5 Changes between 1.0.1f and 1.0.1g [xx XXX xxxx]
7 *) Fix for the attack described in the paper "Recovering OpenSSL
8 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
9 by Yuval Yarom and Naomi Benger. Details can be obtained from:
10 http://eprint.iacr.org/2014/140
12 Thanks to Yuval Yarom and Naomi Benger for discovering this
13 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
14 [Yuval Yarom and Naomi Benger]
16 *) TLS pad extension: draft-agl-tls-padding-02
18 Workaround for the "TLS hang bug" (see FAQ and PR#2771): if the
19 TLS client Hello record length value would otherwise be > 255 and
20 less that 512 pad with a dummy extension containing zeroes so it
21 is at least 512 bytes long.
23 To enable it use an unused extension number (for example chrome uses
26 e.g. -DTLSEXT_TYPE_padding=35655
28 Since the extension is ignored the actual number doesn't matter as long
29 as it doesn't clash with any existing extension.
31 This will be updated when the extension gets an official number.
33 [Adam Langley, Steve Henson]
35 Changes between 1.0.1e and 1.0.1f [6 Jan 2014]
37 *) Fix for TLS record tampering bug. A carefully crafted invalid
38 handshake could crash OpenSSL with a NULL pointer exception.
39 Thanks to Anton Johansson for reporting this issues.
42 *) Keep original DTLS digest and encryption contexts in retransmission
43 structures so we can use the previous session parameters if they need
44 to be resent. (CVE-2013-6450)
47 *) Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which
48 avoids preferring ECDHE-ECDSA ciphers when the client appears to be
49 Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for
50 several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug
51 is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing
52 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer.
53 [Rob Stradling, Adam Langley]
55 Changes between 1.0.1d and 1.0.1e [11 Feb 2013]
57 *) Correct fix for CVE-2013-0169. The original didn't work on AES-NI
58 supporting platforms or when small records were transferred.
59 [Andy Polyakov, Steve Henson]
61 Changes between 1.0.1c and 1.0.1d [5 Feb 2013]
63 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
65 This addresses the flaw in CBC record processing discovered by
66 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
67 at: http://www.isg.rhul.ac.uk/tls/
69 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
70 Security Group at Royal Holloway, University of London
71 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
72 Emilia Käsper for the initial patch.
74 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
76 *) Fix flaw in AESNI handling of TLS 1.2 and 1.1 records for CBC mode
77 ciphersuites which can be exploited in a denial of service attack.
78 Thanks go to and to Adam Langley <agl@chromium.org> for discovering
79 and detecting this bug and to Wolfgang Ettlinger
80 <wolfgang.ettlinger@gmail.com> for independently discovering this issue.
84 *) Return an error when checking OCSP signatures when key is NULL.
85 This fixes a DoS attack. (CVE-2013-0166)
88 *) Make openssl verify return errors.
89 [Chris Palmer <palmer@google.com> and Ben Laurie]
91 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
92 the right response is stapled. Also change SSL_get_certificate()
93 so it returns the certificate actually sent.
94 See http://rt.openssl.org/Ticket/Display.html?id=2836.
95 [Rob Stradling <rob.stradling@comodo.com>]
97 *) Fix possible deadlock when decoding public keys.
100 *) Don't use TLS 1.0 record version number in initial client hello
104 Changes between 1.0.1b and 1.0.1c [10 May 2012]
106 *) Sanity check record length before skipping explicit IV in TLS
107 1.2, 1.1 and DTLS to fix DoS attack.
109 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
110 fuzzing as a service testing platform.
114 *) Initialise tkeylen properly when encrypting CMS messages.
115 Thanks to Solar Designer of Openwall for reporting this issue.
118 *) In FIPS mode don't try to use composite ciphers as they are not
122 Changes between 1.0.1a and 1.0.1b [26 Apr 2012]
124 *) OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and
125 1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately
126 mean any application compiled against OpenSSL 1.0.0 headers setting
127 SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disablng
128 TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to
129 0x10000000L Any application which was previously compiled against
130 OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1
131 will need to be recompiled as a result. Letting be results in
132 inability to disable specifically TLS 1.1 and in client context,
133 in unlike event, limit maximum offered version to TLS 1.0 [see below].
136 *) In order to ensure interoperabilty SSL_OP_NO_protocolX does not
137 disable just protocol X, but all protocols above X *if* there are
138 protocols *below* X still enabled. In more practical terms it means
139 that if application wants to disable TLS1.0 in favor of TLS1.1 and
140 above, it's not sufficient to pass SSL_OP_NO_TLSv1, one has to pass
141 SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2. This applies to
145 Changes between 1.0.1 and 1.0.1a [19 Apr 2012]
147 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
148 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
149 in CRYPTO_realloc_clean.
151 Thanks to Tavis Ormandy, Google Security Team, for discovering this
152 issue and to Adam Langley <agl@chromium.org> for fixing it.
154 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
156 *) Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections.
159 *) Workarounds for some broken servers that "hang" if a client hello
160 record length exceeds 255 bytes.
162 1. Do not use record version number > TLS 1.0 in initial client
163 hello: some (but not all) hanging servers will now work.
164 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate
165 the number of ciphers sent in the client hello. This should be
166 set to an even number, such as 50, for example by passing:
167 -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure.
168 Most broken servers should now work.
169 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable
170 TLS 1.2 client support entirely.
173 *) Fix SEGV in Vector Permutation AES module observed in OpenSSH.
176 Changes between 1.0.0h and 1.0.1 [14 Mar 2012]
178 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET
179 STRING form instead of a DigestInfo.
182 *) The format used for MDC2 RSA signatures is inconsistent between EVP
183 and the RSA_sign/RSA_verify functions. This was made more apparent when
184 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
185 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
186 the correct format in RSA_verify so both forms transparently work.
189 *) Some servers which support TLS 1.0 can choke if we initially indicate
190 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
191 encrypted premaster secret. As a workaround use the maximum pemitted
192 client version in client hello, this should keep such servers happy
193 and still work with previous versions of OpenSSL.
196 *) Add support for TLS/DTLS heartbeats.
197 [Robin Seggelmann <seggelmann@fh-muenster.de>]
199 *) Add support for SCTP.
200 [Robin Seggelmann <seggelmann@fh-muenster.de>]
202 *) Improved PRNG seeding for VOS.
203 [Paul Green <Paul.Green@stratus.com>]
205 *) Extensive assembler packs updates, most notably:
207 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
208 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
209 - x86_64: bit-sliced AES implementation;
210 - ARM: NEON support, contemporary platforms optimizations;
211 - s390x: z196 support;
212 - *: GHASH and GF(2^m) multiplication implementations;
216 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
217 (removal of unnecessary code)
218 [Peter Sylvester <peter.sylvester@edelweb.fr>]
220 *) Add TLS key material exporter from RFC 5705.
223 *) Add DTLS-SRTP negotiation from RFC 5764.
226 *) Add Next Protocol Negotiation,
227 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
228 disabled with a no-npn flag to config or Configure. Code donated
230 [Adam Langley <agl@google.com> and Ben Laurie]
232 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
233 NIST-P256, NIST-P521, with constant-time single point multiplication on
234 typical inputs. Compiler support for the nonstandard type __uint128_t is
235 required to use this (present in gcc 4.4 and later, for 64-bit builds).
236 Code made available under Apache License version 2.0.
238 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
239 line to include this in your build of OpenSSL, and run "make depend" (or
240 "make update"). This enables the following EC_METHODs:
242 EC_GFp_nistp224_method()
243 EC_GFp_nistp256_method()
244 EC_GFp_nistp521_method()
246 EC_GROUP_new_by_curve_name() will automatically use these (while
247 EC_GROUP_new_curve_GFp() currently prefers the more flexible
249 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
251 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
252 all platforms. Move ssize_t definition from e_os.h to the public
253 header file e_os2.h as it now appears in public header file cms.h
256 *) New -sigopt option to the ca, req and x509 utilities. Additional
257 signature parameters can be passed using this option and in
261 *) Add RSA PSS signing function. This will generate and set the
262 appropriate AlgorithmIdentifiers for PSS based on those in the
263 corresponding EVP_MD_CTX structure. No application support yet.
266 *) Support for companion algorithm specific ASN1 signing routines.
267 New function ASN1_item_sign_ctx() signs a pre-initialised
268 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
269 the appropriate parameters.
272 *) Add new algorithm specific ASN1 verification initialisation function
273 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
274 handling will be the same no matter what EVP_PKEY_METHOD is used.
275 Add a PSS handler to support verification of PSS signatures: checked
276 against a number of sample certificates.
279 *) Add signature printing for PSS. Add PSS OIDs.
280 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
282 *) Add algorithm specific signature printing. An individual ASN1 method
283 can now print out signatures instead of the standard hex dump.
285 More complex signatures (e.g. PSS) can print out more meaningful
286 information. Include DSA version that prints out the signature
290 *) Password based recipient info support for CMS library: implementing
294 *) Split password based encryption into PBES2 and PBKDF2 functions. This
295 neatly separates the code into cipher and PBE sections and is required
296 for some algorithms that split PBES2 into separate pieces (such as
300 *) Session-handling fixes:
301 - Fix handling of connections that are resuming with a session ID,
302 but also support Session Tickets.
303 - Fix a bug that suppressed issuing of a new ticket if the client
304 presented a ticket with an expired session.
305 - Try to set the ticket lifetime hint to something reasonable.
306 - Make tickets shorter by excluding irrelevant information.
307 - On the client side, don't ignore renewed tickets.
308 [Adam Langley, Bodo Moeller (Google)]
310 *) Fix PSK session representation.
313 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
315 This work was sponsored by Intel.
318 *) Add GCM support to TLS library. Some custom code is needed to split
319 the IV between the fixed (from PRF) and explicit (from TLS record)
320 portions. This adds all GCM ciphersuites supported by RFC5288 and
321 RFC5289. Generalise some AES* cipherstrings to inlclude GCM and
322 add a special AESGCM string for GCM only.
325 *) Expand range of ctrls for AES GCM. Permit setting invocation
326 field on decrypt and retrieval of invocation field only on encrypt.
329 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
330 As required by RFC5289 these ciphersuites cannot be used if for
331 versions of TLS earlier than 1.2.
334 *) For FIPS capable OpenSSL interpret a NULL default public key method
335 as unset and return the appopriate default but do *not* set the default.
336 This means we can return the appopriate method in applications that
337 swicth between FIPS and non-FIPS modes.
340 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
341 ENGINE is used then we cannot handle that in the FIPS module so we
342 keep original code iff non-FIPS operations are allowed.
345 *) Add -attime option to openssl utilities.
346 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
348 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
351 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
352 FIPS EC methods unconditionally for now.
355 *) New build option no-ec2m to disable characteristic 2 code.
358 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
359 all cases can be covered as some introduce binary incompatibilities.
362 *) Redirect RSA operations to FIPS module including keygen,
363 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
366 *) Add similar low level API blocking to ciphers.
369 *) Low level digest APIs are not approved in FIPS mode: any attempt
370 to use these will cause a fatal error. Applications that *really* want
371 to use them can use the private_* version instead.
374 *) Redirect cipher operations to FIPS module for FIPS builds.
377 *) Redirect digest operations to FIPS module for FIPS builds.
380 *) Update build system to add "fips" flag which will link in fipscanister.o
381 for static and shared library builds embedding a signature if needed.
384 *) Output TLS supported curves in preference order instead of numerical
385 order. This is currently hardcoded for the highest order curves first.
386 This should be configurable so applications can judge speed vs strength.
389 *) Add TLS v1.2 server support for client authentication.
392 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
396 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
397 FIPS modules versions.
400 *) Add TLS v1.2 client side support for client authentication. Keep cache
401 of handshake records longer as we don't know the hash algorithm to use
402 until after the certificate request message is received.
405 *) Initial TLS v1.2 client support. Add a default signature algorithms
406 extension including all the algorithms we support. Parse new signature
407 format in client key exchange. Relax some ECC signing restrictions for
408 TLS v1.2 as indicated in RFC5246.
411 *) Add server support for TLS v1.2 signature algorithms extension. Switch
412 to new signature format when needed using client digest preference.
413 All server ciphersuites should now work correctly in TLS v1.2. No client
414 support yet and no support for client certificates.
417 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
418 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
419 ciphersuites. At present only RSA key exchange ciphersuites work with
420 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
421 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
422 and version checking.
425 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
426 with this defined it will not be affected by any changes to ssl internal
427 structures. Add several utility functions to allow openssl application
428 to work with OPENSSL_NO_SSL_INTERN defined.
432 [Tom Wu <tjw@cs.stanford.edu> and Ben Laurie]
434 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
437 *) Permit abbreviated handshakes when renegotiating using the function
438 SSL_renegotiate_abbreviated().
439 [Robin Seggelmann <seggelmann@fh-muenster.de>]
441 *) Add call to ENGINE_register_all_complete() to
442 ENGINE_load_builtin_engines(), so some implementations get used
443 automatically instead of needing explicit application support.
446 *) Add support for TLS key exporter as described in RFC5705.
447 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
449 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
450 a few changes are required:
452 Add SSL_OP_NO_TLSv1_1 flag.
454 Update version checking logic to handle version 1.1.
455 Add explicit IV handling (ported from DTLS code).
456 Add command line options to s_client/s_server.
459 Changes between 1.0.0j and 1.0.0k [5 Feb 2013]
461 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
463 This addresses the flaw in CBC record processing discovered by
464 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
465 at: http://www.isg.rhul.ac.uk/tls/
467 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
468 Security Group at Royal Holloway, University of London
469 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
470 Emilia Käsper for the initial patch.
472 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
474 *) Return an error when checking OCSP signatures when key is NULL.
475 This fixes a DoS attack. (CVE-2013-0166)
478 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
479 the right response is stapled. Also change SSL_get_certificate()
480 so it returns the certificate actually sent.
481 See http://rt.openssl.org/Ticket/Display.html?id=2836.
483 [Rob Stradling <rob.stradling@comodo.com>]
485 *) Fix possible deadlock when decoding public keys.
488 Changes between 1.0.0i and 1.0.0j [10 May 2012]
490 [NB: OpenSSL 1.0.0i and later 1.0.0 patch levels were released after
493 *) Sanity check record length before skipping explicit IV in DTLS
496 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
497 fuzzing as a service testing platform.
501 *) Initialise tkeylen properly when encrypting CMS messages.
502 Thanks to Solar Designer of Openwall for reporting this issue.
505 Changes between 1.0.0h and 1.0.0i [19 Apr 2012]
507 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
508 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
509 in CRYPTO_realloc_clean.
511 Thanks to Tavis Ormandy, Google Security Team, for discovering this
512 issue and to Adam Langley <agl@chromium.org> for fixing it.
514 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
516 Changes between 1.0.0g and 1.0.0h [12 Mar 2012]
518 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
519 in CMS and PKCS7 code. When RSA decryption fails use a random key for
520 content decryption and always return the same error. Note: this attack
521 needs on average 2^20 messages so it only affects automated senders. The
522 old behaviour can be reenabled in the CMS code by setting the
523 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
524 an MMA defence is not necessary.
525 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
526 this issue. (CVE-2012-0884)
529 *) Fix CVE-2011-4619: make sure we really are receiving a
530 client hello before rejecting multiple SGC restarts. Thanks to
531 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
534 Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
536 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
537 Thanks to Antonio Martin, Enterprise Secure Access Research and
538 Development, Cisco Systems, Inc. for discovering this bug and
539 preparing a fix. (CVE-2012-0050)
542 Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
544 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
545 of the Vaudenay padding oracle attack on CBC mode encryption
546 which enables an efficient plaintext recovery attack against
547 the OpenSSL implementation of DTLS. Their attack exploits timing
548 differences arising during decryption processing. A research
549 paper describing this attack can be found at:
550 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
551 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
552 Security Group at Royal Holloway, University of London
553 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
554 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
555 for preparing the fix. (CVE-2011-4108)
556 [Robin Seggelmann, Michael Tuexen]
558 *) Clear bytes used for block padding of SSL 3.0 records.
560 [Adam Langley (Google)]
562 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
563 Kadianakis <desnacked@gmail.com> for discovering this issue and
564 Adam Langley for preparing the fix. (CVE-2011-4619)
565 [Adam Langley (Google)]
567 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
568 [Andrey Kulikov <amdeich@gmail.com>]
570 *) Prevent malformed RFC3779 data triggering an assertion failure.
571 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
572 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
573 [Rob Austein <sra@hactrn.net>]
575 *) Improved PRNG seeding for VOS.
576 [Paul Green <Paul.Green@stratus.com>]
578 *) Fix ssl_ciph.c set-up race.
579 [Adam Langley (Google)]
581 *) Fix spurious failures in ecdsatest.c.
582 [Emilia Käsper (Google)]
584 *) Fix the BIO_f_buffer() implementation (which was mixing different
585 interpretations of the '..._len' fields).
586 [Adam Langley (Google)]
588 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
589 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
590 threads won't reuse the same blinding coefficients.
592 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
593 lock to call BN_BLINDING_invert_ex, and avoids one use of
594 BN_BLINDING_update for each BN_BLINDING structure (previously,
595 the last update always remained unused).
596 [Emilia Käsper (Google)]
598 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
599 [Bob Buckholz (Google)]
601 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
603 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
604 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
605 [Kaspar Brand <ossl@velox.ch>]
607 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
608 for multi-threaded use of ECDH. (CVE-2011-3210)
609 [Adam Langley (Google)]
611 *) Fix x509_name_ex_d2i memory leak on bad inputs.
614 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
615 signature public key algorithm by using OID xref utilities instead.
616 Before this you could only use some ECC ciphersuites with SHA1 only.
619 *) Add protection against ECDSA timing attacks as mentioned in the paper
620 by Billy Bob Brumley and Nicola Tuveri, see:
622 http://eprint.iacr.org/2011/232.pdf
624 [Billy Bob Brumley and Nicola Tuveri]
626 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
628 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
629 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
631 *) Fix bug in string printing code: if *any* escaping is enabled we must
632 escape the escape character (backslash) or the resulting string is
636 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
638 *) Disable code workaround for ancient and obsolete Netscape browsers
639 and servers: an attacker can use it in a ciphersuite downgrade attack.
640 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
643 *) Fixed J-PAKE implementation error, originally discovered by
644 Sebastien Martini, further info and confirmation from Stefan
645 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
648 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
650 *) Fix extension code to avoid race conditions which can result in a buffer
651 overrun vulnerability: resumed sessions must not be modified as they can
652 be shared by multiple threads. CVE-2010-3864
655 *) Fix WIN32 build system to correctly link an ENGINE directory into
659 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
661 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
663 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
665 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
667 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
668 context. The operation can be customised via the ctrl mechanism in
669 case ENGINEs want to include additional functionality.
672 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
675 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
676 output hashes compatible with older versions of OpenSSL.
677 [Willy Weisz <weisz@vcpc.univie.ac.at>]
679 *) Fix compression algorithm handling: if resuming a session use the
680 compression algorithm of the resumed session instead of determining
681 it from client hello again. Don't allow server to change algorithm.
684 *) Add load_crls() function to apps tidying load_certs() too. Add option
685 to verify utility to allow additional CRLs to be included.
688 *) Update OCSP request code to permit adding custom headers to the request:
689 some responders need this.
692 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
694 [Julia Lawall <julia@diku.dk>]
696 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
697 needlessly dereferenced structures, used obsolete functions and
698 didn't handle all updated verify codes correctly.
701 *) Disable MD2 in the default configuration.
704 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
705 indicate the initial BIO being pushed or popped. This makes it possible
706 to determine whether the BIO is the one explicitly called or as a result
707 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
708 it handles reference counts correctly and doesn't zero out the I/O bio
709 when it is not being explicitly popped. WARNING: applications which
710 included workarounds for the old buggy behaviour will need to be modified
711 or they could free up already freed BIOs.
714 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
715 renaming to all platforms (within the 0.9.8 branch, this was
716 done conditionally on Netware platforms to avoid a name clash).
717 [Guenter <lists@gknw.net>]
719 *) Add ECDHE and PSK support to DTLS.
720 [Michael Tuexen <tuexen@fh-muenster.de>]
722 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
726 *) Add "missing" function EVP_MD_flags() (without this the only way to
727 retrieve a digest flags is by accessing the structure directly. Update
728 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
729 or cipher is registered as in the "from" argument. Print out all
730 registered digests in the dgst usage message instead of manually
731 attempting to work them out.
734 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
735 this allows the use of compression and extensions. Change default cipher
736 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
737 by default unless an application cipher string requests it.
740 *) Alter match criteria in PKCS12_parse(). It used to try to use local
741 key ids to find matching certificates and keys but some PKCS#12 files
742 don't follow the (somewhat unwritten) rules and this strategy fails.
743 Now just gather all certificates together and the first private key
744 then look for the first certificate that matches the key.
747 *) Support use of registered digest and cipher names for dgst and cipher
748 commands instead of having to add each one as a special case. So now
755 openssl dgst -sha256 foo
757 and this works for ENGINE based algorithms too.
761 *) Update Gost ENGINE to support parameter files.
762 [Victor B. Wagner <vitus@cryptocom.ru>]
764 *) Support GeneralizedTime in ca utility.
765 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
767 *) Enhance the hash format used for certificate directory links. The new
768 form uses the canonical encoding (meaning equivalent names will work
769 even if they aren't identical) and uses SHA1 instead of MD5. This form
770 is incompatible with the older format and as a result c_rehash should
771 be used to rebuild symbolic links.
774 *) Make PKCS#8 the default write format for private keys, replacing the
775 traditional format. This form is standardised, more secure and doesn't
776 include an implicit MD5 dependency.
779 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
780 committed to OpenSSL should pass this lot as a minimum.
783 *) Add session ticket override functionality for use by EAP-FAST.
784 [Jouni Malinen <j@w1.fi>]
786 *) Modify HMAC functions to return a value. Since these can be implemented
787 in an ENGINE errors can occur.
790 *) Type-checked OBJ_bsearch_ex.
793 *) Type-checked OBJ_bsearch. Also some constification necessitated
794 by type-checking. Still to come: TXT_DB, bsearch(?),
795 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
799 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
800 seconds to a tm structure directly, instead of going through OS
801 specific date routines. This avoids any issues with OS routines such
802 as the year 2038 bug. New *_adj() functions for ASN1 time structures
803 and X509_time_adj_ex() to cover the extended range. The existing
804 X509_time_adj() is still usable and will no longer have any date issues.
807 *) Delta CRL support. New use deltas option which will attempt to locate
808 and search any appropriate delta CRLs available.
810 This work was sponsored by Google.
813 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
814 code and add additional score elements. Validate alternate CRL paths
815 as part of the CRL checking and indicate a new error "CRL path validation
816 error" in this case. Applications wanting additional details can use
817 the verify callback and check the new "parent" field. If this is not
818 NULL CRL path validation is taking place. Existing applications wont
819 see this because it requires extended CRL support which is off by
822 This work was sponsored by Google.
825 *) Support for freshest CRL extension.
827 This work was sponsored by Google.
830 *) Initial indirect CRL support. Currently only supported in the CRLs
831 passed directly and not via lookup. Process certificate issuer
832 CRL entry extension and lookup CRL entries by bother issuer name
833 and serial number. Check and process CRL issuer entry in IDP extension.
835 This work was sponsored by Google.
838 *) Add support for distinct certificate and CRL paths. The CRL issuer
839 certificate is validated separately in this case. Only enabled if
840 an extended CRL support flag is set: this flag will enable additional
841 CRL functionality in future.
843 This work was sponsored by Google.
846 *) Add support for policy mappings extension.
848 This work was sponsored by Google.
851 *) Fixes to pathlength constraint, self issued certificate handling,
852 policy processing to align with RFC3280 and PKITS tests.
854 This work was sponsored by Google.
857 *) Support for name constraints certificate extension. DN, email, DNS
858 and URI types are currently supported.
860 This work was sponsored by Google.
863 *) To cater for systems that provide a pointer-based thread ID rather
864 than numeric, deprecate the current numeric thread ID mechanism and
865 replace it with a structure and associated callback type. This
866 mechanism allows a numeric "hash" to be extracted from a thread ID in
867 either case, and on platforms where pointers are larger than 'long',
868 mixing is done to help ensure the numeric 'hash' is usable even if it
869 can't be guaranteed unique. The default mechanism is to use "&errno"
870 as a pointer-based thread ID to distinguish between threads.
872 Applications that want to provide their own thread IDs should now use
873 CRYPTO_THREADID_set_callback() to register a callback that will call
874 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
876 Note that ERR_remove_state() is now deprecated, because it is tied
877 to the assumption that thread IDs are numeric. ERR_remove_state(0)
878 to free the current thread's error state should be replaced by
879 ERR_remove_thread_state(NULL).
881 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
882 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
883 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
884 application was previously providing a numeric thread callback that
885 was inappropriate for distinguishing threads, then uniqueness might
886 have been obtained with &errno that happened immediately in the
887 intermediate development versions of OpenSSL; this is no longer the
888 case, the numeric thread callback will now override the automatic use
890 [Geoff Thorpe, with help from Bodo Moeller]
892 *) Initial support for different CRL issuing certificates. This covers a
893 simple case where the self issued certificates in the chain exist and
894 the real CRL issuer is higher in the existing chain.
896 This work was sponsored by Google.
899 *) Removed effectively defunct crypto/store from the build.
902 *) Revamp of STACK to provide stronger type-checking. Still to come:
903 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
904 ASN1_STRING, CONF_VALUE.
907 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
908 RAM on SSL connections. This option can save about 34k per idle SSL.
911 *) Revamp of LHASH to provide stronger type-checking. Still to come:
912 STACK, TXT_DB, bsearch, qsort.
915 *) Initial support for Cryptographic Message Syntax (aka CMS) based
916 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
917 support for data, signedData, compressedData, digestedData and
918 encryptedData, envelopedData types included. Scripts to check against
919 RFC4134 examples draft and interop and consistency checks of many
920 content types and variants.
923 *) Add options to enc utility to support use of zlib compression BIO.
926 *) Extend mk1mf to support importing of options and assembly language
927 files from Configure script, currently only included in VC-WIN32.
928 The assembly language rules can now optionally generate the source
929 files from the associated perl scripts.
932 *) Implement remaining functionality needed to support GOST ciphersuites.
933 Interop testing has been performed using CryptoPro implementations.
934 [Victor B. Wagner <vitus@cryptocom.ru>]
936 *) s390x assembler pack.
939 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
943 *) Implement Opaque PRF Input TLS extension as specified in
944 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
945 official specification yet and no extension type assignment by
946 IANA exists, this extension (for now) will have to be explicitly
947 enabled when building OpenSSL by providing the extension number
948 to use. For example, specify an option
950 -DTLSEXT_TYPE_opaque_prf_input=0x9527
952 to the "config" or "Configure" script to enable the extension,
953 assuming extension number 0x9527 (which is a completely arbitrary
954 and unofficial assignment based on the MD5 hash of the Internet
955 Draft). Note that by doing so, you potentially lose
956 interoperability with other TLS implementations since these might
957 be using the same extension number for other purposes.
959 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
960 opaque PRF input value to use in the handshake. This will create
961 an interal copy of the length-'len' string at 'src', and will
962 return non-zero for success.
964 To get more control and flexibility, provide a callback function
967 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
968 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
972 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
975 Callback function 'cb' will be called in handshakes, and is
976 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
977 Argument 'arg' is for application purposes (the value as given to
978 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
979 be provided to the callback function). The callback function
980 has to return non-zero to report success: usually 1 to use opaque
981 PRF input just if possible, or 2 to enforce use of the opaque PRF
982 input. In the latter case, the library will abort the handshake
983 if opaque PRF input is not successfully negotiated.
985 Arguments 'peerinput' and 'len' given to the callback function
986 will always be NULL and 0 in the case of a client. A server will
987 see the client's opaque PRF input through these variables if
988 available (NULL and 0 otherwise). Note that if the server
989 provides an opaque PRF input, the length must be the same as the
990 length of the client's opaque PRF input.
992 Note that the callback function will only be called when creating
993 a new session (session resumption can resume whatever was
994 previously negotiated), and will not be called in SSL 2.0
995 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
996 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
997 for applications that need to enforce opaque PRF input.
1001 *) Update ssl code to support digests other than SHA1+MD5 for handshake
1004 [Victor B. Wagner <vitus@cryptocom.ru>]
1006 *) Add RFC4507 support to OpenSSL. This includes the corrections in
1007 RFC4507bis. The encrypted ticket format is an encrypted encoded
1008 SSL_SESSION structure, that way new session features are automatically
1011 If a client application caches session in an SSL_SESSION structure
1012 support is transparent because tickets are now stored in the encoded
1015 The SSL_CTX structure automatically generates keys for ticket
1016 protection in servers so again support should be possible
1017 with no application modification.
1019 If a client or server wishes to disable RFC4507 support then the option
1020 SSL_OP_NO_TICKET can be set.
1022 Add a TLS extension debugging callback to allow the contents of any client
1023 or server extensions to be examined.
1025 This work was sponsored by Google.
1028 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
1029 OpenSSL should now compile cleanly on gcc 4.2
1030 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
1032 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
1033 support including streaming MAC support: this is required for GOST
1034 ciphersuite support.
1035 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
1037 *) Add option -stream to use PKCS#7 streaming in smime utility. New
1038 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
1039 to output in BER and PEM format.
1042 *) Experimental support for use of HMAC via EVP_PKEY interface. This
1043 allows HMAC to be handled via the EVP_DigestSign*() interface. The
1044 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
1045 ENGINE support for HMAC keys which are unextractable. New -mac and
1046 -macopt options to dgst utility.
1049 *) New option -sigopt to dgst utility. Update dgst to use
1050 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
1051 alternative signing paramaters such as X9.31 or PSS in the dgst
1055 *) Change ssl_cipher_apply_rule(), the internal function that does
1056 the work each time a ciphersuite string requests enabling
1057 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
1058 removing ("!foo+bar") a class of ciphersuites: Now it maintains
1059 the order of disabled ciphersuites such that those ciphersuites
1060 that most recently went from enabled to disabled not only stay
1061 in order with respect to each other, but also have higher priority
1062 than other disabled ciphersuites the next time ciphersuites are
1065 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
1066 the same ciphersuites as with "HIGH" alone, but in a specific
1067 order where the PSK ciphersuites come first (since they are the
1068 most recently disabled ciphersuites when "HIGH" is parsed).
1070 Also, change ssl_create_cipher_list() (using this new
1071 funcionality) such that between otherwise identical
1072 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
1076 *) Change ssl_create_cipher_list() so that it automatically
1077 arranges the ciphersuites in reasonable order before starting
1078 to process the rule string. Thus, the definition for "DEFAULT"
1079 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
1080 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
1081 This makes it much easier to arrive at a reasonable default order
1082 in applications for which anonymous ciphers are OK (meaning
1083 that you can't actually use DEFAULT).
1084 [Bodo Moeller; suggested by Victor Duchovni]
1086 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
1087 processing) into multiple integers instead of setting
1088 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
1089 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
1090 (These masks as well as the individual bit definitions are hidden
1091 away into the non-exported interface ssl/ssl_locl.h, so this
1092 change to the definition of the SSL_CIPHER structure shouldn't
1093 affect applications.) This give us more bits for each of these
1094 categories, so there is no longer a need to coagulate AES128 and
1095 AES256 into a single algorithm bit, and to coagulate Camellia128
1096 and Camellia256 into a single algorithm bit, which has led to all
1099 Thus, among other things, the kludge introduced in 0.9.7m and
1100 0.9.8e for masking out AES256 independently of AES128 or masking
1101 out Camellia256 independently of AES256 is not needed here in 0.9.9.
1103 With the change, we also introduce new ciphersuite aliases that
1104 so far were missing: "AES128", "AES256", "CAMELLIA128", and
1108 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
1109 Use the leftmost N bytes of the signature input if the input is
1110 larger than the prime q (with N being the size in bytes of q).
1113 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
1114 it yet and it is largely untested.
1117 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
1120 *) Initial incomplete changes to avoid need for function casts in OpenSSL
1121 some compilers (gcc 4.2 and later) reject their use. Safestack is
1122 reimplemented. Update ASN1 to avoid use of legacy functions.
1125 *) Win32/64 targets are linked with Winsock2.
1128 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
1129 to external functions. This can be used to increase CRL handling
1130 efficiency especially when CRLs are very large by (for example) storing
1131 the CRL revoked certificates in a database.
1134 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
1135 new CRLs added to a directory can be used. New command line option
1136 -verify_return_error to s_client and s_server. This causes real errors
1137 to be returned by the verify callback instead of carrying on no matter
1138 what. This reflects the way a "real world" verify callback would behave.
1141 *) GOST engine, supporting several GOST algorithms and public key formats.
1142 Kindly donated by Cryptocom.
1145 *) Partial support for Issuing Distribution Point CRL extension. CRLs
1146 partitioned by DP are handled but no indirect CRL or reason partitioning
1147 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
1148 selected via a scoring technique which handles IDP and AKID in CRLs.
1151 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
1152 will ultimately be used for all verify operations: this will remove the
1153 X509_STORE dependency on certificate verification and allow alternative
1154 lookup methods. X509_STORE based implementations of these two callbacks.
1157 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
1158 Modify get_crl() to find a valid (unexpired) CRL if possible.
1161 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
1162 this would be called X509_CRL_cmp() but that name is already used by
1163 a function that just compares CRL issuer names. Cache several CRL
1164 extensions in X509_CRL structure and cache CRLDP in X509.
1167 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
1168 this maps equivalent X509_NAME structures into a consistent structure.
1169 Name comparison can then be performed rapidly using memcmp().
1172 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
1176 *) Allow digests to supply their own micalg string for S/MIME type using
1177 the ctrl EVP_MD_CTRL_MICALG.
1180 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
1181 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
1182 ctrl. It can then customise the structure before and/or after signing
1186 *) New function OBJ_add_sigid() to allow application defined signature OIDs
1187 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
1188 to free up any added signature OIDs.
1191 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
1192 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
1193 digest and cipher tables. New options added to openssl utility:
1194 list-message-digest-algorithms and list-cipher-algorithms.
1197 *) Change the array representation of binary polynomials: the list
1198 of degrees of non-zero coefficients is now terminated with -1.
1199 Previously it was terminated with 0, which was also part of the
1200 value; thus, the array representation was not applicable to
1201 polynomials where t^0 has coefficient zero. This change makes
1202 the array representation useful in a more general context.
1205 *) Various modifications and fixes to SSL/TLS cipher string
1206 handling. For ECC, the code now distinguishes between fixed ECDH
1207 with RSA certificates on the one hand and with ECDSA certificates
1208 on the other hand, since these are separate ciphersuites. The
1209 unused code for Fortezza ciphersuites has been removed.
1211 For consistency with EDH, ephemeral ECDH is now called "EECDH"
1212 (not "ECDHE"). For consistency with the code for DH
1213 certificates, use of ECDH certificates is now considered ECDH
1214 authentication, not RSA or ECDSA authentication (the latter is
1215 merely the CA's signing algorithm and not actively used in the
1218 The temporary ciphersuite alias "ECCdraft" is no longer
1219 available, and ECC ciphersuites are no longer excluded from "ALL"
1220 and "DEFAULT". The following aliases now exist for RFC 4492
1221 ciphersuites, most of these by analogy with the DH case:
1223 kECDHr - ECDH cert, signed with RSA
1224 kECDHe - ECDH cert, signed with ECDSA
1225 kECDH - ECDH cert (signed with either RSA or ECDSA)
1226 kEECDH - ephemeral ECDH
1227 ECDH - ECDH cert or ephemeral ECDH
1233 AECDH - anonymous ECDH
1234 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
1238 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
1239 Use correct micalg parameters depending on digest(s) in signed message.
1242 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
1243 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
1246 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
1247 an engine to register a method. Add ENGINE lookups for methods and
1248 functional reference processing.
1251 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
1252 EVP_{Sign,Verify}* which allow an application to customise the signature
1256 *) New -resign option to smime utility. This adds one or more signers
1257 to an existing PKCS#7 signedData structure. Also -md option to use an
1258 alternative message digest algorithm for signing.
1261 *) Tidy up PKCS#7 routines and add new functions to make it easier to
1262 create PKCS7 structures containing multiple signers. Update smime
1263 application to support multiple signers.
1266 *) New -macalg option to pkcs12 utility to allow setting of an alternative
1270 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
1271 Reorganize PBE internals to lookup from a static table using NIDs,
1272 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
1273 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
1274 PRF which will be automatically used with PBES2.
1277 *) Replace the algorithm specific calls to generate keys in "req" with the
1281 *) Update PKCS#7 enveloped data routines to use new API. This is now
1282 supported by any public key method supporting the encrypt operation. A
1283 ctrl is added to allow the public key algorithm to examine or modify
1284 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
1288 *) Add a ctrl to asn1 method to allow a public key algorithm to express
1289 a default digest type to use. In most cases this will be SHA1 but some
1290 algorithms (such as GOST) need to specify an alternative digest. The
1291 return value indicates how strong the prefernce is 1 means optional and
1292 2 is mandatory (that is it is the only supported type). Modify
1293 ASN1_item_sign() to accept a NULL digest argument to indicate it should
1294 use the default md. Update openssl utilities to use the default digest
1295 type for signing if it is not explicitly indicated.
1298 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
1299 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
1300 signing method from the key type. This effectively removes the link
1301 between digests and public key types.
1304 *) Add an OID cross reference table and utility functions. Its purpose is to
1305 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
1306 rsaEncryption. This will allow some of the algorithm specific hackery
1307 needed to use the correct OID to be removed.
1310 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
1311 structures for PKCS7_sign(). They are now set up by the relevant public
1315 *) Add provisional EC pkey method with support for ECDSA and ECDH.
1318 *) Add support for key derivation (agreement) in the API, DH method and
1322 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
1323 public and private key formats. As a side effect these add additional
1324 command line functionality not previously available: DSA signatures can be
1325 generated and verified using pkeyutl and DH key support and generation in
1330 [Oliver Tappe <zooey@hirschkaefer.de>]
1332 *) New make target "install_html_docs" installs HTML renditions of the
1334 [Oliver Tappe <zooey@hirschkaefer.de>]
1336 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
1337 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
1338 support key and parameter generation and add initial key generation
1339 functionality for RSA.
1342 *) Add functions for main EVP_PKEY_method operations. The undocumented
1343 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
1344 EVP_PKEY_{encrypt,decrypt}_old.
1347 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
1348 key API, doesn't do much yet.
1351 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
1352 public key algorithms. New option to openssl utility:
1353 "list-public-key-algorithms" to print out info.
1356 *) Implement the Supported Elliptic Curves Extension for
1357 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1360 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
1361 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
1364 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
1365 utilities such as rsa, dsa, dsaparam etc except they process any key
1369 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
1370 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
1371 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
1375 *) Initial support for pluggable public key ASN1.
1376 De-spaghettify the public key ASN1 handling. Move public and private
1377 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
1378 algorithm specific handling to a single module within the relevant
1379 algorithm directory. Add functions to allow (near) opaque processing
1380 of public and private key structures.
1383 *) Implement the Supported Point Formats Extension for
1384 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1387 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
1388 for the psk identity [hint] and the psk callback functions to the
1389 SSL_SESSION, SSL and SSL_CTX structure.
1392 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
1396 SSL_CTX_use_psk_identity_hint
1397 SSL_get_psk_identity_hint
1398 SSL_get_psk_identity
1399 SSL_use_psk_identity_hint
1401 [Mika Kousa and Pasi Eronen of Nokia Corporation]
1403 *) Add RFC 3161 compliant time stamp request creation, response generation
1404 and response verification functionality.
