5 Changes between 1.0.2 and 1.1.0 [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 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
17 this fixes a limiation in previous versions of OpenSSL.
20 *) Experimental encrypt-then-mac support.
22 Experimental support for encrypt then mac from
23 draft-gutmann-tls-encrypt-then-mac-02.txt
25 To enable it set the appropriate extension number (0x42 for the test
26 server) using e.g. -DTLSEXT_TYPE_encrypt_then_mac=0x42
28 For non-compliant peers (i.e. just about everything) this should have no
31 WARNING: EXPERIMENTAL, SUBJECT TO CHANGE.
35 *) Add callbacks supporting generation and retrieval of supplemental
37 [Scott Deboy <sdeboy@apache.org>, Trevor Perrin and Ben Laurie]
39 *) Add EVP support for key wrapping algorithms, to avoid problems with
40 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
41 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
42 algorithms and include tests cases.
45 *) Extend CMS code to support RSA-PSS signatures and RSA-OAEP for
49 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
50 MGF1 digest and OAEP label.
53 *) Support for DTLS 1.2. This adds two sets of DTLS methods: DTLS_*_method()
54 supports both DTLS 1.2 and 1.0 and should use whatever version the peer
55 supports and DTLSv1_2_*_method() which supports DTLS 1.2 only.
58 *) Make openssl verify return errors.
59 [Chris Palmer <palmer@google.com> and Ben Laurie]
61 *) New function ASN1_TIME_diff to calculate the difference between two
62 ASN1_TIME structures or one structure and the current time.
65 *) Update fips_test_suite to support multiple command line options. New
66 test to induce all self test errors in sequence and check expected
70 *) Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and
71 sign or verify all in one operation.
74 *) Add fips_algvs: a multicall fips utility incorporaing all the algorithm
75 test programs and fips_test_suite. Includes functionality to parse
76 the minimal script output of fipsalgest.pl directly.
79 *) Add authorisation parameter to FIPS_module_mode_set().
82 *) Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves.
85 *) Use separate DRBG fields for internal and external flags. New function
86 FIPS_drbg_health_check() to perform on demand health checking. Add
87 generation tests to fips_test_suite with reduced health check interval to
88 demonstrate periodic health checking. Add "nodh" option to
89 fips_test_suite to skip very slow DH test.
92 *) New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers
96 *) More extensive health check for DRBG checking many more failure modes.
97 New function FIPS_selftest_drbg_all() to handle every possible DRBG
98 combination: call this in fips_test_suite.
101 *) Add support for Dual EC DRBG from SP800-90. Update DRBG algorithm test
102 and POST to handle Dual EC cases.
105 *) Add support for canonical generation of DSA parameter 'g'. See
108 *) Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
109 POST to handle HMAC cases.
112 *) Add functions FIPS_module_version() and FIPS_module_version_text()
113 to return numerical and string versions of the FIPS module number.
116 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
117 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implemented
118 outside the validated module in the FIPS capable OpenSSL.
121 *) Minor change to DRBG entropy callback semantics. In some cases
122 there is no multiple of the block length between min_len and
123 max_len. Allow the callback to return more than max_len bytes
124 of entropy but discard any extra: it is the callback's responsibility
125 to ensure that the extra data discarded does not impact the
126 requested amount of entropy.
129 *) Add PRNG security strength checks to RSA, DSA and ECDSA using
130 information in FIPS186-3, SP800-57 and SP800-131A.
133 *) CCM support via EVP. Interface is very similar to GCM case except we
134 must supply all data in one chunk (i.e. no update, final) and the
135 message length must be supplied if AAD is used. Add algorithm test
139 *) Initial version of POST overhaul. Add POST callback to allow the status
140 of POST to be monitored and/or failures induced. Modify fips_test_suite
141 to use callback. Always run all selftests even if one fails.
144 *) XTS support including algorithm test driver in the fips_gcmtest program.
145 Note: this does increase the maximum key length from 32 to 64 bytes but
146 there should be no binary compatibility issues as existing applications
147 will never use XTS mode.
150 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
151 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
152 performs algorithm blocking for unapproved PRNG types. Also do not
153 set PRNG type in FIPS_mode_set(): leave this to the application.
154 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
155 the standard OpenSSL PRNG: set additional data to a date time vector.
158 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
159 This shouldn't present any incompatibility problems because applications
160 shouldn't be using these directly and any that are will need to rethink
161 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
164 *) Extensive self tests and health checking required by SP800-90 DRBG.
165 Remove strength parameter from FIPS_drbg_instantiate and always
166 instantiate at maximum supported strength.
169 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
172 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
175 *) New function DH_compute_key_padded() to compute a DH key and pad with
176 leading zeroes if needed: this complies with SP800-56A et al.
179 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
180 anything, incomplete, subject to change and largely untested at present.
183 *) Modify fipscanisteronly build option to only build the necessary object
184 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
187 *) Add experimental option FIPSSYMS to give all symbols in
188 fipscanister.o and FIPS or fips prefix. This will avoid
189 conflicts with future versions of OpenSSL. Add perl script
190 util/fipsas.pl to preprocess assembly language source files
191 and rename any affected symbols.
194 *) Add selftest checks and algorithm block of non-fips algorithms in
195 FIPS mode. Remove DES2 from selftests.
198 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
199 return internal method without any ENGINE dependencies. Add new
200 tiny fips sign and verify functions.
203 *) New build option no-ec2m to disable characteristic 2 code.
206 *) New build option "fipscanisteronly". This only builds fipscanister.o
207 and (currently) associated fips utilities. Uses the file Makefile.fips
208 instead of Makefile.org as the prototype.
211 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
212 Update fips_gcmtest to use IV generator.
215 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
216 setting output buffer to NULL. The *Final function must be
217 called although it will not retrieve any additional data. The tag
218 can be set or retrieved with a ctrl. The IV length is by default 12
219 bytes (96 bits) but can be set to an alternative value. If the IV
220 length exceeds the maximum IV length (currently 16 bytes) it cannot be
224 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
225 underlying do_cipher function handles all cipher semantics itself
226 including padding and finalisation. This is useful if (for example)
227 an ENGINE cipher handles block padding itself. The behaviour of
228 do_cipher is subtly changed if this flag is set: the return value
229 is the number of characters written to the output buffer (zero is
230 no longer an error code) or a negative error code. Also if the
231 input buffer is NULL and length 0 finalisation should be performed.
234 *) If a candidate issuer certificate is already part of the constructed
235 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
238 *) Improve forward-security support: add functions
240 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
241 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
243 for use by SSL/TLS servers; the callback function will be called whenever a
244 new session is created, and gets to decide whether the session may be
245 cached to make it resumable (return 0) or not (return 1). (As by the
246 SSL/TLS protocol specifications, the session_id sent by the server will be
247 empty to indicate that the session is not resumable; also, the server will
248 not generate RFC 4507 (RFC 5077) session tickets.)
250 A simple reasonable callback implementation is to return is_forward_secure.
251 This parameter will be set to 1 or 0 depending on the ciphersuite selected
252 by the SSL/TLS server library, indicating whether it can provide forward
254 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
256 *) New -verify_name option in command line utilities to set verification
260 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
261 Add CMAC pkey methods.
264 *) Experimental regnegotiation in s_server -www mode. If the client
265 browses /reneg connection is renegotiated. If /renegcert it is
266 renegotiated requesting a certificate.
269 *) Add an "external" session cache for debugging purposes to s_server. This
270 should help trace issues which normally are only apparent in deployed
271 multi-process servers.
274 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
275 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
276 BIO_set_cipher() and some obscure PEM functions were changed so they
277 can now return an error. The RAND changes required a change to the
278 RAND_METHOD structure.
281 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
282 a gcc attribute to warn if the result of a function is ignored. This
283 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
284 whose return value is often ignored.
287 Changes between 1.0.1e and 1.0.2 [xx XXX xxxx]
289 *) Keep original DTLS digest and encryption contexts in retransmission
290 structures so we can use the previous session parameters if they need
291 to be resent. (CVE-2013-6450)
294 *) TLS pad extension: draft-agl-tls-padding-03
296 Workaround for the "TLS hang bug" (see FAQ and PR#2771): if the
297 TLS client Hello record length value would otherwise be > 255 and
298 less that 512 pad with a dummy extension containing zeroes so it
299 is at least 512 bytes long.
301 [Adam Langley, Steve Henson]
303 *) Add functions to allocate and set the fields of an ECDSA_METHOD
305 [Douglas E. Engert, Steve Henson]
307 *) Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which
308 avoids preferring ECDHE-ECDSA ciphers when the client appears to be
309 Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for
310 several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug
311 is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing
312 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer.
313 [Rob Stradling, Adam Langley]
315 *) New functions OPENSSL_gmtime_diff and ASN1_TIME_diff to find the
316 difference in days and seconds between two tm or ASN1_TIME structures.
319 *) Add -rev test option to s_server to just reverse order of characters
320 received by client and send back to server. Also prints an abbreviated
321 summary of the connection parameters.
324 *) New option -brief for s_client and s_server to print out a brief summary
325 of connection parameters.
328 *) Add callbacks for arbitrary TLS extensions.
329 [Trevor Perrin <trevp@trevp.net> and Ben Laurie]
331 *) New option -crl_download in several openssl utilities to download CRLs
332 from CRLDP extension in certificates.
335 *) New options -CRL and -CRLform for s_client and s_server for CRLs.
338 *) New function X509_CRL_diff to generate a delta CRL from the difference
339 of two full CRLs. Add support to "crl" utility.
342 *) New functions to set lookup_crls function and to retrieve
343 X509_STORE from X509_STORE_CTX.
346 *) Print out deprecated issuer and subject unique ID fields in
350 *) Extend OCSP I/O functions so they can be used for simple general purpose
351 HTTP as well as OCSP. New wrapper function which can be used to download
352 CRLs using the OCSP API.
355 *) Delegate command line handling in s_client/s_server to SSL_CONF APIs.
358 *) SSL_CONF* functions. These provide a common framework for application
359 configuration using configuration files or command lines.
362 *) SSL/TLS tracing code. This parses out SSL/TLS records using the
363 message callback and prints the results. Needs compile time option
364 "enable-ssl-trace". New options to s_client and s_server to enable
368 *) New ctrl and macro to retrieve supported points extensions.
369 Print out extension in s_server and s_client.
372 *) New functions to retrieve certificate signature and signature
376 *) Add functions to retrieve and manipulate the raw cipherlist sent by a
380 *) New Suite B modes for TLS code. These use and enforce the requirements
381 of RFC6460: restrict ciphersuites, only permit Suite B algorithms and
382 only use Suite B curves. The Suite B modes can be set by using the
383 strings "SUITEB128", "SUITEB192" or "SUITEB128ONLY" for the cipherstring.
386 *) New chain verification flags for Suite B levels of security. Check
387 algorithms are acceptable when flags are set in X509_verify_cert.
390 *) Make tls1_check_chain return a set of flags indicating checks passed
391 by a certificate chain. Add additional tests to handle client
392 certificates: checks for matching certificate type and issuer name
396 *) If an attempt is made to use a signature algorithm not in the peer
397 preference list abort the handshake. If client has no suitable
398 signature algorithms in response to a certificate request do not
402 *) If server EC tmp key is not in client preference list abort handshake.
405 *) Add support for certificate stores in CERT structure. This makes it
406 possible to have different stores per SSL structure or one store in
407 the parent SSL_CTX. Include distint stores for certificate chain
408 verification and chain building. New ctrl SSL_CTRL_BUILD_CERT_CHAIN
409 to build and store a certificate chain in CERT structure: returing
410 an error if the chain cannot be built: this will allow applications
411 to test if a chain is correctly configured.
413 Note: if the CERT based stores are not set then the parent SSL_CTX
414 store is used to retain compatibility with existing behaviour.
418 *) New function ssl_set_client_disabled to set a ciphersuite disabled
419 mask based on the current session, check mask when sending client
420 hello and checking the requested ciphersuite.
423 *) New ctrls to retrieve and set certificate types in a certificate
424 request message. Print out received values in s_client. If certificate
425 types is not set with custom values set sensible values based on
426 supported signature algorithms.
429 *) Support for distinct client and server supported signature algorithms.
432 *) Add certificate callback. If set this is called whenever a certificate
433 is required by client or server. An application can decide which
434 certificate chain to present based on arbitrary criteria: for example
435 supported signature algorithms. Add very simple example to s_server.
436 This fixes many of the problems and restrictions of the existing client
437 certificate callback: for example you can now clear an existing
438 certificate and specify the whole chain.
441 *) Add new "valid_flags" field to CERT_PKEY structure which determines what
442 the certificate can be used for (if anything). Set valid_flags field
443 in new tls1_check_chain function. Simplify ssl_set_cert_masks which used
444 to have similar checks in it.
446 Add new "cert_flags" field to CERT structure and include a "strict mode".
447 This enforces some TLS certificate requirements (such as only permitting
448 certificate signature algorithms contained in the supported algorithms
449 extension) which some implementations ignore: this option should be used
450 with caution as it could cause interoperability issues.
453 *) Update and tidy signature algorithm extension processing. Work out
454 shared signature algorithms based on preferences and peer algorithms
455 and print them out in s_client and s_server. Abort handshake if no
456 shared signature algorithms.
459 *) Add new functions to allow customised supported signature algorithms
460 for SSL and SSL_CTX structures. Add options to s_client and s_server
464 *) New function SSL_certs_clear() to delete all references to certificates
465 from an SSL structure. Before this once a certificate had been added
466 it couldn't be removed.
469 *) Integrate hostname, email address and IP address checking with certificate
470 verification. New verify options supporting checking in opensl utility.
473 *) Fixes and wildcard matching support to hostname and email checking
474 functions. Add manual page.
475 [Florian Weimer (Red Hat Product Security Team)]
477 *) New functions to check a hostname email or IP address against a
478 certificate. Add options x509 utility to print results of checks against
482 *) Fix OCSP checking.
483 [Rob Stradling <rob.stradling@comodo.com> and Ben Laurie]
485 *) Initial experimental support for explicitly trusted non-root CAs.
486 OpenSSL still tries to build a complete chain to a root but if an
487 intermediate CA has a trust setting included that is used. The first
488 setting is used: whether to trust (e.g., -addtrust option to the x509
492 *) Add -trusted_first option which attempts to find certificates in the
493 trusted store even if an untrusted chain is also supplied.
496 *) MIPS assembly pack updates: support for MIPS32r2 and SmartMIPS ASE,
497 platform support for Linux and Android.
500 *) Support for linux-x32, ILP32 environment in x86_64 framework.
503 *) RFC 5878 (TLS Authorization Extensions) support.
504 [Emilia Kasper, Adam Langley, Ben Laurie (Google)]
506 *) Experimental multi-implementation support for FIPS capable OpenSSL.
507 When in FIPS mode the approved implementations are used as normal,
508 when not in FIPS mode the internal unapproved versions are used instead.
509 This means that the FIPS capable OpenSSL isn't forced to use the
510 (often lower perfomance) FIPS implementations outside FIPS mode.
513 *) Transparently support X9.42 DH parameters when calling
514 PEM_read_bio_DHparameters. This means existing applications can handle
515 the new parameter format automatically.
518 *) Initial experimental support for X9.42 DH parameter format: mainly
519 to support use of 'q' parameter for RFC5114 parameters.
522 *) Add DH parameters from RFC5114 including test data to dhtest.
525 *) Support for automatic EC temporary key parameter selection. If enabled
526 the most preferred EC parameters are automatically used instead of
527 hardcoded fixed parameters. Now a server just has to call:
528 SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically
529 support ECDH and use the most appropriate parameters.
532 *) Enhance and tidy EC curve and point format TLS extension code. Use
533 static structures instead of allocation if default values are used.
534 New ctrls to set curves we wish to support and to retrieve shared curves.
535 Print out shared curves in s_server. New options to s_server and s_client
536 to set list of supported curves.
539 *) New ctrls to retrieve supported signature algorithms and
540 supported curve values as an array of NIDs. Extend openssl utility
541 to print out received values.
544 *) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert
545 between NIDs and the more common NIST names such as "P-256". Enhance
546 ecparam utility and ECC method to recognise the NIST names for curves.
549 *) Enhance SSL/TLS certificate chain handling to support different
550 chains for each certificate instead of one chain in the parent SSL_CTX.
553 *) Support for fixed DH ciphersuite client authentication: where both
554 server and client use DH certificates with common parameters.
557 *) Support for fixed DH ciphersuites: those requiring DH server
561 Changes between 1.0.1d and 1.0.1e [11 Feb 2013]
563 *) Correct fix for CVE-2013-0169. The original didn't work on AES-NI
564 supporting platforms or when small records were transferred.
565 [Andy Polyakov, Steve Henson]
567 Changes between 1.0.1c and 1.0.1d [5 Feb 2013]
569 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
571 This addresses the flaw in CBC record processing discovered by
572 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
573 at: http://www.isg.rhul.ac.uk/tls/
575 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
576 Security Group at Royal Holloway, University of London
577 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
578 Emilia Käsper for the initial patch.
580 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
582 *) Fix flaw in AESNI handling of TLS 1.2 and 1.1 records for CBC mode
583 ciphersuites which can be exploited in a denial of service attack.
584 Thanks go to and to Adam Langley <agl@chromium.org> for discovering
585 and detecting this bug and to Wolfgang Ettlinger
586 <wolfgang.ettlinger@gmail.com> for independently discovering this issue.
590 *) Return an error when checking OCSP signatures when key is NULL.
591 This fixes a DoS attack. (CVE-2013-0166)
594 *) Make openssl verify return errors.
595 [Chris Palmer <palmer@google.com> and Ben Laurie]
597 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
598 the right response is stapled. Also change SSL_get_certificate()
599 so it returns the certificate actually sent.
600 See http://rt.openssl.org/Ticket/Display.html?id=2836.
601 [Rob Stradling <rob.stradling@comodo.com>]
603 *) Fix possible deadlock when decoding public keys.
606 *) Don't use TLS 1.0 record version number in initial client hello
610 Changes between 1.0.1b and 1.0.1c [10 May 2012]
612 *) Sanity check record length before skipping explicit IV in TLS
613 1.2, 1.1 and DTLS to fix DoS attack.
615 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
616 fuzzing as a service testing platform.
620 *) Initialise tkeylen properly when encrypting CMS messages.
621 Thanks to Solar Designer of Openwall for reporting this issue.
624 *) In FIPS mode don't try to use composite ciphers as they are not
628 Changes between 1.0.1a and 1.0.1b [26 Apr 2012]
630 *) OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and
631 1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately
632 mean any application compiled against OpenSSL 1.0.0 headers setting
633 SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disablng
634 TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to
635 0x10000000L Any application which was previously compiled against
636 OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1
637 will need to be recompiled as a result. Letting be results in
638 inability to disable specifically TLS 1.1 and in client context,
639 in unlike event, limit maximum offered version to TLS 1.0 [see below].
642 *) In order to ensure interoperabilty SSL_OP_NO_protocolX does not
643 disable just protocol X, but all protocols above X *if* there are
644 protocols *below* X still enabled. In more practical terms it means
645 that if application wants to disable TLS1.0 in favor of TLS1.1 and
646 above, it's not sufficient to pass SSL_OP_NO_TLSv1, one has to pass
647 SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2. This applies to
651 Changes between 1.0.1 and 1.0.1a [19 Apr 2012]
653 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
654 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
655 in CRYPTO_realloc_clean.
657 Thanks to Tavis Ormandy, Google Security Team, for discovering this
658 issue and to Adam Langley <agl@chromium.org> for fixing it.
660 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
662 *) Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections.
665 *) Workarounds for some broken servers that "hang" if a client hello
666 record length exceeds 255 bytes.
668 1. Do not use record version number > TLS 1.0 in initial client
669 hello: some (but not all) hanging servers will now work.
670 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate
671 the number of ciphers sent in the client hello. This should be
672 set to an even number, such as 50, for example by passing:
673 -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure.
674 Most broken servers should now work.
675 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable
676 TLS 1.2 client support entirely.
679 *) Fix SEGV in Vector Permutation AES module observed in OpenSSH.
682 Changes between 1.0.0h and 1.0.1 [14 Mar 2012]
684 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET
685 STRING form instead of a DigestInfo.
688 *) The format used for MDC2 RSA signatures is inconsistent between EVP
689 and the RSA_sign/RSA_verify functions. This was made more apparent when
690 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
691 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
692 the correct format in RSA_verify so both forms transparently work.
695 *) Some servers which support TLS 1.0 can choke if we initially indicate
696 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
697 encrypted premaster secret. As a workaround use the maximum pemitted
698 client version in client hello, this should keep such servers happy
699 and still work with previous versions of OpenSSL.
702 *) Add support for TLS/DTLS heartbeats.
703 [Robin Seggelmann <seggelmann@fh-muenster.de>]
705 *) Add support for SCTP.
706 [Robin Seggelmann <seggelmann@fh-muenster.de>]
708 *) Improved PRNG seeding for VOS.
709 [Paul Green <Paul.Green@stratus.com>]
711 *) Extensive assembler packs updates, most notably:
713 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
714 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
715 - x86_64: bit-sliced AES implementation;
716 - ARM: NEON support, contemporary platforms optimizations;
717 - s390x: z196 support;
718 - *: GHASH and GF(2^m) multiplication implementations;
722 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
723 (removal of unnecessary code)
724 [Peter Sylvester <peter.sylvester@edelweb.fr>]
726 *) Add TLS key material exporter from RFC 5705.
729 *) Add DTLS-SRTP negotiation from RFC 5764.
732 *) Add Next Protocol Negotiation,
733 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
734 disabled with a no-npn flag to config or Configure. Code donated
736 [Adam Langley <agl@google.com> and Ben Laurie]
738 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
739 NIST-P256, NIST-P521, with constant-time single point multiplication on
740 typical inputs. Compiler support for the nonstandard type __uint128_t is
741 required to use this (present in gcc 4.4 and later, for 64-bit builds).
742 Code made available under Apache License version 2.0.
744 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
745 line to include this in your build of OpenSSL, and run "make depend" (or
746 "make update"). This enables the following EC_METHODs:
748 EC_GFp_nistp224_method()
749 EC_GFp_nistp256_method()
750 EC_GFp_nistp521_method()
752 EC_GROUP_new_by_curve_name() will automatically use these (while
753 EC_GROUP_new_curve_GFp() currently prefers the more flexible
755 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
757 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
758 all platforms. Move ssize_t definition from e_os.h to the public
759 header file e_os2.h as it now appears in public header file cms.h
762 *) New -sigopt option to the ca, req and x509 utilities. Additional
763 signature parameters can be passed using this option and in
767 *) Add RSA PSS signing function. This will generate and set the
768 appropriate AlgorithmIdentifiers for PSS based on those in the
769 corresponding EVP_MD_CTX structure. No application support yet.
772 *) Support for companion algorithm specific ASN1 signing routines.
773 New function ASN1_item_sign_ctx() signs a pre-initialised
774 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
775 the appropriate parameters.
778 *) Add new algorithm specific ASN1 verification initialisation function
779 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
780 handling will be the same no matter what EVP_PKEY_METHOD is used.
781 Add a PSS handler to support verification of PSS signatures: checked
782 against a number of sample certificates.
785 *) Add signature printing for PSS. Add PSS OIDs.
786 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
788 *) Add algorithm specific signature printing. An individual ASN1 method
789 can now print out signatures instead of the standard hex dump.
791 More complex signatures (e.g. PSS) can print out more meaningful
792 information. Include DSA version that prints out the signature
796 *) Password based recipient info support for CMS library: implementing
800 *) Split password based encryption into PBES2 and PBKDF2 functions. This
801 neatly separates the code into cipher and PBE sections and is required
802 for some algorithms that split PBES2 into separate pieces (such as
806 *) Session-handling fixes:
807 - Fix handling of connections that are resuming with a session ID,
808 but also support Session Tickets.
809 - Fix a bug that suppressed issuing of a new ticket if the client
810 presented a ticket with an expired session.
811 - Try to set the ticket lifetime hint to something reasonable.
812 - Make tickets shorter by excluding irrelevant information.
813 - On the client side, don't ignore renewed tickets.
814 [Adam Langley, Bodo Moeller (Google)]
816 *) Fix PSK session representation.
819 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
821 This work was sponsored by Intel.
824 *) Add GCM support to TLS library. Some custom code is needed to split
825 the IV between the fixed (from PRF) and explicit (from TLS record)
826 portions. This adds all GCM ciphersuites supported by RFC5288 and
827 RFC5289. Generalise some AES* cipherstrings to inlclude GCM and
828 add a special AESGCM string for GCM only.
831 *) Expand range of ctrls for AES GCM. Permit setting invocation
832 field on decrypt and retrieval of invocation field only on encrypt.
835 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
836 As required by RFC5289 these ciphersuites cannot be used if for
837 versions of TLS earlier than 1.2.
840 *) For FIPS capable OpenSSL interpret a NULL default public key method
841 as unset and return the appopriate default but do *not* set the default.
842 This means we can return the appopriate method in applications that
843 swicth between FIPS and non-FIPS modes.
846 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
847 ENGINE is used then we cannot handle that in the FIPS module so we
848 keep original code iff non-FIPS operations are allowed.
851 *) Add -attime option to openssl utilities.
852 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
854 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
857 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
858 FIPS EC methods unconditionally for now.
861 *) New build option no-ec2m to disable characteristic 2 code.
864 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
865 all cases can be covered as some introduce binary incompatibilities.
868 *) Redirect RSA operations to FIPS module including keygen,
869 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
872 *) Add similar low level API blocking to ciphers.
875 *) Low level digest APIs are not approved in FIPS mode: any attempt
876 to use these will cause a fatal error. Applications that *really* want
877 to use them can use the private_* version instead.
880 *) Redirect cipher operations to FIPS module for FIPS builds.
883 *) Redirect digest operations to FIPS module for FIPS builds.
886 *) Update build system to add "fips" flag which will link in fipscanister.o
887 for static and shared library builds embedding a signature if needed.
890 *) Output TLS supported curves in preference order instead of numerical
891 order. This is currently hardcoded for the highest order curves first.
892 This should be configurable so applications can judge speed vs strength.
895 *) Add TLS v1.2 server support for client authentication.
898 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
902 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
903 FIPS modules versions.
906 *) Add TLS v1.2 client side support for client authentication. Keep cache
907 of handshake records longer as we don't know the hash algorithm to use
908 until after the certificate request message is received.
911 *) Initial TLS v1.2 client support. Add a default signature algorithms
912 extension including all the algorithms we support. Parse new signature
913 format in client key exchange. Relax some ECC signing restrictions for
914 TLS v1.2 as indicated in RFC5246.
917 *) Add server support for TLS v1.2 signature algorithms extension. Switch
918 to new signature format when needed using client digest preference.
919 All server ciphersuites should now work correctly in TLS v1.2. No client
920 support yet and no support for client certificates.
923 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
924 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
925 ciphersuites. At present only RSA key exchange ciphersuites work with
926 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
927 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
928 and version checking.
931 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
932 with this defined it will not be affected by any changes to ssl internal
933 structures. Add several utility functions to allow openssl application
934 to work with OPENSSL_NO_SSL_INTERN defined.
938 [Tom Wu <tjw@cs.stanford.edu> and Ben Laurie]
940 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
943 *) Permit abbreviated handshakes when renegotiating using the function
944 SSL_renegotiate_abbreviated().
945 [Robin Seggelmann <seggelmann@fh-muenster.de>]
947 *) Add call to ENGINE_register_all_complete() to
948 ENGINE_load_builtin_engines(), so some implementations get used
949 automatically instead of needing explicit application support.
952 *) Add support for TLS key exporter as described in RFC5705.
953 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
955 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
956 a few changes are required:
958 Add SSL_OP_NO_TLSv1_1 flag.
960 Update version checking logic to handle version 1.1.
961 Add explicit IV handling (ported from DTLS code).
962 Add command line options to s_client/s_server.
965 Changes between 1.0.0j and 1.0.0k [5 Feb 2013]
967 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
969 This addresses the flaw in CBC record processing discovered by
970 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
971 at: http://www.isg.rhul.ac.uk/tls/
973 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
974 Security Group at Royal Holloway, University of London
975 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
976 Emilia Käsper for the initial patch.
978 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
980 *) Return an error when checking OCSP signatures when key is NULL.
981 This fixes a DoS attack. (CVE-2013-0166)
984 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
985 the right response is stapled. Also change SSL_get_certificate()
986 so it returns the certificate actually sent.
987 See http://rt.openssl.org/Ticket/Display.html?id=2836.
989 [Rob Stradling <rob.stradling@comodo.com>]
991 *) Fix possible deadlock when decoding public keys.
994 Changes between 1.0.0i and 1.0.0j [10 May 2012]
996 [NB: OpenSSL 1.0.0i and later 1.0.0 patch levels were released after
999 *) Sanity check record length before skipping explicit IV in DTLS
1002 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
1003 fuzzing as a service testing platform.
1007 *) Initialise tkeylen properly when encrypting CMS messages.
1008 Thanks to Solar Designer of Openwall for reporting this issue.
1011 Changes between 1.0.0h and 1.0.0i [19 Apr 2012]
1013 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
1014 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
1015 in CRYPTO_realloc_clean.
1017 Thanks to Tavis Ormandy, Google Security Team, for discovering this
1018 issue and to Adam Langley <agl@chromium.org> for fixing it.
1020 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
1022 Changes between 1.0.0g and 1.0.0h [12 Mar 2012]
1024 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
1025 in CMS and PKCS7 code. When RSA decryption fails use a random key for
1026 content decryption and always return the same error. Note: this attack
1027 needs on average 2^20 messages so it only affects automated senders. The
1028 old behaviour can be reenabled in the CMS code by setting the
1029 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
1030 an MMA defence is not necessary.
1031 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
1032 this issue. (CVE-2012-0884)
1035 *) Fix CVE-2011-4619: make sure we really are receiving a
1036 client hello before rejecting multiple SGC restarts. Thanks to
1037 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
1040 Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
1042 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
1043 Thanks to Antonio Martin, Enterprise Secure Access Research and
1044 Development, Cisco Systems, Inc. for discovering this bug and
1045 preparing a fix. (CVE-2012-0050)
1048 Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
1050 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
1051 of the Vaudenay padding oracle attack on CBC mode encryption
1052 which enables an efficient plaintext recovery attack against
1053 the OpenSSL implementation of DTLS. Their attack exploits timing
1054 differences arising during decryption processing. A research
1055 paper describing this attack can be found at:
1056 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
1057 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
1058 Security Group at Royal Holloway, University of London
1059 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
1060 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
1061 for preparing the fix. (CVE-2011-4108)
1062 [Robin Seggelmann, Michael Tuexen]
1064 *) Clear bytes used for block padding of SSL 3.0 records.
1066 [Adam Langley (Google)]
1068 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
1069 Kadianakis <desnacked@gmail.com> for discovering this issue and
1070 Adam Langley for preparing the fix. (CVE-2011-4619)
1071 [Adam Langley (Google)]
1073 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
1074 [Andrey Kulikov <amdeich@gmail.com>]
1076 *) Prevent malformed RFC3779 data triggering an assertion failure.
1077 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
1078 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
1079 [Rob Austein <sra@hactrn.net>]
1081 *) Improved PRNG seeding for VOS.
1082 [Paul Green <Paul.Green@stratus.com>]
1084 *) Fix ssl_ciph.c set-up race.
1085 [Adam Langley (Google)]
1087 *) Fix spurious failures in ecdsatest.c.
1088 [Emilia Käsper (Google)]
1090 *) Fix the BIO_f_buffer() implementation (which was mixing different
1091 interpretations of the '..._len' fields).
1092 [Adam Langley (Google)]
1094 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
1095 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
1096 threads won't reuse the same blinding coefficients.
1098 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
1099 lock to call BN_BLINDING_invert_ex, and avoids one use of
1100 BN_BLINDING_update for each BN_BLINDING structure (previously,
1101 the last update always remained unused).
1102 [Emilia Käsper (Google)]
1104 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
1105 [Bob Buckholz (Google)]
1107 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
1109 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
1110 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
1111 [Kaspar Brand <ossl@velox.ch>]
1113 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
1114 for multi-threaded use of ECDH. (CVE-2011-3210)
1115 [Adam Langley (Google)]
1117 *) Fix x509_name_ex_d2i memory leak on bad inputs.
1120 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
1121 signature public key algorithm by using OID xref utilities instead.
1122 Before this you could only use some ECC ciphersuites with SHA1 only.
1125 *) Add protection against ECDSA timing attacks as mentioned in the paper
1126 by Billy Bob Brumley and Nicola Tuveri, see:
1128 http://eprint.iacr.org/2011/232.pdf
1130 [Billy Bob Brumley and Nicola Tuveri]
1132 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
1134 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
1135 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
1137 *) Fix bug in string printing code: if *any* escaping is enabled we must
1138 escape the escape character (backslash) or the resulting string is
1142 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
1144 *) Disable code workaround for ancient and obsolete Netscape browsers
1145 and servers: an attacker can use it in a ciphersuite downgrade attack.
1146 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
1149 *) Fixed J-PAKE implementation error, originally discovered by
1150 Sebastien Martini, further info and confirmation from Stefan
1151 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
1154 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
1156 *) Fix extension code to avoid race conditions which can result in a buffer
1157 overrun vulnerability: resumed sessions must not be modified as they can
1158 be shared by multiple threads. CVE-2010-3864
1161 *) Fix WIN32 build system to correctly link an ENGINE directory into
1165 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
1167 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
1169 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
1171 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
1173 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
1174 context. The operation can be customised via the ctrl mechanism in
1175 case ENGINEs want to include additional functionality.
1178 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
1181 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
1182 output hashes compatible with older versions of OpenSSL.
1183 [Willy Weisz <weisz@vcpc.univie.ac.at>]
1185 *) Fix compression algorithm handling: if resuming a session use the
1186 compression algorithm of the resumed session instead of determining
1187 it from client hello again. Don't allow server to change algorithm.
1190 *) Add load_crls() function to apps tidying load_certs() too. Add option
1191 to verify utility to allow additional CRLs to be included.
1194 *) Update OCSP request code to permit adding custom headers to the request:
1195 some responders need this.
1198 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
1200 [Julia Lawall <julia@diku.dk>]
1202 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
1203 needlessly dereferenced structures, used obsolete functions and
1204 didn't handle all updated verify codes correctly.
1207 *) Disable MD2 in the default configuration.
1210 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
1211 indicate the initial BIO being pushed or popped. This makes it possible
1212 to determine whether the BIO is the one explicitly called or as a result
1213 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
1214 it handles reference counts correctly and doesn't zero out the I/O bio
1215 when it is not being explicitly popped. WARNING: applications which
1216 included workarounds for the old buggy behaviour will need to be modified
1217 or they could free up already freed BIOs.
1220 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
1221 renaming to all platforms (within the 0.9.8 branch, this was
1222 done conditionally on Netware platforms to avoid a name clash).
1223 [Guenter <lists@gknw.net>]
1225 *) Add ECDHE and PSK support to DTLS.
1226 [Michael Tuexen <tuexen@fh-muenster.de>]
1228 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
1232 *) Add "missing" function EVP_MD_flags() (without this the only way to
1233 retrieve a digest flags is by accessing the structure directly. Update
1234 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
1235 or cipher is registered as in the "from" argument. Print out all
1236 registered digests in the dgst usage message instead of manually
1237 attempting to work them out.
1240 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
1241 this allows the use of compression and extensions. Change default cipher
1242 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
1243 by default unless an application cipher string requests it.
1246 *) Alter match criteria in PKCS12_parse(). It used to try to use local
1247 key ids to find matching certificates and keys but some PKCS#12 files
1248 don't follow the (somewhat unwritten) rules and this strategy fails.
1249 Now just gather all certificates together and the first private key
1250 then look for the first certificate that matches the key.
1253 *) Support use of registered digest and cipher names for dgst and cipher
1254 commands instead of having to add each one as a special case. So now
1261 openssl dgst -sha256 foo
1263 and this works for ENGINE based algorithms too.
1267 *) Update Gost ENGINE to support parameter files.
1268 [Victor B. Wagner <vitus@cryptocom.ru>]
1270 *) Support GeneralizedTime in ca utility.
1271 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
1273 *) Enhance the hash format used for certificate directory links. The new
1274 form uses the canonical encoding (meaning equivalent names will work
1275 even if they aren't identical) and uses SHA1 instead of MD5. This form
1276 is incompatible with the older format and as a result c_rehash should
1277 be used to rebuild symbolic links.
1280 *) Make PKCS#8 the default write format for private keys, replacing the
1281 traditional format. This form is standardised, more secure and doesn't
1282 include an implicit MD5 dependency.
1285 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
1286 committed to OpenSSL should pass this lot as a minimum.
1289 *) Add session ticket override functionality for use by EAP-FAST.
1290 [Jouni Malinen <j@w1.fi>]
1292 *) Modify HMAC functions to return a value. Since these can be implemented
1293 in an ENGINE errors can occur.
1296 *) Type-checked OBJ_bsearch_ex.
1299 *) Type-checked OBJ_bsearch. Also some constification necessitated
1300 by type-checking. Still to come: TXT_DB, bsearch(?),
1301 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
1305 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
1306 seconds to a tm structure directly, instead of going through OS
1307 specific date routines. This avoids any issues with OS routines such
1308 as the year 2038 bug. New *_adj() functions for ASN1 time structures
1309 and X509_time_adj_ex() to cover the extended range. The existing
1310 X509_time_adj() is still usable and will no longer have any date issues.
1313 *) Delta CRL support. New use deltas option which will attempt to locate
1314 and search any appropriate delta CRLs available.
1316 This work was sponsored by Google.
1319 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
1320 code and add additional score elements. Validate alternate CRL paths
1321 as part of the CRL checking and indicate a new error "CRL path validation
1322 error" in this case. Applications wanting additional details can use
1323 the verify callback and check the new "parent" field. If this is not
1324 NULL CRL path validation is taking place. Existing applications wont
1325 see this because it requires extended CRL support which is off by
1328 This work was sponsored by Google.
1331 *) Support for freshest CRL extension.
1333 This work was sponsored by Google.
1336 *) Initial indirect CRL support. Currently only supported in the CRLs
1337 passed directly and not via lookup. Process certificate issuer
1338 CRL entry extension and lookup CRL entries by bother issuer name
1339 and serial number. Check and process CRL issuer entry in IDP extension.
1341 This work was sponsored by Google.
1344 *) Add support for distinct certificate and CRL paths. The CRL issuer
1345 certificate is validated separately in this case. Only enabled if
1346 an extended CRL support flag is set: this flag will enable additional
1347 CRL functionality in future.
1349 This work was sponsored by Google.
1352 *) Add support for policy mappings extension.
1354 This work was sponsored by Google.
1357 *) Fixes to pathlength constraint, self issued certificate handling,
1358 policy processing to align with RFC3280 and PKITS tests.
1360 This work was sponsored by Google.
1363 *) Support for name constraints certificate extension. DN, email, DNS
1364 and URI types are currently supported.
1366 This work was sponsored by Google.
1369 *) To cater for systems that provide a pointer-based thread ID rather
1370 than numeric, deprecate the current numeric thread ID mechanism and
1371 replace it with a structure and associated callback type. This
1372 mechanism allows a numeric "hash" to be extracted from a thread ID in
1373 either case, and on platforms where pointers are larger than 'long',
1374 mixing is done to help ensure the numeric 'hash' is usable even if it
1375 can't be guaranteed unique. The default mechanism is to use "&errno"
1376 as a pointer-based thread ID to distinguish between threads.
1378 Applications that want to provide their own thread IDs should now use
1379 CRYPTO_THREADID_set_callback() to register a callback that will call
1380 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
1382 Note that ERR_remove_state() is now deprecated, because it is tied
1383 to the assumption that thread IDs are numeric. ERR_remove_state(0)
1384 to free the current thread's error state should be replaced by
1385 ERR_remove_thread_state(NULL).
1387 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
1388 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
1389 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
1390 application was previously providing a numeric thread callback that
1391 was inappropriate for distinguishing threads, then uniqueness might
1392 have been obtained with &errno that happened immediately in the
1393 intermediate development versions of OpenSSL; this is no longer the
1394 case, the numeric thread callback will now override the automatic use
1396 [Geoff Thorpe, with help from Bodo Moeller]
1398 *) Initial support for different CRL issuing certificates. This covers a
1399 simple case where the self issued certificates in the chain exist and
1400 the real CRL issuer is higher in the existing chain.
1402 This work was sponsored by Google.
1405 *) Removed effectively defunct crypto/store from the build.
1408 *) Revamp of STACK to provide stronger type-checking. Still to come:
1409 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
1410 ASN1_STRING, CONF_VALUE.
1413 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
1414 RAM on SSL connections. This option can save about 34k per idle SSL.
1417 *) Revamp of LHASH to provide stronger type-checking. Still to come:
1418 STACK, TXT_DB, bsearch, qsort.
1421 *) Initial support for Cryptographic Message Syntax (aka CMS) based
1422 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
1423 support for data, signedData, compressedData, digestedData and
1424 encryptedData, envelopedData types included. Scripts to check against
1425 RFC4134 examples draft and interop and consistency checks of many
1426 content types and variants.
1429 *) Add options to enc utility to support use of zlib compression BIO.
1432 *) Extend mk1mf to support importing of options and assembly language
1433 files from Configure script, currently only included in VC-WIN32.
1434 The assembly language rules can now optionally generate the source
1435 files from the associated perl scripts.
1438 *) Implement remaining functionality needed to support GOST ciphersuites.
1439 Interop testing has been performed using CryptoPro implementations.
1440 [Victor B. Wagner <vitus@cryptocom.ru>]
1442 *) s390x assembler pack.
