5 Changes between 1.0.1 and 1.1.0 [xx XXX xxxx]
7 *) Add TLS v1.2 server support for client authentication.
10 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
14 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
15 FIPS modules versions.
18 *) Add TLS v1.2 client side support for client authentication. Keep cache
19 of handshake records longer as we don't know the hash algorithm to use
20 until after the certificate request message is received.
23 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
24 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implmeneted
25 outside the validated module in the FIPS capable OpenSSL.
28 *) Initial TLS v1.2 client support. Add a default signature algorithms
29 extension including all the algorithms we support. Parse new signature
30 format in client key exchange. Relax some ECC signing restrictions for
31 TLS v1.2 as indicated in RFC5246.
34 *) Add server support for TLS v1.2 signature algorithms extension. Switch
35 to new signature format when needed using client digest preference.
36 All server ciphersuites should now work correctly in TLS v1.2. No client
37 support yet and no support for client certificates.
40 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
41 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
42 ciphersuites. At present only RSA key exchange ciphersuites work with
43 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
44 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
48 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
49 with this defined it will not be affected by any changes to ssl internal
50 structures. Add several utility functions to allow openssl application
51 to work with OPENSSL_NO_SSL_INTERN defined.
54 *) Minor change to DRBG entropy callback semantics. In some cases
55 there is no mutiple of the block length between min_len and
56 max_len. Allow the callback to return more than max_len bytes
57 of entropy but discard any extra: it is the callback's responsibility
58 to ensure that the extra data discarded does not impact the
59 requested amount of entropy.
62 *) Add PRNG security strength checks to RSA, DSA and ECDSA using
63 information in FIPS186-3, SP800-57 and SP800-131A.
66 *) CCM support via EVP. Interface is very similar to GCM case except we
67 must supply all data in one chunk (i.e. no update, final) and the
68 message length must be supplied if AAD is used. Add algorithm test
72 *) Initial version of POST overhaul. Add POST callback to allow the status
73 of POST to be monitored and/or failures induced. Modify fips_test_suite
74 to use callback. Always run all selftests even if one fails.
77 *) XTS support including algorithm test driver in the fips_gcmtest program.
78 Note: this does increase the maximum key length from 32 to 64 bytes but
79 there should be no binary compatibility issues as existing applications
80 will never use XTS mode.
83 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
84 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
85 performs algorithm blocking for unapproved PRNG types. Also do not
86 set PRNG type in FIPS_mode_set(): leave this to the application.
87 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
88 the standard OpenSSL PRNG: set additional data to a date time vector.
91 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
92 This shouldn't present any incompatibility problems because applications
93 shouldn't be using these directly and any that are will need to rethink
94 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
97 *) Extensive self tests and health checking required by SP800-90 DRBG.
98 Remove strength parameter from FIPS_drbg_instantiate and always
99 instantiate at maximum supported strength.
103 [Tom Wu <tjw@cs.stanford.edu> and Ben Laurie]
105 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
108 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
111 *) New function DH_compute_key_padded() to compute a DH key and pad with
112 leading zeroes if needed: this complies with SP800-56A et al.
115 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
116 anything, incomplete, subject to change and largely untested at present.
119 *) Modify fipscanisteronly build option to only build the necessary object
120 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
123 *) Add experimental option FIPSSYMS to give all symbols in
124 fipscanister.o and FIPS or fips prefix. This will avoid
125 conflicts with future versions of OpenSSL. Add perl script
126 util/fipsas.pl to preprocess assembly language source files
127 and rename any affected symbols.
130 *) Add selftest checks and algorithm block of non-fips algorithms in
131 FIPS mode. Remove DES2 from selftests.
134 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
135 return internal method without any ENGINE dependencies. Add new
136 tiny fips sign and verify functions.
139 *) New build option no-ec2m to disable characteristic 2 code.
142 *) New build option "fipscanisteronly". This only builds fipscanister.o
143 and (currently) associated fips utilities. Uses the file Makefile.fips
144 instead of Makefile.org as the prototype.
147 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
148 Update fips_gcmtest to use IV generator.
151 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
152 setting output buffer to NULL. The *Final function must be
153 called although it will not retrieve any additional data. The tag
154 can be set or retrieved with a ctrl. The IV length is by default 12
155 bytes (96 bits) but can be set to an alternative value. If the IV
156 length exceeds the maximum IV length (currently 16 bytes) it cannot be
160 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
161 underlying do_cipher function handles all cipher semantics itself
162 including padding and finalisation. This is useful if (for example)
163 an ENGINE cipher handles block padding itself. The behaviour of
164 do_cipher is subtly changed if this flag is set: the return value
165 is the number of characters written to the output buffer (zero is
166 no longer an error code) or a negative error code. Also if the
167 input buffer is NULL and length 0 finalisation should be performed.
170 *) If a candidate issuer certificate is already part of the constructed
171 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
174 *) Improve forward-security support: add functions
176 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
177 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
179 for use by SSL/TLS servers; the callback function will be called whenever a
180 new session is created, and gets to decide whether the session may be
181 cached to make it resumable (return 0) or not (return 1). (As by the
182 SSL/TLS protocol specifications, the session_id sent by the server will be
183 empty to indicate that the session is not resumable; also, the server will
184 not generate RFC 4507 (RFC 5077) session tickets.)
186 A simple reasonable callback implementation is to return is_forward_secure.
187 This parameter will be set to 1 or 0 depending on the ciphersuite selected
188 by the SSL/TLS server library, indicating whether it can provide forward
190 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
192 *) Add Next Protocol Negotiation,
193 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
194 disabled with a no-npn flag to config or Configure. Code donated
196 [Adam Langley <agl@google.com> and Ben Laurie]
198 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
199 all platforms. Move ssize_t definition from e_os.h to the public
200 header file e_os2.h as it now appears in public header file cms.h
203 *) New function OPENSSL_gmtime_diff to find the difference in days
204 and seconds between two tm structures. This will be used to provide
205 additional functionality for ASN1_TIME.
208 *) New -sigopt option to the ca, req and x509 utilities. Additional
209 signature parameters can be passed using this option and in
213 *) Add RSA PSS signing function. This will generate and set the
214 appropriate AlgorithmIdentifiers for PSS based on those in the
215 corresponding EVP_MD_CTX structure. No application support yet.
218 *) Support for companion algorithm specific ASN1 signing routines.
219 New function ASN1_item_sign_ctx() signs a pre-initialised
220 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
221 the appropriate parameters.
224 *) Add new algorithm specific ASN1 verification initialisation function
225 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
226 handling will be the same no matter what EVP_PKEY_METHOD is used.
227 Add a PSS handler to support verification of PSS signatures: checked
228 against a number of sample certificates.
231 *) Add signature printing for PSS. Add PSS OIDs.
232 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
234 *) Add algorithm specific signature printing. An individual ASN1 method
235 can now print out signatures instead of the standard hex dump.
237 More complex signatures (e.g. PSS) can print out more meaningful
238 information. Include DSA version that prints out the signature
242 *) Add -trusted_first option which attempts to find certificates in the
243 trusted store even if an untrusted chain is also supplied.
246 *) Initial experimental support for explicitly trusted non-root CAs.
247 OpenSSL still tries to build a complete chain to a root but if an
248 intermediate CA has a trust setting included that is used. The first
249 setting is used: whether to trust or reject.
252 *) New -verify_name option in command line utilities to set verification
256 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
257 Add CMAC pkey methods.
260 *) Experiemental regnegotiation in s_server -www mode. If the client
261 browses /reneg connection is renegotiated. If /renegcert it is
262 renegotiated requesting a certificate.
265 *) Add an "external" session cache for debugging purposes to s_server. This
266 should help trace issues which normally are only apparent in deployed
267 multi-process servers.
270 *) Experiemental password based recipient info support for CMS library:
271 implementing RFC3211.
274 *) Split password based encryption into PBES2 and PBKDF2 functions. This
275 neatly separates the code into cipher and PBE sections and is required
276 for some algorithms that split PBES2 into separate pieces (such as
280 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
281 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
282 BIO_set_cipher() and some obscure PEM functions were changed so they
283 can now return an error. The RAND changes required a change to the
284 RAND_METHOD structure.
287 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
288 a gcc attribute to warn if the result of a function is ignored. This
289 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
290 whose return value is often ignored.
293 Changes between 1.0.0d and 1.0.1 [xx XXX xxxx]
295 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
298 *) Add EC_GFp_nistp224_method(), a 64-bit optimized implementation for
299 elliptic curve NIST-P224 with constant-time single point multiplication on
300 typical inputs. EC_GROUP_new_by_curve_name() will automatically use this
301 (while EC_GROUP_new_curve_GFp() currently won't and prefers the more
302 flexible implementations).
304 The implementation requires support for the nonstandard type __uint128_t,
305 and so is disabled by default. To include this in your build of OpenSSL,
306 use -DEC_NISTP224_64_GCC_128 on the Configure (or config) command line,
307 and run "make depend" (or "make update").
308 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
310 *) Permit abbreviated handshakes when renegotiating using the function
311 SSL_renegotiate_abbreviated().
312 [Robin Seggelmann <seggelmann@fh-muenster.de>]
314 *) Add call to ENGINE_register_all_complete() to
315 ENGINE_load_builtin_engines(), so some implementations get used
316 automatically instead of needing explicit application support.
319 *) Add support for TLS key exporter as described in RFC5705.
320 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
322 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
323 a few changes are required:
325 Add SSL_OP_NO_TLSv1_1 flag.
327 Update version checking logic to handle version 1.1.
328 Add explicit IV handling (ported from DTLS code).
329 Add command line options to s_client/s_server.
332 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
334 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
335 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
337 *) Fix bug in string printing code: if *any* escaping is enabled we must
338 escape the escape character (backslash) or the resulting string is
342 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
344 *) Disable code workaround for ancient and obsolete Netscape browsers
345 and servers: an attacker can use it in a ciphersuite downgrade attack.
346 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
349 *) Fixed J-PAKE implementation error, originally discovered by
350 Sebastien Martini, further info and confirmation from Stefan
351 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
354 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
356 *) Fix extension code to avoid race conditions which can result in a buffer
357 overrun vulnerability: resumed sessions must not be modified as they can
358 be shared by multiple threads. CVE-2010-3864
361 *) Fix WIN32 build system to correctly link an ENGINE directory into
365 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
367 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
369 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
371 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
373 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
374 context. The operation can be customised via the ctrl mechanism in
375 case ENGINEs want to include additional functionality.
378 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
381 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
382 output hashes compatible with older versions of OpenSSL.
383 [Willy Weisz <weisz@vcpc.univie.ac.at>]
385 *) Fix compression algorithm handling: if resuming a session use the
386 compression algorithm of the resumed session instead of determining
387 it from client hello again. Don't allow server to change algorithm.
390 *) Add load_crls() function to apps tidying load_certs() too. Add option
391 to verify utility to allow additional CRLs to be included.
394 *) Update OCSP request code to permit adding custom headers to the request:
395 some responders need this.
398 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
400 [Julia Lawall <julia@diku.dk>]
402 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
403 needlessly dereferenced structures, used obsolete functions and
404 didn't handle all updated verify codes correctly.
407 *) Disable MD2 in the default configuration.
410 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
411 indicate the initial BIO being pushed or popped. This makes it possible
412 to determine whether the BIO is the one explicitly called or as a result
413 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
414 it handles reference counts correctly and doesn't zero out the I/O bio
415 when it is not being explicitly popped. WARNING: applications which
416 included workarounds for the old buggy behaviour will need to be modified
417 or they could free up already freed BIOs.
420 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
421 renaming to all platforms (within the 0.9.8 branch, this was
422 done conditionally on Netware platforms to avoid a name clash).
423 [Guenter <lists@gknw.net>]
425 *) Add ECDHE and PSK support to DTLS.
426 [Michael Tuexen <tuexen@fh-muenster.de>]
428 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
432 *) Add "missing" function EVP_MD_flags() (without this the only way to
433 retrieve a digest flags is by accessing the structure directly. Update
434 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
435 or cipher is registered as in the "from" argument. Print out all
436 registered digests in the dgst usage message instead of manually
437 attempting to work them out.
440 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
441 this allows the use of compression and extensions. Change default cipher
442 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
443 by default unless an application cipher string requests it.
446 *) Alter match criteria in PKCS12_parse(). It used to try to use local
447 key ids to find matching certificates and keys but some PKCS#12 files
448 don't follow the (somewhat unwritten) rules and this strategy fails.
449 Now just gather all certificates together and the first private key
450 then look for the first certificate that matches the key.
453 *) Support use of registered digest and cipher names for dgst and cipher
454 commands instead of having to add each one as a special case. So now
461 openssl dgst -sha256 foo
463 and this works for ENGINE based algorithms too.
467 *) Update Gost ENGINE to support parameter files.
468 [Victor B. Wagner <vitus@cryptocom.ru>]
470 *) Support GeneralizedTime in ca utility.
471 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
473 *) Enhance the hash format used for certificate directory links. The new
474 form uses the canonical encoding (meaning equivalent names will work
475 even if they aren't identical) and uses SHA1 instead of MD5. This form
476 is incompatible with the older format and as a result c_rehash should
477 be used to rebuild symbolic links.
480 *) Make PKCS#8 the default write format for private keys, replacing the
481 traditional format. This form is standardised, more secure and doesn't
482 include an implicit MD5 dependency.
485 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
486 committed to OpenSSL should pass this lot as a minimum.
489 *) Add session ticket override functionality for use by EAP-FAST.
490 [Jouni Malinen <j@w1.fi>]
492 *) Modify HMAC functions to return a value. Since these can be implemented
493 in an ENGINE errors can occur.
496 *) Type-checked OBJ_bsearch_ex.
499 *) Type-checked OBJ_bsearch. Also some constification necessitated
500 by type-checking. Still to come: TXT_DB, bsearch(?),
501 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
505 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
506 seconds to a tm structure directly, instead of going through OS
507 specific date routines. This avoids any issues with OS routines such
508 as the year 2038 bug. New *_adj() functions for ASN1 time structures
509 and X509_time_adj_ex() to cover the extended range. The existing
510 X509_time_adj() is still usable and will no longer have any date issues.
513 *) Delta CRL support. New use deltas option which will attempt to locate
514 and search any appropriate delta CRLs available.
516 This work was sponsored by Google.
519 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
520 code and add additional score elements. Validate alternate CRL paths
521 as part of the CRL checking and indicate a new error "CRL path validation
522 error" in this case. Applications wanting additional details can use
523 the verify callback and check the new "parent" field. If this is not
524 NULL CRL path validation is taking place. Existing applications wont
525 see this because it requires extended CRL support which is off by
528 This work was sponsored by Google.
531 *) Support for freshest CRL extension.
533 This work was sponsored by Google.
536 *) Initial indirect CRL support. Currently only supported in the CRLs
537 passed directly and not via lookup. Process certificate issuer
538 CRL entry extension and lookup CRL entries by bother issuer name
539 and serial number. Check and process CRL issuer entry in IDP extension.
541 This work was sponsored by Google.
544 *) Add support for distinct certificate and CRL paths. The CRL issuer
545 certificate is validated separately in this case. Only enabled if
546 an extended CRL support flag is set: this flag will enable additional
547 CRL functionality in future.
549 This work was sponsored by Google.
552 *) Add support for policy mappings extension.
554 This work was sponsored by Google.
557 *) Fixes to pathlength constraint, self issued certificate handling,
558 policy processing to align with RFC3280 and PKITS tests.
560 This work was sponsored by Google.
563 *) Support for name constraints certificate extension. DN, email, DNS
564 and URI types are currently supported.
566 This work was sponsored by Google.
569 *) To cater for systems that provide a pointer-based thread ID rather
570 than numeric, deprecate the current numeric thread ID mechanism and
571 replace it with a structure and associated callback type. This
572 mechanism allows a numeric "hash" to be extracted from a thread ID in
573 either case, and on platforms where pointers are larger than 'long',
574 mixing is done to help ensure the numeric 'hash' is usable even if it
575 can't be guaranteed unique. The default mechanism is to use "&errno"
576 as a pointer-based thread ID to distinguish between threads.
578 Applications that want to provide their own thread IDs should now use
579 CRYPTO_THREADID_set_callback() to register a callback that will call
580 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
582 Note that ERR_remove_state() is now deprecated, because it is tied
583 to the assumption that thread IDs are numeric. ERR_remove_state(0)
584 to free the current thread's error state should be replaced by
585 ERR_remove_thread_state(NULL).
587 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
588 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
589 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
590 application was previously providing a numeric thread callback that
591 was inappropriate for distinguishing threads, then uniqueness might
592 have been obtained with &errno that happened immediately in the
593 intermediate development versions of OpenSSL; this is no longer the
594 case, the numeric thread callback will now override the automatic use
596 [Geoff Thorpe, with help from Bodo Moeller]
598 *) Initial support for different CRL issuing certificates. This covers a
599 simple case where the self issued certificates in the chain exist and
600 the real CRL issuer is higher in the existing chain.
