5 Changes between 0.9.8a and 0.9.9 [xx XXX xxxx]
7 *) Add provisional EC pkey method with support for ECDSA and ECDH.
10 *) Add support for key derivation (agreement) in the API, DH method and
14 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
15 public and private key formats. As a side effect these add additional
16 command line functionality not previously available: DSA signatures can be
17 generated and verified using pkeyutl and DH key support and generation in
22 [Oliver Tappe <zooey@hirschkaefer.de>]
24 *) New make target "install_html_docs" installs HTML renditions of the
26 [Oliver Tappe <zooey@hirschkaefer.de>]
28 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
29 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
30 support key and parameter generation and add initial key generation
31 functionality for RSA.
34 *) Add functions for main EVP_PKEY_method operations. The undocumented
35 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
36 EVP_PKEY_{encrypt,decrypt}_old.
39 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
40 key API, doesn't do much yet.
43 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
44 public key algorithms. New option to openssl utility:
45 "list-public-key-algorithms" to print out info.
48 *) Implement the Supported Elliptic Curves Extension for
49 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
52 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
53 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
56 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
57 utilities such as rsa, dsa, dsaparam etc except they process any key
61 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
62 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
63 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
67 *) Initial support for pluggable public key ASN1.
68 De-spaghettify the public key ASN1 handling. Move public and private
69 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
70 algorithm specific handling to a single module within the relevant
71 algorithm directory. Add functions to allow (near) opaque processing
72 of public and private key structures.
75 *) Implement the Supported Point Formats Extension for
76 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
79 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
80 for the psk identity [hint] and the psk callback functions to the
81 SSL_SESSION, SSL and SSL_CTX structure.
84 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
88 SSL_CTX_use_psk_identity_hint
89 SSL_get_psk_identity_hint
91 SSL_use_psk_identity_hint
93 [Mika Kousa and Pasi Eronen of Nokia Corporation]
95 *) Add RFC 3161 compliant time stamp request creation, response generation
96 and response verification functionality.
97 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
99 *) Add initial support for TLS extensions, specifically for the server_name
100 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
101 have new members for a host name. The SSL data structure has an
102 additional member SSL_CTX *initial_ctx so that new sessions can be
103 stored in that context to allow for session resumption, even after the
104 SSL has been switched to a new SSL_CTX in reaction to a client's
105 server_name extension.
107 New functions (subject to change):
110 SSL_get_servername_type()
113 New CTRL codes and macros (subject to change):
115 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
116 - SSL_CTX_set_tlsext_servername_callback()
117 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
118 - SSL_CTX_set_tlsext_servername_arg()
119 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_hostname()
121 openssl s_client has a new '-servername ...' option.
123 openssl s_server has new options '-servername_host ...', '-cert2 ...',
124 '-key2 ...', '-servername_fatal' (subject to change). This allows
125 testing the HostName extension for a specific single host name ('-cert'
126 and '-key' remain fallbacks for handshakes without HostName
127 negotiation). If the unrecogninzed_name alert has to be sent, this by
128 default is a warning; it becomes fatal with the '-servername_fatal'
131 [Peter Sylvester, Remy Allais, Christophe Renou]
133 *) Whirlpool hash implementation is added.
136 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
137 bn(64,32). Because of instruction set limitations it doesn't have
138 any negative impact on performance. This was done mostly in order
139 to make it possible to share assembler modules, such as bn_mul_mont
140 implementations, between 32- and 64-bit builds without hassle.
143 *) Disable rogue ciphersuites:
145 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
146 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
147 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
149 The latter two were purportedly from
150 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
153 Other ciphersuites from draft-ietf-tls-56-bit-ciphersuites-01.txt
154 remain enabled for now, but are just as unofficial, and the ID
155 has long expired; these will probably disappear soon.
158 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
159 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
163 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
164 dedicated Montgomery multiplication procedure, is introduced.
165 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
166 "64-bit" performance on certain 32-bit targets.
169 *) New option SSL_OP_NO_COMP to disable use of compression selectively
170 in SSL structures. New SSL ctrl to set maximum send fragment size.
171 Save memory by seeting the I/O buffer sizes dynamically instead of
172 using the maximum available value.
175 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
176 in addition to the text details.
179 *) Very, very preliminary EXPERIMENTAL support for printing of general
180 ASN1 structures. This currently produces rather ugly output and doesn't
181 handle several customised structures at all.
184 *) Integrated support for PVK file format and some related formats such
185 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
186 these in the 'rsa' and 'dsa' utilities.
189 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
192 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
193 place for the (very old) "NETSCAPE" format certificates which are now
194 handled using new ASN1 code equivalents.
197 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
198 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
199 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
202 *) Modify CRL distribution points extension code to print out previously
203 unsupported fields. Enhance extension setting code to allow setting of
207 *) Add print and set support for Issuing Distribution Point CRL extension.
210 Changes between 0.9.8a and 0.9.8b [XX xxx XXXX]
212 *) When applying a cipher rule check to see if string match is an explicit
213 cipher suite and only match that one cipher suite if it is.
216 *) Link in manifests for VC++ if needed.
217 [Austin Ziegler <halostatue@gmail.com>]
219 *) Update support for ECC-based TLS ciphersuites according to
220 draft-ietf-tls-ecc-12.txt with proposed changes (but without
221 TLS extensions, which are supported starting with the 0.9.9
222 branch, not in the OpenSSL 0.9.8 branch).
225 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
226 opaque EVP_CIPHER_CTX handling.
229 *) Fixes and enhancements to zlib compression code. We now only use
230 "zlib1.dll" and use the default __cdecl calling convention on Win32
231 to conform with the standards mentioned here:
232 http://www.zlib.net/DLL_FAQ.txt
233 Static zlib linking now works on Windows and the new --with-zlib-include
234 --with-zlib-lib options to Configure can be used to supply the location
235 of the headers and library. Gracefully handle case where zlib library
239 *) Several fixes and enhancements to the OID generation code. The old code
240 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
241 handle numbers larger than ULONG_MAX, truncated printing and had a
242 non standard OBJ_obj2txt() behaviour.
245 *) Add support for building of engines under engine/ as shared libraries
246 under VC++ build system.
249 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
250 Hopefully, we will not see any false combination of paths any more.
253 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
255 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
256 (part of SSL_OP_ALL). This option used to disable the
257 countermeasure against man-in-the-middle protocol-version
258 rollback in the SSL 2.0 server implementation, which is a bad
259 idea. (CVE-2005-2969)
261 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
262 for Information Security, National Institute of Advanced Industrial
263 Science and Technology [AIST], Japan)]
265 *) Add two function to clear and return the verify parameter flags.
268 *) Keep cipherlists sorted in the source instead of sorting them at
269 runtime, thus removing the need for a lock.
272 *) Avoid some small subgroup attacks in Diffie-Hellman.
273 [Nick Mathewson and Ben Laurie]
275 *) Add functions for well-known primes.
278 *) Extended Windows CE support.
279 [Satoshi Nakamura and Andy Polyakov]
281 *) Initialize SSL_METHOD structures at compile time instead of during
282 runtime, thus removing the need for a lock.
285 *) Make PKCS7_decrypt() work even if no certificate is supplied by
286 attempting to decrypt each encrypted key in turn. Add support to
290 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
292 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
295 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
296 key into the same file any more.
299 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
302 *) Add -utf8 command line and config file option to 'ca'.
303 [Stefan <stf@udoma.org]
305 *) Removed the macro des_crypt(), as it seems to conflict with some
306 libraries. Use DES_crypt().
309 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
310 involves renaming the source and generated shared-libs for
311 both. The engines will accept the corrected or legacy ids
312 ('ncipher' and '4758_cca' respectively) when binding. NB,
313 this only applies when building 'shared'.
314 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
316 *) Add attribute functions to EVP_PKEY structure. Modify
317 PKCS12_create() to recognize a CSP name attribute and
318 use it. Make -CSP option work again in pkcs12 utility.
321 *) Add new functionality to the bn blinding code:
322 - automatic re-creation of the BN_BLINDING parameters after
323 a fixed number of uses (currently 32)
324 - add new function for parameter creation
325 - introduce flags to control the update behaviour of the
326 BN_BLINDING parameters
327 - hide BN_BLINDING structure
328 Add a second BN_BLINDING slot to the RSA structure to improve
329 performance when a single RSA object is shared among several
333 *) Add support for DTLS.
334 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
336 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
337 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
340 *) Remove buggy and incompletet DH cert support from
341 ssl/ssl_rsa.c and ssl/s3_both.c
344 *) Use SHA-1 instead of MD5 as the default digest algorithm for
345 the apps/openssl applications.
348 *) Compile clean with "-Wall -Wmissing-prototypes
349 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
350 DEBUG_SAFESTACK must also be set.
353 *) Change ./Configure so that certain algorithms can be disabled by default.
354 The new counterpiece to "no-xxx" is "enable-xxx".
356 The patented RC5 and MDC2 algorithms will now be disabled unless
357 "enable-rc5" and "enable-mdc2", respectively, are specified.
359 (IDEA remains enabled despite being patented. This is because IDEA
360 is frequently required for interoperability, and there is no license
361 fee for non-commercial use. As before, "no-idea" can be used to
362 avoid this algorithm.)
366 *) Add processing of proxy certificates (see RFC 3820). This work was
367 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
368 EGEE (Enabling Grids for E-science in Europe).
371 *) RC4 performance overhaul on modern architectures/implementations, such
372 as Intel P4, IA-64 and AMD64.
375 *) New utility extract-section.pl. This can be used specify an alternative
376 section number in a pod file instead of having to treat each file as
377 a separate case in Makefile. This can be done by adding two lines to the
380 =for comment openssl_section:XXX
382 The blank line is mandatory.
386 *) New arguments -certform, -keyform and -pass for s_client and s_server
387 to allow alternative format key and certificate files and passphrase
391 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
392 update associated structures and add various utility functions.
394 Add new policy related verify parameters, include policy checking in
395 standard verify code. Enhance 'smime' application with extra parameters
396 to support policy checking and print out.
399 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
400 Nehemiah processors. These extensions support AES encryption in hardware
401 as well as RNG (though RNG support is currently disabled).
402 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
404 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
407 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
408 [Andy Polyakov and a number of other people]
410 *) Improved PowerPC platform support. Most notably BIGNUM assembler
411 implementation contributed by IBM.
412 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
414 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
415 exponent rather than 'unsigned long'. There is a corresponding change to
416 the new 'rsa_keygen' element of the RSA_METHOD structure.
417 [Jelte Jansen, Geoff Thorpe]
419 *) Functionality for creating the initial serial number file is now
420 moved from CA.pl to the 'ca' utility with a new option -create_serial.
422 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
423 number file to 1, which is bound to cause problems. To avoid
424 the problems while respecting compatibility between different 0.9.7
425 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
426 CA.pl for serial number initialization. With the new release 0.9.8,
427 we can fix the problem directly in the 'ca' utility.)
430 *) Reduced header interdepencies by declaring more opaque objects in
431 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
432 give fewer recursive includes, which could break lazy source code - so
433 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
434 developers should define this symbol when building and using openssl to
435 ensure they track the recommended behaviour, interfaces, [etc], but
436 backwards-compatible behaviour prevails when this isn't defined.
439 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
442 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
443 This will generate a random key of the appropriate length based on the
444 cipher context. The EVP_CIPHER can provide its own random key generation
445 routine to support keys of a specific form. This is used in the des and
446 3des routines to generate a key of the correct parity. Update S/MIME
447 code to use new functions and hence generate correct parity DES keys.
448 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
449 valid (weak or incorrect parity).
452 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
453 as looking them up. This is useful when the verified structure may contain
454 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
455 present unless the new PKCS7_NO_CRL flag is asserted.
458 *) Extend ASN1 oid configuration module. It now additionally accepts the
461 shortName = some long name, 1.2.3.4
464 *) Reimplemented the BN_CTX implementation. There is now no more static
465 limitation on the number of variables it can handle nor the depth of the
466 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
467 information can now expand as required, and rather than having a single
468 static array of bignums, BN_CTX now uses a linked-list of such arrays
469 allowing it to expand on demand whilst maintaining the usefulness of
473 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
474 to allow all RSA operations to function using a single BN_CTX.
477 *) Preliminary support for certificate policy evaluation and checking. This
478 is initially intended to pass the tests outlined in "Conformance Testing
479 of Relying Party Client Certificate Path Processing Logic" v1.07.
482 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
483 remained unused and not that useful. A variety of other little bignum
484 tweaks and fixes have also been made continuing on from the audit (see
488 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
489 associated ASN1, EVP and SSL functions and old ASN1 macros.
492 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
493 and this should never fail. So the return value from the use of
494 BN_set_word() (which can fail due to needless expansion) is now deprecated;
495 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
498 *) BN_CTX_get() should return zero-valued bignums, providing the same
499 initialised value as BN_new().
500 [Geoff Thorpe, suggested by Ulf Möller]
502 *) Support for inhibitAnyPolicy certificate extension.
505 *) An audit of the BIGNUM code is underway, for which debugging code is
506 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
507 is considered valid when processing BIGNUMs, and causes execution to
508 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
509 further steps are taken to deliberately pollute unused data in BIGNUM
510 structures to try and expose faulty code further on. For now, openssl will
511 (in its default mode of operation) continue to tolerate the inconsistent
512 forms that it has tolerated in the past, but authors and packagers should
513 consider trying openssl and their own applications when compiled with
514 these debugging symbols defined. It will help highlight potential bugs in
515 their own code, and will improve the test coverage for OpenSSL itself. At
516 some point, these tighter rules will become openssl's default to improve
517 maintainability, though the assert()s and other overheads will remain only
518 in debugging configurations. See bn.h for more details.
519 [Geoff Thorpe, Nils Larsch, Ulf Möller]
521 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
522 that can only be obtained through BN_CTX_new() (which implicitly
523 initialises it). The presence of this function only made it possible
524 to overwrite an existing structure (and cause memory leaks).