1405 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
1407 *) Add initial support for TLS extensions, specifically for the server_name
1408 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1409 have new members for a host name. The SSL data structure has an
1410 additional member SSL_CTX *initial_ctx so that new sessions can be
1411 stored in that context to allow for session resumption, even after the
1412 SSL has been switched to a new SSL_CTX in reaction to a client's
1413 server_name extension.
1415 New functions (subject to change):
1417 SSL_get_servername()
1418 SSL_get_servername_type()
1421 New CTRL codes and macros (subject to change):
1423 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1424 - SSL_CTX_set_tlsext_servername_callback()
1425 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1426 - SSL_CTX_set_tlsext_servername_arg()
1427 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1429 openssl s_client has a new '-servername ...' option.
1431 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1432 '-key2 ...', '-servername_fatal' (subject to change). This allows
1433 testing the HostName extension for a specific single host name ('-cert'
1434 and '-key' remain fallbacks for handshakes without HostName
1435 negotiation). If the unrecogninzed_name alert has to be sent, this by
1436 default is a warning; it becomes fatal with the '-servername_fatal'
1439 [Peter Sylvester, Remy Allais, Christophe Renou]
1441 *) Whirlpool hash implementation is added.
1444 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
1445 bn(64,32). Because of instruction set limitations it doesn't have
1446 any negative impact on performance. This was done mostly in order
1447 to make it possible to share assembler modules, such as bn_mul_mont
1448 implementations, between 32- and 64-bit builds without hassle.
1451 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
1452 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
1456 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
1457 dedicated Montgomery multiplication procedure, is introduced.
1458 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
1459 "64-bit" performance on certain 32-bit targets.
1462 *) New option SSL_OP_NO_COMP to disable use of compression selectively
1463 in SSL structures. New SSL ctrl to set maximum send fragment size.
1464 Save memory by seeting the I/O buffer sizes dynamically instead of
1465 using the maximum available value.
1468 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
1469 in addition to the text details.
1472 *) Very, very preliminary EXPERIMENTAL support for printing of general
1473 ASN1 structures. This currently produces rather ugly output and doesn't
1474 handle several customised structures at all.
1477 *) Integrated support for PVK file format and some related formats such
1478 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
1479 these in the 'rsa' and 'dsa' utilities.
1482 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
1485 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
1486 place for the (very old) "NETSCAPE" format certificates which are now
1487 handled using new ASN1 code equivalents.
1490 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
1491 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
1492 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
1495 *) Modify CRL distribution points extension code to print out previously
1496 unsupported fields. Enhance extension setting code to allow setting of
1500 *) Add print and set support for Issuing Distribution Point CRL extension.
1503 *) Change 'Configure' script to enable Camellia by default.
1506 Changes between 0.9.8x and 0.9.8y [5 Feb 2013]
1508 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
1510 This addresses the flaw in CBC record processing discovered by
1511 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
1512 at: http://www.isg.rhul.ac.uk/tls/
1514 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
1515 Security Group at Royal Holloway, University of London
1516 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
1517 Emilia Käsper for the initial patch.
1519 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
1521 *) Return an error when checking OCSP signatures when key is NULL.
1522 This fixes a DoS attack. (CVE-2013-0166)
1525 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
1526 the right response is stapled. Also change SSL_get_certificate()
1527 so it returns the certificate actually sent.
1528 See http://rt.openssl.org/Ticket/Display.html?id=2836.
1529 (This is a backport)
1530 [Rob Stradling <rob.stradling@comodo.com>]
1532 *) Fix possible deadlock when decoding public keys.
1535 Changes between 0.9.8w and 0.9.8x [10 May 2012]
1537 *) Sanity check record length before skipping explicit IV in DTLS
1540 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
1541 fuzzing as a service testing platform.
1545 *) Initialise tkeylen properly when encrypting CMS messages.
1546 Thanks to Solar Designer of Openwall for reporting this issue.
1549 Changes between 0.9.8v and 0.9.8w [23 Apr 2012]
1551 *) The fix for CVE-2012-2110 did not take into account that the
1552 'len' argument to BUF_MEM_grow and BUF_MEM_grow_clean is an
1553 int in OpenSSL 0.9.8, making it still vulnerable. Fix by
1554 rejecting negative len parameter. (CVE-2012-2131)
1555 [Tomas Hoger <thoger@redhat.com>]
1557 Changes between 0.9.8u and 0.9.8v [19 Apr 2012]
1559 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
1560 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
1561 in CRYPTO_realloc_clean.
1563 Thanks to Tavis Ormandy, Google Security Team, for discovering this
1564 issue and to Adam Langley <agl@chromium.org> for fixing it.
1566 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
1568 Changes between 0.9.8t and 0.9.8u [12 Mar 2012]
1570 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
1571 in CMS and PKCS7 code. When RSA decryption fails use a random key for
1572 content decryption and always return the same error. Note: this attack
1573 needs on average 2^20 messages so it only affects automated senders. The
1574 old behaviour can be reenabled in the CMS code by setting the
1575 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
1576 an MMA defence is not necessary.
1577 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
1578 this issue. (CVE-2012-0884)
1581 *) Fix CVE-2011-4619: make sure we really are receiving a
1582 client hello before rejecting multiple SGC restarts. Thanks to
1583 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
1586 Changes between 0.9.8s and 0.9.8t [18 Jan 2012]
1588 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
1589 Thanks to Antonio Martin, Enterprise Secure Access Research and
1590 Development, Cisco Systems, Inc. for discovering this bug and
1591 preparing a fix. (CVE-2012-0050)
1594 Changes between 0.9.8r and 0.9.8s [4 Jan 2012]
1596 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
1597 of the Vaudenay padding oracle attack on CBC mode encryption
1598 which enables an efficient plaintext recovery attack against
1599 the OpenSSL implementation of DTLS. Their attack exploits timing
1600 differences arising during decryption processing. A research
1601 paper describing this attack can be found at:
1602 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
1603 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
1604 Security Group at Royal Holloway, University of London
1605 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
1606 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
1607 for preparing the fix. (CVE-2011-4108)
1608 [Robin Seggelmann, Michael Tuexen]
1610 *) Stop policy check failure freeing same buffer twice. (CVE-2011-4109)
1611 [Ben Laurie, Kasper <ekasper@google.com>]
1613 *) Clear bytes used for block padding of SSL 3.0 records.
1615 [Adam Langley (Google)]
1617 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
1618 Kadianakis <desnacked@gmail.com> for discovering this issue and
1619 Adam Langley for preparing the fix. (CVE-2011-4619)
1620 [Adam Langley (Google)]
1622 *) Prevent malformed RFC3779 data triggering an assertion failure.
1623 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
1624 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
1625 [Rob Austein <sra@hactrn.net>]
1627 *) Fix ssl_ciph.c set-up race.
1628 [Adam Langley (Google)]
1630 *) Fix spurious failures in ecdsatest.c.
1631 [Emilia Käsper (Google)]
1633 *) Fix the BIO_f_buffer() implementation (which was mixing different
1634 interpretations of the '..._len' fields).
1635 [Adam Langley (Google)]
1637 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
1638 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
1639 threads won't reuse the same blinding coefficients.
1641 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
1642 lock to call BN_BLINDING_invert_ex, and avoids one use of
1643 BN_BLINDING_update for each BN_BLINDING structure (previously,
1644 the last update always remained unused).
1645 [Emilia Käsper (Google)]
1647 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
1648 for multi-threaded use of ECDH.
1649 [Adam Langley (Google)]
1651 *) Fix x509_name_ex_d2i memory leak on bad inputs.
1654 *) Add protection against ECDSA timing attacks as mentioned in the paper
1655 by Billy Bob Brumley and Nicola Tuveri, see:
1657 http://eprint.iacr.org/2011/232.pdf
1659 [Billy Bob Brumley and Nicola Tuveri]
1661 Changes between 0.9.8q and 0.9.8r [8 Feb 2011]
1663 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
1664 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
1666 *) Fix bug in string printing code: if *any* escaping is enabled we must
1667 escape the escape character (backslash) or the resulting string is
1671 Changes between 0.9.8p and 0.9.8q [2 Dec 2010]
1673 *) Disable code workaround for ancient and obsolete Netscape browsers
1674 and servers: an attacker can use it in a ciphersuite downgrade attack.
1675 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
1678 *) Fixed J-PAKE implementation error, originally discovered by
1679 Sebastien Martini, further info and confirmation from Stefan
1680 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
1683 Changes between 0.9.8o and 0.9.8p [16 Nov 2010]
1685 *) Fix extension code to avoid race conditions which can result in a buffer
1686 overrun vulnerability: resumed sessions must not be modified as they can
1687 be shared by multiple threads. CVE-2010-3864
1690 *) Fix for double free bug in ssl/s3_clnt.c CVE-2010-2939
1693 *) Don't reencode certificate when calculating signature: cache and use
1694 the original encoding instead. This makes signature verification of
1695 some broken encodings work correctly.
1698 *) ec2_GF2m_simple_mul bugfix: compute correct result if the output EC_POINT
1699 is also one of the inputs.
1700 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
1702 *) Don't repeatedly append PBE algorithms to table if they already exist.
1703 Sort table on each new add. This effectively makes the table read only
1704 after all algorithms are added and subsequent calls to PKCS12_pbe_add
1708 Changes between 0.9.8n and 0.9.8o [01 Jun 2010]
1710 [NB: OpenSSL 0.9.8o and later 0.9.8 patch levels were released after
1713 *) Correct a typo in the CMS ASN1 module which can result in invalid memory
1714 access or freeing data twice (CVE-2010-0742)
1715 [Steve Henson, Ronald Moesbergen <intercommit@gmail.com>]
1717 *) Add SHA2 algorithms to SSL_library_init(). SHA2 is becoming far more
1718 common in certificates and some applications which only call
1719 SSL_library_init and not OpenSSL_add_all_algorithms() will fail.
1723 Reduce copying into .apps and .test in makevms.com
1724 Don't try to use blank CA certificate in CA.com
1725 Allow use of C files from original directories in maketests.com
1726 [Steven M. Schweda" <sms@antinode.info>]
1728 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
1730 *) When rejecting SSL/TLS records due to an incorrect version number, never
1731 update s->server with a new major version number. As of
1732 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
1733 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
1734 the previous behavior could result in a read attempt at NULL when
1735 receiving specific incorrect SSL/TLS records once record payload
1736 protection is active. (CVE-2010-0740)
1737 [Bodo Moeller, Adam Langley <agl@chromium.org>]
1739 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
1740 could be crashed if the relevant tables were not present (e.g. chrooted).
1741 [Tomas Hoger <thoger@redhat.com>]
1743 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
1745 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
1746 [Martin Olsson, Neel Mehta]
1748 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
1749 accommodate for stack sorting, always a write lock!).
1752 *) On some versions of WIN32 Heap32Next is very slow. This can cause
1753 excessive delays in the RAND_poll(): over a minute. As a workaround
1754 include a time check in the inner Heap32Next loop too.
1757 *) The code that handled flushing of data in SSL/TLS originally used the
1758 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
1759 the problem outlined in PR#1949. The fix suggested there however can
1760 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
1761 of Apache). So instead simplify the code to flush unconditionally.
1762 This should be fine since flushing with no data to flush is a no op.
1765 *) Handle TLS versions 2.0 and later properly and correctly use the
1766 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
1767 off ancient servers have a habit of sticking around for a while...
1770 *) Modify compression code so it frees up structures without using the
1771 ex_data callbacks. This works around a problem where some applications
1772 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
1773 restarting) then use compression (e.g. SSL with compression) later.
1774 This results in significant per-connection memory leaks and
1775 has caused some security issues including CVE-2008-1678 and
1779 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
1780 change when encrypting or decrypting.
1783 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
1784 connect and renegotiate with servers which do not support RI.
1785 Until RI is more widely deployed this option is enabled by default.
1788 *) Add "missing" ssl ctrls to clear options and mode.
1791 *) If client attempts to renegotiate and doesn't support RI respond with
1792 a no_renegotiation alert as required by RFC5746. Some renegotiating
1793 TLS clients will continue a connection gracefully when they receive
1794 the alert. Unfortunately OpenSSL mishandled this alert and would hang
1795 waiting for a server hello which it will never receive. Now we treat a
1796 received no_renegotiation alert as a fatal error. This is because
1797 applications requesting a renegotiation might well expect it to succeed
1798 and would have no code in place to handle the server denying it so the
1799 only safe thing to do is to terminate the connection.
1802 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
1803 peer supports secure renegotiation and 0 otherwise. Print out peer
1804 renegotiation support in s_client/s_server.
1807 *) Replace the highly broken and deprecated SPKAC certification method with
1808 the updated NID creation version. This should correctly handle UTF8.
1811 *) Implement RFC5746. Re-enable renegotiation but require the extension
1812 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
1813 turns out to be a bad idea. It has been replaced by
1814 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
1815 SSL_CTX_set_options(). This is really not recommended unless you
1816 know what you are doing.
1817 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
1819 *) Fixes to stateless session resumption handling. Use initial_ctx when
1820 issuing and attempting to decrypt tickets in case it has changed during
1821 servername handling. Use a non-zero length session ID when attempting
1822 stateless session resumption: this makes it possible to determine if
1823 a resumption has occurred immediately after receiving server hello
1824 (several places in OpenSSL subtly assume this) instead of later in
1828 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
1829 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
1830 fixes for a few places where the return code is not checked
1832 [Julia Lawall <julia@diku.dk>]
1834 *) Add --strict-warnings option to Configure script to include devteam
1835 warnings in other configurations.
1838 *) Add support for --libdir option and LIBDIR variable in makefiles. This
1839 makes it possible to install openssl libraries in locations which
1840 have names other than "lib", for example "/usr/lib64" which some
1842 [Steve Henson, based on patch from Jeremy Utley]
1844 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
1845 X690 8.9.12 and can produce some misleading textual output of OIDs.
1846 [Steve Henson, reported by Dan Kaminsky]
1848 *) Delete MD2 from algorithm tables. This follows the recommendation in
1849 several standards that it is not used in new applications due to
1850 several cryptographic weaknesses. For binary compatibility reasons
1851 the MD2 API is still compiled in by default.
1854 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
1858 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
1859 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
1861 [Guenter <lists@gknw.net>]
1863 *) Fix the server certificate chain building code to use X509_verify_cert(),
1864 it used to have an ad-hoc builder which was unable to cope with anything
1865 other than a simple chain.
1866 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
1868 *) Don't check self signed certificate signatures in X509_verify_cert()
1869 by default (a flag can override this): it just wastes time without
1870 adding any security. As a useful side effect self signed root CAs
1871 with non-FIPS digests are now usable in FIPS mode.
1874 *) In dtls1_process_out_of_seq_message() the check if the current message
1875 is already buffered was missing. For every new message was memory
1876 allocated, allowing an attacker to perform an denial of service attack
1877 with sending out of seq handshake messages until there is no memory
1878 left. Additionally every future messege was buffered, even if the
1879 sequence number made no sense and would be part of another handshake.
1880 So only messages with sequence numbers less than 10 in advance will be
1881 buffered. (CVE-2009-1378)
1882 [Robin Seggelmann, discovered by Daniel Mentz]
1884 *) Records are buffered if they arrive with a future epoch to be
1885 processed after finishing the corresponding handshake. There is
1886 currently no limitation to this buffer allowing an attacker to perform
1887 a DOS attack with sending records with future epochs until there is no
1888 memory left. This patch adds the pqueue_size() function to detemine
1889 the size of a buffer and limits the record buffer to 100 entries.
1891 [Robin Seggelmann, discovered by Daniel Mentz]
1893 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
1894 parent structure is freed. (CVE-2009-1379)
1897 *) Handle non-blocking I/O properly in SSL_shutdown() call.
1898 [Darryl Miles <darryl-mailinglists@netbauds.net>]
1901 [Ilya O. <vrghost@gmail.com>]
1903 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
1905 *) Disable renegotiation completely - this fixes a severe security
1906 problem (CVE-2009-3555) at the cost of breaking all
1907 renegotiation. Renegotiation can be re-enabled by setting
1908 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
1909 run-time. This is really not recommended unless you know what
1913 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
1915 *) Don't set val to NULL when freeing up structures, it is freed up by
1916 underlying code. If sizeof(void *) > sizeof(long) this can result in
1917 zeroing past the valid field. (CVE-2009-0789)
1918 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
1920 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
1921 checked correctly. This would allow some invalid signed attributes to
1922 appear to verify correctly. (CVE-2009-0591)
1923 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1925 *) Reject UniversalString and BMPString types with invalid lengths. This
1926 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
1927 a legal length. (CVE-2009-0590)
1930 *) Set S/MIME signing as the default purpose rather than setting it
1931 unconditionally. This allows applications to override it at the store
1935 *) Permit restricted recursion of ASN1 strings. This is needed in practice
1936 to handle some structures.
1939 *) Improve efficiency of mem_gets: don't search whole buffer each time
1941 [Jeremy Shapiro <jnshapir@us.ibm.com>]
1943 *) New -hex option for openssl rand.
1946 *) Print out UTF8String and NumericString when parsing ASN1.
1949 *) Support NumericString type for name components.
1952 *) Allow CC in the environment to override the automatically chosen
1953 compiler. Note that nothing is done to ensure flags work with the
1957 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
1959 *) Properly check EVP_VerifyFinal() and similar return values
1961 [Ben Laurie, Bodo Moeller, Google Security Team]
1963 *) Enable TLS extensions by default.
1966 *) Allow the CHIL engine to be loaded, whether the application is
1967 multithreaded or not. (This does not release the developer from the
1968 obligation to set up the dynamic locking callbacks.)
1969 [Sander Temme <sander@temme.net>]
1971 *) Use correct exit code if there is an error in dgst command.
1972 [Steve Henson; problem pointed out by Roland Dirlewanger]
1974 *) Tweak Configure so that you need to say "experimental-jpake" to enable
1975 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
1978 *) Add experimental JPAKE support, including demo authentication in
1979 s_client and s_server.
1982 *) Set the comparison function in v3_addr_canonize().
1983 [Rob Austein <sra@hactrn.net>]
1985 *) Add support for XMPP STARTTLS in s_client.
1986 [Philip Paeps <philip@freebsd.org>]
1988 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
1989 to ensure that even with this option, only ciphersuites in the
1990 server's preference list will be accepted. (Note that the option
1991 applies only when resuming a session, so the earlier behavior was
1992 just about the algorithm choice for symmetric cryptography.)
1995 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
1997 *) Fix NULL pointer dereference if a DTLS server received
1998 ChangeCipherSpec as first record (CVE-2009-1386).
2001 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
2002 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
2005 *) The fix in 0.9.8c that supposedly got rid of unsafe
2006 double-checked locking was incomplete for RSA blinding,
2007 addressing just one layer of what turns out to have been
2008 doubly unsafe triple-checked locking.
2010 So now fix this for real by retiring the MONT_HELPER macro
2011 in crypto/rsa/rsa_eay.c.
2013 [Bodo Moeller; problem pointed out by Marius Schilder]
2015 *) Various precautionary measures:
2017 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
2019 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
2020 (NB: This would require knowledge of the secret session ticket key
2021 to exploit, in which case you'd be SOL either way.)
2023 - Change bn_nist.c so that it will properly handle input BIGNUMs
2024 outside the expected range.
2026 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
2029 [Neel Mehta, Bodo Moeller]
2031 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
2032 the load fails. Useful for distros.
2033 [Ben Laurie and the FreeBSD team]
2035 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
2038 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
2041 *) Expand ENGINE to support engine supplied SSL client certificate functions.
2043 This work was sponsored by Logica.
2046 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
2047 keystores. Support for SSL/TLS client authentication too.
2048 Not compiled unless enable-capieng specified to Configure.
2050 This work was sponsored by Logica.
2053 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
2054 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
2055 attribute creation routines such as certifcate requests and PKCS#12
2059 Changes between 0.9.8g and 0.9.8h [28 May 2008]
2061 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
2062 handshake which could lead to a cilent crash as found using the
2063 Codenomicon TLS test suite (CVE-2008-1672)
2064 [Steve Henson, Mark Cox]
2066 *) Fix double free in TLS server name extensions which could lead to
2067 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
2070 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
2072 Clear the error queue to ensure that error entries left from
2073 older function calls do not interfere with the correct operation.
2074 [Lutz Jaenicke, Erik de Castro Lopo]
2076 *) Remove root CA certificates of commercial CAs:
2078 The OpenSSL project does not recommend any specific CA and does not
2079 have any policy with respect to including or excluding any CA.
2080 Therefore it does not make any sense to ship an arbitrary selection
2081 of root CA certificates with the OpenSSL software.
2084 *) RSA OAEP patches to fix two separate invalid memory reads.
2085 The first one involves inputs when 'lzero' is greater than
2086 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
2087 before the beginning of from). The second one involves inputs where
2088 the 'db' section contains nothing but zeroes (there is a one-byte
2089 invalid read after the end of 'db').
2090 [Ivan Nestlerode <inestlerode@us.ibm.com>]
2092 *) Partial backport from 0.9.9-dev:
2094 Introduce bn_mul_mont (dedicated Montgomery multiplication
2095 procedure) as a candidate for BIGNUM assembler implementation.
2096 While 0.9.9-dev uses assembler for various architectures, only
2097 x86_64 is available by default here in the 0.9.8 branch, and
2098 32-bit x86 is available through a compile-time setting.
2100 To try the 32-bit x86 assembler implementation, use Configure
2101 option "enable-montasm" (which exists only for this backport).
2103 As "enable-montasm" for 32-bit x86 disclaims code stability
2104 anyway, in this constellation we activate additional code
2105 backported from 0.9.9-dev for further performance improvements,
2106 namely BN_from_montgomery_word. (To enable this otherwise,
2107 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
2109 [Andy Polyakov (backport partially by Bodo Moeller)]
2111 *) Add TLS session ticket callback. This allows an application to set
2112 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
2113 values. This is useful for key rollover for example where several key
2114 sets may exist with different names.
2117 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
2118 This was broken until now in 0.9.8 releases, such that the only way
2119 a registered ENGINE could be used (assuming it initialises
2120 successfully on the host) was to explicitly set it as the default
2121 for the relevant algorithms. This is in contradiction with 0.9.7
2122 behaviour and the documentation. With this fix, when an ENGINE is
2123 registered into a given algorithm's table of implementations, the
2124 'uptodate' flag is reset so that auto-discovery will be used next
2125 time a new context for that algorithm attempts to select an
2127 [Ian Lister (tweaked by Geoff Thorpe)]
2129 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
2130 implemention in the following ways:
2132 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
2135 Lack of BER streaming support means one pass streaming processing is
2136 only supported if data is detached: setting the streaming flag is
2137 ignored for embedded content.
2139 CMS support is disabled by default and must be explicitly enabled
2140 with the enable-cms configuration option.
2143 *) Update the GMP engine glue to do direct copies between BIGNUM and
2144 mpz_t when openssl and GMP use the same limb size. Otherwise the
2145 existing "conversion via a text string export" trick is still used.
2146 [Paul Sheer <paulsheer@gmail.com>]
2148 *) Zlib compression BIO. This is a filter BIO which compressed and
2149 uncompresses any data passed through it.
2152 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
2153 RFC3394 compatible AES key wrapping.
2156 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
2157 sets string data without copying. X509_ALGOR_set0() and
2158 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
2159 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
2160 from an X509_ATTRIBUTE structure optionally checking it occurs only
2161 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
2165 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
2166 to get the expected BN_FLG_CONSTTIME behavior.
2167 [Bodo Moeller (Google)]
2171 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
2172 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
2173 - added some more tests to do_tests.pl
2174 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
2175 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
2176 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
2177 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
2178 - various changes to netware.pl to enable gcc-cross builds on Win32
2180 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
2181 - various changes to fix missing prototype warnings
2182 - fixed x86nasm.pl to create correct asm files for NASM COFF output
2183 - added AES, WHIRLPOOL and CPUID assembler code to build files
2184 - added missing AES assembler make rules to mk1mf.pl
2185 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
2186 [Guenter Knauf <eflash@gmx.net>]
2188 *) Implement certificate status request TLS extension defined in RFC3546.
2189 A client can set the appropriate parameters and receive the encoded
2190 OCSP response via a callback. A server can query the supplied parameters
2191 and set the encoded OCSP response in the callback. Add simplified examples
2192 to s_client and s_server.
2195 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
2197 *) Fix various bugs:
2198 + Binary incompatibility of ssl_ctx_st structure
2199 + DTLS interoperation with non-compliant servers
2200 + Don't call get_session_cb() without proposed session
2201 + Fix ia64 assembler code
2202 [Andy Polyakov, Steve Henson]
2204 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
2206 *) DTLS Handshake overhaul. There were longstanding issues with
2207 OpenSSL DTLS implementation, which were making it impossible for
2208 RFC 4347 compliant client to communicate with OpenSSL server.
2209 Unfortunately just fixing these incompatibilities would "cut off"
2210 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
2211 server keeps tolerating non RFC compliant syntax. The opposite is
2212 not true, 0.9.8f client can not communicate with earlier server.
2213 This update even addresses CVE-2007-4995.
2216 *) Changes to avoid need for function casts in OpenSSL: some compilers
2217 (gcc 4.2 and later) reject their use.
2218 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
2221 *) Add RFC4507 support to OpenSSL. This includes the corrections in
2222 RFC4507bis. The encrypted ticket format is an encrypted encoded
2223 SSL_SESSION structure, that way new session features are automatically
2226 If a client application caches session in an SSL_SESSION structure
2227 support is transparent because tickets are now stored in the encoded
2230 The SSL_CTX structure automatically generates keys for ticket
2231 protection in servers so again support should be possible
2232 with no application modification.
2234 If a client or server wishes to disable RFC4507 support then the option
2235 SSL_OP_NO_TICKET can be set.
2237 Add a TLS extension debugging callback to allow the contents of any client
2238 or server extensions to be examined.
2240 This work was sponsored by Google.
2243 *) Add initial support for TLS extensions, specifically for the server_name
2244 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
2245 have new members for a host name. The SSL data structure has an
2246 additional member SSL_CTX *initial_ctx so that new sessions can be
2247 stored in that context to allow for session resumption, even after the
2248 SSL has been switched to a new SSL_CTX in reaction to a client's
2249 server_name extension.
2251 New functions (subject to change):
2253 SSL_get_servername()
2254 SSL_get_servername_type()
2257 New CTRL codes and macros (subject to change):
2259 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
2260 - SSL_CTX_set_tlsext_servername_callback()
2261 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
2262 - SSL_CTX_set_tlsext_servername_arg()
2263 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
2265 openssl s_client has a new '-servername ...' option.
2267 openssl s_server has new options '-servername_host ...', '-cert2 ...',
2268 '-key2 ...', '-servername_fatal' (subject to change). This allows
2269 testing the HostName extension for a specific single host name ('-cert'
2270 and '-key' remain fallbacks for handshakes without HostName
2271 negotiation). If the unrecogninzed_name alert has to be sent, this by
2272 default is a warning; it becomes fatal with the '-servername_fatal'
2275 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
2277 *) Add AES and SSE2 assembly language support to VC++ build.
2280 *) Mitigate attack on final subtraction in Montgomery reduction.
2283 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
2284 (which previously caused an internal error).
2287 *) Squeeze another 10% out of IGE mode when in != out.
2290 *) AES IGE mode speedup.
2291 [Dean Gaudet (Google)]
2293 *) Add the Korean symmetric 128-bit cipher SEED (see
2294 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
2295 add SEED ciphersuites from RFC 4162:
2297 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
2298 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
2299 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
2300 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
2302 To minimize changes between patchlevels in the OpenSSL 0.9.8
2303 series, SEED remains excluded from compilation unless OpenSSL
2304 is configured with 'enable-seed'.
2305 [KISA, Bodo Moeller]
2307 *) Mitigate branch prediction attacks, which can be practical if a
2308 single processor is shared, allowing a spy process to extract
2309 information. For detailed background information, see
2310 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
2311 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
2312 and Necessary Software Countermeasures"). The core of the change
2313 are new versions BN_div_no_branch() and
2314 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
2315 respectively, which are slower, but avoid the security-relevant
2316 conditional branches. These are automatically called by BN_div()
2317 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
2318 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
2319 remove a conditional branch.
2321 BN_FLG_CONSTTIME is the new name for the previous
2322 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
2323 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
2324 in the exponent causes BN_mod_exp_mont() to use the alternative
2325 implementation in BN_mod_exp_mont_consttime().) The old name
2326 remains as a deprecated alias.
2328 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
2329 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
2330 constant-time implementations for more than just exponentiation.
2331 Here too the old name is kept as a deprecated alias.
2333 BN_BLINDING_new() will now use BN_dup() for the modulus so that
2334 the BN_BLINDING structure gets an independent copy of the
2335 modulus. This means that the previous "BIGNUM *m" argument to
2336 BN_BLINDING_new() and to BN_BLINDING_create_param() now
2337 essentially becomes "const BIGNUM *m", although we can't actually
2338 change this in the header file before 0.9.9. It allows
2339 RSA_setup_blinding() to use BN_with_flags() on the modulus to
2340 enable BN_FLG_CONSTTIME.
2342 [Matthew D Wood (Intel Corp)]
2344 *) In the SSL/TLS server implementation, be strict about session ID
2345 context matching (which matters if an application uses a single
2346 external cache for different purposes). Previously,
2347 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
2348 set. This did ensure strict client verification, but meant that,
2349 with applications using a single external cache for quite
2350 different requirements, clients could circumvent ciphersuite
2351 restrictions for a given session ID context by starting a session
2352 in a different context.
2355 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2356 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2357 authentication-only ciphersuites.
2360 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
2361 not complete and could lead to a possible single byte overflow
2362 (CVE-2007-5135) [Ben Laurie]
2364 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
2366 *) Since AES128 and AES256 (and similarly Camellia128 and
2367 Camellia256) share a single mask bit in the logic of
2368 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2369 kludge to work properly if AES128 is available and AES256 isn't
2370 (or if Camellia128 is available and Camellia256 isn't).
2373 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
2374 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
2375 When a point or a seed is encoded in a BIT STRING, we need to
2376 prevent the removal of trailing zero bits to get the proper DER
2377 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
2378 of a NamedBitList, for which trailing 0 bits need to be removed.)
2381 *) Have SSL/TLS server implementation tolerate "mismatched" record
2382 protocol version while receiving ClientHello even if the
2383 ClientHello is fragmented. (The server can't insist on the
2384 particular protocol version it has chosen before the ServerHello
2385 message has informed the client about his choice.)
2388 *) Add RFC 3779 support.
2389 [Rob Austein for ARIN, Ben Laurie]
2391 *) Load error codes if they are not already present instead of using a
2392 static variable. This allows them to be cleanly unloaded and reloaded.
2393 Improve header file function name parsing.
2396 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
2397 or CAPABILITY handshake as required by RFCs.
2400 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
2402 *) Introduce limits to prevent malicious keys being able to
2403 cause a denial of service. (CVE-2006-2940)
2404 [Steve Henson, Bodo Moeller]
2406 *) Fix ASN.1 parsing of certain invalid structures that can result
2407 in a denial of service. (CVE-2006-2937) [Steve Henson]
2409 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2410 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2412 *) Fix SSL client code which could crash if connecting to a
2413 malicious SSLv2 server. (CVE-2006-4343)
2414 [Tavis Ormandy and Will Drewry, Google Security Team]
2416 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
2417 match only those. Before that, "AES256-SHA" would be interpreted
2418 as a pattern and match "AES128-SHA" too (since AES128-SHA got
2419 the same strength classification in 0.9.7h) as we currently only
2420 have a single AES bit in the ciphersuite description bitmap.
2421 That change, however, also applied to ciphersuite strings such as
2422 "RC4-MD5" that intentionally matched multiple ciphersuites --
2423 namely, SSL 2.0 ciphersuites in addition to the more common ones
2424 from SSL 3.0/TLS 1.0.
2426 So we change the selection algorithm again: Naming an explicit
2427 ciphersuite selects this one ciphersuite, and any other similar
2428 ciphersuite (same bitmap) from *other* protocol versions.
2429 Thus, "RC4-MD5" again will properly select both the SSL 2.0
2430 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
2432 Since SSL 2.0 does not have any ciphersuites for which the
2433 128/256 bit distinction would be relevant, this works for now.
2434 The proper fix will be to use different bits for AES128 and
2435 AES256, which would have avoided the problems from the beginning;
2436 however, bits are scarce, so we can only do this in a new release
2437 (not just a patchlevel) when we can change the SSL_CIPHER
2438 definition to split the single 'unsigned long mask' bitmap into
2439 multiple values to extend the available space.
2443 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
2445 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2446 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2448 *) Add AES IGE and biIGE modes.
2451 *) Change the Unix randomness entropy gathering to use poll() when
2452 possible instead of select(), since the latter has some
2453 undesirable limitations.
2454 [Darryl Miles via Richard Levitte and Bodo Moeller]
2456 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
2457 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
2458 cannot be implicitly activated as part of, e.g., the "AES" alias.
2459 However, please upgrade to OpenSSL 0.9.9[-dev] for
2460 non-experimental use of the ECC ciphersuites to get TLS extension
2461 support, which is required for curve and point format negotiation
2462 to avoid potential handshake problems.
2465 *) Disable rogue ciphersuites:
2467 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2468 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2469 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2471 The latter two were purportedly from
2472 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2475 Also deactivate the remaining ciphersuites from
2476 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2477 unofficial, and the ID has long expired.
2480 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2481 dual-core machines) and other potential thread-safety issues.
2484 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
2485 versions), which is now available for royalty-free use
2486 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
2487 Also, add Camellia TLS ciphersuites from RFC 4132.
2489 To minimize changes between patchlevels in the OpenSSL 0.9.8
2490 series, Camellia remains excluded from compilation unless OpenSSL
2491 is configured with 'enable-camellia'.
2494 *) Disable the padding bug check when compression is in use. The padding
2495 bug check assumes the first packet is of even length, this is not
2496 necessarily true if compresssion is enabled and can result in false
2497 positives causing handshake failure. The actual bug test is ancient
2498 code so it is hoped that implementations will either have fixed it by
2499 now or any which still have the bug do not support compression.
2502 Changes between 0.9.8a and 0.9.8b [04 May 2006]
2504 *) When applying a cipher rule check to see if string match is an explicit
2505 cipher suite and only match that one cipher suite if it is.
2508 *) Link in manifests for VC++ if needed.
2509 [Austin Ziegler <halostatue@gmail.com>]
2511 *) Update support for ECC-based TLS ciphersuites according to
2512 draft-ietf-tls-ecc-12.txt with proposed changes (but without
2513 TLS extensions, which are supported starting with the 0.9.9
2514 branch, not in the OpenSSL 0.9.8 branch).
2517 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
2518 opaque EVP_CIPHER_CTX handling.
2521 *) Fixes and enhancements to zlib compression code. We now only use
2522 "zlib1.dll" and use the default __cdecl calling convention on Win32
2523 to conform with the standards mentioned here:
2524 http://www.zlib.net/DLL_FAQ.txt
2525 Static zlib linking now works on Windows and the new --with-zlib-include
2526 --with-zlib-lib options to Configure can be used to supply the location
2527 of the headers and library. Gracefully handle case where zlib library
2531 *) Several fixes and enhancements to the OID generation code. The old code
2532 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
2533 handle numbers larger than ULONG_MAX, truncated printing and had a
2534 non standard OBJ_obj2txt() behaviour.
2537 *) Add support for building of engines under engine/ as shared libraries
2538 under VC++ build system.
2541 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
2542 Hopefully, we will not see any false combination of paths any more.
2545 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
2547 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2548 (part of SSL_OP_ALL). This option used to disable the
2549 countermeasure against man-in-the-middle protocol-version
2550 rollback in the SSL 2.0 server implementation, which is a bad
2551 idea. (CVE-2005-2969)
2553 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2554 for Information Security, National Institute of Advanced Industrial
2555 Science and Technology [AIST], Japan)]
2557 *) Add two function to clear and return the verify parameter flags.
2560 *) Keep cipherlists sorted in the source instead of sorting them at
2561 runtime, thus removing the need for a lock.
2564 *) Avoid some small subgroup attacks in Diffie-Hellman.
2565 [Nick Mathewson and Ben Laurie]
2567 *) Add functions for well-known primes.
2570 *) Extended Windows CE support.
2571 [Satoshi Nakamura and Andy Polyakov]
2573 *) Initialize SSL_METHOD structures at compile time instead of during
2574 runtime, thus removing the need for a lock.
2577 *) Make PKCS7_decrypt() work even if no certificate is supplied by
2578 attempting to decrypt each encrypted key in turn. Add support to
2582 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
2584 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
2587 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
2590 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
2591 key into the same file any more.
2594 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
2597 *) Add -utf8 command line and config file option to 'ca'.
2598 [Stefan <stf@udoma.org]
2600 *) Removed the macro des_crypt(), as it seems to conflict with some
2601 libraries. Use DES_crypt().
2604 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
2605 involves renaming the source and generated shared-libs for
2606 both. The engines will accept the corrected or legacy ids
2607 ('ncipher' and '4758_cca' respectively) when binding. NB,
2608 this only applies when building 'shared'.
2609 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
2611 *) Add attribute functions to EVP_PKEY structure. Modify
2612 PKCS12_create() to recognize a CSP name attribute and
2613 use it. Make -CSP option work again in pkcs12 utility.
2616 *) Add new functionality to the bn blinding code:
2617 - automatic re-creation of the BN_BLINDING parameters after
2618 a fixed number of uses (currently 32)
2619 - add new function for parameter creation
2620 - introduce flags to control the update behaviour of the
2621 BN_BLINDING parameters
2622 - hide BN_BLINDING structure
2623 Add a second BN_BLINDING slot to the RSA structure to improve
2624 performance when a single RSA object is shared among several
2628 *) Add support for DTLS.
2629 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
2631 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
2632 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
2635 *) Remove buggy and incompletet DH cert support from
2636 ssl/ssl_rsa.c and ssl/s3_both.c
2639 *) Use SHA-1 instead of MD5 as the default digest algorithm for
2640 the apps/openssl applications.
2643 *) Compile clean with "-Wall -Wmissing-prototypes
2644 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
2645 DEBUG_SAFESTACK must also be set.
2648 *) Change ./Configure so that certain algorithms can be disabled by default.
2649 The new counterpiece to "no-xxx" is "enable-xxx".
2651 The patented RC5 and MDC2 algorithms will now be disabled unless
2652 "enable-rc5" and "enable-mdc2", respectively, are specified.
2654 (IDEA remains enabled despite being patented. This is because IDEA
2655 is frequently required for interoperability, and there is no license
2656 fee for non-commercial use. As before, "no-idea" can be used to
2657 avoid this algorithm.)
2661 *) Add processing of proxy certificates (see RFC 3820). This work was
2662 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
2663 EGEE (Enabling Grids for E-science in Europe).
2666 *) RC4 performance overhaul on modern architectures/implementations, such
2667 as Intel P4, IA-64 and AMD64.
2670 *) New utility extract-section.pl. This can be used specify an alternative
2671 section number in a pod file instead of having to treat each file as
2672 a separate case in Makefile. This can be done by adding two lines to the
2675 =for comment openssl_section:XXX
2677 The blank line is mandatory.
2681 *) New arguments -certform, -keyform and -pass for s_client and s_server
2682 to allow alternative format key and certificate files and passphrase
2686 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
2687 update associated structures and add various utility functions.
2689 Add new policy related verify parameters, include policy checking in
2690 standard verify code. Enhance 'smime' application with extra parameters
2691 to support policy checking and print out.
2694 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
2695 Nehemiah processors. These extensions support AES encryption in hardware
2696 as well as RNG (though RNG support is currently disabled).
2697 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
2699 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
2702 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
2703 [Andy Polyakov and a number of other people]
2705 *) Improved PowerPC platform support. Most notably BIGNUM assembler
2706 implementation contributed by IBM.
