5 Changes between 0.9.8b and 0.9.9 [xx XXX xxxx]
7 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
8 Reorganize PBE internals to lookup from a static table using NIDs,
9 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
10 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
11 PRF which will be automatically used with PBES2.
14 *) Replace the algorithm specific calls to generate keys in "req" with the
18 *) Update PKCS#7 enveloped data routines to use new API. This is now
19 supported by any public key method supporting the encrypt operation. A
20 ctrl is added to allow the public key algorithm to examine or modify
21 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
25 *) Add a ctrl to asn1 method to allow a public key algorithm to express
26 a default digest type to use. In most cases this will be SHA1 but some
27 algorithms (such as GOST) need to specify an alternative digest. The
28 return value indicates how strong the prefernce is 1 means optional and
29 2 is mandatory (that is it is the only supported type). Modify
30 ASN1_item_sign() to accept a NULL digest argument to indicate it should
31 use the default md. Update openssl utilities to use the default digest
32 type for signing if it is not explicitly indicated.
35 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
36 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
37 signing method from the key type. This effectively removes the link
38 between digests and public key types.
41 *) Add an OID cross reference table and utility functions. Its purpose is to
42 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
43 rsaEncryption. This will allow some of the algorithm specific hackery
44 needed to use the correct OID to be removed.
47 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
48 structures for PKCS7_sign(). They are now set up by the relevant public
52 *) Add provisional EC pkey method with support for ECDSA and ECDH.
55 *) Add support for key derivation (agreement) in the API, DH method and
59 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
60 public and private key formats. As a side effect these add additional
61 command line functionality not previously available: DSA signatures can be
62 generated and verified using pkeyutl and DH key support and generation in
67 [Oliver Tappe <zooey@hirschkaefer.de>]
69 *) New make target "install_html_docs" installs HTML renditions of the
71 [Oliver Tappe <zooey@hirschkaefer.de>]
73 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
74 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
75 support key and parameter generation and add initial key generation
76 functionality for RSA.
79 *) Add functions for main EVP_PKEY_method operations. The undocumented
80 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
81 EVP_PKEY_{encrypt,decrypt}_old.
84 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
85 key API, doesn't do much yet.
88 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
89 public key algorithms. New option to openssl utility:
90 "list-public-key-algorithms" to print out info.
93 *) Implement the Supported Elliptic Curves Extension for
94 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
97 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
98 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
101 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
102 utilities such as rsa, dsa, dsaparam etc except they process any key
106 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
107 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
108 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
112 *) Initial support for pluggable public key ASN1.
113 De-spaghettify the public key ASN1 handling. Move public and private
114 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
115 algorithm specific handling to a single module within the relevant
116 algorithm directory. Add functions to allow (near) opaque processing
117 of public and private key structures.
120 *) Implement the Supported Point Formats Extension for
121 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
124 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
125 for the psk identity [hint] and the psk callback functions to the
126 SSL_SESSION, SSL and SSL_CTX structure.
129 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
133 SSL_CTX_use_psk_identity_hint
134 SSL_get_psk_identity_hint
136 SSL_use_psk_identity_hint
138 [Mika Kousa and Pasi Eronen of Nokia Corporation]
140 *) Add RFC 3161 compliant time stamp request creation, response generation
141 and response verification functionality.
142 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
144 *) Add initial support for TLS extensions, specifically for the server_name
145 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
146 have new members for a host name. The SSL data structure has an
147 additional member SSL_CTX *initial_ctx so that new sessions can be
148 stored in that context to allow for session resumption, even after the
149 SSL has been switched to a new SSL_CTX in reaction to a client's
150 server_name extension.
152 New functions (subject to change):
155 SSL_get_servername_type()
158 New CTRL codes and macros (subject to change):
160 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
161 - SSL_CTX_set_tlsext_servername_callback()
162 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
163 - SSL_CTX_set_tlsext_servername_arg()
164 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_hostname()
166 openssl s_client has a new '-servername ...' option.
168 openssl s_server has new options '-servername_host ...', '-cert2 ...',
169 '-key2 ...', '-servername_fatal' (subject to change). This allows
170 testing the HostName extension for a specific single host name ('-cert'
171 and '-key' remain fallbacks for handshakes without HostName
172 negotiation). If the unrecogninzed_name alert has to be sent, this by
173 default is a warning; it becomes fatal with the '-servername_fatal'
176 [Peter Sylvester, Remy Allais, Christophe Renou]
178 *) Whirlpool hash implementation is added.
181 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
182 bn(64,32). Because of instruction set limitations it doesn't have
183 any negative impact on performance. This was done mostly in order
184 to make it possible to share assembler modules, such as bn_mul_mont
185 implementations, between 32- and 64-bit builds without hassle.
188 *) Disable rogue ciphersuites:
190 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
191 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
192 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
194 The latter two were purportedly from
195 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
198 Other ciphersuites from draft-ietf-tls-56-bit-ciphersuites-01.txt
199 remain enabled for now, but are just as unofficial, and the ID
200 has long expired; these will probably disappear soon.
203 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
204 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
208 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
209 dedicated Montgomery multiplication procedure, is introduced.
210 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
211 "64-bit" performance on certain 32-bit targets.
214 *) New option SSL_OP_NO_COMP to disable use of compression selectively
215 in SSL structures. New SSL ctrl to set maximum send fragment size.
216 Save memory by seeting the I/O buffer sizes dynamically instead of
217 using the maximum available value.
220 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
221 in addition to the text details.
224 *) Very, very preliminary EXPERIMENTAL support for printing of general
225 ASN1 structures. This currently produces rather ugly output and doesn't
226 handle several customised structures at all.
229 *) Integrated support for PVK file format and some related formats such
230 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
231 these in the 'rsa' and 'dsa' utilities.
234 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
237 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
238 place for the (very old) "NETSCAPE" format certificates which are now
239 handled using new ASN1 code equivalents.
242 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
243 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
244 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
247 *) Modify CRL distribution points extension code to print out previously
248 unsupported fields. Enhance extension setting code to allow setting of
252 *) Add print and set support for Issuing Distribution Point CRL extension.
255 Changes between 0.9.8b and 0.9.8c [xx XXX xxxx]
257 *) Disable the padding bug check when compression is in use. The padding
258 bug check assumes the first packet is of even length, this is not
259 necessarily true if compresssion is enabled and can result in false
260 positives causing handshake failure. The actual bug test is ancient
261 code so it is hoped that implementations will either have fixed it by
262 now or any which still have the bug do not support compression.
265 Changes between 0.9.8a and 0.9.8b [04 May 2006]
267 *) When applying a cipher rule check to see if string match is an explicit
268 cipher suite and only match that one cipher suite if it is.
271 *) Link in manifests for VC++ if needed.
272 [Austin Ziegler <halostatue@gmail.com>]
274 *) Update support for ECC-based TLS ciphersuites according to
275 draft-ietf-tls-ecc-12.txt with proposed changes (but without
276 TLS extensions, which are supported starting with the 0.9.9
277 branch, not in the OpenSSL 0.9.8 branch).
280 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
281 opaque EVP_CIPHER_CTX handling.
284 *) Fixes and enhancements to zlib compression code. We now only use
285 "zlib1.dll" and use the default __cdecl calling convention on Win32
286 to conform with the standards mentioned here:
287 http://www.zlib.net/DLL_FAQ.txt
288 Static zlib linking now works on Windows and the new --with-zlib-include
289 --with-zlib-lib options to Configure can be used to supply the location
290 of the headers and library. Gracefully handle case where zlib library
294 *) Several fixes and enhancements to the OID generation code. The old code
295 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
296 handle numbers larger than ULONG_MAX, truncated printing and had a
297 non standard OBJ_obj2txt() behaviour.
300 *) Add support for building of engines under engine/ as shared libraries
301 under VC++ build system.
304 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
305 Hopefully, we will not see any false combination of paths any more.
308 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
310 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
311 (part of SSL_OP_ALL). This option used to disable the
312 countermeasure against man-in-the-middle protocol-version
313 rollback in the SSL 2.0 server implementation, which is a bad
314 idea. (CVE-2005-2969)
316 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
317 for Information Security, National Institute of Advanced Industrial
318 Science and Technology [AIST], Japan)]
320 *) Add two function to clear and return the verify parameter flags.
323 *) Keep cipherlists sorted in the source instead of sorting them at
324 runtime, thus removing the need for a lock.
327 *) Avoid some small subgroup attacks in Diffie-Hellman.
328 [Nick Mathewson and Ben Laurie]
330 *) Add functions for well-known primes.
333 *) Extended Windows CE support.
334 [Satoshi Nakamura and Andy Polyakov]
336 *) Initialize SSL_METHOD structures at compile time instead of during
337 runtime, thus removing the need for a lock.
340 *) Make PKCS7_decrypt() work even if no certificate is supplied by
341 attempting to decrypt each encrypted key in turn. Add support to
345 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
347 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
350 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
351 key into the same file any more.
354 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
357 *) Add -utf8 command line and config file option to 'ca'.
358 [Stefan <stf@udoma.org]
360 *) Removed the macro des_crypt(), as it seems to conflict with some
361 libraries. Use DES_crypt().
364 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
365 involves renaming the source and generated shared-libs for
366 both. The engines will accept the corrected or legacy ids
367 ('ncipher' and '4758_cca' respectively) when binding. NB,
368 this only applies when building 'shared'.
369 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
371 *) Add attribute functions to EVP_PKEY structure. Modify
372 PKCS12_create() to recognize a CSP name attribute and
373 use it. Make -CSP option work again in pkcs12 utility.
376 *) Add new functionality to the bn blinding code:
377 - automatic re-creation of the BN_BLINDING parameters after
378 a fixed number of uses (currently 32)
379 - add new function for parameter creation
380 - introduce flags to control the update behaviour of the
381 BN_BLINDING parameters
382 - hide BN_BLINDING structure
383 Add a second BN_BLINDING slot to the RSA structure to improve
384 performance when a single RSA object is shared among several
388 *) Add support for DTLS.
389 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
391 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
392 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
395 *) Remove buggy and incompletet DH cert support from
396 ssl/ssl_rsa.c and ssl/s3_both.c
399 *) Use SHA-1 instead of MD5 as the default digest algorithm for
400 the apps/openssl applications.
403 *) Compile clean with "-Wall -Wmissing-prototypes
404 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
405 DEBUG_SAFESTACK must also be set.
408 *) Change ./Configure so that certain algorithms can be disabled by default.
409 The new counterpiece to "no-xxx" is "enable-xxx".
411 The patented RC5 and MDC2 algorithms will now be disabled unless
412 "enable-rc5" and "enable-mdc2", respectively, are specified.
414 (IDEA remains enabled despite being patented. This is because IDEA
415 is frequently required for interoperability, and there is no license
416 fee for non-commercial use. As before, "no-idea" can be used to
417 avoid this algorithm.)
421 *) Add processing of proxy certificates (see RFC 3820). This work was
422 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
423 EGEE (Enabling Grids for E-science in Europe).
426 *) RC4 performance overhaul on modern architectures/implementations, such
427 as Intel P4, IA-64 and AMD64.
430 *) New utility extract-section.pl. This can be used specify an alternative
431 section number in a pod file instead of having to treat each file as
432 a separate case in Makefile. This can be done by adding two lines to the
435 =for comment openssl_section:XXX
437 The blank line is mandatory.
441 *) New arguments -certform, -keyform and -pass for s_client and s_server
442 to allow alternative format key and certificate files and passphrase
446 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
447 update associated structures and add various utility functions.
449 Add new policy related verify parameters, include policy checking in
450 standard verify code. Enhance 'smime' application with extra parameters
451 to support policy checking and print out.
454 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
455 Nehemiah processors. These extensions support AES encryption in hardware
456 as well as RNG (though RNG support is currently disabled).
457 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
459 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
462 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
463 [Andy Polyakov and a number of other people]
465 *) Improved PowerPC platform support. Most notably BIGNUM assembler
466 implementation contributed by IBM.
467 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
469 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
470 exponent rather than 'unsigned long'. There is a corresponding change to
471 the new 'rsa_keygen' element of the RSA_METHOD structure.
472 [Jelte Jansen, Geoff Thorpe]
474 *) Functionality for creating the initial serial number file is now
475 moved from CA.pl to the 'ca' utility with a new option -create_serial.
477 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
478 number file to 1, which is bound to cause problems. To avoid
479 the problems while respecting compatibility between different 0.9.7
480 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
481 CA.pl for serial number initialization. With the new release 0.9.8,
482 we can fix the problem directly in the 'ca' utility.)
485 *) Reduced header interdepencies by declaring more opaque objects in
486 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
487 give fewer recursive includes, which could break lazy source code - so
488 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
489 developers should define this symbol when building and using openssl to
490 ensure they track the recommended behaviour, interfaces, [etc], but
491 backwards-compatible behaviour prevails when this isn't defined.
494 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
497 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
498 This will generate a random key of the appropriate length based on the
499 cipher context. The EVP_CIPHER can provide its own random key generation
500 routine to support keys of a specific form. This is used in the des and
501 3des routines to generate a key of the correct parity. Update S/MIME
502 code to use new functions and hence generate correct parity DES keys.
503 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
504 valid (weak or incorrect parity).
507 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
508 as looking them up. This is useful when the verified structure may contain
509 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
510 present unless the new PKCS7_NO_CRL flag is asserted.
513 *) Extend ASN1 oid configuration module. It now additionally accepts the
516 shortName = some long name, 1.2.3.4
519 *) Reimplemented the BN_CTX implementation. There is now no more static
520 limitation on the number of variables it can handle nor the depth of the
521 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
522 information can now expand as required, and rather than having a single
523 static array of bignums, BN_CTX now uses a linked-list of such arrays
524 allowing it to expand on demand whilst maintaining the usefulness of
528 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
529 to allow all RSA operations to function using a single BN_CTX.