527 *) Because of the callback-based approach for implementing LHASH as a
528 template type, lh_insert() adds opaque objects to hash-tables and
529 lh_doall() or lh_doall_arg() are typically used with a destructor callback
530 to clean up those corresponding objects before destroying the hash table
531 (and losing the object pointers). So some over-zealous constifications in
532 LHASH have been relaxed so that lh_insert() does not take (nor store) the
533 objects as "const" and the lh_doall[_arg] callback wrappers are not
534 prototyped to have "const" restrictions on the object pointers they are
535 given (and so aren't required to cast them away any more).
538 *) The tmdiff.h API was so ugly and minimal that our own timing utility
539 (speed) prefers to use its own implementation. The two implementations
540 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
541 its object type properly exposed (MS_TM) instead of casting to/from "char
542 *". This may still change yet if someone realises MS_TM and "ms_time_***"
543 aren't necessarily the greatest nomenclatures - but this is what was used
544 internally to the implementation so I've used that for now.
547 *) Ensure that deprecated functions do not get compiled when
548 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
549 the self-tests were still using deprecated key-generation functions so
550 these have been updated also.
553 *) Reorganise PKCS#7 code to separate the digest location functionality
554 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
555 New function PKCS7_set_digest() to set the digest type for PKCS#7
556 digestedData type. Add additional code to correctly generate the
557 digestedData type and add support for this type in PKCS7 initialization
561 *) New function PKCS7_set0_type_other() this initializes a PKCS7
562 structure of type "other".
565 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
566 sure the loop does correctly stop and breaking ("division by zero")
567 modulus operations are not performed. The (pre-generated) prime
568 table crypto/bn/bn_prime.h was already correct, but it could not be
569 re-generated on some platforms because of the "division by zero"
570 situation in the script.
571 [Ralf S. Engelschall]
573 *) Update support for ECC-based TLS ciphersuites according to
574 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
575 SHA-1 now is only used for "small" curves (where the
576 representation of a field element takes up to 24 bytes); for
577 larger curves, the field element resulting from ECDH is directly
578 used as premaster secret.
579 [Douglas Stebila (Sun Microsystems Laboratories)]
581 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
582 curve secp160r1 to the tests.
583 [Douglas Stebila (Sun Microsystems Laboratories)]
585 *) Add the possibility to load symbols globally with DSO.
586 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
588 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
589 control of the error stack.
592 *) Add support for STORE in ENGINE.
595 *) Add the STORE type. The intention is to provide a common interface
596 to certificate and key stores, be they simple file-based stores, or
597 HSM-type store, or LDAP stores, or...
598 NOTE: The code is currently UNTESTED and isn't really used anywhere.
601 *) Add a generic structure called OPENSSL_ITEM. This can be used to
602 pass a list of arguments to any function as well as provide a way
603 for a function to pass data back to the caller.
606 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
607 works like BUF_strdup() but can be used to duplicate a portion of
608 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
612 *) Add the function sk_find_ex() which works like sk_find(), but will
613 return an index to an element even if an exact match couldn't be
614 found. The index is guaranteed to point at the element where the
615 searched-for key would be inserted to preserve sorting order.
618 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
619 takes an extra flags argument for optional functionality. Currently,
620 the following flags are defined:
622 OBJ_BSEARCH_VALUE_ON_NOMATCH
623 This one gets OBJ_bsearch_ex() to return a pointer to the first
624 element where the comparing function returns a negative or zero
627 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
628 This one gets OBJ_bsearch_ex() to return a pointer to the first
629 element where the comparing function returns zero. This is useful
630 if there are more than one element where the comparing function
634 *) Make it possible to create self-signed certificates with 'openssl ca'
635 in such a way that the self-signed certificate becomes part of the
636 CA database and uses the same mechanisms for serial number generation
637 as all other certificate signing. The new flag '-selfsign' enables
638 this functionality. Adapt CA.sh and CA.pl.in.
641 *) Add functionality to check the public key of a certificate request
642 against a given private. This is useful to check that a certificate
643 request can be signed by that key (self-signing).
646 *) Make it possible to have multiple active certificates with the same
647 subject in the CA index file. This is done only if the keyword
648 'unique_subject' is set to 'no' in the main CA section (default
649 if 'CA_default') of the configuration file. The value is saved
650 with the database itself in a separate index attribute file,
651 named like the index file with '.attr' appended to the name.
654 *) Generate muti valued AVAs using '+' notation in config files for
658 *) Support for nameConstraints certificate extension.
661 *) Support for policyConstraints certificate extension.
664 *) Support for policyMappings certificate extension.
667 *) Make sure the default DSA_METHOD implementation only uses its
668 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
669 and change its own handlers to be NULL so as to remove unnecessary
670 indirection. This lets alternative implementations fallback to the
671 default implementation more easily.
674 *) Support for directoryName in GeneralName related extensions
678 *) Make it possible to link applications using Makefile.shared.
679 Make that possible even when linking against static libraries!
682 *) Support for single pass processing for S/MIME signing. This now
683 means that S/MIME signing can be done from a pipe, in addition
684 cleartext signing (multipart/signed type) is effectively streaming
685 and the signed data does not need to be all held in memory.
687 This is done with a new flag PKCS7_STREAM. When this flag is set
688 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
689 is done after the data is output (and digests calculated) in
693 *) Add full support for -rpath/-R, both in shared libraries and
694 applications, at least on the platforms where it's known how
698 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
699 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
700 will now compute a table of multiples of the generator that
701 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
702 faster (notably in the case of a single point multiplication,
704 [Nils Larsch, Bodo Moeller]
706 *) IPv6 support for certificate extensions. The various extensions
707 which use the IP:a.b.c.d can now take IPv6 addresses using the
708 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
712 *) Added an ENGINE that implements RSA by performing private key
713 exponentiations with the GMP library. The conversions to and from
714 GMP's mpz_t format aren't optimised nor are any montgomery forms
715 cached, and on x86 it appears OpenSSL's own performance has caught up.
716 However there are likely to be other architectures where GMP could
717 provide a boost. This ENGINE is not built in by default, but it can be
718 specified at Configure time and should be accompanied by the necessary
719 linker additions, eg;
720 ./config -DOPENSSL_USE_GMP -lgmp
723 *) "openssl engine" will not display ENGINE/DSO load failure errors when
724 testing availability of engines with "-t" - the old behaviour is
725 produced by increasing the feature's verbosity with "-tt".
728 *) ECDSA routines: under certain error conditions uninitialized BN objects
729 could be freed. Solution: make sure initialization is performed early
730 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
734 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
735 and DH_METHOD (eg. by ENGINE implementations) to override the normal
736 software implementations. For DSA and DH, parameter generation can
737 also be overriden by providing the appropriate method callbacks.
740 *) Change the "progress" mechanism used in key-generation and
741 primality testing to functions that take a new BN_GENCB pointer in
742 place of callback/argument pairs. The new API functions have "_ex"
743 postfixes and the older functions are reimplemented as wrappers for
744 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
745 declarations of the old functions to help (graceful) attempts to
746 migrate to the new functions. Also, the new key-generation API
747 functions operate on a caller-supplied key-structure and return
748 success/failure rather than returning a key or NULL - this is to
749 help make "keygen" another member function of RSA_METHOD etc.
751 Example for using the new callback interface:
753 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
757 BN_GENCB_set(&my_cb, my_callback, my_arg);
759 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
760 /* For the meaning of a, b in calls to my_callback(), see the
761 * documentation of the function that calls the callback.
762 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
763 * my_callback should return 1 if it wants BN_is_prime_ex()
764 * to continue, or 0 to stop.
769 *) Change the ZLIB compression method to be stateful, and make it
770 available to TLS with the number defined in
771 draft-ietf-tls-compression-04.txt.
774 *) Add the ASN.1 structures and functions for CertificatePair, which
775 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
777 CertificatePair ::= SEQUENCE {
778 forward [0] Certificate OPTIONAL,
779 reverse [1] Certificate OPTIONAL,
780 -- at least one of the pair shall be present -- }
782 Also implement the PEM functions to read and write certificate
783 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
785 This needed to be defined, mostly for the sake of the LDAP
786 attribute crossCertificatePair, but may prove useful elsewhere as
790 *) Make it possible to inhibit symlinking of shared libraries in
791 Makefile.shared, for Cygwin's sake.
794 *) Extend the BIGNUM API by creating a function
795 void BN_set_negative(BIGNUM *a, int neg);
796 and a macro that behave like
797 int BN_is_negative(const BIGNUM *a);
799 to avoid the need to access 'a->neg' directly in applications.
802 *) Implement fast modular reduction for pseudo-Mersenne primes
803 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
804 EC_GROUP_new_curve_GFp() will now automatically use this
806 [Nils Larsch <nla@trustcenter.de>]
808 *) Add new lock type (CRYPTO_LOCK_BN).
811 *) Change the ENGINE framework to automatically load engines
812 dynamically from specific directories unless they could be
813 found to already be built in or loaded. Move all the
814 current engines except for the cryptodev one to a new
816 The engines in engines/ are built as shared libraries if
817 the "shared" options was given to ./Configure or ./config.
818 Otherwise, they are inserted in libcrypto.a.
819 /usr/local/ssl/engines is the default directory for dynamic
820 engines, but that can be overriden at configure time through
821 the usual use of --prefix and/or --openssldir, and at run
822 time with the environment variable OPENSSL_ENGINES.
823 [Geoff Thorpe and Richard Levitte]
825 *) Add Makefile.shared, a helper makefile to build shared
826 libraries. Addapt Makefile.org.
829 *) Add version info to Win32 DLLs.
830 [Peter 'Luna' Runestig" <peter@runestig.com>]
832 *) Add new 'medium level' PKCS#12 API. Certificates and keys
833 can be added using this API to created arbitrary PKCS#12
834 files while avoiding the low level API.
836 New options to PKCS12_create(), key or cert can be NULL and
837 will then be omitted from the output file. The encryption
838 algorithm NIDs can be set to -1 for no encryption, the mac
839 iteration count can be set to 0 to omit the mac.
841 Enhance pkcs12 utility by making the -nokeys and -nocerts
842 options work when creating a PKCS#12 file. New option -nomac
843 to omit the mac, NONE can be set for an encryption algorithm.
844 New code is modified to use the enhanced PKCS12_create()
845 instead of the low level API.
848 *) Extend ASN1 encoder to support indefinite length constructed
849 encoding. This can output sequences tags and octet strings in
850 this form. Modify pk7_asn1.c to support indefinite length
851 encoding. This is experimental and needs additional code to
852 be useful, such as an ASN1 bio and some enhanced streaming
855 Extend template encode functionality so that tagging is passed
856 down to the template encoder.
859 *) Let 'openssl req' fail if an argument to '-newkey' is not
860 recognized instead of using RSA as a default.
863 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
864 As these are not official, they are not included in "ALL";
865 the "ECCdraft" ciphersuite group alias can be used to select them.
866 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
868 *) Add ECDH engine support.
869 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
871 *) Add ECDH in new directory crypto/ecdh/.
872 [Douglas Stebila (Sun Microsystems Laboratories)]
874 *) Let BN_rand_range() abort with an error after 100 iterations
875 without success (which indicates a broken PRNG).
878 *) Change BN_mod_sqrt() so that it verifies that the input value
879 is really the square of the return value. (Previously,
880 BN_mod_sqrt would show GIGO behaviour.)
883 *) Add named elliptic curves over binary fields from X9.62, SECG,
884 and WAP/WTLS; add OIDs that were still missing.
886 [Sheueling Chang Shantz and Douglas Stebila
887 (Sun Microsystems Laboratories)]
889 *) Extend the EC library for elliptic curves over binary fields
890 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
893 EC_GF2m_simple_method
897 EC_GROUP_new_curve_GF2m
898 EC_GROUP_set_curve_GF2m
899 EC_GROUP_get_curve_GF2m
900 EC_POINT_set_affine_coordinates_GF2m
901 EC_POINT_get_affine_coordinates_GF2m
902 EC_POINT_set_compressed_coordinates_GF2m
904 Point compression for binary fields is disabled by default for
905 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
908 As binary polynomials are represented as BIGNUMs, various members
909 of the EC_GROUP and EC_POINT data structures can be shared
910 between the implementations for prime fields and binary fields;
911 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
912 are essentially identical to their ..._GFp counterparts.
913 (For simplicity, the '..._GFp' prefix has been dropped from
914 various internal method names.)
916 An internal 'field_div' method (similar to 'field_mul' and
917 'field_sqr') has been added; this is used only for binary fields.
919 [Sheueling Chang Shantz and Douglas Stebila
920 (Sun Microsystems Laboratories)]
922 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
923 through methods ('mul', 'precompute_mult').
925 The generic implementations (now internally called 'ec_wNAF_mul'
926 and 'ec_wNAF_precomputed_mult') remain the default if these
927 methods are undefined.
929 [Sheueling Chang Shantz and Douglas Stebila
930 (Sun Microsystems Laboratories)]
932 *) New function EC_GROUP_get_degree, which is defined through
933 EC_METHOD. For curves over prime fields, this returns the bit
934 length of the modulus.
936 [Sheueling Chang Shantz and Douglas Stebila
937 (Sun Microsystems Laboratories)]
939 *) New functions EC_GROUP_dup, EC_POINT_dup.
940 (These simply call ..._new and ..._copy).
942 [Sheueling Chang Shantz and Douglas Stebila
943 (Sun Microsystems Laboratories)]
945 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
946 Polynomials are represented as BIGNUMs (where the sign bit is not
947 used) in the following functions [macros]:
950 BN_GF2m_sub [= BN_GF2m_add]
951 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
952 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
953 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
955 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
956 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
957 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
958 BN_GF2m_cmp [= BN_ucmp]
960 (Note that only the 'mod' functions are actually for fields GF(2^m).