1445 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
1449 *) Implement Opaque PRF Input TLS extension as specified in
1450 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
1451 official specification yet and no extension type assignment by
1452 IANA exists, this extension (for now) will have to be explicitly
1453 enabled when building OpenSSL by providing the extension number
1454 to use. For example, specify an option
1456 -DTLSEXT_TYPE_opaque_prf_input=0x9527
1458 to the "config" or "Configure" script to enable the extension,
1459 assuming extension number 0x9527 (which is a completely arbitrary
1460 and unofficial assignment based on the MD5 hash of the Internet
1461 Draft). Note that by doing so, you potentially lose
1462 interoperability with other TLS implementations since these might
1463 be using the same extension number for other purposes.
1465 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
1466 opaque PRF input value to use in the handshake. This will create
1467 an interal copy of the length-'len' string at 'src', and will
1468 return non-zero for success.
1470 To get more control and flexibility, provide a callback function
1473 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
1474 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
1478 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
1481 Callback function 'cb' will be called in handshakes, and is
1482 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
1483 Argument 'arg' is for application purposes (the value as given to
1484 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
1485 be provided to the callback function). The callback function
1486 has to return non-zero to report success: usually 1 to use opaque
1487 PRF input just if possible, or 2 to enforce use of the opaque PRF
1488 input. In the latter case, the library will abort the handshake
1489 if opaque PRF input is not successfully negotiated.
1491 Arguments 'peerinput' and 'len' given to the callback function
1492 will always be NULL and 0 in the case of a client. A server will
1493 see the client's opaque PRF input through these variables if
1494 available (NULL and 0 otherwise). Note that if the server
1495 provides an opaque PRF input, the length must be the same as the
1496 length of the client's opaque PRF input.
1498 Note that the callback function will only be called when creating
1499 a new session (session resumption can resume whatever was
1500 previously negotiated), and will not be called in SSL 2.0
1501 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
1502 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
1503 for applications that need to enforce opaque PRF input.
1507 *) Update ssl code to support digests other than SHA1+MD5 for handshake
1510 [Victor B. Wagner <vitus@cryptocom.ru>]
1512 *) Add RFC4507 support to OpenSSL. This includes the corrections in
1513 RFC4507bis. The encrypted ticket format is an encrypted encoded
1514 SSL_SESSION structure, that way new session features are automatically
1517 If a client application caches session in an SSL_SESSION structure
1518 support is transparent because tickets are now stored in the encoded
1521 The SSL_CTX structure automatically generates keys for ticket
1522 protection in servers so again support should be possible
1523 with no application modification.
1525 If a client or server wishes to disable RFC4507 support then the option
1526 SSL_OP_NO_TICKET can be set.
1528 Add a TLS extension debugging callback to allow the contents of any client
1529 or server extensions to be examined.
1531 This work was sponsored by Google.
1534 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
1535 OpenSSL should now compile cleanly on gcc 4.2
1536 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
1538 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
1539 support including streaming MAC support: this is required for GOST
1540 ciphersuite support.
1541 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
1543 *) Add option -stream to use PKCS#7 streaming in smime utility. New
1544 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
1545 to output in BER and PEM format.
1548 *) Experimental support for use of HMAC via EVP_PKEY interface. This
1549 allows HMAC to be handled via the EVP_DigestSign*() interface. The
1550 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
1551 ENGINE support for HMAC keys which are unextractable. New -mac and
1552 -macopt options to dgst utility.
1555 *) New option -sigopt to dgst utility. Update dgst to use
1556 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
1557 alternative signing paramaters such as X9.31 or PSS in the dgst
1561 *) Change ssl_cipher_apply_rule(), the internal function that does
1562 the work each time a ciphersuite string requests enabling
1563 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
1564 removing ("!foo+bar") a class of ciphersuites: Now it maintains
1565 the order of disabled ciphersuites such that those ciphersuites
1566 that most recently went from enabled to disabled not only stay
1567 in order with respect to each other, but also have higher priority
1568 than other disabled ciphersuites the next time ciphersuites are
1571 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
1572 the same ciphersuites as with "HIGH" alone, but in a specific
1573 order where the PSK ciphersuites come first (since they are the
1574 most recently disabled ciphersuites when "HIGH" is parsed).
1576 Also, change ssl_create_cipher_list() (using this new
1577 funcionality) such that between otherwise identical
1578 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
1582 *) Change ssl_create_cipher_list() so that it automatically
1583 arranges the ciphersuites in reasonable order before starting
1584 to process the rule string. Thus, the definition for "DEFAULT"
1585 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
1586 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
1587 This makes it much easier to arrive at a reasonable default order
1588 in applications for which anonymous ciphers are OK (meaning
1589 that you can't actually use DEFAULT).
1590 [Bodo Moeller; suggested by Victor Duchovni]
1592 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
1593 processing) into multiple integers instead of setting
1594 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
1595 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
1596 (These masks as well as the individual bit definitions are hidden
1597 away into the non-exported interface ssl/ssl_locl.h, so this
1598 change to the definition of the SSL_CIPHER structure shouldn't
1599 affect applications.) This give us more bits for each of these
1600 categories, so there is no longer a need to coagulate AES128 and
1601 AES256 into a single algorithm bit, and to coagulate Camellia128
1602 and Camellia256 into a single algorithm bit, which has led to all
1605 Thus, among other things, the kludge introduced in 0.9.7m and
1606 0.9.8e for masking out AES256 independently of AES128 or masking
1607 out Camellia256 independently of AES256 is not needed here in 0.9.9.
1609 With the change, we also introduce new ciphersuite aliases that
1610 so far were missing: "AES128", "AES256", "CAMELLIA128", and
1614 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
1615 Use the leftmost N bytes of the signature input if the input is
1616 larger than the prime q (with N being the size in bytes of q).
1619 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
1620 it yet and it is largely untested.
1623 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
1626 *) Initial incomplete changes to avoid need for function casts in OpenSSL
1627 some compilers (gcc 4.2 and later) reject their use. Safestack is
1628 reimplemented. Update ASN1 to avoid use of legacy functions.
1631 *) Win32/64 targets are linked with Winsock2.
1634 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
1635 to external functions. This can be used to increase CRL handling
1636 efficiency especially when CRLs are very large by (for example) storing
1637 the CRL revoked certificates in a database.
1640 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
1641 new CRLs added to a directory can be used. New command line option
1642 -verify_return_error to s_client and s_server. This causes real errors
1643 to be returned by the verify callback instead of carrying on no matter
1644 what. This reflects the way a "real world" verify callback would behave.
1647 *) GOST engine, supporting several GOST algorithms and public key formats.
1648 Kindly donated by Cryptocom.
1651 *) Partial support for Issuing Distribution Point CRL extension. CRLs
1652 partitioned by DP are handled but no indirect CRL or reason partitioning
1653 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
1654 selected via a scoring technique which handles IDP and AKID in CRLs.
1657 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
1658 will ultimately be used for all verify operations: this will remove the
1659 X509_STORE dependency on certificate verification and allow alternative
1660 lookup methods. X509_STORE based implementations of these two callbacks.
1663 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
1664 Modify get_crl() to find a valid (unexpired) CRL if possible.
1667 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
1668 this would be called X509_CRL_cmp() but that name is already used by
1669 a function that just compares CRL issuer names. Cache several CRL
1670 extensions in X509_CRL structure and cache CRLDP in X509.
1673 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
1674 this maps equivalent X509_NAME structures into a consistent structure.
1675 Name comparison can then be performed rapidly using memcmp().
1678 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
1682 *) Allow digests to supply their own micalg string for S/MIME type using
1683 the ctrl EVP_MD_CTRL_MICALG.
1686 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
1687 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
1688 ctrl. It can then customise the structure before and/or after signing
1692 *) New function OBJ_add_sigid() to allow application defined signature OIDs
1693 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
1694 to free up any added signature OIDs.
1697 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
1698 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
1699 digest and cipher tables. New options added to openssl utility:
1700 list-message-digest-algorithms and list-cipher-algorithms.
1703 *) Change the array representation of binary polynomials: the list
1704 of degrees of non-zero coefficients is now terminated with -1.
1705 Previously it was terminated with 0, which was also part of the
1706 value; thus, the array representation was not applicable to
1707 polynomials where t^0 has coefficient zero. This change makes
1708 the array representation useful in a more general context.
1711 *) Various modifications and fixes to SSL/TLS cipher string
1712 handling. For ECC, the code now distinguishes between fixed ECDH
1713 with RSA certificates on the one hand and with ECDSA certificates
1714 on the other hand, since these are separate ciphersuites. The
1715 unused code for Fortezza ciphersuites has been removed.
1717 For consistency with EDH, ephemeral ECDH is now called "EECDH"
1718 (not "ECDHE"). For consistency with the code for DH
1719 certificates, use of ECDH certificates is now considered ECDH
1720 authentication, not RSA or ECDSA authentication (the latter is
1721 merely the CA's signing algorithm and not actively used in the
1724 The temporary ciphersuite alias "ECCdraft" is no longer
1725 available, and ECC ciphersuites are no longer excluded from "ALL"
1726 and "DEFAULT". The following aliases now exist for RFC 4492
1727 ciphersuites, most of these by analogy with the DH case:
1729 kECDHr - ECDH cert, signed with RSA
1730 kECDHe - ECDH cert, signed with ECDSA
1731 kECDH - ECDH cert (signed with either RSA or ECDSA)
1732 kEECDH - ephemeral ECDH
1733 ECDH - ECDH cert or ephemeral ECDH
1739 AECDH - anonymous ECDH
1740 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
1744 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
1745 Use correct micalg parameters depending on digest(s) in signed message.
1748 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
1749 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
1752 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
1753 an engine to register a method. Add ENGINE lookups for methods and
1754 functional reference processing.
1757 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
1758 EVP_{Sign,Verify}* which allow an application to customise the signature
1762 *) New -resign option to smime utility. This adds one or more signers
1763 to an existing PKCS#7 signedData structure. Also -md option to use an
1764 alternative message digest algorithm for signing.
1767 *) Tidy up PKCS#7 routines and add new functions to make it easier to
1768 create PKCS7 structures containing multiple signers. Update smime
1769 application to support multiple signers.
1772 *) New -macalg option to pkcs12 utility to allow setting of an alternative
1776 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
1777 Reorganize PBE internals to lookup from a static table using NIDs,
1778 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
1779 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
1780 PRF which will be automatically used with PBES2.
1783 *) Replace the algorithm specific calls to generate keys in "req" with the
1787 *) Update PKCS#7 enveloped data routines to use new API. This is now
1788 supported by any public key method supporting the encrypt operation. A
1789 ctrl is added to allow the public key algorithm to examine or modify
1790 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
1794 *) Add a ctrl to asn1 method to allow a public key algorithm to express
1795 a default digest type to use. In most cases this will be SHA1 but some
1796 algorithms (such as GOST) need to specify an alternative digest. The
1797 return value indicates how strong the prefernce is 1 means optional and
1798 2 is mandatory (that is it is the only supported type). Modify
1799 ASN1_item_sign() to accept a NULL digest argument to indicate it should
1800 use the default md. Update openssl utilities to use the default digest
1801 type for signing if it is not explicitly indicated.
1804 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
1805 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
1806 signing method from the key type. This effectively removes the link
1807 between digests and public key types.
1810 *) Add an OID cross reference table and utility functions. Its purpose is to
1811 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
1812 rsaEncryption. This will allow some of the algorithm specific hackery
1813 needed to use the correct OID to be removed.
1816 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
1817 structures for PKCS7_sign(). They are now set up by the relevant public
1821 *) Add provisional EC pkey method with support for ECDSA and ECDH.
1824 *) Add support for key derivation (agreement) in the API, DH method and
1828 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
1829 public and private key formats. As a side effect these add additional
1830 command line functionality not previously available: DSA signatures can be
1831 generated and verified using pkeyutl and DH key support and generation in
1836 [Oliver Tappe <zooey@hirschkaefer.de>]
1838 *) New make target "install_html_docs" installs HTML renditions of the
1840 [Oliver Tappe <zooey@hirschkaefer.de>]
1842 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
1843 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
1844 support key and parameter generation and add initial key generation
1845 functionality for RSA.
1848 *) Add functions for main EVP_PKEY_method operations. The undocumented
1849 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
1850 EVP_PKEY_{encrypt,decrypt}_old.
1853 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
1854 key API, doesn't do much yet.
1857 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
1858 public key algorithms. New option to openssl utility:
1859 "list-public-key-algorithms" to print out info.
1862 *) Implement the Supported Elliptic Curves Extension for
1863 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1866 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
1867 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
1870 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
1871 utilities such as rsa, dsa, dsaparam etc except they process any key
1875 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
1876 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
1877 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
1881 *) Initial support for pluggable public key ASN1.
1882 De-spaghettify the public key ASN1 handling. Move public and private
1883 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
1884 algorithm specific handling to a single module within the relevant
1885 algorithm directory. Add functions to allow (near) opaque processing
1886 of public and private key structures.
1889 *) Implement the Supported Point Formats Extension for
1890 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1893 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
1894 for the psk identity [hint] and the psk callback functions to the
1895 SSL_SESSION, SSL and SSL_CTX structure.
1898 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
1902 SSL_CTX_use_psk_identity_hint
1903 SSL_get_psk_identity_hint
1904 SSL_get_psk_identity
1905 SSL_use_psk_identity_hint
1907 [Mika Kousa and Pasi Eronen of Nokia Corporation]
1909 *) Add RFC 3161 compliant time stamp request creation, response generation
1910 and response verification functionality.
1911 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
1913 *) Add initial support for TLS extensions, specifically for the server_name
1914 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1915 have new members for a host name. The SSL data structure has an
1916 additional member SSL_CTX *initial_ctx so that new sessions can be
1917 stored in that context to allow for session resumption, even after the
1918 SSL has been switched to a new SSL_CTX in reaction to a client's
1919 server_name extension.
1921 New functions (subject to change):
1923 SSL_get_servername()
1924 SSL_get_servername_type()
1927 New CTRL codes and macros (subject to change):
1929 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1930 - SSL_CTX_set_tlsext_servername_callback()
1931 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1932 - SSL_CTX_set_tlsext_servername_arg()
1933 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1935 openssl s_client has a new '-servername ...' option.
1937 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1938 '-key2 ...', '-servername_fatal' (subject to change). This allows
1939 testing the HostName extension for a specific single host name ('-cert'
1940 and '-key' remain fallbacks for handshakes without HostName
1941 negotiation). If the unrecogninzed_name alert has to be sent, this by
1942 default is a warning; it becomes fatal with the '-servername_fatal'
1945 [Peter Sylvester, Remy Allais, Christophe Renou]
1947 *) Whirlpool hash implementation is added.
1950 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
1951 bn(64,32). Because of instruction set limitations it doesn't have
1952 any negative impact on performance. This was done mostly in order
1953 to make it possible to share assembler modules, such as bn_mul_mont
1954 implementations, between 32- and 64-bit builds without hassle.
1957 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
1958 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
1962 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
1963 dedicated Montgomery multiplication procedure, is introduced.
1964 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
1965 "64-bit" performance on certain 32-bit targets.
1968 *) New option SSL_OP_NO_COMP to disable use of compression selectively
1969 in SSL structures. New SSL ctrl to set maximum send fragment size.
1970 Save memory by seeting the I/O buffer sizes dynamically instead of
1971 using the maximum available value.
1974 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
1975 in addition to the text details.
1978 *) Very, very preliminary EXPERIMENTAL support for printing of general
1979 ASN1 structures. This currently produces rather ugly output and doesn't
1980 handle several customised structures at all.
1983 *) Integrated support for PVK file format and some related formats such
1984 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
1985 these in the 'rsa' and 'dsa' utilities.
1988 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
1991 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
1992 place for the (very old) "NETSCAPE" format certificates which are now
1993 handled using new ASN1 code equivalents.
1996 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
1997 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
1998 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
2001 *) Modify CRL distribution points extension code to print out previously
2002 unsupported fields. Enhance extension setting code to allow setting of
2006 *) Add print and set support for Issuing Distribution Point CRL extension.
2009 *) Change 'Configure' script to enable Camellia by default.
2012 Changes between 0.9.8x and 0.9.8y [5 Feb 2013]
2014 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
2016 This addresses the flaw in CBC record processing discovered by
2017 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
2018 at: http://www.isg.rhul.ac.uk/tls/
2020 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
2021 Security Group at Royal Holloway, University of London
2022 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
2023 Emilia Käsper for the initial patch.
2025 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
2027 *) Return an error when checking OCSP signatures when key is NULL.
2028 This fixes a DoS attack. (CVE-2013-0166)
2031 *) Return an error when checking OCSP signatures when key is NULL.
2032 This fixes a DoS attack. (CVE-2013-0166)
2035 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
2036 the right response is stapled. Also change SSL_get_certificate()
2037 so it returns the certificate actually sent.
2038 See http://rt.openssl.org/Ticket/Display.html?id=2836.
2039 (This is a backport)
2040 [Rob Stradling <rob.stradling@comodo.com>]
2042 *) Fix possible deadlock when decoding public keys.
2045 Changes between 0.9.8w and 0.9.8x [10 May 2012]
2047 *) Sanity check record length before skipping explicit IV in DTLS
2050 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
2051 fuzzing as a service testing platform.
2055 *) Initialise tkeylen properly when encrypting CMS messages.
2056 Thanks to Solar Designer of Openwall for reporting this issue.
2059 Changes between 0.9.8v and 0.9.8w [23 Apr 2012]
2061 *) The fix for CVE-2012-2110 did not take into account that the
2062 'len' argument to BUF_MEM_grow and BUF_MEM_grow_clean is an
2063 int in OpenSSL 0.9.8, making it still vulnerable. Fix by
2064 rejecting negative len parameter. (CVE-2012-2131)
2065 [Tomas Hoger <thoger@redhat.com>]
2067 Changes between 0.9.8u and 0.9.8v [19 Apr 2012]
2069 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
2070 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
2071 in CRYPTO_realloc_clean.
2073 Thanks to Tavis Ormandy, Google Security Team, for discovering this
2074 issue and to Adam Langley <agl@chromium.org> for fixing it.
2076 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
2078 Changes between 0.9.8t and 0.9.8u [12 Mar 2012]
2080 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
2081 in CMS and PKCS7 code. When RSA decryption fails use a random key for
2082 content decryption and always return the same error. Note: this attack
2083 needs on average 2^20 messages so it only affects automated senders. The
2084 old behaviour can be reenabled in the CMS code by setting the
2085 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
2086 an MMA defence is not necessary.
2087 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
2088 this issue. (CVE-2012-0884)
2091 *) Fix CVE-2011-4619: make sure we really are receiving a
2092 client hello before rejecting multiple SGC restarts. Thanks to
2093 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
2096 Changes between 0.9.8s and 0.9.8t [18 Jan 2012]
2098 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
2099 Thanks to Antonio Martin, Enterprise Secure Access Research and
2100 Development, Cisco Systems, Inc. for discovering this bug and
2101 preparing a fix. (CVE-2012-0050)
2104 Changes between 0.9.8r and 0.9.8s [4 Jan 2012]
2106 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
2107 of the Vaudenay padding oracle attack on CBC mode encryption
2108 which enables an efficient plaintext recovery attack against
2109 the OpenSSL implementation of DTLS. Their attack exploits timing
2110 differences arising during decryption processing. A research
2111 paper describing this attack can be found at:
2112 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
2113 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
2114 Security Group at Royal Holloway, University of London
2115 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
2116 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
2117 for preparing the fix. (CVE-2011-4108)
2118 [Robin Seggelmann, Michael Tuexen]
2120 *) Stop policy check failure freeing same buffer twice. (CVE-2011-4109)
2121 [Ben Laurie, Kasper <ekasper@google.com>]
2123 *) Clear bytes used for block padding of SSL 3.0 records.
2125 [Adam Langley (Google)]
2127 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
2128 Kadianakis <desnacked@gmail.com> for discovering this issue and
2129 Adam Langley for preparing the fix. (CVE-2011-4619)
2130 [Adam Langley (Google)]
2132 *) Prevent malformed RFC3779 data triggering an assertion failure.
2133 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
2134 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
2135 [Rob Austein <sra@hactrn.net>]
2137 *) Fix ssl_ciph.c set-up race.
2138 [Adam Langley (Google)]
2140 *) Fix spurious failures in ecdsatest.c.
2141 [Emilia Käsper (Google)]
2143 *) Fix the BIO_f_buffer() implementation (which was mixing different
2144 interpretations of the '..._len' fields).
2145 [Adam Langley (Google)]
2147 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
2148 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
2149 threads won't reuse the same blinding coefficients.
2151 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
2152 lock to call BN_BLINDING_invert_ex, and avoids one use of
2153 BN_BLINDING_update for each BN_BLINDING structure (previously,
2154 the last update always remained unused).
2155 [Emilia Käsper (Google)]
2157 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
2158 for multi-threaded use of ECDH.
2159 [Adam Langley (Google)]
2161 *) Fix x509_name_ex_d2i memory leak on bad inputs.
2164 *) Add protection against ECDSA timing attacks as mentioned in the paper
2165 by Billy Bob Brumley and Nicola Tuveri, see:
2167 http://eprint.iacr.org/2011/232.pdf
2169 [Billy Bob Brumley and Nicola Tuveri]
2171 Changes between 0.9.8q and 0.9.8r [8 Feb 2011]
2173 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
2174 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
2176 *) Fix bug in string printing code: if *any* escaping is enabled we must
2177 escape the escape character (backslash) or the resulting string is
2181 Changes between 0.9.8p and 0.9.8q [2 Dec 2010]
2183 *) Disable code workaround for ancient and obsolete Netscape browsers
2184 and servers: an attacker can use it in a ciphersuite downgrade attack.
2185 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
2188 *) Fixed J-PAKE implementation error, originally discovered by
2189 Sebastien Martini, further info and confirmation from Stefan
2190 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
2193 Changes between 0.9.8o and 0.9.8p [16 Nov 2010]
2195 *) Fix extension code to avoid race conditions which can result in a buffer
2196 overrun vulnerability: resumed sessions must not be modified as they can
2197 be shared by multiple threads. CVE-2010-3864
2200 *) Fix for double free bug in ssl/s3_clnt.c CVE-2010-2939
2203 *) Don't reencode certificate when calculating signature: cache and use
2204 the original encoding instead. This makes signature verification of
2205 some broken encodings work correctly.
2208 *) ec2_GF2m_simple_mul bugfix: compute correct result if the output EC_POINT
2209 is also one of the inputs.
2210 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
2212 *) Don't repeatedly append PBE algorithms to table if they already exist.
2213 Sort table on each new add. This effectively makes the table read only
2214 after all algorithms are added and subsequent calls to PKCS12_pbe_add
2218 Changes between 0.9.8n and 0.9.8o [01 Jun 2010]
2220 [NB: OpenSSL 0.9.8o and later 0.9.8 patch levels were released after
2223 *) Correct a typo in the CMS ASN1 module which can result in invalid memory
2224 access or freeing data twice (CVE-2010-0742)
2225 [Steve Henson, Ronald Moesbergen <intercommit@gmail.com>]
2227 *) Add SHA2 algorithms to SSL_library_init(). SHA2 is becoming far more
2228 common in certificates and some applications which only call
2229 SSL_library_init and not OpenSSL_add_all_algorithms() will fail.
2233 Reduce copying into .apps and .test in makevms.com
2234 Don't try to use blank CA certificate in CA.com
2235 Allow use of C files from original directories in maketests.com
2236 [Steven M. Schweda" <sms@antinode.info>]
2238 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
2240 *) When rejecting SSL/TLS records due to an incorrect version number, never
2241 update s->server with a new major version number. As of
2242 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
2243 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
2244 the previous behavior could result in a read attempt at NULL when
2245 receiving specific incorrect SSL/TLS records once record payload
2246 protection is active. (CVE-2010-0740)
2247 [Bodo Moeller, Adam Langley <agl@chromium.org>]
2249 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
2250 could be crashed if the relevant tables were not present (e.g. chrooted).
2251 [Tomas Hoger <thoger@redhat.com>]
2253 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
2255 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
2256 [Martin Olsson, Neel Mehta]
2258 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
2259 accommodate for stack sorting, always a write lock!).
2262 *) On some versions of WIN32 Heap32Next is very slow. This can cause
2263 excessive delays in the RAND_poll(): over a minute. As a workaround
2264 include a time check in the inner Heap32Next loop too.
2267 *) The code that handled flushing of data in SSL/TLS originally used the
2268 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
2269 the problem outlined in PR#1949. The fix suggested there however can
2270 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
2271 of Apache). So instead simplify the code to flush unconditionally.
2272 This should be fine since flushing with no data to flush is a no op.
2275 *) Handle TLS versions 2.0 and later properly and correctly use the
2276 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
2277 off ancient servers have a habit of sticking around for a while...
2280 *) Modify compression code so it frees up structures without using the
2281 ex_data callbacks. This works around a problem where some applications
2282 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
2283 restarting) then use compression (e.g. SSL with compression) later.
2284 This results in significant per-connection memory leaks and
2285 has caused some security issues including CVE-2008-1678 and
2289 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
2290 change when encrypting or decrypting.
2293 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
2294 connect and renegotiate with servers which do not support RI.
2295 Until RI is more widely deployed this option is enabled by default.
2298 *) Add "missing" ssl ctrls to clear options and mode.
2301 *) If client attempts to renegotiate and doesn't support RI respond with
2302 a no_renegotiation alert as required by RFC5746. Some renegotiating
2303 TLS clients will continue a connection gracefully when they receive
2304 the alert. Unfortunately OpenSSL mishandled this alert and would hang
2305 waiting for a server hello which it will never receive. Now we treat a
2306 received no_renegotiation alert as a fatal error. This is because
2307 applications requesting a renegotiation might well expect it to succeed
2308 and would have no code in place to handle the server denying it so the
2309 only safe thing to do is to terminate the connection.
2312 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
2313 peer supports secure renegotiation and 0 otherwise. Print out peer
2314 renegotiation support in s_client/s_server.
2317 *) Replace the highly broken and deprecated SPKAC certification method with
2318 the updated NID creation version. This should correctly handle UTF8.
2321 *) Implement RFC5746. Re-enable renegotiation but require the extension
2322 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
2323 turns out to be a bad idea. It has been replaced by
2324 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
2325 SSL_CTX_set_options(). This is really not recommended unless you
2326 know what you are doing.
2327 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
2329 *) Fixes to stateless session resumption handling. Use initial_ctx when
2330 issuing and attempting to decrypt tickets in case it has changed during
2331 servername handling. Use a non-zero length session ID when attempting
2332 stateless session resumption: this makes it possible to determine if
2333 a resumption has occurred immediately after receiving server hello
2334 (several places in OpenSSL subtly assume this) instead of later in
2338 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
2339 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
2340 fixes for a few places where the return code is not checked
2342 [Julia Lawall <julia@diku.dk>]
2344 *) Add --strict-warnings option to Configure script to include devteam
2345 warnings in other configurations.
2348 *) Add support for --libdir option and LIBDIR variable in makefiles. This
2349 makes it possible to install openssl libraries in locations which
2350 have names other than "lib", for example "/usr/lib64" which some
2352 [Steve Henson, based on patch from Jeremy Utley]
2354 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
2355 X690 8.9.12 and can produce some misleading textual output of OIDs.
2356 [Steve Henson, reported by Dan Kaminsky]
2358 *) Delete MD2 from algorithm tables. This follows the recommendation in
2359 several standards that it is not used in new applications due to
2360 several cryptographic weaknesses. For binary compatibility reasons
2361 the MD2 API is still compiled in by default.
2364 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
2368 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
2369 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
2371 [Guenter <lists@gknw.net>]
2373 *) Fix the server certificate chain building code to use X509_verify_cert(),
2374 it used to have an ad-hoc builder which was unable to cope with anything
2375 other than a simple chain.
2376 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
2378 *) Don't check self signed certificate signatures in X509_verify_cert()
2379 by default (a flag can override this): it just wastes time without
2380 adding any security. As a useful side effect self signed root CAs
2381 with non-FIPS digests are now usable in FIPS mode.
2384 *) In dtls1_process_out_of_seq_message() the check if the current message
2385 is already buffered was missing. For every new message was memory
2386 allocated, allowing an attacker to perform an denial of service attack
2387 with sending out of seq handshake messages until there is no memory
2388 left. Additionally every future messege was buffered, even if the
2389 sequence number made no sense and would be part of another handshake.
2390 So only messages with sequence numbers less than 10 in advance will be
2391 buffered. (CVE-2009-1378)
2392 [Robin Seggelmann, discovered by Daniel Mentz]
2394 *) Records are buffered if they arrive with a future epoch to be
2395 processed after finishing the corresponding handshake. There is
2396 currently no limitation to this buffer allowing an attacker to perform
2397 a DOS attack with sending records with future epochs until there is no
2398 memory left. This patch adds the pqueue_size() function to detemine
2399 the size of a buffer and limits the record buffer to 100 entries.
2401 [Robin Seggelmann, discovered by Daniel Mentz]
2403 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
2404 parent structure is freed. (CVE-2009-1379)
2407 *) Handle non-blocking I/O properly in SSL_shutdown() call.
2408 [Darryl Miles <darryl-mailinglists@netbauds.net>]
2411 [Ilya O. <vrghost@gmail.com>]
2413 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
2415 *) Disable renegotiation completely - this fixes a severe security
2416 problem (CVE-2009-3555) at the cost of breaking all
2417 renegotiation. Renegotiation can be re-enabled by setting
2418 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
2419 run-time. This is really not recommended unless you know what
2423 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
2425 *) Don't set val to NULL when freeing up structures, it is freed up by
2426 underlying code. If sizeof(void *) > sizeof(long) this can result in
2427 zeroing past the valid field. (CVE-2009-0789)
2428 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
2430 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
2431 checked correctly. This would allow some invalid signed attributes to
2432 appear to verify correctly. (CVE-2009-0591)
2433 [Ivan Nestlerode <inestlerode@us.ibm.com>]
2435 *) Reject UniversalString and BMPString types with invalid lengths. This
2436 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
2437 a legal length. (CVE-2009-0590)
2440 *) Set S/MIME signing as the default purpose rather than setting it
2441 unconditionally. This allows applications to override it at the store
2445 *) Permit restricted recursion of ASN1 strings. This is needed in practice
2446 to handle some structures.
2449 *) Improve efficiency of mem_gets: don't search whole buffer each time
2451 [Jeremy Shapiro <jnshapir@us.ibm.com>]
2453 *) New -hex option for openssl rand.
2456 *) Print out UTF8String and NumericString when parsing ASN1.
2459 *) Support NumericString type for name components.
2462 *) Allow CC in the environment to override the automatically chosen
2463 compiler. Note that nothing is done to ensure flags work with the
2467 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
2469 *) Properly check EVP_VerifyFinal() and similar return values
2471 [Ben Laurie, Bodo Moeller, Google Security Team]
2473 *) Enable TLS extensions by default.
2476 *) Allow the CHIL engine to be loaded, whether the application is
2477 multithreaded or not. (This does not release the developer from the
2478 obligation to set up the dynamic locking callbacks.)
2479 [Sander Temme <sander@temme.net>]
2481 *) Use correct exit code if there is an error in dgst command.
2482 [Steve Henson; problem pointed out by Roland Dirlewanger]
2484 *) Tweak Configure so that you need to say "experimental-jpake" to enable
2485 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
2488 *) Add experimental JPAKE support, including demo authentication in
2489 s_client and s_server.
2492 *) Set the comparison function in v3_addr_canonize().
2493 [Rob Austein <sra@hactrn.net>]
2495 *) Add support for XMPP STARTTLS in s_client.
2496 [Philip Paeps <philip@freebsd.org>]
2498 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
2499 to ensure that even with this option, only ciphersuites in the
2500 server's preference list will be accepted. (Note that the option
2501 applies only when resuming a session, so the earlier behavior was
2502 just about the algorithm choice for symmetric cryptography.)
2505 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
2507 *) Fix NULL pointer dereference if a DTLS server received
2508 ChangeCipherSpec as first record (CVE-2009-1386).
2511 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
2512 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
2515 *) The fix in 0.9.8c that supposedly got rid of unsafe
2516 double-checked locking was incomplete for RSA blinding,
2517 addressing just one layer of what turns out to have been
2518 doubly unsafe triple-checked locking.
2520 So now fix this for real by retiring the MONT_HELPER macro
2521 in crypto/rsa/rsa_eay.c.
2523 [Bodo Moeller; problem pointed out by Marius Schilder]
2525 *) Various precautionary measures:
2527 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
2529 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
2530 (NB: This would require knowledge of the secret session ticket key
2531 to exploit, in which case you'd be SOL either way.)
2533 - Change bn_nist.c so that it will properly handle input BIGNUMs
2534 outside the expected range.
2536 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
2539 [Neel Mehta, Bodo Moeller]
2541 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
2542 the load fails. Useful for distros.
2543 [Ben Laurie and the FreeBSD team]
2545 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
2548 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
2551 *) Expand ENGINE to support engine supplied SSL client certificate functions.
2553 This work was sponsored by Logica.
2556 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
2557 keystores. Support for SSL/TLS client authentication too.
2558 Not compiled unless enable-capieng specified to Configure.
2560 This work was sponsored by Logica.
2563 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
2564 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
2565 attribute creation routines such as certifcate requests and PKCS#12
2569 Changes between 0.9.8g and 0.9.8h [28 May 2008]
2571 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
2572 handshake which could lead to a cilent crash as found using the
2573 Codenomicon TLS test suite (CVE-2008-1672)
2574 [Steve Henson, Mark Cox]
2576 *) Fix double free in TLS server name extensions which could lead to
2577 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
2580 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
2582 Clear the error queue to ensure that error entries left from
2583 older function calls do not interfere with the correct operation.
2584 [Lutz Jaenicke, Erik de Castro Lopo]
2586 *) Remove root CA certificates of commercial CAs:
2588 The OpenSSL project does not recommend any specific CA and does not
2589 have any policy with respect to including or excluding any CA.
2590 Therefore it does not make any sense to ship an arbitrary selection
2591 of root CA certificates with the OpenSSL software.
2594 *) RSA OAEP patches to fix two separate invalid memory reads.
2595 The first one involves inputs when 'lzero' is greater than
2596 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
2597 before the beginning of from). The second one involves inputs where
2598 the 'db' section contains nothing but zeroes (there is a one-byte
2599 invalid read after the end of 'db').
2600 [Ivan Nestlerode <inestlerode@us.ibm.com>]
2602 *) Partial backport from 0.9.9-dev:
2604 Introduce bn_mul_mont (dedicated Montgomery multiplication
2605 procedure) as a candidate for BIGNUM assembler implementation.
2606 While 0.9.9-dev uses assembler for various architectures, only
2607 x86_64 is available by default here in the 0.9.8 branch, and
2608 32-bit x86 is available through a compile-time setting.
2610 To try the 32-bit x86 assembler implementation, use Configure
2611 option "enable-montasm" (which exists only for this backport).
2613 As "enable-montasm" for 32-bit x86 disclaims code stability
2614 anyway, in this constellation we activate additional code
2615 backported from 0.9.9-dev for further performance improvements,
2616 namely BN_from_montgomery_word. (To enable this otherwise,
2617 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
2619 [Andy Polyakov (backport partially by Bodo Moeller)]
2621 *) Add TLS session ticket callback. This allows an application to set
2622 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
2623 values. This is useful for key rollover for example where several key
2624 sets may exist with different names.
2627 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
2628 This was broken until now in 0.9.8 releases, such that the only way
2629 a registered ENGINE could be used (assuming it initialises
2630 successfully on the host) was to explicitly set it as the default
2631 for the relevant algorithms. This is in contradiction with 0.9.7
2632 behaviour and the documentation. With this fix, when an ENGINE is
2633 registered into a given algorithm's table of implementations, the
2634 'uptodate' flag is reset so that auto-discovery will be used next
2635 time a new context for that algorithm attempts to select an
2637 [Ian Lister (tweaked by Geoff Thorpe)]
2639 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
2640 implemention in the following ways:
2642 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
2645 Lack of BER streaming support means one pass streaming processing is
2646 only supported if data is detached: setting the streaming flag is
2647 ignored for embedded content.
2649 CMS support is disabled by default and must be explicitly enabled
2650 with the enable-cms configuration option.
2653 *) Update the GMP engine glue to do direct copies between BIGNUM and
2654 mpz_t when openssl and GMP use the same limb size. Otherwise the
2655 existing "conversion via a text string export" trick is still used.
2656 [Paul Sheer <paulsheer@gmail.com>]
2658 *) Zlib compression BIO. This is a filter BIO which compressed and
2659 uncompresses any data passed through it.
2662 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
2663 RFC3394 compatible AES key wrapping.
2666 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
2667 sets string data without copying. X509_ALGOR_set0() and
2668 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
2669 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
2670 from an X509_ATTRIBUTE structure optionally checking it occurs only
2671 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
2675 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
2676 to get the expected BN_FLG_CONSTTIME behavior.
2677 [Bodo Moeller (Google)]
2681 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
2682 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
2683 - added some more tests to do_tests.pl
2684 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
2685 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
2686 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
2687 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
2688 - various changes to netware.pl to enable gcc-cross builds on Win32
2690 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
2691 - various changes to fix missing prototype warnings
2692 - fixed x86nasm.pl to create correct asm files for NASM COFF output
2693 - added AES, WHIRLPOOL and CPUID assembler code to build files
2694 - added missing AES assembler make rules to mk1mf.pl
2695 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
2696 [Guenter Knauf <eflash@gmx.net>]
2698 *) Implement certificate status request TLS extension defined in RFC3546.
2699 A client can set the appropriate parameters and receive the encoded
2700 OCSP response via a callback. A server can query the supplied parameters
2701 and set the encoded OCSP response in the callback. Add simplified examples
2702 to s_client and s_server.
2705 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
2707 *) Fix various bugs:
2708 + Binary incompatibility of ssl_ctx_st structure
2709 + DTLS interoperation with non-compliant servers
2710 + Don't call get_session_cb() without proposed session
2711 + Fix ia64 assembler code
2712 [Andy Polyakov, Steve Henson]
2714 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
2716 *) DTLS Handshake overhaul. There were longstanding issues with
2717 OpenSSL DTLS implementation, which were making it impossible for
2718 RFC 4347 compliant client to communicate with OpenSSL server.
2719 Unfortunately just fixing these incompatibilities would "cut off"
2720 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
2721 server keeps tolerating non RFC compliant syntax. The opposite is
2722 not true, 0.9.8f client can not communicate with earlier server.
2723 This update even addresses CVE-2007-4995.
2726 *) Changes to avoid need for function casts in OpenSSL: some compilers
2727 (gcc 4.2 and later) reject their use.
2728 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
2731 *) Add RFC4507 support to OpenSSL. This includes the corrections in
2732 RFC4507bis. The encrypted ticket format is an encrypted encoded
2733 SSL_SESSION structure, that way new session features are automatically
2736 If a client application caches session in an SSL_SESSION structure
2737 support is transparent because tickets are now stored in the encoded
2740 The SSL_CTX structure automatically generates keys for ticket
2741 protection in servers so again support should be possible
2742 with no application modification.
2744 If a client or server wishes to disable RFC4507 support then the option
2745 SSL_OP_NO_TICKET can be set.
2747 Add a TLS extension debugging callback to allow the contents of any client
2748 or server extensions to be examined.
2750 This work was sponsored by Google.
2753 *) Add initial support for TLS extensions, specifically for the server_name
2754 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
2755 have new members for a host name. The SSL data structure has an
2756 additional member SSL_CTX *initial_ctx so that new sessions can be
2757 stored in that context to allow for session resumption, even after the
2758 SSL has been switched to a new SSL_CTX in reaction to a client's
2759 server_name extension.
2761 New functions (subject to change):
2763 SSL_get_servername()
2764 SSL_get_servername_type()
2767 New CTRL codes and macros (subject to change):
2769 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
2770 - SSL_CTX_set_tlsext_servername_callback()
2771 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
2772 - SSL_CTX_set_tlsext_servername_arg()
2773 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
2775 openssl s_client has a new '-servername ...' option.
2777 openssl s_server has new options '-servername_host ...', '-cert2 ...',
2778 '-key2 ...', '-servername_fatal' (subject to change). This allows
2779 testing the HostName extension for a specific single host name ('-cert'
2780 and '-key' remain fallbacks for handshakes without HostName
2781 negotiation). If the unrecogninzed_name alert has to be sent, this by
2782 default is a warning; it becomes fatal with the '-servername_fatal'
2785 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
2787 *) Add AES and SSE2 assembly language support to VC++ build.
2790 *) Mitigate attack on final subtraction in Montgomery reduction.
2793 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
2794 (which previously caused an internal error).
2797 *) Squeeze another 10% out of IGE mode when in != out.
2800 *) AES IGE mode speedup.
2801 [Dean Gaudet (Google)]
2803 *) Add the Korean symmetric 128-bit cipher SEED (see
2804 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
2805 add SEED ciphersuites from RFC 4162:
2807 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
2808 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
2809 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
2810 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
2812 To minimize changes between patchlevels in the OpenSSL 0.9.8
2813 series, SEED remains excluded from compilation unless OpenSSL
2814 is configured with 'enable-seed'.
2815 [KISA, Bodo Moeller]
2817 *) Mitigate branch prediction attacks, which can be practical if a
2818 single processor is shared, allowing a spy process to extract
2819 information. For detailed background information, see
2820 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
2821 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
2822 and Necessary Software Countermeasures"). The core of the change
2823 are new versions BN_div_no_branch() and
2824 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
2825 respectively, which are slower, but avoid the security-relevant
2826 conditional branches. These are automatically called by BN_div()
2827 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
2828 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
2829 remove a conditional branch.