532 *) Preliminary support for certificate policy evaluation and checking. This
533 is initially intended to pass the tests outlined in "Conformance Testing
534 of Relying Party Client Certificate Path Processing Logic" v1.07.
537 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
538 remained unused and not that useful. A variety of other little bignum
539 tweaks and fixes have also been made continuing on from the audit (see
543 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
544 associated ASN1, EVP and SSL functions and old ASN1 macros.
547 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
548 and this should never fail. So the return value from the use of
549 BN_set_word() (which can fail due to needless expansion) is now deprecated;
550 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
553 *) BN_CTX_get() should return zero-valued bignums, providing the same
554 initialised value as BN_new().
555 [Geoff Thorpe, suggested by Ulf Möller]
557 *) Support for inhibitAnyPolicy certificate extension.
560 *) An audit of the BIGNUM code is underway, for which debugging code is
561 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
562 is considered valid when processing BIGNUMs, and causes execution to
563 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
564 further steps are taken to deliberately pollute unused data in BIGNUM
565 structures to try and expose faulty code further on. For now, openssl will
566 (in its default mode of operation) continue to tolerate the inconsistent
567 forms that it has tolerated in the past, but authors and packagers should
568 consider trying openssl and their own applications when compiled with
569 these debugging symbols defined. It will help highlight potential bugs in
570 their own code, and will improve the test coverage for OpenSSL itself. At
571 some point, these tighter rules will become openssl's default to improve
572 maintainability, though the assert()s and other overheads will remain only
573 in debugging configurations. See bn.h for more details.
574 [Geoff Thorpe, Nils Larsch, Ulf Möller]
576 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
577 that can only be obtained through BN_CTX_new() (which implicitly
578 initialises it). The presence of this function only made it possible
579 to overwrite an existing structure (and cause memory leaks).
582 *) Because of the callback-based approach for implementing LHASH as a
583 template type, lh_insert() adds opaque objects to hash-tables and
584 lh_doall() or lh_doall_arg() are typically used with a destructor callback
585 to clean up those corresponding objects before destroying the hash table
586 (and losing the object pointers). So some over-zealous constifications in
587 LHASH have been relaxed so that lh_insert() does not take (nor store) the
588 objects as "const" and the lh_doall[_arg] callback wrappers are not
589 prototyped to have "const" restrictions on the object pointers they are
590 given (and so aren't required to cast them away any more).
593 *) The tmdiff.h API was so ugly and minimal that our own timing utility
594 (speed) prefers to use its own implementation. The two implementations
595 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
596 its object type properly exposed (MS_TM) instead of casting to/from "char
597 *". This may still change yet if someone realises MS_TM and "ms_time_***"
598 aren't necessarily the greatest nomenclatures - but this is what was used
599 internally to the implementation so I've used that for now.
602 *) Ensure that deprecated functions do not get compiled when
603 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
604 the self-tests were still using deprecated key-generation functions so
605 these have been updated also.
608 *) Reorganise PKCS#7 code to separate the digest location functionality
609 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
610 New function PKCS7_set_digest() to set the digest type for PKCS#7
611 digestedData type. Add additional code to correctly generate the
612 digestedData type and add support for this type in PKCS7 initialization
616 *) New function PKCS7_set0_type_other() this initializes a PKCS7
617 structure of type "other".
620 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
621 sure the loop does correctly stop and breaking ("division by zero")
622 modulus operations are not performed. The (pre-generated) prime
623 table crypto/bn/bn_prime.h was already correct, but it could not be
624 re-generated on some platforms because of the "division by zero"
625 situation in the script.
626 [Ralf S. Engelschall]
628 *) Update support for ECC-based TLS ciphersuites according to
629 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
630 SHA-1 now is only used for "small" curves (where the
631 representation of a field element takes up to 24 bytes); for
632 larger curves, the field element resulting from ECDH is directly
633 used as premaster secret.
634 [Douglas Stebila (Sun Microsystems Laboratories)]
636 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
637 curve secp160r1 to the tests.
638 [Douglas Stebila (Sun Microsystems Laboratories)]
640 *) Add the possibility to load symbols globally with DSO.
641 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
643 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
644 control of the error stack.
647 *) Add support for STORE in ENGINE.
650 *) Add the STORE type. The intention is to provide a common interface
651 to certificate and key stores, be they simple file-based stores, or
652 HSM-type store, or LDAP stores, or...
653 NOTE: The code is currently UNTESTED and isn't really used anywhere.
656 *) Add a generic structure called OPENSSL_ITEM. This can be used to
657 pass a list of arguments to any function as well as provide a way
658 for a function to pass data back to the caller.
661 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
662 works like BUF_strdup() but can be used to duplicate a portion of
663 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
667 *) Add the function sk_find_ex() which works like sk_find(), but will
668 return an index to an element even if an exact match couldn't be
669 found. The index is guaranteed to point at the element where the
670 searched-for key would be inserted to preserve sorting order.
673 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
674 takes an extra flags argument for optional functionality. Currently,
675 the following flags are defined:
677 OBJ_BSEARCH_VALUE_ON_NOMATCH
678 This one gets OBJ_bsearch_ex() to return a pointer to the first
679 element where the comparing function returns a negative or zero
682 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
683 This one gets OBJ_bsearch_ex() to return a pointer to the first
684 element where the comparing function returns zero. This is useful
685 if there are more than one element where the comparing function
689 *) Make it possible to create self-signed certificates with 'openssl ca'
690 in such a way that the self-signed certificate becomes part of the
691 CA database and uses the same mechanisms for serial number generation
692 as all other certificate signing. The new flag '-selfsign' enables
693 this functionality. Adapt CA.sh and CA.pl.in.
696 *) Add functionality to check the public key of a certificate request
697 against a given private. This is useful to check that a certificate
698 request can be signed by that key (self-signing).
701 *) Make it possible to have multiple active certificates with the same
702 subject in the CA index file. This is done only if the keyword
703 'unique_subject' is set to 'no' in the main CA section (default
704 if 'CA_default') of the configuration file. The value is saved
705 with the database itself in a separate index attribute file,
706 named like the index file with '.attr' appended to the name.
709 *) Generate muti valued AVAs using '+' notation in config files for
713 *) Support for nameConstraints certificate extension.
716 *) Support for policyConstraints certificate extension.
719 *) Support for policyMappings certificate extension.
722 *) Make sure the default DSA_METHOD implementation only uses its
723 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
724 and change its own handlers to be NULL so as to remove unnecessary
725 indirection. This lets alternative implementations fallback to the
726 default implementation more easily.
729 *) Support for directoryName in GeneralName related extensions
733 *) Make it possible to link applications using Makefile.shared.
734 Make that possible even when linking against static libraries!
737 *) Support for single pass processing for S/MIME signing. This now
738 means that S/MIME signing can be done from a pipe, in addition
739 cleartext signing (multipart/signed type) is effectively streaming
740 and the signed data does not need to be all held in memory.
742 This is done with a new flag PKCS7_STREAM. When this flag is set
743 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
744 is done after the data is output (and digests calculated) in
748 *) Add full support for -rpath/-R, both in shared libraries and
749 applications, at least on the platforms where it's known how
753 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
754 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
755 will now compute a table of multiples of the generator that
756 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
757 faster (notably in the case of a single point multiplication,
759 [Nils Larsch, Bodo Moeller]
761 *) IPv6 support for certificate extensions. The various extensions
762 which use the IP:a.b.c.d can now take IPv6 addresses using the
763 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
767 *) Added an ENGINE that implements RSA by performing private key
768 exponentiations with the GMP library. The conversions to and from
769 GMP's mpz_t format aren't optimised nor are any montgomery forms
770 cached, and on x86 it appears OpenSSL's own performance has caught up.
771 However there are likely to be other architectures where GMP could
772 provide a boost. This ENGINE is not built in by default, but it can be
773 specified at Configure time and should be accompanied by the necessary
774 linker additions, eg;
775 ./config -DOPENSSL_USE_GMP -lgmp
778 *) "openssl engine" will not display ENGINE/DSO load failure errors when
779 testing availability of engines with "-t" - the old behaviour is
780 produced by increasing the feature's verbosity with "-tt".
783 *) ECDSA routines: under certain error conditions uninitialized BN objects
784 could be freed. Solution: make sure initialization is performed early
785 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
789 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
790 and DH_METHOD (eg. by ENGINE implementations) to override the normal
791 software implementations. For DSA and DH, parameter generation can
792 also be overriden by providing the appropriate method callbacks.
795 *) Change the "progress" mechanism used in key-generation and
796 primality testing to functions that take a new BN_GENCB pointer in
797 place of callback/argument pairs. The new API functions have "_ex"
798 postfixes and the older functions are reimplemented as wrappers for
799 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
800 declarations of the old functions to help (graceful) attempts to
801 migrate to the new functions. Also, the new key-generation API
802 functions operate on a caller-supplied key-structure and return
803 success/failure rather than returning a key or NULL - this is to
804 help make "keygen" another member function of RSA_METHOD etc.
806 Example for using the new callback interface:
808 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
812 BN_GENCB_set(&my_cb, my_callback, my_arg);
814 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
815 /* For the meaning of a, b in calls to my_callback(), see the
816 * documentation of the function that calls the callback.
817 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
818 * my_callback should return 1 if it wants BN_is_prime_ex()
819 * to continue, or 0 to stop.
824 *) Change the ZLIB compression method to be stateful, and make it
825 available to TLS with the number defined in
826 draft-ietf-tls-compression-04.txt.
829 *) Add the ASN.1 structures and functions for CertificatePair, which
830 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
832 CertificatePair ::= SEQUENCE {
833 forward [0] Certificate OPTIONAL,
834 reverse [1] Certificate OPTIONAL,
835 -- at least one of the pair shall be present -- }
837 Also implement the PEM functions to read and write certificate
838 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
840 This needed to be defined, mostly for the sake of the LDAP
841 attribute crossCertificatePair, but may prove useful elsewhere as
845 *) Make it possible to inhibit symlinking of shared libraries in
846 Makefile.shared, for Cygwin's sake.
849 *) Extend the BIGNUM API by creating a function
850 void BN_set_negative(BIGNUM *a, int neg);
851 and a macro that behave like
852 int BN_is_negative(const BIGNUM *a);
854 to avoid the need to access 'a->neg' directly in applications.
857 *) Implement fast modular reduction for pseudo-Mersenne primes
858 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
859 EC_GROUP_new_curve_GFp() will now automatically use this
861 [Nils Larsch <nla@trustcenter.de>]
863 *) Add new lock type (CRYPTO_LOCK_BN).
866 *) Change the ENGINE framework to automatically load engines
867 dynamically from specific directories unless they could be
868 found to already be built in or loaded. Move all the
869 current engines except for the cryptodev one to a new
871 The engines in engines/ are built as shared libraries if
872 the "shared" options was given to ./Configure or ./config.
873 Otherwise, they are inserted in libcrypto.a.
874 /usr/local/ssl/engines is the default directory for dynamic
875 engines, but that can be overriden at configure time through
876 the usual use of --prefix and/or --openssldir, and at run
877 time with the environment variable OPENSSL_ENGINES.
878 [Geoff Thorpe and Richard Levitte]
880 *) Add Makefile.shared, a helper makefile to build shared
881 libraries. Addapt Makefile.org.
884 *) Add version info to Win32 DLLs.
885 [Peter 'Luna' Runestig" <peter@runestig.com>]
887 *) Add new 'medium level' PKCS#12 API. Certificates and keys
888 can be added using this API to created arbitrary PKCS#12
889 files while avoiding the low level API.
891 New options to PKCS12_create(), key or cert can be NULL and
892 will then be omitted from the output file. The encryption
893 algorithm NIDs can be set to -1 for no encryption, the mac
894 iteration count can be set to 0 to omit the mac.
896 Enhance pkcs12 utility by making the -nokeys and -nocerts
897 options work when creating a PKCS#12 file. New option -nomac
898 to omit the mac, NONE can be set for an encryption algorithm.
899 New code is modified to use the enhanced PKCS12_create()
900 instead of the low level API.
903 *) Extend ASN1 encoder to support indefinite length constructed
904 encoding. This can output sequences tags and octet strings in
905 this form. Modify pk7_asn1.c to support indefinite length
906 encoding. This is experimental and needs additional code to
907 be useful, such as an ASN1 bio and some enhanced streaming
910 Extend template encode functionality so that tagging is passed
911 down to the template encoder.
914 *) Let 'openssl req' fail if an argument to '-newkey' is not
915 recognized instead of using RSA as a default.
918 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
919 As these are not official, they are not included in "ALL";
920 the "ECCdraft" ciphersuite group alias can be used to select them.
921 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
923 *) Add ECDH engine support.
924 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
926 *) Add ECDH in new directory crypto/ecdh/.
927 [Douglas Stebila (Sun Microsystems Laboratories)]
929 *) Let BN_rand_range() abort with an error after 100 iterations
930 without success (which indicates a broken PRNG).
933 *) Change BN_mod_sqrt() so that it verifies that the input value
934 is really the square of the return value. (Previously,
935 BN_mod_sqrt would show GIGO behaviour.)
938 *) Add named elliptic curves over binary fields from X9.62, SECG,
939 and WAP/WTLS; add OIDs that were still missing.
941 [Sheueling Chang Shantz and Douglas Stebila
942 (Sun Microsystems Laboratories)]
944 *) Extend the EC library for elliptic curves over binary fields
945 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
948 EC_GF2m_simple_method
952 EC_GROUP_new_curve_GF2m
953 EC_GROUP_set_curve_GF2m
954 EC_GROUP_get_curve_GF2m
955 EC_POINT_set_affine_coordinates_GF2m
956 EC_POINT_get_affine_coordinates_GF2m
957 EC_POINT_set_compressed_coordinates_GF2m
959 Point compression for binary fields is disabled by default for
960 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
963 As binary polynomials are represented as BIGNUMs, various members
964 of the EC_GROUP and EC_POINT data structures can be shared
965 between the implementations for prime fields and binary fields;
966 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
967 are essentially identical to their ..._GFp counterparts.