961 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
963 For some functions, an the irreducible polynomial defining a
964 field can be given as an 'unsigned int[]' with strictly
965 decreasing elements giving the indices of those bits that are set;
966 i.e., p[] represents the polynomial
967 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
969 p[0] > p[1] > ... > p[k] = 0.
970 This applies to the following functions:
975 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
976 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
979 BN_GF2m_mod_solve_quad_arr
983 Conversion can be performed by the following functions:
988 bntest.c has additional tests for binary polynomial arithmetic.
990 Two implementations for BN_GF2m_mod_div() are available.
991 The default algorithm simply uses BN_GF2m_mod_inv() and
992 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
993 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
994 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
996 [Sheueling Chang Shantz and Douglas Stebila
997 (Sun Microsystems Laboratories)]
999 *) Add new error code 'ERR_R_DISABLED' that can be used when some
1000 functionality is disabled at compile-time.
1001 [Douglas Stebila <douglas.stebila@sun.com>]
1003 *) Change default behaviour of 'openssl asn1parse' so that more
1004 information is visible when viewing, e.g., a certificate:
1006 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
1007 mode the content of non-printable OCTET STRINGs is output in a
1008 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
1009 avoid the appearance of a printable string.
1010 [Nils Larsch <nla@trustcenter.de>]
1012 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
1014 EC_GROUP_set_asn1_flag()
1015 EC_GROUP_get_asn1_flag()
1016 EC_GROUP_set_point_conversion_form()
1017 EC_GROUP_get_point_conversion_form()
1018 These control ASN1 encoding details:
1019 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
1020 has been set to OPENSSL_EC_NAMED_CURVE.
1021 - Points are encoded in uncompressed form by default; options for
1022 asn1_for are as for point2oct, namely
1023 POINT_CONVERSION_COMPRESSED
1024 POINT_CONVERSION_UNCOMPRESSED
1025 POINT_CONVERSION_HYBRID
1027 Also add 'seed' and 'seed_len' members to EC_GROUP with access
1030 EC_GROUP_get0_seed()
1031 EC_GROUP_get_seed_len()
1032 This is used only for ASN1 purposes (so far).
1033 [Nils Larsch <nla@trustcenter.de>]
1035 *) Add 'field_type' member to EC_METHOD, which holds the NID
1036 of the appropriate field type OID. The new function
1037 EC_METHOD_get_field_type() returns this value.
1038 [Nils Larsch <nla@trustcenter.de>]
1043 EC_POINT_point2hex()
1044 EC_POINT_hex2point()
1045 providing useful interfaces to EC_POINT_point2oct() and
1046 EC_POINT_oct2point().
1047 [Nils Larsch <nla@trustcenter.de>]
1049 *) Change internals of the EC library so that the functions
1050 EC_GROUP_set_generator()
1051 EC_GROUP_get_generator()
1052 EC_GROUP_get_order()
1053 EC_GROUP_get_cofactor()
1054 are implemented directly in crypto/ec/ec_lib.c and not dispatched
1055 to methods, which would lead to unnecessary code duplication when
1056 adding different types of curves.
1057 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
1059 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
1060 arithmetic, and such that modified wNAFs are generated
1061 (which avoid length expansion in many cases).
1064 *) Add a function EC_GROUP_check_discriminant() (defined via
1065 EC_METHOD) that verifies that the curve discriminant is non-zero.
1067 Add a function EC_GROUP_check() that makes some sanity tests
1068 on a EC_GROUP, its generator and order. This includes
1069 EC_GROUP_check_discriminant().
1070 [Nils Larsch <nla@trustcenter.de>]
1072 *) Add ECDSA in new directory crypto/ecdsa/.
1074 Add applications 'openssl ecparam' and 'openssl ecdsa'
1075 (these are based on 'openssl dsaparam' and 'openssl dsa').
1077 ECDSA support is also included in various other files across the
1078 library. Most notably,
1079 - 'openssl req' now has a '-newkey ecdsa:file' option;
1080 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
1081 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
1082 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
1083 them suitable for ECDSA where domain parameters must be
1084 extracted before the specific public key;
1085 - ECDSA engine support has been added.
1086 [Nils Larsch <nla@trustcenter.de>]
1088 *) Include some named elliptic curves, and add OIDs from X9.62,
1089 SECG, and WAP/WTLS. Each curve can be obtained from the new
1091 EC_GROUP_new_by_curve_name(),
1092 and the list of available named curves can be obtained with
1093 EC_get_builtin_curves().
1094 Also add a 'curve_name' member to EC_GROUP objects, which can be
1096 EC_GROUP_set_curve_name()
1097 EC_GROUP_get_curve_name()
1098 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
1100 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
1101 was actually never needed) and in BN_mul(). The removal in BN_mul()
1102 required a small change in bn_mul_part_recursive() and the addition
1103 of the functions bn_cmp_part_words(), bn_sub_part_words() and
1104 bn_add_part_words(), which do the same thing as bn_cmp_words(),
1105 bn_sub_words() and bn_add_words() except they take arrays with
1109 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
1111 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
1112 The value now differs depending on if you build for FIPS or not.
1113 BEWARE! A program linked with a shared FIPSed libcrypto can't be
1114 safely run with a non-FIPSed libcrypto, as it may crash because of
1115 the difference induced by this change.
1118 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
1120 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
1121 (part of SSL_OP_ALL). This option used to disable the
1122 countermeasure against man-in-the-middle protocol-version
1123 rollback in the SSL 2.0 server implementation, which is a bad
1124 idea. (CVE-2005-2969)
1126 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
1127 for Information Security, National Institute of Advanced Industrial
1128 Science and Technology [AIST], Japan)]
1130 *) Minimal support for X9.31 signatures and PSS padding modes. This is
1131 mainly for FIPS compliance and not fully integrated at this stage.
1134 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
1135 the exponentiation using a fixed-length exponent. (Otherwise,
1136 the information leaked through timing could expose the secret key
1137 after many signatures; cf. Bleichenbacher's attack on DSA with
1141 *) Make a new fixed-window mod_exp implementation the default for
1142 RSA, DSA, and DH private-key operations so that the sequence of
1143 squares and multiplies and the memory access pattern are
1144 independent of the particular secret key. This will mitigate
1145 cache-timing and potential related attacks.
1147 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
1148 and this is automatically used by BN_mod_exp_mont() if the new flag
1149 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
1150 will use this BN flag for private exponents unless the flag
1151 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
1152 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
1154 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
1156 *) Change the client implementation for SSLv23_method() and
1157 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
1158 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
1159 (Previously, the SSL 2.0 backwards compatible Client Hello
1160 message format would be used even with SSL_OP_NO_SSLv2.)
1163 *) Add support for smime-type MIME parameter in S/MIME messages which some
1167 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
1168 a threadsafe manner. Modify rsa code to use new function and add calls
1169 to dsa and dh code (which had race conditions before).
1172 *) Include the fixed error library code in the C error file definitions
1173 instead of fixing them up at runtime. This keeps the error code
1174 structures constant.
1177 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
1179 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
1182 *) Fixes for newer kerberos headers. NB: the casts are needed because
1183 the 'length' field is signed on one version and unsigned on another
1184 with no (?) obvious way to tell the difference, without these VC++
1185 complains. Also the "definition" of FAR (blank) is no longer included
1186 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
1187 some needed definitions.
1190 *) Undo Cygwin change.
1193 *) Added support for proxy certificates according to RFC 3820.
1194 Because they may be a security thread to unaware applications,
1195 they must be explicitely allowed in run-time. See
1196 docs/HOWTO/proxy_certificates.txt for further information.
1199 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
1201 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
1202 server and client random values. Previously
1203 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
1204 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
1206 This change has negligible security impact because:
1208 1. Server and client random values still have 24 bytes of pseudo random
1211 2. Server and client random values are sent in the clear in the initial
1214 3. The master secret is derived using the premaster secret (48 bytes in
1215 size for static RSA ciphersuites) as well as client server and random
1218 The OpenSSL team would like to thank the UK NISCC for bringing this issue
1221 [Stephen Henson, reported by UK NISCC]
1223 *) Use Windows randomness collection on Cygwin.
1226 *) Fix hang in EGD/PRNGD query when communication socket is closed
1227 prematurely by EGD/PRNGD.
1228 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
1230 *) Prompt for pass phrases when appropriate for PKCS12 input format.
1233 *) Back-port of selected performance improvements from development
1234 branch, as well as improved support for PowerPC platforms.
1237 *) Add lots of checks for memory allocation failure, error codes to indicate
1238 failure and freeing up memory if a failure occurs.
1239 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
1241 *) Add new -passin argument to dgst.
1244 *) Perform some character comparisons of different types in X509_NAME_cmp:
1245 this is needed for some certificates that reencode DNs into UTF8Strings
1246 (in violation of RFC3280) and can't or wont issue name rollover
1250 *) Make an explicit check during certificate validation to see that
1251 the CA setting in each certificate on the chain is correct. As a
1252 side effect always do the following basic checks on extensions,
1253 not just when there's an associated purpose to the check:
1255 - if there is an unhandled critical extension (unless the user
1256 has chosen to ignore this fault)
1257 - if the path length has been exceeded (if one is set at all)
1258 - that certain extensions fit the associated purpose (if one has
1262 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
1264 *) Avoid a race condition when CRLs are checked in a multi threaded
1265 environment. This would happen due to the reordering of the revoked
1266 entries during signature checking and serial number lookup. Now the
1267 encoding is cached and the serial number sort performed under a lock.
1268 Add new STACK function sk_is_sorted().
1271 *) Add Delta CRL to the extension code.
1274 *) Various fixes to s3_pkt.c so alerts are sent properly.
1275 [David Holmes <d.holmes@f5.com>]
1277 *) Reduce the chances of duplicate issuer name and serial numbers (in
1278 violation of RFC3280) using the OpenSSL certificate creation utilities.
1279 This is done by creating a random 64 bit value for the initial serial
1280 number when a serial number file is created or when a self signed
1281 certificate is created using 'openssl req -x509'. The initial serial
1282 number file is created using 'openssl x509 -next_serial' in CA.pl
1283 rather than being initialized to 1.
1286 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
1288 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
1289 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
1290 [Joe Orton, Steve Henson]
1292 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
1294 [Joe Orton, Steve Henson]
1296 *) Make it possible to have multiple active certificates with the same
1297 subject in the CA index file. This is done only if the keyword
1298 'unique_subject' is set to 'no' in the main CA section (default
1299 if 'CA_default') of the configuration file. The value is saved
1300 with the database itself in a separate index attribute file,
1301 named like the index file with '.attr' appended to the name.
1304 *) X509 verify fixes. Disable broken certificate workarounds when
1305 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
1306 keyUsage extension present. Don't accept CRLs with unhandled critical
1307 extensions: since verify currently doesn't process CRL extensions this
1308 rejects a CRL with *any* critical extensions. Add new verify error codes
1312 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
1313 A clarification of RFC2560 will require the use of OCTET STRINGs and
1314 some implementations cannot handle the current raw format. Since OpenSSL
1315 copies and compares OCSP nonces as opaque blobs without any attempt at
1316 parsing them this should not create any compatibility issues.
1319 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
1320 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
1321 this HMAC (and other) operations are several times slower than OpenSSL
1325 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
1326 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
1328 *) Use the correct content when signing type "other".
1331 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
1333 *) Fix various bugs revealed by running the NISCC test suite:
1335 Stop out of bounds reads in the ASN1 code when presented with
1336 invalid tags (CVE-2003-0543 and CVE-2003-0544).
1338 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
1340 If verify callback ignores invalid public key errors don't try to check
1341 certificate signature with the NULL public key.
1345 *) New -ignore_err option in ocsp application to stop the server
1346 exiting on the first error in a request.
1349 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
1350 if the server requested one: as stated in TLS 1.0 and SSL 3.0
1354 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
1355 extra data after the compression methods not only for TLS 1.0
1356 but also for SSL 3.0 (as required by the specification).
1357 [Bodo Moeller; problem pointed out by Matthias Loepfe]
1359 *) Change X509_certificate_type() to mark the key as exported/exportable
1360 when it's 512 *bits* long, not 512 bytes.
1363 *) Change AES_cbc_encrypt() so it outputs exact multiple of
1364 blocks during encryption.
1367 *) Various fixes to base64 BIO and non blocking I/O. On write
1368 flushes were not handled properly if the BIO retried. On read
1369 data was not being buffered properly and had various logic bugs.
1370 This also affects blocking I/O when the data being decoded is a
1374 *) Various S/MIME bugfixes and compatibility changes:
1375 output correct application/pkcs7 MIME type if
1376 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
1377 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
1378 of files as .eml work). Correctly handle very long lines in MIME
1382 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
1384 *) Countermeasure against the Klima-Pokorny-Rosa extension of
1385 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
1386 a protocol version number mismatch like a decryption error
1387 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
1390 *) Turn on RSA blinding by default in the default implementation
1391 to avoid a timing attack. Applications that don't want it can call
1392 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
1393 They would be ill-advised to do so in most cases.
1394 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
1396 *) Change RSA blinding code so that it works when the PRNG is not
1397 seeded (in this case, the secret RSA exponent is abused as
1398 an unpredictable seed -- if it is not unpredictable, there
1399 is no point in blinding anyway). Make RSA blinding thread-safe
1400 by remembering the creator's thread ID in rsa->blinding and
1401 having all other threads use local one-time blinding factors
1402 (this requires more computation than sharing rsa->blinding, but
1403 avoids excessive locking; and if an RSA object is not shared
1404 between threads, blinding will still be very fast).
1407 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
1408 ENGINE as defaults for all supported algorithms irrespective of
1409 the 'flags' parameter. 'flags' is now honoured, so applications
1410 should make sure they are passing it correctly.
