5 Changes between 0.9.8e and 0.9.9 [xx XXX xxxx]
7 *) Change ssl_create_cipher_list() so that it automatically
8 arranges the ciphersuites in reasonable order before starting
9 to process the rule string. Thus, the definition for "DEFAULT"
10 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
11 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
12 This makes it much easier to arrive at a reasonable default order
13 in applications for which anonymous ciphers are OK (meaning
14 that you can't actually use DEFAULT).
15 [Bodo Moeller; suggested by Victor Duchovni]
17 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
18 processing) into multiple integers instead of setting
19 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
20 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
21 (These masks as well as the individual bit definitions are hidden
22 away into the non-exported interface ssl/ssl_locl.h, so this
23 change to the definition of the SSL_CIPHER structure shouldn't
24 affect applications.) This give us more bits for each of these
25 categories, so there is no longer a need to coagulate AES128 and
26 AES256 into a single algorithm bit, and to coagulate Camellia128
27 and Camellia256 into a single algorithm bit, which has led to all
30 Thus, among other things, the kludge introduced in 0.9.7m and
31 0.9.8e for masking out AES256 independently of AES128 or masking
32 out Camellia256 independently of AES256 is not needed here in 0.9.9.
34 With the change, we also introduce new ciphersuite aliases that
35 so far were missing: "AES128", "AES256", "CAMELLIA128", and
39 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
40 Use the leftmost N bytes of the signature input if the input is
41 larger than the prime q (with N being the size in bytes of q).
44 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
45 it yet and it is largely untested.
48 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
51 *) Initial incomplete changes to avoid need for function casts in OpenSSL
52 when OPENSSL_NO_FCAST is set: some compilers (gcc 4.2 and later) reject
53 their use. Safestack is reimplemented using inline functions: tests show
54 that these calls are typically optimized away by compilers so they have
55 no additional overhead. Update ASN1 to avoid use of legacy functions.
58 *) Win32/64 targets are linked with Winsock2.
61 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
62 to external functions. This can be used to increase CRL handling
63 efficiency especially when CRLs are very large by (for example) storing
64 the CRL revoked certificates in a database.
67 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
68 new CRLs added to a directory can be used. New command line option
69 -verify_return_error to s_client and s_server. This causes real errors
70 to be returned by the verify callback instead of carrying on no matter
71 what. This reflects the way a "real world" verify callback would behave.
74 *) GOST engine, supporting several GOST algorithms and public key formats.
75 Kindly donated by Cryptocom.
78 *) Partial support for Issuing Distribution Point CRL extension. CRLs
79 partitioned by DP are handled but no indirect CRL or reason partitioning
80 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
81 selected via a scoring technique which handles IDP and AKID in CRLs.
84 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
85 will ultimately be used for all verify operations: this will remove the
86 X509_STORE dependency on certificate verification and allow alternative
87 lookup methods. X509_STORE based implementations of these two callbacks.
90 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
91 Modify get_crl() to find a valid (unexpired) CRL if possible.
94 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
95 this would be called X509_CRL_cmp() but that name is already used by
96 a function that just compares CRL issuer names. Cache several CRL
97 extensions in X509_CRL structure and cache CRLDP in X509.
100 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
101 this maps equivalent X509_NAME structures into a consistent structure.
102 Name comparison can then be performed rapidly using memcmp().
105 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
109 *) Allow digests to supply their own micalg string for S/MIME type using
110 the ctrl EVP_MD_CTRL_MICALG.
113 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
114 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
115 ctrl. It can then customise the structure before and/or after signing
119 *) New function OBJ_add_sigid() to allow application defined signature OIDs
120 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
121 to free up any added signature OIDs.
124 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
125 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
126 digest and cipher tables. New options added to openssl utility:
127 list-message-digest-algorithms and list-cipher-algorithms.
130 *) In addition to the numerical (unsigned long) thread ID, provide
131 for a pointer (void *) thread ID. This helps accomodate systems
132 that do not provide an unsigned long thread ID. OpenSSL assumes
133 it is in the same thread iff both the numerical and the pointer
134 thread ID agree; so applications are just required to define one
135 of them appropriately (e.g., by using a pointer to a per-thread
136 memory object malloc()ed by the application for the pointer-type
137 thread ID). Exactly analoguous to the existing functions
139 void CRYPTO_set_id_callback(unsigned long (*func)(void));
140 unsigned long (*CRYPTO_get_id_callback(void))(void);
141 unsigned long CRYPTO_thread_id(void);
143 we now have additional functions
145 void CRYPTO_set_idptr_callback(void *(*func)(void));
146 void *(*CRYPTO_get_idptr_callback(void))(void);
147 void *CRYPTO_thread_idptr(void);
149 also in <openssl/crypto.h>. The default value for
150 CRYPTO_thread_idptr() if the application has not provided its own
154 *) Change the array representation of binary polynomials: the list
155 of degrees of non-zero coefficients is now terminated with -1.
156 Previously it was terminated with 0, which was also part of the
157 value; thus, the array representation was not applicable to
158 polynomials where t^0 has coefficient zero. This change makes
159 the array representation useful in a more general context.
162 *) Various modifications and fixes to SSL/TLS cipher string
163 handling. For ECC, the code now distinguishes between fixed ECDH
164 with RSA certificates on the one hand and with ECDSA certificates
165 on the other hand, since these are separate ciphersuites. The
166 unused code for Fortezza ciphersuites has been removed.
168 For consistency with EDH, ephemeral ECDH is now called "EECDH"
169 (not "ECDHE"). For consistency with the code for DH
170 certificates, use of ECDH certificates is now considered ECDH
171 authentication, not RSA or ECDSA authentication (the latter is
172 merely the CA's signing algorithm and not actively used in the
175 The temporary ciphersuite alias "ECCdraft" is no longer
176 available, and ECC ciphersuites are no longer excluded from "ALL"
177 and "DEFAULT". The following aliases now exist for RFC 4492
178 ciphersuites, most of these by analogy with the DH case:
180 kECDHr - ECDH cert, signed with RSA
181 kECDHe - ECDH cert, signed with ECDSA
182 kECDH - ECDH cert (signed with either RSA or ECDSA)
183 kEECDH - ephemeral ECDH
184 ECDH - ECDH cert or ephemeral ECDH
190 AECDH - anonymous ECDH
191 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
195 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
196 Use correct micalg parameters depending on digest(s) in signed message.
199 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
200 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
203 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
204 an engine to register a method. Add ENGINE lookups for methods and
205 functional reference processing.
208 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
209 EVP_{Sign,Verify}* which allow an application to customise the signature
213 *) New -resign option to smime utility. This adds one or more signers
214 to an existing PKCS#7 signedData structure. Also -md option to use an
215 alternative message digest algorithm for signing.
218 *) Tidy up PKCS#7 routines and add new functions to make it easier to
219 create PKCS7 structures containing multiple signers. Update smime
220 application to support multiple signers.
223 *) New -macalg option to pkcs12 utility to allow setting of an alternative
227 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
228 Reorganize PBE internals to lookup from a static table using NIDs,
229 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
230 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
231 PRF which will be automatically used with PBES2.
234 *) Replace the algorithm specific calls to generate keys in "req" with the
238 *) Update PKCS#7 enveloped data routines to use new API. This is now
239 supported by any public key method supporting the encrypt operation. A
240 ctrl is added to allow the public key algorithm to examine or modify
241 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
245 *) Add a ctrl to asn1 method to allow a public key algorithm to express
246 a default digest type to use. In most cases this will be SHA1 but some
247 algorithms (such as GOST) need to specify an alternative digest. The
248 return value indicates how strong the prefernce is 1 means optional and
249 2 is mandatory (that is it is the only supported type). Modify
250 ASN1_item_sign() to accept a NULL digest argument to indicate it should
251 use the default md. Update openssl utilities to use the default digest
252 type for signing if it is not explicitly indicated.
255 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
256 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
257 signing method from the key type. This effectively removes the link
258 between digests and public key types.
261 *) Add an OID cross reference table and utility functions. Its purpose is to
262 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
263 rsaEncryption. This will allow some of the algorithm specific hackery
264 needed to use the correct OID to be removed.
267 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
268 structures for PKCS7_sign(). They are now set up by the relevant public
272 *) Add provisional EC pkey method with support for ECDSA and ECDH.
275 *) Add support for key derivation (agreement) in the API, DH method and
279 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
280 public and private key formats. As a side effect these add additional
281 command line functionality not previously available: DSA signatures can be
282 generated and verified using pkeyutl and DH key support and generation in
287 [Oliver Tappe <zooey@hirschkaefer.de>]
289 *) New make target "install_html_docs" installs HTML renditions of the
291 [Oliver Tappe <zooey@hirschkaefer.de>]
293 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
294 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
295 support key and parameter generation and add initial key generation
296 functionality for RSA.
299 *) Add functions for main EVP_PKEY_method operations. The undocumented
300 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
301 EVP_PKEY_{encrypt,decrypt}_old.
304 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
305 key API, doesn't do much yet.
308 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
309 public key algorithms. New option to openssl utility:
310 "list-public-key-algorithms" to print out info.
313 *) Implement the Supported Elliptic Curves Extension for
314 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
317 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
318 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
321 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
322 utilities such as rsa, dsa, dsaparam etc except they process any key
326 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
327 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
328 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
332 *) Initial support for pluggable public key ASN1.
333 De-spaghettify the public key ASN1 handling. Move public and private
334 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
335 algorithm specific handling to a single module within the relevant
336 algorithm directory. Add functions to allow (near) opaque processing
337 of public and private key structures.
340 *) Implement the Supported Point Formats Extension for
341 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
344 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
345 for the psk identity [hint] and the psk callback functions to the
346 SSL_SESSION, SSL and SSL_CTX structure.
349 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
353 SSL_CTX_use_psk_identity_hint
354 SSL_get_psk_identity_hint
356 SSL_use_psk_identity_hint
358 [Mika Kousa and Pasi Eronen of Nokia Corporation]
360 *) Add RFC 3161 compliant time stamp request creation, response generation
361 and response verification functionality.
362 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
364 *) Add initial support for TLS extensions, specifically for the server_name
365 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
366 have new members for a host name. The SSL data structure has an
367 additional member SSL_CTX *initial_ctx so that new sessions can be
368 stored in that context to allow for session resumption, even after the
369 SSL has been switched to a new SSL_CTX in reaction to a client's
370 server_name extension.
372 New functions (subject to change):
375 SSL_get_servername_type()
378 New CTRL codes and macros (subject to change):
380 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
381 - SSL_CTX_set_tlsext_servername_callback()
382 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
383 - SSL_CTX_set_tlsext_servername_arg()
384 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
386 openssl s_client has a new '-servername ...' option.
388 openssl s_server has new options '-servername_host ...', '-cert2 ...',
389 '-key2 ...', '-servername_fatal' (subject to change). This allows
390 testing the HostName extension for a specific single host name ('-cert'
391 and '-key' remain fallbacks for handshakes without HostName
392 negotiation). If the unrecogninzed_name alert has to be sent, this by
393 default is a warning; it becomes fatal with the '-servername_fatal'
396 [Peter Sylvester, Remy Allais, Christophe Renou]
398 *) Whirlpool hash implementation is added.
401 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
402 bn(64,32). Because of instruction set limitations it doesn't have
403 any negative impact on performance. This was done mostly in order
404 to make it possible to share assembler modules, such as bn_mul_mont
405 implementations, between 32- and 64-bit builds without hassle.
408 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
409 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
413 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
414 dedicated Montgomery multiplication procedure, is introduced.
415 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
416 "64-bit" performance on certain 32-bit targets.
419 *) New option SSL_OP_NO_COMP to disable use of compression selectively
420 in SSL structures. New SSL ctrl to set maximum send fragment size.
421 Save memory by seeting the I/O buffer sizes dynamically instead of
422 using the maximum available value.
425 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
426 in addition to the text details.
429 *) Very, very preliminary EXPERIMENTAL support for printing of general
430 ASN1 structures. This currently produces rather ugly output and doesn't
431 handle several customised structures at all.
434 *) Integrated support for PVK file format and some related formats such
435 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
436 these in the 'rsa' and 'dsa' utilities.
439 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
442 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
443 place for the (very old) "NETSCAPE" format certificates which are now
444 handled using new ASN1 code equivalents.
447 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
448 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
449 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
452 *) Modify CRL distribution points extension code to print out previously
453 unsupported fields. Enhance extension setting code to allow setting of
457 *) Add print and set support for Issuing Distribution Point CRL extension.
460 *) Change 'Configure' script to enable Camellia by default.
463 Changes between 0.9.8d and 0.9.8e [XX xxx XXXX]
465 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
466 a ciphersuite string such as "DEFAULT:RSA" cannot enable
467 authentication-only ciphersuites.
470 *) Since AES128 and AES256 (and similarly Camellia128 and
471 Camellia256) share a single mask bit in the logic of
472 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
473 kludge to work properly if AES128 is available and AES256 isn't
474 (or if Camellia128 is available and Camellia256 isn't).
477 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
478 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
479 When a point or a seed is encoded in a BIT STRING, we need to
480 prevent the removal of trailing zero bits to get the proper DER
481 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
482 of a NamedBitList, for which trailing 0 bits need to be removed.)
485 *) Have SSL/TLS server implementation tolerate "mismatched" record
486 protocol version while receiving ClientHello even if the
487 ClientHello is fragmented. (The server can't insist on the
488 particular protocol version it has chosen before the ServerHello
489 message has informed the client about his choice.)
492 *) Add RFC 3779 support.
493 [Rob Austein for ARIN, Ben Laurie]
495 *) Load error codes if they are not already present instead of using a
496 static variable. This allows them to be cleanly unloaded and reloaded.
497 Improve header file function name parsing.
500 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
502 *) Introduce limits to prevent malicious keys being able to
503 cause a denial of service. (CVE-2006-2940)
504 [Steve Henson, Bodo Moeller]
506 *) Fix ASN.1 parsing of certain invalid structures that can result
507 in a denial of service. (CVE-2006-2937) [Steve Henson]
509 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
510 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
512 *) Fix SSL client code which could crash if connecting to a
513 malicious SSLv2 server. (CVE-2006-4343)
514 [Tavis Ormandy and Will Drewry, Google Security Team]
516 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
517 match only those. Before that, "AES256-SHA" would be interpreted
518 as a pattern and match "AES128-SHA" too (since AES128-SHA got
519 the same strength classification in 0.9.7h) as we currently only
520 have a single AES bit in the ciphersuite description bitmap.
