5 Changes between 1.0.1 and 1.1.0 [xx XXX xxxx]
7 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
8 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implmeneted
9 outside the validated module in the FIPS capable OpenSSL.
12 *) Minor change to DRBG entropy callback semantics. In some cases
13 there is no mutiple of the block length between min_len and
14 max_len. Allow the callback to return more than max_len bytes
15 of entropy but discard any extra: it is the callback's responsibility
16 to ensure that the extra data discarded does not impact the
17 requested amount of entropy.
20 *) Add PRNG security strength checks to RSA, DSA and ECDSA using
21 information in FIPS186-3, SP800-57 and SP800-131A.
24 *) CCM support via EVP. Interface is very similar to GCM case except we
25 must supply all data in one chunk (i.e. no update, final) and the
26 message length must be supplied if AAD is used. Add algorithm test
30 *) Initial version of POST overhaul. Add POST callback to allow the status
31 of POST to be monitored and/or failures induced. Modify fips_test_suite
32 to use callback. Always run all selftests even if one fails.
35 *) XTS support including algorithm test driver in the fips_gcmtest program.
36 Note: this does increase the maximum key length from 32 to 64 bytes but
37 there should be no binary compatibility issues as existing applications
38 will never use XTS mode.
41 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
42 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
43 performs algorithm blocking for unapproved PRNG types. Also do not
44 set PRNG type in FIPS_mode_set(): leave this to the application.
45 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
46 the standard OpenSSL PRNG: set additional data to a date time vector.
49 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
50 This shouldn't present any incompatibility problems because applications
51 shouldn't be using these directly and any that are will need to rethink
52 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
55 *) Extensive self tests and health checking required by SP800-90 DRBG.
56 Remove strength parameter from FIPS_drbg_instantiate and always
57 instantiate at maximum supported strength.
60 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
63 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
66 *) New function DH_compute_key_padded() to compute a DH key and pad with
67 leading zeroes if needed: this complies with SP800-56A et al.
70 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
71 anything, incomplete, subject to change and largely untested at present.
74 *) Modify fipscanisteronly build option to only build the necessary object
75 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
78 *) Add experimental option FIPSSYMS to give all symbols in
79 fipscanister.o and FIPS or fips prefix. This will avoid
80 conflicts with future versions of OpenSSL. Add perl script
81 util/fipsas.pl to preprocess assembly language source files
82 and rename any affected symbols.
85 *) Add selftest checks and algorithm block of non-fips algorithms in
86 FIPS mode. Remove DES2 from selftests.
89 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
90 return internal method without any ENGINE dependencies. Add new
91 tiny fips sign and verify functions.
94 *) New build option no-ec2m to disable characteristic 2 code.
97 *) New build option "fipscanisteronly". This only builds fipscanister.o
98 and (currently) associated fips utilities. Uses the file Makefile.fips
99 instead of Makefile.org as the prototype.
102 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
103 Update fips_gcmtest to use IV generator.
106 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
107 setting output buffer to NULL. The *Final function must be
108 called although it will not retrieve any additional data. The tag
109 can be set or retrieved with a ctrl. The IV length is by default 12
110 bytes (96 bits) but can be set to an alternative value. If the IV
111 length exceeds the maximum IV length (currently 16 bytes) it cannot be
115 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
116 underlying do_cipher function handles all cipher semantics itself
117 including padding and finalisation. This is useful if (for example)
118 an ENGINE cipher handles block padding itself. The behaviour of
119 do_cipher is subtly changed if this flag is set: the return value
120 is the number of characters written to the output buffer (zero is
121 no longer an error code) or a negative error code. Also if the
122 input buffer is NULL and length 0 finalisation should be performed.
125 *) If a candidate issuer certificate is already part of the constructed
126 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
129 *) Improve forward-security support: add functions
131 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
132 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
134 for use by SSL/TLS servers; the callback function will be called whenever a
135 new session is created, and gets to decide whether the session may be
136 cached to make it resumable (return 0) or not (return 1). (As by the
137 SSL/TLS protocol specifications, the session_id sent by the server will be
138 empty to indicate that the session is not resumable; also, the server will
139 not generate RFC 4507 (RFC 5077) session tickets.)
141 A simple reasonable callback implementation is to return is_forward_secure.
142 This parameter will be set to 1 or 0 depending on the ciphersuite selected
143 by the SSL/TLS server library, indicating whether it can provide forward
145 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
147 *) Add Next Protocol Negotiation,
148 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
149 disabled with a no-npn flag to config or Configure. Code donated
151 [Adam Langley <agl@google.com> and Ben Laurie]
153 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
154 all platforms. Move ssize_t definition from e_os.h to the public
155 header file e_os2.h as it now appears in public header file cms.h
158 *) New function OPENSSL_gmtime_diff to find the difference in days
159 and seconds between two tm structures. This will be used to provide
160 additional functionality for ASN1_TIME.
163 *) New -sigopt option to the ca, req and x509 utilities. Additional
164 signature parameters can be passed using this option and in
168 *) Add RSA PSS signing function. This will generate and set the
169 appropriate AlgorithmIdentifiers for PSS based on those in the
170 corresponding EVP_MD_CTX structure. No application support yet.
173 *) Support for companion algorithm specific ASN1 signing routines.
174 New function ASN1_item_sign_ctx() signs a pre-initialised
175 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
176 the appropriate parameters.
179 *) Add new algorithm specific ASN1 verification initialisation function
180 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
181 handling will be the same no matter what EVP_PKEY_METHOD is used.
182 Add a PSS handler to support verification of PSS signatures: checked
183 against a number of sample certificates.
186 *) Add signature printing for PSS. Add PSS OIDs.
187 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
189 *) Add algorithm specific signature printing. An individual ASN1 method
190 can now print out signatures instead of the standard hex dump.
192 More complex signatures (e.g. PSS) can print out more meaningful
193 information. Include DSA version that prints out the signature
197 *) Add -trusted_first option which attempts to find certificates in the
198 trusted store even if an untrusted chain is also supplied.
201 *) Initial experimental support for explicitly trusted non-root CAs.
202 OpenSSL still tries to build a complete chain to a root but if an
203 intermediate CA has a trust setting included that is used. The first
204 setting is used: whether to trust or reject.
207 *) New -verify_name option in command line utilities to set verification
211 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
212 Add CMAC pkey methods.
215 *) Experiemental regnegotiation in s_server -www mode. If the client
216 browses /reneg connection is renegotiated. If /renegcert it is
217 renegotiated requesting a certificate.
220 *) Add an "external" session cache for debugging purposes to s_server. This
221 should help trace issues which normally are only apparent in deployed
222 multi-process servers.
225 *) Experiemental password based recipient info support for CMS library:
226 implementing RFC3211.
229 *) Split password based encryption into PBES2 and PBKDF2 functions. This
230 neatly separates the code into cipher and PBE sections and is required
231 for some algorithms that split PBES2 into separate pieces (such as
235 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
236 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
237 BIO_set_cipher() and some obscure PEM functions were changed so they
238 can now return an error. The RAND changes required a change to the
239 RAND_METHOD structure.
242 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
243 a gcc attribute to warn if the result of a function is ignored. This
244 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
245 whose return value is often ignored.
248 Changes between 1.0.0e and 1.0.1 [xx XXX xxxx]
250 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
251 ENGINE is used then we cannot handle that in the FIPS module so we
252 keep original code iff non-FIPS operations are allowed.
255 *) Add -attime option to openssl verify.
256 [Peter Eckersley <pde@eff.org> and Ben Laurie]
258 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
261 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
262 FIPS EC methods unconditionally for now.
265 *) New build option no-ec2m to disable characteristic 2 code.
268 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
269 all cases can be covered as some introduce binary incompatibilities.
272 *) Redirect RSA operations to FIPS module including keygen,
273 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
276 *) Add similar low level API blocking to ciphers.
279 *) Low level digest APIs are not approved in FIPS mode: any attempt
280 to use these will cause a fatal error. Applications that *really* want
281 to use them can use the private_* version instead.
284 *) Redirect cipher operations to FIPS module for FIPS builds.
287 *) Redirect digest operations to FIPS module for FIPS builds.
290 *) Update build system to add "fips" flag which will link in fipscanister.o
291 for static and shared library builds embedding a signature if needed.
294 *) Output TLS supported curves in preference order instead of numerical
295 order. This is currently hardcoded for the highest order curves first.
296 This should be configurable so applications can judge speed vs strength.
299 *) Add TLS v1.2 server support for client authentication.
302 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
306 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
307 FIPS modules versions.
310 *) Add TLS v1.2 client side support for client authentication. Keep cache
311 of handshake records longer as we don't know the hash algorithm to use
312 until after the certificate request message is received.
315 *) Initial TLS v1.2 client support. Add a default signature algorithms
316 extension including all the algorithms we support. Parse new signature
317 format in client key exchange. Relax some ECC signing restrictions for
318 TLS v1.2 as indicated in RFC5246.
321 *) Add server support for TLS v1.2 signature algorithms extension. Switch
322 to new signature format when needed using client digest preference.
323 All server ciphersuites should now work correctly in TLS v1.2. No client
324 support yet and no support for client certificates.
327 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
328 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
329 ciphersuites. At present only RSA key exchange ciphersuites work with
330 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
331 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
332 and version checking.
335 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
336 with this defined it will not be affected by any changes to ssl internal
337 structures. Add several utility functions to allow openssl application
338 to work with OPENSSL_NO_SSL_INTERN defined.
342 [Tom Wu <tjw@cs.stanford.edu> and Ben Laurie]
344 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
347 *) Add EC_GFp_nistp224_method(), a 64-bit optimized implementation for
348 elliptic curve NIST-P224 with constant-time single point multiplication on
349 typical inputs. EC_GROUP_new_by_curve_name() will automatically use this
350 (while EC_GROUP_new_curve_GFp() currently won't and prefers the more
351 flexible implementations).
353 The implementation requires support for the nonstandard type __uint128_t,
354 and so is disabled by default. To include this in your build of OpenSSL,
355 use -DEC_NISTP224_64_GCC_128 on the Configure (or config) command line,
356 and run "make depend" (or "make update").
357 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
359 *) Permit abbreviated handshakes when renegotiating using the function
360 SSL_renegotiate_abbreviated().
361 [Robin Seggelmann <seggelmann@fh-muenster.de>]
363 *) Add call to ENGINE_register_all_complete() to
364 ENGINE_load_builtin_engines(), so some implementations get used
365 automatically instead of needing explicit application support.
368 *) Add support for TLS key exporter as described in RFC5705.
369 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
371 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
372 a few changes are required:
374 Add SSL_OP_NO_TLSv1_1 flag.
376 Update version checking logic to handle version 1.1.
377 Add explicit IV handling (ported from DTLS code).
378 Add command line options to s_client/s_server.
381 Changes between 1.0.0d and 1.0.0e [xx XXX xxxx]
383 *) Add protection against ECDSA timing attacks as mentioned in the paper
384 by Billy Bob Brumley and Nicola Tuveri, see:
386 http://eprint.iacr.org/2011/232.pdf
388 [Billy Bob Brumley and Nicola Tuveri]
390 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
392 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
393 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
395 *) Fix bug in string printing code: if *any* escaping is enabled we must
396 escape the escape character (backslash) or the resulting string is
400 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
402 *) Disable code workaround for ancient and obsolete Netscape browsers
403 and servers: an attacker can use it in a ciphersuite downgrade attack.
404 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
407 *) Fixed J-PAKE implementation error, originally discovered by
408 Sebastien Martini, further info and confirmation from Stefan
409 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
412 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
414 *) Fix extension code to avoid race conditions which can result in a buffer
415 overrun vulnerability: resumed sessions must not be modified as they can
416 be shared by multiple threads. CVE-2010-3864
419 *) Fix WIN32 build system to correctly link an ENGINE directory into
423 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
425 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
427 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
429 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
431 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
432 context. The operation can be customised via the ctrl mechanism in
433 case ENGINEs want to include additional functionality.
436 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
439 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
440 output hashes compatible with older versions of OpenSSL.
441 [Willy Weisz <weisz@vcpc.univie.ac.at>]
443 *) Fix compression algorithm handling: if resuming a session use the
444 compression algorithm of the resumed session instead of determining
445 it from client hello again. Don't allow server to change algorithm.
448 *) Add load_crls() function to apps tidying load_certs() too. Add option
449 to verify utility to allow additional CRLs to be included.
452 *) Update OCSP request code to permit adding custom headers to the request:
453 some responders need this.
456 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
458 [Julia Lawall <julia@diku.dk>]
460 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
461 needlessly dereferenced structures, used obsolete functions and
462 didn't handle all updated verify codes correctly.
465 *) Disable MD2 in the default configuration.
468 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
469 indicate the initial BIO being pushed or popped. This makes it possible
470 to determine whether the BIO is the one explicitly called or as a result
471 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
472 it handles reference counts correctly and doesn't zero out the I/O bio
473 when it is not being explicitly popped. WARNING: applications which
474 included workarounds for the old buggy behaviour will need to be modified
475 or they could free up already freed BIOs.
478 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
479 renaming to all platforms (within the 0.9.8 branch, this was
480 done conditionally on Netware platforms to avoid a name clash).
481 [Guenter <lists@gknw.net>]
483 *) Add ECDHE and PSK support to DTLS.
484 [Michael Tuexen <tuexen@fh-muenster.de>]
486 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
490 *) Add "missing" function EVP_MD_flags() (without this the only way to
491 retrieve a digest flags is by accessing the structure directly. Update
492 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
493 or cipher is registered as in the "from" argument. Print out all
494 registered digests in the dgst usage message instead of manually
495 attempting to work them out.
498 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
499 this allows the use of compression and extensions. Change default cipher
500 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
501 by default unless an application cipher string requests it.
504 *) Alter match criteria in PKCS12_parse(). It used to try to use local
505 key ids to find matching certificates and keys but some PKCS#12 files
506 don't follow the (somewhat unwritten) rules and this strategy fails.
507 Now just gather all certificates together and the first private key
508 then look for the first certificate that matches the key.
511 *) Support use of registered digest and cipher names for dgst and cipher
512 commands instead of having to add each one as a special case. So now
519 openssl dgst -sha256 foo
521 and this works for ENGINE based algorithms too.
525 *) Update Gost ENGINE to support parameter files.
526 [Victor B. Wagner <vitus@cryptocom.ru>]
528 *) Support GeneralizedTime in ca utility.
529 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
531 *) Enhance the hash format used for certificate directory links. The new
532 form uses the canonical encoding (meaning equivalent names will work
533 even if they aren't identical) and uses SHA1 instead of MD5. This form
534 is incompatible with the older format and as a result c_rehash should
535 be used to rebuild symbolic links.
538 *) Make PKCS#8 the default write format for private keys, replacing the
539 traditional format. This form is standardised, more secure and doesn't
540 include an implicit MD5 dependency.
543 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
544 committed to OpenSSL should pass this lot as a minimum.
547 *) Add session ticket override functionality for use by EAP-FAST.
548 [Jouni Malinen <j@w1.fi>]
550 *) Modify HMAC functions to return a value. Since these can be implemented
551 in an ENGINE errors can occur.
554 *) Type-checked OBJ_bsearch_ex.
557 *) Type-checked OBJ_bsearch. Also some constification necessitated
558 by type-checking. Still to come: TXT_DB, bsearch(?),
559 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
563 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
564 seconds to a tm structure directly, instead of going through OS
565 specific date routines. This avoids any issues with OS routines such
566 as the year 2038 bug. New *_adj() functions for ASN1 time structures
567 and X509_time_adj_ex() to cover the extended range. The existing
568 X509_time_adj() is still usable and will no longer have any date issues.
571 *) Delta CRL support. New use deltas option which will attempt to locate
572 and search any appropriate delta CRLs available.
574 This work was sponsored by Google.
577 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
578 code and add additional score elements. Validate alternate CRL paths
579 as part of the CRL checking and indicate a new error "CRL path validation
580 error" in this case. Applications wanting additional details can use
581 the verify callback and check the new "parent" field. If this is not
582 NULL CRL path validation is taking place. Existing applications wont
583 see this because it requires extended CRL support which is off by
586 This work was sponsored by Google.
589 *) Support for freshest CRL extension.