2707 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
2709 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
2710 exponent rather than 'unsigned long'. There is a corresponding change to
2711 the new 'rsa_keygen' element of the RSA_METHOD structure.
2712 [Jelte Jansen, Geoff Thorpe]
2714 *) Functionality for creating the initial serial number file is now
2715 moved from CA.pl to the 'ca' utility with a new option -create_serial.
2717 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
2718 number file to 1, which is bound to cause problems. To avoid
2719 the problems while respecting compatibility between different 0.9.7
2720 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
2721 CA.pl for serial number initialization. With the new release 0.9.8,
2722 we can fix the problem directly in the 'ca' utility.)
2725 *) Reduced header interdepencies by declaring more opaque objects in
2726 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
2727 give fewer recursive includes, which could break lazy source code - so
2728 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
2729 developers should define this symbol when building and using openssl to
2730 ensure they track the recommended behaviour, interfaces, [etc], but
2731 backwards-compatible behaviour prevails when this isn't defined.
2734 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
2737 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
2738 This will generate a random key of the appropriate length based on the
2739 cipher context. The EVP_CIPHER can provide its own random key generation
2740 routine to support keys of a specific form. This is used in the des and
2741 3des routines to generate a key of the correct parity. Update S/MIME
2742 code to use new functions and hence generate correct parity DES keys.
2743 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
2744 valid (weak or incorrect parity).
2747 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
2748 as looking them up. This is useful when the verified structure may contain
2749 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
2750 present unless the new PKCS7_NO_CRL flag is asserted.
2753 *) Extend ASN1 oid configuration module. It now additionally accepts the
2756 shortName = some long name, 1.2.3.4
2759 *) Reimplemented the BN_CTX implementation. There is now no more static
2760 limitation on the number of variables it can handle nor the depth of the
2761 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
2762 information can now expand as required, and rather than having a single
2763 static array of bignums, BN_CTX now uses a linked-list of such arrays
2764 allowing it to expand on demand whilst maintaining the usefulness of
2765 BN_CTX's "bundling".
2768 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
2769 to allow all RSA operations to function using a single BN_CTX.
2772 *) Preliminary support for certificate policy evaluation and checking. This
2773 is initially intended to pass the tests outlined in "Conformance Testing
2774 of Relying Party Client Certificate Path Processing Logic" v1.07.
2777 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
2778 remained unused and not that useful. A variety of other little bignum
2779 tweaks and fixes have also been made continuing on from the audit (see
2783 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
2784 associated ASN1, EVP and SSL functions and old ASN1 macros.
2787 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
2788 and this should never fail. So the return value from the use of
2789 BN_set_word() (which can fail due to needless expansion) is now deprecated;
2790 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
2793 *) BN_CTX_get() should return zero-valued bignums, providing the same
2794 initialised value as BN_new().
2795 [Geoff Thorpe, suggested by Ulf Möller]
2797 *) Support for inhibitAnyPolicy certificate extension.
2800 *) An audit of the BIGNUM code is underway, for which debugging code is
2801 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
2802 is considered valid when processing BIGNUMs, and causes execution to
2803 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
2804 further steps are taken to deliberately pollute unused data in BIGNUM
2805 structures to try and expose faulty code further on. For now, openssl will
2806 (in its default mode of operation) continue to tolerate the inconsistent
2807 forms that it has tolerated in the past, but authors and packagers should
2808 consider trying openssl and their own applications when compiled with
2809 these debugging symbols defined. It will help highlight potential bugs in
2810 their own code, and will improve the test coverage for OpenSSL itself. At
2811 some point, these tighter rules will become openssl's default to improve
2812 maintainability, though the assert()s and other overheads will remain only
2813 in debugging configurations. See bn.h for more details.
2814 [Geoff Thorpe, Nils Larsch, Ulf Möller]
2816 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
2817 that can only be obtained through BN_CTX_new() (which implicitly
2818 initialises it). The presence of this function only made it possible
2819 to overwrite an existing structure (and cause memory leaks).
2822 *) Because of the callback-based approach for implementing LHASH as a
2823 template type, lh_insert() adds opaque objects to hash-tables and
2824 lh_doall() or lh_doall_arg() are typically used with a destructor callback
2825 to clean up those corresponding objects before destroying the hash table
2826 (and losing the object pointers). So some over-zealous constifications in
2827 LHASH have been relaxed so that lh_insert() does not take (nor store) the
2828 objects as "const" and the lh_doall[_arg] callback wrappers are not
2829 prototyped to have "const" restrictions on the object pointers they are
2830 given (and so aren't required to cast them away any more).
2833 *) The tmdiff.h API was so ugly and minimal that our own timing utility
2834 (speed) prefers to use its own implementation. The two implementations
2835 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
2836 its object type properly exposed (MS_TM) instead of casting to/from "char
2837 *". This may still change yet if someone realises MS_TM and "ms_time_***"
2838 aren't necessarily the greatest nomenclatures - but this is what was used
2839 internally to the implementation so I've used that for now.
2842 *) Ensure that deprecated functions do not get compiled when
2843 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
2844 the self-tests were still using deprecated key-generation functions so
2845 these have been updated also.
2848 *) Reorganise PKCS#7 code to separate the digest location functionality
2849 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
2850 New function PKCS7_set_digest() to set the digest type for PKCS#7
2851 digestedData type. Add additional code to correctly generate the
2852 digestedData type and add support for this type in PKCS7 initialization
2856 *) New function PKCS7_set0_type_other() this initializes a PKCS7
2857 structure of type "other".
2860 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
2861 sure the loop does correctly stop and breaking ("division by zero")
2862 modulus operations are not performed. The (pre-generated) prime
2863 table crypto/bn/bn_prime.h was already correct, but it could not be
2864 re-generated on some platforms because of the "division by zero"
2865 situation in the script.
2866 [Ralf S. Engelschall]
2868 *) Update support for ECC-based TLS ciphersuites according to
2869 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
2870 SHA-1 now is only used for "small" curves (where the
2871 representation of a field element takes up to 24 bytes); for
2872 larger curves, the field element resulting from ECDH is directly
2873 used as premaster secret.
2874 [Douglas Stebila (Sun Microsystems Laboratories)]
2876 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
2877 curve secp160r1 to the tests.
2878 [Douglas Stebila (Sun Microsystems Laboratories)]
2880 *) Add the possibility to load symbols globally with DSO.
2881 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
2883 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
2884 control of the error stack.
2887 *) Add support for STORE in ENGINE.
2890 *) Add the STORE type. The intention is to provide a common interface
2891 to certificate and key stores, be they simple file-based stores, or
2892 HSM-type store, or LDAP stores, or...
2893 NOTE: The code is currently UNTESTED and isn't really used anywhere.
2896 *) Add a generic structure called OPENSSL_ITEM. This can be used to
2897 pass a list of arguments to any function as well as provide a way
2898 for a function to pass data back to the caller.
2901 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
2902 works like BUF_strdup() but can be used to duplicate a portion of
2903 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
2907 *) Add the function sk_find_ex() which works like sk_find(), but will
2908 return an index to an element even if an exact match couldn't be
2909 found. The index is guaranteed to point at the element where the
2910 searched-for key would be inserted to preserve sorting order.
2913 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
2914 takes an extra flags argument for optional functionality. Currently,
2915 the following flags are defined:
2917 OBJ_BSEARCH_VALUE_ON_NOMATCH
2918 This one gets OBJ_bsearch_ex() to return a pointer to the first
2919 element where the comparing function returns a negative or zero
2922 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
2923 This one gets OBJ_bsearch_ex() to return a pointer to the first
2924 element where the comparing function returns zero. This is useful
2925 if there are more than one element where the comparing function
2929 *) Make it possible to create self-signed certificates with 'openssl ca'
2930 in such a way that the self-signed certificate becomes part of the
2931 CA database and uses the same mechanisms for serial number generation
2932 as all other certificate signing. The new flag '-selfsign' enables
2933 this functionality. Adapt CA.sh and CA.pl.in.
2936 *) Add functionality to check the public key of a certificate request
2937 against a given private. This is useful to check that a certificate
2938 request can be signed by that key (self-signing).
2941 *) Make it possible to have multiple active certificates with the same
2942 subject in the CA index file. This is done only if the keyword
2943 'unique_subject' is set to 'no' in the main CA section (default
2944 if 'CA_default') of the configuration file. The value is saved
2945 with the database itself in a separate index attribute file,
2946 named like the index file with '.attr' appended to the name.
2949 *) Generate muti valued AVAs using '+' notation in config files for
2953 *) Support for nameConstraints certificate extension.
2956 *) Support for policyConstraints certificate extension.
2959 *) Support for policyMappings certificate extension.
2962 *) Make sure the default DSA_METHOD implementation only uses its
2963 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
2964 and change its own handlers to be NULL so as to remove unnecessary
2965 indirection. This lets alternative implementations fallback to the
2966 default implementation more easily.
2969 *) Support for directoryName in GeneralName related extensions
2973 *) Make it possible to link applications using Makefile.shared.
2974 Make that possible even when linking against static libraries!
2977 *) Support for single pass processing for S/MIME signing. This now
2978 means that S/MIME signing can be done from a pipe, in addition
2979 cleartext signing (multipart/signed type) is effectively streaming
2980 and the signed data does not need to be all held in memory.
2982 This is done with a new flag PKCS7_STREAM. When this flag is set
2983 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
2984 is done after the data is output (and digests calculated) in
2985 SMIME_write_PKCS7().
2988 *) Add full support for -rpath/-R, both in shared libraries and
2989 applications, at least on the platforms where it's known how
2993 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
2994 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
2995 will now compute a table of multiples of the generator that
2996 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
2997 faster (notably in the case of a single point multiplication,
2998 scalar * generator).
2999 [Nils Larsch, Bodo Moeller]
3001 *) IPv6 support for certificate extensions. The various extensions
3002 which use the IP:a.b.c.d can now take IPv6 addresses using the
3003 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
3007 *) Added an ENGINE that implements RSA by performing private key
3008 exponentiations with the GMP library. The conversions to and from
3009 GMP's mpz_t format aren't optimised nor are any montgomery forms
3010 cached, and on x86 it appears OpenSSL's own performance has caught up.
3011 However there are likely to be other architectures where GMP could
3012 provide a boost. This ENGINE is not built in by default, but it can be
3013 specified at Configure time and should be accompanied by the necessary
3014 linker additions, eg;
3015 ./config -DOPENSSL_USE_GMP -lgmp
3018 *) "openssl engine" will not display ENGINE/DSO load failure errors when
3019 testing availability of engines with "-t" - the old behaviour is
3020 produced by increasing the feature's verbosity with "-tt".
3023 *) ECDSA routines: under certain error conditions uninitialized BN objects
3024 could be freed. Solution: make sure initialization is performed early
3025 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
3029 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
3030 and DH_METHOD (eg. by ENGINE implementations) to override the normal
3031 software implementations. For DSA and DH, parameter generation can
3032 also be overriden by providing the appropriate method callbacks.
3035 *) Change the "progress" mechanism used in key-generation and
3036 primality testing to functions that take a new BN_GENCB pointer in
3037 place of callback/argument pairs. The new API functions have "_ex"
3038 postfixes and the older functions are reimplemented as wrappers for
3039 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
3040 declarations of the old functions to help (graceful) attempts to
3041 migrate to the new functions. Also, the new key-generation API
3042 functions operate on a caller-supplied key-structure and return
3043 success/failure rather than returning a key or NULL - this is to
3044 help make "keygen" another member function of RSA_METHOD etc.
3046 Example for using the new callback interface:
3048 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
3052 BN_GENCB_set(&my_cb, my_callback, my_arg);
3054 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
3055 /* For the meaning of a, b in calls to my_callback(), see the
3056 * documentation of the function that calls the callback.
3057 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
3058 * my_callback should return 1 if it wants BN_is_prime_ex()
3059 * to continue, or 0 to stop.
3064 *) Change the ZLIB compression method to be stateful, and make it
3065 available to TLS with the number defined in
3066 draft-ietf-tls-compression-04.txt.
3069 *) Add the ASN.1 structures and functions for CertificatePair, which
3070 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
3072 CertificatePair ::= SEQUENCE {
3073 forward [0] Certificate OPTIONAL,
3074 reverse [1] Certificate OPTIONAL,
3075 -- at least one of the pair shall be present -- }
3077 Also implement the PEM functions to read and write certificate
3078 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
3080 This needed to be defined, mostly for the sake of the LDAP
3081 attribute crossCertificatePair, but may prove useful elsewhere as
3085 *) Make it possible to inhibit symlinking of shared libraries in
3086 Makefile.shared, for Cygwin's sake.
3089 *) Extend the BIGNUM API by creating a function
3090 void BN_set_negative(BIGNUM *a, int neg);
3091 and a macro that behave like
3092 int BN_is_negative(const BIGNUM *a);
3094 to avoid the need to access 'a->neg' directly in applications.
3097 *) Implement fast modular reduction for pseudo-Mersenne primes
3098 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
3099 EC_GROUP_new_curve_GFp() will now automatically use this
3101 [Nils Larsch <nla@trustcenter.de>]
3103 *) Add new lock type (CRYPTO_LOCK_BN).
3106 *) Change the ENGINE framework to automatically load engines
3107 dynamically from specific directories unless they could be
3108 found to already be built in or loaded. Move all the
3109 current engines except for the cryptodev one to a new
3111 The engines in engines/ are built as shared libraries if
3112 the "shared" options was given to ./Configure or ./config.
3113 Otherwise, they are inserted in libcrypto.a.
3114 /usr/local/ssl/engines is the default directory for dynamic
3115 engines, but that can be overriden at configure time through
3116 the usual use of --prefix and/or --openssldir, and at run
3117 time with the environment variable OPENSSL_ENGINES.
3118 [Geoff Thorpe and Richard Levitte]
3120 *) Add Makefile.shared, a helper makefile to build shared
3121 libraries. Addapt Makefile.org.
3124 *) Add version info to Win32 DLLs.
3125 [Peter 'Luna' Runestig" <peter@runestig.com>]
3127 *) Add new 'medium level' PKCS#12 API. Certificates and keys
3128 can be added using this API to created arbitrary PKCS#12
3129 files while avoiding the low level API.
3131 New options to PKCS12_create(), key or cert can be NULL and
3132 will then be omitted from the output file. The encryption
3133 algorithm NIDs can be set to -1 for no encryption, the mac
3134 iteration count can be set to 0 to omit the mac.
3136 Enhance pkcs12 utility by making the -nokeys and -nocerts
3137 options work when creating a PKCS#12 file. New option -nomac
3138 to omit the mac, NONE can be set for an encryption algorithm.
3139 New code is modified to use the enhanced PKCS12_create()
3140 instead of the low level API.
3143 *) Extend ASN1 encoder to support indefinite length constructed
3144 encoding. This can output sequences tags and octet strings in
3145 this form. Modify pk7_asn1.c to support indefinite length
3146 encoding. This is experimental and needs additional code to
3147 be useful, such as an ASN1 bio and some enhanced streaming
3150 Extend template encode functionality so that tagging is passed
3151 down to the template encoder.
3154 *) Let 'openssl req' fail if an argument to '-newkey' is not
3155 recognized instead of using RSA as a default.
3158 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
3159 As these are not official, they are not included in "ALL";
3160 the "ECCdraft" ciphersuite group alias can be used to select them.
3161 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
3163 *) Add ECDH engine support.
3164 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
3166 *) Add ECDH in new directory crypto/ecdh/.
3167 [Douglas Stebila (Sun Microsystems Laboratories)]
3169 *) Let BN_rand_range() abort with an error after 100 iterations
3170 without success (which indicates a broken PRNG).
3173 *) Change BN_mod_sqrt() so that it verifies that the input value
3174 is really the square of the return value. (Previously,
3175 BN_mod_sqrt would show GIGO behaviour.)
3178 *) Add named elliptic curves over binary fields from X9.62, SECG,
3179 and WAP/WTLS; add OIDs that were still missing.
3181 [Sheueling Chang Shantz and Douglas Stebila
3182 (Sun Microsystems Laboratories)]
3184 *) Extend the EC library for elliptic curves over binary fields
3185 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
3188 EC_GF2m_simple_method
3192 EC_GROUP_new_curve_GF2m
3193 EC_GROUP_set_curve_GF2m
3194 EC_GROUP_get_curve_GF2m
3195 EC_POINT_set_affine_coordinates_GF2m
3196 EC_POINT_get_affine_coordinates_GF2m
3197 EC_POINT_set_compressed_coordinates_GF2m
3199 Point compression for binary fields is disabled by default for
3200 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
3203 As binary polynomials are represented as BIGNUMs, various members
3204 of the EC_GROUP and EC_POINT data structures can be shared
3205 between the implementations for prime fields and binary fields;
3206 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
3207 are essentially identical to their ..._GFp counterparts.
3208 (For simplicity, the '..._GFp' prefix has been dropped from
3209 various internal method names.)
3211 An internal 'field_div' method (similar to 'field_mul' and
3212 'field_sqr') has been added; this is used only for binary fields.
3214 [Sheueling Chang Shantz and Douglas Stebila
3215 (Sun Microsystems Laboratories)]
3217 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
3218 through methods ('mul', 'precompute_mult').
3220 The generic implementations (now internally called 'ec_wNAF_mul'
3221 and 'ec_wNAF_precomputed_mult') remain the default if these
3222 methods are undefined.
3224 [Sheueling Chang Shantz and Douglas Stebila
3225 (Sun Microsystems Laboratories)]
3227 *) New function EC_GROUP_get_degree, which is defined through
3228 EC_METHOD. For curves over prime fields, this returns the bit
3229 length of the modulus.
3231 [Sheueling Chang Shantz and Douglas Stebila
3232 (Sun Microsystems Laboratories)]
3234 *) New functions EC_GROUP_dup, EC_POINT_dup.
3235 (These simply call ..._new and ..._copy).
3237 [Sheueling Chang Shantz and Douglas Stebila
3238 (Sun Microsystems Laboratories)]
3240 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
3241 Polynomials are represented as BIGNUMs (where the sign bit is not
3242 used) in the following functions [macros]:
3245 BN_GF2m_sub [= BN_GF2m_add]
3246 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
3247 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
3248 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
3250 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
3251 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
3252 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
3253 BN_GF2m_cmp [= BN_ucmp]
3255 (Note that only the 'mod' functions are actually for fields GF(2^m).
3256 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
3258 For some functions, an the irreducible polynomial defining a
3259 field can be given as an 'unsigned int[]' with strictly
3260 decreasing elements giving the indices of those bits that are set;
3261 i.e., p[] represents the polynomial
3262 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
3264 p[0] > p[1] > ... > p[k] = 0.
3265 This applies to the following functions:
3270 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
3271 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
3273 BN_GF2m_mod_sqrt_arr
3274 BN_GF2m_mod_solve_quad_arr
3278 Conversion can be performed by the following functions:
3283 bntest.c has additional tests for binary polynomial arithmetic.
3285 Two implementations for BN_GF2m_mod_div() are available.
3286 The default algorithm simply uses BN_GF2m_mod_inv() and
3287 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
3288 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
3289 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
3291 [Sheueling Chang Shantz and Douglas Stebila
3292 (Sun Microsystems Laboratories)]
3294 *) Add new error code 'ERR_R_DISABLED' that can be used when some
3295 functionality is disabled at compile-time.
3296 [Douglas Stebila <douglas.stebila@sun.com>]
3298 *) Change default behaviour of 'openssl asn1parse' so that more
3299 information is visible when viewing, e.g., a certificate:
3301 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
3302 mode the content of non-printable OCTET STRINGs is output in a
3303 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
3304 avoid the appearance of a printable string.
3305 [Nils Larsch <nla@trustcenter.de>]
3307 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
3309 EC_GROUP_set_asn1_flag()
3310 EC_GROUP_get_asn1_flag()
3311 EC_GROUP_set_point_conversion_form()
3312 EC_GROUP_get_point_conversion_form()
3313 These control ASN1 encoding details:
3314 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
3315 has been set to OPENSSL_EC_NAMED_CURVE.
3316 - Points are encoded in uncompressed form by default; options for
3317 asn1_for are as for point2oct, namely
3318 POINT_CONVERSION_COMPRESSED
3319 POINT_CONVERSION_UNCOMPRESSED
3320 POINT_CONVERSION_HYBRID
3322 Also add 'seed' and 'seed_len' members to EC_GROUP with access
3325 EC_GROUP_get0_seed()
3326 EC_GROUP_get_seed_len()
3327 This is used only for ASN1 purposes (so far).
3328 [Nils Larsch <nla@trustcenter.de>]
3330 *) Add 'field_type' member to EC_METHOD, which holds the NID
3331 of the appropriate field type OID. The new function
3332 EC_METHOD_get_field_type() returns this value.
3333 [Nils Larsch <nla@trustcenter.de>]
3338 EC_POINT_point2hex()
3339 EC_POINT_hex2point()
3340 providing useful interfaces to EC_POINT_point2oct() and
3341 EC_POINT_oct2point().
3342 [Nils Larsch <nla@trustcenter.de>]
3344 *) Change internals of the EC library so that the functions
3345 EC_GROUP_set_generator()
3346 EC_GROUP_get_generator()
3347 EC_GROUP_get_order()
3348 EC_GROUP_get_cofactor()
3349 are implemented directly in crypto/ec/ec_lib.c and not dispatched
3350 to methods, which would lead to unnecessary code duplication when
3351 adding different types of curves.
3352 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
3354 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
3355 arithmetic, and such that modified wNAFs are generated
3356 (which avoid length expansion in many cases).
3359 *) Add a function EC_GROUP_check_discriminant() (defined via
3360 EC_METHOD) that verifies that the curve discriminant is non-zero.
3362 Add a function EC_GROUP_check() that makes some sanity tests
3363 on a EC_GROUP, its generator and order. This includes
3364 EC_GROUP_check_discriminant().
3365 [Nils Larsch <nla@trustcenter.de>]
3367 *) Add ECDSA in new directory crypto/ecdsa/.
3369 Add applications 'openssl ecparam' and 'openssl ecdsa'
3370 (these are based on 'openssl dsaparam' and 'openssl dsa').
3372 ECDSA support is also included in various other files across the
3373 library. Most notably,
3374 - 'openssl req' now has a '-newkey ecdsa:file' option;
3375 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
3376 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
3377 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
3378 them suitable for ECDSA where domain parameters must be
3379 extracted before the specific public key;
3380 - ECDSA engine support has been added.
3381 [Nils Larsch <nla@trustcenter.de>]
3383 *) Include some named elliptic curves, and add OIDs from X9.62,
3384 SECG, and WAP/WTLS. Each curve can be obtained from the new
3386 EC_GROUP_new_by_curve_name(),
3387 and the list of available named curves can be obtained with
3388 EC_get_builtin_curves().
3389 Also add a 'curve_name' member to EC_GROUP objects, which can be
3391 EC_GROUP_set_curve_name()
3392 EC_GROUP_get_curve_name()
3393 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
3395 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
3396 was actually never needed) and in BN_mul(). The removal in BN_mul()
3397 required a small change in bn_mul_part_recursive() and the addition
3398 of the functions bn_cmp_part_words(), bn_sub_part_words() and
3399 bn_add_part_words(), which do the same thing as bn_cmp_words(),
3400 bn_sub_words() and bn_add_words() except they take arrays with
3404 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
3406 *) Cleanse PEM buffers before freeing them since they may contain
3408 [Benjamin Bennett <ben@psc.edu>]
3410 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
3411 a ciphersuite string such as "DEFAULT:RSA" cannot enable
3412 authentication-only ciphersuites.
3415 *) Since AES128 and AES256 share a single mask bit in the logic of
3416 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
3417 kludge to work properly if AES128 is available and AES256 isn't.
3420 *) Expand security boundary to match 1.1.1 module.
3423 *) Remove redundant features: hash file source, editing of test vectors
3424 modify fipsld to use external fips_premain.c signature.
3427 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
3428 run algorithm test programs.
3431 *) Make algorithm test programs more tolerant of whitespace.
3434 *) Have SSL/TLS server implementation tolerate "mismatched" record
3435 protocol version while receiving ClientHello even if the
3436 ClientHello is fragmented. (The server can't insist on the
3437 particular protocol version it has chosen before the ServerHello
3438 message has informed the client about his choice.)
3441 *) Load error codes if they are not already present instead of using a
3442 static variable. This allows them to be cleanly unloaded and reloaded.
3445 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
3447 *) Introduce limits to prevent malicious keys being able to
3448 cause a denial of service. (CVE-2006-2940)
3449 [Steve Henson, Bodo Moeller]
3451 *) Fix ASN.1 parsing of certain invalid structures that can result
3452 in a denial of service. (CVE-2006-2937) [Steve Henson]
3454 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
3455 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
3457 *) Fix SSL client code which could crash if connecting to a
3458 malicious SSLv2 server. (CVE-2006-4343)
3459 [Tavis Ormandy and Will Drewry, Google Security Team]
3461 *) Change ciphersuite string processing so that an explicit
3462 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
3463 will no longer include "AES128-SHA"), and any other similar
3464 ciphersuite (same bitmap) from *other* protocol versions (so that
3465 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
3466 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
3467 changes from 0.9.8b and 0.9.8d.
3470 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
3472 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
3473 (CVE-2006-4339) [Ben Laurie and Google Security Team]
3475 *) Change the Unix randomness entropy gathering to use poll() when
3476 possible instead of select(), since the latter has some
3477 undesirable limitations.
3478 [Darryl Miles via Richard Levitte and Bodo Moeller]
3480 *) Disable rogue ciphersuites:
3482 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
3483 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
3484 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
3486 The latter two were purportedly from
3487 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
3490 Also deactive the remaining ciphersuites from
3491 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
3492 unofficial, and the ID has long expired.
3495 *) Fix RSA blinding Heisenbug (problems sometimes occured on
3496 dual-core machines) and other potential thread-safety issues.
3499 Changes between 0.9.7i and 0.9.7j [04 May 2006]
3501 *) Adapt fipsld and the build system to link against the validated FIPS
3502 module in FIPS mode.
3505 *) Fixes for VC++ 2005 build under Windows.
3508 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
3509 from a Windows bash shell such as MSYS. It is autodetected from the
3510 "config" script when run from a VC++ environment. Modify standard VC++
3511 build to use fipscanister.o from the GNU make build.
3514 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
3516 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
3517 The value now differs depending on if you build for FIPS or not.
3518 BEWARE! A program linked with a shared FIPSed libcrypto can't be
3519 safely run with a non-FIPSed libcrypto, as it may crash because of
3520 the difference induced by this change.
3523 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
3525 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
3526 (part of SSL_OP_ALL). This option used to disable the
3527 countermeasure against man-in-the-middle protocol-version
3528 rollback in the SSL 2.0 server implementation, which is a bad
3529 idea. (CVE-2005-2969)
3531 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
3532 for Information Security, National Institute of Advanced Industrial
3533 Science and Technology [AIST], Japan)]
3535 *) Minimal support for X9.31 signatures and PSS padding modes. This is
3536 mainly for FIPS compliance and not fully integrated at this stage.
3539 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
3540 the exponentiation using a fixed-length exponent. (Otherwise,
3541 the information leaked through timing could expose the secret key
3542 after many signatures; cf. Bleichenbacher's attack on DSA with
3546 *) Make a new fixed-window mod_exp implementation the default for
3547 RSA, DSA, and DH private-key operations so that the sequence of
3548 squares and multiplies and the memory access pattern are
3549 independent of the particular secret key. This will mitigate
3550 cache-timing and potential related attacks.
3552 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
3553 and this is automatically used by BN_mod_exp_mont() if the new flag
3554 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
3555 will use this BN flag for private exponents unless the flag
3556 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
3557 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
3559 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
3561 *) Change the client implementation for SSLv23_method() and
3562 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
3563 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
3564 (Previously, the SSL 2.0 backwards compatible Client Hello
3565 message format would be used even with SSL_OP_NO_SSLv2.)
3568 *) Add support for smime-type MIME parameter in S/MIME messages which some
3572 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
3573 a threadsafe manner. Modify rsa code to use new function and add calls
3574 to dsa and dh code (which had race conditions before).
3577 *) Include the fixed error library code in the C error file definitions
3578 instead of fixing them up at runtime. This keeps the error code
3579 structures constant.
3582 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
3584 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
3587 *) Fixes for newer kerberos headers. NB: the casts are needed because
3588 the 'length' field is signed on one version and unsigned on another
3589 with no (?) obvious way to tell the difference, without these VC++
3590 complains. Also the "definition" of FAR (blank) is no longer included
3591 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
3592 some needed definitions.
3595 *) Undo Cygwin change.
3598 *) Added support for proxy certificates according to RFC 3820.
3599 Because they may be a security thread to unaware applications,
3600 they must be explicitely allowed in run-time. See
3601 docs/HOWTO/proxy_certificates.txt for further information.
3604 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
3606 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
3607 server and client random values. Previously
3608 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
3609 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
3611 This change has negligible security impact because:
3613 1. Server and client random values still have 24 bytes of pseudo random
3616 2. Server and client random values are sent in the clear in the initial
3619 3. The master secret is derived using the premaster secret (48 bytes in
3620 size for static RSA ciphersuites) as well as client server and random
3623 The OpenSSL team would like to thank the UK NISCC for bringing this issue
3626 [Stephen Henson, reported by UK NISCC]
3628 *) Use Windows randomness collection on Cygwin.
3631 *) Fix hang in EGD/PRNGD query when communication socket is closed
3632 prematurely by EGD/PRNGD.
3633 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
3635 *) Prompt for pass phrases when appropriate for PKCS12 input format.
3638 *) Back-port of selected performance improvements from development
3639 branch, as well as improved support for PowerPC platforms.
3642 *) Add lots of checks for memory allocation failure, error codes to indicate
3643 failure and freeing up memory if a failure occurs.
3644 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
3646 *) Add new -passin argument to dgst.
3649 *) Perform some character comparisons of different types in X509_NAME_cmp:
3650 this is needed for some certificates that reencode DNs into UTF8Strings
3651 (in violation of RFC3280) and can't or wont issue name rollover
3655 *) Make an explicit check during certificate validation to see that
3656 the CA setting in each certificate on the chain is correct. As a
3657 side effect always do the following basic checks on extensions,
3658 not just when there's an associated purpose to the check:
3660 - if there is an unhandled critical extension (unless the user
3661 has chosen to ignore this fault)
3662 - if the path length has been exceeded (if one is set at all)
3663 - that certain extensions fit the associated purpose (if one has
3667 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
3669 *) Avoid a race condition when CRLs are checked in a multi threaded
3670 environment. This would happen due to the reordering of the revoked
3671 entries during signature checking and serial number lookup. Now the
3672 encoding is cached and the serial number sort performed under a lock.
3673 Add new STACK function sk_is_sorted().
3676 *) Add Delta CRL to the extension code.
3679 *) Various fixes to s3_pkt.c so alerts are sent properly.
3680 [David Holmes <d.holmes@f5.com>]
3682 *) Reduce the chances of duplicate issuer name and serial numbers (in
3683 violation of RFC3280) using the OpenSSL certificate creation utilities.
3684 This is done by creating a random 64 bit value for the initial serial
3685 number when a serial number file is created or when a self signed
3686 certificate is created using 'openssl req -x509'. The initial serial
3687 number file is created using 'openssl x509 -next_serial' in CA.pl
3688 rather than being initialized to 1.
3691 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
3693 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
3694 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
3695 [Joe Orton, Steve Henson]
3697 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
3699 [Joe Orton, Steve Henson]
3701 *) Make it possible to have multiple active certificates with the same
3702 subject in the CA index file. This is done only if the keyword
3703 'unique_subject' is set to 'no' in the main CA section (default
3704 if 'CA_default') of the configuration file. The value is saved
3705 with the database itself in a separate index attribute file,
3706 named like the index file with '.attr' appended to the name.
3709 *) X509 verify fixes. Disable broken certificate workarounds when
3710 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
3711 keyUsage extension present. Don't accept CRLs with unhandled critical
3712 extensions: since verify currently doesn't process CRL extensions this
3713 rejects a CRL with *any* critical extensions. Add new verify error codes
3717 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
3718 A clarification of RFC2560 will require the use of OCTET STRINGs and
3719 some implementations cannot handle the current raw format. Since OpenSSL
3720 copies and compares OCSP nonces as opaque blobs without any attempt at
3721 parsing them this should not create any compatibility issues.
3724 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
3725 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
3726 this HMAC (and other) operations are several times slower than OpenSSL
3730 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
3731 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3733 *) Use the correct content when signing type "other".
3736 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
3738 *) Fix various bugs revealed by running the NISCC test suite:
3740 Stop out of bounds reads in the ASN1 code when presented with
3741 invalid tags (CVE-2003-0543 and CVE-2003-0544).
3743 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
3745 If verify callback ignores invalid public key errors don't try to check
3746 certificate signature with the NULL public key.
3750 *) New -ignore_err option in ocsp application to stop the server
3751 exiting on the first error in a request.
3754 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
3755 if the server requested one: as stated in TLS 1.0 and SSL 3.0
3759 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
3760 extra data after the compression methods not only for TLS 1.0
3761 but also for SSL 3.0 (as required by the specification).
3762 [Bodo Moeller; problem pointed out by Matthias Loepfe]
3764 *) Change X509_certificate_type() to mark the key as exported/exportable
3765 when it's 512 *bits* long, not 512 bytes.
3768 *) Change AES_cbc_encrypt() so it outputs exact multiple of
3769 blocks during encryption.
3772 *) Various fixes to base64 BIO and non blocking I/O. On write
3773 flushes were not handled properly if the BIO retried. On read
3774 data was not being buffered properly and had various logic bugs.
3775 This also affects blocking I/O when the data being decoded is a
3779 *) Various S/MIME bugfixes and compatibility changes:
3780 output correct application/pkcs7 MIME type if
3781 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
3782 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
3783 of files as .eml work). Correctly handle very long lines in MIME
3787 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
3789 *) Countermeasure against the Klima-Pokorny-Rosa extension of
3790 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
3791 a protocol version number mismatch like a decryption error
3792 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
3795 *) Turn on RSA blinding by default in the default implementation
3796 to avoid a timing attack. Applications that don't want it can call
3797 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
3798 They would be ill-advised to do so in most cases.
3799 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
3801 *) Change RSA blinding code so that it works when the PRNG is not
3802 seeded (in this case, the secret RSA exponent is abused as
3803 an unpredictable seed -- if it is not unpredictable, there
3804 is no point in blinding anyway). Make RSA blinding thread-safe
3805 by remembering the creator's thread ID in rsa->blinding and
3806 having all other threads use local one-time blinding factors
3807 (this requires more computation than sharing rsa->blinding, but
3808 avoids excessive locking; and if an RSA object is not shared
3809 between threads, blinding will still be very fast).
3812 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
3813 ENGINE as defaults for all supported algorithms irrespective of
3814 the 'flags' parameter. 'flags' is now honoured, so applications
3815 should make sure they are passing it correctly.
3818 *) Target "mingw" now allows native Windows code to be generated in
3819 the Cygwin environment as well as with the MinGW compiler.
3822 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
3824 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
3825 via timing by performing a MAC computation even if incorrrect
3826 block cipher padding has been found. This is a countermeasure
3827 against active attacks where the attacker has to distinguish
3828 between bad padding and a MAC verification error. (CVE-2003-0078)
3830 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
3831 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
3832 Martin Vuagnoux (EPFL, Ilion)]
3834 *) Make the no-err option work as intended. The intention with no-err
3835 is not to have the whole error stack handling routines removed from
3836 libcrypto, it's only intended to remove all the function name and
3837 reason texts, thereby removing some of the footprint that may not
3838 be interesting if those errors aren't displayed anyway.
3840 NOTE: it's still possible for any application or module to have it's
3841 own set of error texts inserted. The routines are there, just not
3842 used by default when no-err is given.
3845 *) Add support for FreeBSD on IA64.
3846 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
3848 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
3849 Kerberos function mit_des_cbc_cksum(). Before this change,
3850 the value returned by DES_cbc_cksum() was like the one from
3851 mit_des_cbc_cksum(), except the bytes were swapped.
3852 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
3854 *) Allow an application to disable the automatic SSL chain building.
3855 Before this a rather primitive chain build was always performed in
3856 ssl3_output_cert_chain(): an application had no way to send the
3857 correct chain if the automatic operation produced an incorrect result.
3859 Now the chain builder is disabled if either:
3861 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
3863 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
3865 The reasoning behind this is that an application would not want the
3866 auto chain building to take place if extra chain certificates are
3867 present and it might also want a means of sending no additional
3868 certificates (for example the chain has two certificates and the
3872 *) Add the possibility to build without the ENGINE framework.
3873 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3875 *) Under Win32 gmtime() can return NULL: check return value in
3876 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
3879 *) DSA routines: under certain error conditions uninitialized BN objects
3880 could be freed. Solution: make sure initialization is performed early
3881 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
3882 Nils Larsch <nla@trustcenter.de> via PR#459)
3885 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
3886 checked on reconnect on the client side, therefore session resumption
3887 could still fail with a "ssl session id is different" error. This
3888 behaviour is masked when SSL_OP_ALL is used due to
3889 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
3890 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3891 followup to PR #377.
3894 *) IA-32 assembler support enhancements: unified ELF targets, support
3895 for SCO/Caldera platforms, fix for Cygwin shared build.
3898 *) Add support for FreeBSD on sparc64. As a consequence, support for
3899 FreeBSD on non-x86 processors is separate from x86 processors on
3900 the config script, much like the NetBSD support.
3901 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
3903 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
3905 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
3908 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
3909 code (06) was taken as the first octet of the session ID and the last
3910 octet was ignored consequently. As a result SSLv2 client side session
3911 caching could not have worked due to the session ID mismatch between
3913 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3917 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
3918 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
3922 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
3923 seems that in spite of existing for more than a year, many application
3924 author have done nothing to provide the necessary callbacks, which
3925 means that this particular engine will not work properly anywhere.
3926 This is a very unfortunate situation which forces us, in the name
3927 of usability, to give the hw_ncipher.c a static lock, which is part
3929 NOTE: This is for the 0.9.7 series ONLY. This hack will never
3930 appear in 0.9.8 or later. We EXPECT application authors to have
3931 dealt properly with this when 0.9.8 is released (unless we actually
3932 make such changes in the libcrypto locking code that changes will
3933 have to be made anyway).
3936 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
3937 octets have been read, EOF or an error occurs. Without this change
3938 some truncated ASN1 structures will not produce an error.
3941 *) Disable Heimdal support, since it hasn't been fully implemented.
3942 Still give the possibility to force the use of Heimdal, but with
3943 warnings and a request that patches get sent to openssl-dev.
3946 *) Add the VC-CE target, introduce the WINCE sysname, and add
3947 INSTALL.WCE and appropriate conditionals to make it build.
3948 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3950 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
3951 cygssl-x.y.z.dll, where x, y and z are the major, minor and
3952 edit numbers of the version.
3953 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
3955 *) Introduce safe string copy and catenation functions
3956 (BUF_strlcpy() and BUF_strlcat()).
3957 [Ben Laurie (CHATS) and Richard Levitte]
3959 *) Avoid using fixed-size buffers for one-line DNs.
3960 [Ben Laurie (CHATS)]
3962 *) Add BUF_MEM_grow_clean() to avoid information leakage when
3963 resizing buffers containing secrets, and use where appropriate.
3964 [Ben Laurie (CHATS)]
3966 *) Avoid using fixed size buffers for configuration file location.
3967 [Ben Laurie (CHATS)]
3969 *) Avoid filename truncation for various CA files.
3970 [Ben Laurie (CHATS)]
3972 *) Use sizeof in preference to magic numbers.