521 That change, however, also applied to ciphersuite strings such as
522 "RC4-MD5" that intentionally matched multiple ciphersuites --
523 namely, SSL 2.0 ciphersuites in addition to the more common ones
524 from SSL 3.0/TLS 1.0.
526 So we change the selection algorithm again: Naming an explicit
527 ciphersuite selects this one ciphersuite, and any other similar
528 ciphersuite (same bitmap) from *other* protocol versions.
529 Thus, "RC4-MD5" again will properly select both the SSL 2.0
530 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
532 Since SSL 2.0 does not have any ciphersuites for which the
533 128/256 bit distinction would be relevant, this works for now.
534 The proper fix will be to use different bits for AES128 and
535 AES256, which would have avoided the problems from the beginning;
536 however, bits are scarce, so we can only do this in a new release
537 (not just a patchlevel) when we can change the SSL_CIPHER
538 definition to split the single 'unsigned long mask' bitmap into
539 multiple values to extend the available space.
543 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
545 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
546 (CVE-2006-4339) [Ben Laurie and Google Security Team]
548 *) Add AES IGE and biIGE modes.
551 *) Change the Unix randomness entropy gathering to use poll() when
552 possible instead of select(), since the latter has some
553 undesirable limitations.
554 [Darryl Miles via Richard Levitte and Bodo Moeller]
556 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
557 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
558 cannot be implicitly activated as part of, e.g., the "AES" alias.
559 However, please upgrade to OpenSSL 0.9.9[-dev] for
560 non-experimental use of the ECC ciphersuites to get TLS extension
561 support, which is required for curve and point format negotiation
562 to avoid potential handshake problems.
565 *) Disable rogue ciphersuites:
567 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
568 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
569 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
571 The latter two were purportedly from
572 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
575 Also deactivate the remaining ciphersuites from
576 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
577 unofficial, and the ID has long expired.
580 *) Fix RSA blinding Heisenbug (problems sometimes occured on
581 dual-core machines) and other potential thread-safety issues.
584 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
585 versions), which is now available for royalty-free use
586 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
587 Also, add Camellia TLS ciphersuites from RFC 4132.
589 To minimize changes between patchlevels in the OpenSSL 0.9.8
590 series, Camellia remains excluded from compilation unless OpenSSL
591 is configured with 'enable-camellia'.
594 *) Disable the padding bug check when compression is in use. The padding
595 bug check assumes the first packet is of even length, this is not
596 necessarily true if compresssion is enabled and can result in false
597 positives causing handshake failure. The actual bug test is ancient
598 code so it is hoped that implementations will either have fixed it by
599 now or any which still have the bug do not support compression.
602 Changes between 0.9.8a and 0.9.8b [04 May 2006]
604 *) When applying a cipher rule check to see if string match is an explicit
605 cipher suite and only match that one cipher suite if it is.
608 *) Link in manifests for VC++ if needed.
609 [Austin Ziegler <halostatue@gmail.com>]
611 *) Update support for ECC-based TLS ciphersuites according to
612 draft-ietf-tls-ecc-12.txt with proposed changes (but without
613 TLS extensions, which are supported starting with the 0.9.9
614 branch, not in the OpenSSL 0.9.8 branch).
617 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
618 opaque EVP_CIPHER_CTX handling.
621 *) Fixes and enhancements to zlib compression code. We now only use
622 "zlib1.dll" and use the default __cdecl calling convention on Win32
623 to conform with the standards mentioned here:
624 http://www.zlib.net/DLL_FAQ.txt
625 Static zlib linking now works on Windows and the new --with-zlib-include
626 --with-zlib-lib options to Configure can be used to supply the location
627 of the headers and library. Gracefully handle case where zlib library
631 *) Several fixes and enhancements to the OID generation code. The old code
632 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
633 handle numbers larger than ULONG_MAX, truncated printing and had a
634 non standard OBJ_obj2txt() behaviour.
637 *) Add support for building of engines under engine/ as shared libraries
638 under VC++ build system.
641 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
642 Hopefully, we will not see any false combination of paths any more.
645 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
647 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
648 (part of SSL_OP_ALL). This option used to disable the
649 countermeasure against man-in-the-middle protocol-version
650 rollback in the SSL 2.0 server implementation, which is a bad
651 idea. (CVE-2005-2969)
653 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
654 for Information Security, National Institute of Advanced Industrial
655 Science and Technology [AIST], Japan)]
657 *) Add two function to clear and return the verify parameter flags.
660 *) Keep cipherlists sorted in the source instead of sorting them at
661 runtime, thus removing the need for a lock.
664 *) Avoid some small subgroup attacks in Diffie-Hellman.
665 [Nick Mathewson and Ben Laurie]
667 *) Add functions for well-known primes.
670 *) Extended Windows CE support.
671 [Satoshi Nakamura and Andy Polyakov]
673 *) Initialize SSL_METHOD structures at compile time instead of during
674 runtime, thus removing the need for a lock.
677 *) Make PKCS7_decrypt() work even if no certificate is supplied by
678 attempting to decrypt each encrypted key in turn. Add support to
682 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
684 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
687 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
690 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
691 key into the same file any more.
694 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
697 *) Add -utf8 command line and config file option to 'ca'.
698 [Stefan <stf@udoma.org]
700 *) Removed the macro des_crypt(), as it seems to conflict with some
701 libraries. Use DES_crypt().
704 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
705 involves renaming the source and generated shared-libs for
706 both. The engines will accept the corrected or legacy ids
707 ('ncipher' and '4758_cca' respectively) when binding. NB,
708 this only applies when building 'shared'.
709 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
711 *) Add attribute functions to EVP_PKEY structure. Modify
712 PKCS12_create() to recognize a CSP name attribute and
713 use it. Make -CSP option work again in pkcs12 utility.
716 *) Add new functionality to the bn blinding code:
717 - automatic re-creation of the BN_BLINDING parameters after
718 a fixed number of uses (currently 32)
719 - add new function for parameter creation
720 - introduce flags to control the update behaviour of the
721 BN_BLINDING parameters
722 - hide BN_BLINDING structure
723 Add a second BN_BLINDING slot to the RSA structure to improve
724 performance when a single RSA object is shared among several
728 *) Add support for DTLS.
729 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
731 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
732 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
735 *) Remove buggy and incompletet DH cert support from
736 ssl/ssl_rsa.c and ssl/s3_both.c
739 *) Use SHA-1 instead of MD5 as the default digest algorithm for
740 the apps/openssl applications.
743 *) Compile clean with "-Wall -Wmissing-prototypes
744 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
745 DEBUG_SAFESTACK must also be set.
748 *) Change ./Configure so that certain algorithms can be disabled by default.
749 The new counterpiece to "no-xxx" is "enable-xxx".
751 The patented RC5 and MDC2 algorithms will now be disabled unless
752 "enable-rc5" and "enable-mdc2", respectively, are specified.
754 (IDEA remains enabled despite being patented. This is because IDEA
755 is frequently required for interoperability, and there is no license
756 fee for non-commercial use. As before, "no-idea" can be used to
757 avoid this algorithm.)
761 *) Add processing of proxy certificates (see RFC 3820). This work was
762 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
763 EGEE (Enabling Grids for E-science in Europe).
766 *) RC4 performance overhaul on modern architectures/implementations, such
767 as Intel P4, IA-64 and AMD64.
770 *) New utility extract-section.pl. This can be used specify an alternative
771 section number in a pod file instead of having to treat each file as
772 a separate case in Makefile. This can be done by adding two lines to the
775 =for comment openssl_section:XXX
777 The blank line is mandatory.
781 *) New arguments -certform, -keyform and -pass for s_client and s_server
782 to allow alternative format key and certificate files and passphrase
786 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
787 update associated structures and add various utility functions.
789 Add new policy related verify parameters, include policy checking in
790 standard verify code. Enhance 'smime' application with extra parameters
791 to support policy checking and print out.
794 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
795 Nehemiah processors. These extensions support AES encryption in hardware
796 as well as RNG (though RNG support is currently disabled).
797 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
799 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
802 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
803 [Andy Polyakov and a number of other people]
805 *) Improved PowerPC platform support. Most notably BIGNUM assembler
806 implementation contributed by IBM.
807 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
809 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
810 exponent rather than 'unsigned long'. There is a corresponding change to
811 the new 'rsa_keygen' element of the RSA_METHOD structure.
812 [Jelte Jansen, Geoff Thorpe]
814 *) Functionality for creating the initial serial number file is now
815 moved from CA.pl to the 'ca' utility with a new option -create_serial.
817 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
818 number file to 1, which is bound to cause problems. To avoid
819 the problems while respecting compatibility between different 0.9.7
820 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
821 CA.pl for serial number initialization. With the new release 0.9.8,
822 we can fix the problem directly in the 'ca' utility.)
825 *) Reduced header interdepencies by declaring more opaque objects in
826 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
827 give fewer recursive includes, which could break lazy source code - so
828 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
829 developers should define this symbol when building and using openssl to
830 ensure they track the recommended behaviour, interfaces, [etc], but
831 backwards-compatible behaviour prevails when this isn't defined.
834 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
837 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
838 This will generate a random key of the appropriate length based on the
839 cipher context. The EVP_CIPHER can provide its own random key generation
840 routine to support keys of a specific form. This is used in the des and
841 3des routines to generate a key of the correct parity. Update S/MIME
842 code to use new functions and hence generate correct parity DES keys.
843 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
844 valid (weak or incorrect parity).
847 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
848 as looking them up. This is useful when the verified structure may contain
849 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
850 present unless the new PKCS7_NO_CRL flag is asserted.
853 *) Extend ASN1 oid configuration module. It now additionally accepts the
856 shortName = some long name, 1.2.3.4
859 *) Reimplemented the BN_CTX implementation. There is now no more static
860 limitation on the number of variables it can handle nor the depth of the
861 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
862 information can now expand as required, and rather than having a single
863 static array of bignums, BN_CTX now uses a linked-list of such arrays
864 allowing it to expand on demand whilst maintaining the usefulness of
868 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
869 to allow all RSA operations to function using a single BN_CTX.
872 *) Preliminary support for certificate policy evaluation and checking. This
873 is initially intended to pass the tests outlined in "Conformance Testing
874 of Relying Party Client Certificate Path Processing Logic" v1.07.
877 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
878 remained unused and not that useful. A variety of other little bignum
879 tweaks and fixes have also been made continuing on from the audit (see
883 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
884 associated ASN1, EVP and SSL functions and old ASN1 macros.
887 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
888 and this should never fail. So the return value from the use of
889 BN_set_word() (which can fail due to needless expansion) is now deprecated;
890 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
893 *) BN_CTX_get() should return zero-valued bignums, providing the same
894 initialised value as BN_new().
895 [Geoff Thorpe, suggested by Ulf Möller]
897 *) Support for inhibitAnyPolicy certificate extension.
900 *) An audit of the BIGNUM code is underway, for which debugging code is
901 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
902 is considered valid when processing BIGNUMs, and causes execution to
903 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
904 further steps are taken to deliberately pollute unused data in BIGNUM
905 structures to try and expose faulty code further on. For now, openssl will
906 (in its default mode of operation) continue to tolerate the inconsistent
907 forms that it has tolerated in the past, but authors and packagers should
908 consider trying openssl and their own applications when compiled with
909 these debugging symbols defined. It will help highlight potential bugs in
910 their own code, and will improve the test coverage for OpenSSL itself. At
911 some point, these tighter rules will become openssl's default to improve
912 maintainability, though the assert()s and other overheads will remain only
913 in debugging configurations. See bn.h for more details.
914 [Geoff Thorpe, Nils Larsch, Ulf Möller]
916 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
917 that can only be obtained through BN_CTX_new() (which implicitly
918 initialises it). The presence of this function only made it possible
919 to overwrite an existing structure (and cause memory leaks).
922 *) Because of the callback-based approach for implementing LHASH as a
923 template type, lh_insert() adds opaque objects to hash-tables and
924 lh_doall() or lh_doall_arg() are typically used with a destructor callback
925 to clean up those corresponding objects before destroying the hash table
926 (and losing the object pointers). So some over-zealous constifications in
927 LHASH have been relaxed so that lh_insert() does not take (nor store) the
928 objects as "const" and the lh_doall[_arg] callback wrappers are not
929 prototyped to have "const" restrictions on the object pointers they are
930 given (and so aren't required to cast them away any more).
933 *) The tmdiff.h API was so ugly and minimal that our own timing utility
934 (speed) prefers to use its own implementation. The two implementations
935 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
936 its object type properly exposed (MS_TM) instead of casting to/from "char
937 *". This may still change yet if someone realises MS_TM and "ms_time_***"
938 aren't necessarily the greatest nomenclatures - but this is what was used
939 internally to the implementation so I've used that for now.
942 *) Ensure that deprecated functions do not get compiled when
943 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
944 the self-tests were still using deprecated key-generation functions so
945 these have been updated also.
948 *) Reorganise PKCS#7 code to separate the digest location functionality
949 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
950 New function PKCS7_set_digest() to set the digest type for PKCS#7
951 digestedData type. Add additional code to correctly generate the
952 digestedData type and add support for this type in PKCS7 initialization
956 *) New function PKCS7_set0_type_other() this initializes a PKCS7
957 structure of type "other".
960 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
961 sure the loop does correctly stop and breaking ("division by zero")
962 modulus operations are not performed. The (pre-generated) prime
963 table crypto/bn/bn_prime.h was already correct, but it could not be
964 re-generated on some platforms because of the "division by zero"
965 situation in the script.
966 [Ralf S. Engelschall]
968 *) Update support for ECC-based TLS ciphersuites according to
969 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
970 SHA-1 now is only used for "small" curves (where the
971 representation of a field element takes up to 24 bytes); for
972 larger curves, the field element resulting from ECDH is directly
973 used as premaster secret.
974 [Douglas Stebila (Sun Microsystems Laboratories)]
976 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
977 curve secp160r1 to the tests.
978 [Douglas Stebila (Sun Microsystems Laboratories)]
980 *) Add the possibility to load symbols globally with DSO.
981 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
983 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
984 control of the error stack.
