5 Changes between 1.0.1 and 1.1.0 [xx XXX xxxx]
7 *) Add support for HMAC DRBG from SP800-90. Update algorithm and POST
11 *) Add GCM support to TLS library. Some custom code is needed to split
12 the IV between the fixed (from PRF) and explicit (from TLS record)
13 portions. This adds all GCM ciphersuites supported by RFC5288 and
14 RFC5289. Generalise some AES* cipherstrings to inlclude GCM and
15 add a special AESGCM string for GCM only.
18 *) Expand range of ctrls for AES GCM. Permit setting invocation
19 field on decrypt and retrieval of invocation field only on encrypt.
22 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
23 As required by RFC5289 these ciphersuites cannot be used if for
24 versions of TLS earlier than 1.2.
27 *) Add functions FIPS_module_version() and FIPS_module_version_text()
28 to return numberical and string versions of the FIPS module number.
31 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
32 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implmeneted
33 outside the validated module in the FIPS capable OpenSSL.
36 *) Minor change to DRBG entropy callback semantics. In some cases
37 there is no mutiple of the block length between min_len and
38 max_len. Allow the callback to return more than max_len bytes
39 of entropy but discard any extra: it is the callback's responsibility
40 to ensure that the extra data discarded does not impact the
41 requested amount of entropy.
44 *) Add PRNG security strength checks to RSA, DSA and ECDSA using
45 information in FIPS186-3, SP800-57 and SP800-131A.
48 *) CCM support via EVP. Interface is very similar to GCM case except we
49 must supply all data in one chunk (i.e. no update, final) and the
50 message length must be supplied if AAD is used. Add algorithm test
54 *) Initial version of POST overhaul. Add POST callback to allow the status
55 of POST to be monitored and/or failures induced. Modify fips_test_suite
56 to use callback. Always run all selftests even if one fails.
59 *) XTS support including algorithm test driver in the fips_gcmtest program.
60 Note: this does increase the maximum key length from 32 to 64 bytes but
61 there should be no binary compatibility issues as existing applications
62 will never use XTS mode.
65 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
66 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
67 performs algorithm blocking for unapproved PRNG types. Also do not
68 set PRNG type in FIPS_mode_set(): leave this to the application.
69 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
70 the standard OpenSSL PRNG: set additional data to a date time vector.
73 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
74 This shouldn't present any incompatibility problems because applications
75 shouldn't be using these directly and any that are will need to rethink
76 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
79 *) Extensive self tests and health checking required by SP800-90 DRBG.
80 Remove strength parameter from FIPS_drbg_instantiate and always
81 instantiate at maximum supported strength.
84 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
87 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
90 *) New function DH_compute_key_padded() to compute a DH key and pad with
91 leading zeroes if needed: this complies with SP800-56A et al.
94 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
95 anything, incomplete, subject to change and largely untested at present.
98 *) Modify fipscanisteronly build option to only build the necessary object
99 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
102 *) Add experimental option FIPSSYMS to give all symbols in
103 fipscanister.o and FIPS or fips prefix. This will avoid
104 conflicts with future versions of OpenSSL. Add perl script
105 util/fipsas.pl to preprocess assembly language source files
106 and rename any affected symbols.
109 *) Add selftest checks and algorithm block of non-fips algorithms in
110 FIPS mode. Remove DES2 from selftests.
113 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
114 return internal method without any ENGINE dependencies. Add new
115 tiny fips sign and verify functions.
118 *) New build option no-ec2m to disable characteristic 2 code.
121 *) New build option "fipscanisteronly". This only builds fipscanister.o
122 and (currently) associated fips utilities. Uses the file Makefile.fips
123 instead of Makefile.org as the prototype.
126 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
127 Update fips_gcmtest to use IV generator.
130 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
131 setting output buffer to NULL. The *Final function must be
132 called although it will not retrieve any additional data. The tag
133 can be set or retrieved with a ctrl. The IV length is by default 12
134 bytes (96 bits) but can be set to an alternative value. If the IV
135 length exceeds the maximum IV length (currently 16 bytes) it cannot be
139 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
140 underlying do_cipher function handles all cipher semantics itself
141 including padding and finalisation. This is useful if (for example)
142 an ENGINE cipher handles block padding itself. The behaviour of
143 do_cipher is subtly changed if this flag is set: the return value
144 is the number of characters written to the output buffer (zero is
145 no longer an error code) or a negative error code. Also if the
146 input buffer is NULL and length 0 finalisation should be performed.
149 *) If a candidate issuer certificate is already part of the constructed
150 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
153 *) Improve forward-security support: add functions
155 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
156 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
158 for use by SSL/TLS servers; the callback function will be called whenever a
159 new session is created, and gets to decide whether the session may be
160 cached to make it resumable (return 0) or not (return 1). (As by the
161 SSL/TLS protocol specifications, the session_id sent by the server will be
162 empty to indicate that the session is not resumable; also, the server will
163 not generate RFC 4507 (RFC 5077) session tickets.)
165 A simple reasonable callback implementation is to return is_forward_secure.
166 This parameter will be set to 1 or 0 depending on the ciphersuite selected
167 by the SSL/TLS server library, indicating whether it can provide forward
169 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
171 *) Add Next Protocol Negotiation,
172 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
173 disabled with a no-npn flag to config or Configure. Code donated
175 [Adam Langley <agl@google.com> and Ben Laurie]
177 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
178 all platforms. Move ssize_t definition from e_os.h to the public
179 header file e_os2.h as it now appears in public header file cms.h
182 *) New function OPENSSL_gmtime_diff to find the difference in days
183 and seconds between two tm structures. This will be used to provide
184 additional functionality for ASN1_TIME.
187 *) New -sigopt option to the ca, req and x509 utilities. Additional
188 signature parameters can be passed using this option and in
192 *) Add RSA PSS signing function. This will generate and set the
193 appropriate AlgorithmIdentifiers for PSS based on those in the
194 corresponding EVP_MD_CTX structure. No application support yet.
197 *) Support for companion algorithm specific ASN1 signing routines.
198 New function ASN1_item_sign_ctx() signs a pre-initialised
199 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
200 the appropriate parameters.
203 *) Add new algorithm specific ASN1 verification initialisation function
204 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
205 handling will be the same no matter what EVP_PKEY_METHOD is used.
206 Add a PSS handler to support verification of PSS signatures: checked
207 against a number of sample certificates.
210 *) Add signature printing for PSS. Add PSS OIDs.
211 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
213 *) Add algorithm specific signature printing. An individual ASN1 method
214 can now print out signatures instead of the standard hex dump.
216 More complex signatures (e.g. PSS) can print out more meaningful
217 information. Include DSA version that prints out the signature
221 *) Add -trusted_first option which attempts to find certificates in the
222 trusted store even if an untrusted chain is also supplied.
225 *) Initial experimental support for explicitly trusted non-root CAs.
226 OpenSSL still tries to build a complete chain to a root but if an
227 intermediate CA has a trust setting included that is used. The first
228 setting is used: whether to trust or reject.
231 *) New -verify_name option in command line utilities to set verification
235 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
236 Add CMAC pkey methods.
239 *) Experiemental regnegotiation in s_server -www mode. If the client
240 browses /reneg connection is renegotiated. If /renegcert it is
241 renegotiated requesting a certificate.
244 *) Add an "external" session cache for debugging purposes to s_server. This
245 should help trace issues which normally are only apparent in deployed
246 multi-process servers.
249 *) Experiemental password based recipient info support for CMS library:
250 implementing RFC3211.
253 *) Split password based encryption into PBES2 and PBKDF2 functions. This
254 neatly separates the code into cipher and PBE sections and is required
255 for some algorithms that split PBES2 into separate pieces (such as
259 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
260 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
261 BIO_set_cipher() and some obscure PEM functions were changed so they
262 can now return an error. The RAND changes required a change to the
263 RAND_METHOD structure.
266 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
267 a gcc attribute to warn if the result of a function is ignored. This
268 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
269 whose return value is often ignored.
272 Changes between 1.0.0e and 1.0.1 [xx XXX xxxx]
274 *) Add RC4-MD5 and AESNI-SHA1 "stiched" implementations.
276 This work was sponsored by Intel.
279 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
280 ENGINE is used then we cannot handle that in the FIPS module so we
281 keep original code iff non-FIPS operations are allowed.
284 *) Add -attime option to openssl verify.
285 [Peter Eckersley <pde@eff.org> and Ben Laurie]
287 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
290 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
291 FIPS EC methods unconditionally for now.
294 *) New build option no-ec2m to disable characteristic 2 code.
297 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
298 all cases can be covered as some introduce binary incompatibilities.
301 *) Redirect RSA operations to FIPS module including keygen,
302 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
305 *) Add similar low level API blocking to ciphers.
308 *) Low level digest APIs are not approved in FIPS mode: any attempt
309 to use these will cause a fatal error. Applications that *really* want
310 to use them can use the private_* version instead.
313 *) Redirect cipher operations to FIPS module for FIPS builds.
316 *) Redirect digest operations to FIPS module for FIPS builds.
319 *) Update build system to add "fips" flag which will link in fipscanister.o
320 for static and shared library builds embedding a signature if needed.
323 *) Output TLS supported curves in preference order instead of numerical
324 order. This is currently hardcoded for the highest order curves first.
325 This should be configurable so applications can judge speed vs strength.
328 *) Add TLS v1.2 server support for client authentication.
331 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
335 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
336 FIPS modules versions.
339 *) Add TLS v1.2 client side support for client authentication. Keep cache
340 of handshake records longer as we don't know the hash algorithm to use
341 until after the certificate request message is received.
344 *) Initial TLS v1.2 client support. Add a default signature algorithms
345 extension including all the algorithms we support. Parse new signature
346 format in client key exchange. Relax some ECC signing restrictions for
347 TLS v1.2 as indicated in RFC5246.
350 *) Add server support for TLS v1.2 signature algorithms extension. Switch
351 to new signature format when needed using client digest preference.
352 All server ciphersuites should now work correctly in TLS v1.2. No client
353 support yet and no support for client certificates.
356 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
357 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
358 ciphersuites. At present only RSA key exchange ciphersuites work with
359 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
360 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
361 and version checking.
364 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
365 with this defined it will not be affected by any changes to ssl internal
366 structures. Add several utility functions to allow openssl application
367 to work with OPENSSL_NO_SSL_INTERN defined.
371 [Tom Wu <tjw@cs.stanford.edu> and Ben Laurie]
373 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
376 *) Add EC_GFp_nistp224_method(), a 64-bit optimized implementation for
377 elliptic curve NIST-P224 with constant-time single point multiplication on
378 typical inputs. EC_GROUP_new_by_curve_name() will automatically use this
379 (while EC_GROUP_new_curve_GFp() currently won't and prefers the more
380 flexible implementations).
382 The implementation requires support for the nonstandard type __uint128_t,
383 and so is disabled by default. To include this in your build of OpenSSL,
384 use -DEC_NISTP224_64_GCC_128 on the Configure (or config) command line,
385 and run "make depend" (or "make update").
386 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
388 *) Permit abbreviated handshakes when renegotiating using the function
389 SSL_renegotiate_abbreviated().
390 [Robin Seggelmann <seggelmann@fh-muenster.de>]
392 *) Add call to ENGINE_register_all_complete() to
393 ENGINE_load_builtin_engines(), so some implementations get used
394 automatically instead of needing explicit application support.
397 *) Add support for TLS key exporter as described in RFC5705.
398 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
400 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
401 a few changes are required:
403 Add SSL_OP_NO_TLSv1_1 flag.
405 Update version checking logic to handle version 1.1.
406 Add explicit IV handling (ported from DTLS code).
407 Add command line options to s_client/s_server.
410 Changes between 1.0.0d and 1.0.0e [xx XXX xxxx]
412 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
413 signature public key algorithm by using OID xref utilities instead.
414 Before this you could only use some ECC ciphersuites with SHA1 only.
417 *) Add protection against ECDSA timing attacks as mentioned in the paper
418 by Billy Bob Brumley and Nicola Tuveri, see:
420 http://eprint.iacr.org/2011/232.pdf
422 [Billy Bob Brumley and Nicola Tuveri]
424 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
426 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
427 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
429 *) Fix bug in string printing code: if *any* escaping is enabled we must
430 escape the escape character (backslash) or the resulting string is
434 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
436 *) Disable code workaround for ancient and obsolete Netscape browsers
437 and servers: an attacker can use it in a ciphersuite downgrade attack.
438 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
441 *) Fixed J-PAKE implementation error, originally discovered by
442 Sebastien Martini, further info and confirmation from Stefan
443 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
446 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
448 *) Fix extension code to avoid race conditions which can result in a buffer
449 overrun vulnerability: resumed sessions must not be modified as they can
450 be shared by multiple threads. CVE-2010-3864
453 *) Fix WIN32 build system to correctly link an ENGINE directory into
457 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
459 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
461 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
463 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
465 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
466 context. The operation can be customised via the ctrl mechanism in
467 case ENGINEs want to include additional functionality.
470 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
473 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
474 output hashes compatible with older versions of OpenSSL.
475 [Willy Weisz <weisz@vcpc.univie.ac.at>]
477 *) Fix compression algorithm handling: if resuming a session use the
478 compression algorithm of the resumed session instead of determining
479 it from client hello again. Don't allow server to change algorithm.
482 *) Add load_crls() function to apps tidying load_certs() too. Add option
483 to verify utility to allow additional CRLs to be included.
486 *) Update OCSP request code to permit adding custom headers to the request:
487 some responders need this.
490 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
492 [Julia Lawall <julia@diku.dk>]
494 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
495 needlessly dereferenced structures, used obsolete functions and
496 didn't handle all updated verify codes correctly.
499 *) Disable MD2 in the default configuration.
502 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
503 indicate the initial BIO being pushed or popped. This makes it possible
504 to determine whether the BIO is the one explicitly called or as a result
505 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
506 it handles reference counts correctly and doesn't zero out the I/O bio
507 when it is not being explicitly popped. WARNING: applications which
508 included workarounds for the old buggy behaviour will need to be modified
509 or they could free up already freed BIOs.
512 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
513 renaming to all platforms (within the 0.9.8 branch, this was
514 done conditionally on Netware platforms to avoid a name clash).
515 [Guenter <lists@gknw.net>]
517 *) Add ECDHE and PSK support to DTLS.
518 [Michael Tuexen <tuexen@fh-muenster.de>]
520 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
524 *) Add "missing" function EVP_MD_flags() (without this the only way to
525 retrieve a digest flags is by accessing the structure directly. Update
526 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
527 or cipher is registered as in the "from" argument. Print out all
528 registered digests in the dgst usage message instead of manually
529 attempting to work them out.
532 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
533 this allows the use of compression and extensions. Change default cipher
534 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
535 by default unless an application cipher string requests it.
538 *) Alter match criteria in PKCS12_parse(). It used to try to use local
539 key ids to find matching certificates and keys but some PKCS#12 files
540 don't follow the (somewhat unwritten) rules and this strategy fails.
541 Now just gather all certificates together and the first private key
542 then look for the first certificate that matches the key.
545 *) Support use of registered digest and cipher names for dgst and cipher
546 commands instead of having to add each one as a special case. So now
553 openssl dgst -sha256 foo
555 and this works for ENGINE based algorithms too.
559 *) Update Gost ENGINE to support parameter files.
560 [Victor B. Wagner <vitus@cryptocom.ru>]
562 *) Support GeneralizedTime in ca utility.
563 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
565 *) Enhance the hash format used for certificate directory links. The new
566 form uses the canonical encoding (meaning equivalent names will work
567 even if they aren't identical) and uses SHA1 instead of MD5. This form
568 is incompatible with the older format and as a result c_rehash should
569 be used to rebuild symbolic links.
572 *) Make PKCS#8 the default write format for private keys, replacing the
573 traditional format. This form is standardised, more secure and doesn't
574 include an implicit MD5 dependency.
577 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
578 committed to OpenSSL should pass this lot as a minimum.
581 *) Add session ticket override functionality for use by EAP-FAST.
582 [Jouni Malinen <j@w1.fi>]
584 *) Modify HMAC functions to return a value. Since these can be implemented
585 in an ENGINE errors can occur.
588 *) Type-checked OBJ_bsearch_ex.