3973 [Ben Laurie (CHATS)]
3975 *) Avoid filename truncation in cert requests.
3976 [Ben Laurie (CHATS)]
3978 *) Add assertions to check for (supposedly impossible) buffer
3980 [Ben Laurie (CHATS)]
3982 *) Don't cache truncated DNS entries in the local cache (this could
3983 potentially lead to a spoofing attack).
3984 [Ben Laurie (CHATS)]
3986 *) Fix various buffers to be large enough for hex/decimal
3987 representations in a platform independent manner.
3988 [Ben Laurie (CHATS)]
3990 *) Add CRYPTO_realloc_clean() to avoid information leakage when
3991 resizing buffers containing secrets, and use where appropriate.
3992 [Ben Laurie (CHATS)]
3994 *) Add BIO_indent() to avoid much slightly worrying code to do
3996 [Ben Laurie (CHATS)]
3998 *) Convert sprintf()/BIO_puts() to BIO_printf().
3999 [Ben Laurie (CHATS)]
4001 *) buffer_gets() could terminate with the buffer only half
4003 [Ben Laurie (CHATS)]
4005 *) Add assertions to prevent user-supplied crypto functions from
4006 overflowing internal buffers by having large block sizes, etc.
4007 [Ben Laurie (CHATS)]
4009 *) New OPENSSL_assert() macro (similar to assert(), but enabled
4011 [Ben Laurie (CHATS)]
4013 *) Eliminate unused copy of key in RC4.
4014 [Ben Laurie (CHATS)]
4016 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
4017 [Ben Laurie (CHATS)]
4019 *) Fix off-by-one error in EGD path.
4020 [Ben Laurie (CHATS)]
4022 *) If RANDFILE path is too long, ignore instead of truncating.
4023 [Ben Laurie (CHATS)]
4025 *) Eliminate unused and incorrectly sized X.509 structure
4027 [Ben Laurie (CHATS)]
4029 *) Eliminate unused and dangerous function knumber().
4030 [Ben Laurie (CHATS)]
4032 *) Eliminate unused and dangerous structure, KSSL_ERR.
4033 [Ben Laurie (CHATS)]
4035 *) Protect against overlong session ID context length in an encoded
4036 session object. Since these are local, this does not appear to be
4038 [Ben Laurie (CHATS)]
4040 *) Change from security patch (see 0.9.6e below) that did not affect
4041 the 0.9.6 release series:
4043 Remote buffer overflow in SSL3 protocol - an attacker could
4044 supply an oversized master key in Kerberos-enabled versions.
4046 [Ben Laurie (CHATS)]
4048 *) Change the SSL kerb5 codes to match RFC 2712.
4051 *) Make -nameopt work fully for req and add -reqopt switch.
4052 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
4054 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
4055 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
4057 *) Make sure tests can be performed even if the corresponding algorithms
4058 have been removed entirely. This was also the last step to make
4059 OpenSSL compilable with DJGPP under all reasonable conditions.
4060 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
4062 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
4063 to allow version independent disabling of normally unselected ciphers,
4064 which may be activated as a side-effect of selecting a single cipher.
4066 (E.g., cipher list string "RSA" enables ciphersuites that are left
4067 out of "ALL" because they do not provide symmetric encryption.
4068 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
4069 [Lutz Jaenicke, Bodo Moeller]
4071 *) Add appropriate support for separate platform-dependent build
4072 directories. The recommended way to make a platform-dependent
4073 build directory is the following (tested on Linux), maybe with
4076 # Place yourself outside of the OpenSSL source tree. In
4077 # this example, the environment variable OPENSSL_SOURCE
4078 # is assumed to contain the absolute OpenSSL source directory.
4079 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
4080 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
4081 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
4082 mkdir -p `dirname $F`
4083 ln -s $OPENSSL_SOURCE/$F $F
4086 To be absolutely sure not to disturb the source tree, a "make clean"
4087 is a good thing. If it isn't successfull, don't worry about it,
4088 it probably means the source directory is very clean.
4091 *) Make sure any ENGINE control commands make local copies of string
4092 pointers passed to them whenever necessary. Otherwise it is possible
4093 the caller may have overwritten (or deallocated) the original string
4094 data when a later ENGINE operation tries to use the stored values.
4095 [Götz Babin-Ebell <babinebell@trustcenter.de>]
4097 *) Improve diagnostics in file reading and command-line digests.
4098 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
4100 *) Add AES modes CFB and OFB to the object database. Correct an
4101 error in AES-CFB decryption.
4104 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
4105 allows existing EVP_CIPHER_CTX structures to be reused after
4106 calling EVP_*Final(). This behaviour is used by encryption
4107 BIOs and some applications. This has the side effect that
4108 applications must explicitly clean up cipher contexts with
4109 EVP_CIPHER_CTX_cleanup() or they will leak memory.
4112 *) Check the values of dna and dnb in bn_mul_recursive before calling
4113 bn_mul_comba (a non zero value means the a or b arrays do not contain
4114 n2 elements) and fallback to bn_mul_normal if either is not zero.
4117 *) Fix escaping of non-ASCII characters when using the -subj option
4118 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
4121 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
4122 form for "surname", serialNumber has no short form.
4123 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
4124 therefore remove "mail" short name for "internet 7".
4125 The OID for unique identifiers in X509 certificates is
4126 x500UniqueIdentifier, not uniqueIdentifier.
4127 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
4130 *) Add an "init" command to the ENGINE config module and auto initialize
4131 ENGINEs. Without any "init" command the ENGINE will be initialized
4132 after all ctrl commands have been executed on it. If init=1 the
4133 ENGINE is initailized at that point (ctrls before that point are run
4134 on the uninitialized ENGINE and after on the initialized one). If
4135 init=0 then the ENGINE will not be iniatialized at all.
4138 *) Fix the 'app_verify_callback' interface so that the user-defined
4139 argument is actually passed to the callback: In the
4140 SSL_CTX_set_cert_verify_callback() prototype, the callback
4141 declaration has been changed from
4144 int (*cb)(X509_STORE_CTX *,void *);
4145 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
4146 i=s->ctx->app_verify_callback(&ctx)
4147 has been changed into
4148 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
4150 To update applications using SSL_CTX_set_cert_verify_callback(),
4151 a dummy argument can be added to their callback functions.
4152 [D. K. Smetters <smetters@parc.xerox.com>]
4154 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
4155 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
4157 *) Add and OPENSSL_LOAD_CONF define which will cause
4158 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
4159 This allows older applications to transparently support certain
4160 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
4161 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
4162 load the config file and OPENSSL_add_all_algorithms_conf() which will
4163 always load it have also been added.
4166 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
4167 Adjust NIDs and EVP layer.
4168 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
4170 *) Config modules support in openssl utility.
4172 Most commands now load modules from the config file,
4173 though in a few (such as version) this isn't done
4174 because it couldn't be used for anything.
4176 In the case of ca and req the config file used is
4177 the same as the utility itself: that is the -config
4178 command line option can be used to specify an
4182 *) Move default behaviour from OPENSSL_config(). If appname is NULL
4183 use "openssl_conf" if filename is NULL use default openssl config file.
4186 *) Add an argument to OPENSSL_config() to allow the use of an alternative
4187 config section name. Add a new flag to tolerate a missing config file
4188 and move code to CONF_modules_load_file().
4191 *) Support for crypto accelerator cards from Accelerated Encryption
4192 Processing, www.aep.ie. (Use engine 'aep')
4193 The support was copied from 0.9.6c [engine] and adapted/corrected
4194 to work with the new engine framework.
4195 [AEP Inc. and Richard Levitte]
4197 *) Support for SureWare crypto accelerator cards from Baltimore
4198 Technologies. (Use engine 'sureware')
4199 The support was copied from 0.9.6c [engine] and adapted
4200 to work with the new engine framework.
4203 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
4204 make the newer ENGINE framework commands for the CHIL engine work.
4205 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
4207 *) Make it possible to produce shared libraries on ReliantUNIX.
4208 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
4210 *) Add the configuration target debug-linux-ppro.
4211 Make 'openssl rsa' use the general key loading routines
4212 implemented in apps.c, and make those routines able to
4213 handle the key format FORMAT_NETSCAPE and the variant
4215 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
4217 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
4218 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
4220 *) Add -keyform to rsautl, and document -engine.
4221 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
4223 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
4224 BIO_R_NO_SUCH_FILE error code rather than the generic
4225 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
4228 *) Add new functions
4230 ERR_peek_last_error_line
4231 ERR_peek_last_error_line_data.
4232 These are similar to
4235 ERR_peek_error_line_data,
4236 but report on the latest error recorded rather than the first one
4237 still in the error queue.
4238 [Ben Laurie, Bodo Moeller]
4240 *) default_algorithms option in ENGINE config module. This allows things
4242 default_algorithms = ALL
4243 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
4246 *) Prelminary ENGINE config module.
4249 *) New experimental application configuration code.
4252 *) Change the AES code to follow the same name structure as all other
4253 symmetric ciphers, and behave the same way. Move everything to
4254 the directory crypto/aes, thereby obsoleting crypto/rijndael.
4255 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
4257 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
4258 [Ben Laurie and Theo de Raadt]
4260 *) Add option to output public keys in req command.
4261 [Massimiliano Pala madwolf@openca.org]
4263 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
4264 (up to about 10% better than before for P-192 and P-224).
4267 *) New functions/macros
4269 SSL_CTX_set_msg_callback(ctx, cb)
4270 SSL_CTX_set_msg_callback_arg(ctx, arg)
4271 SSL_set_msg_callback(ssl, cb)
4272 SSL_set_msg_callback_arg(ssl, arg)
4274 to request calling a callback function
4276 void cb(int write_p, int version, int content_type,
4277 const void *buf, size_t len, SSL *ssl, void *arg)
4279 whenever a protocol message has been completely received
4280 (write_p == 0) or sent (write_p == 1). Here 'version' is the
4281 protocol version according to which the SSL library interprets
4282 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
4283 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
4284 the content type as defined in the SSL 3.0/TLS 1.0 protocol
4285 specification (change_cipher_spec(20), alert(21), handshake(22)).
4286 'buf' and 'len' point to the actual message, 'ssl' to the
4287 SSL object, and 'arg' is the application-defined value set by
4288 SSL[_CTX]_set_msg_callback_arg().
4290 'openssl s_client' and 'openssl s_server' have new '-msg' options
4291 to enable a callback that displays all protocol messages.
4294 *) Change the shared library support so shared libraries are built as
4295 soon as the corresponding static library is finished, and thereby get
4296 openssl and the test programs linked against the shared library.
4297 This still only happens when the keyword "shard" has been given to
4298 the configuration scripts.
4300 NOTE: shared library support is still an experimental thing, and
4301 backward binary compatibility is still not guaranteed.
4302 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
4304 *) Add support for Subject Information Access extension.
4305 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
4307 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
4308 additional bytes when new memory had to be allocated, not just
4309 when reusing an existing buffer.
4312 *) New command line and configuration option 'utf8' for the req command.
4313 This allows field values to be specified as UTF8 strings.
4316 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
4317 runs for the former and machine-readable output for the latter.
4320 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
4321 of the e-mail address in the DN (i.e., it will go into a certificate
4322 extension only). The new configuration file option 'email_in_dn = no'
4323 has the same effect.
4324 [Massimiliano Pala madwolf@openca.org]
4326 *) Change all functions with names starting with des_ to be starting
4327 with DES_ instead. Add wrappers that are compatible with libdes,
4328 but are named _ossl_old_des_*. Finally, add macros that map the
4329 des_* symbols to the corresponding _ossl_old_des_* if libdes
4330 compatibility is desired. If OpenSSL 0.9.6c compatibility is
4331 desired, the des_* symbols will be mapped to DES_*, with one
4334 Since we provide two compatibility mappings, the user needs to
4335 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
4336 compatibility is desired. The default (i.e., when that macro
4337 isn't defined) is OpenSSL 0.9.6c compatibility.
4339 There are also macros that enable and disable the support of old
4340 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
4341 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
4342 are defined, the default will apply: to support the old des routines.
4344 In either case, one must include openssl/des.h to get the correct
4345 definitions. Do not try to just include openssl/des_old.h, that
4348 NOTE: This is a major break of an old API into a new one. Software
4349 authors are encouraged to switch to the DES_ style functions. Some
4350 time in the future, des_old.h and the libdes compatibility functions
4351 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
4352 default), and then completely removed.
4355 *) Test for certificates which contain unsupported critical extensions.
4356 If such a certificate is found during a verify operation it is
4357 rejected by default: this behaviour can be overridden by either
4358 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
4359 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
4360 X509_supported_extension() has also been added which returns 1 if a
4361 particular extension is supported.
4364 *) Modify the behaviour of EVP cipher functions in similar way to digests
4365 to retain compatibility with existing code.
4368 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
4369 compatibility with existing code. In particular the 'ctx' parameter does
4370 not have to be to be initialized before the call to EVP_DigestInit() and
4371 it is tidied up after a call to EVP_DigestFinal(). New function
4372 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
4373 EVP_MD_CTX_copy() changed to not require the destination to be
4374 initialized valid and new function EVP_MD_CTX_copy_ex() added which
4375 requires the destination to be valid.
4377 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
4378 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
4381 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
4382 so that complete 'Handshake' protocol structures are kept in memory
4383 instead of overwriting 'msg_type' and 'length' with 'body' data.
4386 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
4387 [Massimo Santin via Richard Levitte]
4389 *) Major restructuring to the underlying ENGINE code. This includes
4390 reduction of linker bloat, separation of pure "ENGINE" manipulation
4391 (initialisation, etc) from functionality dealing with implementations
4392 of specific crypto iterfaces. This change also introduces integrated
4393 support for symmetric ciphers and digest implementations - so ENGINEs
4394 can now accelerate these by providing EVP_CIPHER and EVP_MD
4395 implementations of their own. This is detailed in crypto/engine/README
4396 as it couldn't be adequately described here. However, there are a few
4397 API changes worth noting - some RSA, DSA, DH, and RAND functions that
4398 were changed in the original introduction of ENGINE code have now
4399 reverted back - the hooking from this code to ENGINE is now a good
4400 deal more passive and at run-time, operations deal directly with
4401 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
4402 dereferencing through an ENGINE pointer any more. Also, the ENGINE
4403 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
4404 they were not being used by the framework as there is no concept of a
4405 BIGNUM_METHOD and they could not be generalised to the new
4406 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
4407 ENGINE_cpy() has been removed as it cannot be consistently defined in
4411 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
4414 *) Change mkdef.pl to sort symbols that get the same entry number,
4415 and make sure the automatically generated functions ERR_load_*
4416 become part of libeay.num as well.
4419 *) New function SSL_renegotiate_pending(). This returns true once
4420 renegotiation has been requested (either SSL_renegotiate() call
4421 or HelloRequest/ClientHello receveived from the peer) and becomes
4422 false once a handshake has been completed.
4423 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
4424 sends a HelloRequest, but does not ensure that a handshake takes
4425 place. SSL_renegotiate_pending() is useful for checking if the
4426 client has followed the request.)
4429 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
4430 By default, clients may request session resumption even during
4431 renegotiation (if session ID contexts permit); with this option,
4432 session resumption is possible only in the first handshake.
4434 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
4435 more bits available for options that should not be part of
4436 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
4439 *) Add some demos for certificate and certificate request creation.
4442 *) Make maximum certificate chain size accepted from the peer application
4443 settable (SSL*_get/set_max_cert_list()), as proposed by
4444 "Douglas E. Engert" <deengert@anl.gov>.
4447 *) Add support for shared libraries for Unixware-7
4448 (Boyd Lynn Gerber <gerberb@zenez.com>).
4451 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
4452 be done prior to destruction. Use this to unload error strings from
4453 ENGINEs that load their own error strings. NB: This adds two new API
4454 functions to "get" and "set" this destroy handler in an ENGINE.
4457 *) Alter all existing ENGINE implementations (except "openssl" and
4458 "openbsd") to dynamically instantiate their own error strings. This
4459 makes them more flexible to be built both as statically-linked ENGINEs
4460 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
4461 Also, add stub code to each that makes building them as self-contained
4462 shared-libraries easier (see README.ENGINE).
4465 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
4466 implementations into applications that are completely implemented in
4467 self-contained shared-libraries. The "dynamic" ENGINE exposes control
4468 commands that can be used to configure what shared-library to load and
4469 to control aspects of the way it is handled. Also, made an update to
4470 the README.ENGINE file that brings its information up-to-date and
4471 provides some information and instructions on the "dynamic" ENGINE
4472 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
4475 *) Make it possible to unload ranges of ERR strings with a new
4476 "ERR_unload_strings" function.
4479 *) Add a copy() function to EVP_MD.
4482 *) Make EVP_MD routines take a context pointer instead of just the
4483 md_data void pointer.
4486 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
4487 that the digest can only process a single chunk of data
4488 (typically because it is provided by a piece of
4489 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
4490 is only going to provide a single chunk of data, and hence the
4491 framework needn't accumulate the data for oneshot drivers.
4494 *) As with "ERR", make it possible to replace the underlying "ex_data"
4495 functions. This change also alters the storage and management of global
4496 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
4497 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
4498 index counters. The API functions that use this state have been changed
4499 to take a "class_index" rather than pointers to the class's local STACK
4500 and counter, and there is now an API function to dynamically create new
4501 classes. This centralisation allows us to (a) plug a lot of the
4502 thread-safety problems that existed, and (b) makes it possible to clean
4503 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
4504 such data would previously have always leaked in application code and
4505 workarounds were in place to make the memory debugging turn a blind eye
4506 to it. Application code that doesn't use this new function will still
4507 leak as before, but their memory debugging output will announce it now
4508 rather than letting it slide.
4510 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
4511 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
4512 has a return value to indicate success or failure.
4515 *) Make it possible to replace the underlying "ERR" functions such that the
4516 global state (2 LHASH tables and 2 locks) is only used by the "default"
4517 implementation. This change also adds two functions to "get" and "set"
4518 the implementation prior to it being automatically set the first time
4519 any other ERR function takes place. Ie. an application can call "get",
4520 pass the return value to a module it has just loaded, and that module
4521 can call its own "set" function using that value. This means the
4522 module's "ERR" operations will use (and modify) the error state in the
4523 application and not in its own statically linked copy of OpenSSL code.
4526 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
4527 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
4528 the operation, and provides a more encapsulated way for external code
4529 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
4530 to use these functions rather than manually incrementing the counts.
4532 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
4535 *) Add EVP test program.
4538 *) Add symmetric cipher support to ENGINE. Expect the API to change!
4541 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
4542 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
4543 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
4544 These allow a CRL to be built without having to access X509_CRL fields
4545 directly. Modify 'ca' application to use new functions.
4548 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
4549 bug workarounds. Rollback attack detection is a security feature.
4550 The problem will only arise on OpenSSL servers when TLSv1 is not
4551 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
4552 Software authors not wanting to support TLSv1 will have special reasons
4553 for their choice and can explicitly enable this option.
4554 [Bodo Moeller, Lutz Jaenicke]
4556 *) Rationalise EVP so it can be extended: don't include a union of
4557 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
4558 (similar to those existing for EVP_CIPHER_CTX).
4563 EVP_MD_CTX_init(&md); /* new function call */
4564 EVP_DigestInit(&md, EVP_sha1());
4565 EVP_DigestUpdate(&md, in, len);
4566 EVP_DigestFinal(&md, out, NULL);
4567 EVP_MD_CTX_cleanup(&md); /* new function call */
4571 *) Make DES key schedule conform to the usual scheme, as well as
4572 correcting its structure. This means that calls to DES functions
4573 now have to pass a pointer to a des_key_schedule instead of a
4574 plain des_key_schedule (which was actually always a pointer
4577 des_key_schedule ks;
4579 des_set_key_checked(..., &ks);
4580 des_ncbc_encrypt(..., &ks, ...);
4582 (Note that a later change renames 'des_...' into 'DES_...'.)
4585 *) Initial reduction of linker bloat: the use of some functions, such as
4586 PEM causes large amounts of unused functions to be linked in due to
4587 poor organisation. For example pem_all.c contains every PEM function
4588 which has a knock on effect of linking in large amounts of (unused)
4589 ASN1 code. Grouping together similar functions and splitting unrelated
4590 functions prevents this.
4593 *) Cleanup of EVP macros.
4596 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
4597 correct _ecb suffix.
4600 *) Add initial OCSP responder support to ocsp application. The
4601 revocation information is handled using the text based index
4602 use by the ca application. The responder can either handle
4603 requests generated internally, supplied in files (for example
4604 via a CGI script) or using an internal minimal server.
4607 *) Add configuration choices to get zlib compression for TLS.
4610 *) Changes to Kerberos SSL for RFC 2712 compliance:
4611 1. Implemented real KerberosWrapper, instead of just using
4612 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
4613 2. Implemented optional authenticator field of KerberosWrapper.
4615 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
4616 and authenticator structs; see crypto/krb5/.
4618 Generalized Kerberos calls to support multiple Kerberos libraries.
4619 [Vern Staats <staatsvr@asc.hpc.mil>,
4620 Jeffrey Altman <jaltman@columbia.edu>
4621 via Richard Levitte]
4623 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
4624 already does with RSA. testdsa.h now has 'priv_key/pub_key'
4625 values for each of the key sizes rather than having just
4626 parameters (and 'speed' generating keys each time).
4629 *) Speed up EVP routines.
4632 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
4633 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
4634 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
4635 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
4637 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
4638 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
4639 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
4642 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
4644 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
4647 *) Added the OS2-EMX target.
4648 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
4650 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
4651 to support NCONF routines in extension code. New function CONF_set_nconf()
4652 to allow functions which take an NCONF to also handle the old LHASH
4653 structure: this means that the old CONF compatible routines can be
4654 retained (in particular wrt extensions) without having to duplicate the
4655 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
4658 *) Enhance the general user interface with mechanisms for inner control
4659 and with possibilities to have yes/no kind of prompts.
4662 *) Change all calls to low level digest routines in the library and
4663 applications to use EVP. Add missing calls to HMAC_cleanup() and
4664 don't assume HMAC_CTX can be copied using memcpy().
4665 [Verdon Walker <VWalker@novell.com>, Steve Henson]
4667 *) Add the possibility to control engines through control names but with
4668 arbitrary arguments instead of just a string.
4669 Change the key loaders to take a UI_METHOD instead of a callback
4670 function pointer. NOTE: this breaks binary compatibility with earlier
4671 versions of OpenSSL [engine].
4672 Adapt the nCipher code for these new conditions and add a card insertion
4676 *) Enhance the general user interface with mechanisms to better support
4677 dialog box interfaces, application-defined prompts, the possibility
4678 to use defaults (for example default passwords from somewhere else)
4679 and interrupts/cancellations.
4682 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
4683 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
4686 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
4687 tidy up some unnecessarily weird code in 'sk_new()').
4688 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
4690 *) Change the key loading routines for ENGINEs to use the same kind
4691 callback (pem_password_cb) as all other routines that need this
4695 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
4696 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
4697 than this minimum value is recommended.
4700 *) New random seeder for OpenVMS, using the system process statistics
4701 that are easily reachable.
4704 *) Windows apparently can't transparently handle global
4705 variables defined in DLLs. Initialisations such as:
4707 const ASN1_ITEM *it = &ASN1_INTEGER_it;
4709 wont compile. This is used by the any applications that need to
4710 declare their own ASN1 modules. This was fixed by adding the option
4711 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
4712 needed for static libraries under Win32.
4715 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
4716 setting of purpose and trust fields. New X509_STORE trust and
4717 purpose functions and tidy up setting in other SSL functions.
4720 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
4721 structure. These are inherited by X509_STORE_CTX when it is
4722 initialised. This allows various defaults to be set in the
4723 X509_STORE structure (such as flags for CRL checking and custom
4724 purpose or trust settings) for functions which only use X509_STORE_CTX
4725 internally such as S/MIME.
4727 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
4728 trust settings if they are not set in X509_STORE. This allows X509_STORE
4729 purposes and trust (in S/MIME for example) to override any set by default.
4731 Add command line options for CRL checking to smime, s_client and s_server
4735 *) Initial CRL based revocation checking. If the CRL checking flag(s)
4736 are set then the CRL is looked up in the X509_STORE structure and
4737 its validity and signature checked, then if the certificate is found
4738 in the CRL the verify fails with a revoked error.
4740 Various new CRL related callbacks added to X509_STORE_CTX structure.
4742 Command line options added to 'verify' application to support this.
4744 This needs some additional work, such as being able to handle multiple
4745 CRLs with different times, extension based lookup (rather than just
4746 by subject name) and ultimately more complete V2 CRL extension
4750 *) Add a general user interface API (crypto/ui/). This is designed
4751 to replace things like des_read_password and friends (backward
4752 compatibility functions using this new API are provided).
4753 The purpose is to remove prompting functions from the DES code
4754 section as well as provide for prompting through dialog boxes in
4755 a window system and the like.
4758 *) Add "ex_data" support to ENGINE so implementations can add state at a
4759 per-structure level rather than having to store it globally.
4762 *) Make it possible for ENGINE structures to be copied when retrieved by
4763 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
4764 This causes the "original" ENGINE structure to act like a template,
4765 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
4766 operational state can be localised to each ENGINE structure, despite the
4767 fact they all share the same "methods". New ENGINE structures returned in
4768 this case have no functional references and the return value is the single
4769 structural reference. This matches the single structural reference returned
4770 by ENGINE_by_id() normally, when it is incremented on the pre-existing
4774 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
4775 needs to match any other type at all we need to manually clear the
4779 *) Changes to the "openssl engine" utility to include;
4780 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
4781 about an ENGINE's available control commands.
4782 - executing control commands from command line arguments using the
4783 '-pre' and '-post' switches. '-post' is only used if '-t' is
4784 specified and the ENGINE is successfully initialised. The syntax for
4785 the individual commands are colon-separated, for example;
4786 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
4789 *) New dynamic control command support for ENGINEs. ENGINEs can now
4790 declare their own commands (numbers), names (strings), descriptions,
4791 and input types for run-time discovery by calling applications. A
4792 subset of these commands are implicitly classed as "executable"
4793 depending on their input type, and only these can be invoked through
4794 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
4795 can be based on user input, config files, etc). The distinction is
4796 that "executable" commands cannot return anything other than a boolean
4797 result and can only support numeric or string input, whereas some
4798 discoverable commands may only be for direct use through
4799 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
4800 pointers, or other custom uses. The "executable" commands are to
4801 support parameterisations of ENGINE behaviour that can be
4802 unambiguously defined by ENGINEs and used consistently across any
4803 OpenSSL-based application. Commands have been added to all the
4804 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
4805 control over shared-library paths without source code alterations.
4808 *) Changed all ENGINE implementations to dynamically allocate their
4809 ENGINEs rather than declaring them statically. Apart from this being
4810 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
4811 this also allows the implementations to compile without using the
4812 internal engine_int.h header.
4815 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
4816 'const' value. Any code that should be able to modify a RAND_METHOD
4817 should already have non-const pointers to it (ie. they should only
4818 modify their own ones).
4821 *) Made a variety of little tweaks to the ENGINE code.
4822 - "atalla" and "ubsec" string definitions were moved from header files
4823 to C code. "nuron" string definitions were placed in variables
4824 rather than hard-coded - allowing parameterisation of these values
4825 later on via ctrl() commands.
4826 - Removed unused "#if 0"'d code.
4827 - Fixed engine list iteration code so it uses ENGINE_free() to release
4828 structural references.
4829 - Constified the RAND_METHOD element of ENGINE structures.
4830 - Constified various get/set functions as appropriate and added
4831 missing functions (including a catch-all ENGINE_cpy that duplicates
4832 all ENGINE values onto a new ENGINE except reference counts/state).
4833 - Removed NULL parameter checks in get/set functions. Setting a method
4834 or function to NULL is a way of cancelling out a previously set
4835 value. Passing a NULL ENGINE parameter is just plain stupid anyway
4836 and doesn't justify the extra error symbols and code.
4837 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
4838 flags from engine_int.h to engine.h.
4839 - Changed prototypes for ENGINE handler functions (init(), finish(),
4840 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
4843 *) Implement binary inversion algorithm for BN_mod_inverse in addition
4844 to the algorithm using long division. The binary algorithm can be
4845 used only if the modulus is odd. On 32-bit systems, it is faster
4846 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
4847 roughly 5-15% for 256-bit moduli), so we use it only for moduli
4848 up to 450 bits. In 64-bit environments, the binary algorithm
4849 appears to be advantageous for much longer moduli; here we use it
4850 for moduli up to 2048 bits.
4853 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
4854 could not support the combine flag in choice fields.
4857 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
4858 extensions from a certificate request to the certificate.
4861 *) Allow multiple 'certopt' and 'nameopt' options to be separated
4862 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
4863 file: this allows the display of the certificate about to be
4864 signed to be customised, to allow certain fields to be included
4865 or excluded and extension details. The old system didn't display
4866 multicharacter strings properly, omitted fields not in the policy
4867 and couldn't display additional details such as extensions.
4870 *) Function EC_POINTs_mul for multiple scalar multiplication
4871 of an arbitrary number of elliptic curve points
4872 \sum scalars[i]*points[i],
4873 optionally including the generator defined for the EC_GROUP:
4874 scalar*generator + \sum scalars[i]*points[i].
4876 EC_POINT_mul is a simple wrapper function for the typical case
4877 that the point list has just one item (besides the optional
4881 *) First EC_METHODs for curves over GF(p):
4883 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
4884 operations and provides various method functions that can also
4885 operate with faster implementations of modular arithmetic.
4887 EC_GFp_mont_method() reuses most functions that are part of
4888 EC_GFp_simple_method, but uses Montgomery arithmetic.
4890 [Bodo Moeller; point addition and point doubling
4891 implementation directly derived from source code provided by
4892 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
4894 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
4895 crypto/ec/ec_lib.c):
4897 Curves are EC_GROUP objects (with an optional group generator)
4898 based on EC_METHODs that are built into the library.
4900 Points are EC_POINT objects based on EC_GROUP objects.
4902 Most of the framework would be able to handle curves over arbitrary
4903 finite fields, but as there are no obvious types for fields other
4904 than GF(p), some functions are limited to that for now.
4907 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
4908 that the file contains a complete HTTP response.
4911 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
4912 change the def and num file printf format specifier from "%-40sXXX"
4913 to "%-39s XXX". The latter will always guarantee a space after the
4914 field while the former will cause them to run together if the field
4915 is 40 of more characters long.
4918 *) Constify the cipher and digest 'method' functions and structures
4919 and modify related functions to take constant EVP_MD and EVP_CIPHER
4923 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
4924 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
4927 *) Modify EVP_Digest*() routines so they now return values. Although the
4928 internal software routines can never fail additional hardware versions
4932 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
4934 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
4935 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
4938 ERR_R_NESTED_ASN1_ERROR
4940 ERR_R_MISSING_ASN1_EOS
4941 were 4 .. 9, conflicting with
4942 ERR_LIB_RSA (= ERR_R_RSA_LIB)
4944 ERR_LIB_PEM (= ERR_R_PEM_LIB).
4945 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
4947 Add new error code 'ERR_R_INTERNAL_ERROR'.
4950 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
4954 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
4955 sets the subject name for a new request or supersedes the
4956 subject name in a given request. Formats that can be parsed are
4957 'CN=Some Name, OU=myOU, C=IT'
4959 'CN=Some Name/OU=myOU/C=IT'.
4961 Add options '-batch' and '-verbose' to 'openssl req'.
4962 [Massimiliano Pala <madwolf@hackmasters.net>]
4964 *) Introduce the possibility to access global variables through
4965 functions on platform were that's the best way to handle exporting
4966 global variables in shared libraries. To enable this functionality,
4967 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
4968 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
4969 is normally done by Configure or something similar).
4971 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
4972 in the source file (foo.c) like this:
4974 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
4975 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
4977 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
4978 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
4980 OPENSSL_DECLARE_GLOBAL(int,foo);
4981 #define foo OPENSSL_GLOBAL_REF(foo)
4982 OPENSSL_DECLARE_GLOBAL(double,bar);
4983 #define bar OPENSSL_GLOBAL_REF(bar)
4985 The #defines are very important, and therefore so is including the
4986 header file everywhere where the defined globals are used.
4988 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
4989 of ASN.1 items, but that structure is a bit different.
4991 The largest change is in util/mkdef.pl which has been enhanced with
4992 better and easier to understand logic to choose which symbols should
4993 go into the Windows .def files as well as a number of fixes and code
4994 cleanup (among others, algorithm keywords are now sorted
4995 lexicographically to avoid constant rewrites).
4998 *) In BN_div() keep a copy of the sign of 'num' before writing the
4999 result to 'rm' because if rm==num the value will be overwritten
5000 and produce the wrong result if 'num' is negative: this caused
5001 problems with BN_mod() and BN_nnmod().
5004 *) Function OCSP_request_verify(). This checks the signature on an
5005 OCSP request and verifies the signer certificate. The signer
5006 certificate is just checked for a generic purpose and OCSP request
5010 *) Add OCSP_check_validity() function to check the validity of OCSP
5011 responses. OCSP responses are prepared in real time and may only
5012 be a few seconds old. Simply checking that the current time lies
5013 between thisUpdate and nextUpdate max reject otherwise valid responses
5014 caused by either OCSP responder or client clock inaccuracy. Instead
5015 we allow thisUpdate and nextUpdate to fall within a certain period of
5016 the current time. The age of the response can also optionally be
5017 checked. Two new options -validity_period and -status_age added to
5021 *) If signature or public key algorithm is unrecognized print out its
5022 OID rather that just UNKNOWN.
5025 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
5026 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
5027 ID to be generated from the issuer certificate alone which can then be
5028 passed to OCSP_id_issuer_cmp().
5031 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
5032 ASN1 modules to export functions returning ASN1_ITEM pointers
5033 instead of the ASN1_ITEM structures themselves. This adds several
5034 new macros which allow the underlying ASN1 function/structure to
5035 be accessed transparently. As a result code should not use ASN1_ITEM
5036 references directly (such as &X509_it) but instead use the relevant
5037 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
5038 use of the new ASN1 code on platforms where exporting structures
5039 is problematical (for example in shared libraries) but exporting
5040 functions returning pointers to structures is not.
5043 *) Add support for overriding the generation of SSL/TLS session IDs.
5044 These callbacks can be registered either in an SSL_CTX or per SSL.
5045 The purpose of this is to allow applications to control, if they wish,
5046 the arbitrary values chosen for use as session IDs, particularly as it
5047 can be useful for session caching in multiple-server environments. A
5048 command-line switch for testing this (and any client code that wishes
5049 to use such a feature) has been added to "s_server".
5050 [Geoff Thorpe, Lutz Jaenicke]
5052 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
5053 of the form '#if defined(...) || defined(...) || ...' and
5054 '#if !defined(...) && !defined(...) && ...'. This also avoids
5055 the growing number of special cases it was previously handling.
5058 *) Make all configuration macros available for application by making
5059 sure they are available in opensslconf.h, by giving them names starting
5060 with "OPENSSL_" to avoid conflicts with other packages and by making
5061 sure e_os2.h will cover all platform-specific cases together with
5063 Additionally, it is now possible to define configuration/platform-
5064 specific names (called "system identities"). In the C code, these
5065 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
5066 macro with the name beginning with "OPENSSL_SYS_", which is determined
5067 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
5071 *) New option -set_serial to 'req' and 'x509' this allows the serial
5072 number to use to be specified on the command line. Previously self
5073 signed certificates were hard coded with serial number 0 and the
5074 CA options of 'x509' had to use a serial number in a file which was
5078 *) New options to 'ca' utility to support V2 CRL entry extensions.
5079 Currently CRL reason, invalidity date and hold instruction are
5080 supported. Add new CRL extensions to V3 code and some new objects.
5083 *) New function EVP_CIPHER_CTX_set_padding() this is used to
5084 disable standard block padding (aka PKCS#5 padding) in the EVP
5085 API, which was previously mandatory. This means that the data is
5086 not padded in any way and so the total length much be a multiple
5087 of the block size, otherwise an error occurs.
5090 *) Initial (incomplete) OCSP SSL support.
5093 *) New function OCSP_parse_url(). This splits up a URL into its host,
5094 port and path components: primarily to parse OCSP URLs. New -url
5095 option to ocsp utility.
5098 *) New nonce behavior. The return value of OCSP_check_nonce() now
5099 reflects the various checks performed. Applications can decide
5100 whether to tolerate certain situations such as an absent nonce
5101 in a response when one was present in a request: the ocsp application
5102 just prints out a warning. New function OCSP_add1_basic_nonce()
5103 this is to allow responders to include a nonce in a response even if
5104 the request is nonce-less.
5107 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
5108 skipped when using openssl x509 multiple times on a single input file,
5109 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
5112 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
5113 set string type: to handle setting ASN1_TIME structures. Fix ca
5114 utility to correctly initialize revocation date of CRLs.
5117 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
5118 the clients preferred ciphersuites and rather use its own preferences.
5119 Should help to work around M$ SGC (Server Gated Cryptography) bug in
5120 Internet Explorer by ensuring unchanged hash method during stepup.
5121 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
5124 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
5125 to aes and add a new 'exist' option to print out symbols that don't
5129 *) Additional options to ocsp utility to allow flags to be set and
5130 additional certificates supplied.
5133 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
5134 OCSP client a number of certificate to only verify the response
5138 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
5139 handle the new API. Currently only ECB, CBC modes supported. Add new
5142 Add TLS AES ciphersuites as described in RFC3268, "Advanced
5143 Encryption Standard (AES) Ciphersuites for Transport Layer
5144 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
5145 not enabled by default and were not part of the "ALL" ciphersuite
5146 alias because they were not yet official; they could be
5147 explicitly requested by specifying the "AESdraft" ciphersuite
5148 group alias. In the final release of OpenSSL 0.9.7, the group
5149 alias is called "AES" and is part of "ALL".)
5150 [Ben Laurie, Steve Henson, Bodo Moeller]
5152 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
5153 request to response.
5156 *) Functions for OCSP responders. OCSP_request_onereq_count(),
5157 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
5158 extract information from a certificate request. OCSP_response_create()
5159 creates a response and optionally adds a basic response structure.
5160 OCSP_basic_add1_status() adds a complete single response to a basic
5161 response and returns the OCSP_SINGLERESP structure just added (to allow
5162 extensions to be included for example). OCSP_basic_add1_cert() adds a
5163 certificate to a basic response and OCSP_basic_sign() signs a basic
5164 response with various flags. New helper functions ASN1_TIME_check()
5165 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
5166 (converts ASN1_TIME to GeneralizedTime).
5169 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
5170 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
5171 structure from a certificate. X509_pubkey_digest() digests the public_key
5172 contents: this is used in various key identifiers.
5175 *) Make sk_sort() tolerate a NULL argument.
5176 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
5178 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
5179 passed by the function are trusted implicitly. If any of them signed the
5180 response then it is assumed to be valid and is not verified.
5183 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
5184 to data. This was previously part of the PKCS7 ASN1 code. This
5185 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
5186 [Steve Henson, reported by Kenneth R. Robinette
5187 <support@securenetterm.com>]
5189 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
5190 routines: without these tracing memory leaks is very painful.
5191 Fix leaks in PKCS12 and PKCS7 routines.
5194 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
5195 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
5196 effectively meant GeneralizedTime would never be used. Now it
5197 is initialised to -1 but X509_time_adj() now has to check the value
5198 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
5199 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
5200 [Steve Henson, reported by Kenneth R. Robinette
5201 <support@securenetterm.com>]
5203 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
5204 result in a zero length in the ASN1_INTEGER structure which was
5205 not consistent with the structure when d2i_ASN1_INTEGER() was used
5206 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
5207 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
5208 where it did not print out a minus for negative ASN1_INTEGER.