2831 BN_FLG_CONSTTIME is the new name for the previous
2832 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
2833 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
2834 in the exponent causes BN_mod_exp_mont() to use the alternative
2835 implementation in BN_mod_exp_mont_consttime().) The old name
2836 remains as a deprecated alias.
2838 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
2839 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
2840 constant-time implementations for more than just exponentiation.
2841 Here too the old name is kept as a deprecated alias.
2843 BN_BLINDING_new() will now use BN_dup() for the modulus so that
2844 the BN_BLINDING structure gets an independent copy of the
2845 modulus. This means that the previous "BIGNUM *m" argument to
2846 BN_BLINDING_new() and to BN_BLINDING_create_param() now
2847 essentially becomes "const BIGNUM *m", although we can't actually
2848 change this in the header file before 0.9.9. It allows
2849 RSA_setup_blinding() to use BN_with_flags() on the modulus to
2850 enable BN_FLG_CONSTTIME.
2852 [Matthew D Wood (Intel Corp)]
2854 *) In the SSL/TLS server implementation, be strict about session ID
2855 context matching (which matters if an application uses a single
2856 external cache for different purposes). Previously,
2857 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
2858 set. This did ensure strict client verification, but meant that,
2859 with applications using a single external cache for quite
2860 different requirements, clients could circumvent ciphersuite
2861 restrictions for a given session ID context by starting a session
2862 in a different context.
2865 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2866 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2867 authentication-only ciphersuites.
2870 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
2871 not complete and could lead to a possible single byte overflow
2872 (CVE-2007-5135) [Ben Laurie]
2874 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
2876 *) Since AES128 and AES256 (and similarly Camellia128 and
2877 Camellia256) share a single mask bit in the logic of
2878 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2879 kludge to work properly if AES128 is available and AES256 isn't
2880 (or if Camellia128 is available and Camellia256 isn't).
2883 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
2884 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
2885 When a point or a seed is encoded in a BIT STRING, we need to
2886 prevent the removal of trailing zero bits to get the proper DER
2887 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
2888 of a NamedBitList, for which trailing 0 bits need to be removed.)
2891 *) Have SSL/TLS server implementation tolerate "mismatched" record
2892 protocol version while receiving ClientHello even if the
2893 ClientHello is fragmented. (The server can't insist on the
2894 particular protocol version it has chosen before the ServerHello
2895 message has informed the client about his choice.)
2898 *) Add RFC 3779 support.
2899 [Rob Austein for ARIN, Ben Laurie]
2901 *) Load error codes if they are not already present instead of using a
2902 static variable. This allows them to be cleanly unloaded and reloaded.
2903 Improve header file function name parsing.
2906 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
2907 or CAPABILITY handshake as required by RFCs.
2910 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
2912 *) Introduce limits to prevent malicious keys being able to
2913 cause a denial of service. (CVE-2006-2940)
2914 [Steve Henson, Bodo Moeller]
2916 *) Fix ASN.1 parsing of certain invalid structures that can result
2917 in a denial of service. (CVE-2006-2937) [Steve Henson]
2919 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2920 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2922 *) Fix SSL client code which could crash if connecting to a
2923 malicious SSLv2 server. (CVE-2006-4343)
2924 [Tavis Ormandy and Will Drewry, Google Security Team]
2926 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
2927 match only those. Before that, "AES256-SHA" would be interpreted
2928 as a pattern and match "AES128-SHA" too (since AES128-SHA got
2929 the same strength classification in 0.9.7h) as we currently only
2930 have a single AES bit in the ciphersuite description bitmap.
2931 That change, however, also applied to ciphersuite strings such as
2932 "RC4-MD5" that intentionally matched multiple ciphersuites --
2933 namely, SSL 2.0 ciphersuites in addition to the more common ones
2934 from SSL 3.0/TLS 1.0.
2936 So we change the selection algorithm again: Naming an explicit
2937 ciphersuite selects this one ciphersuite, and any other similar
2938 ciphersuite (same bitmap) from *other* protocol versions.
2939 Thus, "RC4-MD5" again will properly select both the SSL 2.0
2940 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
2942 Since SSL 2.0 does not have any ciphersuites for which the
2943 128/256 bit distinction would be relevant, this works for now.
2944 The proper fix will be to use different bits for AES128 and
2945 AES256, which would have avoided the problems from the beginning;
2946 however, bits are scarce, so we can only do this in a new release
2947 (not just a patchlevel) when we can change the SSL_CIPHER
2948 definition to split the single 'unsigned long mask' bitmap into
2949 multiple values to extend the available space.
2953 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
2955 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2956 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2958 *) Add AES IGE and biIGE modes.
2961 *) Change the Unix randomness entropy gathering to use poll() when
2962 possible instead of select(), since the latter has some
2963 undesirable limitations.
2964 [Darryl Miles via Richard Levitte and Bodo Moeller]
2966 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
2967 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
2968 cannot be implicitly activated as part of, e.g., the "AES" alias.
2969 However, please upgrade to OpenSSL 0.9.9[-dev] for
2970 non-experimental use of the ECC ciphersuites to get TLS extension
2971 support, which is required for curve and point format negotiation
2972 to avoid potential handshake problems.
2975 *) Disable rogue ciphersuites:
2977 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2978 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2979 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2981 The latter two were purportedly from
2982 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2985 Also deactivate the remaining ciphersuites from
2986 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2987 unofficial, and the ID has long expired.
2990 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2991 dual-core machines) and other potential thread-safety issues.
2994 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
2995 versions), which is now available for royalty-free use
2996 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
2997 Also, add Camellia TLS ciphersuites from RFC 4132.
2999 To minimize changes between patchlevels in the OpenSSL 0.9.8
3000 series, Camellia remains excluded from compilation unless OpenSSL
3001 is configured with 'enable-camellia'.
3004 *) Disable the padding bug check when compression is in use. The padding
3005 bug check assumes the first packet is of even length, this is not
3006 necessarily true if compresssion is enabled and can result in false
3007 positives causing handshake failure. The actual bug test is ancient
3008 code so it is hoped that implementations will either have fixed it by
3009 now or any which still have the bug do not support compression.
3012 Changes between 0.9.8a and 0.9.8b [04 May 2006]
3014 *) When applying a cipher rule check to see if string match is an explicit
3015 cipher suite and only match that one cipher suite if it is.
3018 *) Link in manifests for VC++ if needed.
3019 [Austin Ziegler <halostatue@gmail.com>]
3021 *) Update support for ECC-based TLS ciphersuites according to
3022 draft-ietf-tls-ecc-12.txt with proposed changes (but without
3023 TLS extensions, which are supported starting with the 0.9.9
3024 branch, not in the OpenSSL 0.9.8 branch).
3027 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
3028 opaque EVP_CIPHER_CTX handling.
3031 *) Fixes and enhancements to zlib compression code. We now only use
3032 "zlib1.dll" and use the default __cdecl calling convention on Win32
3033 to conform with the standards mentioned here:
3034 http://www.zlib.net/DLL_FAQ.txt
3035 Static zlib linking now works on Windows and the new --with-zlib-include
3036 --with-zlib-lib options to Configure can be used to supply the location
3037 of the headers and library. Gracefully handle case where zlib library
3041 *) Several fixes and enhancements to the OID generation code. The old code
3042 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
3043 handle numbers larger than ULONG_MAX, truncated printing and had a
3044 non standard OBJ_obj2txt() behaviour.
3047 *) Add support for building of engines under engine/ as shared libraries
3048 under VC++ build system.
3051 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
3052 Hopefully, we will not see any false combination of paths any more.
3055 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
3057 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
3058 (part of SSL_OP_ALL). This option used to disable the
3059 countermeasure against man-in-the-middle protocol-version
3060 rollback in the SSL 2.0 server implementation, which is a bad
3061 idea. (CVE-2005-2969)
3063 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
3064 for Information Security, National Institute of Advanced Industrial
3065 Science and Technology [AIST], Japan)]
3067 *) Add two function to clear and return the verify parameter flags.
3070 *) Keep cipherlists sorted in the source instead of sorting them at
3071 runtime, thus removing the need for a lock.
3074 *) Avoid some small subgroup attacks in Diffie-Hellman.
3075 [Nick Mathewson and Ben Laurie]
3077 *) Add functions for well-known primes.
3080 *) Extended Windows CE support.
3081 [Satoshi Nakamura and Andy Polyakov]
3083 *) Initialize SSL_METHOD structures at compile time instead of during
3084 runtime, thus removing the need for a lock.
3087 *) Make PKCS7_decrypt() work even if no certificate is supplied by
3088 attempting to decrypt each encrypted key in turn. Add support to
3092 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
3094 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
3097 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
3100 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
3101 key into the same file any more.
3104 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
3107 *) Add -utf8 command line and config file option to 'ca'.
3108 [Stefan <stf@udoma.org]
3110 *) Removed the macro des_crypt(), as it seems to conflict with some
3111 libraries. Use DES_crypt().
3114 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
3115 involves renaming the source and generated shared-libs for
3116 both. The engines will accept the corrected or legacy ids
3117 ('ncipher' and '4758_cca' respectively) when binding. NB,
3118 this only applies when building 'shared'.
3119 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
3121 *) Add attribute functions to EVP_PKEY structure. Modify
3122 PKCS12_create() to recognize a CSP name attribute and
3123 use it. Make -CSP option work again in pkcs12 utility.
3126 *) Add new functionality to the bn blinding code:
3127 - automatic re-creation of the BN_BLINDING parameters after
3128 a fixed number of uses (currently 32)
3129 - add new function for parameter creation
3130 - introduce flags to control the update behaviour of the
3131 BN_BLINDING parameters
3132 - hide BN_BLINDING structure
3133 Add a second BN_BLINDING slot to the RSA structure to improve
3134 performance when a single RSA object is shared among several
3138 *) Add support for DTLS.
3139 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
3141 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
3142 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
3145 *) Remove buggy and incompletet DH cert support from
3146 ssl/ssl_rsa.c and ssl/s3_both.c
3149 *) Use SHA-1 instead of MD5 as the default digest algorithm for
3150 the apps/openssl applications.
3153 *) Compile clean with "-Wall -Wmissing-prototypes
3154 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
3155 DEBUG_SAFESTACK must also be set.
3158 *) Change ./Configure so that certain algorithms can be disabled by default.
3159 The new counterpiece to "no-xxx" is "enable-xxx".
3161 The patented RC5 and MDC2 algorithms will now be disabled unless
3162 "enable-rc5" and "enable-mdc2", respectively, are specified.
3164 (IDEA remains enabled despite being patented. This is because IDEA
3165 is frequently required for interoperability, and there is no license
3166 fee for non-commercial use. As before, "no-idea" can be used to
3167 avoid this algorithm.)
3171 *) Add processing of proxy certificates (see RFC 3820). This work was
3172 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
3173 EGEE (Enabling Grids for E-science in Europe).
3176 *) RC4 performance overhaul on modern architectures/implementations, such
3177 as Intel P4, IA-64 and AMD64.
3180 *) New utility extract-section.pl. This can be used specify an alternative
3181 section number in a pod file instead of having to treat each file as
3182 a separate case in Makefile. This can be done by adding two lines to the
3185 =for comment openssl_section:XXX
3187 The blank line is mandatory.
3191 *) New arguments -certform, -keyform and -pass for s_client and s_server
3192 to allow alternative format key and certificate files and passphrase
3196 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
3197 update associated structures and add various utility functions.
3199 Add new policy related verify parameters, include policy checking in
3200 standard verify code. Enhance 'smime' application with extra parameters
3201 to support policy checking and print out.
3204 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
3205 Nehemiah processors. These extensions support AES encryption in hardware
3206 as well as RNG (though RNG support is currently disabled).
3207 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
3209 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
3212 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
3213 [Andy Polyakov and a number of other people]
3215 *) Improved PowerPC platform support. Most notably BIGNUM assembler
3216 implementation contributed by IBM.
3217 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
3219 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
3220 exponent rather than 'unsigned long'. There is a corresponding change to
3221 the new 'rsa_keygen' element of the RSA_METHOD structure.
3222 [Jelte Jansen, Geoff Thorpe]
3224 *) Functionality for creating the initial serial number file is now
3225 moved from CA.pl to the 'ca' utility with a new option -create_serial.
3227 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
3228 number file to 1, which is bound to cause problems. To avoid
3229 the problems while respecting compatibility between different 0.9.7
3230 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
3231 CA.pl for serial number initialization. With the new release 0.9.8,
3232 we can fix the problem directly in the 'ca' utility.)
3235 *) Reduced header interdepencies by declaring more opaque objects in
3236 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
3237 give fewer recursive includes, which could break lazy source code - so
3238 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
3239 developers should define this symbol when building and using openssl to
3240 ensure they track the recommended behaviour, interfaces, [etc], but
3241 backwards-compatible behaviour prevails when this isn't defined.
3244 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
3247 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
3248 This will generate a random key of the appropriate length based on the
3249 cipher context. The EVP_CIPHER can provide its own random key generation
3250 routine to support keys of a specific form. This is used in the des and
3251 3des routines to generate a key of the correct parity. Update S/MIME
3252 code to use new functions and hence generate correct parity DES keys.
3253 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
3254 valid (weak or incorrect parity).
3257 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
3258 as looking them up. This is useful when the verified structure may contain
3259 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
3260 present unless the new PKCS7_NO_CRL flag is asserted.
3263 *) Extend ASN1 oid configuration module. It now additionally accepts the
3266 shortName = some long name, 1.2.3.4
3269 *) Reimplemented the BN_CTX implementation. There is now no more static
3270 limitation on the number of variables it can handle nor the depth of the
3271 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
3272 information can now expand as required, and rather than having a single
3273 static array of bignums, BN_CTX now uses a linked-list of such arrays
3274 allowing it to expand on demand whilst maintaining the usefulness of
3275 BN_CTX's "bundling".
3278 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
3279 to allow all RSA operations to function using a single BN_CTX.
3282 *) Preliminary support for certificate policy evaluation and checking. This
3283 is initially intended to pass the tests outlined in "Conformance Testing
3284 of Relying Party Client Certificate Path Processing Logic" v1.07.
3287 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
3288 remained unused and not that useful. A variety of other little bignum
3289 tweaks and fixes have also been made continuing on from the audit (see
3293 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
3294 associated ASN1, EVP and SSL functions and old ASN1 macros.
3297 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
3298 and this should never fail. So the return value from the use of
3299 BN_set_word() (which can fail due to needless expansion) is now deprecated;
3300 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
3303 *) BN_CTX_get() should return zero-valued bignums, providing the same
3304 initialised value as BN_new().
3305 [Geoff Thorpe, suggested by Ulf Möller]
3307 *) Support for inhibitAnyPolicy certificate extension.
3310 *) An audit of the BIGNUM code is underway, for which debugging code is
3311 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
3312 is considered valid when processing BIGNUMs, and causes execution to
3313 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
3314 further steps are taken to deliberately pollute unused data in BIGNUM
3315 structures to try and expose faulty code further on. For now, openssl will
3316 (in its default mode of operation) continue to tolerate the inconsistent
3317 forms that it has tolerated in the past, but authors and packagers should
3318 consider trying openssl and their own applications when compiled with
3319 these debugging symbols defined. It will help highlight potential bugs in
3320 their own code, and will improve the test coverage for OpenSSL itself. At
3321 some point, these tighter rules will become openssl's default to improve
3322 maintainability, though the assert()s and other overheads will remain only
3323 in debugging configurations. See bn.h for more details.
3324 [Geoff Thorpe, Nils Larsch, Ulf Möller]
3326 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
3327 that can only be obtained through BN_CTX_new() (which implicitly
3328 initialises it). The presence of this function only made it possible
3329 to overwrite an existing structure (and cause memory leaks).
3332 *) Because of the callback-based approach for implementing LHASH as a
3333 template type, lh_insert() adds opaque objects to hash-tables and
3334 lh_doall() or lh_doall_arg() are typically used with a destructor callback
3335 to clean up those corresponding objects before destroying the hash table
3336 (and losing the object pointers). So some over-zealous constifications in
3337 LHASH have been relaxed so that lh_insert() does not take (nor store) the
3338 objects as "const" and the lh_doall[_arg] callback wrappers are not
3339 prototyped to have "const" restrictions on the object pointers they are
3340 given (and so aren't required to cast them away any more).
3343 *) The tmdiff.h API was so ugly and minimal that our own timing utility
3344 (speed) prefers to use its own implementation. The two implementations
3345 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
3346 its object type properly exposed (MS_TM) instead of casting to/from "char
3347 *". This may still change yet if someone realises MS_TM and "ms_time_***"
3348 aren't necessarily the greatest nomenclatures - but this is what was used
3349 internally to the implementation so I've used that for now.
3352 *) Ensure that deprecated functions do not get compiled when
3353 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
3354 the self-tests were still using deprecated key-generation functions so
3355 these have been updated also.
3358 *) Reorganise PKCS#7 code to separate the digest location functionality
3359 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
3360 New function PKCS7_set_digest() to set the digest type for PKCS#7
3361 digestedData type. Add additional code to correctly generate the
3362 digestedData type and add support for this type in PKCS7 initialization
3366 *) New function PKCS7_set0_type_other() this initializes a PKCS7
3367 structure of type "other".
3370 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
3371 sure the loop does correctly stop and breaking ("division by zero")
3372 modulus operations are not performed. The (pre-generated) prime
3373 table crypto/bn/bn_prime.h was already correct, but it could not be
3374 re-generated on some platforms because of the "division by zero"
3375 situation in the script.
3376 [Ralf S. Engelschall]
3378 *) Update support for ECC-based TLS ciphersuites according to
3379 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
3380 SHA-1 now is only used for "small" curves (where the
3381 representation of a field element takes up to 24 bytes); for
3382 larger curves, the field element resulting from ECDH is directly
3383 used as premaster secret.
3384 [Douglas Stebila (Sun Microsystems Laboratories)]
3386 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
3387 curve secp160r1 to the tests.
3388 [Douglas Stebila (Sun Microsystems Laboratories)]
3390 *) Add the possibility to load symbols globally with DSO.
3391 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
3393 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
3394 control of the error stack.
3397 *) Add support for STORE in ENGINE.
3400 *) Add the STORE type. The intention is to provide a common interface
3401 to certificate and key stores, be they simple file-based stores, or
3402 HSM-type store, or LDAP stores, or...
3403 NOTE: The code is currently UNTESTED and isn't really used anywhere.
3406 *) Add a generic structure called OPENSSL_ITEM. This can be used to
3407 pass a list of arguments to any function as well as provide a way
3408 for a function to pass data back to the caller.
3411 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
3412 works like BUF_strdup() but can be used to duplicate a portion of
3413 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
3417 *) Add the function sk_find_ex() which works like sk_find(), but will
3418 return an index to an element even if an exact match couldn't be
3419 found. The index is guaranteed to point at the element where the
3420 searched-for key would be inserted to preserve sorting order.
3423 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
3424 takes an extra flags argument for optional functionality. Currently,
3425 the following flags are defined:
3427 OBJ_BSEARCH_VALUE_ON_NOMATCH
3428 This one gets OBJ_bsearch_ex() to return a pointer to the first
3429 element where the comparing function returns a negative or zero
3432 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
3433 This one gets OBJ_bsearch_ex() to return a pointer to the first
3434 element where the comparing function returns zero. This is useful
3435 if there are more than one element where the comparing function
3439 *) Make it possible to create self-signed certificates with 'openssl ca'
3440 in such a way that the self-signed certificate becomes part of the
3441 CA database and uses the same mechanisms for serial number generation
3442 as all other certificate signing. The new flag '-selfsign' enables
3443 this functionality. Adapt CA.sh and CA.pl.in.
3446 *) Add functionality to check the public key of a certificate request
3447 against a given private. This is useful to check that a certificate
3448 request can be signed by that key (self-signing).
3451 *) Make it possible to have multiple active certificates with the same
3452 subject in the CA index file. This is done only if the keyword
3453 'unique_subject' is set to 'no' in the main CA section (default
3454 if 'CA_default') of the configuration file. The value is saved
3455 with the database itself in a separate index attribute file,
3456 named like the index file with '.attr' appended to the name.
3459 *) Generate muti valued AVAs using '+' notation in config files for
3463 *) Support for nameConstraints certificate extension.
3466 *) Support for policyConstraints certificate extension.
3469 *) Support for policyMappings certificate extension.
3472 *) Make sure the default DSA_METHOD implementation only uses its
3473 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
3474 and change its own handlers to be NULL so as to remove unnecessary
3475 indirection. This lets alternative implementations fallback to the
3476 default implementation more easily.
3479 *) Support for directoryName in GeneralName related extensions
3483 *) Make it possible to link applications using Makefile.shared.
3484 Make that possible even when linking against static libraries!
3487 *) Support for single pass processing for S/MIME signing. This now
3488 means that S/MIME signing can be done from a pipe, in addition
3489 cleartext signing (multipart/signed type) is effectively streaming
3490 and the signed data does not need to be all held in memory.
3492 This is done with a new flag PKCS7_STREAM. When this flag is set
3493 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
3494 is done after the data is output (and digests calculated) in
3495 SMIME_write_PKCS7().
3498 *) Add full support for -rpath/-R, both in shared libraries and
3499 applications, at least on the platforms where it's known how
3503 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
3504 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
3505 will now compute a table of multiples of the generator that
3506 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
3507 faster (notably in the case of a single point multiplication,
3508 scalar * generator).
3509 [Nils Larsch, Bodo Moeller]
3511 *) IPv6 support for certificate extensions. The various extensions
3512 which use the IP:a.b.c.d can now take IPv6 addresses using the
3513 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
3517 *) Added an ENGINE that implements RSA by performing private key
3518 exponentiations with the GMP library. The conversions to and from
3519 GMP's mpz_t format aren't optimised nor are any montgomery forms
3520 cached, and on x86 it appears OpenSSL's own performance has caught up.
3521 However there are likely to be other architectures where GMP could
3522 provide a boost. This ENGINE is not built in by default, but it can be
3523 specified at Configure time and should be accompanied by the necessary
3524 linker additions, eg;
3525 ./config -DOPENSSL_USE_GMP -lgmp
3528 *) "openssl engine" will not display ENGINE/DSO load failure errors when
3529 testing availability of engines with "-t" - the old behaviour is
3530 produced by increasing the feature's verbosity with "-tt".
3533 *) ECDSA routines: under certain error conditions uninitialized BN objects
3534 could be freed. Solution: make sure initialization is performed early
3535 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
3539 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
3540 and DH_METHOD (eg. by ENGINE implementations) to override the normal
3541 software implementations. For DSA and DH, parameter generation can
3542 also be overriden by providing the appropriate method callbacks.
3545 *) Change the "progress" mechanism used in key-generation and
3546 primality testing to functions that take a new BN_GENCB pointer in
3547 place of callback/argument pairs. The new API functions have "_ex"
3548 postfixes and the older functions are reimplemented as wrappers for
3549 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
3550 declarations of the old functions to help (graceful) attempts to
3551 migrate to the new functions. Also, the new key-generation API
3552 functions operate on a caller-supplied key-structure and return
3553 success/failure rather than returning a key or NULL - this is to
3554 help make "keygen" another member function of RSA_METHOD etc.
3556 Example for using the new callback interface:
3558 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
3562 BN_GENCB_set(&my_cb, my_callback, my_arg);
3564 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
3565 /* For the meaning of a, b in calls to my_callback(), see the
3566 * documentation of the function that calls the callback.
3567 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
3568 * my_callback should return 1 if it wants BN_is_prime_ex()
3569 * to continue, or 0 to stop.
3574 *) Change the ZLIB compression method to be stateful, and make it
3575 available to TLS with the number defined in
3576 draft-ietf-tls-compression-04.txt.
3579 *) Add the ASN.1 structures and functions for CertificatePair, which
3580 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
3582 CertificatePair ::= SEQUENCE {
3583 forward [0] Certificate OPTIONAL,
3584 reverse [1] Certificate OPTIONAL,
3585 -- at least one of the pair shall be present -- }
3587 Also implement the PEM functions to read and write certificate
3588 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
3590 This needed to be defined, mostly for the sake of the LDAP
3591 attribute crossCertificatePair, but may prove useful elsewhere as
3595 *) Make it possible to inhibit symlinking of shared libraries in
3596 Makefile.shared, for Cygwin's sake.
3599 *) Extend the BIGNUM API by creating a function
3600 void BN_set_negative(BIGNUM *a, int neg);
3601 and a macro that behave like
3602 int BN_is_negative(const BIGNUM *a);
3604 to avoid the need to access 'a->neg' directly in applications.
3607 *) Implement fast modular reduction for pseudo-Mersenne primes
3608 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
3609 EC_GROUP_new_curve_GFp() will now automatically use this
3611 [Nils Larsch <nla@trustcenter.de>]
3613 *) Add new lock type (CRYPTO_LOCK_BN).
3616 *) Change the ENGINE framework to automatically load engines
3617 dynamically from specific directories unless they could be
3618 found to already be built in or loaded. Move all the
3619 current engines except for the cryptodev one to a new
3621 The engines in engines/ are built as shared libraries if
3622 the "shared" options was given to ./Configure or ./config.
3623 Otherwise, they are inserted in libcrypto.a.
3624 /usr/local/ssl/engines is the default directory for dynamic
3625 engines, but that can be overriden at configure time through
3626 the usual use of --prefix and/or --openssldir, and at run
3627 time with the environment variable OPENSSL_ENGINES.
3628 [Geoff Thorpe and Richard Levitte]
3630 *) Add Makefile.shared, a helper makefile to build shared
3631 libraries. Addapt Makefile.org.
3634 *) Add version info to Win32 DLLs.
3635 [Peter 'Luna' Runestig" <peter@runestig.com>]
3637 *) Add new 'medium level' PKCS#12 API. Certificates and keys
3638 can be added using this API to created arbitrary PKCS#12
3639 files while avoiding the low level API.
3641 New options to PKCS12_create(), key or cert can be NULL and
3642 will then be omitted from the output file. The encryption
3643 algorithm NIDs can be set to -1 for no encryption, the mac
3644 iteration count can be set to 0 to omit the mac.
3646 Enhance pkcs12 utility by making the -nokeys and -nocerts
3647 options work when creating a PKCS#12 file. New option -nomac
3648 to omit the mac, NONE can be set for an encryption algorithm.
3649 New code is modified to use the enhanced PKCS12_create()
3650 instead of the low level API.
3653 *) Extend ASN1 encoder to support indefinite length constructed
3654 encoding. This can output sequences tags and octet strings in
3655 this form. Modify pk7_asn1.c to support indefinite length
3656 encoding. This is experimental and needs additional code to
3657 be useful, such as an ASN1 bio and some enhanced streaming
3660 Extend template encode functionality so that tagging is passed
3661 down to the template encoder.
3664 *) Let 'openssl req' fail if an argument to '-newkey' is not
3665 recognized instead of using RSA as a default.
3668 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
3669 As these are not official, they are not included in "ALL";
3670 the "ECCdraft" ciphersuite group alias can be used to select them.
3671 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
3673 *) Add ECDH engine support.
3674 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
3676 *) Add ECDH in new directory crypto/ecdh/.
3677 [Douglas Stebila (Sun Microsystems Laboratories)]
3679 *) Let BN_rand_range() abort with an error after 100 iterations
3680 without success (which indicates a broken PRNG).
3683 *) Change BN_mod_sqrt() so that it verifies that the input value
3684 is really the square of the return value. (Previously,
3685 BN_mod_sqrt would show GIGO behaviour.)
3688 *) Add named elliptic curves over binary fields from X9.62, SECG,
3689 and WAP/WTLS; add OIDs that were still missing.
3691 [Sheueling Chang Shantz and Douglas Stebila
3692 (Sun Microsystems Laboratories)]
3694 *) Extend the EC library for elliptic curves over binary fields
3695 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
3698 EC_GF2m_simple_method
3702 EC_GROUP_new_curve_GF2m
3703 EC_GROUP_set_curve_GF2m
3704 EC_GROUP_get_curve_GF2m
3705 EC_POINT_set_affine_coordinates_GF2m
3706 EC_POINT_get_affine_coordinates_GF2m
3707 EC_POINT_set_compressed_coordinates_GF2m
3709 Point compression for binary fields is disabled by default for
3710 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
3713 As binary polynomials are represented as BIGNUMs, various members
3714 of the EC_GROUP and EC_POINT data structures can be shared
3715 between the implementations for prime fields and binary fields;
3716 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
3717 are essentially identical to their ..._GFp counterparts.
3718 (For simplicity, the '..._GFp' prefix has been dropped from
3719 various internal method names.)
3721 An internal 'field_div' method (similar to 'field_mul' and
3722 'field_sqr') has been added; this is used only for binary fields.
3724 [Sheueling Chang Shantz and Douglas Stebila
3725 (Sun Microsystems Laboratories)]
3727 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
3728 through methods ('mul', 'precompute_mult').
3730 The generic implementations (now internally called 'ec_wNAF_mul'
3731 and 'ec_wNAF_precomputed_mult') remain the default if these
3732 methods are undefined.
3734 [Sheueling Chang Shantz and Douglas Stebila
3735 (Sun Microsystems Laboratories)]
3737 *) New function EC_GROUP_get_degree, which is defined through
3738 EC_METHOD. For curves over prime fields, this returns the bit
3739 length of the modulus.
3741 [Sheueling Chang Shantz and Douglas Stebila
3742 (Sun Microsystems Laboratories)]
3744 *) New functions EC_GROUP_dup, EC_POINT_dup.
3745 (These simply call ..._new and ..._copy).
3747 [Sheueling Chang Shantz and Douglas Stebila
3748 (Sun Microsystems Laboratories)]
3750 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
3751 Polynomials are represented as BIGNUMs (where the sign bit is not
3752 used) in the following functions [macros]:
3755 BN_GF2m_sub [= BN_GF2m_add]
3756 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
3757 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
3758 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
3760 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
3761 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
3762 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
3763 BN_GF2m_cmp [= BN_ucmp]
3765 (Note that only the 'mod' functions are actually for fields GF(2^m).
3766 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
3768 For some functions, an the irreducible polynomial defining a
3769 field can be given as an 'unsigned int[]' with strictly
3770 decreasing elements giving the indices of those bits that are set;
3771 i.e., p[] represents the polynomial
3772 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
3774 p[0] > p[1] > ... > p[k] = 0.
3775 This applies to the following functions:
3780 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
3781 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
3783 BN_GF2m_mod_sqrt_arr
3784 BN_GF2m_mod_solve_quad_arr
3788 Conversion can be performed by the following functions:
3793 bntest.c has additional tests for binary polynomial arithmetic.
3795 Two implementations for BN_GF2m_mod_div() are available.
3796 The default algorithm simply uses BN_GF2m_mod_inv() and
3797 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
3798 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
3799 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
3801 [Sheueling Chang Shantz and Douglas Stebila
3802 (Sun Microsystems Laboratories)]
3804 *) Add new error code 'ERR_R_DISABLED' that can be used when some
3805 functionality is disabled at compile-time.
3806 [Douglas Stebila <douglas.stebila@sun.com>]
3808 *) Change default behaviour of 'openssl asn1parse' so that more
3809 information is visible when viewing, e.g., a certificate:
3811 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
3812 mode the content of non-printable OCTET STRINGs is output in a
3813 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
3814 avoid the appearance of a printable string.
3815 [Nils Larsch <nla@trustcenter.de>]
3817 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
3819 EC_GROUP_set_asn1_flag()
3820 EC_GROUP_get_asn1_flag()
3821 EC_GROUP_set_point_conversion_form()
3822 EC_GROUP_get_point_conversion_form()
3823 These control ASN1 encoding details:
3824 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
3825 has been set to OPENSSL_EC_NAMED_CURVE.
3826 - Points are encoded in uncompressed form by default; options for
3827 asn1_for are as for point2oct, namely
3828 POINT_CONVERSION_COMPRESSED
3829 POINT_CONVERSION_UNCOMPRESSED
3830 POINT_CONVERSION_HYBRID
3832 Also add 'seed' and 'seed_len' members to EC_GROUP with access
3835 EC_GROUP_get0_seed()
3836 EC_GROUP_get_seed_len()
3837 This is used only for ASN1 purposes (so far).
3838 [Nils Larsch <nla@trustcenter.de>]
3840 *) Add 'field_type' member to EC_METHOD, which holds the NID
3841 of the appropriate field type OID. The new function
3842 EC_METHOD_get_field_type() returns this value.
3843 [Nils Larsch <nla@trustcenter.de>]
3848 EC_POINT_point2hex()
3849 EC_POINT_hex2point()
3850 providing useful interfaces to EC_POINT_point2oct() and
3851 EC_POINT_oct2point().
3852 [Nils Larsch <nla@trustcenter.de>]
3854 *) Change internals of the EC library so that the functions
3855 EC_GROUP_set_generator()
3856 EC_GROUP_get_generator()
3857 EC_GROUP_get_order()
3858 EC_GROUP_get_cofactor()
3859 are implemented directly in crypto/ec/ec_lib.c and not dispatched
3860 to methods, which would lead to unnecessary code duplication when
3861 adding different types of curves.
3862 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
3864 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
3865 arithmetic, and such that modified wNAFs are generated
3866 (which avoid length expansion in many cases).
3869 *) Add a function EC_GROUP_check_discriminant() (defined via
3870 EC_METHOD) that verifies that the curve discriminant is non-zero.
3872 Add a function EC_GROUP_check() that makes some sanity tests
3873 on a EC_GROUP, its generator and order. This includes
3874 EC_GROUP_check_discriminant().
3875 [Nils Larsch <nla@trustcenter.de>]
3877 *) Add ECDSA in new directory crypto/ecdsa/.
3879 Add applications 'openssl ecparam' and 'openssl ecdsa'
3880 (these are based on 'openssl dsaparam' and 'openssl dsa').
3882 ECDSA support is also included in various other files across the
3883 library. Most notably,
3884 - 'openssl req' now has a '-newkey ecdsa:file' option;
3885 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
3886 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
3887 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
3888 them suitable for ECDSA where domain parameters must be
3889 extracted before the specific public key;
3890 - ECDSA engine support has been added.
3891 [Nils Larsch <nla@trustcenter.de>]
3893 *) Include some named elliptic curves, and add OIDs from X9.62,
3894 SECG, and WAP/WTLS. Each curve can be obtained from the new
3896 EC_GROUP_new_by_curve_name(),
3897 and the list of available named curves can be obtained with
3898 EC_get_builtin_curves().
3899 Also add a 'curve_name' member to EC_GROUP objects, which can be
3901 EC_GROUP_set_curve_name()
3902 EC_GROUP_get_curve_name()
3903 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
3905 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
3906 was actually never needed) and in BN_mul(). The removal in BN_mul()
3907 required a small change in bn_mul_part_recursive() and the addition
3908 of the functions bn_cmp_part_words(), bn_sub_part_words() and
3909 bn_add_part_words(), which do the same thing as bn_cmp_words(),
3910 bn_sub_words() and bn_add_words() except they take arrays with
3914 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
3916 *) Cleanse PEM buffers before freeing them since they may contain
3918 [Benjamin Bennett <ben@psc.edu>]
3920 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
3921 a ciphersuite string such as "DEFAULT:RSA" cannot enable
3922 authentication-only ciphersuites.
3925 *) Since AES128 and AES256 share a single mask bit in the logic of
3926 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
3927 kludge to work properly if AES128 is available and AES256 isn't.
3930 *) Expand security boundary to match 1.1.1 module.
3933 *) Remove redundant features: hash file source, editing of test vectors
3934 modify fipsld to use external fips_premain.c signature.
3937 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
3938 run algorithm test programs.
3941 *) Make algorithm test programs more tolerant of whitespace.
3944 *) Have SSL/TLS server implementation tolerate "mismatched" record
3945 protocol version while receiving ClientHello even if the
3946 ClientHello is fragmented. (The server can't insist on the
3947 particular protocol version it has chosen before the ServerHello
3948 message has informed the client about his choice.)
3951 *) Load error codes if they are not already present instead of using a
3952 static variable. This allows them to be cleanly unloaded and reloaded.
3955 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
3957 *) Introduce limits to prevent malicious keys being able to
3958 cause a denial of service. (CVE-2006-2940)
3959 [Steve Henson, Bodo Moeller]
3961 *) Fix ASN.1 parsing of certain invalid structures that can result
3962 in a denial of service. (CVE-2006-2937) [Steve Henson]
3964 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
3965 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
3967 *) Fix SSL client code which could crash if connecting to a
3968 malicious SSLv2 server. (CVE-2006-4343)
3969 [Tavis Ormandy and Will Drewry, Google Security Team]
3971 *) Change ciphersuite string processing so that an explicit
3972 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
3973 will no longer include "AES128-SHA"), and any other similar
3974 ciphersuite (same bitmap) from *other* protocol versions (so that
3975 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
3976 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
3977 changes from 0.9.8b and 0.9.8d.
3980 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
3982 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
3983 (CVE-2006-4339) [Ben Laurie and Google Security Team]
3985 *) Change the Unix randomness entropy gathering to use poll() when
3986 possible instead of select(), since the latter has some
3987 undesirable limitations.
3988 [Darryl Miles via Richard Levitte and Bodo Moeller]
3990 *) Disable rogue ciphersuites:
3992 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
3993 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
3994 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
3996 The latter two were purportedly from
3997 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
4000 Also deactive the remaining ciphersuites from
4001 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
4002 unofficial, and the ID has long expired.
4005 *) Fix RSA blinding Heisenbug (problems sometimes occured on
4006 dual-core machines) and other potential thread-safety issues.
4009 Changes between 0.9.7i and 0.9.7j [04 May 2006]
4011 *) Adapt fipsld and the build system to link against the validated FIPS
4012 module in FIPS mode.
4015 *) Fixes for VC++ 2005 build under Windows.
4018 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
4019 from a Windows bash shell such as MSYS. It is autodetected from the
4020 "config" script when run from a VC++ environment. Modify standard VC++
4021 build to use fipscanister.o from the GNU make build.
4024 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
4026 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
4027 The value now differs depending on if you build for FIPS or not.
4028 BEWARE! A program linked with a shared FIPSed libcrypto can't be
4029 safely run with a non-FIPSed libcrypto, as it may crash because of
4030 the difference induced by this change.
4033 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
4035 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
4036 (part of SSL_OP_ALL). This option used to disable the
4037 countermeasure against man-in-the-middle protocol-version
4038 rollback in the SSL 2.0 server implementation, which is a bad
4039 idea. (CVE-2005-2969)
4041 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
4042 for Information Security, National Institute of Advanced Industrial
4043 Science and Technology [AIST], Japan)]
4045 *) Minimal support for X9.31 signatures and PSS padding modes. This is
4046 mainly for FIPS compliance and not fully integrated at this stage.
4049 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
4050 the exponentiation using a fixed-length exponent. (Otherwise,
4051 the information leaked through timing could expose the secret key
4052 after many signatures; cf. Bleichenbacher's attack on DSA with
4056 *) Make a new fixed-window mod_exp implementation the default for
4057 RSA, DSA, and DH private-key operations so that the sequence of
4058 squares and multiplies and the memory access pattern are
4059 independent of the particular secret key. This will mitigate
4060 cache-timing and potential related attacks.
4062 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
4063 and this is automatically used by BN_mod_exp_mont() if the new flag
4064 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
4065 will use this BN flag for private exponents unless the flag
4066 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
4067 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
4069 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
4071 *) Change the client implementation for SSLv23_method() and
4072 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
4073 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
4074 (Previously, the SSL 2.0 backwards compatible Client Hello
4075 message format would be used even with SSL_OP_NO_SSLv2.)
4078 *) Add support for smime-type MIME parameter in S/MIME messages which some
4082 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
4083 a threadsafe manner. Modify rsa code to use new function and add calls
4084 to dsa and dh code (which had race conditions before).
4087 *) Include the fixed error library code in the C error file definitions
4088 instead of fixing them up at runtime. This keeps the error code
4089 structures constant.
4092 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
4094 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
4097 *) Fixes for newer kerberos headers. NB: the casts are needed because
4098 the 'length' field is signed on one version and unsigned on another
4099 with no (?) obvious way to tell the difference, without these VC++
4100 complains. Also the "definition" of FAR (blank) is no longer included
4101 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
4102 some needed definitions.
4105 *) Undo Cygwin change.
4108 *) Added support for proxy certificates according to RFC 3820.
4109 Because they may be a security thread to unaware applications,
4110 they must be explicitely allowed in run-time. See
4111 docs/HOWTO/proxy_certificates.txt for further information.
4114 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
4116 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
4117 server and client random values. Previously
4118 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
4119 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
4121 This change has negligible security impact because:
4123 1. Server and client random values still have 24 bytes of pseudo random
4126 2. Server and client random values are sent in the clear in the initial
4129 3. The master secret is derived using the premaster secret (48 bytes in
4130 size for static RSA ciphersuites) as well as client server and random
4133 The OpenSSL team would like to thank the UK NISCC for bringing this issue
4136 [Stephen Henson, reported by UK NISCC]
4138 *) Use Windows randomness collection on Cygwin.
4141 *) Fix hang in EGD/PRNGD query when communication socket is closed
4142 prematurely by EGD/PRNGD.
4143 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
4145 *) Prompt for pass phrases when appropriate for PKCS12 input format.
4148 *) Back-port of selected performance improvements from development
4149 branch, as well as improved support for PowerPC platforms.
4152 *) Add lots of checks for memory allocation failure, error codes to indicate
4153 failure and freeing up memory if a failure occurs.
4154 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
4156 *) Add new -passin argument to dgst.