987 *) Add support for STORE in ENGINE.
990 *) Add the STORE type. The intention is to provide a common interface
991 to certificate and key stores, be they simple file-based stores, or
992 HSM-type store, or LDAP stores, or...
993 NOTE: The code is currently UNTESTED and isn't really used anywhere.
996 *) Add a generic structure called OPENSSL_ITEM. This can be used to
997 pass a list of arguments to any function as well as provide a way
998 for a function to pass data back to the caller.
1001 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
1002 works like BUF_strdup() but can be used to duplicate a portion of
1003 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
1007 *) Add the function sk_find_ex() which works like sk_find(), but will
1008 return an index to an element even if an exact match couldn't be
1009 found. The index is guaranteed to point at the element where the
1010 searched-for key would be inserted to preserve sorting order.
1013 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
1014 takes an extra flags argument for optional functionality. Currently,
1015 the following flags are defined:
1017 OBJ_BSEARCH_VALUE_ON_NOMATCH
1018 This one gets OBJ_bsearch_ex() to return a pointer to the first
1019 element where the comparing function returns a negative or zero
1022 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
1023 This one gets OBJ_bsearch_ex() to return a pointer to the first
1024 element where the comparing function returns zero. This is useful
1025 if there are more than one element where the comparing function
1029 *) Make it possible to create self-signed certificates with 'openssl ca'
1030 in such a way that the self-signed certificate becomes part of the
1031 CA database and uses the same mechanisms for serial number generation
1032 as all other certificate signing. The new flag '-selfsign' enables
1033 this functionality. Adapt CA.sh and CA.pl.in.
1036 *) Add functionality to check the public key of a certificate request
1037 against a given private. This is useful to check that a certificate
1038 request can be signed by that key (self-signing).
1041 *) Make it possible to have multiple active certificates with the same
1042 subject in the CA index file. This is done only if the keyword
1043 'unique_subject' is set to 'no' in the main CA section (default
1044 if 'CA_default') of the configuration file. The value is saved
1045 with the database itself in a separate index attribute file,
1046 named like the index file with '.attr' appended to the name.
1049 *) Generate muti valued AVAs using '+' notation in config files for
1053 *) Support for nameConstraints certificate extension.
1056 *) Support for policyConstraints certificate extension.
1059 *) Support for policyMappings certificate extension.
1062 *) Make sure the default DSA_METHOD implementation only uses its
1063 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
1064 and change its own handlers to be NULL so as to remove unnecessary
1065 indirection. This lets alternative implementations fallback to the
1066 default implementation more easily.
1069 *) Support for directoryName in GeneralName related extensions
1073 *) Make it possible to link applications using Makefile.shared.
1074 Make that possible even when linking against static libraries!
1077 *) Support for single pass processing for S/MIME signing. This now
1078 means that S/MIME signing can be done from a pipe, in addition
1079 cleartext signing (multipart/signed type) is effectively streaming
1080 and the signed data does not need to be all held in memory.
1082 This is done with a new flag PKCS7_STREAM. When this flag is set
1083 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
1084 is done after the data is output (and digests calculated) in
1085 SMIME_write_PKCS7().
1088 *) Add full support for -rpath/-R, both in shared libraries and
1089 applications, at least on the platforms where it's known how
1093 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
1094 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
1095 will now compute a table of multiples of the generator that
1096 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
1097 faster (notably in the case of a single point multiplication,
1098 scalar * generator).
1099 [Nils Larsch, Bodo Moeller]
1101 *) IPv6 support for certificate extensions. The various extensions
1102 which use the IP:a.b.c.d can now take IPv6 addresses using the
1103 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
1107 *) Added an ENGINE that implements RSA by performing private key
1108 exponentiations with the GMP library. The conversions to and from
1109 GMP's mpz_t format aren't optimised nor are any montgomery forms
1110 cached, and on x86 it appears OpenSSL's own performance has caught up.
1111 However there are likely to be other architectures where GMP could
1112 provide a boost. This ENGINE is not built in by default, but it can be
1113 specified at Configure time and should be accompanied by the necessary
1114 linker additions, eg;
1115 ./config -DOPENSSL_USE_GMP -lgmp
1118 *) "openssl engine" will not display ENGINE/DSO load failure errors when
1119 testing availability of engines with "-t" - the old behaviour is
1120 produced by increasing the feature's verbosity with "-tt".
1123 *) ECDSA routines: under certain error conditions uninitialized BN objects
1124 could be freed. Solution: make sure initialization is performed early
1125 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
1129 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
1130 and DH_METHOD (eg. by ENGINE implementations) to override the normal
1131 software implementations. For DSA and DH, parameter generation can
1132 also be overriden by providing the appropriate method callbacks.
1135 *) Change the "progress" mechanism used in key-generation and
1136 primality testing to functions that take a new BN_GENCB pointer in
1137 place of callback/argument pairs. The new API functions have "_ex"
1138 postfixes and the older functions are reimplemented as wrappers for
1139 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
1140 declarations of the old functions to help (graceful) attempts to
1141 migrate to the new functions. Also, the new key-generation API
1142 functions operate on a caller-supplied key-structure and return
1143 success/failure rather than returning a key or NULL - this is to
1144 help make "keygen" another member function of RSA_METHOD etc.
1146 Example for using the new callback interface:
1148 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
1152 BN_GENCB_set(&my_cb, my_callback, my_arg);
1154 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
1155 /* For the meaning of a, b in calls to my_callback(), see the
1156 * documentation of the function that calls the callback.
1157 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
1158 * my_callback should return 1 if it wants BN_is_prime_ex()
1159 * to continue, or 0 to stop.
1164 *) Change the ZLIB compression method to be stateful, and make it
1165 available to TLS with the number defined in
1166 draft-ietf-tls-compression-04.txt.
1169 *) Add the ASN.1 structures and functions for CertificatePair, which
1170 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
1172 CertificatePair ::= SEQUENCE {
1173 forward [0] Certificate OPTIONAL,
1174 reverse [1] Certificate OPTIONAL,
1175 -- at least one of the pair shall be present -- }
1177 Also implement the PEM functions to read and write certificate
1178 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
1180 This needed to be defined, mostly for the sake of the LDAP
1181 attribute crossCertificatePair, but may prove useful elsewhere as
1185 *) Make it possible to inhibit symlinking of shared libraries in
1186 Makefile.shared, for Cygwin's sake.
1189 *) Extend the BIGNUM API by creating a function
1190 void BN_set_negative(BIGNUM *a, int neg);
1191 and a macro that behave like
1192 int BN_is_negative(const BIGNUM *a);
1194 to avoid the need to access 'a->neg' directly in applications.
1197 *) Implement fast modular reduction for pseudo-Mersenne primes
1198 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
1199 EC_GROUP_new_curve_GFp() will now automatically use this
1201 [Nils Larsch <nla@trustcenter.de>]
1203 *) Add new lock type (CRYPTO_LOCK_BN).
1206 *) Change the ENGINE framework to automatically load engines
1207 dynamically from specific directories unless they could be
1208 found to already be built in or loaded. Move all the
1209 current engines except for the cryptodev one to a new
1211 The engines in engines/ are built as shared libraries if
1212 the "shared" options was given to ./Configure or ./config.
1213 Otherwise, they are inserted in libcrypto.a.
1214 /usr/local/ssl/engines is the default directory for dynamic
1215 engines, but that can be overriden at configure time through
1216 the usual use of --prefix and/or --openssldir, and at run
1217 time with the environment variable OPENSSL_ENGINES.
1218 [Geoff Thorpe and Richard Levitte]
1220 *) Add Makefile.shared, a helper makefile to build shared
1221 libraries. Addapt Makefile.org.
1224 *) Add version info to Win32 DLLs.
1225 [Peter 'Luna' Runestig" <peter@runestig.com>]
1227 *) Add new 'medium level' PKCS#12 API. Certificates and keys
1228 can be added using this API to created arbitrary PKCS#12
1229 files while avoiding the low level API.
1231 New options to PKCS12_create(), key or cert can be NULL and
1232 will then be omitted from the output file. The encryption
1233 algorithm NIDs can be set to -1 for no encryption, the mac
1234 iteration count can be set to 0 to omit the mac.
1236 Enhance pkcs12 utility by making the -nokeys and -nocerts
1237 options work when creating a PKCS#12 file. New option -nomac
1238 to omit the mac, NONE can be set for an encryption algorithm.
1239 New code is modified to use the enhanced PKCS12_create()
1240 instead of the low level API.
1243 *) Extend ASN1 encoder to support indefinite length constructed
1244 encoding. This can output sequences tags and octet strings in
1245 this form. Modify pk7_asn1.c to support indefinite length
1246 encoding. This is experimental and needs additional code to
1247 be useful, such as an ASN1 bio and some enhanced streaming
1250 Extend template encode functionality so that tagging is passed
1251 down to the template encoder.
1254 *) Let 'openssl req' fail if an argument to '-newkey' is not
1255 recognized instead of using RSA as a default.
1258 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
1259 As these are not official, they are not included in "ALL";
1260 the "ECCdraft" ciphersuite group alias can be used to select them.
1261 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
1263 *) Add ECDH engine support.
1264 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
1266 *) Add ECDH in new directory crypto/ecdh/.
1267 [Douglas Stebila (Sun Microsystems Laboratories)]
1269 *) Let BN_rand_range() abort with an error after 100 iterations
1270 without success (which indicates a broken PRNG).
1273 *) Change BN_mod_sqrt() so that it verifies that the input value
1274 is really the square of the return value. (Previously,
1275 BN_mod_sqrt would show GIGO behaviour.)
1278 *) Add named elliptic curves over binary fields from X9.62, SECG,
1279 and WAP/WTLS; add OIDs that were still missing.
1281 [Sheueling Chang Shantz and Douglas Stebila
1282 (Sun Microsystems Laboratories)]
1284 *) Extend the EC library for elliptic curves over binary fields
1285 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
1288 EC_GF2m_simple_method
1292 EC_GROUP_new_curve_GF2m
1293 EC_GROUP_set_curve_GF2m
1294 EC_GROUP_get_curve_GF2m
1295 EC_POINT_set_affine_coordinates_GF2m
1296 EC_POINT_get_affine_coordinates_GF2m
1297 EC_POINT_set_compressed_coordinates_GF2m
1299 Point compression for binary fields is disabled by default for
1300 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
1303 As binary polynomials are represented as BIGNUMs, various members
1304 of the EC_GROUP and EC_POINT data structures can be shared
1305 between the implementations for prime fields and binary fields;
1306 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
1307 are essentially identical to their ..._GFp counterparts.
1308 (For simplicity, the '..._GFp' prefix has been dropped from
1309 various internal method names.)
1311 An internal 'field_div' method (similar to 'field_mul' and
1312 'field_sqr') has been added; this is used only for binary fields.
1314 [Sheueling Chang Shantz and Douglas Stebila
1315 (Sun Microsystems Laboratories)]
1317 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
1318 through methods ('mul', 'precompute_mult').
1320 The generic implementations (now internally called 'ec_wNAF_mul'
1321 and 'ec_wNAF_precomputed_mult') remain the default if these
1322 methods are undefined.
1324 [Sheueling Chang Shantz and Douglas Stebila
1325 (Sun Microsystems Laboratories)]
1327 *) New function EC_GROUP_get_degree, which is defined through
1328 EC_METHOD. For curves over prime fields, this returns the bit
1329 length of the modulus.
1331 [Sheueling Chang Shantz and Douglas Stebila
1332 (Sun Microsystems Laboratories)]
1334 *) New functions EC_GROUP_dup, EC_POINT_dup.
1335 (These simply call ..._new and ..._copy).
1337 [Sheueling Chang Shantz and Douglas Stebila
1338 (Sun Microsystems Laboratories)]
1340 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
1341 Polynomials are represented as BIGNUMs (where the sign bit is not
1342 used) in the following functions [macros]:
1345 BN_GF2m_sub [= BN_GF2m_add]
1346 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
1347 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
1348 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
1350 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
1351 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
1352 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
1353 BN_GF2m_cmp [= BN_ucmp]
1355 (Note that only the 'mod' functions are actually for fields GF(2^m).
1356 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
1358 For some functions, an the irreducible polynomial defining a
1359 field can be given as an 'unsigned int[]' with strictly
1360 decreasing elements giving the indices of those bits that are set;
1361 i.e., p[] represents the polynomial
1362 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
1364 p[0] > p[1] > ... > p[k] = 0.
1365 This applies to the following functions:
1370 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
1371 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
1373 BN_GF2m_mod_sqrt_arr
1374 BN_GF2m_mod_solve_quad_arr
1378 Conversion can be performed by the following functions:
1383 bntest.c has additional tests for binary polynomial arithmetic.
1385 Two implementations for BN_GF2m_mod_div() are available.
1386 The default algorithm simply uses BN_GF2m_mod_inv() and
1387 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
1388 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
1389 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
1391 [Sheueling Chang Shantz and Douglas Stebila
1392 (Sun Microsystems Laboratories)]
1394 *) Add new error code 'ERR_R_DISABLED' that can be used when some
1395 functionality is disabled at compile-time.
1396 [Douglas Stebila <douglas.stebila@sun.com>]
1398 *) Change default behaviour of 'openssl asn1parse' so that more
1399 information is visible when viewing, e.g., a certificate:
1401 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
1402 mode the content of non-printable OCTET STRINGs is output in a
1403 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
1404 avoid the appearance of a printable string.
1405 [Nils Larsch <nla@trustcenter.de>]
1407 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
1409 EC_GROUP_set_asn1_flag()
1410 EC_GROUP_get_asn1_flag()
1411 EC_GROUP_set_point_conversion_form()
1412 EC_GROUP_get_point_conversion_form()
1413 These control ASN1 encoding details:
1414 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
1415 has been set to OPENSSL_EC_NAMED_CURVE.