591 *) Type-checked OBJ_bsearch. Also some constification necessitated
592 by type-checking. Still to come: TXT_DB, bsearch(?),
593 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
597 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
598 seconds to a tm structure directly, instead of going through OS
599 specific date routines. This avoids any issues with OS routines such
600 as the year 2038 bug. New *_adj() functions for ASN1 time structures
601 and X509_time_adj_ex() to cover the extended range. The existing
602 X509_time_adj() is still usable and will no longer have any date issues.
605 *) Delta CRL support. New use deltas option which will attempt to locate
606 and search any appropriate delta CRLs available.
608 This work was sponsored by Google.
611 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
612 code and add additional score elements. Validate alternate CRL paths
613 as part of the CRL checking and indicate a new error "CRL path validation
614 error" in this case. Applications wanting additional details can use
615 the verify callback and check the new "parent" field. If this is not
616 NULL CRL path validation is taking place. Existing applications wont
617 see this because it requires extended CRL support which is off by
620 This work was sponsored by Google.
623 *) Support for freshest CRL extension.
625 This work was sponsored by Google.
628 *) Initial indirect CRL support. Currently only supported in the CRLs
629 passed directly and not via lookup. Process certificate issuer
630 CRL entry extension and lookup CRL entries by bother issuer name
631 and serial number. Check and process CRL issuer entry in IDP extension.
633 This work was sponsored by Google.
636 *) Add support for distinct certificate and CRL paths. The CRL issuer
637 certificate is validated separately in this case. Only enabled if
638 an extended CRL support flag is set: this flag will enable additional
639 CRL functionality in future.
641 This work was sponsored by Google.
644 *) Add support for policy mappings extension.
646 This work was sponsored by Google.
649 *) Fixes to pathlength constraint, self issued certificate handling,
650 policy processing to align with RFC3280 and PKITS tests.
652 This work was sponsored by Google.
655 *) Support for name constraints certificate extension. DN, email, DNS
656 and URI types are currently supported.
658 This work was sponsored by Google.
661 *) To cater for systems that provide a pointer-based thread ID rather
662 than numeric, deprecate the current numeric thread ID mechanism and
663 replace it with a structure and associated callback type. This
664 mechanism allows a numeric "hash" to be extracted from a thread ID in
665 either case, and on platforms where pointers are larger than 'long',
666 mixing is done to help ensure the numeric 'hash' is usable even if it
667 can't be guaranteed unique. The default mechanism is to use "&errno"
668 as a pointer-based thread ID to distinguish between threads.
670 Applications that want to provide their own thread IDs should now use
671 CRYPTO_THREADID_set_callback() to register a callback that will call
672 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
674 Note that ERR_remove_state() is now deprecated, because it is tied
675 to the assumption that thread IDs are numeric. ERR_remove_state(0)
676 to free the current thread's error state should be replaced by
677 ERR_remove_thread_state(NULL).
679 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
680 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
681 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
682 application was previously providing a numeric thread callback that
683 was inappropriate for distinguishing threads, then uniqueness might
684 have been obtained with &errno that happened immediately in the
685 intermediate development versions of OpenSSL; this is no longer the
686 case, the numeric thread callback will now override the automatic use
688 [Geoff Thorpe, with help from Bodo Moeller]
690 *) Initial support for different CRL issuing certificates. This covers a
691 simple case where the self issued certificates in the chain exist and
692 the real CRL issuer is higher in the existing chain.
694 This work was sponsored by Google.
697 *) Removed effectively defunct crypto/store from the build.
700 *) Revamp of STACK to provide stronger type-checking. Still to come:
701 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
702 ASN1_STRING, CONF_VALUE.
705 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
706 RAM on SSL connections. This option can save about 34k per idle SSL.
709 *) Revamp of LHASH to provide stronger type-checking. Still to come:
710 STACK, TXT_DB, bsearch, qsort.
713 *) Initial support for Cryptographic Message Syntax (aka CMS) based
714 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
715 support for data, signedData, compressedData, digestedData and
716 encryptedData, envelopedData types included. Scripts to check against
717 RFC4134 examples draft and interop and consistency checks of many
718 content types and variants.
721 *) Add options to enc utility to support use of zlib compression BIO.
724 *) Extend mk1mf to support importing of options and assembly language
725 files from Configure script, currently only included in VC-WIN32.
726 The assembly language rules can now optionally generate the source
727 files from the associated perl scripts.
730 *) Implement remaining functionality needed to support GOST ciphersuites.
731 Interop testing has been performed using CryptoPro implementations.
732 [Victor B. Wagner <vitus@cryptocom.ru>]
734 *) s390x assembler pack.
737 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
741 *) Implement Opaque PRF Input TLS extension as specified in
742 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
743 official specification yet and no extension type assignment by
744 IANA exists, this extension (for now) will have to be explicitly
745 enabled when building OpenSSL by providing the extension number
746 to use. For example, specify an option
748 -DTLSEXT_TYPE_opaque_prf_input=0x9527
750 to the "config" or "Configure" script to enable the extension,
751 assuming extension number 0x9527 (which is a completely arbitrary
752 and unofficial assignment based on the MD5 hash of the Internet
753 Draft). Note that by doing so, you potentially lose
754 interoperability with other TLS implementations since these might
755 be using the same extension number for other purposes.
757 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
758 opaque PRF input value to use in the handshake. This will create
759 an interal copy of the length-'len' string at 'src', and will
760 return non-zero for success.
762 To get more control and flexibility, provide a callback function
765 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
766 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
770 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
773 Callback function 'cb' will be called in handshakes, and is
774 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
775 Argument 'arg' is for application purposes (the value as given to
776 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
777 be provided to the callback function). The callback function
778 has to return non-zero to report success: usually 1 to use opaque
779 PRF input just if possible, or 2 to enforce use of the opaque PRF
780 input. In the latter case, the library will abort the handshake
781 if opaque PRF input is not successfully negotiated.
783 Arguments 'peerinput' and 'len' given to the callback function
784 will always be NULL and 0 in the case of a client. A server will
785 see the client's opaque PRF input through these variables if
786 available (NULL and 0 otherwise). Note that if the server
787 provides an opaque PRF input, the length must be the same as the
788 length of the client's opaque PRF input.
790 Note that the callback function will only be called when creating
791 a new session (session resumption can resume whatever was
792 previously negotiated), and will not be called in SSL 2.0
793 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
794 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
795 for applications that need to enforce opaque PRF input.
799 *) Update ssl code to support digests other than SHA1+MD5 for handshake
802 [Victor B. Wagner <vitus@cryptocom.ru>]
804 *) Add RFC4507 support to OpenSSL. This includes the corrections in
805 RFC4507bis. The encrypted ticket format is an encrypted encoded
806 SSL_SESSION structure, that way new session features are automatically
809 If a client application caches session in an SSL_SESSION structure
810 support is transparent because tickets are now stored in the encoded
813 The SSL_CTX structure automatically generates keys for ticket
814 protection in servers so again support should be possible
815 with no application modification.
817 If a client or server wishes to disable RFC4507 support then the option
818 SSL_OP_NO_TICKET can be set.
820 Add a TLS extension debugging callback to allow the contents of any client
821 or server extensions to be examined.
823 This work was sponsored by Google.
826 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
827 OpenSSL should now compile cleanly on gcc 4.2
828 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
830 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
831 support including streaming MAC support: this is required for GOST
833 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
835 *) Add option -stream to use PKCS#7 streaming in smime utility. New
836 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
837 to output in BER and PEM format.
840 *) Experimental support for use of HMAC via EVP_PKEY interface. This
841 allows HMAC to be handled via the EVP_DigestSign*() interface. The
842 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
843 ENGINE support for HMAC keys which are unextractable. New -mac and
844 -macopt options to dgst utility.
847 *) New option -sigopt to dgst utility. Update dgst to use
848 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
849 alternative signing paramaters such as X9.31 or PSS in the dgst
853 *) Change ssl_cipher_apply_rule(), the internal function that does
854 the work each time a ciphersuite string requests enabling
855 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
856 removing ("!foo+bar") a class of ciphersuites: Now it maintains
857 the order of disabled ciphersuites such that those ciphersuites
858 that most recently went from enabled to disabled not only stay
859 in order with respect to each other, but also have higher priority
860 than other disabled ciphersuites the next time ciphersuites are
863 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
864 the same ciphersuites as with "HIGH" alone, but in a specific
865 order where the PSK ciphersuites come first (since they are the
866 most recently disabled ciphersuites when "HIGH" is parsed).
868 Also, change ssl_create_cipher_list() (using this new
869 funcionality) such that between otherwise identical
870 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
874 *) Change ssl_create_cipher_list() so that it automatically
875 arranges the ciphersuites in reasonable order before starting
876 to process the rule string. Thus, the definition for "DEFAULT"
877 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
878 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
879 This makes it much easier to arrive at a reasonable default order
880 in applications for which anonymous ciphers are OK (meaning
881 that you can't actually use DEFAULT).
882 [Bodo Moeller; suggested by Victor Duchovni]
884 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
885 processing) into multiple integers instead of setting
886 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
887 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
888 (These masks as well as the individual bit definitions are hidden
889 away into the non-exported interface ssl/ssl_locl.h, so this
890 change to the definition of the SSL_CIPHER structure shouldn't
891 affect applications.) This give us more bits for each of these
892 categories, so there is no longer a need to coagulate AES128 and
893 AES256 into a single algorithm bit, and to coagulate Camellia128
894 and Camellia256 into a single algorithm bit, which has led to all
897 Thus, among other things, the kludge introduced in 0.9.7m and
898 0.9.8e for masking out AES256 independently of AES128 or masking
899 out Camellia256 independently of AES256 is not needed here in 0.9.9.
901 With the change, we also introduce new ciphersuite aliases that
902 so far were missing: "AES128", "AES256", "CAMELLIA128", and
906 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
907 Use the leftmost N bytes of the signature input if the input is
908 larger than the prime q (with N being the size in bytes of q).
911 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
912 it yet and it is largely untested.
915 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
918 *) Initial incomplete changes to avoid need for function casts in OpenSSL
919 some compilers (gcc 4.2 and later) reject their use. Safestack is
920 reimplemented. Update ASN1 to avoid use of legacy functions.
923 *) Win32/64 targets are linked with Winsock2.
926 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
927 to external functions. This can be used to increase CRL handling
928 efficiency especially when CRLs are very large by (for example) storing
929 the CRL revoked certificates in a database.
932 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
933 new CRLs added to a directory can be used. New command line option
934 -verify_return_error to s_client and s_server. This causes real errors
935 to be returned by the verify callback instead of carrying on no matter
936 what. This reflects the way a "real world" verify callback would behave.
939 *) GOST engine, supporting several GOST algorithms and public key formats.
940 Kindly donated by Cryptocom.
943 *) Partial support for Issuing Distribution Point CRL extension. CRLs
944 partitioned by DP are handled but no indirect CRL or reason partitioning
945 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
946 selected via a scoring technique which handles IDP and AKID in CRLs.
949 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
950 will ultimately be used for all verify operations: this will remove the
951 X509_STORE dependency on certificate verification and allow alternative
952 lookup methods. X509_STORE based implementations of these two callbacks.
955 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
956 Modify get_crl() to find a valid (unexpired) CRL if possible.
959 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
960 this would be called X509_CRL_cmp() but that name is already used by
961 a function that just compares CRL issuer names. Cache several CRL
962 extensions in X509_CRL structure and cache CRLDP in X509.
965 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
966 this maps equivalent X509_NAME structures into a consistent structure.
967 Name comparison can then be performed rapidly using memcmp().
970 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
974 *) Allow digests to supply their own micalg string for S/MIME type using
975 the ctrl EVP_MD_CTRL_MICALG.
978 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
979 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
980 ctrl. It can then customise the structure before and/or after signing
984 *) New function OBJ_add_sigid() to allow application defined signature OIDs
985 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
986 to free up any added signature OIDs.
989 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
990 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
991 digest and cipher tables. New options added to openssl utility:
992 list-message-digest-algorithms and list-cipher-algorithms.
995 *) Change the array representation of binary polynomials: the list
996 of degrees of non-zero coefficients is now terminated with -1.
997 Previously it was terminated with 0, which was also part of the
998 value; thus, the array representation was not applicable to
999 polynomials where t^0 has coefficient zero. This change makes
1000 the array representation useful in a more general context.
1003 *) Various modifications and fixes to SSL/TLS cipher string
1004 handling. For ECC, the code now distinguishes between fixed ECDH
1005 with RSA certificates on the one hand and with ECDSA certificates
1006 on the other hand, since these are separate ciphersuites. The
1007 unused code for Fortezza ciphersuites has been removed.
1009 For consistency with EDH, ephemeral ECDH is now called "EECDH"
1010 (not "ECDHE"). For consistency with the code for DH
1011 certificates, use of ECDH certificates is now considered ECDH
1012 authentication, not RSA or ECDSA authentication (the latter is
1013 merely the CA's signing algorithm and not actively used in the
1016 The temporary ciphersuite alias "ECCdraft" is no longer
1017 available, and ECC ciphersuites are no longer excluded from "ALL"
1018 and "DEFAULT". The following aliases now exist for RFC 4492
1019 ciphersuites, most of these by analogy with the DH case:
1021 kECDHr - ECDH cert, signed with RSA
1022 kECDHe - ECDH cert, signed with ECDSA
1023 kECDH - ECDH cert (signed with either RSA or ECDSA)
1024 kEECDH - ephemeral ECDH
1025 ECDH - ECDH cert or ephemeral ECDH
1031 AECDH - anonymous ECDH
1032 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
1036 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
1037 Use correct micalg parameters depending on digest(s) in signed message.
1040 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
1041 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
1044 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
1045 an engine to register a method. Add ENGINE lookups for methods and
1046 functional reference processing.
1049 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
1050 EVP_{Sign,Verify}* which allow an application to customise the signature
1054 *) New -resign option to smime utility. This adds one or more signers
1055 to an existing PKCS#7 signedData structure. Also -md option to use an
1056 alternative message digest algorithm for signing.
1059 *) Tidy up PKCS#7 routines and add new functions to make it easier to
1060 create PKCS7 structures containing multiple signers. Update smime
1061 application to support multiple signers.
1064 *) New -macalg option to pkcs12 utility to allow setting of an alternative
1068 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
1069 Reorganize PBE internals to lookup from a static table using NIDs,
1070 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
1071 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
1072 PRF which will be automatically used with PBES2.
1075 *) Replace the algorithm specific calls to generate keys in "req" with the
1079 *) Update PKCS#7 enveloped data routines to use new API. This is now
1080 supported by any public key method supporting the encrypt operation. A
1081 ctrl is added to allow the public key algorithm to examine or modify
1082 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
1086 *) Add a ctrl to asn1 method to allow a public key algorithm to express
1087 a default digest type to use. In most cases this will be SHA1 but some
1088 algorithms (such as GOST) need to specify an alternative digest. The
1089 return value indicates how strong the prefernce is 1 means optional and
1090 2 is mandatory (that is it is the only supported type). Modify
1091 ASN1_item_sign() to accept a NULL digest argument to indicate it should
1092 use the default md. Update openssl utilities to use the default digest
1093 type for signing if it is not explicitly indicated.
1096 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
1097 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
1098 signing method from the key type. This effectively removes the link
1099 between digests and public key types.
1102 *) Add an OID cross reference table and utility functions. Its purpose is to
1103 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
1104 rsaEncryption. This will allow some of the algorithm specific hackery
1105 needed to use the correct OID to be removed.
1108 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
1109 structures for PKCS7_sign(). They are now set up by the relevant public
1113 *) Add provisional EC pkey method with support for ECDSA and ECDH.
1116 *) Add support for key derivation (agreement) in the API, DH method and
1120 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
1121 public and private key formats. As a side effect these add additional
1122 command line functionality not previously available: DSA signatures can be
1123 generated and verified using pkeyutl and DH key support and generation in
1128 [Oliver Tappe <zooey@hirschkaefer.de>]
1130 *) New make target "install_html_docs" installs HTML renditions of the
1132 [Oliver Tappe <zooey@hirschkaefer.de>]
1134 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
1135 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
1136 support key and parameter generation and add initial key generation
1137 functionality for RSA.
1140 *) Add functions for main EVP_PKEY_method operations. The undocumented
1141 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
1142 EVP_PKEY_{encrypt,decrypt}_old.
1145 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
1146 key API, doesn't do much yet.