4159 *) Perform some character comparisons of different types in X509_NAME_cmp:
4160 this is needed for some certificates that reencode DNs into UTF8Strings
4161 (in violation of RFC3280) and can't or wont issue name rollover
4165 *) Make an explicit check during certificate validation to see that
4166 the CA setting in each certificate on the chain is correct. As a
4167 side effect always do the following basic checks on extensions,
4168 not just when there's an associated purpose to the check:
4170 - if there is an unhandled critical extension (unless the user
4171 has chosen to ignore this fault)
4172 - if the path length has been exceeded (if one is set at all)
4173 - that certain extensions fit the associated purpose (if one has
4177 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
4179 *) Avoid a race condition when CRLs are checked in a multi threaded
4180 environment. This would happen due to the reordering of the revoked
4181 entries during signature checking and serial number lookup. Now the
4182 encoding is cached and the serial number sort performed under a lock.
4183 Add new STACK function sk_is_sorted().
4186 *) Add Delta CRL to the extension code.
4189 *) Various fixes to s3_pkt.c so alerts are sent properly.
4190 [David Holmes <d.holmes@f5.com>]
4192 *) Reduce the chances of duplicate issuer name and serial numbers (in
4193 violation of RFC3280) using the OpenSSL certificate creation utilities.
4194 This is done by creating a random 64 bit value for the initial serial
4195 number when a serial number file is created or when a self signed
4196 certificate is created using 'openssl req -x509'. The initial serial
4197 number file is created using 'openssl x509 -next_serial' in CA.pl
4198 rather than being initialized to 1.
4201 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
4203 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
4204 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
4205 [Joe Orton, Steve Henson]
4207 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
4209 [Joe Orton, Steve Henson]
4211 *) Make it possible to have multiple active certificates with the same
4212 subject in the CA index file. This is done only if the keyword
4213 'unique_subject' is set to 'no' in the main CA section (default
4214 if 'CA_default') of the configuration file. The value is saved
4215 with the database itself in a separate index attribute file,
4216 named like the index file with '.attr' appended to the name.
4219 *) X509 verify fixes. Disable broken certificate workarounds when
4220 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
4221 keyUsage extension present. Don't accept CRLs with unhandled critical
4222 extensions: since verify currently doesn't process CRL extensions this
4223 rejects a CRL with *any* critical extensions. Add new verify error codes
4227 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
4228 A clarification of RFC2560 will require the use of OCTET STRINGs and
4229 some implementations cannot handle the current raw format. Since OpenSSL
4230 copies and compares OCSP nonces as opaque blobs without any attempt at
4231 parsing them this should not create any compatibility issues.
4234 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
4235 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
4236 this HMAC (and other) operations are several times slower than OpenSSL
4240 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
4241 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
4243 *) Use the correct content when signing type "other".
4246 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
4248 *) Fix various bugs revealed by running the NISCC test suite:
4250 Stop out of bounds reads in the ASN1 code when presented with
4251 invalid tags (CVE-2003-0543 and CVE-2003-0544).
4253 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
4255 If verify callback ignores invalid public key errors don't try to check
4256 certificate signature with the NULL public key.
4260 *) New -ignore_err option in ocsp application to stop the server
4261 exiting on the first error in a request.
4264 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
4265 if the server requested one: as stated in TLS 1.0 and SSL 3.0
4269 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
4270 extra data after the compression methods not only for TLS 1.0
4271 but also for SSL 3.0 (as required by the specification).
4272 [Bodo Moeller; problem pointed out by Matthias Loepfe]
4274 *) Change X509_certificate_type() to mark the key as exported/exportable
4275 when it's 512 *bits* long, not 512 bytes.
4278 *) Change AES_cbc_encrypt() so it outputs exact multiple of
4279 blocks during encryption.
4282 *) Various fixes to base64 BIO and non blocking I/O. On write
4283 flushes were not handled properly if the BIO retried. On read
4284 data was not being buffered properly and had various logic bugs.
4285 This also affects blocking I/O when the data being decoded is a
4289 *) Various S/MIME bugfixes and compatibility changes:
4290 output correct application/pkcs7 MIME type if
4291 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
4292 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
4293 of files as .eml work). Correctly handle very long lines in MIME
4297 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
4299 *) Countermeasure against the Klima-Pokorny-Rosa extension of
4300 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
4301 a protocol version number mismatch like a decryption error
4302 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
4305 *) Turn on RSA blinding by default in the default implementation
4306 to avoid a timing attack. Applications that don't want it can call
4307 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
4308 They would be ill-advised to do so in most cases.
4309 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
4311 *) Change RSA blinding code so that it works when the PRNG is not
4312 seeded (in this case, the secret RSA exponent is abused as
4313 an unpredictable seed -- if it is not unpredictable, there
4314 is no point in blinding anyway). Make RSA blinding thread-safe
4315 by remembering the creator's thread ID in rsa->blinding and
4316 having all other threads use local one-time blinding factors
4317 (this requires more computation than sharing rsa->blinding, but
4318 avoids excessive locking; and if an RSA object is not shared
4319 between threads, blinding will still be very fast).
4322 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
4323 ENGINE as defaults for all supported algorithms irrespective of
4324 the 'flags' parameter. 'flags' is now honoured, so applications
4325 should make sure they are passing it correctly.
4328 *) Target "mingw" now allows native Windows code to be generated in
4329 the Cygwin environment as well as with the MinGW compiler.
4332 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
4334 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
4335 via timing by performing a MAC computation even if incorrrect
4336 block cipher padding has been found. This is a countermeasure
4337 against active attacks where the attacker has to distinguish
4338 between bad padding and a MAC verification error. (CVE-2003-0078)
4340 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
4341 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
4342 Martin Vuagnoux (EPFL, Ilion)]
4344 *) Make the no-err option work as intended. The intention with no-err
4345 is not to have the whole error stack handling routines removed from
4346 libcrypto, it's only intended to remove all the function name and
4347 reason texts, thereby removing some of the footprint that may not
4348 be interesting if those errors aren't displayed anyway.
4350 NOTE: it's still possible for any application or module to have it's
4351 own set of error texts inserted. The routines are there, just not
4352 used by default when no-err is given.
4355 *) Add support for FreeBSD on IA64.
4356 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
4358 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
4359 Kerberos function mit_des_cbc_cksum(). Before this change,
4360 the value returned by DES_cbc_cksum() was like the one from
4361 mit_des_cbc_cksum(), except the bytes were swapped.
4362 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
4364 *) Allow an application to disable the automatic SSL chain building.
4365 Before this a rather primitive chain build was always performed in
4366 ssl3_output_cert_chain(): an application had no way to send the
4367 correct chain if the automatic operation produced an incorrect result.
4369 Now the chain builder is disabled if either:
4371 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
4373 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
4375 The reasoning behind this is that an application would not want the
4376 auto chain building to take place if extra chain certificates are
4377 present and it might also want a means of sending no additional
4378 certificates (for example the chain has two certificates and the
4382 *) Add the possibility to build without the ENGINE framework.
4383 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
4385 *) Under Win32 gmtime() can return NULL: check return value in
4386 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
4389 *) DSA routines: under certain error conditions uninitialized BN objects
4390 could be freed. Solution: make sure initialization is performed early
4391 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
4392 Nils Larsch <nla@trustcenter.de> via PR#459)
4395 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
4396 checked on reconnect on the client side, therefore session resumption
4397 could still fail with a "ssl session id is different" error. This
4398 behaviour is masked when SSL_OP_ALL is used due to
4399 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
4400 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
4401 followup to PR #377.
4404 *) IA-32 assembler support enhancements: unified ELF targets, support
4405 for SCO/Caldera platforms, fix for Cygwin shared build.
4408 *) Add support for FreeBSD on sparc64. As a consequence, support for
4409 FreeBSD on non-x86 processors is separate from x86 processors on
4410 the config script, much like the NetBSD support.
4411 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
4413 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
4415 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
4418 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
4419 code (06) was taken as the first octet of the session ID and the last
4420 octet was ignored consequently. As a result SSLv2 client side session
4421 caching could not have worked due to the session ID mismatch between
4423 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
4427 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
4428 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
4432 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
4433 seems that in spite of existing for more than a year, many application
4434 author have done nothing to provide the necessary callbacks, which
4435 means that this particular engine will not work properly anywhere.
4436 This is a very unfortunate situation which forces us, in the name
4437 of usability, to give the hw_ncipher.c a static lock, which is part
4439 NOTE: This is for the 0.9.7 series ONLY. This hack will never
4440 appear in 0.9.8 or later. We EXPECT application authors to have
4441 dealt properly with this when 0.9.8 is released (unless we actually
4442 make such changes in the libcrypto locking code that changes will
4443 have to be made anyway).
4446 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
4447 octets have been read, EOF or an error occurs. Without this change
4448 some truncated ASN1 structures will not produce an error.
4451 *) Disable Heimdal support, since it hasn't been fully implemented.
4452 Still give the possibility to force the use of Heimdal, but with
4453 warnings and a request that patches get sent to openssl-dev.
4456 *) Add the VC-CE target, introduce the WINCE sysname, and add
4457 INSTALL.WCE and appropriate conditionals to make it build.
4458 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
4460 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
4461 cygssl-x.y.z.dll, where x, y and z are the major, minor and
4462 edit numbers of the version.
4463 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
4465 *) Introduce safe string copy and catenation functions
4466 (BUF_strlcpy() and BUF_strlcat()).
4467 [Ben Laurie (CHATS) and Richard Levitte]
4469 *) Avoid using fixed-size buffers for one-line DNs.
4470 [Ben Laurie (CHATS)]
4472 *) Add BUF_MEM_grow_clean() to avoid information leakage when
4473 resizing buffers containing secrets, and use where appropriate.
4474 [Ben Laurie (CHATS)]
4476 *) Avoid using fixed size buffers for configuration file location.
4477 [Ben Laurie (CHATS)]
4479 *) Avoid filename truncation for various CA files.
4480 [Ben Laurie (CHATS)]
4482 *) Use sizeof in preference to magic numbers.
4483 [Ben Laurie (CHATS)]
4485 *) Avoid filename truncation in cert requests.
4486 [Ben Laurie (CHATS)]
4488 *) Add assertions to check for (supposedly impossible) buffer
4490 [Ben Laurie (CHATS)]
4492 *) Don't cache truncated DNS entries in the local cache (this could
4493 potentially lead to a spoofing attack).
4494 [Ben Laurie (CHATS)]
4496 *) Fix various buffers to be large enough for hex/decimal
4497 representations in a platform independent manner.
4498 [Ben Laurie (CHATS)]
4500 *) Add CRYPTO_realloc_clean() to avoid information leakage when
4501 resizing buffers containing secrets, and use where appropriate.
4502 [Ben Laurie (CHATS)]
4504 *) Add BIO_indent() to avoid much slightly worrying code to do
4506 [Ben Laurie (CHATS)]
4508 *) Convert sprintf()/BIO_puts() to BIO_printf().
4509 [Ben Laurie (CHATS)]
4511 *) buffer_gets() could terminate with the buffer only half
4513 [Ben Laurie (CHATS)]
4515 *) Add assertions to prevent user-supplied crypto functions from
4516 overflowing internal buffers by having large block sizes, etc.
4517 [Ben Laurie (CHATS)]
4519 *) New OPENSSL_assert() macro (similar to assert(), but enabled
4521 [Ben Laurie (CHATS)]
4523 *) Eliminate unused copy of key in RC4.
4524 [Ben Laurie (CHATS)]
4526 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
4527 [Ben Laurie (CHATS)]
4529 *) Fix off-by-one error in EGD path.
4530 [Ben Laurie (CHATS)]
4532 *) If RANDFILE path is too long, ignore instead of truncating.
4533 [Ben Laurie (CHATS)]
4535 *) Eliminate unused and incorrectly sized X.509 structure
4537 [Ben Laurie (CHATS)]
4539 *) Eliminate unused and dangerous function knumber().
4540 [Ben Laurie (CHATS)]
4542 *) Eliminate unused and dangerous structure, KSSL_ERR.
4543 [Ben Laurie (CHATS)]
4545 *) Protect against overlong session ID context length in an encoded
4546 session object. Since these are local, this does not appear to be
4548 [Ben Laurie (CHATS)]
4550 *) Change from security patch (see 0.9.6e below) that did not affect
4551 the 0.9.6 release series:
4553 Remote buffer overflow in SSL3 protocol - an attacker could
4554 supply an oversized master key in Kerberos-enabled versions.
4556 [Ben Laurie (CHATS)]
4558 *) Change the SSL kerb5 codes to match RFC 2712.
4561 *) Make -nameopt work fully for req and add -reqopt switch.
4562 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
4564 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
4565 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
4567 *) Make sure tests can be performed even if the corresponding algorithms
4568 have been removed entirely. This was also the last step to make
4569 OpenSSL compilable with DJGPP under all reasonable conditions.
4570 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
4572 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
4573 to allow version independent disabling of normally unselected ciphers,
4574 which may be activated as a side-effect of selecting a single cipher.
4576 (E.g., cipher list string "RSA" enables ciphersuites that are left
4577 out of "ALL" because they do not provide symmetric encryption.
4578 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
4579 [Lutz Jaenicke, Bodo Moeller]
4581 *) Add appropriate support for separate platform-dependent build
4582 directories. The recommended way to make a platform-dependent
4583 build directory is the following (tested on Linux), maybe with
4586 # Place yourself outside of the OpenSSL source tree. In
4587 # this example, the environment variable OPENSSL_SOURCE
4588 # is assumed to contain the absolute OpenSSL source directory.
4589 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
4590 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
4591 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
4592 mkdir -p `dirname $F`
4593 ln -s $OPENSSL_SOURCE/$F $F
4596 To be absolutely sure not to disturb the source tree, a "make clean"
4597 is a good thing. If it isn't successfull, don't worry about it,
4598 it probably means the source directory is very clean.
4601 *) Make sure any ENGINE control commands make local copies of string
4602 pointers passed to them whenever necessary. Otherwise it is possible
4603 the caller may have overwritten (or deallocated) the original string
4604 data when a later ENGINE operation tries to use the stored values.
4605 [Götz Babin-Ebell <babinebell@trustcenter.de>]
4607 *) Improve diagnostics in file reading and command-line digests.
4608 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
4610 *) Add AES modes CFB and OFB to the object database. Correct an
4611 error in AES-CFB decryption.
4614 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
4615 allows existing EVP_CIPHER_CTX structures to be reused after
4616 calling EVP_*Final(). This behaviour is used by encryption
4617 BIOs and some applications. This has the side effect that
4618 applications must explicitly clean up cipher contexts with
4619 EVP_CIPHER_CTX_cleanup() or they will leak memory.
4622 *) Check the values of dna and dnb in bn_mul_recursive before calling
4623 bn_mul_comba (a non zero value means the a or b arrays do not contain
4624 n2 elements) and fallback to bn_mul_normal if either is not zero.
4627 *) Fix escaping of non-ASCII characters when using the -subj option
4628 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
4631 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
4632 form for "surname", serialNumber has no short form.
4633 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
4634 therefore remove "mail" short name for "internet 7".
4635 The OID for unique identifiers in X509 certificates is
4636 x500UniqueIdentifier, not uniqueIdentifier.
4637 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
4640 *) Add an "init" command to the ENGINE config module and auto initialize
4641 ENGINEs. Without any "init" command the ENGINE will be initialized
4642 after all ctrl commands have been executed on it. If init=1 the
4643 ENGINE is initailized at that point (ctrls before that point are run
4644 on the uninitialized ENGINE and after on the initialized one). If
4645 init=0 then the ENGINE will not be iniatialized at all.
4648 *) Fix the 'app_verify_callback' interface so that the user-defined
4649 argument is actually passed to the callback: In the
4650 SSL_CTX_set_cert_verify_callback() prototype, the callback
4651 declaration has been changed from
4654 int (*cb)(X509_STORE_CTX *,void *);
4655 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
4656 i=s->ctx->app_verify_callback(&ctx)
4657 has been changed into
4658 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
4660 To update applications using SSL_CTX_set_cert_verify_callback(),
4661 a dummy argument can be added to their callback functions.
4662 [D. K. Smetters <smetters@parc.xerox.com>]
4664 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
4665 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
4667 *) Add and OPENSSL_LOAD_CONF define which will cause
4668 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
4669 This allows older applications to transparently support certain
4670 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
4671 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
4672 load the config file and OPENSSL_add_all_algorithms_conf() which will
4673 always load it have also been added.
4676 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
4677 Adjust NIDs and EVP layer.
4678 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
4680 *) Config modules support in openssl utility.
4682 Most commands now load modules from the config file,
4683 though in a few (such as version) this isn't done
4684 because it couldn't be used for anything.
4686 In the case of ca and req the config file used is
4687 the same as the utility itself: that is the -config
4688 command line option can be used to specify an
4692 *) Move default behaviour from OPENSSL_config(). If appname is NULL
4693 use "openssl_conf" if filename is NULL use default openssl config file.
4696 *) Add an argument to OPENSSL_config() to allow the use of an alternative
4697 config section name. Add a new flag to tolerate a missing config file
4698 and move code to CONF_modules_load_file().
4701 *) Support for crypto accelerator cards from Accelerated Encryption
4702 Processing, www.aep.ie. (Use engine 'aep')
4703 The support was copied from 0.9.6c [engine] and adapted/corrected
4704 to work with the new engine framework.
4705 [AEP Inc. and Richard Levitte]
4707 *) Support for SureWare crypto accelerator cards from Baltimore
4708 Technologies. (Use engine 'sureware')
4709 The support was copied from 0.9.6c [engine] and adapted
4710 to work with the new engine framework.
4713 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
4714 make the newer ENGINE framework commands for the CHIL engine work.
4715 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
4717 *) Make it possible to produce shared libraries on ReliantUNIX.
4718 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
4720 *) Add the configuration target debug-linux-ppro.
4721 Make 'openssl rsa' use the general key loading routines
4722 implemented in apps.c, and make those routines able to
4723 handle the key format FORMAT_NETSCAPE and the variant
4725 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
4727 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
4728 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
4730 *) Add -keyform to rsautl, and document -engine.
4731 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
4733 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
4734 BIO_R_NO_SUCH_FILE error code rather than the generic
4735 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
4738 *) Add new functions
4740 ERR_peek_last_error_line
4741 ERR_peek_last_error_line_data.
4742 These are similar to
4745 ERR_peek_error_line_data,
4746 but report on the latest error recorded rather than the first one
4747 still in the error queue.
4748 [Ben Laurie, Bodo Moeller]
4750 *) default_algorithms option in ENGINE config module. This allows things
4752 default_algorithms = ALL
4753 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
4756 *) Prelminary ENGINE config module.
4759 *) New experimental application configuration code.
4762 *) Change the AES code to follow the same name structure as all other
4763 symmetric ciphers, and behave the same way. Move everything to
4764 the directory crypto/aes, thereby obsoleting crypto/rijndael.
4765 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
4767 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
4768 [Ben Laurie and Theo de Raadt]
4770 *) Add option to output public keys in req command.
4771 [Massimiliano Pala madwolf@openca.org]
4773 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
4774 (up to about 10% better than before for P-192 and P-224).
4777 *) New functions/macros
4779 SSL_CTX_set_msg_callback(ctx, cb)
4780 SSL_CTX_set_msg_callback_arg(ctx, arg)
4781 SSL_set_msg_callback(ssl, cb)
4782 SSL_set_msg_callback_arg(ssl, arg)
4784 to request calling a callback function
4786 void cb(int write_p, int version, int content_type,
4787 const void *buf, size_t len, SSL *ssl, void *arg)
4789 whenever a protocol message has been completely received
4790 (write_p == 0) or sent (write_p == 1). Here 'version' is the
4791 protocol version according to which the SSL library interprets
4792 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
4793 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
4794 the content type as defined in the SSL 3.0/TLS 1.0 protocol
4795 specification (change_cipher_spec(20), alert(21), handshake(22)).
4796 'buf' and 'len' point to the actual message, 'ssl' to the
4797 SSL object, and 'arg' is the application-defined value set by
4798 SSL[_CTX]_set_msg_callback_arg().
4800 'openssl s_client' and 'openssl s_server' have new '-msg' options
4801 to enable a callback that displays all protocol messages.
4804 *) Change the shared library support so shared libraries are built as
4805 soon as the corresponding static library is finished, and thereby get
4806 openssl and the test programs linked against the shared library.
4807 This still only happens when the keyword "shard" has been given to
4808 the configuration scripts.
4810 NOTE: shared library support is still an experimental thing, and
4811 backward binary compatibility is still not guaranteed.
4812 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
4814 *) Add support for Subject Information Access extension.
4815 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
4817 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
4818 additional bytes when new memory had to be allocated, not just
4819 when reusing an existing buffer.
4822 *) New command line and configuration option 'utf8' for the req command.
4823 This allows field values to be specified as UTF8 strings.
4826 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
4827 runs for the former and machine-readable output for the latter.
4830 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
4831 of the e-mail address in the DN (i.e., it will go into a certificate
4832 extension only). The new configuration file option 'email_in_dn = no'
4833 has the same effect.
4834 [Massimiliano Pala madwolf@openca.org]
4836 *) Change all functions with names starting with des_ to be starting
4837 with DES_ instead. Add wrappers that are compatible with libdes,
4838 but are named _ossl_old_des_*. Finally, add macros that map the
4839 des_* symbols to the corresponding _ossl_old_des_* if libdes
4840 compatibility is desired. If OpenSSL 0.9.6c compatibility is
4841 desired, the des_* symbols will be mapped to DES_*, with one
4844 Since we provide two compatibility mappings, the user needs to
4845 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
4846 compatibility is desired. The default (i.e., when that macro
4847 isn't defined) is OpenSSL 0.9.6c compatibility.
4849 There are also macros that enable and disable the support of old
4850 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
4851 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
4852 are defined, the default will apply: to support the old des routines.
4854 In either case, one must include openssl/des.h to get the correct
4855 definitions. Do not try to just include openssl/des_old.h, that
4858 NOTE: This is a major break of an old API into a new one. Software
4859 authors are encouraged to switch to the DES_ style functions. Some
4860 time in the future, des_old.h and the libdes compatibility functions
4861 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
4862 default), and then completely removed.
4865 *) Test for certificates which contain unsupported critical extensions.
4866 If such a certificate is found during a verify operation it is
4867 rejected by default: this behaviour can be overridden by either
4868 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
4869 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
4870 X509_supported_extension() has also been added which returns 1 if a
4871 particular extension is supported.
4874 *) Modify the behaviour of EVP cipher functions in similar way to digests
4875 to retain compatibility with existing code.
4878 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
4879 compatibility with existing code. In particular the 'ctx' parameter does
4880 not have to be to be initialized before the call to EVP_DigestInit() and
4881 it is tidied up after a call to EVP_DigestFinal(). New function
4882 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
4883 EVP_MD_CTX_copy() changed to not require the destination to be
4884 initialized valid and new function EVP_MD_CTX_copy_ex() added which
4885 requires the destination to be valid.
4887 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
4888 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
4891 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
4892 so that complete 'Handshake' protocol structures are kept in memory
4893 instead of overwriting 'msg_type' and 'length' with 'body' data.
4896 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
4897 [Massimo Santin via Richard Levitte]
4899 *) Major restructuring to the underlying ENGINE code. This includes
4900 reduction of linker bloat, separation of pure "ENGINE" manipulation
4901 (initialisation, etc) from functionality dealing with implementations
4902 of specific crypto iterfaces. This change also introduces integrated
4903 support for symmetric ciphers and digest implementations - so ENGINEs
4904 can now accelerate these by providing EVP_CIPHER and EVP_MD
4905 implementations of their own. This is detailed in crypto/engine/README
4906 as it couldn't be adequately described here. However, there are a few
4907 API changes worth noting - some RSA, DSA, DH, and RAND functions that
4908 were changed in the original introduction of ENGINE code have now
4909 reverted back - the hooking from this code to ENGINE is now a good
4910 deal more passive and at run-time, operations deal directly with
4911 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
4912 dereferencing through an ENGINE pointer any more. Also, the ENGINE
4913 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
4914 they were not being used by the framework as there is no concept of a
4915 BIGNUM_METHOD and they could not be generalised to the new
4916 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
4917 ENGINE_cpy() has been removed as it cannot be consistently defined in
4921 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
4924 *) Change mkdef.pl to sort symbols that get the same entry number,
4925 and make sure the automatically generated functions ERR_load_*
4926 become part of libeay.num as well.
4929 *) New function SSL_renegotiate_pending(). This returns true once
4930 renegotiation has been requested (either SSL_renegotiate() call
4931 or HelloRequest/ClientHello receveived from the peer) and becomes
4932 false once a handshake has been completed.
4933 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
4934 sends a HelloRequest, but does not ensure that a handshake takes
4935 place. SSL_renegotiate_pending() is useful for checking if the
4936 client has followed the request.)
4939 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
4940 By default, clients may request session resumption even during
4941 renegotiation (if session ID contexts permit); with this option,
4942 session resumption is possible only in the first handshake.
4944 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
4945 more bits available for options that should not be part of
4946 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
4949 *) Add some demos for certificate and certificate request creation.
4952 *) Make maximum certificate chain size accepted from the peer application
4953 settable (SSL*_get/set_max_cert_list()), as proposed by
4954 "Douglas E. Engert" <deengert@anl.gov>.
4957 *) Add support for shared libraries for Unixware-7
4958 (Boyd Lynn Gerber <gerberb@zenez.com>).
4961 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
4962 be done prior to destruction. Use this to unload error strings from
4963 ENGINEs that load their own error strings. NB: This adds two new API
4964 functions to "get" and "set" this destroy handler in an ENGINE.
4967 *) Alter all existing ENGINE implementations (except "openssl" and
4968 "openbsd") to dynamically instantiate their own error strings. This
4969 makes them more flexible to be built both as statically-linked ENGINEs
4970 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
4971 Also, add stub code to each that makes building them as self-contained
4972 shared-libraries easier (see README.ENGINE).
4975 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
4976 implementations into applications that are completely implemented in
4977 self-contained shared-libraries. The "dynamic" ENGINE exposes control
4978 commands that can be used to configure what shared-library to load and
4979 to control aspects of the way it is handled. Also, made an update to
4980 the README.ENGINE file that brings its information up-to-date and
4981 provides some information and instructions on the "dynamic" ENGINE
4982 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
4985 *) Make it possible to unload ranges of ERR strings with a new
4986 "ERR_unload_strings" function.
4989 *) Add a copy() function to EVP_MD.
4992 *) Make EVP_MD routines take a context pointer instead of just the
4993 md_data void pointer.
4996 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
4997 that the digest can only process a single chunk of data
4998 (typically because it is provided by a piece of
4999 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
5000 is only going to provide a single chunk of data, and hence the
5001 framework needn't accumulate the data for oneshot drivers.
5004 *) As with "ERR", make it possible to replace the underlying "ex_data"
5005 functions. This change also alters the storage and management of global
5006 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
5007 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
5008 index counters. The API functions that use this state have been changed
5009 to take a "class_index" rather than pointers to the class's local STACK
5010 and counter, and there is now an API function to dynamically create new
5011 classes. This centralisation allows us to (a) plug a lot of the
5012 thread-safety problems that existed, and (b) makes it possible to clean
5013 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
5014 such data would previously have always leaked in application code and
5015 workarounds were in place to make the memory debugging turn a blind eye
5016 to it. Application code that doesn't use this new function will still
5017 leak as before, but their memory debugging output will announce it now
5018 rather than letting it slide.
5020 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
5021 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
5022 has a return value to indicate success or failure.
5025 *) Make it possible to replace the underlying "ERR" functions such that the
5026 global state (2 LHASH tables and 2 locks) is only used by the "default"
5027 implementation. This change also adds two functions to "get" and "set"
5028 the implementation prior to it being automatically set the first time
5029 any other ERR function takes place. Ie. an application can call "get",
5030 pass the return value to a module it has just loaded, and that module
5031 can call its own "set" function using that value. This means the
5032 module's "ERR" operations will use (and modify) the error state in the
5033 application and not in its own statically linked copy of OpenSSL code.
5036 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
5037 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
5038 the operation, and provides a more encapsulated way for external code
5039 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
5040 to use these functions rather than manually incrementing the counts.
5042 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
5045 *) Add EVP test program.
5048 *) Add symmetric cipher support to ENGINE. Expect the API to change!
5051 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
5052 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
5053 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
5054 These allow a CRL to be built without having to access X509_CRL fields
5055 directly. Modify 'ca' application to use new functions.
5058 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
5059 bug workarounds. Rollback attack detection is a security feature.
5060 The problem will only arise on OpenSSL servers when TLSv1 is not
5061 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
5062 Software authors not wanting to support TLSv1 will have special reasons
5063 for their choice and can explicitly enable this option.
5064 [Bodo Moeller, Lutz Jaenicke]
5066 *) Rationalise EVP so it can be extended: don't include a union of
5067 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
5068 (similar to those existing for EVP_CIPHER_CTX).
5073 EVP_MD_CTX_init(&md); /* new function call */
5074 EVP_DigestInit(&md, EVP_sha1());
5075 EVP_DigestUpdate(&md, in, len);
5076 EVP_DigestFinal(&md, out, NULL);
5077 EVP_MD_CTX_cleanup(&md); /* new function call */
5081 *) Make DES key schedule conform to the usual scheme, as well as
5082 correcting its structure. This means that calls to DES functions
5083 now have to pass a pointer to a des_key_schedule instead of a
5084 plain des_key_schedule (which was actually always a pointer
5087 des_key_schedule ks;
5089 des_set_key_checked(..., &ks);
5090 des_ncbc_encrypt(..., &ks, ...);
5092 (Note that a later change renames 'des_...' into 'DES_...'.)
5095 *) Initial reduction of linker bloat: the use of some functions, such as
5096 PEM causes large amounts of unused functions to be linked in due to
5097 poor organisation. For example pem_all.c contains every PEM function
5098 which has a knock on effect of linking in large amounts of (unused)
5099 ASN1 code. Grouping together similar functions and splitting unrelated
5100 functions prevents this.
5103 *) Cleanup of EVP macros.
5106 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
5107 correct _ecb suffix.
5110 *) Add initial OCSP responder support to ocsp application. The
5111 revocation information is handled using the text based index
5112 use by the ca application. The responder can either handle
5113 requests generated internally, supplied in files (for example
5114 via a CGI script) or using an internal minimal server.
5117 *) Add configuration choices to get zlib compression for TLS.
5120 *) Changes to Kerberos SSL for RFC 2712 compliance:
5121 1. Implemented real KerberosWrapper, instead of just using
5122 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
5123 2. Implemented optional authenticator field of KerberosWrapper.
5125 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
5126 and authenticator structs; see crypto/krb5/.
5128 Generalized Kerberos calls to support multiple Kerberos libraries.
5129 [Vern Staats <staatsvr@asc.hpc.mil>,
5130 Jeffrey Altman <jaltman@columbia.edu>
5131 via Richard Levitte]
5133 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
5134 already does with RSA. testdsa.h now has 'priv_key/pub_key'
5135 values for each of the key sizes rather than having just
5136 parameters (and 'speed' generating keys each time).
5139 *) Speed up EVP routines.
5142 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
5143 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
5144 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
5145 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
5147 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
5148 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
5149 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
5152 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
5154 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
5157 *) Added the OS2-EMX target.
5158 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
5160 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
5161 to support NCONF routines in extension code. New function CONF_set_nconf()
5162 to allow functions which take an NCONF to also handle the old LHASH
5163 structure: this means that the old CONF compatible routines can be
5164 retained (in particular wrt extensions) without having to duplicate the
5165 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
5168 *) Enhance the general user interface with mechanisms for inner control
5169 and with possibilities to have yes/no kind of prompts.
5172 *) Change all calls to low level digest routines in the library and
5173 applications to use EVP. Add missing calls to HMAC_cleanup() and
5174 don't assume HMAC_CTX can be copied using memcpy().
5175 [Verdon Walker <VWalker@novell.com>, Steve Henson]
5177 *) Add the possibility to control engines through control names but with
5178 arbitrary arguments instead of just a string.
5179 Change the key loaders to take a UI_METHOD instead of a callback
5180 function pointer. NOTE: this breaks binary compatibility with earlier
5181 versions of OpenSSL [engine].
5182 Adapt the nCipher code for these new conditions and add a card insertion
5186 *) Enhance the general user interface with mechanisms to better support
5187 dialog box interfaces, application-defined prompts, the possibility
5188 to use defaults (for example default passwords from somewhere else)
5189 and interrupts/cancellations.
5192 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
5193 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
5196 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
5197 tidy up some unnecessarily weird code in 'sk_new()').
5198 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
5200 *) Change the key loading routines for ENGINEs to use the same kind
5201 callback (pem_password_cb) as all other routines that need this
5205 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
5206 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
5207 than this minimum value is recommended.
5210 *) New random seeder for OpenVMS, using the system process statistics
5211 that are easily reachable.
5214 *) Windows apparently can't transparently handle global
5215 variables defined in DLLs. Initialisations such as:
5217 const ASN1_ITEM *it = &ASN1_INTEGER_it;
5219 wont compile. This is used by the any applications that need to
5220 declare their own ASN1 modules. This was fixed by adding the option
5221 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
5222 needed for static libraries under Win32.
5225 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
5226 setting of purpose and trust fields. New X509_STORE trust and
5227 purpose functions and tidy up setting in other SSL functions.
5230 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
5231 structure. These are inherited by X509_STORE_CTX when it is
5232 initialised. This allows various defaults to be set in the
5233 X509_STORE structure (such as flags for CRL checking and custom
5234 purpose or trust settings) for functions which only use X509_STORE_CTX
5235 internally such as S/MIME.
5237 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
5238 trust settings if they are not set in X509_STORE. This allows X509_STORE
5239 purposes and trust (in S/MIME for example) to override any set by default.
5241 Add command line options for CRL checking to smime, s_client and s_server
5245 *) Initial CRL based revocation checking. If the CRL checking flag(s)
5246 are set then the CRL is looked up in the X509_STORE structure and
5247 its validity and signature checked, then if the certificate is found
5248 in the CRL the verify fails with a revoked error.
5250 Various new CRL related callbacks added to X509_STORE_CTX structure.
5252 Command line options added to 'verify' application to support this.
5254 This needs some additional work, such as being able to handle multiple
5255 CRLs with different times, extension based lookup (rather than just
5256 by subject name) and ultimately more complete V2 CRL extension
5260 *) Add a general user interface API (crypto/ui/). This is designed
5261 to replace things like des_read_password and friends (backward
5262 compatibility functions using this new API are provided).
5263 The purpose is to remove prompting functions from the DES code
5264 section as well as provide for prompting through dialog boxes in
5265 a window system and the like.
5268 *) Add "ex_data" support to ENGINE so implementations can add state at a
5269 per-structure level rather than having to store it globally.
5272 *) Make it possible for ENGINE structures to be copied when retrieved by
5273 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
5274 This causes the "original" ENGINE structure to act like a template,
5275 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
5276 operational state can be localised to each ENGINE structure, despite the
5277 fact they all share the same "methods". New ENGINE structures returned in
5278 this case have no functional references and the return value is the single
5279 structural reference. This matches the single structural reference returned
5280 by ENGINE_by_id() normally, when it is incremented on the pre-existing
5284 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
5285 needs to match any other type at all we need to manually clear the
5289 *) Changes to the "openssl engine" utility to include;
5290 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
5291 about an ENGINE's available control commands.
5292 - executing control commands from command line arguments using the
5293 '-pre' and '-post' switches. '-post' is only used if '-t' is
5294 specified and the ENGINE is successfully initialised. The syntax for
5295 the individual commands are colon-separated, for example;
5296 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
5299 *) New dynamic control command support for ENGINEs. ENGINEs can now
5300 declare their own commands (numbers), names (strings), descriptions,
5301 and input types for run-time discovery by calling applications. A
5302 subset of these commands are implicitly classed as "executable"
5303 depending on their input type, and only these can be invoked through
5304 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
5305 can be based on user input, config files, etc). The distinction is
5306 that "executable" commands cannot return anything other than a boolean
5307 result and can only support numeric or string input, whereas some
5308 discoverable commands may only be for direct use through
5309 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
5310 pointers, or other custom uses. The "executable" commands are to
5311 support parameterisations of ENGINE behaviour that can be
5312 unambiguously defined by ENGINEs and used consistently across any
5313 OpenSSL-based application. Commands have been added to all the
5314 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
5315 control over shared-library paths without source code alterations.
5318 *) Changed all ENGINE implementations to dynamically allocate their
5319 ENGINEs rather than declaring them statically. Apart from this being
5320 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
5321 this also allows the implementations to compile without using the
5322 internal engine_int.h header.
5325 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
5326 'const' value. Any code that should be able to modify a RAND_METHOD
5327 should already have non-const pointers to it (ie. they should only
5328 modify their own ones).
5331 *) Made a variety of little tweaks to the ENGINE code.
5332 - "atalla" and "ubsec" string definitions were moved from header files
5333 to C code. "nuron" string definitions were placed in variables
5334 rather than hard-coded - allowing parameterisation of these values
5335 later on via ctrl() commands.
5336 - Removed unused "#if 0"'d code.
5337 - Fixed engine list iteration code so it uses ENGINE_free() to release
5338 structural references.
5339 - Constified the RAND_METHOD element of ENGINE structures.
5340 - Constified various get/set functions as appropriate and added
5341 missing functions (including a catch-all ENGINE_cpy that duplicates
5342 all ENGINE values onto a new ENGINE except reference counts/state).
5343 - Removed NULL parameter checks in get/set functions. Setting a method
5344 or function to NULL is a way of cancelling out a previously set
5345 value. Passing a NULL ENGINE parameter is just plain stupid anyway
5346 and doesn't justify the extra error symbols and code.
5347 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
5348 flags from engine_int.h to engine.h.
5349 - Changed prototypes for ENGINE handler functions (init(), finish(),
5350 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
5353 *) Implement binary inversion algorithm for BN_mod_inverse in addition
5354 to the algorithm using long division. The binary algorithm can be
5355 used only if the modulus is odd. On 32-bit systems, it is faster
5356 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
5357 roughly 5-15% for 256-bit moduli), so we use it only for moduli
5358 up to 450 bits. In 64-bit environments, the binary algorithm
5359 appears to be advantageous for much longer moduli; here we use it
5360 for moduli up to 2048 bits.
5363 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
5364 could not support the combine flag in choice fields.
5367 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
5368 extensions from a certificate request to the certificate.
5371 *) Allow multiple 'certopt' and 'nameopt' options to be separated
5372 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
5373 file: this allows the display of the certificate about to be
5374 signed to be customised, to allow certain fields to be included
5375 or excluded and extension details. The old system didn't display
5376 multicharacter strings properly, omitted fields not in the policy
5377 and couldn't display additional details such as extensions.
5380 *) Function EC_POINTs_mul for multiple scalar multiplication
5381 of an arbitrary number of elliptic curve points
5382 \sum scalars[i]*points[i],
5383 optionally including the generator defined for the EC_GROUP:
5384 scalar*generator + \sum scalars[i]*points[i].
5386 EC_POINT_mul is a simple wrapper function for the typical case
5387 that the point list has just one item (besides the optional
5391 *) First EC_METHODs for curves over GF(p):
5393 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
5394 operations and provides various method functions that can also
5395 operate with faster implementations of modular arithmetic.
5397 EC_GFp_mont_method() reuses most functions that are part of
5398 EC_GFp_simple_method, but uses Montgomery arithmetic.
5400 [Bodo Moeller; point addition and point doubling
5401 implementation directly derived from source code provided by
5402 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
5404 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
5405 crypto/ec/ec_lib.c):
5407 Curves are EC_GROUP objects (with an optional group generator)
5408 based on EC_METHODs that are built into the library.
5410 Points are EC_POINT objects based on EC_GROUP objects.
5412 Most of the framework would be able to handle curves over arbitrary
5413 finite fields, but as there are no obvious types for fields other
5414 than GF(p), some functions are limited to that for now.
5417 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
5418 that the file contains a complete HTTP response.
5421 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
5422 change the def and num file printf format specifier from "%-40sXXX"
5423 to "%-39s XXX". The latter will always guarantee a space after the
5424 field while the former will cause them to run together if the field
5425 is 40 of more characters long.
5428 *) Constify the cipher and digest 'method' functions and structures
5429 and modify related functions to take constant EVP_MD and EVP_CIPHER
5433 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
5434 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
5437 *) Modify EVP_Digest*() routines so they now return values. Although the
5438 internal software routines can never fail additional hardware versions
5442 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
5444 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
5445 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
5448 ERR_R_NESTED_ASN1_ERROR
5450 ERR_R_MISSING_ASN1_EOS
5451 were 4 .. 9, conflicting with
5452 ERR_LIB_RSA (= ERR_R_RSA_LIB)
5454 ERR_LIB_PEM (= ERR_R_PEM_LIB).
5455 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
5457 Add new error code 'ERR_R_INTERNAL_ERROR'.
5460 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
5464 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
5465 sets the subject name for a new request or supersedes the
5466 subject name in a given request. Formats that can be parsed are
5467 'CN=Some Name, OU=myOU, C=IT'
5469 'CN=Some Name/OU=myOU/C=IT'.
5471 Add options '-batch' and '-verbose' to 'openssl req'.
5472 [Massimiliano Pala <madwolf@hackmasters.net>]
5474 *) Introduce the possibility to access global variables through
5475 functions on platform were that's the best way to handle exporting
5476 global variables in shared libraries. To enable this functionality,
5477 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
5478 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
5479 is normally done by Configure or something similar).