1416 - Points are encoded in uncompressed form by default; options for
1417 asn1_for are as for point2oct, namely
1418 POINT_CONVERSION_COMPRESSED
1419 POINT_CONVERSION_UNCOMPRESSED
1420 POINT_CONVERSION_HYBRID
1422 Also add 'seed' and 'seed_len' members to EC_GROUP with access
1425 EC_GROUP_get0_seed()
1426 EC_GROUP_get_seed_len()
1427 This is used only for ASN1 purposes (so far).
1428 [Nils Larsch <nla@trustcenter.de>]
1430 *) Add 'field_type' member to EC_METHOD, which holds the NID
1431 of the appropriate field type OID. The new function
1432 EC_METHOD_get_field_type() returns this value.
1433 [Nils Larsch <nla@trustcenter.de>]
1438 EC_POINT_point2hex()
1439 EC_POINT_hex2point()
1440 providing useful interfaces to EC_POINT_point2oct() and
1441 EC_POINT_oct2point().
1442 [Nils Larsch <nla@trustcenter.de>]
1444 *) Change internals of the EC library so that the functions
1445 EC_GROUP_set_generator()
1446 EC_GROUP_get_generator()
1447 EC_GROUP_get_order()
1448 EC_GROUP_get_cofactor()
1449 are implemented directly in crypto/ec/ec_lib.c and not dispatched
1450 to methods, which would lead to unnecessary code duplication when
1451 adding different types of curves.
1452 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
1454 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
1455 arithmetic, and such that modified wNAFs are generated
1456 (which avoid length expansion in many cases).
1459 *) Add a function EC_GROUP_check_discriminant() (defined via
1460 EC_METHOD) that verifies that the curve discriminant is non-zero.
1462 Add a function EC_GROUP_check() that makes some sanity tests
1463 on a EC_GROUP, its generator and order. This includes
1464 EC_GROUP_check_discriminant().
1465 [Nils Larsch <nla@trustcenter.de>]
1467 *) Add ECDSA in new directory crypto/ecdsa/.
1469 Add applications 'openssl ecparam' and 'openssl ecdsa'
1470 (these are based on 'openssl dsaparam' and 'openssl dsa').
1472 ECDSA support is also included in various other files across the
1473 library. Most notably,
1474 - 'openssl req' now has a '-newkey ecdsa:file' option;
1475 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
1476 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
1477 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
1478 them suitable for ECDSA where domain parameters must be
1479 extracted before the specific public key;
1480 - ECDSA engine support has been added.
1481 [Nils Larsch <nla@trustcenter.de>]
1483 *) Include some named elliptic curves, and add OIDs from X9.62,
1484 SECG, and WAP/WTLS. Each curve can be obtained from the new
1486 EC_GROUP_new_by_curve_name(),
1487 and the list of available named curves can be obtained with
1488 EC_get_builtin_curves().
1489 Also add a 'curve_name' member to EC_GROUP objects, which can be
1491 EC_GROUP_set_curve_name()
1492 EC_GROUP_get_curve_name()
1493 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
1495 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
1496 was actually never needed) and in BN_mul(). The removal in BN_mul()
1497 required a small change in bn_mul_part_recursive() and the addition
1498 of the functions bn_cmp_part_words(), bn_sub_part_words() and
1499 bn_add_part_words(), which do the same thing as bn_cmp_words(),
1500 bn_sub_words() and bn_add_words() except they take arrays with
1504 Changes between 0.9.7l and 0.9.7m [xx XXX xxxx]
1506 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
1507 a ciphersuite string such as "DEFAULT:RSA" cannot enable
1508 authentication-only ciphersuites.
1511 *) Since AES128 and AES256 share a single mask bit in the logic of
1512 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
1513 kludge to work properly if AES128 is available and AES256 isn't.
1516 *) Have SSL/TLS server implementation tolerate "mismatched" record
1517 protocol version while receiving ClientHello even if the
1518 ClientHello is fragmented. (The server can't insist on the
1519 particular protocol version it has chosen before the ServerHello
1520 message has informed the client about his choice.)
1523 *) Load error codes if they are not already present instead of using a
1524 static variable. This allows them to be cleanly unloaded and reloaded.
1527 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
1529 *) Introduce limits to prevent malicious keys being able to
1530 cause a denial of service. (CVE-2006-2940)
1531 [Steve Henson, Bodo Moeller]
1533 *) Fix ASN.1 parsing of certain invalid structures that can result
1534 in a denial of service. (CVE-2006-2937) [Steve Henson]
1536 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
1537 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
1539 *) Fix SSL client code which could crash if connecting to a
1540 malicious SSLv2 server. (CVE-2006-4343)
1541 [Tavis Ormandy and Will Drewry, Google Security Team]
1543 *) Change ciphersuite string processing so that an explicit
1544 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
1545 will no longer include "AES128-SHA"), and any other similar
1546 ciphersuite (same bitmap) from *other* protocol versions (so that
1547 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
1548 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
1549 changes from 0.9.8b and 0.9.8d.
1552 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
1554 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
1555 (CVE-2006-4339) [Ben Laurie and Google Security Team]
1557 *) Change the Unix randomness entropy gathering to use poll() when
1558 possible instead of select(), since the latter has some
1559 undesirable limitations.
1560 [Darryl Miles via Richard Levitte and Bodo Moeller]
1562 *) Disable rogue ciphersuites:
1564 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
1565 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
1566 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
1568 The latter two were purportedly from
1569 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
1572 Also deactive the remaining ciphersuites from
1573 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
1574 unofficial, and the ID has long expired.
1577 *) Fix RSA blinding Heisenbug (problems sometimes occured on
1578 dual-core machines) and other potential thread-safety issues.
1581 Changes between 0.9.7i and 0.9.7j [04 May 2006]
1583 *) Adapt fipsld and the build system to link against the validated FIPS
1584 module in FIPS mode.
1587 *) Fixes for VC++ 2005 build under Windows.
1590 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
1591 from a Windows bash shell such as MSYS. It is autodetected from the
1592 "config" script when run from a VC++ environment. Modify standard VC++
1593 build to use fipscanister.o from the GNU make build.
1596 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
1598 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
1599 The value now differs depending on if you build for FIPS or not.
1600 BEWARE! A program linked with a shared FIPSed libcrypto can't be
1601 safely run with a non-FIPSed libcrypto, as it may crash because of
1602 the difference induced by this change.
1605 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
1607 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
1608 (part of SSL_OP_ALL). This option used to disable the
1609 countermeasure against man-in-the-middle protocol-version
1610 rollback in the SSL 2.0 server implementation, which is a bad
1611 idea. (CVE-2005-2969)
1613 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
1614 for Information Security, National Institute of Advanced Industrial
1615 Science and Technology [AIST], Japan)]
1617 *) Minimal support for X9.31 signatures and PSS padding modes. This is
1618 mainly for FIPS compliance and not fully integrated at this stage.
1621 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
1622 the exponentiation using a fixed-length exponent. (Otherwise,
1623 the information leaked through timing could expose the secret key
1624 after many signatures; cf. Bleichenbacher's attack on DSA with
1628 *) Make a new fixed-window mod_exp implementation the default for
1629 RSA, DSA, and DH private-key operations so that the sequence of
1630 squares and multiplies and the memory access pattern are
1631 independent of the particular secret key. This will mitigate
1632 cache-timing and potential related attacks.
1634 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
1635 and this is automatically used by BN_mod_exp_mont() if the new flag
1636 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
1637 will use this BN flag for private exponents unless the flag
1638 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
1639 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
1641 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
1643 *) Change the client implementation for SSLv23_method() and
1644 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
1645 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
1646 (Previously, the SSL 2.0 backwards compatible Client Hello
1647 message format would be used even with SSL_OP_NO_SSLv2.)
1650 *) Add support for smime-type MIME parameter in S/MIME messages which some
1654 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
1655 a threadsafe manner. Modify rsa code to use new function and add calls
1656 to dsa and dh code (which had race conditions before).
1659 *) Include the fixed error library code in the C error file definitions
1660 instead of fixing them up at runtime. This keeps the error code
1661 structures constant.
1664 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
1666 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
1669 *) Fixes for newer kerberos headers. NB: the casts are needed because
1670 the 'length' field is signed on one version and unsigned on another
1671 with no (?) obvious way to tell the difference, without these VC++
1672 complains. Also the "definition" of FAR (blank) is no longer included
1673 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
1674 some needed definitions.
1677 *) Undo Cygwin change.
1680 *) Added support for proxy certificates according to RFC 3820.
1681 Because they may be a security thread to unaware applications,
1682 they must be explicitely allowed in run-time. See
1683 docs/HOWTO/proxy_certificates.txt for further information.
1686 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
1688 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
1689 server and client random values. Previously
1690 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
1691 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
1693 This change has negligible security impact because:
1695 1. Server and client random values still have 24 bytes of pseudo random
1698 2. Server and client random values are sent in the clear in the initial
1701 3. The master secret is derived using the premaster secret (48 bytes in
1702 size for static RSA ciphersuites) as well as client server and random
1705 The OpenSSL team would like to thank the UK NISCC for bringing this issue
1708 [Stephen Henson, reported by UK NISCC]
1710 *) Use Windows randomness collection on Cygwin.
1713 *) Fix hang in EGD/PRNGD query when communication socket is closed
1714 prematurely by EGD/PRNGD.
1715 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
1717 *) Prompt for pass phrases when appropriate for PKCS12 input format.
1720 *) Back-port of selected performance improvements from development
1721 branch, as well as improved support for PowerPC platforms.
1724 *) Add lots of checks for memory allocation failure, error codes to indicate
1725 failure and freeing up memory if a failure occurs.
1726 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
1728 *) Add new -passin argument to dgst.
1731 *) Perform some character comparisons of different types in X509_NAME_cmp:
1732 this is needed for some certificates that reencode DNs into UTF8Strings
1733 (in violation of RFC3280) and can't or wont issue name rollover
1737 *) Make an explicit check during certificate validation to see that
1738 the CA setting in each certificate on the chain is correct. As a
1739 side effect always do the following basic checks on extensions,
1740 not just when there's an associated purpose to the check:
1742 - if there is an unhandled critical extension (unless the user
1743 has chosen to ignore this fault)
1744 - if the path length has been exceeded (if one is set at all)
1745 - that certain extensions fit the associated purpose (if one has
1749 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
1751 *) Avoid a race condition when CRLs are checked in a multi threaded
1752 environment. This would happen due to the reordering of the revoked
1753 entries during signature checking and serial number lookup. Now the
1754 encoding is cached and the serial number sort performed under a lock.
1755 Add new STACK function sk_is_sorted().
1758 *) Add Delta CRL to the extension code.
1761 *) Various fixes to s3_pkt.c so alerts are sent properly.
1762 [David Holmes <d.holmes@f5.com>]
1764 *) Reduce the chances of duplicate issuer name and serial numbers (in
1765 violation of RFC3280) using the OpenSSL certificate creation utilities.
1766 This is done by creating a random 64 bit value for the initial serial
1767 number when a serial number file is created or when a self signed
1768 certificate is created using 'openssl req -x509'. The initial serial
1769 number file is created using 'openssl x509 -next_serial' in CA.pl
1770 rather than being initialized to 1.
1773 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
1775 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
1776 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
1777 [Joe Orton, Steve Henson]
1779 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
1781 [Joe Orton, Steve Henson]
1783 *) Make it possible to have multiple active certificates with the same
1784 subject in the CA index file. This is done only if the keyword
1785 'unique_subject' is set to 'no' in the main CA section (default
1786 if 'CA_default') of the configuration file. The value is saved
1787 with the database itself in a separate index attribute file,
1788 named like the index file with '.attr' appended to the name.
1791 *) X509 verify fixes. Disable broken certificate workarounds when
1792 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
1793 keyUsage extension present. Don't accept CRLs with unhandled critical
1794 extensions: since verify currently doesn't process CRL extensions this
1795 rejects a CRL with *any* critical extensions. Add new verify error codes
1799 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
1800 A clarification of RFC2560 will require the use of OCTET STRINGs and
1801 some implementations cannot handle the current raw format. Since OpenSSL
1802 copies and compares OCSP nonces as opaque blobs without any attempt at
1803 parsing them this should not create any compatibility issues.
1806 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
1807 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
1808 this HMAC (and other) operations are several times slower than OpenSSL
1812 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
1813 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
1815 *) Use the correct content when signing type "other".
1818 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
1820 *) Fix various bugs revealed by running the NISCC test suite:
1822 Stop out of bounds reads in the ASN1 code when presented with
1823 invalid tags (CVE-2003-0543 and CVE-2003-0544).
1825 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
1827 If verify callback ignores invalid public key errors don't try to check
1828 certificate signature with the NULL public key.
1832 *) New -ignore_err option in ocsp application to stop the server
1833 exiting on the first error in a request.
1836 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
1837 if the server requested one: as stated in TLS 1.0 and SSL 3.0
1841 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
1842 extra data after the compression methods not only for TLS 1.0
1843 but also for SSL 3.0 (as required by the specification).
1844 [Bodo Moeller; problem pointed out by Matthias Loepfe]
1846 *) Change X509_certificate_type() to mark the key as exported/exportable
1847 when it's 512 *bits* long, not 512 bytes.
1850 *) Change AES_cbc_encrypt() so it outputs exact multiple of
1851 blocks during encryption.
1854 *) Various fixes to base64 BIO and non blocking I/O. On write
1855 flushes were not handled properly if the BIO retried. On read
1856 data was not being buffered properly and had various logic bugs.
1857 This also affects blocking I/O when the data being decoded is a
1861 *) Various S/MIME bugfixes and compatibility changes:
1862 output correct application/pkcs7 MIME type if
1863 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
1864 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
1865 of files as .eml work). Correctly handle very long lines in MIME
1869 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
1871 *) Countermeasure against the Klima-Pokorny-Rosa extension of
1872 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
1873 a protocol version number mismatch like a decryption error
1874 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
1877 *) Turn on RSA blinding by default in the default implementation
1878 to avoid a timing attack. Applications that don't want it can call
1879 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
1880 They would be ill-advised to do so in most cases.
1881 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
1883 *) Change RSA blinding code so that it works when the PRNG is not
1884 seeded (in this case, the secret RSA exponent is abused as
1885 an unpredictable seed -- if it is not unpredictable, there
1886 is no point in blinding anyway). Make RSA blinding thread-safe
1887 by remembering the creator's thread ID in rsa->blinding and
1888 having all other threads use local one-time blinding factors
1889 (this requires more computation than sharing rsa->blinding, but
1890 avoids excessive locking; and if an RSA object is not shared
1891 between threads, blinding will still be very fast).
1894 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
1895 ENGINE as defaults for all supported algorithms irrespective of
1896 the 'flags' parameter. 'flags' is now honoured, so applications
1897 should make sure they are passing it correctly.