968 (For simplicity, the '..._GFp' prefix has been dropped from
969 various internal method names.)
971 An internal 'field_div' method (similar to 'field_mul' and
972 'field_sqr') has been added; this is used only for binary fields.
974 [Sheueling Chang Shantz and Douglas Stebila
975 (Sun Microsystems Laboratories)]
977 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
978 through methods ('mul', 'precompute_mult').
980 The generic implementations (now internally called 'ec_wNAF_mul'
981 and 'ec_wNAF_precomputed_mult') remain the default if these
982 methods are undefined.
984 [Sheueling Chang Shantz and Douglas Stebila
985 (Sun Microsystems Laboratories)]
987 *) New function EC_GROUP_get_degree, which is defined through
988 EC_METHOD. For curves over prime fields, this returns the bit
989 length of the modulus.
991 [Sheueling Chang Shantz and Douglas Stebila
992 (Sun Microsystems Laboratories)]
994 *) New functions EC_GROUP_dup, EC_POINT_dup.
995 (These simply call ..._new and ..._copy).
997 [Sheueling Chang Shantz and Douglas Stebila
998 (Sun Microsystems Laboratories)]
1000 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
1001 Polynomials are represented as BIGNUMs (where the sign bit is not
1002 used) in the following functions [macros]:
1005 BN_GF2m_sub [= BN_GF2m_add]
1006 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
1007 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
1008 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
1010 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
1011 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
1012 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
1013 BN_GF2m_cmp [= BN_ucmp]
1015 (Note that only the 'mod' functions are actually for fields GF(2^m).
1016 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
1018 For some functions, an the irreducible polynomial defining a
1019 field can be given as an 'unsigned int[]' with strictly
1020 decreasing elements giving the indices of those bits that are set;
1021 i.e., p[] represents the polynomial
1022 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
1024 p[0] > p[1] > ... > p[k] = 0.
1025 This applies to the following functions:
1030 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
1031 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
1033 BN_GF2m_mod_sqrt_arr
1034 BN_GF2m_mod_solve_quad_arr
1038 Conversion can be performed by the following functions:
1043 bntest.c has additional tests for binary polynomial arithmetic.
1045 Two implementations for BN_GF2m_mod_div() are available.
1046 The default algorithm simply uses BN_GF2m_mod_inv() and
1047 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
1048 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
1049 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
1051 [Sheueling Chang Shantz and Douglas Stebila
1052 (Sun Microsystems Laboratories)]
1054 *) Add new error code 'ERR_R_DISABLED' that can be used when some
1055 functionality is disabled at compile-time.
1056 [Douglas Stebila <douglas.stebila@sun.com>]
1058 *) Change default behaviour of 'openssl asn1parse' so that more
1059 information is visible when viewing, e.g., a certificate:
1061 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
1062 mode the content of non-printable OCTET STRINGs is output in a
1063 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
1064 avoid the appearance of a printable string.
1065 [Nils Larsch <nla@trustcenter.de>]
1067 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
1069 EC_GROUP_set_asn1_flag()
1070 EC_GROUP_get_asn1_flag()
1071 EC_GROUP_set_point_conversion_form()
1072 EC_GROUP_get_point_conversion_form()
1073 These control ASN1 encoding details:
1074 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
1075 has been set to OPENSSL_EC_NAMED_CURVE.
1076 - Points are encoded in uncompressed form by default; options for
1077 asn1_for are as for point2oct, namely
1078 POINT_CONVERSION_COMPRESSED
1079 POINT_CONVERSION_UNCOMPRESSED
1080 POINT_CONVERSION_HYBRID
1082 Also add 'seed' and 'seed_len' members to EC_GROUP with access
1085 EC_GROUP_get0_seed()
1086 EC_GROUP_get_seed_len()
1087 This is used only for ASN1 purposes (so far).
1088 [Nils Larsch <nla@trustcenter.de>]
1090 *) Add 'field_type' member to EC_METHOD, which holds the NID
1091 of the appropriate field type OID. The new function
1092 EC_METHOD_get_field_type() returns this value.
1093 [Nils Larsch <nla@trustcenter.de>]
1098 EC_POINT_point2hex()
1099 EC_POINT_hex2point()
1100 providing useful interfaces to EC_POINT_point2oct() and
1101 EC_POINT_oct2point().
1102 [Nils Larsch <nla@trustcenter.de>]
1104 *) Change internals of the EC library so that the functions
1105 EC_GROUP_set_generator()
1106 EC_GROUP_get_generator()
1107 EC_GROUP_get_order()
1108 EC_GROUP_get_cofactor()
1109 are implemented directly in crypto/ec/ec_lib.c and not dispatched
1110 to methods, which would lead to unnecessary code duplication when
1111 adding different types of curves.
1112 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
1114 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
1115 arithmetic, and such that modified wNAFs are generated
1116 (which avoid length expansion in many cases).
1119 *) Add a function EC_GROUP_check_discriminant() (defined via
1120 EC_METHOD) that verifies that the curve discriminant is non-zero.
1122 Add a function EC_GROUP_check() that makes some sanity tests
1123 on a EC_GROUP, its generator and order. This includes
1124 EC_GROUP_check_discriminant().
1125 [Nils Larsch <nla@trustcenter.de>]
1127 *) Add ECDSA in new directory crypto/ecdsa/.
1129 Add applications 'openssl ecparam' and 'openssl ecdsa'
1130 (these are based on 'openssl dsaparam' and 'openssl dsa').
1132 ECDSA support is also included in various other files across the
1133 library. Most notably,
1134 - 'openssl req' now has a '-newkey ecdsa:file' option;
1135 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
1136 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
1137 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
1138 them suitable for ECDSA where domain parameters must be
1139 extracted before the specific public key;
1140 - ECDSA engine support has been added.
1141 [Nils Larsch <nla@trustcenter.de>]
1143 *) Include some named elliptic curves, and add OIDs from X9.62,
1144 SECG, and WAP/WTLS. Each curve can be obtained from the new
1146 EC_GROUP_new_by_curve_name(),
1147 and the list of available named curves can be obtained with
1148 EC_get_builtin_curves().
1149 Also add a 'curve_name' member to EC_GROUP objects, which can be
1151 EC_GROUP_set_curve_name()
1152 EC_GROUP_get_curve_name()
1153 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
1155 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
1156 was actually never needed) and in BN_mul(). The removal in BN_mul()
1157 required a small change in bn_mul_part_recursive() and the addition
1158 of the functions bn_cmp_part_words(), bn_sub_part_words() and
1159 bn_add_part_words(), which do the same thing as bn_cmp_words(),
1160 bn_sub_words() and bn_add_words() except they take arrays with
1164 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
1166 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
1167 The value now differs depending on if you build for FIPS or not.
1168 BEWARE! A program linked with a shared FIPSed libcrypto can't be
1169 safely run with a non-FIPSed libcrypto, as it may crash because of
1170 the difference induced by this change.
1173 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
1175 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
1176 (part of SSL_OP_ALL). This option used to disable the
1177 countermeasure against man-in-the-middle protocol-version
1178 rollback in the SSL 2.0 server implementation, which is a bad
1179 idea. (CVE-2005-2969)
1181 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
1182 for Information Security, National Institute of Advanced Industrial
1183 Science and Technology [AIST], Japan)]
1185 *) Minimal support for X9.31 signatures and PSS padding modes. This is
1186 mainly for FIPS compliance and not fully integrated at this stage.
1189 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
1190 the exponentiation using a fixed-length exponent. (Otherwise,
1191 the information leaked through timing could expose the secret key
1192 after many signatures; cf. Bleichenbacher's attack on DSA with
1196 *) Make a new fixed-window mod_exp implementation the default for
1197 RSA, DSA, and DH private-key operations so that the sequence of
1198 squares and multiplies and the memory access pattern are
1199 independent of the particular secret key. This will mitigate
1200 cache-timing and potential related attacks.
1202 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
1203 and this is automatically used by BN_mod_exp_mont() if the new flag
1204 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
1205 will use this BN flag for private exponents unless the flag
1206 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
1207 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
1209 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
1211 *) Change the client implementation for SSLv23_method() and
1212 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
1213 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
1214 (Previously, the SSL 2.0 backwards compatible Client Hello
1215 message format would be used even with SSL_OP_NO_SSLv2.)
1218 *) Add support for smime-type MIME parameter in S/MIME messages which some
1222 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
1223 a threadsafe manner. Modify rsa code to use new function and add calls
1224 to dsa and dh code (which had race conditions before).
1227 *) Include the fixed error library code in the C error file definitions
1228 instead of fixing them up at runtime. This keeps the error code
1229 structures constant.
1232 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
1234 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
1237 *) Fixes for newer kerberos headers. NB: the casts are needed because
1238 the 'length' field is signed on one version and unsigned on another
1239 with no (?) obvious way to tell the difference, without these VC++
1240 complains. Also the "definition" of FAR (blank) is no longer included
1241 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
1242 some needed definitions.
1245 *) Undo Cygwin change.
1248 *) Added support for proxy certificates according to RFC 3820.
1249 Because they may be a security thread to unaware applications,
1250 they must be explicitely allowed in run-time. See
1251 docs/HOWTO/proxy_certificates.txt for further information.
1254 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
1256 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
1257 server and client random values. Previously
1258 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
1259 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
1261 This change has negligible security impact because:
1263 1. Server and client random values still have 24 bytes of pseudo random
1266 2. Server and client random values are sent in the clear in the initial
1269 3. The master secret is derived using the premaster secret (48 bytes in
1270 size for static RSA ciphersuites) as well as client server and random
1273 The OpenSSL team would like to thank the UK NISCC for bringing this issue
1276 [Stephen Henson, reported by UK NISCC]
1278 *) Use Windows randomness collection on Cygwin.
1281 *) Fix hang in EGD/PRNGD query when communication socket is closed
1282 prematurely by EGD/PRNGD.
1283 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
1285 *) Prompt for pass phrases when appropriate for PKCS12 input format.
1288 *) Back-port of selected performance improvements from development
1289 branch, as well as improved support for PowerPC platforms.
1292 *) Add lots of checks for memory allocation failure, error codes to indicate
1293 failure and freeing up memory if a failure occurs.
1294 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
1296 *) Add new -passin argument to dgst.
1299 *) Perform some character comparisons of different types in X509_NAME_cmp:
1300 this is needed for some certificates that reencode DNs into UTF8Strings
1301 (in violation of RFC3280) and can't or wont issue name rollover
1305 *) Make an explicit check during certificate validation to see that
1306 the CA setting in each certificate on the chain is correct. As a
1307 side effect always do the following basic checks on extensions,
1308 not just when there's an associated purpose to the check:
1310 - if there is an unhandled critical extension (unless the user
1311 has chosen to ignore this fault)
1312 - if the path length has been exceeded (if one is set at all)
1313 - that certain extensions fit the associated purpose (if one has
1317 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
1319 *) Avoid a race condition when CRLs are checked in a multi threaded
1320 environment. This would happen due to the reordering of the revoked
1321 entries during signature checking and serial number lookup. Now the
1322 encoding is cached and the serial number sort performed under a lock.
1323 Add new STACK function sk_is_sorted().
1326 *) Add Delta CRL to the extension code.
1329 *) Various fixes to s3_pkt.c so alerts are sent properly.
1330 [David Holmes <d.holmes@f5.com>]
1332 *) Reduce the chances of duplicate issuer name and serial numbers (in
1333 violation of RFC3280) using the OpenSSL certificate creation utilities.
1334 This is done by creating a random 64 bit value for the initial serial
1335 number when a serial number file is created or when a self signed
1336 certificate is created using 'openssl req -x509'. The initial serial
1337 number file is created using 'openssl x509 -next_serial' in CA.pl
1338 rather than being initialized to 1.
1341 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
1343 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
1344 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
1345 [Joe Orton, Steve Henson]
1347 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
1349 [Joe Orton, Steve Henson]
1351 *) Make it possible to have multiple active certificates with the same
1352 subject in the CA index file. This is done only if the keyword
1353 'unique_subject' is set to 'no' in the main CA section (default
1354 if 'CA_default') of the configuration file. The value is saved
1355 with the database itself in a separate index attribute file,
1356 named like the index file with '.attr' appended to the name.
1359 *) X509 verify fixes. Disable broken certificate workarounds when
1360 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
1361 keyUsage extension present. Don't accept CRLs with unhandled critical
1362 extensions: since verify currently doesn't process CRL extensions this
1363 rejects a CRL with *any* critical extensions. Add new verify error codes
1367 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
1368 A clarification of RFC2560 will require the use of OCTET STRINGs and
1369 some implementations cannot handle the current raw format. Since OpenSSL
1370 copies and compares OCSP nonces as opaque blobs without any attempt at
1371 parsing them this should not create any compatibility issues.
1374 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
1375 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
1376 this HMAC (and other) operations are several times slower than OpenSSL
1380 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
1381 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
1383 *) Use the correct content when signing type "other".
1386 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
1388 *) Fix various bugs revealed by running the NISCC test suite:
1390 Stop out of bounds reads in the ASN1 code when presented with
1391 invalid tags (CVE-2003-0543 and CVE-2003-0544).
1393 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
1395 If verify callback ignores invalid public key errors don't try to check
1396 certificate signature with the NULL public key.
1400 *) New -ignore_err option in ocsp application to stop the server
1401 exiting on the first error in a request.
1404 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
1405 if the server requested one: as stated in TLS 1.0 and SSL 3.0
1409 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
1410 extra data after the compression methods not only for TLS 1.0
1411 but also for SSL 3.0 (as required by the specification).