602 This work was sponsored by Google.
605 *) Removed effectively defunct crypto/store from the build.
608 *) Revamp of STACK to provide stronger type-checking. Still to come:
609 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
610 ASN1_STRING, CONF_VALUE.
613 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
614 RAM on SSL connections. This option can save about 34k per idle SSL.
617 *) Revamp of LHASH to provide stronger type-checking. Still to come:
618 STACK, TXT_DB, bsearch, qsort.
621 *) Initial support for Cryptographic Message Syntax (aka CMS) based
622 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
623 support for data, signedData, compressedData, digestedData and
624 encryptedData, envelopedData types included. Scripts to check against
625 RFC4134 examples draft and interop and consistency checks of many
626 content types and variants.
629 *) Add options to enc utility to support use of zlib compression BIO.
632 *) Extend mk1mf to support importing of options and assembly language
633 files from Configure script, currently only included in VC-WIN32.
634 The assembly language rules can now optionally generate the source
635 files from the associated perl scripts.
638 *) Implement remaining functionality needed to support GOST ciphersuites.
639 Interop testing has been performed using CryptoPro implementations.
640 [Victor B. Wagner <vitus@cryptocom.ru>]
642 *) s390x assembler pack.
645 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
649 *) Implement Opaque PRF Input TLS extension as specified in
650 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
651 official specification yet and no extension type assignment by
652 IANA exists, this extension (for now) will have to be explicitly
653 enabled when building OpenSSL by providing the extension number
654 to use. For example, specify an option
656 -DTLSEXT_TYPE_opaque_prf_input=0x9527
658 to the "config" or "Configure" script to enable the extension,
659 assuming extension number 0x9527 (which is a completely arbitrary
660 and unofficial assignment based on the MD5 hash of the Internet
661 Draft). Note that by doing so, you potentially lose
662 interoperability with other TLS implementations since these might
663 be using the same extension number for other purposes.
665 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
666 opaque PRF input value to use in the handshake. This will create
667 an interal copy of the length-'len' string at 'src', and will
668 return non-zero for success.
670 To get more control and flexibility, provide a callback function
673 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
674 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
678 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
681 Callback function 'cb' will be called in handshakes, and is
682 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
683 Argument 'arg' is for application purposes (the value as given to
684 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
685 be provided to the callback function). The callback function
686 has to return non-zero to report success: usually 1 to use opaque
687 PRF input just if possible, or 2 to enforce use of the opaque PRF
688 input. In the latter case, the library will abort the handshake
689 if opaque PRF input is not successfully negotiated.
691 Arguments 'peerinput' and 'len' given to the callback function
692 will always be NULL and 0 in the case of a client. A server will
693 see the client's opaque PRF input through these variables if
694 available (NULL and 0 otherwise). Note that if the server
695 provides an opaque PRF input, the length must be the same as the
696 length of the client's opaque PRF input.
698 Note that the callback function will only be called when creating
699 a new session (session resumption can resume whatever was
700 previously negotiated), and will not be called in SSL 2.0
701 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
702 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
703 for applications that need to enforce opaque PRF input.
707 *) Update ssl code to support digests other than SHA1+MD5 for handshake
710 [Victor B. Wagner <vitus@cryptocom.ru>]
712 *) Add RFC4507 support to OpenSSL. This includes the corrections in
713 RFC4507bis. The encrypted ticket format is an encrypted encoded
714 SSL_SESSION structure, that way new session features are automatically
717 If a client application caches session in an SSL_SESSION structure
718 support is transparent because tickets are now stored in the encoded
721 The SSL_CTX structure automatically generates keys for ticket
722 protection in servers so again support should be possible
723 with no application modification.
725 If a client or server wishes to disable RFC4507 support then the option
726 SSL_OP_NO_TICKET can be set.
728 Add a TLS extension debugging callback to allow the contents of any client
729 or server extensions to be examined.
731 This work was sponsored by Google.
734 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
735 OpenSSL should now compile cleanly on gcc 4.2
736 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
738 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
739 support including streaming MAC support: this is required for GOST
741 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
743 *) Add option -stream to use PKCS#7 streaming in smime utility. New
744 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
745 to output in BER and PEM format.
748 *) Experimental support for use of HMAC via EVP_PKEY interface. This
749 allows HMAC to be handled via the EVP_DigestSign*() interface. The
750 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
751 ENGINE support for HMAC keys which are unextractable. New -mac and
752 -macopt options to dgst utility.
755 *) New option -sigopt to dgst utility. Update dgst to use
756 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
757 alternative signing paramaters such as X9.31 or PSS in the dgst
761 *) Change ssl_cipher_apply_rule(), the internal function that does
762 the work each time a ciphersuite string requests enabling
763 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
764 removing ("!foo+bar") a class of ciphersuites: Now it maintains
765 the order of disabled ciphersuites such that those ciphersuites
766 that most recently went from enabled to disabled not only stay
767 in order with respect to each other, but also have higher priority
768 than other disabled ciphersuites the next time ciphersuites are
771 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
772 the same ciphersuites as with "HIGH" alone, but in a specific
773 order where the PSK ciphersuites come first (since they are the
774 most recently disabled ciphersuites when "HIGH" is parsed).
776 Also, change ssl_create_cipher_list() (using this new
777 funcionality) such that between otherwise identical
778 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
782 *) Change ssl_create_cipher_list() so that it automatically
783 arranges the ciphersuites in reasonable order before starting
784 to process the rule string. Thus, the definition for "DEFAULT"
785 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
786 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
787 This makes it much easier to arrive at a reasonable default order
788 in applications for which anonymous ciphers are OK (meaning
789 that you can't actually use DEFAULT).
790 [Bodo Moeller; suggested by Victor Duchovni]
792 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
793 processing) into multiple integers instead of setting
794 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
795 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
796 (These masks as well as the individual bit definitions are hidden
797 away into the non-exported interface ssl/ssl_locl.h, so this
798 change to the definition of the SSL_CIPHER structure shouldn't
799 affect applications.) This give us more bits for each of these
800 categories, so there is no longer a need to coagulate AES128 and
801 AES256 into a single algorithm bit, and to coagulate Camellia128
802 and Camellia256 into a single algorithm bit, which has led to all
805 Thus, among other things, the kludge introduced in 0.9.7m and
806 0.9.8e for masking out AES256 independently of AES128 or masking
807 out Camellia256 independently of AES256 is not needed here in 0.9.9.
809 With the change, we also introduce new ciphersuite aliases that
810 so far were missing: "AES128", "AES256", "CAMELLIA128", and
814 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
815 Use the leftmost N bytes of the signature input if the input is
816 larger than the prime q (with N being the size in bytes of q).
819 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
820 it yet and it is largely untested.
823 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
826 *) Initial incomplete changes to avoid need for function casts in OpenSSL
827 some compilers (gcc 4.2 and later) reject their use. Safestack is
828 reimplemented. Update ASN1 to avoid use of legacy functions.
831 *) Win32/64 targets are linked with Winsock2.
834 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
835 to external functions. This can be used to increase CRL handling
836 efficiency especially when CRLs are very large by (for example) storing
837 the CRL revoked certificates in a database.
840 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
841 new CRLs added to a directory can be used. New command line option
842 -verify_return_error to s_client and s_server. This causes real errors
843 to be returned by the verify callback instead of carrying on no matter
844 what. This reflects the way a "real world" verify callback would behave.
847 *) GOST engine, supporting several GOST algorithms and public key formats.
848 Kindly donated by Cryptocom.
851 *) Partial support for Issuing Distribution Point CRL extension. CRLs
852 partitioned by DP are handled but no indirect CRL or reason partitioning
853 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
854 selected via a scoring technique which handles IDP and AKID in CRLs.
857 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
858 will ultimately be used for all verify operations: this will remove the
859 X509_STORE dependency on certificate verification and allow alternative
860 lookup methods. X509_STORE based implementations of these two callbacks.
863 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
864 Modify get_crl() to find a valid (unexpired) CRL if possible.
867 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
868 this would be called X509_CRL_cmp() but that name is already used by
869 a function that just compares CRL issuer names. Cache several CRL
870 extensions in X509_CRL structure and cache CRLDP in X509.
873 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
874 this maps equivalent X509_NAME structures into a consistent structure.
875 Name comparison can then be performed rapidly using memcmp().
878 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
882 *) Allow digests to supply their own micalg string for S/MIME type using
883 the ctrl EVP_MD_CTRL_MICALG.
886 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
887 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
888 ctrl. It can then customise the structure before and/or after signing
892 *) New function OBJ_add_sigid() to allow application defined signature OIDs
893 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
894 to free up any added signature OIDs.
897 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
898 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
899 digest and cipher tables. New options added to openssl utility:
900 list-message-digest-algorithms and list-cipher-algorithms.
903 *) Change the array representation of binary polynomials: the list
904 of degrees of non-zero coefficients is now terminated with -1.
905 Previously it was terminated with 0, which was also part of the
906 value; thus, the array representation was not applicable to
907 polynomials where t^0 has coefficient zero. This change makes
908 the array representation useful in a more general context.
911 *) Various modifications and fixes to SSL/TLS cipher string
912 handling. For ECC, the code now distinguishes between fixed ECDH
913 with RSA certificates on the one hand and with ECDSA certificates
914 on the other hand, since these are separate ciphersuites. The
915 unused code for Fortezza ciphersuites has been removed.
917 For consistency with EDH, ephemeral ECDH is now called "EECDH"
918 (not "ECDHE"). For consistency with the code for DH
919 certificates, use of ECDH certificates is now considered ECDH
920 authentication, not RSA or ECDSA authentication (the latter is
921 merely the CA's signing algorithm and not actively used in the
924 The temporary ciphersuite alias "ECCdraft" is no longer
925 available, and ECC ciphersuites are no longer excluded from "ALL"
926 and "DEFAULT". The following aliases now exist for RFC 4492
927 ciphersuites, most of these by analogy with the DH case:
929 kECDHr - ECDH cert, signed with RSA
930 kECDHe - ECDH cert, signed with ECDSA
931 kECDH - ECDH cert (signed with either RSA or ECDSA)
932 kEECDH - ephemeral ECDH
933 ECDH - ECDH cert or ephemeral ECDH
939 AECDH - anonymous ECDH
940 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
944 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
945 Use correct micalg parameters depending on digest(s) in signed message.
948 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
949 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
952 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
953 an engine to register a method. Add ENGINE lookups for methods and
954 functional reference processing.
957 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
958 EVP_{Sign,Verify}* which allow an application to customise the signature
962 *) New -resign option to smime utility. This adds one or more signers
963 to an existing PKCS#7 signedData structure. Also -md option to use an
964 alternative message digest algorithm for signing.
967 *) Tidy up PKCS#7 routines and add new functions to make it easier to
968 create PKCS7 structures containing multiple signers. Update smime
969 application to support multiple signers.
972 *) New -macalg option to pkcs12 utility to allow setting of an alternative
976 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
977 Reorganize PBE internals to lookup from a static table using NIDs,
978 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
979 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
980 PRF which will be automatically used with PBES2.
983 *) Replace the algorithm specific calls to generate keys in "req" with the
987 *) Update PKCS#7 enveloped data routines to use new API. This is now
988 supported by any public key method supporting the encrypt operation. A
989 ctrl is added to allow the public key algorithm to examine or modify
990 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
994 *) Add a ctrl to asn1 method to allow a public key algorithm to express
995 a default digest type to use. In most cases this will be SHA1 but some
996 algorithms (such as GOST) need to specify an alternative digest. The
997 return value indicates how strong the prefernce is 1 means optional and
998 2 is mandatory (that is it is the only supported type). Modify
999 ASN1_item_sign() to accept a NULL digest argument to indicate it should
1000 use the default md. Update openssl utilities to use the default digest
1001 type for signing if it is not explicitly indicated.
1004 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
1005 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
1006 signing method from the key type. This effectively removes the link
1007 between digests and public key types.
1010 *) Add an OID cross reference table and utility functions. Its purpose is to
1011 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
1012 rsaEncryption. This will allow some of the algorithm specific hackery
1013 needed to use the correct OID to be removed.
1016 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
1017 structures for PKCS7_sign(). They are now set up by the relevant public
1021 *) Add provisional EC pkey method with support for ECDSA and ECDH.
1024 *) Add support for key derivation (agreement) in the API, DH method and
1028 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
1029 public and private key formats. As a side effect these add additional
1030 command line functionality not previously available: DSA signatures can be
1031 generated and verified using pkeyutl and DH key support and generation in
1036 [Oliver Tappe <zooey@hirschkaefer.de>]
1038 *) New make target "install_html_docs" installs HTML renditions of the
1040 [Oliver Tappe <zooey@hirschkaefer.de>]
1042 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
1043 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
1044 support key and parameter generation and add initial key generation
1045 functionality for RSA.
1048 *) Add functions for main EVP_PKEY_method operations. The undocumented
1049 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
1050 EVP_PKEY_{encrypt,decrypt}_old.
1053 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
1054 key API, doesn't do much yet.
1057 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
1058 public key algorithms. New option to openssl utility:
1059 "list-public-key-algorithms" to print out info.
1062 *) Implement the Supported Elliptic Curves Extension for
1063 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1066 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
1067 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
1070 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
1071 utilities such as rsa, dsa, dsaparam etc except they process any key
1075 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
1076 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
1077 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
1081 *) Initial support for pluggable public key ASN1.
1082 De-spaghettify the public key ASN1 handling. Move public and private
1083 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
1084 algorithm specific handling to a single module within the relevant
1085 algorithm directory. Add functions to allow (near) opaque processing
1086 of public and private key structures.
1089 *) Implement the Supported Point Formats Extension for
1090 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1093 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
1094 for the psk identity [hint] and the psk callback functions to the
1095 SSL_SESSION, SSL and SSL_CTX structure.
1098 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
1102 SSL_CTX_use_psk_identity_hint
1103 SSL_get_psk_identity_hint
1104 SSL_get_psk_identity
1105 SSL_use_psk_identity_hint
1107 [Mika Kousa and Pasi Eronen of Nokia Corporation]
1109 *) Add RFC 3161 compliant time stamp request creation, response generation
1110 and response verification functionality.
1111 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
1113 *) Add initial support for TLS extensions, specifically for the server_name
1114 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1115 have new members for a host name. The SSL data structure has an
1116 additional member SSL_CTX *initial_ctx so that new sessions can be
1117 stored in that context to allow for session resumption, even after the
1118 SSL has been switched to a new SSL_CTX in reaction to a client's
1119 server_name extension.
1121 New functions (subject to change):
1123 SSL_get_servername()
1124 SSL_get_servername_type()
1127 New CTRL codes and macros (subject to change):
1129 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1130 - SSL_CTX_set_tlsext_servername_callback()
1131 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1132 - SSL_CTX_set_tlsext_servername_arg()
1133 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1135 openssl s_client has a new '-servername ...' option.
1137 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1138 '-key2 ...', '-servername_fatal' (subject to change). This allows
1139 testing the HostName extension for a specific single host name ('-cert'
1140 and '-key' remain fallbacks for handshakes without HostName
1141 negotiation). If the unrecogninzed_name alert has to be sent, this by
1142 default is a warning; it becomes fatal with the '-servername_fatal'
1145 [Peter Sylvester, Remy Allais, Christophe Renou]
1147 *) Whirlpool hash implementation is added.
1150 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
1151 bn(64,32). Because of instruction set limitations it doesn't have
1152 any negative impact on performance. This was done mostly in order
1153 to make it possible to share assembler modules, such as bn_mul_mont
1154 implementations, between 32- and 64-bit builds without hassle.
1157 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
1158 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
1162 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
1163 dedicated Montgomery multiplication procedure, is introduced.
1164 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
1165 "64-bit" performance on certain 32-bit targets.
1168 *) New option SSL_OP_NO_COMP to disable use of compression selectively
1169 in SSL structures. New SSL ctrl to set maximum send fragment size.
1170 Save memory by seeting the I/O buffer sizes dynamically instead of
1171 using the maximum available value.
1174 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
1175 in addition to the text details.
1178 *) Very, very preliminary EXPERIMENTAL support for printing of general
1179 ASN1 structures. This currently produces rather ugly output and doesn't
1180 handle several customised structures at all.
1183 *) Integrated support for PVK file format and some related formats such
1184 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
1185 these in the 'rsa' and 'dsa' utilities.
1188 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
1191 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
1192 place for the (very old) "NETSCAPE" format certificates which are now
1193 handled using new ASN1 code equivalents.