591 This work was sponsored by Google.
594 *) Initial indirect CRL support. Currently only supported in the CRLs
595 passed directly and not via lookup. Process certificate issuer
596 CRL entry extension and lookup CRL entries by bother issuer name
597 and serial number. Check and process CRL issuer entry in IDP extension.
599 This work was sponsored by Google.
602 *) Add support for distinct certificate and CRL paths. The CRL issuer
603 certificate is validated separately in this case. Only enabled if
604 an extended CRL support flag is set: this flag will enable additional
605 CRL functionality in future.
607 This work was sponsored by Google.
610 *) Add support for policy mappings extension.
612 This work was sponsored by Google.
615 *) Fixes to pathlength constraint, self issued certificate handling,
616 policy processing to align with RFC3280 and PKITS tests.
618 This work was sponsored by Google.
621 *) Support for name constraints certificate extension. DN, email, DNS
622 and URI types are currently supported.
624 This work was sponsored by Google.
627 *) To cater for systems that provide a pointer-based thread ID rather
628 than numeric, deprecate the current numeric thread ID mechanism and
629 replace it with a structure and associated callback type. This
630 mechanism allows a numeric "hash" to be extracted from a thread ID in
631 either case, and on platforms where pointers are larger than 'long',
632 mixing is done to help ensure the numeric 'hash' is usable even if it
633 can't be guaranteed unique. The default mechanism is to use "&errno"
634 as a pointer-based thread ID to distinguish between threads.
636 Applications that want to provide their own thread IDs should now use
637 CRYPTO_THREADID_set_callback() to register a callback that will call
638 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
640 Note that ERR_remove_state() is now deprecated, because it is tied
641 to the assumption that thread IDs are numeric. ERR_remove_state(0)
642 to free the current thread's error state should be replaced by
643 ERR_remove_thread_state(NULL).
645 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
646 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
647 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
648 application was previously providing a numeric thread callback that
649 was inappropriate for distinguishing threads, then uniqueness might
650 have been obtained with &errno that happened immediately in the
651 intermediate development versions of OpenSSL; this is no longer the
652 case, the numeric thread callback will now override the automatic use
654 [Geoff Thorpe, with help from Bodo Moeller]
656 *) Initial support for different CRL issuing certificates. This covers a
657 simple case where the self issued certificates in the chain exist and
658 the real CRL issuer is higher in the existing chain.
660 This work was sponsored by Google.
663 *) Removed effectively defunct crypto/store from the build.
666 *) Revamp of STACK to provide stronger type-checking. Still to come:
667 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
668 ASN1_STRING, CONF_VALUE.
671 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
672 RAM on SSL connections. This option can save about 34k per idle SSL.
675 *) Revamp of LHASH to provide stronger type-checking. Still to come:
676 STACK, TXT_DB, bsearch, qsort.
679 *) Initial support for Cryptographic Message Syntax (aka CMS) based
680 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
681 support for data, signedData, compressedData, digestedData and
682 encryptedData, envelopedData types included. Scripts to check against
683 RFC4134 examples draft and interop and consistency checks of many
684 content types and variants.
687 *) Add options to enc utility to support use of zlib compression BIO.
690 *) Extend mk1mf to support importing of options and assembly language
691 files from Configure script, currently only included in VC-WIN32.
692 The assembly language rules can now optionally generate the source
693 files from the associated perl scripts.
696 *) Implement remaining functionality needed to support GOST ciphersuites.
697 Interop testing has been performed using CryptoPro implementations.
698 [Victor B. Wagner <vitus@cryptocom.ru>]
700 *) s390x assembler pack.
703 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
707 *) Implement Opaque PRF Input TLS extension as specified in
708 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
709 official specification yet and no extension type assignment by
710 IANA exists, this extension (for now) will have to be explicitly
711 enabled when building OpenSSL by providing the extension number
712 to use. For example, specify an option
714 -DTLSEXT_TYPE_opaque_prf_input=0x9527
716 to the "config" or "Configure" script to enable the extension,
717 assuming extension number 0x9527 (which is a completely arbitrary
718 and unofficial assignment based on the MD5 hash of the Internet
719 Draft). Note that by doing so, you potentially lose
720 interoperability with other TLS implementations since these might
721 be using the same extension number for other purposes.
723 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
724 opaque PRF input value to use in the handshake. This will create
725 an interal copy of the length-'len' string at 'src', and will
726 return non-zero for success.
728 To get more control and flexibility, provide a callback function
731 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
732 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
736 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
739 Callback function 'cb' will be called in handshakes, and is
740 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
741 Argument 'arg' is for application purposes (the value as given to
742 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
743 be provided to the callback function). The callback function
744 has to return non-zero to report success: usually 1 to use opaque
745 PRF input just if possible, or 2 to enforce use of the opaque PRF
746 input. In the latter case, the library will abort the handshake
747 if opaque PRF input is not successfully negotiated.
749 Arguments 'peerinput' and 'len' given to the callback function
750 will always be NULL and 0 in the case of a client. A server will
751 see the client's opaque PRF input through these variables if
752 available (NULL and 0 otherwise). Note that if the server
753 provides an opaque PRF input, the length must be the same as the
754 length of the client's opaque PRF input.
756 Note that the callback function will only be called when creating
757 a new session (session resumption can resume whatever was
758 previously negotiated), and will not be called in SSL 2.0
759 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
760 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
761 for applications that need to enforce opaque PRF input.
765 *) Update ssl code to support digests other than SHA1+MD5 for handshake
768 [Victor B. Wagner <vitus@cryptocom.ru>]
770 *) Add RFC4507 support to OpenSSL. This includes the corrections in
771 RFC4507bis. The encrypted ticket format is an encrypted encoded
772 SSL_SESSION structure, that way new session features are automatically
775 If a client application caches session in an SSL_SESSION structure
776 support is transparent because tickets are now stored in the encoded
779 The SSL_CTX structure automatically generates keys for ticket
780 protection in servers so again support should be possible
781 with no application modification.
783 If a client or server wishes to disable RFC4507 support then the option
784 SSL_OP_NO_TICKET can be set.
786 Add a TLS extension debugging callback to allow the contents of any client
787 or server extensions to be examined.
789 This work was sponsored by Google.
792 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
793 OpenSSL should now compile cleanly on gcc 4.2
794 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
796 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
797 support including streaming MAC support: this is required for GOST
799 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
801 *) Add option -stream to use PKCS#7 streaming in smime utility. New
802 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
803 to output in BER and PEM format.
806 *) Experimental support for use of HMAC via EVP_PKEY interface. This
807 allows HMAC to be handled via the EVP_DigestSign*() interface. The
808 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
809 ENGINE support for HMAC keys which are unextractable. New -mac and
810 -macopt options to dgst utility.
813 *) New option -sigopt to dgst utility. Update dgst to use
814 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
815 alternative signing paramaters such as X9.31 or PSS in the dgst
819 *) Change ssl_cipher_apply_rule(), the internal function that does
820 the work each time a ciphersuite string requests enabling
821 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
822 removing ("!foo+bar") a class of ciphersuites: Now it maintains
823 the order of disabled ciphersuites such that those ciphersuites
824 that most recently went from enabled to disabled not only stay
825 in order with respect to each other, but also have higher priority
826 than other disabled ciphersuites the next time ciphersuites are
829 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
830 the same ciphersuites as with "HIGH" alone, but in a specific
831 order where the PSK ciphersuites come first (since they are the
832 most recently disabled ciphersuites when "HIGH" is parsed).
834 Also, change ssl_create_cipher_list() (using this new
835 funcionality) such that between otherwise identical
836 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
840 *) Change ssl_create_cipher_list() so that it automatically
841 arranges the ciphersuites in reasonable order before starting
842 to process the rule string. Thus, the definition for "DEFAULT"
843 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
844 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
845 This makes it much easier to arrive at a reasonable default order
846 in applications for which anonymous ciphers are OK (meaning
847 that you can't actually use DEFAULT).
848 [Bodo Moeller; suggested by Victor Duchovni]
850 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
851 processing) into multiple integers instead of setting
852 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
853 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
854 (These masks as well as the individual bit definitions are hidden
855 away into the non-exported interface ssl/ssl_locl.h, so this
856 change to the definition of the SSL_CIPHER structure shouldn't
857 affect applications.) This give us more bits for each of these
858 categories, so there is no longer a need to coagulate AES128 and
859 AES256 into a single algorithm bit, and to coagulate Camellia128
860 and Camellia256 into a single algorithm bit, which has led to all
863 Thus, among other things, the kludge introduced in 0.9.7m and
864 0.9.8e for masking out AES256 independently of AES128 or masking
865 out Camellia256 independently of AES256 is not needed here in 0.9.9.
867 With the change, we also introduce new ciphersuite aliases that
868 so far were missing: "AES128", "AES256", "CAMELLIA128", and
872 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
873 Use the leftmost N bytes of the signature input if the input is
874 larger than the prime q (with N being the size in bytes of q).
877 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
878 it yet and it is largely untested.
881 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
884 *) Initial incomplete changes to avoid need for function casts in OpenSSL
885 some compilers (gcc 4.2 and later) reject their use. Safestack is
886 reimplemented. Update ASN1 to avoid use of legacy functions.
889 *) Win32/64 targets are linked with Winsock2.
892 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
893 to external functions. This can be used to increase CRL handling
894 efficiency especially when CRLs are very large by (for example) storing
895 the CRL revoked certificates in a database.
898 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
899 new CRLs added to a directory can be used. New command line option
900 -verify_return_error to s_client and s_server. This causes real errors
901 to be returned by the verify callback instead of carrying on no matter
902 what. This reflects the way a "real world" verify callback would behave.
905 *) GOST engine, supporting several GOST algorithms and public key formats.
906 Kindly donated by Cryptocom.
909 *) Partial support for Issuing Distribution Point CRL extension. CRLs
910 partitioned by DP are handled but no indirect CRL or reason partitioning
911 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
912 selected via a scoring technique which handles IDP and AKID in CRLs.
915 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
916 will ultimately be used for all verify operations: this will remove the
917 X509_STORE dependency on certificate verification and allow alternative
918 lookup methods. X509_STORE based implementations of these two callbacks.
921 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
922 Modify get_crl() to find a valid (unexpired) CRL if possible.
925 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
926 this would be called X509_CRL_cmp() but that name is already used by
927 a function that just compares CRL issuer names. Cache several CRL
928 extensions in X509_CRL structure and cache CRLDP in X509.
931 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
932 this maps equivalent X509_NAME structures into a consistent structure.
933 Name comparison can then be performed rapidly using memcmp().
936 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
940 *) Allow digests to supply their own micalg string for S/MIME type using
941 the ctrl EVP_MD_CTRL_MICALG.
944 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
945 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
946 ctrl. It can then customise the structure before and/or after signing
950 *) New function OBJ_add_sigid() to allow application defined signature OIDs
951 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
952 to free up any added signature OIDs.
955 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
956 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
957 digest and cipher tables. New options added to openssl utility:
958 list-message-digest-algorithms and list-cipher-algorithms.
961 *) Change the array representation of binary polynomials: the list
962 of degrees of non-zero coefficients is now terminated with -1.
963 Previously it was terminated with 0, which was also part of the
964 value; thus, the array representation was not applicable to
965 polynomials where t^0 has coefficient zero. This change makes
966 the array representation useful in a more general context.
969 *) Various modifications and fixes to SSL/TLS cipher string
970 handling. For ECC, the code now distinguishes between fixed ECDH
971 with RSA certificates on the one hand and with ECDSA certificates
972 on the other hand, since these are separate ciphersuites. The
973 unused code for Fortezza ciphersuites has been removed.
975 For consistency with EDH, ephemeral ECDH is now called "EECDH"
976 (not "ECDHE"). For consistency with the code for DH
977 certificates, use of ECDH certificates is now considered ECDH
978 authentication, not RSA or ECDSA authentication (the latter is
979 merely the CA's signing algorithm and not actively used in the
982 The temporary ciphersuite alias "ECCdraft" is no longer
983 available, and ECC ciphersuites are no longer excluded from "ALL"
984 and "DEFAULT". The following aliases now exist for RFC 4492
985 ciphersuites, most of these by analogy with the DH case:
987 kECDHr - ECDH cert, signed with RSA
988 kECDHe - ECDH cert, signed with ECDSA
989 kECDH - ECDH cert (signed with either RSA or ECDSA)
990 kEECDH - ephemeral ECDH
991 ECDH - ECDH cert or ephemeral ECDH
997 AECDH - anonymous ECDH
998 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
1002 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
1003 Use correct micalg parameters depending on digest(s) in signed message.
1006 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
1007 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
1010 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
1011 an engine to register a method. Add ENGINE lookups for methods and
1012 functional reference processing.
1015 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
1016 EVP_{Sign,Verify}* which allow an application to customise the signature
1020 *) New -resign option to smime utility. This adds one or more signers
1021 to an existing PKCS#7 signedData structure. Also -md option to use an
1022 alternative message digest algorithm for signing.
1025 *) Tidy up PKCS#7 routines and add new functions to make it easier to
1026 create PKCS7 structures containing multiple signers. Update smime
1027 application to support multiple signers.
1030 *) New -macalg option to pkcs12 utility to allow setting of an alternative
1034 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
1035 Reorganize PBE internals to lookup from a static table using NIDs,
1036 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
1037 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
1038 PRF which will be automatically used with PBES2.
1041 *) Replace the algorithm specific calls to generate keys in "req" with the
1045 *) Update PKCS#7 enveloped data routines to use new API. This is now
1046 supported by any public key method supporting the encrypt operation. A
1047 ctrl is added to allow the public key algorithm to examine or modify
1048 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
1052 *) Add a ctrl to asn1 method to allow a public key algorithm to express
1053 a default digest type to use. In most cases this will be SHA1 but some
1054 algorithms (such as GOST) need to specify an alternative digest. The
1055 return value indicates how strong the prefernce is 1 means optional and
1056 2 is mandatory (that is it is the only supported type). Modify
1057 ASN1_item_sign() to accept a NULL digest argument to indicate it should
1058 use the default md. Update openssl utilities to use the default digest
1059 type for signing if it is not explicitly indicated.
1062 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
1063 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
1064 signing method from the key type. This effectively removes the link
1065 between digests and public key types.
1068 *) Add an OID cross reference table and utility functions. Its purpose is to
1069 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
1070 rsaEncryption. This will allow some of the algorithm specific hackery
1071 needed to use the correct OID to be removed.
1074 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
1075 structures for PKCS7_sign(). They are now set up by the relevant public
1079 *) Add provisional EC pkey method with support for ECDSA and ECDH.
1082 *) Add support for key derivation (agreement) in the API, DH method and
1086 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
1087 public and private key formats. As a side effect these add additional
1088 command line functionality not previously available: DSA signatures can be
1089 generated and verified using pkeyutl and DH key support and generation in
1094 [Oliver Tappe <zooey@hirschkaefer.de>]
1096 *) New make target "install_html_docs" installs HTML renditions of the
1098 [Oliver Tappe <zooey@hirschkaefer.de>]
1100 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
1101 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
1102 support key and parameter generation and add initial key generation
1103 functionality for RSA.
1106 *) Add functions for main EVP_PKEY_method operations. The undocumented
1107 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
1108 EVP_PKEY_{encrypt,decrypt}_old.
1111 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
1112 key API, doesn't do much yet.
1115 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
1116 public key algorithms. New option to openssl utility:
1117 "list-public-key-algorithms" to print out info.
1120 *) Implement the Supported Elliptic Curves Extension for
1121 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1124 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
1125 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
1128 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
1129 utilities such as rsa, dsa, dsaparam etc except they process any key
1133 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
1134 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
1135 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
1139 *) Initial support for pluggable public key ASN1.
1140 De-spaghettify the public key ASN1 handling. Move public and private
1141 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
1142 algorithm specific handling to a single module within the relevant
1143 algorithm directory. Add functions to allow (near) opaque processing
1144 of public and private key structures.
1147 *) Implement the Supported Point Formats Extension for
1148 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1151 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
1152 for the psk identity [hint] and the psk callback functions to the
1153 SSL_SESSION, SSL and SSL_CTX structure.
1156 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
1160 SSL_CTX_use_psk_identity_hint
1161 SSL_get_psk_identity_hint
1162 SSL_get_psk_identity
1163 SSL_use_psk_identity_hint
1165 [Mika Kousa and Pasi Eronen of Nokia Corporation]
1167 *) Add RFC 3161 compliant time stamp request creation, response generation
1168 and response verification functionality.
