented in
4307 self-contained shared-libraries. The "dynamic" ENGINE exposes control
4308 commands that can be used to configure what shared-library to load and
4309 to control aspects of the way it is handled. Also, made an update to
4310 the README.ENGINE file that brings its information up-to-date and
4311 provides some information and instructions on the "dynamic" ENGINE
4312 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
4315 *) Make it possible to unload ranges of ERR strings with a new
4316 "ERR_unload_strings" function.
4319 *) Add a copy() function to EVP_MD.
4322 *) Make EVP_MD routines take a context pointer instead of just the
4323 md_data void pointer.
4326 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
4327 that the digest can only process a single chunk of data
4328 (typically because it is provided by a piece of
4329 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
4330 is only going to provide a single chunk of data, and hence the
4331 framework needn't accumulate the data for oneshot drivers.
4334 *) As with "ERR", make it possible to replace the underlying "ex_data"
4335 functions. This change also alters the storage and management of global
4336 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
4337 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
4338 index counters. The API functions that use this state have been changed
4339 to take a "class_index" rather than pointers to the class's local STACK
4340 and counter, and there is now an API function to dynamically create new
4341 classes. This centralisation allows us to (a) plug a lot of the
4342 thread-safety problems that existed, and (b) makes it possible to clean
4343 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
4344 such data would previously have always leaked in application code and
4345 workarounds were in place to make the memory debugging turn a blind eye
4346 to it. Application code that doesn't use this new function will still
4347 leak as before, but their memory debugging output will announce it now
4348 rather than letting it slide.
4350 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
4351 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
4352 has a return value to indicate success or failure.
4355 *) Make it possible to replace the underlying "ERR" functions such that the
4356 global state (2 LHASH tables and 2 locks) is only used by the "default"
4357 implementation. This change also adds two functions to "get" and "set"
4358 the implementation prior to it being automatically set the first time
4359 any other ERR function takes place. Ie. an application can call "get",
4360 pass the return value to a module it has just loaded, and that module
4361 can call its own "set" function using that value. This means the
4362 module's "ERR" operations will use (and modify) the error state in the
4363 application and not in its own statically linked copy of OpenSSL code.
4366 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
4367 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
4368 the operation, and provides a more encapsulated way for external code
4369 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
4370 to use these functions rather than manually incrementing the counts.
4372 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
4375 *) Add EVP test program.
4378 *) Add symmetric cipher support to ENGINE. Expect the API to change!
4381 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
4382 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
4383 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
4384 These allow a CRL to be built without having to access X509_CRL fields
4385 directly. Modify 'ca' application to use new functions.
4388 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
4389 bug workarounds. Rollback attack detection is a security feature.
4390 The problem will only arise on OpenSSL servers when TLSv1 is not
4391 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
4392 Software authors not wanting to support TLSv1 will have special reasons
4393 for their choice and can explicitly enable this option.
4394 [Bodo Moeller, Lutz Jaenicke]
4396 *) Rationalise EVP so it can be extended: don't include a union of
4397 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
4398 (similar to those existing for EVP_CIPHER_CTX).
4403 EVP_MD_CTX_init(&md); /* new function call */
4404 EVP_DigestInit(&md, EVP_sha1());
4405 EVP_DigestUpdate(&md, in, len);
4406 EVP_DigestFinal(&md, out, NULL);
4407 EVP_MD_CTX_cleanup(&md); /* new function call */
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