5211 *) Add summary printout to ocsp utility. The various functions which
5212 convert status values to strings have been renamed to:
5213 OCSP_response_status_str(), OCSP_cert_status_str() and
5214 OCSP_crl_reason_str() and are no longer static. New options
5215 to verify nonce values and to disable verification. OCSP response
5216 printout format cleaned up.
5219 *) Add additional OCSP certificate checks. These are those specified
5220 in RFC2560. This consists of two separate checks: the CA of the
5221 certificate being checked must either be the OCSP signer certificate
5222 or the issuer of the OCSP signer certificate. In the latter case the
5223 OCSP signer certificate must contain the OCSP signing extended key
5224 usage. This check is performed by attempting to match the OCSP
5225 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
5226 in the OCSP_CERTID structures of the response.
5229 *) Initial OCSP certificate verification added to OCSP_basic_verify()
5230 and related routines. This uses the standard OpenSSL certificate
5231 verify routines to perform initial checks (just CA validity) and
5232 to obtain the certificate chain. Then additional checks will be
5233 performed on the chain. Currently the root CA is checked to see
5234 if it is explicitly trusted for OCSP signing. This is used to set
5235 a root CA as a global signing root: that is any certificate that
5236 chains to that CA is an acceptable OCSP signing certificate.
5239 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
5240 extensions from a separate configuration file.
5241 As when reading extensions from the main configuration file,
5242 the '-extensions ...' option may be used for specifying the
5244 [Massimiliano Pala <madwolf@comune.modena.it>]
5246 *) New OCSP utility. Allows OCSP requests to be generated or
5247 read. The request can be sent to a responder and the output
5248 parsed, outputed or printed in text form. Not complete yet:
5249 still needs to check the OCSP response validity.
5252 *) New subcommands for 'openssl ca':
5253 'openssl ca -status <serial>' prints the status of the cert with
5254 the given serial number (according to the index file).
5255 'openssl ca -updatedb' updates the expiry status of certificates
5257 [Massimiliano Pala <madwolf@comune.modena.it>]
5259 *) New '-newreq-nodes' command option to CA.pl. This is like
5260 '-newreq', but calls 'openssl req' with the '-nodes' option
5261 so that the resulting key is not encrypted.
5262 [Damien Miller <djm@mindrot.org>]
5264 *) New configuration for the GNU Hurd.
5265 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
5267 *) Initial code to implement OCSP basic response verify. This
5268 is currently incomplete. Currently just finds the signer's
5269 certificate and verifies the signature on the response.
5272 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
5273 value of OPENSSLDIR. This is available via the new '-d' option
5274 to 'openssl version', and is also included in 'openssl version -a'.
5277 *) Allowing defining memory allocation callbacks that will be given
5278 file name and line number information in additional arguments
5279 (a const char* and an int). The basic functionality remains, as
5280 well as the original possibility to just replace malloc(),
5281 realloc() and free() by functions that do not know about these
5282 additional arguments. To register and find out the current
5283 settings for extended allocation functions, the following
5284 functions are provided:
5286 CRYPTO_set_mem_ex_functions
5287 CRYPTO_set_locked_mem_ex_functions
5288 CRYPTO_get_mem_ex_functions
5289 CRYPTO_get_locked_mem_ex_functions
5291 These work the same way as CRYPTO_set_mem_functions and friends.
5292 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
5293 extended allocation function is enabled.
5294 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
5295 a conventional allocation function is enabled.
5296 [Richard Levitte, Bodo Moeller]
5298 *) Finish off removing the remaining LHASH function pointer casts.
5299 There should no longer be any prototype-casting required when using
5300 the LHASH abstraction, and any casts that remain are "bugs". See
5301 the callback types and macros at the head of lhash.h for details
5302 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
5305 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
5306 If /dev/[u]random devices are not available or do not return enough
5307 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
5309 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
5310 /etc/entropy will be queried once each in this sequence, quering stops
5311 when enough entropy was collected without querying more sockets.
5314 *) Change the Unix RAND_poll() variant to be able to poll several
5315 random devices, as specified by DEVRANDOM, until a sufficient amount
5316 of data has been collected. We spend at most 10 ms on each file
5317 (select timeout) and read in non-blocking mode. DEVRANDOM now
5318 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
5319 (previously it was just the string "/dev/urandom"), so on typical
5320 platforms the 10 ms delay will never occur.
5321 Also separate out the Unix variant to its own file, rand_unix.c.
5322 For VMS, there's a currently-empty rand_vms.c.
5325 *) Move OCSP client related routines to ocsp_cl.c. These
5326 provide utility functions which an application needing
5327 to issue a request to an OCSP responder and analyse the
5328 response will typically need: as opposed to those which an
5329 OCSP responder itself would need which will be added later.
5331 OCSP_request_sign() signs an OCSP request with an API similar
5332 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
5333 response. OCSP_response_get1_basic() extracts basic response
5334 from response. OCSP_resp_find_status(): finds and extracts status
5335 information from an OCSP_CERTID structure (which will be created
5336 when the request structure is built). These are built from lower
5337 level functions which work on OCSP_SINGLERESP structures but
5338 wont normally be used unless the application wishes to examine
5339 extensions in the OCSP response for example.
5341 Replace nonce routines with a pair of functions.
5342 OCSP_request_add1_nonce() adds a nonce value and optionally
5343 generates a random value. OCSP_check_nonce() checks the
5344 validity of the nonce in an OCSP response.
5347 *) Change function OCSP_request_add() to OCSP_request_add0_id().
5348 This doesn't copy the supplied OCSP_CERTID and avoids the
5349 need to free up the newly created id. Change return type
5350 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
5351 This can then be used to add extensions to the request.
5352 Deleted OCSP_request_new(), since most of its functionality
5353 is now in OCSP_REQUEST_new() (and the case insensitive name
5354 clash) apart from the ability to set the request name which
5355 will be added elsewhere.
5358 *) Update OCSP API. Remove obsolete extensions argument from
5359 various functions. Extensions are now handled using the new
5360 OCSP extension code. New simple OCSP HTTP function which
5361 can be used to send requests and parse the response.
5364 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
5365 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
5366 uses the special reorder version of SET OF to sort the attributes
5367 and reorder them to match the encoded order. This resolves a long
5368 standing problem: a verify on a PKCS7 structure just after signing
5369 it used to fail because the attribute order did not match the
5370 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
5371 it uses the received order. This is necessary to tolerate some broken
5372 software that does not order SET OF. This is handled by encoding
5373 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
5374 to produce the required SET OF.
5377 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
5378 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
5379 files to get correct declarations of the ASN.1 item variables.
5382 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
5383 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
5384 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
5385 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
5386 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
5387 ASN1_ITEM and no wrapper functions.
5390 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
5391 replace the old function pointer based I/O routines. Change most of
5392 the *_d2i_bio() and *_d2i_fp() functions to use these.
5395 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
5396 lines, recognice more "algorithms" that can be deselected, and make
5397 it complain about algorithm deselection that isn't recognised.
5400 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
5401 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
5402 to use new functions. Add NO_ASN1_OLD which can be set to remove
5403 some old style ASN1 functions: this can be used to determine if old
5404 code will still work when these eventually go away.
5407 *) New extension functions for OCSP structures, these follow the
5408 same conventions as certificates and CRLs.
5411 *) New function X509V3_add1_i2d(). This automatically encodes and
5412 adds an extension. Its behaviour can be customised with various
5413 flags to append, replace or delete. Various wrappers added for
5414 certifcates and CRLs.
5417 *) Fix to avoid calling the underlying ASN1 print routine when
5418 an extension cannot be parsed. Correct a typo in the
5419 OCSP_SERVICELOC extension. Tidy up print OCSP format.
5422 *) Make mkdef.pl parse some of the ASN1 macros and add apropriate
5423 entries for variables.
5426 *) Add functionality to apps/openssl.c for detecting locking
5427 problems: As the program is single-threaded, all we have
5428 to do is register a locking callback using an array for
5429 storing which locks are currently held by the program.
5432 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
5433 SSL_get_ex_data_X509_STORE_idx(), which is used in
5434 ssl_verify_cert_chain() and thus can be called at any time
5435 during TLS/SSL handshakes so that thread-safety is essential.
5436 Unfortunately, the ex_data design is not at all suited
5437 for multi-threaded use, so it probably should be abolished.
5440 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
5441 [Broadcom, tweaked and integrated by Geoff Thorpe]
5443 *) Move common extension printing code to new function
5444 X509V3_print_extensions(). Reorganise OCSP print routines and
5445 implement some needed OCSP ASN1 functions. Add OCSP extensions.
5448 *) New function X509_signature_print() to remove duplication in some
5452 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
5453 set (this was treated exactly the same as SET OF previously). This
5454 is used to reorder the STACK representing the structure to match the
5455 encoding. This will be used to get round a problem where a PKCS7
5456 structure which was signed could not be verified because the STACK
5457 order did not reflect the encoded order.
5460 *) Reimplement the OCSP ASN1 module using the new code.
5463 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
5464 for its ASN1 operations. The old style function pointers still exist
5465 for now but they will eventually go away.
5468 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
5469 completely replaces the old ASN1 functionality with a table driven
5470 encoder and decoder which interprets an ASN1_ITEM structure describing
5471 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
5472 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
5473 has also been converted to the new form.
5476 *) Change BN_mod_exp_recp so that negative moduli are tolerated
5477 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
5478 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
5479 for negative moduli.
5482 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
5483 of not touching the result's sign bit.
5486 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
5490 *) Changed the LHASH code to use prototypes for callbacks, and created
5491 macros to declare and implement thin (optionally static) functions
5492 that provide type-safety and avoid function pointer casting for the
5493 type-specific callbacks.
5496 *) Added Kerberos Cipher Suites to be used with TLS, as written in
5498 [Veers Staats <staatsvr@asc.hpc.mil>,
5499 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
5501 *) Reformat the FAQ so the different questions and answers can be divided
5502 in sections depending on the subject.
5505 *) Have the zlib compression code load ZLIB.DLL dynamically under
5509 *) New function BN_mod_sqrt for computing square roots modulo a prime
5510 (using the probabilistic Tonelli-Shanks algorithm unless
5511 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
5512 be handled deterministically).
5513 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
5515 *) Make BN_mod_inverse faster by explicitly handling small quotients
5516 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
5517 512 bits], about 30% for larger ones [1024 or 2048 bits].)
5520 *) New function BN_kronecker.
5523 *) Fix BN_gcd so that it works on negative inputs; the result is
5524 positive unless both parameters are zero.
5525 Previously something reasonably close to an infinite loop was
5526 possible because numbers could be growing instead of shrinking
5527 in the implementation of Euclid's algorithm.
5530 *) Fix BN_is_word() and BN_is_one() macros to take into account the
5531 sign of the number in question.
5533 Fix BN_is_word(a,w) to work correctly for w == 0.
5535 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
5536 because its test if the absolute value of 'a' equals 'w'.
5537 Note that BN_abs_is_word does *not* handle w == 0 reliably;
5538 it exists mostly for use in the implementations of BN_is_zero(),
5539 BN_is_one(), and BN_is_word().
5542 *) New function BN_swap.
5545 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
5546 the exponentiation functions are more likely to produce reasonable
5547 results on negative inputs.
5550 *) Change BN_mod_mul so that the result is always non-negative.
5551 Previously, it could be negative if one of the factors was negative;
5552 I don't think anyone really wanted that behaviour.
5555 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
5556 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
5557 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
5558 and add new functions:
5567 BN_mod_lshift1_quick
5571 These functions always generate non-negative results.
5573 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
5574 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
5576 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
5577 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
5578 be reduced modulo m.
5579 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
5582 The following entry accidentily appeared in the CHANGES file
5583 distributed with OpenSSL 0.9.7. The modifications described in
5584 it do *not* apply to OpenSSL 0.9.7.
5586 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
5587 was actually never needed) and in BN_mul(). The removal in BN_mul()
5588 required a small change in bn_mul_part_recursive() and the addition
5589 of the functions bn_cmp_part_words(), bn_sub_part_words() and
5590 bn_add_part_words(), which do the same thing as bn_cmp_words(),
5591 bn_sub_words() and bn_add_words() except they take arrays with
5596 *) In 'openssl passwd', verify passwords read from the terminal
5597 unless the '-salt' option is used (which usually means that
5598 verification would just waste user's time since the resulting
5599 hash is going to be compared with some given password hash)
5600 or the new '-noverify' option is used.
5602 This is an incompatible change, but it does not affect
5603 non-interactive use of 'openssl passwd' (passwords on the command
5604 line, '-stdin' option, '-in ...' option) and thus should not
5608 *) Remove all references to RSAref, since there's no more need for it.
5611 *) Make DSO load along a path given through an environment variable
5612 (SHLIB_PATH) with shl_load().
5615 *) Constify the ENGINE code as a result of BIGNUM constification.
5616 Also constify the RSA code and most things related to it. In a
5617 few places, most notable in the depth of the ASN.1 code, ugly
5618 casts back to non-const were required (to be solved at a later
5622 *) Make it so the openssl application has all engines loaded by default.
5625 *) Constify the BIGNUM routines a little more.
5628 *) Add the following functions:
5630 ENGINE_load_cswift()
5632 ENGINE_load_atalla()
5634 ENGINE_load_builtin_engines()
5636 That way, an application can itself choose if external engines that
5637 are built-in in OpenSSL shall ever be used or not. The benefit is
5638 that applications won't have to be linked with libdl or other dso
5639 libraries unless it's really needed.
5641 Changed 'openssl engine' to load all engines on demand.
5642 Changed the engine header files to avoid the duplication of some
5643 declarations (they differed!).
5646 *) 'openssl engine' can now list capabilities.
5649 *) Better error reporting in 'openssl engine'.
5652 *) Never call load_dh_param(NULL) in s_server.
5655 *) Add engine application. It can currently list engines by name and
5656 identity, and test if they are actually available.
5659 *) Improve RPM specification file by forcing symbolic linking and making
5660 sure the installed documentation is also owned by root.root.
5661 [Damien Miller <djm@mindrot.org>]
5663 *) Give the OpenSSL applications more possibilities to make use of
5664 keys (public as well as private) handled by engines.
5667 *) Add OCSP code that comes from CertCo.
5670 *) Add VMS support for the Rijndael code.
5673 *) Added untested support for Nuron crypto accelerator.
5676 *) Add support for external cryptographic devices. This code was
5677 previously distributed separately as the "engine" branch.
5678 [Geoff Thorpe, Richard Levitte]
5680 *) Rework the filename-translation in the DSO code. It is now possible to
5681 have far greater control over how a "name" is turned into a filename
5682 depending on the operating environment and any oddities about the
5683 different shared library filenames on each system.
5686 *) Support threads on FreeBSD-elf in Configure.
5689 *) Fix for SHA1 assembly problem with MASM: it produces
5690 warnings about corrupt line number information when assembling
5691 with debugging information. This is caused by the overlapping
5693 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
5696 NCONF_get_number() has no error checking at all. As a replacement,
5697 NCONF_get_number_e() is defined (_e for "error checking") and is
5698 promoted strongly. The old NCONF_get_number is kept around for
5699 binary backward compatibility.
5700 Make it possible for methods to load from something other than a BIO,
5701 by providing a function pointer that is given a name instead of a BIO.
5702 For example, this could be used to load configuration data from an
5706 *) Fix for non blocking accept BIOs. Added new I/O special reason
5707 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
5708 with non blocking I/O was not possible because no retry code was
5709 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
5713 *) Added the beginnings of Rijndael support.
5716 *) Fix for bug in DirectoryString mask setting. Add support for
5717 X509_NAME_print_ex() in 'req' and X509_print_ex() function
5718 to allow certificate printing to more controllable, additional
5719 'certopt' option to 'x509' to allow new printing options to be
5723 *) Clean old EAY MD5 hack from e_os.h.
5726 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
5728 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
5729 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
5730 [Joe Orton, Steve Henson]
5732 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
5734 *) Fix additional bug revealed by the NISCC test suite:
5736 Stop bug triggering large recursion when presented with
5737 certain ASN.1 tags (CVE-2003-0851)
5740 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
5742 *) Fix various bugs revealed by running the NISCC test suite:
5744 Stop out of bounds reads in the ASN1 code when presented with
5745 invalid tags (CVE-2003-0543 and CVE-2003-0544).
5747 If verify callback ignores invalid public key errors don't try to check
5748 certificate signature with the NULL public key.
5752 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
5753 if the server requested one: as stated in TLS 1.0 and SSL 3.0
5757 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
5758 extra data after the compression methods not only for TLS 1.0
5759 but also for SSL 3.0 (as required by the specification).
5760 [Bodo Moeller; problem pointed out by Matthias Loepfe]
5762 *) Change X509_certificate_type() to mark the key as exported/exportable
5763 when it's 512 *bits* long, not 512 bytes.
5766 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
5768 *) Countermeasure against the Klima-Pokorny-Rosa extension of
5769 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
5770 a protocol version number mismatch like a decryption error
5771 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
5774 *) Turn on RSA blinding by default in the default implementation
5775 to avoid a timing attack. Applications that don't want it can call
5776 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
5777 They would be ill-advised to do so in most cases.
5778 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
5780 *) Change RSA blinding code so that it works when the PRNG is not
5781 seeded (in this case, the secret RSA exponent is abused as
5782 an unpredictable seed -- if it is not unpredictable, there
5783 is no point in blinding anyway). Make RSA blinding thread-safe
5784 by remembering the creator's thread ID in rsa->blinding and
5785 having all other threads use local one-time blinding factors
5786 (this requires more computation than sharing rsa->blinding, but
5787 avoids excessive locking; and if an RSA object is not shared
5788 between threads, blinding will still be very fast).
5791 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
5793 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
5794 via timing by performing a MAC computation even if incorrrect
5795 block cipher padding has been found. This is a countermeasure
5796 against active attacks where the attacker has to distinguish
5797 between bad padding and a MAC verification error. (CVE-2003-0078)
5799 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
5800 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
5801 Martin Vuagnoux (EPFL, Ilion)]
5803 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
5805 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
5806 memory from it's contents. This is done with a counter that will
5807 place alternating values in each byte. This can be used to solve
5808 two issues: 1) the removal of calls to memset() by highly optimizing
5809 compilers, and 2) cleansing with other values than 0, since those can
5810 be read through on certain media, for example a swap space on disk.
5813 *) Bugfix: client side session caching did not work with external caching,
5814 because the session->cipher setting was not restored when reloading
5815 from the external cache. This problem was masked, when
5816 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
5817 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
5820 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
5821 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
5822 [Zeev Lieber <zeev-l@yahoo.com>]
5824 *) Undo an undocumented change introduced in 0.9.6e which caused
5825 repeated calls to OpenSSL_add_all_ciphers() and
5826 OpenSSL_add_all_digests() to be ignored, even after calling
5830 *) Change the default configuration reader to deal with last line not
5831 being properly terminated.
5834 *) Change X509_NAME_cmp() so it applies the special rules on handling
5835 DN values that are of type PrintableString, as well as RDNs of type
5836 emailAddress where the value has the type ia5String.
5837 [stefank@valicert.com via Richard Levitte]
5839 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
5840 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
5841 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
5842 the bitwise-OR of the two for use by the majority of applications
5843 wanting this behaviour, and update the docs. The documented
5844 behaviour and actual behaviour were inconsistent and had been
5845 changing anyway, so this is more a bug-fix than a behavioural
5847 [Geoff Thorpe, diagnosed by Nadav Har'El]
5849 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
5850 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
5853 *) Fix initialization code race conditions in
5854 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
5855 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
5856 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
5857 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
5858 ssl2_get_cipher_by_char(),
5859 ssl3_get_cipher_by_char().
5860 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
5862 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
5863 the cached sessions are flushed, as the remove_cb() might use ex_data
5864 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
5865 (see [openssl.org #212]).
5866 [Geoff Thorpe, Lutz Jaenicke]
5868 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
5869 length, instead of the encoding length to d2i_ASN1_OBJECT.
5872 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
5874 *) [In 0.9.6g-engine release:]
5875 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
5876 [Lynn Gazis <lgazis@rainbow.com>]
5878 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
5880 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
5881 and get fix the header length calculation.
5882 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
5883 Alon Kantor <alonk@checkpoint.com> (and others),
5886 *) Use proper error handling instead of 'assertions' in buffer
5887 overflow checks added in 0.9.6e. This prevents DoS (the
5888 assertions could call abort()).
5889 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
5891 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
5893 *) Add various sanity checks to asn1_get_length() to reject
5894 the ASN1 length bytes if they exceed sizeof(long), will appear
5895 negative or the content length exceeds the length of the
5897 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
5899 *) Fix cipher selection routines: ciphers without encryption had no flags
5900 for the cipher strength set and where therefore not handled correctly
5901 by the selection routines (PR #130).
5904 *) Fix EVP_dsa_sha macro.
5908 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
5909 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
5910 that was added in OpenSSL 0.9.6d.
5912 As the countermeasure turned out to be incompatible with some
5913 broken SSL implementations, the new option is part of SSL_OP_ALL.
5914 SSL_OP_ALL is usually employed when compatibility with weird SSL
5915 implementations is desired (e.g. '-bugs' option to 's_client' and
5916 's_server'), so the new option is automatically set in many
5920 *) Changes in security patch:
5922 Changes marked "(CHATS)" were sponsored by the Defense Advanced
5923 Research Projects Agency (DARPA) and Air Force Research Laboratory,
5924 Air Force Materiel Command, USAF, under agreement number
5927 *) Add various sanity checks to asn1_get_length() to reject
5928 the ASN1 length bytes if they exceed sizeof(long), will appear
5929 negative or the content length exceeds the length of the
5930 supplied buffer. (CVE-2002-0659)
5931 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
5933 *) Assertions for various potential buffer overflows, not known to
5935 [Ben Laurie (CHATS)]
5937 *) Various temporary buffers to hold ASCII versions of integers were
5938 too small for 64 bit platforms. (CVE-2002-0655)
5939 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
5941 *) Remote buffer overflow in SSL3 protocol - an attacker could
5942 supply an oversized session ID to a client. (CVE-2002-0656)
5943 [Ben Laurie (CHATS)]
5945 *) Remote buffer overflow in SSL2 protocol - an attacker could
5946 supply an oversized client master key. (CVE-2002-0656)
5947 [Ben Laurie (CHATS)]
5949 Changes between 0.9.6c and 0.9.6d [9 May 2002]
5951 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
5952 encoded as NULL) with id-dsa-with-sha1.
5953 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
5955 *) Check various X509_...() return values in apps/req.c.
5956 [Nils Larsch <nla@trustcenter.de>]
5958 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
5959 an end-of-file condition would erronously be flagged, when the CRLF
5960 was just at the end of a processed block. The bug was discovered when
5961 processing data through a buffering memory BIO handing the data to a
5962 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
5963 <ptsekov@syntrex.com> and Nedelcho Stanev.
5966 *) Implement a countermeasure against a vulnerability recently found
5967 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
5968 before application data chunks to avoid the use of known IVs
5969 with data potentially chosen by the attacker.
5972 *) Fix length checks in ssl3_get_client_hello().
5975 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
5976 to prevent ssl3_read_internal() from incorrectly assuming that
5977 ssl3_read_bytes() found application data while handshake
5978 processing was enabled when in fact s->s3->in_read_app_data was
5979 merely automatically cleared during the initial handshake.
5980 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
5982 *) Fix object definitions for Private and Enterprise: they were not
5983 recognized in their shortname (=lowercase) representation. Extend
5984 obj_dat.pl to issue an error when using undefined keywords instead
5985 of silently ignoring the problem (Svenning Sorensen
5986 <sss@sss.dnsalias.net>).
5989 *) Fix DH_generate_parameters() so that it works for 'non-standard'
5990 generators, i.e. generators other than 2 and 5. (Previously, the
5991 code did not properly initialise the 'add' and 'rem' values to
5992 BN_generate_prime().)
5994 In the new general case, we do not insist that 'generator' is
5995 actually a primitive root: This requirement is rather pointless;
5996 a generator of the order-q subgroup is just as good, if not
6000 *) Map new X509 verification errors to alerts. Discovered and submitted by
6001 Tom Wu <tom@arcot.com>.
6004 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
6005 returning non-zero before the data has been completely received
6006 when using non-blocking I/O.
6007 [Bodo Moeller; problem pointed out by John Hughes]
6009 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
6010 [Ben Laurie, Lutz Jaenicke]
6012 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
6013 Yoram Zahavi <YoramZ@gilian.com>).
6016 *) Add information about CygWin 1.3 and on, and preserve proper
6017 configuration for the versions before that.
6018 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
6020 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
6021 check whether we deal with a copy of a session and do not delete from
6022 the cache in this case. Problem reported by "Izhar Shoshani Levi"
6023 <izhar@checkpoint.com>.
6026 *) Do not store session data into the internal session cache, if it
6027 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
6028 flag is set). Proposed by Aslam <aslam@funk.com>.
6031 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
6035 *) [In 0.9.6d-engine release:]
6036 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
6037 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
6039 *) Add the configuration target linux-s390x.
6040 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
6042 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
6043 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
6044 variable as an indication that a ClientHello message has been
6045 received. As the flag value will be lost between multiple
6046 invocations of ssl3_accept when using non-blocking I/O, the
6047 function may not be aware that a handshake has actually taken
6048 place, thus preventing a new session from being added to the
6051 To avoid this problem, we now set s->new_session to 2 instead of
6052 using a local variable.
6053 [Lutz Jaenicke, Bodo Moeller]
6055 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
6056 if the SSL_R_LENGTH_MISMATCH error is detected.
6057 [Geoff Thorpe, Bodo Moeller]
6059 *) New 'shared_ldflag' column in Configure platform table.
6062 *) Fix EVP_CIPHER_mode macro.
6063 ["Dan S. Camper" <dan@bti.net>]
6065 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
6066 type, we must throw them away by setting rr->length to 0.
6067 [D P Chang <dpc@qualys.com>]
6069 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
6071 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
6072 <Dominikus.Scherkl@biodata.com>. (The previous implementation
6073 worked incorrectly for those cases where range = 10..._2 and
6074 3*range is two bits longer than range.)
6077 *) Only add signing time to PKCS7 structures if it is not already
6081 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
6082 OBJ_ld_ce should be OBJ_id_ce.
6083 Also some ip-pda OIDs in crypto/objects/objects.txt were
6084 incorrect (cf. RFC 3039).
6085 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
6087 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
6088 returns early because it has nothing to do.
6089 [Andy Schneider <andy.schneider@bjss.co.uk>]
6091 *) [In 0.9.6c-engine release:]
6092 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
6093 [Andy Schneider <andy.schneider@bjss.co.uk>]
6095 *) [In 0.9.6c-engine release:]
6096 Add support for Cryptographic Appliance's keyserver technology.
6097 (Use engine 'keyclient')
6098 [Cryptographic Appliances and Geoff Thorpe]
6100 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
6101 is called via tools/c89.sh because arguments have to be
6102 rearranged (all '-L' options must appear before the first object
6104 [Richard Shapiro <rshapiro@abinitio.com>]
6106 *) [In 0.9.6c-engine release:]
6107 Add support for Broadcom crypto accelerator cards, backported
6109 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
6111 *) [In 0.9.6c-engine release:]
6112 Add support for SureWare crypto accelerator cards from
6113 Baltimore Technologies. (Use engine 'sureware')
6114 [Baltimore Technologies and Mark Cox]
6116 *) [In 0.9.6c-engine release:]
6117 Add support for crypto accelerator cards from Accelerated
6118 Encryption Processing, www.aep.ie. (Use engine 'aep')
6119 [AEP Inc. and Mark Cox]
6121 *) Add a configuration entry for gcc on UnixWare.
6122 [Gary Benson <gbenson@redhat.com>]
6124 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
6125 messages are stored in a single piece (fixed-length part and
6126 variable-length part combined) and fix various bugs found on the way.
6129 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
6130 instead. BIO_gethostbyname() does not know what timeouts are
6131 appropriate, so entries would stay in cache even when they have
6133 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
6135 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
6136 faced with a pathologically small ClientHello fragment that does
6137 not contain client_version: Instead of aborting with an error,
6138 simply choose the highest available protocol version (i.e.,
6139 TLS 1.0 unless it is disabled). In practice, ClientHello
6140 messages are never sent like this, but this change gives us
6141 strictly correct behaviour at least for TLS.
6144 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
6145 never resets s->method to s->ctx->method when called from within
6146 one of the SSL handshake functions.
6147 [Bodo Moeller; problem pointed out by Niko Baric]
6149 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
6150 (sent using the client's version number) if client_version is
6151 smaller than the protocol version in use. Also change
6152 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
6153 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
6154 the client will at least see that alert.
6157 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
6161 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
6162 client receives HelloRequest while in a handshake.
6163 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
6165 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
6166 should end in 'break', not 'goto end' which circuments various
6167 cleanups done in state SSL_ST_OK. But session related stuff
6168 must be disabled for SSL_ST_OK in the case that we just sent a
6171 Also avoid some overhead by not calling ssl_init_wbio_buffer()
6172 before just sending a HelloRequest.
6173 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
6175 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
6176 reveal whether illegal block cipher padding was found or a MAC
6177 verification error occured. (Neither SSLerr() codes nor alerts
6178 are directly visible to potential attackers, but the information
6179 may leak via logfiles.)
6181 Similar changes are not required for the SSL 2.0 implementation
6182 because the number of padding bytes is sent in clear for SSL 2.0,
6183 and the extra bytes are just ignored. However ssl/s2_pkt.c
6184 failed to verify that the purported number of padding bytes is in
6188 *) Add OpenUNIX-8 support including shared libraries
6189 (Boyd Lynn Gerber <gerberb@zenez.com>).
6192 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
6193 'wristwatch attack' using huge encoding parameters (cf.
6194 James H. Manger's CRYPTO 2001 paper). Note that the
6195 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
6196 encoding parameters and hence was not vulnerable.
6199 *) BN_sqr() bug fix.
6200 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
6202 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
6203 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
6204 followed by modular reduction.
6205 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
6207 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
6208 equivalent based on BN_pseudo_rand() instead of BN_rand().
6211 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
6212 This function was broken, as the check for a new client hello message
6213 to handle SGC did not allow these large messages.
6214 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
6217 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
6220 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
6221 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
6224 *) Rework the configuration and shared library support for Tru64 Unix.
6225 The configuration part makes use of modern compiler features and
6226 still retains old compiler behavior for those that run older versions
6227 of the OS. The shared library support part includes a variant that
6228 uses the RPATH feature, and is available through the special
6229 configuration target "alpha-cc-rpath", which will never be selected
6231 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
6233 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
6234 with the same message size as in ssl3_get_certificate_request().
6235 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
6236 messages might inadvertently be reject as too long.
6237 [Petr Lampa <lampa@fee.vutbr.cz>]
6239 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
6242 *) Modified SSL library such that the verify_callback that has been set
6243 specificly for an SSL object with SSL_set_verify() is actually being
6244 used. Before the change, a verify_callback set with this function was
6245 ignored and the verify_callback() set in the SSL_CTX at the time of
6246 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
6247 to allow the necessary settings.
6250 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
6251 explicitly to NULL, as at least on Solaris 8 this seems not always to be
6252 done automatically (in contradiction to the requirements of the C
6253 standard). This made problems when used from OpenSSH.
6256 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
6257 dh->length and always used
6259 BN_rand_range(priv_key, dh->p).
6261 BN_rand_range() is not necessary for Diffie-Hellman, and this
6262 specific range makes Diffie-Hellman unnecessarily inefficient if
6263 dh->length (recommended exponent length) is much smaller than the
6264 length of dh->p. We could use BN_rand_range() if the order of
6265 the subgroup was stored in the DH structure, but we only have
6270 BN_rand(priv_key, l, ...)
6272 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
6278 RSA_eay_public_encrypt
6279 RSA_eay_private_decrypt
6280 RSA_eay_private_encrypt (signing)
6281 RSA_eay_public_decrypt (signature verification)
6283 (default implementations for RSA_public_encrypt,
6284 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
6285 always reject numbers >= n.
6288 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
6289 to synchronize access to 'locking_thread'. This is necessary on
6290 systems where access to 'locking_thread' (an 'unsigned long'
6291 variable) is not atomic.
6294 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
6295 *before* setting the 'crypto_lock_rand' flag. The previous code had
6296 a race condition if 0 is a valid thread ID.
6297 [Travis Vitek <vitek@roguewave.com>]
6299 *) Add support for shared libraries under Irix.
6300 [Albert Chin-A-Young <china@thewrittenword.com>]
6302 *) Add configuration option to build on Linux on both big-endian and
6304 [Ralf Baechle <ralf@uni-koblenz.de>]
6306 *) Add the possibility to create shared libraries on HP-UX.
6309 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
6311 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
6312 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
6313 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
6314 PRNG state recovery was possible based on the output of
6315 one PRNG request appropriately sized to gain knowledge on
6316 'md' followed by enough consecutive 1-byte PRNG requests
6317 to traverse all of 'state'.
6319 1. When updating 'md_local' (the current thread's copy of 'md')
6320 during PRNG output generation, hash all of the previous
6321 'md_local' value, not just the half used for PRNG output.
6323 2. Make the number of bytes from 'state' included into the hash
6324 independent from the number of PRNG bytes requested.
6326 The first measure alone would be sufficient to avoid
6327 Markku-Juhani's attack. (Actually it had never occurred
6328 to me that the half of 'md_local' used for chaining was the
6329 half from which PRNG output bytes were taken -- I had always
6330 assumed that the secret half would be used.) The second
6331 measure makes sure that additional data from 'state' is never
6332 mixed into 'md_local' in small portions; this heuristically
6333 further strengthens the PRNG.
6336 *) Fix crypto/bn/asm/mips3.s.
6339 *) When only the key is given to "enc", the IV is undefined. Print out
6340 an error message in this case.
6343 *) Handle special case when X509_NAME is empty in X509 printing routines.
6346 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
6347 positive and less than q.
6350 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
6351 used: it isn't thread safe and the add_lock_callback should handle
6353 [Paul Rose <Paul.Rose@bridge.com>]
6355 *) Verify that incoming data obeys the block size in
6356 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
6360 [Ulf Möller, Bodo Möller]
6362 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
6363 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
6364 when fixing the server behaviour for backwards-compatible 'client
6365 hello' messages. (Note that the attack is impractical against
6366 SSL 3.0 and TLS 1.0 anyway because length and version checking
6367 means that the probability of guessing a valid ciphertext is
6368 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
6371 Before 0.9.5, the countermeasure (hide the error by generating a
6372 random 'decryption result') did not work properly because
6373 ERR_clear_error() was missing, meaning that SSL_get_error() would
6374 detect the supposedly ignored error.
6376 Both problems are now fixed.
6379 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
6380 (previously it was 1024).
6383 *) Fix for compatibility mode trust settings: ignore trust settings
6384 unless some valid trust or reject settings are present.
6387 *) Fix for blowfish EVP: its a variable length cipher.
6390 *) Fix various bugs related to DSA S/MIME verification. Handle missing
6391 parameters in DSA public key structures and return an error in the
6392 DSA routines if parameters are absent.
6395 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
6396 in the current directory if neither $RANDFILE nor $HOME was set.
6397 RAND_file_name() in 0.9.6a returned NULL in this case. This has
6398 caused some confusion to Windows users who haven't defined $HOME.
6399 Thus RAND_file_name() is changed again: e_os.h can define a
6400 DEFAULT_HOME, which will be used if $HOME is not set.
6401 For Windows, we use "C:"; on other platforms, we still require
6402 environment variables.
6404 *) Move 'if (!initialized) RAND_poll()' into regions protected by
6405 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
6406 having multiple threads call RAND_poll() concurrently.
6409 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
6410 combination of a flag and a thread ID variable.
6411 Otherwise while one thread is in ssleay_rand_bytes (which sets the
6412 flag), *other* threads can enter ssleay_add_bytes without obeying
6413 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
6414 that they do not hold after the first thread unsets add_do_not_lock).
6417 *) Change bctest again: '-x' expressions are not available in all
6421 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
6423 *) Fix a couple of memory leaks in PKCS7_dataDecode()
6424 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
6426 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
6427 the default extension for executables, if any. Also, make the perl
6428 scripts that use symlink() to test if it really exists and use "cp"
6429 if it doesn't. All this made OpenSSL compilable and installable in
6433 *) Fix for asn1_GetSequence() for indefinite length constructed data.
6434 If SEQUENCE is length is indefinite just set c->slen to the total
6435 amount of data available.
6436 [Steve Henson, reported by shige@FreeBSD.org]
6437 [This change does not apply to 0.9.7.]
6439 *) Change bctest to avoid here-documents inside command substitution
6440 (workaround for FreeBSD /bin/sh bug).
6441 For compatibility with Ultrix, avoid shell functions (introduced
6442 in the bctest version that searches along $PATH).
6445 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
6446 with des_encrypt() defined on some operating systems, like Solaris
6450 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
6451 On the Importance of Eliminating Errors in Cryptographic
6452 Computations, J. Cryptology 14 (2001) 2, 101-119,
6453 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
6456 *) MIPS assembler BIGNUM division bug fix.
6459 *) Disabled incorrect Alpha assembler code.
6462 *) Fix PKCS#7 decode routines so they correctly update the length
6463 after reading an EOC for the EXPLICIT tag.
6465 [This change does not apply to 0.9.7.]
6467 *) Fix bug in PKCS#12 key generation routines. This was triggered
6468 if a 3DES key was generated with a 0 initial byte. Include
6469 PKCS12_BROKEN_KEYGEN compilation option to retain the old
6470 (but broken) behaviour.
6473 *) Enhance bctest to search for a working bc along $PATH and print
6475 [Tim Rice <tim@multitalents.net> via Richard Levitte]
6477 *) Fix memory leaks in err.c: free err_data string if necessary;
6478 don't write to the wrong index in ERR_set_error_data.
6481 *) Implement ssl23_peek (analogous to ssl23_read), which previously
6485 *) Replace rdtsc with _emit statements for VC++ version 5.
6486 [Jeremy Cooper <jeremy@baymoo.org>]
6488 *) Make it possible to reuse SSLv2 sessions.
6491 *) In copy_email() check for >= 0 as a return value for
6492 X509_NAME_get_index_by_NID() since 0 is a valid index.
6493 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
6495 *) Avoid coredump with unsupported or invalid public keys by checking if
6496 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
6497 PKCS7_verify() fails with non detached data.
6500 *) Don't use getenv in library functions when run as setuid/setgid.
6501 New function OPENSSL_issetugid().
6504 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
6505 due to incorrect handling of multi-threading:
6507 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
6509 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
6511 3. Count how many times MemCheck_off() has been called so that
6512 nested use can be treated correctly. This also avoids
6513 inband-signalling in the previous code (which relied on the
6514 assumption that thread ID 0 is impossible).
6517 *) Add "-rand" option also to s_client and s_server.
6520 *) Fix CPU detection on Irix 6.x.
6521 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
6522 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
6524 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
6527 [This change does not apply to 0.9.7.]
6529 *) Use the cached encoding of an X509_NAME structure rather than
6530 copying it. This is apparently the reason for the libsafe "errors"
6531 but the code is actually correct.
6534 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
6535 Bleichenbacher's DSA attack.
6536 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
6537 to be set and top=0 forces the highest bit to be set; top=-1 is new
6538 and leaves the highest bit random.
6539 [Ulf Moeller, Bodo Moeller]
6541 *) In the NCONF_...-based implementations for CONF_... queries
6542 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
6543 a temporary CONF structure with the data component set to NULL
6544 (which gives segmentation faults in lh_retrieve).
6545 Instead, use NULL for the CONF pointer in CONF_get_string and
6546 CONF_get_number (which may use environment variables) and directly
6547 return NULL from CONF_get_section.