1413 *) Target "mingw" now allows native Windows code to be generated in
1414 the Cygwin environment as well as with the MinGW compiler.
1417 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
1419 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
1420 via timing by performing a MAC computation even if incorrrect
1421 block cipher padding has been found. This is a countermeasure
1422 against active attacks where the attacker has to distinguish
1423 between bad padding and a MAC verification error. (CVE-2003-0078)
1425 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
1426 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
1427 Martin Vuagnoux (EPFL, Ilion)]
1429 *) Make the no-err option work as intended. The intention with no-err
1430 is not to have the whole error stack handling routines removed from
1431 libcrypto, it's only intended to remove all the function name and
1432 reason texts, thereby removing some of the footprint that may not
1433 be interesting if those errors aren't displayed anyway.
1435 NOTE: it's still possible for any application or module to have it's
1436 own set of error texts inserted. The routines are there, just not
1437 used by default when no-err is given.
1440 *) Add support for FreeBSD on IA64.
1441 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
1443 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
1444 Kerberos function mit_des_cbc_cksum(). Before this change,
1445 the value returned by DES_cbc_cksum() was like the one from
1446 mit_des_cbc_cksum(), except the bytes were swapped.
1447 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
1449 *) Allow an application to disable the automatic SSL chain building.
1450 Before this a rather primitive chain build was always performed in
1451 ssl3_output_cert_chain(): an application had no way to send the
1452 correct chain if the automatic operation produced an incorrect result.
1454 Now the chain builder is disabled if either:
1456 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
1458 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
1460 The reasoning behind this is that an application would not want the
1461 auto chain building to take place if extra chain certificates are
1462 present and it might also want a means of sending no additional
1463 certificates (for example the chain has two certificates and the
1467 *) Add the possibility to build without the ENGINE framework.
1468 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
1470 *) Under Win32 gmtime() can return NULL: check return value in
1471 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
1474 *) DSA routines: under certain error conditions uninitialized BN objects
1475 could be freed. Solution: make sure initialization is performed early
1476 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
1477 Nils Larsch <nla@trustcenter.de> via PR#459)
1480 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
1481 checked on reconnect on the client side, therefore session resumption
1482 could still fail with a "ssl session id is different" error. This
1483 behaviour is masked when SSL_OP_ALL is used due to
1484 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
1485 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
1486 followup to PR #377.
1489 *) IA-32 assembler support enhancements: unified ELF targets, support
1490 for SCO/Caldera platforms, fix for Cygwin shared build.
1493 *) Add support for FreeBSD on sparc64. As a consequence, support for
1494 FreeBSD on non-x86 processors is separate from x86 processors on
1495 the config script, much like the NetBSD support.
1496 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
1498 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
1500 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
1503 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
1504 code (06) was taken as the first octet of the session ID and the last
1505 octet was ignored consequently. As a result SSLv2 client side session
1506 caching could not have worked due to the session ID mismatch between
1508 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
1512 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
1513 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
1517 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
1518 seems that in spite of existing for more than a year, many application
1519 author have done nothing to provide the necessary callbacks, which
1520 means that this particular engine will not work properly anywhere.
1521 This is a very unfortunate situation which forces us, in the name
1522 of usability, to give the hw_ncipher.c a static lock, which is part
1524 NOTE: This is for the 0.9.7 series ONLY. This hack will never
1525 appear in 0.9.8 or later. We EXPECT application authors to have
1526 dealt properly with this when 0.9.8 is released (unless we actually
1527 make such changes in the libcrypto locking code that changes will
1528 have to be made anyway).
1531 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
1532 octets have been read, EOF or an error occurs. Without this change
1533 some truncated ASN1 structures will not produce an error.
1536 *) Disable Heimdal support, since it hasn't been fully implemented.
1537 Still give the possibility to force the use of Heimdal, but with
1538 warnings and a request that patches get sent to openssl-dev.
1541 *) Add the VC-CE target, introduce the WINCE sysname, and add
1542 INSTALL.WCE and appropriate conditionals to make it build.
1543 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
1545 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
1546 cygssl-x.y.z.dll, where x, y and z are the major, minor and
1547 edit numbers of the version.
1548 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
1550 *) Introduce safe string copy and catenation functions
1551 (BUF_strlcpy() and BUF_strlcat()).
1552 [Ben Laurie (CHATS) and Richard Levitte]
1554 *) Avoid using fixed-size buffers for one-line DNs.
1555 [Ben Laurie (CHATS)]
1557 *) Add BUF_MEM_grow_clean() to avoid information leakage when
1558 resizing buffers containing secrets, and use where appropriate.
1559 [Ben Laurie (CHATS)]
1561 *) Avoid using fixed size buffers for configuration file location.
1562 [Ben Laurie (CHATS)]
1564 *) Avoid filename truncation for various CA files.
1565 [Ben Laurie (CHATS)]
1567 *) Use sizeof in preference to magic numbers.
1568 [Ben Laurie (CHATS)]
1570 *) Avoid filename truncation in cert requests.
1571 [Ben Laurie (CHATS)]
1573 *) Add assertions to check for (supposedly impossible) buffer
1575 [Ben Laurie (CHATS)]
1577 *) Don't cache truncated DNS entries in the local cache (this could
1578 potentially lead to a spoofing attack).
1579 [Ben Laurie (CHATS)]
1581 *) Fix various buffers to be large enough for hex/decimal
1582 representations in a platform independent manner.
1583 [Ben Laurie (CHATS)]
1585 *) Add CRYPTO_realloc_clean() to avoid information leakage when
1586 resizing buffers containing secrets, and use where appropriate.
1587 [Ben Laurie (CHATS)]
1589 *) Add BIO_indent() to avoid much slightly worrying code to do
1591 [Ben Laurie (CHATS)]
1593 *) Convert sprintf()/BIO_puts() to BIO_printf().
1594 [Ben Laurie (CHATS)]
1596 *) buffer_gets() could terminate with the buffer only half
1598 [Ben Laurie (CHATS)]
1600 *) Add assertions to prevent user-supplied crypto functions from
1601 overflowing internal buffers by having large block sizes, etc.
1602 [Ben Laurie (CHATS)]
1604 *) New OPENSSL_assert() macro (similar to assert(), but enabled
1606 [Ben Laurie (CHATS)]
1608 *) Eliminate unused copy of key in RC4.
1609 [Ben Laurie (CHATS)]
1611 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
1612 [Ben Laurie (CHATS)]
1614 *) Fix off-by-one error in EGD path.
1615 [Ben Laurie (CHATS)]
1617 *) If RANDFILE path is too long, ignore instead of truncating.
1618 [Ben Laurie (CHATS)]
1620 *) Eliminate unused and incorrectly sized X.509 structure
1622 [Ben Laurie (CHATS)]
1624 *) Eliminate unused and dangerous function knumber().
1625 [Ben Laurie (CHATS)]
1627 *) Eliminate unused and dangerous structure, KSSL_ERR.
1628 [Ben Laurie (CHATS)]
1630 *) Protect against overlong session ID context length in an encoded
1631 session object. Since these are local, this does not appear to be
1633 [Ben Laurie (CHATS)]
1635 *) Change from security patch (see 0.9.6e below) that did not affect
1636 the 0.9.6 release series:
1638 Remote buffer overflow in SSL3 protocol - an attacker could
1639 supply an oversized master key in Kerberos-enabled versions.
1641 [Ben Laurie (CHATS)]
1643 *) Change the SSL kerb5 codes to match RFC 2712.
1646 *) Make -nameopt work fully for req and add -reqopt switch.
1647 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
1649 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
1650 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
1652 *) Make sure tests can be performed even if the corresponding algorithms
1653 have been removed entirely. This was also the last step to make
1654 OpenSSL compilable with DJGPP under all reasonable conditions.
1655 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
1657 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
1658 to allow version independent disabling of normally unselected ciphers,
1659 which may be activated as a side-effect of selecting a single cipher.
1661 (E.g., cipher list string "RSA" enables ciphersuites that are left
1662 out of "ALL" because they do not provide symmetric encryption.
1663 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
1664 [Lutz Jaenicke, Bodo Moeller]
1666 *) Add appropriate support for separate platform-dependent build
1667 directories. The recommended way to make a platform-dependent
1668 build directory is the following (tested on Linux), maybe with
1671 # Place yourself outside of the OpenSSL source tree. In
1672 # this example, the environment variable OPENSSL_SOURCE
1673 # is assumed to contain the absolute OpenSSL source directory.
1674 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
1675 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
1676 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
1677 mkdir -p `dirname $F`
1678 ln -s $OPENSSL_SOURCE/$F $F
1681 To be absolutely sure not to disturb the source tree, a "make clean"
1682 is a good thing. If it isn't successfull, don't worry about it,
1683 it probably means the source directory is very clean.
1686 *) Make sure any ENGINE control commands make local copies of string
1687 pointers passed to them whenever necessary. Otherwise it is possible
1688 the caller may have overwritten (or deallocated) the original string
1689 data when a later ENGINE operation tries to use the stored values.
1690 [Götz Babin-Ebell <babinebell@trustcenter.de>]
1692 *) Improve diagnostics in file reading and command-line digests.
1693 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
1695 *) Add AES modes CFB and OFB to the object database. Correct an
1696 error in AES-CFB decryption.
1699 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
1700 allows existing EVP_CIPHER_CTX structures to be reused after
1701 calling EVP_*Final(). This behaviour is used by encryption
1702 BIOs and some applications. This has the side effect that
1703 applications must explicitly clean up cipher contexts with
1704 EVP_CIPHER_CTX_cleanup() or they will leak memory.
1707 *) Check the values of dna and dnb in bn_mul_recursive before calling
1708 bn_mul_comba (a non zero value means the a or b arrays do not contain
1709 n2 elements) and fallback to bn_mul_normal if either is not zero.
1712 *) Fix escaping of non-ASCII characters when using the -subj option
1713 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
1716 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
1717 form for "surname", serialNumber has no short form.
1718 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
1719 therefore remove "mail" short name for "internet 7".
1720 The OID for unique identifiers in X509 certificates is
1721 x500UniqueIdentifier, not uniqueIdentifier.
1722 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
1725 *) Add an "init" command to the ENGINE config module and auto initialize
1726 ENGINEs. Without any "init" command the ENGINE will be initialized
1727 after all ctrl commands have been executed on it. If init=1 the
1728 ENGINE is initailized at that point (ctrls before that point are run
1729 on the uninitialized ENGINE and after on the initialized one). If
1730 init=0 then the ENGINE will not be iniatialized at all.
1733 *) Fix the 'app_verify_callback' interface so that the user-defined
1734 argument is actually passed to the callback: In the
1735 SSL_CTX_set_cert_verify_callback() prototype, the callback
1736 declaration has been changed from
1739 int (*cb)(X509_STORE_CTX *,void *);
1740 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
1741 i=s->ctx->app_verify_callback(&ctx)
1742 has been changed into
1743 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
1745 To update applications using SSL_CTX_set_cert_verify_callback(),
1746 a dummy argument can be added to their callback functions.
1747 [D. K. Smetters <smetters@parc.xerox.com>]
1749 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
1750 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
1752 *) Add and OPENSSL_LOAD_CONF define which will cause
1753 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
1754 This allows older applications to transparently support certain
1755 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
1756 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
1757 load the config file and OPENSSL_add_all_algorithms_conf() which will
1758 always load it have also been added.
1761 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
1762 Adjust NIDs and EVP layer.
1763 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
1765 *) Config modules support in openssl utility.
1767 Most commands now load modules from the config file,
1768 though in a few (such as version) this isn't done
1769 because it couldn't be used for anything.
1771 In the case of ca and req the config file used is
1772 the same as the utility itself: that is the -config
1773 command line option can be used to specify an
1777 *) Move default behaviour from OPENSSL_config(). If appname is NULL
1778 use "openssl_conf" if filename is NULL use default openssl config file.
1781 *) Add an argument to OPENSSL_config() to allow the use of an alternative
1782 config section name. Add a new flag to tolerate a missing config file
1783 and move code to CONF_modules_load_file().
1786 *) Support for crypto accelerator cards from Accelerated Encryption
1787 Processing, www.aep.ie. (Use engine 'aep')
1788 The support was copied from 0.9.6c [engine] and adapted/corrected
1789 to work with the new engine framework.
1790 [AEP Inc. and Richard Levitte]
1792 *) Support for SureWare crypto accelerator cards from Baltimore
1793 Technologies. (Use engine 'sureware')
1794 The support was copied from 0.9.6c [engine] and adapted
1795 to work with the new engine framework.
1798 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
1799 make the newer ENGINE framework commands for the CHIL engine work.
1800 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
1802 *) Make it possible to produce shared libraries on ReliantUNIX.
1803 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
1805 *) Add the configuration target debug-linux-ppro.
1806 Make 'openssl rsa' use the general key loading routines
1807 implemented in apps.c, and make those routines able to
1808 handle the key format FORMAT_NETSCAPE and the variant
1810 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
1812 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
1813 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
1815 *) Add -keyform to rsautl, and document -engine.
1816 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
1818 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
1819 BIO_R_NO_SUCH_FILE error code rather than the generic
1820 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
1823 *) Add new functions
1825 ERR_peek_last_error_line
1826 ERR_peek_last_error_line_data.
1827 These are similar to
1830 ERR_peek_error_line_data,
1831 but report on the latest error recorded rather than the first one
1832 still in the error queue.
1833 [Ben Laurie, Bodo Moeller]
1835 *) default_algorithms option in ENGINE config module. This allows things
1837 default_algorithms = ALL
1838 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
1841 *) Prelminary ENGINE config module.
1844 *) New experimental application configuration code.
1847 *) Change the AES code to follow the same name structure as all other
1848 symmetric ciphers, and behave the same way. Move everything to
1849 the directory crypto/aes, thereby obsoleting crypto/rijndael.
1850 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
1852 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
1853 [Ben Laurie and Theo de Raadt]
1855 *) Add option to output public keys in req command.