1149 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
1150 public key algorithms. New option to openssl utility:
1151 "list-public-key-algorithms" to print out info.
1154 *) Implement the Supported Elliptic Curves Extension for
1155 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1158 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
1159 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
1162 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
1163 utilities such as rsa, dsa, dsaparam etc except they process any key
1167 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
1168 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
1169 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
1173 *) Initial support for pluggable public key ASN1.
1174 De-spaghettify the public key ASN1 handling. Move public and private
1175 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
1176 algorithm specific handling to a single module within the relevant
1177 algorithm directory. Add functions to allow (near) opaque processing
1178 of public and private key structures.
1181 *) Implement the Supported Point Formats Extension for
1182 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1185 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
1186 for the psk identity [hint] and the psk callback functions to the
1187 SSL_SESSION, SSL and SSL_CTX structure.
1190 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
1194 SSL_CTX_use_psk_identity_hint
1195 SSL_get_psk_identity_hint
1196 SSL_get_psk_identity
1197 SSL_use_psk_identity_hint
1199 [Mika Kousa and Pasi Eronen of Nokia Corporation]
1201 *) Add RFC 3161 compliant time stamp request creation, response generation
1202 and response verification functionality.
1203 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
1205 *) Add initial support for TLS extensions, specifically for the server_name
1206 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1207 have new members for a host name. The SSL data structure has an
1208 additional member SSL_CTX *initial_ctx so that new sessions can be
1209 stored in that context to allow for session resumption, even after the
1210 SSL has been switched to a new SSL_CTX in reaction to a client's
1211 server_name extension.
1213 New functions (subject to change):
1215 SSL_get_servername()
1216 SSL_get_servername_type()
1219 New CTRL codes and macros (subject to change):
1221 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1222 - SSL_CTX_set_tlsext_servername_callback()
1223 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1224 - SSL_CTX_set_tlsext_servername_arg()
1225 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1227 openssl s_client has a new '-servername ...' option.
1229 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1230 '-key2 ...', '-servername_fatal' (subject to change). This allows
1231 testing the HostName extension for a specific single host name ('-cert'
1232 and '-key' remain fallbacks for handshakes without HostName
1233 negotiation). If the unrecogninzed_name alert has to be sent, this by
1234 default is a warning; it becomes fatal with the '-servername_fatal'
1237 [Peter Sylvester, Remy Allais, Christophe Renou]
1239 *) Whirlpool hash implementation is added.
1242 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
1243 bn(64,32). Because of instruction set limitations it doesn't have
1244 any negative impact on performance. This was done mostly in order
1245 to make it possible to share assembler modules, such as bn_mul_mont
1246 implementations, between 32- and 64-bit builds without hassle.
1249 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
1250 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
1254 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
1255 dedicated Montgomery multiplication procedure, is introduced.
1256 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
1257 "64-bit" performance on certain 32-bit targets.
1260 *) New option SSL_OP_NO_COMP to disable use of compression selectively
1261 in SSL structures. New SSL ctrl to set maximum send fragment size.
1262 Save memory by seeting the I/O buffer sizes dynamically instead of
1263 using the maximum available value.
1266 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
1267 in addition to the text details.
1270 *) Very, very preliminary EXPERIMENTAL support for printing of general
1271 ASN1 structures. This currently produces rather ugly output and doesn't
1272 handle several customised structures at all.
1275 *) Integrated support for PVK file format and some related formats such
1276 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
1277 these in the 'rsa' and 'dsa' utilities.
1280 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
1283 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
1284 place for the (very old) "NETSCAPE" format certificates which are now
1285 handled using new ASN1 code equivalents.
1288 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
1289 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
1290 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
1293 *) Modify CRL distribution points extension code to print out previously
1294 unsupported fields. Enhance extension setting code to allow setting of
1298 *) Add print and set support for Issuing Distribution Point CRL extension.
1301 *) Change 'Configure' script to enable Camellia by default.
1304 Changes between 0.9.8r and 0.9.8s [xx XXX xxxx]
1306 *) Add protection against ECDSA timing attacks as mentioned in the paper
1307 by Billy Bob Brumley and Nicola Tuveri, see:
1309 http://eprint.iacr.org/2011/232.pdf
1311 [Billy Bob Brumley and Nicola Tuveri]
1313 Changes between 0.9.8q and 0.9.8r [8 Feb 2011]
1315 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
1316 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
1318 *) Fix bug in string printing code: if *any* escaping is enabled we must
1319 escape the escape character (backslash) or the resulting string is
1323 Changes between 0.9.8p and 0.9.8q [2 Dec 2010]
1325 *) Disable code workaround for ancient and obsolete Netscape browsers
1326 and servers: an attacker can use it in a ciphersuite downgrade attack.
1327 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
1330 *) Fixed J-PAKE implementation error, originally discovered by
1331 Sebastien Martini, further info and confirmation from Stefan
1332 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
1335 Changes between 0.9.8o and 0.9.8p [16 Nov 2010]
1337 *) Fix extension code to avoid race conditions which can result in a buffer
1338 overrun vulnerability: resumed sessions must not be modified as they can
1339 be shared by multiple threads. CVE-2010-3864
1342 *) Fix for double free bug in ssl/s3_clnt.c CVE-2010-2939
1345 *) Don't reencode certificate when calculating signature: cache and use
1346 the original encoding instead. This makes signature verification of
1347 some broken encodings work correctly.
1350 *) ec2_GF2m_simple_mul bugfix: compute correct result if the output EC_POINT
1351 is also one of the inputs.
1352 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
1354 *) Don't repeatedly append PBE algorithms to table if they already exist.
1355 Sort table on each new add. This effectively makes the table read only
1356 after all algorithms are added and subsequent calls to PKCS12_pbe_add
1360 Changes between 0.9.8n and 0.9.8o [01 Jun 2010]
1362 [NB: OpenSSL 0.9.8o and later 0.9.8 patch levels were released after
1365 *) Correct a typo in the CMS ASN1 module which can result in invalid memory
1366 access or freeing data twice (CVE-2010-0742)
1367 [Steve Henson, Ronald Moesbergen <intercommit@gmail.com>]
1369 *) Add SHA2 algorithms to SSL_library_init(). SHA2 is becoming far more
1370 common in certificates and some applications which only call
1371 SSL_library_init and not OpenSSL_add_all_algorithms() will fail.
1375 Reduce copying into .apps and .test in makevms.com
1376 Don't try to use blank CA certificate in CA.com
1377 Allow use of C files from original directories in maketests.com
1378 [Steven M. Schweda" <sms@antinode.info>]
1380 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
1382 *) When rejecting SSL/TLS records due to an incorrect version number, never
1383 update s->server with a new major version number. As of
1384 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
1385 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
1386 the previous behavior could result in a read attempt at NULL when
1387 receiving specific incorrect SSL/TLS records once record payload
1388 protection is active. (CVE-2010-0740)
1389 [Bodo Moeller, Adam Langley <agl@chromium.org>]
1391 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
1392 could be crashed if the relevant tables were not present (e.g. chrooted).
1393 [Tomas Hoger <thoger@redhat.com>]
1395 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
1397 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
1398 [Martin Olsson, Neel Mehta]
1400 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
1401 accommodate for stack sorting, always a write lock!).
1404 *) On some versions of WIN32 Heap32Next is very slow. This can cause
1405 excessive delays in the RAND_poll(): over a minute. As a workaround
1406 include a time check in the inner Heap32Next loop too.
1409 *) The code that handled flushing of data in SSL/TLS originally used the
1410 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
1411 the problem outlined in PR#1949. The fix suggested there however can
1412 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
1413 of Apache). So instead simplify the code to flush unconditionally.
1414 This should be fine since flushing with no data to flush is a no op.
1417 *) Handle TLS versions 2.0 and later properly and correctly use the
1418 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
1419 off ancient servers have a habit of sticking around for a while...
1422 *) Modify compression code so it frees up structures without using the
1423 ex_data callbacks. This works around a problem where some applications
1424 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
1425 restarting) then use compression (e.g. SSL with compression) later.
1426 This results in significant per-connection memory leaks and
1427 has caused some security issues including CVE-2008-1678 and
1431 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
1432 change when encrypting or decrypting.
1435 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
1436 connect and renegotiate with servers which do not support RI.
1437 Until RI is more widely deployed this option is enabled by default.
1440 *) Add "missing" ssl ctrls to clear options and mode.
1443 *) If client attempts to renegotiate and doesn't support RI respond with
1444 a no_renegotiation alert as required by RFC5746. Some renegotiating
1445 TLS clients will continue a connection gracefully when they receive
1446 the alert. Unfortunately OpenSSL mishandled this alert and would hang
1447 waiting for a server hello which it will never receive. Now we treat a
1448 received no_renegotiation alert as a fatal error. This is because
1449 applications requesting a renegotiation might well expect it to succeed
1450 and would have no code in place to handle the server denying it so the
1451 only safe thing to do is to terminate the connection.
1454 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
1455 peer supports secure renegotiation and 0 otherwise. Print out peer
1456 renegotiation support in s_client/s_server.
1459 *) Replace the highly broken and deprecated SPKAC certification method with
1460 the updated NID creation version. This should correctly handle UTF8.
1463 *) Implement RFC5746. Re-enable renegotiation but require the extension
1464 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
1465 turns out to be a bad idea. It has been replaced by
1466 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
1467 SSL_CTX_set_options(). This is really not recommended unless you
1468 know what you are doing.
1469 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
1471 *) Fixes to stateless session resumption handling. Use initial_ctx when
1472 issuing and attempting to decrypt tickets in case it has changed during
1473 servername handling. Use a non-zero length session ID when attempting
1474 stateless session resumption: this makes it possible to determine if
1475 a resumption has occurred immediately after receiving server hello
1476 (several places in OpenSSL subtly assume this) instead of later in
1480 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
1481 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
1482 fixes for a few places where the return code is not checked
1484 [Julia Lawall <julia@diku.dk>]
1486 *) Add --strict-warnings option to Configure script to include devteam
1487 warnings in other configurations.
1490 *) Add support for --libdir option and LIBDIR variable in makefiles. This
1491 makes it possible to install openssl libraries in locations which
1492 have names other than "lib", for example "/usr/lib64" which some
1494 [Steve Henson, based on patch from Jeremy Utley]
1496 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
1497 X690 8.9.12 and can produce some misleading textual output of OIDs.
1498 [Steve Henson, reported by Dan Kaminsky]
1500 *) Delete MD2 from algorithm tables. This follows the recommendation in
1501 several standards that it is not used in new applications due to
1502 several cryptographic weaknesses. For binary compatibility reasons
1503 the MD2 API is still compiled in by default.
1506 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
1510 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
1511 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
1513 [Guenter <lists@gknw.net>]
1515 *) Fix the server certificate chain building code to use X509_verify_cert(),
1516 it used to have an ad-hoc builder which was unable to cope with anything
1517 other than a simple chain.
1518 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
1520 *) Don't check self signed certificate signatures in X509_verify_cert()
1521 by default (a flag can override this): it just wastes time without
1522 adding any security. As a useful side effect self signed root CAs
1523 with non-FIPS digests are now usable in FIPS mode.
1526 *) In dtls1_process_out_of_seq_message() the check if the current message
1527 is already buffered was missing. For every new message was memory
1528 allocated, allowing an attacker to perform an denial of service attack
1529 with sending out of seq handshake messages until there is no memory
1530 left. Additionally every future messege was buffered, even if the
1531 sequence number made no sense and would be part of another handshake.
1532 So only messages with sequence numbers less than 10 in advance will be
1533 buffered. (CVE-2009-1378)
1534 [Robin Seggelmann, discovered by Daniel Mentz]
1536 *) Records are buffered if they arrive with a future epoch to be
1537 processed after finishing the corresponding handshake. There is
1538 currently no limitation to this buffer allowing an attacker to perform
1539 a DOS attack with sending records with future epochs until there is no
1540 memory left. This patch adds the pqueue_size() function to detemine
1541 the size of a buffer and limits the record buffer to 100 entries.
1543 [Robin Seggelmann, discovered by Daniel Mentz]
1545 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
1546 parent structure is freed. (CVE-2009-1379)
1549 *) Handle non-blocking I/O properly in SSL_shutdown() call.
1550 [Darryl Miles <darryl-mailinglists@netbauds.net>]
1553 [Ilya O. <vrghost@gmail.com>]
1555 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
1557 *) Disable renegotiation completely - this fixes a severe security
1558 problem (CVE-2009-3555) at the cost of breaking all
1559 renegotiation. Renegotiation can be re-enabled by setting
1560 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
1561 run-time. This is really not recommended unless you know what
1565 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
1567 *) Don't set val to NULL when freeing up structures, it is freed up by
1568 underlying code. If sizeof(void *) > sizeof(long) this can result in
1569 zeroing past the valid field. (CVE-2009-0789)
1570 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
1572 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
1573 checked correctly. This would allow some invalid signed attributes to
1574 appear to verify correctly. (CVE-2009-0591)
1575 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1577 *) Reject UniversalString and BMPString types with invalid lengths. This
1578 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
1579 a legal length. (CVE-2009-0590)
1582 *) Set S/MIME signing as the default purpose rather than setting it
1583 unconditionally. This allows applications to override it at the store
1587 *) Permit restricted recursion of ASN1 strings. This is needed in practice
1588 to handle some structures.
1591 *) Improve efficiency of mem_gets: don't search whole buffer each time
1593 [Jeremy Shapiro <jnshapir@us.ibm.com>]
1595 *) New -hex option for openssl rand.
1598 *) Print out UTF8String and NumericString when parsing ASN1.
1601 *) Support NumericString type for name components.
1604 *) Allow CC in the environment to override the automatically chosen
1605 compiler. Note that nothing is done to ensure flags work with the
1609 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
1611 *) Properly check EVP_VerifyFinal() and similar return values
1613 [Ben Laurie, Bodo Moeller, Google Security Team]
1615 *) Enable TLS extensions by default.
1618 *) Allow the CHIL engine to be loaded, whether the application is
1619 multithreaded or not. (This does not release the developer from the
1620 obligation to set up the dynamic locking callbacks.)
1621 [Sander Temme <sander@temme.net>]
1623 *) Use correct exit code if there is an error in dgst command.
1624 [Steve Henson; problem pointed out by Roland Dirlewanger]
1626 *) Tweak Configure so that you need to say "experimental-jpake" to enable
1627 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
1630 *) Add experimental JPAKE support, including demo authentication in
1631 s_client and s_server.
1634 *) Set the comparison function in v3_addr_canonize().
1635 [Rob Austein <sra@hactrn.net>]
1637 *) Add support for XMPP STARTTLS in s_client.
1638 [Philip Paeps <philip@freebsd.org>]
1640 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
1641 to ensure that even with this option, only ciphersuites in the
1642 server's preference list will be accepted. (Note that the option
1643 applies only when resuming a session, so the earlier behavior was
1644 just about the algorithm choice for symmetric cryptography.)
1647 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
1649 *) Fix NULL pointer dereference if a DTLS server received
1650 ChangeCipherSpec as first record (CVE-2009-1386).
1653 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
1654 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
1657 *) The fix in 0.9.8c that supposedly got rid of unsafe
1658 double-checked locking was incomplete for RSA blinding,
1659 addressing just one layer of what turns out to have been
1660 doubly unsafe triple-checked locking.
1662 So now fix this for real by retiring the MONT_HELPER macro
1663 in crypto/rsa/rsa_eay.c.
1665 [Bodo Moeller; problem pointed out by Marius Schilder]
1667 *) Various precautionary measures:
1669 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
1671 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
1672 (NB: This would require knowledge of the secret session ticket key
1673 to exploit, in which case you'd be SOL either way.)
1675 - Change bn_nist.c so that it will properly handle input BIGNUMs
1676 outside the expected range.
1678 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
1681 [Neel Mehta, Bodo Moeller]
1683 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
1684 the load fails. Useful for distros.
1685 [Ben Laurie and the FreeBSD team]
1687 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
1690 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
1693 *) Expand ENGINE to support engine supplied SSL client certificate functions.
1695 This work was sponsored by Logica.
1698 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
1699 keystores. Support for SSL/TLS client authentication too.