1196 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
1197 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
1198 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
1201 *) Modify CRL distribution points extension code to print out previously
1202 unsupported fields. Enhance extension setting code to allow setting of
1206 *) Add print and set support for Issuing Distribution Point CRL extension.
1209 *) Change 'Configure' script to enable Camellia by default.
1212 Changes between 0.9.8q and 0.9.8r [8 Feb 2011]
1214 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
1215 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
1217 *) Fix bug in string printing code: if *any* escaping is enabled we must
1218 escape the escape character (backslash) or the resulting string is
1222 Changes between 0.9.8p and 0.9.8q [2 Dec 2010]
1224 *) Disable code workaround for ancient and obsolete Netscape browsers
1225 and servers: an attacker can use it in a ciphersuite downgrade attack.
1226 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
1229 *) Fixed J-PAKE implementation error, originally discovered by
1230 Sebastien Martini, further info and confirmation from Stefan
1231 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
1234 Changes between 0.9.8o and 0.9.8p [16 Nov 2010]
1236 *) Fix extension code to avoid race conditions which can result in a buffer
1237 overrun vulnerability: resumed sessions must not be modified as they can
1238 be shared by multiple threads. CVE-2010-3864
1241 *) Fix for double free bug in ssl/s3_clnt.c CVE-2010-2939
1244 *) Don't reencode certificate when calculating signature: cache and use
1245 the original encoding instead. This makes signature verification of
1246 some broken encodings work correctly.
1249 *) ec2_GF2m_simple_mul bugfix: compute correct result if the output EC_POINT
1250 is also one of the inputs.
1251 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
1253 *) Don't repeatedly append PBE algorithms to table if they already exist.
1254 Sort table on each new add. This effectively makes the table read only
1255 after all algorithms are added and subsequent calls to PKCS12_pbe_add
1259 Changes between 0.9.8n and 0.9.8o [01 Jun 2010]
1261 [NB: OpenSSL 0.9.8o and later 0.9.8 patch levels were released after
1264 *) Correct a typo in the CMS ASN1 module which can result in invalid memory
1265 access or freeing data twice (CVE-2010-0742)
1266 [Steve Henson, Ronald Moesbergen <intercommit@gmail.com>]
1268 *) Add SHA2 algorithms to SSL_library_init(). SHA2 is becoming far more
1269 common in certificates and some applications which only call
1270 SSL_library_init and not OpenSSL_add_all_algorithms() will fail.
1274 Reduce copying into .apps and .test in makevms.com
1275 Don't try to use blank CA certificate in CA.com
1276 Allow use of C files from original directories in maketests.com
1277 [Steven M. Schweda" <sms@antinode.info>]
1279 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
1281 *) When rejecting SSL/TLS records due to an incorrect version number, never
1282 update s->server with a new major version number. As of
1283 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
1284 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
1285 the previous behavior could result in a read attempt at NULL when
1286 receiving specific incorrect SSL/TLS records once record payload
1287 protection is active. (CVE-2010-0740)
1288 [Bodo Moeller, Adam Langley <agl@chromium.org>]
1290 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
1291 could be crashed if the relevant tables were not present (e.g. chrooted).
1292 [Tomas Hoger <thoger@redhat.com>]
1294 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
1296 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
1297 [Martin Olsson, Neel Mehta]
1299 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
1300 accommodate for stack sorting, always a write lock!).
1303 *) On some versions of WIN32 Heap32Next is very slow. This can cause
1304 excessive delays in the RAND_poll(): over a minute. As a workaround
1305 include a time check in the inner Heap32Next loop too.
1308 *) The code that handled flushing of data in SSL/TLS originally used the
1309 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
1310 the problem outlined in PR#1949. The fix suggested there however can
1311 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
1312 of Apache). So instead simplify the code to flush unconditionally.
1313 This should be fine since flushing with no data to flush is a no op.
1316 *) Handle TLS versions 2.0 and later properly and correctly use the
1317 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
1318 off ancient servers have a habit of sticking around for a while...
1321 *) Modify compression code so it frees up structures without using the
1322 ex_data callbacks. This works around a problem where some applications
1323 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
1324 restarting) then use compression (e.g. SSL with compression) later.
1325 This results in significant per-connection memory leaks and
1326 has caused some security issues including CVE-2008-1678 and
1330 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
1331 change when encrypting or decrypting.
1334 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
1335 connect and renegotiate with servers which do not support RI.
1336 Until RI is more widely deployed this option is enabled by default.
1339 *) Add "missing" ssl ctrls to clear options and mode.
1342 *) If client attempts to renegotiate and doesn't support RI respond with
1343 a no_renegotiation alert as required by RFC5746. Some renegotiating
1344 TLS clients will continue a connection gracefully when they receive
1345 the alert. Unfortunately OpenSSL mishandled this alert and would hang
1346 waiting for a server hello which it will never receive. Now we treat a
1347 received no_renegotiation alert as a fatal error. This is because
1348 applications requesting a renegotiation might well expect it to succeed
1349 and would have no code in place to handle the server denying it so the
1350 only safe thing to do is to terminate the connection.
1353 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
1354 peer supports secure renegotiation and 0 otherwise. Print out peer
1355 renegotiation support in s_client/s_server.
1358 *) Replace the highly broken and deprecated SPKAC certification method with
1359 the updated NID creation version. This should correctly handle UTF8.
1362 *) Implement RFC5746. Re-enable renegotiation but require the extension
1363 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
1364 turns out to be a bad idea. It has been replaced by
1365 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
1366 SSL_CTX_set_options(). This is really not recommended unless you
1367 know what you are doing.
1368 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
1370 *) Fixes to stateless session resumption handling. Use initial_ctx when
1371 issuing and attempting to decrypt tickets in case it has changed during
1372 servername handling. Use a non-zero length session ID when attempting
1373 stateless session resumption: this makes it possible to determine if
1374 a resumption has occurred immediately after receiving server hello
1375 (several places in OpenSSL subtly assume this) instead of later in
1379 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
1380 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
1381 fixes for a few places where the return code is not checked
1383 [Julia Lawall <julia@diku.dk>]
1385 *) Add --strict-warnings option to Configure script to include devteam
1386 warnings in other configurations.
1389 *) Add support for --libdir option and LIBDIR variable in makefiles. This
1390 makes it possible to install openssl libraries in locations which
1391 have names other than "lib", for example "/usr/lib64" which some
1393 [Steve Henson, based on patch from Jeremy Utley]
1395 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
1396 X690 8.9.12 and can produce some misleading textual output of OIDs.
1397 [Steve Henson, reported by Dan Kaminsky]
1399 *) Delete MD2 from algorithm tables. This follows the recommendation in
1400 several standards that it is not used in new applications due to
1401 several cryptographic weaknesses. For binary compatibility reasons
1402 the MD2 API is still compiled in by default.
1405 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
1409 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
1410 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
1412 [Guenter <lists@gknw.net>]
1414 *) Fix the server certificate chain building code to use X509_verify_cert(),
1415 it used to have an ad-hoc builder which was unable to cope with anything
1416 other than a simple chain.
1417 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
1419 *) Don't check self signed certificate signatures in X509_verify_cert()
1420 by default (a flag can override this): it just wastes time without
1421 adding any security. As a useful side effect self signed root CAs
1422 with non-FIPS digests are now usable in FIPS mode.
1425 *) In dtls1_process_out_of_seq_message() the check if the current message
1426 is already buffered was missing. For every new message was memory
1427 allocated, allowing an attacker to perform an denial of service attack
1428 with sending out of seq handshake messages until there is no memory
1429 left. Additionally every future messege was buffered, even if the
1430 sequence number made no sense and would be part of another handshake.
1431 So only messages with sequence numbers less than 10 in advance will be
1432 buffered. (CVE-2009-1378)
1433 [Robin Seggelmann, discovered by Daniel Mentz]
1435 *) Records are buffered if they arrive with a future epoch to be
1436 processed after finishing the corresponding handshake. There is
1437 currently no limitation to this buffer allowing an attacker to perform
1438 a DOS attack with sending records with future epochs until there is no
1439 memory left. This patch adds the pqueue_size() function to detemine
1440 the size of a buffer and limits the record buffer to 100 entries.
1442 [Robin Seggelmann, discovered by Daniel Mentz]
1444 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
1445 parent structure is freed. (CVE-2009-1379)
1448 *) Handle non-blocking I/O properly in SSL_shutdown() call.
1449 [Darryl Miles <darryl-mailinglists@netbauds.net>]
1452 [Ilya O. <vrghost@gmail.com>]
1454 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
1456 *) Disable renegotiation completely - this fixes a severe security
1457 problem (CVE-2009-3555) at the cost of breaking all
1458 renegotiation. Renegotiation can be re-enabled by setting
1459 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
1460 run-time. This is really not recommended unless you know what
1464 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
1466 *) Don't set val to NULL when freeing up structures, it is freed up by
1467 underlying code. If sizeof(void *) > sizeof(long) this can result in
1468 zeroing past the valid field. (CVE-2009-0789)
1469 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
1471 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
1472 checked correctly. This would allow some invalid signed attributes to
1473 appear to verify correctly. (CVE-2009-0591)
1474 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1476 *) Reject UniversalString and BMPString types with invalid lengths. This
1477 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
1478 a legal length. (CVE-2009-0590)
1481 *) Set S/MIME signing as the default purpose rather than setting it
1482 unconditionally. This allows applications to override it at the store
1486 *) Permit restricted recursion of ASN1 strings. This is needed in practice
1487 to handle some structures.
1490 *) Improve efficiency of mem_gets: don't search whole buffer each time
1492 [Jeremy Shapiro <jnshapir@us.ibm.com>]
1494 *) New -hex option for openssl rand.
1497 *) Print out UTF8String and NumericString when parsing ASN1.
1500 *) Support NumericString type for name components.
1503 *) Allow CC in the environment to override the automatically chosen
1504 compiler. Note that nothing is done to ensure flags work with the
1508 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
1510 *) Properly check EVP_VerifyFinal() and similar return values
1512 [Ben Laurie, Bodo Moeller, Google Security Team]
1514 *) Enable TLS extensions by default.
1517 *) Allow the CHIL engine to be loaded, whether the application is
1518 multithreaded or not. (This does not release the developer from the
1519 obligation to set up the dynamic locking callbacks.)
1520 [Sander Temme <sander@temme.net>]
1522 *) Use correct exit code if there is an error in dgst command.
1523 [Steve Henson; problem pointed out by Roland Dirlewanger]
1525 *) Tweak Configure so that you need to say "experimental-jpake" to enable
1526 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
1529 *) Add experimental JPAKE support, including demo authentication in
1530 s_client and s_server.
1533 *) Set the comparison function in v3_addr_canonize().
1534 [Rob Austein <sra@hactrn.net>]
1536 *) Add support for XMPP STARTTLS in s_client.
1537 [Philip Paeps <philip@freebsd.org>]
1539 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
1540 to ensure that even with this option, only ciphersuites in the
1541 server's preference list will be accepted. (Note that the option
1542 applies only when resuming a session, so the earlier behavior was
1543 just about the algorithm choice for symmetric cryptography.)
1546 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
1548 *) Fix NULL pointer dereference if a DTLS server received
1549 ChangeCipherSpec as first record (CVE-2009-1386).
1552 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
1553 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
1556 *) The fix in 0.9.8c that supposedly got rid of unsafe
1557 double-checked locking was incomplete for RSA blinding,
1558 addressing just one layer of what turns out to have been
1559 doubly unsafe triple-checked locking.
1561 So now fix this for real by retiring the MONT_HELPER macro
1562 in crypto/rsa/rsa_eay.c.
1564 [Bodo Moeller; problem pointed out by Marius Schilder]
1566 *) Various precautionary measures:
1568 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
1570 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
1571 (NB: This would require knowledge of the secret session ticket key
1572 to exploit, in which case you'd be SOL either way.)
1574 - Change bn_nist.c so that it will properly handle input BIGNUMs
1575 outside the expected range.
1577 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
1580 [Neel Mehta, Bodo Moeller]
1582 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
1583 the load fails. Useful for distros.
1584 [Ben Laurie and the FreeBSD team]
1586 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
1589 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
1592 *) Expand ENGINE to support engine supplied SSL client certificate functions.
1594 This work was sponsored by Logica.
1597 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
1598 keystores. Support for SSL/TLS client authentication too.
1599 Not compiled unless enable-capieng specified to Configure.
1601 This work was sponsored by Logica.
1604 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
1605 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
1606 attribute creation routines such as certifcate requests and PKCS#12
1610 Changes between 0.9.8g and 0.9.8h [28 May 2008]
1612 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
1613 handshake which could lead to a cilent crash as found using the
1614 Codenomicon TLS test suite (CVE-2008-1672)
1615 [Steve Henson, Mark Cox]
1617 *) Fix double free in TLS server name extensions which could lead to
1618 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
1621 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
1623 Clear the error queue to ensure that error entries left from
1624 older function calls do not interfere with the correct operation.
1625 [Lutz Jaenicke, Erik de Castro Lopo]
1627 *) Remove root CA certificates of commercial CAs:
1629 The OpenSSL project does not recommend any specific CA and does not
1630 have any policy with respect to including or excluding any CA.
1631 Therefore it does not make any sense to ship an arbitrary selection
1632 of root CA certificates with the OpenSSL software.
1635 *) RSA OAEP patches to fix two separate invalid memory reads.
1636 The first one involves inputs when 'lzero' is greater than
1637 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
1638 before the beginning of from). The second one involves inputs where
1639 the 'db' section contains nothing but zeroes (there is a one-byte
1640 invalid read after the end of 'db').
1641 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1643 *) Partial backport from 0.9.9-dev:
1645 Introduce bn_mul_mont (dedicated Montgomery multiplication
1646 procedure) as a candidate for BIGNUM assembler implementation.
1647 While 0.9.9-dev uses assembler for various architectures, only
1648 x86_64 is available by default here in the 0.9.8 branch, and
1649 32-bit x86 is available through a compile-time setting.
1651 To try the 32-bit x86 assembler implementation, use Configure
1652 option "enable-montasm" (which exists only for this backport).
1654 As "enable-montasm" for 32-bit x86 disclaims code stability
1655 anyway, in this constellation we activate additional code
1656 backported from 0.9.9-dev for further performance improvements,
1657 namely BN_from_montgomery_word. (To enable this otherwise,
1658 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
1660 [Andy Polyakov (backport partially by Bodo Moeller)]
1662 *) Add TLS session ticket callback. This allows an application to set
1663 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
1664 values. This is useful for key rollover for example where several key
1665 sets may exist with different names.
1668 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
1669 This was broken until now in 0.9.8 releases, such that the only way
1670 a registered ENGINE could be used (assuming it initialises
1671 successfully on the host) was to explicitly set it as the default
1672 for the relevant algorithms. This is in contradiction with 0.9.7
1673 behaviour and the documentation. With this fix, when an ENGINE is
1674 registered into a given algorithm's table of implementations, the
1675 'uptodate' flag is reset so that auto-discovery will be used next
1676 time a new context for that algorithm attempts to select an
1678 [Ian Lister (tweaked by Geoff Thorpe)]
1680 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
1681 implemention in the following ways:
1683 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
1686 Lack of BER streaming support means one pass streaming processing is
1687 only supported if data is detached: setting the streaming flag is
1688 ignored for embedded content.
1690 CMS support is disabled by default and must be explicitly enabled
1691 with the enable-cms configuration option.
1694 *) Update the GMP engine glue to do direct copies between BIGNUM and
1695 mpz_t when openssl and GMP use the same limb size. Otherwise the
1696 existing "conversion via a text string export" trick is still used.
1697 [Paul Sheer <paulsheer@gmail.com>]
1699 *) Zlib compression BIO. This is a filter BIO which compressed and
1700 uncompresses any data passed through it.
1703 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
1704 RFC3394 compatible AES key wrapping.
1707 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
1708 sets string data without copying. X509_ALGOR_set0() and
1709 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
1710 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
1711 from an X509_ATTRIBUTE structure optionally checking it occurs only
1712 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
1716 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
1717 to get the expected BN_FLG_CONSTTIME behavior.
1718 [Bodo Moeller (Google)]
1722 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
1723 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
1724 - added some more tests to do_tests.pl
1725 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
1726 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
1727 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
1728 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
1729 - various changes to netware.pl to enable gcc-cross builds on Win32
1731 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
1732 - various changes to fix missing prototype warnings
1733 - fixed x86nasm.pl to create correct asm files for NASM COFF output
1734 - added AES, WHIRLPOOL and CPUID assembler code to build files
1735 - added missing AES assembler make rules to mk1mf.pl
1736 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
1737 [Guenter Knauf <eflash@gmx.net>]
1739 *) Implement certificate status request TLS extension defined in RFC3546.