1856 [Massimiliano Pala madwolf@openca.org]
1858 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
1859 (up to about 10% better than before for P-192 and P-224).
1862 *) New functions/macros
1864 SSL_CTX_set_msg_callback(ctx, cb)
1865 SSL_CTX_set_msg_callback_arg(ctx, arg)
1866 SSL_set_msg_callback(ssl, cb)
1867 SSL_set_msg_callback_arg(ssl, arg)
1869 to request calling a callback function
1871 void cb(int write_p, int version, int content_type,
1872 const void *buf, size_t len, SSL *ssl, void *arg)
1874 whenever a protocol message has been completely received
1875 (write_p == 0) or sent (write_p == 1). Here 'version' is the
1876 protocol version according to which the SSL library interprets
1877 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
1878 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
1879 the content type as defined in the SSL 3.0/TLS 1.0 protocol
1880 specification (change_cipher_spec(20), alert(21), handshake(22)).
1881 'buf' and 'len' point to the actual message, 'ssl' to the
1882 SSL object, and 'arg' is the application-defined value set by
1883 SSL[_CTX]_set_msg_callback_arg().
1885 'openssl s_client' and 'openssl s_server' have new '-msg' options
1886 to enable a callback that displays all protocol messages.
1889 *) Change the shared library support so shared libraries are built as
1890 soon as the corresponding static library is finished, and thereby get
1891 openssl and the test programs linked against the shared library.
1892 This still only happens when the keyword "shard" has been given to
1893 the configuration scripts.
1895 NOTE: shared library support is still an experimental thing, and
1896 backward binary compatibility is still not guaranteed.
1897 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
1899 *) Add support for Subject Information Access extension.
1900 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
1902 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
1903 additional bytes when new memory had to be allocated, not just
1904 when reusing an existing buffer.
1907 *) New command line and configuration option 'utf8' for the req command.
1908 This allows field values to be specified as UTF8 strings.
1911 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
1912 runs for the former and machine-readable output for the latter.
1915 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
1916 of the e-mail address in the DN (i.e., it will go into a certificate
1917 extension only). The new configuration file option 'email_in_dn = no'
1918 has the same effect.
1919 [Massimiliano Pala madwolf@openca.org]
1921 *) Change all functions with names starting with des_ to be starting
1922 with DES_ instead. Add wrappers that are compatible with libdes,
1923 but are named _ossl_old_des_*. Finally, add macros that map the
1924 des_* symbols to the corresponding _ossl_old_des_* if libdes
1925 compatibility is desired. If OpenSSL 0.9.6c compatibility is
1926 desired, the des_* symbols will be mapped to DES_*, with one
1929 Since we provide two compatibility mappings, the user needs to
1930 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
1931 compatibility is desired. The default (i.e., when that macro
1932 isn't defined) is OpenSSL 0.9.6c compatibility.
1934 There are also macros that enable and disable the support of old
1935 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
1936 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
1937 are defined, the default will apply: to support the old des routines.
1939 In either case, one must include openssl/des.h to get the correct
1940 definitions. Do not try to just include openssl/des_old.h, that
1943 NOTE: This is a major break of an old API into a new one. Software
1944 authors are encouraged to switch to the DES_ style functions. Some
1945 time in the future, des_old.h and the libdes compatibility functions
1946 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
1947 default), and then completely removed.
1950 *) Test for certificates which contain unsupported critical extensions.
1951 If such a certificate is found during a verify operation it is
1952 rejected by default: this behaviour can be overridden by either
1953 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
1954 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
1955 X509_supported_extension() has also been added which returns 1 if a
1956 particular extension is supported.
1959 *) Modify the behaviour of EVP cipher functions in similar way to digests
1960 to retain compatibility with existing code.
1963 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
1964 compatibility with existing code. In particular the 'ctx' parameter does
1965 not have to be to be initialized before the call to EVP_DigestInit() and
1966 it is tidied up after a call to EVP_DigestFinal(). New function
1967 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
1968 EVP_MD_CTX_copy() changed to not require the destination to be
1969 initialized valid and new function EVP_MD_CTX_copy_ex() added which
1970 requires the destination to be valid.
1972 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
1973 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
1976 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
1977 so that complete 'Handshake' protocol structures are kept in memory
1978 instead of overwriting 'msg_type' and 'length' with 'body' data.
1981 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
1982 [Massimo Santin via Richard Levitte]
1984 *) Major restructuring to the underlying ENGINE code. This includes
1985 reduction of linker bloat, separation of pure "ENGINE" manipulation
1986 (initialisation, etc) from functionality dealing with implementations
1987 of specific crypto iterfaces. This change also introduces integrated
1988 support for symmetric ciphers and digest implementations - so ENGINEs
1989 can now accelerate these by providing EVP_CIPHER and EVP_MD
1990 implementations of their own. This is detailed in crypto/engine/README
1991 as it couldn't be adequately described here. However, there are a few
1992 API changes worth noting - some RSA, DSA, DH, and RAND functions that
1993 were changed in the original introduction of ENGINE code have now
1994 reverted back - the hooking from this code to ENGINE is now a good
1995 deal more passive and at run-time, operations deal directly with
1996 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
1997 dereferencing through an ENGINE pointer any more. Also, the ENGINE
1998 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
1999 they were not being used by the framework as there is no concept of a
2000 BIGNUM_METHOD and they could not be generalised to the new
2001 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
2002 ENGINE_cpy() has been removed as it cannot be consistently defined in
2006 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
2009 *) Change mkdef.pl to sort symbols that get the same entry number,
2010 and make sure the automatically generated functions ERR_load_*
2011 become part of libeay.num as well.
2014 *) New function SSL_renegotiate_pending(). This returns true once
2015 renegotiation has been requested (either SSL_renegotiate() call
2016 or HelloRequest/ClientHello receveived from the peer) and becomes
2017 false once a handshake has been completed.
2018 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
2019 sends a HelloRequest, but does not ensure that a handshake takes
2020 place. SSL_renegotiate_pending() is useful for checking if the
2021 client has followed the request.)
2024 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
2025 By default, clients may request session resumption even during
2026 renegotiation (if session ID contexts permit); with this option,
2027 session resumption is possible only in the first handshake.
2029 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
2030 more bits available for options that should not be part of
2031 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
2034 *) Add some demos for certificate and certificate request creation.
2037 *) Make maximum certificate chain size accepted from the peer application
2038 settable (SSL*_get/set_max_cert_list()), as proposed by
2039 "Douglas E. Engert" <deengert@anl.gov>.
2042 *) Add support for shared libraries for Unixware-7
2043 (Boyd Lynn Gerber <gerberb@zenez.com>).
2046 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
2047 be done prior to destruction. Use this to unload error strings from
2048 ENGINEs that load their own error strings. NB: This adds two new API
2049 functions to "get" and "set" this destroy handler in an ENGINE.
2052 *) Alter all existing ENGINE implementations (except "openssl" and
2053 "openbsd") to dynamically instantiate their own error strings. This
2054 makes them more flexible to be built both as statically-linked ENGINEs
2055 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
2056 Also, add stub code to each that makes building them as self-contained
2057 shared-libraries easier (see README.ENGINE).
2060 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
2061 implementations into applications that are completely implemented in
2062 self-contained shared-libraries. The "dynamic" ENGINE exposes control
2063 commands that can be used to configure what shared-library to load and
2064 to control aspects of the way it is handled. Also, made an update to
2065 the README.ENGINE file that brings its information up-to-date and
2066 provides some information and instructions on the "dynamic" ENGINE
2067 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
2070 *) Make it possible to unload ranges of ERR strings with a new
2071 "ERR_unload_strings" function.
2074 *) Add a copy() function to EVP_MD.
2077 *) Make EVP_MD routines take a context pointer instead of just the
2078 md_data void pointer.
2081 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
2082 that the digest can only process a single chunk of data
2083 (typically because it is provided by a piece of
2084 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
2085 is only going to provide a single chunk of data, and hence the
2086 framework needn't accumulate the data for oneshot drivers.
2089 *) As with "ERR", make it possible to replace the underlying "ex_data"
2090 functions. This change also alters the storage and management of global
2091 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
2092 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
2093 index counters. The API functions that use this state have been changed
2094 to take a "class_index" rather than pointers to the class's local STACK
2095 and counter, and there is now an API function to dynamically create new
2096 classes. This centralisation allows us to (a) plug a lot of the
2097 thread-safety problems that existed, and (b) makes it possible to clean
2098 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
2099 such data would previously have always leaked in application code and
2100 workarounds were in place to make the memory debugging turn a blind eye
2101 to it. Application code that doesn't use this new function will still
2102 leak as before, but their memory debugging output will announce it now
2103 rather than letting it slide.
2105 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
2106 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
2107 has a return value to indicate success or failure.
2110 *) Make it possible to replace the underlying "ERR" functions such that the
2111 global state (2 LHASH tables and 2 locks) is only used by the "default"
2112 implementation. This change also adds two functions to "get" and "set"
2113 the implementation prior to it being automatically set the first time
2114 any other ERR function takes place. Ie. an application can call "get",
2115 pass the return value to a module it has just loaded, and that module
2116 can call its own "set" function using that value. This means the
2117 module's "ERR" operations will use (and modify) the error state in the
2118 application and not in its own statically linked copy of OpenSSL code.
2121 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
2122 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
2123 the operation, and provides a more encapsulated way for external code
2124 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
2125 to use these functions rather than manually incrementing the counts.
2127 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
2130 *) Add EVP test program.
2133 *) Add symmetric cipher support to ENGINE. Expect the API to change!
2136 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
2137 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
2138 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
2139 These allow a CRL to be built without having to access X509_CRL fields
2140 directly. Modify 'ca' application to use new functions.
2143 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
2144 bug workarounds. Rollback attack detection is a security feature.
2145 The problem will only arise on OpenSSL servers when TLSv1 is not
2146 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
2147 Software authors not wanting to support TLSv1 will have special reasons
2148 for their choice and can explicitly enable this option.
2149 [Bodo Moeller, Lutz Jaenicke]
2151 *) Rationalise EVP so it can be extended: don't include a union of
2152 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
2153 (similar to those existing for EVP_CIPHER_CTX).
2158 EVP_MD_CTX_init(&md); /* new function call */
2159 EVP_DigestInit(&md, EVP_sha1());
2160 EVP_DigestUpdate(&md, in, len);
2161 EVP_DigestFinal(&md, out, NULL);
2162 EVP_MD_CTX_cleanup(&md); /* new function call */
2166 *) Make DES key schedule conform to the usual scheme, as well as
2167 correcting its structure. This means that calls to DES functions
2168 now have to pass a pointer to a des_key_schedule instead of a
2169 plain des_key_schedule (which was actually always a pointer
2172 des_key_schedule ks;
2174 des_set_key_checked(..., &ks);
2175 des_ncbc_encrypt(..., &ks, ...);
2177 (Note that a later change renames 'des_...' into 'DES_...'.)
2180 *) Initial reduction of linker bloat: the use of some functions, such as
2181 PEM causes large amounts of unused functions to be linked in due to
2182 poor organisation. For example pem_all.c contains every PEM function
2183 which has a knock on effect of linking in large amounts of (unused)
2184 ASN1 code. Grouping together similar functions and splitting unrelated
2185 functions prevents this.
2188 *) Cleanup of EVP macros.
2191 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
2192 correct _ecb suffix.
2195 *) Add initial OCSP responder support to ocsp application. The
2196 revocation information is handled using the text based index
2197 use by the ca application. The responder can either handle
2198 requests generated internally, supplied in files (for example
2199 via a CGI script) or using an internal minimal server.
2202 *) Add configuration choices to get zlib compression for TLS.
2205 *) Changes to Kerberos SSL for RFC 2712 compliance:
2206 1. Implemented real KerberosWrapper, instead of just using
2207 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
2208 2. Implemented optional authenticator field of KerberosWrapper.
2210 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
2211 and authenticator structs; see crypto/krb5/.
2213 Generalized Kerberos calls to support multiple Kerberos libraries.
2214 [Vern Staats <staatsvr@asc.hpc.mil>,
2215 Jeffrey Altman <jaltman@columbia.edu>
2216 via Richard Levitte]
2218 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
2219 already does with RSA. testdsa.h now has 'priv_key/pub_key'
2220 values for each of the key sizes rather than having just
2221 parameters (and 'speed' generating keys each time).
2224 *) Speed up EVP routines.
2227 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
2228 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
2229 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
2230 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
2232 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
2233 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
2234 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
2237 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
2239 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
2242 *) Added the OS2-EMX target.
2243 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
2245 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
2246 to support NCONF routines in extension code. New function CONF_set_nconf()
2247 to allow functions which take an NCONF to also handle the old LHASH
2248 structure: this means that the old CONF compatible routines can be
2249 retained (in particular wrt extensions) without having to duplicate the
2250 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
2253 *) Enhance the general user interface with mechanisms for inner control
2254 and with possibilities to have yes/no kind of prompts.
2257 *) Change all calls to low level digest routines in the library and
2258 applications to use EVP. Add missing calls to HMAC_cleanup() and
2259 don't assume HMAC_CTX can be copied using memcpy().
2260 [Verdon Walker <VWalker@novell.com>, Steve Henson]
2262 *) Add the possibility to control engines through control names but with
2263 arbitrary arguments instead of just a string.
2264 Change the key loaders to take a UI_METHOD instead of a callback
2265 function pointer. NOTE: this breaks binary compatibility with earlier
2266 versions of OpenSSL [engine].
2267 Adapt the nCipher code for these new conditions and add a card insertion
2271 *) Enhance the general user interface with mechanisms to better support
2272 dialog box interfaces, application-defined prompts, the possibility
2273 to use defaults (for example default passwords from somewhere else)
2274 and interrupts/cancellations.
2277 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
2278 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
2281 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
2282 tidy up some unnecessarily weird code in 'sk_new()').