1700 Not compiled unless enable-capieng specified to Configure.
1702 This work was sponsored by Logica.
1705 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
1706 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
1707 attribute creation routines such as certifcate requests and PKCS#12
1711 Changes between 0.9.8g and 0.9.8h [28 May 2008]
1713 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
1714 handshake which could lead to a cilent crash as found using the
1715 Codenomicon TLS test suite (CVE-2008-1672)
1716 [Steve Henson, Mark Cox]
1718 *) Fix double free in TLS server name extensions which could lead to
1719 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
1722 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
1724 Clear the error queue to ensure that error entries left from
1725 older function calls do not interfere with the correct operation.
1726 [Lutz Jaenicke, Erik de Castro Lopo]
1728 *) Remove root CA certificates of commercial CAs:
1730 The OpenSSL project does not recommend any specific CA and does not
1731 have any policy with respect to including or excluding any CA.
1732 Therefore it does not make any sense to ship an arbitrary selection
1733 of root CA certificates with the OpenSSL software.
1736 *) RSA OAEP patches to fix two separate invalid memory reads.
1737 The first one involves inputs when 'lzero' is greater than
1738 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
1739 before the beginning of from). The second one involves inputs where
1740 the 'db' section contains nothing but zeroes (there is a one-byte
1741 invalid read after the end of 'db').
1742 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1744 *) Partial backport from 0.9.9-dev:
1746 Introduce bn_mul_mont (dedicated Montgomery multiplication
1747 procedure) as a candidate for BIGNUM assembler implementation.
1748 While 0.9.9-dev uses assembler for various architectures, only
1749 x86_64 is available by default here in the 0.9.8 branch, and
1750 32-bit x86 is available through a compile-time setting.
1752 To try the 32-bit x86 assembler implementation, use Configure
1753 option "enable-montasm" (which exists only for this backport).
1755 As "enable-montasm" for 32-bit x86 disclaims code stability
1756 anyway, in this constellation we activate additional code
1757 backported from 0.9.9-dev for further performance improvements,
1758 namely BN_from_montgomery_word. (To enable this otherwise,
1759 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
1761 [Andy Polyakov (backport partially by Bodo Moeller)]
1763 *) Add TLS session ticket callback. This allows an application to set
1764 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
1765 values. This is useful for key rollover for example where several key
1766 sets may exist with different names.
1769 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
1770 This was broken until now in 0.9.8 releases, such that the only way
1771 a registered ENGINE could be used (assuming it initialises
1772 successfully on the host) was to explicitly set it as the default
1773 for the relevant algorithms. This is in contradiction with 0.9.7
1774 behaviour and the documentation. With this fix, when an ENGINE is
1775 registered into a given algorithm's table of implementations, the
1776 'uptodate' flag is reset so that auto-discovery will be used next
1777 time a new context for that algorithm attempts to select an
1779 [Ian Lister (tweaked by Geoff Thorpe)]
1781 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
1782 implemention in the following ways:
1784 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
1787 Lack of BER streaming support means one pass streaming processing is
1788 only supported if data is detached: setting the streaming flag is
1789 ignored for embedded content.
1791 CMS support is disabled by default and must be explicitly enabled
1792 with the enable-cms configuration option.
1795 *) Update the GMP engine glue to do direct copies between BIGNUM and
1796 mpz_t when openssl and GMP use the same limb size. Otherwise the
1797 existing "conversion via a text string export" trick is still used.
1798 [Paul Sheer <paulsheer@gmail.com>]
1800 *) Zlib compression BIO. This is a filter BIO which compressed and
1801 uncompresses any data passed through it.
1804 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
1805 RFC3394 compatible AES key wrapping.
1808 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
1809 sets string data without copying. X509_ALGOR_set0() and
1810 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
1811 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
1812 from an X509_ATTRIBUTE structure optionally checking it occurs only
1813 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
1817 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
1818 to get the expected BN_FLG_CONSTTIME behavior.
1819 [Bodo Moeller (Google)]
1823 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
1824 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
1825 - added some more tests to do_tests.pl
1826 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
1827 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
1828 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
1829 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
1830 - various changes to netware.pl to enable gcc-cross builds on Win32
1832 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
1833 - various changes to fix missing prototype warnings
1834 - fixed x86nasm.pl to create correct asm files for NASM COFF output
1835 - added AES, WHIRLPOOL and CPUID assembler code to build files
1836 - added missing AES assembler make rules to mk1mf.pl
1837 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
1838 [Guenter Knauf <eflash@gmx.net>]
1840 *) Implement certificate status request TLS extension defined in RFC3546.
1841 A client can set the appropriate parameters and receive the encoded
1842 OCSP response via a callback. A server can query the supplied parameters
1843 and set the encoded OCSP response in the callback. Add simplified examples
1844 to s_client and s_server.
1847 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
1849 *) Fix various bugs:
1850 + Binary incompatibility of ssl_ctx_st structure
1851 + DTLS interoperation with non-compliant servers
1852 + Don't call get_session_cb() without proposed session
1853 + Fix ia64 assembler code
1854 [Andy Polyakov, Steve Henson]
1856 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
1858 *) DTLS Handshake overhaul. There were longstanding issues with
1859 OpenSSL DTLS implementation, which were making it impossible for
1860 RFC 4347 compliant client to communicate with OpenSSL server.
1861 Unfortunately just fixing these incompatibilities would "cut off"
1862 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
1863 server keeps tolerating non RFC compliant syntax. The opposite is
1864 not true, 0.9.8f client can not communicate with earlier server.
1865 This update even addresses CVE-2007-4995.
1868 *) Changes to avoid need for function casts in OpenSSL: some compilers
1869 (gcc 4.2 and later) reject their use.
1870 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
1873 *) Add RFC4507 support to OpenSSL. This includes the corrections in
1874 RFC4507bis. The encrypted ticket format is an encrypted encoded
1875 SSL_SESSION structure, that way new session features are automatically
1878 If a client application caches session in an SSL_SESSION structure
1879 support is transparent because tickets are now stored in the encoded
1882 The SSL_CTX structure automatically generates keys for ticket
1883 protection in servers so again support should be possible
1884 with no application modification.
1886 If a client or server wishes to disable RFC4507 support then the option
1887 SSL_OP_NO_TICKET can be set.
1889 Add a TLS extension debugging callback to allow the contents of any client
1890 or server extensions to be examined.
1892 This work was sponsored by Google.
1895 *) Add initial support for TLS extensions, specifically for the server_name
1896 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1897 have new members for a host name. The SSL data structure has an
1898 additional member SSL_CTX *initial_ctx so that new sessions can be
1899 stored in that context to allow for session resumption, even after the
1900 SSL has been switched to a new SSL_CTX in reaction to a client's
1901 server_name extension.
1903 New functions (subject to change):
1905 SSL_get_servername()
1906 SSL_get_servername_type()
1909 New CTRL codes and macros (subject to change):
1911 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1912 - SSL_CTX_set_tlsext_servername_callback()
1913 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1914 - SSL_CTX_set_tlsext_servername_arg()
1915 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1917 openssl s_client has a new '-servername ...' option.
1919 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1920 '-key2 ...', '-servername_fatal' (subject to change). This allows
1921 testing the HostName extension for a specific single host name ('-cert'
1922 and '-key' remain fallbacks for handshakes without HostName
1923 negotiation). If the unrecogninzed_name alert has to be sent, this by
1924 default is a warning; it becomes fatal with the '-servername_fatal'
1927 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
1929 *) Add AES and SSE2 assembly language support to VC++ build.
1932 *) Mitigate attack on final subtraction in Montgomery reduction.
1935 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
1936 (which previously caused an internal error).
1939 *) Squeeze another 10% out of IGE mode when in != out.
1942 *) AES IGE mode speedup.
1943 [Dean Gaudet (Google)]
1945 *) Add the Korean symmetric 128-bit cipher SEED (see
1946 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
1947 add SEED ciphersuites from RFC 4162:
1949 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
1950 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
1951 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
1952 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
1954 To minimize changes between patchlevels in the OpenSSL 0.9.8
1955 series, SEED remains excluded from compilation unless OpenSSL
1956 is configured with 'enable-seed'.
1957 [KISA, Bodo Moeller]
1959 *) Mitigate branch prediction attacks, which can be practical if a
1960 single processor is shared, allowing a spy process to extract
1961 information. For detailed background information, see
1962 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
1963 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
1964 and Necessary Software Countermeasures"). The core of the change
1965 are new versions BN_div_no_branch() and
1966 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
1967 respectively, which are slower, but avoid the security-relevant
1968 conditional branches. These are automatically called by BN_div()
1969 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
1970 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
1971 remove a conditional branch.
1973 BN_FLG_CONSTTIME is the new name for the previous
1974 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
1975 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
1976 in the exponent causes BN_mod_exp_mont() to use the alternative
1977 implementation in BN_mod_exp_mont_consttime().) The old name
1978 remains as a deprecated alias.
1980 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
1981 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
1982 constant-time implementations for more than just exponentiation.
1983 Here too the old name is kept as a deprecated alias.
1985 BN_BLINDING_new() will now use BN_dup() for the modulus so that
1986 the BN_BLINDING structure gets an independent copy of the
1987 modulus. This means that the previous "BIGNUM *m" argument to
1988 BN_BLINDING_new() and to BN_BLINDING_create_param() now
1989 essentially becomes "const BIGNUM *m", although we can't actually
1990 change this in the header file before 0.9.9. It allows
1991 RSA_setup_blinding() to use BN_with_flags() on the modulus to
1992 enable BN_FLG_CONSTTIME.
1994 [Matthew D Wood (Intel Corp)]
1996 *) In the SSL/TLS server implementation, be strict about session ID
1997 context matching (which matters if an application uses a single
1998 external cache for different purposes). Previously,
1999 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
2000 set. This did ensure strict client verification, but meant that,
2001 with applications using a single external cache for quite
2002 different requirements, clients could circumvent ciphersuite
2003 restrictions for a given session ID context by starting a session
2004 in a different context.
2007 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2008 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2009 authentication-only ciphersuites.
2012 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
2013 not complete and could lead to a possible single byte overflow
2014 (CVE-2007-5135) [Ben Laurie]
2016 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
2018 *) Since AES128 and AES256 (and similarly Camellia128 and
2019 Camellia256) share a single mask bit in the logic of
2020 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2021 kludge to work properly if AES128 is available and AES256 isn't
2022 (or if Camellia128 is available and Camellia256 isn't).
2025 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
2026 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
2027 When a point or a seed is encoded in a BIT STRING, we need to
2028 prevent the removal of trailing zero bits to get the proper DER
2029 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
2030 of a NamedBitList, for which trailing 0 bits need to be removed.)
2033 *) Have SSL/TLS server implementation tolerate "mismatched" record
2034 protocol version while receiving ClientHello even if the
2035 ClientHello is fragmented. (The server can't insist on the
2036 particular protocol version it has chosen before the ServerHello
2037 message has informed the client about his choice.)
2040 *) Add RFC 3779 support.
2041 [Rob Austein for ARIN, Ben Laurie]
2043 *) Load error codes if they are not already present instead of using a
2044 static variable. This allows them to be cleanly unloaded and reloaded.
2045 Improve header file function name parsing.
2048 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
2049 or CAPABILITY handshake as required by RFCs.
2052 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
2054 *) Introduce limits to prevent malicious keys being able to
2055 cause a denial of service. (CVE-2006-2940)
2056 [Steve Henson, Bodo Moeller]
2058 *) Fix ASN.1 parsing of certain invalid structures that can result
2059 in a denial of service. (CVE-2006-2937) [Steve Henson]
2061 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2062 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2064 *) Fix SSL client code which could crash if connecting to a
2065 malicious SSLv2 server. (CVE-2006-4343)
2066 [Tavis Ormandy and Will Drewry, Google Security Team]
2068 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
2069 match only those. Before that, "AES256-SHA" would be interpreted
2070 as a pattern and match "AES128-SHA" too (since AES128-SHA got
2071 the same strength classification in 0.9.7h) as we currently only
2072 have a single AES bit in the ciphersuite description bitmap.
2073 That change, however, also applied to ciphersuite strings such as
2074 "RC4-MD5" that intentionally matched multiple ciphersuites --
2075 namely, SSL 2.0 ciphersuites in addition to the more common ones
2076 from SSL 3.0/TLS 1.0.
2078 So we change the selection algorithm again: Naming an explicit
2079 ciphersuite selects this one ciphersuite, and any other similar
2080 ciphersuite (same bitmap) from *other* protocol versions.
2081 Thus, "RC4-MD5" again will properly select both the SSL 2.0
2082 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
2084 Since SSL 2.0 does not have any ciphersuites for which the
2085 128/256 bit distinction would be relevant, this works for now.
2086 The proper fix will be to use different bits for AES128 and
2087 AES256, which would have avoided the problems from the beginning;
2088 however, bits are scarce, so we can only do this in a new release
2089 (not just a patchlevel) when we can change the SSL_CIPHER
2090 definition to split the single 'unsigned long mask' bitmap into
2091 multiple values to extend the available space.
2095 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
2097 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2098 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2100 *) Add AES IGE and biIGE modes.
2103 *) Change the Unix randomness entropy gathering to use poll() when
2104 possible instead of select(), since the latter has some
2105 undesirable limitations.
2106 [Darryl Miles via Richard Levitte and Bodo Moeller]
2108 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
2109 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
2110 cannot be implicitly activated as part of, e.g., the "AES" alias.
2111 However, please upgrade to OpenSSL 0.9.9[-dev] for
2112 non-experimental use of the ECC ciphersuites to get TLS extension
2113 support, which is required for curve and point format negotiation
2114 to avoid potential handshake problems.
2117 *) Disable rogue ciphersuites:
2119 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2120 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2121 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2123 The latter two were purportedly from
2124 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2127 Also deactivate the remaining ciphersuites from
2128 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2129 unofficial, and the ID has long expired.
2132 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2133 dual-core machines) and other potential thread-safety issues.
2136 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
2137 versions), which is now available for royalty-free use
2138 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
2139 Also, add Camellia TLS ciphersuites from RFC 4132.
2141 To minimize changes between patchlevels in the OpenSSL 0.9.8
2142 series, Camellia remains excluded from compilation unless OpenSSL
2143 is configured with 'enable-camellia'.
2146 *) Disable the padding bug check when compression is in use. The padding
2147 bug check assumes the first packet is of even length, this is not
2148 necessarily true if compresssion is enabled and can result in false
2149 positives causing handshake failure. The actual bug test is ancient
2150 code so it is hoped that implementations will either have fixed it by
2151 now or any which still have the bug do not support compression.
2154 Changes between 0.9.8a and 0.9.8b [04 May 2006]
2156 *) When applying a cipher rule check to see if string match is an explicit
2157 cipher suite and only match that one cipher suite if it is.
2160 *) Link in manifests for VC++ if needed.
2161 [Austin Ziegler <halostatue@gmail.com>]
2163 *) Update support for ECC-based TLS ciphersuites according to
2164 draft-ietf-tls-ecc-12.txt with proposed changes (but without
2165 TLS extensions, which are supported starting with the 0.9.9
2166 branch, not in the OpenSSL 0.9.8 branch).
2169 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
2170 opaque EVP_CIPHER_CTX handling.
2173 *) Fixes and enhancements to zlib compression code. We now only use
2174 "zlib1.dll" and use the default __cdecl calling convention on Win32
2175 to conform with the standards mentioned here:
2176 http://www.zlib.net/DLL_FAQ.txt
2177 Static zlib linking now works on Windows and the new --with-zlib-include
2178 --with-zlib-lib options to Configure can be used to supply the location
2179 of the headers and library. Gracefully handle case where zlib library
2183 *) Several fixes and enhancements to the OID generation code. The old code
2184 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
2185 handle numbers larger than ULONG_MAX, truncated printing and had a
2186 non standard OBJ_obj2txt() behaviour.
2189 *) Add support for building of engines under engine/ as shared libraries
2190 under VC++ build system.
2193 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
2194 Hopefully, we will not see any false combination of paths any more.
2197 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
2199 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2200 (part of SSL_OP_ALL). This option used to disable the
2201 countermeasure against man-in-the-middle protocol-version
2202 rollback in the SSL 2.0 server implementation, which is a bad
2203 idea. (CVE-2005-2969)
2205 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2206 for Information Security, National Institute of Advanced Industrial
2207 Science and Technology [AIST], Japan)]
2209 *) Add two function to clear and return the verify parameter flags.