5481 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
5482 in the source file (foo.c) like this:
5484 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
5485 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
5487 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
5488 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
5490 OPENSSL_DECLARE_GLOBAL(int,foo);
5491 #define foo OPENSSL_GLOBAL_REF(foo)
5492 OPENSSL_DECLARE_GLOBAL(double,bar);
5493 #define bar OPENSSL_GLOBAL_REF(bar)
5495 The #defines are very important, and therefore so is including the
5496 header file everywhere where the defined globals are used.
5498 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
5499 of ASN.1 items, but that structure is a bit different.
5501 The largest change is in util/mkdef.pl which has been enhanced with
5502 better and easier to understand logic to choose which symbols should
5503 go into the Windows .def files as well as a number of fixes and code
5504 cleanup (among others, algorithm keywords are now sorted
5505 lexicographically to avoid constant rewrites).
5508 *) In BN_div() keep a copy of the sign of 'num' before writing the
5509 result to 'rm' because if rm==num the value will be overwritten
5510 and produce the wrong result if 'num' is negative: this caused
5511 problems with BN_mod() and BN_nnmod().
5514 *) Function OCSP_request_verify(). This checks the signature on an
5515 OCSP request and verifies the signer certificate. The signer
5516 certificate is just checked for a generic purpose and OCSP request
5520 *) Add OCSP_check_validity() function to check the validity of OCSP
5521 responses. OCSP responses are prepared in real time and may only
5522 be a few seconds old. Simply checking that the current time lies
5523 between thisUpdate and nextUpdate max reject otherwise valid responses
5524 caused by either OCSP responder or client clock inaccuracy. Instead
5525 we allow thisUpdate and nextUpdate to fall within a certain period of
5526 the current time. The age of the response can also optionally be
5527 checked. Two new options -validity_period and -status_age added to
5531 *) If signature or public key algorithm is unrecognized print out its
5532 OID rather that just UNKNOWN.
5535 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
5536 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
5537 ID to be generated from the issuer certificate alone which can then be
5538 passed to OCSP_id_issuer_cmp().
5541 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
5542 ASN1 modules to export functions returning ASN1_ITEM pointers
5543 instead of the ASN1_ITEM structures themselves. This adds several
5544 new macros which allow the underlying ASN1 function/structure to
5545 be accessed transparently. As a result code should not use ASN1_ITEM
5546 references directly (such as &X509_it) but instead use the relevant
5547 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
5548 use of the new ASN1 code on platforms where exporting structures
5549 is problematical (for example in shared libraries) but exporting
5550 functions returning pointers to structures is not.
5553 *) Add support for overriding the generation of SSL/TLS session IDs.
5554 These callbacks can be registered either in an SSL_CTX or per SSL.
5555 The purpose of this is to allow applications to control, if they wish,
5556 the arbitrary values chosen for use as session IDs, particularly as it
5557 can be useful for session caching in multiple-server environments. A
5558 command-line switch for testing this (and any client code that wishes
5559 to use such a feature) has been added to "s_server".
5560 [Geoff Thorpe, Lutz Jaenicke]
5562 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
5563 of the form '#if defined(...) || defined(...) || ...' and
5564 '#if !defined(...) && !defined(...) && ...'. This also avoids
5565 the growing number of special cases it was previously handling.
5568 *) Make all configuration macros available for application by making
5569 sure they are available in opensslconf.h, by giving them names starting
5570 with "OPENSSL_" to avoid conflicts with other packages and by making
5571 sure e_os2.h will cover all platform-specific cases together with
5573 Additionally, it is now possible to define configuration/platform-
5574 specific names (called "system identities"). In the C code, these
5575 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
5576 macro with the name beginning with "OPENSSL_SYS_", which is determined
5577 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
5581 *) New option -set_serial to 'req' and 'x509' this allows the serial
5582 number to use to be specified on the command line. Previously self
5583 signed certificates were hard coded with serial number 0 and the
5584 CA options of 'x509' had to use a serial number in a file which was
5588 *) New options to 'ca' utility to support V2 CRL entry extensions.
5589 Currently CRL reason, invalidity date and hold instruction are
5590 supported. Add new CRL extensions to V3 code and some new objects.
5593 *) New function EVP_CIPHER_CTX_set_padding() this is used to
5594 disable standard block padding (aka PKCS#5 padding) in the EVP
5595 API, which was previously mandatory. This means that the data is
5596 not padded in any way and so the total length much be a multiple
5597 of the block size, otherwise an error occurs.
5600 *) Initial (incomplete) OCSP SSL support.
5603 *) New function OCSP_parse_url(). This splits up a URL into its host,
5604 port and path components: primarily to parse OCSP URLs. New -url
5605 option to ocsp utility.
5608 *) New nonce behavior. The return value of OCSP_check_nonce() now
5609 reflects the various checks performed. Applications can decide
5610 whether to tolerate certain situations such as an absent nonce
5611 in a response when one was present in a request: the ocsp application
5612 just prints out a warning. New function OCSP_add1_basic_nonce()
5613 this is to allow responders to include a nonce in a response even if
5614 the request is nonce-less.
5617 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
5618 skipped when using openssl x509 multiple times on a single input file,
5619 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
5622 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
5623 set string type: to handle setting ASN1_TIME structures. Fix ca
5624 utility to correctly initialize revocation date of CRLs.
5627 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
5628 the clients preferred ciphersuites and rather use its own preferences.
5629 Should help to work around M$ SGC (Server Gated Cryptography) bug in
5630 Internet Explorer by ensuring unchanged hash method during stepup.
5631 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
5634 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
5635 to aes and add a new 'exist' option to print out symbols that don't
5639 *) Additional options to ocsp utility to allow flags to be set and
5640 additional certificates supplied.
5643 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
5644 OCSP client a number of certificate to only verify the response
5648 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
5649 handle the new API. Currently only ECB, CBC modes supported. Add new
5652 Add TLS AES ciphersuites as described in RFC3268, "Advanced
5653 Encryption Standard (AES) Ciphersuites for Transport Layer
5654 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
5655 not enabled by default and were not part of the "ALL" ciphersuite
5656 alias because they were not yet official; they could be
5657 explicitly requested by specifying the "AESdraft" ciphersuite
5658 group alias. In the final release of OpenSSL 0.9.7, the group
5659 alias is called "AES" and is part of "ALL".)
5660 [Ben Laurie, Steve Henson, Bodo Moeller]
5662 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
5663 request to response.
5666 *) Functions for OCSP responders. OCSP_request_onereq_count(),
5667 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
5668 extract information from a certificate request. OCSP_response_create()
5669 creates a response and optionally adds a basic response structure.
5670 OCSP_basic_add1_status() adds a complete single response to a basic
5671 response and returns the OCSP_SINGLERESP structure just added (to allow
5672 extensions to be included for example). OCSP_basic_add1_cert() adds a
5673 certificate to a basic response and OCSP_basic_sign() signs a basic
5674 response with various flags. New helper functions ASN1_TIME_check()
5675 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
5676 (converts ASN1_TIME to GeneralizedTime).
5679 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
5680 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
5681 structure from a certificate. X509_pubkey_digest() digests the public_key
5682 contents: this is used in various key identifiers.
5685 *) Make sk_sort() tolerate a NULL argument.
5686 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
5688 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
5689 passed by the function are trusted implicitly. If any of them signed the
5690 response then it is assumed to be valid and is not verified.
5693 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
5694 to data. This was previously part of the PKCS7 ASN1 code. This
5695 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
5696 [Steve Henson, reported by Kenneth R. Robinette
5697 <support@securenetterm.com>]
5699 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
5700 routines: without these tracing memory leaks is very painful.
5701 Fix leaks in PKCS12 and PKCS7 routines.
5704 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
5705 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
5706 effectively meant GeneralizedTime would never be used. Now it
5707 is initialised to -1 but X509_time_adj() now has to check the value
5708 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
5709 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
5710 [Steve Henson, reported by Kenneth R. Robinette
5711 <support@securenetterm.com>]
5713 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
5714 result in a zero length in the ASN1_INTEGER structure which was
5715 not consistent with the structure when d2i_ASN1_INTEGER() was used
5716 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
5717 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
5718 where it did not print out a minus for negative ASN1_INTEGER.
5721 *) Add summary printout to ocsp utility. The various functions which
5722 convert status values to strings have been renamed to:
5723 OCSP_response_status_str(), OCSP_cert_status_str() and
5724 OCSP_crl_reason_str() and are no longer static. New options
5725 to verify nonce values and to disable verification. OCSP response
5726 printout format cleaned up.
5729 *) Add additional OCSP certificate checks. These are those specified
5730 in RFC2560. This consists of two separate checks: the CA of the
5731 certificate being checked must either be the OCSP signer certificate
5732 or the issuer of the OCSP signer certificate. In the latter case the
5733 OCSP signer certificate must contain the OCSP signing extended key
5734 usage. This check is performed by attempting to match the OCSP
5735 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
5736 in the OCSP_CERTID structures of the response.
5739 *) Initial OCSP certificate verification added to OCSP_basic_verify()
5740 and related routines. This uses the standard OpenSSL certificate
5741 verify routines to perform initial checks (just CA validity) and
5742 to obtain the certificate chain. Then additional checks will be
5743 performed on the chain. Currently the root CA is checked to see
5744 if it is explicitly trusted for OCSP signing. This is used to set
5745 a root CA as a global signing root: that is any certificate that
5746 chains to that CA is an acceptable OCSP signing certificate.
5749 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
5750 extensions from a separate configuration file.
5751 As when reading extensions from the main configuration file,
5752 the '-extensions ...' option may be used for specifying the
5754 [Massimiliano Pala <madwolf@comune.modena.it>]
5756 *) New OCSP utility. Allows OCSP requests to be generated or
5757 read. The request can be sent to a responder and the output
5758 parsed, outputed or printed in text form. Not complete yet:
5759 still needs to check the OCSP response validity.
5762 *) New subcommands for 'openssl ca':
5763 'openssl ca -status <serial>' prints the status of the cert with
5764 the given serial number (according to the index file).
5765 'openssl ca -updatedb' updates the expiry status of certificates
5767 [Massimiliano Pala <madwolf@comune.modena.it>]
5769 *) New '-newreq-nodes' command option to CA.pl. This is like
5770 '-newreq', but calls 'openssl req' with the '-nodes' option
5771 so that the resulting key is not encrypted.
5772 [Damien Miller <djm@mindrot.org>]
5774 *) New configuration for the GNU Hurd.
5775 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
5777 *) Initial code to implement OCSP basic response verify. This
5778 is currently incomplete. Currently just finds the signer's
5779 certificate and verifies the signature on the response.
5782 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
5783 value of OPENSSLDIR. This is available via the new '-d' option
5784 to 'openssl version', and is also included in 'openssl version -a'.
5787 *) Allowing defining memory allocation callbacks that will be given
5788 file name and line number information in additional arguments
5789 (a const char* and an int). The basic functionality remains, as
5790 well as the original possibility to just replace malloc(),
5791 realloc() and free() by functions that do not know about these
5792 additional arguments. To register and find out the current
5793 settings for extended allocation functions, the following
5794 functions are provided:
5796 CRYPTO_set_mem_ex_functions
5797 CRYPTO_set_locked_mem_ex_functions
5798 CRYPTO_get_mem_ex_functions
5799 CRYPTO_get_locked_mem_ex_functions
5801 These work the same way as CRYPTO_set_mem_functions and friends.
5802 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
5803 extended allocation function is enabled.
5804 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
5805 a conventional allocation function is enabled.
5806 [Richard Levitte, Bodo Moeller]
5808 *) Finish off removing the remaining LHASH function pointer casts.
5809 There should no longer be any prototype-casting required when using
5810 the LHASH abstraction, and any casts that remain are "bugs". See
5811 the callback types and macros at the head of lhash.h for details
5812 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
5815 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
5816 If /dev/[u]random devices are not available or do not return enough
5817 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
5819 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
5820 /etc/entropy will be queried once each in this sequence, quering stops
5821 when enough entropy was collected without querying more sockets.
5824 *) Change the Unix RAND_poll() variant to be able to poll several
5825 random devices, as specified by DEVRANDOM, until a sufficient amount
5826 of data has been collected. We spend at most 10 ms on each file
5827 (select timeout) and read in non-blocking mode. DEVRANDOM now
5828 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
5829 (previously it was just the string "/dev/urandom"), so on typical
5830 platforms the 10 ms delay will never occur.
5831 Also separate out the Unix variant to its own file, rand_unix.c.
5832 For VMS, there's a currently-empty rand_vms.c.
5835 *) Move OCSP client related routines to ocsp_cl.c. These
5836 provide utility functions which an application needing
5837 to issue a request to an OCSP responder and analyse the
5838 response will typically need: as opposed to those which an
5839 OCSP responder itself would need which will be added later.
5841 OCSP_request_sign() signs an OCSP request with an API similar
5842 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
5843 response. OCSP_response_get1_basic() extracts basic response
5844 from response. OCSP_resp_find_status(): finds and extracts status
5845 information from an OCSP_CERTID structure (which will be created
5846 when the request structure is built). These are built from lower
5847 level functions which work on OCSP_SINGLERESP structures but
5848 wont normally be used unless the application wishes to examine
5849 extensions in the OCSP response for example.
5851 Replace nonce routines with a pair of functions.
5852 OCSP_request_add1_nonce() adds a nonce value and optionally
5853 generates a random value. OCSP_check_nonce() checks the
5854 validity of the nonce in an OCSP response.
5857 *) Change function OCSP_request_add() to OCSP_request_add0_id().
5858 This doesn't copy the supplied OCSP_CERTID and avoids the
5859 need to free up the newly created id. Change return type
5860 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
5861 This can then be used to add extensions to the request.
5862 Deleted OCSP_request_new(), since most of its functionality
5863 is now in OCSP_REQUEST_new() (and the case insensitive name
5864 clash) apart from the ability to set the request name which
5865 will be added elsewhere.
5868 *) Update OCSP API. Remove obsolete extensions argument from
5869 various functions. Extensions are now handled using the new
5870 OCSP extension code. New simple OCSP HTTP function which
5871 can be used to send requests and parse the response.
5874 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
5875 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
5876 uses the special reorder version of SET OF to sort the attributes
5877 and reorder them to match the encoded order. This resolves a long
5878 standing problem: a verify on a PKCS7 structure just after signing
5879 it used to fail because the attribute order did not match the
5880 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
5881 it uses the received order. This is necessary to tolerate some broken
5882 software that does not order SET OF. This is handled by encoding
5883 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
5884 to produce the required SET OF.
5887 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
5888 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
5889 files to get correct declarations of the ASN.1 item variables.
5892 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
5893 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
5894 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
5895 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
5896 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
5897 ASN1_ITEM and no wrapper functions.
5900 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
5901 replace the old function pointer based I/O routines. Change most of
5902 the *_d2i_bio() and *_d2i_fp() functions to use these.
5905 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
5906 lines, recognice more "algorithms" that can be deselected, and make
5907 it complain about algorithm deselection that isn't recognised.
5910 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
5911 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
5912 to use new functions. Add NO_ASN1_OLD which can be set to remove
5913 some old style ASN1 functions: this can be used to determine if old
5914 code will still work when these eventually go away.
5917 *) New extension functions for OCSP structures, these follow the
5918 same conventions as certificates and CRLs.
5921 *) New function X509V3_add1_i2d(). This automatically encodes and
5922 adds an extension. Its behaviour can be customised with various
5923 flags to append, replace or delete. Various wrappers added for
5924 certifcates and CRLs.
5927 *) Fix to avoid calling the underlying ASN1 print routine when
5928 an extension cannot be parsed. Correct a typo in the
5929 OCSP_SERVICELOC extension. Tidy up print OCSP format.
5932 *) Make mkdef.pl parse some of the ASN1 macros and add apropriate
5933 entries for variables.
5936 *) Add functionality to apps/openssl.c for detecting locking
5937 problems: As the program is single-threaded, all we have
5938 to do is register a locking callback using an array for
5939 storing which locks are currently held by the program.
5942 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
5943 SSL_get_ex_data_X509_STORE_idx(), which is used in
5944 ssl_verify_cert_chain() and thus can be called at any time
5945 during TLS/SSL handshakes so that thread-safety is essential.
5946 Unfortunately, the ex_data design is not at all suited
5947 for multi-threaded use, so it probably should be abolished.
5950 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
5951 [Broadcom, tweaked and integrated by Geoff Thorpe]
5953 *) Move common extension printing code to new function
5954 X509V3_print_extensions(). Reorganise OCSP print routines and
5955 implement some needed OCSP ASN1 functions. Add OCSP extensions.
5958 *) New function X509_signature_print() to remove duplication in some
5962 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
5963 set (this was treated exactly the same as SET OF previously). This
5964 is used to reorder the STACK representing the structure to match the
5965 encoding. This will be used to get round a problem where a PKCS7
5966 structure which was signed could not be verified because the STACK
5967 order did not reflect the encoded order.
5970 *) Reimplement the OCSP ASN1 module using the new code.
5973 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
5974 for its ASN1 operations. The old style function pointers still exist
5975 for now but they will eventually go away.
5978 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
5979 completely replaces the old ASN1 functionality with a table driven
5980 encoder and decoder which interprets an ASN1_ITEM structure describing
5981 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
5982 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
5983 has also been converted to the new form.
5986 *) Change BN_mod_exp_recp so that negative moduli are tolerated
5987 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
5988 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
5989 for negative moduli.
5992 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
5993 of not touching the result's sign bit.
5996 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
6000 *) Changed the LHASH code to use prototypes for callbacks, and created
6001 macros to declare and implement thin (optionally static) functions
6002 that provide type-safety and avoid function pointer casting for the
6003 type-specific callbacks.
6006 *) Added Kerberos Cipher Suites to be used with TLS, as written in
6008 [Veers Staats <staatsvr@asc.hpc.mil>,
6009 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
6011 *) Reformat the FAQ so the different questions and answers can be divided
6012 in sections depending on the subject.
6015 *) Have the zlib compression code load ZLIB.DLL dynamically under
6019 *) New function BN_mod_sqrt for computing square roots modulo a prime
6020 (using the probabilistic Tonelli-Shanks algorithm unless
6021 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
6022 be handled deterministically).
6023 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
6025 *) Make BN_mod_inverse faster by explicitly handling small quotients
6026 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
6027 512 bits], about 30% for larger ones [1024 or 2048 bits].)
6030 *) New function BN_kronecker.
6033 *) Fix BN_gcd so that it works on negative inputs; the result is
6034 positive unless both parameters are zero.
6035 Previously something reasonably close to an infinite loop was
6036 possible because numbers could be growing instead of shrinking
6037 in the implementation of Euclid's algorithm.
6040 *) Fix BN_is_word() and BN_is_one() macros to take into account the
6041 sign of the number in question.
6043 Fix BN_is_word(a,w) to work correctly for w == 0.
6045 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
6046 because its test if the absolute value of 'a' equals 'w'.
6047 Note that BN_abs_is_word does *not* handle w == 0 reliably;
6048 it exists mostly for use in the implementations of BN_is_zero(),
6049 BN_is_one(), and BN_is_word().
6052 *) New function BN_swap.
6055 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
6056 the exponentiation functions are more likely to produce reasonable
6057 results on negative inputs.
6060 *) Change BN_mod_mul so that the result is always non-negative.
6061 Previously, it could be negative if one of the factors was negative;
6062 I don't think anyone really wanted that behaviour.
6065 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
6066 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
6067 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
6068 and add new functions:
6077 BN_mod_lshift1_quick
6081 These functions always generate non-negative results.
6083 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
6084 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
6086 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
6087 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
6088 be reduced modulo m.
6089 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
6092 The following entry accidentily appeared in the CHANGES file
6093 distributed with OpenSSL 0.9.7. The modifications described in
6094 it do *not* apply to OpenSSL 0.9.7.
6096 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
6097 was actually never needed) and in BN_mul(). The removal in BN_mul()
6098 required a small change in bn_mul_part_recursive() and the addition
6099 of the functions bn_cmp_part_words(), bn_sub_part_words() and
6100 bn_add_part_words(), which do the same thing as bn_cmp_words(),
6101 bn_sub_words() and bn_add_words() except they take arrays with
6106 *) In 'openssl passwd', verify passwords read from the terminal
6107 unless the '-salt' option is used (which usually means that
6108 verification would just waste user's time since the resulting
6109 hash is going to be compared with some given password hash)
6110 or the new '-noverify' option is used.
6112 This is an incompatible change, but it does not affect
6113 non-interactive use of 'openssl passwd' (passwords on the command
6114 line, '-stdin' option, '-in ...' option) and thus should not
6118 *) Remove all references to RSAref, since there's no more need for it.
6121 *) Make DSO load along a path given through an environment variable
6122 (SHLIB_PATH) with shl_load().
6125 *) Constify the ENGINE code as a result of BIGNUM constification.
6126 Also constify the RSA code and most things related to it. In a
6127 few places, most notable in the depth of the ASN.1 code, ugly
6128 casts back to non-const were required (to be solved at a later
6132 *) Make it so the openssl application has all engines loaded by default.
6135 *) Constify the BIGNUM routines a little more.
6138 *) Add the following functions:
6140 ENGINE_load_cswift()
6142 ENGINE_load_atalla()
6144 ENGINE_load_builtin_engines()
6146 That way, an application can itself choose if external engines that
6147 are built-in in OpenSSL shall ever be used or not. The benefit is
6148 that applications won't have to be linked with libdl or other dso
6149 libraries unless it's really needed.
6151 Changed 'openssl engine' to load all engines on demand.
6152 Changed the engine header files to avoid the duplication of some
6153 declarations (they differed!).
6156 *) 'openssl engine' can now list capabilities.
6159 *) Better error reporting in 'openssl engine'.
6162 *) Never call load_dh_param(NULL) in s_server.
6165 *) Add engine application. It can currently list engines by name and
6166 identity, and test if they are actually available.
6169 *) Improve RPM specification file by forcing symbolic linking and making
6170 sure the installed documentation is also owned by root.root.
6171 [Damien Miller <djm@mindrot.org>]
6173 *) Give the OpenSSL applications more possibilities to make use of
6174 keys (public as well as private) handled by engines.
6177 *) Add OCSP code that comes from CertCo.
6180 *) Add VMS support for the Rijndael code.
6183 *) Added untested support for Nuron crypto accelerator.
6186 *) Add support for external cryptographic devices. This code was
6187 previously distributed separately as the "engine" branch.
6188 [Geoff Thorpe, Richard Levitte]
6190 *) Rework the filename-translation in the DSO code. It is now possible to
6191 have far greater control over how a "name" is turned into a filename
6192 depending on the operating environment and any oddities about the
6193 different shared library filenames on each system.
6196 *) Support threads on FreeBSD-elf in Configure.
6199 *) Fix for SHA1 assembly problem with MASM: it produces
6200 warnings about corrupt line number information when assembling
6201 with debugging information. This is caused by the overlapping
6203 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
6206 NCONF_get_number() has no error checking at all. As a replacement,
6207 NCONF_get_number_e() is defined (_e for "error checking") and is
6208 promoted strongly. The old NCONF_get_number is kept around for
6209 binary backward compatibility.
6210 Make it possible for methods to load from something other than a BIO,
6211 by providing a function pointer that is given a name instead of a BIO.
6212 For example, this could be used to load configuration data from an
6216 *) Fix for non blocking accept BIOs. Added new I/O special reason
6217 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
6218 with non blocking I/O was not possible because no retry code was
6219 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
6223 *) Added the beginnings of Rijndael support.
6226 *) Fix for bug in DirectoryString mask setting. Add support for
6227 X509_NAME_print_ex() in 'req' and X509_print_ex() function
6228 to allow certificate printing to more controllable, additional
6229 'certopt' option to 'x509' to allow new printing options to be
6233 *) Clean old EAY MD5 hack from e_os.h.
6236 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
6238 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
6239 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
6240 [Joe Orton, Steve Henson]
6242 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
6244 *) Fix additional bug revealed by the NISCC test suite:
6246 Stop bug triggering large recursion when presented with
6247 certain ASN.1 tags (CVE-2003-0851)
6250 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
6252 *) Fix various bugs revealed by running the NISCC test suite:
6254 Stop out of bounds reads in the ASN1 code when presented with
6255 invalid tags (CVE-2003-0543 and CVE-2003-0544).
6257 If verify callback ignores invalid public key errors don't try to check
6258 certificate signature with the NULL public key.
6262 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
6263 if the server requested one: as stated in TLS 1.0 and SSL 3.0
6267 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
6268 extra data after the compression methods not only for TLS 1.0
6269 but also for SSL 3.0 (as required by the specification).
6270 [Bodo Moeller; problem pointed out by Matthias Loepfe]
6272 *) Change X509_certificate_type() to mark the key as exported/exportable
6273 when it's 512 *bits* long, not 512 bytes.
6276 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
6278 *) Countermeasure against the Klima-Pokorny-Rosa extension of
6279 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
6280 a protocol version number mismatch like a decryption error
6281 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
6284 *) Turn on RSA blinding by default in the default implementation
6285 to avoid a timing attack. Applications that don't want it can call
6286 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
6287 They would be ill-advised to do so in most cases.
6288 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
6290 *) Change RSA blinding code so that it works when the PRNG is not
6291 seeded (in this case, the secret RSA exponent is abused as
6292 an unpredictable seed -- if it is not unpredictable, there
6293 is no point in blinding anyway). Make RSA blinding thread-safe
6294 by remembering the creator's thread ID in rsa->blinding and
6295 having all other threads use local one-time blinding factors
6296 (this requires more computation than sharing rsa->blinding, but
6297 avoids excessive locking; and if an RSA object is not shared
6298 between threads, blinding will still be very fast).
6301 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
6303 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
6304 via timing by performing a MAC computation even if incorrrect
6305 block cipher padding has been found. This is a countermeasure
6306 against active attacks where the attacker has to distinguish
6307 between bad padding and a MAC verification error. (CVE-2003-0078)
6309 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
6310 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
6311 Martin Vuagnoux (EPFL, Ilion)]
6313 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
6315 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
6316 memory from it's contents. This is done with a counter that will
6317 place alternating values in each byte. This can be used to solve
6318 two issues: 1) the removal of calls to memset() by highly optimizing
6319 compilers, and 2) cleansing with other values than 0, since those can
6320 be read through on certain media, for example a swap space on disk.
6323 *) Bugfix: client side session caching did not work with external caching,
6324 because the session->cipher setting was not restored when reloading
6325 from the external cache. This problem was masked, when
6326 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
6327 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
6330 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
6331 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
6332 [Zeev Lieber <zeev-l@yahoo.com>]
6334 *) Undo an undocumented change introduced in 0.9.6e which caused
6335 repeated calls to OpenSSL_add_all_ciphers() and
6336 OpenSSL_add_all_digests() to be ignored, even after calling
6340 *) Change the default configuration reader to deal with last line not
6341 being properly terminated.
6344 *) Change X509_NAME_cmp() so it applies the special rules on handling
6345 DN values that are of type PrintableString, as well as RDNs of type
6346 emailAddress where the value has the type ia5String.
6347 [stefank@valicert.com via Richard Levitte]
6349 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
6350 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
6351 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
6352 the bitwise-OR of the two for use by the majority of applications
6353 wanting this behaviour, and update the docs. The documented
6354 behaviour and actual behaviour were inconsistent and had been
6355 changing anyway, so this is more a bug-fix than a behavioural
6357 [Geoff Thorpe, diagnosed by Nadav Har'El]
6359 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
6360 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
6363 *) Fix initialization code race conditions in
6364 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
6365 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
6366 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
6367 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
6368 ssl2_get_cipher_by_char(),
6369 ssl3_get_cipher_by_char().
6370 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
6372 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
6373 the cached sessions are flushed, as the remove_cb() might use ex_data
6374 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
6375 (see [openssl.org #212]).
6376 [Geoff Thorpe, Lutz Jaenicke]
6378 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
6379 length, instead of the encoding length to d2i_ASN1_OBJECT.
6382 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
6384 *) [In 0.9.6g-engine release:]
6385 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
6386 [Lynn Gazis <lgazis@rainbow.com>]
6388 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
6390 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
6391 and get fix the header length calculation.
6392 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
6393 Alon Kantor <alonk@checkpoint.com> (and others),
6396 *) Use proper error handling instead of 'assertions' in buffer
6397 overflow checks added in 0.9.6e. This prevents DoS (the
6398 assertions could call abort()).
6399 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
6401 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
6403 *) Add various sanity checks to asn1_get_length() to reject
6404 the ASN1 length bytes if they exceed sizeof(long), will appear
6405 negative or the content length exceeds the length of the
6407 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
6409 *) Fix cipher selection routines: ciphers without encryption had no flags
6410 for the cipher strength set and where therefore not handled correctly
6411 by the selection routines (PR #130).
6414 *) Fix EVP_dsa_sha macro.
6418 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
6419 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
6420 that was added in OpenSSL 0.9.6d.
6422 As the countermeasure turned out to be incompatible with some
6423 broken SSL implementations, the new option is part of SSL_OP_ALL.
6424 SSL_OP_ALL is usually employed when compatibility with weird SSL
6425 implementations is desired (e.g. '-bugs' option to 's_client' and
6426 's_server'), so the new option is automatically set in many
6430 *) Changes in security patch:
6432 Changes marked "(CHATS)" were sponsored by the Defense Advanced
6433 Research Projects Agency (DARPA) and Air Force Research Laboratory,
6434 Air Force Materiel Command, USAF, under agreement number
6437 *) Add various sanity checks to asn1_get_length() to reject
6438 the ASN1 length bytes if they exceed sizeof(long), will appear
6439 negative or the content length exceeds the length of the
6440 supplied buffer. (CVE-2002-0659)
6441 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
6443 *) Assertions for various potential buffer overflows, not known to
6445 [Ben Laurie (CHATS)]
6447 *) Various temporary buffers to hold ASCII versions of integers were
6448 too small for 64 bit platforms. (CVE-2002-0655)
6449 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
6451 *) Remote buffer overflow in SSL3 protocol - an attacker could
6452 supply an oversized session ID to a client. (CVE-2002-0656)
6453 [Ben Laurie (CHATS)]
6455 *) Remote buffer overflow in SSL2 protocol - an attacker could
6456 supply an oversized client master key. (CVE-2002-0656)
6457 [Ben Laurie (CHATS)]
6459 Changes between 0.9.6c and 0.9.6d [9 May 2002]
6461 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
6462 encoded as NULL) with id-dsa-with-sha1.
6463 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
6465 *) Check various X509_...() return values in apps/req.c.
6466 [Nils Larsch <nla@trustcenter.de>]
6468 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
6469 an end-of-file condition would erronously be flagged, when the CRLF
6470 was just at the end of a processed block. The bug was discovered when
6471 processing data through a buffering memory BIO handing the data to a
6472 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
6473 <ptsekov@syntrex.com> and Nedelcho Stanev.
6476 *) Implement a countermeasure against a vulnerability recently found
6477 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
6478 before application data chunks to avoid the use of known IVs
6479 with data potentially chosen by the attacker.
6482 *) Fix length checks in ssl3_get_client_hello().
6485 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
6486 to prevent ssl3_read_internal() from incorrectly assuming that
6487 ssl3_read_bytes() found application data while handshake
6488 processing was enabled when in fact s->s3->in_read_app_data was
6489 merely automatically cleared during the initial handshake.
6490 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
6492 *) Fix object definitions for Private and Enterprise: they were not
6493 recognized in their shortname (=lowercase) representation. Extend
6494 obj_dat.pl to issue an error when using undefined keywords instead
6495 of silently ignoring the problem (Svenning Sorensen
6496 <sss@sss.dnsalias.net>).
6499 *) Fix DH_generate_parameters() so that it works for 'non-standard'
6500 generators, i.e. generators other than 2 and 5. (Previously, the
6501 code did not properly initialise the 'add' and 'rem' values to
6502 BN_generate_prime().)
6504 In the new general case, we do not insist that 'generator' is
6505 actually a primitive root: This requirement is rather pointless;
6506 a generator of the order-q subgroup is just as good, if not
6510 *) Map new X509 verification errors to alerts. Discovered and submitted by
6511 Tom Wu <tom@arcot.com>.
6514 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
6515 returning non-zero before the data has been completely received
6516 when using non-blocking I/O.
6517 [Bodo Moeller; problem pointed out by John Hughes]
6519 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
6520 [Ben Laurie, Lutz Jaenicke]
6522 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
6523 Yoram Zahavi <YoramZ@gilian.com>).
6526 *) Add information about CygWin 1.3 and on, and preserve proper
6527 configuration for the versions before that.
6528 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
6530 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
6531 check whether we deal with a copy of a session and do not delete from
6532 the cache in this case. Problem reported by "Izhar Shoshani Levi"
6533 <izhar@checkpoint.com>.
6536 *) Do not store session data into the internal session cache, if it
6537 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
6538 flag is set). Proposed by Aslam <aslam@funk.com>.
6541 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
6545 *) [In 0.9.6d-engine release:]
6546 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
6547 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
6549 *) Add the configuration target linux-s390x.
6550 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
6552 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
6553 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
6554 variable as an indication that a ClientHello message has been
6555 received. As the flag value will be lost between multiple
6556 invocations of ssl3_accept when using non-blocking I/O, the
6557 function may not be aware that a handshake has actually taken
6558 place, thus preventing a new session from being added to the
6561 To avoid this problem, we now set s->new_session to 2 instead of
6562 using a local variable.
6563 [Lutz Jaenicke, Bodo Moeller]
6565 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
6566 if the SSL_R_LENGTH_MISMATCH error is detected.
6567 [Geoff Thorpe, Bodo Moeller]
6569 *) New 'shared_ldflag' column in Configure platform table.
6572 *) Fix EVP_CIPHER_mode macro.
6573 ["Dan S. Camper" <dan@bti.net>]
6575 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
6576 type, we must throw them away by setting rr->length to 0.
6577 [D P Chang <dpc@qualys.com>]
6579 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
6581 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
6582 <Dominikus.Scherkl@biodata.com>. (The previous implementation
6583 worked incorrectly for those cases where range = 10..._2 and
6584 3*range is two bits longer than range.)
6587 *) Only add signing time to PKCS7 structures if it is not already
6591 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
6592 OBJ_ld_ce should be OBJ_id_ce.
6593 Also some ip-pda OIDs in crypto/objects/objects.txt were
6594 incorrect (cf. RFC 3039).
6595 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
6597 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
6598 returns early because it has nothing to do.
6599 [Andy Schneider <andy.schneider@bjss.co.uk>]
6601 *) [In 0.9.6c-engine release:]
6602 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
6603 [Andy Schneider <andy.schneider@bjss.co.uk>]
6605 *) [In 0.9.6c-engine release:]
6606 Add support for Cryptographic Appliance's keyserver technology.
6607 (Use engine 'keyclient')
6608 [Cryptographic Appliances and Geoff Thorpe]
6610 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
6611 is called via tools/c89.sh because arguments have to be
6612 rearranged (all '-L' options must appear before the first object
6614 [Richard Shapiro <rshapiro@abinitio.com>]
6616 *) [In 0.9.6c-engine release:]
6617 Add support for Broadcom crypto accelerator cards, backported
6619 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
6621 *) [In 0.9.6c-engine release:]
6622 Add support for SureWare crypto accelerator cards from
6623 Baltimore Technologies. (Use engine 'sureware')
6624 [Baltimore Technologies and Mark Cox]
6626 *) [In 0.9.6c-engine release:]
6627 Add support for crypto accelerator cards from Accelerated
6628 Encryption Processing, www.aep.ie. (Use engine 'aep')
6629 [AEP Inc. and Mark Cox]
6631 *) Add a configuration entry for gcc on UnixWare.
6632 [Gary Benson <gbenson@redhat.com>]
6634 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
6635 messages are stored in a single piece (fixed-length part and
6636 variable-length part combined) and fix various bugs found on the way.
6639 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
6640 instead. BIO_gethostbyname() does not know what timeouts are
6641 appropriate, so entries would stay in cache even when they have
6643 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
6645 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
6646 faced with a pathologically small ClientHello fragment that does
6647 not contain client_version: Instead of aborting with an error,
6648 simply choose the highest available protocol version (i.e.,
6649 TLS 1.0 unless it is disabled). In practice, ClientHello
6650 messages are never sent like this, but this change gives us
6651 strictly correct behaviour at least for TLS.
6654 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
6655 never resets s->method to s->ctx->method when called from within
6656 one of the SSL handshake functions.
6657 [Bodo Moeller; problem pointed out by Niko Baric]
6659 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
6660 (sent using the client's version number) if client_version is
6661 smaller than the protocol version in use. Also change
6662 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
6663 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
6664 the client will at least see that alert.
6667 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
6671 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
6672 client receives HelloRequest while in a handshake.
6673 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
6675 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
6676 should end in 'break', not 'goto end' which circuments various
6677 cleanups done in state SSL_ST_OK. But session related stuff
6678 must be disabled for SSL_ST_OK in the case that we just sent a
6681 Also avoid some overhead by not calling ssl_init_wbio_buffer()
6682 before just sending a HelloRequest.
6683 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
6685 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
6686 reveal whether illegal block cipher padding was found or a MAC
6687 verification error occured. (Neither SSLerr() codes nor alerts
6688 are directly visible to potential attackers, but the information
6689 may leak via logfiles.)
6691 Similar changes are not required for the SSL 2.0 implementation
6692 because the number of padding bytes is sent in clear for SSL 2.0,
6693 and the extra bytes are just ignored. However ssl/s2_pkt.c
6694 failed to verify that the purported number of padding bytes is in
6698 *) Add OpenUNIX-8 support including shared libraries
6699 (Boyd Lynn Gerber <gerberb@zenez.com>).
6702 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
6703 'wristwatch attack' using huge encoding parameters (cf.
6704 James H. Manger's CRYPTO 2001 paper). Note that the
6705 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
6706 encoding parameters and hence was not vulnerable.
6709 *) BN_sqr() bug fix.
6710 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
6712 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
6713 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
6714 followed by modular reduction.
6715 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
6717 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
6718 equivalent based on BN_pseudo_rand() instead of BN_rand().
6721 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
6722 This function was broken, as the check for a new client hello message
6723 to handle SGC did not allow these large messages.
6724 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
6727 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
6730 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
6731 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
6734 *) Rework the configuration and shared library support for Tru64 Unix.
6735 The configuration part makes use of modern compiler features and
6736 still retains old compiler behavior for those that run older versions
6737 of the OS. The shared library support part includes a variant that
6738 uses the RPATH feature, and is available through the special
6739 configuration target "alpha-cc-rpath", which will never be selected
6741 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
6743 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
6744 with the same message size as in ssl3_get_certificate_request().
6745 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
6746 messages might inadvertently be reject as too long.
6747 [Petr Lampa <lampa@fee.vutbr.cz>]
6749 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
6752 *) Modified SSL library such that the verify_callback that has been set
6753 specificly for an SSL object with SSL_set_verify() is actually being
6754 used. Before the change, a verify_callback set with this function was
6755 ignored and the verify_callback() set in the SSL_CTX at the time of
6756 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
6757 to allow the necessary settings.
6760 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
6761 explicitly to NULL, as at least on Solaris 8 this seems not always to be
6762 done automatically (in contradiction to the requirements of the C
6763 standard). This made problems when used from OpenSSH.
6766 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
6767 dh->length and always used
6769 BN_rand_range(priv_key, dh->p).
6771 BN_rand_range() is not necessary for Diffie-Hellman, and this
6772 specific range makes Diffie-Hellman unnecessarily inefficient if
6773 dh->length (recommended exponent length) is much smaller than the
6774 length of dh->p. We could use BN_rand_range() if the order of
6775 the subgroup was stored in the DH structure, but we only have
6780 BN_rand(priv_key, l, ...)
6782 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
6788 RSA_eay_public_encrypt
6789 RSA_eay_private_decrypt
6790 RSA_eay_private_encrypt (signing)
6791 RSA_eay_public_decrypt (signature verification)
6793 (default implementations for RSA_public_encrypt,
6794 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
6795 always reject numbers >= n.
6798 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
6799 to synchronize access to 'locking_thread'. This is necessary on
6800 systems where access to 'locking_thread' (an 'unsigned long'
6801 variable) is not atomic.
6804 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
6805 *before* setting the 'crypto_lock_rand' flag. The previous code had
6806 a race condition if 0 is a valid thread ID.
6807 [Travis Vitek <vitek@roguewave.com>]
6809 *) Add support for shared libraries under Irix.
6810 [Albert Chin-A-Young <china@thewrittenword.com>]
6812 *) Add configuration option to build on Linux on both big-endian and
6814 [Ralf Baechle <ralf@uni-koblenz.de>]
6816 *) Add the possibility to create shared libraries on HP-UX.
6819 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
6821 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
6822 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
6823 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
6824 PRNG state recovery was possible based on the output of
6825 one PRNG request appropriately sized to gain knowledge on
6826 'md' followed by enough consecutive 1-byte PRNG requests
6827 to traverse all of 'state'.
6829 1. When updating 'md_local' (the current thread's copy of 'md')
6830 during PRNG output generation, hash all of the previous
6831 'md_local' value, not just the half used for PRNG output.
6833 2. Make the number of bytes from 'state' included into the hash
6834 independent from the number of PRNG bytes requested.
6836 The first measure alone would be sufficient to avoid
6837 Markku-Juhani's attack. (Actually it had never occurred
6838 to me that the half of 'md_local' used for chaining was the
6839 half from which PRNG output bytes were taken -- I had always
6840 assumed that the secret half would be used.) The second
6841 measure makes sure that additional data from 'state' is never
6842 mixed into 'md_local' in small portions; this heuristically
6843 further strengthens the PRNG.
6846 *) Fix crypto/bn/asm/mips3.s.
6849 *) When only the key is given to "enc", the IV is undefined. Print out
6850 an error message in this case.