1169 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
1171 *) Add initial support for TLS extensions, specifically for the server_name
1172 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1173 have new members for a host name. The SSL data structure has an
1174 additional member SSL_CTX *initial_ctx so that new sessions can be
1175 stored in that context to allow for session resumption, even after the
1176 SSL has been switched to a new SSL_CTX in reaction to a client's
1177 server_name extension.
1179 New functions (subject to change):
1181 SSL_get_servername()
1182 SSL_get_servername_type()
1185 New CTRL codes and macros (subject to change):
1187 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1188 - SSL_CTX_set_tlsext_servername_callback()
1189 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1190 - SSL_CTX_set_tlsext_servername_arg()
1191 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1193 openssl s_client has a new '-servername ...' option.
1195 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1196 '-key2 ...', '-servername_fatal' (subject to change). This allows
1197 testing the HostName extension for a specific single host name ('-cert'
1198 and '-key' remain fallbacks for handshakes without HostName
1199 negotiation). If the unrecogninzed_name alert has to be sent, this by
1200 default is a warning; it becomes fatal with the '-servername_fatal'
1203 [Peter Sylvester, Remy Allais, Christophe Renou]
1205 *) Whirlpool hash implementation is added.
1208 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
1209 bn(64,32). Because of instruction set limitations it doesn't have
1210 any negative impact on performance. This was done mostly in order
1211 to make it possible to share assembler modules, such as bn_mul_mont
1212 implementations, between 32- and 64-bit builds without hassle.
1215 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
1216 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
1220 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
1221 dedicated Montgomery multiplication procedure, is introduced.
1222 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
1223 "64-bit" performance on certain 32-bit targets.
1226 *) New option SSL_OP_NO_COMP to disable use of compression selectively
1227 in SSL structures. New SSL ctrl to set maximum send fragment size.
1228 Save memory by seeting the I/O buffer sizes dynamically instead of
1229 using the maximum available value.
1232 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
1233 in addition to the text details.
1236 *) Very, very preliminary EXPERIMENTAL support for printing of general
1237 ASN1 structures. This currently produces rather ugly output and doesn't
1238 handle several customised structures at all.
1241 *) Integrated support for PVK file format and some related formats such
1242 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
1243 these in the 'rsa' and 'dsa' utilities.
1246 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
1249 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
1250 place for the (very old) "NETSCAPE" format certificates which are now
1251 handled using new ASN1 code equivalents.
1254 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
1255 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
1256 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
1259 *) Modify CRL distribution points extension code to print out previously
1260 unsupported fields. Enhance extension setting code to allow setting of
1264 *) Add print and set support for Issuing Distribution Point CRL extension.
1267 *) Change 'Configure' script to enable Camellia by default.
1270 Changes between 0.9.8r and 0.9.8s [xx XXX xxxx]
1272 *) Add protection against ECDSA timing attacks as mentioned in the paper
1273 by Billy Bob Brumley and Nicola Tuveri, see:
1275 http://eprint.iacr.org/2011/232.pdf
1277 [Billy Bob Brumley and Nicola Tuveri]
1279 Changes between 0.9.8q and 0.9.8r [8 Feb 2011]
1281 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
1282 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
1284 *) Fix bug in string printing code: if *any* escaping is enabled we must
1285 escape the escape character (backslash) or the resulting string is
1289 Changes between 0.9.8p and 0.9.8q [2 Dec 2010]
1291 *) Disable code workaround for ancient and obsolete Netscape browsers
1292 and servers: an attacker can use it in a ciphersuite downgrade attack.
1293 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
1296 *) Fixed J-PAKE implementation error, originally discovered by
1297 Sebastien Martini, further info and confirmation from Stefan
1298 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
1301 Changes between 0.9.8o and 0.9.8p [16 Nov 2010]
1303 *) Fix extension code to avoid race conditions which can result in a buffer
1304 overrun vulnerability: resumed sessions must not be modified as they can
1305 be shared by multiple threads. CVE-2010-3864
1308 *) Fix for double free bug in ssl/s3_clnt.c CVE-2010-2939
1311 *) Don't reencode certificate when calculating signature: cache and use
1312 the original encoding instead. This makes signature verification of
1313 some broken encodings work correctly.
1316 *) ec2_GF2m_simple_mul bugfix: compute correct result if the output EC_POINT
1317 is also one of the inputs.
1318 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
1320 *) Don't repeatedly append PBE algorithms to table if they already exist.
1321 Sort table on each new add. This effectively makes the table read only
1322 after all algorithms are added and subsequent calls to PKCS12_pbe_add
1326 Changes between 0.9.8n and 0.9.8o [01 Jun 2010]
1328 [NB: OpenSSL 0.9.8o and later 0.9.8 patch levels were released after
1331 *) Correct a typo in the CMS ASN1 module which can result in invalid memory
1332 access or freeing data twice (CVE-2010-0742)
1333 [Steve Henson, Ronald Moesbergen <intercommit@gmail.com>]
1335 *) Add SHA2 algorithms to SSL_library_init(). SHA2 is becoming far more
1336 common in certificates and some applications which only call
1337 SSL_library_init and not OpenSSL_add_all_algorithms() will fail.
1341 Reduce copying into .apps and .test in makevms.com
1342 Don't try to use blank CA certificate in CA.com
1343 Allow use of C files from original directories in maketests.com
1344 [Steven M. Schweda" <sms@antinode.info>]
1346 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
1348 *) When rejecting SSL/TLS records due to an incorrect version number, never
1349 update s->server with a new major version number. As of
1350 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
1351 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
1352 the previous behavior could result in a read attempt at NULL when
1353 receiving specific incorrect SSL/TLS records once record payload
1354 protection is active. (CVE-2010-0740)
1355 [Bodo Moeller, Adam Langley <agl@chromium.org>]
1357 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
1358 could be crashed if the relevant tables were not present (e.g. chrooted).
1359 [Tomas Hoger <thoger@redhat.com>]
1361 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
1363 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
1364 [Martin Olsson, Neel Mehta]
1366 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
1367 accommodate for stack sorting, always a write lock!).
1370 *) On some versions of WIN32 Heap32Next is very slow. This can cause
1371 excessive delays in the RAND_poll(): over a minute. As a workaround
1372 include a time check in the inner Heap32Next loop too.
1375 *) The code that handled flushing of data in SSL/TLS originally used the
1376 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
1377 the problem outlined in PR#1949. The fix suggested there however can
1378 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
1379 of Apache). So instead simplify the code to flush unconditionally.
1380 This should be fine since flushing with no data to flush is a no op.
1383 *) Handle TLS versions 2.0 and later properly and correctly use the
1384 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
1385 off ancient servers have a habit of sticking around for a while...
1388 *) Modify compression code so it frees up structures without using the
1389 ex_data callbacks. This works around a problem where some applications
1390 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
1391 restarting) then use compression (e.g. SSL with compression) later.
1392 This results in significant per-connection memory leaks and
1393 has caused some security issues including CVE-2008-1678 and
1397 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
1398 change when encrypting or decrypting.
1401 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
1402 connect and renegotiate with servers which do not support RI.
1403 Until RI is more widely deployed this option is enabled by default.
1406 *) Add "missing" ssl ctrls to clear options and mode.
1409 *) If client attempts to renegotiate and doesn't support RI respond with
1410 a no_renegotiation alert as required by RFC5746. Some renegotiating
1411 TLS clients will continue a connection gracefully when they receive
1412 the alert. Unfortunately OpenSSL mishandled this alert and would hang
1413 waiting for a server hello which it will never receive. Now we treat a
1414 received no_renegotiation alert as a fatal error. This is because
1415 applications requesting a renegotiation might well expect it to succeed
1416 and would have no code in place to handle the server denying it so the
1417 only safe thing to do is to terminate the connection.
1420 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
1421 peer supports secure renegotiation and 0 otherwise. Print out peer
1422 renegotiation support in s_client/s_server.
1425 *) Replace the highly broken and deprecated SPKAC certification method with
1426 the updated NID creation version. This should correctly handle UTF8.
1429 *) Implement RFC5746. Re-enable renegotiation but require the extension
1430 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
1431 turns out to be a bad idea. It has been replaced by
1432 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
1433 SSL_CTX_set_options(). This is really not recommended unless you
1434 know what you are doing.
1435 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
1437 *) Fixes to stateless session resumption handling. Use initial_ctx when
1438 issuing and attempting to decrypt tickets in case it has changed during
1439 servername handling. Use a non-zero length session ID when attempting
1440 stateless session resumption: this makes it possible to determine if
1441 a resumption has occurred immediately after receiving server hello
1442 (several places in OpenSSL subtly assume this) instead of later in
1446 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
1447 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
1448 fixes for a few places where the return code is not checked
1450 [Julia Lawall <julia@diku.dk>]
1452 *) Add --strict-warnings option to Configure script to include devteam
1453 warnings in other configurations.
1456 *) Add support for --libdir option and LIBDIR variable in makefiles. This
1457 makes it possible to install openssl libraries in locations which
1458 have names other than "lib", for example "/usr/lib64" which some
1460 [Steve Henson, based on patch from Jeremy Utley]
1462 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
1463 X690 8.9.12 and can produce some misleading textual output of OIDs.
1464 [Steve Henson, reported by Dan Kaminsky]
1466 *) Delete MD2 from algorithm tables. This follows the recommendation in
1467 several standards that it is not used in new applications due to
1468 several cryptographic weaknesses. For binary compatibility reasons
1469 the MD2 API is still compiled in by default.
1472 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
1476 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
1477 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
1479 [Guenter <lists@gknw.net>]
1481 *) Fix the server certificate chain building code to use X509_verify_cert(),
1482 it used to have an ad-hoc builder which was unable to cope with anything
1483 other than a simple chain.
1484 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
1486 *) Don't check self signed certificate signatures in X509_verify_cert()
1487 by default (a flag can override this): it just wastes time without
1488 adding any security. As a useful side effect self signed root CAs
1489 with non-FIPS digests are now usable in FIPS mode.
1492 *) In dtls1_process_out_of_seq_message() the check if the current message
1493 is already buffered was missing. For every new message was memory
1494 allocated, allowing an attacker to perform an denial of service attack
1495 with sending out of seq handshake messages until there is no memory
1496 left. Additionally every future messege was buffered, even if the
1497 sequence number made no sense and would be part of another handshake.
1498 So only messages with sequence numbers less than 10 in advance will be
1499 buffered. (CVE-2009-1378)
1500 [Robin Seggelmann, discovered by Daniel Mentz]
1502 *) Records are buffered if they arrive with a future epoch to be
1503 processed after finishing the corresponding handshake. There is
1504 currently no limitation to this buffer allowing an attacker to perform
1505 a DOS attack with sending records with future epochs until there is no
1506 memory left. This patch adds the pqueue_size() function to detemine
1507 the size of a buffer and limits the record buffer to 100 entries.
1509 [Robin Seggelmann, discovered by Daniel Mentz]
1511 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
1512 parent structure is freed. (CVE-2009-1379)
1515 *) Handle non-blocking I/O properly in SSL_shutdown() call.
1516 [Darryl Miles <darryl-mailinglists@netbauds.net>]
1519 [Ilya O. <vrghost@gmail.com>]
1521 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
1523 *) Disable renegotiation completely - this fixes a severe security
1524 problem (CVE-2009-3555) at the cost of breaking all
1525 renegotiation. Renegotiation can be re-enabled by setting
1526 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
1527 run-time. This is really not recommended unless you know what
1531 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
1533 *) Don't set val to NULL when freeing up structures, it is freed up by
1534 underlying code. If sizeof(void *) > sizeof(long) this can result in
1535 zeroing past the valid field. (CVE-2009-0789)
1536 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
1538 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
1539 checked correctly. This would allow some invalid signed attributes to
1540 appear to verify correctly. (CVE-2009-0591)
1541 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1543 *) Reject UniversalString and BMPString types with invalid lengths. This
1544 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
1545 a legal length. (CVE-2009-0590)
1548 *) Set S/MIME signing as the default purpose rather than setting it
1549 unconditionally. This allows applications to override it at the store
1553 *) Permit restricted recursion of ASN1 strings. This is needed in practice
1554 to handle some structures.
1557 *) Improve efficiency of mem_gets: don't search whole buffer each time
1559 [Jeremy Shapiro <jnshapir@us.ibm.com>]
1561 *) New -hex option for openssl rand.
1564 *) Print out UTF8String and NumericString when parsing ASN1.
1567 *) Support NumericString type for name components.
1570 *) Allow CC in the environment to override the automatically chosen
1571 compiler. Note that nothing is done to ensure flags work with the
1575 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
1577 *) Properly check EVP_VerifyFinal() and similar return values
1579 [Ben Laurie, Bodo Moeller, Google Security Team]
1581 *) Enable TLS extensions by default.
1584 *) Allow the CHIL engine to be loaded, whether the application is
1585 multithreaded or not. (This does not release the developer from the
1586 obligation to set up the dynamic locking callbacks.)
1587 [Sander Temme <sander@temme.net>]
1589 *) Use correct exit code if there is an error in dgst command.
1590 [Steve Henson; problem pointed out by Roland Dirlewanger]
1592 *) Tweak Configure so that you need to say "experimental-jpake" to enable
1593 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
1596 *) Add experimental JPAKE support, including demo authentication in
1597 s_client and s_server.
1600 *) Set the comparison function in v3_addr_canonize().
1601 [Rob Austein <sra@hactrn.net>]
1603 *) Add support for XMPP STARTTLS in s_client.
1604 [Philip Paeps <philip@freebsd.org>]
1606 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
1607 to ensure that even with this option, only ciphersuites in the
1608 server's preference list will be accepted. (Note that the option
1609 applies only when resuming a session, so the earlier behavior was
1610 just about the algorithm choice for symmetric cryptography.)
1613 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
1615 *) Fix NULL pointer dereference if a DTLS server received
1616 ChangeCipherSpec as first record (CVE-2009-1386).
1619 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
1620 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
1623 *) The fix in 0.9.8c that supposedly got rid of unsafe
1624 double-checked locking was incomplete for RSA blinding,
1625 addressing just one layer of what turns out to have been
1626 doubly unsafe triple-checked locking.
1628 So now fix this for real by retiring the MONT_HELPER macro
1629 in crypto/rsa/rsa_eay.c.
1631 [Bodo Moeller; problem pointed out by Marius Schilder]
1633 *) Various precautionary measures:
1635 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
1637 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
1638 (NB: This would require knowledge of the secret session ticket key
1639 to exploit, in which case you'd be SOL either way.)
1641 - Change bn_nist.c so that it will properly handle input BIGNUMs
1642 outside the expected range.
1644 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
1647 [Neel Mehta, Bodo Moeller]
1649 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
1650 the load fails. Useful for distros.
1651 [Ben Laurie and the FreeBSD team]
1653 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
1656 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
1659 *) Expand ENGINE to support engine supplied SSL client certificate functions.
1661 This work was sponsored by Logica.
1664 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
1665 keystores. Support for SSL/TLS client authentication too.
1666 Not compiled unless enable-capieng specified to Configure.
1668 This work was sponsored by Logica.
1671 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
1672 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
1673 attribute creation routines such as certifcate requests and PKCS#12
1677 Changes between 0.9.8g and 0.9.8h [28 May 2008]
1679 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
1680 handshake which could lead to a cilent crash as found using the
1681 Codenomicon TLS test suite (CVE-2008-1672)
1682 [Steve Henson, Mark Cox]
1684 *) Fix double free in TLS server name extensions which could lead to
1685 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
1688 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
1690 Clear the error queue to ensure that error entries left from
1691 older function calls do not interfere with the correct operation.
1692 [Lutz Jaenicke, Erik de Castro Lopo]
1694 *) Remove root CA certificates of commercial CAs:
1696 The OpenSSL project does not recommend any specific CA and does not
1697 have any policy with respect to including or excluding any CA.
1698 Therefore it does not make any sense to ship an arbitrary selection
1699 of root CA certificates with the OpenSSL software.