1900 *) Target "mingw" now allows native Windows code to be generated in
1901 the Cygwin environment as well as with the MinGW compiler.
1904 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
1906 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
1907 via timing by performing a MAC computation even if incorrrect
1908 block cipher padding has been found. This is a countermeasure
1909 against active attacks where the attacker has to distinguish
1910 between bad padding and a MAC verification error. (CVE-2003-0078)
1912 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
1913 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
1914 Martin Vuagnoux (EPFL, Ilion)]
1916 *) Make the no-err option work as intended. The intention with no-err
1917 is not to have the whole error stack handling routines removed from
1918 libcrypto, it's only intended to remove all the function name and
1919 reason texts, thereby removing some of the footprint that may not
1920 be interesting if those errors aren't displayed anyway.
1922 NOTE: it's still possible for any application or module to have it's
1923 own set of error texts inserted. The routines are there, just not
1924 used by default when no-err is given.
1927 *) Add support for FreeBSD on IA64.
1928 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
1930 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
1931 Kerberos function mit_des_cbc_cksum(). Before this change,
1932 the value returned by DES_cbc_cksum() was like the one from
1933 mit_des_cbc_cksum(), except the bytes were swapped.
1934 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
1936 *) Allow an application to disable the automatic SSL chain building.
1937 Before this a rather primitive chain build was always performed in
1938 ssl3_output_cert_chain(): an application had no way to send the
1939 correct chain if the automatic operation produced an incorrect result.
1941 Now the chain builder is disabled if either:
1943 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
1945 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
1947 The reasoning behind this is that an application would not want the
1948 auto chain building to take place if extra chain certificates are
1949 present and it might also want a means of sending no additional
1950 certificates (for example the chain has two certificates and the
1954 *) Add the possibility to build without the ENGINE framework.
1955 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
1957 *) Under Win32 gmtime() can return NULL: check return value in
1958 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
1961 *) DSA routines: under certain error conditions uninitialized BN objects
1962 could be freed. Solution: make sure initialization is performed early
1963 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
1964 Nils Larsch <nla@trustcenter.de> via PR#459)
1967 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
1968 checked on reconnect on the client side, therefore session resumption
1969 could still fail with a "ssl session id is different" error. This
1970 behaviour is masked when SSL_OP_ALL is used due to
1971 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
1972 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
1973 followup to PR #377.
1976 *) IA-32 assembler support enhancements: unified ELF targets, support
1977 for SCO/Caldera platforms, fix for Cygwin shared build.
1980 *) Add support for FreeBSD on sparc64. As a consequence, support for
1981 FreeBSD on non-x86 processors is separate from x86 processors on
1982 the config script, much like the NetBSD support.
1983 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
1985 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
1987 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
1990 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
1991 code (06) was taken as the first octet of the session ID and the last
1992 octet was ignored consequently. As a result SSLv2 client side session
1993 caching could not have worked due to the session ID mismatch between
1995 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
1999 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
2000 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
2004 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
2005 seems that in spite of existing for more than a year, many application
2006 author have done nothing to provide the necessary callbacks, which
2007 means that this particular engine will not work properly anywhere.
2008 This is a very unfortunate situation which forces us, in the name
2009 of usability, to give the hw_ncipher.c a static lock, which is part
2011 NOTE: This is for the 0.9.7 series ONLY. This hack will never
2012 appear in 0.9.8 or later. We EXPECT application authors to have
2013 dealt properly with this when 0.9.8 is released (unless we actually
2014 make such changes in the libcrypto locking code that changes will
2015 have to be made anyway).
2018 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
2019 octets have been read, EOF or an error occurs. Without this change
2020 some truncated ASN1 structures will not produce an error.
2023 *) Disable Heimdal support, since it hasn't been fully implemented.
2024 Still give the possibility to force the use of Heimdal, but with
2025 warnings and a request that patches get sent to openssl-dev.
2028 *) Add the VC-CE target, introduce the WINCE sysname, and add
2029 INSTALL.WCE and appropriate conditionals to make it build.
2030 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
2032 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
2033 cygssl-x.y.z.dll, where x, y and z are the major, minor and
2034 edit numbers of the version.
2035 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
2037 *) Introduce safe string copy and catenation functions
2038 (BUF_strlcpy() and BUF_strlcat()).
2039 [Ben Laurie (CHATS) and Richard Levitte]
2041 *) Avoid using fixed-size buffers for one-line DNs.
2042 [Ben Laurie (CHATS)]
2044 *) Add BUF_MEM_grow_clean() to avoid information leakage when
2045 resizing buffers containing secrets, and use where appropriate.
2046 [Ben Laurie (CHATS)]
2048 *) Avoid using fixed size buffers for configuration file location.
2049 [Ben Laurie (CHATS)]
2051 *) Avoid filename truncation for various CA files.
2052 [Ben Laurie (CHATS)]
2054 *) Use sizeof in preference to magic numbers.
2055 [Ben Laurie (CHATS)]
2057 *) Avoid filename truncation in cert requests.
2058 [Ben Laurie (CHATS)]
2060 *) Add assertions to check for (supposedly impossible) buffer
2062 [Ben Laurie (CHATS)]
2064 *) Don't cache truncated DNS entries in the local cache (this could
2065 potentially lead to a spoofing attack).
2066 [Ben Laurie (CHATS)]
2068 *) Fix various buffers to be large enough for hex/decimal
2069 representations in a platform independent manner.
2070 [Ben Laurie (CHATS)]
2072 *) Add CRYPTO_realloc_clean() to avoid information leakage when
2073 resizing buffers containing secrets, and use where appropriate.
2074 [Ben Laurie (CHATS)]
2076 *) Add BIO_indent() to avoid much slightly worrying code to do
2078 [Ben Laurie (CHATS)]
2080 *) Convert sprintf()/BIO_puts() to BIO_printf().
2081 [Ben Laurie (CHATS)]
2083 *) buffer_gets() could terminate with the buffer only half
2085 [Ben Laurie (CHATS)]
2087 *) Add assertions to prevent user-supplied crypto functions from
2088 overflowing internal buffers by having large block sizes, etc.
2089 [Ben Laurie (CHATS)]
2091 *) New OPENSSL_assert() macro (similar to assert(), but enabled
2093 [Ben Laurie (CHATS)]
2095 *) Eliminate unused copy of key in RC4.
2096 [Ben Laurie (CHATS)]
2098 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
2099 [Ben Laurie (CHATS)]
2101 *) Fix off-by-one error in EGD path.
2102 [Ben Laurie (CHATS)]
2104 *) If RANDFILE path is too long, ignore instead of truncating.
2105 [Ben Laurie (CHATS)]
2107 *) Eliminate unused and incorrectly sized X.509 structure
2109 [Ben Laurie (CHATS)]
2111 *) Eliminate unused and dangerous function knumber().
2112 [Ben Laurie (CHATS)]
2114 *) Eliminate unused and dangerous structure, KSSL_ERR.
2115 [Ben Laurie (CHATS)]
2117 *) Protect against overlong session ID context length in an encoded
2118 session object. Since these are local, this does not appear to be
2120 [Ben Laurie (CHATS)]
2122 *) Change from security patch (see 0.9.6e below) that did not affect
2123 the 0.9.6 release series:
2125 Remote buffer overflow in SSL3 protocol - an attacker could
2126 supply an oversized master key in Kerberos-enabled versions.
2128 [Ben Laurie (CHATS)]
2130 *) Change the SSL kerb5 codes to match RFC 2712.
2133 *) Make -nameopt work fully for req and add -reqopt switch.
2134 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
2136 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
2137 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
2139 *) Make sure tests can be performed even if the corresponding algorithms
2140 have been removed entirely. This was also the last step to make
2141 OpenSSL compilable with DJGPP under all reasonable conditions.
2142 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
2144 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
2145 to allow version independent disabling of normally unselected ciphers,
2146 which may be activated as a side-effect of selecting a single cipher.
2148 (E.g., cipher list string "RSA" enables ciphersuites that are left
2149 out of "ALL" because they do not provide symmetric encryption.
2150 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
2151 [Lutz Jaenicke, Bodo Moeller]
2153 *) Add appropriate support for separate platform-dependent build
2154 directories. The recommended way to make a platform-dependent
2155 build directory is the following (tested on Linux), maybe with
2158 # Place yourself outside of the OpenSSL source tree. In
2159 # this example, the environment variable OPENSSL_SOURCE
2160 # is assumed to contain the absolute OpenSSL source directory.
2161 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
2162 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
2163 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
2164 mkdir -p `dirname $F`
2165 ln -s $OPENSSL_SOURCE/$F $F
2168 To be absolutely sure not to disturb the source tree, a "make clean"
2169 is a good thing. If it isn't successfull, don't worry about it,
2170 it probably means the source directory is very clean.
2173 *) Make sure any ENGINE control commands make local copies of string
2174 pointers passed to them whenever necessary. Otherwise it is possible
2175 the caller may have overwritten (or deallocated) the original string
2176 data when a later ENGINE operation tries to use the stored values.
2177 [Götz Babin-Ebell <babinebell@trustcenter.de>]
2179 *) Improve diagnostics in file reading and command-line digests.
2180 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
2182 *) Add AES modes CFB and OFB to the object database. Correct an
2183 error in AES-CFB decryption.
2186 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
2187 allows existing EVP_CIPHER_CTX structures to be reused after
2188 calling EVP_*Final(). This behaviour is used by encryption
2189 BIOs and some applications. This has the side effect that
2190 applications must explicitly clean up cipher contexts with
2191 EVP_CIPHER_CTX_cleanup() or they will leak memory.
2194 *) Check the values of dna and dnb in bn_mul_recursive before calling
2195 bn_mul_comba (a non zero value means the a or b arrays do not contain
2196 n2 elements) and fallback to bn_mul_normal if either is not zero.
2199 *) Fix escaping of non-ASCII characters when using the -subj option
2200 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
2203 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
2204 form for "surname", serialNumber has no short form.
2205 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
2206 therefore remove "mail" short name for "internet 7".
2207 The OID for unique identifiers in X509 certificates is
2208 x500UniqueIdentifier, not uniqueIdentifier.
2209 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
2212 *) Add an "init" command to the ENGINE config module and auto initialize
2213 ENGINEs. Without any "init" command the ENGINE will be initialized
2214 after all ctrl commands have been executed on it. If init=1 the
2215 ENGINE is initailized at that point (ctrls before that point are run
2216 on the uninitialized ENGINE and after on the initialized one). If
2217 init=0 then the ENGINE will not be iniatialized at all.
2220 *) Fix the 'app_verify_callback' interface so that the user-defined
2221 argument is actually passed to the callback: In the
2222 SSL_CTX_set_cert_verify_callback() prototype, the callback
2223 declaration has been changed from
2226 int (*cb)(X509_STORE_CTX *,void *);
2227 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
2228 i=s->ctx->app_verify_callback(&ctx)
2229 has been changed into
2230 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
2232 To update applications using SSL_CTX_set_cert_verify_callback(),
2233 a dummy argument can be added to their callback functions.
2234 [D. K. Smetters <smetters@parc.xerox.com>]
2236 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
2237 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
2239 *) Add and OPENSSL_LOAD_CONF define which will cause
2240 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
2241 This allows older applications to transparently support certain
2242 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
2243 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
2244 load the config file and OPENSSL_add_all_algorithms_conf() which will
2245 always load it have also been added.
2248 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
2249 Adjust NIDs and EVP layer.
2250 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
2252 *) Config modules support in openssl utility.
2254 Most commands now load modules from the config file,
2255 though in a few (such as version) this isn't done
2256 because it couldn't be used for anything.
2258 In the case of ca and req the config file used is
2259 the same as the utility itself: that is the -config
2260 command line option can be used to specify an
2264 *) Move default behaviour from OPENSSL_config(). If appname is NULL
2265 use "openssl_conf" if filename is NULL use default openssl config file.
2268 *) Add an argument to OPENSSL_config() to allow the use of an alternative
2269 config section name. Add a new flag to tolerate a missing config file
2270 and move code to CONF_modules_load_file().
2273 *) Support for crypto accelerator cards from Accelerated Encryption
2274 Processing, www.aep.ie. (Use engine 'aep')
2275 The support was copied from 0.9.6c [engine] and adapted/corrected
2276 to work with the new engine framework.
2277 [AEP Inc. and Richard Levitte]
2279 *) Support for SureWare crypto accelerator cards from Baltimore
2280 Technologies. (Use engine 'sureware')
2281 The support was copied from 0.9.6c [engine] and adapted
2282 to work with the new engine framework.
2285 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
2286 make the newer ENGINE framework commands for the CHIL engine work.
2287 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
2289 *) Make it possible to produce shared libraries on ReliantUNIX.
2290 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
2292 *) Add the configuration target debug-linux-ppro.
2293 Make 'openssl rsa' use the general key loading routines
2294 implemented in apps.c, and make those routines able to
2295 handle the key format FORMAT_NETSCAPE and the variant
2297 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
2299 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
2300 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
2302 *) Add -keyform to rsautl, and document -engine.
2303 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
2305 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
2306 BIO_R_NO_SUCH_FILE error code rather than the generic
2307 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
2310 *) Add new functions
2312 ERR_peek_last_error_line
2313 ERR_peek_last_error_line_data.
2314 These are similar to
2317 ERR_peek_error_line_data,
2318 but report on the latest error recorded rather than the first one
2319 still in the error queue.
2320 [Ben Laurie, Bodo Moeller]
2322 *) default_algorithms option in ENGINE config module. This allows things
2324 default_algorithms = ALL
2325 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
2328 *) Prelminary ENGINE config module.
2331 *) New experimental application configuration code.
2334 *) Change the AES code to follow the same name structure as all other
2335 symmetric ciphers, and behave the same way. Move everything to
2336 the directory crypto/aes, thereby obsoleting crypto/rijndael.
2337 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
2339 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
2340 [Ben Laurie and Theo de Raadt]
2342 *) Add option to output public keys in req command.
2343 [Massimiliano Pala madwolf@openca.org]
2345 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
2346 (up to about 10% better than before for P-192 and P-224).