6550 *) Fix potential buffer overrun for EBCDIC.
6553 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
6554 keyUsage if basicConstraints absent for a CA.
6557 *) Make SMIME_write_PKCS7() write mail header values with a format that
6558 is more generally accepted (no spaces before the semicolon), since
6559 some programs can't parse those values properly otherwise. Also make
6560 sure BIO's that break lines after each write do not create invalid
6564 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
6565 macros previously used would not encode an empty SEQUENCE OF
6566 and break the signature.
6568 [This change does not apply to 0.9.7.]
6570 *) Zero the premaster secret after deriving the master secret in
6574 *) Add some EVP_add_digest_alias registrations (as found in
6575 OpenSSL_add_all_digests()) to SSL_library_init()
6576 aka OpenSSL_add_ssl_algorithms(). This provides improved
6577 compatibility with peers using X.509 certificates
6578 with unconventional AlgorithmIdentifier OIDs.
6581 *) Fix for Irix with NO_ASM.
6582 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
6584 *) ./config script fixes.
6585 [Ulf Moeller, Richard Levitte]
6587 *) Fix 'openssl passwd -1'.
6590 *) Change PKCS12_key_gen_asc() so it can cope with non null
6591 terminated strings whose length is passed in the passlen
6592 parameter, for example from PEM callbacks. This was done
6593 by adding an extra length parameter to asc2uni().
6594 [Steve Henson, reported by <oddissey@samsung.co.kr>]
6596 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
6597 call failed, free the DSA structure.
6600 *) Fix to uni2asc() to cope with zero length Unicode strings.
6601 These are present in some PKCS#12 files.
6604 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
6605 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
6606 when writing a 32767 byte record.
6607 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
6609 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
6610 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
6612 (RSA objects have a reference count access to which is protected
6613 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
6614 so they are meant to be shared between threads.)
6615 [Bodo Moeller, Geoff Thorpe; original patch submitted by
6616 "Reddie, Steven" <Steven.Reddie@ca.com>]
6618 *) Fix a deadlock in CRYPTO_mem_leaks().
6621 *) Use better test patterns in bntest.
6624 *) rand_win.c fix for Borland C.
6627 *) BN_rshift bugfix for n == 0.
6630 *) Add a 'bctest' script that checks for some known 'bc' bugs
6631 so that 'make test' does not abort just because 'bc' is broken.
6634 *) Store verify_result within SSL_SESSION also for client side to
6635 avoid potential security hole. (Re-used sessions on the client side
6636 always resulted in verify_result==X509_V_OK, not using the original
6637 result of the server certificate verification.)
6640 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
6641 SSL3_RT_APPLICATION_DATA, return 0.
6642 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
6646 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
6647 releases, have been re-implemented by renaming the previous
6648 implementations of ssl2_read and ssl3_read to ssl2_read_internal
6649 and ssl3_read_internal, respectively, and adding 'peek' parameters
6650 to them. The new ssl[23]_{read,peek} functions are calls to
6651 ssl[23]_read_internal with the 'peek' flag set appropriately.
6652 A 'peek' parameter has also been added to ssl3_read_bytes, which
6653 does the actual work for ssl3_read_internal.
6656 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
6657 the method-specific "init()" handler. Also clean up ex_data after
6658 calling the method-specific "finish()" handler. Previously, this was
6659 happening the other way round.
6662 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
6663 The previous value, 12, was not always sufficient for BN_mod_exp().
6666 *) Make sure that shared libraries get the internal name engine with
6667 the full version number and not just 0. This should mark the
6668 shared libraries as not backward compatible. Of course, this should
6669 be changed again when we can guarantee backward binary compatibility.
6672 *) Fix typo in get_cert_by_subject() in by_dir.c
6673 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
6675 *) Rework the system to generate shared libraries:
6677 - Make note of the expected extension for the shared libraries and
6678 if there is a need for symbolic links from for example libcrypto.so.0
6679 to libcrypto.so.0.9.7. There is extended info in Configure for
6682 - Make as few rebuilds of the shared libraries as possible.
6684 - Still avoid linking the OpenSSL programs with the shared libraries.
6686 - When installing, install the shared libraries separately from the
6690 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
6692 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
6693 and not in SSL_clear because the latter is also used by the
6694 accept/connect functions; previously, the settings made by
6695 SSL_set_read_ahead would be lost during the handshake.
6696 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
6698 *) Correct util/mkdef.pl to be selective about disabled algorithms.
6699 Previously, it would create entries for disableed algorithms no
6703 *) Added several new manual pages for SSL_* function.
6706 Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
6708 *) In ssl23_get_client_hello, generate an error message when faced
6709 with an initial SSL 3.0/TLS record that is too small to contain the
6710 first two bytes of the ClientHello message, i.e. client_version.
6711 (Note that this is a pathologic case that probably has never happened
6712 in real life.) The previous approach was to use the version number
6713 from the record header as a substitute; but our protocol choice
6714 should not depend on that one because it is not authenticated
6715 by the Finished messages.
6718 *) More robust randomness gathering functions for Windows.
6719 [Jeffrey Altman <jaltman@columbia.edu>]
6721 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
6722 not set then we don't setup the error code for issuer check errors
6723 to avoid possibly overwriting other errors which the callback does
6724 handle. If an application does set the flag then we assume it knows
6725 what it is doing and can handle the new informational codes
6729 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
6730 a general "ANY" type, as such it should be able to decode anything
6731 including tagged types. However it didn't check the class so it would
6732 wrongly interpret tagged types in the same way as their universal
6733 counterpart and unknown types were just rejected. Changed so that the
6734 tagged and unknown types are handled in the same way as a SEQUENCE:
6735 that is the encoding is stored intact. There is also a new type
6736 "V_ASN1_OTHER" which is used when the class is not universal, in this
6737 case we have no idea what the actual type is so we just lump them all
6741 *) On VMS, stdout may very well lead to a file that is written to
6742 in a record-oriented fashion. That means that every write() will
6743 write a separate record, which will be read separately by the
6744 programs trying to read from it. This can be very confusing.
6746 The solution is to put a BIO filter in the way that will buffer
6747 text until a linefeed is reached, and then write everything a
6748 line at a time, so every record written will be an actual line,
6749 not chunks of lines and not (usually doesn't happen, but I've
6750 seen it once) several lines in one record. BIO_f_linebuffer() is
6753 Currently, it's a VMS-only method, because that's where it has
6754 been tested well enough.
6757 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
6758 it can return incorrect results.
6759 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
6760 but it was in 0.9.6-beta[12].)
6763 *) Disable the check for content being present when verifying detached
6764 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
6765 include zero length content when signing messages.
6768 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
6769 BIO_ctrl (for BIO pairs).
6772 *) Add DSO method for VMS.
6775 *) Bug fix: Montgomery multiplication could produce results with the
6779 *) Add RPM specification openssl.spec and modify it to build three
6780 packages. The default package contains applications, application
6781 documentation and run-time libraries. The devel package contains
6782 include files, static libraries and function documentation. The
6783 doc package contains the contents of the doc directory. The original
6784 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
6787 *) Add a large number of documentation files for many SSL routines.
6788 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
6790 *) Add a configuration entry for Sony News 4.
6791 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
6793 *) Don't set the two most significant bits to one when generating a
6794 random number < q in the DSA library.
6797 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
6798 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
6799 the underlying transport is blocking) if a handshake took place.
6800 (The default behaviour is needed by applications such as s_client
6801 and s_server that use select() to determine when to use SSL_read;
6802 but for applications that know in advance when to expect data, it
6803 just makes things more complicated.)
6806 *) Add RAND_egd_bytes(), which gives control over the number of bytes read
6810 *) Add a few more EBCDIC conditionals that make `req' and `x509'
6811 work better on such systems.
6812 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
6814 *) Add two demo programs for PKCS12_parse() and PKCS12_create().
6815 Update PKCS12_parse() so it copies the friendlyName and the
6816 keyid to the certificates aux info.
6819 *) Fix bug in PKCS7_verify() which caused an infinite loop
6820 if there was more than one signature.
6821 [Sven Uszpelkat <su@celocom.de>]
6823 *) Major change in util/mkdef.pl to include extra information
6824 about each symbol, as well as presentig variables as well
6825 as functions. This change means that there's n more need
6826 to rebuild the .num files when some algorithms are excluded.
6829 *) Allow the verify time to be set by an application,
6830 rather than always using the current time.
6833 *) Phase 2 verify code reorganisation. The certificate
6834 verify code now looks up an issuer certificate by a
6835 number of criteria: subject name, authority key id
6836 and key usage. It also verifies self signed certificates
6837 by the same criteria. The main comparison function is
6838 X509_check_issued() which performs these checks.
6840 Lot of changes were necessary in order to support this
6841 without completely rewriting the lookup code.
6843 Authority and subject key identifier are now cached.
6845 The LHASH 'certs' is X509_STORE has now been replaced
6846 by a STACK_OF(X509_OBJECT). This is mainly because an
6847 LHASH can't store or retrieve multiple objects with
6848 the same hash value.
6850 As a result various functions (which were all internal
6851 use only) have changed to handle the new X509_STORE
6852 structure. This will break anything that messed round
6853 with X509_STORE internally.
6855 The functions X509_STORE_add_cert() now checks for an
6856 exact match, rather than just subject name.
6858 The X509_STORE API doesn't directly support the retrieval
6859 of multiple certificates matching a given criteria, however
6860 this can be worked round by performing a lookup first
6861 (which will fill the cache with candidate certificates)
6862 and then examining the cache for matches. This is probably
6863 the best we can do without throwing out X509_LOOKUP
6864 entirely (maybe later...).
6866 The X509_VERIFY_CTX structure has been enhanced considerably.
6868 All certificate lookup operations now go via a get_issuer()
6869 callback. Although this currently uses an X509_STORE it
6870 can be replaced by custom lookups. This is a simple way
6871 to bypass the X509_STORE hackery necessary to make this
6872 work and makes it possible to use more efficient techniques
6873 in future. A very simple version which uses a simple
6874 STACK for its trusted certificate store is also provided
6875 using X509_STORE_CTX_trusted_stack().
6877 The verify_cb() and verify() callbacks now have equivalents
6878 in the X509_STORE_CTX structure.
6880 X509_STORE_CTX also has a 'flags' field which can be used
6881 to customise the verify behaviour.
6884 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
6885 excludes S/MIME capabilities.
6888 *) When a certificate request is read in keep a copy of the
6889 original encoding of the signed data and use it when outputing
6890 again. Signatures then use the original encoding rather than
6891 a decoded, encoded version which may cause problems if the
6892 request is improperly encoded.
6895 *) For consistency with other BIO_puts implementations, call
6896 buffer_write(b, ...) directly in buffer_puts instead of calling
6899 In BIO_puts, increment b->num_write as in BIO_write.
6900 [Peter.Sylvester@EdelWeb.fr]
6902 *) Fix BN_mul_word for the case where the word is 0. (We have to use
6903 BN_zero, we may not return a BIGNUM with an array consisting of
6907 *) Avoid calling abort() from within the library when problems are
6908 detected, except if preprocessor symbols have been defined
6909 (such as REF_CHECK, BN_DEBUG etc.).
6912 *) New openssl application 'rsautl'. This utility can be
6913 used for low level RSA operations. DER public key
6914 BIO/fp routines also added.
6917 *) New Configure entry and patches for compiling on QNX 4.
6918 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
6920 *) A demo state-machine implementation was sponsored by
6921 Nuron (http://www.nuron.com/) and is now available in
6922 demos/state_machine.
6925 *) New options added to the 'dgst' utility for signature
6926 generation and verification.
6929 *) Unrecognized PKCS#7 content types are now handled via a
6930 catch all ASN1_TYPE structure. This allows unsupported
6931 types to be stored as a "blob" and an application can
6932 encode and decode it manually.
6935 *) Fix various signed/unsigned issues to make a_strex.c
6937 [Oscar Jacobsson <oscar.jacobsson@celocom.com>]
6939 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
6940 length if passed a buffer. ASN1_INTEGER_to_BN failed
6941 if passed a NULL BN and its argument was negative.
6942 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
6944 *) Modification to PKCS#7 encoding routines to output definite
6945 length encoding. Since currently the whole structures are in
6946 memory there's not real point in using indefinite length
6947 constructed encoding. However if OpenSSL is compiled with
6948 the flag PKCS7_INDEFINITE_ENCODING the old form is used.
6951 *) Added BIO_vprintf() and BIO_vsnprintf().
6954 *) Added more prefixes to parse for in the the strings written
6955 through a logging bio, to cover all the levels that are available
6956 through syslog. The prefixes are now:
6958 PANIC, EMERG, EMR => LOG_EMERG
6959 ALERT, ALR => LOG_ALERT
6960 CRIT, CRI => LOG_CRIT
6961 ERROR, ERR => LOG_ERR
6962 WARNING, WARN, WAR => LOG_WARNING
6963 NOTICE, NOTE, NOT => LOG_NOTICE
6964 INFO, INF => LOG_INFO
6965 DEBUG, DBG => LOG_DEBUG
6967 and as before, if none of those prefixes are present at the
6968 beginning of the string, LOG_ERR is chosen.
6970 On Win32, the LOG_* levels are mapped according to this:
6972 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
6973 LOG_WARNING => EVENTLOG_WARNING_TYPE
6974 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
6978 *) Made it possible to reconfigure with just the configuration
6979 argument "reconf" or "reconfigure". The command line arguments
6980 are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
6981 and are retrieved from there when reconfiguring.
6985 [Assar Westerlund <assar@sics.se>, Richard Levitte]
6987 *) Add the arguments -CAfile and -CApath to the pkcs12 utility.
6990 *) The obj_dat.pl script was messing up the sorting of object
6991 names. The reason was that it compared the quoted version
6992 of strings as a result "OCSP" > "OCSP Signing" because
6993 " > SPACE. Changed script to store unquoted versions of
6994 names and add quotes on output. It was also omitting some
6995 names from the lookup table if they were given a default
6996 value (that is if SN is missing it is given the same
6997 value as LN and vice versa), these are now added on the
6998 grounds that if an object has a name we should be able to
6999 look it up. Finally added warning output when duplicate
7000 short or long names are found.
7003 *) Changes needed for Tandem NSK.
7004 [Scott Uroff <scott@xypro.com>]
7006 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
7007 RSA_padding_check_SSLv23(), special padding was never detected
7008 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
7009 version rollback attacks was not effective.
7011 In s23_clnt.c, don't use special rollback-attack detection padding
7012 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
7013 client; similarly, in s23_srvr.c, don't do the rollback check if
7014 SSL 2.0 is the only protocol enabled in the server.
7017 *) Make it possible to get hexdumps of unprintable data with 'openssl
7018 asn1parse'. By implication, the functions ASN1_parse_dump() and
7019 BIO_dump_indent() are added.
7022 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
7023 these print out strings and name structures based on various
7024 flags including RFC2253 support and proper handling of
7025 multibyte characters. Added options to the 'x509' utility
7026 to allow the various flags to be set.
7029 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
7030 Also change the functions X509_cmp_current_time() and
7031 X509_gmtime_adj() work with an ASN1_TIME structure,
7032 this will enable certificates using GeneralizedTime in validity
7033 dates to be checked.
7036 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid
7037 negative public key encodings) on by default,
7038 NO_NEG_PUBKEY_BUG can be set to disable it.
7041 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
7042 content octets. An i2c_ASN1_OBJECT is unnecessary because
7043 the encoding can be trivially obtained from the structure.
7046 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
7047 not read locks (CRYPTO_r_[un]lock).
7050 *) A first attempt at creating official support for shared
7051 libraries through configuration. I've kept it so the
7052 default is static libraries only, and the OpenSSL programs
7053 are always statically linked for now, but there are
7054 preparations for dynamic linking in place.
7055 This has been tested on Linux and Tru64.
7058 *) Randomness polling function for Win9x, as described in:
7059 Peter Gutmann, Software Generation of Practically Strong
7063 *) Fix so PRNG is seeded in req if using an already existing
7067 *) New options to smime application. -inform and -outform
7068 allow alternative formats for the S/MIME message including
7069 PEM and DER. The -content option allows the content to be
7070 specified separately. This should allow things like Netscape
7071 form signing output easier to verify.
7074 *) Fix the ASN1 encoding of tags using the 'long form'.
7077 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
7078 STRING types. These convert content octets to and from the
7079 underlying type. The actual tag and length octets are
7080 already assumed to have been read in and checked. These
7081 are needed because all other string types have virtually
7082 identical handling apart from the tag. By having versions
7083 of the ASN1 functions that just operate on content octets
7084 IMPLICIT tagging can be handled properly. It also allows
7085 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
7086 and ASN1_INTEGER are identical apart from the tag.
7089 *) Change the handling of OID objects as follows:
7091 - New object identifiers are inserted in objects.txt, following
7092 the syntax given in objects.README.
7093 - objects.pl is used to process obj_mac.num and create a new
7095 - obj_dat.pl is used to create a new obj_dat.h, using the data in
7098 This is currently kind of a hack, and the perl code in objects.pl
7099 isn't very elegant, but it works as I intended. The simplest way
7100 to check that it worked correctly is to look in obj_dat.h and
7101 check the array nid_objs and make sure the objects haven't moved
7102 around (this is important!). Additions are OK, as well as
7103 consistent name changes.
7106 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
7109 *) Addition of the command line parameter '-rand file' to 'openssl req'.
7110 The given file adds to whatever has already been seeded into the
7111 random pool through the RANDFILE configuration file option or
7112 environment variable, or the default random state file.
7115 *) mkstack.pl now sorts each macro group into lexical order.
7116 Previously the output order depended on the order the files
7117 appeared in the directory, resulting in needless rewriting
7121 *) Patches to make OpenSSL compile under Win32 again. Mostly
7122 work arounds for the VC++ problem that it treats func() as
7123 func(void). Also stripped out the parts of mkdef.pl that
7124 added extra typesafe functions: these no longer exist.
7127 *) Reorganisation of the stack code. The macros are now all
7128 collected in safestack.h . Each macro is defined in terms of
7129 a "stack macro" of the form SKM_<name>(type, a, b). The
7130 DEBUG_SAFESTACK is now handled in terms of function casts,
7131 this has the advantage of retaining type safety without the
7132 use of additional functions. If DEBUG_SAFESTACK is not defined
7133 then the non typesafe macros are used instead. Also modified the
7134 mkstack.pl script to handle the new form. Needs testing to see
7135 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
7136 the default if no major problems. Similar behaviour for ASN1_SET_OF
7137 and PKCS12_STACK_OF.
7140 *) When some versions of IIS use the 'NET' form of private key the
7141 key derivation algorithm is different. Normally MD5(password) is
7142 used as a 128 bit RC4 key. In the modified case
7143 MD5(MD5(password) + "SGCKEYSALT") is used insted. Added some
7144 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
7145 as the old Netscape_RSA functions except they have an additional
7146 'sgckey' parameter which uses the modified algorithm. Also added
7147 an -sgckey command line option to the rsa utility. Thanks to
7148 Adrian Peck <bertie@ncipher.com> for posting details of the modified
7149 algorithm to openssl-dev.
7152 *) The evp_local.h macros were using 'c.##kname' which resulted in
7153 invalid expansion on some systems (SCO 5.0.5 for example).
7154 Corrected to 'c.kname'.
7155 [Phillip Porch <root@theporch.com>]
7157 *) New X509_get1_email() and X509_REQ_get1_email() functions that return
7158 a STACK of email addresses from a certificate or request, these look
7159 in the subject name and the subject alternative name extensions and
7160 omit any duplicate addresses.
7163 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows.
7164 This makes DSA verification about 2 % faster.
7167 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
7168 (meaning that now 2^5 values will be precomputed, which is only 4 KB
7169 plus overhead for 1024 bit moduli).
7170 This makes exponentiations about 0.5 % faster for 1024 bit
7171 exponents (as measured by "openssl speed rsa2048").
7174 *) Rename memory handling macros to avoid conflicts with other
7176 Malloc => OPENSSL_malloc
7177 Malloc_locked => OPENSSL_malloc_locked
7178 Realloc => OPENSSL_realloc
7179 Free => OPENSSL_free
7182 *) New function BN_mod_exp_mont_word for small bases (roughly 15%
7183 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
7186 *) CygWin32 support.
7187 [John Jarvie <jjarvie@newsguy.com>]
7189 *) The type-safe stack code has been rejigged. It is now only compiled
7190 in when OpenSSL is configured with the DEBUG_SAFESTACK option and
7191 by default all type-specific stack functions are "#define"d back to
7192 standard stack functions. This results in more streamlined output
7193 but retains the type-safety checking possibilities of the original
7197 *) The STACK code has been cleaned up, and certain type declarations
7198 that didn't make a lot of sense have been brought in line. This has
7199 also involved a cleanup of sorts in safestack.h to more correctly
7200 map type-safe stack functions onto their plain stack counterparts.
7201 This work has also resulted in a variety of "const"ifications of
7202 lots of the code, especially "_cmp" operations which should normally
7203 be prototyped with "const" parameters anyway.
7206 *) When generating bytes for the first time in md_rand.c, 'stir the pool'
7207 by seeding with STATE_SIZE dummy bytes (with zero entropy count).
7208 (The PRNG state consists of two parts, the large pool 'state' and 'md',
7209 where all of 'md' is used each time the PRNG is used, but 'state'
7210 is used only indexed by a cyclic counter. As entropy may not be
7211 well distributed from the beginning, 'md' is important as a
7212 chaining variable. However, the output function chains only half
7213 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
7214 all of 'md', and seeding with STATE_SIZE dummy bytes will result
7215 in all of 'state' being rewritten, with the new values depending
7216 on virtually all of 'md'. This overcomes the 80 bit limitation.)
7219 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
7220 the handshake is continued after ssl_verify_cert_chain();
7221 otherwise, if SSL_VERIFY_NONE is set, remaining error codes
7222 can lead to 'unexplainable' connection aborts later.
7223 [Bodo Moeller; problem tracked down by Lutz Jaenicke]
7225 *) Major EVP API cipher revision.
7226 Add hooks for extra EVP features. This allows various cipher
7227 parameters to be set in the EVP interface. Support added for variable
7228 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
7229 setting of RC2 and RC5 parameters.
7231 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
7234 Remove lots of duplicated code from the EVP library. For example *every*
7235 cipher init() function handles the 'iv' in the same way according to the
7236 cipher mode. They also all do nothing if the 'key' parameter is NULL and
7237 for CFB and OFB modes they zero ctx->num.
7239 New functionality allows removal of S/MIME code RC2 hack.
7241 Most of the routines have the same form and so can be declared in terms
7244 By shifting this to the top level EVP_CipherInit() it can be removed from
7245 all individual ciphers. If the cipher wants to handle IVs or keys
7246 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
7249 Change lots of functions like EVP_EncryptUpdate() to now return a
7250 value: although software versions of the algorithms cannot fail
7251 any installed hardware versions can.
7254 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
7255 this option is set, tolerate broken clients that send the negotiated
7256 protocol version number instead of the requested protocol version
7260 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag;
7261 i.e. non-zero for export ciphersuites, zero otherwise.
7262 Previous versions had this flag inverted, inconsistent with
7263 rsa_tmp_cb (..._TMP_RSA_CB).
7264 [Bodo Moeller; problem reported by Amit Chopra]
7266 *) Add missing DSA library text string. Work around for some IIS
7267 key files with invalid SEQUENCE encoding.
7270 *) Add a document (doc/standards.txt) that list all kinds of standards
7271 and so on that are implemented in OpenSSL.
7274 *) Enhance c_rehash script. Old version would mishandle certificates
7275 with the same subject name hash and wouldn't handle CRLs at all.
7276 Added -fingerprint option to crl utility, to support new c_rehash
7280 *) Eliminate non-ANSI declarations in crypto.h and stack.h.
7283 *) Fix for SSL server purpose checking. Server checking was
7284 rejecting certificates which had extended key usage present
7285 but no ssl client purpose.
7286 [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>]
7288 *) Make PKCS#12 code work with no password. The PKCS#12 spec
7289 is a little unclear about how a blank password is handled.
7290 Since the password in encoded as a BMPString with terminating
7291 double NULL a zero length password would end up as just the
7292 double NULL. However no password at all is different and is
7293 handled differently in the PKCS#12 key generation code. NS
7294 treats a blank password as zero length. MSIE treats it as no
7295 password on export: but it will try both on import. We now do
7296 the same: PKCS12_parse() tries zero length and no password if
7297 the password is set to "" or NULL (NULL is now a valid password:
7298 it wasn't before) as does the pkcs12 application.
7301 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
7302 perror when PEM_read_bio_X509_REQ fails, the error message must
7303 be obtained from the error queue.
7306 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
7307 it in ERR_remove_state if appropriate, and change ERR_get_state
7308 accordingly to avoid race conditions (this is necessary because
7309 thread_hash is no longer constant once set).
7312 *) Bugfix for linux-elf makefile.one.
7315 *) RSA_get_default_method() will now cause a default
7316 RSA_METHOD to be chosen if one doesn't exist already.
7317 Previously this was only set during a call to RSA_new()
7318 or RSA_new_method(NULL) meaning it was possible for
7319 RSA_get_default_method() to return NULL.
7322 *) Added native name translation to the existing DSO code
7323 that will convert (if the flag to do so is set) filenames
7324 that are sufficiently small and have no path information
7325 into a canonical native form. Eg. "blah" converted to
7326 "libblah.so" or "blah.dll" etc.
7329 *) New function ERR_error_string_n(e, buf, len) which is like
7330 ERR_error_string(e, buf), but writes at most 'len' bytes
7331 including the 0 terminator. For ERR_error_string_n, 'buf'
7333 [Damien Miller <djm@mindrot.org>, Bodo Moeller]
7335 *) CONF library reworked to become more general. A new CONF
7336 configuration file reader "class" is implemented as well as a
7337 new functions (NCONF_*, for "New CONF") to handle it. The now
7338 old CONF_* functions are still there, but are reimplemented to
7339 work in terms of the new functions. Also, a set of functions
7340 to handle the internal storage of the configuration data is
7341 provided to make it easier to write new configuration file
7342 reader "classes" (I can definitely see something reading a
7343 configuration file in XML format, for example), called _CONF_*,
7344 or "the configuration storage API"...
7346 The new configuration file reading functions are:
7348 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
7349 NCONF_get_section, NCONF_get_string, NCONF_get_numbre
7351 NCONF_default, NCONF_WIN32
7353 NCONF_dump_fp, NCONF_dump_bio
7355 NCONF_default and NCONF_WIN32 are method (or "class") choosers,
7356 NCONF_new creates a new CONF object. This works in the same way
7357 as other interfaces in OpenSSL, like the BIO interface.
7358 NCONF_dump_* dump the internal storage of the configuration file,
7359 which is useful for debugging. All other functions take the same
7360 arguments as the old CONF_* functions wth the exception of the
7361 first that must be a `CONF *' instead of a `LHASH *'.
7363 To make it easer to use the new classes with the old CONF_* functions,
7364 the function CONF_set_default_method is provided.
7367 *) Add '-tls1' option to 'openssl ciphers', which was already
7368 mentioned in the documentation but had not been implemented.
7369 (This option is not yet really useful because even the additional
7370 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
7373 *) Initial DSO code added into libcrypto for letting OpenSSL (and
7374 OpenSSL-based applications) load shared libraries and bind to
7375 them in a portable way.
7376 [Geoff Thorpe, with contributions from Richard Levitte]
7378 Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
7380 *) Make sure _lrotl and _lrotr are only used with MSVC.
7382 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
7383 (the default implementation of RAND_status).
7385 *) Rename openssl x509 option '-crlext', which was added in 0.9.5,
7386 to '-clrext' (= clear extensions), as intended and documented.
7387 [Bodo Moeller; inconsistency pointed out by Michael Attili
7390 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length
7391 was larger than the MD block size.
7392 [Steve Henson, pointed out by Yost William <YostW@tce.com>]
7394 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
7395 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
7396 using the passed key: if the passed key was a private key the result
7397 of X509_print(), for example, would be to print out all the private key
7401 *) des_quad_cksum() byte order bug fix.
7402 [Ulf Möller, using the problem description in krb4-0.9.7, where
7403 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>]
7405 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
7407 [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>]
7409 *) For easily testing in shell scripts whether some command
7410 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
7411 returns with exit code 0 iff no command of the given name is available.
7412 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
7413 the output goes to stdout and nothing is printed to stderr.
7414 Additional arguments are always ignored.
7416 Since for each cipher there is a command of the same name,
7417 the 'no-cipher' compilation switches can be tested this way.
7419 ('openssl no-XXX' is not able to detect pseudo-commands such
7420 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
7423 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
7426 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
7427 is set; it will be thrown away anyway because each handshake creates
7429 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
7430 to parameters -- in previous versions (since OpenSSL 0.9.3) the
7431 'default key' from SSL_CTX_set_tmp_dh would always be lost, meanining
7432 you effectivly got SSL_OP_SINGLE_DH_USE when using this macro.
7435 *) New s_client option -ign_eof: EOF at stdin is ignored, and
7436 'Q' and 'R' lose their special meanings (quit/renegotiate).
7437 This is part of what -quiet does; unlike -quiet, -ign_eof
7438 does not suppress any output.
7441 *) Add compatibility options to the purpose and trust code. The
7442 purpose X509_PURPOSE_ANY is "any purpose" which automatically
7443 accepts a certificate or CA, this was the previous behaviour,
7444 with all the associated security issues.
7446 X509_TRUST_COMPAT is the old trust behaviour: only and
7447 automatically trust self signed roots in certificate store. A
7448 new trust setting X509_TRUST_DEFAULT is used to specify that
7449 a purpose has no associated trust setting and it should instead
7450 use the value in the default purpose.
7453 *) Fix the PKCS#8 DSA private key code so it decodes keys again
7454 and fix a memory leak.
7457 *) In util/mkerr.pl (which implements 'make errors'), preserve
7458 reason strings from the previous version of the .c file, as
7459 the default to have only downcase letters (and digits) in
7460 automatically generated reasons codes is not always appropriate.
7463 *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
7464 using strerror. Previously, ERR_reason_error_string() returned
7465 library names as reason strings for SYSerr; but SYSerr is a special
7466 case where small numbers are errno values, not library numbers.
7469 *) Add '-dsaparam' option to 'openssl dhparam' application. This
7470 converts DSA parameters into DH parameters. (When creating parameters,
7471 DSA_generate_parameters is used.)
7474 *) Include 'length' (recommended exponent length) in C code generated
7475 by 'openssl dhparam -C'.
7478 *) The second argument to set_label in perlasm was already being used
7479 so couldn't be used as a "file scope" flag. Moved to third argument
7483 *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
7484 instead of RAND_bytes for encryption IVs and salts.
7487 *) Include RAND_status() into RAND_METHOD instead of implementing
7488 it only for md_rand.c Otherwise replacing the PRNG by calling
7489 RAND_set_rand_method would be impossible.
7492 *) Don't let DSA_generate_key() enter an infinite loop if the random
7493 number generation fails.
7496 *) New 'rand' application for creating pseudo-random output.
7499 *) Added configuration support for Linux/IA64
7500 [Rolf Haberrecker <rolf@suse.de>]
7502 *) Assembler module support for Mingw32.
7505 *) Shared library support for HPUX (in shlib/).
7506 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous]
7508 *) Shared library support for Solaris gcc.
7509 [Lutz Behnke <behnke@trustcenter.de>]
7511 Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
7513 *) PKCS7_encrypt() was adding text MIME headers twice because they
7514 were added manually and by SMIME_crlf_copy().
7517 *) In bntest.c don't call BN_rand with zero bits argument.
7518 [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>]
7520 *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
7521 case was implemented. This caused BN_div_recp() to fail occasionally.
7524 *) Add an optional second argument to the set_label() in the perl
7525 assembly language builder. If this argument exists and is set
7526 to 1 it signals that the assembler should use a symbol whose
7527 scope is the entire file, not just the current function. This
7528 is needed with MASM which uses the format label:: for this scope.
7529 [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>]
7531 *) Change the ASN1 types so they are typedefs by default. Before
7532 almost all types were #define'd to ASN1_STRING which was causing
7533 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
7537 *) Change names of new functions to the new get1/get0 naming
7538 convention: After 'get1', the caller owns a reference count
7539 and has to call ..._free; 'get0' returns a pointer to some
7540 data structure without incrementing reference counters.
7541 (Some of the existing 'get' functions increment a reference
7542 counter, some don't.)
7543 Similarly, 'set1' and 'add1' functions increase reference
7544 counters or duplicate objects.
7547 *) Allow for the possibility of temp RSA key generation failure:
7548 the code used to assume it always worked and crashed on failure.
7551 *) Fix potential buffer overrun problem in BIO_printf().
7552 [Ulf Möller, using public domain code by Patrick Powell; problem
7553 pointed out by David Sacerdote <das33@cornell.edu>]
7555 *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions
7556 RAND_egd() and RAND_status(). In the command line application,
7557 the EGD socket can be specified like a seed file using RANDFILE
7561 *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
7562 Some CAs (e.g. Verisign) distribute certificates in this form.
7565 *) Remove the SSL_ALLOW_ADH compile option and set the default cipher
7566 list to exclude them. This means that no special compilation option
7567 is needed to use anonymous DH: it just needs to be included in the
7571 *) Change the EVP_MD_CTX_type macro so its meaning consistent with
7572 EVP_MD_type. The old functionality is available in a new macro called
7573 EVP_MD_md(). Change code that uses it and update docs.
7576 *) ..._ctrl functions now have corresponding ..._callback_ctrl functions
7577 where the 'void *' argument is replaced by a function pointer argument.
7578 Previously 'void *' was abused to point to functions, which works on
7579 many platforms, but is not correct. As these functions are usually
7580 called by macros defined in OpenSSL header files, most source code
7581 should work without changes.
7584 *) <openssl/opensslconf.h> (which is created by Configure) now contains
7585 sections with information on -D... compiler switches used for
7586 compiling the library so that applications can see them. To enable
7587 one of these sections, a pre-processor symbol OPENSSL_..._DEFINES
7588 must be defined. E.g.,
7589 #define OPENSSL_ALGORITHM_DEFINES
7590 #include <openssl/opensslconf.h>
7591 defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc.
7592 [Richard Levitte, Ulf and Bodo Möller]
7594 *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
7598 *) Change the 'other' type in certificate aux info to a STACK_OF
7599 X509_ALGOR. Although not an AlgorithmIdentifier as such it has
7600 the required ASN1 format: arbitrary types determined by an OID.
7603 *) Add some PEM_write_X509_REQ_NEW() functions and a command line
7604 argument to 'req'. This is not because the function is newer or
7605 better than others it just uses the work 'NEW' in the certificate
7606 request header lines. Some software needs this.
7609 *) Reorganise password command line arguments: now passwords can be
7610 obtained from various sources. Delete the PEM_cb function and make
7611 it the default behaviour: i.e. if the callback is NULL and the
7612 usrdata argument is not NULL interpret it as a null terminated pass
7613 phrase. If usrdata and the callback are NULL then the pass phrase
7614 is prompted for as usual.
7617 *) Add support for the Compaq Atalla crypto accelerator. If it is installed,
7618 the support is automatically enabled. The resulting binaries will
7619 autodetect the card and use it if present.
7620 [Ben Laurie and Compaq Inc.]
7622 *) Work around for Netscape hang bug. This sends certificate request
7623 and server done in one record. Since this is perfectly legal in the
7624 SSL/TLS protocol it isn't a "bug" option and is on by default. See
7625 the bugs/SSLv3 entry for more info.
7628 *) HP-UX tune-up: new unified configs, HP C compiler bug workaround.
7631 *) Add -rand argument to smime and pkcs12 applications and read/write
7635 *) New 'passwd' tool for crypt(3) and apr1 password hashes.
7638 *) Add command line password options to the remaining applications.
7641 *) Bug fix for BN_div_recp() for numerators with an even number of
7645 *) More tests in bntest.c, and changed test_bn output.
7648 *) ./config recognizes MacOS X now.
7651 *) Bug fix for BN_div() when the first words of num and divsor are
7652 equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0).
7655 *) Add support for various broken PKCS#8 formats, and command line
7656 options to produce them.
7659 *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
7660 get temporary BIGNUMs from a BN_CTX.
7663 *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
7667 *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and
7668 include a #define from the old name to the new. The original intent
7669 was that statically linked binaries could for example just call
7670 SSLeay_add_all_ciphers() to just add ciphers to the table and not
7671 link with digests. This never worked becayse SSLeay_add_all_digests()
7672 and SSLeay_add_all_ciphers() were in the same source file so calling
7673 one would link with the other. They are now in separate source files.
7676 *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
7679 *) Use a less unusual form of the Miller-Rabin primality test (it used
7680 a binary algorithm for exponentiation integrated into the Miller-Rabin
7681 loop, our standard modexp algorithms are faster).
7684 *) Support for the EBCDIC character set completed.
7685 [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>]
7687 *) Source code cleanups: use const where appropriate, eliminate casts,
7688 use void * instead of char * in lhash.
7691 *) Bugfix: ssl3_send_server_key_exchange was not restartable
7692 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
7693 this the server could overwrite ephemeral keys that the client
7697 *) Turn DSA_is_prime into a macro that calls BN_is_prime,
7698 using 50 iterations of the Rabin-Miller test.
7700 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
7701 iterations of the Rabin-Miller test as required by the appendix
7702 to FIPS PUB 186[-1]) instead of DSA_is_prime.
7703 As BN_is_prime_fasttest includes trial division, DSA parameter
7704 generation becomes much faster.
7706 This implies a change for the callback functions in DSA_is_prime
7707 and DSA_generate_parameters: The callback function is called once
7708 for each positive witness in the Rabin-Miller test, not just
7709 occasionally in the inner loop; and the parameters to the
7710 callback function now provide an iteration count for the outer
7711 loop rather than for the current invocation of the inner loop.
7712 DSA_generate_parameters additionally can call the callback
7713 function with an 'iteration count' of -1, meaning that a
7714 candidate has passed the trial division test (when q is generated
7715 from an application-provided seed, trial division is skipped).
7718 *) New function BN_is_prime_fasttest that optionally does trial
7719 division before starting the Rabin-Miller test and has
7720 an additional BN_CTX * argument (whereas BN_is_prime always
7721 has to allocate at least one BN_CTX).
7722 'callback(1, -1, cb_arg)' is called when a number has passed the
7723 trial division stage.
7726 *) Fix for bug in CRL encoding. The validity dates weren't being handled
7730 *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
7733 *) New function BN_pseudo_rand().
7736 *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
7737 bignum version of BN_from_montgomery() with the working code from
7738 SSLeay 0.9.0 (the word based version is faster anyway), and clean up
7742 *) Avoid a race condition in s2_clnt.c (function get_server_hello) that
7743 made it impossible to use the same SSL_SESSION data structure in
7744 SSL2 clients in multiple threads.
7747 *) The return value of RAND_load_file() no longer counts bytes obtained
7748 by stat(). RAND_load_file(..., -1) is new and uses the complete file
7749 to seed the PRNG (previously an explicit byte count was required).
7750 [Ulf Möller, Bodo Möller]
7752 *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
7753 used (char *) instead of (void *) and had casts all over the place.
7756 *) Make BN_generate_prime() return NULL on error if ret!=NULL.
7759 *) Retain source code compatibility for BN_prime_checks macro:
7760 BN_is_prime(..., BN_prime_checks, ...) now uses
7761 BN_prime_checks_for_size to determine the appropriate number of
7762 Rabin-Miller iterations.
7765 *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
7766 DH_CHECK_P_NOT_SAFE_PRIME.
7767 (Check if this is true? OpenPGP calls them "strong".)