1702 *) RSA OAEP patches to fix two separate invalid memory reads.
1703 The first one involves inputs when 'lzero' is greater than
1704 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
1705 before the beginning of from). The second one involves inputs where
1706 the 'db' section contains nothing but zeroes (there is a one-byte
1707 invalid read after the end of 'db').
1708 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1710 *) Partial backport from 0.9.9-dev:
1712 Introduce bn_mul_mont (dedicated Montgomery multiplication
1713 procedure) as a candidate for BIGNUM assembler implementation.
1714 While 0.9.9-dev uses assembler for various architectures, only
1715 x86_64 is available by default here in the 0.9.8 branch, and
1716 32-bit x86 is available through a compile-time setting.
1718 To try the 32-bit x86 assembler implementation, use Configure
1719 option "enable-montasm" (which exists only for this backport).
1721 As "enable-montasm" for 32-bit x86 disclaims code stability
1722 anyway, in this constellation we activate additional code
1723 backported from 0.9.9-dev for further performance improvements,
1724 namely BN_from_montgomery_word. (To enable this otherwise,
1725 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
1727 [Andy Polyakov (backport partially by Bodo Moeller)]
1729 *) Add TLS session ticket callback. This allows an application to set
1730 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
1731 values. This is useful for key rollover for example where several key
1732 sets may exist with different names.
1735 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
1736 This was broken until now in 0.9.8 releases, such that the only way
1737 a registered ENGINE could be used (assuming it initialises
1738 successfully on the host) was to explicitly set it as the default
1739 for the relevant algorithms. This is in contradiction with 0.9.7
1740 behaviour and the documentation. With this fix, when an ENGINE is
1741 registered into a given algorithm's table of implementations, the
1742 'uptodate' flag is reset so that auto-discovery will be used next
1743 time a new context for that algorithm attempts to select an
1745 [Ian Lister (tweaked by Geoff Thorpe)]
1747 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
1748 implemention in the following ways:
1750 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
1753 Lack of BER streaming support means one pass streaming processing is
1754 only supported if data is detached: setting the streaming flag is
1755 ignored for embedded content.
1757 CMS support is disabled by default and must be explicitly enabled
1758 with the enable-cms configuration option.
1761 *) Update the GMP engine glue to do direct copies between BIGNUM and
1762 mpz_t when openssl and GMP use the same limb size. Otherwise the
1763 existing "conversion via a text string export" trick is still used.
1764 [Paul Sheer <paulsheer@gmail.com>]
1766 *) Zlib compression BIO. This is a filter BIO which compressed and
1767 uncompresses any data passed through it.
1770 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
1771 RFC3394 compatible AES key wrapping.
1774 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
1775 sets string data without copying. X509_ALGOR_set0() and
1776 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
1777 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
1778 from an X509_ATTRIBUTE structure optionally checking it occurs only
1779 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
1783 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
1784 to get the expected BN_FLG_CONSTTIME behavior.
1785 [Bodo Moeller (Google)]
1789 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
1790 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
1791 - added some more tests to do_tests.pl
1792 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
1793 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
1794 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
1795 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
1796 - various changes to netware.pl to enable gcc-cross builds on Win32
1798 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
1799 - various changes to fix missing prototype warnings
1800 - fixed x86nasm.pl to create correct asm files for NASM COFF output
1801 - added AES, WHIRLPOOL and CPUID assembler code to build files
1802 - added missing AES assembler make rules to mk1mf.pl
1803 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
1804 [Guenter Knauf <eflash@gmx.net>]
1806 *) Implement certificate status request TLS extension defined in RFC3546.
1807 A client can set the appropriate parameters and receive the encoded
1808 OCSP response via a callback. A server can query the supplied parameters
1809 and set the encoded OCSP response in the callback. Add simplified examples
1810 to s_client and s_server.
1813 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
1815 *) Fix various bugs:
1816 + Binary incompatibility of ssl_ctx_st structure
1817 + DTLS interoperation with non-compliant servers
1818 + Don't call get_session_cb() without proposed session
1819 + Fix ia64 assembler code
1820 [Andy Polyakov, Steve Henson]
1822 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
1824 *) DTLS Handshake overhaul. There were longstanding issues with
1825 OpenSSL DTLS implementation, which were making it impossible for
1826 RFC 4347 compliant client to communicate with OpenSSL server.
1827 Unfortunately just fixing these incompatibilities would "cut off"
1828 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
1829 server keeps tolerating non RFC compliant syntax. The opposite is
1830 not true, 0.9.8f client can not communicate with earlier server.
1831 This update even addresses CVE-2007-4995.
1834 *) Changes to avoid need for function casts in OpenSSL: some compilers
1835 (gcc 4.2 and later) reject their use.
1836 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
1839 *) Add RFC4507 support to OpenSSL. This includes the corrections in
1840 RFC4507bis. The encrypted ticket format is an encrypted encoded
1841 SSL_SESSION structure, that way new session features are automatically
1844 If a client application caches session in an SSL_SESSION structure
1845 support is transparent because tickets are now stored in the encoded
1848 The SSL_CTX structure automatically generates keys for ticket
1849 protection in servers so again support should be possible
1850 with no application modification.
1852 If a client or server wishes to disable RFC4507 support then the option
1853 SSL_OP_NO_TICKET can be set.
1855 Add a TLS extension debugging callback to allow the contents of any client
1856 or server extensions to be examined.
1858 This work was sponsored by Google.
1861 *) Add initial support for TLS extensions, specifically for the server_name
1862 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1863 have new members for a host name. The SSL data structure has an
1864 additional member SSL_CTX *initial_ctx so that new sessions can be
1865 stored in that context to allow for session resumption, even after the
1866 SSL has been switched to a new SSL_CTX in reaction to a client's
1867 server_name extension.
1869 New functions (subject to change):
1871 SSL_get_servername()
1872 SSL_get_servername_type()
1875 New CTRL codes and macros (subject to change):
1877 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1878 - SSL_CTX_set_tlsext_servername_callback()
1879 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1880 - SSL_CTX_set_tlsext_servername_arg()
1881 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1883 openssl s_client has a new '-servername ...' option.
1885 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1886 '-key2 ...', '-servername_fatal' (subject to change). This allows
1887 testing the HostName extension for a specific single host name ('-cert'
1888 and '-key' remain fallbacks for handshakes without HostName
1889 negotiation). If the unrecogninzed_name alert has to be sent, this by
1890 default is a warning; it becomes fatal with the '-servername_fatal'
1893 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
1895 *) Add AES and SSE2 assembly language support to VC++ build.
1898 *) Mitigate attack on final subtraction in Montgomery reduction.
1901 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
1902 (which previously caused an internal error).
1905 *) Squeeze another 10% out of IGE mode when in != out.
1908 *) AES IGE mode speedup.
1909 [Dean Gaudet (Google)]
1911 *) Add the Korean symmetric 128-bit cipher SEED (see
1912 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
1913 add SEED ciphersuites from RFC 4162:
1915 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
1916 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
1917 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
1918 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
1920 To minimize changes between patchlevels in the OpenSSL 0.9.8
1921 series, SEED remains excluded from compilation unless OpenSSL
1922 is configured with 'enable-seed'.
1923 [KISA, Bodo Moeller]
1925 *) Mitigate branch prediction attacks, which can be practical if a
1926 single processor is shared, allowing a spy process to extract
1927 information. For detailed background information, see
1928 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
1929 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
1930 and Necessary Software Countermeasures"). The core of the change
1931 are new versions BN_div_no_branch() and
1932 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
1933 respectively, which are slower, but avoid the security-relevant
1934 conditional branches. These are automatically called by BN_div()
1935 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
1936 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
1937 remove a conditional branch.
1939 BN_FLG_CONSTTIME is the new name for the previous
1940 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
1941 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
1942 in the exponent causes BN_mod_exp_mont() to use the alternative
1943 implementation in BN_mod_exp_mont_consttime().) The old name
1944 remains as a deprecated alias.
1946 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
1947 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
1948 constant-time implementations for more than just exponentiation.
1949 Here too the old name is kept as a deprecated alias.
1951 BN_BLINDING_new() will now use BN_dup() for the modulus so that
1952 the BN_BLINDING structure gets an independent copy of the
1953 modulus. This means that the previous "BIGNUM *m" argument to
1954 BN_BLINDING_new() and to BN_BLINDING_create_param() now
1955 essentially becomes "const BIGNUM *m", although we can't actually
1956 change this in the header file before 0.9.9. It allows
1957 RSA_setup_blinding() to use BN_with_flags() on the modulus to
1958 enable BN_FLG_CONSTTIME.
1960 [Matthew D Wood (Intel Corp)]
1962 *) In the SSL/TLS server implementation, be strict about session ID
1963 context matching (which matters if an application uses a single
1964 external cache for different purposes). Previously,
1965 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
1966 set. This did ensure strict client verification, but meant that,
1967 with applications using a single external cache for quite
1968 different requirements, clients could circumvent ciphersuite
1969 restrictions for a given session ID context by starting a session
1970 in a different context.
1973 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
1974 a ciphersuite string such as "DEFAULT:RSA" cannot enable
1975 authentication-only ciphersuites.
1978 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
1979 not complete and could lead to a possible single byte overflow
1980 (CVE-2007-5135) [Ben Laurie]
1982 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
1984 *) Since AES128 and AES256 (and similarly Camellia128 and
1985 Camellia256) share a single mask bit in the logic of
1986 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
1987 kludge to work properly if AES128 is available and AES256 isn't
1988 (or if Camellia128 is available and Camellia256 isn't).
1991 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
1992 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
1993 When a point or a seed is encoded in a BIT STRING, we need to
1994 prevent the removal of trailing zero bits to get the proper DER
1995 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
1996 of a NamedBitList, for which trailing 0 bits need to be removed.)
1999 *) Have SSL/TLS server implementation tolerate "mismatched" record
2000 protocol version while receiving ClientHello even if the
2001 ClientHello is fragmented. (The server can't insist on the
2002 particular protocol version it has chosen before the ServerHello
2003 message has informed the client about his choice.)
2006 *) Add RFC 3779 support.
2007 [Rob Austein for ARIN, Ben Laurie]
2009 *) Load error codes if they are not already present instead of using a
2010 static variable. This allows them to be cleanly unloaded and reloaded.
2011 Improve header file function name parsing.
2014 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
2015 or CAPABILITY handshake as required by RFCs.
2018 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
2020 *) Introduce limits to prevent malicious keys being able to
2021 cause a denial of service. (CVE-2006-2940)
2022 [Steve Henson, Bodo Moeller]
2024 *) Fix ASN.1 parsing of certain invalid structures that can result
2025 in a denial of service. (CVE-2006-2937) [Steve Henson]
2027 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2028 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2030 *) Fix SSL client code which could crash if connecting to a
2031 malicious SSLv2 server. (CVE-2006-4343)
2032 [Tavis Ormandy and Will Drewry, Google Security Team]
2034 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
2035 match only those. Before that, "AES256-SHA" would be interpreted
2036 as a pattern and match "AES128-SHA" too (since AES128-SHA got
2037 the same strength classification in 0.9.7h) as we currently only
2038 have a single AES bit in the ciphersuite description bitmap.
2039 That change, however, also applied to ciphersuite strings such as
2040 "RC4-MD5" that intentionally matched multiple ciphersuites --
2041 namely, SSL 2.0 ciphersuites in addition to the more common ones
2042 from SSL 3.0/TLS 1.0.
2044 So we change the selection algorithm again: Naming an explicit
2045 ciphersuite selects this one ciphersuite, and any other similar
2046 ciphersuite (same bitmap) from *other* protocol versions.
2047 Thus, "RC4-MD5" again will properly select both the SSL 2.0
2048 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
2050 Since SSL 2.0 does not have any ciphersuites for which the
2051 128/256 bit distinction would be relevant, this works for now.
2052 The proper fix will be to use different bits for AES128 and
2053 AES256, which would have avoided the problems from the beginning;
2054 however, bits are scarce, so we can only do this in a new release
2055 (not just a patchlevel) when we can change the SSL_CIPHER
2056 definition to split the single 'unsigned long mask' bitmap into
2057 multiple values to extend the available space.
2061 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
2063 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2064 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2066 *) Add AES IGE and biIGE modes.
2069 *) Change the Unix randomness entropy gathering to use poll() when
2070 possible instead of select(), since the latter has some
2071 undesirable limitations.
2072 [Darryl Miles via Richard Levitte and Bodo Moeller]
2074 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
2075 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
2076 cannot be implicitly activated as part of, e.g., the "AES" alias.
2077 However, please upgrade to OpenSSL 0.9.9[-dev] for
2078 non-experimental use of the ECC ciphersuites to get TLS extension
2079 support, which is required for curve and point format negotiation
2080 to avoid potential handshake problems.
2083 *) Disable rogue ciphersuites:
2085 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2086 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2087 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2089 The latter two were purportedly from
2090 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2093 Also deactivate the remaining ciphersuites from
2094 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2095 unofficial, and the ID has long expired.
2098 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2099 dual-core machines) and other potential thread-safety issues.
2102 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
2103 versions), which is now available for royalty-free use
2104 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
2105 Also, add Camellia TLS ciphersuites from RFC 4132.
2107 To minimize changes between patchlevels in the OpenSSL 0.9.8
2108 series, Camellia remains excluded from compilation unless OpenSSL
2109 is configured with 'enable-camellia'.
2112 *) Disable the padding bug check when compression is in use. The padding
2113 bug check assumes the first packet is of even length, this is not
2114 necessarily true if compresssion is enabled and can result in false
2115 positives causing handshake failure. The actual bug test is ancient
2116 code so it is hoped that implementations will either have fixed it by
2117 now or any which still have the bug do not support compression.
2120 Changes between 0.9.8a and 0.9.8b [04 May 2006]
2122 *) When applying a cipher rule check to see if string match is an explicit
2123 cipher suite and only match that one cipher suite if it is.
2126 *) Link in manifests for VC++ if needed.
2127 [Austin Ziegler <halostatue@gmail.com>]
2129 *) Update support for ECC-based TLS ciphersuites according to
2130 draft-ietf-tls-ecc-12.txt with proposed changes (but without
2131 TLS extensions, which are supported starting with the 0.9.9
2132 branch, not in the OpenSSL 0.9.8 branch).
2135 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
2136 opaque EVP_CIPHER_CTX handling.
2139 *) Fixes and enhancements to zlib compression code. We now only use
2140 "zlib1.dll" and use the default __cdecl calling convention on Win32
2141 to conform with the standards mentioned here:
2142 http://www.zlib.net/DLL_FAQ.txt
2143 Static zlib linking now works on Windows and the new --with-zlib-include
2144 --with-zlib-lib options to Configure can be used to supply the location
2145 of the headers and library. Gracefully handle case where zlib library
2149 *) Several fixes and enhancements to the OID generation code. The old code
2150 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
2151 handle numbers larger than ULONG_MAX, truncated printing and had a
2152 non standard OBJ_obj2txt() behaviour.
2155 *) Add support for building of engines under engine/ as shared libraries
2156 under VC++ build system.
2159 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
2160 Hopefully, we will not see any false combination of paths any more.
2163 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
2165 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2166 (part of SSL_OP_ALL). This option used to disable the
2167 countermeasure against man-in-the-middle protocol-version
2168 rollback in the SSL 2.0 server implementation, which is a bad
2169 idea. (CVE-2005-2969)
2171 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2172 for Information Security, National Institute of Advanced Industrial
2173 Science and Technology [AIST], Japan)]
2175 *) Add two function to clear and return the verify parameter flags.
2178 *) Keep cipherlists sorted in the source instead of sorting them at
2179 runtime, thus removing the need for a lock.
2182 *) Avoid some small subgroup attacks in Diffie-Hellman.
2183 [Nick Mathewson and Ben Laurie]
2185 *) Add functions for well-known primes.
2188 *) Extended Windows CE support.
2189 [Satoshi Nakamura and Andy Polyakov]
2191 *) Initialize SSL_METHOD structures at compile time instead of during
2192 runtime, thus removing the need for a lock.
2195 *) Make PKCS7_decrypt() work even if no certificate is supplied by
2196 attempting to decrypt each encrypted key in turn. Add support to
2200 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
2202 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
2205 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
2208 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
2209 key into the same file any more.