2349 *) New functions/macros
2351 SSL_CTX_set_msg_callback(ctx, cb)
2352 SSL_CTX_set_msg_callback_arg(ctx, arg)
2353 SSL_set_msg_callback(ssl, cb)
2354 SSL_set_msg_callback_arg(ssl, arg)
2356 to request calling a callback function
2358 void cb(int write_p, int version, int content_type,
2359 const void *buf, size_t len, SSL *ssl, void *arg)
2361 whenever a protocol message has been completely received
2362 (write_p == 0) or sent (write_p == 1). Here 'version' is the
2363 protocol version according to which the SSL library interprets
2364 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
2365 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
2366 the content type as defined in the SSL 3.0/TLS 1.0 protocol
2367 specification (change_cipher_spec(20), alert(21), handshake(22)).
2368 'buf' and 'len' point to the actual message, 'ssl' to the
2369 SSL object, and 'arg' is the application-defined value set by
2370 SSL[_CTX]_set_msg_callback_arg().
2372 'openssl s_client' and 'openssl s_server' have new '-msg' options
2373 to enable a callback that displays all protocol messages.
2376 *) Change the shared library support so shared libraries are built as
2377 soon as the corresponding static library is finished, and thereby get
2378 openssl and the test programs linked against the shared library.
2379 This still only happens when the keyword "shard" has been given to
2380 the configuration scripts.
2382 NOTE: shared library support is still an experimental thing, and
2383 backward binary compatibility is still not guaranteed.
2384 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
2386 *) Add support for Subject Information Access extension.
2387 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
2389 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
2390 additional bytes when new memory had to be allocated, not just
2391 when reusing an existing buffer.
2394 *) New command line and configuration option 'utf8' for the req command.
2395 This allows field values to be specified as UTF8 strings.
2398 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
2399 runs for the former and machine-readable output for the latter.
2402 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
2403 of the e-mail address in the DN (i.e., it will go into a certificate
2404 extension only). The new configuration file option 'email_in_dn = no'
2405 has the same effect.
2406 [Massimiliano Pala madwolf@openca.org]
2408 *) Change all functions with names starting with des_ to be starting
2409 with DES_ instead. Add wrappers that are compatible with libdes,
2410 but are named _ossl_old_des_*. Finally, add macros that map the
2411 des_* symbols to the corresponding _ossl_old_des_* if libdes
2412 compatibility is desired. If OpenSSL 0.9.6c compatibility is
2413 desired, the des_* symbols will be mapped to DES_*, with one
2416 Since we provide two compatibility mappings, the user needs to
2417 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
2418 compatibility is desired. The default (i.e., when that macro
2419 isn't defined) is OpenSSL 0.9.6c compatibility.
2421 There are also macros that enable and disable the support of old
2422 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
2423 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
2424 are defined, the default will apply: to support the old des routines.
2426 In either case, one must include openssl/des.h to get the correct
2427 definitions. Do not try to just include openssl/des_old.h, that
2430 NOTE: This is a major break of an old API into a new one. Software
2431 authors are encouraged to switch to the DES_ style functions. Some
2432 time in the future, des_old.h and the libdes compatibility functions
2433 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
2434 default), and then completely removed.
2437 *) Test for certificates which contain unsupported critical extensions.
2438 If such a certificate is found during a verify operation it is
2439 rejected by default: this behaviour can be overridden by either
2440 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
2441 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
2442 X509_supported_extension() has also been added which returns 1 if a
2443 particular extension is supported.
2446 *) Modify the behaviour of EVP cipher functions in similar way to digests
2447 to retain compatibility with existing code.
2450 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
2451 compatibility with existing code. In particular the 'ctx' parameter does
2452 not have to be to be initialized before the call to EVP_DigestInit() and
2453 it is tidied up after a call to EVP_DigestFinal(). New function
2454 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
2455 EVP_MD_CTX_copy() changed to not require the destination to be
2456 initialized valid and new function EVP_MD_CTX_copy_ex() added which
2457 requires the destination to be valid.
2459 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
2460 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
2463 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
2464 so that complete 'Handshake' protocol structures are kept in memory
2465 instead of overwriting 'msg_type' and 'length' with 'body' data.
2468 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
2469 [Massimo Santin via Richard Levitte]
2471 *) Major restructuring to the underlying ENGINE code. This includes
2472 reduction of linker bloat, separation of pure "ENGINE" manipulation
2473 (initialisation, etc) from functionality dealing with implementations
2474 of specific crypto iterfaces. This change also introduces integrated
2475 support for symmetric ciphers and digest implementations - so ENGINEs
2476 can now accelerate these by providing EVP_CIPHER and EVP_MD
2477 implementations of their own. This is detailed in crypto/engine/README
2478 as it couldn't be adequately described here. However, there are a few
2479 API changes worth noting - some RSA, DSA, DH, and RAND functions that
2480 were changed in the original introduction of ENGINE code have now
2481 reverted back - the hooking from this code to ENGINE is now a good
2482 deal more passive and at run-time, operations deal directly with
2483 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
2484 dereferencing through an ENGINE pointer any more. Also, the ENGINE
2485 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
2486 they were not being used by the framework as there is no concept of a
2487 BIGNUM_METHOD and they could not be generalised to the new
2488 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
2489 ENGINE_cpy() has been removed as it cannot be consistently defined in
2493 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
2496 *) Change mkdef.pl to sort symbols that get the same entry number,
2497 and make sure the automatically generated functions ERR_load_*
2498 become part of libeay.num as well.
2501 *) New function SSL_renegotiate_pending(). This returns true once
2502 renegotiation has been requested (either SSL_renegotiate() call
2503 or HelloRequest/ClientHello receveived from the peer) and becomes
2504 false once a handshake has been completed.
2505 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
2506 sends a HelloRequest, but does not ensure that a handshake takes
2507 place. SSL_renegotiate_pending() is useful for checking if the
2508 client has followed the request.)
2511 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
2512 By default, clients may request session resumption even during
2513 renegotiation (if session ID contexts permit); with this option,
2514 session resumption is possible only in the first handshake.
2516 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
2517 more bits available for options that should not be part of
2518 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
2521 *) Add some demos for certificate and certificate request creation.
2524 *) Make maximum certificate chain size accepted from the peer application
2525 settable (SSL*_get/set_max_cert_list()), as proposed by
2526 "Douglas E. Engert" <deengert@anl.gov>.
2529 *) Add support for shared libraries for Unixware-7
2530 (Boyd Lynn Gerber <gerberb@zenez.com>).
2533 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
2534 be done prior to destruction. Use this to unload error strings from
2535 ENGINEs that load their own error strings. NB: This adds two new API
2536 functions to "get" and "set" this destroy handler in an ENGINE.
2539 *) Alter all existing ENGINE implementations (except "openssl" and
2540 "openbsd") to dynamically instantiate their own error strings. This
2541 makes them more flexible to be built both as statically-linked ENGINEs
2542 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
2543 Also, add stub code to each that makes building them as self-contained
2544 shared-libraries easier (see README.ENGINE).
2547 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
2548 implementations into applications that are completely implemented in
2549 self-contained shared-libraries. The "dynamic" ENGINE exposes control
2550 commands that can be used to configure what shared-library to load and
2551 to control aspects of the way it is handled. Also, made an update to
2552 the README.ENGINE file that brings its information up-to-date and
2553 provides some information and instructions on the "dynamic" ENGINE
2554 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
2557 *) Make it possible to unload ranges of ERR strings with a new
2558 "ERR_unload_strings" function.
2561 *) Add a copy() function to EVP_MD.
2564 *) Make EVP_MD routines take a context pointer instead of just the
2565 md_data void pointer.
2568 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
2569 that the digest can only process a single chunk of data
2570 (typically because it is provided by a piece of
2571 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
2572 is only going to provide a single chunk of data, and hence the
2573 framework needn't accumulate the data for oneshot drivers.
2576 *) As with "ERR", make it possible to replace the underlying "ex_data"
2577 functions. This change also alters the storage and management of global
2578 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
2579 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
2580 index counters. The API functions that use this state have been changed
2581 to take a "class_index" rather than pointers to the class's local STACK
2582 and counter, and there is now an API function to dynamically create new
2583 classes. This centralisation allows us to (a) plug a lot of the
2584 thread-safety problems that existed, and (b) makes it possible to clean
2585 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
2586 such data would previously have always leaked in application code and
2587 workarounds were in place to make the memory debugging turn a blind eye
2588 to it. Application code that doesn't use this new function will still
2589 leak as before, but their memory debugging output will announce it now
2590 rather than letting it slide.
2592 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
2593 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
2594 has a return value to indicate success or failure.
2597 *) Make it possible to replace the underlying "ERR" functions such that the
2598 global state (2 LHASH tables and 2 locks) is only used by the "default"
2599 implementation. This change also adds two functions to "get" and "set"
2600 the implementation prior to it being automatically set the first time
2601 any other ERR function takes place. Ie. an application can call "get",
2602 pass the return value to a module it has just loaded, and that module
2603 can call its own "set" function using that value. This means the
2604 module's "ERR" operations will use (and modify) the error state in the
2605 application and not in its own statically linked copy of OpenSSL code.
2608 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
2609 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
2610 the operation, and provides a more encapsulated way for external code
2611 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
2612 to use these functions rather than manually incrementing the counts.
2614 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
2617 *) Add EVP test program.
2620 *) Add symmetric cipher support to ENGINE. Expect the API to change!
2623 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
2624 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
2625 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
2626 These allow a CRL to be built without having to access X509_CRL fields
2627 directly. Modify 'ca' application to use new functions.
2630 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
2631 bug workarounds. Rollback attack detection is a security feature.
2632 The problem will only arise on OpenSSL servers when TLSv1 is not
2633 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
2634 Software authors not wanting to support TLSv1 will have special reasons
2635 for their choice and can explicitly enable this option.
2636 [Bodo Moeller, Lutz Jaenicke]
2638 *) Rationalise EVP so it can be extended: don't include a union of
2639 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
2640 (similar to those existing for EVP_CIPHER_CTX).
2645 EVP_MD_CTX_init(&md); /* new function call */
2646 EVP_DigestInit(&md, EVP_sha1());
2647 EVP_DigestUpdate(&md, in, len);
2648 EVP_DigestFinal(&md, out, NULL);
2649 EVP_MD_CTX_cleanup(&md); /* new function call */
2653 *) Make DES key schedule conform to the usual scheme, as well as
2654 correcting its structure. This means that calls to DES functions
2655 now have to pass a pointer to a des_key_schedule instead of a
2656 plain des_key_schedule (which was actually always a pointer
2659 des_key_schedule ks;
2661 des_set_key_checked(..., &ks);
2662 des_ncbc_encrypt(..., &ks, ...);
2664 (Note that a later change renames 'des_...' into 'DES_...'.)
2667 *) Initial reduction of linker bloat: the use of some functions, such as
2668 PEM causes large amounts of unused functions to be linked in due to
2669 poor organisation. For example pem_all.c contains every PEM function
2670 which has a knock on effect of linking in large amounts of (unused)
2671 ASN1 code. Grouping together similar functions and splitting unrelated
2672 functions prevents this.
2675 *) Cleanup of EVP macros.
2678 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
2679 correct _ecb suffix.
2682 *) Add initial OCSP responder support to ocsp application. The
2683 revocation information is handled using the text based index
2684 use by the ca application. The responder can either handle
2685 requests generated internally, supplied in files (for example
2686 via a CGI script) or using an internal minimal server.
2689 *) Add configuration choices to get zlib compression for TLS.
2692 *) Changes to Kerberos SSL for RFC 2712 compliance:
2693 1. Implemented real KerberosWrapper, instead of just using
2694 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
2695 2. Implemented optional authenticator field of KerberosWrapper.
2697 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
2698 and authenticator structs; see crypto/krb5/.
2700 Generalized Kerberos calls to support multiple Kerberos libraries.
2701 [Vern Staats <staatsvr@asc.hpc.mil>,
2702 Jeffrey Altman <jaltman@columbia.edu>
2703 via Richard Levitte]
2705 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
2706 already does with RSA. testdsa.h now has 'priv_key/pub_key'
2707 values for each of the key sizes rather than having just
2708 parameters (and 'speed' generating keys each time).
2711 *) Speed up EVP routines.
2714 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
2715 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
2716 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
2717 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
2719 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
2720 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
2721 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
2724 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
2726 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
2729 *) Added the OS2-EMX target.
2730 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
2732 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
2733 to support NCONF routines in extension code. New function CONF_set_nconf()
2734 to allow functions which take an NCONF to also handle the old LHASH
2735 structure: this means that the old CONF compatible routines can be
2736 retained (in particular wrt extensions) without having to duplicate the
2737 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
2740 *) Enhance the general user interface with mechanisms for inner control
2741 and with possibilities to have yes/no kind of prompts.
2744 *) Change all calls to low level digest routines in the library and
2745 applications to use EVP. Add missing calls to HMAC_cleanup() and
2746 don't assume HMAC_CTX can be copied using memcpy().
2747 [Verdon Walker <VWalker@novell.com>, Steve Henson]
2749 *) Add the possibility to control engines through control names but with
2750 arbitrary arguments instead of just a string.
2751 Change the key loaders to take a UI_METHOD instead of a callback
2752 function pointer. NOTE: this breaks binary compatibility with earlier
2753 versions of OpenSSL [engine].
2754 Adapt the nCipher code for these new conditions and add a card insertion
2758 *) Enhance the general user interface with mechanisms to better support
2759 dialog box interfaces, application-defined prompts, the possibility
2760 to use defaults (for example default passwords from somewhere else)
2761 and interrupts/cancellations.
2764 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
2765 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
2768 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
2769 tidy up some unnecessarily weird code in 'sk_new()').
2770 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
2772 *) Change the key loading routines for ENGINEs to use the same kind
2773 callback (pem_password_cb) as all other routines that need this
2777 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
2778 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
2779 than this minimum value is recommended.
2782 *) New random seeder for OpenVMS, using the system process statistics
2783 that are easily reachable.
2786 *) Windows apparently can't transparently handle global
2787 variables defined in DLLs. Initialisations such as:
2789 const ASN1_ITEM *it = &ASN1_INTEGER_it;
2791 wont compile. This is used by the any applications that need to
2792 declare their own ASN1 modules. This was fixed by adding the option
2793 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
2794 needed for static libraries under Win32.
2797 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
2798 setting of purpose and trust fields. New X509_STORE trust and
2799 purpose functions and tidy up setting in other SSL functions.