1740 A client can set the appropriate parameters and receive the encoded
1741 OCSP response via a callback. A server can query the supplied parameters
1742 and set the encoded OCSP response in the callback. Add simplified examples
1743 to s_client and s_server.
1746 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
1748 *) Fix various bugs:
1749 + Binary incompatibility of ssl_ctx_st structure
1750 + DTLS interoperation with non-compliant servers
1751 + Don't call get_session_cb() without proposed session
1752 + Fix ia64 assembler code
1753 [Andy Polyakov, Steve Henson]
1755 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
1757 *) DTLS Handshake overhaul. There were longstanding issues with
1758 OpenSSL DTLS implementation, which were making it impossible for
1759 RFC 4347 compliant client to communicate with OpenSSL server.
1760 Unfortunately just fixing these incompatibilities would "cut off"
1761 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
1762 server keeps tolerating non RFC compliant syntax. The opposite is
1763 not true, 0.9.8f client can not communicate with earlier server.
1764 This update even addresses CVE-2007-4995.
1767 *) Changes to avoid need for function casts in OpenSSL: some compilers
1768 (gcc 4.2 and later) reject their use.
1769 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
1772 *) Add RFC4507 support to OpenSSL. This includes the corrections in
1773 RFC4507bis. The encrypted ticket format is an encrypted encoded
1774 SSL_SESSION structure, that way new session features are automatically
1777 If a client application caches session in an SSL_SESSION structure
1778 support is transparent because tickets are now stored in the encoded
1781 The SSL_CTX structure automatically generates keys for ticket
1782 protection in servers so again support should be possible
1783 with no application modification.
1785 If a client or server wishes to disable RFC4507 support then the option
1786 SSL_OP_NO_TICKET can be set.
1788 Add a TLS extension debugging callback to allow the contents of any client
1789 or server extensions to be examined.
1791 This work was sponsored by Google.
1794 *) Add initial support for TLS extensions, specifically for the server_name
1795 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1796 have new members for a host name. The SSL data structure has an
1797 additional member SSL_CTX *initial_ctx so that new sessions can be
1798 stored in that context to allow for session resumption, even after the
1799 SSL has been switched to a new SSL_CTX in reaction to a client's
1800 server_name extension.
1802 New functions (subject to change):
1804 SSL_get_servername()
1805 SSL_get_servername_type()
1808 New CTRL codes and macros (subject to change):
1810 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1811 - SSL_CTX_set_tlsext_servername_callback()
1812 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1813 - SSL_CTX_set_tlsext_servername_arg()
1814 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1816 openssl s_client has a new '-servername ...' option.
1818 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1819 '-key2 ...', '-servername_fatal' (subject to change). This allows
1820 testing the HostName extension for a specific single host name ('-cert'
1821 and '-key' remain fallbacks for handshakes without HostName
1822 negotiation). If the unrecogninzed_name alert has to be sent, this by
1823 default is a warning; it becomes fatal with the '-servername_fatal'
1826 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
1828 *) Add AES and SSE2 assembly language support to VC++ build.
1831 *) Mitigate attack on final subtraction in Montgomery reduction.
1834 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
1835 (which previously caused an internal error).
1838 *) Squeeze another 10% out of IGE mode when in != out.
1841 *) AES IGE mode speedup.
1842 [Dean Gaudet (Google)]
1844 *) Add the Korean symmetric 128-bit cipher SEED (see
1845 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
1846 add SEED ciphersuites from RFC 4162:
1848 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
1849 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
1850 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
1851 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
1853 To minimize changes between patchlevels in the OpenSSL 0.9.8
1854 series, SEED remains excluded from compilation unless OpenSSL
1855 is configured with 'enable-seed'.
1856 [KISA, Bodo Moeller]
1858 *) Mitigate branch prediction attacks, which can be practical if a
1859 single processor is shared, allowing a spy process to extract
1860 information. For detailed background information, see
1861 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
1862 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
1863 and Necessary Software Countermeasures"). The core of the change
1864 are new versions BN_div_no_branch() and
1865 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
1866 respectively, which are slower, but avoid the security-relevant
1867 conditional branches. These are automatically called by BN_div()
1868 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
1869 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
1870 remove a conditional branch.
1872 BN_FLG_CONSTTIME is the new name for the previous
1873 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
1874 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
1875 in the exponent causes BN_mod_exp_mont() to use the alternative
1876 implementation in BN_mod_exp_mont_consttime().) The old name
1877 remains as a deprecated alias.
1879 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
1880 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
1881 constant-time implementations for more than just exponentiation.
1882 Here too the old name is kept as a deprecated alias.
1884 BN_BLINDING_new() will now use BN_dup() for the modulus so that
1885 the BN_BLINDING structure gets an independent copy of the
1886 modulus. This means that the previous "BIGNUM *m" argument to
1887 BN_BLINDING_new() and to BN_BLINDING_create_param() now
1888 essentially becomes "const BIGNUM *m", although we can't actually
1889 change this in the header file before 0.9.9. It allows
1890 RSA_setup_blinding() to use BN_with_flags() on the modulus to
1891 enable BN_FLG_CONSTTIME.
1893 [Matthew D Wood (Intel Corp)]
1895 *) In the SSL/TLS server implementation, be strict about session ID
1896 context matching (which matters if an application uses a single
1897 external cache for different purposes). Previously,
1898 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
1899 set. This did ensure strict client verification, but meant that,
1900 with applications using a single external cache for quite
1901 different requirements, clients could circumvent ciphersuite
1902 restrictions for a given session ID context by starting a session
1903 in a different context.
1906 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
1907 a ciphersuite string such as "DEFAULT:RSA" cannot enable
1908 authentication-only ciphersuites.
1911 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
1912 not complete and could lead to a possible single byte overflow
1913 (CVE-2007-5135) [Ben Laurie]
1915 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
1917 *) Since AES128 and AES256 (and similarly Camellia128 and
1918 Camellia256) share a single mask bit in the logic of
1919 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
1920 kludge to work properly if AES128 is available and AES256 isn't
1921 (or if Camellia128 is available and Camellia256 isn't).
1924 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
1925 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
1926 When a point or a seed is encoded in a BIT STRING, we need to
1927 prevent the removal of trailing zero bits to get the proper DER
1928 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
1929 of a NamedBitList, for which trailing 0 bits need to be removed.)
1932 *) Have SSL/TLS server implementation tolerate "mismatched" record
1933 protocol version while receiving ClientHello even if the
1934 ClientHello is fragmented. (The server can't insist on the
1935 particular protocol version it has chosen before the ServerHello
1936 message has informed the client about his choice.)
1939 *) Add RFC 3779 support.
1940 [Rob Austein for ARIN, Ben Laurie]
1942 *) Load error codes if they are not already present instead of using a
1943 static variable. This allows them to be cleanly unloaded and reloaded.
1944 Improve header file function name parsing.
1947 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
1948 or CAPABILITY handshake as required by RFCs.
1951 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
1953 *) Introduce limits to prevent malicious keys being able to
1954 cause a denial of service. (CVE-2006-2940)
1955 [Steve Henson, Bodo Moeller]
1957 *) Fix ASN.1 parsing of certain invalid structures that can result
1958 in a denial of service. (CVE-2006-2937) [Steve Henson]
1960 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
1961 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
1963 *) Fix SSL client code which could crash if connecting to a
1964 malicious SSLv2 server. (CVE-2006-4343)
1965 [Tavis Ormandy and Will Drewry, Google Security Team]
1967 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
1968 match only those. Before that, "AES256-SHA" would be interpreted
1969 as a pattern and match "AES128-SHA" too (since AES128-SHA got
1970 the same strength classification in 0.9.7h) as we currently only
1971 have a single AES bit in the ciphersuite description bitmap.
1972 That change, however, also applied to ciphersuite strings such as
1973 "RC4-MD5" that intentionally matched multiple ciphersuites --
1974 namely, SSL 2.0 ciphersuites in addition to the more common ones
1975 from SSL 3.0/TLS 1.0.
1977 So we change the selection algorithm again: Naming an explicit
1978 ciphersuite selects this one ciphersuite, and any other similar
1979 ciphersuite (same bitmap) from *other* protocol versions.
1980 Thus, "RC4-MD5" again will properly select both the SSL 2.0
1981 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
1983 Since SSL 2.0 does not have any ciphersuites for which the
1984 128/256 bit distinction would be relevant, this works for now.
1985 The proper fix will be to use different bits for AES128 and
1986 AES256, which would have avoided the problems from the beginning;
1987 however, bits are scarce, so we can only do this in a new release
1988 (not just a patchlevel) when we can change the SSL_CIPHER
1989 definition to split the single 'unsigned long mask' bitmap into
1990 multiple values to extend the available space.
1994 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
1996 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
1997 (CVE-2006-4339) [Ben Laurie and Google Security Team]
1999 *) Add AES IGE and biIGE modes.
2002 *) Change the Unix randomness entropy gathering to use poll() when
2003 possible instead of select(), since the latter has some
2004 undesirable limitations.
2005 [Darryl Miles via Richard Levitte and Bodo Moeller]
2007 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
2008 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
2009 cannot be implicitly activated as part of, e.g., the "AES" alias.
2010 However, please upgrade to OpenSSL 0.9.9[-dev] for
2011 non-experimental use of the ECC ciphersuites to get TLS extension
2012 support, which is required for curve and point format negotiation
2013 to avoid potential handshake problems.
2016 *) Disable rogue ciphersuites:
2018 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2019 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2020 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2022 The latter two were purportedly from
2023 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2026 Also deactivate the remaining ciphersuites from
2027 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2028 unofficial, and the ID has long expired.
2031 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2032 dual-core machines) and other potential thread-safety issues.
2035 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
2036 versions), which is now available for royalty-free use
2037 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
2038 Also, add Camellia TLS ciphersuites from RFC 4132.
2040 To minimize changes between patchlevels in the OpenSSL 0.9.8
2041 series, Camellia remains excluded from compilation unless OpenSSL
2042 is configured with 'enable-camellia'.
2045 *) Disable the padding bug check when compression is in use. The padding
2046 bug check assumes the first packet is of even length, this is not
2047 necessarily true if compresssion is enabled and can result in false
2048 positives causing handshake failure. The actual bug test is ancient
2049 code so it is hoped that implementations will either have fixed it by
2050 now or any which still have the bug do not support compression.
2053 Changes between 0.9.8a and 0.9.8b [04 May 2006]
2055 *) When applying a cipher rule check to see if string match is an explicit
2056 cipher suite and only match that one cipher suite if it is.
2059 *) Link in manifests for VC++ if needed.
2060 [Austin Ziegler <halostatue@gmail.com>]
2062 *) Update support for ECC-based TLS ciphersuites according to
2063 draft-ietf-tls-ecc-12.txt with proposed changes (but without
2064 TLS extensions, which are supported starting with the 0.9.9
2065 branch, not in the OpenSSL 0.9.8 branch).
2068 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
2069 opaque EVP_CIPHER_CTX handling.
2072 *) Fixes and enhancements to zlib compression code. We now only use
2073 "zlib1.dll" and use the default __cdecl calling convention on Win32
2074 to conform with the standards mentioned here:
2075 http://www.zlib.net/DLL_FAQ.txt
2076 Static zlib linking now works on Windows and the new --with-zlib-include
2077 --with-zlib-lib options to Configure can be used to supply the location
2078 of the headers and library. Gracefully handle case where zlib library
2082 *) Several fixes and enhancements to the OID generation code. The old code
2083 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
2084 handle numbers larger than ULONG_MAX, truncated printing and had a
2085 non standard OBJ_obj2txt() behaviour.
2088 *) Add support for building of engines under engine/ as shared libraries
2089 under VC++ build system.
2092 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
2093 Hopefully, we will not see any false combination of paths any more.
2096 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
2098 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2099 (part of SSL_OP_ALL). This option used to disable the
2100 countermeasure against man-in-the-middle protocol-version
2101 rollback in the SSL 2.0 server implementation, which is a bad
2102 idea. (CVE-2005-2969)
2104 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2105 for Information Security, National Institute of Advanced Industrial
2106 Science and Technology [AIST], Japan)]
2108 *) Add two function to clear and return the verify parameter flags.
2111 *) Keep cipherlists sorted in the source instead of sorting them at
2112 runtime, thus removing the need for a lock.
2115 *) Avoid some small subgroup attacks in Diffie-Hellman.
2116 [Nick Mathewson and Ben Laurie]
2118 *) Add functions for well-known primes.
2121 *) Extended Windows CE support.
2122 [Satoshi Nakamura and Andy Polyakov]
2124 *) Initialize SSL_METHOD structures at compile time instead of during
2125 runtime, thus removing the need for a lock.
2128 *) Make PKCS7_decrypt() work even if no certificate is supplied by
2129 attempting to decrypt each encrypted key in turn. Add support to
2133 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
2135 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
2138 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
2141 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
2142 key into the same file any more.
2145 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
2148 *) Add -utf8 command line and config file option to 'ca'.
2149 [Stefan <stf@udoma.org]
2151 *) Removed the macro des_crypt(), as it seems to conflict with some
2152 libraries. Use DES_crypt().
2155 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
2156 involves renaming the source and generated shared-libs for
2157 both. The engines will accept the corrected or legacy ids
2158 ('ncipher' and '4758_cca' respectively) when binding. NB,
2159 this only applies when building 'shared'.
2160 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
2162 *) Add attribute functions to EVP_PKEY structure. Modify
2163 PKCS12_create() to recognize a CSP name attribute and
2164 use it. Make -CSP option work again in pkcs12 utility.
2167 *) Add new functionality to the bn blinding code:
2168 - automatic re-creation of the BN_BLINDING parameters after
2169 a fixed number of uses (currently 32)
2170 - add new function for parameter creation
2171 - introduce flags to control the update behaviour of the
2172 BN_BLINDING parameters
2173 - hide BN_BLINDING structure
2174 Add a second BN_BLINDING slot to the RSA structure to improve
2175 performance when a single RSA object is shared among several
2179 *) Add support for DTLS.
2180 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
2182 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
2183 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
2186 *) Remove buggy and incompletet DH cert support from
2187 ssl/ssl_rsa.c and ssl/s3_both.c
2190 *) Use SHA-1 instead of MD5 as the default digest algorithm for
2191 the apps/openssl applications.
2194 *) Compile clean with "-Wall -Wmissing-prototypes
2195 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
2196 DEBUG_SAFESTACK must also be set.
2199 *) Change ./Configure so that certain algorithms can be disabled by default.
2200 The new counterpiece to "no-xxx" is "enable-xxx".
2202 The patented RC5 and MDC2 algorithms will now be disabled unless
2203 "enable-rc5" and "enable-mdc2", respectively, are specified.
2205 (IDEA remains enabled despite being patented. This is because IDEA
2206 is frequently required for interoperability, and there is no license
2207 fee for non-commercial use. As before, "no-idea" can be used to
2208 avoid this algorithm.)
2212 *) Add processing of proxy certificates (see RFC 3820). This work was
2213 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
2214 EGEE (Enabling Grids for E-science in Europe).
2217 *) RC4 performance overhaul on modern architectures/implementations, such
2218 as Intel P4, IA-64 and AMD64.
2221 *) New utility extract-section.pl. This can be used specify an alternative
2222 section number in a pod file instead of having to treat each file as
2223 a separate case in Makefile. This can be done by adding two lines to the
2226 =for comment openssl_section:XXX
2228 The blank line is mandatory.
2232 *) New arguments -certform, -keyform and -pass for s_client and s_server
2233 to allow alternative format key and certificate files and passphrase
2237 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
2238 update associated structures and add various utility functions.
2240 Add new policy related verify parameters, include policy checking in
2241 standard verify code. Enhance 'smime' application with extra parameters
2242 to support policy checking and print out.
2245 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
2246 Nehemiah processors. These extensions support AES encryption in hardware
2247 as well as RNG (though RNG support is currently disabled).
2248 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
2250 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
2253 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
2254 [Andy Polyakov and a number of other people]
2256 *) Improved PowerPC platform support. Most notably BIGNUM assembler
2257 implementation contributed by IBM.
2258 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
2260 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
2261 exponent rather than 'unsigned long'. There is a corresponding change to
2262 the new 'rsa_keygen' element of the RSA_METHOD structure.
2263 [Jelte Jansen, Geoff Thorpe]
2265 *) Functionality for creating the initial serial number file is now
2266 moved from CA.pl to the 'ca' utility with a new option -create_serial.
2268 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
2269 number file to 1, which is bound to cause problems. To avoid
2270 the problems while respecting compatibility between different 0.9.7
2271 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
2272 CA.pl for serial number initialization. With the new release 0.9.8,
2273 we can fix the problem directly in the 'ca' utility.)