2212 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
2215 *) Add -utf8 command line and config file option to 'ca'.
2216 [Stefan <stf@udoma.org]
2218 *) Removed the macro des_crypt(), as it seems to conflict with some
2219 libraries. Use DES_crypt().
2222 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
2223 involves renaming the source and generated shared-libs for
2224 both. The engines will accept the corrected or legacy ids
2225 ('ncipher' and '4758_cca' respectively) when binding. NB,
2226 this only applies when building 'shared'.
2227 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
2229 *) Add attribute functions to EVP_PKEY structure. Modify
2230 PKCS12_create() to recognize a CSP name attribute and
2231 use it. Make -CSP option work again in pkcs12 utility.
2234 *) Add new functionality to the bn blinding code:
2235 - automatic re-creation of the BN_BLINDING parameters after
2236 a fixed number of uses (currently 32)
2237 - add new function for parameter creation
2238 - introduce flags to control the update behaviour of the
2239 BN_BLINDING parameters
2240 - hide BN_BLINDING structure
2241 Add a second BN_BLINDING slot to the RSA structure to improve
2242 performance when a single RSA object is shared among several
2246 *) Add support for DTLS.
2247 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
2249 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
2250 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
2253 *) Remove buggy and incompletet DH cert support from
2254 ssl/ssl_rsa.c and ssl/s3_both.c
2257 *) Use SHA-1 instead of MD5 as the default digest algorithm for
2258 the apps/openssl applications.
2261 *) Compile clean with "-Wall -Wmissing-prototypes
2262 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
2263 DEBUG_SAFESTACK must also be set.
2266 *) Change ./Configure so that certain algorithms can be disabled by default.
2267 The new counterpiece to "no-xxx" is "enable-xxx".
2269 The patented RC5 and MDC2 algorithms will now be disabled unless
2270 "enable-rc5" and "enable-mdc2", respectively, are specified.
2272 (IDEA remains enabled despite being patented. This is because IDEA
2273 is frequently required for interoperability, and there is no license
2274 fee for non-commercial use. As before, "no-idea" can be used to
2275 avoid this algorithm.)
2279 *) Add processing of proxy certificates (see RFC 3820). This work was
2280 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
2281 EGEE (Enabling Grids for E-science in Europe).
2284 *) RC4 performance overhaul on modern architectures/implementations, such
2285 as Intel P4, IA-64 and AMD64.
2288 *) New utility extract-section.pl. This can be used specify an alternative
2289 section number in a pod file instead of having to treat each file as
2290 a separate case in Makefile. This can be done by adding two lines to the
2293 =for comment openssl_section:XXX
2295 The blank line is mandatory.
2299 *) New arguments -certform, -keyform and -pass for s_client and s_server
2300 to allow alternative format key and certificate files and passphrase
2304 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
2305 update associated structures and add various utility functions.
2307 Add new policy related verify parameters, include policy checking in
2308 standard verify code. Enhance 'smime' application with extra parameters
2309 to support policy checking and print out.
2312 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
2313 Nehemiah processors. These extensions support AES encryption in hardware
2314 as well as RNG (though RNG support is currently disabled).
2315 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
2317 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
2320 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
2321 [Andy Polyakov and a number of other people]
2323 *) Improved PowerPC platform support. Most notably BIGNUM assembler
2324 implementation contributed by IBM.
2325 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
2327 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
2328 exponent rather than 'unsigned long'. There is a corresponding change to
2329 the new 'rsa_keygen' element of the RSA_METHOD structure.
2330 [Jelte Jansen, Geoff Thorpe]
2332 *) Functionality for creating the initial serial number file is now
2333 moved from CA.pl to the 'ca' utility with a new option -create_serial.
2335 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
2336 number file to 1, which is bound to cause problems. To avoid
2337 the problems while respecting compatibility between different 0.9.7
2338 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
2339 CA.pl for serial number initialization. With the new release 0.9.8,
2340 we can fix the problem directly in the 'ca' utility.)
2343 *) Reduced header interdepencies by declaring more opaque objects in
2344 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
2345 give fewer recursive includes, which could break lazy source code - so
2346 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
2347 developers should define this symbol when building and using openssl to
2348 ensure they track the recommended behaviour, interfaces, [etc], but
2349 backwards-compatible behaviour prevails when this isn't defined.
2352 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
2355 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
2356 This will generate a random key of the appropriate length based on the
2357 cipher context. The EVP_CIPHER can provide its own random key generation
2358 routine to support keys of a specific form. This is used in the des and
2359 3des routines to generate a key of the correct parity. Update S/MIME
2360 code to use new functions and hence generate correct parity DES keys.
2361 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
2362 valid (weak or incorrect parity).
2365 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
2366 as looking them up. This is useful when the verified structure may contain
2367 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
2368 present unless the new PKCS7_NO_CRL flag is asserted.
2371 *) Extend ASN1 oid configuration module. It now additionally accepts the
2374 shortName = some long name, 1.2.3.4
2377 *) Reimplemented the BN_CTX implementation. There is now no more static
2378 limitation on the number of variables it can handle nor the depth of the
2379 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
2380 information can now expand as required, and rather than having a single
2381 static array of bignums, BN_CTX now uses a linked-list of such arrays
2382 allowing it to expand on demand whilst maintaining the usefulness of
2383 BN_CTX's "bundling".
2386 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
2387 to allow all RSA operations to function using a single BN_CTX.
2390 *) Preliminary support for certificate policy evaluation and checking. This
2391 is initially intended to pass the tests outlined in "Conformance Testing
2392 of Relying Party Client Certificate Path Processing Logic" v1.07.
2395 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
2396 remained unused and not that useful. A variety of other little bignum
2397 tweaks and fixes have also been made continuing on from the audit (see
2401 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
2402 associated ASN1, EVP and SSL functions and old ASN1 macros.
2405 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
2406 and this should never fail. So the return value from the use of
2407 BN_set_word() (which can fail due to needless expansion) is now deprecated;
2408 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
2411 *) BN_CTX_get() should return zero-valued bignums, providing the same
2412 initialised value as BN_new().
2413 [Geoff Thorpe, suggested by Ulf Möller]
2415 *) Support for inhibitAnyPolicy certificate extension.
2418 *) An audit of the BIGNUM code is underway, for which debugging code is
2419 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
2420 is considered valid when processing BIGNUMs, and causes execution to
2421 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
2422 further steps are taken to deliberately pollute unused data in BIGNUM
2423 structures to try and expose faulty code further on. For now, openssl will
2424 (in its default mode of operation) continue to tolerate the inconsistent
2425 forms that it has tolerated in the past, but authors and packagers should
2426 consider trying openssl and their own applications when compiled with
2427 these debugging symbols defined. It will help highlight potential bugs in
2428 their own code, and will improve the test coverage for OpenSSL itself. At
2429 some point, these tighter rules will become openssl's default to improve
2430 maintainability, though the assert()s and other overheads will remain only
2431 in debugging configurations. See bn.h for more details.
2432 [Geoff Thorpe, Nils Larsch, Ulf Möller]
2434 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
2435 that can only be obtained through BN_CTX_new() (which implicitly
2436 initialises it). The presence of this function only made it possible
2437 to overwrite an existing structure (and cause memory leaks).
2440 *) Because of the callback-based approach for implementing LHASH as a
2441 template type, lh_insert() adds opaque objects to hash-tables and
2442 lh_doall() or lh_doall_arg() are typically used with a destructor callback
2443 to clean up those corresponding objects before destroying the hash table
2444 (and losing the object pointers). So some over-zealous constifications in
2445 LHASH have been relaxed so that lh_insert() does not take (nor store) the
2446 objects as "const" and the lh_doall[_arg] callback wrappers are not
2447 prototyped to have "const" restrictions on the object pointers they are
2448 given (and so aren't required to cast them away any more).
2451 *) The tmdiff.h API was so ugly and minimal that our own timing utility
2452 (speed) prefers to use its own implementation. The two implementations
2453 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
2454 its object type properly exposed (MS_TM) instead of casting to/from "char
2455 *". This may still change yet if someone realises MS_TM and "ms_time_***"
2456 aren't necessarily the greatest nomenclatures - but this is what was used
2457 internally to the implementation so I've used that for now.
2460 *) Ensure that deprecated functions do not get compiled when
2461 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
2462 the self-tests were still using deprecated key-generation functions so
2463 these have been updated also.
2466 *) Reorganise PKCS#7 code to separate the digest location functionality
2467 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
2468 New function PKCS7_set_digest() to set the digest type for PKCS#7
2469 digestedData type. Add additional code to correctly generate the
2470 digestedData type and add support for this type in PKCS7 initialization
2474 *) New function PKCS7_set0_type_other() this initializes a PKCS7
2475 structure of type "other".
2478 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
2479 sure the loop does correctly stop and breaking ("division by zero")
2480 modulus operations are not performed. The (pre-generated) prime
2481 table crypto/bn/bn_prime.h was already correct, but it could not be
2482 re-generated on some platforms because of the "division by zero"
2483 situation in the script.
2484 [Ralf S. Engelschall]
2486 *) Update support for ECC-based TLS ciphersuites according to
2487 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
2488 SHA-1 now is only used for "small" curves (where the
2489 representation of a field element takes up to 24 bytes); for
2490 larger curves, the field element resulting from ECDH is directly
2491 used as premaster secret.
2492 [Douglas Stebila (Sun Microsystems Laboratories)]
2494 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
2495 curve secp160r1 to the tests.
2496 [Douglas Stebila (Sun Microsystems Laboratories)]
2498 *) Add the possibility to load symbols globally with DSO.
2499 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
2501 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
2502 control of the error stack.
2505 *) Add support for STORE in ENGINE.
2508 *) Add the STORE type. The intention is to provide a common interface
2509 to certificate and key stores, be they simple file-based stores, or
2510 HSM-type store, or LDAP stores, or...
2511 NOTE: The code is currently UNTESTED and isn't really used anywhere.
2514 *) Add a generic structure called OPENSSL_ITEM. This can be used to
2515 pass a list of arguments to any function as well as provide a way
2516 for a function to pass data back to the caller.
2519 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
2520 works like BUF_strdup() but can be used to duplicate a portion of
2521 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
2525 *) Add the function sk_find_ex() which works like sk_find(), but will
2526 return an index to an element even if an exact match couldn't be
2527 found. The index is guaranteed to point at the element where the
2528 searched-for key would be inserted to preserve sorting order.
2531 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
2532 takes an extra flags argument for optional functionality. Currently,
2533 the following flags are defined:
2535 OBJ_BSEARCH_VALUE_ON_NOMATCH
2536 This one gets OBJ_bsearch_ex() to return a pointer to the first
2537 element where the comparing function returns a negative or zero
2540 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
2541 This one gets OBJ_bsearch_ex() to return a pointer to the first
2542 element where the comparing function returns zero. This is useful
2543 if there are more than one element where the comparing function
2547 *) Make it possible to create self-signed certificates with 'openssl ca'
2548 in such a way that the self-signed certificate becomes part of the
2549 CA database and uses the same mechanisms for serial number generation
2550 as all other certificate signing. The new flag '-selfsign' enables
2551 this functionality. Adapt CA.sh and CA.pl.in.
2554 *) Add functionality to check the public key of a certificate request
2555 against a given private. This is useful to check that a certificate
2556 request can be signed by that key (self-signing).
2559 *) Make it possible to have multiple active certificates with the same
2560 subject in the CA index file. This is done only if the keyword
2561 'unique_subject' is set to 'no' in the main CA section (default
2562 if 'CA_default') of the configuration file. The value is saved
2563 with the database itself in a separate index attribute file,
2564 named like the index file with '.attr' appended to the name.
2567 *) Generate muti valued AVAs using '+' notation in config files for
2571 *) Support for nameConstraints certificate extension.
2574 *) Support for policyConstraints certificate extension.
2577 *) Support for policyMappings certificate extension.
2580 *) Make sure the default DSA_METHOD implementation only uses its
2581 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
2582 and change its own handlers to be NULL so as to remove unnecessary
2583 indirection. This lets alternative implementations fallback to the
2584 default implementation more easily.
2587 *) Support for directoryName in GeneralName related extensions
2591 *) Make it possible to link applications using Makefile.shared.
2592 Make that possible even when linking against static libraries!
2595 *) Support for single pass processing for S/MIME signing. This now
2596 means that S/MIME signing can be done from a pipe, in addition
2597 cleartext signing (multipart/signed type) is effectively streaming
2598 and the signed data does not need to be all held in memory.
2600 This is done with a new flag PKCS7_STREAM. When this flag is set
2601 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
2602 is done after the data is output (and digests calculated) in
2603 SMIME_write_PKCS7().
2606 *) Add full support for -rpath/-R, both in shared libraries and
2607 applications, at least on the platforms where it's known how
2611 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
2612 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
2613 will now compute a table of multiples of the generator that
2614 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
2615 faster (notably in the case of a single point multiplication,
2616 scalar * generator).
2617 [Nils Larsch, Bodo Moeller]
2619 *) IPv6 support for certificate extensions. The various extensions
2620 which use the IP:a.b.c.d can now take IPv6 addresses using the
2621 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
2625 *) Added an ENGINE that implements RSA by performing private key
2626 exponentiations with the GMP library. The conversions to and from
2627 GMP's mpz_t format aren't optimised nor are any montgomery forms
2628 cached, and on x86 it appears OpenSSL's own performance has caught up.
2629 However there are likely to be other architectures where GMP could
2630 provide a boost. This ENGINE is not built in by default, but it can be
2631 specified at Configure time and should be accompanied by the necessary
2632 linker additions, eg;
2633 ./config -DOPENSSL_USE_GMP -lgmp
2636 *) "openssl engine" will not display ENGINE/DSO load failure errors when
2637 testing availability of engines with "-t" - the old behaviour is
2638 produced by increasing the feature's verbosity with "-tt".
2641 *) ECDSA routines: under certain error conditions uninitialized BN objects
2642 could be freed. Solution: make sure initialization is performed early
2643 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
2647 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
2648 and DH_METHOD (eg. by ENGINE implementations) to override the normal
2649 software implementations. For DSA and DH, parameter generation can
2650 also be overriden by providing the appropriate method callbacks.
2653 *) Change the "progress" mechanism used in key-generation and
2654 primality testing to functions that take a new BN_GENCB pointer in
2655 place of callback/argument pairs. The new API functions have "_ex"
2656 postfixes and the older functions are reimplemented as wrappers for
2657 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
2658 declarations of the old functions to help (graceful) attempts to
2659 migrate to the new functions. Also, the new key-generation API
2660 functions operate on a caller-supplied key-structure and return
2661 success/failure rather than returning a key or NULL - this is to
2662 help make "keygen" another member function of RSA_METHOD etc.
2664 Example for using the new callback interface:
2666 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
2670 BN_GENCB_set(&my_cb, my_callback, my_arg);
2672 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
2673 /* For the meaning of a, b in calls to my_callback(), see the
2674 * documentation of the function that calls the callback.
2675 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
2676 * my_callback should return 1 if it wants BN_is_prime_ex()
2677 * to continue, or 0 to stop.
2682 *) Change the ZLIB compression method to be stateful, and make it
2683 available to TLS with the number defined in
2684 draft-ietf-tls-compression-04.txt.
2687 *) Add the ASN.1 structures and functions for CertificatePair, which
2688 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
2690 CertificatePair ::= SEQUENCE {
2691 forward [0] Certificate OPTIONAL,
2692 reverse [1] Certificate OPTIONAL,
2693 -- at least one of the pair shall be present -- }
2695 Also implement the PEM functions to read and write certificate
2696 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
2698 This needed to be defined, mostly for the sake of the LDAP
2699 attribute crossCertificatePair, but may prove useful elsewhere as
2703 *) Make it possible to inhibit symlinking of shared libraries in
2704 Makefile.shared, for Cygwin's sake.
2707 *) Extend the BIGNUM API by creating a function
2708 void BN_set_negative(BIGNUM *a, int neg);
2709 and a macro that behave like
2710 int BN_is_negative(const BIGNUM *a);
2712 to avoid the need to access 'a->neg' directly in applications.