2212 *) Keep cipherlists sorted in the source instead of sorting them at
2213 runtime, thus removing the need for a lock.
2216 *) Avoid some small subgroup attacks in Diffie-Hellman.
2217 [Nick Mathewson and Ben Laurie]
2219 *) Add functions for well-known primes.
2222 *) Extended Windows CE support.
2223 [Satoshi Nakamura and Andy Polyakov]
2225 *) Initialize SSL_METHOD structures at compile time instead of during
2226 runtime, thus removing the need for a lock.
2229 *) Make PKCS7_decrypt() work even if no certificate is supplied by
2230 attempting to decrypt each encrypted key in turn. Add support to
2234 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
2236 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
2239 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
2242 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
2243 key into the same file any more.
2246 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
2249 *) Add -utf8 command line and config file option to 'ca'.
2250 [Stefan <stf@udoma.org]
2252 *) Removed the macro des_crypt(), as it seems to conflict with some
2253 libraries. Use DES_crypt().
2256 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
2257 involves renaming the source and generated shared-libs for
2258 both. The engines will accept the corrected or legacy ids
2259 ('ncipher' and '4758_cca' respectively) when binding. NB,
2260 this only applies when building 'shared'.
2261 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
2263 *) Add attribute functions to EVP_PKEY structure. Modify
2264 PKCS12_create() to recognize a CSP name attribute and
2265 use it. Make -CSP option work again in pkcs12 utility.
2268 *) Add new functionality to the bn blinding code:
2269 - automatic re-creation of the BN_BLINDING parameters after
2270 a fixed number of uses (currently 32)
2271 - add new function for parameter creation
2272 - introduce flags to control the update behaviour of the
2273 BN_BLINDING parameters
2274 - hide BN_BLINDING structure
2275 Add a second BN_BLINDING slot to the RSA structure to improve
2276 performance when a single RSA object is shared among several
2280 *) Add support for DTLS.
2281 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
2283 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
2284 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
2287 *) Remove buggy and incompletet DH cert support from
2288 ssl/ssl_rsa.c and ssl/s3_both.c
2291 *) Use SHA-1 instead of MD5 as the default digest algorithm for
2292 the apps/openssl applications.
2295 *) Compile clean with "-Wall -Wmissing-prototypes
2296 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
2297 DEBUG_SAFESTACK must also be set.
2300 *) Change ./Configure so that certain algorithms can be disabled by default.
2301 The new counterpiece to "no-xxx" is "enable-xxx".
2303 The patented RC5 and MDC2 algorithms will now be disabled unless
2304 "enable-rc5" and "enable-mdc2", respectively, are specified.
2306 (IDEA remains enabled despite being patented. This is because IDEA
2307 is frequently required for interoperability, and there is no license
2308 fee for non-commercial use. As before, "no-idea" can be used to
2309 avoid this algorithm.)
2313 *) Add processing of proxy certificates (see RFC 3820). This work was
2314 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
2315 EGEE (Enabling Grids for E-science in Europe).
2318 *) RC4 performance overhaul on modern architectures/implementations, such
2319 as Intel P4, IA-64 and AMD64.
2322 *) New utility extract-section.pl. This can be used specify an alternative
2323 section number in a pod file instead of having to treat each file as
2324 a separate case in Makefile. This can be done by adding two lines to the
2327 =for comment openssl_section:XXX
2329 The blank line is mandatory.
2333 *) New arguments -certform, -keyform and -pass for s_client and s_server
2334 to allow alternative format key and certificate files and passphrase
2338 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
2339 update associated structures and add various utility functions.
2341 Add new policy related verify parameters, include policy checking in
2342 standard verify code. Enhance 'smime' application with extra parameters
2343 to support policy checking and print out.
2346 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
2347 Nehemiah processors. These extensions support AES encryption in hardware
2348 as well as RNG (though RNG support is currently disabled).
2349 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
2351 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
2354 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
2355 [Andy Polyakov and a number of other people]
2357 *) Improved PowerPC platform support. Most notably BIGNUM assembler
2358 implementation contributed by IBM.
2359 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
2361 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
2362 exponent rather than 'unsigned long'. There is a corresponding change to
2363 the new 'rsa_keygen' element of the RSA_METHOD structure.
2364 [Jelte Jansen, Geoff Thorpe]
2366 *) Functionality for creating the initial serial number file is now
2367 moved from CA.pl to the 'ca' utility with a new option -create_serial.
2369 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
2370 number file to 1, which is bound to cause problems. To avoid
2371 the problems while respecting compatibility between different 0.9.7
2372 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
2373 CA.pl for serial number initialization. With the new release 0.9.8,
2374 we can fix the problem directly in the 'ca' utility.)
2377 *) Reduced header interdepencies by declaring more opaque objects in
2378 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
2379 give fewer recursive includes, which could break lazy source code - so
2380 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
2381 developers should define this symbol when building and using openssl to
2382 ensure they track the recommended behaviour, interfaces, [etc], but
2383 backwards-compatible behaviour prevails when this isn't defined.
2386 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
2389 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
2390 This will generate a random key of the appropriate length based on the
2391 cipher context. The EVP_CIPHER can provide its own random key generation
2392 routine to support keys of a specific form. This is used in the des and
2393 3des routines to generate a key of the correct parity. Update S/MIME
2394 code to use new functions and hence generate correct parity DES keys.
2395 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
2396 valid (weak or incorrect parity).
2399 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
2400 as looking them up. This is useful when the verified structure may contain
2401 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
2402 present unless the new PKCS7_NO_CRL flag is asserted.
2405 *) Extend ASN1 oid configuration module. It now additionally accepts the
2408 shortName = some long name, 1.2.3.4
2411 *) Reimplemented the BN_CTX implementation. There is now no more static
2412 limitation on the number of variables it can handle nor the depth of the
2413 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
2414 information can now expand as required, and rather than having a single
2415 static array of bignums, BN_CTX now uses a linked-list of such arrays
2416 allowing it to expand on demand whilst maintaining the usefulness of
2417 BN_CTX's "bundling".
2420 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
2421 to allow all RSA operations to function using a single BN_CTX.
2424 *) Preliminary support for certificate policy evaluation and checking. This
2425 is initially intended to pass the tests outlined in "Conformance Testing
2426 of Relying Party Client Certificate Path Processing Logic" v1.07.
2429 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
2430 remained unused and not that useful. A variety of other little bignum
2431 tweaks and fixes have also been made continuing on from the audit (see
2435 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
2436 associated ASN1, EVP and SSL functions and old ASN1 macros.
2439 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
2440 and this should never fail. So the return value from the use of
2441 BN_set_word() (which can fail due to needless expansion) is now deprecated;
2442 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
2445 *) BN_CTX_get() should return zero-valued bignums, providing the same
2446 initialised value as BN_new().
2447 [Geoff Thorpe, suggested by Ulf Möller]
2449 *) Support for inhibitAnyPolicy certificate extension.
2452 *) An audit of the BIGNUM code is underway, for which debugging code is
2453 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
2454 is considered valid when processing BIGNUMs, and causes execution to
2455 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
2456 further steps are taken to deliberately pollute unused data in BIGNUM
2457 structures to try and expose faulty code further on. For now, openssl will
2458 (in its default mode of operation) continue to tolerate the inconsistent
2459 forms that it has tolerated in the past, but authors and packagers should
2460 consider trying openssl and their own applications when compiled with
2461 these debugging symbols defined. It will help highlight potential bugs in
2462 their own code, and will improve the test coverage for OpenSSL itself. At
2463 some point, these tighter rules will become openssl's default to improve
2464 maintainability, though the assert()s and other overheads will remain only
2465 in debugging configurations. See bn.h for more details.
2466 [Geoff Thorpe, Nils Larsch, Ulf Möller]
2468 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
2469 that can only be obtained through BN_CTX_new() (which implicitly
2470 initialises it). The presence of this function only made it possible
2471 to overwrite an existing structure (and cause memory leaks).
2474 *) Because of the callback-based approach for implementing LHASH as a
2475 template type, lh_insert() adds opaque objects to hash-tables and
2476 lh_doall() or lh_doall_arg() are typically used with a destructor callback
2477 to clean up those corresponding objects before destroying the hash table
2478 (and losing the object pointers). So some over-zealous constifications in
2479 LHASH have been relaxed so that lh_insert() does not take (nor store) the
2480 objects as "const" and the lh_doall[_arg] callback wrappers are not
2481 prototyped to have "const" restrictions on the object pointers they are
2482 given (and so aren't required to cast them away any more).
2485 *) The tmdiff.h API was so ugly and minimal that our own timing utility
2486 (speed) prefers to use its own implementation. The two implementations
2487 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
2488 its object type properly exposed (MS_TM) instead of casting to/from "char
2489 *". This may still change yet if someone realises MS_TM and "ms_time_***"
2490 aren't necessarily the greatest nomenclatures - but this is what was used
2491 internally to the implementation so I've used that for now.
2494 *) Ensure that deprecated functions do not get compiled when
2495 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
2496 the self-tests were still using deprecated key-generation functions so
2497 these have been updated also.
2500 *) Reorganise PKCS#7 code to separate the digest location functionality
2501 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
2502 New function PKCS7_set_digest() to set the digest type for PKCS#7
2503 digestedData type. Add additional code to correctly generate the
2504 digestedData type and add support for this type in PKCS7 initialization
2508 *) New function PKCS7_set0_type_other() this initializes a PKCS7
2509 structure of type "other".
2512 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
2513 sure the loop does correctly stop and breaking ("division by zero")
2514 modulus operations are not performed. The (pre-generated) prime
2515 table crypto/bn/bn_prime.h was already correct, but it could not be
2516 re-generated on some platforms because of the "division by zero"
2517 situation in the script.
2518 [Ralf S. Engelschall]
2520 *) Update support for ECC-based TLS ciphersuites according to
2521 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
2522 SHA-1 now is only used for "small" curves (where the
2523 representation of a field element takes up to 24 bytes); for
2524 larger curves, the field element resulting from ECDH is directly
2525 used as premaster secret.
2526 [Douglas Stebila (Sun Microsystems Laboratories)]
2528 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
2529 curve secp160r1 to the tests.
2530 [Douglas Stebila (Sun Microsystems Laboratories)]
2532 *) Add the possibility to load symbols globally with DSO.
2533 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
2535 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
2536 control of the error stack.
2539 *) Add support for STORE in ENGINE.
2542 *) Add the STORE type. The intention is to provide a common interface
2543 to certificate and key stores, be they simple file-based stores, or
2544 HSM-type store, or LDAP stores, or...
2545 NOTE: The code is currently UNTESTED and isn't really used anywhere.
2548 *) Add a generic structure called OPENSSL_ITEM. This can be used to
2549 pass a list of arguments to any function as well as provide a way
2550 for a function to pass data back to the caller.
2553 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
2554 works like BUF_strdup() but can be used to duplicate a portion of
2555 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
2559 *) Add the function sk_find_ex() which works like sk_find(), but will
2560 return an index to an element even if an exact match couldn't be
2561 found. The index is guaranteed to point at the element where the
2562 searched-for key would be inserted to preserve sorting order.
2565 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
2566 takes an extra flags argument for optional functionality. Currently,
2567 the following flags are defined:
2569 OBJ_BSEARCH_VALUE_ON_NOMATCH
2570 This one gets OBJ_bsearch_ex() to return a pointer to the first
2571 element where the comparing function returns a negative or zero
2574 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
2575 This one gets OBJ_bsearch_ex() to return a pointer to the first
2576 element where the comparing function returns zero. This is useful
2577 if there are more than one element where the comparing function
2581 *) Make it possible to create self-signed certificates with 'openssl ca'
2582 in such a way that the self-signed certificate becomes part of the
2583 CA database and uses the same mechanisms for serial number generation
2584 as all other certificate signing. The new flag '-selfsign' enables
2585 this functionality. Adapt CA.sh and CA.pl.in.
2588 *) Add functionality to check the public key of a certificate request
2589 against a given private. This is useful to check that a certificate
2590 request can be signed by that key (self-signing).
2593 *) Make it possible to have multiple active certificates with the same
2594 subject in the CA index file. This is done only if the keyword
2595 'unique_subject' is set to 'no' in the main CA section (default
2596 if 'CA_default') of the configuration file. The value is saved
2597 with the database itself in a separate index attribute file,
2598 named like the index file with '.attr' appended to the name.
2601 *) Generate muti valued AVAs using '+' notation in config files for
2605 *) Support for nameConstraints certificate extension.
2608 *) Support for policyConstraints certificate extension.
2611 *) Support for policyMappings certificate extension.
2614 *) Make sure the default DSA_METHOD implementation only uses its
2615 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
2616 and change its own handlers to be NULL so as to remove unnecessary
2617 indirection. This lets alternative implementations fallback to the
2618 default implementation more easily.
2621 *) Support for directoryName in GeneralName related extensions
2625 *) Make it possible to link applications using Makefile.shared.
2626 Make that possible even when linking against static libraries!
2629 *) Support for single pass processing for S/MIME signing. This now
2630 means that S/MIME signing can be done from a pipe, in addition
2631 cleartext signing (multipart/signed type) is effectively streaming
2632 and the signed data does not need to be all held in memory.
2634 This is done with a new flag PKCS7_STREAM. When this flag is set
2635 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
2636 is done after the data is output (and digests calculated) in
2637 SMIME_write_PKCS7().
2640 *) Add full support for -rpath/-R, both in shared libraries and
2641 applications, at least on the platforms where it's known how
2645 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
2646 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
2647 will now compute a table of multiples of the generator that
2648 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
2649 faster (notably in the case of a single point multiplication,
2650 scalar * generator).
2651 [Nils Larsch, Bodo Moeller]
2653 *) IPv6 support for certificate extensions. The various extensions
2654 which use the IP:a.b.c.d can now take IPv6 addresses using the
2655 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
2659 *) Added an ENGINE that implements RSA by performing private key
2660 exponentiations with the GMP library. The conversions to and from
2661 GMP's mpz_t format aren't optimised nor are any montgomery forms
2662 cached, and on x86 it appears OpenSSL's own performance has caught up.
2663 However there are likely to be other architectures where GMP could
2664 provide a boost. This ENGINE is not built in by default, but it can be
2665 specified at Configure time and should be accompanied by the necessary
2666 linker additions, eg;
2667 ./config -DOPENSSL_USE_GMP -lgmp
2670 *) "openssl engine" will not display ENGINE/DSO load failure errors when
2671 testing availability of engines with "-t" - the old behaviour is
2672 produced by increasing the feature's verbosity with "-tt".
2675 *) ECDSA routines: under certain error conditions uninitialized BN objects
2676 could be freed. Solution: make sure initialization is performed early
2677 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
2681 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
2682 and DH_METHOD (eg. by ENGINE implementations) to override the normal
2683 software implementations. For DSA and DH, parameter generation can
2684 also be overriden by providing the appropriate method callbacks.
2687 *) Change the "progress" mechanism used in key-generation and
2688 primality testing to functions that take a new BN_GENCB pointer in
2689 place of callback/argument pairs. The new API functions have "_ex"
2690 postfixes and the older functions are reimplemented as wrappers for
2691 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
2692 declarations of the old functions to help (graceful) attempts to
2693 migrate to the new functions. Also, the new key-generation API
2694 functions operate on a caller-supplied key-structure and return
2695 success/failure rather than returning a key or NULL - this is to
2696 help make "keygen" another member function of RSA_METHOD etc.
2698 Example for using the new callback interface:
2700 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
2704 BN_GENCB_set(&my_cb, my_callback, my_arg);
2706 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
2707 /* For the meaning of a, b in calls to my_callback(), see the
2708 * documentation of the function that calls the callback.
2709 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
2710 * my_callback should return 1 if it wants BN_is_prime_ex()
2711 * to continue, or 0 to stop.
2716 *) Change the ZLIB compression method to be stateful, and make it
2717 available to TLS with the number defined in
2718 draft-ietf-tls-compression-04.txt.