2276 *) Reduced header interdepencies by declaring more opaque objects in
2277 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
2278 give fewer recursive includes, which could break lazy source code - so
2279 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
2280 developers should define this symbol when building and using openssl to
2281 ensure they track the recommended behaviour, interfaces, [etc], but
2282 backwards-compatible behaviour prevails when this isn't defined.
2285 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
2288 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
2289 This will generate a random key of the appropriate length based on the
2290 cipher context. The EVP_CIPHER can provide its own random key generation
2291 routine to support keys of a specific form. This is used in the des and
2292 3des routines to generate a key of the correct parity. Update S/MIME
2293 code to use new functions and hence generate correct parity DES keys.
2294 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
2295 valid (weak or incorrect parity).
2298 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
2299 as looking them up. This is useful when the verified structure may contain
2300 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
2301 present unless the new PKCS7_NO_CRL flag is asserted.
2304 *) Extend ASN1 oid configuration module. It now additionally accepts the
2307 shortName = some long name, 1.2.3.4
2310 *) Reimplemented the BN_CTX implementation. There is now no more static
2311 limitation on the number of variables it can handle nor the depth of the
2312 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
2313 information can now expand as required, and rather than having a single
2314 static array of bignums, BN_CTX now uses a linked-list of such arrays
2315 allowing it to expand on demand whilst maintaining the usefulness of
2316 BN_CTX's "bundling".
2319 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
2320 to allow all RSA operations to function using a single BN_CTX.
2323 *) Preliminary support for certificate policy evaluation and checking. This
2324 is initially intended to pass the tests outlined in "Conformance Testing
2325 of Relying Party Client Certificate Path Processing Logic" v1.07.
2328 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
2329 remained unused and not that useful. A variety of other little bignum
2330 tweaks and fixes have also been made continuing on from the audit (see
2334 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
2335 associated ASN1, EVP and SSL functions and old ASN1 macros.
2338 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
2339 and this should never fail. So the return value from the use of
2340 BN_set_word() (which can fail due to needless expansion) is now deprecated;
2341 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
2344 *) BN_CTX_get() should return zero-valued bignums, providing the same
2345 initialised value as BN_new().
2346 [Geoff Thorpe, suggested by Ulf Möller]
2348 *) Support for inhibitAnyPolicy certificate extension.
2351 *) An audit of the BIGNUM code is underway, for which debugging code is
2352 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
2353 is considered valid when processing BIGNUMs, and causes execution to
2354 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
2355 further steps are taken to deliberately pollute unused data in BIGNUM
2356 structures to try and expose faulty code further on. For now, openssl will
2357 (in its default mode of operation) continue to tolerate the inconsistent
2358 forms that it has tolerated in the past, but authors and packagers should
2359 consider trying openssl and their own applications when compiled with
2360 these debugging symbols defined. It will help highlight potential bugs in
2361 their own code, and will improve the test coverage for OpenSSL itself. At
2362 some point, these tighter rules will become openssl's default to improve
2363 maintainability, though the assert()s and other overheads will remain only
2364 in debugging configurations. See bn.h for more details.
2365 [Geoff Thorpe, Nils Larsch, Ulf Möller]
2367 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
2368 that can only be obtained through BN_CTX_new() (which implicitly
2369 initialises it). The presence of this function only made it possible
2370 to overwrite an existing structure (and cause memory leaks).
2373 *) Because of the callback-based approach for implementing LHASH as a
2374 template type, lh_insert() adds opaque objects to hash-tables and
2375 lh_doall() or lh_doall_arg() are typically used with a destructor callback
2376 to clean up those corresponding objects before destroying the hash table
2377 (and losing the object pointers). So some over-zealous constifications in
2378 LHASH have been relaxed so that lh_insert() does not take (nor store) the
2379 objects as "const" and the lh_doall[_arg] callback wrappers are not
2380 prototyped to have "const" restrictions on the object pointers they are
2381 given (and so aren't required to cast them away any more).
2384 *) The tmdiff.h API was so ugly and minimal that our own timing utility
2385 (speed) prefers to use its own implementation. The two implementations
2386 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
2387 its object type properly exposed (MS_TM) instead of casting to/from "char
2388 *". This may still change yet if someone realises MS_TM and "ms_time_***"
2389 aren't necessarily the greatest nomenclatures - but this is what was used
2390 internally to the implementation so I've used that for now.
2393 *) Ensure that deprecated functions do not get compiled when
2394 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
2395 the self-tests were still using deprecated key-generation functions so
2396 these have been updated also.
2399 *) Reorganise PKCS#7 code to separate the digest location functionality
2400 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
2401 New function PKCS7_set_digest() to set the digest type for PKCS#7
2402 digestedData type. Add additional code to correctly generate the
2403 digestedData type and add support for this type in PKCS7 initialization
2407 *) New function PKCS7_set0_type_other() this initializes a PKCS7
2408 structure of type "other".
2411 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
2412 sure the loop does correctly stop and breaking ("division by zero")
2413 modulus operations are not performed. The (pre-generated) prime
2414 table crypto/bn/bn_prime.h was already correct, but it could not be
2415 re-generated on some platforms because of the "division by zero"
2416 situation in the script.
2417 [Ralf S. Engelschall]
2419 *) Update support for ECC-based TLS ciphersuites according to
2420 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
2421 SHA-1 now is only used for "small" curves (where the
2422 representation of a field element takes up to 24 bytes); for
2423 larger curves, the field element resulting from ECDH is directly
2424 used as premaster secret.
2425 [Douglas Stebila (Sun Microsystems Laboratories)]
2427 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
2428 curve secp160r1 to the tests.
2429 [Douglas Stebila (Sun Microsystems Laboratories)]
2431 *) Add the possibility to load symbols globally with DSO.
2432 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
2434 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
2435 control of the error stack.
2438 *) Add support for STORE in ENGINE.
2441 *) Add the STORE type. The intention is to provide a common interface
2442 to certificate and key stores, be they simple file-based stores, or
2443 HSM-type store, or LDAP stores, or...
2444 NOTE: The code is currently UNTESTED and isn't really used anywhere.
2447 *) Add a generic structure called OPENSSL_ITEM. This can be used to
2448 pass a list of arguments to any function as well as provide a way
2449 for a function to pass data back to the caller.
2452 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
2453 works like BUF_strdup() but can be used to duplicate a portion of
2454 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
2458 *) Add the function sk_find_ex() which works like sk_find(), but will
2459 return an index to an element even if an exact match couldn't be
2460 found. The index is guaranteed to point at the element where the
2461 searched-for key would be inserted to preserve sorting order.
2464 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
2465 takes an extra flags argument for optional functionality. Currently,
2466 the following flags are defined:
2468 OBJ_BSEARCH_VALUE_ON_NOMATCH
2469 This one gets OBJ_bsearch_ex() to return a pointer to the first
2470 element where the comparing function returns a negative or zero
2473 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
2474 This one gets OBJ_bsearch_ex() to return a pointer to the first
2475 element where the comparing function returns zero. This is useful
2476 if there are more than one element where the comparing function
2480 *) Make it possible to create self-signed certificates with 'openssl ca'
2481 in such a way that the self-signed certificate becomes part of the
2482 CA database and uses the same mechanisms for serial number generation
2483 as all other certificate signing. The new flag '-selfsign' enables
2484 this functionality. Adapt CA.sh and CA.pl.in.
2487 *) Add functionality to check the public key of a certificate request
2488 against a given private. This is useful to check that a certificate
2489 request can be signed by that key (self-signing).
2492 *) Make it possible to have multiple active certificates with the same
2493 subject in the CA index file. This is done only if the keyword
2494 'unique_subject' is set to 'no' in the main CA section (default
2495 if 'CA_default') of the configuration file. The value is saved
2496 with the database itself in a separate index attribute file,
2497 named like the index file with '.attr' appended to the name.
2500 *) Generate muti valued AVAs using '+' notation in config files for
2504 *) Support for nameConstraints certificate extension.
2507 *) Support for policyConstraints certificate extension.
2510 *) Support for policyMappings certificate extension.
2513 *) Make sure the default DSA_METHOD implementation only uses its
2514 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
2515 and change its own handlers to be NULL so as to remove unnecessary
2516 indirection. This lets alternative implementations fallback to the
2517 default implementation more easily.
2520 *) Support for directoryName in GeneralName related extensions
2524 *) Make it possible to link applications using Makefile.shared.
2525 Make that possible even when linking against static libraries!
2528 *) Support for single pass processing for S/MIME signing. This now
2529 means that S/MIME signing can be done from a pipe, in addition
2530 cleartext signing (multipart/signed type) is effectively streaming
2531 and the signed data does not need to be all held in memory.
2533 This is done with a new flag PKCS7_STREAM. When this flag is set
2534 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
2535 is done after the data is output (and digests calculated) in
2536 SMIME_write_PKCS7().
2539 *) Add full support for -rpath/-R, both in shared libraries and
2540 applications, at least on the platforms where it's known how
2544 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
2545 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
2546 will now compute a table of multiples of the generator that
2547 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
2548 faster (notably in the case of a single point multiplication,
2549 scalar * generator).
2550 [Nils Larsch, Bodo Moeller]
2552 *) IPv6 support for certificate extensions. The various extensions
2553 which use the IP:a.b.c.d can now take IPv6 addresses using the
2554 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
2558 *) Added an ENGINE that implements RSA by performing private key
2559 exponentiations with the GMP library. The conversions to and from
2560 GMP's mpz_t format aren't optimised nor are any montgomery forms
2561 cached, and on x86 it appears OpenSSL's own performance has caught up.
2562 However there are likely to be other architectures where GMP could
2563 provide a boost. This ENGINE is not built in by default, but it can be
2564 specified at Configure time and should be accompanied by the necessary
2565 linker additions, eg;
2566 ./config -DOPENSSL_USE_GMP -lgmp
2569 *) "openssl engine" will not display ENGINE/DSO load failure errors when
2570 testing availability of engines with "-t" - the old behaviour is
2571 produced by increasing the feature's verbosity with "-tt".
2574 *) ECDSA routines: under certain error conditions uninitialized BN objects
2575 could be freed. Solution: make sure initialization is performed early
2576 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
2580 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
2581 and DH_METHOD (eg. by ENGINE implementations) to override the normal
2582 software implementations. For DSA and DH, parameter generation can
2583 also be overriden by providing the appropriate method callbacks.
2586 *) Change the "progress" mechanism used in key-generation and
2587 primality testing to functions that take a new BN_GENCB pointer in
2588 place of callback/argument pairs. The new API functions have "_ex"
2589 postfixes and the older functions are reimplemented as wrappers for
2590 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
2591 declarations of the old functions to help (graceful) attempts to
2592 migrate to the new functions. Also, the new key-generation API
2593 functions operate on a caller-supplied key-structure and return
2594 success/failure rather than returning a key or NULL - this is to
2595 help make "keygen" another member function of RSA_METHOD etc.
2597 Example for using the new callback interface:
2599 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
2603 BN_GENCB_set(&my_cb, my_callback, my_arg);
2605 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
2606 /* For the meaning of a, b in calls to my_callback(), see the
2607 * documentation of the function that calls the callback.
2608 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
2609 * my_callback should return 1 if it wants BN_is_prime_ex()
2610 * to continue, or 0 to stop.
2615 *) Change the ZLIB compression method to be stateful, and make it
2616 available to TLS with the number defined in
2617 draft-ietf-tls-compression-04.txt.
2620 *) Add the ASN.1 structures and functions for CertificatePair, which
2621 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
2623 CertificatePair ::= SEQUENCE {
2624 forward [0] Certificate OPTIONAL,
2625 reverse [1] Certificate OPTIONAL,
2626 -- at least one of the pair shall be present -- }
2628 Also implement the PEM functions to read and write certificate
2629 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
2631 This needed to be defined, mostly for the sake of the LDAP
2632 attribute crossCertificatePair, but may prove useful elsewhere as
2636 *) Make it possible to inhibit symlinking of shared libraries in
2637 Makefile.shared, for Cygwin's sake.
2640 *) Extend the BIGNUM API by creating a function
2641 void BN_set_negative(BIGNUM *a, int neg);
2642 and a macro that behave like
2643 int BN_is_negative(const BIGNUM *a);
2645 to avoid the need to access 'a->neg' directly in applications.
2648 *) Implement fast modular reduction for pseudo-Mersenne primes
2649 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
2650 EC_GROUP_new_curve_GFp() will now automatically use this
2652 [Nils Larsch <nla@trustcenter.de>]
2654 *) Add new lock type (CRYPTO_LOCK_BN).
2657 *) Change the ENGINE framework to automatically load engines
2658 dynamically from specific directories unless they could be
2659 found to already be built in or loaded. Move all the
2660 current engines except for the cryptodev one to a new
2662 The engines in engines/ are built as shared libraries if
2663 the "shared" options was given to ./Configure or ./config.
2664 Otherwise, they are inserted in libcrypto.a.
2665 /usr/local/ssl/engines is the default directory for dynamic
2666 engines, but that can be overriden at configure time through
2667 the usual use of --prefix and/or --openssldir, and at run
2668 time with the environment variable OPENSSL_ENGINES.
2669 [Geoff Thorpe and Richard Levitte]
2671 *) Add Makefile.shared, a helper makefile to build shared
2672 libraries. Addapt Makefile.org.
2675 *) Add version info to Win32 DLLs.
2676 [Peter 'Luna' Runestig" <peter@runestig.com>]
2678 *) Add new 'medium level' PKCS#12 API. Certificates and keys
2679 can be added using this API to created arbitrary PKCS#12
2680 files while avoiding the low level API.
2682 New options to PKCS12_create(), key or cert can be NULL and
2683 will then be omitted from the output file. The encryption
2684 algorithm NIDs can be set to -1 for no encryption, the mac
2685 iteration count can be set to 0 to omit the mac.
2687 Enhance pkcs12 utility by making the -nokeys and -nocerts
2688 options work when creating a PKCS#12 file. New option -nomac
2689 to omit the mac, NONE can be set for an encryption algorithm.
2690 New code is modified to use the enhanced PKCS12_create()
2691 instead of the low level API.
2694 *) Extend ASN1 encoder to support indefinite length constructed
2695 encoding. This can output sequences tags and octet strings in
2696 this form. Modify pk7_asn1.c to support indefinite length
2697 encoding. This is experimental and needs additional code to
2698 be useful, such as an ASN1 bio and some enhanced streaming
2701 Extend template encode functionality so that tagging is passed
2702 down to the template encoder.
2705 *) Let 'openssl req' fail if an argument to '-newkey' is not
2706 recognized instead of using RSA as a default.
2709 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
2710 As these are not official, they are not included in "ALL";
2711 the "ECCdraft" ciphersuite group alias can be used to select them.
2712 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
2714 *) Add ECDH engine support.
2715 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
2717 *) Add ECDH in new directory crypto/ecdh/.
2718 [Douglas Stebila (Sun Microsystems Laboratories)]
2720 *) Let BN_rand_range() abort with an error after 100 iterations
2721 without success (which indicates a broken PRNG).
2724 *) Change BN_mod_sqrt() so that it verifies that the input value
2725 is really the square of the return value. (Previously,
2726 BN_mod_sqrt would show GIGO behaviour.)
2729 *) Add named elliptic curves over binary fields from X9.62, SECG,
2730 and WAP/WTLS; add OIDs that were still missing.
2732 [Sheueling Chang Shantz and Douglas Stebila
2733 (Sun Microsystems Laboratories)]
2735 *) Extend the EC library for elliptic curves over binary fields
2736 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
2739 EC_GF2m_simple_method
2743 EC_GROUP_new_curve_GF2m
2744 EC_GROUP_set_curve_GF2m
2745 EC_GROUP_get_curve_GF2m
2746 EC_POINT_set_affine_coordinates_GF2m
2747 EC_POINT_get_affine_coordinates_GF2m
2748 EC_POINT_set_compressed_coordinates_GF2m
2750 Point compression for binary fields is disabled by default for
2751 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
2754 As binary polynomials are represented as BIGNUMs, various members
2755 of the EC_GROUP and EC_POINT data structures can be shared
2756 between the implementations for prime fields and binary fields;
2757 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
2758 are essentially identical to their ..._GFp counterparts.
2759 (For simplicity, the '..._GFp' prefix has been dropped from
2760 various internal method names.)
2762 An internal 'field_div' method (similar to 'field_mul' and
2763 'field_sqr') has been added; this is used only for binary fields.
2765 [Sheueling Chang Shantz and Douglas Stebila
2766 (Sun Microsystems Laboratories)]
2768 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
2769 through methods ('mul', 'precompute_mult').
2771 The generic implementations (now internally called 'ec_wNAF_mul'
2772 and 'ec_wNAF_precomputed_mult') remain the default if these
2773 methods are undefined.