2715 *) Implement fast modular reduction for pseudo-Mersenne primes
2716 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
2717 EC_GROUP_new_curve_GFp() will now automatically use this
2719 [Nils Larsch <nla@trustcenter.de>]
2721 *) Add new lock type (CRYPTO_LOCK_BN).
2724 *) Change the ENGINE framework to automatically load engines
2725 dynamically from specific directories unless they could be
2726 found to already be built in or loaded. Move all the
2727 current engines except for the cryptodev one to a new
2729 The engines in engines/ are built as shared libraries if
2730 the "shared" options was given to ./Configure or ./config.
2731 Otherwise, they are inserted in libcrypto.a.
2732 /usr/local/ssl/engines is the default directory for dynamic
2733 engines, but that can be overriden at configure time through
2734 the usual use of --prefix and/or --openssldir, and at run
2735 time with the environment variable OPENSSL_ENGINES.
2736 [Geoff Thorpe and Richard Levitte]
2738 *) Add Makefile.shared, a helper makefile to build shared
2739 libraries. Addapt Makefile.org.
2742 *) Add version info to Win32 DLLs.
2743 [Peter 'Luna' Runestig" <peter@runestig.com>]
2745 *) Add new 'medium level' PKCS#12 API. Certificates and keys
2746 can be added using this API to created arbitrary PKCS#12
2747 files while avoiding the low level API.
2749 New options to PKCS12_create(), key or cert can be NULL and
2750 will then be omitted from the output file. The encryption
2751 algorithm NIDs can be set to -1 for no encryption, the mac
2752 iteration count can be set to 0 to omit the mac.
2754 Enhance pkcs12 utility by making the -nokeys and -nocerts
2755 options work when creating a PKCS#12 file. New option -nomac
2756 to omit the mac, NONE can be set for an encryption algorithm.
2757 New code is modified to use the enhanced PKCS12_create()
2758 instead of the low level API.
2761 *) Extend ASN1 encoder to support indefinite length constructed
2762 encoding. This can output sequences tags and octet strings in
2763 this form. Modify pk7_asn1.c to support indefinite length
2764 encoding. This is experimental and needs additional code to
2765 be useful, such as an ASN1 bio and some enhanced streaming
2768 Extend template encode functionality so that tagging is passed
2769 down to the template encoder.
2772 *) Let 'openssl req' fail if an argument to '-newkey' is not
2773 recognized instead of using RSA as a default.
2776 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
2777 As these are not official, they are not included in "ALL";
2778 the "ECCdraft" ciphersuite group alias can be used to select them.
2779 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
2781 *) Add ECDH engine support.
2782 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
2784 *) Add ECDH in new directory crypto/ecdh/.
2785 [Douglas Stebila (Sun Microsystems Laboratories)]
2787 *) Let BN_rand_range() abort with an error after 100 iterations
2788 without success (which indicates a broken PRNG).
2791 *) Change BN_mod_sqrt() so that it verifies that the input value
2792 is really the square of the return value. (Previously,
2793 BN_mod_sqrt would show GIGO behaviour.)
2796 *) Add named elliptic curves over binary fields from X9.62, SECG,
2797 and WAP/WTLS; add OIDs that were still missing.
2799 [Sheueling Chang Shantz and Douglas Stebila
2800 (Sun Microsystems Laboratories)]
2802 *) Extend the EC library for elliptic curves over binary fields
2803 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
2806 EC_GF2m_simple_method
2810 EC_GROUP_new_curve_GF2m
2811 EC_GROUP_set_curve_GF2m
2812 EC_GROUP_get_curve_GF2m
2813 EC_POINT_set_affine_coordinates_GF2m
2814 EC_POINT_get_affine_coordinates_GF2m
2815 EC_POINT_set_compressed_coordinates_GF2m
2817 Point compression for binary fields is disabled by default for
2818 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
2821 As binary polynomials are represented as BIGNUMs, various members
2822 of the EC_GROUP and EC_POINT data structures can be shared
2823 between the implementations for prime fields and binary fields;
2824 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
2825 are essentially identical to their ..._GFp counterparts.
2826 (For simplicity, the '..._GFp' prefix has been dropped from
2827 various internal method names.)
2829 An internal 'field_div' method (similar to 'field_mul' and
2830 'field_sqr') has been added; this is used only for binary fields.
2832 [Sheueling Chang Shantz and Douglas Stebila
2833 (Sun Microsystems Laboratories)]
2835 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
2836 through methods ('mul', 'precompute_mult').
2838 The generic implementations (now internally called 'ec_wNAF_mul'
2839 and 'ec_wNAF_precomputed_mult') remain the default if these
2840 methods are undefined.
2842 [Sheueling Chang Shantz and Douglas Stebila
2843 (Sun Microsystems Laboratories)]
2845 *) New function EC_GROUP_get_degree, which is defined through
2846 EC_METHOD. For curves over prime fields, this returns the bit
2847 length of the modulus.
2849 [Sheueling Chang Shantz and Douglas Stebila
2850 (Sun Microsystems Laboratories)]
2852 *) New functions EC_GROUP_dup, EC_POINT_dup.
2853 (These simply call ..._new and ..._copy).
2855 [Sheueling Chang Shantz and Douglas Stebila
2856 (Sun Microsystems Laboratories)]
2858 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
2859 Polynomials are represented as BIGNUMs (where the sign bit is not
2860 used) in the following functions [macros]:
2863 BN_GF2m_sub [= BN_GF2m_add]
2864 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
2865 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
2866 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
2868 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
2869 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
2870 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
2871 BN_GF2m_cmp [= BN_ucmp]
2873 (Note that only the 'mod' functions are actually for fields GF(2^m).
2874 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
2876 For some functions, an the irreducible polynomial defining a
2877 field can be given as an 'unsigned int[]' with strictly
2878 decreasing elements giving the indices of those bits that are set;
2879 i.e., p[] represents the polynomial
2880 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
2882 p[0] > p[1] > ... > p[k] = 0.
2883 This applies to the following functions:
2888 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
2889 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
2891 BN_GF2m_mod_sqrt_arr
2892 BN_GF2m_mod_solve_quad_arr
2896 Conversion can be performed by the following functions:
2901 bntest.c has additional tests for binary polynomial arithmetic.
2903 Two implementations for BN_GF2m_mod_div() are available.
2904 The default algorithm simply uses BN_GF2m_mod_inv() and
2905 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
2906 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
2907 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
2909 [Sheueling Chang Shantz and Douglas Stebila
2910 (Sun Microsystems Laboratories)]
2912 *) Add new error code 'ERR_R_DISABLED' that can be used when some
2913 functionality is disabled at compile-time.
2914 [Douglas Stebila <douglas.stebila@sun.com>]
2916 *) Change default behaviour of 'openssl asn1parse' so that more
2917 information is visible when viewing, e.g., a certificate:
2919 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
2920 mode the content of non-printable OCTET STRINGs is output in a
2921 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
2922 avoid the appearance of a printable string.
2923 [Nils Larsch <nla@trustcenter.de>]
2925 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
2927 EC_GROUP_set_asn1_flag()
2928 EC_GROUP_get_asn1_flag()
2929 EC_GROUP_set_point_conversion_form()
2930 EC_GROUP_get_point_conversion_form()
2931 These control ASN1 encoding details:
2932 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
2933 has been set to OPENSSL_EC_NAMED_CURVE.
2934 - Points are encoded in uncompressed form by default; options for
2935 asn1_for are as for point2oct, namely
2936 POINT_CONVERSION_COMPRESSED
2937 POINT_CONVERSION_UNCOMPRESSED
2938 POINT_CONVERSION_HYBRID
2940 Also add 'seed' and 'seed_len' members to EC_GROUP with access
2943 EC_GROUP_get0_seed()
2944 EC_GROUP_get_seed_len()
2945 This is used only for ASN1 purposes (so far).
2946 [Nils Larsch <nla@trustcenter.de>]
2948 *) Add 'field_type' member to EC_METHOD, which holds the NID
2949 of the appropriate field type OID. The new function
2950 EC_METHOD_get_field_type() returns this value.
2951 [Nils Larsch <nla@trustcenter.de>]
2956 EC_POINT_point2hex()
2957 EC_POINT_hex2point()
2958 providing useful interfaces to EC_POINT_point2oct() and
2959 EC_POINT_oct2point().
2960 [Nils Larsch <nla@trustcenter.de>]
2962 *) Change internals of the EC library so that the functions
2963 EC_GROUP_set_generator()
2964 EC_GROUP_get_generator()
2965 EC_GROUP_get_order()
2966 EC_GROUP_get_cofactor()
2967 are implemented directly in crypto/ec/ec_lib.c and not dispatched
2968 to methods, which would lead to unnecessary code duplication when
2969 adding different types of curves.
2970 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
2972 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
2973 arithmetic, and such that modified wNAFs are generated
2974 (which avoid length expansion in many cases).
2977 *) Add a function EC_GROUP_check_discriminant() (defined via
2978 EC_METHOD) that verifies that the curve discriminant is non-zero.
2980 Add a function EC_GROUP_check() that makes some sanity tests
2981 on a EC_GROUP, its generator and order. This includes
2982 EC_GROUP_check_discriminant().
2983 [Nils Larsch <nla@trustcenter.de>]
2985 *) Add ECDSA in new directory crypto/ecdsa/.
2987 Add applications 'openssl ecparam' and 'openssl ecdsa'
2988 (these are based on 'openssl dsaparam' and 'openssl dsa').
2990 ECDSA support is also included in various other files across the
2991 library. Most notably,
2992 - 'openssl req' now has a '-newkey ecdsa:file' option;
2993 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
2994 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
2995 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
2996 them suitable for ECDSA where domain parameters must be
2997 extracted before the specific public key;
2998 - ECDSA engine support has been added.
2999 [Nils Larsch <nla@trustcenter.de>]
3001 *) Include some named elliptic curves, and add OIDs from X9.62,
3002 SECG, and WAP/WTLS. Each curve can be obtained from the new
3004 EC_GROUP_new_by_curve_name(),
3005 and the list of available named curves can be obtained with
3006 EC_get_builtin_curves().
3007 Also add a 'curve_name' member to EC_GROUP objects, which can be
3009 EC_GROUP_set_curve_name()
3010 EC_GROUP_get_curve_name()
3011 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
3013 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
3014 was actually never needed) and in BN_mul(). The removal in BN_mul()
3015 required a small change in bn_mul_part_recursive() and the addition
3016 of the functions bn_cmp_part_words(), bn_sub_part_words() and
3017 bn_add_part_words(), which do the same thing as bn_cmp_words(),
3018 bn_sub_words() and bn_add_words() except they take arrays with
3022 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
3024 *) Cleanse PEM buffers before freeing them since they may contain
3026 [Benjamin Bennett <ben@psc.edu>]
3028 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
3029 a ciphersuite string such as "DEFAULT:RSA" cannot enable
3030 authentication-only ciphersuites.
3033 *) Since AES128 and AES256 share a single mask bit in the logic of
3034 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
3035 kludge to work properly if AES128 is available and AES256 isn't.
3038 *) Expand security boundary to match 1.1.1 module.
3041 *) Remove redundant features: hash file source, editing of test vectors
3042 modify fipsld to use external fips_premain.c signature.
3045 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
3046 run algorithm test programs.
3049 *) Make algorithm test programs more tolerant of whitespace.
3052 *) Have SSL/TLS server implementation tolerate "mismatched" record
3053 protocol version while receiving ClientHello even if the
3054 ClientHello is fragmented. (The server can't insist on the
3055 particular protocol version it has chosen before the ServerHello
3056 message has informed the client about his choice.)
3059 *) Load error codes if they are not already present instead of using a
3060 static variable. This allows them to be cleanly unloaded and reloaded.
3063 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
3065 *) Introduce limits to prevent malicious keys being able to
3066 cause a denial of service. (CVE-2006-2940)
3067 [Steve Henson, Bodo Moeller]
3069 *) Fix ASN.1 parsing of certain invalid structures that can result
3070 in a denial of service. (CVE-2006-2937) [Steve Henson]
3072 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
3073 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
3075 *) Fix SSL client code which could crash if connecting to a
3076 malicious SSLv2 server. (CVE-2006-4343)
3077 [Tavis Ormandy and Will Drewry, Google Security Team]
3079 *) Change ciphersuite string processing so that an explicit
3080 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
3081 will no longer include "AES128-SHA"), and any other similar
3082 ciphersuite (same bitmap) from *other* protocol versions (so that
3083 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
3084 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
3085 changes from 0.9.8b and 0.9.8d.
3088 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
3090 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
3091 (CVE-2006-4339) [Ben Laurie and Google Security Team]
3093 *) Change the Unix randomness entropy gathering to use poll() when
3094 possible instead of select(), since the latter has some
3095 undesirable limitations.
3096 [Darryl Miles via Richard Levitte and Bodo Moeller]
3098 *) Disable rogue ciphersuites:
3100 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
3101 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
3102 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
3104 The latter two were purportedly from
3105 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
3108 Also deactive the remaining ciphersuites from
3109 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
3110 unofficial, and the ID has long expired.
3113 *) Fix RSA blinding Heisenbug (problems sometimes occured on
3114 dual-core machines) and other potential thread-safety issues.
3117 Changes between 0.9.7i and 0.9.7j [04 May 2006]
3119 *) Adapt fipsld and the build system to link against the validated FIPS
3120 module in FIPS mode.
3123 *) Fixes for VC++ 2005 build under Windows.
3126 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
3127 from a Windows bash shell such as MSYS. It is autodetected from the
3128 "config" script when run from a VC++ environment. Modify standard VC++
3129 build to use fipscanister.o from the GNU make build.
3132 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
3134 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
3135 The value now differs depending on if you build for FIPS or not.
3136 BEWARE! A program linked with a shared FIPSed libcrypto can't be
3137 safely run with a non-FIPSed libcrypto, as it may crash because of
3138 the difference induced by this change.
3141 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
3143 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
3144 (part of SSL_OP_ALL). This option used to disable the
3145 countermeasure against man-in-the-middle protocol-version
3146 rollback in the SSL 2.0 server implementation, which is a bad
3147 idea. (CVE-2005-2969)
3149 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
3150 for Information Security, National Institute of Advanced Industrial
3151 Science and Technology [AIST], Japan)]
3153 *) Minimal support for X9.31 signatures and PSS padding modes. This is
3154 mainly for FIPS compliance and not fully integrated at this stage.
3157 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
3158 the exponentiation using a fixed-length exponent. (Otherwise,
3159 the information leaked through timing could expose the secret key
3160 after many signatures; cf. Bleichenbacher's attack on DSA with
3164 *) Make a new fixed-window mod_exp implementation the default for
3165 RSA, DSA, and DH private-key operations so that the sequence of
3166 squares and multiplies and the memory access pattern are
3167 independent of the particular secret key. This will mitigate
3168 cache-timing and potential related attacks.
3170 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
3171 and this is automatically used by BN_mod_exp_mont() if the new flag
3172 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
3173 will use this BN flag for private exponents unless the flag
3174 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
3175 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
3177 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
3179 *) Change the client implementation for SSLv23_method() and
3180 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
3181 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
3182 (Previously, the SSL 2.0 backwards compatible Client Hello
3183 message format would be used even with SSL_OP_NO_SSLv2.)
3186 *) Add support for smime-type MIME parameter in S/MIME messages which some
3190 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
3191 a threadsafe manner. Modify rsa code to use new function and add calls
3192 to dsa and dh code (which had race conditions before).
3195 *) Include the fixed error library code in the C error file definitions
3196 instead of fixing them up at runtime. This keeps the error code
3197 structures constant.
3200 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
3202 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
3205 *) Fixes for newer kerberos headers. NB: the casts are needed because
3206 the 'length' field is signed on one version and unsigned on another
3207 with no (?) obvious way to tell the difference, without these VC++
3208 complains. Also the "definition" of FAR (blank) is no longer included
3209 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
3210 some needed definitions.
3213 *) Undo Cygwin change.
3216 *) Added support for proxy certificates according to RFC 3820.
3217 Because they may be a security thread to unaware applications,
3218 they must be explicitely allowed in run-time. See
3219 docs/HOWTO/proxy_certificates.txt for further information.