1412 [Bodo Moeller; problem pointed out by Matthias Loepfe]
1414 *) Change X509_certificate_type() to mark the key as exported/exportable
1415 when it's 512 *bits* long, not 512 bytes.
1418 *) Change AES_cbc_encrypt() so it outputs exact multiple of
1419 blocks during encryption.
1422 *) Various fixes to base64 BIO and non blocking I/O. On write
1423 flushes were not handled properly if the BIO retried. On read
1424 data was not being buffered properly and had various logic bugs.
1425 This also affects blocking I/O when the data being decoded is a
1429 *) Various S/MIME bugfixes and compatibility changes:
1430 output correct application/pkcs7 MIME type if
1431 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
1432 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
1433 of files as .eml work). Correctly handle very long lines in MIME
1437 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
1439 *) Countermeasure against the Klima-Pokorny-Rosa extension of
1440 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
1441 a protocol version number mismatch like a decryption error
1442 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
1445 *) Turn on RSA blinding by default in the default implementation
1446 to avoid a timing attack. Applications that don't want it can call
1447 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
1448 They would be ill-advised to do so in most cases.
1449 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
1451 *) Change RSA blinding code so that it works when the PRNG is not
1452 seeded (in this case, the secret RSA exponent is abused as
1453 an unpredictable seed -- if it is not unpredictable, there
1454 is no point in blinding anyway). Make RSA blinding thread-safe
1455 by remembering the creator's thread ID in rsa->blinding and
1456 having all other threads use local one-time blinding factors
1457 (this requires more computation than sharing rsa->blinding, but
1458 avoids excessive locking; and if an RSA object is not shared
1459 between threads, blinding will still be very fast).
1462 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
1463 ENGINE as defaults for all supported algorithms irrespective of
1464 the 'flags' parameter. 'flags' is now honoured, so applications
1465 should make sure they are passing it correctly.
1468 *) Target "mingw" now allows native Windows code to be generated in
1469 the Cygwin environment as well as with the MinGW compiler.
1472 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
1474 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
1475 via timing by performing a MAC computation even if incorrrect
1476 block cipher padding has been found. This is a countermeasure
1477 against active attacks where the attacker has to distinguish
1478 between bad padding and a MAC verification error. (CVE-2003-0078)
1480 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
1481 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
1482 Martin Vuagnoux (EPFL, Ilion)]
1484 *) Make the no-err option work as intended. The intention with no-err
1485 is not to have the whole error stack handling routines removed from
1486 libcrypto, it's only intended to remove all the function name and
1487 reason texts, thereby removing some of the footprint that may not
1488 be interesting if those errors aren't displayed anyway.
1490 NOTE: it's still possible for any application or module to have it's
1491 own set of error texts inserted. The routines are there, just not
1492 used by default when no-err is given.
1495 *) Add support for FreeBSD on IA64.
1496 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
1498 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
1499 Kerberos function mit_des_cbc_cksum(). Before this change,
1500 the value returned by DES_cbc_cksum() was like the one from
1501 mit_des_cbc_cksum(), except the bytes were swapped.
1502 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
1504 *) Allow an application to disable the automatic SSL chain building.
1505 Before this a rather primitive chain build was always performed in
1506 ssl3_output_cert_chain(): an application had no way to send the
1507 correct chain if the automatic operation produced an incorrect result.
1509 Now the chain builder is disabled if either:
1511 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
1513 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
1515 The reasoning behind this is that an application would not want the
1516 auto chain building to take place if extra chain certificates are
1517 present and it might also want a means of sending no additional
1518 certificates (for example the chain has two certificates and the
1522 *) Add the possibility to build without the ENGINE framework.
1523 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
1525 *) Under Win32 gmtime() can return NULL: check return value in
1526 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
1529 *) DSA routines: under certain error conditions uninitialized BN objects
1530 could be freed. Solution: make sure initialization is performed early
1531 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
1532 Nils Larsch <nla@trustcenter.de> via PR#459)
1535 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
1536 checked on reconnect on the client side, therefore session resumption
1537 could still fail with a "ssl session id is different" error. This
1538 behaviour is masked when SSL_OP_ALL is used due to
1539 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
1540 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
1541 followup to PR #377.
1544 *) IA-32 assembler support enhancements: unified ELF targets, support
1545 for SCO/Caldera platforms, fix for Cygwin shared build.
1548 *) Add support for FreeBSD on sparc64. As a consequence, support for
1549 FreeBSD on non-x86 processors is separate from x86 processors on
1550 the config script, much like the NetBSD support.
1551 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
1553 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
1555 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
1558 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
1559 code (06) was taken as the first octet of the session ID and the last
1560 octet was ignored consequently. As a result SSLv2 client side session
1561 caching could not have worked due to the session ID mismatch between
1563 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
1567 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
1568 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
1572 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
1573 seems that in spite of existing for more than a year, many application
1574 author have done nothing to provide the necessary callbacks, which
1575 means that this particular engine will not work properly anywhere.
1576 This is a very unfortunate situation which forces us, in the name
1577 of usability, to give the hw_ncipher.c a static lock, which is part
1579 NOTE: This is for the 0.9.7 series ONLY. This hack will never
1580 appear in 0.9.8 or later. We EXPECT application authors to have
1581 dealt properly with this when 0.9.8 is released (unless we actually
1582 make such changes in the libcrypto locking code that changes will
1583 have to be made anyway).
1586 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
1587 octets have been read, EOF or an error occurs. Without this change
1588 some truncated ASN1 structures will not produce an error.
1591 *) Disable Heimdal support, since it hasn't been fully implemented.
1592 Still give the possibility to force the use of Heimdal, but with
1593 warnings and a request that patches get sent to openssl-dev.
1596 *) Add the VC-CE target, introduce the WINCE sysname, and add
1597 INSTALL.WCE and appropriate conditionals to make it build.
1598 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
1600 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
1601 cygssl-x.y.z.dll, where x, y and z are the major, minor and
1602 edit numbers of the version.
1603 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
1605 *) Introduce safe string copy and catenation functions
1606 (BUF_strlcpy() and BUF_strlcat()).
1607 [Ben Laurie (CHATS) and Richard Levitte]
1609 *) Avoid using fixed-size buffers for one-line DNs.
1610 [Ben Laurie (CHATS)]
1612 *) Add BUF_MEM_grow_clean() to avoid information leakage when
1613 resizing buffers containing secrets, and use where appropriate.
1614 [Ben Laurie (CHATS)]
1616 *) Avoid using fixed size buffers for configuration file location.
1617 [Ben Laurie (CHATS)]
1619 *) Avoid filename truncation for various CA files.
1620 [Ben Laurie (CHATS)]
1622 *) Use sizeof in preference to magic numbers.
1623 [Ben Laurie (CHATS)]
1625 *) Avoid filename truncation in cert requests.
1626 [Ben Laurie (CHATS)]
1628 *) Add assertions to check for (supposedly impossible) buffer
1630 [Ben Laurie (CHATS)]
1632 *) Don't cache truncated DNS entries in the local cache (this could
1633 potentially lead to a spoofing attack).
1634 [Ben Laurie (CHATS)]
1636 *) Fix various buffers to be large enough for hex/decimal
1637 representations in a platform independent manner.
1638 [Ben Laurie (CHATS)]
1640 *) Add CRYPTO_realloc_clean() to avoid information leakage when
1641 resizing buffers containing secrets, and use where appropriate.
1642 [Ben Laurie (CHATS)]
1644 *) Add BIO_indent() to avoid much slightly worrying code to do
1646 [Ben Laurie (CHATS)]
1648 *) Convert sprintf()/BIO_puts() to BIO_printf().
1649 [Ben Laurie (CHATS)]
1651 *) buffer_gets() could terminate with the buffer only half
1653 [Ben Laurie (CHATS)]
1655 *) Add assertions to prevent user-supplied crypto functions from
1656 overflowing internal buffers by having large block sizes, etc.
1657 [Ben Laurie (CHATS)]
1659 *) New OPENSSL_assert() macro (similar to assert(), but enabled
1661 [Ben Laurie (CHATS)]
1663 *) Eliminate unused copy of key in RC4.
1664 [Ben Laurie (CHATS)]
1666 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
1667 [Ben Laurie (CHATS)]
1669 *) Fix off-by-one error in EGD path.
1670 [Ben Laurie (CHATS)]
1672 *) If RANDFILE path is too long, ignore instead of truncating.
1673 [Ben Laurie (CHATS)]
1675 *) Eliminate unused and incorrectly sized X.509 structure
1677 [Ben Laurie (CHATS)]
1679 *) Eliminate unused and dangerous function knumber().
1680 [Ben Laurie (CHATS)]
1682 *) Eliminate unused and dangerous structure, KSSL_ERR.
1683 [Ben Laurie (CHATS)]
1685 *) Protect against overlong session ID context length in an encoded
1686 session object. Since these are local, this does not appear to be
1688 [Ben Laurie (CHATS)]
1690 *) Change from security patch (see 0.9.6e below) that did not affect
1691 the 0.9.6 release series:
1693 Remote buffer overflow in SSL3 protocol - an attacker could
1694 supply an oversized master key in Kerberos-enabled versions.
1696 [Ben Laurie (CHATS)]
1698 *) Change the SSL kerb5 codes to match RFC 2712.
1701 *) Make -nameopt work fully for req and add -reqopt switch.
1702 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
1704 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
1705 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
1707 *) Make sure tests can be performed even if the corresponding algorithms
1708 have been removed entirely. This was also the last step to make
1709 OpenSSL compilable with DJGPP under all reasonable conditions.
1710 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
1712 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
1713 to allow version independent disabling of normally unselected ciphers,
1714 which may be activated as a side-effect of selecting a single cipher.
1716 (E.g., cipher list string "RSA" enables ciphersuites that are left
1717 out of "ALL" because they do not provide symmetric encryption.
1718 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
1719 [Lutz Jaenicke, Bodo Moeller]
1721 *) Add appropriate support for separate platform-dependent build
1722 directories. The recommended way to make a platform-dependent
1723 build directory is the following (tested on Linux), maybe with
1726 # Place yourself outside of the OpenSSL source tree. In
1727 # this example, the environment variable OPENSSL_SOURCE
1728 # is assumed to contain the absolute OpenSSL source directory.
1729 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
1730 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
1731 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
1732 mkdir -p `dirname $F`
1733 ln -s $OPENSSL_SOURCE/$F $F
1736 To be absolutely sure not to disturb the source tree, a "make clean"
1737 is a good thing. If it isn't successfull, don't worry about it,
1738 it probably means the source directory is very clean.
1741 *) Make sure any ENGINE control commands make local copies of string
1742 pointers passed to them whenever necessary. Otherwise it is possible
1743 the caller may have overwritten (or deallocated) the original string
1744 data when a later ENGINE operation tries to use the stored values.
1745 [Götz Babin-Ebell <babinebell@trustcenter.de>]
1747 *) Improve diagnostics in file reading and command-line digests.
1748 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
1750 *) Add AES modes CFB and OFB to the object database. Correct an
1751 error in AES-CFB decryption.
1754 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
1755 allows existing EVP_CIPHER_CTX structures to be reused after
1756 calling EVP_*Final(). This behaviour is used by encryption
1757 BIOs and some applications. This has the side effect that
1758 applications must explicitly clean up cipher contexts with
1759 EVP_CIPHER_CTX_cleanup() or they will leak memory.
1762 *) Check the values of dna and dnb in bn_mul_recursive before calling
1763 bn_mul_comba (a non zero value means the a or b arrays do not contain
1764 n2 elements) and fallback to bn_mul_normal if either is not zero.
1767 *) Fix escaping of non-ASCII characters when using the -subj option
1768 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
1771 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
1772 form for "surname", serialNumber has no short form.
1773 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
1774 therefore remove "mail" short name for "internet 7".
1775 The OID for unique identifiers in X509 certificates is
1776 x500UniqueIdentifier, not uniqueIdentifier.
1777 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
1780 *) Add an "init" command to the ENGINE config module and auto initialize
1781 ENGINEs. Without any "init" command the ENGINE will be initialized
1782 after all ctrl commands have been executed on it. If init=1 the
1783 ENGINE is initailized at that point (ctrls before that point are run
1784 on the uninitialized ENGINE and after on the initialized one). If
1785 init=0 then the ENGINE will not be iniatialized at all.
1788 *) Fix the 'app_verify_callback' interface so that the user-defined
1789 argument is actually passed to the callback: In the
1790 SSL_CTX_set_cert_verify_callback() prototype, the callback
1791 declaration has been changed from
1794 int (*cb)(X509_STORE_CTX *,void *);
1795 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
1796 i=s->ctx->app_verify_callback(&ctx)
1797 has been changed into
1798 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
1800 To update applications using SSL_CTX_set_cert_verify_callback(),
1801 a dummy argument can be added to their callback functions.
1802 [D. K. Smetters <smetters@parc.xerox.com>]
1804 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
1805 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
1807 *) Add and OPENSSL_LOAD_CONF define which will cause
1808 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
1809 This allows older applications to transparently support certain
1810 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
1811 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
1812 load the config file and OPENSSL_add_all_algorithms_conf() which will
1813 always load it have also been added.
1816 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
1817 Adjust NIDs and EVP layer.
1818 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
1820 *) Config modules support in openssl utility.
1822 Most commands now load modules from the config file,
1823 though in a few (such as version) this isn't done
1824 because it couldn't be used for anything.
1826 In the case of ca and req the config file used is
1827 the same as the utility itself: that is the -config
1828 command line option can be used to specify an
1832 *) Move default behaviour from OPENSSL_config(). If appname is NULL
1833 use "openssl_conf" if filename is NULL use default openssl config file.
1836 *) Add an argument to OPENSSL_config() to allow the use of an alternative
1837 config section name. Add a new flag to tolerate a missing config file
1838 and move code to CONF_modules_load_file().