2775 [Sheueling Chang Shantz and Douglas Stebila
2776 (Sun Microsystems Laboratories)]
2778 *) New function EC_GROUP_get_degree, which is defined through
2779 EC_METHOD. For curves over prime fields, this returns the bit
2780 length of the modulus.
2782 [Sheueling Chang Shantz and Douglas Stebila
2783 (Sun Microsystems Laboratories)]
2785 *) New functions EC_GROUP_dup, EC_POINT_dup.
2786 (These simply call ..._new and ..._copy).
2788 [Sheueling Chang Shantz and Douglas Stebila
2789 (Sun Microsystems Laboratories)]
2791 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
2792 Polynomials are represented as BIGNUMs (where the sign bit is not
2793 used) in the following functions [macros]:
2796 BN_GF2m_sub [= BN_GF2m_add]
2797 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
2798 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
2799 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
2801 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
2802 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
2803 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
2804 BN_GF2m_cmp [= BN_ucmp]
2806 (Note that only the 'mod' functions are actually for fields GF(2^m).
2807 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
2809 For some functions, an the irreducible polynomial defining a
2810 field can be given as an 'unsigned int[]' with strictly
2811 decreasing elements giving the indices of those bits that are set;
2812 i.e., p[] represents the polynomial
2813 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
2815 p[0] > p[1] > ... > p[k] = 0.
2816 This applies to the following functions:
2821 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
2822 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
2824 BN_GF2m_mod_sqrt_arr
2825 BN_GF2m_mod_solve_quad_arr
2829 Conversion can be performed by the following functions:
2834 bntest.c has additional tests for binary polynomial arithmetic.
2836 Two implementations for BN_GF2m_mod_div() are available.
2837 The default algorithm simply uses BN_GF2m_mod_inv() and
2838 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
2839 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
2840 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
2842 [Sheueling Chang Shantz and Douglas Stebila
2843 (Sun Microsystems Laboratories)]
2845 *) Add new error code 'ERR_R_DISABLED' that can be used when some
2846 functionality is disabled at compile-time.
2847 [Douglas Stebila <douglas.stebila@sun.com>]
2849 *) Change default behaviour of 'openssl asn1parse' so that more
2850 information is visible when viewing, e.g., a certificate:
2852 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
2853 mode the content of non-printable OCTET STRINGs is output in a
2854 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
2855 avoid the appearance of a printable string.
2856 [Nils Larsch <nla@trustcenter.de>]
2858 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
2860 EC_GROUP_set_asn1_flag()
2861 EC_GROUP_get_asn1_flag()
2862 EC_GROUP_set_point_conversion_form()
2863 EC_GROUP_get_point_conversion_form()
2864 These control ASN1 encoding details:
2865 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
2866 has been set to OPENSSL_EC_NAMED_CURVE.
2867 - Points are encoded in uncompressed form by default; options for
2868 asn1_for are as for point2oct, namely
2869 POINT_CONVERSION_COMPRESSED
2870 POINT_CONVERSION_UNCOMPRESSED
2871 POINT_CONVERSION_HYBRID
2873 Also add 'seed' and 'seed_len' members to EC_GROUP with access
2876 EC_GROUP_get0_seed()
2877 EC_GROUP_get_seed_len()
2878 This is used only for ASN1 purposes (so far).
2879 [Nils Larsch <nla@trustcenter.de>]
2881 *) Add 'field_type' member to EC_METHOD, which holds the NID
2882 of the appropriate field type OID. The new function
2883 EC_METHOD_get_field_type() returns this value.
2884 [Nils Larsch <nla@trustcenter.de>]
2889 EC_POINT_point2hex()
2890 EC_POINT_hex2point()
2891 providing useful interfaces to EC_POINT_point2oct() and
2892 EC_POINT_oct2point().
2893 [Nils Larsch <nla@trustcenter.de>]
2895 *) Change internals of the EC library so that the functions
2896 EC_GROUP_set_generator()
2897 EC_GROUP_get_generator()
2898 EC_GROUP_get_order()
2899 EC_GROUP_get_cofactor()
2900 are implemented directly in crypto/ec/ec_lib.c and not dispatched
2901 to methods, which would lead to unnecessary code duplication when
2902 adding different types of curves.
2903 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
2905 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
2906 arithmetic, and such that modified wNAFs are generated
2907 (which avoid length expansion in many cases).
2910 *) Add a function EC_GROUP_check_discriminant() (defined via
2911 EC_METHOD) that verifies that the curve discriminant is non-zero.
2913 Add a function EC_GROUP_check() that makes some sanity tests
2914 on a EC_GROUP, its generator and order. This includes
2915 EC_GROUP_check_discriminant().
2916 [Nils Larsch <nla@trustcenter.de>]
2918 *) Add ECDSA in new directory crypto/ecdsa/.
2920 Add applications 'openssl ecparam' and 'openssl ecdsa'
2921 (these are based on 'openssl dsaparam' and 'openssl dsa').
2923 ECDSA support is also included in various other files across the
2924 library. Most notably,
2925 - 'openssl req' now has a '-newkey ecdsa:file' option;
2926 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
2927 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
2928 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
2929 them suitable for ECDSA where domain parameters must be
2930 extracted before the specific public key;
2931 - ECDSA engine support has been added.
2932 [Nils Larsch <nla@trustcenter.de>]
2934 *) Include some named elliptic curves, and add OIDs from X9.62,
2935 SECG, and WAP/WTLS. Each curve can be obtained from the new
2937 EC_GROUP_new_by_curve_name(),
2938 and the list of available named curves can be obtained with
2939 EC_get_builtin_curves().
2940 Also add a 'curve_name' member to EC_GROUP objects, which can be
2942 EC_GROUP_set_curve_name()
2943 EC_GROUP_get_curve_name()
2944 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
2946 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
2947 was actually never needed) and in BN_mul(). The removal in BN_mul()
2948 required a small change in bn_mul_part_recursive() and the addition
2949 of the functions bn_cmp_part_words(), bn_sub_part_words() and
2950 bn_add_part_words(), which do the same thing as bn_cmp_words(),
2951 bn_sub_words() and bn_add_words() except they take arrays with
2955 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
2957 *) Cleanse PEM buffers before freeing them since they may contain
2959 [Benjamin Bennett <ben@psc.edu>]
2961 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2962 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2963 authentication-only ciphersuites.
2966 *) Since AES128 and AES256 share a single mask bit in the logic of
2967 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2968 kludge to work properly if AES128 is available and AES256 isn't.
2971 *) Expand security boundary to match 1.1.1 module.
2974 *) Remove redundant features: hash file source, editing of test vectors
2975 modify fipsld to use external fips_premain.c signature.
2978 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
2979 run algorithm test programs.
2982 *) Make algorithm test programs more tolerant of whitespace.
2985 *) Have SSL/TLS server implementation tolerate "mismatched" record
2986 protocol version while receiving ClientHello even if the
2987 ClientHello is fragmented. (The server can't insist on the
2988 particular protocol version it has chosen before the ServerHello
2989 message has informed the client about his choice.)
2992 *) Load error codes if they are not already present instead of using a
2993 static variable. This allows them to be cleanly unloaded and reloaded.
2996 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
2998 *) Introduce limits to prevent malicious keys being able to
2999 cause a denial of service. (CVE-2006-2940)
3000 [Steve Henson, Bodo Moeller]
3002 *) Fix ASN.1 parsing of certain invalid structures that can result
3003 in a denial of service. (CVE-2006-2937) [Steve Henson]
3005 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
3006 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
3008 *) Fix SSL client code which could crash if connecting to a
3009 malicious SSLv2 server. (CVE-2006-4343)
3010 [Tavis Ormandy and Will Drewry, Google Security Team]
3012 *) Change ciphersuite string processing so that an explicit
3013 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
3014 will no longer include "AES128-SHA"), and any other similar
3015 ciphersuite (same bitmap) from *other* protocol versions (so that
3016 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
3017 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
3018 changes from 0.9.8b and 0.9.8d.
3021 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
3023 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
3024 (CVE-2006-4339) [Ben Laurie and Google Security Team]
3026 *) Change the Unix randomness entropy gathering to use poll() when
3027 possible instead of select(), since the latter has some
3028 undesirable limitations.
3029 [Darryl Miles via Richard Levitte and Bodo Moeller]
3031 *) Disable rogue ciphersuites:
3033 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
3034 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
3035 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
3037 The latter two were purportedly from
3038 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
3041 Also deactive the remaining ciphersuites from
3042 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
3043 unofficial, and the ID has long expired.
3046 *) Fix RSA blinding Heisenbug (problems sometimes occured on
3047 dual-core machines) and other potential thread-safety issues.
3050 Changes between 0.9.7i and 0.9.7j [04 May 2006]
3052 *) Adapt fipsld and the build system to link against the validated FIPS
3053 module in FIPS mode.
3056 *) Fixes for VC++ 2005 build under Windows.
3059 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
3060 from a Windows bash shell such as MSYS. It is autodetected from the
3061 "config" script when run from a VC++ environment. Modify standard VC++
3062 build to use fipscanister.o from the GNU make build.
3065 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
3067 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
3068 The value now differs depending on if you build for FIPS or not.
3069 BEWARE! A program linked with a shared FIPSed libcrypto can't be
3070 safely run with a non-FIPSed libcrypto, as it may crash because of
3071 the difference induced by this change.
3074 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
3076 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
3077 (part of SSL_OP_ALL). This option used to disable the
3078 countermeasure against man-in-the-middle protocol-version
3079 rollback in the SSL 2.0 server implementation, which is a bad
3080 idea. (CVE-2005-2969)
3082 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
3083 for Information Security, National Institute of Advanced Industrial
3084 Science and Technology [AIST], Japan)]
3086 *) Minimal support for X9.31 signatures and PSS padding modes. This is
3087 mainly for FIPS compliance and not fully integrated at this stage.
3090 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
3091 the exponentiation using a fixed-length exponent. (Otherwise,
3092 the information leaked through timing could expose the secret key
3093 after many signatures; cf. Bleichenbacher's attack on DSA with
3097 *) Make a new fixed-window mod_exp implementation the default for
3098 RSA, DSA, and DH private-key operations so that the sequence of
3099 squares and multiplies and the memory access pattern are
3100 independent of the particular secret key. This will mitigate
3101 cache-timing and potential related attacks.
3103 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
3104 and this is automatically used by BN_mod_exp_mont() if the new flag
3105 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
3106 will use this BN flag for private exponents unless the flag
3107 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
3108 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
3110 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
3112 *) Change the client implementation for SSLv23_method() and
3113 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
3114 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
3115 (Previously, the SSL 2.0 backwards compatible Client Hello
3116 message format would be used even with SSL_OP_NO_SSLv2.)
3119 *) Add support for smime-type MIME parameter in S/MIME messages which some
3123 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
3124 a threadsafe manner. Modify rsa code to use new function and add calls
3125 to dsa and dh code (which had race conditions before).
3128 *) Include the fixed error library code in the C error file definitions
3129 instead of fixing them up at runtime. This keeps the error code
3130 structures constant.
3133 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
3135 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
3138 *) Fixes for newer kerberos headers. NB: the casts are needed because
3139 the 'length' field is signed on one version and unsigned on another
3140 with no (?) obvious way to tell the difference, without these VC++
3141 complains. Also the "definition" of FAR (blank) is no longer included
3142 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
3143 some needed definitions.
3146 *) Undo Cygwin change.
3149 *) Added support for proxy certificates according to RFC 3820.
3150 Because they may be a security thread to unaware applications,
3151 they must be explicitely allowed in run-time. See
3152 docs/HOWTO/proxy_certificates.txt for further information.
3155 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
3157 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
3158 server and client random values. Previously
3159 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
3160 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
3162 This change has negligible security impact because:
3164 1. Server and client random values still have 24 bytes of pseudo random
3167 2. Server and client random values are sent in the clear in the initial
3170 3. The master secret is derived using the premaster secret (48 bytes in
3171 size for static RSA ciphersuites) as well as client server and random
3174 The OpenSSL team would like to thank the UK NISCC for bringing this issue
3177 [Stephen Henson, reported by UK NISCC]
3179 *) Use Windows randomness collection on Cygwin.
3182 *) Fix hang in EGD/PRNGD query when communication socket is closed
3183 prematurely by EGD/PRNGD.
3184 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
3186 *) Prompt for pass phrases when appropriate for PKCS12 input format.
3189 *) Back-port of selected performance improvements from development
3190 branch, as well as improved support for PowerPC platforms.
3193 *) Add lots of checks for memory allocation failure, error codes to indicate
3194 failure and freeing up memory if a failure occurs.
3195 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
3197 *) Add new -passin argument to dgst.
3200 *) Perform some character comparisons of different types in X509_NAME_cmp:
3201 this is needed for some certificates that reencode DNs into UTF8Strings
3202 (in violation of RFC3280) and can't or wont issue name rollover
3206 *) Make an explicit check during certificate validation to see that
3207 the CA setting in each certificate on the chain is correct. As a
3208 side effect always do the following basic checks on extensions,
3209 not just when there's an associated purpose to the check:
3211 - if there is an unhandled critical extension (unless the user
3212 has chosen to ignore this fault)
3213 - if the path length has been exceeded (if one is set at all)
3214 - that certain extensions fit the associated purpose (if one has
3218 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
3220 *) Avoid a race condition when CRLs are checked in a multi threaded
3221 environment. This would happen due to the reordering of the revoked
3222 entries during signature checking and serial number lookup. Now the
3223 encoding is cached and the serial number sort performed under a lock.
3224 Add new STACK function sk_is_sorted().
3227 *) Add Delta CRL to the extension code.
3230 *) Various fixes to s3_pkt.c so alerts are sent properly.
3231 [David Holmes <d.holmes@f5.com>]
3233 *) Reduce the chances of duplicate issuer name and serial numbers (in
3234 violation of RFC3280) using the OpenSSL certificate creation utilities.
3235 This is done by creating a random 64 bit value for the initial serial
3236 number when a serial number file is created or when a self signed
3237 certificate is created using 'openssl req -x509'. The initial serial
3238 number file is created using 'openssl x509 -next_serial' in CA.pl
3239 rather than being initialized to 1.
3242 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
3244 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
3245 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
3246 [Joe Orton, Steve Henson]
3248 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
3250 [Joe Orton, Steve Henson]
3252 *) Make it possible to have multiple active certificates with the same
3253 subject in the CA index file. This is done only if the keyword
3254 'unique_subject' is set to 'no' in the main CA section (default
3255 if 'CA_default') of the configuration file. The value is saved
3256 with the database itself in a separate index attribute file,
3257 named like the index file with '.attr' appended to the name.
3260 *) X509 verify fixes. Disable broken certificate workarounds when
3261 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
3262 keyUsage extension present. Don't accept CRLs with unhandled critical
3263 extensions: since verify currently doesn't process CRL extensions this
3264 rejects a CRL with *any* critical extensions. Add new verify error codes
3268 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
3269 A clarification of RFC2560 will require the use of OCTET STRINGs and
3270 some implementations cannot handle the current raw format. Since OpenSSL
3271 copies and compares OCSP nonces as opaque blobs without any attempt at
3272 parsing them this should not create any compatibility issues.
3275 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
3276 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
3277 this HMAC (and other) operations are several times slower than OpenSSL
3281 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
3282 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3284 *) Use the correct content when signing type "other".
3287 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
3289 *) Fix various bugs revealed by running the NISCC test suite:
3291 Stop out of bounds reads in the ASN1 code when presented with
3292 invalid tags (CVE-2003-0543 and CVE-2003-0544).
3294 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
3296 If verify callback ignores invalid public key errors don't try to check
3297 certificate signature with the NULL public key.
3301 *) New -ignore_err option in ocsp application to stop the server
3302 exiting on the first error in a request.
3305 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
3306 if the server requested one: as stated in TLS 1.0 and SSL 3.0
3310 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
3311 extra data after the compression methods not only for TLS 1.0
3312 but also for SSL 3.0 (as required by the specification).
3313 [Bodo Moeller; problem pointed out by Matthias Loepfe]
3315 *) Change X509_certificate_type() to mark the key as exported/exportable
3316 when it's 512 *bits* long, not 512 bytes.
3319 *) Change AES_cbc_encrypt() so it outputs exact multiple of
3320 blocks during encryption.
3323 *) Various fixes to base64 BIO and non blocking I/O. On write
3324 flushes were not handled properly if the BIO retried. On read
3325 data was not being buffered properly and had various logic bugs.