6853 *) Handle special case when X509_NAME is empty in X509 printing routines.
6856 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
6857 positive and less than q.
6860 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
6861 used: it isn't thread safe and the add_lock_callback should handle
6863 [Paul Rose <Paul.Rose@bridge.com>]
6865 *) Verify that incoming data obeys the block size in
6866 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
6870 [Ulf Möller, Bodo Möller]
6872 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
6873 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
6874 when fixing the server behaviour for backwards-compatible 'client
6875 hello' messages. (Note that the attack is impractical against
6876 SSL 3.0 and TLS 1.0 anyway because length and version checking
6877 means that the probability of guessing a valid ciphertext is
6878 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
6881 Before 0.9.5, the countermeasure (hide the error by generating a
6882 random 'decryption result') did not work properly because
6883 ERR_clear_error() was missing, meaning that SSL_get_error() would
6884 detect the supposedly ignored error.
6886 Both problems are now fixed.
6889 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
6890 (previously it was 1024).
6893 *) Fix for compatibility mode trust settings: ignore trust settings
6894 unless some valid trust or reject settings are present.
6897 *) Fix for blowfish EVP: its a variable length cipher.
6900 *) Fix various bugs related to DSA S/MIME verification. Handle missing
6901 parameters in DSA public key structures and return an error in the
6902 DSA routines if parameters are absent.
6905 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
6906 in the current directory if neither $RANDFILE nor $HOME was set.
6907 RAND_file_name() in 0.9.6a returned NULL in this case. This has
6908 caused some confusion to Windows users who haven't defined $HOME.
6909 Thus RAND_file_name() is changed again: e_os.h can define a
6910 DEFAULT_HOME, which will be used if $HOME is not set.
6911 For Windows, we use "C:"; on other platforms, we still require
6912 environment variables.
6914 *) Move 'if (!initialized) RAND_poll()' into regions protected by
6915 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
6916 having multiple threads call RAND_poll() concurrently.
6919 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
6920 combination of a flag and a thread ID variable.
6921 Otherwise while one thread is in ssleay_rand_bytes (which sets the
6922 flag), *other* threads can enter ssleay_add_bytes without obeying
6923 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
6924 that they do not hold after the first thread unsets add_do_not_lock).
6927 *) Change bctest again: '-x' expressions are not available in all
6931 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
6933 *) Fix a couple of memory leaks in PKCS7_dataDecode()
6934 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
6936 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
6937 the default extension for executables, if any. Also, make the perl
6938 scripts that use symlink() to test if it really exists and use "cp"
6939 if it doesn't. All this made OpenSSL compilable and installable in
6943 *) Fix for asn1_GetSequence() for indefinite length constructed data.
6944 If SEQUENCE is length is indefinite just set c->slen to the total
6945 amount of data available.
6946 [Steve Henson, reported by shige@FreeBSD.org]
6947 [This change does not apply to 0.9.7.]
6949 *) Change bctest to avoid here-documents inside command substitution
6950 (workaround for FreeBSD /bin/sh bug).
6951 For compatibility with Ultrix, avoid shell functions (introduced
6952 in the bctest version that searches along $PATH).
6955 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
6956 with des_encrypt() defined on some operating systems, like Solaris
6960 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
6961 On the Importance of Eliminating Errors in Cryptographic
6962 Computations, J. Cryptology 14 (2001) 2, 101-119,
6963 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
6966 *) MIPS assembler BIGNUM division bug fix.
6969 *) Disabled incorrect Alpha assembler code.
6972 *) Fix PKCS#7 decode routines so they correctly update the length
6973 after reading an EOC for the EXPLICIT tag.
6975 [This change does not apply to 0.9.7.]
6977 *) Fix bug in PKCS#12 key generation routines. This was triggered
6978 if a 3DES key was generated with a 0 initial byte. Include
6979 PKCS12_BROKEN_KEYGEN compilation option to retain the old
6980 (but broken) behaviour.
6983 *) Enhance bctest to search for a working bc along $PATH and print
6985 [Tim Rice <tim@multitalents.net> via Richard Levitte]
6987 *) Fix memory leaks in err.c: free err_data string if necessary;
6988 don't write to the wrong index in ERR_set_error_data.
6991 *) Implement ssl23_peek (analogous to ssl23_read), which previously
6995 *) Replace rdtsc with _emit statements for VC++ version 5.
6996 [Jeremy Cooper <jeremy@baymoo.org>]
6998 *) Make it possible to reuse SSLv2 sessions.
7001 *) In copy_email() check for >= 0 as a return value for
7002 X509_NAME_get_index_by_NID() since 0 is a valid index.
7003 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
7005 *) Avoid coredump with unsupported or invalid public keys by checking if
7006 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
7007 PKCS7_verify() fails with non detached data.
7010 *) Don't use getenv in library functions when run as setuid/setgid.
7011 New function OPENSSL_issetugid().
7014 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
7015 due to incorrect handling of multi-threading:
7017 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
7019 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
7021 3. Count how many times MemCheck_off() has been called so that
7022 nested use can be treated correctly. This also avoids
7023 inband-signalling in the previous code (which relied on the
7024 assumption that thread ID 0 is impossible).
7027 *) Add "-rand" option also to s_client and s_server.
7030 *) Fix CPU detection on Irix 6.x.
7031 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
7032 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
7034 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
7037 [This change does not apply to 0.9.7.]
7039 *) Use the cached encoding of an X509_NAME structure rather than
7040 copying it. This is apparently the reason for the libsafe "errors"
7041 but the code is actually correct.
7044 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
7045 Bleichenbacher's DSA attack.
7046 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
7047 to be set and top=0 forces the highest bit to be set; top=-1 is new
7048 and leaves the highest bit random.
7049 [Ulf Moeller, Bodo Moeller]
7051 *) In the NCONF_...-based implementations for CONF_... queries
7052 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
7053 a temporary CONF structure with the data component set to NULL
7054 (which gives segmentation faults in lh_retrieve).
7055 Instead, use NULL for the CONF pointer in CONF_get_string and
7056 CONF_get_number (which may use environment variables) and directly
7057 return NULL from CONF_get_section.
7060 *) Fix potential buffer overrun for EBCDIC.
7063 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
7064 keyUsage if basicConstraints absent for a CA.
7067 *) Make SMIME_write_PKCS7() write mail header values with a format that
7068 is more generally accepted (no spaces before the semicolon), since
7069 some programs can't parse those values properly otherwise. Also make
7070 sure BIO's that break lines after each write do not create invalid
7074 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
7075 macros previously used would not encode an empty SEQUENCE OF
7076 and break the signature.
7078 [This change does not apply to 0.9.7.]
7080 *) Zero the premaster secret after deriving the master secret in
7084 *) Add some EVP_add_digest_alias registrations (as found in
7085 OpenSSL_add_all_digests()) to SSL_library_init()
7086 aka OpenSSL_add_ssl_algorithms(). This provides improved
7087 compatibility with peers using X.509 certificates
7088 with unconventional AlgorithmIdentifier OIDs.
7091 *) Fix for Irix with NO_ASM.
7092 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
7094 *) ./config script fixes.
7095 [Ulf Moeller, Richard Levitte]
7097 *) Fix 'openssl passwd -1'.
7100 *) Change PKCS12_key_gen_asc() so it can cope with non null
7101 terminated strings whose length is passed in the passlen
7102 parameter, for example from PEM callbacks. This was done
7103 by adding an extra length parameter to asc2uni().
7104 [Steve Henson, reported by <oddissey@samsung.co.kr>]
7106 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
7107 call failed, free the DSA structure.
7110 *) Fix to uni2asc() to cope with zero length Unicode strings.
7111 These are present in some PKCS#12 files.
7114 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
7115 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
7116 when writing a 32767 byte record.
7117 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
7119 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
7120 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
7122 (RSA objects have a reference count access to which is protected
7123 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
7124 so they are meant to be shared between threads.)
7125 [Bodo Moeller, Geoff Thorpe; original patch submitted by
7126 "Reddie, Steven" <Steven.Reddie@ca.com>]
7128 *) Fix a deadlock in CRYPTO_mem_leaks().
7131 *) Use better test patterns in bntest.
7134 *) rand_win.c fix for Borland C.
7137 *) BN_rshift bugfix for n == 0.
7140 *) Add a 'bctest' script that checks for some known 'bc' bugs
7141 so that 'make test' does not abort just because 'bc' is broken.
7144 *) Store verify_result within SSL_SESSION also for client side to
7145 avoid potential security hole. (Re-used sessions on the client side
7146 always resulted in verify_result==X509_V_OK, not using the original
7147 result of the server certificate verification.)
7150 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
7151 SSL3_RT_APPLICATION_DATA, return 0.
7152 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
7156 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
7157 releases, have been re-implemented by renaming the previous
7158 implementations of ssl2_read and ssl3_read to ssl2_read_internal
7159 and ssl3_read_internal, respectively, and adding 'peek' parameters
7160 to them. The new ssl[23]_{read,peek} functions are calls to
7161 ssl[23]_read_internal with the 'peek' flag set appropriately.
7162 A 'peek' parameter has also been added to ssl3_read_bytes, which
7163 does the actual work for ssl3_read_internal.
7166 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
7167 the method-specific "init()" handler. Also clean up ex_data after
7168 calling the method-specific "finish()" handler. Previously, this was
7169 happening the other way round.
7172 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
7173 The previous value, 12, was not always sufficient for BN_mod_exp().
7176 *) Make sure that shared libraries get the internal name engine with
7177 the full version number and not just 0. This should mark the
7178 shared libraries as not backward compatible. Of course, this should
7179 be changed again when we can guarantee backward binary compatibility.
7182 *) Fix typo in get_cert_by_subject() in by_dir.c
7183 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
7185 *) Rework the system to generate shared libraries:
7187 - Make note of the expected extension for the shared libraries and
7188 if there is a need for symbolic links from for example libcrypto.so.0
7189 to libcrypto.so.0.9.7. There is extended info in Configure for
7192 - Make as few rebuilds of the shared libraries as possible.
7194 - Still avoid linking the OpenSSL programs with the shared libraries.
7196 - When installing, install the shared libraries separately from the
7200 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
7202 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
7203 and not in SSL_clear because the latter is also used by the
7204 accept/connect functions; previously, the settings made by
7205 SSL_set_read_ahead would be lost during the handshake.
7206 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
7208 *) Correct util/mkdef.pl to be selective about disabled algorithms.
7209 Previously, it would create entries for disableed algorithms no
7213 *) Added several new manual pages for SSL_* function.
7216 Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
7218 *) In ssl23_get_client_hello, generate an error message when faced
7219 with an initial SSL 3.0/TLS record that is too small to contain the
7220 first two bytes of the ClientHello message, i.e. client_version.
7221 (Note that this is a pathologic case that probably has never happened
7222 in real life.) The previous approach was to use the version number
7223 from the record header as a substitute; but our protocol choice
7224 should not depend on that one because it is not authenticated
7225 by the Finished messages.
7228 *) More robust randomness gathering functions for Windows.
7229 [Jeffrey Altman <jaltman@columbia.edu>]
7231 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
7232 not set then we don't setup the error code for issuer check errors
7233 to avoid possibly overwriting other errors which the callback does
7234 handle. If an application does set the flag then we assume it knows
7235 what it is doing and can handle the new informational codes
7239 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
7240 a general "ANY" type, as such it should be able to decode anything
7241 including tagged types. However it didn't check the class so it would
7242 wrongly interpret tagged types in the same way as their universal
7243 counterpart and unknown types were just rejected. Changed so that the
7244 tagged and unknown types are handled in the same way as a SEQUENCE:
7245 that is the encoding is stored intact. There is also a new type
7246 "V_ASN1_OTHER" which is used when the class is not universal, in this
7247 case we have no idea what the actual type is so we just lump them all
7251 *) On VMS, stdout may very well lead to a file that is written to
7252 in a record-oriented fashion. That means that every write() will
7253 write a separate record, which will be read separately by the
7254 programs trying to read from it. This can be very confusing.
7256 The solution is to put a BIO filter in the way that will buffer
7257 text until a linefeed is reached, and then write everything a
7258 line at a time, so every record written will be an actual line,
7259 not chunks of lines and not (usually doesn't happen, but I've
7260 seen it once) several lines in one record. BIO_f_linebuffer() is
7263 Currently, it's a VMS-only method, because that's where it has
7264 been tested well enough.
7267 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
7268 it can return incorrect results.
7269 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
7270 but it was in 0.9.6-beta[12].)
7273 *) Disable the check for content being present when verifying detached
7274 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
7275 include zero length content when signing messages.
7278 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
7279 BIO_ctrl (for BIO pairs).
7282 *) Add DSO method for VMS.
7285 *) Bug fix: Montgomery multiplication could produce results with the
7289 *) Add RPM specification openssl.spec and modify it to build three
7290 packages. The default package contains applications, application
7291 documentation and run-time libraries. The devel package contains
7292 include files, static libraries and function documentation. The
7293 doc package contains the contents of the doc directory. The original
7294 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
7297 *) Add a large number of documentation files for many SSL routines.
7298 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
7300 *) Add a configuration entry for Sony News 4.
7301 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
7303 *) Don't set the two most significant bits to one when generating a
7304 random number < q in the DSA library.
7307 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
7308 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
7309 the underlying transport is blocking) if a handshake took place.
7310 (The default behaviour is needed by applications such as s_client
7311 and s_server that use select() to determine when to use SSL_read;
7312 but for applications that know in advance when to expect data, it
7313 just makes things more complicated.)
7316 *) Add RAND_egd_bytes(), which gives control over the number of bytes read
7320 *) Add a few more EBCDIC conditionals that make `req' and `x509'
7321 work better on such systems.
7322 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
7324 *) Add two demo programs for PKCS12_parse() and PKCS12_create().
7325 Update PKCS12_parse() so it copies the friendlyName and the
7326 keyid to the certificates aux info.
7329 *) Fix bug in PKCS7_verify() which caused an infinite loop
7330 if there was more than one signature.
7331 [Sven Uszpelkat <su@celocom.de>]
7333 *) Major change in util/mkdef.pl to include extra information
7334 about each symbol, as well as presentig variables as well
7335 as functions. This change means that there's n more need
7336 to rebuild the .num files when some algorithms are excluded.
7339 *) Allow the verify time to be set by an application,
7340 rather than always using the current time.
7343 *) Phase 2 verify code reorganisation. The certificate
7344 verify code now looks up an issuer certificate by a
7345 number of criteria: subject name, authority key id
7346 and key usage. It also verifies self signed certificates
7347 by the same criteria. The main comparison function is
7348 X509_check_issued() which performs these checks.
7350 Lot of changes were necessary in order to support this
7351 without completely rewriting the lookup code.
7353 Authority and subject key identifier are now cached.
7355 The LHASH 'certs' is X509_STORE has now been replaced
7356 by a STACK_OF(X509_OBJECT). This is mainly because an
7357 LHASH can't store or retrieve multiple objects with
7358 the same hash value.
7360 As a result various functions (which were all internal
7361 use only) have changed to handle the new X509_STORE
7362 structure. This will break anything that messed round
7363 with X509_STORE internally.
7365 The functions X509_STORE_add_cert() now checks for an
7366 exact match, rather than just subject name.
7368 The X509_STORE API doesn't directly support the retrieval
7369 of multiple certificates matching a given criteria, however
7370 this can be worked round by performing a lookup first
7371 (which will fill the cache with candidate certificates)
7372 and then examining the cache for matches. This is probably
7373 the best we can do without throwing out X509_LOOKUP
7374 entirely (maybe later...).
7376 The X509_VERIFY_CTX structure has been enhanced considerably.
7378 All certificate lookup operations now go via a get_issuer()
7379 callback. Although this currently uses an X509_STORE it
7380 can be replaced by custom lookups. This is a simple way
7381 to bypass the X509_STORE hackery necessary to make this
7382 work and makes it possible to use more efficient techniques
7383 in future. A very simple version which uses a simple
7384 STACK for its trusted certificate store is also provided
7385 using X509_STORE_CTX_trusted_stack().
7387 The verify_cb() and verify() callbacks now have equivalents
7388 in the X509_STORE_CTX structure.
7390 X509_STORE_CTX also has a 'flags' field which can be used
7391 to customise the verify behaviour.
7394 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
7395 excludes S/MIME capabilities.
7398 *) When a certificate request is read in keep a copy of the
7399 original encoding of the signed data and use it when outputing
7400 again. Signatures then use the original encoding rather than
7401 a decoded, encoded version which may cause problems if the
7402 request is improperly encoded.
7405 *) For consistency with other BIO_puts implementations, call
7406 buffer_write(b, ...) directly in buffer_puts instead of calling
7409 In BIO_puts, increment b->num_write as in BIO_write.
7410 [Peter.Sylvester@EdelWeb.fr]
7412 *) Fix BN_mul_word for the case where the word is 0. (We have to use
7413 BN_zero, we may not return a BIGNUM with an array consisting of
7417 *) Avoid calling abort() from within the library when problems are
7418 detected, except if preprocessor symbols have been defined
7419 (such as REF_CHECK, BN_DEBUG etc.).
7422 *) New openssl application 'rsautl'. This utility can be
7423 used for low level RSA operations. DER public key
7424 BIO/fp routines also added.
7427 *) New Configure entry and patches for compiling on QNX 4.
7428 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
7430 *) A demo state-machine implementation was sponsored by
7431 Nuron (http://www.nuron.com/) and is now available in
7432 demos/state_machine.
7435 *) New options added to the 'dgst' utility for signature
7436 generation and verification.
7439 *) Unrecognized PKCS#7 content types are now handled via a
7440 catch all ASN1_TYPE structure. This allows unsupported
7441 types to be stored as a "blob" and an application can
7442 encode and decode it manually.
7445 *) Fix various signed/unsigned issues to make a_strex.c
7447 [Oscar Jacobsson <oscar.jacobsson@celocom.com>]
7449 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
7450 length if passed a buffer. ASN1_INTEGER_to_BN failed
7451 if passed a NULL BN and its argument was negative.
7452 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
7454 *) Modification to PKCS#7 encoding routines to output definite
7455 length encoding. Since currently the whole structures are in
7456 memory there's not real point in using indefinite length
7457 constructed encoding. However if OpenSSL is compiled with
7458 the flag PKCS7_INDEFINITE_ENCODING the old form is used.
7461 *) Added BIO_vprintf() and BIO_vsnprintf().
7464 *) Added more prefixes to parse for in the the strings written
7465 through a logging bio, to cover all the levels that are available
7466 through syslog. The prefixes are now:
7468 PANIC, EMERG, EMR => LOG_EMERG
7469 ALERT, ALR => LOG_ALERT
7470 CRIT, CRI => LOG_CRIT
7471 ERROR, ERR => LOG_ERR
7472 WARNING, WARN, WAR => LOG_WARNING
7473 NOTICE, NOTE, NOT => LOG_NOTICE
7474 INFO, INF => LOG_INFO
7475 DEBUG, DBG => LOG_DEBUG
7477 and as before, if none of those prefixes are present at the
7478 beginning of the string, LOG_ERR is chosen.
7480 On Win32, the LOG_* levels are mapped according to this:
7482 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
7483 LOG_WARNING => EVENTLOG_WARNING_TYPE
7484 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
7488 *) Made it possible to reconfigure with just the configuration
7489 argument "reconf" or "reconfigure". The command line arguments
7490 are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
7491 and are retrieved from there when reconfiguring.
7495 [Assar Westerlund <assar@sics.se>, Richard Levitte]
7497 *) Add the arguments -CAfile and -CApath to the pkcs12 utility.
7500 *) The obj_dat.pl script was messing up the sorting of object
7501 names. The reason was that it compared the quoted version
7502 of strings as a result "OCSP" > "OCSP Signing" because
7503 " > SPACE. Changed script to store unquoted versions of
7504 names and add quotes on output. It was also omitting some
7505 names from the lookup table if they were given a default
7506 value (that is if SN is missing it is given the same
7507 value as LN and vice versa), these are now added on the
7508 grounds that if an object has a name we should be able to
7509 look it up. Finally added warning output when duplicate
7510 short or long names are found.
7513 *) Changes needed for Tandem NSK.
7514 [Scott Uroff <scott@xypro.com>]
7516 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
7517 RSA_padding_check_SSLv23(), special padding was never detected
7518 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
7519 version rollback attacks was not effective.
7521 In s23_clnt.c, don't use special rollback-attack detection padding
7522 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
7523 client; similarly, in s23_srvr.c, don't do the rollback check if
7524 SSL 2.0 is the only protocol enabled in the server.
7527 *) Make it possible to get hexdumps of unprintable data with 'openssl
7528 asn1parse'. By implication, the functions ASN1_parse_dump() and
7529 BIO_dump_indent() are added.
7532 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
7533 these print out strings and name structures based on various
7534 flags including RFC2253 support and proper handling of
7535 multibyte characters. Added options to the 'x509' utility
7536 to allow the various flags to be set.
7539 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
7540 Also change the functions X509_cmp_current_time() and
7541 X509_gmtime_adj() work with an ASN1_TIME structure,
7542 this will enable certificates using GeneralizedTime in validity
7543 dates to be checked.
7546 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid
7547 negative public key encodings) on by default,
7548 NO_NEG_PUBKEY_BUG can be set to disable it.
7551 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
7552 content octets. An i2c_ASN1_OBJECT is unnecessary because
7553 the encoding can be trivially obtained from the structure.
7556 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
7557 not read locks (CRYPTO_r_[un]lock).
7560 *) A first attempt at creating official support for shared
7561 libraries through configuration. I've kept it so the
7562 default is static libraries only, and the OpenSSL programs
7563 are always statically linked for now, but there are
7564 preparations for dynamic linking in place.
7565 This has been tested on Linux and Tru64.
7568 *) Randomness polling function for Win9x, as described in:
7569 Peter Gutmann, Software Generation of Practically Strong
7573 *) Fix so PRNG is seeded in req if using an already existing
7577 *) New options to smime application. -inform and -outform
7578 allow alternative formats for the S/MIME message including
7579 PEM and DER. The -content option allows the content to be
7580 specified separately. This should allow things like Netscape
7581 form signing output easier to verify.
7584 *) Fix the ASN1 encoding of tags using the 'long form'.
7587 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
7588 STRING types. These convert content octets to and from the
7589 underlying type. The actual tag and length octets are
7590 already assumed to have been read in and checked. These
7591 are needed because all other string types have virtually
7592 identical handling apart from the tag. By having versions
7593 of the ASN1 functions that just operate on content octets
7594 IMPLICIT tagging can be handled properly. It also allows
7595 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
7596 and ASN1_INTEGER are identical apart from the tag.
7599 *) Change the handling of OID objects as follows:
7601 - New object identifiers are inserted in objects.txt, following
7602 the syntax given in objects.README.
7603 - objects.pl is used to process obj_mac.num and create a new
7605 - obj_dat.pl is used to create a new obj_dat.h, using the data in
7608 This is currently kind of a hack, and the perl code in objects.pl
7609 isn't very elegant, but it works as I intended. The simplest way
7610 to check that it worked correctly is to look in obj_dat.h and
7611 check the array nid_objs and make sure the objects haven't moved
7612 around (this is important!). Additions are OK, as well as
7613 consistent name changes.
7616 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
7619 *) Addition of the command line parameter '-rand file' to 'openssl req'.
7620 The given file adds to whatever has already been seeded into the
7621 random pool through the RANDFILE configuration file option or
7622 environment variable, or the default random state file.
7625 *) mkstack.pl now sorts each macro group into lexical order.
7626 Previously the output order depended on the order the files
7627 appeared in the directory, resulting in needless rewriting
7631 *) Patches to make OpenSSL compile under Win32 again. Mostly
7632 work arounds for the VC++ problem that it treats func() as
7633 func(void). Also stripped out the parts of mkdef.pl that
7634 added extra typesafe functions: these no longer exist.
7637 *) Reorganisation of the stack code. The macros are now all
7638 collected in safestack.h . Each macro is defined in terms of
7639 a "stack macro" of the form SKM_<name>(type, a, b). The
7640 DEBUG_SAFESTACK is now handled in terms of function casts,
7641 this has the advantage of retaining type safety without the
7642 use of additional functions. If DEBUG_SAFESTACK is not defined
7643 then the non typesafe macros are used instead. Also modified the
7644 mkstack.pl script to handle the new form. Needs testing to see
7645 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
7646 the default if no major problems. Similar behaviour for ASN1_SET_OF
7647 and PKCS12_STACK_OF.
7650 *) When some versions of IIS use the 'NET' form of private key the
7651 key derivation algorithm is different. Normally MD5(password) is
7652 used as a 128 bit RC4 key. In the modified case
7653 MD5(MD5(password) + "SGCKEYSALT") is used insted. Added some
7654 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
7655 as the old Netscape_RSA functions except they have an additional
7656 'sgckey' parameter which uses the modified algorithm. Also added
7657 an -sgckey command line option to the rsa utility. Thanks to
7658 Adrian Peck <bertie@ncipher.com> for posting details of the modified
7659 algorithm to openssl-dev.
7662 *) The evp_local.h macros were using 'c.##kname' which resulted in
7663 invalid expansion on some systems (SCO 5.0.5 for example).
7664 Corrected to 'c.kname'.
7665 [Phillip Porch <root@theporch.com>]
7667 *) New X509_get1_email() and X509_REQ_get1_email() functions that return
7668 a STACK of email addresses from a certificate or request, these look
7669 in the subject name and the subject alternative name extensions and
7670 omit any duplicate addresses.
7673 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows.
7674 This makes DSA verification about 2 % faster.
7677 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
7678 (meaning that now 2^5 values will be precomputed, which is only 4 KB
7679 plus overhead for 1024 bit moduli).
7680 This makes exponentiations about 0.5 % faster for 1024 bit
7681 exponents (as measured by "openssl speed rsa2048").
7684 *) Rename memory handling macros to avoid conflicts with other
7686 Malloc => OPENSSL_malloc
7687 Malloc_locked => OPENSSL_malloc_locked
7688 Realloc => OPENSSL_realloc
7689 Free => OPENSSL_free
7692 *) New function BN_mod_exp_mont_word for small bases (roughly 15%
7693 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
7696 *) CygWin32 support.
7697 [John Jarvie <jjarvie@newsguy.com>]
7699 *) The type-safe stack code has been rejigged. It is now only compiled
7700 in when OpenSSL is configured with the DEBUG_SAFESTACK option and
7701 by default all type-specific stack functions are "#define"d back to
7702 standard stack functions. This results in more streamlined output
7703 but retains the type-safety checking possibilities of the original
7707 *) The STACK code has been cleaned up, and certain type declarations
7708 that didn't make a lot of sense have been brought in line. This has
7709 also involved a cleanup of sorts in safestack.h to more correctly
7710 map type-safe stack functions onto their plain stack counterparts.
7711 This work has also resulted in a variety of "const"ifications of
7712 lots of the code, especially "_cmp" operations which should normally
7713 be prototyped with "const" parameters anyway.
7716 *) When generating bytes for the first time in md_rand.c, 'stir the pool'
7717 by seeding with STATE_SIZE dummy bytes (with zero entropy count).
7718 (The PRNG state consists of two parts, the large pool 'state' and 'md',
7719 where all of 'md' is used each time the PRNG is used, but 'state'
7720 is used only indexed by a cyclic counter. As entropy may not be
7721 well distributed from the beginning, 'md' is important as a
7722 chaining variable. However, the output function chains only half
7723 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
7724 all of 'md', and seeding with STATE_SIZE dummy bytes will result
7725 in all of 'state' being rewritten, with the new values depending
7726 on virtually all of 'md'. This overcomes the 80 bit limitation.)
7729 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
7730 the handshake is continued after ssl_verify_cert_chain();
7731 otherwise, if SSL_VERIFY_NONE is set, remaining error codes
7732 can lead to 'unexplainable' connection aborts later.
7733 [Bodo Moeller; problem tracked down by Lutz Jaenicke]
7735 *) Major EVP API cipher revision.
7736 Add hooks for extra EVP features. This allows various cipher
7737 parameters to be set in the EVP interface. Support added for variable
7738 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
7739 setting of RC2 and RC5 parameters.
7741 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
7744 Remove lots of duplicated code from the EVP library. For example *every*
7745 cipher init() function handles the 'iv' in the same way according to the
7746 cipher mode. They also all do nothing if the 'key' parameter is NULL and
7747 for CFB and OFB modes they zero ctx->num.
7749 New functionality allows removal of S/MIME code RC2 hack.
7751 Most of the routines have the same form and so can be declared in terms
7754 By shifting this to the top level EVP_CipherInit() it can be removed from
7755 all individual ciphers. If the cipher wants to handle IVs or keys
7756 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
7759 Change lots of functions like EVP_EncryptUpdate() to now return a
7760 value: although software versions of the algorithms cannot fail
7761 any installed hardware versions can.
7764 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
7765 this option is set, tolerate broken clients that send the negotiated
7766 protocol version number instead of the requested protocol version
7770 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag;
7771 i.e. non-zero for export ciphersuites, zero otherwise.
7772 Previous versions had this flag inverted, inconsistent with
7773 rsa_tmp_cb (..._TMP_RSA_CB).
7774 [Bodo Moeller; problem reported by Amit Chopra]
7776 *) Add missing DSA library text string. Work around for some IIS
7777 key files with invalid SEQUENCE encoding.
7780 *) Add a document (doc/standards.txt) that list all kinds of standards
7781 and so on that are implemented in OpenSSL.
7784 *) Enhance c_rehash script. Old version would mishandle certificates
7785 with the same subject name hash and wouldn't handle CRLs at all.
7786 Added -fingerprint option to crl utility, to support new c_rehash
7790 *) Eliminate non-ANSI declarations in crypto.h and stack.h.
7793 *) Fix for SSL server purpose checking. Server checking was
7794 rejecting certificates which had extended key usage present
7795 but no ssl client purpose.
7796 [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>]
7798 *) Make PKCS#12 code work with no password. The PKCS#12 spec
7799 is a little unclear about how a blank password is handled.
7800 Since the password in encoded as a BMPString with terminating
7801 double NULL a zero length password would end up as just the
7802 double NULL. However no password at all is different and is
7803 handled differently in the PKCS#12 key generation code. NS
7804 treats a blank password as zero length. MSIE treats it as no
7805 password on export: but it will try both on import. We now do
7806 the same: PKCS12_parse() tries zero length and no password if
7807 the password is set to "" or NULL (NULL is now a valid password:
7808 it wasn't before) as does the pkcs12 application.
7811 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
7812 perror when PEM_read_bio_X509_REQ fails, the error message must
7813 be obtained from the error queue.
7816 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
7817 it in ERR_remove_state if appropriate, and change ERR_get_state
7818 accordingly to avoid race conditions (this is necessary because
7819 thread_hash is no longer constant once set).
7822 *) Bugfix for linux-elf makefile.one.
7825 *) RSA_get_default_method() will now cause a default
7826 RSA_METHOD to be chosen if one doesn't exist already.
7827 Previously this was only set during a call to RSA_new()
7828 or RSA_new_method(NULL) meaning it was possible for
7829 RSA_get_default_method() to return NULL.
7832 *) Added native name translation to the existing DSO code
7833 that will convert (if the flag to do so is set) filenames
7834 that are sufficiently small and have no path information
7835 into a canonical native form. Eg. "blah" converted to
7836 "libblah.so" or "blah.dll" etc.
7839 *) New function ERR_error_string_n(e, buf, len) which is like
7840 ERR_error_string(e, buf), but writes at most 'len' bytes
7841 including the 0 terminator. For ERR_error_string_n, 'buf'
7843 [Damien Miller <djm@mindrot.org>, Bodo Moeller]
7845 *) CONF library reworked to become more general. A new CONF
7846 configuration file reader "class" is implemented as well as a
7847 new functions (NCONF_*, for "New CONF") to handle it. The now
7848 old CONF_* functions are still there, but are reimplemented to
7849 work in terms of the new functions. Also, a set of functions
7850 to handle the internal storage of the configuration data is
7851 provided to make it easier to write new configuration file
7852 reader "classes" (I can definitely see something reading a
7853 configuration file in XML format, for example), called _CONF_*,
7854 or "the configuration storage API"...
7856 The new configuration file reading functions are:
7858 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
7859 NCONF_get_section, NCONF_get_string, NCONF_get_numbre
7861 NCONF_default, NCONF_WIN32
7863 NCONF_dump_fp, NCONF_dump_bio
7865 NCONF_default and NCONF_WIN32 are method (or "class") choosers,
7866 NCONF_new creates a new CONF object. This works in the same way
7867 as other interfaces in OpenSSL, like the BIO interface.
7868 NCONF_dump_* dump the internal storage of the configuration file,
7869 which is useful for debugging. All other functions take the same
7870 arguments as the old CONF_* functions wth the exception of the
7871 first that must be a `CONF *' instead of a `LHASH *'.
7873 To make it easer to use the new classes with the old CONF_* functions,
7874 the function CONF_set_default_method is provided.
7877 *) Add '-tls1' option to 'openssl ciphers', which was already
7878 mentioned in the documentation but had not been implemented.
7879 (This option is not yet really useful because even the additional
7880 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
7883 *) Initial DSO code added into libcrypto for letting OpenSSL (and
7884 OpenSSL-based applications) load shared libraries and bind to
7885 them in a portable way.
7886 [Geoff Thorpe, with contributions from Richard Levitte]
7888 Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
7890 *) Make sure _lrotl and _lrotr are only used with MSVC.
7892 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
7893 (the default implementation of RAND_status).
7895 *) Rename openssl x509 option '-crlext', which was added in 0.9.5,
7896 to '-clrext' (= clear extensions), as intended and documented.
7897 [Bodo Moeller; inconsistency pointed out by Michael Attili
7900 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length
7901 was larger than the MD block size.
7902 [Steve Henson, pointed out by Yost William <YostW@tce.com>]
7904 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
7905 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
7906 using the passed key: if the passed key was a private key the result
7907 of X509_print(), for example, would be to print out all the private key
7911 *) des_quad_cksum() byte order bug fix.
7912 [Ulf Möller, using the problem description in krb4-0.9.7, where
7913 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>]
7915 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
7917 [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>]
7919 *) For easily testing in shell scripts whether some command
7920 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
7921 returns with exit code 0 iff no command of the given name is available.
7922 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
7923 the output goes to stdout and nothing is printed to stderr.
7924 Additional arguments are always ignored.
7926 Since for each cipher there is a command of the same name,
7927 the 'no-cipher' compilation switches can be tested this way.
7929 ('openssl no-XXX' is not able to detect pseudo-commands such
7930 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
7933 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
7936 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
7937 is set; it will be thrown away anyway because each handshake creates
7939 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
7940 to parameters -- in previous versions (since OpenSSL 0.9.3) the
7941 'default key' from SSL_CTX_set_tmp_dh would always be lost, meanining
7942 you effectivly got SSL_OP_SINGLE_DH_USE when using this macro.
7945 *) New s_client option -ign_eof: EOF at stdin is ignored, and
7946 'Q' and 'R' lose their special meanings (quit/renegotiate).
7947 This is part of what -quiet does; unlike -quiet, -ign_eof
7948 does not suppress any output.
7951 *) Add compatibility options to the purpose and trust code. The
7952 purpose X509_PURPOSE_ANY is "any purpose" which automatically
7953 accepts a certificate or CA, this was the previous behaviour,
7954 with all the associated security issues.
7956 X509_TRUST_COMPAT is the old trust behaviour: only and
7957 automatically trust self signed roots in certificate store. A
7958 new trust setting X509_TRUST_DEFAULT is used to specify that
7959 a purpose has no associated trust setting and it should instead
7960 use the value in the default purpose.
7963 *) Fix the PKCS#8 DSA private key code so it decodes keys again
7964 and fix a memory leak.
7967 *) In util/mkerr.pl (which implements 'make errors'), preserve
7968 reason strings from the previous version of the .c file, as
7969 the default to have only downcase letters (and digits) in
7970 automatically generated reasons codes is not always appropriate.
7973 *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
7974 using strerror. Previously, ERR_reason_error_string() returned
7975 library names as reason strings for SYSerr; but SYSerr is a special
7976 case where small numbers are errno values, not library numbers.
7979 *) Add '-dsaparam' option to 'openssl dhparam' application. This
7980 converts DSA parameters into DH parameters. (When creating parameters,
7981 DSA_generate_parameters is used.)
7984 *) Include 'length' (recommended exponent length) in C code generated
7985 by 'openssl dhparam -C'.
7988 *) The second argument to set_label in perlasm was already being used
7989 so couldn't be used as a "file scope" flag. Moved to third argument
7993 *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
7994 instead of RAND_bytes for encryption IVs and salts.
7997 *) Include RAND_status() into RAND_METHOD instead of implementing
7998 it only for md_rand.c Otherwise replacing the PRNG by calling
7999 RAND_set_rand_method would be impossible.
8002 *) Don't let DSA_generate_key() enter an infinite loop if the random
8003 number generation fails.
8006 *) New 'rand' application for creating pseudo-random output.
8009 *) Added configuration support for Linux/IA64
8010 [Rolf Haberrecker <rolf@suse.de>]
8012 *) Assembler module support for Mingw32.
8015 *) Shared library support for HPUX (in shlib/).
8016 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous]
8018 *) Shared library support for Solaris gcc.
8019 [Lutz Behnke <behnke@trustcenter.de>]
8021 Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
8023 *) PKCS7_encrypt() was adding text MIME headers twice because they
8024 were added manually and by SMIME_crlf_copy().
8027 *) In bntest.c don't call BN_rand with zero bits argument.
8028 [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>]
8030 *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
8031 case was implemented. This caused BN_div_recp() to fail occasionally.
8034 *) Add an optional second argument to the set_label() in the perl
8035 assembly language builder. If this argument exists and is set
8036 to 1 it signals that the assembler should use a symbol whose
8037 scope is the entire file, not just the current function. This
8038 is needed with MASM which uses the format label:: for this scope.
8039 [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>]
8041 *) Change the ASN1 types so they are typedefs by default. Before
8042 almost all types were #define'd to ASN1_STRING which was causing
8043 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
8047 *) Change names of new functions to the new get1/get0 naming
8048 convention: After 'get1', the caller owns a reference count
8049 and has to call ..._free; 'get0' returns a pointer to some
8050 data structure without incrementing reference counters.
8051 (Some of the existing 'get' functions increment a reference
8052 counter, some don't.)
8053 Similarly, 'set1' and 'add1' functions increase reference
8054 counters or duplicate objects.
8057 *) Allow for the possibility of temp RSA key generation failure:
8058 the code used to assume it always worked and crashed on failure.
8061 *) Fix potential buffer overrun problem in BIO_printf().
8062 [Ulf Möller, using public domain code by Patrick Powell; problem
8063 pointed out by David Sacerdote <das33@cornell.edu>]
8065 *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions
8066 RAND_egd() and RAND_status(). In the command line application,
8067 the EGD socket can be specified like a seed file using RANDFILE
8071 *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
8072 Some CAs (e.g. Verisign) distribute certificates in this form.
8075 *) Remove the SSL_ALLOW_ADH compile option and set the default cipher
8076 list to exclude them. This means that no special compilation option
8077 is needed to use anonymous DH: it just needs to be included in the
8081 *) Change the EVP_MD_CTX_type macro so its meaning consistent with
8082 EVP_MD_type. The old functionality is available in a new macro called
8083 EVP_MD_md(). Change code that uses it and update docs.
8086 *) ..._ctrl functions now have corresponding ..._callback_ctrl functions
8087 where the 'void *' argument is replaced by a function pointer argument.
8088 Previously 'void *' was abused to point to functions, which works on
8089 many platforms, but is not correct. As these functions are usually
8090 called by macros defined in OpenSSL header files, most source code
8091 should work without changes.
8094 *) <openssl/opensslconf.h> (which is created by Configure) now contains
8095 sections with information on -D... compiler switches used for
8096 compiling the library so that applications can see them. To enable
8097 one of these sections, a pre-processor symbol OPENSSL_..._DEFINES
8098 must be defined. E.g.,
8099 #define OPENSSL_ALGORITHM_DEFINES
8100 #include <openssl/opensslconf.h>
8101 defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc.
8102 [Richard Levitte, Ulf and Bodo Möller]
8104 *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
8108 *) Change the 'other' type in certificate aux info to a STACK_OF
8109 X509_ALGOR. Although not an AlgorithmIdentifier as such it has
8110 the required ASN1 format: arbitrary types determined by an OID.
8113 *) Add some PEM_write_X509_REQ_NEW() functions and a command line
8114 argument to 'req'. This is not because the function is newer or
8115 better than others it just uses the work 'NEW' in the certificate
8116 request header lines. Some software needs this.
8119 *) Reorganise password command line arguments: now passwords can be
8120 obtained from various sources. Delete the PEM_cb function and make
8121 it the default behaviour: i.e. if the callback is NULL and the
8122 usrdata argument is not NULL interpret it as a null terminated pass
8123 phrase. If usrdata and the callback are NULL then the pass phrase
8124 is prompted for as usual.
8127 *) Add support for the Compaq Atalla crypto accelerator. If it is installed,
8128 the support is automatically enabled. The resulting binaries will
8129 autodetect the card and use it if present.
8130 [Ben Laurie and Compaq Inc.]
8132 *) Work around for Netscape hang bug. This sends certificate request
8133 and server done in one record. Since this is perfectly legal in the
8134 SSL/TLS protocol it isn't a "bug" option and is on by default. See
8135 the bugs/SSLv3 entry for more info.
8138 *) HP-UX tune-up: new unified configs, HP C compiler bug workaround.
8141 *) Add -rand argument to smime and pkcs12 applications and read/write
8145 *) New 'passwd' tool for crypt(3) and apr1 password hashes.