1841 *) Support for crypto accelerator cards from Accelerated Encryption
1842 Processing, www.aep.ie. (Use engine 'aep')
1843 The support was copied from 0.9.6c [engine] and adapted/corrected
1844 to work with the new engine framework.
1845 [AEP Inc. and Richard Levitte]
1847 *) Support for SureWare crypto accelerator cards from Baltimore
1848 Technologies. (Use engine 'sureware')
1849 The support was copied from 0.9.6c [engine] and adapted
1850 to work with the new engine framework.
1853 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
1854 make the newer ENGINE framework commands for the CHIL engine work.
1855 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
1857 *) Make it possible to produce shared libraries on ReliantUNIX.
1858 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
1860 *) Add the configuration target debug-linux-ppro.
1861 Make 'openssl rsa' use the general key loading routines
1862 implemented in apps.c, and make those routines able to
1863 handle the key format FORMAT_NETSCAPE and the variant
1865 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
1867 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
1868 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
1870 *) Add -keyform to rsautl, and document -engine.
1871 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
1873 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
1874 BIO_R_NO_SUCH_FILE error code rather than the generic
1875 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
1878 *) Add new functions
1880 ERR_peek_last_error_line
1881 ERR_peek_last_error_line_data.
1882 These are similar to
1885 ERR_peek_error_line_data,
1886 but report on the latest error recorded rather than the first one
1887 still in the error queue.
1888 [Ben Laurie, Bodo Moeller]
1890 *) default_algorithms option in ENGINE config module. This allows things
1892 default_algorithms = ALL
1893 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
1896 *) Prelminary ENGINE config module.
1899 *) New experimental application configuration code.
1902 *) Change the AES code to follow the same name structure as all other
1903 symmetric ciphers, and behave the same way. Move everything to
1904 the directory crypto/aes, thereby obsoleting crypto/rijndael.
1905 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
1907 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
1908 [Ben Laurie and Theo de Raadt]
1910 *) Add option to output public keys in req command.
1911 [Massimiliano Pala madwolf@openca.org]
1913 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
1914 (up to about 10% better than before for P-192 and P-224).
1917 *) New functions/macros
1919 SSL_CTX_set_msg_callback(ctx, cb)
1920 SSL_CTX_set_msg_callback_arg(ctx, arg)
1921 SSL_set_msg_callback(ssl, cb)
1922 SSL_set_msg_callback_arg(ssl, arg)
1924 to request calling a callback function
1926 void cb(int write_p, int version, int content_type,
1927 const void *buf, size_t len, SSL *ssl, void *arg)
1929 whenever a protocol message has been completely received
1930 (write_p == 0) or sent (write_p == 1). Here 'version' is the
1931 protocol version according to which the SSL library interprets
1932 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
1933 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
1934 the content type as defined in the SSL 3.0/TLS 1.0 protocol
1935 specification (change_cipher_spec(20), alert(21), handshake(22)).
1936 'buf' and 'len' point to the actual message, 'ssl' to the
1937 SSL object, and 'arg' is the application-defined value set by
1938 SSL[_CTX]_set_msg_callback_arg().
1940 'openssl s_client' and 'openssl s_server' have new '-msg' options
1941 to enable a callback that displays all protocol messages.
1944 *) Change the shared library support so shared libraries are built as
1945 soon as the corresponding static library is finished, and thereby get
1946 openssl and the test programs linked against the shared library.
1947 This still only happens when the keyword "shard" has been given to
1948 the configuration scripts.
1950 NOTE: shared library support is still an experimental thing, and
1951 backward binary compatibility is still not guaranteed.
1952 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
1954 *) Add support for Subject Information Access extension.
1955 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
1957 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
1958 additional bytes when new memory had to be allocated, not just
1959 when reusing an existing buffer.
1962 *) New command line and configuration option 'utf8' for the req command.
1963 This allows field values to be specified as UTF8 strings.
1966 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
1967 runs for the former and machine-readable output for the latter.
1970 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
1971 of the e-mail address in the DN (i.e., it will go into a certificate
1972 extension only). The new configuration file option 'email_in_dn = no'
1973 has the same effect.
1974 [Massimiliano Pala madwolf@openca.org]
1976 *) Change all functions with names starting with des_ to be starting
1977 with DES_ instead. Add wrappers that are compatible with libdes,
1978 but are named _ossl_old_des_*. Finally, add macros that map the
1979 des_* symbols to the corresponding _ossl_old_des_* if libdes
1980 compatibility is desired. If OpenSSL 0.9.6c compatibility is
1981 desired, the des_* symbols will be mapped to DES_*, with one
1984 Since we provide two compatibility mappings, the user needs to
1985 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
1986 compatibility is desired. The default (i.e., when that macro
1987 isn't defined) is OpenSSL 0.9.6c compatibility.
1989 There are also macros that enable and disable the support of old
1990 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
1991 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
1992 are defined, the default will apply: to support the old des routines.
1994 In either case, one must include openssl/des.h to get the correct
1995 definitions. Do not try to just include openssl/des_old.h, that
1998 NOTE: This is a major break of an old API into a new one. Software
1999 authors are encouraged to switch to the DES_ style functions. Some
2000 time in the future, des_old.h and the libdes compatibility functions
2001 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
2002 default), and then completely removed.
2005 *) Test for certificates which contain unsupported critical extensions.
2006 If such a certificate is found during a verify operation it is
2007 rejected by default: this behaviour can be overridden by either
2008 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
2009 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
2010 X509_supported_extension() has also been added which returns 1 if a
2011 particular extension is supported.
2014 *) Modify the behaviour of EVP cipher functions in similar way to digests
2015 to retain compatibility with existing code.
2018 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
2019 compatibility with existing code. In particular the 'ctx' parameter does
2020 not have to be to be initialized before the call to EVP_DigestInit() and
2021 it is tidied up after a call to EVP_DigestFinal(). New function
2022 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
2023 EVP_MD_CTX_copy() changed to not require the destination to be
2024 initialized valid and new function EVP_MD_CTX_copy_ex() added which
2025 requires the destination to be valid.
2027 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
2028 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
2031 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
2032 so that complete 'Handshake' protocol structures are kept in memory
2033 instead of overwriting 'msg_type' and 'length' with 'body' data.
2036 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
2037 [Massimo Santin via Richard Levitte]
2039 *) Major restructuring to the underlying ENGINE code. This includes
2040 reduction of linker bloat, separation of pure "ENGINE" manipulation
2041 (initialisation, etc) from functionality dealing with implementations
2042 of specific crypto iterfaces. This change also introduces integrated
2043 support for symmetric ciphers and digest implementations - so ENGINEs
2044 can now accelerate these by providing EVP_CIPHER and EVP_MD
2045 implementations of their own. This is detailed in crypto/engine/README
2046 as it couldn't be adequately described here. However, there are a few
2047 API changes worth noting - some RSA, DSA, DH, and RAND functions that
2048 were changed in the original introduction of ENGINE code have now
2049 reverted back - the hooking from this code to ENGINE is now a good
2050 deal more passive and at run-time, operations deal directly with
2051 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
2052 dereferencing through an ENGINE pointer any more. Also, the ENGINE
2053 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
2054 they were not being used by the framework as there is no concept of a
2055 BIGNUM_METHOD and they could not be generalised to the new
2056 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
2057 ENGINE_cpy() has been removed as it cannot be consistently defined in
2061 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
2064 *) Change mkdef.pl to sort symbols that get the same entry number,
2065 and make sure the automatically generated functions ERR_load_*
2066 become part of libeay.num as well.
2069 *) New function SSL_renegotiate_pending(). This returns true once
2070 renegotiation has been requested (either SSL_renegotiate() call
2071 or HelloRequest/ClientHello receveived from the peer) and becomes
2072 false once a handshake has been completed.
2073 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
2074 sends a HelloRequest, but does not ensure that a handshake takes
2075 place. SSL_renegotiate_pending() is useful for checking if the
2076 client has followed the request.)
2079 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
2080 By default, clients may request session resumption even during
2081 renegotiation (if session ID contexts permit); with this option,
2082 session resumption is possible only in the first handshake.
2084 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
2085 more bits available for options that should not be part of
2086 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
2089 *) Add some demos for certificate and certificate request creation.
2092 *) Make maximum certificate chain size accepted from the peer application
2093 settable (SSL*_get/set_max_cert_list()), as proposed by
2094 "Douglas E. Engert" <deengert@anl.gov>.
2097 *) Add support for shared libraries for Unixware-7
2098 (Boyd Lynn Gerber <gerberb@zenez.com>).
2101 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
2102 be done prior to destruction. Use this to unload error strings from
2103 ENGINEs that load their own error strings. NB: This adds two new API
2104 functions to "get" and "set" this destroy handler in an ENGINE.
2107 *) Alter all existing ENGINE implementations (except "openssl" and
2108 "openbsd") to dynamically instantiate their own error strings. This
2109 makes them more flexible to be built both as statically-linked ENGINEs
2110 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
2111 Also, add stub code to each that makes building them as self-contained
2112 shared-libraries easier (see README.ENGINE).
2115 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
2116 implementations into applications that are completely implemented in
2117 self-contained shared-libraries. The "dynamic" ENGINE exposes control
2118 commands that can be used to configure what shared-library to load and
2119 to control aspects of the way it is handled. Also, made an update to
2120 the README.ENGINE file that brings its information up-to-date and
2121 provides some information and instructions on the "dynamic" ENGINE
2122 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
2125 *) Make it possible to unload ranges of ERR strings with a new
2126 "ERR_unload_strings" function.
2129 *) Add a copy() function to EVP_MD.
2132 *) Make EVP_MD routines take a context pointer instead of just the
2133 md_data void pointer.
2136 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
2137 that the digest can only process a single chunk of data
2138 (typically because it is provided by a piece of
2139 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
2140 is only going to provide a single chunk of data, and hence the
2141 framework needn't accumulate the data for oneshot drivers.
2144 *) As with "ERR", make it possible to replace the underlying "ex_data"
2145 functions. This change also alters the storage and management of global
2146 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
2147 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
2148 index counters. The API functions that use this state have been changed
2149 to take a "class_index" rather than pointers to the class's local STACK
2150 and counter, and there is now an API function to dynamically create new
2151 classes. This centralisation allows us to (a) plug a lot of the
2152 thread-safety problems that existed, and (b) makes it possible to clean
2153 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
2154 such data would previously have always leaked in application code and
2155 workarounds were in place to make the memory debugging turn a blind eye
2156 to it. Application code that doesn't use this new function will still
2157 leak as before, but their memory debugging output will announce it now
2158 rather than letting it slide.
2160 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
2161 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
2162 has a return value to indicate success or failure.
2165 *) Make it possible to replace the underlying "ERR" functions such that the
2166 global state (2 LHASH tables and 2 locks) is only used by the "default"
2167 implementation. This change also adds two functions to "get" and "set"
2168 the implementation prior to it being automatically set the first time
2169 any other ERR function takes place. Ie. an application can call "get",
2170 pass the return value to a module it has just loaded, and that module
2171 can call its own "set" function using that value. This means the
2172 module's "ERR" operations will use (and modify) the error state in the
2173 application and not in its own statically linked copy of OpenSSL code.
2176 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
2177 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
2178 the operation, and provides a more encapsulated way for external code
2179 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
2180 to use these functions rather than manually incrementing the counts.
2182 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
2185 *) Add EVP test program.
2188 *) Add symmetric cipher support to ENGINE. Expect the API to change!
2191 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
2192 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
2193 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
2194 These allow a CRL to be built without having to access X509_CRL fields
2195 directly. Modify 'ca' application to use new functions.
2198 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
2199 bug workarounds. Rollback attack detection is a security feature.
2200 The problem will only arise on OpenSSL servers when TLSv1 is not
2201 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
2202 Software authors not wanting to support TLSv1 will have special reasons
2203 for their choice and can explicitly enable this option.
2204 [Bodo Moeller, Lutz Jaenicke]
2206 *) Rationalise EVP so it can be extended: don't include a union of
2207 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
2208 (similar to those existing for EVP_CIPHER_CTX).
2213 EVP_MD_CTX_init(&md); /* new function call */
2214 EVP_DigestInit(&md, EVP_sha1());
2215 EVP_DigestUpdate(&md, in, len);
2216 EVP_DigestFinal(&md, out, NULL);
2217 EVP_MD_CTX_cleanup(&md); /* new function call */
2221 *) Make DES key schedule conform to the usual scheme, as well as
2222 correcting its structure. This means that calls to DES functions
2223 now have to pass a pointer to a des_key_schedule instead of a
2224 plain des_key_schedule (which was actually always a pointer
2227 des_key_schedule ks;
2229 des_set_key_checked(..., &ks);
2230 des_ncbc_encrypt(..., &ks, ...);
2232 (Note that a later change renames 'des_...' into 'DES_...'.)
2235 *) Initial reduction of linker bloat: the use of some functions, such as
2236 PEM causes large amounts of unused functions to be linked in due to
2237 poor organisation. For example pem_all.c contains every PEM function
2238 which has a knock on effect of linking in large amounts of (unused)
2239 ASN1 code. Grouping together similar functions and splitting unrelated
2240 functions prevents this.
2243 *) Cleanup of EVP macros.
2246 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
2247 correct _ecb suffix.
2250 *) Add initial OCSP responder support to ocsp application. The
2251 revocation information is handled using the text based index
2252 use by the ca application. The responder can either handle
2253 requests generated internally, supplied in files (for example
2254 via a CGI script) or using an internal minimal server.
2257 *) Add configuration choices to get zlib compression for TLS.
2260 *) Changes to Kerberos SSL for RFC 2712 compliance:
2261 1. Implemented real KerberosWrapper, instead of just using
2262 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
2263 2. Implemented optional authenticator field of KerberosWrapper.