2802 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
2803 structure. These are inherited by X509_STORE_CTX when it is
2804 initialised. This allows various defaults to be set in the
2805 X509_STORE structure (such as flags for CRL checking and custom
2806 purpose or trust settings) for functions which only use X509_STORE_CTX
2807 internally such as S/MIME.
2809 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
2810 trust settings if they are not set in X509_STORE. This allows X509_STORE
2811 purposes and trust (in S/MIME for example) to override any set by default.
2813 Add command line options for CRL checking to smime, s_client and s_server
2817 *) Initial CRL based revocation checking. If the CRL checking flag(s)
2818 are set then the CRL is looked up in the X509_STORE structure and
2819 its validity and signature checked, then if the certificate is found
2820 in the CRL the verify fails with a revoked error.
2822 Various new CRL related callbacks added to X509_STORE_CTX structure.
2824 Command line options added to 'verify' application to support this.
2826 This needs some additional work, such as being able to handle multiple
2827 CRLs with different times, extension based lookup (rather than just
2828 by subject name) and ultimately more complete V2 CRL extension
2832 *) Add a general user interface API (crypto/ui/). This is designed
2833 to replace things like des_read_password and friends (backward
2834 compatibility functions using this new API are provided).
2835 The purpose is to remove prompting functions from the DES code
2836 section as well as provide for prompting through dialog boxes in
2837 a window system and the like.
2840 *) Add "ex_data" support to ENGINE so implementations can add state at a
2841 per-structure level rather than having to store it globally.
2844 *) Make it possible for ENGINE structures to be copied when retrieved by
2845 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
2846 This causes the "original" ENGINE structure to act like a template,
2847 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
2848 operational state can be localised to each ENGINE structure, despite the
2849 fact they all share the same "methods". New ENGINE structures returned in
2850 this case have no functional references and the return value is the single
2851 structural reference. This matches the single structural reference returned
2852 by ENGINE_by_id() normally, when it is incremented on the pre-existing
2856 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
2857 needs to match any other type at all we need to manually clear the
2861 *) Changes to the "openssl engine" utility to include;
2862 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
2863 about an ENGINE's available control commands.
2864 - executing control commands from command line arguments using the
2865 '-pre' and '-post' switches. '-post' is only used if '-t' is
2866 specified and the ENGINE is successfully initialised. The syntax for
2867 the individual commands are colon-separated, for example;
2868 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
2871 *) New dynamic control command support for ENGINEs. ENGINEs can now
2872 declare their own commands (numbers), names (strings), descriptions,
2873 and input types for run-time discovery by calling applications. A
2874 subset of these commands are implicitly classed as "executable"
2875 depending on their input type, and only these can be invoked through
2876 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
2877 can be based on user input, config files, etc). The distinction is
2878 that "executable" commands cannot return anything other than a boolean
2879 result and can only support numeric or string input, whereas some
2880 discoverable commands may only be for direct use through
2881 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
2882 pointers, or other custom uses. The "executable" commands are to
2883 support parameterisations of ENGINE behaviour that can be
2884 unambiguously defined by ENGINEs and used consistently across any
2885 OpenSSL-based application. Commands have been added to all the
2886 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
2887 control over shared-library paths without source code alterations.
2890 *) Changed all ENGINE implementations to dynamically allocate their
2891 ENGINEs rather than declaring them statically. Apart from this being
2892 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
2893 this also allows the implementations to compile without using the
2894 internal engine_int.h header.
2897 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
2898 'const' value. Any code that should be able to modify a RAND_METHOD
2899 should already have non-const pointers to it (ie. they should only
2900 modify their own ones).
2903 *) Made a variety of little tweaks to the ENGINE code.
2904 - "atalla" and "ubsec" string definitions were moved from header files
2905 to C code. "nuron" string definitions were placed in variables
2906 rather than hard-coded - allowing parameterisation of these values
2907 later on via ctrl() commands.
2908 - Removed unused "#if 0"'d code.
2909 - Fixed engine list iteration code so it uses ENGINE_free() to release
2910 structural references.
2911 - Constified the RAND_METHOD element of ENGINE structures.
2912 - Constified various get/set functions as appropriate and added
2913 missing functions (including a catch-all ENGINE_cpy that duplicates
2914 all ENGINE values onto a new ENGINE except reference counts/state).
2915 - Removed NULL parameter checks in get/set functions. Setting a method
2916 or function to NULL is a way of cancelling out a previously set
2917 value. Passing a NULL ENGINE parameter is just plain stupid anyway
2918 and doesn't justify the extra error symbols and code.
2919 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
2920 flags from engine_int.h to engine.h.
2921 - Changed prototypes for ENGINE handler functions (init(), finish(),
2922 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
2925 *) Implement binary inversion algorithm for BN_mod_inverse in addition
2926 to the algorithm using long division. The binary algorithm can be
2927 used only if the modulus is odd. On 32-bit systems, it is faster
2928 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
2929 roughly 5-15% for 256-bit moduli), so we use it only for moduli
2930 up to 450 bits. In 64-bit environments, the binary algorithm
2931 appears to be advantageous for much longer moduli; here we use it
2932 for moduli up to 2048 bits.
2935 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
2936 could not support the combine flag in choice fields.
2939 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
2940 extensions from a certificate request to the certificate.
2943 *) Allow multiple 'certopt' and 'nameopt' options to be separated
2944 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
2945 file: this allows the display of the certificate about to be
2946 signed to be customised, to allow certain fields to be included
2947 or excluded and extension details. The old system didn't display
2948 multicharacter strings properly, omitted fields not in the policy
2949 and couldn't display additional details such as extensions.
2952 *) Function EC_POINTs_mul for multiple scalar multiplication
2953 of an arbitrary number of elliptic curve points
2954 \sum scalars[i]*points[i],
2955 optionally including the generator defined for the EC_GROUP:
2956 scalar*generator + \sum scalars[i]*points[i].
2958 EC_POINT_mul is a simple wrapper function for the typical case
2959 that the point list has just one item (besides the optional
2963 *) First EC_METHODs for curves over GF(p):
2965 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
2966 operations and provides various method functions that can also
2967 operate with faster implementations of modular arithmetic.
2969 EC_GFp_mont_method() reuses most functions that are part of
2970 EC_GFp_simple_method, but uses Montgomery arithmetic.
2972 [Bodo Moeller; point addition and point doubling
2973 implementation directly derived from source code provided by
2974 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
2976 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
2977 crypto/ec/ec_lib.c):
2979 Curves are EC_GROUP objects (with an optional group generator)
2980 based on EC_METHODs that are built into the library.
2982 Points are EC_POINT objects based on EC_GROUP objects.
2984 Most of the framework would be able to handle curves over arbitrary
2985 finite fields, but as there are no obvious types for fields other
2986 than GF(p), some functions are limited to that for now.
2989 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
2990 that the file contains a complete HTTP response.
2993 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
2994 change the def and num file printf format specifier from "%-40sXXX"
2995 to "%-39s XXX". The latter will always guarantee a space after the
2996 field while the former will cause them to run together if the field
2997 is 40 of more characters long.
3000 *) Constify the cipher and digest 'method' functions and structures
3001 and modify related functions to take constant EVP_MD and EVP_CIPHER
3005 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
3006 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
3009 *) Modify EVP_Digest*() routines so they now return values. Although the
3010 internal software routines can never fail additional hardware versions
3014 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
3016 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
3017 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
3020 ERR_R_NESTED_ASN1_ERROR
3022 ERR_R_MISSING_ASN1_EOS
3023 were 4 .. 9, conflicting with
3024 ERR_LIB_RSA (= ERR_R_RSA_LIB)
3026 ERR_LIB_PEM (= ERR_R_PEM_LIB).
3027 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
3029 Add new error code 'ERR_R_INTERNAL_ERROR'.
3032 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
3036 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
3037 sets the subject name for a new request or supersedes the
3038 subject name in a given request. Formats that can be parsed are
3039 'CN=Some Name, OU=myOU, C=IT'
3041 'CN=Some Name/OU=myOU/C=IT'.
3043 Add options '-batch' and '-verbose' to 'openssl req'.
3044 [Massimiliano Pala <madwolf@hackmasters.net>]
3046 *) Introduce the possibility to access global variables through
3047 functions on platform were that's the best way to handle exporting
3048 global variables in shared libraries. To enable this functionality,
3049 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
3050 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
3051 is normally done by Configure or something similar).
3053 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
3054 in the source file (foo.c) like this:
3056 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
3057 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
3059 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
3060 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
3062 OPENSSL_DECLARE_GLOBAL(int,foo);
3063 #define foo OPENSSL_GLOBAL_REF(foo)
3064 OPENSSL_DECLARE_GLOBAL(double,bar);
3065 #define bar OPENSSL_GLOBAL_REF(bar)
3067 The #defines are very important, and therefore so is including the
3068 header file everywhere where the defined globals are used.
3070 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
3071 of ASN.1 items, but that structure is a bit different.
3073 The largest change is in util/mkdef.pl which has been enhanced with
3074 better and easier to understand logic to choose which symbols should
3075 go into the Windows .def files as well as a number of fixes and code
3076 cleanup (among others, algorithm keywords are now sorted
3077 lexicographically to avoid constant rewrites).
3080 *) In BN_div() keep a copy of the sign of 'num' before writing the
3081 result to 'rm' because if rm==num the value will be overwritten
3082 and produce the wrong result if 'num' is negative: this caused
3083 problems with BN_mod() and BN_nnmod().
3086 *) Function OCSP_request_verify(). This checks the signature on an
3087 OCSP request and verifies the signer certificate. The signer
3088 certificate is just checked for a generic purpose and OCSP request
3092 *) Add OCSP_check_validity() function to check the validity of OCSP
3093 responses. OCSP responses are prepared in real time and may only
3094 be a few seconds old. Simply checking that the current time lies
3095 between thisUpdate and nextUpdate max reject otherwise valid responses
3096 caused by either OCSP responder or client clock inaccuracy. Instead
3097 we allow thisUpdate and nextUpdate to fall within a certain period of
3098 the current time. The age of the response can also optionally be
3099 checked. Two new options -validity_period and -status_age added to
3103 *) If signature or public key algorithm is unrecognized print out its
3104 OID rather that just UNKNOWN.
3107 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
3108 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
3109 ID to be generated from the issuer certificate alone which can then be
3110 passed to OCSP_id_issuer_cmp().
3113 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
3114 ASN1 modules to export functions returning ASN1_ITEM pointers
3115 instead of the ASN1_ITEM structures themselves. This adds several
3116 new macros which allow the underlying ASN1 function/structure to
3117 be accessed transparently. As a result code should not use ASN1_ITEM
3118 references directly (such as &X509_it) but instead use the relevant
3119 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
3120 use of the new ASN1 code on platforms where exporting structures
3121 is problematical (for example in shared libraries) but exporting
3122 functions returning pointers to structures is not.
3125 *) Add support for overriding the generation of SSL/TLS session IDs.
3126 These callbacks can be registered either in an SSL_CTX or per SSL.
3127 The purpose of this is to allow applications to control, if they wish,
3128 the arbitrary values chosen for use as session IDs, particularly as it
3129 can be useful for session caching in multiple-server environments. A
3130 command-line switch for testing this (and any client code that wishes
3131 to use such a feature) has been added to "s_server".
3132 [Geoff Thorpe, Lutz Jaenicke]
3134 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
3135 of the form '#if defined(...) || defined(...) || ...' and
3136 '#if !defined(...) && !defined(...) && ...'. This also avoids
3137 the growing number of special cases it was previously handling.
3140 *) Make all configuration macros available for application by making
3141 sure they are available in opensslconf.h, by giving them names starting
3142 with "OPENSSL_" to avoid conflicts with other packages and by making
3143 sure e_os2.h will cover all platform-specific cases together with
3145 Additionally, it is now possible to define configuration/platform-
3146 specific names (called "system identities"). In the C code, these
3147 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
3148 macro with the name beginning with "OPENSSL_SYS_", which is determined
3149 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
3153 *) New option -set_serial to 'req' and 'x509' this allows the serial
3154 number to use to be specified on the command line. Previously self
3155 signed certificates were hard coded with serial number 0 and the
3156 CA options of 'x509' had to use a serial number in a file which was
3160 *) New options to 'ca' utility to support V2 CRL entry extensions.
3161 Currently CRL reason, invalidity date and hold instruction are
3162 supported. Add new CRL extensions to V3 code and some new objects.
3165 *) New function EVP_CIPHER_CTX_set_padding() this is used to
3166 disable standard block padding (aka PKCS#5 padding) in the EVP
3167 API, which was previously mandatory. This means that the data is
3168 not padded in any way and so the total length much be a multiple
3169 of the block size, otherwise an error occurs.
3172 *) Initial (incomplete) OCSP SSL support.
3175 *) New function OCSP_parse_url(). This splits up a URL into its host,
3176 port and path components: primarily to parse OCSP URLs. New -url
3177 option to ocsp utility.
3180 *) New nonce behavior. The return value of OCSP_check_nonce() now
3181 reflects the various checks performed. Applications can decide
3182 whether to tolerate certain situations such as an absent nonce
3183 in a response when one was present in a request: the ocsp application
3184 just prints out a warning. New function OCSP_add1_basic_nonce()
3185 this is to allow responders to include a nonce in a response even if
3186 the request is nonce-less.
3189 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
3190 skipped when using openssl x509 multiple times on a single input file,
3191 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
3194 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
3195 set string type: to handle setting ASN1_TIME structures. Fix ca
3196 utility to correctly initialize revocation date of CRLs.
3199 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
3200 the clients preferred ciphersuites and rather use its own preferences.
3201 Should help to work around M$ SGC (Server Gated Cryptography) bug in
3202 Internet Explorer by ensuring unchanged hash method during stepup.
3203 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
3206 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
3207 to aes and add a new 'exist' option to print out symbols that don't
3211 *) Additional options to ocsp utility to allow flags to be set and
3212 additional certificates supplied.
3215 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
3216 OCSP client a number of certificate to only verify the response
3220 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
3221 handle the new API. Currently only ECB, CBC modes supported. Add new
3224 Add TLS AES ciphersuites as described in RFC3268, "Advanced
3225 Encryption Standard (AES) Ciphersuites for Transport Layer
3226 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
3227 not enabled by default and were not part of the "ALL" ciphersuite
3228 alias because they were not yet official; they could be
3229 explicitly requested by specifying the "AESdraft" ciphersuite
3230 group alias. In the final release of OpenSSL 0.9.7, the group
3231 alias is called "AES" and is part of "ALL".)