8148 *) Add command line password options to the remaining applications.
8151 *) Bug fix for BN_div_recp() for numerators with an even number of
8155 *) More tests in bntest.c, and changed test_bn output.
8158 *) ./config recognizes MacOS X now.
8161 *) Bug fix for BN_div() when the first words of num and divsor are
8162 equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0).
8165 *) Add support for various broken PKCS#8 formats, and command line
8166 options to produce them.
8169 *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
8170 get temporary BIGNUMs from a BN_CTX.
8173 *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
8177 *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and
8178 include a #define from the old name to the new. The original intent
8179 was that statically linked binaries could for example just call
8180 SSLeay_add_all_ciphers() to just add ciphers to the table and not
8181 link with digests. This never worked becayse SSLeay_add_all_digests()
8182 and SSLeay_add_all_ciphers() were in the same source file so calling
8183 one would link with the other. They are now in separate source files.
8186 *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
8189 *) Use a less unusual form of the Miller-Rabin primality test (it used
8190 a binary algorithm for exponentiation integrated into the Miller-Rabin
8191 loop, our standard modexp algorithms are faster).
8194 *) Support for the EBCDIC character set completed.
8195 [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>]
8197 *) Source code cleanups: use const where appropriate, eliminate casts,
8198 use void * instead of char * in lhash.
8201 *) Bugfix: ssl3_send_server_key_exchange was not restartable
8202 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
8203 this the server could overwrite ephemeral keys that the client
8207 *) Turn DSA_is_prime into a macro that calls BN_is_prime,
8208 using 50 iterations of the Rabin-Miller test.
8210 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
8211 iterations of the Rabin-Miller test as required by the appendix
8212 to FIPS PUB 186[-1]) instead of DSA_is_prime.
8213 As BN_is_prime_fasttest includes trial division, DSA parameter
8214 generation becomes much faster.
8216 This implies a change for the callback functions in DSA_is_prime
8217 and DSA_generate_parameters: The callback function is called once
8218 for each positive witness in the Rabin-Miller test, not just
8219 occasionally in the inner loop; and the parameters to the
8220 callback function now provide an iteration count for the outer
8221 loop rather than for the current invocation of the inner loop.
8222 DSA_generate_parameters additionally can call the callback
8223 function with an 'iteration count' of -1, meaning that a
8224 candidate has passed the trial division test (when q is generated
8225 from an application-provided seed, trial division is skipped).
8228 *) New function BN_is_prime_fasttest that optionally does trial
8229 division before starting the Rabin-Miller test and has
8230 an additional BN_CTX * argument (whereas BN_is_prime always
8231 has to allocate at least one BN_CTX).
8232 'callback(1, -1, cb_arg)' is called when a number has passed the
8233 trial division stage.
8236 *) Fix for bug in CRL encoding. The validity dates weren't being handled
8240 *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
8243 *) New function BN_pseudo_rand().
8246 *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
8247 bignum version of BN_from_montgomery() with the working code from
8248 SSLeay 0.9.0 (the word based version is faster anyway), and clean up
8252 *) Avoid a race condition in s2_clnt.c (function get_server_hello) that
8253 made it impossible to use the same SSL_SESSION data structure in
8254 SSL2 clients in multiple threads.
8257 *) The return value of RAND_load_file() no longer counts bytes obtained
8258 by stat(). RAND_load_file(..., -1) is new and uses the complete file
8259 to seed the PRNG (previously an explicit byte count was required).
8260 [Ulf Möller, Bodo Möller]
8262 *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
8263 used (char *) instead of (void *) and had casts all over the place.
8266 *) Make BN_generate_prime() return NULL on error if ret!=NULL.
8269 *) Retain source code compatibility for BN_prime_checks macro:
8270 BN_is_prime(..., BN_prime_checks, ...) now uses
8271 BN_prime_checks_for_size to determine the appropriate number of
8272 Rabin-Miller iterations.
8275 *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
8276 DH_CHECK_P_NOT_SAFE_PRIME.
8277 (Check if this is true? OpenPGP calls them "strong".)
8280 *) Merge the functionality of "dh" and "gendh" programs into a new program
8281 "dhparam". The old programs are retained for now but will handle DH keys
8282 (instead of parameters) in future.
8285 *) Make the ciphers, s_server and s_client programs check the return values
8286 when a new cipher list is set.
8289 *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
8290 ciphers. Before when the 56bit ciphers were enabled the sorting was
8293 The syntax for the cipher sorting has been extended to support sorting by
8294 cipher-strength (using the strength_bits hard coded in the tables).
8295 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
8297 Fix a bug in the cipher-command parser: when supplying a cipher command
8298 string with an "undefined" symbol (neither command nor alphanumeric
8299 [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now
8300 an error is flagged.
8302 Due to the strength-sorting extension, the code of the
8303 ssl_create_cipher_list() function was completely rearranged. I hope that
8304 the readability was also increased :-)
8305 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
8307 *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1
8308 for the first serial number and places 2 in the serial number file. This
8309 avoids problems when the root CA is created with serial number zero and
8310 the first user certificate has the same issuer name and serial number
8314 *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
8315 the new code. Add documentation for this stuff.
8318 *) Changes to X509_ATTRIBUTE utilities. These have been renamed from
8319 X509_*() to X509at_*() on the grounds that they don't handle X509
8320 structures and behave in an analagous way to the X509v3 functions:
8321 they shouldn't be called directly but wrapper functions should be used
8324 So we also now have some wrapper functions that call the X509at functions
8325 when passed certificate requests. (TO DO: similar things can be done with
8326 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
8327 things. Some of these need some d2i or i2d and print functionality
8328 because they handle more complex structures.)
8331 *) Add missing #ifndefs that caused missing symbols when building libssl
8332 as a shared library without RSA. Use #ifndef NO_SSL2 instead of
8333 NO_RSA in ssl/s2*.c.
8334 [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller]
8336 *) Precautions against using the PRNG uninitialized: RAND_bytes() now
8337 has a return value which indicates the quality of the random data
8338 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
8339 error queue. New function RAND_pseudo_bytes() generates output that is
8340 guaranteed to be unique but not unpredictable. RAND_add is like
8341 RAND_seed, but takes an extra argument for an entropy estimate
8342 (RAND_seed always assumes full entropy).
8345 *) Do more iterations of Rabin-Miller probable prime test (specifically,
8346 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
8347 instead of only 2 for all lengths; see BN_prime_checks_for_size definition
8348 in crypto/bn/bn_prime.c for the complete table). This guarantees a
8349 false-positive rate of at most 2^-80 for random input.
8352 *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
8355 *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
8356 in the 0.9.5 release), this returns the chain
8357 from an X509_CTX structure with a dup of the stack and all
8358 the X509 reference counts upped: so the stack will exist
8359 after X509_CTX_cleanup() has been called. Modify pkcs12.c
8362 Also make SSL_SESSION_print() print out the verify return
8366 *) Add manpage for the pkcs12 command. Also change the default
8367 behaviour so MAC iteration counts are used unless the new
8368 -nomaciter option is used. This improves file security and
8369 only older versions of MSIE (4.0 for example) need it.
8372 *) Honor the no-xxx Configure options when creating .DEF files.
8375 *) Add PKCS#10 attributes to field table: challengePassword,
8376 unstructuredName and unstructuredAddress. These are taken from
8377 draft PKCS#9 v2.0 but are compatible with v1.2 provided no
8378 international characters are used.
8380 More changes to X509_ATTRIBUTE code: allow the setting of types
8381 based on strings. Remove the 'loc' parameter when adding
8382 attributes because these will be a SET OF encoding which is sorted
8386 *) Initial changes to the 'req' utility to allow request generation
8387 automation. This will allow an application to just generate a template
8388 file containing all the field values and have req construct the
8391 Initial support for X509_ATTRIBUTE handling. Stacks of these are
8392 used all over the place including certificate requests and PKCS#7
8393 structures. They are currently handled manually where necessary with
8394 some primitive wrappers for PKCS#7. The new functions behave in a
8395 manner analogous to the X509 extension functions: they allow
8396 attributes to be looked up by NID and added.
8398 Later something similar to the X509V3 code would be desirable to
8399 automatically handle the encoding, decoding and printing of the
8400 more complex types. The string types like challengePassword can
8401 be handled by the string table functions.
8403 Also modified the multi byte string table handling. Now there is
8404 a 'global mask' which masks out certain types. The table itself
8405 can use the flag STABLE_NO_MASK to ignore the mask setting: this
8406 is useful when for example there is only one permissible type
8407 (as in countryName) and using the mask might result in no valid
8411 *) Clean up 'Finished' handling, and add functions SSL_get_finished and
8412 SSL_get_peer_finished to allow applications to obtain the latest
8413 Finished messages sent to the peer or expected from the peer,
8414 respectively. (SSL_get_peer_finished is usually the Finished message
8415 actually received from the peer, otherwise the protocol will be aborted.)
8417 As the Finished message are message digests of the complete handshake
8418 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
8419 be used for external authentication procedures when the authentication
8420 provided by SSL/TLS is not desired or is not enough.
8423 *) Enhanced support for Alpha Linux is added. Now ./config checks if
8424 the host supports BWX extension and if Compaq C is present on the
8425 $PATH. Just exploiting of the BWX extension results in 20-30%
8426 performance kick for some algorithms, e.g. DES and RC4 to mention
8427 a couple. Compaq C in turn generates ~20% faster code for MD5 and
8431 *) Add support for MS "fast SGC". This is arguably a violation of the
8432 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
8433 weak crypto and after checking the certificate is SGC a second one
8434 with strong crypto. MS SGC stops the first handshake after receiving
8435 the server certificate message and sends a second client hello. Since
8436 a server will typically do all the time consuming operations before
8437 expecting any further messages from the client (server key exchange
8438 is the most expensive) there is little difference between the two.
8440 To get OpenSSL to support MS SGC we have to permit a second client
8441 hello message after we have sent server done. In addition we have to
8442 reset the MAC if we do get this second client hello.
8445 *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide
8446 if a DER encoded private key is RSA or DSA traditional format. Changed
8447 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
8448 format DER encoded private key. Newer code should use PKCS#8 format which
8449 has the key type encoded in the ASN1 structure. Added DER private key
8450 support to pkcs8 application.
8453 *) SSL 3/TLS 1 servers now don't request certificates when an anonymous
8454 ciphersuites has been selected (as required by the SSL 3/TLS 1
8455 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
8456 is set, we interpret this as a request to violate the specification
8457 (the worst that can happen is a handshake failure, and 'correct'
8458 behaviour would result in a handshake failure anyway).
8461 *) In SSL_CTX_add_session, take into account that there might be multiple
8462 SSL_SESSION structures with the same session ID (e.g. when two threads
8463 concurrently obtain them from an external cache).
8464 The internal cache can handle only one SSL_SESSION with a given ID,
8465 so if there's a conflict, we now throw out the old one to achieve
8469 *) Add OIDs for idea and blowfish in CBC mode. This will allow both
8470 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
8471 some routines that use cipher OIDs: some ciphers do not have OIDs
8472 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
8476 *) Simplify the trust setting structure and code. Now we just have
8477 two sequences of OIDs for trusted and rejected settings. These will
8478 typically have values the same as the extended key usage extension
8479 and any application specific purposes.
8481 The trust checking code now has a default behaviour: it will just
8482 check for an object with the same NID as the passed id. Functions can
8483 be provided to override either the default behaviour or the behaviour
8484 for a given id. SSL client, server and email already have functions
8485 in place for compatibility: they check the NID and also return "trusted"
8486 if the certificate is self signed.
8489 *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the
8490 traditional format into an EVP_PKEY structure.
8493 *) Add a password callback function PEM_cb() which either prompts for
8494 a password if usr_data is NULL or otherwise assumes it is a null
8495 terminated password. Allow passwords to be passed on command line
8496 environment or config files in a few more utilities.
8499 *) Add a bunch of DER and PEM functions to handle PKCS#8 format private
8500 keys. Add some short names for PKCS#8 PBE algorithms and allow them
8501 to be specified on the command line for the pkcs8 and pkcs12 utilities.
8502 Update documentation.
8505 *) Support for ASN1 "NULL" type. This could be handled before by using
8506 ASN1_TYPE but there wasn't any function that would try to read a NULL
8507 and produce an error if it couldn't. For compatibility we also have
8508 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
8509 don't allocate anything because they don't need to.
8512 *) Initial support for MacOS is now provided. Examine INSTALL.MacOS
8514 [Andy Polyakov, Roy Woods <roy@centicsystems.ca>]
8516 *) Rebuild of the memory allocation routines used by OpenSSL code and
8517 possibly others as well. The purpose is to make an interface that
8518 provide hooks so anyone can build a separate set of allocation and
8519 deallocation routines to be used by OpenSSL, for example memory
8520 pool implementations, or something else, which was previously hard
8521 since Malloc(), Realloc() and Free() were defined as macros having
8522 the values malloc, realloc and free, respectively (except for Win32
8523 compilations). The same is provided for memory debugging code.
8524 OpenSSL already comes with functionality to find memory leaks, but
8525 this gives people a chance to debug other memory problems.
8527 With these changes, a new set of functions and macros have appeared:
8529 CRYPTO_set_mem_debug_functions() [F]
8530 CRYPTO_get_mem_debug_functions() [F]
8531 CRYPTO_dbg_set_options() [F]
8532 CRYPTO_dbg_get_options() [F]
8533 CRYPTO_malloc_debug_init() [M]
8535 The memory debug functions are NULL by default, unless the library
8536 is compiled with CRYPTO_MDEBUG or friends is defined. If someone
8537 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
8538 gives the standard debugging functions that come with OpenSSL) or
8539 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
8540 provided by the library user) must be used. When the standard
8541 debugging functions are used, CRYPTO_dbg_set_options can be used to
8542 request additional information:
8543 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
8544 the CRYPTO_MDEBUG_xxx macro when compiling the library.
8546 Also, things like CRYPTO_set_mem_functions will always give the
8547 expected result (the new set of functions is used for allocation
8548 and deallocation) at all times, regardless of platform and compiler
8551 To finish it up, some functions that were never use in any other
8552 way than through macros have a new API and new semantic:
8555 CRYPTO_dbg_realloc()
8558 All macros of value have retained their old syntax.
8559 [Richard Levitte and Bodo Moeller]
8561 *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
8562 ordering of SMIMECapabilities wasn't in "strength order" and there
8563 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
8567 *) Some ASN1 types with illegal zero length encoding (INTEGER,
8568 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
8569 [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson]
8571 *) Merge in my S/MIME library for OpenSSL. This provides a simple
8572 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
8573 functionality to handle multipart/signed properly) and a utility
8574 called 'smime' to call all this stuff. This is based on code I
8575 originally wrote for Celo who have kindly allowed it to be
8576 included in OpenSSL.
8579 *) Add variants des_set_key_checked and des_set_key_unchecked of
8580 des_set_key (aka des_key_sched). Global variable des_check_key
8581 decides which of these is called by des_set_key; this way
8582 des_check_key behaves as it always did, but applications and
8583 the library itself, which was buggy for des_check_key == 1,
8584 have a cleaner way to pick the version they need.
8587 *) New function PKCS12_newpass() which changes the password of a
8591 *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and
8592 dynamic mix. In both cases the ids can be used as an index into the
8593 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
8594 functions so they accept a list of the field values and the
8595 application doesn't need to directly manipulate the X509_TRUST
8599 *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
8603 *) Modify the way the V3 extension code looks up extensions. This now
8604 works in a similar way to the object code: we have some "standard"
8605 extensions in a static table which is searched with OBJ_bsearch()
8606 and the application can add dynamic ones if needed. The file
8607 crypto/x509v3/ext_dat.h now has the info: this file needs to be
8608 updated whenever a new extension is added to the core code and kept
8609 in ext_nid order. There is a simple program 'tabtest.c' which checks
8610 this. New extensions are not added too often so this file can readily
8611 be maintained manually.
8613 There are two big advantages in doing things this way. The extensions
8614 can be looked up immediately and no longer need to be "added" using
8615 X509V3_add_standard_extensions(): this function now does nothing.
8616 [Side note: I get *lots* of email saying the extension code doesn't
8617 work because people forget to call this function]
8618 Also no dynamic allocation is done unless new extensions are added:
8619 so if we don't add custom extensions there is no need to call
8620 X509V3_EXT_cleanup().
8623 *) Modify enc utility's salting as follows: make salting the default. Add a
8624 magic header, so unsalted files fail gracefully instead of just decrypting
8625 to garbage. This is because not salting is a big security hole, so people
8626 should be discouraged from doing it.
8629 *) Fixes and enhancements to the 'x509' utility. It allowed a message
8630 digest to be passed on the command line but it only used this
8631 parameter when signing a certificate. Modified so all relevant
8632 operations are affected by the digest parameter including the
8633 -fingerprint and -x509toreq options. Also -x509toreq choked if a
8634 DSA key was used because it didn't fix the digest.
8637 *) Initial certificate chain verify code. Currently tests the untrusted
8638 certificates for consistency with the verify purpose (which is set
8639 when the X509_STORE_CTX structure is set up) and checks the pathlength.
8641 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
8642 this is because it will reject chains with invalid extensions whereas
8643 every previous version of OpenSSL and SSLeay made no checks at all.
8645 Trust code: checks the root CA for the relevant trust settings. Trust
8646 settings have an initial value consistent with the verify purpose: e.g.
8647 if the verify purpose is for SSL client use it expects the CA to be
8648 trusted for SSL client use. However the default value can be changed to
8649 permit custom trust settings: one example of this would be to only trust
8650 certificates from a specific "secure" set of CAs.
8652 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
8653 which should be used for version portability: especially since the
8654 verify structure is likely to change more often now.
8656 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
8657 to set them. If not set then assume SSL clients will verify SSL servers
8660 Two new options to the verify program: -untrusted allows a set of
8661 untrusted certificates to be passed in and -purpose which sets the
8662 intended purpose of the certificate. If a purpose is set then the
8663 new chain verify code is used to check extension consistency.
8666 *) Support for the authority information access extension.
8669 *) Modify RSA and DSA PEM read routines to transparently handle
8670 PKCS#8 format private keys. New *_PUBKEY_* functions that handle
8671 public keys in a format compatible with certificate
8672 SubjectPublicKeyInfo structures. Unfortunately there were already
8673 functions called *_PublicKey_* which used various odd formats so
8674 these are retained for compatibility: however the DSA variants were
8675 never in a public release so they have been deleted. Changed dsa/rsa
8676 utilities to handle the new format: note no releases ever handled public
8677 keys so we should be OK.
8679 The primary motivation for this change is to avoid the same fiasco
8680 that dogs private keys: there are several incompatible private key
8681 formats some of which are standard and some OpenSSL specific and
8682 require various evil hacks to allow partial transparent handling and
8683 even then it doesn't work with DER formats. Given the option anything
8684 other than PKCS#8 should be dumped: but the other formats have to
8685 stay in the name of compatibility.
8687 With public keys and the benefit of hindsight one standard format
8688 is used which works with EVP_PKEY, RSA or DSA structures: though
8689 it clearly returns an error if you try to read the wrong kind of key.
8691 Added a -pubkey option to the 'x509' utility to output the public key.
8692 Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*()
8693 (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add
8694 EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*())
8695 that do the same as the EVP_PKEY_assign_*() except they up the
8696 reference count of the added key (they don't "swallow" the
8700 *) Fixes to crypto/x509/by_file.c the code to read in certificates and
8701 CRLs would fail if the file contained no certificates or no CRLs:
8702 added a new function to read in both types and return the number
8703 read: this means that if none are read it will be an error. The
8704 DER versions of the certificate and CRL reader would always fail
8705 because it isn't possible to mix certificates and CRLs in DER format
8706 without choking one or the other routine. Changed this to just read
8707 a certificate: this is the best we can do. Also modified the code
8708 in apps/verify.c to take notice of return codes: it was previously
8709 attempting to read in certificates from NULL pointers and ignoring
8710 any errors: this is one reason why the cert and CRL reader seemed
8711 to work. It doesn't check return codes from the default certificate
8712 routines: these may well fail if the certificates aren't installed.
8715 *) Code to support otherName option in GeneralName.
8718 *) First update to verify code. Change the verify utility
8719 so it warns if it is passed a self signed certificate:
8720 for consistency with the normal behaviour. X509_verify
8721 has been modified to it will now verify a self signed
8722 certificate if *exactly* the same certificate appears
8723 in the store: it was previously impossible to trust a
8724 single self signed certificate. This means that:
8725 openssl verify ss.pem
8726 now gives a warning about a self signed certificate but
8727 openssl verify -CAfile ss.pem ss.pem
8731 *) For servers, store verify_result in SSL_SESSION data structure
8732 (and add it to external session representation).
8733 This is needed when client certificate verifications fails,
8734 but an application-provided verification callback (set by
8735 SSL_CTX_set_cert_verify_callback) allows accepting the session
8736 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
8737 but returns 1): When the session is reused, we have to set
8738 ssl->verify_result to the appropriate error code to avoid
8740 [Bodo Moeller, problem pointed out by Lutz Jaenicke]
8742 *) Fix a bug in the new PKCS#7 code: it didn't consider the
8743 case in PKCS7_dataInit() where the signed PKCS7 structure
8744 didn't contain any existing data because it was being created.
8745 [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson]
8747 *) Add a salt to the key derivation routines in enc.c. This
8748 forms the first 8 bytes of the encrypted file. Also add a
8749 -S option to allow a salt to be input on the command line.
8752 *) New function X509_cmp(). Oddly enough there wasn't a function
8753 to compare two certificates. We do this by working out the SHA1
8754 hash and comparing that. X509_cmp() will be needed by the trust
8758 *) SSL_get1_session() is like SSL_get_session(), but increments
8759 the reference count in the SSL_SESSION returned.
8760 [Geoff Thorpe <geoff@eu.c2.net>]
8762 *) Fix for 'req': it was adding a null to request attributes.
8763 Also change the X509_LOOKUP and X509_INFO code to handle
8764 certificate auxiliary information.
8767 *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document
8771 *) Add the possibility to add extra information to the memory leak
8772 detecting output, to form tracebacks, showing from where each
8773 allocation was originated: CRYPTO_push_info("constant string") adds
8774 the string plus current file name and line number to a per-thread
8775 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
8776 is like calling CYRPTO_pop_info() until the stack is empty.
8777 Also updated memory leak detection code to be multi-thread-safe.
8780 *) Add options -text and -noout to pkcs7 utility and delete the
8781 encryption options which never did anything. Update docs.
8784 *) Add options to some of the utilities to allow the pass phrase
8785 to be included on either the command line (not recommended on
8786 OSes like Unix) or read from the environment. Update the
8787 manpages and fix a few bugs.
8790 *) Add a few manpages for some of the openssl commands.
8793 *) Fix the -revoke option in ca. It was freeing up memory twice,
8794 leaking and not finding already revoked certificates.
8797 *) Extensive changes to support certificate auxiliary information.
8798 This involves the use of X509_CERT_AUX structure and X509_AUX
8799 functions. An X509_AUX function such as PEM_read_X509_AUX()
8800 can still read in a certificate file in the usual way but it
8801 will also read in any additional "auxiliary information". By
8802 doing things this way a fair degree of compatibility can be
8803 retained: existing certificates can have this information added
8804 using the new 'x509' options.
8806 Current auxiliary information includes an "alias" and some trust
8807 settings. The trust settings will ultimately be used in enhanced
8808 certificate chain verification routines: currently a certificate
8809 can only be trusted if it is self signed and then it is trusted
8813 *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD).
8814 The problem was that one of the replacement routines had not been working
8815 since SSLeay releases. For now the offending routine has been replaced
8816 with non-optimised assembler. Even so, this now gives around 95%
8817 performance improvement for 1024 bit RSA signs.
8820 *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2
8821 handling. Most clients have the effective key size in bits equal to
8822 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
8823 A few however don't do this and instead use the size of the decrypted key
8824 to determine the RC2 key length and the AlgorithmIdentifier to determine
8825 the effective key length. In this case the effective key length can still
8826 be 40 bits but the key length can be 168 bits for example. This is fixed
8827 by manually forcing an RC2 key into the EVP_PKEY structure because the
8828 EVP code can't currently handle unusual RC2 key sizes: it always assumes
8829 the key length and effective key length are equal.
8832 *) Add a bunch of functions that should simplify the creation of
8833 X509_NAME structures. Now you should be able to do:
8834 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
8835 and have it automatically work out the correct field type and fill in
8836 the structures. The more adventurous can try:
8837 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
8838 and it will (hopefully) work out the correct multibyte encoding.
8841 *) Change the 'req' utility to use the new field handling and multibyte
8842 copy routines. Before the DN field creation was handled in an ad hoc
8843 way in req, ca, and x509 which was rather broken and didn't support
8844 BMPStrings or UTF8Strings. Since some software doesn't implement
8845 BMPStrings or UTF8Strings yet, they can be enabled using the config file
8846 using the dirstring_type option. See the new comment in the default
8847 openssl.cnf for more info.
8850 *) Make crypto/rand/md_rand.c more robust:
8851 - Assure unique random numbers after fork().
8852 - Make sure that concurrent threads access the global counter and
8853 md serializably so that we never lose entropy in them
8854 or use exactly the same state in multiple threads.
8855 Access to the large state is not always serializable because
8856 the additional locking could be a performance killer, and
8857 md should be large enough anyway.
8860 *) New file apps/app_rand.c with commonly needed functionality
8861 for handling the random seed file.
8863 Use the random seed file in some applications that previously did not:
8865 dsaparam -genkey (which also ignored its '-rand' option),
8868 x509 (when signing).
8869 Except on systems with /dev/urandom, it is crucial to have a random
8870 seed file at least for key creation, DSA signing, and for DH exchanges;
8871 for RSA signatures we could do without one.
8873 gendh and gendsa (unlike genrsa) used to read only the first byte
8874 of each file listed in the '-rand' option. The function as previously
8875 found in genrsa is now in app_rand.c and is used by all programs
8876 that support '-rand'.
8879 *) In RAND_write_file, use mode 0600 for creating files;
8880 don't just chmod when it may be too late.
8883 *) Report an error from X509_STORE_load_locations
8884 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
8887 *) New function ASN1_mbstring_copy() this copies a string in either
8888 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
8889 into an ASN1_STRING type. A mask of permissible types is passed
8890 and it chooses the "minimal" type to use or an error if not type
8894 *) Add function equivalents to the various macros in asn1.h. The old
8895 macros are retained with an M_ prefix. Code inside the library can
8896 use the M_ macros. External code (including the openssl utility)
8897 should *NOT* in order to be "shared library friendly".
8900 *) Add various functions that can check a certificate's extensions
8901 to see if it usable for various purposes such as SSL client,
8902 server or S/MIME and CAs of these types. This is currently
8903 VERY EXPERIMENTAL but will ultimately be used for certificate chain
8904 verification. Also added a -purpose flag to x509 utility to
8905 print out all the purposes.
8908 *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated
8912 *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search
8913 for, obtain and decode and extension and obtain its critical flag.
8914 This allows all the necessary extension code to be handled in a
8915 single function call.
8918 *) RC4 tune-up featuring 30-40% performance improvement on most RISC
8919 platforms. See crypto/rc4/rc4_enc.c for further details.
8922 *) New -noout option to asn1parse. This causes no output to be produced
8923 its main use is when combined with -strparse and -out to extract data
8924 from a file (which may not be in ASN.1 format).
8927 *) Fix for pkcs12 program. It was hashing an invalid certificate pointer
8928 when producing the local key id.
8929 [Richard Levitte <levitte@stacken.kth.se>]
8931 *) New option -dhparam in s_server. This allows a DH parameter file to be
8932 stated explicitly. If it is not stated then it tries the first server
8933 certificate file. The previous behaviour hard coded the filename
8937 *) Add -pubin and -pubout options to the rsa and dsa commands. These allow
8938 a public key to be input or output. For example:
8939 openssl rsa -in key.pem -pubout -out pubkey.pem
8940 Also added necessary DSA public key functions to handle this.
8943 *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
8944 in the message. This was handled by allowing
8945 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
8946 [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>]
8948 *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
8949 to the end of the strings whereas this didn't. This would cause problems
8950 if strings read with d2i_ASN1_bytes() were later modified.
8951 [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>]
8953 *) Fix for base64 decode bug. When a base64 bio reads only one line of
8954 data and it contains EOF it will end up returning an error. This is
8955 caused by input 46 bytes long. The cause is due to the way base64
8956 BIOs find the start of base64 encoded data. They do this by trying a
8957 trial decode on each line until they find one that works. When they
8958 do a flag is set and it starts again knowing it can pass all the
8959 data directly through the decoder. Unfortunately it doesn't reset
8960 the context it uses. This means that if EOF is reached an attempt
8961 is made to pass two EOFs through the context and this causes the
8962 resulting error. This can also cause other problems as well. As is
8963 usual with these problems it takes *ages* to find and the fix is
8964 trivial: move one line.
8965 [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ]
8967 *) Ugly workaround to get s_client and s_server working under Windows. The
8968 old code wouldn't work because it needed to select() on sockets and the
8969 tty (for keypresses and to see if data could be written). Win32 only
8970 supports select() on sockets so we select() with a 1s timeout on the
8971 sockets and then see if any characters are waiting to be read, if none
8972 are present then we retry, we also assume we can always write data to
8973 the tty. This isn't nice because the code then blocks until we've
8974 received a complete line of data and it is effectively polling the
8975 keyboard at 1s intervals: however it's quite a bit better than not
8976 working at all :-) A dedicated Windows application might handle this
8977 with an event loop for example.
8980 *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
8981 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
8982 will be called when RSA_sign() and RSA_verify() are used. This is useful
8983 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
8984 For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
8985 should *not* be used: RSA_sign() and RSA_verify() must be used instead.
8986 This necessitated the support of an extra signature type NID_md5_sha1
8987 for SSL signatures and modifications to the SSL library to use it instead
8988 of calling RSA_public_decrypt() and RSA_private_encrypt().
8991 *) Add new -verify -CAfile and -CApath options to the crl program, these
8992 will lookup a CRL issuers certificate and verify the signature in a
8993 similar way to the verify program. Tidy up the crl program so it
8994 no longer accesses structures directly. Make the ASN1 CRL parsing a bit
8995 less strict. It will now permit CRL extensions even if it is not
8996 a V2 CRL: this will allow it to tolerate some broken CRLs.
8999 *) Initialize all non-automatic variables each time one of the openssl
9000 sub-programs is started (this is necessary as they may be started
9001 multiple times from the "OpenSSL>" prompt).
9002 [Lennart Bang, Bodo Moeller]
9004 *) Preliminary compilation option RSA_NULL which disables RSA crypto without
9005 removing all other RSA functionality (this is what NO_RSA does). This
9006 is so (for example) those in the US can disable those operations covered
9007 by the RSA patent while allowing storage and parsing of RSA keys and RSA
9011 *) Non-copying interface to BIO pairs.
9012 (still largely untested)
9015 *) New function ANS1_tag2str() to convert an ASN1 tag to a descriptive
9016 ASCII string. This was handled independently in various places before.
9019 *) New functions UTF8_getc() and UTF8_putc() that parse and generate
9020 UTF8 strings a character at a time.
9023 *) Use client_version from client hello to select the protocol
9024 (s23_srvr.c) and for RSA client key exchange verification
9025 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
9028 *) Add various utility functions to handle SPKACs, these were previously
9029 handled by poking round in the structure internals. Added new function
9030 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
9031 print, verify and generate SPKACs. Based on an original idea from
9032 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
9035 *) RIPEMD160 is operational on all platforms and is back in 'make test'.
9038 *) Allow the config file extension section to be overwritten on the
9039 command line. Based on an original idea from Massimiliano Pala
9040 <madwolf@comune.modena.it>. The new option is called -extensions
9041 and can be applied to ca, req and x509. Also -reqexts to override
9042 the request extensions in req and -crlexts to override the crl extensions
9046 *) Add new feature to the SPKAC handling in ca. Now you can include
9047 the same field multiple times by preceding it by "XXXX." for example:
9050 this is the same syntax as used in the req config file.
9053 *) Allow certificate extensions to be added to certificate requests. These
9054 are specified in a 'req_extensions' option of the req section of the
9055 config file. They can be printed out with the -text option to req but
9056 are otherwise ignored at present.
9059 *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
9060 data read consists of only the final block it would not decrypted because
9061 EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
9062 A misplaced 'break' also meant the decrypted final block might not be
9063 copied until the next read.
9066 *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
9067 a few extra parameters to the DH structure: these will be useful if
9068 for example we want the value of 'q' or implement X9.42 DH.
9071 *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and
9072 provides hooks that allow the default DSA functions or functions on a
9073 "per key" basis to be replaced. This allows hardware acceleration and
9074 hardware key storage to be handled without major modification to the
9075 library. Also added low level modexp hooks and CRYPTO_EX structure and
9076 associated functions.
9079 *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
9080 as "read only": it can't be written to and the buffer it points to will
9081 not be freed. Reading from a read only BIO is much more efficient than
9082 a normal memory BIO. This was added because there are several times when
9083 an area of memory needs to be read from a BIO. The previous method was
9084 to create a memory BIO and write the data to it, this results in two
9085 copies of the data and an O(n^2) reading algorithm. There is a new
9086 function BIO_new_mem_buf() which creates a read only memory BIO from
9087 an area of memory. Also modified the PKCS#7 routines to use read only
9091 *) Bugfix: ssl23_get_client_hello did not work properly when called in
9092 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
9093 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
9094 but a retry condition occured while trying to read the rest.
9097 *) The PKCS7_ENC_CONTENT_new() function was setting the content type as
9098 NID_pkcs7_encrypted by default: this was wrong since this should almost
9099 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
9100 the encrypted data type: this is a more sensible place to put it and it
9101 allows the PKCS#12 code to be tidied up that duplicated this
9105 *) Changed obj_dat.pl script so it takes its input and output files on
9106 the command line. This should avoid shell escape redirection problems
9110 *) Initial support for certificate extension requests, these are included
9111 in things like Xenroll certificate requests. Included functions to allow
9112 extensions to be obtained and added.
9115 *) -crlf option to s_client and s_server for sending newlines as
9116 CRLF (as required by many protocols).
9119 Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
9121 *) Install libRSAglue.a when OpenSSL is built with RSAref.
9122 [Ralf S. Engelschall]
9124 *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency.
9125 [Andrija Antonijevic <TheAntony2@bigfoot.com>]
9127 *) Fix -startdate and -enddate (which was missing) arguments to 'ca'
9131 *) New function DSA_dup_DH, which duplicates DSA parameters/keys as
9132 DH parameters/keys (q is lost during that conversion, but the resulting
9133 DH parameters contain its length).
9135 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
9136 much faster than DH_generate_parameters (which creates parameters
9137 where p = 2*q + 1), and also the smaller q makes DH computations
9138 much more efficient (160-bit exponentiation instead of 1024-bit
9139 exponentiation); so this provides a convenient way to support DHE
9140 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
9141 utter importance to use
9142 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
9144 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
9145 when such DH parameters are used, because otherwise small subgroup
9146 attacks may become possible!
9149 *) Avoid memory leak in i2d_DHparams.
9152 *) Allow the -k option to be used more than once in the enc program:
9153 this allows the same encrypted message to be read by multiple recipients.
9156 *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
9157 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
9158 it will always use the numerical form of the OID, even if it has a short
9162 *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
9163 method only got called if p,q,dmp1,dmq1,iqmp components were present,
9164 otherwise bn_mod_exp was called. In the case of hardware keys for example
9165 no private key components need be present and it might store extra data
9166 in the RSA structure, which cannot be accessed from bn_mod_exp.
9167 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
9168 private key operations.
9171 *) Added support for SPARC Linux.
9174 *) pem_password_cb function type incompatibly changed from
9175 typedef int pem_password_cb(char *buf, int size, int rwflag);
9177 ....(char *buf, int size, int rwflag, void *userdata);
9178 so that applications can pass data to their callbacks:
9179 The PEM[_ASN1]_{read,write}... functions and macros now take an
9180 additional void * argument, which is just handed through whenever
9181 the password callback is called.
9182 [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller]
9184 New function SSL_CTX_set_default_passwd_cb_userdata.
9186 Compatibility note: As many C implementations push function arguments
9187 onto the stack in reverse order, the new library version is likely to
9188 interoperate with programs that have been compiled with the old
9189 pem_password_cb definition (PEM_whatever takes some data that
9190 happens to be on the stack as its last argument, and the callback
9191 just ignores this garbage); but there is no guarantee whatsoever that
9194 *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
9195 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
9196 problems not only on Windows, but also on some Unix platforms.
9197 To avoid problematic command lines, these definitions are now in an
9198 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
9199 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
9202 *) MIPS III/IV assembler module is reimplemented.
9205 *) More DES library cleanups: remove references to srand/rand and
9206 delete an unused file.
9209 *) Add support for the the free Netwide assembler (NASM) under Win32,
9210 since not many people have MASM (ml) and it can be hard to obtain.
9211 This is currently experimental but it seems to work OK and pass all
9212 the tests. Check out INSTALL.W32 for info.
9215 *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
9216 without temporary keys kept an extra copy of the server key,
9217 and connections with temporary keys did not free everything in case
9221 *) New function RSA_check_key and new openssl rsa option -check
9222 for verifying the consistency of RSA keys.
9223 [Ulf Moeller, Bodo Moeller]
9225 *) Various changes to make Win32 compile work:
9226 1. Casts to avoid "loss of data" warnings in p5_crpt2.c
9227 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
9228 comparison" warnings.
9229 3. Add sk_<TYPE>_sort to DEF file generator and do make update.
9232 *) Add a debugging option to PKCS#5 v2 key generation function: when
9233 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
9234 derived keys are printed to stderr.
9237 *) Copy the flags in ASN1_STRING_dup().
9238 [Roman E. Pavlov <pre@mo.msk.ru>]
9240 *) The x509 application mishandled signing requests containing DSA
9241 keys when the signing key was also DSA and the parameters didn't match.
9243 It was supposed to omit the parameters when they matched the signing key:
9244 the verifying software was then supposed to automatically use the CA's
9245 parameters if they were absent from the end user certificate.
9247 Omitting parameters is no longer recommended. The test was also
9248 the wrong way round! This was probably due to unusual behaviour in
9249 EVP_cmp_parameters() which returns 1 if the parameters match.
9250 This meant that parameters were omitted when they *didn't* match and
9251 the certificate was useless. Certificates signed with 'ca' didn't have
9253 [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>]
9255 *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
9256 The interface is as follows:
9257 Applications can use
9258 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
9259 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
9260 "off" is now the default.
9261 The library internally uses
9262 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
9263 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
9264 to disable memory-checking temporarily.
9266 Some inconsistent states that previously were possible (and were
9267 even the default) are now avoided.
9269 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
9270 with each memory chunk allocated; this is occasionally more helpful
9271 than just having a counter.
9273 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
9275 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
9279 *) Introduce "mode" for SSL structures (with defaults in SSL_CTX),
9280 which largely parallels "options", but is for changing API behaviour,
9281 whereas "options" are about protocol behaviour.
9282 Initial "mode" flags are:
9284 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when
9285 a single record has been written.
9286 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write
9287 retries use the same buffer location.
9288 (But all of the contents must be
9292 *) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options
9295 *) Fix problems with no-hmac etc.
9296 [Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>]
9298 *) New functions RSA_get_default_method(), RSA_set_method() and
9299 RSA_get_method(). These allows replacement of RSA_METHODs without having
9300 to mess around with the internals of an RSA structure.
9303 *) Fix memory leaks in DSA_do_sign and DSA_is_prime.
9304 Also really enable memory leak checks in openssl.c and in some
9306 [Chad C. Mulligan, Bodo Moeller]
9308 *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
9309 up the length of negative integers. This has now been simplified to just
9310 store the length when it is first determined and use it later, rather
9311 than trying to keep track of where data is copied and updating it to
9313 [Steve Henson, reported by Brien Wheeler
9314 <bwheeler@authentica-security.com>]
9316 *) Add a new function PKCS7_signatureVerify. This allows the verification
9317 of a PKCS#7 signature but with the signing certificate passed to the
9318 function itself. This contrasts with PKCS7_dataVerify which assumes the
9319 certificate is present in the PKCS#7 structure. This isn't always the
9320 case: certificates can be omitted from a PKCS#7 structure and be
9321 distributed by "out of band" means (such as a certificate database).
9324 *) Complete the PEM_* macros with DECLARE_PEM versions to replace the
9325 function prototypes in pem.h, also change util/mkdef.pl to add the
9326 necessary function names.
9329 *) mk1mf.pl (used by Windows builds) did not properly read the
9330 options set by Configure in the top level Makefile, and Configure
9331 was not even able to write more than one option correctly.
9332 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
9335 *) New functions CONF_load_bio() and CONF_load_fp() to allow a config
9336 file to be loaded from a BIO or FILE pointer. The BIO version will
9337 for example allow memory BIOs to contain config info.
9340 *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
9341 Whoever hopes to achieve shared-library compatibility across versions
9342 must use this, not the compile-time macro.
9343 (Exercise 0.9.4: Which is the minimum library version required by
9345 Note: All this applies only to multi-threaded programs, others don't
9349 *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests
9350 through a BIO pair triggered the default case, i.e.
9351 SSLerr(...,SSL_R_UNKNOWN_STATE).
9354 *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
9355 can use the SSL library even if none of the specific BIOs is
9359 *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
9360 for the encoded length.
9361 [Jeon KyoungHo <khjeon@sds.samsung.co.kr>]
9363 *) Add initial documentation of the X509V3 functions.
9366 *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and
9367 PEM_write_bio_PKCS8PrivateKey() that are equivalent to
9368 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
9369 secure PKCS#8 private key format with a high iteration count.