2265 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
2266 and authenticator structs; see crypto/krb5/.
2268 Generalized Kerberos calls to support multiple Kerberos libraries.
2269 [Vern Staats <staatsvr@asc.hpc.mil>,
2270 Jeffrey Altman <jaltman@columbia.edu>
2271 via Richard Levitte]
2273 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
2274 already does with RSA. testdsa.h now has 'priv_key/pub_key'
2275 values for each of the key sizes rather than having just
2276 parameters (and 'speed' generating keys each time).
2279 *) Speed up EVP routines.
2282 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
2283 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
2284 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
2285 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
2287 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
2288 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
2289 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
2292 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
2294 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
2297 *) Added the OS2-EMX target.
2298 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
2300 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
2301 to support NCONF routines in extension code. New function CONF_set_nconf()
2302 to allow functions which take an NCONF to also handle the old LHASH
2303 structure: this means that the old CONF compatible routines can be
2304 retained (in particular wrt extensions) without having to duplicate the
2305 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
2308 *) Enhance the general user interface with mechanisms for inner control
2309 and with possibilities to have yes/no kind of prompts.
2312 *) Change all calls to low level digest routines in the library and
2313 applications to use EVP. Add missing calls to HMAC_cleanup() and
2314 don't assume HMAC_CTX can be copied using memcpy().
2315 [Verdon Walker <VWalker@novell.com>, Steve Henson]
2317 *) Add the possibility to control engines through control names but with
2318 arbitrary arguments instead of just a string.
2319 Change the key loaders to take a UI_METHOD instead of a callback
2320 function pointer. NOTE: this breaks binary compatibility with earlier
2321 versions of OpenSSL [engine].
2322 Adapt the nCipher code for these new conditions and add a card insertion
2326 *) Enhance the general user interface with mechanisms to better support
2327 dialog box interfaces, application-defined prompts, the possibility
2328 to use defaults (for example default passwords from somewhere else)
2329 and interrupts/cancellations.
2332 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
2333 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
2336 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
2337 tidy up some unnecessarily weird code in 'sk_new()').
2338 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
2340 *) Change the key loading routines for ENGINEs to use the same kind
2341 callback (pem_password_cb) as all other routines that need this
2345 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
2346 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
2347 than this minimum value is recommended.
2350 *) New random seeder for OpenVMS, using the system process statistics
2351 that are easily reachable.
2354 *) Windows apparently can't transparently handle global
2355 variables defined in DLLs. Initialisations such as:
2357 const ASN1_ITEM *it = &ASN1_INTEGER_it;
2359 wont compile. This is used by the any applications that need to
2360 declare their own ASN1 modules. This was fixed by adding the option
2361 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
2362 needed for static libraries under Win32.
2365 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
2366 setting of purpose and trust fields. New X509_STORE trust and
2367 purpose functions and tidy up setting in other SSL functions.
2370 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
2371 structure. These are inherited by X509_STORE_CTX when it is
2372 initialised. This allows various defaults to be set in the
2373 X509_STORE structure (such as flags for CRL checking and custom
2374 purpose or trust settings) for functions which only use X509_STORE_CTX
2375 internally such as S/MIME.
2377 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
2378 trust settings if they are not set in X509_STORE. This allows X509_STORE
2379 purposes and trust (in S/MIME for example) to override any set by default.
2381 Add command line options for CRL checking to smime, s_client and s_server
2385 *) Initial CRL based revocation checking. If the CRL checking flag(s)
2386 are set then the CRL is looked up in the X509_STORE structure and
2387 its validity and signature checked, then if the certificate is found
2388 in the CRL the verify fails with a revoked error.
2390 Various new CRL related callbacks added to X509_STORE_CTX structure.
2392 Command line options added to 'verify' application to support this.
2394 This needs some additional work, such as being able to handle multiple
2395 CRLs with different times, extension based lookup (rather than just
2396 by subject name) and ultimately more complete V2 CRL extension
2400 *) Add a general user interface API (crypto/ui/). This is designed
2401 to replace things like des_read_password and friends (backward
2402 compatibility functions using this new API are provided).
2403 The purpose is to remove prompting functions from the DES code
2404 section as well as provide for prompting through dialog boxes in
2405 a window system and the like.
2408 *) Add "ex_data" support to ENGINE so implementations can add state at a
2409 per-structure level rather than having to store it globally.
2412 *) Make it possible for ENGINE structures to be copied when retrieved by
2413 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
2414 This causes the "original" ENGINE structure to act like a template,
2415 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
2416 operational state can be localised to each ENGINE structure, despite the
2417 fact they all share the same "methods". New ENGINE structures returned in
2418 this case have no functional references and the return value is the single
2419 structural reference. This matches the single structural reference returned
2420 by ENGINE_by_id() normally, when it is incremented on the pre-existing
2424 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
2425 needs to match any other type at all we need to manually clear the
2429 *) Changes to the "openssl engine" utility to include;
2430 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
2431 about an ENGINE's available control commands.
2432 - executing control commands from command line arguments using the
2433 '-pre' and '-post' switches. '-post' is only used if '-t' is
2434 specified and the ENGINE is successfully initialised. The syntax for
2435 the individual commands are colon-separated, for example;
2436 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
2439 *) New dynamic control command support for ENGINEs. ENGINEs can now
2440 declare their own commands (numbers), names (strings), descriptions,
2441 and input types for run-time discovery by calling applications. A
2442 subset of these commands are implicitly classed as "executable"
2443 depending on their input type, and only these can be invoked through
2444 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
2445 can be based on user input, config files, etc). The distinction is
2446 that "executable" commands cannot return anything other than a boolean
2447 result and can only support numeric or string input, whereas some
2448 discoverable commands may only be for direct use through
2449 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
2450 pointers, or other custom uses. The "executable" commands are to
2451 support parameterisations of ENGINE behaviour that can be
2452 unambiguously defined by ENGINEs and used consistently across any
2453 OpenSSL-based application. Commands have been added to all the
2454 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
2455 control over shared-library paths without source code alterations.
2458 *) Changed all ENGINE implementations to dynamically allocate their
2459 ENGINEs rather than declaring them statically. Apart from this being
2460 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
2461 this also allows the implementations to compile without using the
2462 internal engine_int.h header.
2465 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
2466 'const' value. Any code that should be able to modify a RAND_METHOD
2467 should already have non-const pointers to it (ie. they should only
2468 modify their own ones).
2471 *) Made a variety of little tweaks to the ENGINE code.
2472 - "atalla" and "ubsec" string definitions were moved from header files
2473 to C code. "nuron" string definitions were placed in variables
2474 rather than hard-coded - allowing parameterisation of these values
2475 later on via ctrl() commands.
2476 - Removed unused "#if 0"'d code.
2477 - Fixed engine list iteration code so it uses ENGINE_free() to release
2478 structural references.
2479 - Constified the RAND_METHOD element of ENGINE structures.
2480 - Constified various get/set functions as appropriate and added
2481 missing functions (including a catch-all ENGINE_cpy that duplicates
2482 all ENGINE values onto a new ENGINE except reference counts/state).
2483 - Removed NULL parameter checks in get/set functions. Setting a method
2484 or function to NULL is a way of cancelling out a previously set
2485 value. Passing a NULL ENGINE parameter is just plain stupid anyway
2486 and doesn't justify the extra error symbols and code.
2487 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
2488 flags from engine_int.h to engine.h.
2489 - Changed prototypes for ENGINE handler functions (init(), finish(),
2490 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
2493 *) Implement binary inversion algorithm for BN_mod_inverse in addition
2494 to the algorithm using long division. The binary algorithm can be
2495 used only if the modulus is odd. On 32-bit systems, it is faster
2496 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
2497 roughly 5-15% for 256-bit moduli), so we use it only for moduli
2498 up to 450 bits. In 64-bit environments, the binary algorithm
2499 appears to be advantageous for much longer moduli; here we use it
2500 for moduli up to 2048 bits.
2503 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
2504 could not support the combine flag in choice fields.
2507 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
2508 extensions from a certificate request to the certificate.
2511 *) Allow multiple 'certopt' and 'nameopt' options to be separated
2512 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
2513 file: this allows the display of the certificate about to be
2514 signed to be customised, to allow certain fields to be included
2515 or excluded and extension details. The old system didn't display
2516 multicharacter strings properly, omitted fields not in the policy
2517 and couldn't display additional details such as extensions.
2520 *) Function EC_POINTs_mul for multiple scalar multiplication
2521 of an arbitrary number of elliptic curve points
2522 \sum scalars[i]*points[i],
2523 optionally including the generator defined for the EC_GROUP:
2524 scalar*generator + \sum scalars[i]*points[i].
2526 EC_POINT_mul is a simple wrapper function for the typical case
2527 that the point list has just one item (besides the optional
2531 *) First EC_METHODs for curves over GF(p):
2533 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
2534 operations and provides various method functions that can also
2535 operate with faster implementations of modular arithmetic.
2537 EC_GFp_mont_method() reuses most functions that are part of
2538 EC_GFp_simple_method, but uses Montgomery arithmetic.
2540 [Bodo Moeller; point addition and point doubling
2541 implementation directly derived from source code provided by
2542 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
2544 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
2545 crypto/ec/ec_lib.c):
2547 Curves are EC_GROUP objects (with an optional group generator)
2548 based on EC_METHODs that are built into the library.
2550 Points are EC_POINT objects based on EC_GROUP objects.
2552 Most of the framework would be able to handle curves over arbitrary
2553 finite fields, but as there are no obvious types for fields other
2554 than GF(p), some functions are limited to that for now.
2557 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
2558 that the file contains a complete HTTP response.
2561 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
2562 change the def and num file printf format specifier from "%-40sXXX"
2563 to "%-39s XXX". The latter will always guarantee a space after the
2564 field while the former will cause them to run together if the field
2565 is 40 of more characters long.
2568 *) Constify the cipher and digest 'method' functions and structures
2569 and modify related functions to take constant EVP_MD and EVP_CIPHER
2573 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
2574 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
2577 *) Modify EVP_Digest*() routines so they now return values. Although the
2578 internal software routines can never fail additional hardware versions
2582 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
2584 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
2585 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
2588 ERR_R_NESTED_ASN1_ERROR
2590 ERR_R_MISSING_ASN1_EOS
2591 were 4 .. 9, conflicting with
2592 ERR_LIB_RSA (= ERR_R_RSA_LIB)
2594 ERR_LIB_PEM (= ERR_R_PEM_LIB).
2595 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
2597 Add new error code 'ERR_R_INTERNAL_ERROR'.
2600 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
2604 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
2605 sets the subject name for a new request or supersedes the
2606 subject name in a given request. Formats that can be parsed are
2607 'CN=Some Name, OU=myOU, C=IT'
2609 'CN=Some Name/OU=myOU/C=IT'.
2611 Add options '-batch' and '-verbose' to 'openssl req'.
2612 [Massimiliano Pala <madwolf@hackmasters.net>]
2614 *) Introduce the possibility to access global variables through
2615 functions on platform were that's the best way to handle exporting
2616 global variables in shared libraries. To enable this functionality,
2617 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
2618 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
2619 is normally done by Configure or something similar).
2621 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
2622 in the source file (foo.c) like this:
2624 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
2625 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
2627 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
2628 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
2630 OPENSSL_DECLARE_GLOBAL(int,foo);
2631 #define foo OPENSSL_GLOBAL_REF(foo)
2632 OPENSSL_DECLARE_GLOBAL(double,bar);
2633 #define bar OPENSSL_GLOBAL_REF(bar)
2635 The #defines are very important, and therefore so is including the
2636 header file everywhere where the defined globals are used.
2638 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
2639 of ASN.1 items, but that structure is a bit different.
2641 The largest change is in util/mkdef.pl which has been enhanced with
2642 better and easier to understand logic to choose which symbols should
2643 go into the Windows .def files as well as a number of fixes and code
2644 cleanup (among others, algorithm keywords are now sorted
2645 lexicographically to avoid constant rewrites).
2648 *) In BN_div() keep a copy of the sign of 'num' before writing the
2649 result to 'rm' because if rm==num the value will be overwritten
2650 and produce the wrong result if 'num' is negative: this caused
2651 problems with BN_mod() and BN_nnmod().
2654 *) Function OCSP_request_verify(). This checks the signature on an
2655 OCSP request and verifies the signer certificate. The signer
2656 certificate is just checked for a generic purpose and OCSP request
2660 *) Add OCSP_check_validity() function to check the validity of OCSP
2661 responses. OCSP responses are prepared in real time and may only
2662 be a few seconds old. Simply checking that the current time lies
2663 between thisUpdate and nextUpdate max reject otherwise valid responses
2664 caused by either OCSP responder or client clock inaccuracy. Instead
2665 we allow thisUpdate and nextUpdate to fall within a certain period of
2666 the current time. The age of the response can also optionally be
2667 checked. Two new options -validity_period and -status_age added to
2671 *) If signature or public key algorithm is unrecognized print out its
2672 OID rather that just UNKNOWN.
2675 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
2676 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
2677 ID to be generated from the issuer certificate alone which can then be
2678 passed to OCSP_id_issuer_cmp().
2681 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
2682 ASN1 modules to export functions returning ASN1_ITEM pointers
2683 instead of the ASN1_ITEM structures themselves. This adds several
2684 new macros which allow the underlying ASN1 function/structure to
2685 be accessed transparently. As a result code should not use ASN1_ITEM
2686 references directly (such as &X509_it) but instead use the relevant
2687 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
2688 use of the new ASN1 code on platforms where exporting structures
2689 is problematical (for example in shared libraries) but exporting
2690 functions returning pointers to structures is not.
2693 *) Add support for overriding the generation of SSL/TLS session IDs.