3326 This also affects blocking I/O when the data being decoded is a
3330 *) Various S/MIME bugfixes and compatibility changes:
3331 output correct application/pkcs7 MIME type if
3332 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
3333 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
3334 of files as .eml work). Correctly handle very long lines in MIME
3338 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
3340 *) Countermeasure against the Klima-Pokorny-Rosa extension of
3341 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
3342 a protocol version number mismatch like a decryption error
3343 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
3346 *) Turn on RSA blinding by default in the default implementation
3347 to avoid a timing attack. Applications that don't want it can call
3348 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
3349 They would be ill-advised to do so in most cases.
3350 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
3352 *) Change RSA blinding code so that it works when the PRNG is not
3353 seeded (in this case, the secret RSA exponent is abused as
3354 an unpredictable seed -- if it is not unpredictable, there
3355 is no point in blinding anyway). Make RSA blinding thread-safe
3356 by remembering the creator's thread ID in rsa->blinding and
3357 having all other threads use local one-time blinding factors
3358 (this requires more computation than sharing rsa->blinding, but
3359 avoids excessive locking; and if an RSA object is not shared
3360 between threads, blinding will still be very fast).
3363 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
3364 ENGINE as defaults for all supported algorithms irrespective of
3365 the 'flags' parameter. 'flags' is now honoured, so applications
3366 should make sure they are passing it correctly.
3369 *) Target "mingw" now allows native Windows code to be generated in
3370 the Cygwin environment as well as with the MinGW compiler.
3373 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
3375 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
3376 via timing by performing a MAC computation even if incorrrect
3377 block cipher padding has been found. This is a countermeasure
3378 against active attacks where the attacker has to distinguish
3379 between bad padding and a MAC verification error. (CVE-2003-0078)
3381 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
3382 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
3383 Martin Vuagnoux (EPFL, Ilion)]
3385 *) Make the no-err option work as intended. The intention with no-err
3386 is not to have the whole error stack handling routines removed from
3387 libcrypto, it's only intended to remove all the function name and
3388 reason texts, thereby removing some of the footprint that may not
3389 be interesting if those errors aren't displayed anyway.
3391 NOTE: it's still possible for any application or module to have it's
3392 own set of error texts inserted. The routines are there, just not
3393 used by default when no-err is given.
3396 *) Add support for FreeBSD on IA64.
3397 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
3399 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
3400 Kerberos function mit_des_cbc_cksum(). Before this change,
3401 the value returned by DES_cbc_cksum() was like the one from
3402 mit_des_cbc_cksum(), except the bytes were swapped.
3403 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
3405 *) Allow an application to disable the automatic SSL chain building.
3406 Before this a rather primitive chain build was always performed in
3407 ssl3_output_cert_chain(): an application had no way to send the
3408 correct chain if the automatic operation produced an incorrect result.
3410 Now the chain builder is disabled if either:
3412 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
3414 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
3416 The reasoning behind this is that an application would not want the
3417 auto chain building to take place if extra chain certificates are
3418 present and it might also want a means of sending no additional
3419 certificates (for example the chain has two certificates and the
3423 *) Add the possibility to build without the ENGINE framework.
3424 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3426 *) Under Win32 gmtime() can return NULL: check return value in
3427 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
3430 *) DSA routines: under certain error conditions uninitialized BN objects
3431 could be freed. Solution: make sure initialization is performed early
3432 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
3433 Nils Larsch <nla@trustcenter.de> via PR#459)
3436 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
3437 checked on reconnect on the client side, therefore session resumption
3438 could still fail with a "ssl session id is different" error. This
3439 behaviour is masked when SSL_OP_ALL is used due to
3440 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
3441 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3442 followup to PR #377.
3445 *) IA-32 assembler support enhancements: unified ELF targets, support
3446 for SCO/Caldera platforms, fix for Cygwin shared build.
3449 *) Add support for FreeBSD on sparc64. As a consequence, support for
3450 FreeBSD on non-x86 processors is separate from x86 processors on
3451 the config script, much like the NetBSD support.
3452 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
3454 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
3456 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
3459 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
3460 code (06) was taken as the first octet of the session ID and the last
3461 octet was ignored consequently. As a result SSLv2 client side session
3462 caching could not have worked due to the session ID mismatch between
3464 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3468 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
3469 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
3473 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
3474 seems that in spite of existing for more than a year, many application
3475 author have done nothing to provide the necessary callbacks, which
3476 means that this particular engine will not work properly anywhere.
3477 This is a very unfortunate situation which forces us, in the name
3478 of usability, to give the hw_ncipher.c a static lock, which is part
3480 NOTE: This is for the 0.9.7 series ONLY. This hack will never
3481 appear in 0.9.8 or later. We EXPECT application authors to have
3482 dealt properly with this when 0.9.8 is released (unless we actually
3483 make such changes in the libcrypto locking code that changes will
3484 have to be made anyway).
3487 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
3488 octets have been read, EOF or an error occurs. Without this change
3489 some truncated ASN1 structures will not produce an error.
3492 *) Disable Heimdal support, since it hasn't been fully implemented.
3493 Still give the possibility to force the use of Heimdal, but with
3494 warnings and a request that patches get sent to openssl-dev.
3497 *) Add the VC-CE target, introduce the WINCE sysname, and add
3498 INSTALL.WCE and appropriate conditionals to make it build.
3499 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3501 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
3502 cygssl-x.y.z.dll, where x, y and z are the major, minor and
3503 edit numbers of the version.
3504 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
3506 *) Introduce safe string copy and catenation functions
3507 (BUF_strlcpy() and BUF_strlcat()).
3508 [Ben Laurie (CHATS) and Richard Levitte]
3510 *) Avoid using fixed-size buffers for one-line DNs.
3511 [Ben Laurie (CHATS)]
3513 *) Add BUF_MEM_grow_clean() to avoid information leakage when
3514 resizing buffers containing secrets, and use where appropriate.
3515 [Ben Laurie (CHATS)]
3517 *) Avoid using fixed size buffers for configuration file location.
3518 [Ben Laurie (CHATS)]
3520 *) Avoid filename truncation for various CA files.
3521 [Ben Laurie (CHATS)]
3523 *) Use sizeof in preference to magic numbers.
3524 [Ben Laurie (CHATS)]
3526 *) Avoid filename truncation in cert requests.
3527 [Ben Laurie (CHATS)]
3529 *) Add assertions to check for (supposedly impossible) buffer
3531 [Ben Laurie (CHATS)]
3533 *) Don't cache truncated DNS entries in the local cache (this could
3534 potentially lead to a spoofing attack).
3535 [Ben Laurie (CHATS)]
3537 *) Fix various buffers to be large enough for hex/decimal
3538 representations in a platform independent manner.
3539 [Ben Laurie (CHATS)]
3541 *) Add CRYPTO_realloc_clean() to avoid information leakage when
3542 resizing buffers containing secrets, and use where appropriate.
3543 [Ben Laurie (CHATS)]
3545 *) Add BIO_indent() to avoid much slightly worrying code to do
3547 [Ben Laurie (CHATS)]
3549 *) Convert sprintf()/BIO_puts() to BIO_printf().
3550 [Ben Laurie (CHATS)]
3552 *) buffer_gets() could terminate with the buffer only half
3554 [Ben Laurie (CHATS)]
3556 *) Add assertions to prevent user-supplied crypto functions from
3557 overflowing internal buffers by having large block sizes, etc.
3558 [Ben Laurie (CHATS)]
3560 *) New OPENSSL_assert() macro (similar to assert(), but enabled
3562 [Ben Laurie (CHATS)]
3564 *) Eliminate unused copy of key in RC4.
3565 [Ben Laurie (CHATS)]
3567 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
3568 [Ben Laurie (CHATS)]
3570 *) Fix off-by-one error in EGD path.
3571 [Ben Laurie (CHATS)]
3573 *) If RANDFILE path is too long, ignore instead of truncating.
3574 [Ben Laurie (CHATS)]
3576 *) Eliminate unused and incorrectly sized X.509 structure
3578 [Ben Laurie (CHATS)]
3580 *) Eliminate unused and dangerous function knumber().
3581 [Ben Laurie (CHATS)]
3583 *) Eliminate unused and dangerous structure, KSSL_ERR.
3584 [Ben Laurie (CHATS)]
3586 *) Protect against overlong session ID context length in an encoded
3587 session object. Since these are local, this does not appear to be
3589 [Ben Laurie (CHATS)]
3591 *) Change from security patch (see 0.9.6e below) that did not affect
3592 the 0.9.6 release series:
3594 Remote buffer overflow in SSL3 protocol - an attacker could
3595 supply an oversized master key in Kerberos-enabled versions.
3597 [Ben Laurie (CHATS)]
3599 *) Change the SSL kerb5 codes to match RFC 2712.
3602 *) Make -nameopt work fully for req and add -reqopt switch.
3603 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
3605 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
3606 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
3608 *) Make sure tests can be performed even if the corresponding algorithms
3609 have been removed entirely. This was also the last step to make
3610 OpenSSL compilable with DJGPP under all reasonable conditions.
3611 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
3613 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
3614 to allow version independent disabling of normally unselected ciphers,
3615 which may be activated as a side-effect of selecting a single cipher.
3617 (E.g., cipher list string "RSA" enables ciphersuites that are left
3618 out of "ALL" because they do not provide symmetric encryption.
3619 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
3620 [Lutz Jaenicke, Bodo Moeller]
3622 *) Add appropriate support for separate platform-dependent build
3623 directories. The recommended way to make a platform-dependent
3624 build directory is the following (tested on Linux), maybe with
3627 # Place yourself outside of the OpenSSL source tree. In
3628 # this example, the environment variable OPENSSL_SOURCE
3629 # is assumed to contain the absolute OpenSSL source directory.
3630 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
3631 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
3632 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
3633 mkdir -p `dirname $F`
3634 ln -s $OPENSSL_SOURCE/$F $F
3637 To be absolutely sure not to disturb the source tree, a "make clean"
3638 is a good thing. If it isn't successfull, don't worry about it,
3639 it probably means the source directory is very clean.
3642 *) Make sure any ENGINE control commands make local copies of string
3643 pointers passed to them whenever necessary. Otherwise it is possible
3644 the caller may have overwritten (or deallocated) the original string
3645 data when a later ENGINE operation tries to use the stored values.
3646 [Götz Babin-Ebell <babinebell@trustcenter.de>]
3648 *) Improve diagnostics in file reading and command-line digests.
3649 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
3651 *) Add AES modes CFB and OFB to the object database. Correct an
3652 error in AES-CFB decryption.
3655 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
3656 allows existing EVP_CIPHER_CTX structures to be reused after
3657 calling EVP_*Final(). This behaviour is used by encryption
3658 BIOs and some applications. This has the side effect that
3659 applications must explicitly clean up cipher contexts with
3660 EVP_CIPHER_CTX_cleanup() or they will leak memory.
3663 *) Check the values of dna and dnb in bn_mul_recursive before calling
3664 bn_mul_comba (a non zero value means the a or b arrays do not contain
3665 n2 elements) and fallback to bn_mul_normal if either is not zero.
3668 *) Fix escaping of non-ASCII characters when using the -subj option
3669 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
3672 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
3673 form for "surname", serialNumber has no short form.
3674 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
3675 therefore remove "mail" short name for "internet 7".
3676 The OID for unique identifiers in X509 certificates is
3677 x500UniqueIdentifier, not uniqueIdentifier.
3678 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
3681 *) Add an "init" command to the ENGINE config module and auto initialize
3682 ENGINEs. Without any "init" command the ENGINE will be initialized
3683 after all ctrl commands have been executed on it. If init=1 the
3684 ENGINE is initailized at that point (ctrls before that point are run
3685 on the uninitialized ENGINE and after on the initialized one). If
3686 init=0 then the ENGINE will not be iniatialized at all.
3689 *) Fix the 'app_verify_callback' interface so that the user-defined
3690 argument is actually passed to the callback: In the
3691 SSL_CTX_set_cert_verify_callback() prototype, the callback
3692 declaration has been changed from
3695 int (*cb)(X509_STORE_CTX *,void *);
3696 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
3697 i=s->ctx->app_verify_callback(&ctx)
3698 has been changed into
3699 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
3701 To update applications using SSL_CTX_set_cert_verify_callback(),
3702 a dummy argument can be added to their callback functions.
3703 [D. K. Smetters <smetters@parc.xerox.com>]
3705 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
3706 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
3708 *) Add and OPENSSL_LOAD_CONF define which will cause
3709 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
3710 This allows older applications to transparently support certain
3711 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
3712 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
3713 load the config file and OPENSSL_add_all_algorithms_conf() which will
3714 always load it have also been added.
3717 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
3718 Adjust NIDs and EVP layer.
3719 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3721 *) Config modules support in openssl utility.
3723 Most commands now load modules from the config file,
3724 though in a few (such as version) this isn't done
3725 because it couldn't be used for anything.
3727 In the case of ca and req the config file used is
3728 the same as the utility itself: that is the -config
3729 command line option can be used to specify an
3733 *) Move default behaviour from OPENSSL_config(). If appname is NULL
3734 use "openssl_conf" if filename is NULL use default openssl config file.
3737 *) Add an argument to OPENSSL_config() to allow the use of an alternative
3738 config section name. Add a new flag to tolerate a missing config file
3739 and move code to CONF_modules_load_file().
3742 *) Support for crypto accelerator cards from Accelerated Encryption
3743 Processing, www.aep.ie. (Use engine 'aep')
3744 The support was copied from 0.9.6c [engine] and adapted/corrected
3745 to work with the new engine framework.
3746 [AEP Inc. and Richard Levitte]
3748 *) Support for SureWare crypto accelerator cards from Baltimore
3749 Technologies. (Use engine 'sureware')
3750 The support was copied from 0.9.6c [engine] and adapted
3751 to work with the new engine framework.
3754 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
3755 make the newer ENGINE framework commands for the CHIL engine work.
3756 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
3758 *) Make it possible to produce shared libraries on ReliantUNIX.
3759 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
3761 *) Add the configuration target debug-linux-ppro.
3762 Make 'openssl rsa' use the general key loading routines
3763 implemented in apps.c, and make those routines able to
3764 handle the key format FORMAT_NETSCAPE and the variant
3766 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3768 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
3769 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3771 *) Add -keyform to rsautl, and document -engine.
3772 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
3774 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
3775 BIO_R_NO_SUCH_FILE error code rather than the generic
3776 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
3779 *) Add new functions
3781 ERR_peek_last_error_line
3782 ERR_peek_last_error_line_data.
3783 These are similar to
3786 ERR_peek_error_line_data,
3787 but report on the latest error recorded rather than the first one
3788 still in the error queue.
3789 [Ben Laurie, Bodo Moeller]
3791 *) default_algorithms option in ENGINE config module. This allows things
3793 default_algorithms = ALL
3794 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
3797 *) Prelminary ENGINE config module.
3800 *) New experimental application configuration code.
3803 *) Change the AES code to follow the same name structure as all other
3804 symmetric ciphers, and behave the same way. Move everything to
3805 the directory crypto/aes, thereby obsoleting crypto/rijndael.
3806 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3808 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
3809 [Ben Laurie and Theo de Raadt]
3811 *) Add option to output public keys in req command.
3812 [Massimiliano Pala madwolf@openca.org]
3814 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
3815 (up to about 10% better than before for P-192 and P-224).
3818 *) New functions/macros
3820 SSL_CTX_set_msg_callback(ctx, cb)
3821 SSL_CTX_set_msg_callback_arg(ctx, arg)
3822 SSL_set_msg_callback(ssl, cb)
3823 SSL_set_msg_callback_arg(ssl, arg)
3825 to request calling a callback function
3827 void cb(int write_p, int version, int content_type,
3828 const void *buf, size_t len, SSL *ssl, void *arg)
3830 whenever a protocol message has been completely received
3831 (write_p == 0) or sent (write_p == 1). Here 'version' is the
3832 protocol version according to which the SSL library interprets
3833 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
3834 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
3835 the content type as defined in the SSL 3.0/TLS 1.0 protocol
3836 specification (change_cipher_spec(20), alert(21), handshake(22)).
3837 'buf' and 'len' point to the actual message, 'ssl' to the
3838 SSL object, and 'arg' is the application-defined value set by
3839 SSL[_CTX]_set_msg_callback_arg().
3841 'openssl s_client' and 'openssl s_server' have new '-msg' options
3842 to enable a callback that displays all protocol messages.
3845 *) Change the shared library support so shared libraries are built as
3846 soon as the corresponding static library is finished, and thereby get
3847 openssl and the test programs linked against the shared library.
3848 This still only happens when the keyword "shard" has been given to
3849 the configuration scripts.
3851 NOTE: shared library support is still an experimental thing, and
3852 backward binary compatibility is still not guaranteed.
3853 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
3855 *) Add support for Subject Information Access extension.
3856 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3858 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
3859 additional bytes when new memory had to be allocated, not just
3860 when reusing an existing buffer.
3863 *) New command line and configuration option 'utf8' for the req command.
3864 This allows field values to be specified as UTF8 strings.
3867 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
3868 runs for the former and machine-readable output for the latter.