3232 [Ben Laurie, Steve Henson, Bodo Moeller]
3234 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
3235 request to response.
3238 *) Functions for OCSP responders. OCSP_request_onereq_count(),
3239 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
3240 extract information from a certificate request. OCSP_response_create()
3241 creates a response and optionally adds a basic response structure.
3242 OCSP_basic_add1_status() adds a complete single response to a basic
3243 response and returns the OCSP_SINGLERESP structure just added (to allow
3244 extensions to be included for example). OCSP_basic_add1_cert() adds a
3245 certificate to a basic response and OCSP_basic_sign() signs a basic
3246 response with various flags. New helper functions ASN1_TIME_check()
3247 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
3248 (converts ASN1_TIME to GeneralizedTime).
3251 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
3252 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
3253 structure from a certificate. X509_pubkey_digest() digests the public_key
3254 contents: this is used in various key identifiers.
3257 *) Make sk_sort() tolerate a NULL argument.
3258 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
3260 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
3261 passed by the function are trusted implicitly. If any of them signed the
3262 response then it is assumed to be valid and is not verified.
3265 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
3266 to data. This was previously part of the PKCS7 ASN1 code. This
3267 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
3268 [Steve Henson, reported by Kenneth R. Robinette
3269 <support@securenetterm.com>]
3271 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
3272 routines: without these tracing memory leaks is very painful.
3273 Fix leaks in PKCS12 and PKCS7 routines.
3276 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
3277 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
3278 effectively meant GeneralizedTime would never be used. Now it
3279 is initialised to -1 but X509_time_adj() now has to check the value
3280 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
3281 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
3282 [Steve Henson, reported by Kenneth R. Robinette
3283 <support@securenetterm.com>]
3285 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
3286 result in a zero length in the ASN1_INTEGER structure which was
3287 not consistent with the structure when d2i_ASN1_INTEGER() was used
3288 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
3289 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
3290 where it did not print out a minus for negative ASN1_INTEGER.
3293 *) Add summary printout to ocsp utility. The various functions which
3294 convert status values to strings have been renamed to:
3295 OCSP_response_status_str(), OCSP_cert_status_str() and
3296 OCSP_crl_reason_str() and are no longer static. New options
3297 to verify nonce values and to disable verification. OCSP response
3298 printout format cleaned up.
3301 *) Add additional OCSP certificate checks. These are those specified
3302 in RFC2560. This consists of two separate checks: the CA of the
3303 certificate being checked must either be the OCSP signer certificate
3304 or the issuer of the OCSP signer certificate. In the latter case the
3305 OCSP signer certificate must contain the OCSP signing extended key
3306 usage. This check is performed by attempting to match the OCSP
3307 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
3308 in the OCSP_CERTID structures of the response.
3311 *) Initial OCSP certificate verification added to OCSP_basic_verify()
3312 and related routines. This uses the standard OpenSSL certificate
3313 verify routines to perform initial checks (just CA validity) and
3314 to obtain the certificate chain. Then additional checks will be
3315 performed on the chain. Currently the root CA is checked to see
3316 if it is explicitly trusted for OCSP signing. This is used to set
3317 a root CA as a global signing root: that is any certificate that
3318 chains to that CA is an acceptable OCSP signing certificate.
3321 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
3322 extensions from a separate configuration file.
3323 As when reading extensions from the main configuration file,
3324 the '-extensions ...' option may be used for specifying the
3326 [Massimiliano Pala <madwolf@comune.modena.it>]
3328 *) New OCSP utility. Allows OCSP requests to be generated or
3329 read. The request can be sent to a responder and the output
3330 parsed, outputed or printed in text form. Not complete yet:
3331 still needs to check the OCSP response validity.
3334 *) New subcommands for 'openssl ca':
3335 'openssl ca -status <serial>' prints the status of the cert with
3336 the given serial number (according to the index file).
3337 'openssl ca -updatedb' updates the expiry status of certificates
3339 [Massimiliano Pala <madwolf@comune.modena.it>]
3341 *) New '-newreq-nodes' command option to CA.pl. This is like
3342 '-newreq', but calls 'openssl req' with the '-nodes' option
3343 so that the resulting key is not encrypted.
3344 [Damien Miller <djm@mindrot.org>]
3346 *) New configuration for the GNU Hurd.
3347 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
3349 *) Initial code to implement OCSP basic response verify. This
3350 is currently incomplete. Currently just finds the signer's
3351 certificate and verifies the signature on the response.
3354 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
3355 value of OPENSSLDIR. This is available via the new '-d' option
3356 to 'openssl version', and is also included in 'openssl version -a'.
3359 *) Allowing defining memory allocation callbacks that will be given
3360 file name and line number information in additional arguments
3361 (a const char* and an int). The basic functionality remains, as
3362 well as the original possibility to just replace malloc(),
3363 realloc() and free() by functions that do not know about these
3364 additional arguments. To register and find out the current
3365 settings for extended allocation functions, the following
3366 functions are provided:
3368 CRYPTO_set_mem_ex_functions
3369 CRYPTO_set_locked_mem_ex_functions
3370 CRYPTO_get_mem_ex_functions
3371 CRYPTO_get_locked_mem_ex_functions
3373 These work the same way as CRYPTO_set_mem_functions and friends.
3374 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
3375 extended allocation function is enabled.
3376 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
3377 a conventional allocation function is enabled.
3378 [Richard Levitte, Bodo Moeller]
3380 *) Finish off removing the remaining LHASH function pointer casts.
3381 There should no longer be any prototype-casting required when using
3382 the LHASH abstraction, and any casts that remain are "bugs". See
3383 the callback types and macros at the head of lhash.h for details
3384 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
3387 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
3388 If /dev/[u]random devices are not available or do not return enough
3389 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
3391 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
3392 /etc/entropy will be queried once each in this sequence, quering stops
3393 when enough entropy was collected without querying more sockets.
3396 *) Change the Unix RAND_poll() variant to be able to poll several
3397 random devices, as specified by DEVRANDOM, until a sufficient amount
3398 of data has been collected. We spend at most 10 ms on each file
3399 (select timeout) and read in non-blocking mode. DEVRANDOM now
3400 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
3401 (previously it was just the string "/dev/urandom"), so on typical
3402 platforms the 10 ms delay will never occur.
3403 Also separate out the Unix variant to its own file, rand_unix.c.
3404 For VMS, there's a currently-empty rand_vms.c.
3407 *) Move OCSP client related routines to ocsp_cl.c. These
3408 provide utility functions which an application needing
3409 to issue a request to an OCSP responder and analyse the
3410 response will typically need: as opposed to those which an
3411 OCSP responder itself would need which will be added later.
3413 OCSP_request_sign() signs an OCSP request with an API similar
3414 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
3415 response. OCSP_response_get1_basic() extracts basic response
3416 from response. OCSP_resp_find_status(): finds and extracts status
3417 information from an OCSP_CERTID structure (which will be created
3418 when the request structure is built). These are built from lower
3419 level functions which work on OCSP_SINGLERESP structures but
3420 wont normally be used unless the application wishes to examine
3421 extensions in the OCSP response for example.
3423 Replace nonce routines with a pair of functions.
3424 OCSP_request_add1_nonce() adds a nonce value and optionally
3425 generates a random value. OCSP_check_nonce() checks the
3426 validity of the nonce in an OCSP response.
3429 *) Change function OCSP_request_add() to OCSP_request_add0_id().
3430 This doesn't copy the supplied OCSP_CERTID and avoids the
3431 need to free up the newly created id. Change return type
3432 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
3433 This can then be used to add extensions to the request.
3434 Deleted OCSP_request_new(), since most of its functionality
3435 is now in OCSP_REQUEST_new() (and the case insensitive name
3436 clash) apart from the ability to set the request name which
3437 will be added elsewhere.
3440 *) Update OCSP API. Remove obsolete extensions argument from
3441 various functions. Extensions are now handled using the new
3442 OCSP extension code. New simple OCSP HTTP function which
3443 can be used to send requests and parse the response.
3446 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
3447 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
3448 uses the special reorder version of SET OF to sort the attributes
3449 and reorder them to match the encoded order. This resolves a long
3450 standing problem: a verify on a PKCS7 structure just after signing
3451 it used to fail because the attribute order did not match the
3452 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
3453 it uses the received order. This is necessary to tolerate some broken
3454 software that does not order SET OF. This is handled by encoding
3455 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
3456 to produce the required SET OF.
3459 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
3460 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
3461 files to get correct declarations of the ASN.1 item variables.
3464 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
3465 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
3466 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
3467 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
3468 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
3469 ASN1_ITEM and no wrapper functions.
3472 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
3473 replace the old function pointer based I/O routines. Change most of
3474 the *_d2i_bio() and *_d2i_fp() functions to use these.
3477 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
3478 lines, recognice more "algorithms" that can be deselected, and make
3479 it complain about algorithm deselection that isn't recognised.
3482 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
3483 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
3484 to use new functions. Add NO_ASN1_OLD which can be set to remove
3485 some old style ASN1 functions: this can be used to determine if old
3486 code will still work when these eventually go away.
3489 *) New extension functions for OCSP structures, these follow the
3490 same conventions as certificates and CRLs.
3493 *) New function X509V3_add1_i2d(). This automatically encodes and
3494 adds an extension. Its behaviour can be customised with various
3495 flags to append, replace or delete. Various wrappers added for
3496 certifcates and CRLs.
3499 *) Fix to avoid calling the underlying ASN1 print routine when
3500 an extension cannot be parsed. Correct a typo in the
3501 OCSP_SERVICELOC extension. Tidy up print OCSP format.
3504 *) Make mkdef.pl parse some of the ASN1 macros and add apropriate
3505 entries for variables.
3508 *) Add functionality to apps/openssl.c for detecting locking
3509 problems: As the program is single-threaded, all we have
3510 to do is register a locking callback using an array for
3511 storing which locks are currently held by the program.
3514 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
3515 SSL_get_ex_data_X509_STORE_idx(), which is used in
3516 ssl_verify_cert_chain() and thus can be called at any time
3517 during TLS/SSL handshakes so that thread-safety is essential.
3518 Unfortunately, the ex_data design is not at all suited
3519 for multi-threaded use, so it probably should be abolished.
3522 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
3523 [Broadcom, tweaked and integrated by Geoff Thorpe]
3525 *) Move common extension printing code to new function
3526 X509V3_print_extensions(). Reorganise OCSP print routines and
3527 implement some needed OCSP ASN1 functions. Add OCSP extensions.
3530 *) New function X509_signature_print() to remove duplication in some
3534 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
3535 set (this was treated exactly the same as SET OF previously). This
3536 is used to reorder the STACK representing the structure to match the
3537 encoding. This will be used to get round a problem where a PKCS7
3538 structure which was signed could not be verified because the STACK
3539 order did not reflect the encoded order.
3542 *) Reimplement the OCSP ASN1 module using the new code.
3545 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
3546 for its ASN1 operations. The old style function pointers still exist
3547 for now but they will eventually go away.
3550 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
3551 completely replaces the old ASN1 functionality with a table driven
3552 encoder and decoder which interprets an ASN1_ITEM structure describing
3553 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
3554 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
3555 has also been converted to the new form.
3558 *) Change BN_mod_exp_recp so that negative moduli are tolerated
3559 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
3560 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
3561 for negative moduli.
3564 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
3565 of not touching the result's sign bit.
3568 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
3572 *) Changed the LHASH code to use prototypes for callbacks, and created
3573 macros to declare and implement thin (optionally static) functions
3574 that provide type-safety and avoid function pointer casting for the
3575 type-specific callbacks.
3578 *) Added Kerberos Cipher Suites to be used with TLS, as written in
3580 [Veers Staats <staatsvr@asc.hpc.mil>,
3581 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
3583 *) Reformat the FAQ so the different questions and answers can be divided
3584 in sections depending on the subject.
3587 *) Have the zlib compression code load ZLIB.DLL dynamically under
3591 *) New function BN_mod_sqrt for computing square roots modulo a prime
3592 (using the probabilistic Tonelli-Shanks algorithm unless
3593 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
3594 be handled deterministically).
3595 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
3597 *) Make BN_mod_inverse faster by explicitly handling small quotients
3598 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
3599 512 bits], about 30% for larger ones [1024 or 2048 bits].)
3602 *) New function BN_kronecker.
3605 *) Fix BN_gcd so that it works on negative inputs; the result is
3606 positive unless both parameters are zero.
3607 Previously something reasonably close to an infinite loop was
3608 possible because numbers could be growing instead of shrinking
3609 in the implementation of Euclid's algorithm.
3612 *) Fix BN_is_word() and BN_is_one() macros to take into account the
3613 sign of the number in question.
3615 Fix BN_is_word(a,w) to work correctly for w == 0.
3617 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
3618 because its test if the absolute value of 'a' equals 'w'.
3619 Note that BN_abs_is_word does *not* handle w == 0 reliably;
3620 it exists mostly for use in the implementations of BN_is_zero(),
3621 BN_is_one(), and BN_is_word().
3624 *) New function BN_swap.
3627 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
3628 the exponentiation functions are more likely to produce reasonable
3629 results on negative inputs.
3632 *) Change BN_mod_mul so that the result is always non-negative.
3633 Previously, it could be negative if one of the factors was negative;
3634 I don't think anyone really wanted that behaviour.
3637 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
3638 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
3639 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
3640 and add new functions:
3649 BN_mod_lshift1_quick
3653 These functions always generate non-negative results.
3655 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
3656 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
3658 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
3659 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
3660 be reduced modulo m.
3661 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
3664 The following entry accidentily appeared in the CHANGES file
3665 distributed with OpenSSL 0.9.7. The modifications described in
3666 it do *not* apply to OpenSSL 0.9.7.
3668 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
3669 was actually never needed) and in BN_mul(). The removal in BN_mul()
3670 required a small change in bn_mul_part_recursive() and the addition
3671 of the functions bn_cmp_part_words(), bn_sub_part_words() and
3672 bn_add_part_words(), which do the same thing as bn_cmp_words(),
3673 bn_sub_words() and bn_add_words() except they take arrays with
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