2694 These callbacks can be registered either in an SSL_CTX or per SSL.
2695 The purpose of this is to allow applications to control, if they wish,
2696 the arbitrary values chosen for use as session IDs, particularly as it
2697 can be useful for session caching in multiple-server environments. A
2698 command-line switch for testing this (and any client code that wishes
2699 to use such a feature) has been added to "s_server".
2700 [Geoff Thorpe, Lutz Jaenicke]
2702 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
2703 of the form '#if defined(...) || defined(...) || ...' and
2704 '#if !defined(...) && !defined(...) && ...'. This also avoids
2705 the growing number of special cases it was previously handling.
2708 *) Make all configuration macros available for application by making
2709 sure they are available in opensslconf.h, by giving them names starting
2710 with "OPENSSL_" to avoid conflicts with other packages and by making
2711 sure e_os2.h will cover all platform-specific cases together with
2713 Additionally, it is now possible to define configuration/platform-
2714 specific names (called "system identities"). In the C code, these
2715 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
2716 macro with the name beginning with "OPENSSL_SYS_", which is determined
2717 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
2721 *) New option -set_serial to 'req' and 'x509' this allows the serial
2722 number to use to be specified on the command line. Previously self
2723 signed certificates were hard coded with serial number 0 and the
2724 CA options of 'x509' had to use a serial number in a file which was
2728 *) New options to 'ca' utility to support V2 CRL entry extensions.
2729 Currently CRL reason, invalidity date and hold instruction are
2730 supported. Add new CRL extensions to V3 code and some new objects.
2733 *) New function EVP_CIPHER_CTX_set_padding() this is used to
2734 disable standard block padding (aka PKCS#5 padding) in the EVP
2735 API, which was previously mandatory. This means that the data is
2736 not padded in any way and so the total length much be a multiple
2737 of the block size, otherwise an error occurs.
2740 *) Initial (incomplete) OCSP SSL support.
2743 *) New function OCSP_parse_url(). This splits up a URL into its host,
2744 port and path components: primarily to parse OCSP URLs. New -url
2745 option to ocsp utility.
2748 *) New nonce behavior. The return value of OCSP_check_nonce() now
2749 reflects the various checks performed. Applications can decide
2750 whether to tolerate certain situations such as an absent nonce
2751 in a response when one was present in a request: the ocsp application
2752 just prints out a warning. New function OCSP_add1_basic_nonce()
2753 this is to allow responders to include a nonce in a response even if
2754 the request is nonce-less.
2757 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
2758 skipped when using openssl x509 multiple times on a single input file,
2759 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
2762 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
2763 set string type: to handle setting ASN1_TIME structures. Fix ca
2764 utility to correctly initialize revocation date of CRLs.
2767 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
2768 the clients preferred ciphersuites and rather use its own preferences.
2769 Should help to work around M$ SGC (Server Gated Cryptography) bug in
2770 Internet Explorer by ensuring unchanged hash method during stepup.
2771 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
2774 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
2775 to aes and add a new 'exist' option to print out symbols that don't
2779 *) Additional options to ocsp utility to allow flags to be set and
2780 additional certificates supplied.
2783 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
2784 OCSP client a number of certificate to only verify the response
2788 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
2789 handle the new API. Currently only ECB, CBC modes supported. Add new
2792 Add TLS AES ciphersuites as described in RFC3268, "Advanced
2793 Encryption Standard (AES) Ciphersuites for Transport Layer
2794 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
2795 not enabled by default and were not part of the "ALL" ciphersuite
2796 alias because they were not yet official; they could be
2797 explicitly requested by specifying the "AESdraft" ciphersuite
2798 group alias. In the final release of OpenSSL 0.9.7, the group
2799 alias is called "AES" and is part of "ALL".)
2800 [Ben Laurie, Steve Henson, Bodo Moeller]
2802 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
2803 request to response.
2806 *) Functions for OCSP responders. OCSP_request_onereq_count(),
2807 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
2808 extract information from a certificate request. OCSP_response_create()
2809 creates a response and optionally adds a basic response structure.
2810 OCSP_basic_add1_status() adds a complete single response to a basic
2811 response and returns the OCSP_SINGLERESP structure just added (to allow
2812 extensions to be included for example). OCSP_basic_add1_cert() adds a
2813 certificate to a basic response and OCSP_basic_sign() signs a basic
2814 response with various flags. New helper functions ASN1_TIME_check()
2815 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
2816 (converts ASN1_TIME to GeneralizedTime).
2819 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
2820 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
2821 structure from a certificate. X509_pubkey_digest() digests the public_key
2822 contents: this is used in various key identifiers.
2825 *) Make sk_sort() tolerate a NULL argument.
2826 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
2828 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
2829 passed by the function are trusted implicitly. If any of them signed the
2830 response then it is assumed to be valid and is not verified.
2833 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
2834 to data. This was previously part of the PKCS7 ASN1 code. This
2835 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
2836 [Steve Henson, reported by Kenneth R. Robinette
2837 <support@securenetterm.com>]
2839 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
2840 routines: without these tracing memory leaks is very painful.
2841 Fix leaks in PKCS12 and PKCS7 routines.
2844 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
2845 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
2846 effectively meant GeneralizedTime would never be used. Now it
2847 is initialised to -1 but X509_time_adj() now has to check the value
2848 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
2849 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
2850 [Steve Henson, reported by Kenneth R. Robinette
2851 <support@securenetterm.com>]
2853 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
2854 result in a zero length in the ASN1_INTEGER structure which was
2855 not consistent with the structure when d2i_ASN1_INTEGER() was used
2856 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
2857 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
2858 where it did not print out a minus for negative ASN1_INTEGER.
2861 *) Add summary printout to ocsp utility. The various functions which
2862 convert status values to strings have been renamed to:
2863 OCSP_response_status_str(), OCSP_cert_status_str() and
2864 OCSP_crl_reason_str() and are no longer static. New options
2865 to verify nonce values and to disable verification. OCSP response
2866 printout format cleaned up.
2869 *) Add additional OCSP certificate checks. These are those specified
2870 in RFC2560. This consists of two separate checks: the CA of the
2871 certificate being checked must either be the OCSP signer certificate
2872 or the issuer of the OCSP signer certificate. In the latter case the
2873 OCSP signer certificate must contain the OCSP signing extended key
2874 usage. This check is performed by attempting to match the OCSP
2875 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
2876 in the OCSP_CERTID structures of the response.
2879 *) Initial OCSP certificate verification added to OCSP_basic_verify()
2880 and related routines. This uses the standard OpenSSL certificate
2881 verify routines to perform initial checks (just CA validity) and
2882 to obtain the certificate chain. Then additional checks will be
2883 performed on the chain. Currently the root CA is checked to see
2884 if it is explicitly trusted for OCSP signing. This is used to set
2885 a root CA as a global signing root: that is any certificate that
2886 chains to that CA is an acceptable OCSP signing certificate.
2889 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
2890 extensions from a separate configuration file.
2891 As when reading extensions from the main configuration file,
2892 the '-extensions ...' option may be used for specifying the
2894 [Massimiliano Pala <madwolf@comune.modena.it>]
2896 *) New OCSP utility. Allows OCSP requests to be generated or
2897 read. The request can be sent to a responder and the output
2898 parsed, outputed or printed in text form. Not complete yet:
2899 still needs to check the OCSP response validity.
2902 *) New subcommands for 'openssl ca':
2903 'openssl ca -status <serial>' prints the status of the cert with
2904 the given serial number (according to the index file).
2905 'openssl ca -updatedb' updates the expiry status of certificates
2907 [Massimiliano Pala <madwolf@comune.modena.it>]
2909 *) New '-newreq-nodes' command option to CA.pl. This is like
2910 '-newreq', but calls 'openssl req' with the '-nodes' option
2911 so that the resulting key is not encrypted.
2912 [Damien Miller <djm@mindrot.org>]
2914 *) New configuration for the GNU Hurd.
2915 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
2917 *) Initial code to implement OCSP basic response verify. This
2918 is currently incomplete. Currently just finds the signer's
2919 certificate and verifies the signature on the response.
2922 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
2923 value of OPENSSLDIR. This is available via the new '-d' option
2924 to 'openssl version', and is also included in 'openssl version -a'.
2927 *) Allowing defining memory allocation callbacks that will be given
2928 file name and line number information in additional arguments
2929 (a const char* and an int). The basic functionality remains, as
2930 well as the original possibility to just replace malloc(),
2931 realloc() and free() by functions that do not know about these
2932 additional arguments. To register and find out the current
2933 settings for extended allocation functions, the following
2934 functions are provided:
2936 CRYPTO_set_mem_ex_functions
2937 CRYPTO_set_locked_mem_ex_functions
2938 CRYPTO_get_mem_ex_functions
2939 CRYPTO_get_locked_mem_ex_functions
2941 These work the same way as CRYPTO_set_mem_functions and friends.
2942 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
2943 extended allocation function is enabled.
2944 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
2945 a conventional allocation function is enabled.
2946 [Richard Levitte, Bodo Moeller]
2948 *) Finish off removing the remaining LHASH function pointer casts.
2949 There should no longer be any prototype-casting required when using
2950 the LHASH abstraction, and any casts that remain are "bugs". See
2951 the callback types and macros at the head of lhash.h for details
2952 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
2955 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
2956 If /dev/[u]random devices are not available or do not return enough
2957 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
2959 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
2960 /etc/entropy will be queried once each in this sequence, quering stops
2961 when enough entropy was collected without querying more sockets.
2964 *) Change the Unix RAND_poll() variant to be able to poll several
2965 random devices, as specified by DEVRANDOM, until a sufficient amount
2966 of data has been collected. We spend at most 10 ms on each file
2967 (select timeout) and read in non-blocking mode. DEVRANDOM now
2968 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
2969 (previously it was just the string "/dev/urandom"), so on typical
2970 platforms the 10 ms delay will never occur.
2971 Also separate out the Unix variant to its own file, rand_unix.c.
2972 For VMS, there's a currently-empty rand_vms.c.
2975 *) Move OCSP client related routines to ocsp_cl.c. These
2976 provide utility functions which an application needing
2977 to issue a request to an OCSP responder and analyse the
2978 response will typically need: as opposed to those which an
2979 OCSP responder itself would need which will be added later.
2981 OCSP_request_sign() signs an OCSP request with an API similar
2982 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
2983 response. OCSP_response_get1_basic() extracts basic response
2984 from response. OCSP_resp_find_status(): finds and extracts status
2985 information from an OCSP_CERTID structure (which will be created
2986 when the request structure is built). These are built from lower
2987 level functions which work on OCSP_SINGLERESP structures but
2988 wont normally be used unless the application wishes to examine
2989 extensions in the OCSP response for example.
2991 Replace nonce routines with a pair of functions.
2992 OCSP_request_add1_nonce() adds a nonce value and optionally
2993 generates a random value. OCSP_check_nonce() checks the
2994 validity of the nonce in an OCSP response.
2997 *) Change function OCSP_request_add() to OCSP_request_add0_id().
2998 This doesn't copy the supplied OCSP_CERTID and avoids the
2999 need to free up the newly created id. Change return type
3000 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
3001 This can then be used to add extensions to the request.
3002 Deleted OCSP_request_new(), since most of its functionality
3003 is now in OCSP_REQUEST_new() (and the case insensitive name
3004 clash) apart from the ability to set the request name which
3005 will be added elsewhere.
3008 *) Update OCSP API. Remove obsolete extensions argument from
3009 various functions. Extensions are now handled using the new
3010 OCSP extension code. New simple OCSP HTTP function which
3011 can be used to send requests and parse the response.
3014 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
3015 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
3016 uses the special reorder version of SET OF to sort the attributes
3017 and reorder them to match the encoded order. This resolves a long
3018 standing problem: a verify on a PKCS7 structure just after signing
3019 it used to fail because the attribute order did not match the
3020 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
3021 it uses the received order. This is necessary to tolerate some broken
3022 software that does not order SET OF. This is handled by encoding
3023 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
3024 to produce the required SET OF.
3027 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
3028 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
3029 files to get correct declarations of the ASN.1 item variables.
3032 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
3033 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
3034 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
3035 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
3036 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
3037 ASN1_ITEM and no wrapper functions.
3040 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
3041 replace the old function pointer based I/O routines. Change most of
3042 the *_d2i_bio() and *_d2i_fp() functions to use these.
3045 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
3046 lines, recognice more "algorithms" that can be deselected, and make
3047 it complain about algorithm deselection that isn't recognised.
3050 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
3051 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
3052 to use new functions. Add NO_ASN1_OLD which can be set to remove
3053 some old style ASN1 functions: this can be used to determine if old
3054 code will still work when these eventually go away.
3057 *) New extension functions for OCSP structures, these follow the
3058 same conventions as certificates and CRLs.
3061 *) New function X509V3_add1_i2d(). This automatically encodes and
3062 adds an extension. Its behaviour can be customised with various
3063 flags to append, replace or delete. Various wrappers added for
3064 certifcates and CRLs.
3067 *) Fix to avoid calling the underlying ASN1 print routine when
3068 an extension cannot be parsed. Correct a typo in the
3069 OCSP_SERVICELOC extension. Tidy up print OCSP format.
3072 *) Make mkdef.pl parse some of the ASN1 macros and add apropriate
3073 entries for variables.
3076 *) Add functionality to apps/openssl.c for detecting locking
3077 problems: As the program is single-threaded, all we have
3078 to do is register a locking callback using an array for
3079 storing which locks are currently held by the program.
3082 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
3083 SSL_get_ex_data_X509_STORE_idx(), which is used in
3084 ssl_verify_cert_chain() and thus can be called at any time
3085 during TLS/SSL handshakes so that thread-safety is essential.
3086 Unfortunately, the ex_data design is not at all suited
3087 for multi-threaded use, so it probably should be abolished.
3090 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
3091 [Broadcom, tweaked and integrated by Geoff Thorpe]
3093 *) Move common extension printing code to new function
3094 X509V3_print_extensions(). Reorganise OCSP print routines and
3095 implement some needed OCSP ASN1 functions. Add OCSP extensions.