2283 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
2285 *) Change the key loading routines for ENGINEs to use the same kind
2286 callback (pem_password_cb) as all other routines that need this
2290 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
2291 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
2292 than this minimum value is recommended.
2295 *) New random seeder for OpenVMS, using the system process statistics
2296 that are easily reachable.
2299 *) Windows apparently can't transparently handle global
2300 variables defined in DLLs. Initialisations such as:
2302 const ASN1_ITEM *it = &ASN1_INTEGER_it;
2304 wont compile. This is used by the any applications that need to
2305 declare their own ASN1 modules. This was fixed by adding the option
2306 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
2307 needed for static libraries under Win32.
2310 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
2311 setting of purpose and trust fields. New X509_STORE trust and
2312 purpose functions and tidy up setting in other SSL functions.
2315 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
2316 structure. These are inherited by X509_STORE_CTX when it is
2317 initialised. This allows various defaults to be set in the
2318 X509_STORE structure (such as flags for CRL checking and custom
2319 purpose or trust settings) for functions which only use X509_STORE_CTX
2320 internally such as S/MIME.
2322 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
2323 trust settings if they are not set in X509_STORE. This allows X509_STORE
2324 purposes and trust (in S/MIME for example) to override any set by default.
2326 Add command line options for CRL checking to smime, s_client and s_server
2330 *) Initial CRL based revocation checking. If the CRL checking flag(s)
2331 are set then the CRL is looked up in the X509_STORE structure and
2332 its validity and signature checked, then if the certificate is found
2333 in the CRL the verify fails with a revoked error.
2335 Various new CRL related callbacks added to X509_STORE_CTX structure.
2337 Command line options added to 'verify' application to support this.
2339 This needs some additional work, such as being able to handle multiple
2340 CRLs with different times, extension based lookup (rather than just
2341 by subject name) and ultimately more complete V2 CRL extension
2345 *) Add a general user interface API (crypto/ui/). This is designed
2346 to replace things like des_read_password and friends (backward
2347 compatibility functions using this new API are provided).
2348 The purpose is to remove prompting functions from the DES code
2349 section as well as provide for prompting through dialog boxes in
2350 a window system and the like.
2353 *) Add "ex_data" support to ENGINE so implementations can add state at a
2354 per-structure level rather than having to store it globally.
2357 *) Make it possible for ENGINE structures to be copied when retrieved by
2358 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
2359 This causes the "original" ENGINE structure to act like a template,
2360 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
2361 operational state can be localised to each ENGINE structure, despite the
2362 fact they all share the same "methods". New ENGINE structures returned in
2363 this case have no functional references and the return value is the single
2364 structural reference. This matches the single structural reference returned
2365 by ENGINE_by_id() normally, when it is incremented on the pre-existing
2369 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
2370 needs to match any other type at all we need to manually clear the
2374 *) Changes to the "openssl engine" utility to include;
2375 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
2376 about an ENGINE's available control commands.
2377 - executing control commands from command line arguments using the
2378 '-pre' and '-post' switches. '-post' is only used if '-t' is
2379 specified and the ENGINE is successfully initialised. The syntax for
2380 the individual commands are colon-separated, for example;
2381 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
2384 *) New dynamic control command support for ENGINEs. ENGINEs can now
2385 declare their own commands (numbers), names (strings), descriptions,
2386 and input types for run-time discovery by calling applications. A
2387 subset of these commands are implicitly classed as "executable"
2388 depending on their input type, and only these can be invoked through
2389 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
2390 can be based on user input, config files, etc). The distinction is
2391 that "executable" commands cannot return anything other than a boolean
2392 result and can only support numeric or string input, whereas some
2393 discoverable commands may only be for direct use through
2394 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
2395 pointers, or other custom uses. The "executable" commands are to
2396 support parameterisations of ENGINE behaviour that can be
2397 unambiguously defined by ENGINEs and used consistently across any
2398 OpenSSL-based application. Commands have been added to all the
2399 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
2400 control over shared-library paths without source code alterations.
2403 *) Changed all ENGINE implementations to dynamically allocate their
2404 ENGINEs rather than declaring them statically. Apart from this being
2405 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
2406 this also allows the implementations to compile without using the
2407 internal engine_int.h header.
2410 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
2411 'const' value. Any code that should be able to modify a RAND_METHOD
2412 should already have non-const pointers to it (ie. they should only
2413 modify their own ones).
2416 *) Made a variety of little tweaks to the ENGINE code.
2417 - "atalla" and "ubsec" string definitions were moved from header files
2418 to C code. "nuron" string definitions were placed in variables
2419 rather than hard-coded - allowing parameterisation of these values
2420 later on via ctrl() commands.
2421 - Removed unused "#if 0"'d code.
2422 - Fixed engine list iteration code so it uses ENGINE_free() to release
2423 structural references.
2424 - Constified the RAND_METHOD element of ENGINE structures.
2425 - Constified various get/set functions as appropriate and added
2426 missing functions (including a catch-all ENGINE_cpy that duplicates
2427 all ENGINE values onto a new ENGINE except reference counts/state).
2428 - Removed NULL parameter checks in get/set functions. Setting a method
2429 or function to NULL is a way of cancelling out a previously set
2430 value. Passing a NULL ENGINE parameter is just plain stupid anyway
2431 and doesn't justify the extra error symbols and code.
2432 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
2433 flags from engine_int.h to engine.h.
2434 - Changed prototypes for ENGINE handler functions (init(), finish(),
2435 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
2438 *) Implement binary inversion algorithm for BN_mod_inverse in addition
2439 to the algorithm using long division. The binary algorithm can be
2440 used only if the modulus is odd. On 32-bit systems, it is faster
2441 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
2442 roughly 5-15% for 256-bit moduli), so we use it only for moduli
2443 up to 450 bits. In 64-bit environments, the binary algorithm
2444 appears to be advantageous for much longer moduli; here we use it
2445 for moduli up to 2048 bits.
2448 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
2449 could not support the combine flag in choice fields.
2452 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
2453 extensions from a certificate request to the certificate.
2456 *) Allow multiple 'certopt' and 'nameopt' options to be separated
2457 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
2458 file: this allows the display of the certificate about to be
2459 signed to be customised, to allow certain fields to be included
2460 or excluded and extension details. The old system didn't display
2461 multicharacter strings properly, omitted fields not in the policy
2462 and couldn't display additional details such as extensions.
2465 *) Function EC_POINTs_mul for multiple scalar multiplication
2466 of an arbitrary number of elliptic curve points
2467 \sum scalars[i]*points[i],
2468 optionally including the generator defined for the EC_GROUP:
2469 scalar*generator + \sum scalars[i]*points[i].
2471 EC_POINT_mul is a simple wrapper function for the typical case
2472 that the point list has just one item (besides the optional
2476 *) First EC_METHODs for curves over GF(p):
2478 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
2479 operations and provides various method functions that can also
2480 operate with faster implementations of modular arithmetic.
2482 EC_GFp_mont_method() reuses most functions that are part of
2483 EC_GFp_simple_method, but uses Montgomery arithmetic.
2485 [Bodo Moeller; point addition and point doubling
2486 implementation directly derived from source code provided by
2487 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
2489 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
2490 crypto/ec/ec_lib.c):
2492 Curves are EC_GROUP objects (with an optional group generator)
2493 based on EC_METHODs that are built into the library.
2495 Points are EC_POINT objects based on EC_GROUP objects.
2497 Most of the framework would be able to handle curves over arbitrary
2498 finite fields, but as there are no obvious types for fields other
2499 than GF(p), some functions are limited to that for now.
2502 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
2503 that the file contains a complete HTTP response.
2506 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
2507 change the def and num file printf format specifier from "%-40sXXX"
2508 to "%-39s XXX". The latter will always guarantee a space after the
2509 field while the former will cause them to run together if the field
2510 is 40 of more characters long.
2513 *) Constify the cipher and digest 'method' functions and structures
2514 and modify related functions to take constant EVP_MD and EVP_CIPHER
2518 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
2519 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
2522 *) Modify EVP_Digest*() routines so they now return values. Although the
2523 internal software routines can never fail additional hardware versions
2527 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
2529 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
2530 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
2533 ERR_R_NESTED_ASN1_ERROR
2535 ERR_R_MISSING_ASN1_EOS
2536 were 4 .. 9, conflicting with
2537 ERR_LIB_RSA (= ERR_R_RSA_LIB)
2539 ERR_LIB_PEM (= ERR_R_PEM_LIB).
2540 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
2542 Add new error code 'ERR_R_INTERNAL_ERROR'.
2545 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
2549 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
2550 sets the subject name for a new request or supersedes the
2551 subject name in a given request. Formats that can be parsed are
2552 'CN=Some Name, OU=myOU, C=IT'
2554 'CN=Some Name/OU=myOU/C=IT'.
2556 Add options '-batch' and '-verbose' to 'openssl req'.
2557 [Massimiliano Pala <madwolf@hackmasters.net>]
2559 *) Introduce the possibility to access global variables through
2560 functions on platform were that's the best way to handle exporting
2561 global variables in shared libraries. To enable this functionality,
2562 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
2563 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
2564 is normally done by Configure or something similar).
2566 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
2567 in the source file (foo.c) like this:
2569 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
2570 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
2572 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
2573 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
2575 OPENSSL_DECLARE_GLOBAL(int,foo);
2576 #define foo OPENSSL_GLOBAL_REF(foo)
2577 OPENSSL_DECLARE_GLOBAL(double,bar);
2578 #define bar OPENSSL_GLOBAL_REF(bar)
2580 The #defines are very important, and therefore so is including the
2581 header file everywhere where the defined globals are used.
2583 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
2584 of ASN.1 items, but that structure is a bit different.
2586 The largest change is in util/mkdef.pl which has been enhanced with
2587 better and easier to understand logic to choose which symbols should
2588 go into the Windows .def files as well as a number of fixes and code
2589 cleanup (among others, algorithm keywords are now sorted
2590 lexicographically to avoid constant rewrites).
2593 *) In BN_div() keep a copy of the sign of 'num' before writing the
2594 result to 'rm' because if rm==num the value will be overwritten
2595 and produce the wrong result if 'num' is negative: this caused
2596 problems with BN_mod() and BN_nnmod().
2599 *) Function OCSP_request_verify(). This checks the signature on an
2600 OCSP request and verifies the signer certificate. The signer
2601 certificate is just checked for a generic purpose and OCSP request
2605 *) Add OCSP_check_validity() function to check the validity of OCSP
2606 responses. OCSP responses are prepared in real time and may only
2607 be a few seconds old. Simply checking that the current time lies
2608 between thisUpdate and nextUpdate max reject otherwise valid responses
2609 caused by either OCSP responder or client clock inaccuracy. Instead
2610 we allow thisUpdate and nextUpdate to fall within a certain period of
2611 the current time. The age of the response can also optionally be
2612 checked. Two new options -validity_period and -status_age added to
2616 *) If signature or public key algorithm is unrecognized print out its
2617 OID rather that just UNKNOWN.
2620 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
2621 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
2622 ID to be generated from the issuer certificate alone which can then be
2623 passed to OCSP_id_issuer_cmp().
2626 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
2627 ASN1 modules to export functions returning ASN1_ITEM pointers
2628 instead of the ASN1_ITEM structures themselves. This adds several
2629 new macros which allow the underlying ASN1 function/structure to
2630 be accessed transparently. As a result code should not use ASN1_ITEM
2631 references directly (such as &X509_it) but instead use the relevant
2632 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
2633 use of the new ASN1 code on platforms where exporting structures
2634 is problematical (for example in shared libraries) but exporting
2635 functions returning pointers to structures is not.
2638 *) Add support for overriding the generation of SSL/TLS session IDs.
2639 These callbacks can be registered either in an SSL_CTX or per SSL.
2640 The purpose of this is to allow applications to control, if they wish,
2641 the arbitrary values chosen for use as session IDs, particularly as it
2642 can be useful for session caching in multiple-server environments. A
2643 command-line switch for testing this (and any client code that wishes
2644 to use such a feature) has been added to "s_server".
2645 [Geoff Thorpe, Lutz Jaenicke]
2647 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
2648 of the form '#if defined(...) || defined(...) || ...' and
2649 '#if !defined(...) && !defined(...) && ...'. This also avoids
2650 the growing number of special cases it was previously handling.
2653 *) Make all configuration macros available for application by making
2654 sure they are available in opensslconf.h, by giving them names starting
2655 with "OPENSSL_" to avoid conflicts with other packages and by making
2656 sure e_os2.h will cover all platform-specific cases together with
2658 Additionally, it is now possible to define configuration/platform-
2659 specific names (called "system identities"). In the C code, these
2660 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
2661 macro with the name beginning with "OPENSSL_SYS_", which is determined
2662 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
2666 *) New option -set_serial to 'req' and 'x509' this allows the serial
2667 number to use to be specified on the command line. Previously self
2668 signed certificates were hard coded with serial number 0 and the
2669 CA options of 'x509' had to use a serial number in a file which was
2673 *) New options to 'ca' utility to support V2 CRL entry extensions.
2674 Currently CRL reason, invalidity date and hold instruction are
2675 supported. Add new CRL extensions to V3 code and some new objects.
2678 *) New function EVP_CIPHER_CTX_set_padding() this is used to
2679 disable standard block padding (aka PKCS#5 padding) in the EVP
2680 API, which was previously mandatory. This means that the data is
2681 not padded in any way and so the total length much be a multiple
2682 of the block size, otherwise an error occurs.
2685 *) Initial (incomplete) OCSP SSL support.
2688 *) New function OCSP_parse_url(). This splits up a URL into its host,
2689 port and path components: primarily to parse OCSP URLs. New -url
2690 option to ocsp utility.