3222 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
3224 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
3225 server and client random values. Previously
3226 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
3227 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
3229 This change has negligible security impact because:
3231 1. Server and client random values still have 24 bytes of pseudo random
3234 2. Server and client random values are sent in the clear in the initial
3237 3. The master secret is derived using the premaster secret (48 bytes in
3238 size for static RSA ciphersuites) as well as client server and random
3241 The OpenSSL team would like to thank the UK NISCC for bringing this issue
3244 [Stephen Henson, reported by UK NISCC]
3246 *) Use Windows randomness collection on Cygwin.
3249 *) Fix hang in EGD/PRNGD query when communication socket is closed
3250 prematurely by EGD/PRNGD.
3251 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
3253 *) Prompt for pass phrases when appropriate for PKCS12 input format.
3256 *) Back-port of selected performance improvements from development
3257 branch, as well as improved support for PowerPC platforms.
3260 *) Add lots of checks for memory allocation failure, error codes to indicate
3261 failure and freeing up memory if a failure occurs.
3262 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
3264 *) Add new -passin argument to dgst.
3267 *) Perform some character comparisons of different types in X509_NAME_cmp:
3268 this is needed for some certificates that reencode DNs into UTF8Strings
3269 (in violation of RFC3280) and can't or wont issue name rollover
3273 *) Make an explicit check during certificate validation to see that
3274 the CA setting in each certificate on the chain is correct. As a
3275 side effect always do the following basic checks on extensions,
3276 not just when there's an associated purpose to the check:
3278 - if there is an unhandled critical extension (unless the user
3279 has chosen to ignore this fault)
3280 - if the path length has been exceeded (if one is set at all)
3281 - that certain extensions fit the associated purpose (if one has
3285 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
3287 *) Avoid a race condition when CRLs are checked in a multi threaded
3288 environment. This would happen due to the reordering of the revoked
3289 entries during signature checking and serial number lookup. Now the
3290 encoding is cached and the serial number sort performed under a lock.
3291 Add new STACK function sk_is_sorted().
3294 *) Add Delta CRL to the extension code.
3297 *) Various fixes to s3_pkt.c so alerts are sent properly.
3298 [David Holmes <d.holmes@f5.com>]
3300 *) Reduce the chances of duplicate issuer name and serial numbers (in
3301 violation of RFC3280) using the OpenSSL certificate creation utilities.
3302 This is done by creating a random 64 bit value for the initial serial
3303 number when a serial number file is created or when a self signed
3304 certificate is created using 'openssl req -x509'. The initial serial
3305 number file is created using 'openssl x509 -next_serial' in CA.pl
3306 rather than being initialized to 1.
3309 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
3311 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
3312 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
3313 [Joe Orton, Steve Henson]
3315 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
3317 [Joe Orton, Steve Henson]
3319 *) Make it possible to have multiple active certificates with the same
3320 subject in the CA index file. This is done only if the keyword
3321 'unique_subject' is set to 'no' in the main CA section (default
3322 if 'CA_default') of the configuration file. The value is saved
3323 with the database itself in a separate index attribute file,
3324 named like the index file with '.attr' appended to the name.
3327 *) X509 verify fixes. Disable broken certificate workarounds when
3328 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
3329 keyUsage extension present. Don't accept CRLs with unhandled critical
3330 extensions: since verify currently doesn't process CRL extensions this
3331 rejects a CRL with *any* critical extensions. Add new verify error codes
3335 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
3336 A clarification of RFC2560 will require the use of OCTET STRINGs and
3337 some implementations cannot handle the current raw format. Since OpenSSL
3338 copies and compares OCSP nonces as opaque blobs without any attempt at
3339 parsing them this should not create any compatibility issues.
3342 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
3343 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
3344 this HMAC (and other) operations are several times slower than OpenSSL
3348 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
3349 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3351 *) Use the correct content when signing type "other".
3354 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
3356 *) Fix various bugs revealed by running the NISCC test suite:
3358 Stop out of bounds reads in the ASN1 code when presented with
3359 invalid tags (CVE-2003-0543 and CVE-2003-0544).
3361 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
3363 If verify callback ignores invalid public key errors don't try to check
3364 certificate signature with the NULL public key.
3368 *) New -ignore_err option in ocsp application to stop the server
3369 exiting on the first error in a request.
3372 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
3373 if the server requested one: as stated in TLS 1.0 and SSL 3.0
3377 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
3378 extra data after the compression methods not only for TLS 1.0
3379 but also for SSL 3.0 (as required by the specification).
3380 [Bodo Moeller; problem pointed out by Matthias Loepfe]
3382 *) Change X509_certificate_type() to mark the key as exported/exportable
3383 when it's 512 *bits* long, not 512 bytes.
3386 *) Change AES_cbc_encrypt() so it outputs exact multiple of
3387 blocks during encryption.
3390 *) Various fixes to base64 BIO and non blocking I/O. On write
3391 flushes were not handled properly if the BIO retried. On read
3392 data was not being buffered properly and had various logic bugs.
3393 This also affects blocking I/O when the data being decoded is a
3397 *) Various S/MIME bugfixes and compatibility changes:
3398 output correct application/pkcs7 MIME type if
3399 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
3400 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
3401 of files as .eml work). Correctly handle very long lines in MIME
3405 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
3407 *) Countermeasure against the Klima-Pokorny-Rosa extension of
3408 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
3409 a protocol version number mismatch like a decryption error
3410 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
3413 *) Turn on RSA blinding by default in the default implementation
3414 to avoid a timing attack. Applications that don't want it can call
3415 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
3416 They would be ill-advised to do so in most cases.
3417 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
3419 *) Change RSA blinding code so that it works when the PRNG is not
3420 seeded (in this case, the secret RSA exponent is abused as
3421 an unpredictable seed -- if it is not unpredictable, there
3422 is no point in blinding anyway). Make RSA blinding thread-safe
3423 by remembering the creator's thread ID in rsa->blinding and
3424 having all other threads use local one-time blinding factors
3425 (this requires more computation than sharing rsa->blinding, but
3426 avoids excessive locking; and if an RSA object is not shared
3427 between threads, blinding will still be very fast).
3430 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
3431 ENGINE as defaults for all supported algorithms irrespective of
3432 the 'flags' parameter. 'flags' is now honoured, so applications
3433 should make sure they are passing it correctly.
3436 *) Target "mingw" now allows native Windows code to be generated in
3437 the Cygwin environment as well as with the MinGW compiler.
3440 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
3442 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
3443 via timing by performing a MAC computation even if incorrrect
3444 block cipher padding has been found. This is a countermeasure
3445 against active attacks where the attacker has to distinguish
3446 between bad padding and a MAC verification error. (CVE-2003-0078)
3448 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
3449 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
3450 Martin Vuagnoux (EPFL, Ilion)]
3452 *) Make the no-err option work as intended. The intention with no-err
3453 is not to have the whole error stack handling routines removed from
3454 libcrypto, it's only intended to remove all the function name and
3455 reason texts, thereby removing some of the footprint that may not
3456 be interesting if those errors aren't displayed anyway.
3458 NOTE: it's still possible for any application or module to have it's
3459 own set of error texts inserted. The routines are there, just not
3460 used by default when no-err is given.
3463 *) Add support for FreeBSD on IA64.
3464 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
3466 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
3467 Kerberos function mit_des_cbc_cksum(). Before this change,
3468 the value returned by DES_cbc_cksum() was like the one from
3469 mit_des_cbc_cksum(), except the bytes were swapped.
3470 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
3472 *) Allow an application to disable the automatic SSL chain building.
3473 Before this a rather primitive chain build was always performed in
3474 ssl3_output_cert_chain(): an application had no way to send the
3475 correct chain if the automatic operation produced an incorrect result.
3477 Now the chain builder is disabled if either:
3479 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
3481 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
3483 The reasoning behind this is that an application would not want the
3484 auto chain building to take place if extra chain certificates are
3485 present and it might also want a means of sending no additional
3486 certificates (for example the chain has two certificates and the
3490 *) Add the possibility to build without the ENGINE framework.
3491 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3493 *) Under Win32 gmtime() can return NULL: check return value in
3494 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
3497 *) DSA routines: under certain error conditions uninitialized BN objects
3498 could be freed. Solution: make sure initialization is performed early
3499 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
3500 Nils Larsch <nla@trustcenter.de> via PR#459)
3503 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
3504 checked on reconnect on the client side, therefore session resumption
3505 could still fail with a "ssl session id is different" error. This
3506 behaviour is masked when SSL_OP_ALL is used due to
3507 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
3508 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3509 followup to PR #377.
3512 *) IA-32 assembler support enhancements: unified ELF targets, support
3513 for SCO/Caldera platforms, fix for Cygwin shared build.
3516 *) Add support for FreeBSD on sparc64. As a consequence, support for
3517 FreeBSD on non-x86 processors is separate from x86 processors on
3518 the config script, much like the NetBSD support.
3519 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
3521 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
3523 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
3526 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
3527 code (06) was taken as the first octet of the session ID and the last
3528 octet was ignored consequently. As a result SSLv2 client side session
3529 caching could not have worked due to the session ID mismatch between
3531 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3535 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
3536 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
3540 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
3541 seems that in spite of existing for more than a year, many application
3542 author have done nothing to provide the necessary callbacks, which
3543 means that this particular engine will not work properly anywhere.
3544 This is a very unfortunate situation which forces us, in the name
3545 of usability, to give the hw_ncipher.c a static lock, which is part
3547 NOTE: This is for the 0.9.7 series ONLY. This hack will never
3548 appear in 0.9.8 or later. We EXPECT application authors to have
3549 dealt properly with this when 0.9.8 is released (unless we actually
3550 make such changes in the libcrypto locking code that changes will
3551 have to be made anyway).
3554 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
3555 octets have been read, EOF or an error occurs. Without this change
3556 some truncated ASN1 structures will not produce an error.
3559 *) Disable Heimdal support, since it hasn't been fully implemented.
3560 Still give the possibility to force the use of Heimdal, but with
3561 warnings and a request that patches get sent to openssl-dev.
3564 *) Add the VC-CE target, introduce the WINCE sysname, and add
3565 INSTALL.WCE and appropriate conditionals to make it build.
3566 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3568 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
3569 cygssl-x.y.z.dll, where x, y and z are the major, minor and
3570 edit numbers of the version.
3571 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
3573 *) Introduce safe string copy and catenation functions
3574 (BUF_strlcpy() and BUF_strlcat()).
3575 [Ben Laurie (CHATS) and Richard Levitte]
3577 *) Avoid using fixed-size buffers for one-line DNs.
3578 [Ben Laurie (CHATS)]
3580 *) Add BUF_MEM_grow_clean() to avoid information leakage when
3581 resizing buffers containing secrets, and use where appropriate.
3582 [Ben Laurie (CHATS)]
3584 *) Avoid using fixed size buffers for configuration file location.
3585 [Ben Laurie (CHATS)]
3587 *) Avoid filename truncation for various CA files.
3588 [Ben Laurie (CHATS)]
3590 *) Use sizeof in preference to magic numbers.
3591 [Ben Laurie (CHATS)]
3593 *) Avoid filename truncation in cert requests.
3594 [Ben Laurie (CHATS)]
3596 *) Add assertions to check for (supposedly impossible) buffer
3598 [Ben Laurie (CHATS)]
3600 *) Don't cache truncated DNS entries in the local cache (this could
3601 potentially lead to a spoofing attack).
3602 [Ben Laurie (CHATS)]
3604 *) Fix various buffers to be large enough for hex/decimal
3605 representations in a platform independent manner.
3606 [Ben Laurie (CHATS)]
3608 *) Add CRYPTO_realloc_clean() to avoid information leakage when
3609 resizing buffers containing secrets, and use where appropriate.
3610 [Ben Laurie (CHATS)]
3612 *) Add BIO_indent() to avoid much slightly worrying code to do
3614 [Ben Laurie (CHATS)]
3616 *) Convert sprintf()/BIO_puts() to BIO_printf().
3617 [Ben Laurie (CHATS)]
3619 *) buffer_gets() could terminate with the buffer only half
3621 [Ben Laurie (CHATS)]
3623 *) Add assertions to prevent user-supplied crypto functions from
3624 overflowing internal buffers by having large block sizes, etc.
3625 [Ben Laurie (CHATS)]
3627 *) New OPENSSL_assert() macro (similar to assert(), but enabled
3629 [Ben Laurie (CHATS)]
3631 *) Eliminate unused copy of key in RC4.
3632 [Ben Laurie (CHATS)]
3634 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
3635 [Ben Laurie (CHATS)]
3637 *) Fix off-by-one error in EGD path.
3638 [Ben Laurie (CHATS)]
3640 *) If RANDFILE path is too long, ignore instead of truncating.
3641 [Ben Laurie (CHATS)]
3643 *) Eliminate unused and incorrectly sized X.509 structure
3645 [Ben Laurie (CHATS)]
3647 *) Eliminate unused and dangerous function knumber().
3648 [Ben Laurie (CHATS)]
3650 *) Eliminate unused and dangerous structure, KSSL_ERR.
3651 [Ben Laurie (CHATS)]
3653 *) Protect against overlong session ID context length in an encoded
3654 session object. Since these are local, this does not appear to be
3656 [Ben Laurie (CHATS)]
3658 *) Change from security patch (see 0.9.6e below) that did not affect
3659 the 0.9.6 release series:
3661 Remote buffer overflow in SSL3 protocol - an attacker could
3662 supply an oversized master key in Kerberos-enabled versions.
3664 [Ben Laurie (CHATS)]
3666 *) Change the SSL kerb5 codes to match RFC 2712.
3669 *) Make -nameopt work fully for req and add -reqopt switch.
3670 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
3672 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
3673 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
3675 *) Make sure tests can be performed even if the corresponding algorithms
3676 have been removed entirely. This was also the last step to make
3677 OpenSSL compilable with DJGPP under all reasonable conditions.
3678 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
3680 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
3681 to allow version independent disabling of normally unselected ciphers,
3682 which may be activated as a side-effect of selecting a single cipher.
3684 (E.g., cipher list string "RSA" enables ciphersuites that are left
3685 out of "ALL" because they do not provide symmetric encryption.
3686 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
3687 [Lutz Jaenicke, Bodo Moeller]
3689 *) Add appropriate support for separate platform-dependent build
3690 directories. The recommended way to make a platform-dependent
3691 build directory is the following (tested on Linux), maybe with
3694 # Place yourself outside of the OpenSSL source tree. In
3695 # this example, the environment variable OPENSSL_SOURCE
3696 # is assumed to contain the absolute OpenSSL source directory.
3697 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
3698 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
3699 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
3700 mkdir -p `dirname $F`
3701 ln -s $OPENSSL_SOURCE/$F $F
3704 To be absolutely sure not to disturb the source tree, a "make clean"
3705 is a good thing. If it isn't successfull, don't worry about it,
3706 it probably means the source directory is very clean.
3709 *) Make sure any ENGINE control commands make local copies of string
3710 pointers passed to them whenever necessary. Otherwise it is possible
3711 the caller may have overwritten (or deallocated) the original string
3712 data when a later ENGINE operation tries to use the stored values.
3713 [Götz Babin-Ebell <babinebell@trustcenter.de>]
3715 *) Improve diagnostics in file reading and command-line digests.
3716 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
3718 *) Add AES modes CFB and OFB to the object database. Correct an
3719 error in AES-CFB decryption.
3722 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
3723 allows existing EVP_CIPHER_CTX structures to be reused after
3724 calling EVP_*Final(). This behaviour is used by encryption
3725 BIOs and some applications. This has the side effect that
3726 applications must explicitly clean up cipher contexts with
3727 EVP_CIPHER_CTX_cleanup() or they will leak memory.
3730 *) Check the values of dna and dnb in bn_mul_recursive before calling
3731 bn_mul_comba (a non zero value means the a or b arrays do not contain
3732 n2 elements) and fallback to bn_mul_normal if either is not zero.
3735 *) Fix escaping of non-ASCII characters when using the -subj option
3736 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
3739 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
3740 form for "surname", serialNumber has no short form.
3741 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
3742 therefore remove "mail" short name for "internet 7".
3743 The OID for unique identifiers in X509 certificates is
3744 x500UniqueIdentifier, not uniqueIdentifier.