3098 *) New function X509_signature_print() to remove duplication in some
3102 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
3103 set (this was treated exactly the same as SET OF previously). This
3104 is used to reorder the STACK representing the structure to match the
3105 encoding. This will be used to get round a problem where a PKCS7
3106 structure which was signed could not be verified because the STACK
3107 order did not reflect the encoded order.
3110 *) Reimplement the OCSP ASN1 module using the new code.
3113 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
3114 for its ASN1 operations. The old style function pointers still exist
3115 for now but they will eventually go away.
3118 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
3119 completely replaces the old ASN1 functionality with a table driven
3120 encoder and decoder which interprets an ASN1_ITEM structure describing
3121 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
3122 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
3123 has also been converted to the new form.
3126 *) Change BN_mod_exp_recp so that negative moduli are tolerated
3127 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
3128 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
3129 for negative moduli.
3132 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
3133 of not touching the result's sign bit.
3136 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
3140 *) Changed the LHASH code to use prototypes for callbacks, and created
3141 macros to declare and implement thin (optionally static) functions
3142 that provide type-safety and avoid function pointer casting for the
3143 type-specific callbacks.
3146 *) Added Kerberos Cipher Suites to be used with TLS, as written in
3148 [Veers Staats <staatsvr@asc.hpc.mil>,
3149 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
3151 *) Reformat the FAQ so the different questions and answers can be divided
3152 in sections depending on the subject.
3155 *) Have the zlib compression code load ZLIB.DLL dynamically under
3159 *) New function BN_mod_sqrt for computing square roots modulo a prime
3160 (using the probabilistic Tonelli-Shanks algorithm unless
3161 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
3162 be handled deterministically).
3163 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
3165 *) Make BN_mod_inverse faster by explicitly handling small quotients
3166 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
3167 512 bits], about 30% for larger ones [1024 or 2048 bits].)
3170 *) New function BN_kronecker.
3173 *) Fix BN_gcd so that it works on negative inputs; the result is
3174 positive unless both parameters are zero.
3175 Previously something reasonably close to an infinite loop was
3176 possible because numbers could be growing instead of shrinking
3177 in the implementation of Euclid's algorithm.
3180 *) Fix BN_is_word() and BN_is_one() macros to take into account the
3181 sign of the number in question.
3183 Fix BN_is_word(a,w) to work correctly for w == 0.
3185 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
3186 because its test if the absolute value of 'a' equals 'w'.
3187 Note that BN_abs_is_word does *not* handle w == 0 reliably;
3188 it exists mostly for use in the implementations of BN_is_zero(),
3189 BN_is_one(), and BN_is_word().
3192 *) New function BN_swap.
3195 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
3196 the exponentiation functions are more likely to produce reasonable
3197 results on negative inputs.
3200 *) Change BN_mod_mul so that the result is always non-negative.
3201 Previously, it could be negative if one of the factors was negative;
3202 I don't think anyone really wanted that behaviour.
3205 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
3206 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
3207 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
3208 and add new functions:
3217 BN_mod_lshift1_quick
3221 These functions always generate non-negative results.
3223 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
3224 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
3226 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
3227 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
3228 be reduced modulo m.
3229 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
3232 The following entry accidentily appeared in the CHANGES file
3233 distributed with OpenSSL 0.9.7. The modifications described in
3234 it do *not* apply to OpenSSL 0.9.7.
3236 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
3237 was actually never needed) and in BN_mul(). The removal in BN_mul()
3238 required a small change in bn_mul_part_recursive() and the addition
3239 of the functions bn_cmp_part_words(), bn_sub_part_words() and
3240 bn_add_part_words(), which do the same thing as bn_cmp_words(),
3241 bn_sub_words() and bn_add_words() except they take arrays with
3246 *) In 'openssl passwd', verify passwords read from the terminal
3247 unless the '-salt' option is used (which usually means that
3248 verification would just waste user's time since the resulting
3249 hash is going to be compared with some given password hash)
3250 or the new '-noverify' option is used.
3252 This is an incompatible change, but it does not affect
3253 non-interactive use of 'openssl passwd' (passwords on the command
3254 line, '-stdin' option, '-in ...' option) and thus should not
3258 *) Remove all references to RSAref, since there's no more need for it.
3261 *) Make DSO load along a path given through an environment variable
3262 (SHLIB_PATH) with shl_load().
3265 *) Constify the ENGINE code as a result of BIGNUM constification.
3266 Also constify the RSA code and most things related to it. In a
3267 few places, most notable in the depth of the ASN.1 code, ugly
3268 casts back to non-const were required (to be solved at a later
3272 *) Make it so the openssl application has all engines loaded by default.
3275 *) Constify the BIGNUM routines a little more.
3278 *) Add the following functions:
3280 ENGINE_load_cswift()
3282 ENGINE_load_atalla()
3284 ENGINE_load_builtin_engines()
3286 That way, an application can itself choose if external engines that
3287 are built-in in OpenSSL shall ever be used or not. The benefit is
3288 that applications won't have to be linked with libdl or other dso
3289 libraries unless it's really needed.
3291 Changed 'openssl engine' to load all engines on demand.
3292 Changed the engine header files to avoid the duplication of some
3293 declarations (they differed!).
3296 *) 'openssl engine' can now list capabilities.
3299 *) Better error reporting in 'openssl engine'.
3302 *) Never call load_dh_param(NULL) in s_server.
3305 *) Add engine application. It can currently list engines by name and
3306 identity, and test if they are actually available.
3309 *) Improve RPM specification file by forcing symbolic linking and making
3310 sure the installed documentation is also owned by root.root.
3311 [Damien Miller <djm@mindrot.org>]
3313 *) Give the OpenSSL applications more possibilities to make use of
3314 keys (public as well as private) handled by engines.
3317 *) Add OCSP code that comes from CertCo.
3320 *) Add VMS support for the Rijndael code.
3323 *) Added untested support for Nuron crypto accelerator.
3326 *) Add support for external cryptographic devices. This code was
3327 previously distributed separately as the "engine" branch.
3328 [Geoff Thorpe, Richard Levitte]
3330 *) Rework the filename-translation in the DSO code. It is now possible to
3331 have far greater control over how a "name" is turned into a filename
3332 depending on the operating environment and any oddities about the
3333 different shared library filenames on each system.
3336 *) Support threads on FreeBSD-elf in Configure.
3339 *) Fix for SHA1 assembly problem with MASM: it produces
3340 warnings about corrupt line number information when assembling
3341 with debugging information. This is caused by the overlapping
3343 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
3346 NCONF_get_number() has no error checking at all. As a replacement,
3347 NCONF_get_number_e() is defined (_e for "error checking") and is
3348 promoted strongly. The old NCONF_get_number is kept around for
3349 binary backward compatibility.
3350 Make it possible for methods to load from something other than a BIO,
3351 by providing a function pointer that is given a name instead of a BIO.
3352 For example, this could be used to load configuration data from an
3356 *) Fix for non blocking accept BIOs. Added new I/O special reason
3357 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
3358 with non blocking I/O was not possible because no retry code was
3359 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
3363 *) Added the beginnings of Rijndael support.
3366 *) Fix for bug in DirectoryString mask setting. Add support for
3367 X509_NAME_print_ex() in 'req' and X509_print_ex() function
3368 to allow certificate printing to more controllable, additional
3369 'certopt' option to 'x509' to allow new printing options to be
3373 *) Clean old EAY MD5 hack from e_os.h.
3376 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
3378 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
3379 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
3380 [Joe Orton, Steve Henson]
3382 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
3384 *) Fix additional bug revealed by the NISCC test suite:
3386 Stop bug triggering large recursion when presented with
3387 certain ASN.1 tags (CVE-2003-0851)
3390 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
3392 *) Fix various bugs revealed by running the NISCC test suite:
3394 Stop out of bounds reads in the ASN1 code when presented with
3395 invalid tags (CVE-2003-0543 and CVE-2003-0544).
3397 If verify callback ignores invalid public key errors don't try to check
3398 certificate signature with the NULL public key.
3402 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
3403 if the server requested one: as stated in TLS 1.0 and SSL 3.0
3407 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
3408 extra data after the compression methods not only for TLS 1.0
3409 but also for SSL 3.0 (as required by the specification).
3410 [Bodo Moeller; problem pointed out by Matthias Loepfe]
3412 *) Change X509_certificate_type() to mark the key as exported/exportable
3413 when it's 512 *bits* long, not 512 bytes.
3416 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
3418 *) Countermeasure against the Klima-Pokorny-Rosa extension of
3419 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
3420 a protocol version number mismatch like a decryption error
3421 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
3424 *) Turn on RSA blinding by default in the default implementation
3425 to avoid a timing attack. Applications that don't want it can call
3426 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
3427 They would be ill-advised to do so in most cases.
3428 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
3430 *) Change RSA blinding code so that it works when the PRNG is not
3431 seeded (in this case, the secret RSA exponent is abused as
3432 an unpredictable seed -- if it is not unpredictable, there
3433 is no point in blinding anyway). Make RSA blinding thread-safe
3434 by remembering the creator's thread ID in rsa->blinding and
3435 having all other threads use local one-time blinding factors
3436 (this requires more computation than sharing rsa->blinding, but
3437 avoids excessive locking; and if an RSA object is not shared
3438 between threads, blinding will still be very fast).
3441 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
3443 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
3444 via timing by performing a MAC computation even if incorrrect
3445 block cipher padding has been found. This is a countermeasure
3446 against active attacks where the attacker has to distinguish
3447 between bad padding and a MAC verification error. (CVE-2003-0078)
3449 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
3450 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
3451 Martin Vuagnoux (EPFL, Ilion)]
3453 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
3455 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
3456 memory from it's contents. This is done with a counter that will
3457 place alternating values in each byte. This can be used to solve
3458 two issues: 1) the removal of calls to memset() by highly optimizing
3459 compilers, and 2) cleansing with other values than 0, since those can
3460 be read through on certain media, for example a swap space on disk.
3463 *) Bugfix: client side session caching did not work with external caching,
3464 because the session->cipher setting was not restored when reloading
3465 from the external cache. This problem was masked, when
3466 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
3467 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
3470 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
3471 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
3472 [Zeev Lieber <zeev-l@yahoo.com>]
3474 *) Undo an undocumented change introduced in 0.9.6e which caused
3475 repeated calls to OpenSSL_add_all_ciphers() and
3476 OpenSSL_add_all_digests() to be ignored, even after calling
3480 *) Change the default configuration reader to deal with last line not
3481 being properly terminated.
3484 *) Change X509_NAME_cmp() so it applies the special rules on handling
3485 DN values that are of type PrintableString, as well as RDNs of type
3486 emailAddress where the value has the type ia5String.
3487 [stefank@valicert.com via Richard Levitte]
3489 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
3490 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
3491 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
3492 the bitwise-OR of the two for use by the majority of applications
3493 wanting this behaviour, and update the docs. The documented
3494 behaviour and actual behaviour were inconsistent and had been
3495 changing anyway, so this is more a bug-fix than a behavioural
3497 [Geoff Thorpe, diagnosed by Nadav Har'El]
3499 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
3500 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
3503 *) Fix initialization code race conditions in
3504 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
3505 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
3506 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
3507 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
3508 ssl2_get_cipher_by_char(),
3509 ssl3_get_cipher_by_char().
3510 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
3512 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
3513 the cached sessions are flushed, as the remove_cb() might use ex_data
3514 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
3515 (see [openssl.org #212]).
3516 [Geoff Thorpe, Lutz Jaenicke]
3518 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
3519 length, instead of the encoding length to d2i_ASN1_OBJECT.
3522 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
3524 *) [In 0.9.6g-engine release:]
3525 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
3526 [Lynn Gazis <lgazis@rainbow.com>]
3528 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
3530 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
3531 and get fix the header length calculation.
3532 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
3533 Alon Kantor <alonk@checkpoint.com> (and others),
3536 *) Use proper error handling instead of 'assertions' in buffer
3537 overflow checks added in 0.9.6e. This prevents DoS (the
3538 assertions could call abort()).
3539 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
3541 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
3543 *) Add various sanity checks to asn1_get_length() to reject
3544 the ASN1 length bytes if they exceed sizeof(long), will appear
3545 negative or the content length exceeds the length of the
3547 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
3549 *) Fix cipher selection routines: ciphers without encryption had no flags
3550 for the cipher strength set and where therefore not handled correctly
3551 by the selection routines (PR #130).
3554 *) Fix EVP_dsa_sha macro.
3558 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
3559 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
3560 that was added in OpenSSL 0.9.6d.
3562 As the countermeasure turned out to be incompatible with some
3563 broken SSL implementations, the new option is part of SSL_OP_ALL.
3564 SSL_OP_ALL is usually employed when compatibility with weird SSL
3565 implementations is desired (e.g. '-bugs' option to 's_client' and
3566 's_server'), so the new option is automatically set in many
3570 *) Changes in security patch:
3572 Changes marked "(CHATS)" were sponsored by the Defense Advanced
3573 Research Projects Agency (DARPA) and Air Force Research Laboratory,
3574 Air Force Materiel Command, USAF, under agreement number
3577 *) Add various sanity checks to asn1_get_length() to reject
3578 the ASN1 length bytes if they exceed sizeof(long), will appear
3579 negative or the content length exceeds the length of the
3580 supplied buffer. (CVE-2002-0659)
3581 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
3583 *) Assertions for various potential buffer overflows, not known to
3585 [Ben Laurie (CHATS)]
3587 *) Various temporary buffers to hold ASCII versions of integers were
3588 too small for 64 bit platforms. (CVE-2002-0655)
3589 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
3591 *) Remote buffer overflow in SSL3 protocol - an attacker could
projects / openssl.git / blob