2721 *) Add the ASN.1 structures and functions for CertificatePair, which
2722 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
2724 CertificatePair ::= SEQUENCE {
2725 forward [0] Certificate OPTIONAL,
2726 reverse [1] Certificate OPTIONAL,
2727 -- at least one of the pair shall be present -- }
2729 Also implement the PEM functions to read and write certificate
2730 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
2732 This needed to be defined, mostly for the sake of the LDAP
2733 attribute crossCertificatePair, but may prove useful elsewhere as
2737 *) Make it possible to inhibit symlinking of shared libraries in
2738 Makefile.shared, for Cygwin's sake.
2741 *) Extend the BIGNUM API by creating a function
2742 void BN_set_negative(BIGNUM *a, int neg);
2743 and a macro that behave like
2744 int BN_is_negative(const BIGNUM *a);
2746 to avoid the need to access 'a->neg' directly in applications.
2749 *) Implement fast modular reduction for pseudo-Mersenne primes
2750 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
2751 EC_GROUP_new_curve_GFp() will now automatically use this
2753 [Nils Larsch <nla@trustcenter.de>]
2755 *) Add new lock type (CRYPTO_LOCK_BN).
2758 *) Change the ENGINE framework to automatically load engines
2759 dynamically from specific directories unless they could be
2760 found to already be built in or loaded. Move all the
2761 current engines except for the cryptodev one to a new
2763 The engines in engines/ are built as shared libraries if
2764 the "shared" options was given to ./Configure or ./config.
2765 Otherwise, they are inserted in libcrypto.a.
2766 /usr/local/ssl/engines is the default directory for dynamic
2767 engines, but that can be overriden at configure time through
2768 the usual use of --prefix and/or --openssldir, and at run
2769 time with the environment variable OPENSSL_ENGINES.
2770 [Geoff Thorpe and Richard Levitte]
2772 *) Add Makefile.shared, a helper makefile to build shared
2773 libraries. Addapt Makefile.org.
2776 *) Add version info to Win32 DLLs.
2777 [Peter 'Luna' Runestig" <peter@runestig.com>]
2779 *) Add new 'medium level' PKCS#12 API. Certificates and keys
2780 can be added using this API to created arbitrary PKCS#12
2781 files while avoiding the low level API.
2783 New options to PKCS12_create(), key or cert can be NULL and
2784 will then be omitted from the output file. The encryption
2785 algorithm NIDs can be set to -1 for no encryption, the mac
2786 iteration count can be set to 0 to omit the mac.
2788 Enhance pkcs12 utility by making the -nokeys and -nocerts
2789 options work when creating a PKCS#12 file. New option -nomac
2790 to omit the mac, NONE can be set for an encryption algorithm.
2791 New code is modified to use the enhanced PKCS12_create()
2792 instead of the low level API.
2795 *) Extend ASN1 encoder to support indefinite length constructed
2796 encoding. This can output sequences tags and octet strings in
2797 this form. Modify pk7_asn1.c to support indefinite length
2798 encoding. This is experimental and needs additional code to
2799 be useful, such as an ASN1 bio and some enhanced streaming
2802 Extend template encode functionality so that tagging is passed
2803 down to the template encoder.
2806 *) Let 'openssl req' fail if an argument to '-newkey' is not
2807 recognized instead of using RSA as a default.
2810 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
2811 As these are not official, they are not included in "ALL";
2812 the "ECCdraft" ciphersuite group alias can be used to select them.
2813 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
2815 *) Add ECDH engine support.
2816 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
2818 *) Add ECDH in new directory crypto/ecdh/.
2819 [Douglas Stebila (Sun Microsystems Laboratories)]
2821 *) Let BN_rand_range() abort with an error after 100 iterations
2822 without success (which indicates a broken PRNG).
2825 *) Change BN_mod_sqrt() so that it verifies that the input value
2826 is really the square of the return value. (Previously,
2827 BN_mod_sqrt would show GIGO behaviour.)
2830 *) Add named elliptic curves over binary fields from X9.62, SECG,
2831 and WAP/WTLS; add OIDs that were still missing.
2833 [Sheueling Chang Shantz and Douglas Stebila
2834 (Sun Microsystems Laboratories)]
2836 *) Extend the EC library for elliptic curves over binary fields
2837 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
2840 EC_GF2m_simple_method
2844 EC_GROUP_new_curve_GF2m
2845 EC_GROUP_set_curve_GF2m
2846 EC_GROUP_get_curve_GF2m
2847 EC_POINT_set_affine_coordinates_GF2m
2848 EC_POINT_get_affine_coordinates_GF2m
2849 EC_POINT_set_compressed_coordinates_GF2m
2851 Point compression for binary fields is disabled by default for
2852 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
2855 As binary polynomials are represented as BIGNUMs, various members
2856 of the EC_GROUP and EC_POINT data structures can be shared
2857 between the implementations for prime fields and binary fields;
2858 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
2859 are essentially identical to their ..._GFp counterparts.
2860 (For simplicity, the '..._GFp' prefix has been dropped from
2861 various internal method names.)
2863 An internal 'field_div' method (similar to 'field_mul' and
2864 'field_sqr') has been added; this is used only for binary fields.
2866 [Sheueling Chang Shantz and Douglas Stebila
2867 (Sun Microsystems Laboratories)]
2869 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
2870 through methods ('mul', 'precompute_mult').
2872 The generic implementations (now internally called 'ec_wNAF_mul'
2873 and 'ec_wNAF_precomputed_mult') remain the default if these
2874 methods are undefined.
2876 [Sheueling Chang Shantz and Douglas Stebila
2877 (Sun Microsystems Laboratories)]
2879 *) New function EC_GROUP_get_degree, which is defined through
2880 EC_METHOD. For curves over prime fields, this returns the bit
2881 length of the modulus.
2883 [Sheueling Chang Shantz and Douglas Stebila
2884 (Sun Microsystems Laboratories)]
2886 *) New functions EC_GROUP_dup, EC_POINT_dup.
2887 (These simply call ..._new and ..._copy).
2889 [Sheueling Chang Shantz and Douglas Stebila
2890 (Sun Microsystems Laboratories)]
2892 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
2893 Polynomials are represented as BIGNUMs (where the sign bit is not
2894 used) in the following functions [macros]:
2897 BN_GF2m_sub [= BN_GF2m_add]
2898 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
2899 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
2900 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
2902 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
2903 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
2904 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
2905 BN_GF2m_cmp [= BN_ucmp]
2907 (Note that only the 'mod' functions are actually for fields GF(2^m).
2908 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
2910 For some functions, an the irreducible polynomial defining a
2911 field can be given as an 'unsigned int[]' with strictly
2912 decreasing elements giving the indices of those bits that are set;
2913 i.e., p[] represents the polynomial
2914 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
2916 p[0] > p[1] > ... > p[k] = 0.
2917 This applies to the following functions:
2922 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
2923 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
2925 BN_GF2m_mod_sqrt_arr
2926 BN_GF2m_mod_solve_quad_arr
2930 Conversion can be performed by the following functions:
2935 bntest.c has additional tests for binary polynomial arithmetic.
2937 Two implementations for BN_GF2m_mod_div() are available.
2938 The default algorithm simply uses BN_GF2m_mod_inv() and
2939 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
2940 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
2941 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
2943 [Sheueling Chang Shantz and Douglas Stebila
2944 (Sun Microsystems Laboratories)]
2946 *) Add new error code 'ERR_R_DISABLED' that can be used when some
2947 functionality is disabled at compile-time.
2948 [Douglas Stebila <douglas.stebila@sun.com>]
2950 *) Change default behaviour of 'openssl asn1parse' so that more
2951 information is visible when viewing, e.g., a certificate:
2953 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
2954 mode the content of non-printable OCTET STRINGs is output in a
2955 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
2956 avoid the appearance of a printable string.
2957 [Nils Larsch <nla@trustcenter.de>]
2959 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
2961 EC_GROUP_set_asn1_flag()
2962 EC_GROUP_get_asn1_flag()
2963 EC_GROUP_set_point_conversion_form()
2964 EC_GROUP_get_point_conversion_form()
2965 These control ASN1 encoding details:
2966 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
2967 has been set to OPENSSL_EC_NAMED_CURVE.
2968 - Points are encoded in uncompressed form by default; options for
2969 asn1_for are as for point2oct, namely
2970 POINT_CONVERSION_COMPRESSED
2971 POINT_CONVERSION_UNCOMPRESSED
2972 POINT_CONVERSION_HYBRID
2974 Also add 'seed' and 'seed_len' members to EC_GROUP with access
2977 EC_GROUP_get0_seed()
2978 EC_GROUP_get_seed_len()
2979 This is used only for ASN1 purposes (so far).
2980 [Nils Larsch <nla@trustcenter.de>]
2982 *) Add 'field_type' member to EC_METHOD, which holds the NID
2983 of the appropriate field type OID. The new function
2984 EC_METHOD_get_field_type() returns this value.
2985 [Nils Larsch <nla@trustcenter.de>]
2990 EC_POINT_point2hex()
2991 EC_POINT_hex2point()
2992 providing useful interfaces to EC_POINT_point2oct() and
2993 EC_POINT_oct2point().
2994 [Nils Larsch <nla@trustcenter.de>]
2996 *) Change internals of the EC library so that the functions
2997 EC_GROUP_set_generator()
2998 EC_GROUP_get_generator()
2999 EC_GROUP_get_order()
3000 EC_GROUP_get_cofactor()
3001 are implemented directly in crypto/ec/ec_lib.c and not dispatched
3002 to methods, which would lead to unnecessary code duplication when
3003 adding different types of curves.
3004 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
3006 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
3007 arithmetic, and such that modified wNAFs are generated
3008 (which avoid length expansion in many cases).
3011 *) Add a function EC_GROUP_check_discriminant() (defined via
3012 EC_METHOD) that verifies that the curve discriminant is non-zero.
3014 Add a function EC_GROUP_check() that makes some sanity tests
3015 on a EC_GROUP, its generator and order. This includes
3016 EC_GROUP_check_discriminant().
3017 [Nils Larsch <nla@trustcenter.de>]
3019 *) Add ECDSA in new directory crypto/ecdsa/.
3021 Add applications 'openssl ecparam' and 'openssl ecdsa'
3022 (these are based on 'openssl dsaparam' and 'openssl dsa').
3024 ECDSA support is also included in various other files across the
3025 library. Most notably,
3026 - 'openssl req' now has a '-newkey ecdsa:file' option;
3027 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
3028 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
3029 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
3030 them suitable for ECDSA where domain parameters must be
3031 extracted before the specific public key;
3032 - ECDSA engine support has been added.
3033 [Nils Larsch <nla@trustcenter.de>]
3035 *) Include some named elliptic curves, and add OIDs from X9.62,
3036 SECG, and WAP/WTLS. Each curve can be obtained from the new
3038 EC_GROUP_new_by_curve_name(),
3039 and the list of available named curves can be obtained with
3040 EC_get_builtin_curves().
3041 Also add a 'curve_name' member to EC_GROUP objects, which can be
3043 EC_GROUP_set_curve_name()
3044 EC_GROUP_get_curve_name()
3045 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
3047 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
3048 was actually never needed) and in BN_mul(). The removal in BN_mul()
3049 required a small change in bn_mul_part_recursive() and the addition
3050 of the functions bn_cmp_part_words(), bn_sub_part_words() and
3051 bn_add_part_words(), which do the same thing as bn_cmp_words(),
3052 bn_sub_words() and bn_add_words() except they take arrays with
3056 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
3058 *) Cleanse PEM buffers before freeing them since they may contain
3060 [Benjamin Bennett <ben@psc.edu>]
3062 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
3063 a ciphersuite string such as "DEFAULT:RSA" cannot enable
3064 authentication-only ciphersuites.
3067 *) Since AES128 and AES256 share a single mask bit in the logic of
3068 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
3069 kludge to work properly if AES128 is available and AES256 isn't.
3072 *) Expand security boundary to match 1.1.1 module.
3075 *) Remove redundant features: hash file source, editing of test vectors
3076 modify fipsld to use external fips_premain.c signature.
3079 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
3080 run algorithm test programs.
3083 *) Make algorithm test programs more tolerant of whitespace.
3086 *) Have SSL/TLS server implementation tolerate "mismatched" record
3087 protocol version while receiving ClientHello even if the
3088 ClientHello is fragmented. (The server can't insist on the
3089 particular protocol version it has chosen before the ServerHello
3090 message has informed the client about his choice.)
3093 *) Load error codes if they are not already present instead of using a
3094 static variable. This allows them to be cleanly unloaded and reloaded.
3097 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
3099 *) Introduce limits to prevent malicious keys being able to
3100 cause a denial of service. (CVE-2006-2940)
3101 [Steve Henson, Bodo Moeller]
3103 *) Fix ASN.1 parsing of certain invalid structures that can result
3104 in a denial of service. (CVE-2006-2937) [Steve Henson]
3106 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
3107 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
3109 *) Fix SSL client code which could crash if connecting to a
3110 malicious SSLv2 server. (CVE-2006-4343)
3111 [Tavis Ormandy and Will Drewry, Google Security Team]
3113 *) Change ciphersuite string processing so that an explicit
3114 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
3115 will no longer include "AES128-SHA"), and any other similar
3116 ciphersuite (same bitmap) from *other* protocol versions (so that
3117 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
3118 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
3119 changes from 0.9.8b and 0.9.8d.
3122 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
3124 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
3125 (CVE-2006-4339) [Ben Laurie and Google Security Team]
3127 *) Change the Unix randomness entropy gathering to use poll() when
3128 possible instead of select(), since the latter has some
3129 undesirable limitations.
3130 [Darryl Miles via Richard Levitte and Bodo Moeller]
3132 *) Disable rogue ciphersuites:
3134 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
3135 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
3136 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
3138 The latter two were purportedly from
3139 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
3142 Also deactive the remaining ciphersuites from
3143 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
3144 unofficial, and the ID has long expired.
3147 *) Fix RSA blinding Heisenbug (problems sometimes occured on
3148 dual-core machines) and other potential thread-safety issues.
3151 Changes between 0.9.7i and 0.9.7j [04 May 2006]
3153 *) Adapt fipsld and the build system to link against the validated FIPS
3154 module in FIPS mode.
3157 *) Fixes for VC++ 2005 build under Windows.
3160 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
3161 from a Windows bash shell such as MSYS. It is autodetected from the
3162 "config" script when run from a VC++ environment. Modify standard VC++
3163 build to use fipscanister.o from the GNU make build.
3166 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
3168 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
3169 The value now differs depending on if you build for FIPS or not.
3170 BEWARE! A program linked with a shared FIPSed libcrypto can't be
3171 safely run with a non-FIPSed libcrypto, as it may crash because of
3172 the difference induced by this change.
3175 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
3177 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
3178 (part of SSL_OP_ALL). This option used to disable the
3179 countermeasure against man-in-the-middle protocol-version
3180 rollback in the SSL 2.0 server implementation, which is a bad
3181 idea. (CVE-2005-2969)
3183 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
3184 for Information Security, National Institute of Advanced Industrial
3185 Science and Technology [AIST], Japan)]
3187 *) Minimal support for X9.31 signatures and PSS padding modes. This is
3188 mainly for FIPS compliance and not fully integrated at this stage.
3191 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
3192 the exponentiation using a fixed-length exponent. (Otherwise,
3193 the information leaked through timing could expose the secret key
3194 after many signatures; cf. Bleichenbacher's attack on DSA with
3198 *) Make a new fixed-window mod_exp implementation the default for
3199 RSA, DSA, and DH private-key operations so that the sequence of
3200 squares and multiplies and the memory access pattern are
3201 independent of the particular secret key. This will mitigate
3202 cache-timing and potential related attacks.
3204 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
3205 and this is automatically used by BN_mod_exp_mont() if the new flag
3206 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
3207 will use this BN flag for private exponents unless the flag
3208 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
3209 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
3211 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
3213 *) Change the client implementation for SSLv23_method() and
3214 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
3215 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
3216 (Previously, the SSL 2.0 backwards compatible Client Hello
3217 message format would be used even with SSL_OP_NO_SSLv2.)
3220 *) Add support for smime-type MIME parameter in S/MIME messages which some
3224 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
3225 a threadsafe manner. Modify rsa code to use new function and add calls
3226 to dsa and dh code (which had race conditions before).
3229 *) Include the fixed error library code in the C error file definitions
3230 instead of fixing them up at runtime. This keeps the error code
3231 structures constant.
3234 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
3236 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
3239 *) Fixes for newer kerberos headers. NB: the casts are needed because
3240 the 'length' field is signed on one version and unsigned on another
3241 with no (?) obvious way to tell the difference, without these VC++
3242 complains. Also the "definition" of FAR (blank) is no longer included
3243 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
3244 some needed definitions.