7770 *) Merge the functionality of "dh" and "gendh" programs into a new program
7771 "dhparam". The old programs are retained for now but will handle DH keys
7772 (instead of parameters) in future.
7775 *) Make the ciphers, s_server and s_client programs check the return values
7776 when a new cipher list is set.
7779 *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
7780 ciphers. Before when the 56bit ciphers were enabled the sorting was
7783 The syntax for the cipher sorting has been extended to support sorting by
7784 cipher-strength (using the strength_bits hard coded in the tables).
7785 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
7787 Fix a bug in the cipher-command parser: when supplying a cipher command
7788 string with an "undefined" symbol (neither command nor alphanumeric
7789 [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now
7790 an error is flagged.
7792 Due to the strength-sorting extension, the code of the
7793 ssl_create_cipher_list() function was completely rearranged. I hope that
7794 the readability was also increased :-)
7795 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
7797 *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1
7798 for the first serial number and places 2 in the serial number file. This
7799 avoids problems when the root CA is created with serial number zero and
7800 the first user certificate has the same issuer name and serial number
7804 *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
7805 the new code. Add documentation for this stuff.
7808 *) Changes to X509_ATTRIBUTE utilities. These have been renamed from
7809 X509_*() to X509at_*() on the grounds that they don't handle X509
7810 structures and behave in an analagous way to the X509v3 functions:
7811 they shouldn't be called directly but wrapper functions should be used
7814 So we also now have some wrapper functions that call the X509at functions
7815 when passed certificate requests. (TO DO: similar things can be done with
7816 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
7817 things. Some of these need some d2i or i2d and print functionality
7818 because they handle more complex structures.)
7821 *) Add missing #ifndefs that caused missing symbols when building libssl
7822 as a shared library without RSA. Use #ifndef NO_SSL2 instead of
7823 NO_RSA in ssl/s2*.c.
7824 [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller]
7826 *) Precautions against using the PRNG uninitialized: RAND_bytes() now
7827 has a return value which indicates the quality of the random data
7828 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
7829 error queue. New function RAND_pseudo_bytes() generates output that is
7830 guaranteed to be unique but not unpredictable. RAND_add is like
7831 RAND_seed, but takes an extra argument for an entropy estimate
7832 (RAND_seed always assumes full entropy).
7835 *) Do more iterations of Rabin-Miller probable prime test (specifically,
7836 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
7837 instead of only 2 for all lengths; see BN_prime_checks_for_size definition
7838 in crypto/bn/bn_prime.c for the complete table). This guarantees a
7839 false-positive rate of at most 2^-80 for random input.
7842 *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
7845 *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
7846 in the 0.9.5 release), this returns the chain
7847 from an X509_CTX structure with a dup of the stack and all
7848 the X509 reference counts upped: so the stack will exist
7849 after X509_CTX_cleanup() has been called. Modify pkcs12.c
7852 Also make SSL_SESSION_print() print out the verify return
7856 *) Add manpage for the pkcs12 command. Also change the default
7857 behaviour so MAC iteration counts are used unless the new
7858 -nomaciter option is used. This improves file security and
7859 only older versions of MSIE (4.0 for example) need it.
7862 *) Honor the no-xxx Configure options when creating .DEF files.
7865 *) Add PKCS#10 attributes to field table: challengePassword,
7866 unstructuredName and unstructuredAddress. These are taken from
7867 draft PKCS#9 v2.0 but are compatible with v1.2 provided no
7868 international characters are used.
7870 More changes to X509_ATTRIBUTE code: allow the setting of types
7871 based on strings. Remove the 'loc' parameter when adding
7872 attributes because these will be a SET OF encoding which is sorted
7876 *) Initial changes to the 'req' utility to allow request generation
7877 automation. This will allow an application to just generate a template
7878 file containing all the field values and have req construct the
7881 Initial support for X509_ATTRIBUTE handling. Stacks of these are
7882 used all over the place including certificate requests and PKCS#7
7883 structures. They are currently handled manually where necessary with
7884 some primitive wrappers for PKCS#7. The new functions behave in a
7885 manner analogous to the X509 extension functions: they allow
7886 attributes to be looked up by NID and added.
7888 Later something similar to the X509V3 code would be desirable to
7889 automatically handle the encoding, decoding and printing of the
7890 more complex types. The string types like challengePassword can
7891 be handled by the string table functions.
7893 Also modified the multi byte string table handling. Now there is
7894 a 'global mask' which masks out certain types. The table itself
7895 can use the flag STABLE_NO_MASK to ignore the mask setting: this
7896 is useful when for example there is only one permissible type
7897 (as in countryName) and using the mask might result in no valid
7901 *) Clean up 'Finished' handling, and add functions SSL_get_finished and
7902 SSL_get_peer_finished to allow applications to obtain the latest
7903 Finished messages sent to the peer or expected from the peer,
7904 respectively. (SSL_get_peer_finished is usually the Finished message
7905 actually received from the peer, otherwise the protocol will be aborted.)
7907 As the Finished message are message digests of the complete handshake
7908 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
7909 be used for external authentication procedures when the authentication
7910 provided by SSL/TLS is not desired or is not enough.
7913 *) Enhanced support for Alpha Linux is added. Now ./config checks if
7914 the host supports BWX extension and if Compaq C is present on the
7915 $PATH. Just exploiting of the BWX extension results in 20-30%
7916 performance kick for some algorithms, e.g. DES and RC4 to mention
7917 a couple. Compaq C in turn generates ~20% faster code for MD5 and
7921 *) Add support for MS "fast SGC". This is arguably a violation of the
7922 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
7923 weak crypto and after checking the certificate is SGC a second one
7924 with strong crypto. MS SGC stops the first handshake after receiving
7925 the server certificate message and sends a second client hello. Since
7926 a server will typically do all the time consuming operations before
7927 expecting any further messages from the client (server key exchange
7928 is the most expensive) there is little difference between the two.
7930 To get OpenSSL to support MS SGC we have to permit a second client
7931 hello message after we have sent server done. In addition we have to
7932 reset the MAC if we do get this second client hello.
7935 *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide
7936 if a DER encoded private key is RSA or DSA traditional format. Changed
7937 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
7938 format DER encoded private key. Newer code should use PKCS#8 format which
7939 has the key type encoded in the ASN1 structure. Added DER private key
7940 support to pkcs8 application.
7943 *) SSL 3/TLS 1 servers now don't request certificates when an anonymous
7944 ciphersuites has been selected (as required by the SSL 3/TLS 1
7945 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
7946 is set, we interpret this as a request to violate the specification
7947 (the worst that can happen is a handshake failure, and 'correct'
7948 behaviour would result in a handshake failure anyway).
7951 *) In SSL_CTX_add_session, take into account that there might be multiple
7952 SSL_SESSION structures with the same session ID (e.g. when two threads
7953 concurrently obtain them from an external cache).
7954 The internal cache can handle only one SSL_SESSION with a given ID,
7955 so if there's a conflict, we now throw out the old one to achieve
7959 *) Add OIDs for idea and blowfish in CBC mode. This will allow both
7960 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
7961 some routines that use cipher OIDs: some ciphers do not have OIDs
7962 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
7966 *) Simplify the trust setting structure and code. Now we just have
7967 two sequences of OIDs for trusted and rejected settings. These will
7968 typically have values the same as the extended key usage extension
7969 and any application specific purposes.
7971 The trust checking code now has a default behaviour: it will just
7972 check for an object with the same NID as the passed id. Functions can
7973 be provided to override either the default behaviour or the behaviour
7974 for a given id. SSL client, server and email already have functions
7975 in place for compatibility: they check the NID and also return "trusted"
7976 if the certificate is self signed.
7979 *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the
7980 traditional format into an EVP_PKEY structure.
7983 *) Add a password callback function PEM_cb() which either prompts for
7984 a password if usr_data is NULL or otherwise assumes it is a null
7985 terminated password. Allow passwords to be passed on command line
7986 environment or config files in a few more utilities.
7989 *) Add a bunch of DER and PEM functions to handle PKCS#8 format private
7990 keys. Add some short names for PKCS#8 PBE algorithms and allow them
7991 to be specified on the command line for the pkcs8 and pkcs12 utilities.
7992 Update documentation.
7995 *) Support for ASN1 "NULL" type. This could be handled before by using
7996 ASN1_TYPE but there wasn't any function that would try to read a NULL
7997 and produce an error if it couldn't. For compatibility we also have
7998 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
7999 don't allocate anything because they don't need to.
8002 *) Initial support for MacOS is now provided. Examine INSTALL.MacOS
8004 [Andy Polyakov, Roy Woods <roy@centicsystems.ca>]
8006 *) Rebuild of the memory allocation routines used by OpenSSL code and
8007 possibly others as well. The purpose is to make an interface that
8008 provide hooks so anyone can build a separate set of allocation and
8009 deallocation routines to be used by OpenSSL, for example memory
8010 pool implementations, or something else, which was previously hard
8011 since Malloc(), Realloc() and Free() were defined as macros having
8012 the values malloc, realloc and free, respectively (except for Win32
8013 compilations). The same is provided for memory debugging code.
8014 OpenSSL already comes with functionality to find memory leaks, but
8015 this gives people a chance to debug other memory problems.
8017 With these changes, a new set of functions and macros have appeared:
8019 CRYPTO_set_mem_debug_functions() [F]
8020 CRYPTO_get_mem_debug_functions() [F]
8021 CRYPTO_dbg_set_options() [F]
8022 CRYPTO_dbg_get_options() [F]
8023 CRYPTO_malloc_debug_init() [M]
8025 The memory debug functions are NULL by default, unless the library
8026 is compiled with CRYPTO_MDEBUG or friends is defined. If someone
8027 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
8028 gives the standard debugging functions that come with OpenSSL) or
8029 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
8030 provided by the library user) must be used. When the standard
8031 debugging functions are used, CRYPTO_dbg_set_options can be used to
8032 request additional information:
8033 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
8034 the CRYPTO_MDEBUG_xxx macro when compiling the library.
8036 Also, things like CRYPTO_set_mem_functions will always give the
8037 expected result (the new set of functions is used for allocation
8038 and deallocation) at all times, regardless of platform and compiler
8041 To finish it up, some functions that were never use in any other
8042 way than through macros have a new API and new semantic:
8045 CRYPTO_dbg_realloc()
8048 All macros of value have retained their old syntax.
8049 [Richard Levitte and Bodo Moeller]
8051 *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
8052 ordering of SMIMECapabilities wasn't in "strength order" and there
8053 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
8057 *) Some ASN1 types with illegal zero length encoding (INTEGER,
8058 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
8059 [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson]
8061 *) Merge in my S/MIME library for OpenSSL. This provides a simple
8062 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
8063 functionality to handle multipart/signed properly) and a utility
8064 called 'smime' to call all this stuff. This is based on code I
8065 originally wrote for Celo who have kindly allowed it to be
8066 included in OpenSSL.
8069 *) Add variants des_set_key_checked and des_set_key_unchecked of
8070 des_set_key (aka des_key_sched). Global variable des_check_key
8071 decides which of these is called by des_set_key; this way
8072 des_check_key behaves as it always did, but applications and
8073 the library itself, which was buggy for des_check_key == 1,
8074 have a cleaner way to pick the version they need.
8077 *) New function PKCS12_newpass() which changes the password of a
8081 *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and
8082 dynamic mix. In both cases the ids can be used as an index into the
8083 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
8084 functions so they accept a list of the field values and the
8085 application doesn't need to directly manipulate the X509_TRUST
8089 *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
8093 *) Modify the way the V3 extension code looks up extensions. This now
8094 works in a similar way to the object code: we have some "standard"
8095 extensions in a static table which is searched with OBJ_bsearch()
8096 and the application can add dynamic ones if needed. The file
8097 crypto/x509v3/ext_dat.h now has the info: this file needs to be
8098 updated whenever a new extension is added to the core code and kept
8099 in ext_nid order. There is a simple program 'tabtest.c' which checks
8100 this. New extensions are not added too often so this file can readily
8101 be maintained manually.
8103 There are two big advantages in doing things this way. The extensions
8104 can be looked up immediately and no longer need to be "added" using
8105 X509V3_add_standard_extensions(): this function now does nothing.
8106 [Side note: I get *lots* of email saying the extension code doesn't
8107 work because people forget to call this function]
8108 Also no dynamic allocation is done unless new extensions are added:
8109 so if we don't add custom extensions there is no need to call
8110 X509V3_EXT_cleanup().
8113 *) Modify enc utility's salting as follows: make salting the default. Add a
8114 magic header, so unsalted files fail gracefully instead of just decrypting
8115 to garbage. This is because not salting is a big security hole, so people
8116 should be discouraged from doing it.
8119 *) Fixes and enhancements to the 'x509' utility. It allowed a message
8120 digest to be passed on the command line but it only used this
8121 parameter when signing a certificate. Modified so all relevant
8122 operations are affected by the digest parameter including the
8123 -fingerprint and -x509toreq options. Also -x509toreq choked if a
8124 DSA key was used because it didn't fix the digest.
8127 *) Initial certificate chain verify code. Currently tests the untrusted
8128 certificates for consistency with the verify purpose (which is set
8129 when the X509_STORE_CTX structure is set up) and checks the pathlength.
8131 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
8132 this is because it will reject chains with invalid extensions whereas
8133 every previous version of OpenSSL and SSLeay made no checks at all.
8135 Trust code: checks the root CA for the relevant trust settings. Trust
8136 settings have an initial value consistent with the verify purpose: e.g.
8137 if the verify purpose is for SSL client use it expects the CA to be
8138 trusted for SSL client use. However the default value can be changed to
8139 permit custom trust settings: one example of this would be to only trust
8140 certificates from a specific "secure" set of CAs.
8142 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
8143 which should be used for version portability: especially since the
8144 verify structure is likely to change more often now.
8146 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
8147 to set them. If not set then assume SSL clients will verify SSL servers
8150 Two new options to the verify program: -untrusted allows a set of
8151 untrusted certificates to be passed in and -purpose which sets the
8152 intended purpose of the certificate. If a purpose is set then the
8153 new chain verify code is used to check extension consistency.
8156 *) Support for the authority information access extension.
8159 *) Modify RSA and DSA PEM read routines to transparently handle
8160 PKCS#8 format private keys. New *_PUBKEY_* functions that handle
8161 public keys in a format compatible with certificate
8162 SubjectPublicKeyInfo structures. Unfortunately there were already
8163 functions called *_PublicKey_* which used various odd formats so
8164 these are retained for compatibility: however the DSA variants were
8165 never in a public release so they have been deleted. Changed dsa/rsa
8166 utilities to handle the new format: note no releases ever handled public
8167 keys so we should be OK.
8169 The primary motivation for this change is to avoid the same fiasco
8170 that dogs private keys: there are several incompatible private key
8171 formats some of which are standard and some OpenSSL specific and
8172 require various evil hacks to allow partial transparent handling and
8173 even then it doesn't work with DER formats. Given the option anything
8174 other than PKCS#8 should be dumped: but the other formats have to
8175 stay in the name of compatibility.
8177 With public keys and the benefit of hindsight one standard format
8178 is used which works with EVP_PKEY, RSA or DSA structures: though
8179 it clearly returns an error if you try to read the wrong kind of key.
8181 Added a -pubkey option to the 'x509' utility to output the public key.
8182 Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*()
8183 (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add
8184 EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*())
8185 that do the same as the EVP_PKEY_assign_*() except they up the
8186 reference count of the added key (they don't "swallow" the
8190 *) Fixes to crypto/x509/by_file.c the code to read in certificates and
8191 CRLs would fail if the file contained no certificates or no CRLs:
8192 added a new function to read in both types and return the number
8193 read: this means that if none are read it will be an error. The
8194 DER versions of the certificate and CRL reader would always fail
8195 because it isn't possible to mix certificates and CRLs in DER format
8196 without choking one or the other routine. Changed this to just read
8197 a certificate: this is the best we can do. Also modified the code
8198 in apps/verify.c to take notice of return codes: it was previously
8199 attempting to read in certificates from NULL pointers and ignoring
8200 any errors: this is one reason why the cert and CRL reader seemed
8201 to work. It doesn't check return codes from the default certificate
8202 routines: these may well fail if the certificates aren't installed.
8205 *) Code to support otherName option in GeneralName.
8208 *) First update to verify code. Change the verify utility
8209 so it warns if it is passed a self signed certificate:
8210 for consistency with the normal behaviour. X509_verify
8211 has been modified to it will now verify a self signed
8212 certificate if *exactly* the same certificate appears
8213 in the store: it was previously impossible to trust a
8214 single self signed certificate. This means that:
8215 openssl verify ss.pem
8216 now gives a warning about a self signed certificate but
8217 openssl verify -CAfile ss.pem ss.pem
8221 *) For servers, store verify_result in SSL_SESSION data structure
8222 (and add it to external session representation).
8223 This is needed when client certificate verifications fails,
8224 but an application-provided verification callback (set by
8225 SSL_CTX_set_cert_verify_callback) allows accepting the session
8226 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
8227 but returns 1): When the session is reused, we have to set
8228 ssl->verify_result to the appropriate error code to avoid
8230 [Bodo Moeller, problem pointed out by Lutz Jaenicke]
8232 *) Fix a bug in the new PKCS#7 code: it didn't consider the
8233 case in PKCS7_dataInit() where the signed PKCS7 structure
8234 didn't contain any existing data because it was being created.
8235 [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson]
8237 *) Add a salt to the key derivation routines in enc.c. This
8238 forms the first 8 bytes of the encrypted file. Also add a
8239 -S option to allow a salt to be input on the command line.
8242 *) New function X509_cmp(). Oddly enough there wasn't a function
8243 to compare two certificates. We do this by working out the SHA1
8244 hash and comparing that. X509_cmp() will be needed by the trust
8248 *) SSL_get1_session() is like SSL_get_session(), but increments
8249 the reference count in the SSL_SESSION returned.
8250 [Geoff Thorpe <geoff@eu.c2.net>]
8252 *) Fix for 'req': it was adding a null to request attributes.
8253 Also change the X509_LOOKUP and X509_INFO code to handle
8254 certificate auxiliary information.
8257 *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document
8261 *) Add the possibility to add extra information to the memory leak
8262 detecting output, to form tracebacks, showing from where each
8263 allocation was originated: CRYPTO_push_info("constant string") adds
8264 the string plus current file name and line number to a per-thread
8265 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
8266 is like calling CYRPTO_pop_info() until the stack is empty.
8267 Also updated memory leak detection code to be multi-thread-safe.
8270 *) Add options -text and -noout to pkcs7 utility and delete the
8271 encryption options which never did anything. Update docs.
8274 *) Add options to some of the utilities to allow the pass phrase
8275 to be included on either the command line (not recommended on
8276 OSes like Unix) or read from the environment. Update the
8277 manpages and fix a few bugs.
8280 *) Add a few manpages for some of the openssl commands.
8283 *) Fix the -revoke option in ca. It was freeing up memory twice,
8284 leaking and not finding already revoked certificates.
8287 *) Extensive changes to support certificate auxiliary information.
8288 This involves the use of X509_CERT_AUX structure and X509_AUX
8289 functions. An X509_AUX function such as PEM_read_X509_AUX()
8290 can still read in a certificate file in the usual way but it
8291 will also read in any additional "auxiliary information". By
8292 doing things this way a fair degree of compatibility can be
8293 retained: existing certificates can have this information added
8294 using the new 'x509' options.
8296 Current auxiliary information includes an "alias" and some trust
8297 settings. The trust settings will ultimately be used in enhanced
8298 certificate chain verification routines: currently a certificate
8299 can only be trusted if it is self signed and then it is trusted
8303 *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD).
8304 The problem was that one of the replacement routines had not been working
8305 since SSLeay releases. For now the offending routine has been replaced
8306 with non-optimised assembler. Even so, this now gives around 95%
8307 performance improvement for 1024 bit RSA signs.
8310 *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2
8311 handling. Most clients have the effective key size in bits equal to
8312 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
8313 A few however don't do this and instead use the size of the decrypted key
8314 to determine the RC2 key length and the AlgorithmIdentifier to determine
8315 the effective key length. In this case the effective key length can still
8316 be 40 bits but the key length can be 168 bits for example. This is fixed
8317 by manually forcing an RC2 key into the EVP_PKEY structure because the
8318 EVP code can't currently handle unusual RC2 key sizes: it always assumes
8319 the key length and effective key length are equal.
8322 *) Add a bunch of functions that should simplify the creation of
8323 X509_NAME structures. Now you should be able to do:
8324 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
8325 and have it automatically work out the correct field type and fill in
8326 the structures. The more adventurous can try:
8327 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
8328 and it will (hopefully) work out the correct multibyte encoding.
8331 *) Change the 'req' utility to use the new field handling and multibyte
8332 copy routines. Before the DN field creation was handled in an ad hoc
8333 way in req, ca, and x509 which was rather broken and didn't support
8334 BMPStrings or UTF8Strings. Since some software doesn't implement
8335 BMPStrings or UTF8Strings yet, they can be enabled using the config file
8336 using the dirstring_type option. See the new comment in the default
8337 openssl.cnf for more info.
8340 *) Make crypto/rand/md_rand.c more robust:
8341 - Assure unique random numbers after fork().
8342 - Make sure that concurrent threads access the global counter and
8343 md serializably so that we never lose entropy in them
8344 or use exactly the same state in multiple threads.
8345 Access to the large state is not always serializable because
8346 the additional locking could be a performance killer, and
8347 md should be large enough anyway.
8350 *) New file apps/app_rand.c with commonly needed functionality
8351 for handling the random seed file.
8353 Use the random seed file in some applications that previously did not:
8355 dsaparam -genkey (which also ignored its '-rand' option),
8358 x509 (when signing).
8359 Except on systems with /dev/urandom, it is crucial to have a random
8360 seed file at least for key creation, DSA signing, and for DH exchanges;
8361 for RSA signatures we could do without one.
8363 gendh and gendsa (unlike genrsa) used to read only the first byte
8364 of each file listed in the '-rand' option. The function as previously
8365 found in genrsa is now in app_rand.c and is used by all programs
8366 that support '-rand'.
8369 *) In RAND_write_file, use mode 0600 for creating files;
8370 don't just chmod when it may be too late.
8373 *) Report an error from X509_STORE_load_locations
8374 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
8377 *) New function ASN1_mbstring_copy() this copies a string in either
8378 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
8379 into an ASN1_STRING type. A mask of permissible types is passed
8380 and it chooses the "minimal" type to use or an error if not type
8384 *) Add function equivalents to the various macros in asn1.h. The old
8385 macros are retained with an M_ prefix. Code inside the library can
8386 use the M_ macros. External code (including the openssl utility)
8387 should *NOT* in order to be "shared library friendly".
8390 *) Add various functions that can check a certificate's extensions
8391 to see if it usable for various purposes such as SSL client,
8392 server or S/MIME and CAs of these types. This is currently
8393 VERY EXPERIMENTAL but will ultimately be used for certificate chain
8394 verification. Also added a -purpose flag to x509 utility to
8395 print out all the purposes.
8398 *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated
8402 *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search
8403 for, obtain and decode and extension and obtain its critical flag.
8404 This allows all the necessary extension code to be handled in a
8405 single function call.
8408 *) RC4 tune-up featuring 30-40% performance improvement on most RISC
8409 platforms. See crypto/rc4/rc4_enc.c for further details.
8412 *) New -noout option to asn1parse. This causes no output to be produced
8413 its main use is when combined with -strparse and -out to extract data
8414 from a file (which may not be in ASN.1 format).
8417 *) Fix for pkcs12 program. It was hashing an invalid certificate pointer
8418 when producing the local key id.
8419 [Richard Levitte <levitte@stacken.kth.se>]
8421 *) New option -dhparam in s_server. This allows a DH parameter file to be
8422 stated explicitly. If it is not stated then it tries the first server
8423 certificate file. The previous behaviour hard coded the filename
8427 *) Add -pubin and -pubout options to the rsa and dsa commands. These allow
8428 a public key to be input or output. For example:
8429 openssl rsa -in key.pem -pubout -out pubkey.pem
8430 Also added necessary DSA public key functions to handle this.
8433 *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
8434 in the message. This was handled by allowing
8435 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
8436 [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>]
8438 *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
8439 to the end of the strings whereas this didn't. This would cause problems
8440 if strings read with d2i_ASN1_bytes() were later modified.
8441 [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>]
8443 *) Fix for base64 decode bug. When a base64 bio reads only one line of
8444 data and it contains EOF it will end up returning an error. This is
8445 caused by input 46 bytes long. The cause is due to the way base64
8446 BIOs find the start of base64 encoded data. They do this by trying a
8447 trial decode on each line until they find one that works. When they
8448 do a flag is set and it starts again knowing it can pass all the
8449 data directly through the decoder. Unfortunately it doesn't reset
8450 the context it uses. This means that if EOF is reached an attempt
8451 is made to pass two EOFs through the context and this causes the
8452 resulting error. This can also cause other problems as well. As is
8453 usual with these problems it takes *ages* to find and the fix is
8454 trivial: move one line.
8455 [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ]
8457 *) Ugly workaround to get s_client and s_server working under Windows. The
8458 old code wouldn't work because it needed to select() on sockets and the
8459 tty (for keypresses and to see if data could be written). Win32 only
8460 supports select() on sockets so we select() with a 1s timeout on the
8461 sockets and then see if any characters are waiting to be read, if none
8462 are present then we retry, we also assume we can always write data to
8463 the tty. This isn't nice because the code then blocks until we've
8464 received a complete line of data and it is effectively polling the
8465 keyboard at 1s intervals: however it's quite a bit better than not
8466 working at all :-) A dedicated Windows application might handle this
8467 with an event loop for example.
8470 *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
8471 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
8472 will be called when RSA_sign() and RSA_verify() are used. This is useful
8473 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
8474 For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
8475 should *not* be used: RSA_sign() and RSA_verify() must be used instead.
8476 This necessitated the support of an extra signature type NID_md5_sha1
8477 for SSL signatures and modifications to the SSL library to use it instead
8478 of calling RSA_public_decrypt() and RSA_private_encrypt().
8481 *) Add new -verify -CAfile and -CApath options to the crl program, these
8482 will lookup a CRL issuers certificate and verify the signature in a
8483 similar way to the verify program. Tidy up the crl program so it
8484 no longer accesses structures directly. Make the ASN1 CRL parsing a bit
8485 less strict. It will now permit CRL extensions even if it is not
8486 a V2 CRL: this will allow it to tolerate some broken CRLs.
8489 *) Initialize all non-automatic variables each time one of the openssl
8490 sub-programs is started (this is necessary as they may be started
8491 multiple times from the "OpenSSL>" prompt).
8492 [Lennart Bang, Bodo Moeller]
8494 *) Preliminary compilation option RSA_NULL which disables RSA crypto without
8495 removing all other RSA functionality (this is what NO_RSA does). This
8496 is so (for example) those in the US can disable those operations covered
8497 by the RSA patent while allowing storage and parsing of RSA keys and RSA
8501 *) Non-copying interface to BIO pairs.
8502 (still largely untested)
8505 *) New function ANS1_tag2str() to convert an ASN1 tag to a descriptive
8506 ASCII string. This was handled independently in various places before.
8509 *) New functions UTF8_getc() and UTF8_putc() that parse and generate
8510 UTF8 strings a character at a time.
8513 *) Use client_version from client hello to select the protocol
8514 (s23_srvr.c) and for RSA client key exchange verification
8515 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
8518 *) Add various utility functions to handle SPKACs, these were previously
8519 handled by poking round in the structure internals. Added new function
8520 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
8521 print, verify and generate SPKACs. Based on an original idea from
8522 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
8525 *) RIPEMD160 is operational on all platforms and is back in 'make test'.
8528 *) Allow the config file extension section to be overwritten on the
8529 command line. Based on an original idea from Massimiliano Pala
8530 <madwolf@comune.modena.it>. The new option is called -extensions
8531 and can be applied to ca, req and x509. Also -reqexts to override
8532 the request extensions in req and -crlexts to override the crl extensions
8536 *) Add new feature to the SPKAC handling in ca. Now you can include
8537 the same field multiple times by preceding it by "XXXX." for example:
8540 this is the same syntax as used in the req config file.
8543 *) Allow certificate extensions to be added to certificate requests. These
8544 are specified in a 'req_extensions' option of the req section of the
8545 config file. They can be printed out with the -text option to req but
8546 are otherwise ignored at present.
8549 *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
8550 data read consists of only the final block it would not decrypted because
8551 EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
8552 A misplaced 'break' also meant the decrypted final block might not be
8553 copied until the next read.
8556 *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
8557 a few extra parameters to the DH structure: these will be useful if
8558 for example we want the value of 'q' or implement X9.42 DH.
8561 *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and
8562 provides hooks that allow the default DSA functions or functions on a
8563 "per key" basis to be replaced. This allows hardware acceleration and
8564 hardware key storage to be handled without major modification to the
8565 library. Also added low level modexp hooks and CRYPTO_EX structure and
8566 associated functions.
8569 *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
8570 as "read only": it can't be written to and the buffer it points to will
8571 not be freed. Reading from a read only BIO is much more efficient than
8572 a normal memory BIO. This was added because there are several times when
8573 an area of memory needs to be read from a BIO. The previous method was
8574 to create a memory BIO and write the data to it, this results in two
8575 copies of the data and an O(n^2) reading algorithm. There is a new
8576 function BIO_new_mem_buf() which creates a read only memory BIO from
8577 an area of memory. Also modified the PKCS#7 routines to use read only
8581 *) Bugfix: ssl23_get_client_hello did not work properly when called in
8582 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
8583 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
8584 but a retry condition occured while trying to read the rest.
8587 *) The PKCS7_ENC_CONTENT_new() function was setting the content type as
8588 NID_pkcs7_encrypted by default: this was wrong since this should almost
8589 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
8590 the encrypted data type: this is a more sensible place to put it and it
8591 allows the PKCS#12 code to be tidied up that duplicated this
8595 *) Changed obj_dat.pl script so it takes its input and output files on
8596 the command line. This should avoid shell escape redirection problems
8600 *) Initial support for certificate extension requests, these are included
8601 in things like Xenroll certificate requests. Included functions to allow
8602 extensions to be obtained and added.
8605 *) -crlf option to s_client and s_server for sending newlines as
8606 CRLF (as required by many protocols).
8609 Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
8611 *) Install libRSAglue.a when OpenSSL is built with RSAref.
8612 [Ralf S. Engelschall]
8614 *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency.
8615 [Andrija Antonijevic <TheAntony2@bigfoot.com>]
8617 *) Fix -startdate and -enddate (which was missing) arguments to 'ca'
8621 *) New function DSA_dup_DH, which duplicates DSA parameters/keys as
8622 DH parameters/keys (q is lost during that conversion, but the resulting
8623 DH parameters contain its length).
8625 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
8626 much faster than DH_generate_parameters (which creates parameters
8627 where p = 2*q + 1), and also the smaller q makes DH computations
8628 much more efficient (160-bit exponentiation instead of 1024-bit
8629 exponentiation); so this provides a convenient way to support DHE
8630 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
8631 utter importance to use
8632 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
8634 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
8635 when such DH parameters are used, because otherwise small subgroup
8636 attacks may become possible!
8639 *) Avoid memory leak in i2d_DHparams.
8642 *) Allow the -k option to be used more than once in the enc program:
8643 this allows the same encrypted message to be read by multiple recipients.
8646 *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
8647 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
8648 it will always use the numerical form of the OID, even if it has a short
8652 *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
8653 method only got called if p,q,dmp1,dmq1,iqmp components were present,
8654 otherwise bn_mod_exp was called. In the case of hardware keys for example
8655 no private key components need be present and it might store extra data
8656 in the RSA structure, which cannot be accessed from bn_mod_exp.
8657 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
8658 private key operations.
8661 *) Added support for SPARC Linux.
8664 *) pem_password_cb function type incompatibly changed from
8665 typedef int pem_password_cb(char *buf, int size, int rwflag);
8667 ....(char *buf, int size, int rwflag, void *userdata);
8668 so that applications can pass data to their callbacks:
8669 The PEM[_ASN1]_{read,write}... functions and macros now take an
8670 additional void * argument, which is just handed through whenever
8671 the password callback is called.
8672 [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller]
8674 New function SSL_CTX_set_default_passwd_cb_userdata.
8676 Compatibility note: As many C implementations push function arguments
8677 onto the stack in reverse order, the new library version is likely to
8678 interoperate with programs that have been compiled with the old
8679 pem_password_cb definition (PEM_whatever takes some data that
8680 happens to be on the stack as its last argument, and the callback
8681 just ignores this garbage); but there is no guarantee whatsoever that
8684 *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
8685 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
8686 problems not only on Windows, but also on some Unix platforms.
8687 To avoid problematic command lines, these definitions are now in an
8688 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
8689 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
8692 *) MIPS III/IV assembler module is reimplemented.
8695 *) More DES library cleanups: remove references to srand/rand and
8696 delete an unused file.
8699 *) Add support for the the free Netwide assembler (NASM) under Win32,
8700 since not many people have MASM (ml) and it can be hard to obtain.
8701 This is currently experimental but it seems to work OK and pass all
8702 the tests. Check out INSTALL.W32 for info.
8705 *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
8706 without temporary keys kept an extra copy of the server key,
8707 and connections with temporary keys did not free everything in case
8711 *) New function RSA_check_key and new openssl rsa option -check
8712 for verifying the consistency of RSA keys.
8713 [Ulf Moeller, Bodo Moeller]
8715 *) Various changes to make Win32 compile work:
8716 1. Casts to avoid "loss of data" warnings in p5_crpt2.c
8717 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
8718 comparison" warnings.
8719 3. Add sk_<TYPE>_sort to DEF file generator and do make update.
8722 *) Add a debugging option to PKCS#5 v2 key generation function: when
8723 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
8724 derived keys are printed to stderr.
8727 *) Copy the flags in ASN1_STRING_dup().
8728 [Roman E. Pavlov <pre@mo.msk.ru>]
8730 *) The x509 application mishandled signing requests containing DSA
8731 keys when the signing key was also DSA and the parameters didn't match.
8733 It was supposed to omit the parameters when they matched the signing key:
8734 the verifying software was then supposed to automatically use the CA's
8735 parameters if they were absent from the end user certificate.
8737 Omitting parameters is no longer recommended. The test was also
8738 the wrong way round! This was probably due to unusual behaviour in
8739 EVP_cmp_parameters() which returns 1 if the parameters match.
8740 This meant that parameters were omitted when they *didn't* match and
8741 the certificate was useless. Certificates signed with 'ca' didn't have
8743 [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>]
8745 *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
8746 The interface is as follows:
8747 Applications can use
8748 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
8749 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
8750 "off" is now the default.
8751 The library internally uses
8752 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
8753 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
8754 to disable memory-checking temporarily.
8756 Some inconsistent states that previously were possible (and were
8757 even the default) are now avoided.
8759 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
8760 with each memory chunk allocated; this is occasionally more helpful
8761 than just having a counter.
8763 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
8765 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
8769 *) Introduce "mode" for SSL structures (with defaults in SSL_CTX),
8770 which largely parallels "options", but is for changing API behaviour,
8771 whereas "options" are about protocol behaviour.
8772 Initial "mode" flags are:
8774 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when
8775 a single record has been written.
8776 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write
8777 retries use the same buffer location.
8778 (But all of the contents must be
8782 *) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options
8785 *) Fix problems with no-hmac etc.
8786 [Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>]
8788 *) New functions RSA_get_default_method(), RSA_set_method() and
8789 RSA_get_method(). These allows replacement of RSA_METHODs without having
8790 to mess around with the internals of an RSA structure.
8793 *) Fix memory leaks in DSA_do_sign and DSA_is_prime.
8794 Also really enable memory leak checks in openssl.c and in some
8796 [Chad C. Mulligan, Bodo Moeller]
8798 *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
8799 up the length of negative integers. This has now been simplified to just
8800 store the length when it is first determined and use it later, rather
8801 than trying to keep track of where data is copied and updating it to
8803 [Steve Henson, reported by Brien Wheeler
8804 <bwheeler@authentica-security.com>]
8806 *) Add a new function PKCS7_signatureVerify. This allows the verification
8807 of a PKCS#7 signature but with the signing certificate passed to the
8808 function itself. This contrasts with PKCS7_dataVerify which assumes the
8809 certificate is present in the PKCS#7 structure. This isn't always the
8810 case: certificates can be omitted from a PKCS#7 structure and be
8811 distributed by "out of band" means (such as a certificate database).
8814 *) Complete the PEM_* macros with DECLARE_PEM versions to replace the
8815 function prototypes in pem.h, also change util/mkdef.pl to add the
8816 necessary function names.
8819 *) mk1mf.pl (used by Windows builds) did not properly read the
8820 options set by Configure in the top level Makefile, and Configure
8821 was not even able to write more than one option correctly.
8822 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
8825 *) New functions CONF_load_bio() and CONF_load_fp() to allow a config
8826 file to be loaded from a BIO or FILE pointer. The BIO version will
8827 for example allow memory BIOs to contain config info.
8830 *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
8831 Whoever hopes to achieve shared-library compatibility across versions
8832 must use this, not the compile-time macro.
8833 (Exercise 0.9.4: Which is the minimum library version required by
8835 Note: All this applies only to multi-threaded programs, others don't
8839 *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests
8840 through a BIO pair triggered the default case, i.e.
8841 SSLerr(...,SSL_R_UNKNOWN_STATE).
8844 *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
8845 can use the SSL library even if none of the specific BIOs is
8849 *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
8850 for the encoded length.
8851 [Jeon KyoungHo <khjeon@sds.samsung.co.kr>]
8853 *) Add initial documentation of the X509V3 functions.
8856 *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and
8857 PEM_write_bio_PKCS8PrivateKey() that are equivalent to
8858 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
8859 secure PKCS#8 private key format with a high iteration count.
8862 *) Fix determination of Perl interpreter: A perl or perl5
8863 _directory_ in $PATH was also accepted as the interpreter.
8864 [Ralf S. Engelschall]
8866 *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking
8867 wrong with it but it was very old and did things like calling
8868 PEM_ASN1_read() directly and used MD5 for the hash not to mention some
8872 *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed
8873 to use the new extension code.
8876 *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
8877 with macros. This should make it easier to change their form, add extra
8878 arguments etc. Fix a few PEM prototypes which didn't have cipher as a
8882 *) Add to configuration table a new entry that can specify an alternative
8883 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
8884 according to Mark Crispin <MRC@Panda.COM>.
8888 *) DES CBC did not update the IV. Weird.
8891 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
8892 Changing the behaviour of the former might break existing programs --
8893 where IV updating is needed, des_ncbc_encrypt can be used.
8896 *) When bntest is run from "make test" it drives bc to check its
8897 calculations, as well as internally checking them. If an internal check
8898 fails, it needs to cause bc to give a non-zero result or make test carries
8899 on without noticing the failure. Fixed.
8902 *) DES library cleanups.
8905 *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
8906 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
8907 ciphers. NOTE: although the key derivation function has been verified
8908 against some published test vectors it has not been extensively tested
8909 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
8913 *) Instead of "mkdir -p", which is not fully portable, use new
8914 Perl script "util/mkdir-p.pl".
8917 *) Rewrite the way password based encryption (PBE) is handled. It used to
8918 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
8919 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
8920 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
8921 the 'parameter' field of the AlgorithmIdentifier is passed to the
8922 underlying key generation function so it must do its own ASN1 parsing.
8923 This has also changed the EVP_PBE_CipherInit() function which now has a
8924 'parameter' argument instead of literal salt and iteration count values
8925 and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
8928 *) Support for PKCS#5 v1.5 compatible password based encryption algorithms
8929 and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
8930 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
8931 KEY" because this clashed with PKCS#8 unencrypted string. Since this
8932 value was just used as a "magic string" and not used directly its
8933 value doesn't matter.