9372 *) Fix determination of Perl interpreter: A perl or perl5
9373 _directory_ in $PATH was also accepted as the interpreter.
9374 [Ralf S. Engelschall]
9376 *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking
9377 wrong with it but it was very old and did things like calling
9378 PEM_ASN1_read() directly and used MD5 for the hash not to mention some
9382 *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed
9383 to use the new extension code.
9386 *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
9387 with macros. This should make it easier to change their form, add extra
9388 arguments etc. Fix a few PEM prototypes which didn't have cipher as a
9392 *) Add to configuration table a new entry that can specify an alternative
9393 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
9394 according to Mark Crispin <MRC@Panda.COM>.
9398 *) DES CBC did not update the IV. Weird.
9401 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
9402 Changing the behaviour of the former might break existing programs --
9403 where IV updating is needed, des_ncbc_encrypt can be used.
9406 *) When bntest is run from "make test" it drives bc to check its
9407 calculations, as well as internally checking them. If an internal check
9408 fails, it needs to cause bc to give a non-zero result or make test carries
9409 on without noticing the failure. Fixed.
9412 *) DES library cleanups.
9415 *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
9416 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
9417 ciphers. NOTE: although the key derivation function has been verified
9418 against some published test vectors it has not been extensively tested
9419 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
9423 *) Instead of "mkdir -p", which is not fully portable, use new
9424 Perl script "util/mkdir-p.pl".
9427 *) Rewrite the way password based encryption (PBE) is handled. It used to
9428 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
9429 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
9430 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
9431 the 'parameter' field of the AlgorithmIdentifier is passed to the
9432 underlying key generation function so it must do its own ASN1 parsing.
9433 This has also changed the EVP_PBE_CipherInit() function which now has a
9434 'parameter' argument instead of literal salt and iteration count values
9435 and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
9438 *) Support for PKCS#5 v1.5 compatible password based encryption algorithms
9439 and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
9440 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
9441 KEY" because this clashed with PKCS#8 unencrypted string. Since this
9442 value was just used as a "magic string" and not used directly its
9443 value doesn't matter.
9446 *) Introduce some semblance of const correctness to BN. Shame C doesn't
9450 *) "linux-sparc64" configuration (ultrapenguin).
9451 [Ray Miller <ray.miller@oucs.ox.ac.uk>]
9452 "linux-sparc" configuration.
9453 [Christian Forster <fo@hawo.stw.uni-erlangen.de>]
9455 *) config now generates no-xxx options for missing ciphers.
9458 *) Support the EBCDIC character set (work in progress).
9459 File ebcdic.c not yet included because it has a different license.
9460 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
9462 *) Support BS2000/OSD-POSIX.
9463 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
9465 *) Make callbacks for key generation use void * instead of char *.
9468 *) Make S/MIME samples compile (not yet tested).
9471 *) Additional typesafe stacks.
9474 *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
9478 Changes between 0.9.3 and 0.9.3a [29 May 1999]
9480 *) New configuration variant "sco5-gcc".
9482 *) Updated some demos.
9483 [Sean O Riordain, Wade Scholine]
9485 *) Add missing BIO_free at exit of pkcs12 application.
9488 *) Fix memory leak in conf.c.
9491 *) Updates for Win32 to assembler version of MD5.
9494 *) Set #! path to perl in apps/der_chop to where we found it
9495 instead of using a fixed path.
9498 *) SHA library changes for irix64-mips4-cc.
9501 *) Improvements for VMS support.
9505 Changes between 0.9.2b and 0.9.3 [24 May 1999]
9507 *) Bignum library bug fix. IRIX 6 passes "make test" now!
9508 This also avoids the problems with SC4.2 and unpatched SC5.
9509 [Andy Polyakov <appro@fy.chalmers.se>]
9511 *) New functions sk_num, sk_value and sk_set to replace the previous macros.
9512 These are required because of the typesafe stack would otherwise break
9513 existing code. If old code used a structure member which used to be STACK
9514 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
9515 sk_num or sk_value it would produce an error because the num, data members
9516 are not present in STACK_OF. Now it just produces a warning. sk_set
9517 replaces the old method of assigning a value to sk_value
9518 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
9519 that does this will no longer work (and should use sk_set instead) but
9520 this could be regarded as a "questionable" behaviour anyway.
9523 *) Fix most of the other PKCS#7 bugs. The "experimental" code can now
9524 correctly handle encrypted S/MIME data.
9527 *) Change type of various DES function arguments from des_cblock
9528 (which means, in function argument declarations, pointer to char)
9529 to des_cblock * (meaning pointer to array with 8 char elements),
9530 which allows the compiler to do more typechecking; it was like
9531 that back in SSLeay, but with lots of ugly casts.
9533 Introduce new type const_des_cblock.
9536 *) Reorganise the PKCS#7 library and get rid of some of the more obvious
9537 problems: find RecipientInfo structure that matches recipient certificate
9538 and initialise the ASN1 structures properly based on passed cipher.
9541 *) Belatedly make the BN tests actually check the results.
9544 *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
9545 to and from BNs: it was completely broken. New compilation option
9546 NEG_PUBKEY_BUG to allow for some broken certificates that encode public
9547 key elements as negative integers.
9550 *) Reorganize and speed up MD5.
9551 [Andy Polyakov <appro@fy.chalmers.se>]
9554 [Richard Levitte <richard@levitte.org>]
9556 *) New option -out to asn1parse to allow the parsed structure to be
9557 output to a file. This is most useful when combined with the -strparse
9558 option to examine the output of things like OCTET STRINGS.
9561 *) Make SSL library a little more fool-proof by not requiring any longer
9562 that SSL_set_{accept,connect}_state be called before
9563 SSL_{accept,connect} may be used (SSL_set_..._state is omitted
9564 in many applications because usually everything *appeared* to work as
9565 intended anyway -- now it really works as intended).
9568 *) Move openssl.cnf out of lib/.
9571 *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall
9572 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
9573 -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+
9574 [Ralf S. Engelschall]
9576 *) Various fixes to the EVP and PKCS#7 code. It may now be able to
9577 handle PKCS#7 enveloped data properly.
9578 [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve]
9580 *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
9581 copying pointers. The cert_st handling is changed by this in
9582 various ways (and thus what used to be known as ctx->default_cert
9583 is now called ctx->cert, since we don't resort to s->ctx->[default_]cert
9584 any longer when s->cert does not give us what we need).
9585 ssl_cert_instantiate becomes obsolete by this change.
9586 As soon as we've got the new code right (possibly it already is?),
9587 we have solved a couple of bugs of the earlier code where s->cert
9588 was used as if it could not have been shared with other SSL structures.
9590 Note that using the SSL API in certain dirty ways now will result
9591 in different behaviour than observed with earlier library versions:
9592 Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx)
9593 does not influence s as it used to.
9595 In order to clean up things more thoroughly, inside SSL_SESSION
9596 we don't use CERT any longer, but a new structure SESS_CERT
9597 that holds per-session data (if available); currently, this is
9598 the peer's certificate chain and, for clients, the server's certificate
9599 and temporary key. CERT holds only those values that can have
9600 meaningful defaults in an SSL_CTX.
9603 *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
9604 from the internal representation. Various PKCS#7 fixes: remove some
9605 evil casts and set the enc_dig_alg field properly based on the signing
9609 *) Allow PKCS#12 password to be set from the command line or the
9610 environment. Let 'ca' get its config file name from the environment
9611 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
9615 *) Allow certificate policies extension to use an IA5STRING for the
9616 organization field. This is contrary to the PKIX definition but
9617 VeriSign uses it and IE5 only recognises this form. Document 'x509'
9621 *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
9622 without disallowing inline assembler and the like for non-pedantic builds.
9625 *) Support Borland C++ builder.
9626 [Janez Jere <jj@void.si>, modified by Ulf Möller]
9631 *) SHA-1 cleanups and performance enhancements.
9632 [Andy Polyakov <appro@fy.chalmers.se>]
9634 *) Sparc v8plus assembler for the bignum library.
9635 [Andy Polyakov <appro@fy.chalmers.se>]
9637 *) Accept any -xxx and +xxx compiler options in Configure.
9640 *) Update HPUX configuration.
9643 *) Add missing sk_<type>_unshift() function to safestack.h
9644 [Ralf S. Engelschall]
9646 *) New function SSL_CTX_use_certificate_chain_file that sets the
9647 "extra_cert"s in addition to the certificate. (This makes sense
9648 only for "PEM" format files, as chains as a whole are not
9652 *) Support verify_depth from the SSL API.
9653 x509_vfy.c had what can be considered an off-by-one-error:
9654 Its depth (which was not part of the external interface)
9655 was actually counting the number of certificates in a chain;
9656 now it really counts the depth.
9659 *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
9660 instead of X509err, which often resulted in confusing error
9661 messages since the error codes are not globally unique
9662 (e.g. an alleged error in ssl3_accept when a certificate
9663 didn't match the private key).
9665 *) New function SSL_CTX_set_session_id_context that allows to set a default
9666 value (so that you don't need SSL_set_session_id_context for each
9667 connection using the SSL_CTX).
9670 *) OAEP decoding bug fix.
9673 *) Support INSTALL_PREFIX for package builders, as proposed by
9677 *) New Configure options "threads" and "no-threads". For systems
9678 where the proper compiler options are known (currently Solaris
9679 and Linux), "threads" is the default.
9682 *) New script util/mklink.pl as a faster substitute for util/mklink.sh.
9685 *) Install various scripts to $(OPENSSLDIR)/misc, not to
9686 $(INSTALLTOP)/bin -- they shouldn't clutter directories
9687 such as /usr/local/bin.
9690 *) "make linux-shared" to build shared libraries.
9691 [Niels Poppe <niels@netbox.org>]
9693 *) New Configure option no-<cipher> (rsa, idea, rc5, ...).
9696 *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
9697 extension adding in x509 utility.
9700 *) Remove NOPROTO sections and error code comments.
9703 *) Partial rewrite of the DEF file generator to now parse the ANSI
9707 *) New Configure options --prefix=DIR and --openssldir=DIR.
9710 *) Complete rewrite of the error code script(s). It is all now handled
9711 by one script at the top level which handles error code gathering,
9712 header rewriting and C source file generation. It should be much better
9713 than the old method: it now uses a modified version of Ulf's parser to
9714 read the ANSI prototypes in all header files (thus the old K&R definitions
9715 aren't needed for error creation any more) and do a better job of
9716 translating function codes into names. The old 'ASN1 error code imbedded
9717 in a comment' is no longer necessary and it doesn't use .err files which
9718 have now been deleted. Also the error code call doesn't have to appear all
9719 on one line (which resulted in some large lines...).
9722 *) Change #include filenames from <foo.h> to <openssl/foo.h>.
9725 *) Change behaviour of ssl2_read when facing length-0 packets: Don't return
9726 0 (which usually indicates a closed connection), but continue reading.
9729 *) Fix some race conditions.
9732 *) Add support for CRL distribution points extension. Add Certificate
9733 Policies and CRL distribution points documentation.
9736 *) Move the autogenerated header file parts to crypto/opensslconf.h.
9739 *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
9740 8 of keying material. Merlin has also confirmed interop with this fix
9741 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
9742 [Merlin Hughes <merlin@baltimore.ie>]
9744 *) Fix lots of warnings.
9745 [Richard Levitte <levitte@stacken.kth.se>]
9747 *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
9748 the directory spec didn't end with a LIST_SEPARATOR_CHAR.
9749 [Richard Levitte <levitte@stacken.kth.se>]
9751 *) Fix problems with sizeof(long) == 8.
9752 [Andy Polyakov <appro@fy.chalmers.se>]
9754 *) Change functions to ANSI C.
9757 *) Fix typos in error codes.
9758 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller]
9760 *) Remove defunct assembler files from Configure.
9763 *) SPARC v8 assembler BIGNUM implementation.
9764 [Andy Polyakov <appro@fy.chalmers.se>]
9766 *) Support for Certificate Policies extension: both print and set.
9767 Various additions to support the r2i method this uses.
9770 *) A lot of constification, and fix a bug in X509_NAME_oneline() that could
9771 return a const string when you are expecting an allocated buffer.
9774 *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
9775 types DirectoryString and DisplayText.
9778 *) Add code to allow r2i extensions to access the configuration database,
9779 add an LHASH database driver and add several ctx helper functions.
9782 *) Fix an evil bug in bn_expand2() which caused various BN functions to
9783 fail when they extended the size of a BIGNUM.
9786 *) Various utility functions to handle SXNet extension. Modify mkdef.pl to
9787 support typesafe stack.
9790 *) Fix typo in SSL_[gs]et_options().
9791 [Nils Frostberg <nils@medcom.se>]
9793 *) Delete various functions and files that belonged to the (now obsolete)
9794 old X509V3 handling code.
9797 *) New Configure option "rsaref".
9800 *) Don't auto-generate pem.h.
9803 *) Introduce type-safe ASN.1 SETs.
9806 *) Convert various additional casted stacks to type-safe STACK_OF() variants.
9807 [Ben Laurie, Ralf S. Engelschall, Steve Henson]
9809 *) Introduce type-safe STACKs. This will almost certainly break lots of code
9810 that links with OpenSSL (well at least cause lots of warnings), but fear
9811 not: the conversion is trivial, and it eliminates loads of evil casts. A
9812 few STACKed things have been converted already. Feel free to convert more.
9813 In the fullness of time, I'll do away with the STACK type altogether.
9816 *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate
9817 specified in <certfile> by updating the entry in the index.txt file.
9818 This way one no longer has to edit the index.txt file manually for
9819 revoking a certificate. The -revoke option does the gory details now.
9820 [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall]
9822 *) Fix `openssl crl -noout -text' combination where `-noout' killed the
9823 `-text' option at all and this way the `-noout -text' combination was
9824 inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'.
9825 [Ralf S. Engelschall]
9827 *) Make sure a corresponding plain text error message exists for the
9828 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
9829 verify callback function determined that a certificate was revoked.
9830 [Ralf S. Engelschall]
9832 *) Bugfix: In test/testenc, don't test "openssl <cipher>" for
9833 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test
9834 all available cipers including rc5, which was forgotten until now.
9835 In order to let the testing shell script know which algorithms
9836 are available, a new (up to now undocumented) command
9837 "openssl list-cipher-commands" is used.
9840 *) Bugfix: s_client occasionally would sleep in select() when
9841 it should have checked SSL_pending() first.
9844 *) New functions DSA_do_sign and DSA_do_verify to provide access to
9845 the raw DSA values prior to ASN.1 encoding.
9848 *) Tweaks to Configure
9849 [Niels Poppe <niels@netbox.org>]
9851 *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
9855 *) New variables $(RANLIB) and $(PERL) in the Makefiles.
9858 *) New config option to avoid instructions that are illegal on the 80386.
9859 The default code is faster, but requires at least a 486.
9862 *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
9863 SSL2_SERVER_VERSION (not used at all) macros, which are now the
9864 same as SSL2_VERSION anyway.
9867 *) New "-showcerts" option for s_client.
9870 *) Still more PKCS#12 integration. Add pkcs12 application to openssl
9871 application. Various cleanups and fixes.
9874 *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
9875 modify error routines to work internally. Add error codes and PBE init
9876 to library startup routines.
9879 *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and
9880 packing functions to asn1 and evp. Changed function names and error
9881 codes along the way.
9884 *) PKCS12 integration: and so it begins... First of several patches to
9885 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
9886 objects to objects.h
9889 *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1
9890 and display support for Thawte strong extranet extension.
9893 *) Add LinuxPPC support.
9894 [Jeff Dubrule <igor@pobox.org>]
9896 *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
9897 bn_div_words in alpha.s.
9898 [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie]
9900 *) Make sure the RSA OAEP test is skipped under -DRSAref because
9901 OAEP isn't supported when OpenSSL is built with RSAref.
9902 [Ulf Moeller <ulf@fitug.de>]
9904 *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
9905 so they no longer are missing under -DNOPROTO.
9906 [Soren S. Jorvang <soren@t.dk>]
9909 Changes between 0.9.1c and 0.9.2b [22 Mar 1999]
9911 *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
9912 doesn't work when the session is reused. Coming soon!
9915 *) Fix a security hole, that allows sessions to be reused in the wrong
9916 context thus bypassing client cert protection! All software that uses
9917 client certs and session caches in multiple contexts NEEDS PATCHING to
9918 allow session reuse! A fuller solution is in the works.
9919 [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)]
9921 *) Some more source tree cleanups (removed obsolete files
9922 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
9923 permission on "config" script to be executable) and a fix for the INSTALL
9925 [Ulf Moeller <ulf@fitug.de>]
9927 *) Remove some legacy and erroneous uses of malloc, free instead of
9929 [Lennart Bang <lob@netstream.se>, with minor changes by Steve]
9931 *) Make rsa_oaep_test return non-zero on error.
9932 [Ulf Moeller <ulf@fitug.de>]
9934 *) Add support for native Solaris shared libraries. Configure
9935 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
9936 if someone would make that last step automatic.
9937 [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>]
9939 *) ctx_size was not built with the right compiler during "make links". Fixed.
9942 *) Change the meaning of 'ALL' in the cipher list. It now means "everything
9943 except NULL ciphers". This means the default cipher list will no longer
9944 enable NULL ciphers. They need to be specifically enabled e.g. with
9945 the string "DEFAULT:eNULL".
9948 *) Fix to RSA private encryption routines: if p < q then it would
9949 occasionally produce an invalid result. This will only happen with
9950 externally generated keys because OpenSSL (and SSLeay) ensure p > q.
9953 *) Be less restrictive and allow also `perl util/perlpath.pl
9954 /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin',
9955 because this way one can also use an interpreter named `perl5' (which is
9956 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
9957 installed as `perl').
9958 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
9960 *) Let util/clean-depend.pl work also with older Perl 5.00x versions.
9961 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
9963 *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
9964 advapi32.lib to Win32 build and change the pem test comparision
9965 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
9966 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
9967 and crypto/des/ede_cbcm_enc.c.
9970 *) DES quad checksum was broken on big-endian architectures. Fixed.
9973 *) Comment out two functions in bio.h that aren't implemented. Fix up the
9974 Win32 test batch file so it (might) work again. The Win32 test batch file
9975 is horrible: I feel ill....
9978 *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
9979 in e_os.h. Audit of header files to check ANSI and non ANSI
9980 sections: 10 functions were absent from non ANSI section and not exported
9981 from Windows DLLs. Fixed up libeay.num for new functions.
9984 *) Make `openssl version' output lines consistent.
9985 [Ralf S. Engelschall]
9987 *) Fix Win32 symbol export lists for BIO functions: Added
9988 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
9989 to ms/libeay{16,32}.def.
9990 [Ralf S. Engelschall]
9992 *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
9993 fine under Unix and passes some trivial tests I've now added. But the
9994 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
9995 added to make sure no one expects that this stuff really works in the
9996 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources
9997 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
9999 [Ralf S. Engelschall]
10001 *) Fix the generation of two part addresses in perl.
10002 [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie]
10004 *) Add config entry for Linux on MIPS.
10005 [John Tobey <jtobey@channel1.com>]
10007 *) Make links whenever Configure is run, unless we are on Windoze.
10010 *) Permit extensions to be added to CRLs using crl_section in openssl.cnf.
10011 Currently only issuerAltName and AuthorityKeyIdentifier make any sense
10015 *) Add a useful kludge to allow package maintainers to specify compiler and
10016 other platforms details on the command line without having to patch the
10017 Configure script everytime: One now can use ``perl Configure
10018 <id>:<details>'', i.e. platform ids are allowed to have details appended
10019 to them (seperated by colons). This is treated as there would be a static
10020 pre-configured entry in Configure's %table under key <id> with value
10021 <details> and ``perl Configure <id>'' is called. So, when you want to
10022 perform a quick test-compile under FreeBSD 3.1 with pgcc and without
10023 assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"''
10024 now, which overrides the FreeBSD-elf entry on-the-fly.
10025 [Ralf S. Engelschall]
10027 *) Disable new TLS1 ciphersuites by default: they aren't official yet.
10030 *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
10031 on the `perl Configure ...' command line. This way one can compile
10032 OpenSSL libraries with Position Independent Code (PIC) which is needed
10033 for linking it into DSOs.
10034 [Ralf S. Engelschall]
10036 *) Remarkably, export ciphers were totally broken and no-one had noticed!
10040 *) Cleaned up the LICENSE document: The official contact for any license
10041 questions now is the OpenSSL core team under openssl-core@openssl.org.
10042 And add a paragraph about the dual-license situation to make sure people
10043 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
10044 to the OpenSSL toolkit.
10045 [Ralf S. Engelschall]
10047 *) General source tree makefile cleanups: Made `making xxx in yyy...'
10048 display consistent in the source tree and replaced `/bin/rm' by `rm'.
10049 Additonally cleaned up the `make links' target: Remove unnecessary
10050 semicolons, subsequent redundant removes, inline point.sh into mklink.sh
10051 to speed processing and no longer clutter the display with confusing
10052 stuff. Instead only the actually done links are displayed.
10053 [Ralf S. Engelschall]
10055 *) Permit null encryption ciphersuites, used for authentication only. It used
10056 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
10057 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
10061 *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
10062 signed attributes when verifying signatures (this would break them),
10063 the detached data encoding was wrong and public keys obtained using
10064 X509_get_pubkey() weren't freed.
10067 *) Add text documentation for the BUFFER functions. Also added a work around
10068 to a Win95 console bug. This was triggered by the password read stuff: the
10069 last character typed gets carried over to the next fread(). If you were
10070 generating a new cert request using 'req' for example then the last
10071 character of the passphrase would be CR which would then enter the first
10075 *) Added the new `Includes OpenSSL Cryptography Software' button as
10076 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
10077 button and can be used by applications based on OpenSSL to show the
10078 relationship to the OpenSSL project.
10079 [Ralf S. Engelschall]
10081 *) Remove confusing variables in function signatures in files
10082 ssl/ssl_lib.c and ssl/ssl.h.
10083 [Lennart Bong <lob@kulthea.stacken.kth.se>]
10085 *) Don't install bss_file.c under PREFIX/include/
10086 [Lennart Bong <lob@kulthea.stacken.kth.se>]
10088 *) Get the Win32 compile working again. Modify mkdef.pl so it can handle
10089 functions that return function pointers and has support for NT specific
10090 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
10091 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
10092 unsigned to signed types: this was killing the Win32 compile.
10095 *) Add new certificate file to stack functions,
10096 SSL_add_dir_cert_subjects_to_stack() and
10097 SSL_add_file_cert_subjects_to_stack(). These largely supplant
10098 SSL_load_client_CA_file(), and can be used to add multiple certs easily
10099 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
10100 This means that Apache-SSL and similar packages don't have to mess around
10101 to add as many CAs as they want to the preferred list.
10104 *) Experiment with doxygen documentation. Currently only partially applied to
10106 See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with
10107 openssl.doxy as the configuration file.
10110 *) Get rid of remaining C++-style comments which strict C compilers hate.
10111 [Ralf S. Engelschall, pointed out by Carlos Amengual]
10113 *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
10114 compiled in by default: it has problems with large keys.
10117 *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
10118 DH private keys and/or callback functions which directly correspond to
10119 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
10120 is needed for applications which have to configure certificates on a
10121 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
10123 For the RSA certificate situation is makes no difference, but
10124 for the DSA certificate situation this fixes the "no shared cipher"
10125 problem where the OpenSSL cipher selection procedure failed because the
10126 temporary keys were not overtaken from the context and the API provided
10127 no way to reconfigure them.
10128 The new functions now let applications reconfigure the stuff and they
10129 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
10130 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new
10131 non-public-API function ssl_cert_instantiate() is used as a helper
10132 function and also to reduce code redundancy inside ssl_rsa.c.
10133 [Ralf S. Engelschall]
10135 *) Move s_server -dcert and -dkey options out of the undocumented feature
10136 area because they are useful for the DSA situation and should be
10137 recognized by the users.
10138 [Ralf S. Engelschall]
10140 *) Fix the cipher decision scheme for export ciphers: the export bits are
10141 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
10142 SSL_EXP_MASK. So, the original variable has to be used instead of the
10143 already masked variable.
10144 [Richard Levitte <levitte@stacken.kth.se>]
10146 *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c
10147 [Richard Levitte <levitte@stacken.kth.se>]
10149 *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
10150 from `int' to `unsigned int' because it's a length and initialized by
10151 EVP_DigestFinal() which expects an `unsigned int *'.
10152 [Richard Levitte <levitte@stacken.kth.se>]
10154 *) Don't hard-code path to Perl interpreter on shebang line of Configure
10155 script. Instead use the usual Shell->Perl transition trick.
10156 [Ralf S. Engelschall]
10158 *) Make `openssl x509 -noout -modulus' functional also for DSA certificates
10159 (in addition to RSA certificates) to match the behaviour of `openssl dsa
10160 -noout -modulus' as it's already the case for `openssl rsa -noout
10161 -modulus'. For RSA the -modulus is the real "modulus" while for DSA
10162 currently the public key is printed (a decision which was already done by
10163 `openssl dsa -modulus' in the past) which serves a similar purpose.
10164 Additionally the NO_RSA no longer completely removes the whole -modulus
10165 option; it now only avoids using the RSA stuff. Same applies to NO_DSA
10167 [Ralf S. Engelschall]
10169 *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
10170 BIO. See the source (crypto/evp/bio_ok.c) for more info.
10171 [Arne Ansper <arne@ats.cyber.ee>]
10173 *) Dump the old yucky req code that tried (and failed) to allow raw OIDs
10174 to be added. Now both 'req' and 'ca' can use new objects defined in the
10178 *) Add cool BIO that does syslog (or event log on NT).
10179 [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie]
10181 *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
10182 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
10183 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
10184 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
10187 *) Add preliminary config info for new extension code.
10190 *) Make RSA_NO_PADDING really use no padding.
10191 [Ulf Moeller <ulf@fitug.de>]
10193 *) Generate errors when private/public key check is done.
10196 *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
10197 for some CRL extensions and new objects added.
10200 *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private
10201 key usage extension and fuller support for authority key id.
10204 *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
10205 padding method for RSA, which is recommended for new applications in PKCS
10206 #1 v2.0 (RFC 2437, October 1998).
10207 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
10208 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
10209 against Bleichbacher's attack on RSA.
10210 [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
10213 *) Updates to the new SSL compression code
10214 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
10216 *) Fix so that the version number in the master secret, when passed
10217 via RSA, checks that if TLS was proposed, but we roll back to SSLv3
10218 (because the server will not accept higher), that the version number
10219 is 0x03,0x01, not 0x03,0x00
10220 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
10222 *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
10223 leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
10224 in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
10227 *) Support for RAW extensions where an arbitrary extension can be
10228 created by including its DER encoding. See apps/openssl.cnf for
10232 *) Make sure latest Perl versions don't interpret some generated C array
10233 code as Perl array code in the crypto/err/err_genc.pl script.
10234 [Lars Weber <3weber@informatik.uni-hamburg.de>]
10236 *) Modify ms/do_ms.bat to not generate assembly language makefiles since
10237 not many people have the assembler. Various Win32 compilation fixes and
10238 update to the INSTALL.W32 file with (hopefully) more accurate Win32
10239 build instructions.
10242 *) Modify configure script 'Configure' to automatically create crypto/date.h
10243 file under Win32 and also build pem.h from pem.org. New script
10244 util/mkfiles.pl to create the MINFO file on environments that can't do a
10245 'make files': perl util/mkfiles.pl >MINFO should work.
10248 *) Major rework of DES function declarations, in the pursuit of correctness
10249 and purity. As a result, many evil casts evaporated, and some weirdness,
10250 too. You may find this causes warnings in your code. Zapping your evil
10251 casts will probably fix them. Mostly.
10254 *) Fix for a typo in asn1.h. Bug fix to object creation script
10255 obj_dat.pl. It considered a zero in an object definition to mean
10256 "end of object": none of the objects in objects.h have any zeros
10257 so it wasn't spotted.
10258 [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>]
10260 *) Add support for Triple DES Cipher Block Chaining with Output Feedback
10261 Masking (CBCM). In the absence of test vectors, the best I have been able
10262 to do is check that the decrypt undoes the encrypt, so far. Send me test
10263 vectors if you have them.
10266 *) Correct calculation of key length for export ciphers (too much space was
10267 allocated for null ciphers). This has not been tested!
10270 *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage
10271 message is now correct (it understands "crypto" and "ssl" on its
10272 command line). There is also now an "update" option. This will update
10273 the util/ssleay.num and util/libeay.num files with any new functions.
10275 perl util/mkdef.pl crypto ssl update
10276 it will update them.
10279 *) Overhauled the Perl interface (perl/*):
10280 - ported BN stuff to OpenSSL's different BN library
10281 - made the perl/ source tree CVS-aware
10282 - renamed the package from SSLeay to OpenSSL (the files still contain
10283 their history because I've copied them in the repository)
10284 - removed obsolete files (the test scripts will be replaced
10285 by better Test::Harness variants in the future)
10286 [Ralf S. Engelschall]
10288 *) First cut for a very conservative source tree cleanup:
10289 1. merge various obsolete readme texts into doc/ssleay.txt
10290 where we collect the old documents and readme texts.
10291 2. remove the first part of files where I'm already sure that we no
10292 longer need them because of three reasons: either they are just temporary
10293 files which were left by Eric or they are preserved original files where
10294 I've verified that the diff is also available in the CVS via "cvs diff
10295 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
10296 the crypto/md/ stuff).
10297 [Ralf S. Engelschall]
10299 *) More extension code. Incomplete support for subject and issuer alt
10300 name, issuer and authority key id. Change the i2v function parameters
10301 and add an extra 'crl' parameter in the X509V3_CTX structure: guess
10302 what that's for :-) Fix to ASN1 macro which messed up
10303 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
10306 *) Preliminary support for ENUMERATED type. This is largely copied from the
10310 *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
10311 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
10313 *) Make sure `make rehash' target really finds the `openssl' program.
10314 [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
10316 *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
10317 like to hear about it if this slows down other processors.
10320 *) Add CygWin32 platform information to Configure script.
10321 [Alan Batie <batie@aahz.jf.intel.com>]
10323 *) Fixed ms/32all.bat script: `no_asm' -> `no-asm'
10324 [Rainer W. Gerling <gerling@mpg-gv.mpg.de>]
10326 *) New program nseq to manipulate netscape certificate sequences
10329 *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
10333 *) Fixes to BN code. Previously the default was to define BN_RECURSION
10334 but the BN code had some problems that would cause failures when
10335 doing certificate verification and some other functions.
10336 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
10338 *) Add ASN1 and PEM code to support netscape certificate sequences.
10341 *) Add ASN1 and PEM code to support netscape certificate sequences.
10344 *) Add several PKIX and private extended key usage OIDs.
10347 *) Modify the 'ca' program to handle the new extension code. Modify
10348 openssl.cnf for new extension format, add comments.
10351 *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
10352 and add a sample to openssl.cnf so req -x509 now adds appropriate
10356 *) Continued X509 V3 changes. Add to other makefiles, integrate with the
10357 error code, add initial support to X509_print() and x509 application.
10360 *) Takes a deep breath and start addding X509 V3 extension support code. Add
10361 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
10362 stuff is currently isolated and isn't even compiled yet.
10365 *) Continuing patches for GeneralizedTime. Fix up certificate and CRL
10366 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
10367 Removed the versions check from X509 routines when loading extensions:
10368 this allows certain broken certificates that don't set the version
10369 properly to be processed.
10372 *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
10373 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
10374 can still be regenerated with "make depend".
10377 *) Spelling mistake in C version of CAST-128.
10378 [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>]
10380 *) Changes to the error generation code. The perl script err-code.pl
10381 now reads in the old error codes and retains the old numbers, only
10382 adding new ones if necessary. It also only changes the .err files if new
10383 codes are added. The makefiles have been modified to only insert errors
10384 when needed (to avoid needlessly modifying header files). This is done
10385 by only inserting errors if the .err file is newer than the auto generated
10386 C file. To rebuild all the error codes from scratch (the old behaviour)
10387 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
10388 or delete all the .err files.
10391 *) CAST-128 was incorrectly implemented for short keys. The C version has
10392 been fixed, but is untested. The assembler versions are also fixed, but
10393 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
10394 to regenerate it if needed.
10395 [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
10396 Hagino <itojun@kame.net>]
10398 *) File was opened incorrectly in randfile.c.
10399 [Ulf Möller <ulf@fitug.de>]
10401 *) Beginning of support for GeneralizedTime. d2i, i2d, check and print
10402 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
10403 GeneralizedTime. ASN1_TIME is the proper type used in certificates et
10404 al: it's just almost always a UTCTime. Note this patch adds new error
10405 codes so do a "make errors" if there are problems.
10408 *) Correct Linux 1 recognition in config.
10409 [Ulf Möller <ulf@fitug.de>]
10411 *) Remove pointless MD5 hash when using DSA keys in ca.
10412 [Anonymous <nobody@replay.com>]
10414 *) Generate an error if given an empty string as a cert directory. Also
10415 generate an error if handed NULL (previously returned 0 to indicate an
10416 error, but didn't set one).
10417 [Ben Laurie, reported by Anonymous <nobody@replay.com>]
10419 *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
10422 *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
10423 parameters. This was causing a warning which killed off the Win32 compile.
10426 *) Remove C++ style comments from crypto/bn/bn_local.h.
10427 [Neil Costigan <neil.costigan@celocom.com>]
10429 *) The function OBJ_txt2nid was broken. It was supposed to return a nid
10430 based on a text string, looking up short and long names and finally
10431 "dot" format. The "dot" format stuff didn't work. Added new function
10432 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
10433 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
10434 OID is not part of the table.
10437 *) Add prototypes to X509 lookup/verify methods, fixing a bug in
10438 X509_LOOKUP_by_alias().
10441 *) Sort openssl functions by name.
10444 *) Get the gendsa program working (hopefully) and add it to app list. Remove
10445 encryption from sample DSA keys (in case anyone is interested the password
10449 *) Make _all_ *_free functions accept a NULL pointer.
10450 [Frans Heymans <fheymans@isaserver.be>]
10452 *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use
10454 [Anonymous <nobody@replay.com>]
10456 *) s_server should send the CAfile as acceptable CAs, not its own cert.
10457 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
10459 *) Don't blow it for numeric -newkey arguments to apps/req.
10460 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
10462 *) Temp key "for export" tests were wrong in s3_srvr.c.
10463 [Anonymous <nobody@replay.com>]
10465 *) Add prototype for temp key callback functions
10466 SSL_CTX_set_tmp_{rsa,dh}_callback().
10469 *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
10470 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
10473 *) X509_name_add_entry() freed the wrong thing after an error.
10474 [Arne Ansper <arne@ats.cyber.ee>]
10476 *) rsa_eay.c would attempt to free a NULL context.
10477 [Arne Ansper <arne@ats.cyber.ee>]
10479 *) BIO_s_socket() had a broken should_retry() on Windoze.
10480 [Arne Ansper <arne@ats.cyber.ee>]
10482 *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
10483 [Arne Ansper <arne@ats.cyber.ee>]
10485 *) Make sure the already existing X509_STORE->depth variable is initialized
10486 in X509_STORE_new(), but document the fact that this variable is still
10487 unused in the certificate verification process.
10488 [Ralf S. Engelschall]
10490 *) Fix the various library and apps files to free up pkeys obtained from
10491 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
10494 *) Fix reference counting in X509_PUBKEY_get(). This makes
10495 demos/maurice/example2.c work, amongst others, probably.
10496 [Steve Henson and Ben Laurie]
10498 *) First cut of a cleanup for apps/. First the `ssleay' program is now named
10499 `openssl' and second, the shortcut symlinks for the `openssl <command>'
10500 are no longer created. This way we have a single and consistent command
10501 line interface `openssl <command>', similar to `cvs <command>'.
10502 [Ralf S. Engelschall, Paul Sutton and Ben Laurie]
10504 *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
10505 BIT STRING wrapper always have zero unused bits.
10508 *) Add CA.pl, perl version of CA.sh, add extended key usage OID.
10511 *) Make the top-level INSTALL documentation easier to understand.
10514 *) Makefiles updated to exit if an error occurs in a sub-directory
10515 make (including if user presses ^C) [Paul Sutton]
10517 *) Make Montgomery context stuff explicit in RSA data structure.
10520 *) Fix build order of pem and err to allow for generated pem.h.
10523 *) Fix renumbering bug in X509_NAME_delete_entry().
10526 *) Enhanced the err-ins.pl script so it makes the error library number
10527 global and can add a library name. This is needed for external ASN1 and
10528 other error libraries.
10531 *) Fixed sk_insert which never worked properly.
10534 *) Fix ASN1 macros so they can handle indefinite length construted
10535 EXPLICIT tags. Some non standard certificates use these: they can now
10539 *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
10540 into a single doc/ssleay.txt bundle. This way the information is still
10541 preserved but no longer messes up this directory. Now it's new room for
10542 the new set of documenation files.
10543 [Ralf S. Engelschall]
10545 *) SETs were incorrectly DER encoded. This was a major pain, because they
10546 shared code with SEQUENCEs, which aren't coded the same. This means that
10547 almost everything to do with SETs or SEQUENCEs has either changed name or
10548 number of arguments.
10549 [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>]
10551 *) Fix test data to work with the above.
10554 *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
10555 was already fixed by Eric for 0.9.1 it seems.
10556 [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>]
10558 *) Autodetect FreeBSD3.
10561 *) Fix various bugs in Configure. This affects the following platforms:
10565 unixware-2.0-pentium
10569 *) Eliminate generated files from CVS. Reorder tests to regenerate files
10570 before they are needed.
10573 *) Generate Makefile.ssl from Makefile.org (to keep CVS happy).
10577 Changes between 0.9.1b and 0.9.1c [23-Dec-1998]
10579 *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
10580 changed SSLeay to OpenSSL in version strings.
10581 [Ralf S. Engelschall]
10583 *) Some fixups to the top-level documents.
10586 *) Fixed the nasty bug where rsaref.h was not found under compile-time
10587 because the symlink to include/ was missing.
10588 [Ralf S. Engelschall]
10590 *) Incorporated the popular no-RSA/DSA-only patches
10591 which allow to compile a RSA-free SSLeay.
10592 [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall]
10594 *) Fixed nasty rehash problem under `make -f Makefile.ssl links'
10595 when "ssleay" is still not found.
10596 [Ralf S. Engelschall]
10598 *) Added more platforms to Configure: Cray T3E, HPUX 11,
10599 [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>]
10601 *) Updated the README file.
10602 [Ralf S. Engelschall]
10604 *) Added various .cvsignore files in the CVS repository subdirs
10605 to make a "cvs update" really silent.
10606 [Ralf S. Engelschall]
10608 *) Recompiled the error-definition header files and added
10609 missing symbols to the Win32 linker tables.
10610 [Ralf S. Engelschall]
10612 *) Cleaned up the top-level documents;
10613 o new files: CHANGES and LICENSE
10614 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
10615 o merged COPYRIGHT into LICENSE
10616 o removed obsolete TODO file
10617 o renamed MICROSOFT to INSTALL.W32
10618 [Ralf S. Engelschall]
10620 *) Removed dummy files from the 0.9.1b source tree:
10621 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
10622 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
10623 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
10624 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
10625 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
10626 [Ralf S. Engelschall]
10628 *) Added various platform portability fixes.
10631 *) The Genesis of the OpenSSL rpject:
10632 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
10633 Young and Tim J. Hudson created while they were working for C2Net until
10635 [The OpenSSL Project]
10638 Changes between 0.9.0b and 0.9.1b [not released]
10640 *) Updated a few CA certificates under certs/
10643 *) Changed some BIGNUM api stuff.
10646 *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
10647 DGUX x86, Linux Alpha, etc.
10650 *) New COMP library [crypto/comp/] for SSL Record Layer Compression:
10651 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
10655 *) Add -strparse option to asn1pars program which parses nested
10657 [Dr Stephen Henson <shenson@bigfoot.com>]
10659 *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
10662 *) DSA fix for "ca" program.
10665 *) Added "-genkey" option to "dsaparam" program.
10668 *) Added RIPE MD160 (rmd160) message digest.
10671 *) Added -a (all) option to "ssleay version" command.
10674 *) Added PLATFORM define which is the id given to Configure.
10677 *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
10680 *) Extended the ASN.1 parser routines.
10683 *) Extended BIO routines to support REUSEADDR, seek, tell, etc.
10686 *) Added a BN_CTX to the BN library.
10689 *) Fixed the weak key values in DES library
10692 *) Changed API in EVP library for cipher aliases.
10695 *) Added support for RC2/64bit cipher.
10698 *) Converted the lhash library to the crypto/mem.c functions.
10701 *) Added more recognized ASN.1 object ids.
10704 *) Added more RSA padding checks for SSL/TLS.
10707 *) Added BIO proxy/filter functionality.
10710 *) Added extra_certs to SSL_CTX which can be used
10711 send extra CA certificates to the client in the CA cert chain sending
10712 process. It can be configured with SSL_CTX_add_extra_chain_cert().
10715 *) Now Fortezza is denied in the authentication phase because
10716 this is key exchange mechanism is not supported by SSLeay at all.
10719 *) Additional PKCS1 checks.
10722 *) Support the string "TLSv1" for all TLS v1 ciphers.
10725 *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
10726 ex_data index of the SSL context in the X509_STORE_CTX ex_data.
10729 *) Fixed a few memory leaks.
10732 *) Fixed various code and comment typos.
10735 *) A minor bug in ssl/s3_clnt.c where there would always be 4 0
10736 bytes sent in the client random.
10737 [Edward Bishop <ebishop@spyglass.com>]