2693 *) New nonce behavior. The return value of OCSP_check_nonce() now
2694 reflects the various checks performed. Applications can decide
2695 whether to tolerate certain situations such as an absent nonce
2696 in a response when one was present in a request: the ocsp application
2697 just prints out a warning. New function OCSP_add1_basic_nonce()
2698 this is to allow responders to include a nonce in a response even if
2699 the request is nonce-less.
2702 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
2703 skipped when using openssl x509 multiple times on a single input file,
2704 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
2707 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
2708 set string type: to handle setting ASN1_TIME structures. Fix ca
2709 utility to correctly initialize revocation date of CRLs.
2712 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
2713 the clients preferred ciphersuites and rather use its own preferences.
2714 Should help to work around M$ SGC (Server Gated Cryptography) bug in
2715 Internet Explorer by ensuring unchanged hash method during stepup.
2716 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
2719 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
2720 to aes and add a new 'exist' option to print out symbols that don't
2724 *) Additional options to ocsp utility to allow flags to be set and
2725 additional certificates supplied.
2728 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
2729 OCSP client a number of certificate to only verify the response
2733 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
2734 handle the new API. Currently only ECB, CBC modes supported. Add new
2737 Add TLS AES ciphersuites as described in RFC3268, "Advanced
2738 Encryption Standard (AES) Ciphersuites for Transport Layer
2739 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
2740 not enabled by default and were not part of the "ALL" ciphersuite
2741 alias because they were not yet official; they could be
2742 explicitly requested by specifying the "AESdraft" ciphersuite
2743 group alias. In the final release of OpenSSL 0.9.7, the group
2744 alias is called "AES" and is part of "ALL".)
2745 [Ben Laurie, Steve Henson, Bodo Moeller]
2747 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
2748 request to response.
2751 *) Functions for OCSP responders. OCSP_request_onereq_count(),
2752 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
2753 extract information from a certificate request. OCSP_response_create()
2754 creates a response and optionally adds a basic response structure.
2755 OCSP_basic_add1_status() adds a complete single response to a basic
2756 response and returns the OCSP_SINGLERESP structure just added (to allow
2757 extensions to be included for example). OCSP_basic_add1_cert() adds a
2758 certificate to a basic response and OCSP_basic_sign() signs a basic
2759 response with various flags. New helper functions ASN1_TIME_check()
2760 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
2761 (converts ASN1_TIME to GeneralizedTime).
2764 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
2765 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
2766 structure from a certificate. X509_pubkey_digest() digests the public_key
2767 contents: this is used in various key identifiers.
2770 *) Make sk_sort() tolerate a NULL argument.
2771 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
2773 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
2774 passed by the function are trusted implicitly. If any of them signed the
2775 response then it is assumed to be valid and is not verified.
2778 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
2779 to data. This was previously part of the PKCS7 ASN1 code. This
2780 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
2781 [Steve Henson, reported by Kenneth R. Robinette
2782 <support@securenetterm.com>]
2784 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
2785 routines: without these tracing memory leaks is very painful.
2786 Fix leaks in PKCS12 and PKCS7 routines.
2789 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
2790 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
2791 effectively meant GeneralizedTime would never be used. Now it
2792 is initialised to -1 but X509_time_adj() now has to check the value
2793 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
2794 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
2795 [Steve Henson, reported by Kenneth R. Robinette
2796 <support@securenetterm.com>]
2798 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
2799 result in a zero length in the ASN1_INTEGER structure which was
2800 not consistent with the structure when d2i_ASN1_INTEGER() was used
2801 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
2802 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
2803 where it did not print out a minus for negative ASN1_INTEGER.
2806 *) Add summary printout to ocsp utility. The various functions which
2807 convert status values to strings have been renamed to:
2808 OCSP_response_status_str(), OCSP_cert_status_str() and
2809 OCSP_crl_reason_str() and are no longer static. New options
2810 to verify nonce values and to disable verification. OCSP response
2811 printout format cleaned up.
2814 *) Add additional OCSP certificate checks. These are those specified
2815 in RFC2560. This consists of two separate checks: the CA of the
2816 certificate being checked must either be the OCSP signer certificate
2817 or the issuer of the OCSP signer certificate. In the latter case the
2818 OCSP signer certificate must contain the OCSP signing extended key
2819 usage. This check is performed by attempting to match the OCSP
2820 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
2821 in the OCSP_CERTID structures of the response.
2824 *) Initial OCSP certificate verification added to OCSP_basic_verify()
2825 and related routines. This uses the standard OpenSSL certificate
2826 verify routines to perform initial checks (just CA validity) and
2827 to obtain the certificate chain. Then additional checks will be
2828 performed on the chain. Currently the root CA is checked to see
2829 if it is explicitly trusted for OCSP signing. This is used to set
2830 a root CA as a global signing root: that is any certificate that
2831 chains to that CA is an acceptable OCSP signing certificate.
2834 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
2835 extensions from a separate configuration file.
2836 As when reading extensions from the main configuration file,
2837 the '-extensions ...' option may be used for specifying the
2839 [Massimiliano Pala <madwolf@comune.modena.it>]
2841 *) New OCSP utility. Allows OCSP requests to be generated or
2842 read. The request can be sent to a responder and the output
2843 parsed, outputed or printed in text form. Not complete yet:
2844 still needs to check the OCSP response validity.
2847 *) New subcommands for 'openssl ca':
2848 'openssl ca -status <serial>' prints the status of the cert with
2849 the given serial number (according to the index file).
2850 'openssl ca -updatedb' updates the expiry status of certificates
2852 [Massimiliano Pala <madwolf@comune.modena.it>]
2854 *) New '-newreq-nodes' command option to CA.pl. This is like
2855 '-newreq', but calls 'openssl req' with the '-nodes' option
2856 so that the resulting key is not encrypted.
2857 [Damien Miller <djm@mindrot.org>]
2859 *) New configuration for the GNU Hurd.
2860 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
2862 *) Initial code to implement OCSP basic response verify. This
2863 is currently incomplete. Currently just finds the signer's
2864 certificate and verifies the signature on the response.
2867 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
2868 value of OPENSSLDIR. This is available via the new '-d' option
2869 to 'openssl version', and is also included in 'openssl version -a'.
2872 *) Allowing defining memory allocation callbacks that will be given
2873 file name and line number information in additional arguments
2874 (a const char* and an int). The basic functionality remains, as
2875 well as the original possibility to just replace malloc(),
2876 realloc() and free() by functions that do not know about these
2877 additional arguments. To register and find out the current
2878 settings for extended allocation functions, the following
2879 functions are provided:
2881 CRYPTO_set_mem_ex_functions
2882 CRYPTO_set_locked_mem_ex_functions
2883 CRYPTO_get_mem_ex_functions
2884 CRYPTO_get_locked_mem_ex_functions
2886 These work the same way as CRYPTO_set_mem_functions and friends.
2887 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
2888 extended allocation function is enabled.
2889 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
2890 a conventional allocation function is enabled.
2891 [Richard Levitte, Bodo Moeller]
2893 *) Finish off removing the remaining LHASH function pointer casts.
2894 There should no longer be any prototype-casting required when using
2895 the LHASH abstraction, and any casts that remain are "bugs". See
2896 the callback types and macros at the head of lhash.h for details
2897 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
2900 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
2901 If /dev/[u]random devices are not available or do not return enough
2902 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
2904 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
2905 /etc/entropy will be queried once each in this sequence, quering stops
2906 when enough entropy was collected without querying more sockets.
2909 *) Change the Unix RAND_poll() variant to be able to poll several
2910 random devices, as specified by DEVRANDOM, until a sufficient amount
2911 of data has been collected. We spend at most 10 ms on each file
2912 (select timeout) and read in non-blocking mode. DEVRANDOM now
2913 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
2914 (previously it was just the string "/dev/urandom"), so on typical
2915 platforms the 10 ms delay will never occur.
2916 Also separate out the Unix variant to its own file, rand_unix.c.
2917 For VMS, there's a currently-empty rand_vms.c.
2920 *) Move OCSP client related routines to ocsp_cl.c. These
2921 provide utility functions which an application needing
2922 to issue a request to an OCSP responder and analyse the
2923 response will typically need: as opposed to those which an
2924 OCSP responder itself would need which will be added later.
2926 OCSP_request_sign() signs an OCSP request with an API similar
2927 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
2928 response. OCSP_response_get1_basic() extracts basic response
2929 from response. OCSP_resp_find_status(): finds and extracts status
2930 information from an OCSP_CERTID structure (which will be created
2931 when the request structure is built). These are built from lower
2932 level functions which work on OCSP_SINGLERESP structures but
2933 wont normally be used unless the application wishes to examine
2934 extensions in the OCSP response for example.
2936 Replace nonce routines with a pair of functions.
2937 OCSP_request_add1_nonce() adds a nonce value and optionally
2938 generates a random value. OCSP_check_nonce() checks the
2939 validity of the nonce in an OCSP response.
2942 *) Change function OCSP_request_add() to OCSP_request_add0_id().
2943 This doesn't copy the supplied OCSP_CERTID and avoids the
2944 need to free up the newly created id. Change return type
2945 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
2946 This can then be used to add extensions to the request.
2947 Deleted OCSP_request_new(), since most of its functionality
2948 is now in OCSP_REQUEST_new() (and the case insensitive name
2949 clash) apart from the ability to set the request name which
2950 will be added elsewhere.
2953 *) Update OCSP API. Remove obsolete extensions argument from
2954 various functions. Extensions are now handled using the new
2955 OCSP extension code. New simple OCSP HTTP function which
2956 can be used to send requests and parse the response.
2959 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
2960 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
2961 uses the special reorder version of SET OF to sort the attributes
2962 and reorder them to match the encoded order. This resolves a long
2963 standing problem: a verify on a PKCS7 structure just after signing
2964 it used to fail because the attribute order did not match the
2965 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
2966 it uses the received order. This is necessary to tolerate some broken
2967 software that does not order SET OF. This is handled by encoding
2968 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
2969 to produce the required SET OF.
2972 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
2973 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
2974 files to get correct declarations of the ASN.1 item variables.
2977 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
2978 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
2979 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
2980 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
2981 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
2982 ASN1_ITEM and no wrapper functions.
2985 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
2986 replace the old function pointer based I/O routines. Change most of
2987 the *_d2i_bio() and *_d2i_fp() functions to use these.
2990 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
2991 lines, recognice more "algorithms" that can be deselected, and make
2992 it complain about algorithm deselection that isn't recognised.
2995 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
2996 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
2997 to use new functions. Add NO_ASN1_OLD which can be set to remove
2998 some old style ASN1 functions: this can be used to determine if old
2999 code will still work when these eventually go away.
3002 *) New extension functions for OCSP structures, these follow the
3003 same conventions as certificates and CRLs.
3006 *) New function X509V3_add1_i2d(). This automatically encodes and
3007 adds an extension. Its behaviour can be customised with various
3008 flags to append, replace or delete. Various wrappers added for
3009 certifcates and CRLs.
3012 *) Fix to avoid calling the underlying ASN1 print routine when
3013 an extension cannot be parsed. Correct a typo in the
3014 OCSP_SERVICELOC extension. Tidy up print OCSP format.
3017 *) Make mkdef.pl parse some of the ASN1 macros and add apropriate
3018 entries for variables.
3021 *) Add functionality to apps/openssl.c for detecting locking
3022 problems: As the program is single-threaded, all we have
3023 to do is register a locking callback using an array for
3024 storing which locks are currently held by the program.
3027 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
3028 SSL_get_ex_data_X509_STORE_idx(), which is used in
3029 ssl_verify_cert_chain() and thus can be called at any time
3030 during TLS/SSL handshakes so that thread-safety is essential.
3031 Unfortunately, the ex_data design is not at all suited
3032 for multi-threaded use, so it probably should be abolished.
3035 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
3036 [Broadcom, tweaked and integrated by Geoff Thorpe]
3038 *) Move common extension printing code to new function
3039 X509V3_print_extensions(). Reorganise OCSP print routines and
3040 implement some needed OCSP ASN1 functions. Add OCSP extensions.
3043 *) New function X509_signature_print() to remove duplication in some
3047 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
3048 set (this was treated exactly the same as SET OF previously). This
3049 is used to reorder the STACK representing the structure to match the
3050 encoding. This will be used to get round a problem where a PKCS7
3051 structure which was signed could not be verified because the STACK
3052 order did not reflect the encoded order.
3055 *) Reimplement the OCSP ASN1 module using the new code.
3058 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
3059 for its ASN1 operations. The old style function pointers still exist
3060 for now but they will eventually go away.
3063 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
3064 completely replaces the old ASN1 functionality with a table driven
3065 encoder and decoder which interprets an ASN1_ITEM structure describing
3066 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
3067 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
3068 has also been converted to the new form.
3071 *) Change BN_mod_exp_recp so that negative moduli are tolerated
3072 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
3073 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
3074 for negative moduli.
3077 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
3078 of not touching the result's sign bit.
3081 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
3085 *) Changed the LHASH code to use prototypes for callbacks, and created
3086 macros to declare and implement thin (optionally static) functions
3087 that provide type-safety and avoid function pointer casting for the
3088 type-specific callbacks.
3091 *) Added Kerberos Cipher Suites to be used with TLS, as written in
3093 [Veers Staats <staatsvr@asc.hpc.mil>,
3094 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
3096 *) Reformat the FAQ so the different questions and answers can be divided
3097 in sections depending on the subject.
3100 *) Have the zlib compression code load ZLIB.DLL dynamically under
3104 *) New function BN_mod_sqrt for computing square roots modulo a prime
3105 (using the probabilistic Tonelli-Shanks algorithm unless
3106 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
3107 be handled deterministically).
3108 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
3110 *) Make BN_mod_inverse faster by explicitly handling small quotients
3111 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
3112 512 bits], about 30% for larger ones [1024 or 2048 bits].)
3115 *) New function BN_kronecker.