8936 *) Introduce some semblance of const correctness to BN. Shame C doesn't
8940 *) "linux-sparc64" configuration (ultrapenguin).
8941 [Ray Miller <ray.miller@oucs.ox.ac.uk>]
8942 "linux-sparc" configuration.
8943 [Christian Forster <fo@hawo.stw.uni-erlangen.de>]
8945 *) config now generates no-xxx options for missing ciphers.
8948 *) Support the EBCDIC character set (work in progress).
8949 File ebcdic.c not yet included because it has a different license.
8950 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
8952 *) Support BS2000/OSD-POSIX.
8953 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
8955 *) Make callbacks for key generation use void * instead of char *.
8958 *) Make S/MIME samples compile (not yet tested).
8961 *) Additional typesafe stacks.
8964 *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
8968 Changes between 0.9.3 and 0.9.3a [29 May 1999]
8970 *) New configuration variant "sco5-gcc".
8972 *) Updated some demos.
8973 [Sean O Riordain, Wade Scholine]
8975 *) Add missing BIO_free at exit of pkcs12 application.
8978 *) Fix memory leak in conf.c.
8981 *) Updates for Win32 to assembler version of MD5.
8984 *) Set #! path to perl in apps/der_chop to where we found it
8985 instead of using a fixed path.
8988 *) SHA library changes for irix64-mips4-cc.
8991 *) Improvements for VMS support.
8995 Changes between 0.9.2b and 0.9.3 [24 May 1999]
8997 *) Bignum library bug fix. IRIX 6 passes "make test" now!
8998 This also avoids the problems with SC4.2 and unpatched SC5.
8999 [Andy Polyakov <appro@fy.chalmers.se>]
9001 *) New functions sk_num, sk_value and sk_set to replace the previous macros.
9002 These are required because of the typesafe stack would otherwise break
9003 existing code. If old code used a structure member which used to be STACK
9004 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
9005 sk_num or sk_value it would produce an error because the num, data members
9006 are not present in STACK_OF. Now it just produces a warning. sk_set
9007 replaces the old method of assigning a value to sk_value
9008 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
9009 that does this will no longer work (and should use sk_set instead) but
9010 this could be regarded as a "questionable" behaviour anyway.
9013 *) Fix most of the other PKCS#7 bugs. The "experimental" code can now
9014 correctly handle encrypted S/MIME data.
9017 *) Change type of various DES function arguments from des_cblock
9018 (which means, in function argument declarations, pointer to char)
9019 to des_cblock * (meaning pointer to array with 8 char elements),
9020 which allows the compiler to do more typechecking; it was like
9021 that back in SSLeay, but with lots of ugly casts.
9023 Introduce new type const_des_cblock.
9026 *) Reorganise the PKCS#7 library and get rid of some of the more obvious
9027 problems: find RecipientInfo structure that matches recipient certificate
9028 and initialise the ASN1 structures properly based on passed cipher.
9031 *) Belatedly make the BN tests actually check the results.
9034 *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
9035 to and from BNs: it was completely broken. New compilation option
9036 NEG_PUBKEY_BUG to allow for some broken certificates that encode public
9037 key elements as negative integers.
9040 *) Reorganize and speed up MD5.
9041 [Andy Polyakov <appro@fy.chalmers.se>]
9044 [Richard Levitte <richard@levitte.org>]
9046 *) New option -out to asn1parse to allow the parsed structure to be
9047 output to a file. This is most useful when combined with the -strparse
9048 option to examine the output of things like OCTET STRINGS.
9051 *) Make SSL library a little more fool-proof by not requiring any longer
9052 that SSL_set_{accept,connect}_state be called before
9053 SSL_{accept,connect} may be used (SSL_set_..._state is omitted
9054 in many applications because usually everything *appeared* to work as
9055 intended anyway -- now it really works as intended).
9058 *) Move openssl.cnf out of lib/.
9061 *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall
9062 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
9063 -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+
9064 [Ralf S. Engelschall]
9066 *) Various fixes to the EVP and PKCS#7 code. It may now be able to
9067 handle PKCS#7 enveloped data properly.
9068 [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve]
9070 *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
9071 copying pointers. The cert_st handling is changed by this in
9072 various ways (and thus what used to be known as ctx->default_cert
9073 is now called ctx->cert, since we don't resort to s->ctx->[default_]cert
9074 any longer when s->cert does not give us what we need).
9075 ssl_cert_instantiate becomes obsolete by this change.
9076 As soon as we've got the new code right (possibly it already is?),
9077 we have solved a couple of bugs of the earlier code where s->cert
9078 was used as if it could not have been shared with other SSL structures.
9080 Note that using the SSL API in certain dirty ways now will result
9081 in different behaviour than observed with earlier library versions:
9082 Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx)
9083 does not influence s as it used to.
9085 In order to clean up things more thoroughly, inside SSL_SESSION
9086 we don't use CERT any longer, but a new structure SESS_CERT
9087 that holds per-session data (if available); currently, this is
9088 the peer's certificate chain and, for clients, the server's certificate
9089 and temporary key. CERT holds only those values that can have
9090 meaningful defaults in an SSL_CTX.
9093 *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
9094 from the internal representation. Various PKCS#7 fixes: remove some
9095 evil casts and set the enc_dig_alg field properly based on the signing
9099 *) Allow PKCS#12 password to be set from the command line or the
9100 environment. Let 'ca' get its config file name from the environment
9101 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
9105 *) Allow certificate policies extension to use an IA5STRING for the
9106 organization field. This is contrary to the PKIX definition but
9107 VeriSign uses it and IE5 only recognises this form. Document 'x509'
9111 *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
9112 without disallowing inline assembler and the like for non-pedantic builds.
9115 *) Support Borland C++ builder.
9116 [Janez Jere <jj@void.si>, modified by Ulf Möller]
9121 *) SHA-1 cleanups and performance enhancements.
9122 [Andy Polyakov <appro@fy.chalmers.se>]
9124 *) Sparc v8plus assembler for the bignum library.
9125 [Andy Polyakov <appro@fy.chalmers.se>]
9127 *) Accept any -xxx and +xxx compiler options in Configure.
9130 *) Update HPUX configuration.
9133 *) Add missing sk_<type>_unshift() function to safestack.h
9134 [Ralf S. Engelschall]
9136 *) New function SSL_CTX_use_certificate_chain_file that sets the
9137 "extra_cert"s in addition to the certificate. (This makes sense
9138 only for "PEM" format files, as chains as a whole are not
9142 *) Support verify_depth from the SSL API.
9143 x509_vfy.c had what can be considered an off-by-one-error:
9144 Its depth (which was not part of the external interface)
9145 was actually counting the number of certificates in a chain;
9146 now it really counts the depth.
9149 *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
9150 instead of X509err, which often resulted in confusing error
9151 messages since the error codes are not globally unique
9152 (e.g. an alleged error in ssl3_accept when a certificate
9153 didn't match the private key).
9155 *) New function SSL_CTX_set_session_id_context that allows to set a default
9156 value (so that you don't need SSL_set_session_id_context for each
9157 connection using the SSL_CTX).
9160 *) OAEP decoding bug fix.
9163 *) Support INSTALL_PREFIX for package builders, as proposed by
9167 *) New Configure options "threads" and "no-threads". For systems
9168 where the proper compiler options are known (currently Solaris
9169 and Linux), "threads" is the default.
9172 *) New script util/mklink.pl as a faster substitute for util/mklink.sh.
9175 *) Install various scripts to $(OPENSSLDIR)/misc, not to
9176 $(INSTALLTOP)/bin -- they shouldn't clutter directories
9177 such as /usr/local/bin.
9180 *) "make linux-shared" to build shared libraries.
9181 [Niels Poppe <niels@netbox.org>]
9183 *) New Configure option no-<cipher> (rsa, idea, rc5, ...).
9186 *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
9187 extension adding in x509 utility.
9190 *) Remove NOPROTO sections and error code comments.
9193 *) Partial rewrite of the DEF file generator to now parse the ANSI
9197 *) New Configure options --prefix=DIR and --openssldir=DIR.
9200 *) Complete rewrite of the error code script(s). It is all now handled
9201 by one script at the top level which handles error code gathering,
9202 header rewriting and C source file generation. It should be much better
9203 than the old method: it now uses a modified version of Ulf's parser to
9204 read the ANSI prototypes in all header files (thus the old K&R definitions
9205 aren't needed for error creation any more) and do a better job of
9206 translating function codes into names. The old 'ASN1 error code imbedded
9207 in a comment' is no longer necessary and it doesn't use .err files which
9208 have now been deleted. Also the error code call doesn't have to appear all
9209 on one line (which resulted in some large lines...).
9212 *) Change #include filenames from <foo.h> to <openssl/foo.h>.
9215 *) Change behaviour of ssl2_read when facing length-0 packets: Don't return
9216 0 (which usually indicates a closed connection), but continue reading.
9219 *) Fix some race conditions.
9222 *) Add support for CRL distribution points extension. Add Certificate
9223 Policies and CRL distribution points documentation.
9226 *) Move the autogenerated header file parts to crypto/opensslconf.h.
9229 *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
9230 8 of keying material. Merlin has also confirmed interop with this fix
9231 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
9232 [Merlin Hughes <merlin@baltimore.ie>]
9234 *) Fix lots of warnings.
9235 [Richard Levitte <levitte@stacken.kth.se>]
9237 *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
9238 the directory spec didn't end with a LIST_SEPARATOR_CHAR.
9239 [Richard Levitte <levitte@stacken.kth.se>]
9241 *) Fix problems with sizeof(long) == 8.
9242 [Andy Polyakov <appro@fy.chalmers.se>]
9244 *) Change functions to ANSI C.
9247 *) Fix typos in error codes.
9248 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller]
9250 *) Remove defunct assembler files from Configure.
9253 *) SPARC v8 assembler BIGNUM implementation.
9254 [Andy Polyakov <appro@fy.chalmers.se>]
9256 *) Support for Certificate Policies extension: both print and set.
9257 Various additions to support the r2i method this uses.
9260 *) A lot of constification, and fix a bug in X509_NAME_oneline() that could
9261 return a const string when you are expecting an allocated buffer.
9264 *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
9265 types DirectoryString and DisplayText.
9268 *) Add code to allow r2i extensions to access the configuration database,
9269 add an LHASH database driver and add several ctx helper functions.
9272 *) Fix an evil bug in bn_expand2() which caused various BN functions to
9273 fail when they extended the size of a BIGNUM.
9276 *) Various utility functions to handle SXNet extension. Modify mkdef.pl to
9277 support typesafe stack.
9280 *) Fix typo in SSL_[gs]et_options().
9281 [Nils Frostberg <nils@medcom.se>]
9283 *) Delete various functions and files that belonged to the (now obsolete)
9284 old X509V3 handling code.
9287 *) New Configure option "rsaref".
9290 *) Don't auto-generate pem.h.
9293 *) Introduce type-safe ASN.1 SETs.
9296 *) Convert various additional casted stacks to type-safe STACK_OF() variants.
9297 [Ben Laurie, Ralf S. Engelschall, Steve Henson]
9299 *) Introduce type-safe STACKs. This will almost certainly break lots of code
9300 that links with OpenSSL (well at least cause lots of warnings), but fear
9301 not: the conversion is trivial, and it eliminates loads of evil casts. A
9302 few STACKed things have been converted already. Feel free to convert more.
9303 In the fullness of time, I'll do away with the STACK type altogether.
9306 *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate
9307 specified in <certfile> by updating the entry in the index.txt file.
9308 This way one no longer has to edit the index.txt file manually for
9309 revoking a certificate. The -revoke option does the gory details now.
9310 [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall]
9312 *) Fix `openssl crl -noout -text' combination where `-noout' killed the
9313 `-text' option at all and this way the `-noout -text' combination was
9314 inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'.
9315 [Ralf S. Engelschall]
9317 *) Make sure a corresponding plain text error message exists for the
9318 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
9319 verify callback function determined that a certificate was revoked.
9320 [Ralf S. Engelschall]
9322 *) Bugfix: In test/testenc, don't test "openssl <cipher>" for
9323 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test
9324 all available cipers including rc5, which was forgotten until now.
9325 In order to let the testing shell script know which algorithms
9326 are available, a new (up to now undocumented) command
9327 "openssl list-cipher-commands" is used.
9330 *) Bugfix: s_client occasionally would sleep in select() when
9331 it should have checked SSL_pending() first.
9334 *) New functions DSA_do_sign and DSA_do_verify to provide access to
9335 the raw DSA values prior to ASN.1 encoding.
9338 *) Tweaks to Configure
9339 [Niels Poppe <niels@netbox.org>]
9341 *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
9345 *) New variables $(RANLIB) and $(PERL) in the Makefiles.
9348 *) New config option to avoid instructions that are illegal on the 80386.
9349 The default code is faster, but requires at least a 486.
9352 *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
9353 SSL2_SERVER_VERSION (not used at all) macros, which are now the
9354 same as SSL2_VERSION anyway.
9357 *) New "-showcerts" option for s_client.
9360 *) Still more PKCS#12 integration. Add pkcs12 application to openssl
9361 application. Various cleanups and fixes.
9364 *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
9365 modify error routines to work internally. Add error codes and PBE init
9366 to library startup routines.
9369 *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and
9370 packing functions to asn1 and evp. Changed function names and error
9371 codes along the way.
9374 *) PKCS12 integration: and so it begins... First of several patches to
9375 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
9376 objects to objects.h
9379 *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1
9380 and display support for Thawte strong extranet extension.
9383 *) Add LinuxPPC support.
9384 [Jeff Dubrule <igor@pobox.org>]
9386 *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
9387 bn_div_words in alpha.s.
9388 [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie]
9390 *) Make sure the RSA OAEP test is skipped under -DRSAref because
9391 OAEP isn't supported when OpenSSL is built with RSAref.
9392 [Ulf Moeller <ulf@fitug.de>]
9394 *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
9395 so they no longer are missing under -DNOPROTO.
9396 [Soren S. Jorvang <soren@t.dk>]
9399 Changes between 0.9.1c and 0.9.2b [22 Mar 1999]
9401 *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
9402 doesn't work when the session is reused. Coming soon!
9405 *) Fix a security hole, that allows sessions to be reused in the wrong
9406 context thus bypassing client cert protection! All software that uses
9407 client certs and session caches in multiple contexts NEEDS PATCHING to
9408 allow session reuse! A fuller solution is in the works.
9409 [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)]
9411 *) Some more source tree cleanups (removed obsolete files
9412 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
9413 permission on "config" script to be executable) and a fix for the INSTALL
9415 [Ulf Moeller <ulf@fitug.de>]
9417 *) Remove some legacy and erroneous uses of malloc, free instead of
9419 [Lennart Bang <lob@netstream.se>, with minor changes by Steve]
9421 *) Make rsa_oaep_test return non-zero on error.
9422 [Ulf Moeller <ulf@fitug.de>]
9424 *) Add support for native Solaris shared libraries. Configure
9425 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
9426 if someone would make that last step automatic.
9427 [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>]
9429 *) ctx_size was not built with the right compiler during "make links". Fixed.
9432 *) Change the meaning of 'ALL' in the cipher list. It now means "everything
9433 except NULL ciphers". This means the default cipher list will no longer
9434 enable NULL ciphers. They need to be specifically enabled e.g. with
9435 the string "DEFAULT:eNULL".
9438 *) Fix to RSA private encryption routines: if p < q then it would
9439 occasionally produce an invalid result. This will only happen with
9440 externally generated keys because OpenSSL (and SSLeay) ensure p > q.
9443 *) Be less restrictive and allow also `perl util/perlpath.pl
9444 /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin',
9445 because this way one can also use an interpreter named `perl5' (which is
9446 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
9447 installed as `perl').
9448 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
9450 *) Let util/clean-depend.pl work also with older Perl 5.00x versions.
9451 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
9453 *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
9454 advapi32.lib to Win32 build and change the pem test comparision
9455 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
9456 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
9457 and crypto/des/ede_cbcm_enc.c.
9460 *) DES quad checksum was broken on big-endian architectures. Fixed.
9463 *) Comment out two functions in bio.h that aren't implemented. Fix up the
9464 Win32 test batch file so it (might) work again. The Win32 test batch file
9465 is horrible: I feel ill....
9468 *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
9469 in e_os.h. Audit of header files to check ANSI and non ANSI
9470 sections: 10 functions were absent from non ANSI section and not exported
9471 from Windows DLLs. Fixed up libeay.num for new functions.
9474 *) Make `openssl version' output lines consistent.
9475 [Ralf S. Engelschall]
9477 *) Fix Win32 symbol export lists for BIO functions: Added
9478 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
9479 to ms/libeay{16,32}.def.
9480 [Ralf S. Engelschall]
9482 *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
9483 fine under Unix and passes some trivial tests I've now added. But the
9484 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
9485 added to make sure no one expects that this stuff really works in the
9486 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources
9487 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
9489 [Ralf S. Engelschall]
9491 *) Fix the generation of two part addresses in perl.
9492 [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie]
9494 *) Add config entry for Linux on MIPS.
9495 [John Tobey <jtobey@channel1.com>]
9497 *) Make links whenever Configure is run, unless we are on Windoze.
9500 *) Permit extensions to be added to CRLs using crl_section in openssl.cnf.
9501 Currently only issuerAltName and AuthorityKeyIdentifier make any sense
9505 *) Add a useful kludge to allow package maintainers to specify compiler and
9506 other platforms details on the command line without having to patch the
9507 Configure script everytime: One now can use ``perl Configure
9508 <id>:<details>'', i.e. platform ids are allowed to have details appended
9509 to them (seperated by colons). This is treated as there would be a static
9510 pre-configured entry in Configure's %table under key <id> with value
9511 <details> and ``perl Configure <id>'' is called. So, when you want to
9512 perform a quick test-compile under FreeBSD 3.1 with pgcc and without
9513 assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"''
9514 now, which overrides the FreeBSD-elf entry on-the-fly.
9515 [Ralf S. Engelschall]
9517 *) Disable new TLS1 ciphersuites by default: they aren't official yet.
9520 *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
9521 on the `perl Configure ...' command line. This way one can compile
9522 OpenSSL libraries with Position Independent Code (PIC) which is needed
9523 for linking it into DSOs.
9524 [Ralf S. Engelschall]
9526 *) Remarkably, export ciphers were totally broken and no-one had noticed!
9530 *) Cleaned up the LICENSE document: The official contact for any license
9531 questions now is the OpenSSL core team under openssl-core@openssl.org.
9532 And add a paragraph about the dual-license situation to make sure people
9533 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
9534 to the OpenSSL toolkit.
9535 [Ralf S. Engelschall]
9537 *) General source tree makefile cleanups: Made `making xxx in yyy...'
9538 display consistent in the source tree and replaced `/bin/rm' by `rm'.
9539 Additonally cleaned up the `make links' target: Remove unnecessary
9540 semicolons, subsequent redundant removes, inline point.sh into mklink.sh
9541 to speed processing and no longer clutter the display with confusing
9542 stuff. Instead only the actually done links are displayed.
9543 [Ralf S. Engelschall]
9545 *) Permit null encryption ciphersuites, used for authentication only. It used
9546 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
9547 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
9551 *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
9552 signed attributes when verifying signatures (this would break them),
9553 the detached data encoding was wrong and public keys obtained using
9554 X509_get_pubkey() weren't freed.
9557 *) Add text documentation for the BUFFER functions. Also added a work around
9558 to a Win95 console bug. This was triggered by the password read stuff: the
9559 last character typed gets carried over to the next fread(). If you were
9560 generating a new cert request using 'req' for example then the last
9561 character of the passphrase would be CR which would then enter the first
9565 *) Added the new `Includes OpenSSL Cryptography Software' button as
9566 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
9567 button and can be used by applications based on OpenSSL to show the
9568 relationship to the OpenSSL project.
9569 [Ralf S. Engelschall]
9571 *) Remove confusing variables in function signatures in files
9572 ssl/ssl_lib.c and ssl/ssl.h.
9573 [Lennart Bong <lob@kulthea.stacken.kth.se>]
9575 *) Don't install bss_file.c under PREFIX/include/
9576 [Lennart Bong <lob@kulthea.stacken.kth.se>]
9578 *) Get the Win32 compile working again. Modify mkdef.pl so it can handle
9579 functions that return function pointers and has support for NT specific
9580 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
9581 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
9582 unsigned to signed types: this was killing the Win32 compile.
9585 *) Add new certificate file to stack functions,
9586 SSL_add_dir_cert_subjects_to_stack() and
9587 SSL_add_file_cert_subjects_to_stack(). These largely supplant
9588 SSL_load_client_CA_file(), and can be used to add multiple certs easily
9589 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
9590 This means that Apache-SSL and similar packages don't have to mess around
9591 to add as many CAs as they want to the preferred list.
9594 *) Experiment with doxygen documentation. Currently only partially applied to
9596 See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with
9597 openssl.doxy as the configuration file.
9600 *) Get rid of remaining C++-style comments which strict C compilers hate.
9601 [Ralf S. Engelschall, pointed out by Carlos Amengual]
9603 *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
9604 compiled in by default: it has problems with large keys.
9607 *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
9608 DH private keys and/or callback functions which directly correspond to
9609 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
9610 is needed for applications which have to configure certificates on a
9611 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
9613 For the RSA certificate situation is makes no difference, but
9614 for the DSA certificate situation this fixes the "no shared cipher"
9615 problem where the OpenSSL cipher selection procedure failed because the
9616 temporary keys were not overtaken from the context and the API provided
9617 no way to reconfigure them.
9618 The new functions now let applications reconfigure the stuff and they
9619 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
9620 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new
9621 non-public-API function ssl_cert_instantiate() is used as a helper
9622 function and also to reduce code redundancy inside ssl_rsa.c.
9623 [Ralf S. Engelschall]
9625 *) Move s_server -dcert and -dkey options out of the undocumented feature
9626 area because they are useful for the DSA situation and should be
9627 recognized by the users.
9628 [Ralf S. Engelschall]
9630 *) Fix the cipher decision scheme for export ciphers: the export bits are
9631 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
9632 SSL_EXP_MASK. So, the original variable has to be used instead of the
9633 already masked variable.
9634 [Richard Levitte <levitte@stacken.kth.se>]
9636 *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c
9637 [Richard Levitte <levitte@stacken.kth.se>]
9639 *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
9640 from `int' to `unsigned int' because it's a length and initialized by
9641 EVP_DigestFinal() which expects an `unsigned int *'.
9642 [Richard Levitte <levitte@stacken.kth.se>]
9644 *) Don't hard-code path to Perl interpreter on shebang line of Configure
9645 script. Instead use the usual Shell->Perl transition trick.
9646 [Ralf S. Engelschall]
9648 *) Make `openssl x509 -noout -modulus' functional also for DSA certificates
9649 (in addition to RSA certificates) to match the behaviour of `openssl dsa
9650 -noout -modulus' as it's already the case for `openssl rsa -noout
9651 -modulus'. For RSA the -modulus is the real "modulus" while for DSA
9652 currently the public key is printed (a decision which was already done by
9653 `openssl dsa -modulus' in the past) which serves a similar purpose.
9654 Additionally the NO_RSA no longer completely removes the whole -modulus
9655 option; it now only avoids using the RSA stuff. Same applies to NO_DSA
9657 [Ralf S. Engelschall]
9659 *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
9660 BIO. See the source (crypto/evp/bio_ok.c) for more info.
9661 [Arne Ansper <arne@ats.cyber.ee>]
9663 *) Dump the old yucky req code that tried (and failed) to allow raw OIDs
9664 to be added. Now both 'req' and 'ca' can use new objects defined in the
9668 *) Add cool BIO that does syslog (or event log on NT).
9669 [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie]
9671 *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
9672 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
9673 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
9674 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
9677 *) Add preliminary config info for new extension code.
9680 *) Make RSA_NO_PADDING really use no padding.
9681 [Ulf Moeller <ulf@fitug.de>]
9683 *) Generate errors when private/public key check is done.
9686 *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
9687 for some CRL extensions and new objects added.
9690 *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private
9691 key usage extension and fuller support for authority key id.
9694 *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
9695 padding method for RSA, which is recommended for new applications in PKCS
9696 #1 v2.0 (RFC 2437, October 1998).
9697 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
9698 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
9699 against Bleichbacher's attack on RSA.
9700 [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
9703 *) Updates to the new SSL compression code
9704 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
9706 *) Fix so that the version number in the master secret, when passed
9707 via RSA, checks that if TLS was proposed, but we roll back to SSLv3
9708 (because the server will not accept higher), that the version number
9709 is 0x03,0x01, not 0x03,0x00
9710 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
9712 *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
9713 leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
9714 in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
9717 *) Support for RAW extensions where an arbitrary extension can be
9718 created by including its DER encoding. See apps/openssl.cnf for
9722 *) Make sure latest Perl versions don't interpret some generated C array
9723 code as Perl array code in the crypto/err/err_genc.pl script.
9724 [Lars Weber <3weber@informatik.uni-hamburg.de>]
9726 *) Modify ms/do_ms.bat to not generate assembly language makefiles since
9727 not many people have the assembler. Various Win32 compilation fixes and
9728 update to the INSTALL.W32 file with (hopefully) more accurate Win32
9732 *) Modify configure script 'Configure' to automatically create crypto/date.h
9733 file under Win32 and also build pem.h from pem.org. New script
9734 util/mkfiles.pl to create the MINFO file on environments that can't do a
9735 'make files': perl util/mkfiles.pl >MINFO should work.
9738 *) Major rework of DES function declarations, in the pursuit of correctness
9739 and purity. As a result, many evil casts evaporated, and some weirdness,
9740 too. You may find this causes warnings in your code. Zapping your evil
9741 casts will probably fix them. Mostly.
9744 *) Fix for a typo in asn1.h. Bug fix to object creation script
9745 obj_dat.pl. It considered a zero in an object definition to mean
9746 "end of object": none of the objects in objects.h have any zeros
9747 so it wasn't spotted.
9748 [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>]
9750 *) Add support for Triple DES Cipher Block Chaining with Output Feedback
9751 Masking (CBCM). In the absence of test vectors, the best I have been able
9752 to do is check that the decrypt undoes the encrypt, so far. Send me test
9753 vectors if you have them.
9756 *) Correct calculation of key length for export ciphers (too much space was
9757 allocated for null ciphers). This has not been tested!
9760 *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage
9761 message is now correct (it understands "crypto" and "ssl" on its
9762 command line). There is also now an "update" option. This will update
9763 the util/ssleay.num and util/libeay.num files with any new functions.
9765 perl util/mkdef.pl crypto ssl update
9766 it will update them.
9769 *) Overhauled the Perl interface (perl/*):
9770 - ported BN stuff to OpenSSL's different BN library
9771 - made the perl/ source tree CVS-aware
9772 - renamed the package from SSLeay to OpenSSL (the files still contain
9773 their history because I've copied them in the repository)
9774 - removed obsolete files (the test scripts will be replaced
9775 by better Test::Harness variants in the future)
9776 [Ralf S. Engelschall]
9778 *) First cut for a very conservative source tree cleanup:
9779 1. merge various obsolete readme texts into doc/ssleay.txt
9780 where we collect the old documents and readme texts.
9781 2. remove the first part of files where I'm already sure that we no
9782 longer need them because of three reasons: either they are just temporary
9783 files which were left by Eric or they are preserved original files where
9784 I've verified that the diff is also available in the CVS via "cvs diff
9785 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
9786 the crypto/md/ stuff).
9787 [Ralf S. Engelschall]
9789 *) More extension code. Incomplete support for subject and issuer alt
9790 name, issuer and authority key id. Change the i2v function parameters
9791 and add an extra 'crl' parameter in the X509V3_CTX structure: guess
9792 what that's for :-) Fix to ASN1 macro which messed up
9793 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
9796 *) Preliminary support for ENUMERATED type. This is largely copied from the
9800 *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
9801 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
9803 *) Make sure `make rehash' target really finds the `openssl' program.
9804 [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
9806 *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
9807 like to hear about it if this slows down other processors.
9810 *) Add CygWin32 platform information to Configure script.
9811 [Alan Batie <batie@aahz.jf.intel.com>]
9813 *) Fixed ms/32all.bat script: `no_asm' -> `no-asm'
9814 [Rainer W. Gerling <gerling@mpg-gv.mpg.de>]
9816 *) New program nseq to manipulate netscape certificate sequences
9819 *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
9823 *) Fixes to BN code. Previously the default was to define BN_RECURSION
9824 but the BN code had some problems that would cause failures when
9825 doing certificate verification and some other functions.
9826 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
9828 *) Add ASN1 and PEM code to support netscape certificate sequences.
9831 *) Add ASN1 and PEM code to support netscape certificate sequences.
9834 *) Add several PKIX and private extended key usage OIDs.
9837 *) Modify the 'ca' program to handle the new extension code. Modify
9838 openssl.cnf for new extension format, add comments.
9841 *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
9842 and add a sample to openssl.cnf so req -x509 now adds appropriate
9846 *) Continued X509 V3 changes. Add to other makefiles, integrate with the
9847 error code, add initial support to X509_print() and x509 application.
9850 *) Takes a deep breath and start addding X509 V3 extension support code. Add
9851 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
9852 stuff is currently isolated and isn't even compiled yet.
9855 *) Continuing patches for GeneralizedTime. Fix up certificate and CRL
9856 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
9857 Removed the versions check from X509 routines when loading extensions:
9858 this allows certain broken certificates that don't set the version
9859 properly to be processed.
9862 *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
9863 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
9864 can still be regenerated with "make depend".
9867 *) Spelling mistake in C version of CAST-128.
9868 [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>]
9870 *) Changes to the error generation code. The perl script err-code.pl
9871 now reads in the old error codes and retains the old numbers, only
9872 adding new ones if necessary. It also only changes the .err files if new
9873 codes are added. The makefiles have been modified to only insert errors
9874 when needed (to avoid needlessly modifying header files). This is done
9875 by only inserting errors if the .err file is newer than the auto generated
9876 C file. To rebuild all the error codes from scratch (the old behaviour)
9877 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
9878 or delete all the .err files.
9881 *) CAST-128 was incorrectly implemented for short keys. The C version has
9882 been fixed, but is untested. The assembler versions are also fixed, but
9883 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
9884 to regenerate it if needed.
9885 [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
9886 Hagino <itojun@kame.net>]
9888 *) File was opened incorrectly in randfile.c.
9889 [Ulf Möller <ulf@fitug.de>]
9891 *) Beginning of support for GeneralizedTime. d2i, i2d, check and print
9892 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
9893 GeneralizedTime. ASN1_TIME is the proper type used in certificates et
9894 al: it's just almost always a UTCTime. Note this patch adds new error
9895 codes so do a "make errors" if there are problems.
9898 *) Correct Linux 1 recognition in config.
9899 [Ulf Möller <ulf@fitug.de>]
9901 *) Remove pointless MD5 hash when using DSA keys in ca.
9902 [Anonymous <nobody@replay.com>]
9904 *) Generate an error if given an empty string as a cert directory. Also
9905 generate an error if handed NULL (previously returned 0 to indicate an
9906 error, but didn't set one).
9907 [Ben Laurie, reported by Anonymous <nobody@replay.com>]
9909 *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
9912 *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
9913 parameters. This was causing a warning which killed off the Win32 compile.
9916 *) Remove C++ style comments from crypto/bn/bn_local.h.
9917 [Neil Costigan <neil.costigan@celocom.com>]
9919 *) The function OBJ_txt2nid was broken. It was supposed to return a nid
9920 based on a text string, looking up short and long names and finally
9921 "dot" format. The "dot" format stuff didn't work. Added new function
9922 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
9923 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
9924 OID is not part of the table.
9927 *) Add prototypes to X509 lookup/verify methods, fixing a bug in
9928 X509_LOOKUP_by_alias().
9931 *) Sort openssl functions by name.
9934 *) Get the gendsa program working (hopefully) and add it to app list. Remove
9935 encryption from sample DSA keys (in case anyone is interested the password
9939 *) Make _all_ *_free functions accept a NULL pointer.
9940 [Frans Heymans <fheymans@isaserver.be>]
9942 *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use
9944 [Anonymous <nobody@replay.com>]
9946 *) s_server should send the CAfile as acceptable CAs, not its own cert.
9947 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
9949 *) Don't blow it for numeric -newkey arguments to apps/req.
9950 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
9952 *) Temp key "for export" tests were wrong in s3_srvr.c.
9953 [Anonymous <nobody@replay.com>]
9955 *) Add prototype for temp key callback functions
9956 SSL_CTX_set_tmp_{rsa,dh}_callback().
9959 *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
9960 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
9963 *) X509_name_add_entry() freed the wrong thing after an error.
9964 [Arne Ansper <arne@ats.cyber.ee>]
9966 *) rsa_eay.c would attempt to free a NULL context.
9967 [Arne Ansper <arne@ats.cyber.ee>]
9969 *) BIO_s_socket() had a broken should_retry() on Windoze.
9970 [Arne Ansper <arne@ats.cyber.ee>]
9972 *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
9973 [Arne Ansper <arne@ats.cyber.ee>]
9975 *) Make sure the already existing X509_STORE->depth variable is initialized
9976 in X509_STORE_new(), but document the fact that this variable is still
9977 unused in the certificate verification process.
9978 [Ralf S. Engelschall]
9980 *) Fix the various library and apps files to free up pkeys obtained from
9981 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
9984 *) Fix reference counting in X509_PUBKEY_get(). This makes
9985 demos/maurice/example2.c work, amongst others, probably.
9986 [Steve Henson and Ben Laurie]
9988 *) First cut of a cleanup for apps/. First the `ssleay' program is now named
9989 `openssl' and second, the shortcut symlinks for the `openssl <command>'
9990 are no longer created. This way we have a single and consistent command
9991 line interface `openssl <command>', similar to `cvs <command>'.
9992 [Ralf S. Engelschall, Paul Sutton and Ben Laurie]
9994 *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
9995 BIT STRING wrapper always have zero unused bits.
9998 *) Add CA.pl, perl version of CA.sh, add extended key usage OID.
10001 *) Make the top-level INSTALL documentation easier to understand.
10004 *) Makefiles updated to exit if an error occurs in a sub-directory
10005 make (including if user presses ^C) [Paul Sutton]
10007 *) Make Montgomery context stuff explicit in RSA data structure.
10010 *) Fix build order of pem and err to allow for generated pem.h.
10013 *) Fix renumbering bug in X509_NAME_delete_entry().
10016 *) Enhanced the err-ins.pl script so it makes the error library number
10017 global and can add a library name. This is needed for external ASN1 and
10018 other error libraries.
10021 *) Fixed sk_insert which never worked properly.
10024 *) Fix ASN1 macros so they can handle indefinite length construted
10025 EXPLICIT tags. Some non standard certificates use these: they can now
10029 *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
10030 into a single doc/ssleay.txt bundle. This way the information is still
10031 preserved but no longer messes up this directory. Now it's new room for
10032 the new set of documenation files.
10033 [Ralf S. Engelschall]
10035 *) SETs were incorrectly DER encoded. This was a major pain, because they
10036 shared code with SEQUENCEs, which aren't coded the same. This means that
10037 almost everything to do with SETs or SEQUENCEs has either changed name or
10038 number of arguments.
10039 [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>]
10041 *) Fix test data to work with the above.
10044 *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
10045 was already fixed by Eric for 0.9.1 it seems.
10046 [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>]
10048 *) Autodetect FreeBSD3.
10051 *) Fix various bugs in Configure. This affects the following platforms:
10055 unixware-2.0-pentium
10059 *) Eliminate generated files from CVS. Reorder tests to regenerate files
10060 before they are needed.
10063 *) Generate Makefile.ssl from Makefile.org (to keep CVS happy).
10067 Changes between 0.9.1b and 0.9.1c [23-Dec-1998]
10069 *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
10070 changed SSLeay to OpenSSL in version strings.
10071 [Ralf S. Engelschall]
10073 *) Some fixups to the top-level documents.
10076 *) Fixed the nasty bug where rsaref.h was not found under compile-time
10077 because the symlink to include/ was missing.
10078 [Ralf S. Engelschall]
10080 *) Incorporated the popular no-RSA/DSA-only patches
10081 which allow to compile a RSA-free SSLeay.
10082 [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall]
10084 *) Fixed nasty rehash problem under `make -f Makefile.ssl links'
10085 when "ssleay" is still not found.
10086 [Ralf S. Engelschall]
10088 *) Added more platforms to Configure: Cray T3E, HPUX 11,
10089 [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>]
10091 *) Updated the README file.
10092 [Ralf S. Engelschall]
10094 *) Added various .cvsignore files in the CVS repository subdirs
10095 to make a "cvs update" really silent.
10096 [Ralf S. Engelschall]
10098 *) Recompiled the error-definition header files and added
10099 missing symbols to the Win32 linker tables.
10100 [Ralf S. Engelschall]
10102 *) Cleaned up the top-level documents;
10103 o new files: CHANGES and LICENSE
10104 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
10105 o merged COPYRIGHT into LICENSE
10106 o removed obsolete TODO file
10107 o renamed MICROSOFT to INSTALL.W32
10108 [Ralf S. Engelschall]
10110 *) Removed dummy files from the 0.9.1b source tree:
10111 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
10112 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
10113 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
10114 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
10115 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
10116 [Ralf S. Engelschall]
10118 *) Added various platform portability fixes.
10121 *) The Genesis of the OpenSSL rpject:
10122 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
10123 Young and Tim J. Hudson created while they were working for C2Net until
10125 [The OpenSSL Project]
10128 Changes between 0.9.0b and 0.9.1b [not released]
10130 *) Updated a few CA certificates under certs/
10133 *) Changed some BIGNUM api stuff.
10136 *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
10137 DGUX x86, Linux Alpha, etc.
10140 *) New COMP library [crypto/comp/] for SSL Record Layer Compression:
10141 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
10145 *) Add -strparse option to asn1pars program which parses nested
10147 [Dr Stephen Henson <shenson@bigfoot.com>]
10149 *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
10152 *) DSA fix for "ca" program.
10155 *) Added "-genkey" option to "dsaparam" program.
10158 *) Added RIPE MD160 (rmd160) message digest.
10161 *) Added -a (all) option to "ssleay version" command.
10164 *) Added PLATFORM define which is the id given to Configure.
10167 *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
10170 *) Extended the ASN.1 parser routines.
10173 *) Extended BIO routines to support REUSEADDR, seek, tell, etc.
10176 *) Added a BN_CTX to the BN library.
10179 *) Fixed the weak key values in DES library
10182 *) Changed API in EVP library for cipher aliases.
10185 *) Added support for RC2/64bit cipher.
10188 *) Converted the lhash library to the crypto/mem.c functions.
10191 *) Added more recognized ASN.1 object ids.
10194 *) Added more RSA padding checks for SSL/TLS.
10197 *) Added BIO proxy/filter functionality.
10200 *) Added extra_certs to SSL_CTX which can be used
10201 send extra CA certificates to the client in the CA cert chain sending
10202 process. It can be configured with SSL_CTX_add_extra_chain_cert().
10205 *) Now Fortezza is denied in the authentication phase because
10206 this is key exchange mechanism is not supported by SSLeay at all.
10209 *) Additional PKCS1 checks.
10212 *) Support the string "TLSv1" for all TLS v1 ciphers.
10215 *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
10216 ex_data index of the SSL context in the X509_STORE_CTX ex_data.
10219 *) Fixed a few memory leaks.
10222 *) Fixed various code and comment typos.
10225 *) A minor bug in ssl/s3_clnt.c where there would always be 4 0
10226 bytes sent in the client random.
10227 [Edward Bishop <ebishop@spyglass.com>]
projects / openssl.git / blob