3745 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
3748 *) Add an "init" command to the ENGINE config module and auto initialize
3749 ENGINEs. Without any "init" command the ENGINE will be initialized
3750 after all ctrl commands have been executed on it. If init=1 the
3751 ENGINE is initailized at that point (ctrls before that point are run
3752 on the uninitialized ENGINE and after on the initialized one). If
3753 init=0 then the ENGINE will not be iniatialized at all.
3756 *) Fix the 'app_verify_callback' interface so that the user-defined
3757 argument is actually passed to the callback: In the
3758 SSL_CTX_set_cert_verify_callback() prototype, the callback
3759 declaration has been changed from
3762 int (*cb)(X509_STORE_CTX *,void *);
3763 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
3764 i=s->ctx->app_verify_callback(&ctx)
3765 has been changed into
3766 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
3768 To update applications using SSL_CTX_set_cert_verify_callback(),
3769 a dummy argument can be added to their callback functions.
3770 [D. K. Smetters <smetters@parc.xerox.com>]
3772 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
3773 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
3775 *) Add and OPENSSL_LOAD_CONF define which will cause
3776 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
3777 This allows older applications to transparently support certain
3778 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
3779 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
3780 load the config file and OPENSSL_add_all_algorithms_conf() which will
3781 always load it have also been added.
3784 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
3785 Adjust NIDs and EVP layer.
3786 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3788 *) Config modules support in openssl utility.
3790 Most commands now load modules from the config file,
3791 though in a few (such as version) this isn't done
3792 because it couldn't be used for anything.
3794 In the case of ca and req the config file used is
3795 the same as the utility itself: that is the -config
3796 command line option can be used to specify an
3800 *) Move default behaviour from OPENSSL_config(). If appname is NULL
3801 use "openssl_conf" if filename is NULL use default openssl config file.
3804 *) Add an argument to OPENSSL_config() to allow the use of an alternative
3805 config section name. Add a new flag to tolerate a missing config file
3806 and move code to CONF_modules_load_file().
3809 *) Support for crypto accelerator cards from Accelerated Encryption
3810 Processing, www.aep.ie. (Use engine 'aep')
3811 The support was copied from 0.9.6c [engine] and adapted/corrected
3812 to work with the new engine framework.
3813 [AEP Inc. and Richard Levitte]
3815 *) Support for SureWare crypto accelerator cards from Baltimore
3816 Technologies. (Use engine 'sureware')
3817 The support was copied from 0.9.6c [engine] and adapted
3818 to work with the new engine framework.
3821 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
3822 make the newer ENGINE framework commands for the CHIL engine work.
3823 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
3825 *) Make it possible to produce shared libraries on ReliantUNIX.
3826 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
3828 *) Add the configuration target debug-linux-ppro.
3829 Make 'openssl rsa' use the general key loading routines
3830 implemented in apps.c, and make those routines able to
3831 handle the key format FORMAT_NETSCAPE and the variant
3833 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3835 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
3836 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3838 *) Add -keyform to rsautl, and document -engine.
3839 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
3841 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
3842 BIO_R_NO_SUCH_FILE error code rather than the generic
3843 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
3846 *) Add new functions
3848 ERR_peek_last_error_line
3849 ERR_peek_last_error_line_data.
3850 These are similar to
3853 ERR_peek_error_line_data,
3854 but report on the latest error recorded rather than the first one
3855 still in the error queue.
3856 [Ben Laurie, Bodo Moeller]
3858 *) default_algorithms option in ENGINE config module. This allows things
3860 default_algorithms = ALL
3861 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
3864 *) Prelminary ENGINE config module.
3867 *) New experimental application configuration code.
3870 *) Change the AES code to follow the same name structure as all other
3871 symmetric ciphers, and behave the same way. Move everything to
3872 the directory crypto/aes, thereby obsoleting crypto/rijndael.
3873 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3875 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
3876 [Ben Laurie and Theo de Raadt]
3878 *) Add option to output public keys in req command.
3879 [Massimiliano Pala madwolf@openca.org]
3881 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
3882 (up to about 10% better than before for P-192 and P-224).
3885 *) New functions/macros
3887 SSL_CTX_set_msg_callback(ctx, cb)
3888 SSL_CTX_set_msg_callback_arg(ctx, arg)
3889 SSL_set_msg_callback(ssl, cb)
3890 SSL_set_msg_callback_arg(ssl, arg)
3892 to request calling a callback function
3894 void cb(int write_p, int version, int content_type,
3895 const void *buf, size_t len, SSL *ssl, void *arg)
3897 whenever a protocol message has been completely received
3898 (write_p == 0) or sent (write_p == 1). Here 'version' is the
3899 protocol version according to which the SSL library interprets
3900 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
3901 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
3902 the content type as defined in the SSL 3.0/TLS 1.0 protocol
3903 specification (change_cipher_spec(20), alert(21), handshake(22)).
3904 'buf' and 'len' point to the actual message, 'ssl' to the
3905 SSL object, and 'arg' is the application-defined value set by
3906 SSL[_CTX]_set_msg_callback_arg().
3908 'openssl s_client' and 'openssl s_server' have new '-msg' options
3909 to enable a callback that displays all protocol messages.
3912 *) Change the shared library support so shared libraries are built as
3913 soon as the corresponding static library is finished, and thereby get
3914 openssl and the test programs linked against the shared library.
3915 This still only happens when the keyword "shard" has been given to
3916 the configuration scripts.
3918 NOTE: shared library support is still an experimental thing, and
3919 backward binary compatibility is still not guaranteed.
3920 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
3922 *) Add support for Subject Information Access extension.
3923 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3925 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
3926 additional bytes when new memory had to be allocated, not just
3927 when reusing an existing buffer.
3930 *) New command line and configuration option 'utf8' for the req command.
3931 This allows field values to be specified as UTF8 strings.
3934 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
3935 runs for the former and machine-readable output for the latter.
3938 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
3939 of the e-mail address in the DN (i.e., it will go into a certificate
3940 extension only). The new configuration file option 'email_in_dn = no'
3941 has the same effect.
3942 [Massimiliano Pala madwolf@openca.org]
3944 *) Change all functions with names starting with des_ to be starting
3945 with DES_ instead. Add wrappers that are compatible with libdes,
3946 but are named _ossl_old_des_*. Finally, add macros that map the
3947 des_* symbols to the corresponding _ossl_old_des_* if libdes
3948 compatibility is desired. If OpenSSL 0.9.6c compatibility is
3949 desired, the des_* symbols will be mapped to DES_*, with one
3952 Since we provide two compatibility mappings, the user needs to
3953 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
3954 compatibility is desired. The default (i.e., when that macro
3955 isn't defined) is OpenSSL 0.9.6c compatibility.
3957 There are also macros that enable and disable the support of old
3958 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
3959 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
3960 are defined, the default will apply: to support the old des routines.
3962 In either case, one must include openssl/des.h to get the correct
3963 definitions. Do not try to just include openssl/des_old.h, that
3966 NOTE: This is a major break of an old API into a new one. Software
3967 authors are encouraged to switch to the DES_ style functions. Some
3968 time in the future, des_old.h and the libdes compatibility functions
3969 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
3970 default), and then completely removed.
3973 *) Test for certificates which contain unsupported critical extensions.
3974 If such a certificate is found during a verify operation it is
3975 rejected by default: this behaviour can be overridden by either
3976 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
3977 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
3978 X509_supported_extension() has also been added which returns 1 if a
3979 particular extension is supported.
3982 *) Modify the behaviour of EVP cipher functions in similar way to digests
3983 to retain compatibility with existing code.
3986 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
3987 compatibility with existing code. In particular the 'ctx' parameter does
3988 not have to be to be initialized before the call to EVP_DigestInit() and
3989 it is tidied up after a call to EVP_DigestFinal(). New function
3990 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
3991 EVP_MD_CTX_copy() changed to not require the destination to be
3992 initialized valid and new function EVP_MD_CTX_copy_ex() added which
3993 requires the destination to be valid.
3995 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
3996 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
3999 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
4000 so that complete 'Handshake' protocol structures are kept in memory
4001 instead of overwriting 'msg_type' and 'length' with 'body' data.
4004 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
4005 [Massimo Santin via Richard Levitte]
4007 *) Major restructuring to the underlying ENGINE code. This includes
4008 reduction of linker bloat, separation of pure "ENGINE" manipulation
4009 (initialisation, etc) from functionality dealing with implementations
4010 of specific crypto iterfaces. This change also introduces integrated
4011 support for symmetric ciphers and digest implementations - so ENGINEs
4012 can now accelerate these by providing EVP_CIPHER and EVP_MD
4013 implementations of their own. This is detailed in crypto/engine/README
4014 as it couldn't be adequately described here. However, there are a few
4015 API changes worth noting - some RSA, DSA, DH, and RAND functions that
4016 were changed in the original introduction of ENGINE code have now
4017 reverted back - the hooking from this code to ENGINE is now a good
4018 deal more passive and at run-time, operations deal directly with
4019 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
4020 dereferencing through an ENGINE pointer any more. Also, the ENGINE
4021 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
4022 they were not being used by the framework as there is no concept of a
4023 BIGNUM_METHOD and they could not be generalised to the new
4024 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
4025 ENGINE_cpy() has been removed as it cannot be consistently defined in
4029 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
4032 *) Change mkdef.pl to sort symbols that get the same entry number,
4033 and make sure the automatically generated functions ERR_load_*
4034 become part of libeay.num as well.
4037 *) New function SSL_renegotiate_pending(). This returns true once
4038 renegotiation has been requested (either SSL_renegotiate() call
4039 or HelloRequest/ClientHello receveived from the peer) and becomes
4040 false once a handshake has been completed.
4041 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
4042 sends a HelloRequest, but does not ensure that a handshake takes
4043 place. SSL_renegotiate_pending() is useful for checking if the
4044 client has followed the request.)
4047 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
4048 By default, clients may request session resumption even during
4049 renegotiation (if session ID contexts permit); with this option,
4050 session resumption is possible only in the first handshake.
4052 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
4053 more bits available for options that should not be part of
4054 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
4057 *) Add some demos for certificate and certificate request creation.
4060 *) Make maximum certificate chain size accepted from the peer application
4061 settable (SSL*_get/set_max_cert_list()), as proposed by
4062 "Douglas E. Engert" <deengert@anl.gov>.
4065 *) Add support for shared libraries for Unixware-7
4066 (Boyd Lynn Gerber <gerberb@zenez.com>).
4069 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
4070 be done prior to destruction. Use this to unload error strings from
4071 ENGINEs that load their own error strings. NB: This adds two new API
4072 functions to "get" and "set" this destroy handler in an ENGINE.
4075 *) Alter all existing ENGINE implementations (except "openssl" and
4076 "openbsd") to dynamically instantiate their own error strings. This
4077 makes them more flexible to be built both as statically-linked ENGINEs
4078 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
4079 Also, add stub code to each that makes building them as self-contained
4080 shared-libraries easier (see README.ENGINE).
4083 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
4084 implementations into applications that are completely implemented in
4085 self-contained shared-libraries. The "dynamic" ENGINE exposes control
4086 commands that can be used to configure what shared-library to load and
4087 to control aspects of the way it is handled. Also, made an update to
4088 the README.ENGINE file that brings its information up-to-date and
4089 provides some information and instructions on the "dynamic" ENGINE
4090 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
4093 *) Make it possible to unload ranges of ERR strings with a new
4094 "ERR_unload_strings" function.
4097 *) Add a copy() function to EVP_MD.
4100 *) Make EVP_MD routines take a context pointer instead of just the
4101 md_data void pointer.
4104 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
4105 that the digest can only process a single chunk of data
4106 (typically because it is provided by a piece of
4107 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
4108 is only going to provide a single chunk of data, and hence the
4109 framework needn't accumulate the data for oneshot drivers.
4112 *) As with "ERR", make it possible to replace the underlying "ex_data"
4113 functions. This change also alters the storage and management of global
4114 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
4115 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
4116 index counters. The API functions that use this state have been changed
4117 to take a "class_index" rather than pointers to the class's local STACK
4118 and counter, and there is now an API function to dynamically create new
4119 classes. This centralisation allows us to (a) plug a lot of the
4120 thread-safety problems that existed, and (b) makes it possible to clean
4121 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
4122 such data would previously have always leaked in application code and
4123 workarounds were in place to make the memory debugging turn a blind eye
4124 to it. Application code that doesn't use this new function will still
4125 leak as before, but their memory debugging output will announce it now
4126 rather than letting it slide.
4128 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
4129 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
4130 has a return value to indicate success or failure.
4133 *) Make it possible to replace the underlying "ERR" functions such that the
4134 global state (2 LHASH tables and 2 locks) is only used by the "default"
4135 implementation. This change also adds two functions to "get" and "set"
4136 the implementation prior to it being automatically set the first time
4137 any other ERR function takes place. Ie. an application can call "get",
4138 pass the return value to a module it has just loaded, and that module
4139 can call its own "set" function using that value. This means the
4140 module's "ERR" operations will use (and modify) the error state in the
4141 application and not in its own statically linked copy of OpenSSL code.
4144 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
4145 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
4146 the operation, and provides a more encapsulated way for external code
4147 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
4148 to use these functions rather than manually incrementing the counts.
4150 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
4153 *) Add EVP test program.
4156 *) Add symmetric cipher support to ENGINE. Expect the API to change!
4159 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
4160 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
4161 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
4162 These allow a CRL to be built without having to access X509_CRL fields
4163 directly. Modify 'ca' application to use new functions.
4166 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
4167 bug workarounds. Rollback attack detection is a security feature.
4168 The problem will only arise on OpenSSL servers when TLSv1 is not
4169 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
4170 Software authors not wanting to support TLSv1 will have special reasons
4171 for their choice and can explicitly enable this option.
4172 [Bodo Moeller, Lutz Jaenicke]
4174 *) Rationalise EVP so it can be extended: don't include a union of
4175 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
4176 (similar to those existing for EVP_CIPHER_CTX).
4181 EVP_MD_CTX_init(&md); /* new function call */
4182 EVP_DigestInit(&md, EVP_sha1());
4183 EVP_DigestUpdate(&md, in, len);
4184 EVP_DigestFinal(&md, out, NULL);
4185 EVP_MD_CTX_cleanup(&md); /* new function call */
4189 *) Make DES key schedule conform to the usual scheme, as well as
4190 correcting its structure. This means that calls to DES functions
4191 now have to pass a pointer to a des_key_schedule instead of a
4192 plain des_key_schedule (which was actually always a pointer
4195 des_key_schedule ks;
4197 des_set_key_checked(..., &ks);
4198 des_ncbc_encrypt(..., &ks, ...);
4200 (Note that a later change renames 'des_...' into 'DES_...'.)
4203 *) Initial reduction of linker bloat: the use of some functions, such as
4204 PEM causes large amounts of unused functions to be linked in due to
4205 poor organisation. For example pem_all.c contains every PEM function
4206 which has a knock on effect of linking in large amounts of (unused)
4207 ASN1 code. Grouping together similar functions and splitting unrelated
4208 functions prevents this.
4211 *) Cleanup of EVP macros.
4214 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
4215 correct _ecb suffix.
4218 *) Add initial OCSP responder support to ocsp application. The
4219 revocation information is handled using the text based index
4220 use by the ca application. The responder can either handle
4221 requests generated internally, supplied in files (for example
4222 via a CGI script) or using an internal minimal server.
4225 *) Add configuration choices to get zlib compression for TLS.
4228 *) Changes to Kerberos SSL for RFC 2712 compliance:
4229 1. Implemented real KerberosWrapper, instead of just using
4230 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
4231 2. Implemented optional authenticator field of KerberosWrapper.
4233 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
4234 and authenticator structs; see crypto/krb5/.
4236 Generalized Kerberos calls to support multiple Kerberos libraries.
4237 [Vern Staats <staatsvr@asc.hpc.mil>,
4238 Jeffrey Altman <jaltman@columbia.edu>
4239 via Richard Levitte]
4241 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
4242 already does with RSA. testdsa.h now has 'priv_key/pub_key'
4243 values for each of the key sizes rather than having just
4244 parameters (and 'speed' generating keys each time).
4247 *) Speed up EVP routines.
4250 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
4251 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
4252 des-cbc 4389.55k 5571.17k &n
projects / openssl.git / blob