3118 *) Fix BN_gcd so that it works on negative inputs; the result is
3119 positive unless both parameters are zero.
3120 Previously something reasonably close to an infinite loop was
3121 possible because numbers could be growing instead of shrinking
3122 in the implementation of Euclid's algorithm.
3125 *) Fix BN_is_word() and BN_is_one() macros to take into account the
3126 sign of the number in question.
3128 Fix BN_is_word(a,w) to work correctly for w == 0.
3130 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
3131 because its test if the absolute value of 'a' equals 'w'.
3132 Note that BN_abs_is_word does *not* handle w == 0 reliably;
3133 it exists mostly for use in the implementations of BN_is_zero(),
3134 BN_is_one(), and BN_is_word().
3137 *) New function BN_swap.
3140 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
3141 the exponentiation functions are more likely to produce reasonable
3142 results on negative inputs.
3145 *) Change BN_mod_mul so that the result is always non-negative.
3146 Previously, it could be negative if one of the factors was negative;
3147 I don't think anyone really wanted that behaviour.
3150 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
3151 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
3152 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
3153 and add new functions:
3162 BN_mod_lshift1_quick
3166 These functions always generate non-negative results.
3168 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
3169 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
3171 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
3172 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
3173 be reduced modulo m.
3174 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
3177 The following entry accidentily appeared in the CHANGES file
3178 distributed with OpenSSL 0.9.7. The modifications described in
3179 it do *not* apply to OpenSSL 0.9.7.
3181 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
3182 was actually never needed) and in BN_mul(). The removal in BN_mul()
3183 required a small change in bn_mul_part_recursive() and the addition
3184 of the functions bn_cmp_part_words(), bn_sub_part_words() and
3185 bn_add_part_words(), which do the same thing as bn_cmp_words(),
3186 bn_sub_words() and bn_add_words() except they take arrays with
3191 *) In 'openssl passwd', verify passwords read from the terminal
3192 unless the '-salt' option is used (which usually means that
3193 verification would just waste user's time since the resulting
3194 hash is going to be compared with some given password hash)
3195 or the new '-noverify' option is used.
3197 This is an incompatible change, but it does not affect
3198 non-interactive use of 'openssl passwd' (passwords on the command
3199 line, '-stdin' option, '-in ...' option) and thus should not
3203 *) Remove all references to RSAref, since there's no more need for it.
3206 *) Make DSO load along a path given through an environment variable
3207 (SHLIB_PATH) with shl_load().
3210 *) Constify the ENGINE code as a result of BIGNUM constification.
3211 Also constify the RSA code and most things related to it. In a
3212 few places, most notable in the depth of the ASN.1 code, ugly
3213 casts back to non-const were required (to be solved at a later
3217 *) Make it so the openssl application has all engines loaded by default.
3220 *) Constify the BIGNUM routines a little more.
3223 *) Add the following functions:
3225 ENGINE_load_cswift()
3227 ENGINE_load_atalla()
3229 ENGINE_load_builtin_engines()
3231 That way, an application can itself choose if external engines that
3232 are built-in in OpenSSL shall ever be used or not. The benefit is
3233 that applications won't have to be linked with libdl or other dso
3234 libraries unless it's really needed.
3236 Changed 'openssl engine' to load all engines on demand.
3237 Changed the engine header files to avoid the duplication of some
3238 declarations (they differed!).
3241 *) 'openssl engine' can now list capabilities.
3244 *) Better error reporting in 'openssl engine'.
3247 *) Never call load_dh_param(NULL) in s_server.
3250 *) Add engine application. It can currently list engines by name and
3251 identity, and test if they are actually available.
3254 *) Improve RPM specification file by forcing symbolic linking and making
3255 sure the installed documentation is also owned by root.root.
3256 [Damien Miller <djm@mindrot.org>]
3258 *) Give the OpenSSL applications more possibilities to make use of
3259 keys (public as well as private) handled by engines.
3262 *) Add OCSP code that comes from CertCo.
3265 *) Add VMS support for the Rijndael code.
3268 *) Added untested support for Nuron crypto accelerator.
3271 *) Add support for external cryptographic devices. This code was
3272 previously distributed separately as the "engine" branch.
3273 [Geoff Thorpe, Richard Levitte]
3275 *) Rework the filename-translation in the DSO code. It is now possible to
3276 have far greater control over how a "name" is turned into a filename
3277 depending on the operating environment and any oddities about the
3278 different shared library filenames on each system.
3281 *) Support threads on FreeBSD-elf in Configure.
3284 *) Fix for SHA1 assembly problem with MASM: it produces
3285 warnings about corrupt line number information when assembling
3286 with debugging information. This is caused by the overlapping
3288 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
3291 NCONF_get_number() has no error checking at all. As a replacement,
3292 NCONF_get_number_e() is defined (_e for "error checking") and is
3293 promoted strongly. The old NCONF_get_number is kept around for
3294 binary backward compatibility.
3295 Make it possible for methods to load from something other than a BIO,
3296 by providing a function pointer that is given a name instead of a BIO.
3297 For example, this could be used to load configuration data from an
3301 *) Fix for non blocking accept BIOs. Added new I/O special reason
3302 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
3303 with non blocking I/O was not possible because no retry code was
3304 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
3308 *) Added the beginnings of Rijndael support.
3311 *) Fix for bug in DirectoryString mask setting. Add support for
3312 X509_NAME_print_ex() in 'req' and X509_print_ex() function
3313 to allow certificate printing to more controllable, additional
3314 'certopt' option to 'x509' to allow new printing options to be
3318 *) Clean old EAY MD5 hack from e_os.h.
3321 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
3323 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
3324 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
3325 [Joe Orton, Steve Henson]
3327 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
3329 *) Fix additional bug revealed by the NISCC test suite:
3331 Stop bug triggering large recursion when presented with
3332 certain ASN.1 tags (CVE-2003-0851)
3335 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
3337 *) Fix various bugs revealed by running the NISCC test suite:
3339 Stop out of bounds reads in the ASN1 code when presented with
3340 invalid tags (CVE-2003-0543 and CVE-2003-0544).
3342 If verify callback ignores invalid public key errors don't try to check
3343 certificate signature with the NULL public key.
3347 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
3348 if the server requested one: as stated in TLS 1.0 and SSL 3.0
3352 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
3353 extra data after the compression methods not only for TLS 1.0
3354 but also for SSL 3.0 (as required by the specification).
3355 [Bodo Moeller; problem pointed out by Matthias Loepfe]
3357 *) Change X509_certificate_type() to mark the key as exported/exportable
3358 when it's 512 *bits* long, not 512 bytes.
3361 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
3363 *) Countermeasure against the Klima-Pokorny-Rosa extension of
3364 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
3365 a protocol version number mismatch like a decryption error
3366 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
3369 *) Turn on RSA blinding by default in the default implementation
3370 to avoid a timing attack. Applications that don't want it can call
3371 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
3372 They would be ill-advised to do so in most cases.
3373 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
3375 *) Change RSA blinding code so that it works when the PRNG is not
3376 seeded (in this case, the secret RSA exponent is abused as
3377 an unpredictable seed -- if it is not unpredictable, there
3378 is no point in blinding anyway). Make RSA blinding thread-safe
3379 by remembering the creator's thread ID in rsa->blinding and
3380 having all other threads use local one-time blinding factors
3381 (this requires more computation than sharing rsa->blinding, but
3382 avoids excessive locking; and if an RSA object is not shared
3383 between threads, blinding will still be very fast).
3386 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
3388 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
3389 via timing by performing a MAC computation even if incorrrect
3390 block cipher padding has been found. This is a countermeasure
3391 against active attacks where the attacker has to distinguish
3392 between bad padding and a MAC verification error. (CVE-2003-0078)
3394 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
3395 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
3396 Martin Vuagnoux (EPFL, Ilion)]
3398 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
3400 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
3401 memory from it's contents. This is done with a counter that will
3402 place alternating values in each byte. This can be used to solve
3403 two issues: 1) the removal of calls to memset() by highly optimizing
3404 compilers, and 2) cleansing with other values than 0, since those can
3405 be read through on certain media, for example a swap space on disk.
3408 *) Bugfix: client side session caching did not work with external caching,
3409 because the session->cipher setting was not restored when reloading
3410 from the external cache. This problem was masked, when
3411 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
3412 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
3415 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
3416 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
3417 [Zeev Lieber <zeev-l@yahoo.com>]
3419 *) Undo an undocumented change introduced in 0.9.6e which caused
3420 repeated calls to OpenSSL_add_all_ciphers() and
3421 OpenSSL_add_all_digests() to be ignored, even after calling
3425 *) Change the default configuration reader to deal with last line not
3426 being properly terminated.
3429 *) Change X509_NAME_cmp() so it applies the special rules on handling
3430 DN values that are of type PrintableString, as well as RDNs of type
3431 emailAddress where the value has the type ia5String.
3432 [stefank@valicert.com via Richard Levitte]
3434 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
3435 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
3436 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
3437 the bitwise-OR of the two for use by the majority of applications
3438 wanting this behaviour, and update the docs. The documented
3439 behaviour and actual behaviour were inconsistent and had been
3440 changing anyway, so this is more a bug-fix than a behavioural
3442 [Geoff Thorpe, diagnosed by Nadav Har'El]
3444 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
3445 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
3448 *) Fix initialization code race conditions in
3449 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
3450 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
3451 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
3452 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
3453 ssl2_get_cipher_by_char(),
3454 ssl3_get_cipher_by_char().
3455 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
3457 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
3458 the cached sessions are flushed, as the remove_cb() might use ex_data
3459 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
3460 (see [openssl.org #212]).
3461 [Geoff Thorpe, Lutz Jaenicke]
3463 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
3464 length, instead of the encoding length to d2i_ASN1_OBJECT.
3467 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
3469 *) [In 0.9.6g-engine release:]
3470 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
3471 [Lynn Gazis <lgazis@rainbow.com>]
3473 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
3475 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
3476 and get fix the header length calculation.
3477 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
3478 Alon Kantor <alonk@checkpoint.com> (and others),
3481 *) Use proper error handling instead of 'assertions' in buffer
3482 overflow checks added in 0.9.6e. This prevents DoS (the
3483 assertions could call abort()).
3484 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
3486 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
3488 *) Add various sanity checks to asn1_get_length() to reject
3489 the ASN1 length bytes if they exceed sizeof(long), will appear
3490 negative or the content length exceeds the length of the
3492 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
3494 *) Fix cipher selection routines: ciphers without encryption had no flags
3495 for the cipher strength set and where therefore not handled correctly
3496 by the selection routines (PR #130).
3499 *) Fix EVP_dsa_sha macro.
3503 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
3504 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
3505 that was added in OpenSSL 0.9.6d.
3507 As the countermeasure turned out to be incompatible with some
3508 broken SSL implementations, the new option is part of SSL_OP_ALL.
3509 SSL_OP_ALL is usually employed when compatibility with weird SSL
3510 implementations is desired (e.g. '-bugs' option to 's_client' and
3511 's_server'), so the new option is automatically set in many
3515 *) Changes in security patch:
3517 Changes marked "(CHATS)" were sponsored by the Defense Advanced
3518 Research Projects Agency (DARPA) and Air Force Research Laboratory,
3519 Air Force Materiel Command, USAF, under agreement number
3522 *) Add various sanity checks to asn1_get_length() to reject
3523 the ASN1 length bytes if they exceed sizeof(long), will appear
3524 negative or the content length exceeds the length of the
3525 supplied buffer. (CVE-2002-0659)
3526 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
3528 *) Assertions for various potential buffer overflows, not known to
3530 [Ben Laurie (CHATS)]
3532 *) Various temporary buffers to hold ASCII versions of integers were
3533 too small for 64 bit platforms. (CVE-2002-0655)
3534 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
3536 *) Remote buffer overflow in SSL3 protocol - an attacker could
3537 supply an oversized session ID to a client. (CVE-2002-0656)
3538 [Ben Laurie (CHATS)]
3540 *) Remote buffer overflow in SSL2 protocol - an attacker could
3541 supply an oversized client master key. (CVE-2002-0656)
3542 [Ben Laurie (CHATS)]
3544 Changes between 0.9.6c and 0.9.6d [9 May 2002]
3546 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
3547 encoded as NULL) with id-dsa-with-sha1.
3548 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
3550 *) Check various X509_...() return values in apps/req.c.
3551 [Nils Larsch <nla@trustcenter.de>]
3553 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
3554 an end-of-file condition would erronously be flagged, when the CRLF
3555 was just at the end of a processed block. The bug was discovered when
3556 processing data through a buffering memory BIO handing the data to a
3557 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
3558 <ptsekov@syntrex.com> and Nedelcho Stanev.
3561 *) Implement a countermeasure against a vulnerability recently found
3562 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
3563 before application data chunks to avoid the use of known IVs
3564 with data potentially chosen by the attacker.
3567 *) Fix length checks in ssl3_get_client_hello().
3570 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
3571 to prevent ssl3_read_internal() from incorrectly assuming that
3572 ssl3_read_bytes() found application data while handshake
3573 processing was enabled when in fact s->s3->in_read_app_data was
3574 merely automatically cleared during the initial handshake.
3575 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
3577 *) Fix object definitions for Private and Enterprise: they were not
3578 recognized in their shortname (=lowercase) representation. Extend
3579 obj_dat.pl to issue an error when using undefined keywords instead
3580 of silently ignoring the problem (Svenning Sorensen
3581 <sss@sss.dnsalias.net>).
3584 *) Fix DH_generate_parameters() so that it works for 'non-standard'
3585 generators, i.e. generators other than 2 and 5. (Previously, the
3586 code did not properly initialise the 'add' and 'rem' values to
3587 BN_generate_prime().)
3589 In the new general case, we do not insist that 'generator' is
3590 actually a primitive root: This requirement is rather pointless;
3591 a generator of the order-q subgroup is just as good, if not
projects / openssl.git / blob