3247 *) Undo Cygwin change.
3250 *) Added support for proxy certificates according to RFC 3820.
3251 Because they may be a security thread to unaware applications,
3252 they must be explicitely allowed in run-time. See
3253 docs/HOWTO/proxy_certificates.txt for further information.
3256 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
3258 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
3259 server and client random values. Previously
3260 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
3261 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
3263 This change has negligible security impact because:
3265 1. Server and client random values still have 24 bytes of pseudo random
3268 2. Server and client random values are sent in the clear in the initial
3271 3. The master secret is derived using the premaster secret (48 bytes in
3272 size for static RSA ciphersuites) as well as client server and random
3275 The OpenSSL team would like to thank the UK NISCC for bringing this issue
3278 [Stephen Henson, reported by UK NISCC]
3280 *) Use Windows randomness collection on Cygwin.
3283 *) Fix hang in EGD/PRNGD query when communication socket is closed
3284 prematurely by EGD/PRNGD.
3285 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
3287 *) Prompt for pass phrases when appropriate for PKCS12 input format.
3290 *) Back-port of selected performance improvements from development
3291 branch, as well as improved support for PowerPC platforms.
3294 *) Add lots of checks for memory allocation failure, error codes to indicate
3295 failure and freeing up memory if a failure occurs.
3296 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
3298 *) Add new -passin argument to dgst.
3301 *) Perform some character comparisons of different types in X509_NAME_cmp:
3302 this is needed for some certificates that reencode DNs into UTF8Strings
3303 (in violation of RFC3280) and can't or wont issue name rollover
3307 *) Make an explicit check during certificate validation to see that
3308 the CA setting in each certificate on the chain is correct. As a
3309 side effect always do the following basic checks on extensions,
3310 not just when there's an associated purpose to the check:
3312 - if there is an unhandled critical extension (unless the user
3313 has chosen to ignore this fault)
3314 - if the path length has been exceeded (if one is set at all)
3315 - that certain extensions fit the associated purpose (if one has
3319 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
3321 *) Avoid a race condition when CRLs are checked in a multi threaded
3322 environment. This would happen due to the reordering of the revoked
3323 entries during signature checking and serial number lookup. Now the
3324 encoding is cached and the serial number sort performed under a lock.
3325 Add new STACK function sk_is_sorted().
3328 *) Add Delta CRL to the extension code.
3331 *) Various fixes to s3_pkt.c so alerts are sent properly.
3332 [David Holmes <d.holmes@f5.com>]
3334 *) Reduce the chances of duplicate issuer name and serial numbers (in
3335 violation of RFC3280) using the OpenSSL certificate creation utilities.
3336 This is done by creating a random 64 bit value for the initial serial
3337 number when a serial number file is created or when a self signed
3338 certificate is created using 'openssl req -x509'. The initial serial
3339 number file is created using 'openssl x509 -next_serial' in CA.pl
3340 rather than being initialized to 1.
3343 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
3345 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
3346 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
3347 [Joe Orton, Steve Henson]
3349 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
3351 [Joe Orton, Steve Henson]
3353 *) Make it possible to have multiple active certificates with the same
3354 subject in the CA index file. This is done only if the keyword
3355 'unique_subject' is set to 'no' in the main CA section (default
3356 if 'CA_default') of the configuration file. The value is saved
3357 with the database itself in a separate index attribute file,
3358 named like the index file with '.attr' appended to the name.
3361 *) X509 verify fixes. Disable broken certificate workarounds when
3362 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
3363 keyUsage extension present. Don't accept CRLs with unhandled critical
3364 extensions: since verify currently doesn't process CRL extensions this
3365 rejects a CRL with *any* critical extensions. Add new verify error codes
3369 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
3370 A clarification of RFC2560 will require the use of OCTET STRINGs and
3371 some implementations cannot handle the current raw format. Since OpenSSL
3372 copies and compares OCSP nonces as opaque blobs without any attempt at
3373 parsing them this should not create any compatibility issues.
3376 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
3377 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
3378 this HMAC (and other) operations are several times slower than OpenSSL
3382 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
3383 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3385 *) Use the correct content when signing type "other".
3388 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
3390 *) Fix various bugs revealed by running the NISCC test suite:
3392 Stop out of bounds reads in the ASN1 code when presented with
3393 invalid tags (CVE-2003-0543 and CVE-2003-0544).
3395 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
3397 If verify callback ignores invalid public key errors don't try to check
3398 certificate signature with the NULL public key.
3402 *) New -ignore_err option in ocsp application to stop the server
3403 exiting on the first error in a request.
3406 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
3407 if the server requested one: as stated in TLS 1.0 and SSL 3.0
3411 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
3412 extra data after the compression methods not only for TLS 1.0
3413 but also for SSL 3.0 (as required by the specification).
3414 [Bodo Moeller; problem pointed out by Matthias Loepfe]
3416 *) Change X509_certificate_type() to mark the key as exported/exportable
3417 when it's 512 *bits* long, not 512 bytes.
3420 *) Change AES_cbc_encrypt() so it outputs exact multiple of
3421 blocks during encryption.
3424 *) Various fixes to base64 BIO and non blocking I/O. On write
3425 flushes were not handled properly if the BIO retried. On read
3426 data was not being buffered properly and had various logic bugs.
3427 This also affects blocking I/O when the data being decoded is a
3431 *) Various S/MIME bugfixes and compatibility changes:
3432 output correct application/pkcs7 MIME type if
3433 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
3434 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
3435 of files as .eml work). Correctly handle very long lines in MIME
3439 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
3441 *) Countermeasure against the Klima-Pokorny-Rosa extension of
3442 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
3443 a protocol version number mismatch like a decryption error
3444 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
3447 *) Turn on RSA blinding by default in the default implementation
3448 to avoid a timing attack. Applications that don't want it can call
3449 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
3450 They would be ill-advised to do so in most cases.
3451 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
3453 *) Change RSA blinding code so that it works when the PRNG is not
3454 seeded (in this case, the secret RSA exponent is abused as
3455 an unpredictable seed -- if it is not unpredictable, there
3456 is no point in blinding anyway). Make RSA blinding thread-safe
3457 by remembering the creator's thread ID in rsa->blinding and
3458 having all other threads use local one-time blinding factors
3459 (this requires more computation than sharing rsa->blinding, but
3460 avoids excessive locking; and if an RSA object is not shared
3461 between threads, blinding will still be very fast).
3464 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
3465 ENGINE as defaults for all supported algorithms irrespective of
3466 the 'flags' parameter. 'flags' is now honoured, so applications
3467 should make sure they are passing it correctly.
3470 *) Target "mingw" now allows native Windows code to be generated in
3471 the Cygwin environment as well as with the MinGW compiler.
3474 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
3476 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
3477 via timing by performing a MAC computation even if incorrrect
3478 block cipher padding has been found. This is a countermeasure
3479 against active attacks where the attacker has to distinguish
3480 between bad padding and a MAC verification error. (CVE-2003-0078)
3482 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
3483 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
3484 Martin Vuagnoux (EPFL, Ilion)]
3486 *) Make the no-err option work as intended. The intention with no-err
3487 is not to have the whole error stack handling routines removed from
3488 libcrypto, it's only intended to remove all the function name and
3489 reason texts, thereby removing some of the footprint that may not
3490 be interesting if those errors aren't displayed anyway.
3492 NOTE: it's still possible for any application or module to have it's
3493 own set of error texts inserted. The routines are there, just not
3494 used by default when no-err is given.
3497 *) Add support for FreeBSD on IA64.
3498 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
3500 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
3501 Kerberos function mit_des_cbc_cksum(). Before this change,
3502 the value returned by DES_cbc_cksum() was like the one from
3503 mit_des_cbc_cksum(), except the bytes were swapped.
3504 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
3506 *) Allow an application to disable the automatic SSL chain building.
3507 Before this a rather primitive chain build was always performed in
3508 ssl3_output_cert_chain(): an application had no way to send the
3509 correct chain if the automatic operation produced an incorrect result.
3511 Now the chain builder is disabled if either:
3513 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
3515 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
3517 The reasoning behind this is that an application would not want the
3518 auto chain building to take place if extra chain certificates are
3519 present and it might also want a means of sending no additional
3520 certificates (for example the chain has two certificates and the
3524 *) Add the possibility to build without the ENGINE framework.
3525 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3527 *) Under Win32 gmtime() can return NULL: check return value in
3528 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
3531 *) DSA routines: under certain error conditions uninitialized BN objects
3532 could be freed. Solution: make sure initialization is performed early
3533 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
3534 Nils Larsch <nla@trustcenter.de> via PR#459)
3537 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
3538 checked on reconnect on the client side, therefore session resumption
3539 could still fail with a "ssl session id is different" error. This
3540 behaviour is masked when SSL_OP_ALL is used due to
3541 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
3542 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3543 followup to PR #377.
3546 *) IA-32 assembler support enhancements: unified ELF targets, support
3547 for SCO/Caldera platforms, fix for Cygwin shared build.
3550 *) Add support for FreeBSD on sparc64. As a consequence, support for
3551 FreeBSD on non-x86 processors is separate from x86 processors on
3552 the config script, much like the NetBSD support.
3553 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
3555 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
3557 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
3560 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
3561 code (06) was taken as the first octet of the session ID and the last
3562 octet was ignored consequently. As a result SSLv2 client side session
3563 caching could not have worked due to the session ID mismatch between
3565 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3569 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
3570 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
3574 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
3575 seems that in spite of existing for more than a year, many application
3576 author have done nothing to provide the necessary callbacks, which
3577 means that this particular engine will not work properly anywhere.
3578 This is a very unfortunate situation which forces us, in the name
3579 of usability, to give the hw_ncipher.c a static lock, which is part
3581 NOTE: This is for the 0.9.7 series ONLY. This hack will never
3582 appear in 0.9.8 or later. We EXPECT application authors to have
3583 dealt properly with this when 0.9.8 is released (unless we actually
3584 make such changes in the libcrypto locking code that changes will
3585 have to be made anyway).
3588 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
3589 octets have been read, EOF or an error occurs. Without this change
3590 some truncated ASN1 structures will not produce an error.
3593 *) Disable Heimdal support, since it hasn't been fully implemented.
3594 Still give the possibility to force the use of Heimdal, but with
3595 warnings and a request that patches get sent to openssl-dev.
3598 *) Add the VC-CE target, introduce the WINCE sysname, and add
3599 INSTALL.WCE and appropriate conditionals to make it build.
3600 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3602 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
3603 cygssl-x.y.z.dll, where x, y and z are the major, minor and
3604 edit numbers of the version.
3605 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
3607 *) Introduce safe string copy and catenation functions
3608 (BUF_strlcpy() and BUF_strlcat()).
3609 [Ben Laurie (CHATS) and Richard Levitte]
3611 *) Avoid using fixed-size buffers for one-line DNs.
3612 [Ben Laurie (CHATS)]
3614 *) Add BUF_MEM_grow_clean() to avoid information leakage when
3615 resizing buffers containing secrets, and use where appropriate.
3616 [Ben Laurie (CHATS)]
3618 *) Avoid using fixed size buffers for configuration file location.
3619 [Ben Laurie (CHATS)]
3621 *) Avoid filename truncation for various CA files.
3622 [Ben Laurie (CHATS)]
3624 *) Use sizeof in preference to magic numbers.
3625 [Ben Laurie (CHATS)]
3627 *) Avoid filename truncation in cert requests.
3628 [Ben Laurie (CHATS)]
3630 *) Add assertions to check for (supposedly impossible) buffer
3632 [Ben Laurie (CHATS)]
3634 *) Don't cache truncated DNS entries in the local cache (this could
3635 potentially lead to a spoofing attack).
3636 [Ben Laurie (CHATS)]
3638 *) Fix various buffers to be large enough for hex/decimal
3639 representations in a platform independent manner.
3640 [Ben Laurie (CHATS)]
3642 *) Add CRYPTO_realloc_clean() to avoid information leakage when
3643 resizing buffers containing secrets, and use where appropriate.
3644 [Ben Laurie (CHATS)]
3646 *) Add BIO_indent() to avoid much slightly worrying code to do
3648 [Ben Laurie (CHATS)]
3650 *) Convert sprintf()/BIO_puts() to BIO_printf().
3651 [Ben Laurie (CHATS)]
3653 *) buffer_gets() could terminate with the buffer only half
3655 [Ben Laurie (CHATS)]
3657 *) Add assertions to prevent user-supplied crypto functions from
3658 overflowing internal buffers by having large block sizes, etc.
3659 [Ben Laurie (CHATS)]
3661 *) New OPENSSL_assert() macro (similar to assert(), but enabled
3663 [Ben Laurie (CHATS)]
3665 *) Eliminate unused copy of key in RC4.
3666 [Ben Laurie (CHATS)]
3668 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
3669 [Ben Laurie (CHATS)]
3671 *) Fix off-by-one error in EGD path.
3672 [Ben Laurie (CHATS)]
3674 *) If RANDFILE path is too long, ignore instead of truncating.
3675 [Ben Laurie (CHATS)]
3677 *) Eliminate unused and incorrectly sized X.509 structure
3679 [Ben Laurie (CHATS)]
3681 *) Eliminate unused and dangerous function knumber().
3682 [Ben Laurie (CHATS)]
3684 *) Eliminate unused and dangerous structure, KSSL_ERR.
3685 [Ben Laurie (CHATS)]
3687 *) Protect against overlong session ID context length in an encoded
3688 session object. Since these are local, this does not appear to be
3690 [Ben Laurie (CHATS)]
3692 *) Change from security patch (see 0.9.6e below) that did not affect
3693 the 0.9.6 release series:
3695 Remote buffer overflow in SSL3 protocol - an attacker could
3696 supply an oversized master key in Kerberos-enabled versions.
3698 [Ben Laurie (CHATS)]
3700 *) Change the SSL kerb5 codes to match RFC 2712.
3703 *) Make -nameopt work fully for req and add -reqopt switch.
3704 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
3706 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
3707 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
3709 *) Make sure tests can be performed even if the corresponding algorithms
3710 have been removed entirely. This was also the last step to make
3711 OpenSSL compilable with DJGPP under all reasonable conditions.
3712 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
3714 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
3715 to allow version independent disabling of normally unselected ciphers,
3716 which may be activated as a side-effect of selecting a single cipher.
3718 (E.g., cipher list string "RSA" enables ciphersuites that are left
3719 out of "ALL" because they do not provide symmetric encryption.
3720 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
3721 [Lutz Jaenicke, Bodo Moeller]
3723 *) Add appropriate support for separate platform-dependent build
3724 directories. The recommended way to make a platform-dependent
3725 build directory is the following (tested on Linux), maybe with
3728 # Place yourself outside of the OpenSSL source tree. In
3729 # this example, the environment variable OPENSSL_SOURCE
3730 # is assumed to contain the absolute OpenSSL source directory.
3731 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
3732 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
3733 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
3734 mkdir -p `dirname $F`
3735 ln -s $OPENSSL_SOURCE/$F $F
3738 To be absolutely sure not to disturb the source tree, a "make clean"
3739 is a good thing. If it isn't successfull, don't worry about it,
3740 it probably means the source directory is very clean.
3743 *) Make sure any ENGINE control commands make local copies of string
3744 pointers passed to them whenever necessary. Otherwise it is possible
3745 the caller may have overwritten (or deallocated) the original string
3746 data when a later ENGINE operation tries to use the stored values.
3747 [Götz Babin-Ebell <babinebell@trustcenter.de>]
3749 *) Improve diagnostics in file reading and command-line digests.
3750 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
3752 *) Add AES modes CFB and OFB to the object database. Correct an
3753 error in AES-CFB decryption.
3756 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
3757 allows existing EVP_CIPHER_CTX structures to be reused after
3758 calling EVP_*Final(). This behaviour is used by encryption
3759 BIOs and some applications. This has the side effect that
3760 applications must explicitly clean up cipher contexts with
3761 EVP_CIPHER_CTX_cleanup() or they will leak memory.
3764 *) Check the values of dna and dnb in bn_mul_recursive before calling
3765 bn_mul_comba (a non zero value means the a or b arrays do not contain
3766 n2 elements) and fallback to bn_mul_normal if either is not zero.