3871 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
3872 of the e-mail address in the DN (i.e., it will go into a certificate
3873 extension only). The new configuration file option 'email_in_dn = no'
3874 has the same effect.
3875 [Massimiliano Pala madwolf@openca.org]
3877 *) Change all functions with names starting with des_ to be starting
3878 with DES_ instead. Add wrappers that are compatible with libdes,
3879 but are named _ossl_old_des_*. Finally, add macros that map the
3880 des_* symbols to the corresponding _ossl_old_des_* if libdes
3881 compatibility is desired. If OpenSSL 0.9.6c compatibility is
3882 desired, the des_* symbols will be mapped to DES_*, with one
3885 Since we provide two compatibility mappings, the user needs to
3886 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
3887 compatibility is desired. The default (i.e., when that macro
3888 isn't defined) is OpenSSL 0.9.6c compatibility.
3890 There are also macros that enable and disable the support of old
3891 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
3892 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
3893 are defined, the default will apply: to support the old des routines.
3895 In either case, one must include openssl/des.h to get the correct
3896 definitions. Do not try to just include openssl/des_old.h, that
3899 NOTE: This is a major break of an old API into a new one. Software
3900 authors are encouraged to switch to the DES_ style functions. Some
3901 time in the future, des_old.h and the libdes compatibility functions
3902 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
3903 default), and then completely removed.
3906 *) Test for certificates which contain unsupported critical extensions.
3907 If such a certificate is found during a verify operation it is
3908 rejected by default: this behaviour can be overridden by either
3909 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
3910 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
3911 X509_supported_extension() has also been added which returns 1 if a
3912 particular extension is supported.
3915 *) Modify the behaviour of EVP cipher functions in similar way to digests
3916 to retain compatibility with existing code.
3919 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
3920 compatibility with existing code. In particular the 'ctx' parameter does
3921 not have to be to be initialized before the call to EVP_DigestInit() and
3922 it is tidied up after a call to EVP_DigestFinal(). New function
3923 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
3924 EVP_MD_CTX_copy() changed to not require the destination to be
3925 initialized valid and new function EVP_MD_CTX_copy_ex() added which
3926 requires the destination to be valid.
3928 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
3929 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
3932 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
3933 so that complete 'Handshake' protocol structures are kept in memory
3934 instead of overwriting 'msg_type' and 'length' with 'body' data.
3937 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
3938 [Massimo Santin via Richard Levitte]
3940 *) Major restructuring to the underlying ENGINE code. This includes
3941 reduction of linker bloat, separation of pure "ENGINE" manipulation
3942 (initialisation, etc) from functionality dealing with implementations
3943 of specific crypto iterfaces. This change also introduces integrated
3944 support for symmetric ciphers and digest implementations - so ENGINEs
3945 can now accelerate these by providing EVP_CIPHER and EVP_MD
3946 implementations of their own. This is detailed in crypto/engine/README
3947 as it couldn't be adequately described here. However, there are a few
3948 API changes worth noting - some RSA, DSA, DH, and RAND functions that
3949 were changed in the original introduction of ENGINE code have now
3950 reverted back - the hooking from this code to ENGINE is now a good
3951 deal more passive and at run-time, operations deal directly with
3952 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
3953 dereferencing through an ENGINE pointer any more. Also, the ENGINE
3954 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
3955 they were not being used by the framework as there is no concept of a
3956 BIGNUM_METHOD and they could not be generalised to the new
3957 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
3958 ENGINE_cpy() has been removed as it cannot be consistently defined in
3962 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
3965 *) Change mkdef.pl to sort symbols that get the same entry number,
3966 and make sure the automatically generated functions ERR_load_*
3967 become part of libeay.num as well.
3970 *) New function SSL_renegotiate_pending(). This returns true once
3971 renegotiation has been requested (either SSL_renegotiate() call
3972 or HelloRequest/ClientHello receveived from the peer) and becomes
3973 false once a handshake has been completed.
3974 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
3975 sends a HelloRequest, but does not ensure that a handshake takes
3976 place. SSL_renegotiate_pending() is useful for checking if the
3977 client has followed the request.)
3980 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
3981 By default, clients may request session resumption even during
3982 renegotiation (if session ID contexts permit); with this option,
3983 session resumption is possible only in the first handshake.
3985 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
3986 more bits available for options that should not be part of
3987 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
3990 *) Add some demos for certificate and certificate request creation.
3993 *) Make maximum certificate chain size accepted from the peer application
3994 settable (SSL*_get/set_max_cert_list()), as proposed by
3995 "Douglas E. Engert" <deengert@anl.gov>.
3998 *) Add support for shared libraries for Unixware-7
3999 (Boyd Lynn Gerber <gerberb@zenez.com>).
4002 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
4003 be done prior to destruction. Use this to unload error strings from
4004 ENGINEs that load their own error strings. NB: This adds two new API
4005 functions to "get" and "set" this destroy handler in an ENGINE.
4008 *) Alter all existing ENGINE implementations (except "openssl" and
4009 "openbsd") to dynamically instantiate their own error strings. This
4010 makes them more flexible to be built both as statically-linked ENGINEs
4011 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
4012 Also, add stub code to each that makes building them as self-contained
4013 shared-libraries easier (see README.ENGINE).
4016 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
4017 implementations into applications that are completely implemented in
4018 self-contained shared-libraries. The "dynamic" ENGINE exposes control
4019 commands that can be used to configure what shared-library to load and
4020 to control aspects of the way it is handled. Also, made an update to
4021 the README.ENGINE file that brings its information up-to-date and
4022 provides some information and instructions on the "dynamic" ENGINE
4023 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
4026 *) Make it possible to unload ranges of ERR strings with a new
4027 "ERR_unload_strings" function.
4030 *) Add a copy() function to EVP_MD.
4033 *) Make EVP_MD routines take a context pointer instead of just the
4034 md_data void pointer.
4037 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
4038 that the digest can only process a single chunk of data
4039 (typically because it is provided by a piece of
4040 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
4041 is only going to provide a single chunk of data, and hence the
4042 framework needn't accumulate the data for oneshot drivers.
4045 *) As with "ERR", make it possible to replace the underlying "ex_data"
4046 functions. This change also alters the storage and management of global
4047 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
4048 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
4049 index counters. The API functions that use this state have been changed
4050 to take a "class_index" rather than pointers to the class's local STACK
4051 and counter, and there is now an API function to dynamically create new
4052 classes. This centralisation allows us to (a) plug a lot of the
4053 thread-safety problems that existed, and (b) makes it possible to clean
4054 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
4055 such data would previously have always leaked in application code and
4056 workarounds were in place to make the memory debugging turn a blind eye
4057 to it. Application code that doesn't use this new function will still
4058 leak as before, but their memory debugging output will announce it now
4059 rather than letting it slide.
4061 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
4062 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
4063 has a return value to indicate success or failure.
4066 *) Make it possible to replace the underlying "ERR" functions such that the
4067 global state (2 LHASH tables and 2 locks) is only used by the "default"
4068 implementation. This change also adds two functions to "get" and "set"
4069 the implementation prior to it being automatically set the first time
4070 any other ERR function takes place. Ie. an application can call "get",
4071 pass the return value to a module it has just loaded, and that module
4072 can call its own "set" function using that value. This means the
4073 module's "ERR" operations will use (and modify) the error state in the
4074 application and not in its own statically linked copy of OpenSSL code.
4077 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
4078 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
4079 the operation, and provides a more encapsulated way for external code
4080 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
4081 to use these functions rather than manually incrementing the counts.
4083 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
4086 *) Add EVP test program.
4089 *) Add symmetric cipher support to ENGINE. Expect the API to change!
4092 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
4093 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
4094 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
4095 These allow a CRL to be built without having to access X509_CRL fields
4096 directly. Modify 'ca' application to use new functions.
4099 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
4100 bug workarounds. Rollback attack detection is a security feature.
4101 The problem will only arise on OpenSSL servers when TLSv1 is not
4102 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
4103 Software authors not wanting to support TLSv1 will have special reasons
4104 for their choice and can explicitly enable this option.
4105 [Bodo Moeller, Lutz Jaenicke]
4107 *) Rationalise EVP so it can be extended: don't include a union of
4108 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
4109 (similar to those existing for EVP_CIPHER_CTX).
4114 EVP_MD_CTX_init(&md); /* new function call */
4115 EVP_DigestInit(&md, EVP_sha1());
4116 EVP_DigestUpdate(&md, in, len);
4117 EVP_DigestFinal(&md, out, NULL);
4118 EVP_MD_CTX_cleanup(&md); /* new function call */
4122 *) Make DES key schedule conform to the usual scheme, as well as
4123 correcting its structure. This means that calls to DES functions
4124 now have to pass a pointer to a des_key_schedule instead of a
4125 plain des_key_schedule (which was actually always a pointer
4128 des_key_schedule ks;
4130 des_set_key_checked(..., &ks);
4131 des_ncbc_encrypt(..., &ks, ...);
4133 (Note that a later change renames 'des_...' into 'DES_...'.)
4136 *) Initial reduction of linker bloat: the use of some functions, such as
4137 PEM causes large amounts of unused functions to be linked in due to
4138 poor organisation. For example pem_all.c contains every PEM function
4139 which has a knock on effect of linking in large amounts of (unused)
4140 ASN1 code. Grouping together similar functions and splitting unrelated
4141 functions prevents this.
4144 *) Cleanup of EVP macros.
4147 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
4148 correct _ecb suffix.
4151 *) Add initial OCSP responder support to ocsp application. The
4152 revocation information is handled using the text based index
4153 use by the ca application. The responder can either handle
4154 requests generated internally, supplied in files (for example
4155 via a CGI script) or using an internal minimal server.
4158 *) Add configuration choices to get zlib compression for TLS.
4161 *) Changes to Kerberos SSL for RFC 2712 compliance:
4162 1. Implemented real KerberosWrapper, instead of just using
4163 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
4164 2. Implemented optional authenticator field of KerberosWrapper.
4166 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
4167 and authenticator structs; see crypto/krb5/.
4169 Generalized Kerberos calls to support multiple Kerberos libraries.
4170 [Vern Staats <staatsvr@asc.hpc.mil>,
4171 Jeffrey Altman <jaltman@columbia.edu>
4172 via Richard Levitte]
4174 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
4175 already does with RSA. testdsa.h now has 'priv_key/pub_key'
4176 values for each of the key sizes rather than having just
4177 parameters (and 'speed' generating keys each time).
4180 *) Speed up EVP routines.
4183 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
4184 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
4185 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
4186 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
4188 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
4189 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
4190 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
4193 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
4195 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
4198 *) Added the OS2-EMX target.
4199 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
4201 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
4202 to support NCONF routines in extension code. New function CONF_set_nconf()
4203 to allow functions which take an NCONF to also handle the old LHASH
4204 structure: this means that the old CONF compatible routines can be
4205 retained (in particular wrt extensions) without having to duplicate the
4206 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
4209 *) Enhance the general user interface with mechanisms for inner control
4210 and with possibilities to have yes/no kind of prompts.
4213 *) Change all calls to low level digest routines in the library and
4214 applications to use EVP. Add missing calls to HMAC_cleanup() and
4215 don't assume HMAC_CTX can be copied using memcpy().
4216 [Verdon Walker <VWalker@novell.com>, Steve Henson]
4218 *) Add the possibility to control engines through control names but with
4219 arbitrary arguments instead of just a string.
4220 Change the key loaders to take a UI_METHOD instead of a callback
4221 function pointer. NOTE: this breaks binary compatibility with earlier
4222 versions of OpenSSL [engine].
4223 Adapt the nCipher code for these new conditions and add a card insertion
4227 *) Enhance the general user interface with mechanisms to better support
4228 dialog box interfaces, application-defined prompts, the possibility
4229 to use defaults (for example default passwords from somewhere else)
4230 and interrupts/cancellations.
4233 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
4234 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
4237 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
4238 tidy up some unnecessarily weird code in 'sk_new()').
4239 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
4241 *) Change the key loading routines for ENGINEs to use the same kind
4242 callback (pem_password_cb) as all other routines that need this
4246 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
4247 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
4248 than this minimum value is recommended.
4251 *) New random seeder for OpenVMS, using the system process statistics
4252 that are easily reachable.
4255 *) Windows apparently can't transparently handle global
4256 variables defined in DLLs. Initialisations such as:
4258 const ASN1_ITEM *it = &ASN1_INTEGER_it;
4260 wont compile. This is used by the any applications that need to
4261 declare their own ASN1 modules. This was fixed by adding the option
4262 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
4263 needed for static libraries under Win32.
4266 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
4267 setting of purpose and trust fields. New X509_STORE trust and
4268 purpose functions and tidy up setting in other SSL functions.
4271 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
4272 structure. These are inherited by X509_STORE_CTX when it is
4273 initialised. This allows various defaults to be set in the
4274 X509_STORE structure (such as flags for CRL checking and custom
4275 purpose or trust settings) for functions which only use X509_STORE_CTX
4276 internally such as S/MIME.
4278 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
4279 trust settings if they are not set in X509_STORE. This allows X509_STORE
4280 purposes and trust (in S/MIME for example) to override any set by default.
4282 Add command line options for CRL checking to smime, s_client and s_server
4286 *) Initial CRL based revocation checking. If the CRL checking flag(s)
4287 are set then the CRL is looked up in the X509_STORE structure and
4288 its validity and signature checked, then if the certificate is found
4289 in the CRL the verify fails with a revoked error.
4291 Various new CRL related callbacks added to X509_STORE_CTX structure.
4293 Command line options added to 'verify' application to support this.
4295 This needs some additional work, such as being able to handle multiple
4296 CRLs with different times, extension based lookup (rather than just
4297 by subject name) and ultimately more complete V2 CRL extension
4301 *) Add a general user interface API (crypto/ui/). This is designed
4302 to replace things like des_read_password and friends (backward
4303 compatibility functions using this new API are provided).
4304 The purpose is to remove prompting functions from the DES code
4305 section as well as provide for prompting through dialog boxes in
4306 a window system and the like.
4309 *) Add "ex_data" support to ENGINE so implementations can add state at a
4310 per-structure level rather than having to store it globally.
4313 *) Make it possible for ENGINE structures to be copied when retrieved by
4314 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
4315 This causes the "original" ENGINE structure to act like a template,
4316 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
4317 operational state can be localised to each ENGINE structure, despite the
4318 fact they all share the same "methods". New ENGINE structures returned in
4319 this case have no functional references and the return value is the single
4320 structural reference. This matches the single structural reference returned
4321 by ENGINE_by_id() normally, when it is incremented on the pre-existing
4325 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
4326 needs to match any other type at all we need to manually clear the
4330 *) Changes to the "openssl engine" utility to include;
4331 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
4332 about an ENGINE's available control commands.
4333 - executing control commands from command line arguments using the
4334 '-pre' and '-post' switches. '-post' is only used if '-t' is
4335 specified and the ENGINE is successfully initialised. The syntax for
4336 the individual commands are colon-separated, for example;
4337 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
4340 *) New dynamic control command support for ENGINEs. ENGINEs can now
4341 declare their own commands (numbers), names (strings), descriptions,
4342 and input types for run-time discovery by calling applications. A
4343 subset of these commands are implicitly classed as "executable"
4344 depending on their input type, and only these can be invoked through
4345 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
4346 can be based on user input, config files, etc). The distinction is
4347 that "executable" commands cannot return anything other than a boolean
4348 result and can only support numeric or string input, whereas some
4349 discoverable commands may only be for direct use through
4350 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
4351 pointers, or other custom uses. The "executable" commands are to
4352 support parameterisations of ENGINE behaviour that can be
4353 unambiguously defined by ENGINEs and used consistently across any
4354 OpenSSL-based application. Commands have been added to all the
4355 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
4356 control over shared-library paths without source code alterations.
4359 *) Changed all ENGINE implementations to dynamically allocate their
4360 ENGINEs rather than declaring them statically. Apart from this being
4361 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
4362 this also allows the implementations to compile without using the
4363 internal engine_int.h header.
4366 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
4367 'const' value. Any code that should be able to modify a RAND_METHOD
4368 should already have non-const pointers to it (ie. they should only
4369 modify their own ones).
4372 *) Made a variety of little tweaks to the ENGINE code.
4373 - "atalla" and "ubsec" string definitions were moved from header files
4374 to C code. "nuron" string definitions were placed in variables
4375 rather than hard-coded - allowing parameterisation of these values
4376 later on via ctrl() commands.
4377 - Removed unused "#if 0"'d code.
4378 - Fixed engine list iteration code so it uses ENGINE_free() to release
4379 structural references.
4380 - Constified the RAND_METHOD element of ENGINE structures.
4381 - Constified various get/set functions as appropriate and added
4382 missing functions (including a catch-all ENGINE_cpy that duplicates
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