3769 *) Fix escaping of non-ASCII characters when using the -subj option
3770 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
3773 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
3774 form for "surname", serialNumber has no short form.
3775 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
3776 therefore remove "mail" short name for "internet 7".
3777 The OID for unique identifiers in X509 certificates is
3778 x500UniqueIdentifier, not uniqueIdentifier.
3779 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
3782 *) Add an "init" command to the ENGINE config module and auto initialize
3783 ENGINEs. Without any "init" command the ENGINE will be initialized
3784 after all ctrl commands have been executed on it. If init=1 the
3785 ENGINE is initailized at that point (ctrls before that point are run
3786 on the uninitialized ENGINE and after on the initialized one). If
3787 init=0 then the ENGINE will not be iniatialized at all.
3790 *) Fix the 'app_verify_callback' interface so that the user-defined
3791 argument is actually passed to the callback: In the
3792 SSL_CTX_set_cert_verify_callback() prototype, the callback
3793 declaration has been changed from
3796 int (*cb)(X509_STORE_CTX *,void *);
3797 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
3798 i=s->ctx->app_verify_callback(&ctx)
3799 has been changed into
3800 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
3802 To update applications using SSL_CTX_set_cert_verify_callback(),
3803 a dummy argument can be added to their callback functions.
3804 [D. K. Smetters <smetters@parc.xerox.com>]
3806 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
3807 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
3809 *) Add and OPENSSL_LOAD_CONF define which will cause
3810 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
3811 This allows older applications to transparently support certain
3812 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
3813 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
3814 load the config file and OPENSSL_add_all_algorithms_conf() which will
3815 always load it have also been added.
3818 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
3819 Adjust NIDs and EVP layer.
3820 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3822 *) Config modules support in openssl utility.
3824 Most commands now load modules from the config file,
3825 though in a few (such as version) this isn't done
3826 because it couldn't be used for anything.
3828 In the case of ca and req the config file used is
3829 the same as the utility itself: that is the -config
3830 command line option can be used to specify an
3834 *) Move default behaviour from OPENSSL_config(). If appname is NULL
3835 use "openssl_conf" if filename is NULL use default openssl config file.
3838 *) Add an argument to OPENSSL_config() to allow the use of an alternative
3839 config section name. Add a new flag to tolerate a missing config file
3840 and move code to CONF_modules_load_file().
3843 *) Support for crypto accelerator cards from Accelerated Encryption
3844 Processing, www.aep.ie. (Use engine 'aep')
3845 The support was copied from 0.9.6c [engine] and adapted/corrected
3846 to work with the new engine framework.
3847 [AEP Inc. and Richard Levitte]
3849 *) Support for SureWare crypto accelerator cards from Baltimore
3850 Technologies. (Use engine 'sureware')
3851 The support was copied from 0.9.6c [engine] and adapted
3852 to work with the new engine framework.
3855 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
3856 make the newer ENGINE framework commands for the CHIL engine work.
3857 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
3859 *) Make it possible to produce shared libraries on ReliantUNIX.
3860 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
3862 *) Add the configuration target debug-linux-ppro.
3863 Make 'openssl rsa' use the general key loading routines
3864 implemented in apps.c, and make those routines able to
3865 handle the key format FORMAT_NETSCAPE and the variant
3867 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3869 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
3870 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3872 *) Add -keyform to rsautl, and document -engine.
3873 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
3875 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
3876 BIO_R_NO_SUCH_FILE error code rather than the generic
3877 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
3880 *) Add new functions
3882 ERR_peek_last_error_line
3883 ERR_peek_last_error_line_data.
3884 These are similar to
3887 ERR_peek_error_line_data,
3888 but report on the latest error recorded rather than the first one
3889 still in the error queue.
3890 [Ben Laurie, Bodo Moeller]
3892 *) default_algorithms option in ENGINE config module. This allows things
3894 default_algorithms = ALL
3895 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
3898 *) Prelminary ENGINE config module.
3901 *) New experimental application configuration code.
3904 *) Change the AES code to follow the same name structure as all other
3905 symmetric ciphers, and behave the same way. Move everything to
3906 the directory crypto/aes, thereby obsoleting crypto/rijndael.
3907 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3909 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
3910 [Ben Laurie and Theo de Raadt]
3912 *) Add option to output public keys in req command.
3913 [Massimiliano Pala madwolf@openca.org]
3915 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
3916 (up to about 10% better than before for P-192 and P-224).
3919 *) New functions/macros
3921 SSL_CTX_set_msg_callback(ctx, cb)
3922 SSL_CTX_set_msg_callback_arg(ctx, arg)
3923 SSL_set_msg_callback(ssl, cb)
3924 SSL_set_msg_callback_arg(ssl, arg)
3926 to request calling a callback function
3928 void cb(int write_p, int version, int content_type,
3929 const void *buf, size_t len, SSL *ssl, void *arg)
3931 whenever a protocol message has been completely received
3932 (write_p == 0) or sent (write_p == 1). Here 'version' is the
3933 protocol version according to which the SSL library interprets
3934 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
3935 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
3936 the content type as defined in the SSL 3.0/TLS 1.0 protocol
3937 specification (change_cipher_spec(20), alert(21), handshake(22)).
3938 'buf' and 'len' point to the actual message, 'ssl' to the
3939 SSL object, and 'arg' is the application-defined value set by
3940 SSL[_CTX]_set_msg_callback_arg().
3942 'openssl s_client' and 'openssl s_server' have new '-msg' options
3943 to enable a callback that displays all protocol messages.
3946 *) Change the shared library support so shared libraries are built as
3947 soon as the corresponding static library is finished, and thereby get
3948 openssl and the test programs linked against the shared library.
3949 This still only happens when the keyword "shard" has been given to
3950 the configuration scripts.
3952 NOTE: shared library support is still an experimental thing, and
3953 backward binary compatibility is still not guaranteed.
3954 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
3956 *) Add support for Subject Information Access extension.
3957 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3959 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
3960 additional bytes when new memory had to be allocated, not just
3961 when reusing an existing buffer.
3964 *) New command line and configuration option 'utf8' for the req command.
3965 This allows field values to be specified as UTF8 strings.
3968 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
3969 runs for the former and machine-readable output for the latter.
3972 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
3973 of the e-mail address in the DN (i.e., it will go into a certificate
3974 extension only). The new configuration file option 'email_in_dn = no'
3975 has the same effect.
3976 [Massimiliano Pala madwolf@openca.org]
3978 *) Change all functions with names starting with des_ to be starting
3979 with DES_ instead. Add wrappers that are compatible with libdes,
3980 but are named _ossl_old_des_*. Finally, add macros that map the
3981 des_* symbols to the corresponding _ossl_old_des_* if libdes
3982 compatibility is desired. If OpenSSL 0.9.6c compatibility is
3983 desired, the des_* symbols will be mapped to DES_*, with one
3986 Since we provide two compatibility mappings, the user needs to
3987 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
3988 compatibility is desired. The default (i.e., when that macro
3989 isn't defined) is OpenSSL 0.9.6c compatibility.
3991 There are also macros that enable and disable the support of old
3992 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
3993 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
3994 are defined, the default will apply: to support the old des routines.
3996 In either case, one must include openssl/des.h to get the correct
3997 definitions. Do not try to just include openssl/des_old.h, that
4000 NOTE: This is a major break of an old API into a new one. Software
4001 authors are encouraged to switch to the DES_ style functions. Some
4002 time in the future, des_old.h and the libdes compatibility functions
4003 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
4004 default), and then completely removed.
4007 *) Test for certificates which contain unsupported critical extensions.
4008 If such a certificate is found during a verify operation it is
4009 rejected by default: this behaviour can be overridden by either
4010 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
4011 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
4012 X509_supported_extension() has also been added which returns 1 if a
4013 particular extension is supported.
4016 *) Modify the behaviour of EVP cipher functions in similar way to digests
4017 to retain compatibility with existing code.
4020 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
4021 compatibility with existing code. In particular the 'ctx' parameter does
4022 not have to be to be initialized before the call to EVP_DigestInit() and
4023 it is tidied up after a call to EVP_DigestFinal(). New function
4024 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
4025 EVP_MD_CTX_copy() changed to not require the destination to be
4026 initialized valid and new function EVP_MD_CTX_copy_ex() added which
4027 requires the destination to be valid.
4029 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
4030 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
4033 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
4034 so that complete 'Handshake' protocol structures are kept in memory
4035 instead of overwriting 'msg_type' and 'length' with 'body' data.
4038 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
4039 [Massimo Santin via Richard Levitte]
4041 *) Major restructuring to the underlying ENGINE code. This includes
4042 reduction of linker bloat, separation of pure "ENGINE" manipulation
4043 (initialisation, etc) from functionality dealing with implementations
4044 of specific crypto iterfaces. This change also introduces integrated
4045 support for symmetric ciphers and digest implementations - so ENGINEs
4046 can now accelerate these by providing EVP_CIPHER and EVP_MD
4047 implementations of their own. This is detailed in crypto/engine/README
4048 as it couldn't be adequately described here. However, there are a few
4049 API changes worth noting - some RSA, DSA, DH, and RAND functions that
4050 were changed in the original introduction of ENGINE code have now
4051 reverted back - the hooking from this code to ENGINE is now a good
4052 deal more passive and at run-time, operations deal directly with
4053 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
4054 dereferencing through an ENGINE pointer any more. Also, the ENGINE
4055 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
4056 they were not being used by the framework as there is no concept of a
4057 BIGNUM_METHOD and they could not be generalised to the new
4058 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
4059 ENGINE_cpy() has been removed as it cannot be consistently defined in
4063 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
4066 *) Change mkdef.pl to sort symbols that get the same entry number,
4067 and make sure the automatically generated functions ERR_load_*
4068 become part of libeay.num as well.
4071 *) New function SSL_renegotiate_pending(). This returns true once
4072 renegotiation has been requested (either SSL_renegotiate() call
4073 or HelloRequest/ClientHello receveived from the peer) and becomes
4074 false once a handshake has been completed.
4075 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
4076 sends a HelloRequest, but does not ensure that a handshake takes
4077 place. SSL_renegotiate_pending() is useful for checking if the
4078 client has followed the request.)
4081 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
4082 By default, clients may request session resumption even during
4083 renegotiation (if session ID contexts permit); with this option,
4084 session resumption is possible only in the first handshake.
4086 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
4087 more bits available for options that should not be part of
4088 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
4091 *) Add some demos for certificate and certificate request creation.
4094 *) Make maximum certificate chain size accepted from the peer application
4095 settable (SSL*_get/set_max_cert_list()), as proposed by
4096 "Douglas E. Engert" <deengert@anl.gov>.
4099 *) Add support for shared libraries for Unixware-7
4100 (Boyd Lynn Gerber <gerberb@zenez.com>).
4103 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
4104 be done prior to destruction. Use this to unload error strings from
4105 ENGINEs that load their own error strings. NB: This adds two new API
4106 functions to "get" and "set" this destroy handler in an ENGINE.
4109 *) Alter all existing ENGINE implementations (except "openssl" and
4110 "openbsd") to dynamically instantiate their own error strings. This
4111 makes them more flexible to be built both as statically-linked ENGINEs
4112 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
4113 Also, add stub code to each that makes building them as self-contained
4114 shared-libraries easier (see README.ENGINE).
4117 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
4118 implementations into applications that are completely implemented in
4119 self-contained shared-libraries. The "dynamic" ENGINE exposes control
4120 commands that can be used to configure what shared-library to load and
4121 to control aspects of the way it is handled. Also, made an update to
4122 the README.ENGINE file that brings its information up-to-date and
4123 provides some information and instructions on the "dynamic" ENGINE
4124 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
4127 *) Make it possible to unload ranges of ERR strings with a new
4128 "ERR_unload_strings" function.
4131 *) Add a copy() function to EVP_MD.
4134 *) Make EVP_MD routines take a context pointer instead of just the
4135 md_data void pointer.
4138 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
4139 that the digest can only process a single chunk of data
4140 (typically because it is provided by a piece of
4141 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
4142 is only going to provide a single chunk of data, and hence the
4143 framework needn't accumulate the data for oneshot drivers.
4146 *) As with "ERR", make it possible to replace the underlying "ex_data"
4147 functions. This change also alters the storage and management of global
4148 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
4149 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
4150 index counters. The API functions that use this state have been changed
4151 to take a "class_index" rather than pointers to the class's local STACK
4152 and counter, and there is now an API function to dynamically create new
4153 classes. This centralisation allows us to (a) plug a lot of the
4154 thread-safety problems that existed, and (b) makes it possible to clean
4155 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
4156 such data would previously have always leaked in application code and
4157 workarounds were in place to make the memory debugging turn a blind eye
4158 to it. Application code that doesn't use this new function will still
4159 leak as before, but their memory debugging output will announce it now
4160 rather than letting it slide.
4162 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
4163 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
4164 has a return value to indicate success or failure.
4167 *) Make it possible to replace the underlying "ERR" functions such that the
4168 global state (2 LHASH tables and 2 locks) is only used by the "default"
4169 implementation. This change also adds two functions to "get" and "set"
4170 the implementation prior to it being automatically set the first time
4171 any other ERR function takes place. Ie. an application can call "get",
4172 pass the return value to a module it has just loaded, and that module
4173 can call its own "set" function using that value. This means the
4174 module's "ERR" operations will use (and modify) the error state in the
4175 application and not in its own statically linked copy of OpenSSL code.
4178 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
4179 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
4180 the operation, and provides a more encapsulated way for external code
4181 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
4182 to use these functions rather than manually incrementing the counts.
4184 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
4187 *) Add EVP test program.
4190 *) Add symmetric cipher support to ENGINE. Expect the API to change!
4193 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
4194 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
4195 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
4196 These allow a CRL to be built without having to access X509_CRL fields
4197 directly. Modify 'ca' application to use new functions.
4200 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
4201 bug workarounds. Rollback attack detection is a security feature.
4202 The problem will only arise on OpenSSL servers when TLSv1 is not
4203 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
4204 Software authors not wanting to support TLSv1 will have special reasons
4205 for their choice and can explicitly enable this option.
4206 [Bodo Moeller, Lutz Jaenicke]
4208 *) Rationalise EVP so it can be extended: don't include a union of
4209 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
4210 (similar to those existing for EVP_CIPHER_CTX).
4215 EVP_MD_CTX_init(&md); /* new function call */
4216 EVP_DigestInit(&md, EVP_sha1());
4217 EVP_DigestUpdate(&md, in, len);
4218 EVP_DigestFinal(&md, out, NULL);
4219 EVP_MD_CTX_cleanup(&md); /* new function call */
4223 *) Make DES key schedule conform to the usual scheme, as well as
4224 correcting its structure. This means that calls to DES functions
4225 now have to pass a pointer to a des_key_schedule instead of a
4226 plain des_key_schedule (which was actually always a pointer
4229 des_key_schedule ks;
4231 des_set_key_checked(..., &ks);
4232 des_ncbc_encrypt(..., &ks, ...);
4234 (Note that a later change renames 'des_...' into 'DES_...'.)
4237 *) Initial reduction of linker bloat: the use of some functions, such as
4238 PEM causes large amounts of unused functions to be linked in due to
4239 poor organisation. For example pem_all.c contains every PEM function
4240 which has a knock on effect of linking in large amounts of (unused)
4241 ASN1 code. Grouping together similar functions and splitting unrelated
4242 functions prevents this.
4245 *) Cleanup of EVP macros.
4248 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
4249 correct _ecb suffix.
4252 *) Add initial OCSP responder support to ocsp application. The
4253 revocation information is handled using the text based index
4254 use by the ca application. The responder can either handle
4255 requests generated internally, supplied in files (for example
4256 via a CGI script) or using an internal minimal server.
4259 *) Add configuration choices to get zlib compression for TLS.
4262 *) Changes to Kerberos SSL for RFC 2712 compliance:
4263 1. Implemented real KerberosWrapper, instead of just using
4264 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
4265 2. Implemented optional authenticator field of KerberosWrapper.
4267 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
4268 and authenticator structs; see crypto/krb5/.
4270 Generalized Kerberos calls to support multiple Kerberos libraries.
4271 [Vern Staats <staatsvr@asc.hpc.mil>,
4272 Jeffrey Altman <jaltman@columbia.edu>
4273 via Richard Levitte]
4275 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
projects / openssl.git / blob